Secondary vibration isolation suspension structure and automobile
By using a combined design of limiting parts and fasteners in the secondary vibration isolation suspension system, the potential risk of powertrain drop caused by breakage of rubber bushing is solved, achieving higher stability and vibration damping effects.
Patent Information
- Application Number
- CN202421972417.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-14
AI Technical Summary
In the existing secondary vibration isolation suspension system, the rubber bushing is easy to move under the action of inertia force, and there is a risk of fatigue and fracture when driving at high mileage, resulting in the potential loss of powertrain.
Using a first vibration isolation assembly including a first vibration isolation member and at least two limiting members, the first vibration isolation member is prevented from being disengaged from the support assembly by the stopping action of the limiting member, and a reliable connection between the powertrain and the limiting member is ensured by a fastener.
It effectively avoids safety accidents in which the powertrain falls off on the support component, and reduces the vibration transmitted by the powertrain to the body through the vibration isolation component, improving driving comfort and vehicle performance stability.
Smart Images
Figure CN222832690U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile technology, and in particular to a secondary vibration isolation suspension structure and an automobile. Background Art
[0002] In new energy vehicles, the secondary vibration isolation suspension system is used to connect the vehicle frame and the electric drive powertrain. Since the electric drive powertrain will produce large torque fluctuations in scenarios such as rapid acceleration, rapid deceleration, gear shifting, and electric shutdown, the secondary vibration isolation suspension system supports and limits the electric drive powertrain to ensure that the electric drive powertrain is stably connected to the vehicle, while reducing the transmission of powertrain vibration and noise to improve the driving comfort of the vehicle.
[0003] In the prior art, the secondary vibration isolation suspension system includes a bracket and a primary vibration isolation assembly and a secondary vibration isolation assembly arranged on the bracket, wherein the primary vibration isolation assembly is used to be connected to the vehicle frame, and the secondary vibration isolation assembly includes a plurality of rubber bushings, each of which is used to be connected to the powertrain, and the vibration and noise of the powertrain are absorbed by the rubber bushings.
[0004] However, the rubber bushing will move longitudinally or laterally under the action of inertia force, and when the vehicle travels at a high mileage, the rubber bushing is at risk of fatigue fracture. If one rubber bushing breaks, it will affect the force balance of the remaining rubber bushings and accelerate the fracture of each rubber bushing. In addition, when encountering large bumps, the bracket moves relative to the fracture of the rubber bushing, and the bracket is easily separated from the powertrain at the fracture of the rubber bushing, resulting in the risk of the powertrain falling. Utility Model Content
[0005] One of the purposes of the present application is to provide a secondary vibration isolation suspension structure to solve the problem in the prior art that after the rubber bushing in the secondary vibration isolation suspension system breaks, the bracket is easily separated from the powertrain from the broken part of the rubber bushing, resulting in the risk of the powertrain falling; the second purpose is to provide a car.
[0006] In order to achieve the above purpose, the technical solution adopted in this application is as follows:
[0007] A secondary vibration isolation suspension structure comprises a support assembly, at least one first vibration isolation assembly and at least one second vibration isolation assembly; the second vibration isolation assembly is arranged on the support assembly and is used to be connected to a vehicle frame;
[0008] The first vibration isolation component comprises a first vibration isolation member and at least two stoppers, the first vibration isolation member is arranged on the supporting member, and the two stoppers are arranged coaxially with the first vibration isolation member and are respectively arranged at two opposite ends of the first vibration isolation member;
[0009] The projection of the first vibration isolator toward the limiting member is located inside the limiting member; the first vibration isolator and the limiting member are both used to be connected to the powertrain of the vehicle.
