Sealing device, shock absorber, suspension assembly, and vehicle

Abstract

A vehicle, comprising a sealing device, a shock absorber, and a suspension assembly. The sealing device comprises: a blocking body and a connecting device. The blocking body is configured to block a channel where the blocking body is located; the connecting device is configured to realize electrical connection between electrical devices in spaces on two sides of the channel; the blocking body surrounds the connecting device, such that the connecting device is arranged inside the blocking body; and the blocking body and the connecting device form a sealed connection, such that the blocking body and the connecting device can isolate a fluid passage as a whole.

Description

Sealing devices, shock absorbers, suspension assemblies and vehicles

[0001] This application claims priority to the following Chinese patent applications filed on December 31, 2024, by the Chinese Patent Office: Application No. 202411998578.0, entitled "Shock Damper Assembly, Suspension Assembly and Vehicle"; Application No. 202411999719.0, entitled "Shock Damper Assembly, Suspension Assembly and Vehicle"; Application No. 202423322248.8, entitled "Sealing Device, Shock Damper, Suspension Assembly and Vehicle"; and Application No. 202411999605.6, entitled "Sealing Device, Shock Damper, Suspension Assembly and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to, but is not limited to, the field of automotive shock absorption technology, specifically to a sealing device, a shock absorber, a suspension assembly, and a vehicle. Background Technology

[0003] The suspension assembly is an important part of a vehicle for achieving shock absorption. In the suspension assembly, coil springs and other components can be used to achieve the shock absorption effect.

[0004] In one option, air springs are used as part of the shock absorber to achieve better damping. In another option, the height of the suspension assembly is adjusted by an actuator. Summary of the Invention

[0005] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0006] According to a first aspect of this application, embodiments of this application provide a sealing device applied to a vehicle, the sealing device comprising:

[0007] A blocking element is configured to block the passage it occupies.

[0008] A connecting device is configured to enable electrical connection of electrical devices in the spaces on both sides of the channel;

[0009] The sealing body surrounds the connecting device, so that the connecting device is located inside the sealing body; the sealing body and the connecting device form a sealed connection, so that the sealing body and the connecting device are a whole that can isolate the passage of fluid.

[0010] In some embodiments of this application, the sealing body is made of at least an insulating material.

[0011] In some embodiments of this application, the connecting device is made of at least a conductive material.

[0012] In some embodiments of this application, the connecting device is configured as a connector; the connector is disposed inside the sealing body.

[0013] In some embodiments of this application, the blocker and the connector together form an integral insertion groove;

[0014] And / or, the sealing body is formed with a insertion groove;

[0015] And / or, the connector is formed with a insertion groove.

[0016] In some embodiments of this application, the connector is located at the bottom of the insertion groove.

[0017] In some embodiments of this application, two of the said insertion grooves are disposed on opposite sides of the sealing body.

[0018] In some embodiments of this application, the connector extends through the plug in its extending direction so that the connector is exposed in each of the two insertion recesses.

[0019] In some embodiments of this application, the connecting device is configured as a connecting cable; the connecting cable passes through the sealing body such that both ends of the connecting cable are located on both sides of the sealing body.

[0020] In some embodiments of this application, the sealing device further includes:

[0021] The channel sealing ring is fitted over the outside of the sealing body.

[0022] In some embodiments of this application, the outer side of the sealing body is provided with a retaining groove for the channel sealing ring to be inserted.

[0023] In some embodiments of this application, the number of the channel sealing ring and the retaining ring groove is greater than or equal to 2.

[0024] In some embodiments of this application, the sealing body is constructed as a rotating body.

[0025] In some embodiments of this application, the sealing body is configured as a frustum-shaped cone.

[0026] According to a second aspect of this application, a vibration damper is provided, comprising:

[0027] An air spring having at least one air chamber;

[0028] An actuator is configured to adjust the length of the air spring;

[0029] Electrical devices are installed in the air cavity;

[0030] A sealing device is configured to seal the air cavity;

[0031] The sealing device includes:

[0032] The sealing body is configured to block the wiring channel that connects the air chamber of the air spring to the external space;

[0033] A connecting device is configured to realize the electrical connection of the electrical devices in the spaces on both sides of the wiring channel;

[0034] The sealing body surrounds the connecting device so that the connecting device is disposed inside the sealing body; the sealing body and the connecting device form a sealed connection so that the sealing body and the connecting device are a whole that can isolate the passage of fluid.

[0035] In some embodiments of this application, the actuator includes:

[0036] The housing is configured to have the aforementioned wiring channels;

[0037] The actuator linkage is movably connected to the actuator housing;

[0038] The sealing body is disposed in the wiring channel.

[0039] In some embodiments of this application, the electrical device is configured as a sensor for detecting the movement of the actuator; the sensor is fixedly mounted to the actuator housing.

[0040] In some embodiments of this application, the air spring includes:

[0041] A spring-loaded piston is fixedly connected to the actuator housing.

[0042] The air spring base is fixedly connected to the actuator link;

[0043] A spring bladder is connected to the spring piston and the spring base, respectively.

[0044] The sensor is disposed between the air spring piston and the air spring base.

[0045] In some embodiments of this application, the air spring bladder surrounds the actuator to form at least a portion of the air chamber; the sensor is disposed inside the air spring bladder.

[0046] In some embodiments of this application, the connecting device is configured as a connector that enables electrical connection of electrical devices in the spaces on both sides of the wiring channel; the connector is disposed inside the sealing body.

[0047] In some embodiments of this application, the blocker and the connector together form an insertion groove.

[0048] In some embodiments of this application, the connector is located at the bottom of the insertion groove.

[0049] In some embodiments of this application, two of the said insertion grooves are disposed on opposite sides of the sealing body.

[0050] In some embodiments of this application, the connector extends through the plug in its extending direction so that the connector is exposed in each of the two insertion recesses.

[0051] In some embodiments of this application, the vibration damper further includes:

[0052] An internal cable is configured to connect the sensor to the inside of the connector.

[0053] The air spring piston is provided with an inner cable through hole for the inner cable to pass through.

[0054] In some embodiments of this application, the vibration damper further includes:

[0055] An internal connector is located at the end of the internal cable;

[0056] The internal plug and the connector are electrically connected.

[0057] In some embodiments of this application, the vibration damper further includes:

[0058] An external cable is configured to connect the outside of the connector to an external device.

[0059] The execution housing has an external cable through-hole for the external cable to pass through; the external cable is electrically connected to the connector.

[0060] In some embodiments of this application, the vibration damper further includes:

[0061] An external plug is located at the end of the external cable;

[0062] The external plug and the connector are electrically connected.

[0063] In some embodiments of this application, the connecting device is configured as a connecting cable that enables an electrical connection between the sensor and an external device; the connecting cable passes through the sealing body such that both ends of the connecting cable are located on opposite sides of the sealing body.

[0064] In some embodiments of this application, a wire groove is formed on the outer side of the execution housing; the wire groove forms at least a portion of the wiring channel.

[0065] In some embodiments of this application, the wire groove includes a first extension segment and a second extension segment having different extension directions.

[0066] In some embodiments of this application, the connecting cable passes through the sealing body so that the two ends of the connecting cable are located on both sides of the sealing body.

[0067] In some embodiments of this application, the vibration damper further includes:

[0068] The plug-in terminal forms an electrical connection with the connecting cable for external device plugging.

[0069] In some embodiments of this application, the execution housing is formed with a terminal slot for receiving the plug-in terminal; the terminal slot communicates with the wiring channel so that the connecting cable can extend to the terminal slot.

[0070] In some embodiments of this application, the electrical device is electrically connected to the actuator or the connecting cable.

[0071] In some embodiments of this application, the electrical device includes:

[0072] Electrical components, configured to perform electrical functions;

[0073] The device housing has a first device cavity for accommodating the electrical components;

[0074] The first device cavity is connected to the wiring channel so that the connecting cable and the electrical component are electrically connected.

[0075] In some embodiments of this application, the device housing forms a device channel communicating with the first device cavity; the device channel is disposed between the first device cavity and the wiring channel and communicates with the wiring channel.

[0076] In some embodiments of this application, the device housing forms a second device cavity for accommodating electrical components; the device housing also forms an internal channel communicating with the first device cavity and the second device cavity.

[0077] In some embodiments of this application, the device housing is formed with multiple heat dissipation fins.

