A flexible vibration isolation mounting bracket and a vehicle

Abstract

The utility model provides a kind of flexible vibration isolation mounting bracket and car, it is related to vehicle technical field.The flexible vibration isolation mounting bracket is used to connect fuel tank isolation valve and oil tank, comprising: valve installation part, oil tank connecting part and multiple flexible connecting parts;Valve installation part is used to install fuel tank isolation valve;Oil tank connecting part is used to connect oil tank;Flexible connecting part is arc, multiple flexible connecting parts are interval setting;One end of multiple flexible connecting parts is fixedly connected with valve installation part, and the other end of each flexible connecting part is fixedly connected with an oil tank connecting part respectively, to realize vibration isolation between valve installation part and oil tank connecting part by flexible connecting part.By setting multiple arc-shaped flexible connecting parts between valve installation part and oil tank connecting part, a transition structure with elastic deformation capability is constructed, which fundamentally changes the force transmission and vibration transmission mechanism of traditional rigid connection bracket.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a flexible vibration isolation mounting bracket and an automobile. Background Technology

[0002] In the continuous development of the modern automotive industry, the safety, reliability, and operational smoothness of the fuel system have become important indicators for evaluating the overall quality of a vehicle. The fuel tank isolation valve, as a key actuator in the evaporative emission control system (EVAP), primarily functions to control the flow between the fuel tank and the carbon canister, enabling the collection and purification of fuel vapors and preventing harmful gases from being directly released into the atmosphere, thus meeting increasingly stringent environmental regulations. However, in actual operation, the fuel tank isolation valve is typically driven by an electromagnetic coil, and its internal valve core generates high-frequency mechanical shocks and vibrations during opening and closing. If this vibration energy is not effectively isolated, it will be continuously transmitted to the fuel tank body through the rigid connection structure, potentially exciting the inherent modes of the fuel tank structure, causing resonance, exacerbating fatigue damage to the fuel tank wall, and shortening its service life. Especially when there is fuel sloshing within the fuel tank, the vibration and liquid-solid coupling become more complex, further amplifying structural stress. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to provide a flexible vibration isolation mounting bracket to block the transmission of vibration of the fuel tank isolation valve to the fuel tank body, thereby solving problems such as resonance and noise.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] In a first aspect, this utility model provides a flexible vibration isolation mounting bracket for connecting a fuel tank isolation valve and a fuel tank, comprising: a valve mounting part, a fuel tank connecting part, and multiple flexible connecting parts;

[0006] The valve mounting section is used to install the fuel tank isolation valve;

[0007] The fuel tank connection part is used to connect the fuel tank;

[0008] The flexible connecting part is arc-shaped, and multiple flexible connecting parts are spaced apart.

[0009] One end of each of the multiple flexible connecting parts is fixedly connected to the valve mounting part, and the other end of each flexible connecting part is fixedly connected to one of the oil tank connecting parts, so as to achieve vibration isolation between the valve mounting part and the oil tank connecting part through the flexible connecting parts.

[0010] Optionally, each of the flexible connecting parts is an integrally formed elastic structure, including a first connecting segment, a second connecting segment and a third connecting segment connected sequentially along the length direction;

[0011] The second connecting segment extends horizontally;

[0012] The first connecting segment and the third connecting segment extend outward and obliquely downward from both ends of the second connecting segment, so that the overall outline of the flexible connecting part is an inverted U-shape with both ends expanding outward, so as to provide elastic deformation capability.

[0013] Optionally, the transition region between the first connecting segment and the second connecting segment, and the transition region between the second connecting segment and the third connecting segment, are both provided with a reinforcing structure.

[0014] Optionally, the reinforcing structure is an embossed texture or a locally thickened area.

[0015] Optionally, a plurality of the flexible connections are arranged at intervals along a first direction, wherein the spacing between at least one pair of adjacent flexible connections is configured to be greater than the spacing between other adjacent flexible connections, so as to form a clearance space for avoiding the fuel tank isolation valve within the spacing area.

[0016] Optionally, the mounting surface of the valve mounting part for mounting the fuel tank isolation valve is perpendicular to the connecting surface of the fuel tank connecting part for connecting the fuel tank.

[0017] Optionally, a local reinforcement structure is provided on the valve mounting portion, in the area near the flexible connection portion.

