Air spring additional air chamber device, air spring and vehicle

Abstract

The utility model discloses an air spring additional air chamber device, an air spring and a vehicle, the air spring additional air chamber device comprises a first cylinder body and a second cylinder body, a plurality of mutually separated air chambers are arranged in the first cylinder body, the plurality of air chambers are arranged along the circumferential direction of the first cylinder body, a first through hole group is formed on each air chamber, and a second through hole group is formed on the second cylinder body. A plurality of second through holes distributed at intervals in the circumferential direction of the first cylinder are formed in the second cylinder, and the second cylinder is suitable for being capable of rotating relative to the first cylinder so as to adjust the communicating number of the second through holes and the first through hole set. Therefore, the first barrel comprises the multiple air chambers, the first through hole sets are formed in the air chambers, the second barrel is rotatable, the multiple second through holes are formed in the second barrel, and the second barrel is rotated to achieve flexible control over an air flowing path in the air spring additional air chamber device, so that the effective volume in the air spring additional air chamber device is adjusted; the purpose of dynamically adjusting the performance of the air spring is achieved, and the overall working efficiency of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an air spring additional air chamber device, an air spring and a vehicle. Background Art

[0002] In the prior art, the structure of the air spring additional air chamber device is relatively complex, the method of changing the effective volume of the additional air chamber is relatively cumbersome, and the airtightness is difficult to ensure. The air spring additional air chamber device in the prior art uses the rotation of the fan blade to change the effective volume of the additional air chamber, which will have a large error and cannot ensure the accuracy of the effective volume of the additional air chamber. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to provide an air spring additional air chamber device, which can adjust the effective volume in the air spring additional air chamber device to achieve the purpose of dynamically adjusting the performance of the air spring.

[0004] The second objective of the present utility model is to provide an air spring, comprising a spring body and the air spring additional air chamber device described in the above embodiment.

[0005] The third objective of the present utility model is to provide a vehicle, comprising the air spring described in the above embodiment.

[0006] According to the first embodiment of the utility model, the air spring additional air chamber device comprises: a first cylinder and a second cylinder. The first cylinder has a plurality of air chambers separated from each other, the plurality of air chambers are arranged along the circumference of the first cylinder, each of the air chambers is formed with a first through hole group, the first through hole group includes at least one first through hole; the second cylinder is nested with the first cylinder, a plurality of second through holes are formed on the second cylinder and are arranged at intervals along the circumference of the first cylinder, and the second cylinder is suitable for being rotatable relative to the first cylinder to adjust the number of connections between the second through holes and the first through hole group.

[0007] According to the air spring additional air chamber device of the embodiment of the utility model, the first cylinder contains multiple air chambers, a first through hole group is formed on the air chamber, the second cylinder is rotatable, and multiple second through holes are formed on the second cylinder. By rotating the second cylinder, the gas flow path inside the air spring additional air chamber device can be flexibly controlled, thereby adjusting the effective volume inside the air spring additional air chamber device, and achieving the purpose of dynamically adjusting the performance of the air spring. The movement mode of the air spring additional air chamber device is simple, which can ensure the accuracy of the air spring additional air chamber device during the overall working process and the stability of the air pressure inside the air chamber, and at the same time can improve the overall working efficiency of the air spring additional air chamber device.

[0008] In some embodiments, the first cylinder includes: an outer cylinder and an inner cylinder, the inner cylinder is arranged in the outer cylinder, an air cavity is defined between the outer cylinder and the inner cylinder, the first through hole is formed on the inner cylinder, and the second cylinder is rotatably arranged on the inner side of the inner cylinder; a plurality of partitions are arranged between the outer cylinder and the inner cylinder to divide the air cavity into a plurality of air chambers.

[0009] In some embodiments, the number of the first through holes in the plurality of first through hole groups is distributed in an arithmetic progression along the circumference of the first cylinder.

[0010] In some embodiments, the first through holes in each of the first through hole groups are spaced apart in the axial direction of the first cylinder, and the first through holes in two adjacent first through hole groups are at the same height in the axial direction of the first cylinder.

[0011] In some embodiments, the first through holes in each of the first through hole groups are arranged at equal intervals along the axial direction of the first cylinder.

[0012] In some embodiments, the first cylinder further includes: a first end cover and a second end cover, the first end cover and the second end cover are respectively arranged at the outer cylinder and the inner cylinder at both ends along the axial direction of the outer cylinder, the first end cover, the second end cover, the outer cylinder and the inner cylinder jointly define the air cavity, and the two ends of the plurality of partitions in the axial direction of the outer cylinder are respectively sealed with the first end cover and the second end cover.