[0078] In some embodiments of this application, the vibration damper further includes:

[0079] An electrical sealing ring is configured to seal the gap between the actuator housing and the device housing;

[0080] The electrical sealing ring is disposed between the actuator housing and the device housing.

[0081] In some embodiments of this application, the execution housing has a channel sealing groove on the end face that contacts the device housing to accommodate the electrical sealing ring.

[0082] In some embodiments of this application, the interior of the device housing is filled with a sealing colloid.

[0083] In some embodiments of this application, the vibration damper further includes:

[0084] Connecting bolts are used to secure the device housing to the execution housing;

[0085] The device housing has a through hole; the actuator housing has a fixing screw hole; and the connecting bolt passes through the through hole and is screwed into the fixing screw hole.

[0086] In some embodiments of this application, the air spring bladder is directly connected to the actuator, such that at least a portion of the actuator serves as the piston mechanism of the air spring.

[0087] In some embodiments of this application, the air spring piston includes:

[0088] The piston section is configured to connect to the air spring bladder;

[0089] The sleeve portion is configured to surround at least a portion of the actuator to form a sandwich space around the actuator.

[0090] In some embodiments of this application, the wiring channel is at least partially formed in the interlayer space.

[0091] In some embodiments of this application, the vibration damper further includes:

[0092] Install a flange to form a flange cavity;

[0093] The mounting flange is fixedly installed to the actuator housing.

[0094] In some embodiments of this application, the flange cavity is connected to the wiring channel so that the connecting cable can extend into the flange cavity.

[0095] In some embodiments of this application, the vibration damper further includes:

[0096] An inner support member is disposed within the inner cavity of the flange;

[0097] The inner support member is disposed between the actuator housing and the mounting flange.

[0098] In some embodiments of this application, the end of the sleeve portion abuts against the mounting flange.

[0099] In some embodiments of this application, the vibration damper further includes:

[0100] A flange sealing ring is configured to seal the gap between the sleeve portion and the mounting flange.

[0101] The flange sealing ring is disposed between the sleeve portion and the mounting flange.

[0102] In some embodiments of this application, the sleeve portion is provided with sealing ribs corresponding to the flange sealing ring.

[0103] In some embodiments of this application, the mounting flange is configured to have a first flange housing and a second flange housing;

[0104] The vibration damper also includes:

[0105] The semi-shell sealing ring is configured to seal the gap between the first flange housing and the second flange housing.

[0106] In some embodiments of this application, the mounting flange has a positioning step; the end of the sleeve portion is engaged with the positioning step.

[0107] In some embodiments of this application, the execution housing is formed with a positioning step; the end of the sleeve portion is engaged with the positioning step.

[0108] In some embodiments of this application, the vibration damper further includes:

[0109] A shell sealing ring is configured to seal the gap between the sleeve portion and the actuator housing;

[0110] The shell sealing ring is disposed between the sleeve portion and the actuator housing.

[0111] In some embodiments of this application, the air spring base includes:

[0112] The base positioning ring is configured to be directly fitted onto the actuator link.

[0113] In some embodiments of this application, the vibration damper further includes:

[0114] A connecting rod sealing ring is configured to seal the gap between the connecting rod and the base positioning ring.

[0115] The base positioning ring is provided with a positioning ring groove to accommodate the connecting rod sealing ring.

[0116] In some embodiments of this application, the actuator link and the base positioning ring form an anti-rotation connection.

[0117] In some embodiments of this application, the actuator link is provided with a link step for the base positioning ring to be inserted.

[0118] In some embodiments of this application, the air spring further includes:

[0119] A spring cylinder is fitted onto the outside of the spring sac.

[0120] A support ring is provided to fix the air spring bladder to the air spring cylinder.

[0121] The support ring is disposed inside the air spring bladder; the air spring bladder is at least partially disposed between the support ring and the air spring cylinder.

[0122] In some embodiments of this application, the air spring further includes:

[0123] A dust cover is fixedly installed to the air spring cylinder.

[0124] In some embodiments of this application, the air spring further includes:

[0125] The first pressure ring is configured to fix the air spring bladder to the air spring base.

[0126] In some embodiments of this application, the air spring further includes:

[0127] The second pressure ring is configured to fix the air spring bladder to the actuator housing.

[0128] In some embodiments of this application, the execution housing has a receiving cavity and a housing channel connecting the receiving cavity and the air cavity.

[0129] In some embodiments of this application, the vibration damper further includes:

[0130] An external gasket is used to block the sealing body.

[0131] An external retaining ring is used to stop the external washer;

[0132] The actuator housing is provided with a gasket groove for accommodating the external gasket; the actuator housing is formed with a snap ring groove for accommodating the external snap ring.

[0133] In some embodiments of this application, the execution housing is formed with a sealing groove that accommodates the sealing body and the connecting body as a whole.

[0134] In some embodiments of this application, the vibration damper further includes:

[0135] The channel sealing ring is fitted over the outside of the sealing body.

[0136] According to a third aspect of this application, a suspension assembly is also provided, comprising: a sealing device as described above or a shock absorber as described above.

[0137] According to a fourth aspect of this application, a vehicle is also provided, the vehicle including the shock absorber, the sealing device, or the suspension assembly as described above.

[0138] The embodiments of the present invention can achieve both sealing and electrical connection through the sealing body and connecting device in the above technical solution, which not only ensures the reliability of the seal, but also reduces the difficulty of wiring.

[0139] Other features and advantages of this application will be described in detail in the following detailed description section.

[0140] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0141] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0142] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0143] Figure 1 is a structural schematic diagram of the first suspension assembly provided in an exemplary embodiment of this application;

[0144] Figure 2 is a cross-sectional structural schematic diagram of the suspension assembly provided in the embodiment shown in Figure 1;

[0145] Figure 3 is a partial schematic diagram of the suspension assembly provided in the embodiment shown in Figure 1;

[0146] Figure 4 is a partial schematic diagram of the wiring channel provided in the embodiment shown in Figure 1;

[0147] Figure 5 is a schematic diagram of the overall structure of the sealing body and the connecting body provided in the embodiment shown in Figure 1;

[0148] Figure 6 is a structural schematic diagram of the second suspension assembly provided in an exemplary embodiment of this application;

[0149] Figure 7 is a structural schematic diagram of the suspension assembly provided in the embodiment shown in Figure 6;

[0150] Figure 8 is a cross-sectional view of the suspension assembly provided in the embodiment shown in Figure 6.

[0151] Figure 9 is a partial schematic diagram of the suspension assembly provided in the embodiment shown in Figure 8;

[0152] Figure 10 is a schematic diagram of the overall structure of the sealing body and connecting cable provided in the embodiment shown in Figure 7;

[0153] Figure 11 is a schematic diagram of the overall structure of another sealing body and connecting cable provided in an exemplary embodiment of this application;

[0154] Figure 12 is a schematic diagram of a third suspension assembly structure provided in an exemplary embodiment of this application;

[0155] Figure 13 is a schematic diagram of the internal structure of the suspension assembly shown in Figure 12;

[0156] Figure 14 is a structural schematic diagram of the fourth suspension assembly provided in an exemplary embodiment of this application;

[0157] Figure 15 is a schematic diagram of the suspension assembly shown in Figure 14 after the air springs have been removed.

[0158] Figure 16 is a schematic diagram of the internal structure of the suspension assembly shown in Figure 14;

[0159] Figure 17 is a structural schematic diagram of the fifth suspension assembly provided in an exemplary embodiment of this application;

[0160] Figure 18 is a schematic diagram of the internal structure of the suspension assembly shown in Figure 17;

[0161] Figure 19 is a three-dimensional structural schematic diagram of the first electrical device provided in an exemplary embodiment of this application;

[0162] Figure 20 is a three-dimensional structural diagram of the first type of electrical device shown in Figure 19, viewed from another perspective;

[0163] Figure 21 is a partial schematic diagram of the electrical device shown in Figure 19 after it has been integrated into the actuator housing;

[0164] Figure 22 is a cross-sectional structural diagram of the electrical device shown in Figure 19 after it has been integrated into the actuator housing;

[0165] Figure 23 is a three-dimensional structural schematic diagram of a second electrical device provided in an exemplary embodiment of this application;

[0166] Figure 24 is a three-dimensional structural diagram of the second type of electrical device shown in Figure 23, viewed from another perspective;

[0167] Figure 25 is a partial schematic diagram of the electrical device shown in Figure 23 after it has been integrated into the actuator housing;

[0168] Figure 26 is a cross-sectional structural schematic diagram of the electrical device shown in Figure 23 after it is attached to the actuator housing;

[0169] Figure 27 is a three-dimensional structural diagram of a third electrical device provided in an exemplary embodiment of this application;

[0170] Figure 28 is a three-dimensional structural diagram of the electrical device shown in Figure 27 viewed from another perspective;

[0171] Figure 29 is a partial schematic diagram of the electrical device shown in Figure 27 after it has been integrated into the actuator housing;

[0172] Figure 30 is a cross-sectional structural schematic diagram of the electrical device shown in Figure 27 after it has been integrated into the actuator housing;

[0173] Figure 31 is a structural schematic diagram of a vehicle according to an exemplary embodiment of this application.

