Air suspension crossbeam and subframe

Abstract

The present application relates to an air suspension crossbeam and a subframe, the air suspension crossbeam comprising a crossbeam body and a partition, a gas storage space for storing gas is formed inside the crossbeam body, the crossbeam body is provided with a first gas inlet and outlet; the partition is provided inside the crossbeam body, the length extension direction of the partition is the same as the length extension direction of the crossbeam body, and the gas storage space is divided into two air chambers, the two air chambers are connected through a second gas inlet and outlet, and one of the air chambers is connected to the gas inlet and outlet. The present application can solve the problem in the related art that it is difficult to arrange a gas storage tank in a narrow space.

Description

Technical Field

[0001] The present application relates to the technical field of automobile manufacturing, and in particular to an air suspension crossbeam and a subframe. Background Art

[0002] The gas tank is an important gas storage component of the air suspension. Its main function is to store a certain volume and pressure of gas to ensure that the air suspension vehicle can quickly complete the lifting action. It is mostly made of aluminum alloy to ensure sufficient strength, light weight and corrosion resistance. However, its layout is a headache, especially now that the front and rear overhangs of electric vehicles are shortened as much as possible, and the increased wheelbase is also required for the huge battery pack. In this way, it is more difficult to arrange the gas tank in a small space. Summary of the invention

[0003] The embodiments of the present application provide an air suspension crossbeam and a subframe to solve the problem in the related art that it is difficult to arrange an air storage tank in a narrow space.

[0004] In a first aspect, an air suspension cross beam is provided, comprising:

[0005] A crossbeam body, wherein a gas storage space for storing gas is formed inside the crossbeam body, and a first gas inlet and outlet are provided on the crossbeam body;

[0006] A partition is arranged in the beam body, the length extension direction of the partition is the same as the length extension direction of the beam body, and the gas storage space is divided into two air chambers, the two air chambers are connected through a second gas inlet and outlet, and one of the air chambers is connected to the first gas inlet and outlet.

[0007] In some embodiments, the first gas inlet and outlet are close to one end of the beam body, and the second gas inlet and outlet are close to the other end of the beam body.

[0008] In some embodiments, the second gas inlet and outlet are opened on the partition, or the second gas inlet and outlet are formed between one end of the partition and one end of the beam body.

[0009] In some embodiments, a drying filter is provided on the second gas inlet and outlet.

[0010] In some embodiments, the partition is recessed at a position corresponding to the first gas inlet and outlet, and a gas purge area is formed, and the gas purge area is in an arc shape.

[0011] In some embodiments, the surface of the partition is recessed to form a gas guide channel, one end of the gas guide channel is connected to the gas purge area, and the other end extends toward the second gas inlet and outlet.

[0012] In some embodiments, the cross beam body is a closed tube, and a first overlapping structure for connecting to a longitudinal beam of a sub-frame is formed at an end of the cross beam body.

[0013] In a second aspect, a subframe is provided, comprising:

[0014] two subframe longitudinal members arranged at intervals;

[0015] At least two air suspension cross beams as described above, both ends of the cross beam body are respectively connected to the two sub-frame longitudinal beams.

[0016] In some embodiments, the subframe further includes an air pump assembly and a gas pipeline, one end of the gas pipeline is connected to the air pump assembly, and the other end is connected to the first gas inlet and outlet of the crossbeam body.

[0017] In some embodiments, there is one air pump assembly, the gas pipeline includes a first pipeline and a second pipeline, the gas storage space of each beam body is connected in series through the second pipeline, and the first gas inlet and outlet of one of the two outermost beam bodies is connected to the air pump assembly through the first pipeline.