[0018] In a second aspect, a car is provided, comprising: a fuel tank isolation valve, a fuel tank, and a flexible vibration isolation mounting bracket as described in the above technical solution;

[0019] The fuel tank connection part is fixedly connected to the mounting interface on the fuel tank;

[0020] The valve mounting part is fixedly connected to the mounting base of the fuel tank isolation valve;

[0021] The top of the fuel tank isolation valve extends from the clearance space formed between two adjacent flexible connections.

[0022] Optionally, it also includes: a first flexible damping element and a metal connector;

[0023] The first flexible damping element is provided with a through hole extending along the axial direction;

[0024] The metal connector has a plug-in hole in the middle;

[0025] The first flexible shock absorber is used to be inserted into the mounting interface of the oil tank and is fixed thereto by interference fit or snap-fit.

[0026] The metal connector is inserted into the through hole of the first flexible shock absorber;

[0027] Fasteners pass sequentially through the insertion holes of the metal connector and the mounting holes on the valve mounting part to fix the flexible vibration isolation mounting bracket to the oil tank.

[0028] Optionally, it may also include a second flexible damping element;

[0029] The second flexible damping element is provided with a through hole extending along the axial direction;

[0030] The second flexible shock absorber is used to insert into the mounting hole on the mounting seat of the fuel tank isolation valve and to be fixed therewith by interference fit or snap-fit.

[0031] Fasteners are passed sequentially through the through hole of the second flexible damper and the mounting hole on the mounting seat of the fuel tank isolation valve to install the fuel tank isolation valve onto the flexible vibration isolation mounting bracket.

[0032] The technical solution provided by this utility model has the following technical effects:

[0033] The flexible vibration isolation mounting bracket constructs a transition structure with elastic deformation capabilities by setting multiple arc-shaped flexible connections between the valve mounting section and the fuel tank connection section, fundamentally changing the force and vibration transmission mechanism of traditional rigid connection brackets. When the fuel tank isolation valve generates high-frequency vibrations due to electromagnetic drive or fluid impact during operation, the vibration energy is transmitted to the flexible connections through the valve mounting section. The latter, with its arc-shaped geometry endowed with bending and tensile deformation capabilities, can effectively absorb and dissipate vibration energy, significantly weakening the intensity of vibration transmission to the fuel tank connection section, thereby achieving effective vibration isolation of the fuel tank body. This structural vibration reduction design not only avoids the direct transmission of vibration to the fuel tank through the rigid metal contact surface, preventing the fuel tank from developing fatigue cracks or sealing failure due to continuous vibration, but also suppresses the resonance response of the fuel tank structure at specific frequencies, improving the structural durability and operational safety of the fuel system. Attached Figure Description

[0034] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0035] Figure 1 This is a first-view structural schematic diagram of a flexible vibration isolation mounting bracket provided in an embodiment of this utility model;

[0036] Figure 2This is a second-view structural schematic diagram of a flexible vibration isolation mounting bracket provided in an embodiment of this utility model;

[0037] Figure 3 This is a partial structural diagram of a car provided in an embodiment of the present utility model;

[0038] Figure 4 This is a partial cross-sectional view of a flexible vibration isolation mounting bracket provided in this embodiment of the present invention after being connected to the fuel tank isolation valve and the fuel tank.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Valve mounting part; 2. Fuel tank connection part; 3. Flexible connection part; 4. Reinforcing structure; 5. Clearance space; 6. Locally reinforced structure; 7. Fuel tank isolation valve; 8. Fuel tank; 9. First flexible damping component; 10. Metal connector; 11. Second flexible damping component.

[0041] 31. First connecting segment, 32. Second connecting segment, 3. Third connecting segment. Detailed Implementation

[0042] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0043] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0044] Figure 1 This is a first-view structural schematic diagram of a flexible vibration isolation mounting bracket provided in an embodiment of this utility model; Figure 2 This is a second-view structural schematic diagram of a flexible vibration isolation mounting bracket provided in an embodiment of this utility model; Figure 3 This is a partial structural diagram of a car provided in an embodiment of the present utility model; Figure 4 This is a partial cross-sectional view of a flexible vibration isolation mounting bracket provided in an embodiment of this utility model, after being connected to a fuel tank isolation valve and a fuel tank. The above schematic diagram is only for illustrating the structural relationships related to the utility model and is not intended to represent the actual scale of the product.

