Air spring, suspension system and vehicle

Abstract

The utility model discloses an air spring, a suspension system and a vehicle. The air spring comprises an air bag, a supporting seat and a control valve, a main cavity is formed in the air bag, the supporting seat is connected with the air bag, at least two auxiliary cavities are formed in the supporting seat, the control valve is installed on the supporting seat, and the control valve is used for enabling the auxiliary cavities to be communicated with or disconnected from the main cavity. According to the air spring, the multiple auxiliary cavities are formed in the supporting base, the auxiliary cavities and the main cavity are controlled to be communicated or disconnected through the control valves, adjustment of various rigidities of the air spring can be achieved, and therefore the requirements for various rigidities are met, and the air spring is compact in structure and small in occupied space.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to an air spring, a suspension system having the air spring, and a vehicle having the suspension system. Background Technology

[0002] The stiffness of air springs is a crucial factor affecting vehicle comfort. Different spring stiffnesses are required depending on the driving conditions. This stiffness can be altered by changing the volume of the air spring chamber; the stiffness decreases as the chamber volume increases. In related technologies, air springs typically consist of an air spring body with a main chamber. Multi-chamber structures are achieved by adding additional chambers outside the air spring body. However, this method complicates the air spring's structure, increases design and manufacturing costs, and occupies a significant amount of space, hindering its placement in the suspension. Therefore, there is room for improvement. Utility Model Content

[0003] This application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, this application proposes an air spring with a compact structure and small footprint.

[0004] This application also proposes a suspension system having the aforementioned air springs.

[0005] This application also proposes a vehicle having the above-described suspension system.

[0006] An air spring according to an embodiment of this application includes: an air bladder, a support base, and a control valve. A main chamber is formed inside the air bladder. The support base is connected to the air bladder. The support base has a secondary chamber, and there are at least two secondary chambers. The control valve is installed on the support base and is used to connect or disconnect the secondary chamber from the main chamber.

[0007] According to the embodiments of this application, the air spring has multiple secondary chambers in the support base, and the secondary chambers are connected or disconnected from the main chamber by a control valve. This allows the air spring to achieve various stiffness adjustments, thereby meeting various stiffness requirements. Furthermore, the air spring has a compact structure and occupies less space.

[0008] According to some embodiments of this application, there are multiple control valves, and each of the multiple control valves corresponds one-to-one with a multiple auxiliary chamber. When any one of the control valves controls the corresponding auxiliary chamber to communicate with the main chamber, the expansion capacity of the air spring is equal.

[0009] According to some embodiments of this application, the multiple secondary chambers have equal volumes.

[0010] According to some embodiments of this application, the support base is provided with a mounting base, and there are at least two mounting bases. The control valve is installed on the mounting base, and the mounting base is connected to a chamber channel. The secondary chamber is connected to the main chamber through the chamber channel, and the control valve controls the opening and closing of the chamber channel.

[0011] The secondary chamber includes a first chamber and a second chamber. The control valve includes a first valve and a second valve. The chamber passage includes a first channel and a second channel. The mounting base includes a first mounting base and a second mounting base. The first valve is mounted on the first mounting base, and the first mounting base is connected to the first channel. The first chamber is connected to the main chamber through the first channel. The first valve controls the opening and closing of the first channel. The second valve is mounted on the second mounting base, and the second mounting base is connected to the second channel. The second chamber is connected to the main chamber through the second channel. The second valve controls the opening and closing of the second channel.

[0012] According to some embodiments of this application, the support includes: a first cover and a second cover, the first cover having a first half-cavity, the second cover having a second half-cavity opposite to the first half-cavity, the second cover and the first cover together forming the sub-cavity, and the airbag being connected and fixed to the second cover.

[0013] According to some embodiments of this application, the first half-cavity includes a first chamber first half-cavity and a second chamber first half-cavity; the second half-cavity includes a first chamber second half-cavity and a second chamber second half-cavity.

[0014] The first half of the first chamber is connected to the second half of the first chamber to form the first chamber, and the first half of the second chamber is connected to the second half of the second chamber to form the second chamber.

[0015] According to some embodiments of this application, the support base has a transition chamber that is connected to the main chamber.

[0016] According to some embodiments of this application, the first half-cavity includes a first half-cavity of a transition chamber, and the second half-cavity includes a second half-cavity of a transition chamber, wherein the first half-cavity of the transition chamber and the second half-cavity of the transition chamber communicate to form the transition chamber.

[0017] According to some embodiments of this application, the first mounting base and the second mounting base are disposed within the second cover body.

[0018] According to some embodiments of this application, the support base has a pressure holding valve mounting hole, the transition chamber is connected to the outside of the support base through the pressure holding valve mounting hole, the air spring further includes a pressure holding valve, the pressure holding valve is installed in the pressure holding valve mounting hole, and the pressure holding valve is used to open or close the pressure holding valve mounting hole.