[0018] The beneficial effects of the technical solution provided by this application include:

[0019] The embodiment of the present application provides an air suspension crossbeam and a subframe. The crossbeam body provided in the embodiment of the present application has a partition arranged in the gas storage space inside it. On the one hand, since the crossbeam body has the gas storage space, the crossbeam and the gas storage tank are integrated into one. The crossbeam body can not only play the role of the original subframe crossbeam, but also use the gas storage space to realize the gas storage function and play the role of the gas storage tank. In this way, there is no need to provide a separate gas storage tank, nor is there a need to arrange the gas storage tank separately, thus avoiding the situation where it is difficult to arrange the gas storage tank in a small space. On the other hand, since the crossbeam and the gas storage tank are two-in-one to form the above-mentioned crossbeam body, there is no need to provide a separate gas storage tank, which also achieves lightweight On the third aspect, when the partition is arranged in the gas storage space, the length extension direction of the partition is the same as the length extension direction of the crossbeam body, which can increase the strength of the crossbeam body, thereby improving the overall strength and mode of the sub-frame. Even in the event of a collision, the impact resistance of the sub-frame can be improved, the battery pack can be protected from impact, the safety performance of the vehicle can be improved, the damage probability of the sub-frame can be reduced, and the maintenance cost can be reduced. At the same time, the improvement of the mode can effectively improve the NVH characteristics of the motor; on the fourth aspect, the gas storage space is divided into two air chambers by a partition, and the two air chambers are connected through a second gas inlet and outlet. The advantage is that the gas movement path is increased and an air flow maze structure is formed, thereby reducing the noise generated during charging and discharging.

[0020] In addition, in the era of electric vehicles, in order to achieve lightweight, the subframe is usually made of a hollow aluminum alloy structure. The middle crossbeam is made of hollow extruded aluminum alloy, and the longitudinal beams on both sides are mostly hollow castings. The middle crossbeam and the longitudinal beams on both sides are connected into a whole by welding. Since the present application adds a partition inside the crossbeam and adds the first gas inlet and outlet, it has no effect on the original manufacturing process of the subframe, fully utilizes the double crossbeam structure of the original subframe, and maintains the original welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of an air suspension crossbeam provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of a disassembled crossbeam body and a drying filter provided in an embodiment of the present application;

[0024] Figure 3A schematic plan view of a partition provided in an embodiment of the present application;

[0025] Figure 4 An exploded view of a subframe provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of a subframe provided in an embodiment of the present application.

[0027] In the figure: 1. crossbeam body; 10. first gas inlet and outlet; 11. air chamber; 12. second gas inlet and outlet; 13. first lap joint structure; 14. tube end cover; 15. third gas inlet and outlet; 2. partition; 20. gas purge area; 21. air guide channel; 3. drying filter; 4. subframe longitudinal beam; 40. second lap joint structure; 5. air pump assembly; 6. gas pipeline; 61. first pipeline; 62. second pipeline. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] The embodiment of the present application provides an air suspension cross beam, which can solve the problem in the related art that it is difficult to arrange an air storage tank in a small space.

[0030] See also Figure 1 , Figure 2 As shown, an air suspension beam provided in an embodiment of the present application includes a beam body 1 and a partition 2. An air storage space is formed inside the beam body 1, and the air storage space is used to store gas. A first gas inlet and outlet 10 is provided on the beam body 1; the partition 2 is provided in the beam body 1, and the length extension direction of the partition 2 is the same as the length extension direction of the beam body 1, and the air storage space is divided into two air chambers 11. The two air chambers 11 are connected through a second gas inlet and outlet 12, and one of the air chambers 11 is connected to the first gas inlet and outlet 10.

[0031] The crossbeam body 1 provided in the embodiment of the present application has a partition 2 arranged in the gas storage space inside it. On the one hand, since the crossbeam body 1 has the gas storage space, the crossbeam and the gas storage tank are integrated into one, and the crossbeam body 1 can not only play the role of the original subframe crossbeam, but also use the gas storage space to realize the gas storage function and play the role of the gas storage tank, so that there is no need to provide a separate gas storage tank, nor is there a need to arrange the gas storage tank separately, thus avoiding the situation where it is difficult to arrange the gas storage tank in a small space; on the other hand, since the crossbeam and the gas storage tank are two-in-one to form the above-mentioned crossbeam body 1, there is no need to provide a separate gas storage tank, which also achieves the purpose of lightweighting and reducing costs; on the third hand When the partition 2 is arranged in the gas storage space, the length extension direction of the partition 2 is the same as the length extension direction of the crossbeam body 1, which can increase the strength of the crossbeam body 1, and then improve the overall strength and mode of the subframe. Even in the event of a collision, the impact resistance of the subframe can be improved, the battery pack can be protected from impact, the safety performance of the vehicle can be improved, the damage probability of the subframe can be reduced, and the maintenance cost can be reduced. At the same time, the improvement of the mode can effectively improve the NVH characteristics of the motor; fourthly, the partition 2 is used to divide the gas storage space into two air chambers 11, and the two air chambers 11 are connected through the second gas inlet and outlet 12. The advantage is that the gas movement path is increased and an air flow maze structure is formed, thereby reducing the noise generated during charging and discharging.

