Air spring and vehicle

Abstract

An air spring (10) and a vehicle (100). The air spring (10) comprises a valve mount (1), a solenoid valve (2), a seal ring (3) and a protective ring (4); the valve mount (1) is provided with an opening (11); the solenoid valve (2) is mounted in the valve mount (1) through the opening (11); the seal ring (3) and the protective ring (4) are both arranged between the periphery of the solenoid valve (2) and the inner wall of the valve mount (1); and the protective ring (4) is located between the opening (11) and the seal ring (3), to prevent a foreign object from reaching the seal ring (3). The vehicle (100) comprises the air spring (10).

Description

Air spring and vehicle

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 202410892431.7, filed on July 4, 2024, and entitled "Air spring and vehicle", the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of automobile chassis damping, and in particular to an air spring and a vehicle. BACKGROUND

[0004] As a high-value driving experience product that takes into account comfort and off-road performance, air springs are widely used at present, especially double-cavity air springs, which are highly sought after.

[0005] In the prior art, a double-cavity air spring realizes adjustable stiffness on the basis of high-low adjustment through millisecond switching of an electromagnetic valve. However, the increase of the electromagnetic valve intensifies the design difficulty of the sealing structure of the air spring. SUMMARY

[0006] The following is a summary of the subject matter of the detailed description herein, which is not intended to limit the scope of the claims. According to various embodiments of the present application, an air spring and a vehicle are provided.

[0007] According to one aspect of the present application, an air spring is provided, which includes a valve seat, an electromagnetic valve, a sealing ring and a protective ring. The valve seat has an opening, the electromagnetic valve is arranged in the valve seat via the opening, the sealing ring and the protective ring are both arranged between the outer periphery of the electromagnetic valve and the inner wall of the valve seat, and the protective ring is located between the opening and the sealing ring to block foreign matter from entering the sealing ring.

[0008] In some embodiments, the protective ring can combine with the electromagnetic valve and the valve seat to form a one-way valve, and the conduction direction is from the sealing ring to the opening.

[0009] In some embodiments, the protective ring includes a ring-shaped body and a one-way sealing portion. The ring-shaped body is sleeved outside the electromagnetic valve, and the one-way sealing portion is configured on the side of the ring-shaped body away from the electromagnetic valve. The one-way sealing portion gradually extends in a direction away from the sealing ring along a direction radially outward of the electromagnetic valve. The side of the one-way sealing portion facing the sealing ring abuts against the inner wall of the valve seat.

[0010] In some embodiments, along the direction radially outward of the electromagnetic valve, the cross-sectional area of the one-way sealing portion gradually decreases.

[0011] In some embodiments, the length of the one-way sealing part is greater than the distance between the outer circumference of the electromagnetic valve and the inner wall of the valve seat in the radial direction of the electromagnetic valve.

[0012] In some embodiments, the inner wall of the valve seat has a fitting section and a flared section, the diameter of the flared section is greater than that of the fitting section, there is an inclined transition section between the fitting section and the flared section, the opening is the mouth of the flared section away from one end of the fitting section, and the one-way sealing part is arranged in abutment with the inclined transition section.

[0013] In some embodiments, the annular body is arranged in spaced relation with the fitting section, the flared section, and the inclined transition section.

[0014] In some embodiments, the air spring further comprises a stopper, which is arranged at the opening and blocks one end of the electromagnetic valve facing the opening.

[0015] In some embodiments, the stopper is configured with a first annular notch at the outer circumference of one end facing the sealing ring, and the annular body is partially sleeved outside the electromagnetic valve and partially outside the first annular notch.

[0016] In some embodiments, the electromagnetic valve is configured with a second annular notch at the outer circumference of one end facing the opening, the stopper is sleeved outside the second annular notch, and is connected with the valve seat.

[0017] In some embodiments, a clamping groove is configured at the opening, a clamping spring is arranged in the clamping groove, and the clamping spring blocks one side of the stopper away from the sealing ring.

[0018] According to another aspect of the present application, the embodiments of the present application also provide a vehicle, which comprises the air spring as described above.

[0019] Compared with the prior art, the air spring of the present application has at least the following beneficial effects.