[0019] According to some embodiments of this application, the support base includes an inner ring, an outer ring, a first end plate, a second end plate, a first partition, a second partition, and a third partition. The outer ring is sleeved on the outside of the inner ring and is separate from the inner ring. The first end plate connects one axial end of the inner ring and the outer ring, and the second end plate connects the other axial end of the inner ring and the outer ring. Each of the first partition, the second partition, and the third partition is connected to the inner ring, the outer ring, the first end plate, and the second end plate. A first chamber is formed between the first partition and the third partition, and a second chamber is formed between the second partition and the third partition. The support base has a transition chamber that communicates with the main chamber and is formed between the first partition and the second partition.

[0020] According to some embodiments of this application, the first chamber and / or the second chamber are provided with a reinforcing partition, the reinforcing partition has a partition notch, and the spaces on both sides of the reinforcing partition are connected through the partition notch.

[0021] According to some embodiments of this application, the inner ring is provided with an inner ring notch, and the transition chamber and the main chamber are connected through the inner ring notch.

[0022] According to some embodiments of this application, the inner ring includes a first inner ring formed on the first cover and a second inner ring formed on the second cover, the first inner ring and the second inner ring being mated and fitted at the mating end; the outer ring includes a first outer ring formed on the first cover and a second outer ring formed on the second cover, the first outer ring and the second outer ring being mated and fitted at the mating end; a first end plate connects the first inner ring and the first outer ring; a second end plate connects the second inner ring and the second outer ring; the first inner ring and / or the second inner ring are provided with an inner ring notch; the transition chamber and the main chamber are connected through the inner ring notch.

[0023] The first partition includes a first upper partition formed on the first cover and a first lower partition formed on the second cover, the first upper partition and the first lower partition being abutted and fitted at the abutting end; the second partition includes a second upper partition formed on the first cover and a second lower partition formed on the second cover, the second upper partition and the second lower partition being abutted and fitted at the abutting end; the third partition includes a third upper partition formed on the first cover and a third lower partition formed on the second cover, the third upper partition and the third lower partition being abutted and fitted at the abutting end.

[0024] According to some embodiments of this application, the air spring further includes a piston connected to the air bladder, a piston chamber is formed inside the piston, and the piston chamber is connected to the main chamber.

[0025] The suspension system according to the second aspect of this application includes the air spring described above.

[0026] According to the suspension system of this application embodiment, the air spring has multiple secondary chambers in the support seat, and the secondary chambers are connected or disconnected from the main chamber by the control valve, which can enable the air spring to adjust to a variety of stiffnesses, thereby meeting a variety of stiffness requirements. In addition, the air spring has a compact structure and occupies less space.

[0027] The vehicle according to the third aspect of this application includes the suspension system described above.

[0028] According to the vehicle of the present application embodiment, the air spring of its suspension system is provided with multiple secondary chambers in the support seat, and the secondary chambers are connected or disconnected from the main chamber by the control valve, so that the air spring can achieve multiple stiffness adjustments, thereby meeting multiple stiffness requirements. Moreover, the air spring has a compact structure and occupies less space.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of an air spring according to an embodiment of this application;

[0031] Figure 2 This is a cross-sectional schematic diagram of an air spring according to an embodiment of this application;

[0032] Figure 3 This is another cross-sectional schematic diagram of an air spring according to an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the second cover according to an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the first cover according to an embodiment of this application;

[0035] Figure 6 This is a schematic diagram of a suspension system according to an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of a vehicle according to an embodiment of this application.

[0037] Figure label:

[0038] Vehicle 1000, suspension system 100, air spring 10, support seat 1, first chamber 11, first half-chamber of first chamber 111, second half-chamber of first chamber 112, second chamber 12, first half-chamber of second chamber 121, second half-chamber of second chamber 122, transition chamber 13, first half-chamber of transition chamber 131, second half-chamber of transition chamber 132, first cover 14, second cover 15, first mounting seat 151, second mounting seat 152, pressure holding valve mounting hole 153, first channel 154, second channel 155, inner ring 161, first inner ring 1611, second inner ring 1612, inner ring notch 1 613, outer ring 162, first outer ring 1621, second outer ring 1622, first end plate 171, second end plate 172, first partition 181, first upper partition 1811, first lower partition 1812, second partition 182, second upper partition 1821, second lower partition 1822, third partition 183, third upper partition 1831, third lower partition 1832, reinforcing partition 184, partition notch 1841, first valve 2, second valve 3, shock absorber 4, outer shell 41, telescopic rod 42, airbag 5, main chamber 51, piston 6, piston chamber 61, protective cylinder 7, buffer body 8, top rubber assembly 9. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0040] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] The following is combined with Figures 1-7This application describes in detail an air spring 10, a suspension system 100 having the air spring 10, and a vehicle 1000 having the suspension system 100, according to embodiments of the present application.

[0042] Reference Figures 1-3 As shown, the air spring 10 according to an embodiment of this application may include: an air bag 5, a support base 1, and a control valve.

[0043] The airbag 5 contains a main chamber 51, and the support base 1 is connected to the airbag 5. Optionally, the airbag 5 can be made of an elastic material, such as a rubber airbag or a polyurethane airbag, so that the airbag 5 can deform to better adapt to changes in the amount of gas in the main chamber 51.

