Double-cavity air spring with metal air chamber structure

Abstract

The utility model relates to the technical field of automobile design and manufacture, and discloses a double-cavity air spring with a metal air chamber structure, which comprises a metal framework, the top of the metal framework is fixedly connected with a fixing bolt, the interior of the metal framework is fixedly connected with a buffer block and top rubber, the outer side of the metal framework is fixedly connected with an air bag, and the air bag is fixedly connected with an air inlet. An outer side cavity component is fixedly connected to the outer side of the metal framework, an upper sealing piece and a lower sealing piece are fixedly connected between the metal framework and the outer side cavity component, a double-cavity switching electromagnetic valve is fixedly connected to the inner side of the metal framework, and a gas channel is formed in the bottom of the double-cavity switching electromagnetic valve. According to the utility model, the metal framework made of the aluminum alloy material is arranged, so that the strength is increased, the overall weight is lighter, the structure is simple, additional welding is not needed, the size of the cavity component is adjustable, and the layout is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile design and manufacturing, and more specifically to a double-cavity air spring with a metal air chamber structure. Background Art

[0002] Some automobile suspension systems use air springs. Air springs are sealed air bags filled with compressed air, and use the nonlinear restoring force of compressed air to achieve vibration isolation and cushioning effects, so as to reduce the up and down bumps of the car body and improve driving comfort. In order to improve the performance of the air suspension, the air spring adopts a double-chamber or even multi-chamber structure, and its structure is very complex. In view of this, in order to match the complex double-chamber structure and the arrangement of the solenoid valve, as well as to consider the strength problem, the double-chamber structure often adopts an injection molding structure with added glass fiber material, and the injection molding parts need to be welded to meet the design requirements, which is very difficult and there is a risk of injection molding defects. In addition, the strength of the injection molding parts cannot meet the needs, and it is necessary to embed a metal skeleton inside the injection molding parts, which greatly increases the difficulty of injection molding. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a double-chamber air spring with a metal air chamber structure to solve the problems existing in the above-mentioned background technology.

[0004] The utility model provides the following technical solution: a double-chamber air spring with a metal air chamber structure, comprising a metal frame, the top of the metal frame is fixedly connected with a fixing bolt, the inside of the metal frame is fixedly connected with a buffer block and a top glue, the outside of the metal frame is fixedly connected with an air bag, the outside of the metal frame is fixedly connected with an outer chamber component, an upper seal and a lower seal are fixedly connected between the metal frame and the outer chamber component, the inside of the metal frame is fixedly connected with a double-chamber switching solenoid valve, a gas channel is provided at the bottom of the double-chamber switching solenoid valve, and the double-chamber switching solenoid valve is arranged vertically.

[0005] Preferably, the metal frame can be made of aluminum alloy or other metals.

[0006] Preferably, an annular groove is provided at the lower part of the metal frame, and an annular groove for installing a sealing member is provided at the outside.

[0007] Preferably, the outer chamber component is a circular thin-walled component, and the two sides are fixed with inwardly turned edges.

[0008] Preferably, a sealing accessory is provided on the inner side of the top rubber, and a shock absorber is provided on the inner side of the sealing accessory.

[0009] Preferably, sealing rings are provided at the upper and lower ends of the dual-chamber switching solenoid valve, and are respectively installed and sealed with the upper and lower parts of the metal frame.

[0010] Technical effects and advantages of the present utility model:

[0011] 1. The present utility model is provided with a metal skeleton made of aluminum alloy, which is beneficial to increasing the strength, making its overall quality lighter, and can be adjusted according to different structural forms. The position of the annular thread is the airbag buckling position, which is integrated with the aluminum alloy skeleton, and the strength at this part can also be enhanced by adjusting the skeleton. It has good strength, and the overall skeleton bears the impact and tensile loads of the shock absorber. Its upper part is fixed to the vehicle body by mounting bolts, the middle rubber mounting screw shock absorber rod, and the lower annular groove fixes the airbag assembly; The integral structure has the advantages of high strength, good reliability, and few components.

