Suspension structure, vehicle and suspension mounting method

Abstract

The invention discloses a suspension structure, a vehicle and a suspension installation method, and relates to the technical field of automobiles, the suspension structure is used for the vehicle, the vehicle is provided with a vehicle body and an engine connected with the vehicle body, and the suspension structure comprises an installation support used for being connected with the engine; the elastic bodies are arranged on the side, away from the engine, of the mounting support, the multiple elastic bodies are stacked, one of the multiple elastic bodies serves as a supporting body and is used for being connected with a vehicle body, and the number of the elastic bodies between the supporting body and the mounting support is adjustable. According to the technical scheme, the vehicle suspension structure is improved, the suspension rigidity is adjustable, the adjustment range of the suspension rigidity is widened, and the suspension adjustment flexibility is improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a suspension structure, a vehicle and a suspension installation method. Background Art

[0002] In the design and development of power suspension systems, the stiffness of the vibration isolation pad directly affects the overall performance of the suspension and the noise, vibration and harshness (NVH) characteristics of the vehicle. In order to meet different application requirements and optimize NVH performance, the stiffness of the suspension needs to be adjusted by changing the hardness of the isolation pad material during the design stage and subsequent adjustment process of the suspension. This method has a relatively complicated adjustment process, and the adjustment range is limited by the properties of the isolation pad material itself. Finding a more efficient and flexible way to adjust the stiffness of the vibration isolation pad has become one of the problems that need to be solved in this field. Summary of the invention

[0003] The main purpose of the present invention is to provide a suspension structure, a vehicle and a suspension installation method, aiming to improve the flexibility of suspension stiffness adjustment and increase the suspension stiffness adjustment range.

[0004] To achieve the above object, the present invention provides a suspension structure for a vehicle, wherein the vehicle has a vehicle body and an engine connected to the vehicle body, and the suspension structure comprises: A mounting bracket for connecting the engine; An elastomer is arranged on a side of the mounting bracket away from the engine. A plurality of elastomers are stacked and one of the plurality of elastomers is selected as a supporting body and used to connect the vehicle body, so that the number of the elastomers between the supporting body and the mounting bracket is adjustable.

[0005] In one embodiment, the suspension structure includes a connecting bracket, and a connecting bracket is provided on one end of each of the elastic bodies away from the mounting bracket, and the elastic body serving as the supporting body is connected to the vehicle body through the correspondingly provided connecting bracket.

[0006] In one embodiment, the mounting bracket and the connecting bracket are bonded to the corresponding elastomer.

[0007] In one embodiment, the plurality of elastic bodies at least include a first elastic body and a second elastic body, the first elastic body is arranged close to the vehicle body, the second elastic body is arranged between the first elastic body and the mounting bracket, and the plurality of connecting brackets include a first connecting bracket arranged corresponding to the first elastic body and a second connecting bracket arranged corresponding to the second elastic body; When the first elastic body is used as a supporting body, the first connecting bracket is directly connected to the vehicle body; when the second elastic body is used as a supporting body, the suspension structure further includes a fixed bracket, and the second connecting bracket is connected to the vehicle body through the fixed bracket.

[0008] In one embodiment, the fixing bracket is detachably connected to the second connecting bracket.

[0009] In one embodiment, a threaded hole is provided on one end of the fixing bracket for connecting with the second connecting bracket, and a light hole is provided on the second connecting bracket. A fastener passes through the light hole and is locked and connected with the threaded hole.

[0010] In one embodiment, the fixed bracket is provided with a limiting portion, and the limiting portion is connected to the second connecting bracket to limit the relative rotation of the connecting bracket and the fixed bracket.

[0011] In one embodiment, the limiting portion is configured as a limiting step, and the limiting step is provided at one end of the fixing bracket connected to the second connecting bracket, and the side edge of the second connecting bracket abuts against the limiting step.

[0012] The present invention also provides a vehicle, comprising the above-mentioned suspension structure.

[0013] The present invention also proposes a suspension installation method for installing the above-mentioned suspension structure, and the suspension installation method comprises the following steps: Determine the stiffness requirements of the required suspension structure based on the vehicle's suspension system; connecting the mounting bracket to the engine; According to the stiffness requirement, one of the plurality of elastic bodies is selected as a supporting body and connected to the vehicle body.