[0032] In addition, in the era of electric vehicles, in order to achieve lightweight, the subframe is usually made of a hollow aluminum alloy structure. The middle crossbeam is made of hollow extruded aluminum alloy, and the longitudinal beams on both sides are mostly hollow castings. The middle crossbeam and the longitudinal beams on both sides are connected into a whole by welding. Since the present application adds a partition inside the crossbeam and adds the first gas inlet and outlet 10, it has no effect on the original manufacturing process of the subframe, fully utilizes the double crossbeam structure of the original subframe, and maintains the original welding process.

[0033] The partition 2 can be arranged vertically or in a Figure 1 Arranged at an angle.

[0034] To improve the effect of reducing the noise generated during inflation and deflation, see Figure 1 As shown, in some preferred embodiments, the first gas inlet and outlet 10 is close to one end of the beam body 1 , and the second gas inlet and outlet 12 is close to the other end of the beam body 1 .

[0035] In this embodiment, the distance between the first gas inlet and outlet 10 and the second gas inlet and outlet 12 is increased, one of which is as close to one end of the beam body 1 as possible, and the other is as close to the other end of the beam body 1 as possible. After the gas enters an air chamber 11 from the first gas inlet and outlet 10, it moves along the length direction of the beam body 1, and then enters another air chamber 11 from the second gas inlet and outlet 12. After changing direction, it continues to move along the length direction of the beam body 1, so that the gas moves along a longer path in the air flow maze structure, thereby improving the effect of reducing the noise generated during inflation and deflation.

[0036] There are many optional ways to form the position of the second gas inlet and outlet 12. For example, as an example, the second gas inlet and outlet 12 is directly opened on the partition 2. For example, as another example, the second gas inlet and outlet 12 is formed between one end of the partition 2 and one end of the beam body 1. For details, see Figure 2 As shown, the beam body 1 includes a tube portion, both ends of which are provided with tube end covers 14 , and a groove is formed at the end of the partition plate 2 , which abuts against the tube end cover 14 and forms a second gas inlet and outlet 12 between the groove and the tube end cover 14 .

[0037] In humid weather, such as rainy days, the gas will carry water vapor or rainwater, which will enter the air chamber 11 and become water and remain in the air chamber 11. After a period of use, when there is more water, it will occupy the volume of the air chamber 11, reduce the storage capacity of the air chamber 11 for gas, and reduce the use effect of the air suspension. Therefore, in order to alleviate this situation, see Figure 2 As shown, in some preferred embodiments, a drying filter 3 is provided on the second gas inlet and outlet 12 to dry water vapor and filter impurities inhaled from the atmosphere.

[0038] The above-mentioned drying filter 3 can adopt relatively mature products, such as Figure 2 In the figure, the drying filter 3 has a shell, one end of which is provided with a bayonet, and is connected to the partition 2 by means of the bayonet. The shell has a through hole, and multiple filter layers are assembled on the through hole.

[0039] Since the air suspension will be used for a long time and frequently, air pressure will be generated during the inflation process, which will impact the partition 2. In order to alleviate the impact on the partition 2 during the inflation process and increase the service life of the partition 2, see Figure 3 As shown, in some preferred embodiments, the partition plate 2 is recessed at a position corresponding to the first gas inlet and outlet 10, and a gas purge area 20 is formed, and the gas purge area 20 is in an arc shape.

