Air spring shock absorber and vehicle

Abstract

The embodiment of the utility model relates to the technical field of air spring shock absorbers, and discloses an air spring shock absorber and a vehicle. The air spring shock absorber comprises a shock absorber body, a piston, a sealing seat and a first sealing piece, the shock absorber body is sleeved with the piston, the piston is provided with internal threads, the sealing seat comprises a connecting part and an abutting part which are coaxially connected, the abutting part is arranged at the end, away from the piston, of the connecting part in a surrounding mode, and the connecting part is located between the piston and the shock absorber body; the connecting part is provided with an external thread matched with the internal thread, the external thread is in threaded connection with the internal thread, and at least part of the first sealing piece abuts against the position between the end of the piston and the abutting part. The air spring shock absorber is good in air tightness, abnormal sound is not prone to being generated during movement, and therefore the riding comfort of a vehicle is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of air spring shock absorbers, and in particular to an air spring shock absorber and a vehicle. Background Art

[0002] At present, air spring shock absorbers are becoming more and more popular in vehicles. Air spring shock absorbers mainly consist of two parts: air spring and shock absorber. The air spring includes a piston and an airbag connected to the piston. The shock absorber is arranged in the piston. The shock absorber is connected to the axle or integrated into the suspension strut. The air spring and shock absorber together form an airtight structure. The electronic control unit can achieve the preset vibration reduction performance by controlling the inflation or exhaust of the air spring shock absorber.

[0003] In the related technology, a sealing ring is used for circumferential sealing between the piston and the shock absorber, which may easily lead to insufficient air tightness of the air spring shock absorber after long-term use. In addition, the piston and the sealing seat are mainly connected by interference fit. During the movement of the air spring shock absorber, relative movement is likely to occur between the piston and the sealing seat, which may easily produce abnormal noise, thereby affecting the user's riding experience. Utility Model Content

[0004] In view of this, an embodiment of the present application provides an air spring shock absorber and a vehicle. The air spring shock absorber has good air tightness and is not prone to generating abnormal noise during movement, thereby improving the ride comfort of the vehicle.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an air spring shock absorber, the air spring shock absorber comprising: a shock absorber, a piston, the piston being sleeved on the shock absorber, the piston having an internal thread;

[0007] The sealing seat includes a coaxially connected connecting portion and an abutting portion, the abutting portion is arranged around an end of the connecting portion away from the piston, the connecting portion is located between the piston and the shock absorber, and the connecting portion has an external thread matching the internal thread, and the external thread is threadedly connected to the internal thread;

[0008] The first sealing member is configured such that at least a portion of the first sealing member abuts between the end portion of the piston and the abutting portion.

[0009] The air spring shock absorber provided in the embodiment of the present application includes a shock absorber, a piston, a sealing seat and a first sealing member, wherein the piston includes an internal thread, the sealing seat includes an abutting portion and a connecting portion, and the connecting portion includes an external thread. By arranging the shock absorber, the piston and the sealing seat, the air spring shock absorber forms a closed gas chamber for compressing the gas, thereby enabling the air spring shock absorber to achieve a vibration reduction and isolation function. The piston is provided with an internal thread, and the connecting portion of the sealing seat is provided with an external thread, so that the sealing seat is threadedly connected to the piston, thereby making it difficult for the sealing seat and the piston to move relative to each other when the piston moves, thereby effectively avoiding the air spring from generating abnormal noise due to the relative movement of the sealing seat and the piston. At the same time, by arranging the first sealing member between the abutting portion of the sealing seat and the end of the piston, the first sealing member is compressed by the thread pre-tightening force generated between the sealing seat and the piston, thereby improving the sealing performance of the first sealing member, thereby effectively improving the air tightness of the air spring shock absorber.

[0010] In a possible implementation of the present application, the first sealing member includes a first sealing portion, and the first sealing portion abuts between the piston and the abutting portion.

[0011] In a possible implementation of the present application, the first sealing member also includes: a second sealing portion, the second sealing portion is connected to the first sealing portion, the first sealing portion is arranged around the outer peripheral side of the second sealing portion, and the second sealing portion is located between the inner wall of the piston and the outer wall of the connecting portion.

[0012] In a possible implementation of the present application, the air spring damper further includes a second seal located at an end of the connecting portion away from the abutting portion, and the second seal abuts between the inner sidewall of the piston and the outer sidewall of the damper.

