CN109210129B - Hydraulic suspension decoupling structure and hydraulic suspension - Google Patents
Hydraulic suspension decoupling structure and hydraulic suspension Download PDFInfo
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- CN109210129B CN109210129B CN201811181617.2A CN201811181617A CN109210129B CN 109210129 B CN109210129 B CN 109210129B CN 201811181617 A CN201811181617 A CN 201811181617A CN 109210129 B CN109210129 B CN 109210129B
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- decoupling
- runner plate
- film
- channel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a hydraulic suspension decoupling structure which comprises an upper runner plate, a lower runner plate and a decoupling film, wherein the upper runner plate and the lower runner plate are fixedly connected, a decoupling channel for placing the decoupling film and an inertia channel for liquid flowing are formed between the upper runner plate and the lower runner plate, the decoupling film is positioned in the decoupling channel, the upper surface and the lower surface of the decoupling film are both provided with protrusions, and the decoupling film is abutted between the upper runner plate and the lower runner plate through the protrusions. By implementing the hydraulic suspension decoupling structure, the slapping abnormal sound of the vehicle during low-frequency large-amplitude vibration can be reduced, so that the riding comfort is improved.
Description
Technical Field
The invention relates to the field of automobile suspensions, in particular to a hydraulic suspension decoupling structure.
Background
With the continuous development of automobiles, the safety and comfort of automobiles become more and more concerned. In the driving process of the automobile, the vibration of the engine is transmitted to the automobile body through the engine suspension, so that the service life of parts is influenced, and the riding comfort of passengers is further influenced. Therefore, it is becoming more and more important to develop better suspensions to isolate the transmission of engine vibrations to the vehicle body.
The original engine suspension is a rubber suspension which is widely used up to now due to simple structure and low cost, but the rubber suspension has the defects of single performance and basically unchanged rigidity and damping in the using process, so that the requirements of a power assembly for large low-frequency rigidity and large damping and small high-frequency rigidity and small damping cannot be met. And then, hydraulic suspension is generated, the rigidity damping of the hydraulic suspension is variable, but when the hydraulic suspension is excited by high frequency and small amplitude, the liquid hardly flows in time due to the large inertia of the liquid column in the inertia channel, so that the phenomenon of high frequency dynamic hardening is serious.
In order to improve the dynamic hardening of the hydraulic mount at high frequency, a decoupling film is added between an upper liquid chamber and a lower liquid chamber in the conventional hydraulic mount, and the hydraulic mount structure shown in the attached drawing 1 comprises an upper liquid chamber, a lower liquid chamber, an upper runner plate, a lower runner plate and a decoupling film, wherein the upper runner plate and the lower runner plate divide the interior of the hydraulic mount structure into the upper liquid chamber and the lower liquid chamber, the decoupling film is positioned between the upper runner plate and the lower runner plate, and when the hydraulic mount is excited by high frequency and small amplitude, the liquid in a channel of the decoupling film vibrates at high speed along with the decoupling film due to the low rigidity characteristic of the decoupling film during small deformation, so that the high-frequency dynamic rigidity of the hydraulic mount is reduced, and the dynamic hardening is eliminated. However, when an automobile equipped with the hydraulic suspension structure is subjected to low-frequency large-amplitude vibration, such as when a deceleration strip is passed, the hydraulic suspension is stressed in the Z direction, the volume of the upper liquid chamber is compressed and stretched to cause liquid to push the decoupling film to move up and down to slap the upper and lower runner plates, and abnormal sound generated by slapping is transmitted into the automobile, so that riding comfort is affected.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a hydraulic suspension decoupling structure, which can reduce rattling noise, thereby improving ride comfort.
The invention provides a hydraulic suspension decoupling structure, which comprises an upper runner plate, a lower runner plate and a decoupling film, wherein the upper runner plate and the lower runner plate are fixedly connected, a decoupling channel for placing the decoupling film and an inertia channel for liquid flowing are formed between the upper runner plate and the lower runner plate, the decoupling film is positioned in the decoupling channel, the upper surface and the lower surface of the decoupling film are both provided with protrusions, and the decoupling film is abutted between the upper runner plate and the lower runner plate through the protrusions.
Further, the decoupling film forms an interference fit with the lower surface of the upper runner plate and the upper surface of the lower runner plate, and the interference magnitude of the decoupling film is 0.4-0.6 mm.
Furthermore, a decoupling channel inlet is formed in the middle of the upper runner plate, a decoupling channel outlet is formed in the middle of the lower runner plate, reinforcing ribs are arranged on the decoupling channel inlet and the decoupling channel outlet, and the reinforcing ribs are arranged in parallel.
Further, the gap between the reinforcing ribs is more than 2 times of the width of the reinforcing ribs.
Further, the reinforcing ribs of the upper runner plate or the lower runner plate are in point contact with the protrusions on the surface of the decoupling film.