[0044] Optionally, the airbag 5 and the support base 1 can be connected and fixed by a fastening ring, clamp, or other connecting and fixing structure.

[0045] The support base 1 has at least two auxiliary chambers. A control valve is installed on the support base 1 to connect or disconnect the auxiliary chambers from the main chamber 51. Optionally, the number of auxiliary chambers connected to the main chamber 51 at the same time can be 0, 1, 2 or more, etc. By changing the number of auxiliary chambers connected to the main chamber 51 at the same time, the air spring 10 can achieve various stiffness adjustments to meet various stiffness requirements.

[0046] According to the embodiment of this application, the air spring 10 has multiple secondary chambers in the support base 1, and the secondary chambers are connected or disconnected from the main chamber 51 by a control valve. This allows the air spring 10 to achieve various stiffness adjustments, thereby meeting various stiffness requirements. Furthermore, the air spring 10 has a compact structure and occupies less space.

[0047] Taking a case with two accessory chambers as an example, refer to Figure 2 , Figures 4-5 As shown, the secondary chamber includes a first chamber 11 and a second chamber 12. The control valve includes a first valve 2 and a second valve 3. The first valve 2 is mounted on the support base 1 and is used to connect or disconnect the first chamber 11 from the main chamber 51. The second valve 3 is mounted on the support base 1 and is used to connect or disconnect the second chamber 12 from the main chamber 51. Specifically, the first chamber 11 and the main chamber 51 are connected or disconnected via the first valve 2, and the second chamber 12 and the main chamber 51 are connected or disconnected via the second valve 3. Thus, the first chamber 11 and the second chamber 12 are selectively connected or disconnected from the main chamber 51.

[0048] Specifically, the volume of the main chamber 51 is V0, the volume of the first chamber 11 is V1, and the volume of the second chamber 12 is V2. The first valve 2 and the second valve 3 are both normally open valves. When both valves 2 and 3 are energized, they are closed, and neither the first chamber 11 nor the second chamber 12 is connected to the main chamber 51. The effective volume of the air spring 10 during operation is only the volume V0 of the main chamber 51, corresponding to a stiffness of the first stiffness K1. When the first valve 2 is energized and the second valve 3 is de-energized, the first chamber 11 is not connected to the main chamber 51, but the second chamber 12 is connected to the main chamber 51. The effective volume of the air spring 10 during operation is the sum of the volumes of the main chamber 51 and the second chamber 12, i.e., V0 + V2. The stiffness of the air spring 10 is the second stiffness K2. When the first valve 2 is de-energized and the second valve 3 is energized, the first chamber 11 and the main chamber 51 are connected, and the second chamber 12 is not connected to the main chamber 51. The effective volume of the air spring 10 when it is working is the volume of the main chamber 51 plus the volume of the first chamber 11, i.e., V0 + V1, and the stiffness of the air spring 10 is the third stiffness K3. When both the first valve 2 and the second valve 3 are de-energized, the first valve 2 and the second valve 3 are open, the first chamber 11 and the main chamber 51 are connected, and the second chamber 12 is connected to the main chamber 51. The effective volume of the air spring 10 when it is working is the volume of the main chamber 51 plus the volumes of the first chamber 11 and the second chamber 12, i.e., V0 + V1 + V2, and the stiffness of the air spring 10 is the fourth stiffness K4.

[0049] When there are more than two auxiliary chambers, the stiffness of the air spring 10 can be adjusted by changing the number of auxiliary chambers connected to the main chamber 51.

[0050] The air spring 10 according to the embodiments of this application achieves various stiffness adjustments without the need for an additional external chamber. Compared with a general three-chamber air spring, the air spring 10 of this application has a simpler structure and lower design cost. It can be improved from a two-chamber air spring by only modifying the support base 1. At the same time, it has a more continuous and gentler stiffness gradient than a general two-chamber air spring.

[0051] According to the embodiment of this application, the air spring 10 has a first chamber 11 and a second chamber 12 in the support base 1. The first chamber 11 is connected to or disconnected from the main chamber 51 by the first valve 2 and the second chamber 12 is connected to or disconnected from the main chamber 51 by the second valve 3. This allows the air spring 10 to achieve various stiffness adjustments, thereby meeting various stiffness requirements. In addition, the air spring 10 has a compact structure and occupies a small space.

[0052] The air spring 10 of this application is constructed as a three-chamber air spring 10, which realizes multiple stiffness adjustment. Compared with the related technology, which realizes multiple stiffness adjustment by adding air chambers, the air spring 10 of this application has a simple structure, which reduces the complexity of the overall structure and design cost, and reduces the space occupied by the air spring 10 in the suspension system 100.

[0053] In some embodiments of this application, there are multiple control valves, each corresponding to a different auxiliary chamber. When any control valve connects its corresponding auxiliary chamber to the main chamber 51, the expansion capacity of the air spring 10 is equal. That is, there is no distinction between the auxiliary chambers; for example, the volume of a single auxiliary chamber is V0, and the volume of a single auxiliary chamber is V01. When none of the auxiliary chambers are connected to the main chamber 51, the effective volume of the air spring 10 is V0. When any auxiliary chamber is connected to the main chamber 51, the expansion capacity of the air spring 10 is always V01, meaning the effective volume of the air spring 10 is always V0 + V01. This allows for the seamless connection of the required number of auxiliary chambers to the main chamber 51, enabling the control valves to be used alternately, which helps reduce the frequency of use and improves the durability of the control valves.

