A rear beam arm structural component for new energy vehicles

Abstract

This utility model discloses a rear beam arm structure for new energy vehicles, including an arm body. A grid-shaped reinforcing partition is fixedly installed inside the arm body. A first supporting connecting column is fixedly installed on one side of the arm body, and a second supporting connecting column is fixedly installed at one end of the arm body. The rear beam arm structure of this utility model, with its first and second supporting connecting columns, has one end extending into the interior of the arm body and fixedly connected to the grid-shaped reinforcing partition, increasing the connection points and improving the strength of the connection between the first and second supporting connecting columns. A pre-tightening structure, installed on the outer wall of the first and second supporting connecting columns, provides continuous pre-tightening force after the threaded connection of the first and second supporting connecting columns. The reaction force of the helical spring eliminates loosening after the bolt connection.

Description

Technical Field

[0001] This utility model relates to the field of rear beam arm technology for new energy vehicles, specifically a rear beam arm structural component for new energy vehicles. Background Technology

[0002] As a key component connecting the wheels to the vehicle body / subframe, the rear beam arm of a new energy vehicle directly affects the vehicle's safety and durability through its structural strength and connection stability.

[0003] In the prior art, in order to reduce vehicle weight and power consumption, the rear beam arm is usually designed as a hollow structure, and a grid-shaped reinforcing partition is added inside the arm to improve overall strength.

[0004] For example, Chinese patent CN214493099U discloses a rear beam arm structural component for new energy vehicles, which optimizes the installation and positioning of the rear beam arm sealing plate through structures such as limiting posts and limiting slots, but it still has the following shortcomings:

[0005] 1. Insufficient connection strength: The existing support connecting columns of the rear beam arm (such as the first support connecting column and the second support connecting column) are usually only connected to the outer wall of the arm, resulting in a single connection point. Under long-term stress or vibration conditions, fatigue fracture or loosening is likely to occur.

[0006] 2. Threaded connections are prone to loosening: When the support connecting column is connected to the wheel or body by bolts, the threaded connection is prone to loosening due to the vibration and impact of the vehicle during operation, which in turn affects the stability and safety of the structure.

[0007] 3. Limited corrosion resistance: The anti-corrosion coating of some rear beam arms is not thick enough or the material performance is poor, making it difficult to cope with corrosion in complex environments (such as humidity, salt spray, etc.), which shortens the service life of the components.

[0008] Therefore, we propose a rear beam arm structural component for new energy vehicles. Utility Model Content

[0009] (a) Technical problems to be solved

[0010] To address the shortcomings of existing technologies, this utility model provides a rear beam arm structural component for new energy vehicles, which has advantages such as improving the strength of the connection between the first support connecting column, the second support connecting column and the arm body, and improving the stability after threaded connection, thus effectively solving the problems in the background technology.

[0011] (II) Technical Solution

[0012] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rear beam arm structure for a new energy vehicle, comprising an arm body, wherein a grid-shaped reinforcing partition is fixedly installed inside the arm body, a first supporting connecting column is fixedly installed on one side of the arm body, and a second supporting connecting column is fixedly installed at one end of the arm body. The rear ends of the first and second supporting connecting columns both penetrate into the interior of the arm body and are fixedly connected to the grid-shaped reinforcing partition. The outer walls of the first and second supporting connecting columns are provided with a pre-tightening structure, wherein the pre-tightening structure includes a fixed ring, a movable ring, a helical spring, a first limiting ring, an annular groove, and a second limiting ring. The fixed ring and the movable ring are sleeved on the outer walls of the first and second supporting connecting columns, and one end of the outer surface of the fixed ring is fixedly connected to the outer wall of the arm body.

[0013] Preferably, the annular groove is formed on the inner wall of the fixed ring, and the first limiting ring is fixedly installed in the inner cavity of the fixed ring at one end near the arm body.

[0014] Preferably, the helical spring is movably sleeved on the outer wall of the first support connecting column and the second support connecting column, and the helical spring is fixedly installed between the outer surface of one end of the first limiting ring and the outer surface of one end of the movable ring, the second limiting ring is fixedly installed on the outer wall of the movable ring near the end of the helical spring, and the second limiting ring is located in the annular groove.

[0015] Preferably, the outer wall of the movable ring and the inner wall of the fixed ring are slidably connected, and the inner wall of the movable ring is slidably connected to the outer walls of the first supporting connecting column and the second supporting connecting column.