[0045] Example 1

[0046] like Figure 1 and Figure 2 As shown in this embodiment, a flexible vibration isolation mounting bracket is used to connect a fuel tank isolation valve 7 and a fuel tank 8. It includes: a valve mounting part 1, a fuel tank connecting part 2, and multiple flexible connecting parts 3. The valve mounting part 1 is used to mount the fuel tank isolation valve 7; the fuel tank connecting part 2 is used to connect the fuel tank 8; the flexible connecting parts 3 are arc-shaped, and multiple flexible connecting parts 3 are spaced apart; one end of each flexible connecting part 3 is fixedly connected to the valve mounting part 1, and the other end of each flexible connecting part 3 is fixedly connected to a fuel tank connecting part 2, so as to achieve vibration isolation between the valve mounting part 1 and the fuel tank connecting part 2 through the flexible connecting parts 3.

[0047] In this embodiment, a flexible vibration isolation mounting bracket is provided. This bracket is specifically designed to connect the fuel tank isolation valve 7 and the fuel tank 8, aiming to effectively isolate the vibration of the fuel tank isolation valve 7 during operation from being transmitted to the fuel tank 8. This reduces potential safety hazards such as wear, seal failure, loose connections, and even fuel leakage caused by vibration. This flexible vibration isolation mounting bracket not only possesses good structural stability and load-bearing capacity, but also achieves efficient vibration reduction and dynamic response adaptability under complex operating conditions through its unique flexible connection structure design, significantly improving the overall reliability and service life of the fuel system.

[0048] Specifically, the flexible vibration isolation mounting bracket comprises three main functional areas: a valve mounting section 1, a fuel tank connection section 2, and multiple flexible connection sections 3. The valve mounting section 1 primarily provides a stable, precise, and easy-to-assemble mounting platform for the fuel tank isolation valve 7. This section features mounting holes, locating pin holes, and necessary sealing surfaces that match the fuel tank isolation valve 7, ensuring the valve body is fixed to the bracket in the correct orientation and maintains positional stability during long-term operation. The fuel tank connection section 2 achieves a reliable connection to the fuel tank 8 body, typically secured to the outer wall of the fuel tank 8 using bolts, clips, or welding. This firmly integrates the entire bracket system onto the fuel tank 8 structure, ensuring no relative displacement or loosening occurs during vehicle operation.

[0049] Between the two rigid functional components mentioned above, multiple flexible connecting parts 3 arranged in an arc shape are provided. These flexible connecting parts 3 are the key structures for realizing the vibration isolation function. The multiple flexible connecting parts 3 are spaced apart along a specific direction, with one end of each fixedly connected to the valve mounting part 1, and the other end fixedly connected to the corresponding fuel tank connecting part 2, thus forming multiple parallel elastic support paths between the valve mounting part 1 and the fuel tank connecting part 2. When the fuel tank isolation valve 7 vibrates and is transmitted to the fuel tank 8 through the support system, the flexible connecting parts 3 absorb and dissipate the vibration energy through their own elastic deformation capacity, preventing or significantly weakening the transmission of vibration to the fuel tank 8, ultimately achieving effective protection for both the fuel tank isolation valve 7 and the fuel tank 8.

[0050] Furthermore, each flexible connection 3 adopts an integrally molded elastic structure design, and is made of a metal material with good elasticity and fatigue strength (such as stainless steel, spring steel, or aluminum alloy) through stamping, bending, or precision casting processes to ensure structural consistency and durability. Geometrically, the flexible connection 3 includes a first connecting segment 31, a second connecting segment 32, and a third connecting segment 33 connected sequentially along its length. The second connecting segment 32 extends horizontally, forming the middle support segment of the flexible connection 3; while the first connecting segment 31 and the third connecting segment 33 extend outwards and diagonally downwards from both ends of the second connecting segment 32, forming an inverted U-shaped spatial profile with outward expansion at both ends. This inverted U-shaped structure can produce significant bending deformation and minor tensile / compressive deformation when subjected to vertical or lateral loads, thereby endowing the flexible connection 3 with excellent elastic recovery capability and multi-directional vibration damping performance. It is particularly noteworthy that, since the first connecting section 31 and the third connecting section 33 are arranged obliquely downward and outward, the entire flexible connecting part 3 can achieve a gradual change in stiffness through geometric nonlinear effects when subjected to force. That is, it exhibits a softer, lower stiffness response under small amplitude vibration, while gradually hardening under large impact loads, thus avoiding excessive deformation and balancing comfort and safety.