[0013] In a possible implementation of the present application, the abutting portion has a first sealing groove, the first sealing groove is located on a side of the abutting portion facing the piston, and the first sealing portion is located in the first sealing groove.

[0014] In a possible implementation of the present application, the connecting portion has a second sealing groove, the second sealing groove is located on the outer side of the connecting portion facing the piston, and the second sealing portion is located in the second sealing groove.

[0015] In a possible implementation of the present application, the piston is a first metal part, the sealing seat is a second metal part, the first sealing part is a first rubber part, and one of the first metal part and the second metal part is integrally vulcanized with the first rubber part.

[0016] In a possible implementation of the present application, the inner side of the abutting portion and the outer side of the shock absorber are connected by welding.

[0017] In a possible implementation of the present application, the air spring shock absorber also includes an airbag, the piston includes a first connecting section, a second connecting section and a third connecting section connected in sequence, the internal thread is located in the first connecting section, and the airbag is sealed and connected to the third connecting section.

[0018] In a second aspect, an embodiment of the present application provides a vehicle, comprising: a vehicle body and the air spring shock absorber provided in the first aspect, the air spring shock absorber being disposed in the vehicle body. The air spring shock absorber comprises: a shock absorber, a piston, the piston being sleeved within the shock absorber, the piston having an internal thread, a sealing seat, the sealing seat comprising a coaxially connected connecting portion and an abutting portion, the abutting portion being disposed around an end of the connecting portion facing away from the piston, the connecting portion being located between the piston and the shock absorber, the connecting portion having an external thread matching the internal thread, the external thread being threadedly connected to the internal thread, and a first sealing member, at least a portion of the first sealing member abutting between an end of the piston and the abutting portion. The air spring shock absorber is provided with a shock absorber, a piston and a sealing seat so that the air spring shock absorber forms a closed gas chamber for compressing gas, thereby enabling the air spring shock absorber to achieve a vibration reduction and isolation function. The piston is provided with an internal thread, and the connecting portion of the sealing seat is provided with an external thread, so that the sealing seat is threadedly connected to the piston, so that when the piston moves, it is not easy for the sealing seat and the piston to move relative to each other, thereby effectively avoiding abnormal noise generated by the air spring due to the relative movement of the sealing seat and the piston. At the same time, a first seal is provided between the abutting portion of the sealing seat and the end of the piston, so that the first seal is compressed by the threaded pre-tightening force generated between the sealing seat and the piston, thereby improving the sealing performance of the first seal, thereby improving the air tightness of the air spring shock absorber, and thus improving the ride comfort of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of the air spring shock absorber provided in an embodiment of the present application;

[0020] Figure 2 A schematic structural diagram of a piston in an air spring shock absorber provided in an embodiment of the present application;

[0021] Figure 3 A schematic structural diagram of a sealing seat and a first sealing member in an air spring shock absorber provided in an embodiment of the present application;

[0022] Figure 4 Another structural schematic diagram of the air spring shock absorber provided in an embodiment of the present application;

[0023] Figure 5 for Figure 2 Schematic diagram of the structure of the middle sealing seat;

[0024] Figure 6 for Figure 4 Schematic diagram of the structure of the middle sealing seat;

[0025] Figure 7 This is another structural schematic diagram of the air spring shock absorber provided in an embodiment of the present application;

[0026] Figure 8 This is another structural schematic diagram of the piston in the air spring shock absorber provided in an embodiment of the present application;

[0027] Figure 9 This is another structural schematic diagram of the sealing seat and the first sealing member in the air spring shock absorber provided in an embodiment of the present application;

[0028] Figure 10 for Figure 9 Schematic diagram of the structure of the middle sealing seat.

[0029] Reference numerals:

[0030] 100-shock absorber; 200-piston; 210-internal thread; 220-first connecting section; 230-second connecting section; 240-third connecting section; 300-sealing seat; 310-abutting portion; 311-first sealing groove; 320-connecting portion; 321-external thread; 322-second sealing groove; 400-first sealing member; 410-first sealing portion; 420-second sealing portion; 500-second sealing member. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0032] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0033] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0034] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0035] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0036] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0037] In the related technology, a sealing ring is used for circumferential sealing between the shock absorber and the piston, which may easily lead to insufficient air tightness of the air spring shock absorber after long-term use. In addition, the piston and the sealing seat are mainly connected by interference fit. During the movement of the air spring shock absorber, relative movement is likely to occur between the piston and the sealing seat, which may easily produce abnormal noise, thereby affecting the user's riding experience.