[0020] This application discloses an air spring. The air spring uses a sealing ring disposed between the outer periphery of the solenoid valve and the inner wall of the valve seat to seal the gap between them, preventing gas inside the valve seat from leaking out through the valve seat opening. This application also uses a protective ring disposed between the outer periphery of the solenoid valve and the inner wall of the valve seat. The protective ring can be made of rubber and is located between the opening and the sealing ring. The protective ring prevents foreign objects, such as powder, from entering the sealing ring from the opening. Specifically, without a protective ring, foreign objects such as dust, gravel, and water can enter the sealing ring through the opening. Prolonged corrosion of the sealing ring can lead to its failure and cause air spring leakage. Similarly, without a protective ring, external water can enter the sealing ring and freeze in winter, also causing air leakage at the solenoid valve seal. Therefore, the air spring of this application uses a protective ring between the opening and the sealing ring to prevent external dust, gravel, water, and other foreign objects from entering the solenoid valve seal, protecting the sealing ring from contamination, corrosion, and freezing in winter, thus improving the stability of the sealing performance.

[0021] On the other hand, the vehicle provided in this application is manufactured based on the aforementioned air spring, and its beneficial effects are as described in the aforementioned air spring, and will not be repeated here.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, some embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 is a cross-sectional view of the air spring provided in an embodiment of this application.

[0025] Figure 2 is a magnified view of a portion of Figure 1.

[0026] Figure 3 is a cross-sectional view of the protective ring of the air spring provided in the embodiment of this application.

[0027] Figure 4 is an exploded structural diagram of the air spring provided in the embodiment of this application.

[0028] Figure 5 is a three-dimensional cross-sectional view of the valve seat of the air spring provided in the embodiment of this application.

[0029] Fig. 6 is a perspective view of a protective ring of an air spring according to an embodiment of the present application.

[0030] Fig. 7 is a schematic view of a vehicle according to an embodiment of the present application.

[0031] Reference signs: 10, air spring; 20, one-way valve; 100, vehicle; 1, valve seat; 11, opening; 111, clamping groove; 12, fitting section; 13, flared section; 14, inclined transition section; 2, electromagnetic valve; 21, second annular notch; 3, sealing ring; 4, protective ring; 41, annular body; 42, one-way sealing portion; 5, stop block; 51, first annular notch; 6, clamping spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0033] To further illustrate the technical means and effects taken by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects according to the present application will be described in detail below with reference to the drawings and some embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0034] In the description of the present application, it should be clear that the terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; the terms "vertical", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not mean that the devices or elements referred to must have a particular orientation or position, and therefore cannot be understood as a limitation on the present application.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. 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.

[0036] In the prior art, the dustproof and waterproof requirements of the sealing part of the electromagnetic valve are often ignored, which causes foreign matters such as dust and water to enter the sealing part and corrode the sealing ring, and water freezing in winter, all of which will cause the sealing ring to fail, and further cause the air spring to leak.

[0037] Embodiment 1

[0038] As shown in FIGS. 1-6, the air spring provided by the embodiment of the present application includes a valve seat 1, an electromagnetic valve 2, a sealing ring 3 and a protective ring 4, the valve seat 1 has an opening 11, the electromagnetic valve 2 is installed in the valve seat 1 via the opening 11, the sealing ring 3 and the protective ring 4 are both arranged between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1, and the protective ring 4 is located between the opening 11 and the sealing ring 3 to block foreign matters from entering the sealing ring 3.

[0039] In the embodiment, the air spring 10 is used to seal the gap between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1 by arranging the sealing ring 3 between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1, to prevent the gas in the valve seat 1 from flowing out from the opening 11 of the valve seat 1 through the gap between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1, and the air spring 10 can be a double-cavity air spring or a multi-cavity air spring, etc. In the embodiment, the protective ring 4 is arranged between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1, the protective ring 4 can be made of rubber material, and the protective ring 4 is located between the opening 11 and the sealing ring 3, to block foreign matters from entering the sealing ring 3 from the opening 11 by the protective ring 4, and the foreign matters can be dust, sand, water, etc. Specifically, when the protective ring 4 is not arranged, the dust, sand and other foreign matters can enter the sealing ring 3 from the opening 11, and long-time erosion of the sealing ring 3 will cause the sealing ring 3 to fail, resulting in air leakage of the air spring 10. When the protective ring 4 is not arranged, the water from outside enters the sealing ring 3, and freezes in winter, which also causes air leakage of the sealing part of the electromagnetic valve. Therefore, the air spring 10 of the embodiment blocks foreign matters such as dust, sand and water from entering the sealing part of the electromagnetic valve by arranging the protective ring 4 between the opening 11 and the sealing ring 3, protects the sealing ring 3 from being polluted, corroded and frozen in winter, and improves the stability of the sealing performance.