Furthermore, the protrusions on the upper surface and the lower surface of the decoupling film are uniformly distributed multiple circles of annular protrusions, multiple rows of strip-shaped protrusions or wave-shaped protrusions.
Further, the annular bulge, the strip-shaped bulge or the wave-shaped bulge is a continuous bulge or an intermittent bulge.
Further, the decoupling film is composed of a material having elasticity and/or tear resistance.
Further, the protrusions on the upper surface and the protrusions on the lower surface of the decoupling film are integrally formed with the decoupling film.
The invention provides a hydraulic suspension, which comprises an upper liquid chamber, a lower liquid chamber and any one hydraulic suspension decoupling structure, wherein the decoupling structure is limited between the upper liquid chamber and the lower liquid chamber.
Due to the technical scheme, the decoupling structure and the hydraulic suspension have the following beneficial effects:
through the design of the surface structure of the decoupling film, the thickness of the decoupling film and the reinforcing ribs of the runner plate, the slapping motion of the decoupling film in the decoupling structure and the slapping contact area of the decoupling film and the runner plate are reduced, and the slapping abnormal sound of the vehicle under low-frequency large-amplitude vibration is effectively controlled.
The thickness of the decoupling film is moderate, so that the strength requirement of repeated vibration of the decoupling film is met, and the high-frequency low-rigidity characteristic of the decoupling film is also met.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a conventional hydraulic mount;
FIG. 2 is a schematic structural view of a decoupling membrane tested;
FIG. 3 is a schematic structural view of another decoupling membrane tested;
FIG. 4 is a schematic structural diagram of a hydraulic mount decoupling structure according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a decoupling film and a lower runner plate in a hydraulic suspension decoupling structure according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an upper runner plate in a hydraulic suspension decoupling structure according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a decoupling film in a hydraulic suspension decoupling structure according to an embodiment of the present invention.
In the drawings:
1-upper flow passage plate 2-lower flow passage plate 3-decoupling film
4-decoupling channel 5-inertia channel 51-barrier
52-inertia channel inlet 53-inertia channel outlet 6-reinforcing rib
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem of abnormal rattling of the decoupling film, the scheme of the decoupling film is verified in a real vehicle mode, the scheme of the first decoupling film is shown in the attached drawing 2, wrapping edges are additionally arranged on the periphery of the decoupling film in a circle, the decoupling film is in interference fit between an upper flow channel plate and a lower flow channel plate through the wrapping edges, the thickness of a middle area surrounded by the wrapping edges is smaller than that of the wrapping edges, discontinuous bulges are arranged on the upper surface and the lower surface of the middle area, and the scheme is verified in the real vehicle mode, and the abnormal rattle improvement effect is not.
The second decoupling scheme is shown in an attached drawing 3, a discontinuous wrapping edge is additionally arranged on one circle of the periphery of a decoupling film, the decoupling film is in interference fit between an upper flow channel plate and a lower flow channel plate through the wrapping edge, the discontinuous wrapping edge can reduce the contact area between the decoupling film and the upper flow channel plate and between the decoupling film and the lower flow channel plate, the thickness of a middle area surrounded by the wrapping edge is relatively thin, discontinuous bulges are arranged on the upper surface and the lower surface of the middle area, and the scheme is verified by a real vehicle that the effect of improving the abnormal sound is not obvious.
Example one
Referring to fig. 4, a hydraulic suspension decoupling structure provided for an embodiment of the present invention includes an upper flow channel plate 1, a lower flow channel plate 2, and a decoupling film 3, where the upper flow channel plate 1 and the lower flow channel plate 2 are fixedly connected, a decoupling channel and an inertia channel are formed between the upper flow channel plate 1 and the lower flow channel plate 2, and the decoupling film 3 is located in the decoupling channel.
In some possible embodiments, the upper flow field plate 1 and the lower flow field plate 2 have the same shape, such as an oval shape, a circular shape or a polygonal shape, as shown in fig. 5 and 6, the upper flow field plate 1 and the lower flow field plate 2 are connected by a conventional detachable manner, such as a snap-fit manner, after the upper flow field plate 1 and the lower flow field plate 2 are snapped, two independent passages are formed between the upper flow field plate 1 and the lower flow field plate 2, the upper flow field plate 1 and the lower flow field plate 2 are separated by providing an annular groove on the lower surface of the upper flow field plate 1 or the upper surface of the lower flow field plate 2 and correspondingly providing an annular pillar on the upper surface of the lower flow field plate 2 or the lower surface of the upper flow field plate 1, when the upper flow field plate 1 and the lower flow field plate 2 are snapped, the annular pillar is nested in the annular groove to play a role of separation, and the area inside the annular groove or the annular pillar forms a, the annular groove or the annular column and the area between the outer edges of the runner plates form an annular inertial channel 5.