[0038] In view of the above problems, an embodiment of the present application provides an air spring shock absorber and a vehicle, in which a threaded connection is adopted between the piston and the sealing seat of the air spring shock absorber so that the piston and the sealing seat are fixedly connected in a more reliable manner, thereby eliminating the relative movement between the piston and the sealing seat to avoid abnormal noise from the air spring shock absorber. At the same time, since the first seal is arranged between the piston and the sealing seat, when the piston and the sealing seat are threadedly connected, the sealing seat can press the first seal between the sealing seat and the piston, thereby improving the air tightness of the air spring shock absorber.

[0039] The specific implementation of the air spring shock absorber and the vehicle provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 1As shown, an embodiment of the present application provides a vehicle, which includes a vehicle body and an air spring shock absorber. The air spring shock absorber is arranged on the vehicle body, and the air spring shock absorber is used to improve the vibration damping performance of the vehicle body, thereby improving the ride comfort of the vehicle.

[0041] It should be noted that the vehicle in this application may refer to a large automobile, a small car, a special-purpose vehicle, etc. For example, based on the vehicle type, the vehicle in this application may be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other vehicle types. A vehicle generally has wheels, a power source, and a transmission system arranged between the wheels and the power source. The transmission system can transmit power provided by the power source to the wheels, causing the wheels to rotate, thereby driving the vehicle.

[0042] It should be noted that in the embodiments of this application, the type of vehicle power source is not limited. For example, for fuel vehicles, the power source may refer to a gasoline engine, a diesel engine, or other fuel engine; for electric vehicles, the power source may refer to an electric motor; for hybrid vehicles, the power source may refer to an engine or an electric motor; for vehicles powered by other means, the power source may refer to a device that generates power.

[0043] On this basis, refer to Figures 1 to 4 As shown, an embodiment of the present application also provides an air spring shock absorber, which includes a shock absorber 100, a piston 200, a sealing seat 300 and a first sealing member 400. The piston 200 is sleeved on the shock absorber 100, and the piston 200 has an internal thread 210. The sealing seat 300 includes a coaxially connected connecting portion 320 and an abutting portion 310. The abutting portion 310 is arranged around the end of the connecting portion 320 away from the piston 200. The connecting portion 320 is located between the piston 200 and the shock absorber 100. The connecting portion 320 has an external thread 321 that matches the internal thread 210. The external thread 321 is threadedly connected to the internal thread 210. At least a portion of the first sealing member 400 abuts between the end of the piston 200 and the abutting portion 310.

[0044] Compared to the related art that uses an interference fit to securely connect the piston 200 and the sealing seat 300, the piston 200 and the sealing seat 300 in the present application are secured by a threaded connection. This threaded connection is more stable and reliable, effectively preventing relative movement between the piston 200 and the sealing seat 300 due to a reduction or disappearance of the interference fit between the piston 200 and the sealing seat 300 after long-term use. Furthermore, since the piston 200 and the sealing seat 300 are threadedly connected, they can compress the first seal 400, thereby allowing the first seal 400 to reliably abut between the end of the piston 200 and the abutment portion 310, thereby improving the sealing performance of the first seal 400.

[0045] It is worth noting that the first sealing member 400 can be Figure 1 and Figure 3 The first sealing member 400 shown may also be Figure 4 The first seal 400 is shown. Figure 1 and Figure 3 The first seal 400 shown is entirely located between the end of the piston 200 and the abutment portion 310. When the connecting portion 320 is threadedly connected to the piston 200, a pre-tightening force along the axial direction of the piston 200 is generated between the connecting portion 320 and the piston 200. Since the first seal 400 is located between the end of the piston 200 and the abutment portion 310, the pre-tightening force will press the first seal 400 between the end of the piston 200 and the abutment portion 310, thereby enabling the first seal 400 to effectively seal the gap between the end of the piston 200 and the abutment portion 310, thereby improving the air tightness of the first seal 400.