[0010] According to the above technical means, the first vibration isolation component is used to connect the powertrain, and the second vibration isolation component is used to connect with the vehicle frame, so that the powertrain and the vehicle body are assembled as one, which is convenient for connecting the powertrain with the vehicle's suspension system, braking system and other related components to ensure the normal operation of the vehicle. The first vibration isolation component and the second vibration isolation component can block the vibration transmission path between the powertrain and the vehicle body to reduce the vibration transmission from the vibration source to the vehicle body, and can also absorb part of the vibration energy from the vibration source to the vehicle body, thereby reducing the vibration transmitted from the powertrain to the vehicle body. The first vibration isolation component includes a first vibration isolation member and at least two limit members, the two limit members clamp the first vibration isolation member together, and the projection of the limit member toward the first vibration isolation member is greater than the projection of the first vibration isolation member. When the first vibration isolation member moves relative to the support assembly, the limit member will abut against the support assembly, that is, the two relatively arranged limit members have a stopping effect in the axial direction of the first vibration isolation member. When the first vibration isolation member shakes up and down relative to the supporting assembly, two limiting members arranged opposite to each other on the first vibration isolation member can prevent the first vibration isolation member from detaching from the supporting assembly. At the same time, the power assembly and the limiting members can still remain connected, thereby preventing the power assembly from falling off the supporting assembly.
[0011] Furthermore, the first vibration isolation member comprises a first vibration isolation portion and a second vibration isolation portion connected in sequence from the inside to the outside, and a side of the second vibration isolation portion facing away from the first vibration isolation portion is connected to the support assembly;
[0012] The position-limiting member includes an extending portion and a connecting portion arranged on the extending portion, the connecting portion is connected to the first vibration isolation portion, and the extending portion covers the second vibration isolation portion.
[0013] According to the above technical means, a first vibration isolation part is provided to provide rigid support for the second vibration isolation part, and to facilitate reliable connection between the connecting part of the limiting member and the first vibration isolation member. The extending part of the limiting member is used to cover the second vibration isolation part, so that when the first vibration isolation member moves up and down relative to the supporting assembly, the abutment between the extending part and the supporting assembly can prevent the first vibration isolation member from detaching from the supporting assembly when the first vibration isolation member moves relative to the supporting assembly.
[0014] Furthermore, at least one connector is disposed on one of the connection portion and the first vibration isolation portion, and at least one connector slot is disposed on the other, and the connector is connected to the connector slot in a one-to-one correspondence.
[0015] According to the above technical means, the connecting part and the first vibration isolation part can be connected in an easily disassembled manner to facilitate assembly of the two.
[0016] Furthermore, the first vibration isolation member further comprises a third vibration isolation portion, the third vibration isolation portion is arranged outside the second vibration isolation portion, and one side of the third vibration isolation portion is connected to the second vibration isolation portion, and the other side opposite thereto is connected to the support assembly;
[0017] The extending portion is sequentially covered on the second vibration isolation portion and the third vibration isolation portion.
[0018] According to the above technical means, the first vibration isolation part and the third vibration isolation part serve as the inner and outer reinforcement layers of the second vibration isolation part, so that one side of the second vibration isolation part is tightly connected to the supporting assembly through the third vibration isolation part, and the other side of the second vibration isolation part is conveniently connected to the connecting part of the limiting member through the first vibration isolation part, so that the first vibration isolation assembly as a whole is firmly connected to the supporting assembly, and the extension part is sequentially covered on the second vibration isolation part and the third vibration isolation part to ensure that when the third vibration isolation part moves relative to the supporting assembly, it abuts against the supporting assembly through the extension part, thereby having a limiting effect on the movement of the third vibration isolation part.
[0019] Furthermore, at least one fastener is included, the first vibration isolation member is provided with a first assembly portion, and the first assembly portion is located on the first vibration isolation portion;
[0020] The limiting member is provided with a second assembly portion, the second assembly portion is located on the extending portion, the first assembly portion and the second assembly portion are communicated with each other, and the fastener is connected to the power assembly via the second assembly portion and the first assembly portion.
[0021] According to the above technical means, it is convenient to reliably connect the first vibration isolation component to the powertrain.