[0051] To further enhance the structural reliability of the flexible connection 3 under long-term dynamic loads, reinforcing structures 4 are provided in the transition areas between the first connecting section 31 and the second connecting section 32, and between the second connecting section 32 and the third connecting section 33. These transition areas are typically the locations with the most severe stress concentration, and are prone to fatigue cracks under repeated vibration loads. Therefore, introducing reinforcing structures 4 can effectively improve the local stress distribution and extend the service life. The reinforcing structure 4 can be implemented by creating raised or recessed patterns on the surface of the flexible connection 3 using a die-imprinting process, such as wavy, diamond, or grid-like patterns. These patterns not only increase the local thickness and stiffness of the material but also alter the stress propagation path by introducing microscopic geometric discontinuities, thus inhibiting crack initiation. Another optional reinforcement method is to perform local thickening treatment in the transition areas, such as through multi-layer stacking, local thickening stamping, or laser cladding, making the material thickness in this area significantly greater than other parts of the flexible connection 3, thereby improving its fatigue resistance.

[0052] Furthermore, considering the specific dimensions and installation space requirements of the fuel tank isolation valve 7, this embodiment optimizes the layout of the flexible connection parts 3. Specifically, multiple flexible connection parts 3 are arranged at intervals along a first direction (e.g., the transverse or longitudinal direction of the bracket), wherein the spacing between at least one pair of adjacent flexible connection parts 3 is specifically configured to be greater than the spacing between other adjacent flexible connection parts 3. This expanded spacing area constitutes a clearance space 5 specifically designed to avoid the top of the fuel tank isolation valve 7, ensuring that the protruding part of the valve body does not interfere with the bracket structure in the installed state, thus guaranteeing the feasibility of assembly and the convenience of maintenance.

[0053] In one specific embodiment, there are three flexible connecting parts 3, named the first flexible connecting part 3, the second flexible connecting part 3, and the third flexible connecting part 3. The first and third flexible connecting parts 3 are structurally symmetrically arranged with the same width to ensure mechanical balance of the supports on both sides. The second flexible connecting part 3 is located between the two and is relatively narrow, which not only helps to reduce the overall weight but also adjusts the stiffness distribution in the central area to some extent. More importantly, the distance between the second and third flexible connecting parts 3 is designed to be significantly greater than the distance between the first and second flexible connecting parts 3, thus forming a spacious clearance space 5 between the second and third flexible connecting parts 3, specifically for accommodating the top of the fuel tank isolation valve 7. This asymmetrical layout maximizes space utilization while meeting structural strength and vibration reduction requirements, demonstrating a high degree of integration between structural design and functional needs.

[0054] In terms of spatial orientation design, the valve mounting part 1 in this embodiment is used to mount the fuel tank isolation valve 7, and is perpendicular to the fuel tank connecting part 2 used to connect the fuel tank 8. This vertical arrangement makes the entire flexible vibration isolation mounting bracket present a horizontally placed L-shaped profile in the side view. The two vertically arranged mounting surfaces are flexibly connected by the flexible connecting part 3, which ensures both installation accuracy and effective isolation of the vibration path.

[0055] To further enhance the structural strength of critical connection areas, local reinforcement structures 6 are installed on the valve mounting section 1, especially in the connection transition area near the flexible connection section 3. These local reinforcement structures 6 can take the form of thickened stiffeners, annular bosses, flanged structures, or embedded metal bushings, etc., to disperse concentrated stress from the flexible connection section 3 and prevent deformation or cracking of the valve mounting section 1 under long-term vibration loads. Similarly, a similar reinforcement structure 4 is installed in the connection transition area between the flexible connection section 3 and the oil tank connection section 2 to ensure that the connection node maintains sufficient structural integrity and fatigue life when subjected to complex loads (including tension, compression, bending, and shear). These reinforcement measures together constitute a multi-layered, comprehensive structural reinforcement system, significantly improving the reliability and durability of the entire support system.

[0056] In addition to the specific embodiments described above, this utility model can be extended to many other feasible implementation schemes. For example, the number of flexible connection parts 3 can be flexibly adjusted according to the actual load size and vibration reduction requirements, and can be designed as two, four or even more, forming a multi-point support network to further improve the stability and redundancy of the system. The geometry of the flexible connection parts 3 can also be diversified. In addition to the inverted U-shape, S-shaped, Z-shaped, spiral or corrugated tubular structures can also be adopted to adapt to different installation spaces and vibration frequency characteristics. In terms of materials, in addition to metal materials, high-performance engineering plastics or composite materials (such as carbon fiber reinforced polymers) can also be used to achieve the goal of lightweighting while ensuring sufficient strength. In addition, damping materials (such as rubber coatings, viscoelastic layers) can be integrated into the interior or surface of the flexible connection parts 3 to further improve the energy dissipation capacity and achieve active vibration reduction effect.

