CN218805056U - Double-cavity air spring and automobile - Google Patents

Abstract

The utility model belongs to the technical field of automobile design and manufacturing, especially, relate to a two-chamber air spring and car. This two-chamber air spring includes: the upper seat is connected with the automobile frame and comprises an upper seat partition plate, the inner space of the upper seat is divided into a first air chamber and a combined space with an opening, and a communication port for communicating the first air chamber with the combined space is formed in the upper seat partition plate; the first end of the air bag is connected with the circumferential outer wall of the opening; the vibration damping motion structure is provided with a first end and a second end which can mutually extend and slide, the first end penetrates through the air bag to be connected to the upper seat, and the second end is used for being connected to an automobile hub; and the valve assembly is arranged at the communication port and is used for communicating or closing the communication port. Use the technical scheme of the utility model can make two-chamber air spring not only can be adapted to urban road's road conditions, also can be adapted to the road conditions of traveling that the hollow jolted, guaranteed the operating stability and the riding comfort of car.

Description

Double-cavity air spring and automobile

Technical Field

The utility model belongs to the technical field of automobile design and manufacturing, especially, relate to a two-chamber air spring and car.

Background

Air springs are used in some automotive suspension systems. The air spring is characterized in that compressed air is filled into a sealed air bag, and vibration isolation and buffering effects are realized by utilizing the nonlinear restoring force of compressed air, so that the up-and-down bumping degree of a vehicle body is reduced, and the driving comfort is improved.

In the actual driving process of the automobile, the related driving road conditions are complex and variable, for example: urban roads are relatively level driving road conditions, while rural roads or field roads are mostly hollow and bumpy driving road conditions. However, existing air springs have only one stiffness, i.e., they have only one air chamber (commonly known as single chamber air springs). When an automobile adopting a suspension system with only one type of rigidity air spring runs on an urban road, the operation stability and riding comfort of the automobile can meet the requirements of drivers and passengers, and once the automobile runs on a rural road or a field road, the rigidity of the air spring is obviously not suitable for the bumpy running road condition, namely the rigidity of the air spring is not suitable for the bumpy running road condition, and is obviously overlarge, so that the operation stability and riding comfort of the automobile are obviously poor, the requirements of the drivers and passengers cannot be met, and the driving experience of the drivers and passengers is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-chamber air spring aims at solving the road conditions of traveling that the rigidity of current air spring is not adapted hollow jolts, leads to the handling stability of car and the obvious worsened problem of riding comfort.

In order to achieve the above object, the utility model adopts the following technical scheme: a dual chamber air spring comprising:

the upper seat is fixedly connected with the automobile frame through a welding stud and comprises an upper seat partition plate, the inner space of the upper seat is divided into a first air chamber and a combined space with an opening by the upper seat partition plate, and a communication port for communicating the first air chamber with the combined space is formed in the upper seat partition plate;

the first end of the air bag is fixedly hooped with the circumferential outer wall of the opening through a hoop component, and the air bag is used for storing gas;

the vibration damping motion structure is provided with a first end and a second end which can mutually extend and slide, the first end penetrates through the air bag and is connected to the upper seat, the second end is used for being connected to the automobile hub, and the second end of the air bag are fixedly arranged in relative positions;

and the valve assembly is arranged at the communication port and is used for communicating or closing the communication port.

In one embodiment, the damping motion structure comprises a damper and a piston, the damper comprises a sleeve and a telescopic rod which are mutually telescopic and slide, the piston comprises a body and a cup-shaped portion, the cup-shaped portion is connected with the second end of the air bag, the first end of the body is connected with the cup-shaped portion, one end, provided with the telescopic rod, of the sleeve extends into the body and abuts against the cup-shaped portion, the cup-shaped portion is provided with a middle opening for the telescopic rod to penetrate through, the telescopic rod penetrates through the middle opening and then is connected with the upper seat, and the second end of the body and the outer side wall of the sleeve are in sealing assembly.

