VIBRATION DAMPENING BUSHING WITH MICRO-TOPOGRAPHIC METAL SURFACES

Abstract

The invention relates to a vibration damping bushing with micro-topographic surface structures that enhance mechanical adhesion at the metal-rubber interface between metal tubes and elastomeric rubber parts. The aim is to increase interface strength, particularly under axial, torsional, and radial dynamic loads, by providing mechanical interlocking in addition to chemical bonding thanks to the micro-topographic structures.

Description

1 TARIFF VIBRATION DAMPENER WITH MICRO-TOPOGRAPHIC METAL SURFACES ZODIAC SIGN 5 TECHNICAL FIELD The invention relates to vibration dampers used in suspension systems of motor vehicles. It relates to bushings, and more specifically, to metal tubes and elastomeric rubber parts. micro- to increase mechanical adhesion at the metal-rubber interface between them metal-rubber interface with topographic surface structures and under dynamic loads 10 It relates to a vibration damping bushing with improved durability. PREVIOUS TECHNIQUE In motor vehicles, at the points where suspension components connect to the vehicle chassis. The bushings used transmit 15% of the vehicle's movement through the road and suspension system. Damping of vibrations and noises, relative between suspension components control of movements and operation of the suspension system under dynamic loads These are vibration damping elements used to regulate vibration behavior. These vibration-damping bushings vary depending on their intended use and design. Although they have different geometric structures, these 20 are made with one or more metal elements. It consists of elastomeric rubber sections positioned between metal elements. It is possible to come. During the bonding of rubber parts to metal pipes, the elastomeric layer must meet the metal surface. a sufficient and durable rubber that can maintain its consistency throughout the working conditions A connection must be established. For this purpose, various surface coatings are applied to metal surfaces. Preparation processes are applied and chemical bonds are formed between the metal surface and the rubber. Bonding adhesive systems are used. Bushings are designed to withstand not only static loads in operating conditions, but also simultaneous or different loads. Repetitive and variable dynamics in axial, torsional and radial directions under operating conditions. 2 They are also subjected to dynamic loads. These dynamic loads cause shear at metal-rubber interfaces. This can lead to tendencies towards peeling, opening, and / or separation. Especially in three-tube vibration damping bushings, a metal inner tube, a metal middle tube 5 and a metal outer tube is positioned concentrically; the inner tube and the middle tube There are elastomeric rubber sections in the middle and between the middle and outer tubes. In these structures, the use of a central tube creates an elastomeric region between two metal tubes. It is separated into individual rubber layers, and accordingly, the surface of each rubber layer... its thickness is 10 compared to a single rubber layer in two-tube structures with similar external dimensions. This reduction in rubber thickness allows for the dynamic loads to be transferred to thinner rubber. transfer through the layers and consequently at metal-rubber interfaces This can lead to increased stress and deformation. Especially in three-tube bushing designs where rubber wall thickness is low, metal- Due to the high stresses and deformations occurring at the rubber interfaces, 15 The interface bonding formed by chemical bonding can be subject to local stress. These stresses occur under the influence of repetitive and variable dynamic loads. Repeated application results in separation, peeling, and / or opening at the metal-rubber interface. Damage can occur in this manner and this damage can spread along the interface. It can progress. 20 In current technology, rubber is applied to the surfaces of the inner, middle, and outer tubes that come into contact with the rubber. Sandblasting for the purpose of cleaning and / or preparing the surface for adhesion, Phosphating and / or similar surface preparation processes can be applied; then the metal to provide chemical bonding between the surface and the elastomeric rubber, primer and Vulcanization process by applying secondary adhesive layers 25 It can be accomplished. In adhesive systems used for rubber-metal bonding, the bond between the metal surface and the primer... layers, primary and secondary layers, and secondary layer with elastomeric rubber. through chemical interactions that occur between them under vulcanization conditions A bond can be formed between metal and rubber. The chemical in question is 30. Bonding allows rubber parts to adhere to metal surfaces, especially... formation at the metal-rubber interface under the influence of repeated and variable dynamic loads It is possible for stresses and deformations to locally stress the connection in question. It is possible. 3 However, in three-tube vibration damping bushings, both the inner and outer parts of the middle tube... the contact of its outer surface with different rubber parts and the specific properties of those surfaces It plays an effective role in the transmission of dynamic loads in the axial and torsional directions. 