[0057] In summary, the flexible vibration isolation mounting bracket provided by this utility model integrates multiple functions such as valve installation, fuel tank connection, vibration isolation, space avoidance, and structural reinforcement through a scientific and reasonable structural design. It not only solves the vibration transmission problem caused by traditional rigid connections, but also takes into account the ease of installation, structural reliability, and spatial adaptability. It is suitable for various automobiles, construction machinery, ships, and other equipment equipped with fuel systems, and has broad application prospects and promotional value.

[0058] Example 2

[0059] like Figure 3 and Figure 4 As shown, this embodiment provides a vehicle equipped with advanced vibration control technology. This vehicle not only integrates conventional powertrain, transmission, suspension, and fuel supply systems, but also features innovative optimizations in the structural integration and vibration management of the fuel system. Specifically, the vehicle includes a fuel tank isolation valve 7, a fuel tank 8, and a flexible vibration isolation mounting bracket as described in Embodiment 1. This flexible vibration isolation mounting bracket, as a key transitional structure connecting the fuel tank isolation valve 7 and the fuel tank 8, performs multiple functions including mechanical connection, spatial positioning, and vibration isolation. The introduction of this bracket effectively blocks the high-frequency mechanical vibration generated during the operation of the fuel tank isolation valve 7 from reaching the fuel tank 8 body, thereby avoiding resonance, structural fatigue, sealing failure, and potential fuel leakage risks caused by the propagation of vibration energy within the fuel tank 8 structure. This significantly improves the operational safety, durability, and ride comfort of the entire vehicle's fuel system.

[0060] The fuel tank connection part 2 is fixedly connected to the mounting interface on the fuel tank 8; the valve mounting part 1 is fixedly connected to the mounting seat of the fuel tank isolation valve 7; the top of the fuel tank isolation valve 7 extends out from the clearance space 5 formed between two adjacent flexible connection parts 3.

[0061] In the specific assembly structure of this automobile, the fuel tank connection part 2 of the flexible vibration isolation mounting bracket is securely connected to the mounting interface on the fuel tank 8 via a fixed connection. Specifically, the fuel tank connection part 2 is composed of multiple metal mounting plates with sufficient rigidity and deformation resistance. These mounting plates have multiple precisely arranged bolt holes for alignment with corresponding bolt holes on the outer wall of the fuel tank 8. The fuel tank 8 body is designed with a standardized mounting interface area, which has threaded holes or through holes corresponding one-to-one with the bolt holes on the mounting plate. During assembly, high-strength bolts or screws are passed through the bolt holes on the mounting plate and screwed into the threaded holes of the mounting interface on the fuel tank 8, thereby firmly fixing the fuel tank connection part 2 to the fuel tank 8. This bolted connection method not only has high connection strength and shear resistance but also facilitates disassembly and maintenance, making it suitable for mass automated assembly processes.

[0062] Meanwhile, the valve mounting section 1 of the flexible vibration isolation mounting bracket is reliably connected to the mounting seat of the fuel tank isolation valve 7 via another set of fastening structures. The valve mounting section 1 also employs a metal mounting plate structure, with an array of bolt holes matching the mounting seat of the fuel tank isolation valve 7. The bottom of the fuel tank isolation valve 7 has a dedicated mounting seat, typically made of cast aluminum or high-strength plastic, providing good dimensional stability and load-bearing capacity. During assembly, appropriate fasteners (such as hexagonal screws, self-tapping screws, or snap-fit ​​structures) are sequentially passed through the bolt holes on the mounting plate of the valve mounting section 1 and the corresponding mounting holes on the mounting seat of the fuel tank isolation valve 7, ultimately securing the fuel tank isolation valve 7 firmly to the flexible vibration isolation mounting bracket. This double-end fixing structure ensures that the entire system will not loosen or shift due to bumps, acceleration, or braking during vehicle operation.