In one embodiment, the cup portion is further provided with a plurality of first bypass ports, the first bypass ports are used for communicating the inner cavity of the piston with the inner cavity of the air bag, and the number of the first bypass ports is set to be multiple, and the first bypass ports are evenly distributed around the center.

In one embodiment, the dual-cavity air spring further comprises a lower sealing ring and a stop ring, an annular clamping protrusion is arranged on the outer side wall of the sleeve, the annular clamping protrusion is located in the port of the body, which is far away from the cup installation portion, and the stop ring is sleeved on the sleeve and abuts against one side, facing the cup installation portion, of the annular clamping protrusion; the lower sealing ring is sleeved on the sleeve and abuts against one side of the stop ring, which is far away from the annular clamping protrusion, and the lower sealing ring, the port inner side wall of the body and the outer side wall of the sleeve form sealing assembly together.

In an implementation mode, the upper seat further comprises an upper seat upper cover, an upper seat lower cover and a valve mounting seat, an inner space is formed between the upper seat upper cover and the upper seat lower cover in a sealing connection mode, an upper seat partition plate is fixedly connected with the upper seat upper cover, the valve mounting seat is fixedly mounted on the upper seat partition plate in a communicating mode corresponding to the communicating port, the valve mounting seat penetrates through the upper seat lower cover and is communicated with the outside, the valve mounting seat is provided with a plurality of second square communicating ports communicated with the combined space, the valve assembly is mounted on the valve mounting seat in a matched mode, and the valve assembly is used for separating or communicating the communicating port and the second bypass air ports.

In an embodiment, two-chamber air spring still includes buffer block mount pad and buffer block, the buffer block mount pad links to each other with the seat of honour baffle stationary phase and sets up in the composite space, the buffer block is installed in the buffer block mount pad, the telescopic link passes the buffer block in proper order, seat of honour baffle and seat of honour upper cover back are through locking subassembly locking, cup portion sets up with the buffer block interval when the shock absorber is in natural state, wherein, the buffer block, all form sealed assembly between buffer block mount pad and the seat of honour baffle three and between buffer block and the telescopic link between the two.

In one embodiment, the dual-chamber air spring further comprises a locking hoop member, and the locking hoop member is arranged on the buffer block, so that the buffer block and the telescopic rod are hermetically assembled.

In one embodiment, the dual-chamber air spring further comprises a sealing cover and an upper sealing ring, a groove is formed in the upper cover of the upper seat, the telescopic rod penetrates out of the groove, the locking assembly is arranged in the groove, the sealing cover is arranged in the groove and covers the locking assembly, and the upper sealing ring is assembled in a gap between the circumferential side wall of the sealing cover and the groove wall of the groove in a sealing mode.

In one embodiment, the dual-chamber air spring further comprises a protective cylinder, the airbag is arranged in the protective cylinder, the first end of the protective cylinder is fixedly connected with the airbag, and the first end of the protective cylinder is arranged at an interval with the open port, wherein the interval between the protective cylinder and the open port is in transitional connection by the airbag.

According to another aspect of the present invention, there is provided a vehicle comprising the aforementioned dual chamber air spring.

The utility model discloses an among the two-chamber air spring, the seat of honour that the assembly is in the same place, the inner chamber space of gasbag is separated first air chamber and second air chamber by the seat of honour baffle, and control intercommunication or disconnection each other between first air chamber and the second air chamber through control valve subassembly's switch, and then the volumetric size of control air chamber changes two-chamber air spring's spring rate, make two-chamber air spring not only can be adapted to urban road's road conditions, also can be adapted to the road conditions of jolting of pothole, the manipulation stability and the riding comfort of car have been guaranteed, the requirement of navigating mate to the manipulation stability of car and riding comfort has been satisfied, thereby promote user's the experience of riding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic cross-sectional view of a dual chamber air spring according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

fig. 3 is a schematic sectional view of an upper seat, a valve mounting seat and a cushion block mounting seat in the dual-chamber air spring according to the embodiment of the present invention;

fig. 4 is an exploded view of the upper seat, the cushion block, the sealing cover, the upper seat bushing and the valve assembly of the dual-chamber air spring according to the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