[0013] In some embodiments, a plurality of first slots are formed on a surface of the first end cover facing the second end cover, a plurality of second slots are formed on a surface of the second end cover facing the first end cover, and both ends of the plurality of partitions in the axial direction of the outer cylinder are respectively fitted in the first slots and the second slots.

[0014] In some embodiments, the radial inner side of the plurality of partitions is connected to the inner cylinder, and the radial outer side of the plurality of partitions is fixed to the outer cylinder.

[0015] In some embodiments, the second cylinder includes: a cylinder body and a rod body, a plurality of the second through holes are formed on the cylinder body, and the cylinder body is rotatably disposed on the inner side of the inner cylinder; one end of the rod body is connected to the cylinder body, and the other end of the rod body extends out of the second end cover.

[0016] In some embodiments, the plurality of second through holes are respectively opposite to the plurality of first through hole groups, the plurality of second through holes are staggered along the axial direction of the barrel body and are at the same height as one of the first through holes in the first through hole group in the axial direction of the barrel body.

[0017] In some embodiments, it further includes: an angle sensor, wherein the angle sensor is disposed at one end of the cylinder body connected to the rod body.

[0018] In some embodiments, it further includes: a driver connected to the other end of the rod body to drive the cylinder body to rotate.

[0019] In some embodiments, the driver is a stepper motor.

[0020] In some embodiments, a connecting pipeline is provided on the first end cover, and the connecting pipeline is connected to the interior of the cylinder body.

[0021] An air spring, characterized in that it comprises: a spring body and an air spring additional air chamber device, wherein the air spring additional air chamber device is the air spring additional air chamber device according to the above-mentioned first aspect embodiment of the utility model, and the spring body is connected to the second cylinder of the air spring additional air chamber.

[0022] A vehicle, characterized by comprising an air spring according to the above-mentioned second aspect embodiment of the utility model.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a schematic diagram of an air spring additional air chamber device according to an embodiment of the utility model.

[0026] Figure 2 It is a schematic diagram of a first cylinder according to an embodiment of the utility model.

[0027] Figure 3 It is a schematic diagram of the second cylinder according to an embodiment of the utility model.

[0028] Figure 4 It is a cross-sectional view of the cooperation between the first cylinder and the second cylinder according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] 100. Additional air chamber device for air spring;

[0031] 10. first cylinder; 11. outer cylinder; 12. inner cylinder; 13. partition; 14. air chamber; 141. first air chamber; 142. second air chamber; 143. third air chamber; 144. fourth air chamber; 15. first through hole group; 16. first through hole;

[0032] 20. second cylinder; 21. cylinder body; 22. rod body; 23. second through hole;

[0033] 30. First end cover; 31. First slot; 32. Second end cover; 33. Second slot; 34. First mounting hole; 35. Connecting pipeline;

[0034] 40. Angle sensor; 41. Driver. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 4 The air spring additional air chamber device 100 according to the embodiment of the utility model comprises: a first cylinder 10 and a second cylinder 20 .

[0036] Specifically, if Figure 1-Figure 4 As shown, the first cylinder 10 has a plurality of air chambers 14 separated from each other, and the plurality of air chambers 14 are arranged along the circumference of the first cylinder 10, and a first through hole group 15 is formed on each air chamber 14, and the first through hole group 15 includes at least one first through hole 16; the second cylinder 20 is nested with the first cylinder 10, and a plurality of second through holes 23 are formed on the second cylinder 20 and arranged at intervals along the circumference of the first cylinder 10, and the second cylinder 20 is suitable for being rotatable relative to the first cylinder 10 to adjust the number of connections between the second through holes 23 and the first through hole group 15.

[0037] Combination Figure 1-Figure 4, the interior of the first cylinder 10 is divided into a plurality of independent air chambers 14, which are evenly arranged along the circumference of the first cylinder 10 to form an annular array of air chambers 14. The second cylinder 20 and the first cylinder 10 are nested in the following situations: first, the second cylinder 20 is matched inside the first cylinder 10. Second, the second cylinder 20 is matched outside the first cylinder 10. The second cylinder 20 can rotate circumferentially relative to the first cylinder 10, and when some of the first through holes 16 are opposite to the second through holes 23 of the corresponding air chambers 14, a communication channel is formed between the first cylinder 10 and the second cylinder 20, so that the gas in the air chambers 14 can circumferentially flow or exchange with the outside. When the second cylinder 20 rotates relative to the first cylinder 10, the position of the second through hole 23 will change, thereby changing the corresponding relationship between the second through hole 23 and the first through hole group 15 of each air chamber 14 on the first cylinder 10, thereby adjusting the gas distribution and pressure state inside the air spring additional air chamber device 100.

