A lightweight electric vehicle front stabilizer bar structure

Abstract

A lightweight electric vehicle front stabilizer bar structure includes a rod body, a ball shell, a ball seat, and a ball pin. The ball shell is made of plastic and includes a first end connected to the end of the rod body via injection molding and a second end with a hemispherical groove. The ball seat is hemispherical and interference-fitted into the groove, with a recess facing the groove opening. The ball pin's ball head is rotatably inserted into the recess. This design, by using a plastic ball shell, effectively reduces the overall weight of the stabilizer bar, achieving component lightweighting. Furthermore, the plastic ball shell also absorbs vibrations and improves vibration isolation, making the stabilizer bar's transmission more stable. In addition, the rod body, which mainly bears the load, remains metal to ensure structural strength, while the ball shell is connected to the rod body via injection molding, resulting in good connection stability and convenient processing, avoiding problems associated with welding.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive chassis parts, and more specifically to a lightweight electric vehicle front stabilizer bar structure. Background Technology

[0002] In the field of electric vehicles, lightweighting of various components to improve energy efficiency and vehicle dynamic performance has always been a key research focus in the industry.

[0003] A stabilizer bar, also known as a ball joint, is a key component in a vehicle's steering / suspension system, used to achieve multi-angle rotational connections between different structural elements. Traditional stabilizer bars / ball joints are made entirely of metal, and their main structure includes a bar body, ball joint sleeve, ball joint seat, and ball pin. The ball joint sleeve is welded to the end of the bar body, the ball joint seat is installed inside the ball joint sleeve, and the ball pin is rotatably connected to the ball joint seat, thus enabling power transmission.

[0004] However, such all-metal stabilizer bar structures are often quite heavy, which is not conducive to achieving the goal of lightweighting the whole vehicle. At the same time, in terms of manufacturing process, the traditional ball sleeve and the bar body are usually fixedly connected by welding. Welding process is not only complicated and requires high process control, but also requires a series of follow-up treatments such as slag removal, penetration testing and surface protection after welding. This results in complicated production processes, long processing cycles and high manufacturing costs. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing stabilizer bars, which are not only heavy but also require welding to fix the parts together, resulting in complicated production processes, long processing cycles, and high manufacturing costs.

[0006] To address the aforementioned issues, this utility model provides a lightweight electric vehicle front stabilizer bar structure, comprising a rod body, a ball shell, a ball seat, and a ball pin. The ball shell is made of plastic and includes a first end connected to the end of the rod body via injection molding and a second end with a hemispherical groove. The ball seat is hemispherical and is interference-fitted into the groove. The ball seat has a recess facing the groove opening, and the ball head of the ball pin is rotatably inserted into the recess.

[0007] Compared to existing technologies, the above solution improves the stabilizer bar structure by using a plastic spherical shell, which is integrally molded to the end of the bar body via injection molding. The plastic spherical shell effectively reduces the overall weight of the stabilizer bar, achieving component lightweighting. Furthermore, it absorbs vibrations and improves vibration isolation, resulting in more stable transmission of the stabilizer bar. In addition, the main load-bearing bar body remains made of metal to ensure structural strength. The spherical shell is connected to the bar body via injection molding, ensuring good connection stability and ease of processing, avoiding problems associated with welding. The ball seat is interference-fitted into the groove of the spherical shell, ensuring the stability of the connection between them.

[0008] In an improved embodiment, a dust cover is also included. The second end of the spherical shell has a raised annular buckle on the end face corresponding to the groove opening. The dust cover is fitted onto the buckle to seal the groove opening, thereby preventing external impurities from entering between the ball seat and the ball pin and affecting their rotational fit.

[0009] In an improved embodiment, the inner wall of the ball socket is provided with several circumferential grooves, which are filled with lubricating oil / grease, thereby making the rotation of the ball pin within the ball socket smoother.

[0010] In an improved version, the ball seat is made of the same material as the ball shell, thereby further reducing the overall weight of the stabilizer bar and improving the resonant modes of the component.

[0011] In an improved embodiment, the center of the groove bottom extends through a through hole to the outer wall of the spherical shell, and the corresponding position of the ball seat passes through the through hole and protrudes from the outer wall of the spherical shell, thereby giving the groove a certain deformation space, which is beneficial to a tighter fit between the groove and the ball seat.

[0012] In an improved embodiment, the outer wall of the first end of the spherical shell is provided with a perforated hole, thereby further reducing the overall weight of the stabilizer bar. Attached Figure Description

[0013] Figure 1 This is an overall schematic diagram of a lightweight front stabilizer bar structure for an electric vehicle. Figure 2 This is a top view schematic diagram of a lightweight front stabilizer bar structure for an electric vehicle. Figure 3 For along Figure 2 Cross-sectional view of section AA in the middle; Figure 4 This is a schematic diagram of a ball joint for a lightweight front stabilizer bar structure in an electric vehicle.