[0174] Explanation of reference numerals in the attached drawings: 1. Vehicle; 10. Suspension assembly; 100. Connecting arm; 101. End cap; 102. Mounting bolt; 200. Shock absorber; 200a. Channel; 200b. Sensor; 200c. Wiring harness clamping block; 210. Air spring; 210a. Central axis; 210b. Air chamber; 211. Air spring piston; 211a. Piston part; 211b. Sleeve part; 211c. Interlayer space; 211d. Inner cable through hole; 211e. Sealing rib; 212. Air spring base; 212a. Base positioning ring; 212b. Positioning ring groove; 213. Air spring bladder; 214. Air spring cylinder; 215. Support ring; 216. First pressure ring; 217. Second pressure ring; 218. 219. Dust cover; 220. Connecting bolt; 221. Actuator; 221. Actuator housing; 221a. Receiving cavity; 221b. Positioning step; 221c. Wiring channel; 221d. Gasket slot; 221e. Snap ring slot; 221f. Sealing groove; 221g. External cable through hole; 221h. Housing channel; 221i. Wire channel; 221j. First extension section; 221k. Second extension section; 221l. Channel sealing groove; 221m. Terminal slot; 222. Actuating link; 222a. Link step; 230. Sealing device; 231, sealing body; 231a, retaining ring groove; 231b, insertion groove; 232, connecting device; 233, connecting body; 234, connecting cable; 235, external gasket; 236, external retaining ring; 237, channel sealing ring; 240, electrical device; 241, electrical component; 242, device housing; 242a, first device cavity; 242b, second device cavity; 242c, internal channel; 242d, heat dissipation fin; 242e, protruding structure; 242f, device through hole; 242g, device through hole 250. Connecting terminal; 260. Sealing assembly; 261. Flange seal; 262. Half-shell seal; 263. Shell seal; 264. Connecting rod seal; 265. Electrical seal; 266. Positioning seal; 267. Positioning ring; 270. Mounting flange; 270a. Flange cavity; 271. First flange housing; 272. Second flange housing; 273. Positioning step; 281. Internal cable; 282. Internal plug; 283. External cable; 284. External plug; 290. Internal support. Detailed Implementation

[0175] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0176] In some alternative solutions, the air spring and actuator are integrated as a single unit, but no effective sealing solution is provided if wiring needs to pass through the air chamber of the air spring.

[0177] Referring to Figures 1 to 5, the suspension assembly 10 of some embodiments of this application includes a connecting arm 100 and a shock absorber 200.

[0178] The connecting arm 100 is used to connect directly or indirectly to the wheels of the vehicle 1 (not shown in the figure), thereby transmitting the forces acting on the vehicle 1 to the shock absorber 200. The shock absorber 200 is disposed between the vehicle body and the connecting arm 100, thereby buffering the vibrations transmitted to the vehicle body.

[0179] Referring to Figures 1 to 5, as a specific embodiment, the shock absorber 200 mainly includes: an air spring 210, an actuator 220, a sealing device 230, and an electrical device 240.

[0180] Specifically, the air spring 210 has an air chamber 210b; the actuator 220 is used to adjust the length of the air spring 210; the electrical device 240 can be disposed in the air chamber 210b. As a specific embodiment, the electrical device 240 can be a sensor 200b, which is used to detect the action of the actuator 220. That is, at least a portion of the sensor 200b is disposed in the air chamber 210b of the air spring 210. More specifically, based on the working principle of the sensor, the sensor 200b can be, for example, a Hall sensor or an encoder sensor; based on the detection type of the sensor, the sensor 200b can be a position sensor, etc. Of course, the electrical device 240 can also be other types of sensors or control devices for the actuator 220, etc.

[0181] This effectively utilizes the space inside the air chamber 210b, ensuring the functionality of the electrical device 240 while also providing some protection for it. For example, the sensor 200b can detect the action of the actuator 220 nearby or form wiring and communication nearby. At the same time, the space where the sensor 200b is located is enclosed to prevent dust and other factors from affecting its detection.

[0182] The air chamber 210b of the air spring 210 is mainly used to contain the pressure medium for shock absorption, which is generally a gaseous medium. As an option, the air spring 210 can be equipped with a corresponding valve, such as a solenoid valve, to control the amount of pressure medium in the air chamber 210b of the air spring 210. More specifically, the air spring 210 can be a sleeve-type air spring.

[0183] The actuator 220 can be a cylinder mechanism or a linear motor. Generally, a sensor 200b is installed in the damper 200 to detect the movement of the actuator 220. In a damper 200 that uses a coil spring as the damping element, the coil spring and the sensor 200b are often staggered in the extension and contraction direction of the coil spring to avoid interference. This results in an excessively large overall size and difficult wiring. In a damper 200 that uses an air spring 210 as the damping element, the sensor 200b is often placed outside the air spring 210. However, this makes the sensor 200b very susceptible to external influences, and similar to the damper 200 using a coil spring, it also increases the overall size of the damper 200.

[0184] The technical solution provided in this application covers and protects the sensor 200b by placing the sensor 200b in the air chamber 210b of the air spring 210. At the same time, the size of the shock absorber 200 is reduced due to the spatial overlap between the sensor 200b and the air spring 210.

[0185] Referring to Figures 1 to 5, the sealing device 230 includes a sealing body 231 and a connecting device 232. The sealing body 231 blocks the wiring channel 221c that connects the air chamber 210b of the air spring 210 to the external space. The connecting device 232 is configured to enable electrical connection between the sensor 200b and an external device (not shown in the figures). The sealing body 231 and the connecting device 232 form a sealed connection so that the sealing body 231 and the connecting device 232, as a whole, isolate the air chamber 210b of the air spring 210 from the external space.

[0186] It should be noted that the sealed connection referred to in this application means that there is no channel for the passage of fluids such as gas or liquid between the two components constituting the sealed connection; for example, the sealed connection between the sealing body 231 and the connecting body 233 can be that the sealing body 231 and the connecting device 232 are in direct close contact so that the fluid cannot pass through the contact interface between them, or the sealing body 231 and the connecting device 232 can be indirectly connected into a whole by means of a colloid or the like, so that the various parts are in close contact so that the fluid cannot pass through the contact interface between them.

[0187] By adopting the above-described solution, both sealing and electrical connection can be achieved. This solves the problem that wiring would affect the sealing performance of the air chamber 210b when the sensor 200b is placed in the air chamber 210b of the air spring 210. Furthermore, the fact that the sealing body 231 and the connecting device 232 are integrated as a whole reduces the complexity of wiring, resulting in a high degree of integration for the vibration damper 200 of this application.

[0188] In the embodiments shown in Figures 1 to 5, the connecting device 232 is configured as a connector 233, which is disposed inside the sealing body 231.

[0189] Referring to Figures 1 to 5, the air spring 210 of this application specifically includes: an air spring piston 211, an air spring base 212, an air spring bladder 213, an air spring cylinder 214, a first pressure ring 216, and a second pressure ring 217.

[0190] The air spring base 212 is fixedly connected to the actuating link 222. The air spring base 212 is used to connect to the vehicle body, and multiple connecting bolts 219 are connected to the air spring base 212 to facilitate the connection of the shock absorber 200 to the vehicle body. This is equivalent to setting the connection interface of the shock absorber 200 at the end and reusing the structure with the air spring 210, which facilitates installation and simplifies the structure.

[0191] Multiple connecting bolts 219 can be provided on the top of the air spring base 212 to facilitate its installation to other parts of the vehicle 1.

