Air suspension and vehicle

Abstract

The utility model provides an air suspension and a vehicle, and relates to the technical field of vehicles. The air suspension can comprise a support and a sealing cover, one end of the support is connected with the bag skin, and a first channel is formed in the support. The sealing cover is provided with a second channel, an air pipe connector is further arranged above the sealing cover and can be externally connected with an air pipe, and air is conveyed into the first channel through the second channel. The upper portion of the second channel communicates with the cabin, the lower side of the second channel communicates with the first channel, and then gas is introduced into the first channel through the second channel and then introduced into the capsule skin. According to the air suspension, air enters the first channel in the support from the sealing cover, then enters the bag skin and enters from one side of a cabin, so that the situation that the channel communicated with the outside is arranged at the support is avoided, and the situation that the air channel is connected from the wheel bag side (the side edge of the support), so that the air cannot enter the bag skin is avoided. And the service life of the gas pipeline and the joint is shortened due to soil erosion and stone impact.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an air suspension and vehicle. Background Technology

[0002] Air suspension systems are widely used in mid-to-high-end vehicles due to their superior ride comfort and vehicle handling. The air circuit structure, as a core component of the air suspension system, directly impacts its performance. Current air spring air circuit structures typically involve an external air hose entering the upper support air circuit before reaching the main air chamber of the air spring. The air spring and upper support are integrated via a clamping ring, and the upper support is generally made of nylon / glass fiber composite material (PA6+GF50). Balancing lightweight design with the internal air circuit layout increases overall cost. Furthermore, the air hose connections are inconvenient to install and remove (located at the wheel well; during final assembly, these connections require high-level work, and maintenance requires tire removal, increasing labor time). These issues urgently need improvement. Utility Model Content

[0003] One objective of the first aspect of this utility model is to provide an air suspension that solves the problem in the prior art where the air pipes at the support point lead to a decrease in the lifespan of the air pipes.

[0004] The second aspect of this utility model aims to solve the problem of difficult maintenance of air suspension systems.

[0005] Specifically, this utility model provides an air suspension system, comprising:

[0006] A support, one end of which is connected to the sac skin, and a first channel communicating with the sac skin is provided in the middle of the support; and

[0007] A sealing cap is disposed at the end of the first channel away from the bladder skin; a second channel is provided at the sealing cap, the second channel communicating with the first channel to introduce external gas into the bladder skin through the second channel and the first channel.

[0008] Optionally, a bushing assembly is provided in the first channel; the bushing assembly is located below the sealing cover; the bushing assembly is provided with a first through hole for the piston rod to pass through and connect the piston rod to the support;

[0009] The bushing assembly is also provided with at least one second through hole, which communicates with the second channel so that gas in the second channel can flow through the second through hole when passing through the bushing assembly.

[0010] Optionally, the bushing assembly includes:

[0011] The inner core plate is provided with the first through hole and at least one second through hole located on the side of the first through hole;

[0012] Bushing, which abuts against the outer periphery of the inner core plate; and

[0013] The outer tube abuts against the outer periphery of the bushing and the inner wall of the first channel.

[0014] Optionally, the bushing has a circumferentially extending groove on its inner side, the inner core plate is disposed in the groove, and the second through hole is exposed.

[0015] Optionally, the inner core plate, the bushing, and the outer tube are integrally formed; the inner wall of the first through hole abuts against the piston rod, and the outer tube abuts against the support.

[0016] Optionally, a protrusion extending toward the center of the first channel is formed on the inner sidewall of the support, the protrusion being located below the bushing assembly to support the bushing assembly; a predetermined distance is provided between the protrusion and the piston rod to allow gas flow.

[0017] Optionally, it also includes a buffer element disposed below the protrusion, and having a third through hole inside for the piston rod to pass through; the buffer element and the side wall of the second channel and / or the inner side wall of the third through hole of the buffer element and the outer wall of the piston rod have a gas flow channel for gas flow.

