An independent suspension axle structure

Abstract

This utility model relates to the field of automotive suspension system technology, and in particular to an independent suspension axle structure. It solves the problem in existing technologies where airbags, as important shock-absorbing components, lack any external protective structure. This makes them susceptible to dust, mud, and mechanical scratches in harsh road conditions or during long-term use, leading to accelerated aging, reduced lifespan, and impacting the overall vehicle's shock absorption and ride comfort. The axle structure includes an airbag, a conical protective shell, and a cylindrical protective shell. The airbag is housed inside the cylindrical protective shell and detachably connected to it via a connecting structure. The conical and cylindrical protective shells together form a segmented external protective structure. By adding a protective shell, this utility model provides comprehensive physical isolation and environmental protection for the airbag, significantly extending its lifespan.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension system technology, and in particular to an independent suspension axle structure. Background Technology

[0002] Independent suspension is a common type of automotive suspension system. Its characteristic is that each wheel is connected to the frame or body relatively independently, allowing them to move independently according to road conditions, thus effectively improving ride smoothness and handling stability. The axle, as a crucial component of the automotive transmission system, plays a vital role in transmitting power, supporting the vehicle's weight, and coordinating wheel movement. In modern automotive design, the axle structure, especially the axle structure of independent suspension systems, has a decisive impact on overall vehicle performance.

[0003] Utility model patent CN 218367251 U discloses an independent suspension drive axle for automobiles. This structure includes a drive assembly fixed to the vehicle frame via a drive bracket. The output end of the drive assembly is connected to a wheel hub assembly via a drive shaft. The wheel hub assembly is rotatably mounted in a wheel-side bracket. Two control arms are hinged between the wheel-side bracket and the drive bracket. A longitudinal arm is provided between the wheel-side bracket and the vehicle frame. Fixing the drive assembly to the vehicle frame via the drive bracket prevents the drive assembly from bouncing with the tires, reducing unsustainable mass and the vehicle's center of gravity, thus improving ride comfort and stability. The control arms between the drive bracket and the wheel-side bracket improve the vehicle's lateral stability. This axle structure is simple, easy to assemble and maintain, significantly reduces material usage and weight, resulting in better vehicle performance. The addition of elastic plate longitudinal arms enhances vertical support and is rationally arranged to improve anti-nose-dive capability, while also providing partial support to the vehicle body, preventing excessive body displacement and reducing axle torsion angle.

[0004] However, there are still obvious technical defects in this patented structure: as an important shock absorption component, the airbag has no external protective structure, which makes it susceptible to dust, mud and water erosion and mechanical scratches in harsh road environments or during long-term use, thereby accelerating aging, reducing service life, and affecting the shock absorption effect and driving comfort of the whole vehicle.

[0005] Therefore, to address the shortcomings of existing technologies, we urgently need an independent suspension axle structure to solve this problem. This new type of independent suspension axle should, while maintaining the original lightweight and high stability, further optimize the protective structure of key components such as airbags, improve overall durability and adaptability, significantly enhance vehicle performance under various operating conditions, and better meet the demands of modern automobiles for high reliability, low maintenance costs, and long service life, providing strong support for the development of the automotive industry, especially high-performance and new energy vehicles. Summary of the Invention

[0006] The purpose of this invention is to provide an independent suspension axle structure that solves the problem in the prior art where airbags, as important shock-absorbing components, lack any external protective structure, making them susceptible to dust, mud, and mechanical scratches in harsh road environments or during long-term use. This leads to accelerated aging, reduced service life, and affects the overall shock absorption and driving comfort of the vehicle.

[0007] To achieve the above objectives, this utility model provides an independent suspension axle structure, including an airbag, a conical protective shell, and a cylindrical protective shell;

[0008] The conical protective shell is adapted to the bottom of the outer ring of the airbag and connected to the bottom of the cylindrical protective shell, and the airbag is disposed inside the cylindrical protective shell;

[0009] Both the conical protective shell and the cylindrical protective shell have several through slots on their outer rings. The top end of the cylindrical protective shell is detachably connected to the outer ring of the airbag via a connecting structure. The inner bottom of the conical protective shell has a through hole for the airbag connection end to pass through.

[0010] The connecting structure includes a top ring and an outer ring. The inner ring of the outer ring is fixedly connected to the outer ring of the cylindrical protective shell, and the inner ring of the top ring is connected to the outer ring of the air bladder. The outer ring and the top ring are detachably connected.

[0011] Both the conical protective shell and the cylindrical protective shell are made of aluminum alloy, and the connection between the conical protective shell and the cylindrical protective shell is made of reinforcing ring plate.