[0192] The air spring base 212 is fixedly connected to the actuating link 222; the air spring base 212 is used to connect to the vehicle body, and multiple connecting bolts 219 are connected to the air spring base 212 to facilitate the connection of the shock absorber 200 to the vehicle body. This is equivalent to setting the connection interface of the shock absorber 200 at the end and reusing the structure with the air spring 210, which facilitates installation and simplifies the structure.

[0193] The air spring bladder 213 is connected to the air spring piston 211 and the air spring base 212, thereby forming a variable space, namely the air chamber 210b of the air spring 210, inside the air spring bladder 213 and between the air spring piston 211 and the air spring base 212. Gas is introduced into the air chamber 210b as a pressure medium as needed. Thus, when the air spring piston 211 and the air spring base 212 are under pressure, the gas in the air chamber 210b is compressed; and when the pressure on the air spring piston 211 and the air spring base 212 is released, the gas in the air chamber 210b expands.

[0194] As a specific solution, the air spring bladder 213 is made of flexible material. In order to limit the expansion range and direction of the air spring bladder 213, the air spring cylinder 214 is fitted on the outside of the air spring bladder 213.

[0195] As a specific solution, the air spring cylinder 214 is sleeved on the outside of the air spring bladder 213; the air spring cylinder 214 is mainly used to limit the expansion range of the air spring bladder 213.

[0196] As a specific embodiment, referring to Figures 1 and 2, the first pressure ring 216 is configured to fix the air spring bladder 213 to the air spring base 212, and the second pressure ring 217 is used to fix the air spring bladder 213 to the air spring piston 211; the first pressure ring 216 and the second pressure ring 217 can be constructed as clamps. That is, the first pressure ring 216 can clamp the air spring bladder 213 to the air spring piston 211 from the outside, and similarly, the second pressure ring 217 can be used to clamp the air spring bladder 213 to the air spring base 212 from the outside.

[0197] Referring to Figures 1 to 5, the actuator 220 of this application specifically includes: an actuator housing 221 and an actuator link 222.

[0198] The actuator housing 221 has a receiving cavity 221a inside, which can accommodate specific components of the actuator 220 (not shown in the figure). For example, when the actuator 220 is a linear motor, the receiving cavity 221a accommodates the stator part of the linear motor (not shown in the figure).

[0199] Specifically, the actuator housing 221 can be a complete housing, meaning that all parts surrounding the receiving cavity 221a are constituted by the actuator housing 221. Alternatively, the receiving cavity 221a can also be constituted by the actuator housing 221 and other parts. Referring to Figures 1 and 2, as a specific embodiment, the bottom of the actuator housing 221 is open, and the top of the connecting arm 100 forms an end cap 101 with a flange, which is then installed to the actuator housing 221 by mounting bolts 102 to form a complete receiving cavity 221a, while also achieving a fixed connection of the connecting arm 100.

[0200] The actuating link 222 is movably connected to the actuating housing 221. Specifically, the actuating link 222 can move relative to the actuating housing 221, so the actuating link 222 can be used to adjust the length of the air spring 210, or to adjust the length of the entire shock absorber 200 in the damping direction.

[0201] It should be noted that the length of the air spring 210 refers to its dimension in the direction of spring compression and extension. The length direction of the air spring 210 can be considered parallel to or coincident with the direction of movement of the actuator 222.

[0202] The actuator link 222 can be fixedly connected to the air spring base 212. In particular, the air spring base 212 is installed to the end of the actuator link 222, so that when the actuator link 222 slides relative to the actuator housing 221, the actuator link 222 can adjust the position of the air spring base 212, thereby adjusting the suspension height of the vehicle 1.

[0203] More specifically, the air spring piston 211 includes a piston portion 211a and a sleeve portion 211b. The piston portion 211a is used to connect to the air spring bladder 213, for example, the piston portion 211a is fixed to the actuator housing 221 near the air spring base 212; the sleeve portion 211b is configured to surround at least a portion of the actuator 220 to form a sandwich space 211c around the actuator 220, for example, the sleeve portion 211b forms a sleeve structure fitted onto the outside of the actuator housing 221, thereby forming a sandwich space 211c between the sleeve portion 211b and the outer wall of the actuator housing 221.

[0204] The outer wall of the housing 221 has a positioning step 221b; the end of the sleeve portion 211b abuts against the end face of the positioning step 221b.

[0205] To better seal the interlayer space 211c, the vibration damper 200 of this application further includes a positioning ring 267 and a positioning sealing ring 266. Both the positioning ring 267 and the positioning sealing ring 266 are disposed between the sleeve portion 211b and the actuator housing 221. The positioning ring 267 is used to position the sleeve portion 211b relative to the positioning step 221b. The positioning sealing ring 266 is used to seal the interlayer space 211c relative to the outside, thereby preventing gas from escaping along the gap between the sleeve portion 211b and the positioning step 221b.

[0206] In this way, the cable connecting the sensor 200b can be laid along the interlayer space 211c without air leakage in the gap between the sleeve portion 211b and the positioning step 221b. Since the interlayer space 211c can be sealed, the piston portion 211a can have an inner cable through hole 211d for the cable connecting the sensor 200b to pass through, without the need for an additional sealing structure. This allows users to easily lay the cable to connect to the sensor 200b located between the air spring piston 211 and the air spring base 212.

[0207] As a specific solution, a wire harness clamping block 200c is provided on the outside of the housing 221 to position the wire harness in the interlayer space 211c.

[0208] Furthermore, the pressure medium inside the air spring bladder 213 can enter the interlayer space 211c through the inner cable through hole 211d, which can also form a heat exchange with the actuator housing 221 to achieve heat dissipation for the actuator 220.

[0209] More specifically, at least a portion of the actuator housing 221 passes through the air spring piston 211 from inside the air spring bladder 213, and the sensor 200b can be fixedly mounted on the portion of the actuator housing 221 located inside the air spring bladder 213.

[0210] In order to ensure the air spring 210 is sealed, the actuator housing 221 may form the aforementioned wiring channel 221c at its positioning step 221b, and the sealing device 230 of this application shall be provided in the wiring channel 221c.

[0211] Referring to Figures 1 to 5, as a specific embodiment, the shock absorber 200 further includes: an internal cable 281, an internal plug 282, an external cable 283, and an external plug 284.

[0212] One end of the internal cable 281 is connected to an internal plug 282, which is plugged into the sensor 200b. The other end of the internal cable 281 is electrically connected to the connector 233. One end of the external cable 283 is connected to an external plug 284, which is plugged into an external device, such as the controller of the suspension assembly 10. The other end of the external cable 283 is electrically connected to the connector 233.

[0213] In other words, the internal cable 281 is used to connect the sensor 200b to the inner side of the connector 233; the air spring piston 211 is provided with an internal cable through hole 211d for the internal cable 281 to pass through. The internal plug 282 is provided at the end of the internal cable 281; and the internal plug 282 is electrically connected to the connector 233 through the internal cable 281. The external cable 283 is used to connect the outside of the connector 233 to external devices; the actuator housing 221 is formed with an external cable through hole 221g for the external cable 283 to pass through; the external cable 283 is electrically connected to the connector 233; the external plug 284 is provided at the end of the external cable 283; the external plug 284 is electrically connected to the connector 233 through the external cable 283.

[0214] In this way, the sealing body 231 and the connecting body 233 can be pre-installed in the wiring channel 221c of the execution housing 221, and the internal cable 281 and the external cable 283 can be electrically connected to the connecting body 233 respectively. Then, the internal plug 282 is plugged into the sensor 200b, and the external plug 284 is connected to external devices (such as controllers or buses). This avoids the instability and cumbersome procedures caused by temporary sealing during installation. Furthermore, by standardizing the sealing body 231 and the connecting body 233, different specifications of internal cables 281 and external cables 283 can also be plugged in.

[0215] The two sides of the connector 233 can be connected to conductive materials such as cables, so that the connector 233 can conduct electricity while the sealing body 231 can achieve sealing.

[0216] The connector 233 is located inside the sealing body 231, which not only achieves insulation but also provides a certain buffer for the conductive connection, ensuring the stability of the electrical connection.

[0217] Referring to Figures 1 to 5, as a specific embodiment, the sealing device 230 further includes: an external gasket 235, an external snap ring 236, and multiple channel sealing rings 237.