[0038] According to the air spring additional air chamber device 100 of the embodiment of the utility model, the first cylinder 10 contains a plurality of air chambers 14, a first through hole group 15 is formed on the air chamber 14, the second cylinder 20 is rotatable, and a plurality of second through holes 23 are formed on the second cylinder 20. By rotating the second cylinder 20, the air flow path of the air spring additional air chamber device 100 can be flexibly controlled, thereby adjusting the effective volume in the air spring additional air chamber device 100, and achieving the purpose of dynamically adjusting the performance of the air spring. The movement mode of the air spring additional air chamber device 100 is simple, which can ensure the accuracy of the air spring additional air chamber device 100 during the overall working process and the stability of the air pressure inside the air chamber 14, and at the same time can improve the overall working efficiency of the air spring additional air chamber device 100.

[0039] According to some embodiments of the present invention, Figure 2 As shown, the first cylinder 10 includes: an outer cylinder 11 and an inner cylinder 12, the inner cylinder 12 is arranged in the outer cylinder 11, an air cavity is defined between the outer cylinder 11 and the inner cylinder 12, a first through hole 16 is formed on the inner cylinder 12, and the second cylinder 20 is rotatably arranged on the inner side of the inner cylinder 12; a plurality of partitions 13, the plurality of partitions 13 are arranged between the outer cylinder 11 and the inner cylinder 12 to divide the air cavity into a plurality of air chambers 14.

[0040] The first through hole 16 is arranged to penetrate the inner cylinder 12 along the radial direction of the first cylinder 10, and each air chamber 14 is connected to one or more first through holes 16 on the inner cylinder 12. The second cylinder 20 is rotatably arranged on the inner side of the inner cylinder 12, and the second through hole 23 on the second cylinder 20 is disconnected or connected with the first through hole 16 on the inner cylinder 12 during the rotation process. When the second cylinder 20 rotates, the connection state between a specific air chamber 14 and the outside or other air chambers 14 will change with the alignment or misalignment of the second through hole 23 and the corresponding first through hole 16, thereby adjusting the gas pressure in each air chamber 14, thereby affecting the performance of the entire air spring.

[0041] Thus, the first cylinder 10 is constructed by the outer cylinder 11, the inner cylinder 12 and the fan-blade partition 13 disposed therebetween, forming a plurality of independent air chambers 14. The second cylinder 20 is still rotatably disposed inside the inner cylinder 12, and the connection state between the second through hole 23 and the first through hole 16 is adjusted by rotation to achieve precise control of the gas flow between the air chambers 14, and the fan-blade partition 13 structure may be more conducive to the control of gas flow and pressure balance between the air chambers 14.

[0042] According to some embodiments of the present invention, Figure 2 As shown, the number of the first through holes 16 of the plurality of first through hole groups 15 is distributed in an arithmetic progression along the circumference of the first cylinder 10 .

[0043] An arithmetic progression refers to a sequence in which the difference between each term and the previous term is equal to the same constant (tolerance) starting from the second term. Taking the air spring additional air chamber device 100 in this embodiment as an example, which contains four air chambers 14, four first through hole groups 15 are formed on the four air chambers 14, and the first through holes 16 in the four first through hole groups 15 are evenly spaced in the circumferential direction of the first cylinder 10, that is, the angular intervals between two adjacent first through holes 16 are equal. Assuming that one first through hole group 15 contains four first through holes 16, along the circumference of the first cylinder 10, the number of first through holes 16 contained in the remaining three first through hole groups 15 is: three, two, and one, respectively. Since the first through holes 16 are distributed in an arithmetic progression along the circumference, the linear arrangement formed by them on the surface of the inner cylinder 12 has good regularity and symmetry, which helps to control the gas communication between different air chambers 14 in a regular manner when the second cylinder 20 rotates.

[0044] Thus, the arithmetic sequence distribution makes it easy to calculate and predict the circumferential position of the first through hole 16, and is convenient for accurately controlling whether the gas between the specified air chambers 14 is flowing and the degree of circulation according to the rotation angle of the second cylinder 20, which is conducive to realizing the fine regulation of the performance of the air spring. In this embodiment, the volumes of the multiple air chambers 14 are the same, and the areas of the first through holes 16 are consistent. The arithmetic sequence distribution helps to make the pressure distribution of each air chamber 14 at different rotation positions of the second cylinder 20 more uniform, avoiding excessive or too low local pressure caused by uneven distribution of the first through holes 16. The regularity of the arithmetic sequence distribution simplifies the layout design and processing of the first through holes 16 on the inner cylinder 12, especially when it is necessary to manufacture multiple identical devices, a standardized process flow can be adopted to improve production efficiency and consistency.

