CN218817795U - Air spring and automobile - Google Patents

Abstract

The utility model belongs to the technical field of automobile design and manufacturing, especially, relate to an air spring and car. Wherein, this air spring includes: the spring comprises a spring body, a first end of the spring body is used for being connected to an automobile frame, a second end of the spring body is used for being connected to an automobile hub, the spring body comprises an air bag, and the air bag is used for storing air and providing nonlinear elasticity for the automobile frame and the automobile hub; the air storage cylinder is used for being detachably connected with the automobile frame and is provided with a communicating connector, and the connecting connector is communicated with the air bag through a connecting pipe. The utility model discloses an add the whole effective volume in order to increase air spring of air chamber space that has established the gas receiver, and then reduced air spring's spring rate, make this air spring can be applicable to the road conditions of going that the hollow jolted more, guaranteed the operating stability and the riding comfort of car.

Description

Air spring and automobile

Technical Field

The utility model belongs to the technical field of automobile design and manufacturing, especially, relate to an 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.

The existing air spring only has one air chamber (commonly called single-chamber air spring). When an automobile adopting the suspension system with only one air spring with spring stiffness 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 spring stiffness of the air spring is obviously not suitable for the bumpy running road condition, namely the spring stiffness 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 an air spring and car aims at solving the road conditions of going that the spring rate of current air spring is not suitable for the pothole jolt, leads to the operating 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: an air spring and an automobile comprise:

the spring body is used for being connected to an automobile frame, the second end of the spring body is used for being connected to an automobile hub, the spring body comprises an air bag, and the air bag is used for storing gas and providing nonlinear elastic force for the automobile frame and the automobile hub;

the air storage cylinder is used for being detachably connected with the automobile frame and is provided with a communicating connector, and the communicating connector is communicated with the air bag through a connecting pipe.

In one embodiment, the spring body further comprises: the upper seat is used for being connected with an automobile frame and is provided with an inner space and a communication port communicated with the inner space, the first end of the air bag is connected to the outer peripheral wall of the upper seat, and the air bag is communicated with the inner space; the shock absorber comprises a sleeve and an expansion link which are assembled in a sliding mode, the end part of the sleeve, which is provided with the expansion link, and the second end of the air bag are assembled in a sealing mode, and the expansion link penetrates through the air bag and then is connected with the upper seat; the piston is connected with the second end of the air bag, the piston is communicated with the air bag, the end part of the sleeve, which is provided with the telescopic rod, extends into the piston, the second end of the piston is in sealing assembly with the outer side wall of the sleeve, and the sleeve and the piston are relatively fixedly arranged.

In one embodiment, the piston comprises a body and a cup-shaped portion, a first end of the body is connected with the cup-shaped portion, preferably by welding, a second end of the body is in sealing fit with an outer side wall of the sleeve, the cup-shaped portion is provided with a middle opening for the telescopic rod to pass through, the telescopic rod is connected with the upper seat after passing through the middle opening, and an end portion of the sleeve abuts against the cup-shaped portion, and when the sleeve moves relative to the telescopic rod under an external force, the cup-shaped portion is driven to move together towards the upper seat.

In one embodiment, the cup portion is further provided with a bypass air port for communicating the piston with the air bag. The number of the bypass air ports is a plurality, and the larger the number of the bypass air ports is, the better the connectivity between the inner cavity of the piston and the inner cavity of the air bag is.