11. a sealing cover; 12. an upper seat; 13. an upper sealing ring; 14. an upper seat bushing; 15. a valve assembly; 16. an air bag; 17. a piston; 18. a shock absorber; 19. a lower seal ring; 122. an upper seat upper cover; 123. an upper seat partition plate; 125. a buffer block mounting seat; 126. a valve mount; 127. an upper seat lower cover; 1201. a first air chamber; 1202. a combined space; 1203. a second bypass air port;

130. an interior space; 128. an opening; 1231. a communication port; 20. a protective cylinder; 181. a sleeve; 1811. the annular clamping bulge; 182. a telescopic rod; 171. a body; 172. a cup-shaped portion; 1722. a first bypass vent; 131. a locking assembly; 1311. a nut; 132. a stop ring; 133. a groove; 134. a lock collar member; 129. a buffer block; 141. a hoop member; 142. a steel ring member; 143. a dust-proof sleeve;

121. welding a stud; 124. an upper seat air nozzle; 151. a first seal ring; 152. an electromagnetic valve; 153. a second seal ring; 154. a retainer ring seat; 155. a circlip; 1204. a retainer ring locking groove; 1205. a third bypass air port; 1206. a boss at the upper end of the retainer ring seat; 1207. a shaft shoulder at the lower end of the electromagnetic valve; 1208. and a retainer ring mounting hole.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, 3 and 4, the dual chamber air spring of the embodiment of the present invention includes an upper seat 12, an air bag 16, a damping movement structure and a valve assembly 15. The upper seat 12 is provided with a plurality of welding studs 121, and the upper seat 12 is fixedly connected to the automobile frame through the welding studs 121. The upper seat 12 includes an upper seat partition plate 123, the upper seat partition plate 123 partitions the internal space 130 of the upper seat 12 into a first air chamber 1201 and a combined space 1202 having an opening 128, and a communication port 1231 for communicating the first air chamber 1201 and the combined space 1202 is provided in the upper seat partition plate 123. The first end of the airbag 16 is fixedly connected to the circumferential outer wall of the opening 128, and the first end of the airbag 16 is connected to the circumferential outer wall of the opening 128 in a sealing manner, and the specific hoop member 141 hoops the airbag 16 on the circumferential outer wall of the opening 128, and the airbag 16 is used for storing high-pressure gas. The valve assembly 15 is installed at the communication port 1231, and functions to communicate or close the communication port 1231 to communicate or disconnect the first air chamber 1201 and the combining space 1202. The damping motion structure has first end and the second end that can stretch out and draw back gliding each other, and the first end of damping motion structure passes gasbag 16 and is connected to upper bracket 12, and the second end of damping motion structure is used for being connected to on the automobile wheel hub, and the second end of damping motion structure and the second end relative position of gasbag 16 set up fixedly. Like this, at the in-process that the car went, when automobile wheel hub met when the road surface of jolting, the first end and the second end slip of vibration damping motion structure are flexible each other to make the high-pressure gas in the gasbag 16 further compressed or high-pressure gas acts on gasbag 16 and make gasbag 16 expand, thereby provide non-linear elasticity to car frame and automobile wheel hub, thereby realize the effect of damping, buffering.

The utility model discloses an among the two-chamber air spring, the seat of honour 12 of assembly together, 16 inner chamber spaces of gasbag are separated first air chamber and second air chamber by seat of honour baffle 123, and control intercommunication or disconnection each other between first air chamber and the second air chamber through control valve subassembly 15's switch, and then the volumetric size of control air chamber changes two-chamber air spring's spring rate, make two-chamber air spring not only can be adapted to the road conditions of urban road, also can be adapted to the road conditions of traveling that the hole jolts, the manipulation stability and the riding comfort of car have been guaranteed, the requirement of navigating mate to the manipulation stability of car and riding comfort has been satisfied, thereby promote user's the experience of riding.