[0014] In one embodiment, the suspension installation method further comprises the following steps: determining whether a vibration absorber is required based on the design of the suspension system of the vehicle; Depending on whether a vibration absorber is required, if so, the elastic body between the support body and the vehicle body is in a free state; otherwise, the elastic body between the support body and the vehicle body is in a compressed state.

[0015] In the technical solution of the present invention, the suspension structure includes a mounting bracket connected to the engine, and also includes an elastomer arranged on the mounting bracket on a side away from the engine. The elastomers are stacked in multiple layers. During installation, any one of the multiple elastomers can be selected as a supporting body to be connected to the vehicle body. In this way, the number of elastomers between the mounting bracket and the supporting body can be adjusted, that is, the number of elastomers between the mounting bracket and the vehicle body can be adjusted. Since the elastomers between the mounting bracket and the vehicle body are stacked, it is equivalent to the elastomers being connected in series. Changing the number of elastomers in series can change the overall stiffness after the series connection, thereby realizing flexible adjustment of the stiffness of the suspension structure, improving the installation flexibility and adjustment convenience of the suspension structure, and compared with changing the elasticity of the traditional seismic isolation pad material, the stiffness adjustment range in this solution is determined by the number of elastomers, and the number of elastomers can be more or less, so the stiffness adjustment range will be larger, enhancing the versatility of the suspension structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 A structural schematic diagram of a suspension structure provided by the present invention; Figure 2 Another structural schematic diagram of the suspension structure provided by the present invention; Figure 3 A schematic diagram of a structure of the suspension structure provided by the present invention connected to a vehicle body; Figure 4 Another schematic diagram of the structure of the suspension structure provided by the present invention connected to the vehicle body; Figure 5 Another structural schematic diagram of the connection between the suspension structure provided by the present invention and the vehicle body.

[0018] Description of Figure Numbers: 10. Vehicle body; 100. Mounting bracket; 200. Elastomer; 210. First elastomer; 220. Second elastomer; 300. Connecting bracket; 310. First connecting bracket; 320. Second connecting bracket; 330. Light hole; 400. Fixing bracket; 410. Threaded hole; 420. Limiting portion.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] In order to achieve flexible adjustment of the suspension stiffness and increase the adjustment range of the suspension stiffness, the technical solution proposes a suspension structure for a vehicle, the vehicle having a body 10 and an engine connected to the body 10, and the suspension structure includes: A mounting bracket 100 for connecting to the engine; The elastomer 200 is disposed on a side of the mounting bracket 100 away from the engine. A plurality of elastomers 200 are stacked and one of the plurality of elastomers 200 is selected as a supporting body and used to connect the vehicle body 10, so that the number of elastomers 200 between the supporting body and the mounting bracket 100 is adjustable.

[0024] In the technical solution of the present invention, the suspension structure includes a mounting bracket 100 connected to the engine, and also includes an elastic body 200 arranged on the side of the mounting bracket 100 away from the engine. The elastic body 200 is stacked in multiple layers. During installation, any one of the multiple elastic bodies 200 can be selected as a supporting body to be connected to the vehicle body 10, so that the number of elastic bodies 200 between the mounting bracket 100 and the supporting body can be adjusted, that is, the number of elastic bodies 200 between the mounting bracket 100 and the vehicle body 10 can be adjusted, and the mounting bracket 100 and the vehicle body 10 can be connected. Since the elastomers 200 between 10 are stacked, it is equivalent to that the elastomers 200 are connected in series. Changing the number of elastomers 200 connected in series can change the overall stiffness after the series connection, thereby realizing flexible adjustment of the stiffness of the suspension structure, improving the installation flexibility and adjustment convenience of the suspension structure, and compared with changing the elasticity of the traditional seismic isolation pad material, the stiffness adjustment range in this solution is determined by the number of elastomers 200, and the number of elastomers 200 can be more or less, so the stiffness adjustment range will be larger, enhancing the versatility of the suspension structure.