In one embodiment, the air spring further comprises a lower sealing ring and a stop ring, the outer side wall of the sleeve is provided with an annular clamping protrusion, the annular clamping protrusion is located in the port of the body, which is far away from the cup-shaped portion, and the stop ring is sleeved on the sleeve and abuts against one side, facing the cup-shaped 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 embodiment, air spring still includes buffer block mount pad and buffer block, the buffer block mount pad sets up in the inner space, the buffer block is installed in the buffer block mount pad, the telescopic link passes the buffer block in proper order, through locking subassembly locking behind the seat of honour, cup portion sets up with the buffer block interval when the shock absorber is in natural state, cup portion is as the contact surface that can contact with the buffer block towards a side surface of buffer block, come to reduce the impact of cup portion to the seat of honour when receiving big exogenic action through the buffer block

In an implementation mode, the air spring further comprises a sealing cover and an upper sealing ring, a groove is formed in the upper seat, a groove bottom hole is formed in the bottom of the groove, the telescopic rod penetrates out of the groove bottom hole to 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 one embodiment, the air spring further comprises a locking assembly, the locking assembly comprises an elastic bushing and a nut, the elastic bushing is sleeved on the end portion of the telescopic rod, the nut is in threaded connection with the telescopic rod and clamps the elastic bushing, the elastic bushing is provided with a communication channel, and the communication channel is used for communicating a space between the elastic bushing and the sealing cover with an inner space of the air bag.

In one embodiment, the air spring further comprises a protective cylinder, the air bag is arranged in the protective cylinder, a first end of the protective cylinder is fixedly connected with the air bag, and the first end of the protective cylinder is arranged at an interval with the upper seat, wherein the interval between the protective cylinder and the upper seat is in transitional connection by the air bag.

Further, the air storage cylinder is formed by welding a first end cover, a cylinder body and a second end cover, a communicating joint is arranged on the first end cover, an installation support is arranged on the outer wall of the cylinder body, and a pump air joint is arranged on the second end cover. The communicating joint is connected with a second joint on the connecting pipe and fixed together through a nut, and the communicating joint and the second joint have air tightness after being fixedly connected due to the structure of the communicating joint and the second joint; the air pumping joint is fixedly connected with the second end cover in a sealing way, and an air pressure meter can be arranged at the air pumping joint, so that air can be inflated through the air pumping joint when the air pressure is detected to be smaller than a preset value; the air storage cylinder is communicated with the air bag through a connecting pipe, specifically, the connecting pipe is matched with a first connector, and the first connector is fixed on the upper seat through a first mounting bolt; the air cylinder body can be detachably arranged on any part of the vehicle through the mounting bracket, for example, the mounting bracket is fixedly connected on the automobile frame through bolts, so that the inner tension mounting space of the vehicle can be relieved, and the air spring can have different specification performances by replacing air cylinders with different specifications, so that the vehicle can adapt to different road conditions.

Furthermore, the air spring can change the internal volume only by changing the volume of the air storage cylinder, and can compensate the volume difference required by different vehicle types, so that the structural size of the body part of the air spring is fixed, the research and development cost is reduced, and the mold utilization rate is improved.

According to another aspect of the present invention, there is provided a vehicle comprising the air spring described above.

The utility model discloses following beneficial effect has at least:

the utility model discloses an air spring, for current air spring, the gas receiver has additionally been set up, the gas receiver passes through the inner space of connecting pipe intercommunication gasbag in order to regard as air spring's auxiliary air chamber, and then under the limited circumstances of installation space in the car and for current air spring, the effective volume of air spring has been enlarged under the not enlarged prerequisite of the volume of spring main part, make air spring's spring rate reduce, thereby make air spring's spring rate be adapted to the road conditions of going of bumpy hole more, the riding comfort of car has been guaranteed, thereby promote user's driving experience.

On the other hand, the utility model discloses an air spring only needs to change the whole effective volume that air spring just can change air spring's volume to can compensate the required volume difference of different motorcycle types, also select for use required volumetric air receiver according to different motorcycle types exactly. Therefore, the structural size of the spring main body part of the air spring can be fixed, the research and development cost is reduced, and the mold utilization rate is improved.