The air spring also comprises a protective cylinder 20, the air bag 16 is arranged in the protective cylinder 20, and the inner wall of the first end of the protective cylinder 20 and the steel ring piece 142 clamp and fix the air bag 16. And the vibration damping moving structure includes a piston 17 and a vibration damper 18. A first end of the piston 17 extends into the protective cylinder 20, and the first end of the piston 17 is fixedly and sealingly connected with a second end of the airbag 16. The interior of the piston 17 communicates with the interior of the bladder 16. The damper 18 includes a sleeve 181 and a telescopic rod 182 which are slidably assembled with each other, one end of the sleeve 181 provided with the telescopic rod 182 extends into the piston 17, then the telescopic rod 182 is fixedly connected with the upper seat 12, the second end of the piston 17 is hermetically assembled with the outer side wall of the sleeve 181, and the positions of the sleeve 181 and the piston 17 are relatively fixed. Thus, the combined space 1202, the internal space of the airbag 16, and the internal space of the piston 17 communicate with each other to form a second air chamber with respect to the first air chamber 1201.

When the valve assembly 15 is in an open state, the first air chamber 1201 is communicated with the second air chamber, so that the double-cavity air spring has a relatively large air chamber space for executing nonlinear elastic force, and the spring stiffness of the double-cavity air spring is relatively low; when the valve assembly 15 is in the closed state, the first air chamber 1201 and the second air chamber are disconnected from each other, and the air chamber space of the dual-chamber air spring performing the nonlinear elastic force at this time is only the air containing space of the second air chamber, and the spring stiffness of the dual-chamber air spring is relatively large at this time. That is to say, the switch through control valve subassembly 15 controls intercommunication or disconnection each other between first air chamber 1201 and the second air chamber, and then the size of control air chamber volume changes the spring rate of two-chamber air spring, makes two-chamber air spring not only can be adapted to the road conditions of urban road, also can be adapted to the road conditions of going that the pothole jolts, has guaranteed the steering stability and the riding comfort of car, has satisfied the requirement of navigating mate to the steering stability and the riding comfort of car to promote user's the experience of riding.

In this air spring, the extension rod 182 serves as a first end of the structure for damping movements, and the piston 17 and the sleeve 181 together form a second end of the structure for damping movements.

As shown in fig. 1, the piston 17 includes a body 171 and a cup 172, a first end of the body 171 is connected to the cup 172 by welding, and a weld between the first end of the body 171 and the cup 172 is sealed. The second end of the body 171 is sealingly fitted with the outer side wall of the sleeve 181. Further, the cup-shaped portion 172 is provided with a central opening, and the telescopic rod 182 passes through the central opening and is fixedly connected to the upper seat 12. The end of the sleeve 181 abuts the cup 172. When the assembly between the piston 17 and the shock absorber 18 is completed, the central opening of the cup portion 172 can communicate the internal space of the piston 17 with the internal space of the airbag 16.

In order to enhance the effectiveness of the gas flow communication between the interior space of the piston 17 and the interior space of the air bag 16, the cup portion 172 is also provided with a first bypass vent 1722, as shown in FIG. 1. The first bypass ports 1722 are preferably provided in plurality, with the plurality of first bypass ports 1722 being evenly distributed circumferentially around the central opening. The interior chamber of piston 17 communicates with the interior chamber of bladder 16 through a first bypass vent 1722. Thus, when the sleeve 181 is moved toward the upper seat 12 together against the cup portion 172 of the piston 17, the gas in the inner space of the airbag 16 is compressed, and the gas is pushed toward the combination space 1202 and the inner space of the piston 17, and since the cup portion 172 is opened with the central opening and the first bypass port 1722, the gas in the inner space of the airbag 16 can be smoothly pushed into the inner space of the piston 17.