[0040] The gas purge area 20 is an arc-shaped structure formed by the depression on the surface of the partition 2. When inflated, the curved surface of the arc-shaped structure can guide and reverse the airflow to prevent the airflow from directly hitting the partition. Therefore, the impact on the partition 2 during the inflation process can be alleviated, thereby increasing the service life of the partition 2.

[0041] Further, see Figure 3 As shown, the surface of the partition plate 2 is recessed to form a gas guide channel 21, one end of the gas guide channel 21 is connected to the gas purge area 20, and the other end extends toward the second gas inlet and outlet 12. The gas guide channel 21 is provided to quickly guide the gas flow to the second gas inlet and outlet 12 and enter another gas chamber 11.

[0042] To install the air suspension cross member, see Figure 4 As shown, the cross beam body 1 is a closed tube, and a first overlap structure 13 for connecting the sub-frame longitudinal beam 4 is formed at the end of the cross beam body 1. Similarly, a second overlap structure 40 is formed at the end of the sub-frame longitudinal beam 4. The first overlap structure 13 is inserted into the second overlap structure 40 and welded together, so that the sub-frame longitudinal beam 4 and the cross beam body 1 become a whole.

[0043] See also Figure 4 and Figure 5 As shown, the embodiment of the present application further provides a subframe, which includes two subframe longitudinal beams 4 and at least two air suspension cross beams as in any of the above embodiments, the two subframe longitudinal beams 4 are arranged at intervals, and the two subframe longitudinal beams 4 form a left subframe longitudinal beam and a right subframe longitudinal beam; each air suspension cross beam is arranged at intervals, and the two ends of the cross beam body 1 are respectively connected to the two subframe longitudinal beams 4.

[0044] The subframe provided in the embodiment of the present application utilizes the above-mentioned air suspension crossbeam, and a partition 2 is set in the gas storage space inside the crossbeam main body 1. On the one hand, since the crossbeam main body 1 has the gas storage space, the crossbeam and the gas tank are integrated into one. The crossbeam main body 1 can not only play the role of the original subframe crossbeam, but also utilize the gas storage space to realize the gas storage function and play the role of the gas tank. In this way, there is no need to provide a separate gas tank, nor is there a need to arrange the gas tank separately, thus avoiding the situation where it is difficult to arrange the gas tank in a small space. On the other hand, since the crossbeam and the gas tank are two-in-one to form the above-mentioned crossbeam main body 1, there is no need to provide a separate gas tank, which also achieves lightweight and cost reduction. Purpose: Thirdly, when the partition 2 is arranged in the gas storage space, the length extension direction of the partition 2 is the same as the length extension direction of the crossbeam body 1, which can increase the strength of the crossbeam body 1, thereby improving the overall strength and mode of the subframe. Even in the event of a collision, the impact resistance of the subframe can be improved, the battery pack can be protected from impact, the safety performance of the vehicle can be improved, the damage probability of the subframe can be reduced, and the maintenance cost can be reduced. At the same time, the improvement of the mode can effectively improve the NVH characteristics of the motor; Fourthly, the partition 2 is used to divide the gas storage space into two air chambers 11, and the two air chambers 11 are connected through the second gas inlet and outlet 12. The advantage is that the gas movement path is increased and an air flow maze structure is formed, thereby reducing the noise generated during charging and discharging.

[0045] See also Figure 5 As shown, the subframe further includes an air pump assembly 5 and a gas pipeline 6, one end of the gas pipeline 6 is connected to the air pump assembly 5, and the other end is connected to the first gas inlet and outlet 10 of the crossbeam body 1. The air suspension crossbeam is inflated and deflated through the air pump assembly 5 and the gas pipeline 6.

[0046] In the present application, each crossbeam body 1 can be individually connected to an air pump assembly 5 through a gas pipeline 6 to achieve the inflation and deflation of the air suspension crossbeam.

[0047] However, if the above arrangement is adopted, higher requirements are placed on the arrangement space of the inflation pump assembly 5 and the gas pipeline 6, and the production cost is also increased.