[0012] 2. The present utility model is composed of an internal metal skeleton and an outer chamber component. Structurally, the components are relatively simple. The two are sealed with an O-ring and fixed by spinning on both sides. The outer chamber component only bears air pressure and does not bear the force from the shock absorber. Therefore, the overall structure is simple and no additional welding is required.

[0013] 3. The present utility model sets the outer chamber component as a cylindrical thin-walled steel material, which can adjust the size of the outer chamber component on the premise of ensuring the universality of the internal skeleton to meet the needs of the chamber sizes of different forms of products, making the performance of the product more diverse. And its two ends are fixed by spinning, ensuring good strength.

[0014] 4. The present utility model has better sealing performance through sealing components such as upper seals, lower seals, and rubber mountings. The traditional structure uses plastic parts welded form, and there are welding defects at the welding points, which require airtightness detection. This solution uses a sealing component sealing form, and the probability of poor sealing is lower, and the sealing performance is better.

[0015] 5. The present utility model arranges the dual-chamber switching solenoid valve in a vertical layout, which is convenient for the installation of the solenoid valve wiring harness and connectors, making its installation more convenient. It will not be limited by the welding method due to the use of an injection-molded air chamber structure, and can only adopt a horizontal layout, which is relatively fixed and not conducive to the installation of the wiring harness. Description of the Drawings

[0016] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model.

[0017] Figure 2 It is a partial schematic cross-sectional structure diagram of the present utility model.

[0018] Reference numerals are: 1, metal skeleton; 2, outer chamber component; 3, upper seal; 4, lower seal; 5, airbag; 6, buffer block; 7, rubber mounting; 8, fixing bolt; 9, dual-chamber switching solenoid valve; 10, gas passage. Detailed implementation mode

[0019] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the accompanying drawings in the present utility model. In addition, the forms of each structure described in the following implementation modes are merely examples. The double-chamber air spring with a metal air chamber structure involved in the present utility model is not limited to the structures described in the following implementation modes. All other implementation modes obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0020] The present utility model provides a double-chamber air spring with a metal air chamber structure, including a metal skeleton 1. A fixing bolt 8 is fixedly connected to the top of the metal skeleton 1. A buffer block 6 and a top rubber 7 are fixedly connected inside the metal skeleton 1. An airbag 5 is fixedly connected to the outside of the metal skeleton 1. An outer chamber component 2 is fixedly connected to the outside of the metal skeleton 1. An upper seal 3 and a lower seal 4 are fixedly connected between the metal skeleton 1 and the outer chamber component 2. A double-chamber switching solenoid valve 9 is fixedly connected to the inside of the metal skeleton 1. A gas passage 10 is provided at the bottom of the double-chamber switching solenoid valve 9. A fixing steel ring is provided outside the airbag 5. The double-chamber switching solenoid valve 9 is vertically arranged, which is convenient for the installation of the solenoid valve wire harness and the connector inside the engine compartment, making its installation more convenient. It will not be limited by the welding method due to the air chamber structure using injection-molded parts, and can only adopt a horizontal layout, with a relatively fixed layout, which is not conducive to the installation of the wire harness.

[0021] Further, the metal skeleton 1 can be made of aluminum alloy material and other metals, making its overall strength higher and its quality lighter. At the same time, it can be adjusted according to different structural forms. The position of the annular thread is the crimping position of the airbag 5, and it is integrated with the aluminum alloy skeleton. The strength at this place can also be enhanced by adjusting the skeleton. Its strength is good, and the overall skeleton bears the impact and tensile loads of the shock absorber.

[0022] Further, a circular groove is provided at the lower part of the metal skeleton 1, and an annular groove for installing a seal is provided outside. The circular groove is used for fixing the airbag 5, and the annular groove is used for installing the upper seal 3 and the lower seal 4.