[0025] like Figures 1 to 5 In one embodiment of the present invention, the suspension structure can be used to connect the vehicle body 10 and the engine to reduce the vibration transmitted from the engine to the vehicle body 10 and improve the noise level and NVH performance of the vehicle. The suspension structure includes a mounting bracket 100. The mounting bracket 100 can be a flat plate structure. The mounting bracket 100 is attached to the bottom surface of the engine and can be fixed to the engine by bolts. In order to prevent the suspension structure from rotating relative to the engine, a protruding locating pin can be provided on the top of the mounting bracket 100, and a locating hole is correspondingly provided at the bottom of the engine. The rotation of the mounting bracket 100 is limited by the cooperation of the locating pin and the bolt to ensure the reliability of the installation. In addition, an elastomer 200 is arranged on the side of the mounting bracket 100 away from the engine. The elastomer 200 can be made of rubber material to achieve buffering while ensuring sufficient life. The elastomer 200 can be in the shape of a rectangular parallelepiped as a whole. A plurality of elastomers 200 are stacked in a direction away from the mounting bracket 100. Among them, the elastomer 200 closest to the mounting bracket 100 can be fixed to the mounting bracket 100 by bonding or the like, and the remaining elastomers 200 can also be connected by bonding or the like. The thickness, size, or hardness of the plurality of elastomers 200 can be different. The stiffness can be the same or different, that is, the stiffness of each elastomer 200 can be the same or different, as long as the elastomers 200 are stacked, the number of elastomers 200 is not limited, and the number of elastomers 200 can be increased if the stiffness adjustment range needs to be increased. The specific number of settings can be determined according to the stiffness requirements during vehicle research and development and design; in addition, each elastomer 200 can be provided with a structure for connecting to the vehicle body 10, such as a lug bonded to the elastomer 200, etc., so that each elastomer 200 can be connected to the vehicle body 10 as a supporting body.

[0026] The following is an example to illustrate the method and principle of adjusting the stiffness of the suspension structure. For example, when the elastomer 200 closest to the mounting bracket 100 is connected to the vehicle body 10 as a supporting body, the number of elastomers 200 between the vehicle body 10 and the mounting bracket 100 is one, that is, the engine and the vehicle body 10 are connected by one elastomer 200. At this time, only one elastomer 200 in the suspension structure plays a role, and the stiffness of the suspension structure is the stiffness of the elastomer 200. When any seat supporting body among the other elastomers 200 is connected to the vehicle body 10, the elastomer 200 between the vehicle body 10 and the engine is the supporting body and the elastomer 200 of the supporting body and the mounting bracket 100. These elastomers 200 are stacked and are equivalent to being connected in series. At this time, the stiffness of the suspension structure is the overall stiffness of the elastomers 200 connected in series. By analogy, by connecting different elastomers 200 to the vehicle body 10, the number of elastomers 200 between the supporting body and the mounting bracket 100 can be adjusted, thereby achieving stiffness adjustment.

[0027] In the present technical solution, the stiffness of the suspension structure can be adjusted by only replacing the elastomer 200 connected to the vehicle body 10, without changing the structure and the material properties of the elastomer 200, etc., thereby achieving adaptation to various stiffness requirements, which not only facilitates the adjustment of the stiffness of the engine suspension and improves the flexibility of adjustment, but also eliminates the need to separately design and open molds for the suspension structure for different vehicle models, thereby reducing development costs and shortening development cycles; in addition, the adjustment range of the stiffness of the suspension structure is determined by the number of elastomers 200, and designers can flexibly select the number of elastomers 200 according to the stiffness requirements of the vehicle suspension system. Compared with the method of changing the elasticity of the traditional isolation pad material to change the stiffness, the number of elastomers 200 can be more or less, so the adjustment range of the stiffness will be larger, which also enhances the versatility of the suspension structure; of course, the suspension structure in the present solution is not only suitable for engine connection, but also can be applied to other equipment that needs to absorb vibration, such as range extenders, etc., which are not limited here.