As shown in fig. 1, the dual chamber air spring further includes a lower sealing ring 19 and a stop ring 132. Accordingly, the outer wall of the sleeve 181 is provided with an annular snap 1811, the annular snap 1811 fitting within the end of the body 171 remote from the cup 172. The stop ring 132 is sleeved on the sleeve 181, and the stop ring 132 abuts against one side of the annular snap boss 1811 facing the cup portion 172. Further, the lower sealing ring 19 is sleeved on the sleeve and abuts against one side of the stop ring 132, which is far away from the annular clamping protrusion 1811. The lower packing 19 seals a gap between the inside of the port of the body 171 and the outer sidewall of the sleeve 181 to maintain airtightness of the second air chamber. When the second air chamber is filled with high-pressure gas, the lower seal ring 19 is pressed between the stop ring 132, the inner wall of the port of the body 171 and the outer side wall of the sleeve 181 by the pressure of the high-pressure gas, so that a sealing assembly is formed among the stop ring 132, the inner wall of the port of the body 171 and the outer side wall of the sleeve 181.

As shown in fig. 2 to 4, the upper seat 12 further includes the upper seat upper cover 122, the upper seat lower cover 127 and the valve mounting seat 126. The upper seat upper cover 122 is welded to the upper seat lower cover 127 to form an inner space 130, the upper seat partition 123 is disposed inside the upper seat upper cover 122 by welding, and the inner space 130 is divided into two parts, i.e., a first air chamber 1201 and a combined space 1202, by the upper seat partition 123. The upper seat cover 122 is provided with a plurality of welding studs 121, and the upper seat cover 122 is fixedly connected to the automobile frame through the welding studs 121. The upper seat cover 122 is further equipped with an upper seat nozzle 124, and the compressed gas is pumped into the first air chamber 1201 and the second air chamber through the upper seat nozzle 124.

Further, the valve mounting seat 126 and the communication port 1231 are correspondingly communicated and fixedly mounted on the upper seat partition 123, and the valve mounting seat 126 passes through the upper seat lower cover 127 and communicates with the outside. Specifically, the valve mounting seat 126 is provided with a plurality of second bypass gas holes 1203 communicated with the combined space 1202, wherein the number of the second bypass gas holes 1203 is multiple (two or more), and the multiple second bypass gas holes 1203 are circumferentially and uniformly distributed. The valve mounting seat 126 is welded to the upper seat partition 123 and the upper seat lower cover 127, respectively. The valve assembly 15 is installed in the valve mounting seat 126, and the valve assembly 15 is used for connecting or disconnecting the communication port 1231 and the second bypass air port 1203.

As shown in fig. 2 and 4, the valve assembly 15 includes a first sealing ring 151, a solenoid valve 152, a second sealing ring 153, a retainer ring seat 154, and a circlip 155. The first sealing ring 151 is sleeved on the electromagnetic valve 152, the first sealing ring 151 is located at a position between the second bypass air port 1203 and the communication port 1231 of the valve mounting seat 126, the second sealing ring 153 is sleeved on the electromagnetic valve 152, the second sealing ring 153 is located on one side, away from the first sealing ring 151, of the second bypass air port 1203, a third bypass air port 1205 is formed in the electromagnetic valve 152, and the third bypass air port 1205 is located between the first sealing ring 151 and the second sealing ring 153. The first sealing ring 151, the second sealing ring 153 and the solenoid valve 152 are mutually matched, and the first air chamber 1201 and the second air chamber are mutually communicated or disconnected through a third bypass air hole 1205 and a second bypass air hole 1203 of the solenoid valve 152 by opening or closing the solenoid valve 152.

As shown in fig. 2 and 4, when the solenoid valve 152 is assembled to the valve mounting seat 126, the first sealing ring 151 and the second sealing ring 153 are sleeved on the solenoid valve 152, then the solenoid valve 152 is inserted into the valve mounting seat 126, and then the retainer ring seat 154 is sleeved on the end portion of the solenoid valve 152 far away from the communication port 1231, so that the retainer ring seat upper end boss 1206 of the retainer ring seat 154 abuts against the solenoid valve lower end shoulder 1207 of the solenoid valve 152 to axially fix the solenoid valve 152. The inner wall of the lower port of the valve seat 126 is provided with a retainer ring locking groove 1204, and finally the circlip 155 is locked in the retainer ring locking groove 1204 to axially stop the retainer ring seat 154, thereby locking the solenoid valve 152.