[0218] The cable routing channel 221c is divided into a gasket slot 221d, a spring clip slot 221e, a sealing body slot 221f, and an external cable channel 221g. An external gasket 235 is used to stop the sealing body 231; an external spring clip 236 is used to stop the external gasket 235. The external gasket 235 is located in the gasket slot 221d; the external spring clip 236 is located in the spring clip slot 221e. The sealing body 231 is located in the sealing body slot 221f. Specifically, the sealing body slot 221f is a stepped slot, meaning that the sealing body 231 is limited inward by the stepped structure of the sealing body slot 221f, and outward by the external gasket 235 and the external slot. Because the position of the sealing body 231 needs to be maintained, an external spring clip 236 is used to ensure a certain preload. The channel sealing ring 237 is used to achieve a seal between the channel wall of the wiring channel 221c and the sealing body 231. These channel sealing rings 237 are fitted onto the outside of the sealing body 231. As a specific embodiment, the outer periphery of the sealing body 231 is provided with one or more retaining grooves 231a, into which the channel sealing ring 237 can be embedded, thereby effectively positioning the channel sealing ring 237.

[0219] Referring to Figures 1 to 5, as a specific embodiment, the connector 233 is disposed inside the sealing body 231; the sealing body 231 and the connector 233 together form an insertion groove 231b; the connector 233 is disposed at the bottom of the insertion groove 231b.

[0220] As a specific solution, the plugging body 231 itself may form a plugging groove 231b, and the connecting body 233 may serve as the bottom surface of the plugging groove 231b; or, the connecting body 233 itself may form a plugging groove 231b.

[0221] As a specific solution, the insertion groove 231b can be a stepped groove, that is, its cross-sectional shape is part of a rectangle. As an optional solution, the insertion groove 231b can also be a curved groove, that is, its cross-sectional shape is an arc or other curve.

[0222] The insertion groove 231b ensures both the connection area and effective centering and positioning during connection.

[0223] This ensures the connection effect and stability between connector 233 and internal cable 281 and external cable 283.

[0224] As a more specific solution, two insertion grooves 231b are provided on opposite sides of the sealing body 231; the connecting body 233 extends through the sealing body 231 in its extending direction so that the connecting body 233 is exposed in the two insertion grooves 231b respectively, which facilitates the user to make the connection.

[0225] The sealing body 231 can be made of insulating material, and the connecting device 232 can be made of conductive material. In this way, the sealing body 231 can not only achieve sealing but also provide insulation.

[0226] Referring to Figures 1 and 2, the external cable channel 221g of the vibration damper 200 extends radially R, and the routing direction of its external cable is also radially extended. Here, radial refers to the axial direction with reference to the central axis 210a of the air spring 210.

[0227] Referring to FIG6, another embodiment of the suspension assembly 10 provided in this application differs from the suspension assemblies 10 shown in FIGS. 1 to 3 in that the external cable channel 221g of the shock absorber 200 extends along the tangential direction Q, and the routing direction of its external cable also extends along the tangential direction. The tangential direction referred to here is the tangential direction of the virtual cylindrical surface when the central axis 210a of the air spring 210 is taken as the axis of rotation of the virtual cylindrical surface.

[0228] Figures 7 to 10 show the suspension assembly 10 of the second embodiment provided in this application (connecting arm 100 is not shown in the figures).

[0229] The difference between this suspension assembly 10 and the suspension assemblies 10 shown in Figures 1 to 3 lies in the specific design of the sealing device 230.

[0230] Specifically, in the suspension assembly 10 shown in Figures 7 to 10, the connecting device 232 is configured as a connecting cable 234; wherein, the connecting cable 234 is used to realize the electrical connection between the sensor 200b and the external device. The connecting cable 234 passes through the sealing body 231, such that the two ends of the connecting cable 234 are respectively located on both sides of the sealing body 231. The sealing body 231 and the cable form a sealed connection so that the sealing body 231 and the connecting cable 234 as a whole isolate the air chamber 210b of the air spring 210 from the external space.

[0231] The connecting cable 234 passes through the sealing body 231, with one end located inside the air cavity 210b and the other end located outside the air cavity 210b. To improve the sealing effect around the sealing body 231, the sealing device 230 also includes multiple channel sealing rings 237. These channel sealing rings 237 are fitted onto the outside of the sealing body 231.

[0232] This approach simplifies the construction of the sealing device 230, although it sacrifices some versatility, it reduces the number of wiring steps.

[0233] Referring to Figures 7 to 10, the external cable channel 221g formed by the actuator housing 221 in the suspension assembly 10 shown in Figures 7 to 10 extends along the axial direction A, and the connecting cable 234 also extends axially within the sealing body 231. Here, radial direction refers to the direction with the central axis 210a of the air spring 210 as an axial reference.

[0234] Referring to Figures 7 to 10, in some embodiments of this application, the sealing body is constructed as a body of revolution. For example, the sealing body is constructed as a frustum-shaped cone. This facilitates the installation of the sealing body 231.

[0235] Optionally, in some embodiments of this application, the number of channel sealing rings and retaining ring grooves is greater than or equal to 2. This further ensures the sealing effect.

[0236] The sealing groove (not shown) of the positioning step 221b in the suspension assembly 10 shown in Figures 7 to 10 is open upwards. The positioning step restricts the sealing body 231 from below, and then it is fixed above by an external gasket 235 and an external retaining ring 236. When wiring, the connecting cable 234 can be led out first, and then the sleeve part 211b can be fixed to the positioning step 221b.

[0237] Figures 12 and 13 show the suspension assembly 10 of the third embodiment provided in this application.

[0238] The main difference between this suspension assembly 10 and the suspension assemblies 10 shown in Figures 7 to 10 is that the shock absorber 200 also includes: a plug terminal 250, a sealing assembly 260, a mounting flange 270, and an inner support member 290.

[0239] The damper 200 has a wiring channel 221c formed between the air spring 210 and the actuator 220 for the connecting cable 234 to pass through. To allow the connecting cable 234 to enter the air chamber 210b, the air chamber 210b of the air spring 210 is connected to the wiring channel 221c. Furthermore, the sealing assembly 260 of this application isolates the air chamber 210b of the air spring 210 from the external space.

[0240] In order to enable external devices to be connected to electrical device 240, the vibration damper 200 of this application is provided with plug-in terminal 250, which is electrically connected to the connecting cable 234 for external devices to be plugged in.

[0241] Referring to Figure 4, as a specific embodiment, a wire groove 221i is formed on the outer side of the housing 221; the wire groove 221i forms at least a portion of the wiring channel 221c. Furthermore, the wire groove 221i includes a first extension segment 221j and a second extension segment 221k having opposite extending directions. More specifically, the extending directions of the first extension segment 221j and the second extension segment 221k intersect perpendicularly. In this way, the connecting cable 234 can be routed along the wiring channel 221c to the corresponding circumferential position.

[0242] Referring to Figures 12 and 13, in order to seal the interlayer space 211c by closing the ends of the actuator housing 221 and the air spring piston 211, the damper 200 of this application is provided with a mounting flange 270. The mounting flange 270 forms a flange cavity 270a and is fixedly mounted to the actuator housing 221. The mounting flange 270 can effectively connect the plug terminal 250 to the whole formed by the air spring 210 and the actuator 220.

[0243] The flange cavity 270a is connected to the wiring channel 221c so that the connecting cable 234 can extend into the flange cavity 270a; the end of the sleeve portion 211b abuts against the mounting flange 270; more specifically, the mounting flange 270 is formed with a positioning step 273; the end of the sleeve portion 211b is engaged with the positioning step 273.

[0244] The above structure allows for wiring of the mounting flange 270 and provides a relatively stable and reliable positioning for the air spring piston 211.

[0245] To achieve a seal, the sealing assembly 260 includes a flange sealing ring 261. The flange sealing ring 261 seals the gap between the sleeve portion 211b and the mounting flange 270; wherein, the flange sealing ring 261 is disposed between the sleeve portion 211b and the mounting flange 270. To achieve a better seal, the sleeve portion 211b has a sealing rib 211e corresponding to the flange sealing ring 261 inside, and the sealing rib 211e contacts the flange sealing ring 261 to ensure sealing performance.