[0040] In some embodiments, the protective ring 4 can combine with the electromagnetic valve 2 and the valve seat 1 to form a one-way valve 20, and the conduction direction is from the sealing ring 3 to the opening 11.

[0041] In the embodiment, the protective ring 4 can form a one-way valve 20 in combination with the electromagnetic valve 2 and the valve seat 1, and the conduction direction is from the sealing ring 3 to the opening 11, so the protective ring 4 can prevent foreign matters such as dust, sand, water and the like from entering the sealing part of the electromagnetic valve, protect the sealing ring 3 from being polluted and corroded, and improve the stability of the sealing performance; in addition, when the sealing ring 3 is damaged and the sealing part of the electromagnetic valve leaks, the protective ring 4 cannot prevent the gas flowing from the sealing ring 3 to the opening 11, and when the air spring 10 is detected for helium leakage, if the protective ring 4 forms the one-way valve 20 in combination with the electromagnetic valve 2 and the valve seat 1, the advantage is that the protective ring 4 will not cause secondary plugging, so that the failure of the sealing ring 3 can be detected, and therefore the protective ring 4 of the embodiment can solve the problems of poor dustproof and waterproof performance, and also avoid the problems of secondary plugging of the protective ring 4, failure of the sealing ring 3 that cannot be detected, and detection failure risk when the air spring 10 is detected for helium leakage.

[0042] In some embodiments, the protective ring 4 comprises a ring-shaped body 41 and a one-way sealing part 42, the ring-shaped body 41 is sleeved on the outside of the electromagnetic valve 2, and the one-way sealing part 42 is arranged on the side of the ring-shaped body 41 away from the electromagnetic valve 2, and gradually extends away from the sealing ring 3 in the direction radially outward of the electromagnetic valve 2, and the side of the one-way sealing part 42 facing the sealing ring 3 abuts against the inner wall of the valve seat 1.

[0043] In the embodiment, the protective ring 4 comprises a ring-shaped body 41 and a one-way sealing part 42, specifically, the ring-shaped body 41 is sleeved on the outside of the electromagnetic valve 2, the one-way sealing part 42 is arranged on the side of the ring-shaped body 41 away from the electromagnetic valve 2, and gradually extends away from the sealing ring 3 in the direction radially outward of the electromagnetic valve 2, and the side of the one-way sealing part 42 facing the sealing ring 3 abuts against the inner wall of the valve seat 1, so when foreign matters such as dust, sand, water and the like enter the side of the one-way sealing part 42 facing the opening 11 from the opening 11, a force is applied to the one-way sealing part 42 in the direction of the sealing ring 3, so that the side of the one-way sealing part 42 facing the sealing ring 3 abuts against the inner wall of the valve seat 1 more tightly; when the sealing ring 3 fails and leaks, the gas in the valve seat 1 flows to the side of the one-way sealing part 42 facing the sealing ring 3 through the sealing ring 3, and a force is applied to the one-way sealing part 42 in the direction away from the sealing ring 3, so that the side of the one-way sealing part 42 facing the sealing ring 3 is separated from the inner wall of the valve seat 1, the protective ring 4 forms the one-way valve 20 in combination with the electromagnetic valve 2 and the valve seat 1, and the conduction direction is from the sealing ring 3 to the opening 11, so the problems of poor dustproof and waterproof performance are solved, and the problems of secondary plugging of the protective ring 4, failure of the sealing ring 3 that cannot be detected, and detection failure risk when the air spring 10 is detected for helium leakage are avoided.

[0044] In some embodiments, the cross-sectional area of the one-way sealing portion 42 gradually decreases in a direction radially outward of the electromagnetic valve 2.