[0028] like Figure 1In one embodiment of the present invention, the suspension structure includes a connecting bracket 300, and a connecting bracket 300 is provided at one end of each elastic body 200 away from the mounting bracket 100, and the elastic body 200 as the supporting body is connected to the vehicle body 10 through the corresponding connecting bracket 300. In this solution, the connecting bracket 300 is configured as a long flat plate structure, and a connecting bracket 300 is provided at one end of each elastic body 200 away from the mounting bracket 100. Specifically, the connecting bracket 300 can be attached to one end of each elastic body 200 away from the mounting bracket 100, and connected to the elastic body 200 by bonding or other means. In order to ensure the connection strength with the vehicle body 10, the connecting bracket 300 can be made of high-strength materials such as steel, and both ends of the connecting bracket 300 can protrude from the side of the elastic body 200. During installation, the elastic body 200 as the supporting body can be connected and fixed to the vehicle body 10 through the corresponding connecting bracket 300, and can be specifically connected by a detachable but highly reliable connection method such as screw connection or clamping. In this way, setting up the connecting bracket 300 not only facilitates the connection between the elastomer 200 and the vehicle body 10, but also after the connection, the connecting bracket 300 can provide support for the elastomer 200, which helps to disperse stress and extend the service life of the elastomer 200.

[0029] In addition, in the present solution, the elastomers 200 that are not connected in series below the supporting body and the connecting brackets 300 corresponding to the elastomers 200 can also jointly constitute a vibration absorber. Because these elastomers 200 are not clamped by the vehicle body 10 and the engine and are in a freely suspended state, these elastomers 200 can further absorb vibrations through free vibration. The principle of absorbing vibrations is the same as that of the vibration absorber, which will not be elaborated here. The stiffness of this vibration absorber is equivalent to the stiffness of these elastomers 200 after being connected in series, and the mass is the total mass of all the connecting brackets 300, and the damping can be obtained through experimental testing. In this way, all the elastomers 200 can play a shock-absorbing role, which is beneficial to further reduce the noise level of the vehicle and improve the NVH performance. At the same time, the separately installed vibration absorbers are omitted, which is beneficial to reduce costs and reduce the complexity of vehicle design.

[0030] like Figure 1In one embodiment of the present invention, the mounting bracket 100 and the connecting bracket 300 are bonded to the corresponding elastomer 200; specifically, the elastomer 200 in this solution is made of rubber material. In order to simplify the process, the mounting bracket 100 and each connecting bracket 300 are tightly combined with the elastomer 200 by vulcanization bonding, and two adjacent elastomers 200 are vulcanized and bonded to the connecting bracket 300 between them. By forming chemical bonds between the elastomer 200, the connecting bracket 300 and the mounting bracket 100 under high temperature and high pressure conditions, this connection method can not only provide a stronger bonding force than traditional bonding, ensuring that the suspension structure can maintain a stable connection state even under long-term use and extreme conditions, thereby improving the reliability of the suspension structure, but also can simultaneously complete the molding and connection process of the mounting bracket 100, the connecting bracket 300 and the elastomer 200 in a single process, thereby simplifying the production process, improving production efficiency, and reducing production costs.

[0031] like Figures 1 to 5 In one embodiment of the present invention, the plurality of elastomers 200 include at least a first elastomer 210 and a second elastomer 220, the first elastomer 210 is arranged close to the vehicle body 10, and the second elastomer 220 is arranged between the first elastomer 210 and the mounting bracket 100, and the plurality of connecting brackets 300 include a first connecting bracket 310 arranged corresponding to the first elastomer 210 and a second connecting bracket 320 arranged corresponding to the second elastomer 220; when the first elastomer 210 serves as a supporting body, the first connecting bracket 310 is directly connected to the vehicle body 10; when the second elastomer 220 serves as a supporting body, the suspension structure further includes a fixed bracket 400, and the second connecting bracket 320 is connected to the vehicle body 10 via the fixed bracket 400.