[0045] According to some embodiments of the present invention, Figure 2 As shown, the first through holes 16 in each first through hole group 15 are arranged at intervals along the axial direction of the first cylinder 10 , and the first through holes 16 of two adjacent first through hole groups 15 are at the same height in the axial direction of the first cylinder 10 .

[0046] The first through holes 16 in the same first through hole group 15 are not on the same axial plane, but are spaced a certain distance apart along the axial direction of the first cylinder 10, and the adjacent first through holes 16 in different first through hole groups 15 along the circumference of the first cylinder 10 are on the same axial plane. This arrangement ensures that when the second cylinder 20 rotates, no matter which first through hole 16 at which height the second through hole 23 thereon is aligned with, at least one first through hole 16 at a different height can participate in the gas circulation, thereby enhancing the three-dimensionality and fluidity of the gas exchange.

[0047] Therefore, since the first through holes 16 are spaced apart in the axial direction and arranged at the same height in the first cylinder 10, the gas in the same air chamber 14 can communicate with the adjacent air chamber 14 or other air chambers 14 through the first through holes 16 at different heights, thereby increasing the diversity of the gas flow paths and improving the efficiency of gas mixing and pressure balance in the air spring additional air chamber device 100.

[0048] According to some embodiments of the present invention, Figure 2 As shown, the first through holes 16 in each first through hole group 15 are arranged at equal intervals along the axial direction of the first cylinder 10 .

[0049] All the first through holes 16 in the same first through hole group 15 are arranged at a fixed distance on one side of the first cylinder 10 in the axial direction, and the height difference between every two adjacent first through holes 16 is equal, ensuring the uniformity of the distribution of the first through holes 16 in the same first through hole group 15 in the circumferential direction of the first cylinder 10.

[0050] Thus, the first through holes 16 are distributed in an arithmetic progression in the circumferential and axial directions and are arranged at equal intervals in the axial direction, so that the flow of gas between the air chambers 14 is highly regular and controllable. Due to the equal-interval arrangement of the first through holes 16 in the axial direction, the gas exchange resistance between the air chambers 14 at different heights remains consistent or changes regularly, which helps to maintain the balance of the pressure distribution of each air chamber 14 and avoid performance fluctuations or equipment damage caused by excessive or low local pressure. The regularity of the equal-interval arrangement simplifies the axial layout design and processing process of the first through holes 16 on the inner cylinder 12, and can be mass-produced using standardized process flows to improve production efficiency and product quality consistency.

[0051] According to some embodiments of the present invention, Figure 1 As shown, the first cylinder 10 further includes: a first end cover 30 and a second end cover 32, the first end cover 30 and the second end cover 32 are respectively arranged at the axial ends of the outer cylinder 11 and the inner cylinder 12, the first end cover 30, the second end cover 32, the outer cylinder 11 and the inner cylinder 12 jointly define an air cavity, and the two ends of the plurality of partitions 13 in the axial direction of the outer cylinder 11 are respectively sealed with the first end cover 30 and the second end cover 32.

[0052] The first end cap 30, the second end cap 32, the outer cylinder 11 and the inner cylinder 12 together form a closed air cavity. The first end cap 30 is installed at one end of the first cylinder 10 along the axial direction, and the second end cap 32 is installed at the other end of the first cylinder 10 along the circumferential direction. The gap between the outer cylinder 11 and the inner cylinder 12 forms the main body of the air cavity. This structural design ensures that the gas inside the air cavity can only flow in a controlled manner through the first through hole 16 and the second through hole 23, and will not escape from the two ends of the first cylinder 10. One end of the partition 13 along the axial direction of the outer cylinder 11 is suitable for sealing with the first end cap 30, and the other end of the partition 13 along the axial direction of the outer cylinder 11 is suitable for sealing with the second end cap 32.

[0053] Thus, the first end cap 30 and the second end cap 32 provide reliable air tightness protection for the first cylinder 10, and together with the outer cylinder 11, the inner cylinder 12 and the partition 13, form a closed and clearly separated air cavity structure, ensuring that during the operation of the air spring additional air chamber device 100, the gas in each air chamber 14 can only be controlled to flow through the first through hole 16 and the second through hole 23, thereby achieving precise control of the air spring performance. At the same time, the sealing cooperation between the first end cap 30 and the second end cap 32 and the multiple partitions 13 effectively prevents gas leakage and disordered flow, ensuring the stability and reliability of the air spring additional air chamber device 100.