[0045] In the present embodiment, the cross-sectional area of the one-way sealing portion 42 gradually decreases in a direction radially outward of the electromagnetic valve 2, which makes the one-way sealing portion 42 more easily deformable, and improves the sensitivity of the one-way valve 20 formed by the combination of the protective ring 4, the electromagnetic valve 2 and the valve seat 1.

[0046] In some embodiments, the length of the one-way sealing portion 42 is greater than the distance between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1 in the radial direction of the electromagnetic valve 2.

[0047] In the present embodiment, the length of the one-way sealing portion 42 is greater than the distance between the outer periphery of the electromagnetic valve 2 and the inner wall of the valve seat 1 in the radial direction of the electromagnetic valve 2, which ensures that the one-way sealing portion 42 has sufficient length to abut against the inner wall of the valve seat 1 on the side of the one-way sealing portion 42 facing the sealing ring 3 after assembly, thereby forming the one-way valve 20.

[0048] In some embodiments, the inner wall of the valve seat 1 has a fitting section 12 and a flared section 13, the diameter of the flared section 13 is greater than the diameter of the fitting section 12, there is an inclined transition section 14 between the fitting section 12 and the flared section 13, the opening 11 is the mouth of the flared section 13 away from the fitting section 12, and the one-way sealing portion 42 is arranged in abutment with the inclined transition section 14.

[0049] In the present embodiment, the inner wall of the valve seat 1 has a fitting section 12 and a flared section 13, the diameter of the flared section 13 is greater than the diameter of the fitting section 12, there is an inclined transition section 14 between the fitting section 12 and the flared section 13, the opening 11 is the mouth of the flared section 13 away from the fitting section 12, and the one-way sealing portion 42 is arranged in abutment with the inclined transition section 14. Specifically, the inclined transition section 14 is inclined toward the opening 11, and the side of the one-way sealing portion 42 away from the opening 11 is arranged in abutment with the inclined transition section 14 (i.e., the side of the one-way sealing portion 42 facing the sealing ring 3 is arranged in abutment with the inclined transition section 14), which prevents the force applied to the one-way sealing portion 42 in the direction of the sealing ring 3 from being too large when foreign matter such as dust, sand, water, etc. enters the side of the one-way sealing portion 42 facing the opening 11 from the opening 11, causing the one-way sealing portion 42 to deform and tilt in the direction of the sealing ring 3, thereby causing the one-way valve 20 formed by the combination of the protective ring 4, the electromagnetic valve 2 and the valve seat 1 to fail.

[0050] In some embodiments, the annular body 41 is spaced apart from the fitting section 12, the flared section 13 and the inclined transition section 14.

[0051] In the embodiment, the annular body 41 is spaced apart from the fitting section 12, the flared section 13 and the inclined transition section 14, so that a gap is formed between the annular body 41 and the fitting section 12, the flared section 13 and the inclined transition section 14. When the sealing ring 3 fails, the gap forms a smooth air leakage channel, so that the failure of the sealing ring 3 can be detected.

[0052] In some embodiments, the air spring 10 further comprises a stop block 5, which is arranged at the opening 11 and blocks one end of the electromagnetic valve 2 towards the opening 11.

[0053] In the embodiment, the stop block 5 is arranged at the opening 11 and blocks one end of the electromagnetic valve 2 towards the opening 11, so that the electromagnetic valve 2 is prevented from being separated from the valve seat 1.

[0054] In some embodiments, a first annular notch 51 is formed on the outer periphery of one end of the stop block 5 towards the sealing ring 3, and the annular body 41 is partially sleeved outside the electromagnetic valve 2 and partially sleeved outside the first annular notch 51.

[0055] In the embodiment, the first annular notch 51 is formed on the outer periphery of one end of the stop block 5 towards the sealing ring 3, and the annular body 41 is partially sleeved outside the electromagnetic valve 2 and partially sleeved outside the first annular notch 51. The first annular notch 51 facilitates the installation and positioning of the annular body 41. In the embodiment, the annular body 41 can block dust, sand, water and other foreign matters entering from the opening 11 from entering the sealing ring 3 through the gap between the outer wall of the electromagnetic valve 2 and the inner wall of the stop block 5 and the gap between the first annular notch 51 and the stop block 5, so as to protect the sealing ring 3 from being polluted, corroded and frozen in winter, and improve the stability of the sealing performance.