[0022] Further, the second vibration isolation component comprises a mounting member, at least one second vibration isolation member and at least one third vibration isolation member, the mounting member has a first accommodating portion and a second accommodating portion arranged in sequence from the inside to the outside, and a side of the mounting member facing away from the second accommodating portion is used to connect with the support component;
[0023] The second vibration isolating member is arranged on the first accommodating portion and is used to be connected to the vehicle frame; the third vibration isolating member is arranged on the second accommodating portion.
[0024] According to the above technical means, the second vibration isolation member is used to be connected to the vehicle frame. When the vibration generated on the powertrain is transmitted from the first vibration isolation member to the second vibration isolation member, the second vibration isolation member and the third vibration isolation member further play a role in vibration reduction and vibration absorption, so as to reduce the vibration energy transmitted to the vehicle frame as much as possible.
[0025] Furthermore, the number of the third vibration isolators is four, and a plurality of accommodating sub-areas are arranged at intervals on the second accommodating portion, and each of the accommodating sub-areas is arranged in one-to-one correspondence with the third vibration isolators.
[0026] According to the above technical means, a plurality of accommodating sub-areas are arranged at intervals on the second accommodating portion, and a through hole is arranged between two adjacent accommodating sub-areas on the mounting member. The accommodating sub-areas are used to place the third vibration isolation member, thereby reducing the weight of the mounting member and making the second vibration isolation assembly have a lightweight effect.
[0027] Furthermore, the second vibration isolation portion, the second vibration isolation member and the third vibration isolation member are all rubber members.
[0028] According to the above technical means, the vibration generated on the powertrain is transmitted to the rubber part, and the vibration energy is converted into heat energy through the elastic deformation of the rubber part, thereby playing the role of vibration reduction and vibration absorption.
[0029] Further, the support assembly includes a first support member and a second support member arranged on the first support member, the first support member is provided with at least one first mounting portion, and the first vibration isolation assembly is arranged on the first mounting portion;
[0030] The second support member is provided with at least one second mounting portion, and the second vibration isolation assembly is arranged on the second mounting portion.
[0031] According to the above technical means, the first vibration isolation assembly and the second vibration isolation assembly are reliably connected to the support assembly, so that the first vibration isolation assembly is connected to the powertrain, and the second vibration isolation assembly is connected to the frame, thereby making the powertrain stably assembled on the vehicle.
[0032] A car comprises a car body and any one of the above-mentioned secondary vibration isolation suspension structures connected to the car body.
[0033] Beneficial effects of this application:
[0034] (1) The secondary vibration isolation suspension structure provided in the embodiment of the present application is provided with a first vibration isolation member and at least two limiting members. The two limiting members clamp the first vibration isolation member together, and the projection of the limiting members toward the first vibration isolation member is larger than the projection of the first mounting portion on the support assembly. When the first vibration isolation member moves relative to the first mounting portion, the limiting members will abut against the first mounting portion, that is, the two relatively arranged limiting members have a stopper effect in the axial direction of the first vibration isolation member. When the first vibration isolation member shakes up and down relative to the first mounting portion, the two relatively arranged limiting members on the first vibration isolation member can prevent the first vibration isolation member from detaching from the first mounting portion. At the same time, the powertrain and the limiting members can still remain connected, which can prevent the powertrain from falling off the support assembly;
[0035] (2) With the secondary vibration isolation suspension structure provided in the embodiment of the present application, when the vibration isolation effect of the first vibration isolation member fails and the vibration of the powertrain increases during operation, collisions between the relatively arranged limit members and the support assembly occur frequently, and the abnormal noise generated by the collision enables the driver to promptly perceive and discover the failure of the first vibration isolation member and replace the first vibration isolation member with a new one, which can effectively prevent the occurrence of safety accidents such as the powertrain falling off the support assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments that conform to the present application, and together with the specification, are used to explain the principles of the present application.