[0046] for Figure 4 The first seal 400 shown in the figure has a partial structure located between the piston 200 and the connecting portion 320, and a partial structure located between the end of the piston 200 and the abutting portion 310. Similarly, when the connecting portion 320 is threadedly connected to the piston 200, a pre-tightening force along the axial direction of the piston 200 will be generated between the connecting portion 320 and the piston 200. The first seal 400 located between the end of the piston 200 and the abutting portion 310 will be compressed under the action of the pre-tightening force, so that the first seal 400 located between the end of the piston 200 and the abutting portion 310 can effectively seal the gap between the end of the piston 200 and the abutting portion 310, thereby improving the air tightness of the air spring shock absorber.

[0047] The air spring shock absorber provided in the embodiment of the present application includes a shock absorber 100, a piston 200, a sealing seat 300 and a first sealing member 400. The piston 200 includes an internal thread 210, and the sealing seat 300 includes an abutment portion 310 and a connection portion 320. The connection portion 320 includes an external thread 321. By arranging the shock absorber 100, the piston 200 and the sealing seat 300, the air spring shock absorber forms a sealed gas chamber for compressing gas, thereby enabling the air spring shock absorber to achieve a vibration reduction and isolation function. The piston 200 is provided with an internal thread 210, and the connection portion 320 of the sealing seat 300 is provided with an external thread 321, so that the sealing seat 300 is threadedly connected to the piston 200. When the piston 200 moves, relative movement between the sealing seat 300 and the piston 200 is not likely to occur, thereby effectively preventing the air spring from generating abnormal noise due to the relative movement between the sealing seat 300 and the piston 200. At the same time, by arranging a first seal 400 between the abutment portion 310 of the sealing seat 300 and the end of the piston 200, the first seal 400 is compressed by the threaded pre-tightening force generated between the sealing seat 300 and the piston 200, thereby improving the sealing performance of the first seal 400, thereby effectively improving the air tightness of the air spring shock absorber.

[0048] Reference Figure 3 and Figure 4 As shown, in a possible implementation, the first sealing member 400 includes a first sealing portion 410 , and the first sealing portion 410 abuts between the piston 200 and the abutting portion 310 .

[0049] In this way, the threaded preload force generated between the connecting portion 320 and the piston 200 can press the first sealing portion 410 between the end of the piston 200 and the abutting portion 310, thereby enabling the first sealing portion 410 to effectively seal the gap between the end of the piston 200 and the abutting portion 310.

[0050] Reference Figure 4 As shown, in a possible implementation of the present application, the first sealing member 400 also includes a second sealing portion 420, which is connected to the first sealing portion 410, and the first sealing portion 410 is arranged around the outer peripheral side of the second sealing portion 420, and the second sealing portion 420 is located between the inner wall of the piston 200 and the outer wall of the connecting portion 320.

[0051] That is to say, the first sealing portion 400 is not only located between the end of the piston 200 and the abutment portion 310, but the first sealing portion 400 is also located between the piston 200 and the connecting portion 320, that is, the first sealing portion 410 is located between the end of the piston 200 and the abutment portion 310, and the second sealing portion 420 is located between the inner wall of the piston 200 and the outer wall of the connecting portion 320. In this way, the second sealing portion 420 can seal the gap between the piston 200 and the connecting portion 320, and thus the second sealing portion 420 and the first sealing portion 410 work together to seal the gap between the piston 200 and the sealing seat 300, thereby effectively improving the airtightness of the first sealing portion 400.

[0052] Reference Figure 1 and Figure 4 As shown, in a possible embodiment, the air spring shock absorber further includes a second seal 500, which is located at one end of the connecting portion 320 away from the abutting portion 310, and the second seal 500 abuts between the inner wall of the piston 200 and the outer wall of the shock absorber 100.

[0053] It is understood that the end of the piston 200 and the shock absorber 100 facing away from the sealing seat 300 forms a gas chamber. Since the second seal 500 is disposed at the end of the connecting portion 320 facing away from the abutting portion 310, when the second seal 500 abuts between the inner sidewall of the piston 200 and the outer sidewall of the shock absorber 100, the second seal 500 can seal the gap between the piston 200 and the shock absorber 100. Therefore, if gas leaks from any gap between the shock absorber 100, the piston 200, and the sealing seat 300, it must first flow through the location of the second seal 500. Since the second seal 500 is located at this location, the second seal 500 can then form a first sealing structure in the gas leakage channel, and the first seal 400 can form a second sealing structure in the gas leakage channel. Therefore, the second seal 500 and the first seal 400 work together to effectively improve the air tightness of the air spring shock absorber, thereby improving the vibration damping performance of the air spring shock absorber.