[0054] In some embodiments of this application, the volumes of the multiple auxiliary chambers are equal. This makes the multiple auxiliary chambers indistinguishable; for example, if the volume of a single auxiliary chamber is V01, when the auxiliary chamber is connected to the main chamber 51, the expansion capacity of the air spring 10 is always V01. Therefore, the required number of auxiliary chambers can be connected to the main chamber 51 without distinction, and the control valve can be used alternately, which helps to reduce the frequency of use of the control valve and improve its durability.

[0055] Reference Figure 4 As shown, the secondary chamber includes a first chamber 11 and a second chamber 12, with the volumes of the first chamber 11 and the second chamber 12 being equal. Specifically, the space within the support base 1 is symmetrically divided into two chambers of equal volume. The volume V1 of the first chamber 11 equals the volume V2 of the second chamber 12. The second stiffness K2 is equal to the third stiffness K3. When the second stiffness K2 is required, the main chamber 51 needs to be expanded by V1. This can be achieved by energizing one of the first valve 2 and the second valve 3 while de-energizing the other, thus connecting one of the first chamber 11 and the second chamber 12 to the main chamber 51. For example, either the first valve 2 or the second valve 3 can be energized, achieving an effective working volume of V0 + V1. In this way, the first valve 2 and the second valve 3 can be used alternately, which helps reduce the frequency of use of the first valve 2 and the second valve 3 and improves their durability.

[0056] In some embodiments of this application, the support base 1 is provided with an installation base, and there are at least two installation bases. The control valve is installed on the installation base, and the installation base is connected to a chamber channel. The secondary chamber is connected to the main chamber 51 through the chamber channel, and the control valve controls the opening and closing of the chamber channel.

[0057] In some embodiments of this application, reference is made to Figure 4 As shown, the secondary chamber includes a first chamber 11 and a second chamber 12, the control valve includes a first valve 2 and a second valve 3, the chamber channel includes a first channel 154 and a second channel 155, the mounting base includes a first mounting base 151, the first valve 2 is mounted on the first mounting base 151, the first mounting base 151 is connected to the first channel 154, the first chamber 11 is connected to the main chamber 51 through the first channel 154, and the first valve 2 controls the opening and closing of the first channel 154.

[0058] Specifically, the first mounting base 151 has a cylindrical structure. One end of the first mounting base 151 is connected to the inner wall of the support base 1, and the other end of the first mounting base 151 is an open end. The interior of the first mounting base 151 forms a first mounting space, which is connected to the first chamber 11. The first channel 154 has a cylindrical structure. One end of the first channel 154 opens into the first mounting space of the first mounting base 151, and the other end opens into the main chamber 51. By setting the first channel 154, the position of the first mounting base 151 within the support base 1 can be designed more flexibly. It is not limited to placing the first mounting base 151 directly next to the main chamber 51. Instead, the first mounting base 151 and the main chamber 51 can be connected through the first channel 154, making the internal structural layout of the support base 1 more reasonable.

[0059] In some embodiments of this application, reference is made to Figure 4 As shown, the mounting base includes a second mounting base 152, a second valve 3 is mounted on the second mounting base 152, the second mounting base 152 is connected to a second channel 155, the second chamber 12 is connected to the main chamber 51 through the second channel 155, and the second valve 3 controls the opening and closing of the second channel 155.

[0060] Specifically, the second mounting base 152 has a cylindrical structure. One end of the second mounting base 152 is connected to the inner wall of the support base 1, and the other end is open. A second mounting space is formed inside the second mounting base 152, which is connected to the second chamber 12. The second channel 155 also has a cylindrical structure. One end of the second channel 155 opens into the second mounting space of the second mounting base 152, and the other end opens into the main chamber 51. By setting the second channel 155, the position of the second mounting base 152 within the support base 1 can be designed more freely. It is not limited to placing the second mounting base 152 directly next to the main chamber 51; instead, the second mounting base 152 and the main chamber 51 can be connected through the second channel 155, making the internal structural layout of the support base 1 more rational.

[0061] In some embodiments of this application, reference is made to Figures 1-5 As shown, the support base 1 includes: a first cover 14 and a second cover 15. The first cover 14 has a first half-cavity, and the second cover 15 has a second half-cavity. The second half-cavity is opposite to the first half-cavity. The second cover 15 and the first cover 14 together form a secondary chamber. The second cover 15 is connected and fixed to the first cover 14. The airbag 5 is connected and fixed to the second cover 15.

[0062] Optionally, the airbag 5 and the second cover 15 can be connected and fixed by a fastening ring, clamp, or other connecting and fixing structure.