[0037] Figure 1 A schematic diagram of the structure of a secondary vibration isolation suspension structure provided in an embodiment of the present application;
[0038] Figure 2 for Figure 1 An exploded schematic diagram of the first vibration isolation assembly;
[0039] Figure 3 for Figure 1 Partial schematic diagram of the AA in the middle;
[0040] Figure 4 for Figure 3 Schematic diagram of the connection between the second vibration isolation component and the powertrain.
[0041] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.
[0042] Description of reference numerals:
[0043] 1-support assembly; 11-first support member; 111-first mounting portion; 12-second support member; 121-second mounting portion;
[0044] 2-first vibration isolation assembly; 21-first vibration isolation member; 211-first vibration isolation portion; 2111-insertion slot; 2112-first assembly portion; 212-second vibration isolation portion; 213-third vibration isolation portion; 22-limiting member; 221-connecting portion; 222-extension portion; 2221-second assembly portion;
[0045] 3- Fasteners;
[0046] 4-second vibration isolation assembly; 41-mounting member; 411-first accommodating portion; 412-second accommodating portion; 4121-accommodating sub-area; 42-second vibration isolation member; 43-third vibration isolation member;
[0047] 5-Powertrain. DETAILED DESCRIPTION
[0048] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application and how the technical solutions in the present application solve the above-mentioned technical problems will be clearly and completely described below with specific embodiments and in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0049] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.
[0050] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.
[0051] like Figures 1 to 4 As shown, this embodiment proposes a two-stage vibration isolation suspension structure, including a support assembly 1, at least one first vibration isolation assembly 2 and at least one second vibration isolation assembly 4; the second vibration isolation assembly 4 is arranged on the support assembly 1, and is used to connect with the vehicle frame. The first vibration isolation assembly 2 includes a first vibration isolation member 21 and at least two limit members 22, the first vibration isolation member 21 is arranged on the support assembly 1, and the two limit members 22 are coaxially arranged with the first vibration isolation member 21, and are respectively arranged at opposite ends of the first vibration isolation member 21; the projection of the first vibration isolation member 21 toward the limit member 22 is located inside the limit member 22; the first vibration isolation member 21 and the limit member 22 are both used to connect with the powertrain 5 of the vehicle.
[0052] The first vibration isolation component 2 and the second vibration isolation component 4 are arranged on the support component 1 at intervals, wherein the first vibration isolation component 2 is used to connect the powertrain 5, and the second vibration isolation component 4 is used to connect to the frame of the vehicle, so that the powertrain 5 and the vehicle body are assembled as one, which is convenient for connecting the powertrain 5 with the vehicle's suspension system, braking system and other related components to ensure the normal operation of the vehicle.
[0053] During actual use, the powertrain 5 will produce large torque fluctuations in scenarios such as sudden acceleration, sudden deceleration, gear shifting, and electric shutdown, thereby generating large vibrations. The first vibration isolation component 2 and the second vibration isolation component 4 can block the vibration transmission path between the powertrain 5 and the vehicle body to reduce the vibration transmission from the vibration source to the vehicle body; and the first vibration isolation component 2 connected to the powertrain 5 and the second vibration isolation component 4 connected to the vehicle frame include structural parts with vibration absorption function, which can absorb part of the vibration energy from the vibration source to the vehicle body, thereby reducing the vibration transmitted from the powertrain 5 to the vehicle body.
[0054] In this embodiment, the support assembly 1 includes a first support member 11 and a second support member 12, and the first support member 11 is provided with at least one first mounting portion 111, and the second support member 12 is provided with at least one second mounting portion 121. Exemplarily, the first support member 11 and the second support member 12 can be made of aluminum alloy and processed in an integral molding manner, so that the support assembly 1 has good integrity and load-bearing capacity; the first mounting portion 111 can be a mounting hole for mounting the first vibration isolation assembly 2, and the second mounting portion 121 can be a mounting hole for mounting the second vibration isolation assembly 4.