[0246] As a specific embodiment, the mounting flange 270 is constructed with a first flange housing 271 and a second flange housing 272, that is, the mounting flange 270 is constructed as a two-part structure, which can form a complete mounting flange 270 by mating the first flange housing 271 and the second flange housing 272. To achieve a seal between the first flange housing 271 and the second flange housing 272, the sealing assembly 260 also includes a half-shell sealing ring 262, which is used to seal the gap between the first flange housing 271 and the second flange housing 272; wherein, the half-shell sealing ring 262 is disposed between the first flange housing 271 and the second flange housing 272. The two-part structure facilitates installation and disassembly.

[0247] Referring to FIG13, the inner support member 290 is disposed in the inner cavity 270a of the flange; wherein, the inner support member 290 is disposed between the actuator housing 221 and the mounting flange 270.

[0248] Referring to Figure 13, the mounting flange 270 is provided with a through hole for the plug-in terminal 250 to pass through the wall of the mounting flange 270. It should be noted that the plug-in terminal and the mounting flange 270 can be sealed by means of a sealing ring or potting.

[0249] Referring to FIG13, the air spring base 212 includes a base positioning ring 212a, which may be made of metal material. The base positioning ring 212a is used to directly fit onto the actuating link 222. The sealing assembly 260 also includes a link sealing ring 264. The link sealing ring 264 is used to seal the gap between the link and the base positioning ring 212a. Furthermore, the base positioning ring 212a is provided with a positioning ring groove 212b for receiving the link sealing ring 264. That is, the link sealing ring 264 is received in the positioning ring groove 212b, so that the actuating link 222 can have a smooth surface. More specifically, the actuating link 222 and the base positioning ring 212a form an anti-rotation connection; the actuating link 222 is provided with a link step 222a for the base positioning ring 212a to be inserted, and an anti-rotation structure (not shown in the figure) is also provided between the actuating link 222 and the base positioning ring 212a to prevent them from rotating, such as a spline or a groove and a protrusion that cooperate with each other. This prevents relative rotation of the actuating link 222 relative to the air spring base 212.

[0250] Referring to FIG13, the execution housing 221 has a housing channel 221h that connects the receiving cavity 221a and the air cavity 210b, which enables the components in the receiving cavity 221a of the execution housing 221 to be cooled.

[0251] Referring to Figures 12 and 13, in a more specific embodiment, the air spring 210 further includes a support ring 215 and a dust cover 218. The air spring cylinder 214 is fitted over the outer side of the air spring bladder 213; the support ring 215 is configured to fix the air spring bladder 213 to the air spring cylinder 214; the support ring 215 is disposed inside the air spring bladder 213; the air spring bladder 213 is at least partially disposed between the support ring 215 and the air spring cylinder 214. The air spring cylinder 214 primarily limits the expansion range of the air spring bladder 213. The dust cover 218 is fixedly installed to the air spring cylinder 214, and its main function is to prevent foreign objects from entering the folds of the air spring bladder 213.

[0252] Figures 14, 15, and 16 show the fourth type of suspension assembly 10 provided in this application. The difference between this and the third type of suspension assembly 10 shown in Figures 12 and 13 is that the mounting flange 270 is eliminated. Instead, the positioning step 273 is directly formed by the actuator housing 221, and the actuator housing 221 directly forms a terminal groove 221m to accommodate the plug-in terminal 250 and a through hole (not shown) for the plug-in terminal 250 to be exposed. That is, the actuator housing 221 forms the terminal groove 221m; the terminal groove 221m communicates with the wiring channel 221c so that the connecting cable 234 can extend to the plug-in terminal 250 in the terminal groove 221m; in addition, to prevent leakage from the through hole through which the plug-in terminal 250 passes, a sealing ring (not shown) or potting compound can be provided in the terminal groove 221m to ensure a sealing effect. This eliminates the need for the mounting flange 270, thereby improving the structural integration and reducing installation difficulty.

[0253] Referring to Figure 16, in order to seal the air chamber 210b, a shell sealing ring 263 is provided between the actuator housing 221 and the sleeve portion 211b in the fourth type of suspension assembly 10. The shell sealing ring 263 is used to seal the gap between the sleeve portion 211b and the actuator housing 221. To ensure the sealing effect, multiple shell sealing rings 263 can be provided. Compared with the third type of suspension assembly 10, the fourth type of suspension assembly 10 only needs to seal the space between the actuator housing 221 and the air spring piston 211 to achieve the sealing of the air chamber 210b, and the structure is more reliable.

[0254] Figures 17 and 18 show the fifth type of suspension assembly 10 provided in this application. The difference between this and the fourth type of suspension assembly 10 shown in Figures 14 to 16 is that the air spring piston 211 is eliminated; instead, the actuator housing 221 of the actuator 220 serves as the air spring piston 211. Specifically, the air spring bladder 213 of the air spring 210 is directly connected to the actuator 220. Simultaneously, the actuator housing 221 directly forms the wiring channel 221c, thus reducing the complexity of the sealing assembly 260.

[0255] When the scheme shown in Figures 17 and 18 is adopted, the second pressure ring 217 directly fixes the air spring bladder 213 to the actuator housing 221.

[0256] When using the scheme shown in Figures 17 and 18, it is only necessary to effectively seal the end of the wiring channel 221c (that is, the part that connects with the electrical device 240) to achieve effective sealing of the air chamber 210b.

[0257] Figures 19 to 22 show the first type of electrical device 240 provided in this application. The electrical device 240 is electrically connected to the connecting device 232 of the actuator 220 or the sealing device 230. Specifically, it includes an electrical component 241 and a device housing 242. The electrical component 241 is used to realize electrical functions, such as the probe of a magnetic encoder. The device housing 242 has a first device cavity 242a for accommodating the electrical component 241. The first device cavity 242a is connected to the wiring channel 221c so that the connecting cable 234 is electrically connected to the electrical component 241.

[0258] Referring to Figures 19 to 22, in a more specific embodiment, the device housing 242 forms a device channel 242g that communicates with the first device cavity 242a; the device channel 242g is disposed between the first device cavity 242a and the wiring channel 221c and communicates with the wiring channel 221c; that is, the first device cavity 242a and the wiring channel 221c are indirectly connected.

[0259] To achieve a sealing effect, the sealing assembly 260 also includes an electrical sealing ring 265; the electrical sealing ring 265 is used to seal the gap between the actuator housing 221 and the device housing 242. The electrical sealing ring 265 is disposed between the actuator housing 221 and the device housing 242; wherein the actuator housing 221 has a channel sealing groove 221l for accommodating the electrical sealing ring 265 on the end face that contacts the device housing 242.

[0260] Furthermore, the interior of the device housing 242 can be filled with sealing glue through methods such as potting, thereby sealing both the chamber and the passage of the electrical device 240.

[0261] In addition, in order to install the electrical device 240 to the actuator housing 221, the vibration damper 200 also includes: a connecting bolt (not shown in the figure); the connecting bolt is used to fix the device housing 242 to the actuator housing 221; wherein the device housing 242 is formed with a device through hole 242f; the actuator housing 221 is formed with a fixing screw hole; the connecting bolt passes through the device through hole 242f and is screwed into the fixing screw hole.

[0262] The device housing 242 has a device through hole 242f; the actuator housing 221 has a fixing screw hole; the connecting bolt passes through the device through hole 242f and is screwed into the fixing screw hole; this allows the electrical device 240 to be installed securely.

[0263] Figures 23 to 26 show the second type of electrical device 240 provided in this application. The difference between the second type of electrical device 240 and the first type of electrical device 240 shown in Figures 8 to 11 is that the device housing 242 of the second type of electrical device 240 forms a second device cavity 242b for accommodating electrical components 241; the device housing 242 also forms an internal channel 242c that communicates with the first device cavity 242a and the second device cavity 242b.

[0264] Figures 27 to 30 show the third type of electrical device 240 provided in this application. The difference between the third type of electrical device 240 and the first type shown in Figures 12 to 15 is that the device housing 242 of the third type of electrical device 240 has multiple heat dissipation ribs 242d, which are disposed between the two parts of the device housing 242 forming the first device cavity 242a and the second device cavity 242b. This technique can effectively reduce the amount of material used in the device housing 242, while also reducing the thermal expansion and contraction of the device housing 242.

[0265] Referring to FIG28, as a specific embodiment, the end face where the device housing 242 and the execution housing 221 are mated is provided with a plurality of protruding structures 242e made of metal material; the protruding structures 242e can be constructed in the form of metal inserts, thereby ensuring the connection strength between the device housing 242 and the execution housing 221.

