A new energy automobile body frame connection vibration isolation bushing weight reduction structure

Abstract

The utility model provides a new energy automobile vehicle body frame connection vibration isolation bushing weight reduction structure belongs to the technical field of automobile parts, to solve the problem that the bushing vibration isolation performance of commonly used at the connecting place of automobile sub -frame and vehicle body is not good, is easy to loosen and falls off, and the service life is not good, including the outer skeleton, inner framework and interlayer, the inner framework is arranged in the outer skeleton, and the interlayer is clamped between the outer skeleton and the inner framework, the sub -sleeve is still clamped between the interlayer and the inner framework, and the interlayer is formed with the sub -sleeve between the interlayer and the inner framework and is adhered to the heterotopic surface, the recess and the convex cooperation are set up between the outer skeleton and the interlayer, and the mounting hole of the frame connecting rod is set up in the middle part of the inner framework.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and more specifically, it relates to a weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle. Background Technology

[0002] The new energy vehicle industry is increasingly demanding lightweight and vibration isolation performance from its components. Vibration isolation components at the connection between the vehicle subframe and the body are crucial for the vehicle's ride comfort, stability, and energy consumption. Currently, most commonly used vibration isolation components at this connection are made of a single material, such as pure rubber bushings or metal bushings. While pure rubber bushings offer some vibration isolation, their structural strength is insufficient, leading to aging and deformation over long-term use. Furthermore, their significant weight hinders weight reduction and range improvement in new energy vehicles. Metal bushings, while strong, have poor vibration isolation performance and cannot effectively filter vibrations generated during driving, impacting the driving experience. In addition, some composite material vibration isolation components suffer from poor material compatibility and unreasonable connection structures, making them prone to loosening and detachment under long-term vibration, reducing their lifespan and reliability.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle, in order to achieve a more practical value. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a weight-reducing structure for vibration isolation bushings connecting the body and frame of a new energy vehicle, thereby solving the problems of poor vibration isolation performance, easy loosening and detachment, and short service life of commonly used bushings at the connection between the vehicle subframe and the body.

[0005] The purpose and effect of this utility model, a weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle, are achieved by the following specific technical means:

[0006] A weight reduction structure for vibration isolation bushings connecting the body frame of a new energy vehicle includes an outer frame, an inner frame, and a sandwich layer. The inner frame is disposed inside the outer frame, and the sandwich layer is disposed between the outer frame and the inner frame. A secondary sleeve is also disposed between the sandwich layer and the inner frame, and the secondary sleeve and the sandwich layer form an off-center surface fit. Corresponding grooves and protrusions are provided between the outer frame and the sandwich layer for matching. The middle of the inner frame is provided with an installation hole for a frame connecting rod to pass through.

[0007] Furthermore, both ends of the interlayer are provided with annular deformation grooves.

[0008] Furthermore, the top of the outer frame extends outward with a flange, and the top of the interlayer is provided with a cover portion that is fastened to the flange.

[0009] Furthermore, the inner wall of the mounting hole of the inner frame is provided with limiting grooves on both sides, the top of the inner frame is provided with a limiting cover plate, and the bottom of the limiting cover plate is provided with two mounting arms that are engaged in the corresponding limiting grooves.

[0010] Furthermore, the bottom of the interlayer is provided with multiple protrusions, which extend out of the bottom of the inner skeleton and the outer skeleton, and the inner wall of the protrusions forms wavy folds.

[0011] Furthermore, both the sub-sleeve and the outer frame are made of plastic, the interlayer is made of rubber, and the inner frame is made of metal.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. When the car vibrates during driving, the inner frame and sandwich layer in the inner layer first absorb some of the vibration energy, provide structural support, and prevent excessive deformation of the inner layer; while the sandwich buffer frame reinforcing ribs and limiting cover plates further buffer the vibration impact and disperse stress distribution; the outer frame plays a protective role, preventing external impurities from entering and internal structure from being damaged.

[0014] 2. The interlayer and the secondary sleeve work together to buffer and filter vibrations of different frequencies. The mixed material inner layer improves the anti-aging and anti-deformation capabilities, while reducing the overall weight. Attached Figure Description

[0015] Figure 1 This is a perspective view of a weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle, according to this utility model.

[0016] Figure 2 This is a cross-sectional view of a weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle, according to this utility model.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0018] 1. Outer frame; 2. Limiting cover plate; 3. Inner frame; 4. Sub-sleeve; 5. Interlayer; 101. Flanged edge; 301. Mounting hole; 302. Limiting groove; 303. Cavity; 501. Deformation groove; 502. Cover part; 503. Protrusion. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example:

[0023] As attached Figure 1 To be continued Figure 2 As shown:

[0024] This utility model provides a weight reduction structure for vibration isolation bushings connecting the body frame of a new energy vehicle, including an outer frame 1, an inner frame 3, and a sandwich layer 5. The inner frame 3 is installed inside the outer frame 1, and the sandwich layer 5 is sandwiched between the outer frame 1 and the inner frame 3. A secondary sleeve 4 is also sandwiched between the sandwich layer 5 and the inner frame 3. The secondary sleeve 4 and the sandwich layer 5 form an off-center surface fit, so that when a single component generates a vertical force, they will squeeze each other. Moreover, the sandwich layer 5 is made of rubber, which takes into account both structural strength and vibration isolation performance.