Drawings

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

FIG. 1 is a schematic view of an air spring assembly according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an air spring of an embodiment of the present invention except for an air storage cylinder;

fig. 3 is a schematic cross-sectional view of an air reservoir of an air spring according to an embodiment of the present invention;

fig. 4 is an assembly structural diagram of a connecting pipe, a first joint and a second structure in an air spring according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a piston in an air spring according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a shock absorber in an air spring according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

13. an upper seat; 130. a groove bottom hole; 131. an inner space; 132. a communication port; 134. a buffer block mounting seat; 135. a locking assembly; 14. an elastic bushing; 141. a communication channel; 136. a nut; 137. welding a stud;

3. a connecting pipe; 31. a first joint; 33. a second joint; 2. a first mounting bolt;

20. a protective cylinder;

15. an air bag; 151. a steel ring member; 152. a hoop member;

17. a shock absorber; 171. a telescopic rod; 172. a sleeve; 1721. the annular clamping bulge;

5. an air cylinder; 511. a communication joint; 51. a first end cap; 52. a barrel; 53. a second end cap; 54. a pump air connector; 55. mounting a bracket; 4. a second mounting bolt;

16. a piston; 161. a body; 162. a cup-shaped portion; 1620. the middle part is opened; 1621. a bypass air port; 143. a dust-proof sleeve;

18. a lower seal ring; 19. a stop ring;

129. a buffer block;

11. a sealing cover; 12. and an upper sealing ring.

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 those 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 being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. 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; either directly or indirectly through intervening media, either internally or in any other relationship. 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 and 2, the air spring according to the embodiment of the present invention includes a spring main body and an air cylinder 5. A first end of the spring body is adapted to be connected to a vehicle frame (not shown) and a second end of the spring body is adapted to be connected to a vehicle hub (not shown). The spring body comprises an air bag 15, the air bag 15 is used for storing high-pressure gas, and in the working process of the spring body, the high-pressure gas in the air bag 15 is further compressed or acts on the air bag 15 to expand the air bag 15, so that nonlinear elasticity is provided for an automobile frame and an automobile hub, and the effects of buffering and vibration reduction are achieved. The air cylinder 5 can be fixedly connected with the automobile frame, but is not limited to be connected with the automobile frame, and can also be fixedly hung on the upper seat 13. The air cylinder 5 is provided with a communication joint 511, and the communication joint 511 is communicated with the air bag 15 through a connecting pipe 3.

The utility model discloses an air spring, for current air spring, air receiver 5 has additionally been set up, air receiver 5 is through the auxiliary air chamber of 3 intercommunication gasbags 15 of connecting pipe in order to regard as air spring, and then under the limited circumstances of installation space in the car and for current air spring, the effective volume of air spring has been enlarged under the not enlarged prerequisite of volume of spring main part, make air spring's spring rate reduce, thereby make air spring's spring rate be adapted to the road conditions of going of jolting in the pit and cave more, the riding comfort of car has been guaranteed, thereby promote user's the experience of riding. On the other hand, the utility model discloses an air spring only needs to change the whole effective volume that air spring just can change air spring 5's volume to can compensate the required volume difference of different motorcycle types, also select for use required volumetric air reservoir 5 according to different motorcycle types exactly. Therefore, the structural size of the main body part of the air spring can be fixed, the research and development cost is reduced, and the mold utilization rate is improved.

In this air spring, the spring main body further includes an upper seat 13 and a damper 17. The upper seat 13 is provided with a plurality of welding studs 137, and the upper seat 13 is fixedly connected to the automobile frame through the welding studs 137. The upper seat 13 is provided with an inner space 131 and a communication port 132 communicating with the inner space 131. The first end of the airbag 15 wraps around the circumferential outer wall of the upper seat 13, and the airbag 15 is clamped at the circumferential outer wall of the upper seat 13 by the clamp 152, and the inner space of the airbag 15 communicates with the inner space 131. As shown in fig. 6, the damper 17 includes a sleeve 172 and an extension rod 171 which are slidably engaged with each other. The end of the sleeve 172 provided with the telescopic rod 171 is hermetically fitted with the second end of the airbag 15, and the telescopic rod 171 penetrates through the airbag 15 and is fixedly connected with the upper seat 13.