[0032] Specifically, the first elastomer 210 is the elastomer 200 closest to the vehicle body 10, the second elastomer 220 is the elastomer 200 between the first elastomer 210 and the mounting bracket 100, the connecting bracket 300 includes a first connecting bracket 310 and a second connecting bracket 320, the first connecting bracket 310 is a connecting bracket 300 correspondingly arranged on the first elastomer 210, and the second connecting bracket 320 is a connecting bracket 300 correspondingly arranged on the second elastomer 220. When the first elastomer 210 is selected as the supporting body, the first connecting bracket 310 is directly connected to the vehicle body 10, so that all the elastomers 200 play a role. The direct connection between the first connecting bracket 310 and the vehicle body 10 can facilitate installation and simplify the connection structure. If the second elastomer 220 is selected as the supporting body, the suspension structure A fixed bracket 400 is provided corresponding to the structure. The fixed bracket 400 is a long sheet metal part. One end of the fixed bracket 400 is connected to the second connecting bracket 320, and the other end is connected to the vehicle body 10. In order to avoid other elastic parts not connected to the supporting body, the fixed bracket 400 can be tilted and extended in a direction away from the suspension structure. The thickness of the fixed bracket 400 can be adjusted according to the connection strength requirements between the engine and the vehicle body 10 during actual driving of the vehicle. In addition, in order to adapt to the connection between different second elastic bodies 220 and the vehicle body 10, the height of the fixed bracket 400 in the height direction of the suspension structure can be designed in a variety of specifications; in addition, in order to improve the reliability of the connection, both ends of each second connecting bracket 320 can be connected to the vehicle body 10 through a fixed bracket 400, so as to increase the connection points to improve the connection strength. This technical solution facilitates the connection between the suspension structure and the vehicle body 10 by introducing the fixed bracket 400, and improves the flexibility when adjusting the stiffness.

[0033] In a further embodiment of the present invention, in order to further improve the flexibility and maintainability of the suspension structure, a detachable connection design is adopted between the fixed bracket 400 and the second connecting bracket 320. When the second elastic body 220 is used as the supporting body, the second connecting bracket 320 is connected to the vehicle body 10 through the fixed bracket 400, and the fixed bracket 400 and the second connecting bracket 320 can be detachably connected by bolt connection, snap connection or other methods; the detachable connection method is not only convenient for disassembling the suspension structure when maintenance is required, but also allows the user to replace different suspension structures at any time according to actual needs to adapt to different rigidity requirements, thereby improving the versatility and flexibility of the suspension structure; in addition, the detachable connection simplifies the vehicle assembly process and reduces assembly time and labor costs.

[0034] like Figures 2 to 5In one embodiment of the present invention, a threaded hole 410 is provided on one end of the fixing bracket 400 for connecting with the second connecting bracket 320, a light hole 330 is provided on the second connecting bracket 320, and a fastener passes through the light hole 330 and is locked and connected with the threaded hole 410. Specifically, a threaded hole 410 is provided on one end of the fixing bracket 400 for connecting with the second connecting bracket 320, and a light hole 330 corresponding to the position of the threaded hole 410 is provided on the second connecting bracket 320; during installation, a fastener (such as a bolt, etc.) passes through the light hole 330 on the second connecting bracket 320 and is locked and connected with the threaded hole 410 on the fixing bracket 400, so that during assembly, the fixing bracket 400 and the second connecting bracket 320 can be fastened by only screwing the fastener, which not only ensures the reliability of the connection, but also improves the convenience of disassembly and assembly.

[0035] like Figure 2 In one embodiment of the present invention, in order to further enhance the connection stability between the fixed bracket 400 and the second connecting bracket 320, a limiting portion 420 is provided on the fixed bracket 400, and the limiting portion 420 cooperates with the second connecting bracket 320 to limit the relative rotation between the connecting bracket 300 and the fixed bracket 400. Specifically, the limiting portion 420 can be a protrusion or a groove on the fixed bracket 400, and the limiting portion 420 matches the groove or protrusion on the second connecting bracket 320. After assembly, the limiting portion 420 is engaged with the structure on the second connecting bracket 320, preventing the fixed bracket 400 and the second connecting bracket 320 from rotating around the fastener, and also preventing the fastener from loosening or dislocation due to vibration or other external forces, thereby ensuring the firmness of the connection.