[0063] In some embodiments of this application, the first half-cavity includes a first chamber first half-cavity 111 and a second chamber first half-cavity 121, and the second half-cavity includes a first chamber second half-cavity 112 and a second chamber second half-cavity 122. The first chamber first half-cavity 111 and the first chamber second half-cavity 112 communicate to form the first chamber 11, and the second chamber first half-cavity 121 and the second chamber second half-cavity 122 communicate to form the second chamber 12. In other words, the second cover 15 and the first cover 14 together form the first chamber 11 and the second chamber 12.

[0064] In some embodiments of this application, the support 1 has a transition chamber 13, which is connected to the main chamber 51.

[0065] The support base 1 has three independent sub-spaces: a transition chamber 13, a first chamber 11, and a second chamber 12. The transition chamber 13 is responsible for the gas exchange between the inside and outside of the air spring 10. Specifically, the transition chamber 13 is connected to the main chamber 51. By filling the transition chamber 13 with air, the gas can be further transported to the main chamber 51. Excess gas in the main chamber 51 can also be discharged to the outside of the air spring 10 through the transition chamber 13. The first valve 2 controls the connection and disconnection between the first chamber 11 and the main chamber 51, and the second valve 3 controls the connection and disconnection between the second chamber 12 and the main chamber 51.

[0066] In some embodiments of this application, the first half-cavity includes a transition chamber first half-cavity 131, and the second half-cavity includes a transition chamber second half-cavity 132. The transition chamber first half-cavity 131 and the transition chamber second half-cavity 132 communicate to form a transition chamber 13. In other words, the second cover 15 and the first cover 14 also enclose and form the transition chamber 13.

[0067] Specifically, the first cover 14 and the second cover 15 can be assembled together after being processed separately. By disassembling the support base 1 into the first cover 14 and the second cover 15, the forming and processing of the support base 1 is easier. Furthermore, before assembling the first cover 14 and the second cover 15, the first valve 2 is installed on the first mounting base 151 and the second valve 3 is installed on the second mounting base 152, making the installation of the first valve 2 and the second valve 3 more convenient.

[0068] In some embodiments of this application, the first cover 14 and the second cover 15 can be welded together by hot air welding to form a support base 1.

[0069] In some other embodiments of this application, the first cover 14 and the second cover 15 can be detachably connected by bolts, fasteners or snap-fit ​​structures.

[0070] In some embodiments of this application, reference is made to Figure 1 , Figures 4-5 As shown, the first cover 14 and the second cover 15 are both designed to be symmetrical, so that the volume of the first chamber 11 and the volume of the second chamber 12 are completely equal, and the layout of the first valve 2 and the second valve 3 is also completely symmetrical.

[0071] In some embodiments of this application, reference is made to Figure 4 As shown, the first mounting base 151 and the second mounting base 152 are disposed within the second cover 15. (Refer to...) Figures 1-3As shown, when the air spring 10 is applied to the vehicle 1000, the second cover 15 is located below the first cover 14. The first mounting base 151 and the second mounting base 152 are disposed inside the second cover 15, such that the open ends of the first mounting base 151 and the second mounting base 152 are both open upwards. After the first valve 2 is installed on the first mounting base 151 and the second valve 3 is installed on the second mounting base 152, the first valve 2 and the second valve 3 are not easy to fall off, thus improving the stability of the installation of the first valve 2 and the second valve 3.

[0072] In some embodiments of this application, reference is made to Figure 2 , Figure 4 As shown, the support base 1 has a pressure holding valve mounting hole 153, and the transition chamber 13 is connected to the outside of the support base 1 through the pressure holding valve mounting hole 153. The air spring 10 also includes a pressure holding valve, which is installed in the pressure holding valve mounting hole 153 and is used to open or close the pressure holding valve mounting hole 153.

[0073] In some embodiments of this application, the pressure-holding valve mounting hole 153 can be connected to an external air compressor or air tank. The transition chamber 13 is connected to the external air compressor or air tank through the pressure-holding valve mounting hole 153, realizing gas exchange between the outside world and the inside of the air spring 10.

[0074] In some embodiments of this application, reference is made to Figure 2 , Figures 4-5As shown, the support base 1 includes an inner ring 161, an outer ring 162, a first end plate 171, a second end plate 172, a first partition 181, a second partition 182, and a third partition 183. The outer ring 162 is sleeved on the outside of the inner ring 161 and is separate from the inner ring 161. The first end plate 171 and the second end plate 172 are arranged opposite to each other. The first end plate 171 connects one axial end of the inner ring 161 and the outer ring 162, and the second end plate 172 connects the other axial end of the inner ring 161 and the outer ring 162. When the air spring 10 is applied to the vehicle 1000, the first end plate 171 connects the upper end of the inner ring 161 and the outer ring 162, and the second end plate 172 connects the lower end of the inner ring 161 and the outer ring 162. Each of the first partition 181, the second partition 182, and the third partition 183 is connected to the inner ring 161, the outer ring 162, the first end plate 171, and the second end plate 172. The first chamber 11 is formed between the first partition 181 and the third partition 183, the second chamber 12 is formed between the second partition 182 and the third partition 183, and the transition chamber 13 is formed between the first partition 181 and the second partition 182. The arrangement of the first partition 181, the second partition 182, and the third partition 183 improves the structural strength of the support base 1, enabling it to withstand greater gas pressure. On the other hand, it divides the internal space of the support base 1 into three compartments. The first partition 181, the second partition 182, and the third partition 183 make adjacent compartments independent of each other. That is, the first partition 181, the second partition 182, and the third partition 183 divide the internal space of the support base 1 into a first chamber 11, a second chamber 12, and a transition chamber 13, which are independent of each other.

