CN111775683B - Variable-rigidity suspension system - Google Patents
Variable-rigidity suspension system Download PDFInfo
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- CN111775683B CN111775683B CN202010564958.9A CN202010564958A CN111775683B CN 111775683 B CN111775683 B CN 111775683B CN 202010564958 A CN202010564958 A CN 202010564958A CN 111775683 B CN111775683 B CN 111775683B
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- suspension structure
- rubber
- rubber suspension
- hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1283—Adjustable supports, e.g. the mounting or the characteristics being adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1275—Plastically deformable supports
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a variable-rigidity suspension system which comprises a primary rubber suspension structure, a secondary rubber suspension structure and a hydraulic suspension structure which are arranged up and down. A connecting structure is arranged between the primary rubber suspension structure and the secondary rubber suspension structure, an upper connecting piece used for connecting a power assembly is arranged above the primary rubber suspension structure, and a lower connecting piece used for connecting a vehicle body is arranged below the secondary rubber suspension structure. The invention combines the rubber suspension and the hydraulic suspension together by an ingenious mode, gives consideration to the cost and the reliability, and realizes the function of rigidity adjustment under special working conditions of larger amplitude and the like.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a variable stiffness suspension system.
Background
Suspension systems are automotive powertrain components used to reduce and control the transmission of engine vibrations and to provide support. During design, under the condition of larger amplitude (impact and violent vibration working conditions), the suspension system generally has larger rigidity, so that the vibration amplitude of the power assembly is limited, the power assembly is protected, and the problems of collision, abnormal sound and the like are solved; under the condition of smaller amplitude (under a stable working condition), the suspension system generally has smaller rigidity, and the compression and tension stroke of the suspension is increased, so that more vibration energy is absorbed, and the transmission of vibration is reduced.
In the prior art, the common suspension systems are divided into two types: rubber suspension systems and hydraulic suspension systems. The rubber suspension system is largely used on vehicles due to the advantages of low manufacturing cost and good reliability, but the rubber suspension system does not have the rigidity adjusting function under larger amplitude. For example, chinese patent publications CN110778631A and CN110315922A, etc., have solved the problems of rubber suspension systems, such as position limitation and noise, from different angles, but have not solved the problem of stiffness adjustment under large amplitude.
The hydraulic suspension system can realize the rigidity adjusting function under specific working conditions, but has the defects of complex structure, high manufacturing cost and poor reliability, thereby limiting the application range and application objects of the system. Chinese patent No. CN210397565U discloses a hydraulic suspension system, which can improve the performance of large damping and high dynamic stiffness at low frequency of hydraulic suspension, but has a complex structure, more flow channels and components, and higher cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a variable-stiffness suspension system which skillfully combines a rubber suspension and a hydraulic suspension by using a special combination form, gives consideration to cost and reliability, and realizes the function of stiffness adjustment under the condition of large amplitude.
In order to achieve the purpose, the invention adopts the technical scheme that: a variable-rigidity suspension system comprises a primary rubber suspension structure and a secondary rubber suspension structure which are arranged up and down, and further comprises a hydraulic suspension structure arranged in the secondary rubber suspension structure; a connecting structure is arranged between the primary rubber suspension structure and the secondary rubber suspension structure; the upper portion of one-level rubber suspension structure is provided with the upper portion connecting piece that is used for connecting the power assembly, the below of second grade rubber suspension structure is provided with the lower part connecting piece that is used for connecting the automobile body.
Specifically, the primary rubber suspension structure comprises an upper layer framework, an upper layer rubber body and a lower layer framework; second grade rubber suspension structure includes the joint plate, lower floor's rubber body and lower floor's skeleton, wherein, lower floor's skeleton does one-level rubber suspension structure and the sharing of second grade rubber suspension structure.
Specifically, the hydraulic suspension structure comprises a hydraulic chamber located inside the lower rubber body and hydraulic fluid located in the hydraulic chamber.
Specifically, the connecting structure comprises an upper connecting pipe column and a lower connecting pipe column.
Specifically, a clamping groove is formed in the upper connecting pipe column, and a buckle and an elastic sheet which are matched with the clamping groove are arranged in the lower connecting pipe column and are used for connecting the primary rubber suspension structure and the secondary rubber suspension structure under special working conditions.
Further, the combination plate is located between the connection structure and the hydraulic chamber, and a check valve and a pressure relief hole for circulating the hydraulic fluid are arranged on the combination plate.
Preferably, for ease of connection, the upper and lower connectors are connection studs.
Further, the variable stiffness suspension system further comprises a positioning column.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a variable-stiffness suspension system, which comprises a primary rubber suspension structure, a secondary rubber suspension structure and a hydraulic suspension structure arranged in the secondary rubber suspension structure, wherein the rubber suspension and the hydraulic suspension are skillfully combined by utilizing a special combination form; the suspension system has the advantages that the cost and the reliability are considered, and meanwhile, under the condition of large amplitude (special working condition), the rigidity of the suspension system is the sum of the rigidity of the upper layer rubber body and the rigidity of the lower layer rubber body, so that the rigidity of the whole system is obviously improved, and the function of adjustable rigidity is realized, so that the problems of damage, abnormal sound, reduced vibration isolation performance and suspension tearing caused by large displacement of a power system are solved; under the condition of small amplitude (common working condition), the rigidity of the suspension system is only the rigidity of the upper rubber body, so that the rigidity recovery function under the small amplitude is realized, and the vibration isolation performance of the suspension system under different working conditions is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention under a special condition (a larger amplitude condition);
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural diagram of the present invention under a general condition (a smaller amplitude condition);
fig. 4 is a partially enlarged view of fig. 3.