5 Therefore, metal-rubber interface bonding based solely on chemical bonding It is possible for localized strain to occur under long-term dynamic working conditions. This is possible. Under repeated axial and torsional dynamic loads at the interface The repetition of the slippage and relative movements that occur, the time of the connection due to strain within and separation, peeling and / or opening along the interface 10 This can cause the damage to progress. In contrast, the outer surface of the inner tube that comes into contact with rubber and the outer surface of the outer tube that comes into contact with rubber... The inner surface in contact with the bushing also affects the dynamics of the operating conditions, especially in the radial direction. It forms metal-rubber interfaces in the transfer of loads. Radial loadings The stresses and deformations occurring at these interfaces below, rubber 15 the tendency of parts to separate from metal surfaces and / or open up along the interface It can increase. Therefore, three-tube vibration dampers are particularly suitable where the rubber wall thickness is low. in bushings, the stress to which metal-rubber interfaces are subjected under dynamic loads, more efficient handling of deformation, shear and relative movements and intermediate 20 reducing the tendency for separation, peeling and / or opening that may occur on the surface A vibration-damping bushing is needed to provide this. In conclusion, all the problems mentioned above necessitate an innovation in the relevant field. It has made it mandatory. THE PURPOSE OF THE INVENTION 25 The present invention aims to eliminate the aforementioned problems and provide technical solutions in the relevant field. This necessitates making an innovation. The main purpose of the invention is to combine metal pipes with elastomeric rubber under dynamic operating conditions. Separation that may occur at the metal-rubber interfaces between the parts, A vibration damping bushing with increased resistance to slippage and / or detachment. 30 to obtain. 4 Another aim of the invention is to create three-tube vibration systems, especially where the rubber wall thickness is low. In damping bushings, axial, torsional and / or radial stresses of metal-rubber interfaces. The aim is to increase its resistance under repeated and variable dynamic loads in different directions. 5 Another purpose of the invention is to protect the surfaces of metal pipes that come into contact with rubber parts. through the micro-topographic surface structures created at the metal-rubber interface In addition to chemical bonding, mechanical adhesion and mechanical locking effect. to create. Another objective of the invention is to determine the geometric properties of the micro-topographic surface structure, in relation to the relevant 10 suitable for the dynamic loading conditions to which the metal-rubber interface is subjected by structuring it, slippage, abrasion, separation and / or slippage that may occur at the interface The aim is to reduce the tendency for opening up. Another purpose of the invention is to ensure that the inner and outer parts of the central tube come into contact with the rubber components. on their surfaces, especially under dynamic loads in the axial and torsional directions 15 micro- The aim is to provide topographic surface structures. Another purpose of the invention is to create a connection between the outer surface of the inner tube and the rubber part that comes into contact with the outer surface. Dynamic range, especially in the radial direction, on the inner surface of the pipe that comes into contact with the rubber part. 20 against the tendency of the metal-rubber interface to separate and / or open under loads The aim is to provide micro-topographic surface structures that increase mechanical resistance. Another aim of the invention is to create elastomeric rubber parts during vulcanization. indentations, protrusions, channels and / or formed by the micro-topographic surface structures of the material its penetration into similar micro-geometric structures and the words after vulcanization By ensuring mechanical retention in the structures in question, it provides 25 at the metal-rubber interface. The aim is to create a mechanical locking effect. Another aim of the invention is to create micro-structures at the metal-rubber interface through chemical bonding. Mechanical adhesion and mechanical locking resulting from the topographic surface structure. By using their combined effects, intermediate under repeated and variable dynamic loads The aim is to increase the strength of the surface bond. 30 Another aim of the invention is to examine the exposure of different metal-rubber contact surfaces to the relevant surface. different geometric characteristics and directions depending on the dominant type of dynamic loading it is subjected to. and / or the use of micro-topographic surface structures with distributions to provide. Another aim of the invention is to address potential damage at metal-rubber interfaces and 5 Dynamic operation of the vibration damping bushing by reducing the tendency of detachment. The aim is to improve its performance and service life. BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a representative view of the vibration damping bushing (1) that is the subject of the invention. It has been given. Figure 2 shows a representative cross-sectional view of the vibration damping bushing (1) that is the subject of the invention. It has been given. Figure 3 shows a representation of the vibration damping bushing (1) of the invention, a 15 The appearance is given. EXPLANATION OF REFERENCE NUMBERS IN THE FIGURES 1. Vibration damping bushing 10. Inner tube 12. The outer surface of the inner tube is 20 20. Middle tube 21. Inner surface of the central tube. 22. The outer surface of the central tube. 30. External pipe 31. Inner surface of the outer pipe 25 40. 