[0055] It is understandable that the number, size and shape of the first mounting portion 111 and the second mounting portion 121 are respectively matched with the first vibration isolation assembly 2 and the second vibration isolation assembly 4. In some embodiments, a plurality of weight reduction holes are provided at intervals on the first support member 11 to make the first support member 11 lightweight.
[0056] Specifically, the first vibration isolation component 2 includes a first vibration isolation member 21 and at least two limiting members 22. The first vibration isolation member 21 can be inserted into the first mounting portion 111 by means of interference fit. The limiting members 22 are respectively arranged at opposite ends of the first vibration isolation member 21, and the limiting members 22 are arranged coaxially with the first vibration isolation member 21. The projection of the first vibration isolation member 21 toward the limiting member 22 is located inside the limiting member 22. In other words, the two relatively arranged limiting members 22 clamp the first vibration isolation member 21 together, and the projection of the limiting member 22 toward the first vibration isolation member 21 is larger than the projection of the first mounting portion 111. Therefore, when the first vibration isolation member 21 moves relative to the first mounting portion 111, the limiting member 22 will abut against the first mounting portion 111, that is, the two relatively arranged limiting members 22 have a stopping effect in the axial direction of the first vibration isolation member 21.
[0057] When in actual use, the first vibration isolator 21 and the stopper 22 are both connected to the power assembly 5. The first vibration isolator 21 will move axially or radially due to the inertia force when the vehicle is running, which will cause the first vibration isolator 21 to wear over time, so that the interference fit force between the first vibration isolator 21 and the first mounting portion 111 gradually decreases, and the first vibration isolator 21 is easy to shake up and down relative to the first mounting portion 111. The two stoppers 22 arranged opposite to each other on the first vibration isolator 21 are in contact with the first mounting portion 111, so that the first vibration isolator 21 can be prevented from detaching from the first mounting portion 111, and at the same time, the power assembly 5 and the stopper 22 can still remain connected, so that the power assembly 5 can be prevented from falling off from the first support member 11.
[0058] In the embodiment, the first vibration isolation member 21 includes a first vibration isolation portion 211 and a second vibration isolation portion 212. For example, the first vibration isolation portion 211 is a metal shell, and the second vibration isolation portion 212 is a rubber member. The rubber member can be connected to the side wall of the metal shell by vulcanization bonding, and the side of the rubber member facing away from the metal shell is inserted on the first mounting portion 111 by interference fit. The first vibration isolation portion 211 is used to connect with the powertrain 5, and the vibration generated on the powertrain 5 is transmitted to the rubber member, and the vibration energy is converted into heat energy through the elastic deformation of the rubber member, thereby playing a role in vibration reduction and vibration absorption.
[0059] Further, the limiter 22 includes a connecting portion 221 and an extending portion 222. For example, the connecting portion 221 and the extending portion 222 may be stamped sheet metal parts, and the extending portion 222 may be a flange structure formed by bending the first vibration isolation portion 211 toward the second vibration isolation portion 212, so that the extending portion 222 is covered on the rubber part. The connecting portion 221 may be connected to the metal shell by means of rivets or snaps. By providing the first vibration isolation portion 211, a rigid support is provided for the second vibration isolation portion 212, and the connecting portion 221 of the limiter 22 is reliably connected to the first vibration isolation portion 21 as a whole.
[0060] In this embodiment, the connection part 221 and the first vibration isolation part 211 can be connected in an easily disassembled manner to facilitate assembly of the two. For example, a plug connector is provided on the connection part 221 in an integrated manner, and a plug slot 2111 matching the plug connector is provided on the first vibration isolation part 211. For example, the plug connector and the plug slot 2111 can be matching keyway structures, so as to ensure that the connection part 221 and the first vibration isolation part 211 are reliably connected and easy to assemble.
[0061] It is understandable that the connector can also be set on the first vibration isolation part 211, and the plug-in slot 2111 is correspondingly set on the connecting part 221. The specific setting position can be adaptively set according to the actual structure of the connecting part 221 and the first vibration isolation part 211 and the difficulty of processing. This embodiment does not make specific limitations on this.