Detailed Description
It is noted that the term "automobile" or other similar terms, as used herein, generally includes motor vehicles, such as passenger automobiles including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, and other alternative fuel vehicles, and the like.
In addition, as used herein, the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Unless stated to the contrary, directional words such as "up, down, left, right, etc., as used herein are generally with respect to the state of normal travel of the vehicle. Specifically, when the vehicle is normally running, the direction toward the ceiling is "up", the direction toward the floor is "down", the direction toward the left wheel is "left", the direction toward the right wheel is "right", and "inside and outside" refer to the inside and outside of the outline of the corresponding component.
The following detailed description of the present invention is provided in conjunction with the accompanying fig. 1-4. The invention provides a variable-stiffness suspension system which comprises a primary rubber suspension structure A and a secondary rubber suspension structure B which are arranged up and down, and a hydraulic suspension structure C arranged in the secondary rubber suspension structure B; a connecting structure D is arranged between the primary rubber suspension structure A and the secondary rubber suspension structure B; an upper connecting piece 1 used for connecting a power assembly (not shown in the figure) is arranged above the primary rubber suspension structure A, and a lower connecting piece 15 used for connecting a vehicle body (not shown in the figure) is arranged below the secondary rubber suspension structure B.
Each structure is described in detail below. Specifically, the primary rubber suspension structure A comprises an upper layer framework 2, an upper layer rubber body 5 and a lower layer framework 14; the secondary rubber suspension structure B comprises a combination plate 6, a lower rubber body 11 and a lower framework 14, wherein the lower framework 14 is a common component of the primary rubber suspension structure A and the secondary rubber suspension structure B, and the common component is a common component of the two structures. Preferably, the upper layer framework 2, the upper layer rubber body 5 and the lower layer framework 14 are vulcanized together to form a primary rubber suspension structure A; the combination plate 6, the lower rubber body 11 and the lower framework 14 are vulcanized together to form the secondary rubber suspension structure B, as another embodiment, the combination mode between the components of the primary rubber suspension structure a and the secondary rubber suspension structure B may also adopt other process methods, and the combination mode is within the protection scope of the invention as long as the purpose of the invention can be achieved.
Specifically, the hydraulic suspension structure C includes a hydraulic chamber 12 located inside the lower rubber body 11, the hydraulic chamber 12 is filled with a hydraulic fluid 13, and the hydraulic fluid 13 is a hydraulic fluid commonly used in the art, such as ethylene glycol.
Specifically, the connecting structure D includes an upper connecting string 3a and a lower connecting string 3 b. Go up and be provided with draw-in groove 4 on the connecting string 3a inside wall, be provided with buckle 7 and shell fragment 8 of mutually supporting with draw-in groove 4 on connecting string 3B inside wall down for connect one-level rubber suspension structure A and second grade rubber suspension structure B under special operating mode (under the great amplitude operating mode).
Further, the joint plate 6 is located between the connection structure D and the hydraulic pressure chamber 12, and the joint plate 6 is provided with a check valve 9 and a relief hole 10 for circulating hydraulic fluid 13. The check valve 9 and the pressure relief hole 10 may be of a type commonly used in the art, and may be selected according to actual conditions, and are within the protection scope of the present invention.
Preferably, the upper connecting member 1 and the lower connecting member 15 are connection studs for easy connection, and as other embodiments, the upper connecting member 1 and the lower connecting member 15 may also take other forms, and are within the protection scope of the present invention.
Further, the variable stiffness suspension system further includes a positioning column 16, preferably, the positioning column 16 is disposed below the lower framework 14, and according to practical situations, the positioning column 16 may also be disposed at other suitable positions, and all within the scope of the present invention.
The working principle of the present invention under two working conditions will be explained below with reference to the accompanying drawings.
As shown in FIGS. 1-2, when the suspension system is under a working condition with large amplitude (special working condition), the compression stroke of the primary rubber suspension structure A is larger than the distance H1（H1In the schematic view of fig. 4), the primary rubber suspension structure a contacts and compresses with the secondary rubber suspension structure B in the compression process, the lower rubber body 11 is compressed, under the action of pressure, hydraulic fluid 13 in the hydraulic chamber 12 flows into the lower connecting pipe column 3B through the check valve 9 and the pressure relief hole 10, the pressure in the lower connecting pipe column 3B is increased, the elastic sheet 8 is compressed by the hydraulic fluid 13, and the buckle 7 is popped out, so as to be buckled with the clamping groove 4 in the upper connecting pipe column 3 a. At this time, the primary rubber suspension structure a and the secondary rubber suspension structure B act together. When the suspension system is stretched, as the hydraulic liquid 13 can only flow out of the pressure relief hole 10, the leakage amount of the hydraulic liquid 13 at the moment is smaller than or equal to the supplement amount during compression, the pressure in the lower connecting pipe column 3B is still large, so that the buckle 7 can be continuously popped up, the primary rubber suspension structure A and the secondary rubber suspension structure B act together, the rigidity of the suspension system is the sum of the rigidity of the upper rubber body 5 and the rigidity of the lower rubber body 11, and the rigidity of the whole system is remarkably improved.