Further, the circlip 155 may be inserted into the circlip mounting hole 1208 using a special circlip pliers, which may tighten the radial dimension of the circlip 155, and then snap the circlip 155 into the circlip locking groove 1204. When the electromagnetic valve 152 needs to be disassembled, maintained or replaced, the circlip pliers are inserted into the circlip mounting hole 1208, so that the radial dimension of the circlip 155 can be tightened, then the circlip 155 is taken out of the circlip locking groove 1204, and then the circlip seat 154 and the electromagnetic valve 152 are sequentially disassembled from the valve mounting seat 126 for maintenance or replacement. In the dual-chamber air spring of the embodiment of the present invention, the electromagnetic valve 152 is a normally open valve, that is, the first air chamber 1201 is communicated with the second air chamber when the electromagnetic valve 152 is powered off; when the solenoid valve 152 is energized, the valve closes and the first air chamber 1201 and the second air chamber are disconnected.

As shown in fig. 1, the dual chamber air spring further includes a cushion mounting seat 125 and a cushion 129, the cushion mounting seat 125 is fixedly connected to the upper seat partition 123 and is located in the assembly space 1202, and the specific cushion mounting seat 125 and the upper seat partition 123 are fixed by welding. Buffer block 129 is installed in buffer block mounting base 125, and buffer block 129 is provided with a through hole for telescopic link 182 to pass through. The telescopic rod 182 passes through the buffer block 129, then passes through the upper seat partition 123 and the upper seat cover 122, and finally is locked and fixed by the locking component 131. As shown in fig. 1 and 4, locking assembly 131 comprises upper seat bushing 14 and nut 1311, upper seat bushing 14 is fitted over the end of telescoping rod 182, and then the end of telescoping rod 182 is locked by nut 1311. The cup portion 172 is spaced from the bumper 129 when the shock absorber 18 is in the natural state. During the operation of the dual-chamber air spring, the sleeve 181 and the piston 17 move together toward the upper seat 12, so that the air in the air bag 16 is further compressed, and the piston 17 and the sleeve 181 realize damping under the action of the nonlinear elasticity of the compressed air. When the moving amount of the piston 17 and the sleeve 181 is too large, the cup portion 172 of the piston 17 directly abuts against the end of the buffer block 129, and the buffer block 129 generates a certain degree of elastic compression deformation upon receiving an impact, so that the cup portion 172 is blocked and cannot continue to move towards the upper seat 12, and a rigid collision between the cup portion 172 and the upper seat 12 is avoided.

In the embodiment of the present invention, the airtight assembly is provided between the three of the buffer block 129, the buffer block mounting seat 125 and the upper seat partition 123 and between the buffer block 129 and the telescopic rod 182, so as to ensure the airtight performance of the first air chamber 1201 and the second air chamber. Further, the buffer block 129 is assembled with the telescopic rod 182 through the locking hoop member 134. That is, after the extension bar 182 passes through the buffer block 129, the locking hoop 134 is clasped to the buffer block 129 to press the buffer block 129, so that a sealing assembly is formed between the buffer block 129 and the extension bar 182.

As shown in fig. 3 to 4, the dual chamber air spring further includes a sealing cap 11 and an upper sealing ring 13. The upper seat cover 122 is provided with a groove 133, and during assembly, the expansion link 182 penetrates through the buffer block 129 and the upper seat partition 123 and then penetrates out of the groove 133. Also, a locking assembly 131 for locking the end of the telescopic bar 182 is located in a groove 133 provided in the upper seat cover 122. The sealing cover 11 is assembled on the groove 133 and covers the locking component 131, and the upper sealing ring 13 is hermetically assembled between the circumferential side wall of the sealing cover 11 and the groove wall of the groove 133, so that the groove 133 meets the dustproof and waterproof requirements.