A baffle part 51 is arranged at one position in the annular inertia channel 5, an inlet 52 of the inertia channel 5 is arranged at the edge part of the upper flow channel plate 1 at one side of the baffle part 51, an inertia channel outlet 53 is arranged at the edge part of the lower flow channel plate 2 at the other side of the baffle part 51, preferably, the inertia channel inlet 52 and the inertia channel outlet 53 are both arranged at positions relatively close to the baffle part 51, when the decoupling structure is impacted by liquid vibration with low frequency and large amplitude, the liquid flows in from the inertia channel inlet 52, surrounds the inertia channel 5 for one circle and finally flows out through the inertia channel outlet 53, and the damping effect is increased to the maximum extent.
The decoupling structure is characterized in that a decoupling channel inlet is formed in the middle area of the upper runner plate 1, a decoupling channel outlet is formed in the middle area of the lower runner plate 2, multiple rows of parallel reinforcing ribs 6 are respectively arranged at the decoupling channel inlet and the decoupling channel outlet in order to increase the strength of the decoupling structure, the size of the slapping contact area and the strength of the decoupling structure are comprehensively considered, and the gap between the reinforcing ribs is more than 2 times of the width of the reinforcing ribs.
The decoupling membrane 3 is arranged in the decoupling channel 4, as shown in fig. 7, the shape of the decoupling membrane 3 is consistent with that of the decoupling channel 4, such as an ellipse, a circle or a polygon, the thickness of the decoupling membrane 3 is uniform, the upper surface and the lower surface of the decoupling membrane 3 are both provided with integrally formed protrusions, the protrusions on the upper surface of the decoupling membrane 3 abut against the reinforcing ribs 6 of the upper runner plate 1, and the protrusions on the lower surface of the decoupling membrane 3 abut against the reinforcing ribs 6 of the lower runner plate 2.
In some possible embodiments, the protrusions on the upper surface and the lower surface of the decoupling membrane 3 are continuous wave-shaped protrusions distributed uniformly, and the extending direction of the wave-shaped protrusions is arranged at an angle with the reinforcing rib 6, for example, at an angle of 90 degrees, so that the protrusions of the decoupling membrane 3 are in point contact with the reinforcing rib 6 to reduce the slapping contact area, and the high-frequency low-rigidity characteristic of the decoupling membrane 3 can be ensured because the protrusions are wave-shaped protrusions. Optionally, the protrusions on the upper surface and the lower surface of the decoupling film 3 are multiple circles of annular protrusions, and the annular protrusions of the decoupling film 3 are in point contact with the reinforcing ribs 6, so that the slapping contact area with the runner plate is reduced. Optionally, the protrusions on the upper surface and the lower surface of the decoupling film 3 are multiple rows of strip-shaped protrusions, and the strip-shaped protrusions of the decoupling film 3 are in point contact with the reinforcing ribs 6 to reduce the slapping contact area with the runner plate. Optionally, the wavy bulge, the multiple circles of annular bulges or the multiple rows of strip-shaped bulges can be discontinuously arranged bulges, and when the bulges are discontinuously arranged, the contact area between the decoupling film 3 and the runner plate can be further reduced, so that the rattling abnormal sound is further reduced.
In some possible embodiments, the gap between the upper flow channel plate 1 and the lower flow channel plate 2 is 6mm, the thickness of the decoupling film 3 is 6.5mm, the decoupling film 3 forms an interference fit, and the interference of the decoupling film 3 is 0.5mm, so as to reduce the slapping motion of the decoupling film 3 in the decoupling structure.
In order to guarantee the high-frequency low stiffness characteristic of the decoupling membrane 3, said decoupling membrane 3 is made of a material with a certain elasticity and tear resistance, such as NR rubber.
Therefore, through actual vehicle small batch verification and evaluation, when the vehicle passes through the deceleration strip at the speed of 20-30 Km/h, the abnormal sound of the vehicle basically disappears, the subjective evaluation is more than 6.5 points, and the evaluation results are detailed in a table 1:
TABLE 1 results of the verification and evaluation of small batches of real vehicles
Example two
The second aspect of the embodiment of the invention also provides a hydraulic suspension, which comprises an upper liquid chamber, a lower liquid chamber and any one decoupling structure of the hydraulic suspension, wherein the decoupling structure is limited between the upper liquid chamber and the lower liquid chamber.