[0062] In actual use, the rubber part will generate internal friction during the deformation and recovery process, and this friction will consume vibration energy and convert it into heat energy, which will cause the rubber part to wear over time, increasing the gap between the metal shell and the first mounting portion 111, and the metal shell and the rubber part are easy to shake up and down on the first mounting portion 111. At this time, the extension part 222 is covered on the rubber part, and the extension part 222 can prevent the metal shell and the rubber part from being separated from the first mounting portion 111 by abutting against the upper and lower parts of the first mounting portion 111, thereby preventing the first support member 11 from being separated from the power assembly 5, and ensuring that the power assembly 5 is reliably connected to the first support member 11.
[0063] During actual use, the vibration isolation function of the first vibration isolation member 21 fails due to wear or breakage of the rubber member, and the vibration of the powertrain 5 increases during operation. At this time, the relatively arranged limit members 22 and the support assembly 1 frequently collide with each other, and the abnormal noise generated by the collision enables the driver to promptly perceive and discover the failure of the first vibration isolation member 21, and promptly replace the new first vibration isolation member 21, thereby effectively avoiding the occurrence of safety accidents such as the falling off of the powertrain 5. The secondary vibration isolation suspension structure provided in the embodiment of the present application has a preventive effect on this.
[0064] In order to facilitate the assembly of the first vibration isolation component 2 and the powertrain 5, the secondary vibration isolation suspension structure provided in the embodiment of the present application also includes at least one fastener 3, and a first assembly portion 2112 is provided on the first vibration isolation portion 211, and a second assembly portion 2221 is provided on the extension portion 222. Exemplarily, the fastener 3 can be a structural member such as a bolt, and the first assembly portion 2112 and the second assembly portion 2221 are both bolt holes that match the bolts, and the bolt holes on the two limit members 22 are sequentially connected with the bolt holes on the first vibration isolation portion 211. In other words, the studs pass through the bolt holes in turn and are locked with the assembly holes reserved on the powertrain 5 to achieve a reliable connection between the first vibration isolation component 2 and the powertrain 5.
[0065] In this embodiment, in order to improve the overall strength of the first vibration isolation member 21 and the connection stability between the second vibration isolation part 212 and the first mounting part 111, a third vibration isolation part 213 is arranged on the side of the second vibration isolation part 212 facing the first mounting part 111. Exemplarily, the third vibration isolation part 213 may also be a metal shell, that is, the two metal shells are connected by vulcanized rubber parts, so that the metal shells serve as inner and outer reinforcement layers of the rubber parts, so that one side of the rubber part is tightly connected to the first mounting part 111 through the external metal shell, and the other side of the rubber part is conveniently connected to the connecting part 221 through the internal metal shell, so that the first vibration isolation component 2 is firmly connected to the support component 1 as a whole.
[0066] It can be understood that the third vibration isolation portion 213 is provided on the side of the second vibration isolation portion 212 facing the first mounting portion 111, and the extension portion 222 extends from the second vibration isolation portion 212 to the third vibration isolation portion 213, that is, the projection of the third vibration isolation portion 213 toward the extension portion 222 is located within the extension portion 222, so as to ensure that when the third vibration isolation portion 213 moves relative to the first mounting portion 111, the extension portion 222 can still abut against the first mounting portion 111, thereby limiting the movement of the third vibration isolation portion 213.