As shown in fig. 1, the first end of the protective sleeve 20 is spaced from the port of the opening 128. The space between the first end of the protection cylinder 20 and the port of the opening 128 is transitionally connected through the air bag 16, and the end of the telescopic rod 182 can have a certain deformation buffering function relative to the upper seat upper cover 122 through the upper seat bushing 14, so that the protection cylinder 20, the piston 17 and the shock absorber 18 which are assembled together have the lateral deflection capability relative to the upper seat 12, and the sleeve 181 can perform adaptive deformation in multiple degrees of freedom directions in space to buffer shock absorption when being subjected to complex external force.

As shown in fig. 1, a dust cover 143 is provided between a port of the protective cylinder 20 away from the upper seat 12 and a port of the body 171 away from the upper seat 12. The dust cover 143 is a bellows sleeve having elastic expansion and contraction capability. The dust cap 143 is simultaneously telescopically deformed during movement of the sleeve 181 and piston 17 along the telescopic rod 182. The dust-proof cover 143 can prevent dust and water, and prevent dust, liquid, impurities and the like from entering the space between the protective cylinder 20 and the piston 17 to contact, pollute and even damage the air bag 16.

According to another aspect of the present invention, an automobile (not shown) is provided. Specifically, the automobile comprises a suspension system, and the suspension system is assembled by adopting the double-cavity air spring. The overall rigidity of the suspension system is adjusted by utilizing the adjustable spring rigidity of the double-cavity air spring, so that the suspension system not only can be suitable for the road condition of urban roads, but also can be suitable for the driving road condition bumpy, and the control stability and riding comfort of an automobile are ensured.

Generally, the dual-chamber air spring keeps the first air chamber 1201 and the second air chamber in a mutually communicated use state, namely the spring stiffness of the dual-chamber air spring is relatively low, so that the overall stiffness of the suspension system is low, and the suspension system of the automobile shows a soft buffer damping characteristic no matter the smooth driving road condition of an urban road or the concave and bumpy driving road condition of a rural road, so that a driver and passengers can feel more comfortable in the driving process. When a driver and an occupant want to experience different driving feelings caused by the fact that the suspension system is in a 'hard' buffer damping characteristic, the driver energizes the electromagnetic valve 152, so that the first air chamber 1201 and the second air chamber are disconnected, and at the moment, compressed air in the second air chamber acts on the double-chamber air spring under the action of the nonlinear elastic force (namely, the volume of the air chamber of the double-chamber air spring is reduced, so that the spring stiffness of the double-chamber air spring is relatively large).

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A dual chamber air spring, comprising:

an upper seat (12), the upper seat (12) being configured to be mounted to a vehicle frame, the upper seat (12) including an upper seat partition (123), the upper seat partition (123) dividing an internal space (130) of the upper seat (12) into a first air chamber (1201) and a combined space (1202) having an opening (128), the upper seat partition (123) being provided with a communication port (1231) for communicating the first air chamber (1201) and the combined space (1202);

a bladder (16), a first end of the bladder (16) being connected to a circumferential outer wall of the opening (128), the bladder (16) being for storing a gas;

the vibration reduction movement structure is provided with a first end and a second end which can mutually extend and slide, the first end penetrates through the air bag (16) to be connected to the upper seat (12), the second end is used for being connected to an automobile hub, and the second end of the air bag (16) are fixedly arranged in relative positions;

a valve assembly (15), wherein the valve assembly (15) is installed on the communication port (1231), and the valve assembly (15) is used for communicating or closing the communication port (1231).

2. The dual chamber air spring of claim 1,

the vibration damping movement structure comprises a vibration damper (18) and a piston (17), wherein the vibration damper (18) comprises a sleeve (181) and a telescopic rod (182) which are mutually telescopic and slide, the piston (17) comprises a body (171) and a cup-shaped part (172), the cup-shaped part (172) is connected with the second end of the air bag (16), the first end of the body (171) is connected with the cup-shaped part (172), one end, provided with the telescopic rod (182), of the sleeve (181) extends into the body (171) and abuts against the cup-shaped part (172), the cup-shaped part (172) is provided with a middle opening for the telescopic rod (182) to pass through, the telescopic rod (182) passes through the middle opening and then is connected with the upper seat (12), and the second end of the body (171) is hermetically assembled with the outer side wall of the sleeve (181).