[0266] As another aspect of this application, this application may also provide a sealing device 230, which may also be applied to other working scenarios similar to the above-described shock absorber 200.

[0267] Specifically, the sealing device 230 includes a sealing body 231 and a connecting device 232. The sealing body 231 is used to seal the channel 200a in which it is located (i.e., the wiring channel 221c mentioned above); the connecting device 232 is used to realize the electrical connection of the electrical devices 240 in the space on both sides of the channel 200a.

[0268] The sealing body 231 and the connecting body 233 form a sealed connection so that the sealing body 231 and the connecting body 233, as a whole, isolate the fluid flow on both sides of the channel 200a. The sealing device 230 can also adopt the specific scheme mentioned above.

[0269] In other words, in the embodiments provided above in this application, the sealing body 231 surrounds the connecting device 232 so that the connecting device 232 is disposed inside the sealing body 231; the sealing body 231 and the connecting device 232 form a sealed connection so that the sealing body 231 and the connecting device 232 are a whole that can isolate the passage of fluid.

[0270] In the embodiments shown in Figures 1 to 5, the connecting device 232 is configured as a connector 233; the connector 233 is disposed inside the sealing body 231.

[0271] In the embodiments shown in Figures 7 to 10, the connecting device 232 is configured as a connecting cable 234; the connecting cable 234 passes through the sealing body 231 so that the two ends of the connecting cable 234 are located on both sides of the sealing body 231.

[0272] Referring to Figure 11, the sealing body 231 can be provided with multiple retaining grooves 231a to position multiple channel sealing rings 237.

[0273] Referring to FIG31, this application provides a vehicle 1, which may include the above-described shock absorber 200, sealing device 230 or suspension assembly 10.

[0274] The vehicle 1 can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions on it.

[0275] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0276] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0277] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0278] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A sealing device (230) for use in a vehicle, The sealing device (230) includes: The blocking body (231) is configured to block the channel (200a) in which it is located; The connecting device (232) is configured to realize the electrical connection of the electrical devices (240) in the spaces on both sides of the channel (200a); The sealing body (231) surrounds the connecting device (232) so that the connecting device (232) is located inside the sealing body (231); the sealing body (231) and the connecting device (232) form a sealed connection so that the sealing body (231) and the connecting device (232) are a whole that can isolate the passage of fluid.

2. The sealing device (230) according to claim 1, wherein, The plug (231) is made of at least an insulating material.

3. The sealing device (230) according to claim 1 or 2, wherein, The connecting device (232) is made of at least a conductive material.

4. The sealing device (230) according to any one of claims 1 to 3, wherein, The connecting device (232) is configured as a connector (233); the connector (233) is disposed inside the sealing body (231).

5. The sealing device (230) according to claim 4, wherein, The sealing body (231) and the connecting body (233) together form an insertion groove (231b); And / or, the sealing body (231) is formed with an insertion groove (231b); And / or, the connector (231) is formed with a insertion groove (231b).

6. The sealing device (230) according to claim 5, wherein, The connector (233) is located at the bottom of the insertion groove (231b).

7. The sealing device (230) according to claim 6, wherein, The two insertion grooves (231b) are disposed on opposite sides of the sealing body (231).

8. The sealing device (230) according to claim 7, wherein, The connector (233) extends through the plug (231) in its extending direction, so that the connector (233) is exposed in each of the two insertion grooves (231b).

9. The sealing device (230) according to any one of claims 1 to 3, wherein, The connecting device (232) is configured as a connecting cable (234); the connecting cable (234) passes through the sealing body (231) such that the two ends of the connecting cable (234) are located on both sides of the sealing body (231).

10. The sealing device (230) according to any one of claims 1 to 9, wherein, The sealing device (230) further includes: The channel sealing ring (237) is fitted over the outside of the plug (231).

11. The sealing device (230) according to claim 10, wherein, The sealing body (231) has a retaining groove (231a) on its outer side for the channel sealing ring (237) to be inserted.

12. The sealing device (230) according to claim 11, wherein, The number of the channel sealing ring (237) and the retaining ring groove (231a) is greater than or equal to 2.

13. The sealing device (230) according to any one of claims 1 to 12, wherein, The plug (231) is constructed as a rotating body.

14. The sealing device (230) according to claim 13, wherein, The sealing body (231) is constructed as a frustum conical body.

15. A vibration damper (200), comprising: An air spring (210) having at least one air chamber (210b); Actuator (220) is configured to adjust the length of the air spring (210); An electrical device (240) is disposed in the air chamber (210b); A sealing device (230) is configured to seal the air chamber (210b); The sealing device (230) includes: The sealing body (231) is configured to block the wiring channel (221c) that connects the air chamber (210b) of the air spring (210) to the external space; The connecting device (232) is configured to realize the electrical connection of the electrical device (240) in the space on both sides of the wiring channel (221c); The sealing body (231) surrounds the connecting device (232) so that the connecting device (232) is disposed inside the sealing body (231); the sealing body (231) and the connecting device (232) form a sealed connection so that the sealing body (231) and the connecting device (232) are a whole that can isolate the passage of fluid.

16. The vibration damper (200) according to claim 15, wherein, The actuator (220) includes: The housing (221) is formed with the wiring channel (221c); An actuating link (222) is movably connected to the actuating housing (221); The sealing body (231) is disposed in the wiring channel (221c).

17. The vibration damper (200) according to claim 16, wherein, The electrical device (240) is configured as a sensor (200b) for detecting the action of the actuator (210); the sensor (200b) is fixedly mounted to the actuator housing (221).

18. The vibration damper (200) according to claim 16 or 17, wherein, The air spring (210) includes: A spring-loaded piston (211) is fixedly connected to the actuator housing (221); The air spring base (212) is fixedly connected to the actuating link (222); The air spring bladder (213) is connected to the air spring piston (211) and the air spring base (212), respectively; The sensor (200b) is disposed between the air spring piston (211) and the air spring base (212).

19. The vibration damper (200) according to claim 18, wherein, The air spring bladder (213) surrounds the actuator (220) to form at least a portion of the air chamber (210b); the sensor (200b) is disposed inside the air spring bladder (213).

20. The vibration damper (200) according to claim 18, wherein, The connecting device (232) is configured as a connector (233) to realize the electrical connection of the electrical device (240) in the space on both sides of the wiring channel (221c); the connector (233) is disposed inside the sealing body (231).

21. The vibration damper (200) according to claim 20, wherein, The sealing body (231) and the connecting body (233) together form an insertion groove (231b).

22. The vibration damper (200) according to claim 21, wherein, The connector (233) is located at the bottom of the insertion groove (231b).

23. The vibration damper (200) according to claim 21 or 22, wherein, The two insertion grooves (231b) are disposed on opposite sides of the sealing body (231).

24. The vibration damper (200) according to claim 23, wherein, The connector (233) extends through the plug (231) in its extending direction, so that the connector (233) is exposed in each of the two insertion grooves (231b).

25. The vibration damper (200) according to any one of claims 20 to 24, further comprising: An internal cable (281) is configured to connect the sensor (200b) to the inside of the connector (233); The air spring piston (211) is provided with an inner cable through hole (211d) for the inner cable (281) to pass through.

26. The vibration damper (200) according to claim 25, further comprising: An internal connector (282) is provided at the end of the internal cable (281); The internal plug (282) and the connector (233) are electrically connected.

27. The vibration damper (200) according to any one of claims 20 to 26, further comprising: An external cable (283) is configured to connect the outside of the connector (233) to an external device; The execution housing (221) has an external cable through hole (221g) for the external cable (283) to pass through; the external cable (283) and the connector (233) are electrically connected.

28. The vibration damper (200) according to claim 27, further comprising: An external plug (284) is disposed at the end of the external cable (283); The external plug (284) and the connector (233) are electrically connected.

29. The vibration damper (200) according to any one of claims 16 to 19, wherein, The connecting device (232) is configured as a connecting cable (234) for electrically connecting the sensor (200b) to an external device; the connecting cable (234) passes through the sealing body (231) such that the two ends of the connecting cable (234) are located on both sides of the sealing body (231).

30. The vibration damper (200) according to claim 29, wherein, A wire groove (221c) is formed on the outer side of the execution housing (221); the wire groove (221c) forms at least a portion of the wiring channel (221c).

31. The vibration damper (200) according to claim 30, wherein, The wire groove (221c) includes a first extension segment (221d) and a second extension segment (221e) having different extension directions.