In the air spring, the air chamber space of the air reservoir 5 is communicated with the inner space 131, that is, the air chamber space of the air reservoir 5 is communicated with the inner space of the air bag 15, so that the effective volume of the air spring is enlarged to reduce the rigidity of the spring, the effective volume of the air spring can be changed by only changing the volume of the air reservoir, and the volume difference required by different vehicle types can be compensated, that is, the air reservoir with the required volume is selected according to different vehicle types. The internal space of the air bag 15 is externally connected with the air storage cylinder 5, the effective volume of the air spring is enlarged under the condition that the mounting space in the automobile is limited and compared with the premise that the volume of the main body of the existing air spring is not increased, the spring rigidity of the air spring is reduced, the spring rigidity of the air spring is more suitable for the bumpy driving road condition, the riding comfort of the automobile is guaranteed, and the driving experience of a user is improved.

As shown in fig. 2 and 5, the spring body further comprises a piston 16, and a first end of the piston 16 is hermetically and fixedly connected with a second end of the air bag 15. The inner space of the piston 16 is communicated with the inner space of the airbag 15, the end of the sleeve 172, to which the telescopic rod 171 is assembled, extends into the piston 16, the second end of the piston 16 is in sealing assembly with the outer side wall of the sleeve 172, the sleeve 172 is fixedly arranged relative to the piston 16, and specifically, the lower sealing ring 18 is arranged between the second end of the piston 16 and the outer side wall of the sleeve 172, and is in sealing assembly through the lower sealing ring 18.

As shown in fig. 2 and 5, the piston 16 includes a body 161 and a cup 162. The first end of the body 161 is fixedly and hermetically connected with the cup 162, and preferably, the first end of the body 161 is connected with the cup 162 by welding. The second end of the body 161 and the outer side wall of the sleeve 172 are hermetically assembled, and specifically, a lower sealing ring 18 is arranged between the second end of the body 161 and the outer side wall of the sleeve 172, and the lower sealing ring 18 is hermetically assembled. As shown in fig. 5, the cup 162 has a central opening 1620, the retractable rod 171 is fixedly connected to the upper seat 13 after passing through the central opening 1620, and the end of the sleeve 172 abuts against the cup 162, so that the sleeve 172 and the piston 16 are fixed relative to each other.

In order to enhance the flow efficiency of the air flow between the internal space of the piston 16 and the internal space of the airbag 15, a bypass air port 1621 is further provided in the cup portion 162 as shown in fig. 2 and 5. The bypass ports 1621 are preferably provided in plurality, with the plurality of bypass ports 1621 being evenly distributed circumferentially around the central opening 1620. The inner chamber of the piston 16 communicates with the inner chamber of the airbag 15 through the bypass port 1621. Thus, when the sleeve 172 moves by an external force and moves toward the upper seat 13 together against the cup portion 162 of the piston 16, the gas in the inner space of the airbag 15 is compressed and pushed toward the inner space of the piston 16, and the gas in the inner space of the airbag 15 can be smoothly pushed into the inner space of the piston 16 because the cup portion 162 is opened with the middle opening 1620 and the bypass port 1621. When the external force disappears, the compressed air applies work to the piston 16, so that the piston 16 and the sleeve 172 move together in a direction away from the upper seat 13, and at this time, the compressed air in the internal space of the piston 16 smoothly flows into the internal space of the airbag 15 from the middle opening 1620 and the bypass port 1621.