[0075] In some embodiments of this application, reference is made to Figure 4 As shown, one end of the first mounting base 151 and one end of the second mounting base 152 are both connected to the second end plate 172. The lower end of the first mounting base 151 and the lower end of the second mounting base 152 are both connected to the second end plate 172.

[0076] In some embodiments of this application, a reinforcing partition 184 is provided in the first chamber 11 and / or the second chamber 12. The reinforcing partition 184 has a partition notch 1841, and the spaces on both sides of the reinforcing partition 184 are connected through the partition notch 1841. That is, the reinforcing partition 184 divides the chamber into multiple compartments, and the partition notch 1841 on the reinforcing partition 184 completely connects two adjacent compartments. Thus, the arrangement of the reinforcing partition 184 does not significantly affect the volume of the chamber, and the spaces on both sides of the reinforcing partition 184 remain connected as a single space. The reinforcing partition 184 can increase the strength of the chamber, making it less prone to collapse and deformation. Figures 4-5In the illustrated embodiment, reinforcing partitions 184 are provided in both the first chamber 11 and the second chamber 12. In other words, reinforcing partitions 184 are provided between the first partition 181 and the third partition 183, and between the second partition 182 and the third partition 183. In embodiments not shown in the figures, reinforcing partitions 184 may be provided only in the first chamber 11, or only in the second chamber 12.

[0077] In some embodiments of this application, reference is made to Figure 2 , Figure 4 As shown, the inner ring 161 has an inner ring notch 1613, through which the transition chamber 13 is connected to the main chamber 51. The radially inner space enclosed by the inner ring 161 is part of the main chamber 51, and the radially inner space enclosed by the transition chamber 13 and the inner ring 161 is connected through the inner ring notch 1613, thus connecting the transition chamber 13 to the rest of the main chamber 51. When it is necessary to replenish the main chamber 51 with gas, the outside gas first enters the transition chamber 13, and then enters the main chamber 51 through the inner ring notch 1613.

[0078] In some embodiments of this application, reference is made to Figures 4-5 As shown, the inner ring 161 includes a first inner ring 1611 and a second inner ring 1612. The first inner ring 1611 is formed on the first cover 14, and the second inner ring 1612 is formed on the second cover 15. The first inner ring 1611 and the second inner ring 1612 are mated together, and the first inner ring 1611 and the second inner ring 1612 are attached to each other at the mating ends. In other words, the end of the first inner ring 1611 facing the second cover 15 is attached to the end of the second inner ring 1612 facing the first cover 14. This can separate the internal space of the support base 1 from the main chamber 51.

[0079] In some embodiments of this application, reference is made to Figures 4-5 As shown, the outer ring 162 includes a first outer ring 1621 and a second outer ring 1622. The first outer ring 1621 is formed on the first cover 14, and the second outer ring 1622 is formed on the second cover 15. The first outer ring 1621 and the second outer ring 1622 are mated together, and the first outer ring 1621 and the second outer ring 1622 are attached to each other at the mating ends. In other words, the end of the first outer ring 1621 facing the second cover 15 is attached to the end of the second outer ring 1622 facing the first cover 14, which can separate the internal space of the support base 1 from the external space.

[0080] In some embodiments of this application, reference is made to Figures 4-5As shown, the first end plate 171 connects the first inner ring 1611 and the first outer ring 1621, and the second end plate 172 connects the second inner ring 1612 and the second outer ring 1622. The first inner ring 1611 and / or the second inner ring 1612 are provided with an inner ring notch 1613, and the transition chamber 13 and the main chamber 51 are connected through the inner ring notch 1613.

[0081] Optionally, the inner ring notch 1613 may be provided only on the first inner ring 1611, or only on the second inner ring 1612, or a part of the same inner ring notch 1613 may be provided on the first inner ring 1611 and another part may be provided on the second inner ring 1612, or different inner ring notches 1613 may be provided on the first inner ring 1611 and the second inner ring 1612.

[0082] Optionally, the number of gaps 1613 in the inner ring can be one or more.

[0083] In some embodiments of this application, reference is made to Figures 4-5 As shown, the first partition 181 includes a first upper partition 1811 and a first lower partition 1812. The first upper partition 1811 is formed on the first cover 14, and the first lower partition 1812 is formed on the second cover 15. The first upper partition 1811 and the first lower partition 1812 are mated together, and the first upper partition 1811 and the first lower partition 1812 are attached to each other at their mating ends. In other words, the end of the first upper partition 1811 facing the second cover 15 is attached to the end of the first lower partition 1812 facing the first cover 14, which separates the spaces on both sides of the first partition 181, that is, separates the first chamber 11 from the transition chamber 13.