[0063] Crucially, the top structure of the fuel tank isolation valve 7 (e.g., electrical connector, pressure relief valve, vent pipe connector, or manual operating knob) protrudes from the clearance space 5 formed between two adjacent flexible connections 3. This clearance space 5 is a direct result of the asymmetrical layout design of the flexible connections 3. As mentioned earlier, when there are three flexible connections 3, the distance between the second and third flexible connections 3 is significantly increased, thus creating a spacious clearance area between them. The size and shape of this area are precisely calculated to ensure that all protruding components on the top of the fuel tank isolation valve 7 can be fully accommodated, avoiding mechanical interference during installation or operation. This space clearance design not only ensures the feasibility of assembly but also provides ample operating space for subsequent electrical connections, functional testing, and maintenance, greatly improving the maintainability and engineering practicality of the system.

[0064] In one embodiment, the system further includes a first flexible damping member 9 and a metal connector 10; the first flexible damping member 9 has a through hole extending axially; the metal connector 10 has a plug hole in the middle; the first flexible damping member 9 is used to insert into the mounting interface of the oil tank 8 and is fixed thereto by interference fit or snap-fit; the metal connector 10 is inserted into the through hole of the first flexible damping member 9; fasteners pass through the plug hole of the metal connector 10 and the mounting hole on the valve mounting part 1 in sequence to fix the flexible vibration isolation mounting bracket to the oil tank 8.

[0065] To further improve the vibration isolation performance of the entire vehicle, this embodiment introduces a composite connection scheme of a first flexible damping component 9 and a metal connector 10 on top of the aforementioned basic structure. This scheme aims to establish an additional elastic transition layer between the flexible vibration isolation mounting bracket and the fuel tank 8, thereby achieving a dual vibration damping effect. Specifically, the first flexible damping component 9 is a functional component made of a high-damping elastic material (such as rubber, silicone, or thermoplastic elastomer TPE). Its axial cross-sectional view presents an overall "I"-shaped structure, including a central snap-fit ​​section and two end flanges. The central snap-fit ​​section of this "I"-shaped structure is designed to be inserted into the mounting interface (i.e., the pre-reserved bolt hole) on the fuel tank 8, and is circumferentially fixed through interference fit or elastic snap-fit. Since the diameters of the two end flanges of the "I"-shaped structure are larger than the diameter of the mounting interface hole, they form a limit in the axial direction, preventing the first flexible damping component 9 from falling off.

[0066] The metal connector 10 is a high-strength metal component with good thermal and electrical conductivity, typically made of stainless steel or aluminum alloy. Its axial cross-sectional view shows an overall T-shaped structure, including a vertical insertion rod and a horizontal head platform. The insertion rod of the metal connector 10 is inserted into the through-hole of the first flexible damper 9, forming a tight fit to ensure reliable force transmission. Subsequently, fasteners (such as bolts or screws) pass sequentially through the insertion hole at the top of the metal connector 10 and the mounting hole of the oil tank connection 2 on the flexible vibration isolation mounting bracket, and are finally tightened and fixed. Through this structure, there is no longer a direct rigid metal-to-metal contact between the flexible vibration isolation mounting bracket and the oil tank 8; instead, a completely elastic connection is achieved through the first flexible damper 9. This design not only effectively attenuates mid-to-high frequency vibrations but also compensates for minor displacements caused by thermal expansion and contraction or manufacturing tolerances, further enhancing the system's dynamic adaptability and long-term stability.

[0067] It also includes a second flexible damping member 11; the second flexible damping member 11 is provided with a through hole extending along the axial direction; the second flexible damping member 11 is used to insert into the mounting hole on the mounting seat of the fuel tank isolation valve 7 and to press-fit or snap-fit ​​it in place; fasteners pass through the through hole of the second flexible damping member 11 and the mounting hole on the mounting seat of the fuel tank isolation valve 7 in sequence, so as to install the fuel tank isolation valve 7 onto the flexible vibration isolation mounting bracket.

[0068] Similarly, to achieve a flexible connection between the fuel tank isolation valve 7 and the flexible vibration isolation mounting bracket, this embodiment also introduces a second flexible damping element 11. This second flexible damping element 11 is also made of a high-damping elastic material, and its axial cross-sectional view also presents an "I" shape. Its central snap-fit ​​section is used to insert into the mounting hole on the fuel tank isolation valve 7 mounting seat, and is fixed by interference fit or elastic snap-fit. Its axially penetrating through-hole is used to accommodate fasteners. During assembly, the fasteners pass sequentially through the through-hole of the second flexible damping element 11 and the mounting hole on the fuel tank isolation valve 7 mounting seat, and engage with the threaded hole on the valve mounting part 1 to complete the final locking. Through this structure, an elastic transition is also formed between the fuel tank isolation valve 7 and the flexible vibration isolation mounting bracket, avoiding stress concentration and fretting wear problems caused by rigid connections.