[0025] The outer frame 1 and the interlayer 5 are provided with corresponding grooves and protrusions to make the fit between the outer frame 1 and the interlayer 5 tighter and reduce loosening. The inner frame 3 is provided with a mounting hole 301 for the frame connecting rod to pass through in the middle, and a cavity 303 is opened on the inner frame 3 to reduce the weight of the inner frame 3 and improve the structural strength.

[0026] Meanwhile, the inner frame 3 has limit grooves 302 on both sides of the inner wall of the mounting hole 301, and the inner frame 3 has a limit cover plate 2 on the top. The bottom of the limit cover plate 2 has two mounting arms that are locked in the corresponding limit grooves 302. The limit cover plate 2 is assembled using an interference fit process to connect the vehicle body and the subframe.

[0027] When vibrations occur during vehicle operation, the inner frame 3 and the interlayer 5 work together to absorb some of the vibration energy, provide structural support, and prevent excessive deformation of the inner layer; while the interlayer 5 buffers the frame reinforcing ribs and limit cover 2 to further buffer the vibration impact and disperse stress distribution; the outer frame 1 plays a protective role to prevent external impurities from entering and damage to the internal structure.

[0028] Both the sub-sleeve 4 and the outer frame 1 are made of plastic, the interlayer 5 is made of rubber, and the inner frame 3 is made of metal. Through the synergistic effect of the mixed materials and the reasonable structural design, effective vibration filtering is achieved. At the same time, the lightweight material combination reduces the overall weight of the component, meeting the weight reduction requirements of new energy vehicles.

[0029] The interlayer 5 has annular deformation grooves 501 at both ends to absorb the deformation of the interlayer 5 when the car vibrates on uneven roadside. The top of the outer frame 1 extends outward with a flange 101. The top of the interlayer 5 has a cover part 502 that is fastened to the flange 101. When the car body moves downward with the limiting cover plate 2, the limiting cover plate 2 squeezes the cover part 502 for buffering. The interlayer 5 and the cover part 502 are made of rubber to reduce abnormal noise.

[0030] The bottom of the interlayer 5 is provided with multiple protrusions 503. The protrusions 503 extend out of the bottom of the inner frame 3 and the outer frame 1, and the inner wall of the protrusions 503 forms wavy folds. When the frame impacts the entire bushing, it first contacts the protrusions 503. While cushioning, the wavy folds provide a better sound absorption effect.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A weight-reducing structure for vibration isolation bushings connecting the body and frame of a new energy vehicle, characterized in that: It includes an outer frame (1), an inner frame (3) and a sandwich layer (5). The inner frame (3) is provided inside the outer frame (1), and the sandwich layer (5) is located between the outer frame (1) and the inner frame (3). A secondary sleeve (4) is also provided between the sandwich layer (5) and the inner frame (3). The secondary sleeve (4) and the sandwich layer (5) form an off-center surface fit. The outer frame (1) and the sandwich layer (5) are provided with corresponding grooves and protrusions. The inner frame (3) is provided with a mounting hole (301) for the frame connecting rod to pass through.

2. The weight reduction structure for vibration isolation bushings connecting the body frame of a new energy vehicle as described in claim 1, characterized in that: Both ends of the interlayer (5) are provided with annular deformation grooves (501).

3. The weight reduction structure for vibration isolation bushings connecting the body frame of a new energy vehicle as described in claim 1, characterized in that: The top of the outer frame (1) extends outward with a flange (101), and the top of the interlayer (5) is provided with a cover (502) that is fastened to the flange (101).

4. The weight reduction structure for vibration isolation bushings connecting the body frame of a new energy vehicle as described in claim 1, characterized in that: The inner frame (3) has a limiting groove (302) on both sides of the inner wall of the mounting hole (301). The inner frame (3) has a limiting cover plate (2) on the top. The limiting cover plate (2) has two mounting arms at the bottom that are locked in the corresponding limiting groove (302).

5. The weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle as described in claim 1, characterized in that: The bottom of the interlayer (5) is provided with a plurality of protrusions (503), the protrusions (503) extend out of the bottom of the inner skeleton (3) and the outer skeleton (1), and the inner wall of the protrusions (503) forms wavy folds.

6. The weight reduction structure for vibration isolation bushings connecting the body and frame of a new energy vehicle as described in claim 1, characterized in that: The sub-sleeve (4) and the outer frame (1) are both made of plastic, the interlayer (5) is made of rubber, and the inner frame (3) is made of metal.

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