As shown in fig. 2, the air spring further includes a lower seal ring 18 and a stop ring 19. Correspondingly, the outer wall of the sleeve 172 is provided with an annular snap projection 1721, the annular snap projection 1721 fitting into the end of the body 161 remote from the cup 162. The stop ring 19 is sleeved on the sleeve 172, and the stop ring 19 abuts against one side of the annular snap 1721 facing the cup portion 162. Further, the lower sealing ring 18 is sleeved on the sleeve 172 and abuts against a side of the stop ring 19 away from the annular snap 1721. The lower seal ring 18 seals a gap between the port inner wall of the body 161 and the outer side wall of the sleeve 172 to ensure airtightness. When the inner space 131, the inner space of the airbag 15 and the inner space of the piston 16 are filled with high-pressure gas, the lower seal ring 18 is compressed between the stop ring 19, the inner wall of the port of the body 161 and the outer side wall of the sleeve 172 by the gas pressure of the high-pressure gas, so that a sealing assembly is formed among the stop ring 19, the inner wall of the port of the body 161 and the outer side wall of the sleeve 172.

As shown in fig. 2, the air spring further includes a cushion mount 134 and a cushion 129, the cushion mount 134 is disposed on the upper seat 13, the cushion mount 134 is disposed in the inner space 131, and the cushion mount 134 is a part of the upper seat 13 (that is, the upper seat 13 and the cushion mount 134 may be integrally cast structural members). The buffer block 129 is installed in the buffer block installation seat 134, and the buffer block 129 is provided with a through hole for the telescopic rod 171 to pass through. The expansion link 171 passes through the cup-shaped portion 162 and is fixedly connected with the upper seat 13 after passing through the through hole of the buffer block 129. The cup portion 162 is spaced from the damper block 129 when the shock absorber 17 is in the natural state. During the operation of the air spring, the sleeve 172 is acted by external force and moves together with the piston 16 towards the upper seat 13, so that the air in the air bag 16 is further compressed, and the piston 16 and the sleeve 172 realize buffer vibration damping under the action of the nonlinear elastic force of the compressed air. When the movement amount of the piston 16 and the sleeve 172 is too large, the cup-shaped portion 162 of the piston 16 directly abuts against the end of the buffer block 129, and the buffer block 129 is impacted to generate a certain degree of elastic compression deformation, so that the cup-shaped portion 162 is blocked and cannot move continuously towards the upper seat 13, and a rigid collision between the cup-shaped portion 162 and the upper seat 13 is avoided.

As shown in fig. 1 and 2, the air spring further includes a sealing cover 11 and an upper sealing ring 12. A groove is formed in the upper seat 13, a groove bottom hole 130 is formed in the bottom of the groove, the telescopic rod 171 continuously penetrates out of the groove bottom hole 130 into the groove after penetrating through the through hole of the buffer block 129, then the end portion of the telescopic rod 171 and the upper seat 13 are relatively locked through the locking assembly 135, and the locking assembly 135 is located in the groove. The sealing cover 11 is assembled in the groove and covers the locking assembly 135, the upper sealing ring 12 is assembled between the circumferential side wall of the sealing cover 11 and the groove wall of the groove in a sealing mode, the air tightness of the groove is further improved, and meanwhile dust prevention and water prevention are achieved.

As shown in fig. 2, the locking assembly 135 includes an elastic bushing 14 and a nut 136, the elastic bushing 14 is sleeved on the end of the telescopic rod 171, the nut 136 is screwed with the telescopic rod 171 and clamps the elastic bushing 14, the elastic bushing 14 is provided with a communication passage 141, and the communication passage 141 is used for communicating the space between the elastic bushing 14 and the sealing cover 11 with the internal space of the air bag 15, thereby utilizing the cavity existing in the air spring as an effective volume for containing air as much as possible.

As shown in fig. 1 and 2, the air spring further includes a protective sleeve 20. The airbag 15 is built in the protection tube 20, and the first end of the protection tube 20 and the steel ring 151 clamp and fix the airbag 15. The first end of the protection cylinder 20 is spaced from the upper seat 13, the spacing position is in transition connection with the air bag 15, and the end of the expansion link 171 can have a certain deformation buffering function relative to the upper seat 13 through the elastic bushing 14, so that the protection cylinder 20, the piston 16 and the damper 17 assembled together have a lateral deflection capability relative to the upper seat 13. When the sleeve 172 is subjected to complex external force, the multi-degree-of-freedom direction adaptive deformation can be carried out in the space to buffer and damp vibration.