In conclusion, the decoupling structure and the hydraulic mount reduce the slapping motion of the decoupling film 3 and the slapping contact area of the decoupling film 3 and the runner plate, and effectively control the slapping abnormal sound when the vehicle is subjected to low-frequency large-amplitude vibration.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A hydraulic suspension decoupling structure comprises an upper runner plate (1), a lower runner plate (2) and a decoupling film (3), wherein the upper runner plate (1) and the lower runner plate (2) are fixedly connected, a decoupling channel (4) for placing the decoupling film and an inertia channel (5) for liquid flowing are formed between the upper runner plate (1) and the lower runner plate (2), the decoupling film (3) is positioned in the decoupling channel (4), the thickness of the decoupling film (3) is uniform, the upper surface and the lower surface of the decoupling film (3) are both provided with protrusions which are discontinuous wave-shaped protrusions, the decoupling film (3) abuts between the upper runner plate (1) and the lower runner plate (2) through the protrusions, and the decoupling film (3) forms an interference fit with the lower surface of the upper runner plate (1) and the upper surface of the lower runner plate (2), the interference magnitude of the decoupling film (3) is 0.4-0.6 mm;
the decoupling device is characterized in that a decoupling channel inlet is formed in the middle of the upper runner plate (1), a decoupling channel outlet is formed in the middle of the lower runner plate (2), reinforcing ribs (6) are arranged at the decoupling channel inlet and the decoupling channel outlet, the reinforcing ribs (6) of the upper runner plate (1) or the lower runner plate (2) are in point contact with protrusions on the surface of the decoupling film (3), and the reinforcing ribs are arranged in parallel.
2. A structure according to claim 1, characterized in that the gap between the ribs (6) is more than 2 times the width of the ribs.
3. Hydraulic suspension decoupling structure according to claim 1, characterized in that the decoupling membrane (3) consists of a material with elasticity and/or tear resistance.
4. A hydraulically suspended decoupling structure as claimed in claim 1, characterized in that the projections of the upper surface and the projections of the lower surface of the decoupling membrane (3) are formed integrally with the decoupling membrane (3).
5. A hydraulic mount comprising an upper fluid chamber, a lower fluid chamber and the decoupling structure of any one of claims 1-4, wherein the decoupling structure is confined between the upper fluid chamber and the lower fluid chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811181617.2A CN109210129B (en) | 2018-10-11 | 2018-10-11 | Hydraulic suspension decoupling structure and hydraulic suspension |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811181617.2A CN109210129B (en) | 2018-10-11 | 2018-10-11 | Hydraulic suspension decoupling structure and hydraulic suspension |
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| CN109210129A CN109210129A (en) | 2019-01-15 |
| CN109210129B true CN109210129B (en) | 2021-01-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110103693A (en) * | 2019-03-19 | 2019-08-09 | 宁波拓普集团股份有限公司 | A kind of hydraulic mount |
| CN110645309B (en) * | 2019-09-23 | 2021-06-18 | 安徽誉林汽车部件有限公司 | Decoupling diaphragm structure for hydraulic suspension |
| CN111677804A (en) * | 2020-06-08 | 2020-09-18 | 吉利汽车研究院（宁波）有限公司 | Hydraulic suspension system and vehicle |
| CN113494557B (en) * | 2021-07-27 | 2022-07-05 | 重庆长安汽车股份有限公司 | Decoupling film, suspension assembly and vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4212621B2 (en) * | 2006-10-30 | 2009-01-21 | 東洋ゴム工業株式会社 | Liquid-filled vibration isolator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202402554U (en) * | 2011-12-30 | 2012-08-29 | 宁波泛亚汽车部件有限公司 | Hydraulic mount of engine |
| CN102720797A (en) * | 2012-06-28 | 2012-10-10 | 宁波拓普集团股份有限公司 | Hydraulic mounting runner assembly of automobile engine |
| CN103758917B (en) * | 2013-12-30 | 2016-02-03 | 长城汽车股份有限公司 | Engine hydraulic mount and there is the vehicle of this engine hydraulic mount |
| DE102014222929A1 (en) * | 2014-11-11 | 2016-05-12 | Contitech Vibration Control Gmbh | Hydro bearing and motor vehicle with such a hydraulic bearing |
| CN204592126U (en) * | 2015-04-29 | 2015-08-26 | 安徽江淮汽车股份有限公司 | A kind of hydraulic mount |
| KR101640556B1 (en) * | 2015-08-31 | 2016-07-19 | 현대자동차주식회사 | Install structure of membrane |
| CN106090114A (en) * | 2016-08-11 | 2016-11-09 | 安徽中鼎减震橡胶技术有限公司 | A kind of Novel noise-insulating structure decoupling diaphragm |
| CN107461448A (en) * | 2017-08-25 | 2017-12-12 | 启东永兴橡胶制品有限公司 | A kind of trapezoidal hydraulic mount |
| CN207683315U (en) * | 2017-12-25 | 2018-08-03 | 北京长城华冠汽车技术开发有限公司 | Novel hydraulic suspension decoupling membrane structure and hydraulic mount |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4212621B2 (en) * | 2006-10-30 | 2009-01-21 | 東洋ゴム工業株式会社 | Liquid-filled vibration isolator |
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