[0018] Optionally, an airflow groove is provided on the upper side of the buffer to form a gas flow channel when the buffer and the protrusion come into contact with each other.

[0019] Optionally, the cross-sectional dimension of the third through hole of the buffer is larger than the cross-sectional dimension of the piston rod to form a gas flow channel.

[0020] Optionally, there is a preset gap between the inner wall of the third through hole and the outer wall of the piston rod, and the preset gap size is 0.75 to 2 mm.

[0021] Optionally, a first groove is formed on the outer wall of the buffer member;

[0022] The air suspension also includes a limiting ring, which is sleeved on the first groove to compress and limit the buffer.

[0023] Optionally, a sealing ring is also included, disposed between the sealing cap and the inner wall of the first channel to prevent gas in the first channel from flowing out between the sealing cap and the inner wall of the first channel.

[0024] Optionally, a step and a second groove are also provided on the inner sidewall of the first channel;

[0025] The air suspension also includes a retaining ring, which, when the sealing cover is located at the second channel, limits the sealing cover by placing the retaining ring at the second groove and using the retaining ring and the step.

[0026] Optionally, the retaining ring has a notch, and the retaining ring is provided with a fourth through hole at the end near the notch. The retaining ring can shrink in size when subjected to external force and return to its original size when the external force disappears, so as to place the retaining ring in the second groove.

[0027] In particular, this utility model also provides a vehicle including any of the air suspensions described above.

[0028] This design features a sealing cap on the bearing, with a second channel on the cap. Above the cap is an air pipe interface, allowing connection to an external air pipe to supply gas to the first channel via the second channel. The second channel connects to the engine compartment at the top and to the first channel at the bottom, thus introducing gas into the first channel and then into the bearing skin. Ultimately, the gas enters the bearing from the engine compartment, avoiding the need for an external connection on the side of the bearing. This avoids the problem of reduced lifespan of the air pipes and connectors due to soil erosion and stone impacts caused by gas access from the wheel well side (the side of the bearing). Furthermore, since the air intake is located at the sealing cap, repairs can be performed without removing the tire; simply opening the engine compartment cover facilitates assembly, disassembly, and maintenance. Additionally, the absence of an additional air passage at the bearing reduces manufacturing costs.

[0029] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0030] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 This is a schematic exploded view of an air suspension according to a specific embodiment of the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram of an air suspension according to a specific embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional schematic diagram of an air suspension according to a specific embodiment of the present invention;

[0034] Figure 4 This is a schematic exploded view of a bushing assembly according to a specific embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] Air suspension -100;

[0037] Support-200; First channel-201; Protrusion-202; Upper step-203; Step-204; Second groove-205;

[0038] Sealing cap - 300; Second channel - 301; Air tube interface - 302; Groove - 303;

[0039] Skin-400; Crimping ring-401;

[0040] Bushing assembly - 500; First through hole - 501; Second through hole - 502; Inner core plate - 503; Bushing - 504; Outer tube - 505; Groove - 506;

[0041] Piston rod -600;

[0042] Buffer component - 700; Third through hole - 701; Airflow groove - 702; First groove - 703; Limiting ring - 704; Lower step - 705;

[0043] Sealing ring -800;

[0044] Retaining ring - 900; Notch - 901; Fourth through hole - 902. Detailed Implementation

[0045] In the description of this embodiment, it should be understood that the terms "length", "width", "height", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", "front", "back", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0046] As a specific embodiment of this utility model, such as Figure 1-3As shown, this embodiment provides an air suspension 100, which may include a support 200 and a sealing cap 300. One end of the support 200 is connected to the bladder 400, and a first channel 201 communicating with the bladder 400 is provided in the middle of the support 200. The sealing cap 300 is located at the end of the first channel 201 away from the bladder 400. A second channel 301 is provided at the sealing cap 300, communicating with the first channel 201 to introduce external air into the bladder 400 through the second channel 301 and the first channel 201.