[0084] In some embodiments of this application, reference is made to Figures 4-5 As shown, the second partition 182 includes a second upper partition 1821 and a second lower partition 1822. The second upper partition 1821 is formed on the first cover 14, and the second lower partition 1822 is formed on the second cover 15. The second upper partition 1821 and the second lower partition 1822 are mated together, and the second upper partition 1821 and the second lower partition 1822 are attached to each other at the mating ends. In other words, the end of the second upper partition 1821 facing the second cover 15 is attached to the end of the second lower partition 1822 facing the first cover 14, which separates the spaces on both sides of the second partition 182, that is, separates the second chamber 12 from the transition chamber 13.

[0085] In some embodiments of this application, reference is made to Figures 4-5As shown, the third partition 183 includes a third upper partition 1831 and a third lower partition 1832. The third upper partition 1831 is formed on the first cover 14, and the third lower partition 1832 is formed on the second cover 15. The third upper partition 1831 and the third lower partition 1832 are mated together, and the third upper partition 1831 and the third lower partition 1832 are attached to each other at the mating ends. In other words, the end of the third upper partition 1831 facing the second cover 15 is attached to the end of the third lower partition 1832 facing the first cover 14, which can separate the spaces on both sides of the third partition 183, that is, separate the first chamber 11 from the second chamber 12.

[0086] In some embodiments of this application, reference is made to Figures 1-3 As shown, the air spring 10 also includes a piston 6, which is connected to the air bag 5. A piston chamber 61 is formed inside the piston 6, and the piston chamber 61 is connected to the main chamber 51.

[0087] In some embodiments of this application, reference is made to Figures 1-3 As shown, the air spring 10 also includes a protective cylinder 7, the first end of the piston 6 extends into the protective cylinder 7, the first end of the airbag 5 is sealed and fixed to the support seat 1, and the second end of the airbag 5 is connected to and sealed and fixed to the first end of the piston 6.

[0088] In some embodiments of this application, combined with Figures 1-3 As shown, the air spring 10 also includes a shock absorber 4, which includes a housing 41 and a telescopic rod 42. The telescopic rod 42 and the housing 41 are axially movable relative to each other. The second end of the piston 6 is connected to and sealed to the housing 41. One end of the housing 41 can extend into the piston 6, and the positions of the piston 6 and the housing 41 are relatively fixed. One end of the telescopic rod 42 is fixedly connected to the support seat 1, and the other end of the telescopic rod 42 extends into the housing 41. The housing 41 can be connected to the wheel hub of the vehicle 1000. During the driving of the vehicle 1000, when the wheel hub of the vehicle 1000 encounters a bumpy road surface, the telescopic rod 42 of the shock absorber 4 slides relative to the housing 41, thereby further compressing the high-pressure gas in the main chamber 51 or causing the high-pressure gas to act on the airbag 5 to expand, thereby providing nonlinear elastic force to the vehicle 1000 frame and wheel hub to achieve the effect of shock absorption and buffering.

[0089] In some embodiments of this application, combined with Figures 1-3 As shown, the air spring 10 also includes a buffer body 8, which is sleeved on the circumferential outer side of the telescopic rod 42 and located between the outer shell 41 and the support base 1. When the telescopic rod 42 and the outer shell 41 slide relative to each other, the buffer body 8 can provide a buffering effect between the outer shell 41 and the support base 1, preventing the support base 1 from colliding with the outer shell 41. Optionally, the buffer body 8 can be a rubber body, silicone body, etc.

[0090] In some embodiments of this application, combined with Figures 1-3 As shown, the air spring 10 also includes a top adhesive assembly 9, which is located above the buffer body 8. The top adhesive assembly 9 is sleeved on the circumferential outer side of the telescopic rod 42 and is also in contact with the inner ring 161 to seal the gap between the telescopic rod 42 and the inner ring 161.

[0091] Reference Figure 6 As shown, the suspension system 100 according to the second aspect of this application includes the air spring 10 described above.

[0092] According to the suspension system 100 of the present application embodiment, the air spring 10 is provided with multiple secondary chambers in the support seat 1, and the secondary chambers are connected or disconnected from the main chamber 51 by the control valve, so that the air spring 10 can achieve multiple stiffness adjustments, thereby meeting multiple stiffness requirements. In addition, the air spring 10 has a compact structure and occupies less space.

[0093] Reference Figure 7 As shown, the vehicle 1000 according to the third aspect embodiment of this application includes the suspension system 100 described above.

[0094] According to the embodiment of the present application, the air spring 10 of the vehicle 100 of the suspension system 100 is provided with multiple secondary chambers in the support seat 1, and the secondary chambers are connected or disconnected from the main chamber 51 by the control valve, so that the air spring 10 can achieve multiple stiffness adjustments, thereby meeting multiple stiffness requirements. In addition, the air spring 10 has a compact structure and occupies less space.

[0095] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 application.

[0096] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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 any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0098] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An air spring, characterized in that, include: An air bladder, within which a main chamber is formed; A support base, which is connected to the airbag, and the support base has a secondary chamber, wherein there are at least two secondary chambers; A control valve is mounted on the support base and is used to connect or disconnect the secondary chamber from the main chamber.