[0054] According to some embodiments of the present invention, Figure 1As shown, a plurality of first grooves 31 are formed on a side surface of the first end cover 30 facing the second end cover 32, and a plurality of second grooves 33 are formed on a side surface of the second end cover 32 facing the first end cover 30, and both ends of the plurality of partitions 13 in the axial direction of the outer cylinder body 11 are respectively fitted in the first grooves 31 and the second grooves 33.

[0055] A plurality of first slots 31 are arranged at intervals along the circumference of the first end cover 30, and the first slots 31 extend in the radial direction of the first end cover 30 in a direction away from the center of the first end cover 30. The first slots 31 are suitable for matching the shape and size of one end of the partition 13 adjacent to the first end cover 30 along the axial direction of the first cylinder 10, so that one end of the partition 13 can be embedded and firmly fixed in the first slot 31, and the number of the first slots 31 corresponds to the number of the partitions 13. Similarly, a plurality of second slots 33 are arranged at intervals along the circumference of the second end cover 32, and the second slots 33 extend in the radial direction of the second end cover 32 in a direction away from the center of the second end cover 32, and the second slots 33 are suitable for matching the shape and size of the other end of the partition 13 adjacent to the second end cover 32 along the axial direction of the first cylinder 10, so that the other end of the partition 13 can be embedded and firmly fixed in the second slot 33, and the number of the second slots 33 corresponds to the number of the partitions 13.

[0056] Thus, the first and second slots 31 and 33 on the first and second end caps 30 and 32 provide precise positioning and fixing methods for the partition 13, so that the partition 13 can be firmly installed at both ends of the air cavity, ensuring the effective separation of each air chamber 14 and the orderliness of gas circulation. This structural design not only enhances the overall stability and air tightness of the air spring additional air chamber device 100, but also simplifies the installation process of the partition 13, and improves the assembly efficiency and reliability of the air spring additional air chamber device 100.

[0057] According to some embodiments of the present invention, Figure 1 As shown, the inner sides of the plurality of partitions 13 in the radial direction of the outer cylinder 11 are connected to the inner cylinder 12 , and the outer sides of the plurality of partitions 13 in the radial direction of the outer cylinder 11 are fixed to the outer cylinder 11 .

[0058] The partition 13 extends radially along the first cylinder 10, and the radial inner edge of the partition 13 is connected to a side wall of the inner cylinder 12 away from the center of the first cylinder 10, and the radial outer edge of the partition 13 is connected to a side wall of the outer cylinder 11 adjacent to the center of the first cylinder 10.

[0059] Therefore, the partition 13 is connected to the inner cylinder 12 on the inner side and fixed to the outer cylinder 11 on the outer side, thereby achieving all-round and stable positioning in the first cylinder 10, ensuring that the partition 13 can maintain its separation function in the air cavity for a long time and stably, and effectively divide the air cavity into multiple independent air chambers 14. At the same time, this connection method also enhances the overall structural strength and durability of the air spring additional air chamber device 100, and improves its reliable operation capability under complex working conditions.

[0060] According to some embodiments of the present invention, Figure 3 As shown, the second cylinder 20 includes: a cylinder body 21 and a rod body 22, a plurality of second through holes 23 are formed on the cylinder body 21, and the cylinder body 21 is rotatably arranged on the inner side of the inner cylinder 12; one end of the rod body 22 is connected to the cylinder body 21, and the other end of the rod body 22 extends out of the second end cover 32.

[0061] The cylinder body 21 and the rod body 22 extend along the circumferential direction of the first cylinder body 10, and a plurality of second through holes 23 are provided along the radial direction of the cylinder body 21 and penetrate the side wall of the cylinder body 21. One end of the rod body 22 adjacent to the second end cover 32 along the axial direction of the second cylinder body 20 is fixedly connected to one end of the cylinder body 21 adjacent to the second end cover 32 along the axial direction of the second cylinder body 20. A first mounting hole 34 is formed on the second end cover 32, and the first mounting hole 34 penetrates the second end cover 32 along the axial direction of the second cylinder body 20. The first mounting hole 34 is opposite to the inner cylinder body 12 along the axial direction of the first cylinder body 10. The other end of the rod body 22 away from the second end cover 32 along the axial direction of the second cylinder body 20 is penetrated through the first mounting hole 34 and extends out of the second end cover 32, and the rod body 22 and the second end cover 32 are sealed and matched to ensure that gas will not leak from the matching point between the second cylinder body 20 and the second end cover 32.

[0062] Thus, the cylinder body 21 can be rotatably arranged on the inner side of the inner cylinder body 12, and the cylinder body 21 can rotate freely around its own axis inside the inner cylinder body 12. One end of the rod body 22 is connected to the cylinder body 21 to play a supporting and transmission role, and at the same time transmit its rotational motion to the outside of the first cylinder body 10, so as to control the rotation angle of the cylinder body 21 through an external operating mechanism to achieve the adjustment of the connection state between the second through hole 23 and the first through hole group 15.