[0016] Preferably, one end of the outer surface of the movable ring is elastically connected to one end of the first limiting ring via a helical spring, and the outer wall of the second limiting ring is slidably connected to the annular groove.

[0017] Preferably, the outer surface of the arm is coated with an anti-corrosion coating, the thickness of which is 50μm-100μm, and the anti-corrosion coating is made of epoxy resin.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a rear beam arm structural component for new energy vehicles, which has the following beneficial effects:

[0020] 1. This new energy vehicle rear beam arm structural component has a first support connecting column and a second support connecting column whose rear ends penetrate through the arm body and are directly fixedly connected to a grid-shaped reinforcing partition. This increases the number of connection points, significantly improves the structural strength and fatigue resistance between the support connecting column and the arm body, and effectively avoids breakage or loosening caused by long-term stress or vibration.

[0021] 2. This new energy vehicle rear beam arm structural component, by setting a pre-tightening structure on the outer wall of the first and second support connecting columns, utilizes the reaction force of the helical spring to provide a continuous pre-tightening force for the threaded connection. When the bolt is tightened, the movable ring is compressed, causing the helical spring to contract. The elastic restoring force of the spring can counteract the loosening tendency caused by vibration, thereby ensuring the long-term stability of the threaded connection.

[0022] 3. The rear beam arm structural component of this new energy vehicle is coated with a 50μm-100μm thick epoxy resin anti-corrosion coating on the outer surface of the arm, which has excellent corrosion resistance and adhesion, and can effectively resist the erosion of harsh environments such as humidity and salt spray, thus extending the service life of the rear beam arm. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a rear beam arm structure for a new energy vehicle according to the present invention.

[0024] Figure 2 This is a partial structural diagram of a rear beam arm structure for a new energy vehicle according to the present invention.

[0025] Figure 3 This is a schematic diagram of the pre-tightening structure in a rear beam arm structure of a new energy vehicle according to the present invention.

[0026] Figure 4 This is a side cross-sectional view of the pre-tightening structure in the rear beam arm structure of a new energy vehicle according to this utility model.

[0027] In the diagram: 1. Arm body; 2. First support connecting column; 3. Second support connecting column; 4. Pre-tightening structure; 5. Grid-shaped reinforcing partition; 6. Fixed ring; 7. Movable ring; 8. Helical spring; 9. First limiting ring; 10. Annular groove; 11. Second limiting ring. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] This embodiment is a rear beam arm structural component for a new energy vehicle.

[0030] like Figure 1-4As shown, the arm includes an arm body 1. A grid-shaped reinforcing partition 5 is fixedly installed inside the arm body 1. A first supporting connecting column 2 is fixedly installed on one side of the arm body 1, and a second supporting connecting column 3 is fixedly installed at one end of the arm body 1. The rear ends of the first supporting connecting column 2 and the second supporting connecting column 3 both penetrate into the interior of the arm body 1 and are fixedly connected to the grid-shaped reinforcing partition 5. The outer walls of the first supporting connecting column 2 and the second supporting connecting column 3 are provided with a pre-tightening structure 4. The pre-tightening structure 4 includes a fixed ring 6, a movable ring 7, a helical spring 8, a first limiting ring 9, an annular groove 10, and a second limiting ring 11. The fixed ring 6 and the movable ring 7 are sleeved on the outer walls of the first supporting connecting column 2 and the second supporting connecting column 3, and the outer surface of one end of the fixed ring 6 is fixedly connected to the outer wall of the arm body 1.

[0031] An annular groove 10 is formed on the inner wall of the fixed ring 6. The first limiting ring 9 is fixedly installed in the inner cavity of the fixed ring 6 near the end of the arm body 1. The helical spring 8 is movably sleeved on the outer wall of the first supporting connecting column 2 and the second supporting connecting column 3. The helical spring 8 is fixedly installed between the outer surface of one end of the first limiting ring 9 and the outer surface of one end of the movable ring 7. The second limiting ring 11 is fixedly installed on the outer wall of the movable ring 7 near the end of the helical spring 8. The second limiting ring 11 is located in the annular groove 10. The outer wall of the movable ring 7 is slidably connected to the inner wall of the fixed ring 6. The inner wall of the movable ring 7 is slidably connected to the outer wall of the first supporting connecting column 2 and the second supporting connecting column 3. The outer surface of one end of the movable ring 7 is elastically connected to one end of the first limiting ring 9 through the helical spring 8. The outer wall of the second limiting ring 11 is slidably connected to the annular groove 10. The outer surface of the arm body 1 is coated with an anti-corrosion coating with a thickness of 50μm-100μm. The anti-corrosion coating is made of epoxy resin.