[0054] Reference Figures 3 to 6 As shown, in some embodiments, the abutting portion 310 has a first sealing groove 311 , which is located on a side of the abutting portion 310 facing the piston 200 , and the first sealing portion 410 is located in the first sealing groove 311 .

[0055] In this way, when the first seal 400 and the sealing seat 300 are assembled after being processed separately, the first sealing part 410 can be positioned first through the first sealing groove 311, and then the first seal 400 can be installed on the sealing seat 300, so as to facilitate the subsequent threaded connection between the sealing seat 300 and the piston 200. Alternatively, when the first seal 400 and the sealing seat 300 are vulcanized together, the first sealing groove 311 can be used as a process groove for the first sealing part 410 to facilitate the vulcanization of the first sealing part 410 on the sealing seat 300. Alternatively, when the first seal 400 and the piston 200 are vulcanized together, the first sealing groove 311 can be used for auxiliary positioning when the piston 200 and the sealing seat 300 are assembled, so as to facilitate the subsequent threaded connection between the sealing seat 300 and the piston 200.

[0056] Reference Figure 4 and Figure 6 As shown, in a possible implementation of the present application, the connecting portion 320 has a second sealing groove 322 , the second sealing groove 322 is located on the outer side of the connecting portion 320 facing the piston 200 , and the second sealing portion 420 is located in the second sealing groove 322 .

[0057] That is to say, when the first sealing member 400 is provided with a second sealing portion 420, since the connecting portion 320 needs to be threadedly connected to the piston 200, the second sealing portion 420 cannot protrude too much from the outside of the connecting portion 320. Therefore, a second sealing groove 322 is provided on the outside of the connecting portion 320 toward the piston 200, so that the second sealing portion 420 seals the gap between the connecting portion 320 and the piston 200, and at the same time, the second sealing portion 420 will not interfere with the assembly of the connecting portion 320 and the piston 200.

[0058] In a possible implementation, the piston 200 is a first metal part, the sealing seat 300 is a second metal part, the first sealing part 400 is a first rubber part, and one of the first metal part and the second metal part is integrally vulcanized and molded with the first rubber part.

[0059] For example, the first seal 400 can be vulcanized and molded integrally with the piston 200, or the first seal 400 can be vulcanized and molded integrally with the sealing seat 300. In this way, the first seal 400 can be formed into a whole with the piston 200 or the sealing seat 300 during the processing stage, thereby simplifying the subsequent assembly process and improving the assembly efficiency of the air spring shock absorber.

[0060] In some embodiments, the inner side of the abutment portion 310 and the outer side of the shock absorber 100 are welded. With this arrangement, the second sealing member 500 can form a first sealing structure on the gas leakage channel, the first sealing member 400 can form a second sealing structure on the gas leakage channel, and the weld between the abutment portion 310 and the shock absorber 100 can form a third sealing structure on the gas leakage channel, thereby effectively improving the air tightness of the air spring shock absorber and thus enhancing the vibration damping performance of the air spring shock absorber.

[0061] Reference Figure 2 As shown, in a possible implementation of the present application, the air spring shock absorber also includes an airbag, the piston 200 includes a first connecting section 220, a second connecting section 230 and a third connecting section 240 connected in sequence, the internal thread 210 is located in the first connecting section 220, and the airbag is sealed and connected to the third connecting section 240.

[0062] Thus, the shock absorber 100, the piston 200, the sealing seat 300 and the airbag together enclose a closed gas chamber, and the end of the piston 200 facing away from the airbag is threadedly connected to the sealing seat 300, thereby eliminating the relative movement between the piston 200 and the sealing seat 300, and allowing the first sealing member 400 and the sealing seat 300 to effectively seal the gas chamber, thereby improving the vibration reduction and noise reduction performance of the air spring shock absorber.