[0063] According to some embodiments of the present invention, Figure 3 and Figure 4 As shown, the plurality of second through holes 23 are respectively opposite to the plurality of first through hole groups 15 , the plurality of second through holes 23 are staggered along the axial direction of the barrel body 21 and are at the same height as one of the first through holes 16 of the first through hole group 15 in the axial direction of the barrel body 21 .

[0064] Taking the air spring additional air chamber device 100 in this embodiment as an example, which contains four air chambers 14, four second through holes 23 are formed on the cylinder body 21, and the four second through holes 23 are evenly spaced in the circumferential direction of the cylinder body 21, that is, the angular intervals between every two adjacent second through holes 23 are equal, and the four second through holes 23 are arranged at equal intervals along the axial direction of the cylinder body 21, that is, the height difference between every two adjacent second through holes 23 in the axial direction of the cylinder body 21 is equal.

[0065] Therefore, due to the relative relationship between the second through hole 23 and the first through hole group 15 and the axial offset setting, no matter how the second cylinder 20 rotates, each second through hole 23 can always be aligned with a first through hole 16 at the same height in the first through hole group 15, ensuring that under any working state, at least one gas flow channel at a height always remains open, which helps to maintain the overall gas flow stability and performance consistency of the air spring additional air chamber device 100, and avoid drastic changes in performance due to blockage or failure of a single height through hole.

[0066] Combination Figure 1-Figure 4 , specifically:

[0067] Taking the air spring additional air chamber device 100 in this embodiment as an example, the four air chambers 14 are respectively the first air chamber 141, the second air chamber 142, the third air chamber 143 and the fourth air chamber 144, and a first through hole group 15 is formed on each of the four air chambers 14. The four first through holes 16 in the first through hole group 15 on the first air chamber 141 are respectively: a1, b1, c1, d1, the three first through holes 16 in the first through hole group 15 on the second air chamber 142 are respectively: a2, b2, c2, the two first through holes 16 in the first through hole group 15 on the third air chamber 143 are respectively: a3, b3, and the one first through hole 16 in the first through hole group 15 on the fourth air chamber 144 is: a4. The four second through holes 23 formed on the second cylinder 20 are: A, B, C, D. Among them, a1, a2, a3, a4 and A are at the same height in the axial direction of the first cylinder 10, b1, b2, b3 and B are at the same height in the axial direction of the first cylinder 10, c1, c2 and C are at the same height in the axial direction of the first cylinder 10, and d1 and D are at the same height in the axial direction of the first cylinder 10.

[0068] When the second cylinder 20 is in the initial position, the first through hole a1 is aligned and connected with the second through hole A, the first air chamber 141 is connected with the cylinder body 21, and the other three air chambers 14 are sealed by the second cylinder 20. At this time, the first air chamber 141 is an effective volume chamber, and the other three air chambers 14 are standby volume chambers. When the air spring needs to reduce stiffness, the second cylinder 20 rotates 90°, the first through hole a2 is aligned and connected with the second through hole A, the first through hole b1 is aligned and connected with the second through hole B, the first air chamber 141, the second air chamber 142 are connected with the cylinder body 21, and the other two air chambers 14 are sealed by the second cylinder 20. At this time, the first air chamber 141 and the second air chamber 142 are effective volume chambers, and the other two air chambers 14 are standby volume chambers. When the second cylinder 20 rotates 180°, the first through hole a3 is aligned and connected with the second through hole A, the first through hole b2 is aligned and connected with the second through hole B, and the first through hole c1 is aligned and connected with the second through hole C, the first air chamber 141, the second air chamber 142, the third air chamber 143 and the cylinder body 21 are connected, and the fourth air chamber 144 is sealed by the second cylinder 20. At this time, the first air chamber 141, the second air chamber 142 and the third air chamber 143 are effective volume chambers, and the fourth air chamber 144 is a spare volume chamber. When the second cylinder 20 rotates 270°, the first through hole a4 is aligned with the second through hole A, the first through hole b3 is aligned with the second through hole B, the first through hole c2 is aligned with the second through hole C, and the first through hole d1 is aligned with the second through hole D. The first air chamber 141, the second air chamber 142, the third air chamber 143, and the fourth air chamber 144 are all connected to the cylinder body 21. At this time, the four air chambers 14 are effective volume chambers, and this state is also the maximum effective volume of the air spring additional air chamber device 100. That is, when the second cylinder 20 rotates N times 90°, there are N+1 air chambers 14 connected to the cylinder body 21. In some embodiments, the air chambers 14 in the air spring additional air chamber device 100 are not limited to four.