[0012] The outer ring has several snap-fit ​​grooves at its bottom and at its top. The outer ring has several side plates. Each side plate has a snap-fit ​​plate that matches the snap-fit ​​groove at its top and bottom. The two snap-fit ​​plates are connected by a locking screw.

[0013] The bottom end of the airbag is connected to a bottom ring via a positioning ring. Several positioning screws are fixedly connected to the bottom of the bottom ring. The bottom inner ring of the conical protective shell is connected to an inner ring. Several positioning holes adapted to the positioning screws are opened at the bottom of the inner ring. Positioning nuts are connected to the ends of the positioning screws.

[0014] The top ring is provided with a second positioning ring, the bottom of which is fixedly connected to the bottom of the top ring, and the inner ring of the second positioning ring is fixedly connected to the outer ring of the air bag with bolts.

[0015] This utility model discloses an independent suspension axle structure that, through the use of a cylindrical protective shell and a conical protective shell, provides enveloping protection for the airbag, effectively preventing the intrusion of contaminants such as dust, mud, and sand, and significantly extending the service life of the airbag. Simultaneously, the through-groove design on the two protective shells further optimizes ventilation and heat dissipation performance while ensuring the normal expansion and contraction function of the airbag, preventing material performance degradation due to excessively high local temperatures. Furthermore, the special structure of the conical protective shell helps guide airflow and reduce the risk of bottom impacts, improving the vehicle's adaptability and reliability under harsh road conditions. The detachable design of the connecting structure also facilitates later maintenance and replacement of the airbag, improving the maintainability and economy of the equipment. In summary, this utility model significantly improves the protection level of the airbag and the overall durability of the axle system without adding excessive weight, meeting the actual needs of modern automobiles for high-performance, high-reliability independent suspension systems. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the conical protective shell and the cylindrical protective shell according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the top ring structure of an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the outer ring and the snap-fit ​​groove in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the positioning ring displacement structure of the bottom ring and the embodiment of this utility model;

[0022] Figure 6 This is an embodiment of the present utility model. Figure 3 Schematic diagram of the structure at point A.

[0023] In the diagram: 1. Conical protective shell; 2. Cylindrical protective shell; 3. Airbag; 4. Top ring; 5. Snap-fit ​​groove; 6. Outer ring; 7. Positioning hole; 8. Inner ring; 9. Positioning screw; 10. Bottom ring; 11. Positioning ring one; 12. Positioning ring two; 13. Side plate; 14. Snap-fit ​​plate; 15. Locking screw. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. Example 1

[0025] Please see Figure 1-6 As shown, an independent suspension axle structure in this embodiment includes an airbag 3, a conical protective shell 1, and a cylindrical protective shell 2;

[0026] The conical protective shell 1 is adapted to the bottom of the outer ring of the airbag 3 and connected to the bottom of the cylindrical protective shell 2. The airbag 3 is located inside the cylindrical protective shell 2.

[0027] Both the conical protective shell 1 and the cylindrical protective shell 2 have several through slots on their outer rings. The top of the cylindrical protective shell 2 is detachably connected to the outer ring of the airbag 3 via a connecting structure. The inner bottom of the conical protective shell 1 has a through hole for the connecting end of the airbag 3 to pass through.

[0028] The working process is as follows: During vehicle operation, the airbag 3 is installed inside the cylindrical protective shell 2 as a shock-absorbing element, and is detachably and fixedly connected to the top of the cylindrical protective shell 2 through a connecting structure to ensure its stability in the working state; the bottom connecting end of the airbag 3 passes through the through hole opened at the bottom of the conical protective shell 1, so that it can normally transmit support force and buffering effect; the conical protective shell 1 and the cylindrical protective shell 2 together form a segmented external protection structure, and both have several through grooves on their outer rings, which can not only ensure the volume change space of the airbag 3 during the inflation and deflation process, but also effectively prevent external dust, mud and water and foreign objects from directly contacting the airbag surface; the bottom of the conical protective shell 1 is connected to the frame or suspension structure, and the overall structure layout is reasonable and the force is evenly distributed, which can provide the airbag 3 with all-round physical isolation and environmental protection under complex road conditions, while not affecting its original elastic performance and shock absorption function. Example 2

[0029] Please see Figure 1-6As shown in the figure, an independent suspension axle structure in this embodiment includes a top ring 4 and an outer ring 6 in its connecting structure. The inner ring of the outer ring 6 is fixedly connected to the outer ring of the cylindrical protective shell 2, and the inner ring of the top ring 4 is connected to the outer ring of the airbag 3. The outer ring 6 and the top ring 4 are detachably connected. Specifically, through the cooperative arrangement of the top ring 4, the outer ring 6, and the snap-fit ​​groove 5 in the connecting structure, when the airbag 3 is installed, its top is fixedly connected to its inner ring through the top ring 4, and the top ring 4 and the outer ring 6 are locked together through the snap-fit ​​groove 5. This achieves the effect of improving the stability of the connection between the airbag 3 and the top of the cylindrical protective shell 2, while also enabling detachable installation, facilitating later maintenance and replacement, and improving assembly efficiency and structural reliability.