As shown in fig. 1 and 2, a dust boot 143 is provided between a port of the protection cylinder 20 away from the upper seat 13 and a port of the body 161 away from the upper seat 13. The dust cover 143 is a bellows tube having elastic expansion and contraction capability. The dust cap 143 is synchronously deformed telescopically as the sleeve 172 and the piston 16 move along the telescopic rod 171. 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 16 to contact, pollute and even damage the air bag 15.

As shown in fig. 1, 3 and 4, the air cylinder 5 is formed by welding a first end cap 51, a cylinder 52 and a second end cap 53. The first end cap 51 is provided with a communication joint 511, the outer wall of the cylinder 52 is provided with a mounting bracket 55, and the second end cap 53 is provided with a pump air joint 54. The communication joint 511 is connected to the second joint 33 of the connection pipe 3 and is fixed together by tightening a nut. The pump air connector 54 may be provided with a barometer, and when the barometer detects that the air pressure in the air reservoir 5 is smaller than the lower limit of the air pressure range of the working air pressure of the air spring, the air can be inflated through the pump air connector 54. The air cylinder 5 is communicated with the communication port 132 of the upper seat 13 through the connecting pipe 3 (i.e. the air cylinder 5 is communicated with the air bag 15), specifically, the connecting pipe 3 is matched with the first joint 31, and the first joint 31 is installed on the upper seat 13 through the first mounting bolt 2. The air cylinder 5 can be detachably mounted on the vehicle frame through the mounting bracket 55 of the cylinder 52, for example, the mounting bracket is fixed on the vehicle frame through bolts, so that the compact mounting space of the vehicle chassis can be relieved, and the air spring can have different specification performance by replacing air cylinders with different specifications, so that the vehicle can adapt to different road conditions.

The utility model discloses an air spring only needs to change the whole effective volume that air spring just can change air spring 5's volume to can compensate the required volume difference of different motorcycle types, just also choose for use required volumetric air receiver 5 according to different motorcycle types, consequently, air spring's the spring main part's of body structural dimension can be fixed, and then reduces the research and development cost, promotes the mould universal ratio.

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 air spring. The effective volume of the air spring is further increased by utilizing the air chamber of the air storage cylinder 5 of the air spring, so that the overall spring stiffness of the air spring is reduced, the suspension system is more suitable for the bumpy driving road condition, and the control stability and riding comfort of an automobile are ensured.

Will the utility model provides an air spring is applied to the suspension system in, has increased air spring's effective volume through addding air receiver 5 in this air spring for air spring's spring rate is less relatively, makes suspension system's bulk stiffness less, no matter be urban road's the smooth road conditions of traveling, still the road conditions of traveling that the hole hollow of rural road jolted, the suspension system of car all demonstrates "softer" buffering damping characteristic, makes driver and crew more comfortable at the process of traveling.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. An air spring, comprising:

the spring comprises a spring body, a first end of the spring body is used for being connected to an automobile frame, a second end of the spring body is used for being connected to an automobile hub, the spring body comprises an air bag (15), and the air bag (15) is used for storing gas and providing nonlinear elasticity for the automobile frame and the automobile hub;

the air storage cylinder (5) is detachably connected with the automobile frame, a communication connector (511) is arranged on the air storage cylinder (5), and the communication connector (511) is communicated with the air bag (15) through a connecting pipe (3).