[0069] According to some embodiments of the present invention, Figure 3 As shown, it further includes: an angle sensor 40, which is arranged at one end of the barrel body 21 connected to the rod body 22.

[0070] The angle sensor 40 is a sensor device capable of detecting the rotation angle of an object, usually by measuring the mechanical rotation angle or angular velocity and converting it into an electrical signal output. In the air spring additional air chamber device 100, the angle sensor 40 is arranged at one end of the cylinder body 21 connected to the rod body 22, and its function is to monitor the rotation angle of the cylinder body 21 in real time.

[0071] Therefore, the angle sensor 40 provides the air spring additional air chamber device 100 with accurate rotation angle monitoring capability, enabling the device to achieve more accurate and intelligent performance regulation, while enhancing fault diagnosis and prevention capabilities, further improving the overall performance and reliability of the device.

[0072] According to some embodiments of the present invention, Figure 1 As shown, it further includes: a driver 41, which is connected to the other end of the rod body 22 to drive the cylinder body 21 to rotate.

[0073] The driver 41 is a device that can provide a power source to operate the mechanical equipment. The driver 41 is connected to the other end of the rod body 22, and its function is to provide the required power for the rotation of the cylinder body 21, to achieve active control of the relative position of the second through hole 23 and the first through hole group 15, and then change the connection state of the second through hole 23 and the first through hole group 15, so as to achieve active and precise control of the performance of the air spring.

[0074] Therefore, the driver 41 provides the air spring additional air chamber device 100 with active and precise rotation control capability of the cylinder body 21, so that the device can achieve automatic and intelligent performance regulation, while improving operational convenience and further optimizing the overall performance and user experience of the device.

[0075] According to some embodiments of the present invention, the driver 41 is a stepping motor.

[0076] The stepper motor is known for its "stepping" characteristic, that is, each time it receives an electrical pulse signal, it will drive the motor rotor to move forward precisely by a fixed angle (called the step angle). This precise stepping characteristic enables the stepper motor to very accurately control the rotation angle of the barrel body 21, ensure the precise alignment of the second through hole 23 with the first through hole group 15, and achieve high-precision control of the air spring performance.

[0077] Therefore, the stepper motor as the driver 41 can fully utilize its advantages such as precise control, no cumulative error, fast response speed, and simple control, further improving the performance control accuracy, stability, and system integration and ease of use of the air spring additional air chamber device 100.

[0078] According to some embodiments of the present invention, Figure 1 As shown, a connecting pipe 35 is provided on the first end cover 30 , and the connecting pipe 35 is communicated with the interior of the cylinder body 21 .

[0079] One end of the connecting pipe 35 is suitable for communicating with the cylinder body 21, and the other end of the connecting pipe 35 is suitable for communicating with the air spring. The function of the connecting pipe 35 is to provide a physical connection channel between the inside of the cylinder body 21 and the external environment or other related systems to achieve functions such as gas injection or discharge.

[0080] Thus, through the connecting pipe 35, gas can be injected or discharged into the cylinder body 21 to adjust the gas pressure inside the air spring additional air chamber device 100, thereby changing the performance of the air spring, so as to adjust the stiffness, load-bearing capacity and other characteristics of the air spring.

[0081] The air spring according to the embodiment of the second aspect of the utility model includes: a spring body and an air spring additional air chamber device 100. The air spring additional air chamber device 100 is the air spring additional air chamber device 100 according to the embodiment of the first aspect of the utility model. The spring body is connected to the second cylinder 20 of the air spring additional air chamber 14.

[0082] The spring body is connected to the air spring additional air chamber device 100 through a connecting pipe 35. When the performance parameters of the air spring need to be changed, the second cylinder 20 can be rotated relative to the first cylinder 10 by a certain angle through the driver 41. During the rotation, the connection relationship between the second through hole 23 and the first through hole group 15 changes, and the previously connected air chamber 14 may be cut off, while other unconnected air chambers 14 may establish new connecting channels. By changing the number of connected air chambers 14, the pressure distribution of the gas inside the air spring can be changed, thereby realizing dynamic regulation of its performance parameters.

[0083] According to the air spring in the embodiment of the utility model, through the connection design between the spring body and the air spring additional air chamber device 100, the air spring additional air chamber device 100 can accurately and actively adjust the gas distribution and pressure inside the spring body, thereby realizing the control of the air spring performance, greatly improving the performance adaptability, controllability and stability of the air spring system.

[0084] The vehicle according to the embodiment of the third aspect of the utility model comprises the air spring according to the embodiment of the second aspect of the utility model.