[0030] The bottom of the outer ring 6 and the top of the top ring 4 are provided with several snap-fit ​​grooves 5. The outer ring 6 is provided with several side plates 13. One top and one bottom of each side plate 13 are fixedly connected to snap-fit ​​plates 14 that are adapted to the snap-fit ​​grooves 5. The two snap-fit ​​plates 14 are connected by locking screws 15. Specifically, through the snap-fit ​​grooves 5 opened at the bottom of the outer ring 6 and the top of the top ring 4, and the cooperation of the side plates 13, snap-fit ​​plates 14 and locking screws 15 provided on the outer ring 6, after the initial snap-fit ​​is completed, the snap-fit ​​parts can be further tightened by locking screws 15 to enhance the firmness of the connection. This achieves the effect of improving the vibration resistance and anti-loosening performance of the connection structure, so that the airbag 3 can still maintain a stable working state under complex road conditions.

[0031] A second positioning ring 12 is provided at the top of the top ring 4. The bottom of the second positioning ring 12 is fixedly connected to the bottom of the top ring 4, and the inner ring of the second positioning ring 12 is bolted to the outer ring of the airbag 3. Specifically, by adding the second positioning ring 12 to the top of the top ring 4 and fixing it to the outer ring of the airbag 3 with bolts, the load-bearing capacity and sealing performance of the top connection point are further enhanced based on the connection between the top of the airbag 3 and the top ring 4. This achieves the effect of improving the sealing performance and tensile strength of the top connection structure, ensuring that the airbag 3 can maintain a good working condition under high pressure or frequent compression, and extending its service life. Example 3

[0032] Please see Figure 1-6As shown in the figure, in this embodiment of an independent suspension axle structure, both the conical protective shell 1 and the cylindrical protective shell 2 are made of aluminum alloy. The connection between the conical protective shell 1 and the cylindrical protective shell 2 is achieved through a reinforcing ring plate. Specifically, by using aluminum alloy for both the conical protective shell 1 and the cylindrical protective shell 2 and connecting them with a reinforcing ring plate, the connection strength and sealing performance between the two protective shells are enhanced while ensuring overall lightweight design. This achieves the effect of improving the durability and deformation resistance of the protective structure, while also taking into account corrosion resistance and heat dissipation functions, providing a more stable operating environment for the internal airbag 3.

[0033] The bottom end of the airbag 3 is connected to a bottom ring 10 via a positioning ring 11. Several positioning screws 9 are fixedly connected to the bottom of the bottom ring 10. An inner ring 8 is connected to the bottom inner ring of the conical protective shell 1. Several positioning holes 7, matching the positioning screws 9, are opened at the bottom of the inner ring 8. Positioning nuts are connected to the ends of the positioning screws 9. Specifically, the bottom ring 10 connected to the bottom end of the airbag 3 via the positioning ring 11, along with the positioning screws 9 and the positioning holes 7 on the conical protective shell 1, are designed to precisely position and fix the bottom structure of the airbag 3 to the vehicle frame or suspension system during installation. This improves the connection accuracy and stability of the bottom of the airbag 3, preventing displacement or detachment during use and ensuring the long-term reliable operation of the shock absorption system.

[0034] The overall structure of this device includes an airbag 3, a conical protective shell 1, a cylindrical protective shell 2, a top ring 4, an outer ring 6, a snap-fit ​​groove 5, a side plate 13, a snap-fit ​​plate 14, a locking screw 15, a first positioning ring 11, a bottom ring 10, a positioning screw 9, a positioning hole 7, and a second positioning ring 12. Its working process is as follows: During vehicle operation, the airbag 3, acting as a shock-absorbing element, is installed inside the cylindrical protective shell 2 and is detachably and fixedly connected to the top of the cylindrical protective shell 2 via a connecting structure. Specifically, the top of the airbag 3 is fixedly connected to its inner ring via the top ring 4. The top ring 4 and the outer ring 6 are locked together via the snap-fit ​​groove 5. Both the bottom of the outer ring 6 and the top of the top ring 4 are provided with snap-fit ​​grooves 5, and the connection is further reinforced by the side plate 13 on the outer ring 6, its snap-fit ​​plate 14, and the locking screw 15. The bottom end of the airbag 3 is positioned... Ring 11 is connected to bottom ring 10. Bottom ring 10 has multiple positioning screws 9 at its bottom. These positioning screws 9 pass through positioning holes 7 at the bottom of conical protective shell 1 and are fixed by positioning nuts. Conical protective shell 1 and cylindrical protective shell 2 together form a segmented external protection structure. Both have several through grooves on their outer rings, which can ensure the space for volume change when the airbag 3 is inflated and deflated, and can effectively prevent external dust, mud and water and foreign objects from directly contacting the airbag surface. The bottom of conical protective shell 1 is connected to the vehicle frame or suspension structure to ensure that the overall structure layout is reasonable and the force is evenly distributed.