[0067] In this embodiment, the second vibration isolation component 4 includes a mounting member 41, at least one second vibration isolation member 42 and at least one third vibration isolation member 43. Specifically, a first accommodating portion 411 and a second accommodating portion 412 are sequentially arranged on the mounting member 41 from the inside to the outside by means of one-piece molding, and the first accommodating portion 411 and the second accommodating portion 412 are both hollow cavities. The mounting member 41 and the second support member 12 can be integrally processed by means of one-piece molding, or the mounting member 41 can be processed separately, and then the side of the mounting member 41 facing away from the second accommodating portion 412 is fixed to the second mounting portion 121 of the second support member 12 by means of interference fit. Among them, the first accommodating portion 411 is used to set the second vibration isolation member 42, and the second accommodating portion 412 is used to set the third vibration isolation member 43. It can be understood that the size and structure of the first accommodating portion 411 and the second accommodating portion 412 are respectively matched with the second vibration isolation member 42 and the third vibration isolation member 43.
[0068] Exemplarily, the second vibration isolating member 42 and the third vibration isolating member 43 may be vibration absorbing structures such as rubber members, and the rubber members are fixed to the corresponding accommodation portions of the mounting member 41 by vulcanization bonding.
[0069] In actual use, the second vibration isolation member 42 is used to connect with the vehicle frame. When the vibration generated on the powertrain 5 is transmitted from the first vibration isolation component 2 to the second vibration isolation component 4, the second vibration isolation member 42 and the third vibration isolation member 43 further play a role in vibration reduction and vibration absorption, so as to reduce the vibration energy transmitted to the vehicle frame as much as possible.
[0070] In order to make the second vibration isolation component 4 have a lightweight structure, a plurality of accommodating sub-areas 4121 are arranged at intervals on the second accommodating portion 412, and a through hole is arranged between two adjacent accommodating sub-areas 4121 on the mounting member 41, so as to reduce the weight of the mounting member 41, and the third vibration isolation member 43 is arranged corresponding to the accommodating sub-area 4121. Exemplarily, in this embodiment, the number of the third vibration isolation members 43 is four, and the four third vibration isolation members 43 are evenly distributed in the circumference of the second vibration isolation member 42. The number of the third vibration isolation members 43 can also be other, which can be adaptively set according to actual use requirements.
[0071] This embodiment also provides a car, including a car body, on which the above-mentioned secondary vibration isolation suspension structure is provided.
[0072] Among them, the car body can be a fuel model, an electric model, or a hybrid model. The car body includes a body structure, a suspension system, a braking system, a transmission system, an electrical system, a cooling system, and a powertrain 5, etc. The powertrain 5 is assembled on the body structure through the secondary vibration isolation suspension structure provided in the embodiment of the present application.
[0073] By setting two relative limiting members 22, the first vibration isolation member 21 is limited on the support assembly 1 to prevent the support assembly 1 from being separated from the power assembly 5 along the fracture due to damage or breakage of the first vibration isolation member 21, thereby improving the connection stability of the power assembly 5 on the support assembly 1, thereby improving the performance stability and driving safety of the entire vehicle.
[0074] Furthermore, the vibration transmission path between the powertrain 5 and the vehicle body can be blocked by the first vibration isolation component 2 and the second vibration isolation component 4 to reduce the vibration transmission from the vibration source to the vehicle body; and the first vibration isolation component 2 connected to the powertrain 5 and the second vibration isolation component 4 connected to the frame include structural parts with vibration absorption function such as rubber, which can absorb part of the vibration energy from the vibration source to the vehicle body, thereby reducing the vibration transmitted from the powertrain 5 to the vehicle body to improve driving comfort.
[0075] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
[0076] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The description and embodiments are only considered as exemplary, and the scope of the present application is limited only by the appended claims.
Claims
1. A secondary vibration isolation suspension structure, characterized in that: The invention comprises a support assembly (1), at least one first vibration isolation assembly (2) and at least one second vibration isolation assembly (4); the second vibration isolation assembly (4) is arranged on the support assembly (1) and is used to be connected to a vehicle frame; The first vibration isolation component (2) comprises a first vibration isolation member (21) and at least two limiting members (22), wherein the first vibration isolation member (21) is arranged on the supporting component (1), and the two limiting members (22) are coaxially arranged with the first vibration isolation member (21) and are respectively arranged at two opposite ends of the first vibration isolation member (21); The projection of the first vibration isolating member (21) toward the limiting member (22) is located inside the limiting member (22); the first vibration isolating member (21) and the limiting member (22) are both used to be connected to the powertrain (5) of the vehicle.