[0036] A structural form of the limiting portion 420 is given below. Figure 2 In one embodiment of the present invention, the limiting portion 420 is configured as a limiting step, and the limiting step is set on one end of the fixed bracket 400 connected to the second connecting bracket 320, and the side of the second connecting bracket 320 abuts against the limiting step. Specifically, the upper end surface of the end of the fixed bracket 400 connected to the second connecting bracket 320 is raised to form a limiting step structure. When the second connecting bracket 320 is installed in place, its side will fit with the side wall of the limiting step. If the second connecting bracket 320 or the fixed bracket 400 has a tendency to rotate, the limiting step can limit the side of the second connecting bracket 320, thereby preventing the second connecting bracket 320 or the fixed bracket 400 from rotating relative to each other due to vibration or other external forces during use, thereby ensuring the stability of the connection. The use of this structure not only simplifies the design of the limiting portion 420 and facilitates the processing of the limiting portion 420, but also enables the second connecting bracket 320 to be quickly positioned by means of the engagement of the side and the limiting step during installation, thereby reducing assembly time and improving assembly efficiency.

[0037] The present invention also proposes a vehicle, which includes a body 10 and an engine installed on the body 10, the engine and the body 10 are connected through a suspension structure, the specific structure of the suspension structure refers to the above embodiment, since the vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0038] The present invention also proposes a suspension installation method for installing the suspension structure in the above embodiment, and the suspension installation method comprises the following steps: Connect the mounting bracket 100 to the engine; Determine the stiffness requirements of the required suspension structure based on the vehicle's suspension system; Specifically, the required stiffness of the suspension structure can be first determined based on the suspension system design and NVH performance requirements of the vehicle. In this step, the stiffness required for the suspension is obtained by design calculations of the vehicle suspension system or by performing vibration characteristic test analysis. Afterwards, the mounting bracket 100 is fixed to the engine by bolts and other fasteners. Afterwards, according to the stiffness requirements, one is selected from a plurality of stacked elastomers 200 as a supporting body, and then the overall stiffness of the suspension structure is selected. For example, if the elastomer 200 closest to the vehicle body 10 is selected as the supporting body, then it is only necessary to directly connect the corresponding connecting bracket 300 to the vehicle body 10. If other elastomers 200 are selected as the supporting body, it is necessary to use a fixing bracket 400 to connect the connecting bracket 300 of the elastomer 200 to the vehicle body 10 through the fixing bracket 400; Figures 3 to 5 For example, in the first embodiment of this solution, the elastic body 200 is provided with three, Figure 1 The stiffness of the elastic body 200 is K1, K2 and K3 from top to bottom. The suspension structure has three installation states, each of which corresponds to a stiffness. For example, Figure 3 It is installation state 1, when the elastic body 200 corresponding to K1 serves as the supporting body, the stiffness of the suspension structure is K1; Figure 4 This is the second installation state. When the elastic body 200 corresponding to K2 is used as the supporting body, the stiffness of the suspension structure is (K1*K2) / (K1+K2); Figure 5 This is installation state three. When the elastic body 200 corresponding to K3 serves as the supporting body, the stiffness of the suspension structure is (K1*K2*K3) / (K1*K2+K2*K3+K1*K3). During installation, you can choose from the three installation states according to the stiffness required for the suspension.

[0039] In addition, in one embodiment of the present invention, the suspension installation method further includes the following steps: Determine whether shock absorbers are needed based on the design of the vehicle's suspension system; Depending on whether a vibration absorber is required, if so, the elastic body 200 between the support body and the vehicle body 10 is in a free state, and if not, the elastic body 200 between the support body and the vehicle body 10 is in a compressed state.

[0040] In this embodiment, the suspension installation method also expands the consideration of the vibration absorber requirements to further optimize the NVH performance of the vehicle. Specifically, it can also be determined whether a vibration absorber is needed according to the suspension system design of the vehicle. In this step, it is determined whether a vibration absorber needs to be set in the suspension structure to further absorb and dissipate vibration energy according to the specific design of the vehicle and the NVH performance requirements; if a vibration absorber is needed: the elastic body 200 not clamped by the vehicle body 10 and the engine is adjusted to a free hanging state, that is, a non-compressed state, so that these elastic bodies 200 can absorb vibration energy through free vibration, and these elastic bodies 200 and their corresponding connecting brackets 300 together constitute a vibration absorber, whose stiffness is equivalent to the equivalent stiffness of these elastic bodies 200 after being connected in series, and the mass is the total mass of the connecting brackets 300 corresponding to these elastic bodies 200, and the damping coefficient is obtained through experimental testing; if a vibration absorber is not needed, these elastic bodies 200 are fixed and completely compressed by bolts or straps, so that the elastic bodies 200 cannot be deformed, which means that there is no vibration absorber.