[0069] The aforementioned dual flexible connection structure (i.e., the flexible vibration isolation mounting bracket is connected to the fuel tank 8 via the first flexible damping element 9, and the flexible vibration isolation mounting bracket is connected to the fuel tank isolation valve 7 via the second flexible damping element 11) constitutes a complete three-stage vibration reduction system: the first stage is the structural elastic deformation of the flexible connection part 3, the second stage is the material damping energy dissipation of the first flexible damping element 9, and the third stage is the interface vibration reduction of the second flexible damping element 11. These three-stage vibration reduction mechanisms work synergistically to effectively cover a wide frequency band of vibration energy, from low frequencies (such as engine idling vibration) to high frequencies (such as solenoid valve switching impact), achieving efficient vibration control under all operating conditions.

[0070] Furthermore, this embodiment can be extended to various other feasible implementation schemes. For example, the materials of the first flexible damper 9 and the second flexible damper 11 can be rubber formulations with different hardness to adapt to vibration characteristics in different directions; their "I"-shaped structure can also be replaced with an "H"-shaped, "cross"-shaped, or columnar structure with annular protrusions to enhance the axial and radial fixing effect. The T-shaped structure of the metal connector 10 can also be optimized into a threaded columnar member or a sleeve structure with a flange to adapt to different fastening methods. Under extreme operating conditions, temperature sensors or strain gauges can also be integrated into the flexible connection part 3 or inside the damper to achieve real-time monitoring of vibration status and fault early warning, moving towards intelligent fuel system management.

[0071] In summary, the vehicle provided in this embodiment, by introducing a flexible vibration isolation mounting bracket and a matching dual flexible damping connection system, constructs a highly integrated, highly reliable fuel system mounting architecture with excellent vibration reduction performance. This architecture not only solves the vibration transmission problem caused by traditional rigid connections, but also achieves a comprehensive improvement in structural safety, functional completeness, and user experience through multi-layered elastic design. It is suitable for various passenger cars, commercial vehicles, new energy hybrid vehicles, and special engineering vehicles, and has extremely high technological advancement and market application value.

[0072] During the manufacturing process, all fasteners used to connect the fuel tank isolation valve 7 and the fuel tank 8 are pre-integrated into the flexible vibration isolation mounting bracket. Specifically, multiple bolts, studs, or rivets are pre-fixed to their respective positions on the flexible vibration isolation mounting bracket through welding, press-fitting, or integral molding. This design significantly improves the engineering practicality and assembly efficiency of the mounting bracket, making it particularly suitable for the highly automated assembly line environments in modern automobile manufacturing.

[0073] Specifically, multiple studs or bolts for fixed connection with the fuel tank 8 are pre-welded onto the metal mounting plate of the fuel tank connection part 2. These studs are precisely arranged on the mounting plate to ensure accurate insertion into the pre-drilled mounting interfaces (such as threaded holes or through holes) on the fuel tank 8 body during assembly. Since the studs are pre-welded and fixed to the bracket, assembly workers or automated robotic arms only need to align the entire flexible vibration isolation mounting bracket with the mounting position on the fuel tank 8 during installation, and then complete the connection by tightening the nut or directly screwing it into the threaded hole. There is no need for additional hand-held and positioning bolts, which greatly simplifies the assembly process, avoids the risk of bolts falling off, being misinstalled, or missing, and improves assembly speed and consistency.

[0074] Similarly, multiple threaded fasteners, such as weld nuts or studs, for mounting the fuel tank isolation valve 7 are pre-welded or pressed into the mounting plate of the valve mounting section 1. The positions of these fasteners precisely match the mounting holes on the fuel tank isolation valve 7 mounting base. During actual assembly, simply align the mounting base of the fuel tank isolation valve 7 with the valve mounting section 1, insert the pre-placed studs or weld nuts into the mounting holes, and then tighten the matching bolts using an electric screwdriver or torque gun, or directly screw in the screws to quickly fix the valve body. This "pre-placed fastener" design not only reduces the types and quantities of parts required at the assembly station and lowers the complexity of material management, but also ensures that the tightening torque at each connection point is controllable and consistent, improving the reliability and quality stability of the connection.