[0085] According to the vehicle of the embodiment of the utility model, by applying the air spring described in the above embodiment, due to the presence of the air spring additional air chamber device 100, the air spring of the vehicle can accurately and actively adjust the spring performance (such as stiffness, damping, etc.) according to driving conditions, load changes, driving mode and other conditions, provide the best suspension response, thereby improving the vehicle's driving stability and ride comfort.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0087] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0089] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air spring additional air chamber device, characterized in that: include: A first cylinder, wherein the first cylinder has a plurality of air chambers separated from each other, the plurality of air chambers are arranged along the circumference of the first cylinder, each of the air chambers is formed with a first through hole group, and the first through hole group includes at least one first through hole; The second cylinder is nested with the first cylinder, and a plurality of second through holes are formed on the second cylinder and arranged at intervals along the circumference of the first cylinder. The second cylinder is suitable for being rotatable relative to the first cylinder to adjust the number of connections between the second through holes and the first through hole group.

2. The air spring additional air chamber device according to claim 1, characterized in that: The first cylinder comprises: outer cylinder; An inner cylinder, wherein the inner cylinder is disposed in the outer cylinder, an air cavity is defined between the outer cylinder and the inner cylinder, the first through hole is formed on the inner cylinder, and the second cylinder is rotatably disposed on the inner side of the inner cylinder; A plurality of partitions are provided between the outer cylinder and the inner cylinder to divide the air cavity into a plurality of the air chambers.

3. The air spring additional air chamber device according to claim 2, characterized in that: The number of the first through holes in the plurality of first through hole groups is distributed in an arithmetic progression along the circumference of the first cylinder.

4. The air spring additional air chamber device according to claim 3, characterized in that: The first through holes in each of the first through hole groups are spaced apart in the axial direction of the first cylinder, and the first through holes in two adjacent first through hole groups are at the same height in the axial direction of the first cylinder.

5. The air spring additional air chamber device according to claim 4, characterized in that: The first through holes in each of the first through hole groups are arranged at equal intervals along the axial direction of the first cylinder.

6. The air spring additional air chamber device according to any one of claims 2 to 5, characterized in that: The first cylinder further comprises: A first end cover and a second end cover, wherein the first end cover and the second end cover are respectively arranged at the two ends of the outer cylinder and the inner cylinder along the axial direction of the outer cylinder, the first end cover, the second end cover, the outer cylinder and the inner cylinder jointly define the air cavity, and the two ends of the plurality of partitions in the axial direction of the outer cylinder are respectively sealed with the first end cover and the second end cover.

7. The air spring additional air chamber device according to claim 6, characterized in that: A plurality of first slots are formed on a surface of the first end cover facing the second end cover, and a plurality of second slots are formed on a surface of the second end cover facing the first end cover, and both ends of the plurality of partitions in the axial direction of the outer cylinder are respectively fitted in the first slots and the second slots.

8. The air spring additional air chamber device according to claim 6, characterized in that: The inner side of the plurality of partitions in the radial direction of the outer cylinder is connected to the inner cylinder, and the outer side of the plurality of partitions in the radial direction of the outer cylinder is fixed to the outer cylinder.

9. The air spring additional air chamber device according to claim 6, characterized in that: The second cylinder comprises: A barrel body, a plurality of the second through holes are formed on the barrel body, and the barrel body is rotatably disposed on the inner side of the inner barrel body; A rod body, one end of which is connected to the barrel body, and the other end of which extends out of the second end cover.

10. The air spring additional air chamber device according to claim 9, characterized in that: The plurality of second through holes are respectively opposite to the plurality of first through hole groups, and the plurality of second through holes are staggered along the axial direction of the barrel body and are at the same height as one of the first through holes in the first through hole group in the axial direction of the barrel body.

11. The air spring additional air chamber device according to claim 9, characterized in that: Further including: An angle sensor is arranged at one end of the cylinder body connected to the rod body.

12. The air spring additional air chamber device according to claim 9, characterized in that: Further including: A driver is connected to the other end of the rod body to drive the cylinder body to rotate.

13. The air spring additional air chamber device according to claim 12, characterized in that: The driver is a stepping motor.

14. The air spring additional air chamber device according to claim 9, characterized in that: The first end cover is provided with a connecting pipeline, and the connecting pipeline is communicated with the interior of the cylinder body.

15. An air spring, characterized in that: include: Spring body; An air spring additional air chamber device, wherein the air spring additional air chamber device is the air spring additional air chamber device according to any one of claims 1 to 14, and the spring body is connected to the second cylinder of the air spring additional air chamber device.

16. A vehicle, characterized in that: Comprising an air spring according to claim 15.

Images