2. The air spring according to claim 1, characterized in that, There are multiple control valves, and each of the multiple control valves corresponds one-to-one with a multiple of the auxiliary chambers. When any one of the control valves controls the corresponding auxiliary chamber to connect with the main chamber, the expansion capacity of the air spring is equal.

3. The air spring according to claim 1 or 2, characterized in that, The volumes of the multiple auxiliary chambers are equal.

4. The air spring according to claim 1, characterized in that, The support base is provided with: a mounting base, at least two mounting bases, a control valve mounted on the mounting base, the mounting base connected to a chamber channel, the auxiliary chamber connected to the main chamber through the chamber channel, and the control valve controlling the opening and closing of the chamber channel.

5. The air spring according to claim 4, characterized in that, The secondary chamber includes a first chamber and a second chamber; the control valve includes a first valve and a second valve; the chamber passage includes a first passage and a second passage; and the mounting base includes: A first mounting base, a first valve mounted on the first mounting base, the first mounting base connected to the first channel, the first chamber connected to the main chamber via the first channel, and the first valve controlling the opening and closing of the first channel; and The second mounting base is used to mount the second valve. The second mounting base is connected to the second channel. The second chamber is connected to the main chamber through the second channel. The second valve controls the opening and closing of the second channel.

6. The air spring according to claim 5, characterized in that, The support base includes: A first cover, the first cover having a first semi-cavity; and The second cover has a second half-cavity opposite to the first half-cavity. The second cover and the first cover together form the sub-cavity, and the airbag is connected and fixed to the second cover.

7. The air spring according to claim 6, characterized in that, The first half-cavity includes a first chamber first half-cavity and a second chamber first half-cavity; the second half-cavity includes a first chamber second half-cavity and a second chamber second half-cavity. The first half of the first chamber is connected to the second half of the first chamber to form the first chamber, and the first half of the second chamber is connected to the second half of the second chamber to form the second chamber.

8. The air spring according to claim 7, characterized in that, The support base has a transition chamber, which is connected to the main chamber.

9. The air spring according to claim 8, characterized in that, The first half-cavity includes a first half-cavity of transition chamber, and the second half-cavity includes a second half-cavity of transition chamber. The first half-cavity of transition chamber and the second half-cavity of transition chamber are connected to form the transition chamber.

10. The air spring according to claim 6, characterized in that, The first mounting base and the second mounting base are disposed within the second cover body.

11. The air spring according to claim 8, characterized in that, The support base has a pressure holding valve mounting hole, and the transition chamber is connected to the outside of the support base through the pressure holding valve mounting hole. The air spring also includes a pressure holding valve, which is installed in the pressure holding valve mounting hole and is used to open or close the pressure holding valve mounting hole.

12. The air spring according to any one of claims 5-11, characterized in that, The support base includes an inner ring, an outer ring, a first end plate, a second end plate, a first partition, a second partition, and a third partition. The outer ring is sleeved on the outside of the inner ring and is separate from the inner ring. The first end plate connects one axial end of the inner ring and the outer ring, and the second end plate connects the other axial end of the inner ring and the outer ring. Each of the first partition, the second partition, and the third partition is connected to the inner ring, the outer ring, the first end plate, and the second end plate. A first chamber is formed between the first partition and the third partition, and a second chamber is formed between the second partition and the third partition. The support base has a transition chamber that communicates with the main chamber and is formed between the first partition and the second partition.

13. The air spring according to claim 12, characterized in that, The first chamber and / or the second chamber are provided with a reinforcing partition, and the reinforcing partition has a partition notch, and the spaces on both sides of the reinforcing partition are connected through the partition notch.

14. The air spring according to claim 12, characterized in that, The inner ring has an inner ring notch, and the transition chamber is connected to the main chamber through the inner ring notch.

15. The air spring according to claim 12, characterized in that, The inner ring includes a first inner ring formed on the first cover and a second inner ring formed on the second cover. The first inner ring and the second inner ring are mated and fitted at the mating end. The outer ring includes a first outer ring formed on the first cover and a second outer ring formed on the second cover. The first outer ring and the second outer ring are mated and fitted at the mating end. The first end plate connects the first inner ring and the first outer ring. The second end plate connects the second inner ring and the second outer ring. The first inner ring and / or the second inner ring are provided with an inner ring notch. The transition chamber and the main chamber are connected through the inner ring notch. The first partition includes a first upper partition formed on the first cover and a first lower partition formed on the second cover, the first upper partition and the first lower partition being abutted and fitted at the abutting end; the second partition includes a second upper partition formed on the first cover and a second lower partition formed on the second cover, the second upper partition and the second lower partition being abutted and fitted at the abutting end; the third partition includes a third upper partition formed on the first cover and a third lower partition formed on the second cover, the third upper partition and the third lower partition being abutted and fitted at the abutting end.

16. The air spring according to claim 1, characterized in that, The air spring also includes a piston connected to the air bladder, and a piston chamber is formed inside the piston, which is connected to the main chamber.

17. A suspension system, characterized in that, The air spring included in any one of claims 1-16.

18. A vehicle, characterized in that, Includes the suspension system as described in claim 17.

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