2. Air spring according to claim 1,

the spring body further includes:

the upper seat (13) is connected with a frame of an automobile, an inner space (131) and a communication port (132) communicated with the inner space (131) are arranged on the upper seat (13), a first end of the air bag (15) is connected to the outer peripheral wall of the upper seat (13), and the air bag (15) is communicated with the inner space (131);

the shock absorber (17) comprises a sleeve (172) and an expansion rod (171) which are mutually assembled in a sliding way, the end part of the sleeve (172) assembled with the expansion rod (171) and the second end of the air bag (15) are assembled in a sealing way, and the expansion rod (171) penetrates through the air bag (15) and is connected with the upper seat (13);

a piston (16), a first end of the piston (16) is connected with a second end of the air bag (15), the piston (16) is communicated with the air bag (15), the end of the sleeve (172) assembled with the telescopic rod (171) extends into the piston (16), the second end of the piston (16) is hermetically assembled with the outer side wall of the sleeve (172), and the sleeve (172) and the piston (16) are relatively fixedly arranged.

3. Air spring according to claim 2,

the piston (16) comprises a body (161) and a cup-shaped portion (162), a first end of the body (161) is connected with the cup-shaped portion (162), a second end of the body (161) is in sealing fit with the outer side wall of the sleeve (172), the cup-shaped portion (162) is provided with a middle opening (1620) for the telescopic rod (171) to pass through, the telescopic rod (171) passes through the middle opening (1620) and then is connected with the upper seat (13), and the end portion of the sleeve (172) abuts against the cup-shaped portion (162).

4. Air spring according to claim 3,

the cup-shaped portion (162) is further provided with a bypass gas port (1621), the bypass gas port (1621) being for communicating the piston (16) with the airbag (15).

5. Air spring according to claim 3,

air spring still includes lower sealing washer (18) and backstop ring (19), the lateral wall of sleeve (172) is equipped with annular card protruding (1721), annular card protruding (1721) is located body (161) is kept away from in the port of cup portion (162), backstop ring (19) cover is located sleeve (172) and butt in annular card protruding (1721) is towards one side of cup portion (162), lower sealing washer (18) cover is located sleeve (172) and butt in backstop ring (19) deviates from one side of annular card protruding (1721), lower sealing washer (18), the port inside wall of body (161) and the lateral wall three of sleeve (172) forms sealed assembly.

6. Air spring according to claim 3,

the air spring further comprises a buffer block (129), the upper seat (13) is provided with a buffer block mounting seat (134), the buffer block mounting seat (134) is located in the inner space (131), the buffer block (129) is mounted in the buffer block mounting seat (134), the telescopic rod (171) sequentially penetrates through the buffer block (129) and the upper seat (13) and then is locked through a locking component (135), and the cup-shaped portion (162) is arranged at intervals with the buffer block (129) when the shock absorber (17) is in a natural state.

7. Air spring according to claim 6,

the air spring further comprises a sealing cover (11) and an upper sealing ring (12), a groove is formed in the upper seat (13), the telescopic rod (171) penetrates out of the groove, the locking assembly (135) is located in the groove, the sealing cover (11) is installed in the groove and covers the locking assembly (135), and the upper sealing ring (12) is assembled between the circumferential side wall of the sealing cover (11) and the groove wall of the groove.

8. Air spring according to claim 7,

the locking assembly (135) comprises an elastic bushing (14) and a nut (136), the elastic bushing (14) is sleeved on the end portion of the telescopic rod (171), the nut (136) is in threaded connection with the telescopic rod (171) and clamps the elastic bushing (14), the elastic bushing (14) is provided with a communication channel (141), and the communication channel (141) is used for communicating a space between the elastic bushing (14) and the sealing cover (11) with the air bag (15).

9. Air spring according to one of claims 2 to 8,

the air spring further comprises a protection cylinder (20), the air bag (15) is arranged in the protection cylinder (20), the first end of the protection cylinder (20) is connected with the air bag (15), and the first end of the protection cylinder (20) and the upper seat (13) are arranged at intervals.

10. An automobile comprising a suspension system including an air spring as claimed in any one of claims 1 to 9.

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