[0063] Reference Figures 7 to 9 As shown, it should be noted that in order to prevent abnormal noise from being generated when the air spring shock absorber moves, in some embodiments, the airbag seal is connected to the outer side of the third connecting section 240, and the shock absorber 100 is interference-connected to the inner side of the third connecting section 240. In this arrangement, both the connecting portion 320 and the first connecting section 220 may not be provided with threads, and the first connecting section 220 is conical, that is, the first connecting section 220 may include a large diameter end and a small diameter end, and the large diameter end is away from the abutting portion 310, so that there is a gap between the inner side wall of the first connecting section 220 and the outer side wall of the connecting portion 320. This gap can avoid collision between the piston 200 and the sealing seat 300 when the air spring shock absorber moves, thereby avoiding abnormal noise from being generated when the air spring shock absorber moves.

[0064] The small-diameter end is arranged close to the abutment portion 310. Since the piston 200 and the shock absorber 100 are in interference fit, a force can be generated toward the abutment portion 310, so that the first sealing portion 410 can abut between the end face of the small-diameter end and the abutment portion 310, thereby sealing the gap between the piston 200 and the sealing seat 300. The abutment portion 310 and the shock absorber 100 are welded together, thereby jointly improving the air tightness of the air spring shock absorber. In addition, the first sealing portion 410 can also be used to form a flexible contact between the piston 200 and the sealing seat 300, thereby improving the abnormal noise phenomenon of the air spring shock absorber.

[0065] In addition, refer to Figure 9 and Figure 10 As shown, in order to facilitate the processing and forming of the sealing seat 300, the outer wall of the connecting portion 320 can be set to be conical, that is, the outer diameter of the connecting portion 320 gradually decreases from the end away from the abutting portion 310 to the end close to the abutting portion 310.

[0066] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. An air spring shock absorber, characterized in that: include: shock absorber (100); A piston (200), wherein the piston (200) is sleeved on the shock absorber (100), and the piston (200) has an internal thread (210); A sealing seat (300), the sealing seat (300) comprising a coaxially connected abutting portion (310) and a connecting portion (320), the abutting portion (310) being arranged around an end of the connecting portion (320) facing away from the piston (200), the connecting portion (320) being located between the piston (200) and the shock absorber (100), the connecting portion (320) having an external thread (321) matching the internal thread (210), the external thread (321) being threadedly connected to the internal thread (210); A first sealing member (400), at least a portion of which abuts between an end portion of the piston (200) and the abutting portion (310).

2. The air spring damper according to claim 1, characterized in that: The first sealing member (400) includes a first sealing portion (410), and the first sealing portion (410) abuts between the piston (200) and the abutting portion (310).

3. The air spring damper according to claim 2, characterized in that: Also includes: A second sealing portion (420), wherein the second sealing portion (420) is connected to the first sealing portion (410), the first sealing portion (410) is arranged around the outer peripheral side of the second sealing portion (420), and the second sealing portion (420) is located between the inner side wall of the piston (200) and the outer side wall of the connecting portion (320).

4. The air spring damper according to any one of claims 1 to 3, characterized in that: The invention also includes a second sealing member (500), which is located at one end of the connecting portion (320) away from the abutting portion (310), and the second sealing member (500) abuts between the inner wall of the piston (200) and the outer wall of the shock absorber (100).

5. The air spring damper according to claim 2 or 3, characterized in that: The abutting portion (310) has a first sealing groove (311), the first sealing groove (311) is located on a side of the abutting portion (310) facing the piston (200), and the first sealing portion (410) is located in the first sealing groove (311).

6. The air spring damper according to claim 3, characterized in that: The connecting portion (320) has a second sealing groove (322), the second sealing groove (322) is located on the outside of the connecting portion (320) facing the piston (200), and the second sealing portion (420) is located in the second sealing groove (322).

7. The air spring damper according to any one of claims 1 to 3, characterized in that: The piston (200) is a first metal part, the sealing seat (300) is a second metal part, the first sealing part (400) is a first rubber part, and one of the first metal part and the second metal part is integrally vulcanized and molded with the first rubber part.

8. The air spring damper according to any one of claims 1 to 3, characterized in that: The inner side of the abutting portion (310) and the outer side of the shock absorber (100) are welded together.

9. The air spring damper according to any one of claims 1 to 3, characterized in that: It also includes an airbag, the piston (200) includes a first connecting section (220), a second connecting section (230) and a third connecting section (240) connected in sequence, the internal thread (210) is located in the first connecting section (220), and the airbag is sealed and connected to the third connecting section (240).

10. A vehicle, characterized in that: include: Vehicle body; The air spring damper according to any one of claims 1 to 9, wherein the air spring damper is provided on the vehicle body.

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