3. The dual chamber air spring of claim 2,

the cup portion (172) is further provided with a first bypass port (1722), and the first bypass port (1722) is used for communicating the piston (17) and the air bag (16).

4. The dual chamber air spring of claim 2,

the double-cavity air spring further comprises a lower sealing ring (19) and a stop ring (132), an annular clamping protrusion (1811) is arranged on the outer side wall of the sleeve (181), the annular clamping protrusion (1811) is located in a port of the body (171) far away from the cup-shaped portion (172), the stop ring (132) is sleeved on the sleeve (181) and abutted to one side, facing the cup-shaped portion (172), of the annular clamping protrusion (1811), the lower sealing ring (19) is sleeved on the sleeve (181) and abutted to one side, facing away from the annular clamping protrusion (1811), of the stop ring (132), and the lower sealing ring (19), the inner side wall of the port of the body (171) and the outer side wall of the sleeve (181) form sealing assembly.

5. The dual chamber air spring according to any of claims 2-4,

the upper seat (12) further comprises an upper seat upper cover (122), an upper seat lower cover (127) and a valve installation seat (126), the upper seat upper cover (122) and the upper seat lower cover (127) are connected in a sealing mode to form the inner space (130), the upper seat partition plate (123) is fixedly connected to the upper seat upper cover (122), the valve installation seat (126) and the communication port (1231) are correspondingly and communicatively installed on the upper seat partition plate (123), the valve installation seat (126) penetrates through the upper seat lower cover (127) and is communicated with the outside, the valve installation seat (126) is provided with a plurality of second bypass air ports (1203) communicated with the combined space (1202), the valve assembly (15) is installed on the valve installation seat (126), and the valve assembly (15) is used for communicating or disconnecting the communication port (1231) and the second bypass air ports (1203).

6. The dual chamber air spring of claim 5,

the double-cavity air spring further comprises a buffer block mounting seat (125) and a buffer block (129), the buffer block mounting seat (125) is connected to the upper seat partition plate (123) and located in the combined space (1202), the buffer block (129) is mounted in the buffer block mounting seat (125), the telescopic rod (182) sequentially penetrates through the buffer block (129), the upper seat partition plate (123) and the upper seat upper cover (122) and then is locked through a locking component (131), the cup-shaped portion (172) and the buffer block (129) are arranged at intervals when the shock absorber (18) is in a natural state, and sealing assembly is formed among the buffer block (129), the buffer block mounting seat (125) and the upper seat partition plate (123) and among the buffer block (129) and the telescopic rod (182).

7. The dual chamber air spring of claim 6,

the double-cavity air spring further comprises a locking hoop member (134), and the locking hoop member (134) is hooped on the buffer block (129) so that a sealing assembly is formed between the buffer block (129) and the telescopic rod (182).

8. The dual chamber air spring of claim 6,

the dual-chamber air spring further comprises a sealing cover (11) and an upper sealing ring (13), a groove (133) is formed in the upper seat upper cover (122), the telescopic rod (182) penetrates into the groove (133), the locking component (131) is located in the groove (133), the sealing cover (11) is installed in the groove (133) and covers the locking component (131), and the upper sealing ring (13) is assembled between the circumferential side wall of the sealing cover (11) and the groove wall of the groove (133).

9. The dual chamber air spring of claim 1,

the double-cavity air spring further comprises a protection barrel (20), the air bag (16) is arranged in the protection barrel (20), the first end of the protection barrel (20) is connected with the air bag (16), and the first end of the protection barrel (20) is arranged at intervals with the port of the opening (128).

10. An automobile comprising a suspension system including the dual chamber air spring of any of claims 1-9.

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