[0056] In some embodiments, a second annular notch 21 is formed on the outer periphery of one end of the electromagnetic valve 2 towards the opening 11, and the stop block 5 is sleeved outside the second annular notch 21 and connected with the valve seat 1.

[0057] In the embodiment, the second annular notch 21 is formed on the outer periphery of one end of the electromagnetic valve 2 towards the opening 11, and the stop block 5 is sleeved outside the second annular notch 21 and connected with the valve seat 1. The second annular notch 21 facilitates the assembly and positioning between the stop block 5 and the electromagnetic valve 2.

[0058] In some embodiments, a clamping groove 111 is formed at the opening 11, and a clamping spring 6 is arranged in the clamping groove 111 and blocks one side of the stop block 5 away from the protective ring 4.

[0059] In the embodiment, the opening 11 is configured with a clamping groove 111, a clamping spring 6 is arranged in the clamping groove 111, the clamping spring 6 is arranged on the side of the stop block 5 away from the protective ring 4, the stop block 5 is arranged on the end of the electromagnetic valve 2 facing the opening 11, and the electromagnetic valve 2 is prevented from being separated from the valve seat 1.

[0060] Embodiment 2

[0061] The embodiment of the application further provides a vehicle 100, which comprises the air spring 10 as described above.

[0062] In conclusion, those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the devices, apparatuses and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein.

[0063] The above merely describes the specific embodiments of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, and these modifications or replacements should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. An air spring, wherein, The air spring comprises a valve seat, an electromagnetic valve, a sealing ring and a protective ring, the valve seat has an opening, the electromagnetic valve is arranged in the valve seat via the opening, the sealing ring and the protective ring are both arranged between the outer periphery of the electromagnetic valve and the inner wall of the valve seat, and the protective ring is located between the opening and the sealing ring to prevent foreign matter from entering the sealing ring.

2. The air spring of claim 1, wherein, The protective ring can combine with the electromagnetic valve and the valve seat to form a one-way valve, and the conduction direction is from the sealing ring to the opening.

3. The air spring of claim 2, wherein, The protective ring comprises a ring-shaped body and a one-way sealing part, the ring-shaped body is sleeved outside the electromagnetic valve, the one-way sealing part is configured on the side of the ring-shaped body away from the electromagnetic valve, and gradually extends away from the sealing ring in the direction radially outward of the electromagnetic valve, and the side of the one-way sealing part facing the sealing ring abuts against the inner wall of the valve seat.

4. The air spring of claim 3, wherein, In the direction radially outward of the electromagnetic valve, the cross-sectional area of the one-way sealing part gradually decreases.

5. The air spring of claim 3, wherein, In the radial direction of the electromagnetic valve, the length of the one-way sealing part is greater than the distance between the outer periphery of the electromagnetic valve and the inner wall of the valve seat.

6. The air spring of claim 3, wherein, The inner wall of the valve seat has a fitting section and a flared section, the diameter of the flared section is greater than that of the fitting section, there is an inclined transition section between the fitting section and the flared section, the opening is the port of the flared section away from the fitting section, and the one-way sealing part is arranged in abutment with the inclined transition section.

7. The air spring of claim 6, wherein, The ring-shaped body is spaced apart from the fitting section, the flared section and the inclined transition section.

8. The air spring of claim 3, wherein, The air spring further comprises a stopper, the stopper is arranged at the opening and blocks the end of the electromagnetic valve facing the opening.

9. The air spring of claim 8, wherein, The outer periphery of the end of the stopper facing the sealing ring is configured with a first annular notch, the ring-shaped body is partially sleeved outside the electromagnetic valve and partially sleeved outside the first annular notch.

10. The air spring of claim 8, wherein, The end of the electromagnetic valve facing the opening is configured with a second annular notch, the stopper is sleeved outside the second annular notch and connected with the valve seat.

11. The air spring of claim 8, wherein, A clamping groove is configured at the opening, a clamping spring is arranged in the clamping groove, and the clamping spring blocks the side of the stopper away from the protective ring.

12. A vehicle, wherein, The vehicle comprises the air spring of any one of claims 1-11.

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