[0023] Further, the outer chamber component 2 is a circular thin-walled part, and the two sides adopt a structure of inward flanging and fixing. The size of the outer chamber component 2 can be adjusted on the premise of ensuring the universality of the internal skeleton to meet the needs of the chamber sizes of different forms of products, making the performance of the product more diverse. And its two ends are fixed by spinning, ensuring good strength.

[0024] Further, a sealing accessory is provided inside the top rubber 7, and a shock absorber is provided inside the sealing accessory for shock absorption.

[0025] Furthermore, there are sealing rings at the upper and lower ends of the double-chamber switching solenoid valve 9, which are respectively installed and sealed with the upper and lower parts of the metal skeleton 1 to ensure the sealing effect.

[0026] The working principle of the present utility model: By providing a metal skeleton 1 made of aluminum alloy material, the overall strength is higher and the quality is lighter. At the same time, it can be adjusted according to different structural forms. The position of the annular thread is the crimping position of the airbag 5, and it is integrated with the aluminum alloy skeleton. The strength at this place can also be enhanced by adjusting the skeleton. Its strength is good, and the overall skeleton bears the impact and tensile loads of the shock absorber. It is composed of the internal metal skeleton 1 and the outer chamber component 2. Structurally, the components are relatively simple. The two are sealed with an O-ring and fixed by spinning on both sides. The outer chamber component 2 only bears air pressure and does not bear the force from the shock absorber. Therefore, the overall structure is simple and no additional welding is required. By setting the outer chamber component 2 as a cylindrical thin-walled steel material, the size of the outer chamber component 2 can be adjusted on the premise of ensuring the universality of the internal skeleton to meet the needs of the chamber sizes of different forms of products, making the performance of the product more diverse. And its two ends are fixed by spinning to ensure good strength. Through sealing components such as the upper seal 3, the lower seal 4, and the top rubber 7, the sealing performance is better. The traditional structure uses a plastic part welding form, and there are welding defects at the welding points, which requires airtightness detection. This solution uses a sealing component sealing form, and the probability of poor sealing is lower, and the sealing performance is better. The double-chamber switching solenoid valve 9 is set in a vertical layout, which is convenient for the installation of the solenoid valve wire harness and the connector inside the engine compartment, making its installation relatively convenient.

[0027] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or the communication inside two components. It can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0028] Second: In the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above description is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A double-chamber air spring with a metal air chamber structure, comprising a metal skeleton (1), characterized in that: A fixing bolt (8) is fixedly connected to the top of the metal framework (1). A buffer block (6) and a top rubber (7) are fixedly connected inside the metal framework (1). An airbag (5) is fixedly connected to the outside of the metal framework (1). An outer chamber component (2) is fixedly connected to the outside of the metal framework (1). An upper seal (3) and a lower seal (4) are fixedly connected between the metal framework (1) and the outer chamber component (2). A dual-chamber switching solenoid valve (9) is fixedly connected to the inside of the metal framework (1). A gas passage (10) is provided at the bottom of the dual-chamber switching solenoid valve (9). The dual-chamber switching solenoid valve (9) is vertically arranged.

2. The double-chamber air spring with a metal air chamber structure according to claim 1, wherein: The metal framework (1) can be made of aluminum alloy material and other metals.

3. The double-chamber air spring with a metal air chamber structure according to claim 1, characterized in that: A circular groove is provided at the lower part of the metal framework (1), and a ring groove for installing a seal is provided on the outside.

4. The double-chamber air spring with a metal air chamber structure according to claim 1, wherein: The outer chamber component (2) is a circular thin-walled part, and the two sides adopt a structure fixed by inwards flanging.

5. The double-chamber air spring with a metal air chamber structure according to claim 1, characterized in that: A sealing accessory is provided inside the top rubber (7), and a shock absorber is provided inside the sealing accessory.

6. The double-chamber air spring with a metal air chamber structure according to claim 1, wherein: Sealing rings are provided at the upper and lower ends of the dual-chamber switching solenoid valve (9), and are respectively installed and sealed with the upper and lower parts of the metal framework (1).

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