[0047] Specifically, in this embodiment, a sealing cover 300 is provided on the support 200. One end of the support 200 is connected to the bladder 400, and a first channel 201 is provided inside. A second channel 301 is provided on the sealing cover 300, and a tracheal inlet 302 is also provided above the sealing cover 300. The tracheal inlet 302 can be connected to an external tracheal tube, and gas is delivered into the first channel 201 through the second channel 301. The second channel 301 is connected to the engine compartment at the top and to the first channel 201 at the bottom, thereby introducing gas into the first channel 201 through the second channel 301, and then into the bladder 400. Finally, the gas is introduced into the support 200 from the engine compartment, avoiding the problem of the channel connecting to the outside being located on the side of the support 200. This avoids the problem of reduced service life of the tracheal tube and connectors due to soil erosion and stone impact caused by the gas channel being connected from the wheel bag side (the side of the support 200). Furthermore, in this embodiment, since the air intake channel is located at the sealing cover 300, if damage occurs, it is not necessary to remove the tire; simply opening the engine hood allows for easy removal and repair, making assembly, disassembly, and maintenance convenient. Additionally, since no additional air passage is needed at the support 200, manufacturing costs for the support 200 are saved.

[0048] As a specific embodiment of this utility model, such as Figure 1-4 As shown, a bushing assembly 500 is provided in the first channel 201 of this embodiment. The bushing assembly 500 is located below the sealing cover 300. The bushing assembly 500 is provided with a first through hole 501 for the piston rod 600 to pass through and connect the piston rod 600 to the support 200. At least one second through hole 502 is also provided at the bushing assembly 500, and the second through hole 502 communicates with the second channel 301 so that gas in the second channel 301 can flow through the second through hole 502 when passing through the bushing assembly 500.

[0049] Specifically, in this embodiment, a bushing assembly 500 is provided within the first through hole 501, and one end of the piston rod 600 is fixed within the first channel 201 using the bushing assembly 500. Specifically, the bushing assembly 500 has a first through hole 501, through which one end of the piston rod 600 passes and is then tightened using a nut. In this embodiment, the bushing assembly 500 may also have a second through hole 502, which allows gas to flow through both sides of the bushing assembly 500. Specifically, in this embodiment, the bushing assembly 500 preferably has multiple second through holes 502, and the diameter of each second through hole 502 can be approximately 4 mm. Through the second through holes 502, gas can flow smoothly from the top to the bottom of the bushing assembly 500.

[0050] As a specific embodiment of this utility model, the bushing assembly 500 may include an inner core plate 503, a bushing 504, and an outer tube 505. The inner core plate 503 is provided with a first through hole 501 and at least one second through hole 502 located on the side of the first through hole 501. The bushing 504 abuts against the outer periphery of the inner core plate 503. The outer tube 505 abuts between the outer periphery of the bushing 504 and the inner sidewall of the first channel 201.

[0051] Specifically, in this embodiment, the inner core plate 503 and the outer tube 505 are both made of metal, while the bushing 504 is made of rubber. The bushing assembly 500 in this embodiment can not only connect the piston rod 600 to the support 200, but also isolate vibration between the support 200 and the piston rod 600.

[0052] More specifically, in this embodiment, the bushing 504 has a groove 506 extending circumferentially on its inner side, and the inner core plate 503 is partially disposed in the groove 506, exposing the second through hole 502 to the outside, so as to avoid the second through hole 502 being blocked and causing poor gas flow.

[0053] Specifically, in this embodiment, the inner core plate 503, bushing 504, and outer tube 505 can be integrally formed. The inner wall of the first through hole 501 abuts against the piston rod 600, and the outer tube 505 abuts against the support 200. This design prevents the piston rod 600 from loosening within the support 200 and further increases the vibration isolation effect.

[0054] In a specific embodiment of this utility model, a protrusion 202 extending toward the center of the first channel 201 is formed on the inner wall of the support 200. The protrusion 202 is located below the bushing assembly 500 to support the bushing assembly 500. A preset distance is maintained between the protrusion 202 and the piston rod 600 to allow for gas flow.