[0014] Explanation of reference numerals in the attached figures. 1. Shaft; 2. Ball shell; 21. Groove; 22. Snap fastener; 23. Through hole; 24. Hole hole; 3. Ball seat; 31. Ball socket; 32. Groove; 4. Ball pin; 5. Dust cover. Detailed Implementation

[0015] It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0016] In the following description of the embodiments, 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 the embodiments of this application based on the specific circumstances.

[0017] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Please see Figures 1-4 The present invention provides a lightweight electric vehicle front stabilizer bar structure, including a rod body 1, a ball shell 2, a ball seat 3, and a ball pin 4. The ball shell 2 is made of plastic and includes a first end connected to the end of the rod body 1 by injection molding and a second end with a hemispherical groove 21. The ball seat 3 is hemispherical and is interference-fitted into the groove 21. The ball seat 3 has a ball socket 31 facing the opening of the groove 21. The ball head end of the ball pin 4 is rotatably inserted into the ball socket 31.

[0020] Compared with existing technologies, the above solution improves the stabilizer bar structure. By using a plastic spherical shell 2 and directly injection molding it into the end of the rod body 1, the plastic spherical shell 2 effectively reduces the overall weight of the stabilizer bar, achieving component lightweighting. Furthermore, the plastic spherical shell 2 also absorbs vibration and improves vibration isolation, making the stabilizer bar's transmission more stable. In addition, the rod body 1, which mainly bears the load, remains made of metal to ensure structural strength. The spherical shell 2 is connected to the rod body 1 through injection molding, resulting in good connection stability and convenient processing, avoiding problems associated with welding. The ball seat 3 is interference-fitted into the groove 21 of the spherical shell 2, ensuring the stability of the connection between them.

[0021] In this embodiment, a dust cover 5 is also included. The second end of the spherical shell 2 is provided with a protruding annular buckle 22 corresponding to the end face of the groove 21. The dust cover 5 is sleeved onto the buckle 22 to seal the groove 21, thereby preventing external impurities from entering between the ball seat 3 and the ball pin 4 and affecting their rotational fit.

[0022] As an improvement to this embodiment, the inner wall of the ball socket 31 is provided with several circumferential grooves 32, which are filled with lubricating oil / grease, so that the ball pin 4 rotates more smoothly in the ball socket 31.

[0023] The ball seat 3 is preferably made of the same plastic material as the ball shell 2, thereby further reducing the overall weight of the stabilizer bar and improving the resonance modes of the components. In this embodiment, both the ball seat 3 and the ball shell 2 are made of PA66 plastic.

[0024] As another improvement to this embodiment, the middle position of the bottom of the groove 21 extends through the through hole 23 on the outer wall of the spherical shell 2, and the corresponding position of the ball seat 3 passes through the through hole 23 and protrudes from the outer wall of the spherical shell 2, so that the groove 21 has a certain deformation space, which is conducive to a tighter fit between the groove 21 and the ball seat 3.

[0025] In addition, a perforated hole 24 can be provided on the outer wall of the first end of the spherical shell 2 to further reduce the overall weight of the stabilizer bar.

[0026] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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 a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lightweight front stabilizer bar structure for electric vehicles, characterized in that, The device includes a rod body (1), a ball shell (2), a ball seat (3), and a ball pin (4). The ball shell (2) is made of plastic. The ball shell (2) includes a first end connected to the end of the rod body (1) by injection molding and a second end with a hemispherical groove (21). The ball seat (3) is hemispherical and is fitted into the groove (21) with an interference fit. The ball seat (3) has a ball socket (31) facing the groove (21). The ball head end of the ball pin (4) is rotatably inserted into the ball socket (31).

2. The lightweight electric vehicle front stabilizer bar structure according to claim 1, characterized in that, It also includes a dust cover (5), and the second end of the spherical shell (2) is provided with a protruding annular buckle (22) corresponding to the end face of the groove (21). The dust cover (5) is sleeved onto the buckle (22) to achieve the closure of the groove (21).

3. The lightweight electric vehicle front stabilizer bar structure according to claim 1, characterized in that, The inner wall of the ball socket (31) is provided with a plurality of circumferential grooves (32), and the grooves (32) are filled with lubricating oil / grease.

4. The lightweight electric vehicle front stabilizer bar structure according to any one of claims 1-3, characterized in that, The ball seat (3) is made of the same material as the spherical shell (2).

5. The lightweight electric vehicle front stabilizer bar structure according to claim 1, characterized in that, The groove (21) extends from the center of the groove bottom to the through hole (23) on the outer wall of the spherical shell (2), and the corresponding position of the ball seat (3) passes through the through hole (23) and protrudes from the outer wall of the spherical shell (2).

6. The lightweight electric vehicle front stabilizer bar structure according to claim 1, characterized in that, The outer wall of the first end of the spherical shell (2) is provided with a perforated hole (24).

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