[0035] The overall beneficial effects of this device are reflected in the following aspects: First, the engagement groove 5 between the top ring 4 and the outer ring 6 achieves a stable connection between the airbag 3 and the top of the cylindrical protective shell 2, while also providing detachability for easy maintenance and replacement, thus improving assembly efficiency and structural reliability. Second, the conical protective shell 1 and the cylindrical protective shell 2 are made of aluminum alloy and connected by reinforcing ring plates, ensuring lightweight while enhancing the durability and deformation resistance of the protective structure, and taking into account corrosion resistance and heat dissipation functions, providing a more stable operating environment for the internal airbag 3. Third, the combination design of the engagement groove 5 at the bottom of the outer ring 6 and the top of the top ring 4, along with the side plate 13, engagement plate 14, and locking screw 15, ensures a stable connection after initial engagement. The locking screw 15 can be used to further tighten the snap-fit ​​part, which improves the vibration resistance and anti-loosening performance of the connection structure, so that the airbag 3 can still maintain a stable working state under complex road conditions; Fourth, the bottom ring 10 connected to the bottom end of the airbag 3 by the positioning ring 11 is set to cooperate with the positioning screw 9 and the positioning hole 7 on the conical protective shell 1, which ensures the accuracy and stability of the bottom connection of the airbag 3, prevents displacement or falling off during use, and ensures the long-term reliable operation of the shock absorption system; Finally, the positioning ring 12 added to the top of the top ring 4 and the bolt fixed to the outer ring of the airbag 3 further strengthens the load-bearing capacity and sealing performance of the top connection point, ensuring that the airbag 3 can still maintain a good working state under high pressure or frequent compression, and extending its service life.

[0036] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An independent suspension axle structure, characterized by comprising: include: Airbags, conical protective shells, and cylindrical protective shells; The conical protective shell is adapted to the bottom of the outer ring of the airbag and connected to the bottom of the cylindrical protective shell, and the airbag is disposed inside the cylindrical protective shell; Both the conical protective shell and the cylindrical protective shell have several through slots on their outer rings. The top end of the cylindrical protective shell is detachably connected to the outer ring of the airbag via a connecting structure. The inner bottom of the conical protective shell has a through hole for the airbag connection end to pass through.

2. The structure of the independent suspension axle according to claim 1, characterized in that, The connecting structure includes a top ring and an outer ring. The inner ring of the outer ring is fixedly connected to the outer ring of the cylindrical protective shell, and the inner ring of the top ring is connected to the outer ring of the air bladder. The outer ring and the top ring are detachably connected.

3. The structure of the independent suspension axle according to claim 1, characterized in that, Both the conical and cylindrical protective shells are made of aluminum alloy, and the connection between the conical and cylindrical protective shells is made of reinforcing ring plates.

4. The structure of the independent suspension axle according to claim 2, characterized in that, The bottom of the outer ring and the top of the top ring are provided with a number of snap-fit ​​grooves. The outer ring is provided with a number of side plates. The top and bottom of one side plate are fixedly connected with snap-fit ​​plates that are adapted to the snap-fit ​​grooves. The two snap-fit ​​plates are connected by locking screws.

5. The structure of the independent suspension axle according to claim 3, characterized in that, The bottom end of the airbag is connected to a bottom ring via a positioning ring. Several positioning screws are fixedly connected to the bottom of the bottom ring. The bottom inner ring of the conical protective shell is connected to an inner ring. Several positioning holes adapted to the positioning screws are opened at the bottom of the inner ring. Positioning nuts are connected to the ends of the positioning screws.

6. The structure of the independent suspension axle according to claim 4, characterized in that, The top ring is provided with a second positioning ring, the bottom of which is fixedly connected to the bottom of the top ring, and the inner ring of the second positioning ring is fixedly connected to the outer ring of the air bag with bolts.

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