[0055] Specifically, the protrusion 202 in this embodiment can support the bushing assembly 500 and prevent the bushing assembly 500 and the piston rod 600 from sliding downward.

[0056] As a specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the air suspension 100 of this embodiment may further include a buffer 700, which is disposed below the protrusion 202 and has a third through hole 701 inside for the piston rod 600 to pass through. Gas flow channels are provided between the buffer 700 and the side wall of the second channel 301 and / or between the inner side wall of the third through hole 701 of the buffer 700 and the outer wall of the piston rod 600 for gas flow.

[0057] Specifically, the buffer 700 in this embodiment is mainly used to buffer the shock absorber when it is subjected to an upward force and moves to contact the buffer 700.

[0058] Since the buffer 700 abuts against the protrusion 202, a gas flow channel needs to be formed between the buffer 700 and the inner wall of the first channel 201 to prevent the gas from not being able to flow from the top of the buffer 700 to the bottom of the bladder 400, or from flowing too slowly, causing the bladder 400 to inflate too slowly, thus resulting in poor shock absorption.

[0059] Specifically, an airflow groove 702 is provided on the upper side of the buffer 700 to form a gas flow channel when the buffer 700 and the protrusion 202 come into contact with each other.

[0060] Specifically, the airflow slots 702 in this embodiment may include multiple slots, and the number and size of the airflow slots 702 can be determined according to the actual situation.

[0061] Specifically, in this embodiment, the cross-sectional dimension of the third through hole 701 of the buffer member 700 is larger than the cross-sectional dimension of the piston rod 600 to form a gas flow channel. Since the cross-sectional dimension of the third through hole 701 of the buffer member 700 is larger than the cross-sectional dimension of the piston rod 600, there must be a gap for gas flow between the inner wall of the third through hole 701 and the piston rod 600.

[0062] More specifically, there is a preset gap between the inner wall of the third through hole 701 and the outer wall of the piston rod 600, with the preset gap size being 0.75 to 2 mm.

[0063] Specifically, in this embodiment, the cross-section of the third through hole 701 can be circular, and the piston rod 600 is also circular. There can be a preset gap between the inner wall of the third through hole 701 and the piston rod 600. The size of the preset gap can be 0.75mm, 1mm, 1.25mm, 1.5mm, 1.75mm or 2mm.

[0064] As a specific embodiment of this utility model, the outer wall of the buffer member 700 in this embodiment has a first groove 703. The air suspension 100 may also include a limiting ring 704, which is sleeved at the first groove 703 to compress and limit the buffer member 700.

[0065] Specifically, in this embodiment, a first groove 703 is formed on the outer side of the buffer member 700, and a limiting ring 704 is disposed in the first groove 703. When the buffer member 700 is subjected to force in the axial direction, the strength of the buffer member 700 can be increased due to the effect of the limiting ring 704, thereby compressing and limiting it.

[0066] Specifically, in this embodiment, the lower cross section of the first groove 703 of the buffer member 700 is formed into a curved hook shape, so it is easy to deform when subjected to the pressure of the shock absorber below. The compression of the buffer member 700 can be limited to the position of the limiting ring 704 by the limiting ring 704. While buffering, it also avoids the buffer member 700 from being over-compressed and damaged.

[0067] Specifically, in this embodiment, the buffer 700 is provided with a downward step 705, while the inner sidewall of the first channel 201 is provided with an upward step 203. When the buffer 700 is installed at the manufacturing location, the upper step 203 and the lower step 705 cooperate with each other to connect the buffer 700 to the manufacturing location, and the top of the buffer 700 abuts against the bottom of the protrusion 202.

[0068] As a specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the air suspension 100 of this embodiment may also include a sealing ring 800 disposed between the sealing cover 300 and the inner wall of the first channel 201 to prevent gas in the first channel 201 from flowing out between the sealing cover 300 and the inner wall of the first channel 201.