[0048] Therefore, in order to simplify the product structure, reduce manufacturing costs, and reduce layout space, see Figure 5 As shown, in some preferred embodiments, there is only one air pump assembly 5, the gas pipeline 6 includes a first pipeline 61 and a second pipeline 62, the gas storage space of each beam body 1 is connected in series through the second pipeline 62, and the first gas inlet and outlet 10 of one of the two outermost beam bodies 1 is connected to the air pump assembly 5 through the first pipeline 61.

[0049] Specifically, among all the beam bodies 1, only one first gas inlet and outlet 10 is required in one of the beam bodies 1, and a third gas inlet and outlet 15 is provided on the remaining beam bodies 1. The first gas inlet and outlet 10 and the third gas inlet and outlet 15 are respectively connected to the two gas chambers 11 of the beam body 1.

[0050] Among two adjacent beam bodies 1, the third gas inlet and outlet 15 of one beam body 1 is connected to the first gas inlet and outlet 10 of the other beam body 1 through the second pipeline 62, thereby realizing the series connection of the gas storage space of all beam bodies 1. Finally, among the two outermost beam bodies 1, one beam body 1 has only the first gas inlet and outlet 10, and the other beam body 1 has both the first gas inlet and outlet 10 and the third gas inlet and outlet 15. For this beam body 1, its first gas inlet and outlet 10 is connected to the inflation pump assembly 5 through the first pipeline 61.

[0051] By adopting this arrangement, one air pump assembly 5 can be used to inflate and deflate all air suspension crossbeams, which greatly simplifies the product structure, reduces manufacturing costs, and reduces layout space.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An air suspension crossbeam, characterized in that: It includes: A crossbeam body (1) is formed with a gas storage space for storing gas inside, and a first gas inlet and outlet (10) is provided on the crossbeam body (1); a partition (2) disposed in the cross beam body (1), the length extension direction of the partition (2) being the same as the length extension direction of the cross beam body (1), and dividing the gas storage space into two gas chambers (11), the two gas chambers (11) being connected via a second gas inlet and outlet (12), and one of the gas chambers (11) being connected to the first gas inlet and outlet (10); The partition plate (2) is recessed at a position corresponding to the first gas inlet and outlet (10), and a gas purge area (20) is formed, and the gas purge area (20) is in the shape of an arc surface; The surface of the partition plate (2) is recessed to form a gas guide channel (21); one end of the gas guide channel (21) is connected to the gas purge zone (20), and the other end extends toward the second gas inlet and outlet (12).

2. The air suspension cross beam according to claim 1, characterized in that: The first gas inlet and outlet (10) is close to one end of the cross beam body (1), and the second gas inlet and outlet (12) is close to the other end of the cross beam body (1).

3. The air suspension cross beam according to claim 1, characterized in that: The second gas inlet and outlet (12) is opened on the partition (2), or the second gas inlet and outlet (12) is formed between one end of the partition (2) and one end of the crossbeam body (1).

4. The air suspension cross beam according to claim 1, characterized in that: A drying filter (3) is provided on the second gas inlet and outlet (12).

5. The air suspension cross beam according to claim 1, characterized in that: The cross beam body (1) is a closed tube, and a first overlapping structure (13) for connecting to a sub-frame longitudinal beam (4) is formed at the end of the cross beam body (1).

6. A subframe, characterized in that: It includes: two auxiliary frame longitudinal beams (4) arranged at intervals; At least two air suspension cross beams according to any one of claims 1 to 5, wherein two ends of the cross beam body (1) are respectively connected to the two subframe longitudinal beams (4).

7. The subframe according to claim 6, characterized in that: The sub-frame also includes an air pump assembly (5) and a gas pipeline (6); one end of the gas pipeline (6) is connected to the air pump assembly (5), and the other end is connected to the first gas inlet and outlet (10) of the crossbeam body (1).

8. The subframe according to claim 7, characterized in that: The air pump assembly (5) has one gas pipeline (6) comprising a first pipeline (61) and a second pipeline (62). The gas storage spaces of the cross beam bodies (1) are connected in series via the second pipeline (62). The first gas inlet and outlet (10) of one of the two cross beam bodies (1) located at the outermost sides is connected to the air pump assembly (5) via the first pipeline (61).

Images