As shown in fig. 3-4, when the suspension system is under a working condition with a small amplitude (general working condition), the primary rubber suspension structure a no longer compresses the secondary rubber suspension structure B, the hydraulic fluid 13 in the lower rubber body 11 is no longer supplemented into the lower connecting pipe column 3B, meanwhile, the hydraulic fluid 13 continuously flows into the hydraulic chamber 12 from the pressure relief hole 10, the pressure in the lower connecting pipe column 3B is reduced, the elastic piece 8 rebounds, the buckle 7 is retracted, the upper connecting pipe column 3a is separated from the lower connecting pipe column 3B, and at this time, the rigidity of the suspension system is only the rigidity of the upper rubber body 5, so that the vibration isolation performance of the suspension system under the working condition is ensured.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (3)
1. A variable stiffness suspension system is characterized by comprising a primary rubber suspension structure and a secondary rubber suspension structure which are arranged up and down, and further comprising a hydraulic suspension structure arranged in the secondary rubber suspension structure; a connecting structure is arranged between the primary rubber suspension structure and the secondary rubber suspension structure; an upper connecting piece used for connecting a power assembly is arranged above the primary rubber suspension structure, and a lower connecting piece used for connecting a vehicle body is arranged below the secondary rubber suspension structure; the primary rubber suspension structure comprises an upper layer framework, an upper layer rubber body and a lower layer framework; the secondary rubber suspension structure comprises a combination plate, a lower layer rubber body and a lower layer framework, wherein the lower layer framework is shared by the primary rubber suspension structure and the secondary rubber suspension structure; the hydraulic suspension structure comprises a hydraulic chamber positioned inside the lower rubber body and hydraulic liquid positioned in the hydraulic chamber; the connecting structure comprises an upper connecting pipe column and a lower connecting pipe column; a clamping groove is formed in the upper connecting pipe column, and a buckle and an elastic sheet which are matched with the clamping groove are formed in the lower connecting pipe column and are used for connecting the primary rubber suspension structure and the secondary rubber suspension structure under the working condition that the suspension system has larger amplitude; the combination plate is located between the connecting structure and the hydraulic chamber, and a check valve and a pressure relief hole for circulating the hydraulic fluid are arranged on the combination plate.
2. The variable stiffness suspension system of claim 1 wherein the upper link and the lower link are connection studs.
3. The variable stiffness suspension system of claim 2 further comprising a locator post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564958.9A CN111775683B (en) | 2020-06-19 | 2020-06-19 | Variable-rigidity suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564958.9A CN111775683B (en) | 2020-06-19 | 2020-06-19 | Variable-rigidity suspension system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111775683A CN111775683A (en) | 2020-10-16 |
| CN111775683B true CN111775683B (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010564958.9A Active CN111775683B (en) | 2020-06-19 | 2020-06-19 | Variable-rigidity suspension system |
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| CN (1) | CN111775683B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3629807A1 (en) * | 1986-09-02 | 1988-03-10 | Opel Adam Ag | Two-chamber mount |
| DE3917586C1 (en) * | 1989-05-30 | 1990-12-20 | Metzeler Gmbh, 8000 Muenchen, De | |
| CN101324258B (en) * | 2008-07-24 | 2010-06-23 | 东风襄樊旅行车有限公司 | Adjustable rigidity-changing suspension cushion apparatus |
| CN201288786Y (en) * | 2008-11-07 | 2009-08-12 | 安徽中鼎减震橡胶技术有限公司 | Automobile engine hydraulic suspension |
| CN203335718U (en) * | 2013-05-17 | 2013-12-11 | 宁波市明诚汽车部件有限公司 | Engine hydraulic mounting mechanism provided with flow blocking block |
| CN106704470A (en) * | 2017-01-09 | 2017-05-24 | 重庆市锋盈汽车配件有限公司 | Self-adjusting automobile hydraulic mount |
| CN108995522A (en) * | 2017-06-07 | 2018-12-14 | 株洲时代新材料科技股份有限公司 | A kind of engine suspension soft pad assembly |
| CN107366710A (en) * | 2017-08-25 | 2017-11-21 | 启东永兴橡胶制品有限公司 | A kind of hydraulic mount of two grad vibration isolation |
| CN110103694B (en) * | 2019-04-19 | 2021-02-19 | 浙江吉利控股集团有限公司 | Two-stage vibration isolation hydraulic suspension |
-
2020
- 2020-06-19 CN CN202010564958.9A patent/CN111775683B/en active Active
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| CN111775683A (en) | 2020-10-16 |
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