[0075] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0076] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0077] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible vibration isolation mounting bracket for connecting a fuel tank isolation valve (7) and a fuel tank (8), characterized in that, include: Valve mounting part (1), oil tank connection part (2), and multiple flexible connection parts (3); The valve mounting part (1) is used to install the fuel tank isolation valve (7); The oil tank connecting part (2) is used to connect the oil tank (8); The flexible connecting part (3) is arc-shaped, and multiple flexible connecting parts (3) are spaced apart; One end of each of the multiple flexible connecting parts (3) is fixedly connected to the valve mounting part (1), and the other end of each of the flexible connecting parts (3) is fixedly connected to one of the oil tank connecting parts (2) so as to achieve vibration isolation between the valve mounting part (1) and the oil tank connecting part (2) through the flexible connecting parts (3).

2. The flexible vibration isolation mounting bracket according to claim 1, characterized in that, Each of the flexible connecting parts (3) is an integrally formed elastic structure, including a first connecting segment (31), a second connecting segment (32) and a third connecting segment (33) connected sequentially along the length direction; The second connecting segment (32) extends horizontally; The first connecting segment (31) and the third connecting segment (33) extend outward and obliquely downward from both ends of the second connecting segment (32), so that the overall outline of the flexible connecting part (3) is an inverted U-shape with both ends expanding outward, so as to provide elastic deformation capability.

3. The flexible vibration isolation mounting bracket according to claim 2, characterized in that, The transition area between the first connecting segment (31) and the second connecting segment (32), and the transition area between the second connecting segment (32) and the third connecting segment (33) are both provided with a reinforcing structure (4).

4. The flexible vibration isolation mounting bracket according to claim 3, characterized in that, The reinforcing structure (4) is an embossed texture or a locally thickened area.

5. A flexible vibration isolation mounting bracket according to claim 1, characterized in that, The plurality of the flexible connecting portions (3) are arranged at intervals along a first direction, wherein the spacing between at least one pair of adjacent flexible connecting portions (3) is configured to be greater than the spacing between other adjacent flexible connecting portions (3) to form a clearance space (5) for avoiding the fuel tank isolation valve (7) in the spacing area.

6. A flexible vibration isolation mounting bracket according to claim 1, characterized in that, The mounting surface of the valve mounting part (1) for mounting the fuel tank isolation valve (7) is perpendicular to the mounting surface of the fuel tank connecting part (2) for connecting the fuel tank (8).

7. A flexible vibration isolation mounting bracket according to claim 1, characterized in that, A local reinforcement structure (6) is provided on the valve mounting part (1) and in the area near the flexible connection part (3).

8. A car, characterized in that, include: Fuel tank isolation valve (7), fuel tank (8), and flexible vibration isolation mounting bracket as described in any one of claims 1 to 7; The oil tank connection part (2) is fixedly connected to the mounting interface on the oil tank (8); The valve mounting part (1) is fixedly connected to the mounting seat of the fuel tank isolation valve (7); The top of the fuel tank isolation valve (7) extends from the clearance space (5) formed between two adjacent flexible connections (3).

9. A car according to claim 8, characterized in that, Also includes: The first flexible damping component (9) and the metal connector (10); The first flexible damping member (9) is provided with a through hole extending along the axial direction; The metal connector (10) has a plug hole in the middle; The first flexible shock absorber (9) is used to be inserted into the mounting interface of the oil tank (8) and is fixed thereto by interference fit or snap-fit. The metal connector (10) is inserted into the through hole of the first flexible shock absorber (9); Fasteners pass sequentially through the insertion holes of the metal connector (10) and the mounting holes on the valve mounting part (1) to fix the flexible vibration isolation mounting bracket to the oil tank (8).

10. A car according to claim 8, characterized in that, It also includes a second flexible damping element (11); The second flexible damping member (11) is provided with a through hole extending along the axial direction; The second flexible shock absorber (11) is used to insert into the mounting hole on the mounting seat of the fuel tank isolation valve (7) and to be press-fitted or snap-fitted to it. Fasteners pass sequentially through the through hole of the second flexible damper (11) and the mounting hole on the mounting seat of the fuel tank isolation valve (7) to install the fuel tank isolation valve (7) onto the flexible vibration isolation mounting bracket.

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