32. The vibration damper (200) according to any one of claims 29 to 31, wherein, The connecting cable (234) passes through the sealing body (231) so that the two ends of the connecting cable (234) are located on both sides of the sealing body (231).

33. The vibration damper (200) according to any one of claims 29 to 32, further comprising: The plug-in terminal (250) forms an electrical connection with the connecting cable (230) for plugging in external devices.

34. The vibration damper (200) according to claim 33, wherein, The execution housing (221) is formed with a terminal slot (221m) for accommodating the plug-in terminal (250); the terminal slot (221m) is connected to the wiring channel (221c) so that the connecting cable (230) can extend to the terminal slot (221m).

35. The vibration damper (200) according to any one of claims 29 to 34, wherein, The electrical device (240) is electrically connected to the actuator (220) or the connecting cable (230).

36. The vibration damper (200) according to claim 35, wherein, The electrical device (240) includes: Electrical component (241), configured to perform electrical functions; The device housing (242) has a first device cavity (242a) for accommodating the electrical component (241); The first device cavity (242a) is connected to the wiring channel (221c) so that the connecting cable (230) and the electrical component (241) are electrically connected.

37. The vibration damper (200) according to claim 36, wherein, The device housing (242) has a device channel (242g) that communicates with the first device cavity (242a); the device channel (242g) is disposed between the first device cavity (242a) and the wiring channel (221c) and communicates with the wiring channel (221c).

38. The vibration damper (200) according to claim 36 or 37, wherein, The device housing (242) has a second device cavity (242b) for accommodating an electrical component (241); the device housing (242) also has an internal channel (242c) communicating with the first device cavity (242a) and the second device cavity (242b).

39. The vibration damper (200) according to any one of claims 36 to 38, wherein, The device housing (242) has multiple heat dissipation fins (242d).

40. The vibration damper (200) according to any one of claims 36 to 39, further comprising: An electrical sealing ring (265) is configured to seal the gap between the actuator housing (221) and the device housing (242); The electrical sealing ring (265) is disposed between the actuator housing (221) and the device housing (242).

41. The vibration damper (200) according to claim 40, wherein, The actuator housing (221) has a channel sealing groove (221f) on the end face that contacts the device housing (242) to accommodate the electrical sealing ring (265).

42. The vibration damper (200) according to any one of claims 36 to 41, wherein, The device housing (242) is filled with a sealing colloid.

43. The vibration damper (200) according to any one of claims 36 to 42, further comprising: Connecting bolts are used to fix the device housing (242) to the actuator housing (221); The device housing (242) has a device through hole (242f); the execution housing (221) has a fixing screw hole; the connecting bolt passes through the device through hole (242f) and is screwed into the fixing screw hole.

44. The vibration damper (200) according to any one of claims 18 to 43, wherein, The air spring bladder (213) is directly connected to the actuator (220) such that at least a portion of the actuator (220) serves as a piston mechanism for the air spring (210).

45. The vibration damper (200) according to claim 44, wherein, The air spring piston (211) includes: The piston part (211a) is configured to connect to the air spring body (213); The sleeve portion (211b) is configured to surround at least a portion of the actuator (220) to form a sandwich space (211c) around the actuator (220).

46. ​​The vibration damper (200) according to claim 45, wherein, The wiring channel (221c) is at least partially formed in the interlayer space (211c).

47. The vibration damper (200) according to claim 45 or 46 further comprises: Mounting flange (270), forming a flange cavity (270a); The mounting flange (270) is fixedly installed to the actuator housing (221).

48. The vibration damper (200) according to claim 47, wherein, The flange cavity (270a) is connected to the wiring channel (221c) so that the connecting cable (230) can extend into the flange cavity (270a).

49. The damper (200) according to claim 47 or 48 further comprises: An inner support member (290) is disposed in the inner cavity (270a) of the flange; The inner support member (290) is disposed between the execution housing (221) and the mounting flange (270).

50. The vibration damper (200) according to any one of claims 48 to 49, wherein, The end of the sleeve portion (211b) abuts against the mounting flange (270).

51. The vibration damper (200) according to any one of claims 47 to 50, further comprising: A flange sealing ring (261) is configured to seal the gap between the sleeve portion (211b) and the mounting flange (270); The flange sealing ring (261) is disposed between the sleeve portion (211b) and the mounting flange (270).

52. The vibration damper (200) according to claim 51, wherein, The sleeve portion (211b) is provided with a sealing rib (211e) corresponding to the flange sealing ring (261).

53. The vibration damper (200) according to any one of claims 47 to 52, wherein, The mounting flange (270) is configured to have a first flange housing (271) and a second flange housing (272); The vibration damper (200) also includes: The semi-shell sealing ring is configured to seal the gap between the first flange housing (271) and the second flange housing (272).

54. The vibration damper (200) according to any one of claims 47 to 53, wherein, The mounting flange (270) has a positioning step (273); the end of the sleeve portion (211b) is engaged with the positioning step (273).

55. The vibration damper (200) according to any one of claims 16 to 53, wherein, The actuator housing (221) has a positioning step (273); the end of the sleeve portion (211b) is engaged with the positioning step (273).

56. The vibration damper (200) according to any one of claims 45 to 55, further comprising: The shell sealing ring (263) is configured to seal the gap between the sleeve portion (211b) and the actuator housing (221); The shell sealing ring (263) is disposed between the sleeve portion (211b) and the actuator housing (221).

57. The vibration damper (200) according to any one of claims 18 to 56, wherein, The air spring base (212) includes: The base positioning ring (212a) is configured to be directly fitted onto the actuator link (222).

58. The vibration damper (200) according to claim 57, further comprising: The connecting rod sealing ring (264) is configured to seal the gap between the connecting rod and the base positioning ring (212a); The base positioning ring (212a) is provided with a positioning ring groove (212b) for accommodating the connecting rod sealing ring.

59. The vibration damper (200) according to claim 57 or 58, wherein, The actuator link (222) and the base positioning ring (212a) form an anti-rotation connection.

60. The vibration damper (200) according to any one of claims 57 to 59, wherein, The actuator link (222) is provided with a link step (222a) for the base positioning ring (212a) to be inserted.

61. The vibration damper (200) according to any one of claims 18 to 60, wherein, The air spring (210) also includes: The air spring cylinder (214) is sleeved on the outside of the air spring sac (213); A support ring (215) is configured to fix the air spring bladder (213) to the air spring cylinder (214); The support ring (215) is disposed inside the air spring body (213); the air spring body (213) is at least partially disposed between the support ring (215) and the air spring cylinder (214).

62. The vibration damper (200) according to any one of claims 18 to 61, wherein, The air spring (210) also includes: A dust cover (218) is fixedly installed to the air spring cylinder (214).

63. The vibration damper (200) according to any one of claims 18 to 62, wherein, The air spring (210) also includes: The first pressure ring (216) is configured to fix the air spring body (213) to the air spring base (212).

64. The vibration damper (200) according to any one of claims 18 to 63, wherein, The air spring (210) also includes: The second pressure ring (217) is configured to fix the air spring bladder (213) to the actuator housing (221).

65. The vibration damper (200) according to any one of claims 16 to 64, wherein, The execution housing (221) has a receiving cavity (221a) and a housing channel (221h) connecting the receiving cavity (221a) and the air cavity (210a).

66. The vibration damper (200) according to any one of claims 16 to 65, further comprising: An external gasket (235) is provided to stop the sealing body (231); An external retaining ring (236) is provided to stop the external washer (235); The actuator housing (221) is provided with a gasket groove (221d) for accommodating the external gasket (235); the actuator housing (221) is formed with a snap ring groove (221e) for accommodating the external snap ring (236).

67. The vibration damper (200) according to any one of claims 16 to 66, wherein, The execution housing (221) is formed with a sealing groove (221f) that accommodates the sealing body (231) and the connecting body (233) as a whole.

68. The vibration damper (200) according to any one of claims 15 to 67, further comprising: The channel sealing ring (237) is fitted over the outside of the plug (231).

69. A suspension assembly (10), comprising: The sealing device (230) according to any one of claims 1 to 14, or the vibration damper (200) according to any one of claims 15 to 68.

70. A vehicle (1), comprising: The sealing device (230) according to any one of claims 1 to 14, or the shock absorber (200) according to any one of claims 15 to 68, or the suspension assembly (10) according to claim 69.

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