[0069] Specifically, in this embodiment, a groove 303 can be provided on the outer periphery of the sealing cover 300, and the sealing ring 800 can be placed in the groove 303 and then sealed with the inner sidewall of the first channel 201.

[0070] Of course, in other embodiments, a groove (not shown in the figure) can be provided on the inner sidewall of the first channel 201, the sealing ring 800 can be placed in the groove, and the sealing cover 300 can be sealed and fitted with the inner sidewall of the first channel 201.

[0071] As a specific embodiment of this utility model, such as Figure 2 and Figure 3As shown, the inner wall of the first channel 201 in this embodiment is further provided with a step 204 and a second groove 205. The air suspension 100 may also include a retaining ring 900, which limits the sealing cover 300 by setting the retaining ring 900 in the second groove 205 after the sealing cover 300 is set in the second channel 301.

[0072] Specifically, in this embodiment, the retaining ring 900 is set at the second groove 205. The lower part of the retaining ring 900 abuts against the upper part of the sealing cover 300, and the lower part of the sealing cover 300 abuts against the step 204. This allows the sealing cover 300 to be positioned between the step 204 and the retaining ring 900, preventing it from loosening during operation.

[0073] More specifically, such as Figure 2 and Figure 3 As shown, the retaining ring 900 of this embodiment has a notch 901. The retaining ring 900 is provided with a fourth through hole 902 at the end near the notch 901. The retaining ring 900 can shrink in size when subjected to external force and restore its original size when the external force disappears, so as to place the retaining ring 900 in the second groove 205.

[0074] Specifically, the retaining ring 900 can be made of a material with a certain degree of elasticity. Using an external mechanism, a force is applied to the retaining ring 900 through the fourth through hole 902 to reduce the notch 901 of the retaining ring 900, thereby placing the retaining ring 900 in the first channel 201. When it reaches the second groove 205, the force applied to the retaining ring 900 can be released, and the retaining ring 900 returns to its original size, thus locking into the second groove 205 and securing the sealing cover 300.

[0075] Specifically, such as Figures 1-4 As shown, the specific structure of the air suspension 100 and the sequence of air flow in this embodiment are as follows:

[0076] The air suspension 100 of this embodiment includes a support 200, a sealing cover 300, a sealing ring 800, a retaining ring 900, a bushing assembly 500, a buffer 700, and a bladder 400. The bladder 400 is connected to the support 200 via a clamping ring 401. A first channel 201 is provided inside the support 200, which communicates with the interior of the bladder 400. The sidewall of the first channel 201 is provided with a second groove 205, a step 204, a protrusion 202, and an upper step 203 from top to bottom. The retaining ring 900 is disposed in the second groove 205, and the lower side of the sealing cover 300 abuts against the step 204, while the upper side abuts against the retaining ring 900, thereby limiting the axial movement of the sealing cover 300.

[0077] A second channel 301 is provided at the sealing cover 300. The second channel 301 is connected to external gas via a gas pipe interface 302. The sealing cover 300 has a space inside, so that it forms a first air chamber when it is set at the support 200. Gas flows into the first air chamber through the second channel 301. A sealing ring 800 is also provided between the outer side of the sealing cover 300 and the inner sidewall of the first channel 201 to prevent external gas from flowing into the interior.

[0078] The bushing assembly 500 is positioned between the protrusion 202 and the sealing cap 300. The piston rod 600 passes through the first through hole 501 of the bushing assembly 500 and is then secured with fasteners. A second through hole 502 is provided at the bushing assembly 500 to allow gas to flow from the upper first gas chamber of the bushing assembly 500 to the lower part of the bushing assembly 500.

[0079] The buffer 700 is located below the protrusion 202, and the lower step 705 on the buffer cooperates with the upper step 203 on the inner sidewall of the first channel 201, so that the buffer is fixedly connected to the support 200.