[0032] It should be noted that this utility model is a rear beam arm structure for a new energy vehicle. The arm body 1 and the grid-shaped reinforcing partition 5 described herein are both existing technologies and can be readily understood by those skilled in the art; therefore, further details are omitted. The first support connecting column 2 and the second support connecting column 3 are provided, with their rear ends penetrating into the interior of the arm body 1 and fixedly connected to the grid-shaped reinforcing partition 5. This increases the connection points after the first support connecting column 2 and the second support connecting column 3 are installed, thereby improving their strength. Both the outer walls of the connecting column 2 and the second supporting connecting column 3 are provided with a pre-tightening structure 4. After the boom 1 is connected between the wheel hub and the body / subframe, the first supporting connecting column 2 and the second supporting connecting column 3 are installed by bolts. The movable ring 7 in the pre-tightening structure 4 is squeezed and slides along the inner wall of the fixed ring 6. The movable ring 7 drives the second limiting ring 11 to slide along the annular groove 10. The movable ring 7 squeezes the helical spring 8. Therefore, after the first supporting connecting column 2 and the second supporting connecting column 3 are installed, the helical spring 8 is in a squeezed state. The reaction force of the helical spring 8 is used to eliminate the looseness after the threaded connection.

[0033] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A rear beam arm structure for a new energy vehicle, comprising an arm body (1), wherein a grid-shaped reinforcing partition (5) is fixedly installed inside the arm body (1), a first supporting connecting column (2) is fixedly installed on one side of the arm body (1), and a second supporting connecting column (3) is fixedly installed at one end of the arm body (1), characterized in that: The rear ends of the first support connecting column (2) and the second support connecting column (3) both penetrate into the interior of the arm body (1) and are fixedly connected to the grid-shaped reinforcing partition (5). The outer walls of the first support connecting column (2) and the second support connecting column (3) are provided with a pre-tightening structure (4). The pre-tightening structure (4) includes a fixed ring (6), a movable ring (7), a spiral spring (8), a first limiting ring (9), an annular groove (10), and a second limiting ring (11). The fixed ring (6) and the movable ring (7) are sleeved on the outer walls of the first support connecting column (2) and the second support connecting column (3), and one end of the outer surface of the fixed ring (6) is fixedly connected to the outer wall of the arm body (1).

2. The rear beam arm structural component for a new energy vehicle according to claim 1, characterized in that: The annular groove (10) is formed on the inner wall of the fixed ring (6), and the first limiting ring (9) is fixedly installed in the inner cavity of the fixed ring (6) at one end near the arm body (1).

3. A rear beam arm structural component for a new energy vehicle according to claim 2, characterized in that: The helical spring (8) is movably sleeved on the outer wall of the first support connecting column (2) and the second support connecting column (3), and the helical spring (8) is fixedly installed between the outer surface of one end of the first limiting ring (9) and the outer surface of one end of the movable ring (7). The second limiting ring (11) is fixedly installed on the outer wall of the movable ring (7) near the end of the helical spring (8), and the second limiting ring (11) is located in the annular groove (10).

4. A rear beam arm structural component for a new energy vehicle according to claim 3, characterized in that: The outer wall of the movable ring (7) is slidably connected to the inner wall of the fixed ring (6), and the inner wall of the movable ring (7) is slidably connected to the outer walls of the first support connecting column (2) and the second support connecting column (3).

5. A rear beam arm structural component for a new energy vehicle according to claim 4, characterized in that: One end of the outer surface of the movable ring (7) is elastically connected to one end of the first limiting ring (9) through a helical spring (8), and the outer wall of the second limiting ring (11) is slidably connected to the annular groove (10).

6. A rear beam arm structural component for a new energy vehicle according to claim 5, characterized in that: The outer surface of the arm body (1) is coated with an anti-corrosion coating, the thickness of which is 50μm-100μm and the anti-corrosion coating is made of epoxy resin.

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