[0041] by Figures 3 to 5 For example, when in Figure 3 When the installation state is 1, the elastic bodies 200 corresponding to K2 and K3 can jointly form a vibration absorber with a stiffness of (K2*K3) / (K2+K3) and a mass of 2M (assuming that the mass of all connecting brackets 300 is M). At this time, whether to fully compress K2 and K3 can be determined according to whether the vibration absorber is needed; when in Figure 4 In the second installation state, the elastic body 200 corresponding to K3 can constitute a vibration absorber with a stiffness of K3 and a mass of M. At this time, whether to fully compress K3 can be determined according to whether the vibration absorber is needed. In summary, through the above-mentioned extended suspension installation method, the suspension structure can not only flexibly adjust the stiffness of the suspension structure according to the specific needs of the vehicle, but also determine whether to set the vibration absorber according to the needs, thereby further optimizing the NVH performance of the vehicle.

[0042] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A suspension structure for a vehicle, the vehicle having a vehicle body and an engine connected to the vehicle body, characterized in that: The suspension structure comprises: A mounting bracket for connecting the engine; An elastomer is arranged on a side of the mounting bracket away from the engine. A plurality of elastomers are stacked and one of the plurality of elastomers is selected as a supporting body and used to connect the vehicle body, so that the number of the elastomers between the supporting body and the mounting bracket is adjustable.

2. The suspension structure according to claim 1, characterized in that: The suspension structure includes a connecting bracket. One connecting bracket is arranged on one end of each elastic body away from the mounting bracket. The elastic body serving as a supporting body is connected to the vehicle body through the correspondingly arranged connecting bracket.

3. The suspension structure according to claim 2, characterized in that: The mounting bracket and the connecting bracket are bonded to the corresponding elastic body.

4. The suspension structure according to claim 2, characterized in that: The plurality of elastic bodies at least include a first elastic body and a second elastic body, the first elastic body is arranged close to the vehicle body, the second elastic body is arranged between the first elastic body and the mounting bracket, and the plurality of connecting brackets include a first connecting bracket arranged corresponding to the first elastic body and a second connecting bracket arranged corresponding to the second elastic body; When the first elastic body is used as a supporting body, the first connecting bracket is directly connected to the vehicle body; when the second elastic body is used as a supporting body, the suspension structure further includes a fixed bracket, and the second connecting bracket is connected to the vehicle body through the fixed bracket.

5. The suspension structure according to claim 4, characterized in that: The fixing bracket is detachably connected to the second connecting bracket.

6. The suspension structure according to claim 5, characterized in that: A threaded hole is arranged on one end of the fixing bracket for connecting with the second connecting bracket, and a light hole is arranged on the second connecting bracket. A fastener passes through the light hole and is locked and connected with the threaded hole.

7. The suspension structure according to claim 5, characterized in that: The fixed bracket is provided with a limiting portion, and the limiting portion is used to connect the second connecting bracket to limit the relative rotation of the connecting bracket and the fixed bracket.

8. The suspension structure according to claim 7, characterized in that: The limiting portion is configured as a limiting step, and the limiting step is provided at one end of the fixing bracket connected to the second connecting bracket, and the side edge of the second connecting bracket abuts against the limiting step.

9. A vehicle, characterized in that: The suspension structure comprises the suspension structure described in any one of claims 1 to 8.

10. A suspension installation method for installing the suspension structure according to claims 1 to 8, characterized in that: The suspension installation method comprises the following steps: Determine the stiffness requirements of the required suspension structure based on the vehicle's suspension system; connecting the mounting bracket to the engine; According to the stiffness requirement, one of the plurality of elastic bodies is selected as a supporting body and connected to the vehicle body.

11. The suspension installation method according to claim 10, characterized in that: The suspension installation method further comprises the following steps: determining whether a vibration absorber is required based on the design of the suspension system of the vehicle; Depending on whether a vibration absorber is required, if so, the elastic body between the support body and the vehicle body is in a free state; otherwise, the elastic body between the support body and the vehicle body is in a compressed state.

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