[0080] An airflow groove 702 is provided on the upper part and the outer side of the buffer 700. Gas flows from the upper part of the buffer 700 to the lower part through the airflow groove 702, and then reaches the interior of the skin 400.

[0081] There is also a gap between the buffer 700 and the piston rod 600 so that gas can flow through the gap from above the buffer 700 into the bladder 400.

[0082] As a specific embodiment of the present invention, this embodiment also provides a vehicle, which may include the air suspension 100 described above.

[0083] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An air suspension system, characterized in that, include: A support, one end of which is connected to the sac skin, and a first channel communicating with the sac skin is provided in the middle of the support; and A sealing cap is disposed at the end of the first channel away from the bladder skin; a second channel is provided at the sealing cap, the second channel communicating with the first channel to introduce external gas into the bladder skin through the second channel and the first channel.

2. The air suspension according to claim 1, characterized in that, A bushing assembly is provided in the first channel; the bushing assembly is located below the sealing cover; the bushing assembly is provided with a first through hole for the piston rod to pass through and connect the piston rod to the support; The bushing assembly is also provided with at least one second through hole, which communicates with the second channel so that gas in the second channel can flow through the second through hole when passing through the bushing assembly.

3. The air suspension according to claim 2, characterized in that, The bushing assembly includes: The inner core plate is provided with the first through hole and at least one second through hole located on the side of the first through hole; Bushing, which abuts against the outer periphery of the inner core plate; and The outer tube abuts against the outer periphery of the bushing and the inner wall of the first channel.

4. The air suspension according to claim 3, characterized in that, The bushing has a circumferentially extending groove on its inner side, the inner core plate is disposed in the groove, and the second through hole is exposed.

5. The air suspension according to claim 3, characterized in that, The inner core plate, the bushing, and the outer tube are integrally formed; the inner wall of the first through hole abuts against the piston rod, and the outer tube abuts against the support.

6. The air suspension according to claim 2, characterized in that, The inner wall of the first channel of the support has a protrusion extending toward the center of the first channel. The protrusion is located below the bushing assembly to support the bushing assembly. There is a preset distance between the protrusion and the piston rod to allow gas to flow.

7. The air suspension according to claim 6, characterized in that, It also includes a buffer element disposed below the protrusion, and having a third through hole inside for the piston rod to pass through; the buffer element and the side wall of the second channel and / or the inner side wall of the third through hole of the buffer element and the outer wall of the piston rod have a gas flow channel for gas flow.

8. The air suspension according to claim 7, characterized in that, An airflow groove is provided on the upper side of the buffer to form a gas flow channel when the buffer and the protrusion come into contact with each other.

9. The air suspension according to claim 7, characterized in that, The cross-sectional dimension of the third through hole of the buffer is larger than that of the piston rod to form a gas flow channel.

10. The air suspension according to claim 9, characterized in that, There is a preset gap between the inner wall of the third through hole and the outer wall of the piston rod, and the preset gap size is 0.75 to 2 mm.

11. The air suspension according to claim 7, characterized in that, The outer wall of the buffer is formed with a first groove; The air suspension also includes a limiting ring, which is sleeved on the first groove to compress and limit the buffer.

12. The air suspension according to any one of claims 1-11, characterized in that, It also includes a sealing ring disposed between the sealing cap and the inner wall of the first channel to prevent gas in the first channel from flowing out between the sealing cap and the inner wall of the first channel.

13. The air suspension according to any one of claims 1-11, characterized in that, The inner wall of the first channel is also provided with a step and a second groove; The air suspension also includes a retaining ring, which, when the sealing cover is located at the second channel, limits the sealing cover by placing the retaining ring at the second groove and using the retaining ring and the step.

14. The air suspension according to claim 13, characterized in that, The retaining ring has a notch, and a fourth through hole is provided at the end of the retaining ring near the notch. The retaining ring can shrink in size when subjected to external force and return to its original size when the external force disappears, so as to place the retaining ring in the second groove.

15. A vehicle, characterized in that, Includes the air suspension according to any one of claims 1-14.

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