2. The secondary vibration isolation suspension structure according to claim 1, characterized in that: The first vibration isolation member (21) comprises a first vibration isolation portion (211) and a second vibration isolation portion (212) which are sequentially connected from the inside to the outside, and a surface of the second vibration isolation portion (212) facing away from the first vibration isolation portion (211) is connected to the support assembly (1); The limiting member (22) comprises an extension portion (222) and a connecting portion (221) arranged on the extension portion (222), the connecting portion (221) being connected to the first vibration isolation portion (211), and the extension portion (222) being covered on the second vibration isolation portion (212).
3. The secondary vibration isolation suspension structure according to claim 2 is characterized in that: At least one plug-in connector is provided on one of the connection portion (221) and the first vibration isolation portion (211), and at least one plug-in slot (2111) is provided on the other, and the plug-in connector is connected to the plug-in slot (2111) in a one-to-one correspondence.
4. The secondary vibration isolation suspension structure according to claim 2, characterized in that: The first vibration isolation member (21) further comprises a third vibration isolation portion (213), wherein the third vibration isolation portion (213) is arranged outside the second vibration isolation portion (212), and one surface of the third vibration isolation portion (213) is connected to the second vibration isolation portion (212), and the other surface opposite thereto is connected to the support assembly (1); The extension portion (222) is sequentially covered on the second vibration isolation portion (212) and the third vibration isolation portion (213).
5. The secondary vibration isolation suspension structure according to any one of claims 2 to 4, characterized in that: It also includes at least one fastener (3), the first vibration isolation member (21) is provided with a first assembly portion (2112), and the first assembly portion (2112) is located on the first vibration isolation portion (211); The limiting member (22) is provided with a second assembly portion (2221), the second assembly portion (2221) is located on the extending portion (222), the first assembly portion (2112) and the second assembly portion (2221) are connected, and the fastener (3) is connected to the power assembly (5) via the second assembly portion (2221) and the first assembly portion (2112).
6. The secondary vibration isolation suspension structure according to any one of claims 2 to 4, characterized in that: The second vibration isolation component (4) comprises a mounting member (41), at least one second vibration isolation member (42) and at least one third vibration isolation member (43); the mounting member (41) has a first accommodating portion (411) and a second accommodating portion (412) arranged in sequence from the inside to the outside, and a surface of the mounting member (41) facing away from the second accommodating portion (412) is used for connecting with the support component (1); The second vibration isolating member (42) is arranged on the first accommodating portion (411) and is used to be connected to the vehicle frame; and the third vibration isolating member (43) is arranged on the second accommodating portion (412).
7. The secondary vibration isolation suspension structure according to claim 6, characterized in that: The number of the third vibration isolating members (43) is four, and a plurality of accommodating sub-areas (4121) are arranged at intervals on the second accommodating portion (412), and each of the accommodating sub-areas (4121) is arranged in a one-to-one correspondence with the third vibration isolating member (43).
8. The secondary vibration isolation suspension structure according to claim 6, characterized in that: The second vibration isolation portion (212), the second vibration isolation member (42) and the third vibration isolation member (43) are all rubber members.
9. The secondary vibration isolation suspension structure according to any one of claims 1 to 4, characterized in that: The support assembly (1) comprises a first support member (11) and a second support member (12) arranged on the first support member (11); the first support member (11) is provided with at least one first mounting portion (111); and the first vibration isolation assembly (2) is arranged on the first mounting portion (111); At least one second mounting portion (121) is provided on the second supporting member (12), and the second vibration isolation assembly (4) is arranged on the second mounting portion (121).
10. An automobile, characterized in that: The invention comprises a vehicle body and a secondary vibration isolation suspension structure as claimed in any one of claims 1 to 9 connected to the vehicle body.