1. Rubber part 50. 2. Rubber part 6 DETAILED DESCRIPTION OF THE INVENTION In this detailed description, the subject of the invention is the vibration damping bushing (1), the subject of which is 5 with examples that will not create any limiting effects in order to ensure a good understanding. is explained Figure 1 shows a representative view of the vibration damping bushing (1) which is the subject of the invention. Figure 2 shows a representative cross-sectional view of the vibration damping bushing (1) that is the subject of the invention. It has been given. 10 The invention consists of a concentrically positioned metal inner tube (10), a metal middle tube (20) and between a metal outer pipe (30) and the said metal pipes (10, 20, 30) a vibration damper containing positioned elastomeric rubber parts (40, 50) The bushing (1) has the characteristic of being in contact with the rubber parts (40, 50). outer surface of the inner tube (12), 15 inner surface of the middle tube (21), outer surface of the middle tube (22) and inner surface of the outer pipe (31) rubber and metal on at least one of the metal surfaces in question 20 micro-geometric structures designed to increase mechanical adhesion between them It is characterized by the presence of a micro-topographic surface structure. The subject of the invention is a vibration damping bushing (1), with concentrically positioned metal an inner tube (10), a metal middle tube (20) and a metal outer tube (30) with the said metal Elastomeric rubber sections (40, 50) positioned between tubes (10, 20, 30) It includes. 25 Figure 3 shows a representative exploded view of the vibration damping bushing (1) that is the subject of the invention. It has been given. Inner tube (10), middle tube (20) and outer tube (30) are made of metal material, preferably It has a cylindrical and hollow structure. The outer surface of the inner tube (12) and the inner surface of the middle tube (21) between the 2nd rubber part (50), the outer surface of the middle tube (22) and the inner surface of the outer tube 30 Between (31), the 1st rubber part (40) is positioned. Rubber parts (40, 50), It is made of elastomeric rubber material and undergoes a vulcanization process. 7 relevant metal surfaces, - outer surface of the inner tube (12), inner surface of the middle tube (21), middle tube outer surface (22) and inner surface of the outer pipe (31)- by connecting with the inner tube (10), the middle tube (20) and the outer tube (30) elastomeric 5 It creates connection areas. Within the scope of the invention, internal parts forming metal-rubber contact with rubber parts (40, 50) are included. outer surface of the pipe (12), inner surface of the middle pipe (21), outer surface of the middle pipe (22) and outer on at least one of the metal surfaces in question, including the inner surface of the pipe (31), the metal with 10 micro-geometric structures designed to increase mechanical adhesion between rubber There is a micro-topographic surface structure that has formed. Micro-topographic surface structure, metal surfaces - outer surface of the inner tube (12), middle tube inner surface (21), outer surface of the middle tube (22) and inner surface of the outer tube (31) - with rubber by changing the surface geometry in the contact area between sections (40, 50), During vulcanization, the micro-geometric 15 of the elastomeric rubber material... penetrating into structures and mechanically adhering to the metal surface This provides an opportunity. Thus, at the metal-rubber interface, the existing chemical In addition to bonding, mechanical holding and / or mechanical locking effect is being created. Geometric characteristics of the micro-topographic surface structure; the relevant metal surface - the outer 20 of the inner pipe surface (12), inner surface of the middle tube (21), outer surface of the middle tube (22) and the inner surface of the outer tube surface (31) - location, thickness of rubber parts (40, 50), elastomeric used the properties of the rubber material and the exposure of the relevant metal-rubber interface This is determined based on dynamic loading conditions. In this context, the geometry, orientation, depth, and width of the micro-topographic surface structure are examined. frequency, distance between structures, relative position and surface area The distribution can be changed. Micro-topographic surface structure; oriented micro-channels, micro-grooves, micro- indentations, micro-protrusions, micro-pits, micro-holes, micro-teeth, micro-pins and / or one or combination of similar micro-geometric structures 30 These micro-geometric structures can be formed continuously on the metal surface. It can be formed in a discrete or regular, repetitive, irregular and / or variable manner. They can also be positioned at intervals. 8 The orientation of the micro-geometric structures is the outer surface of the relevant metal surface - inner tube (12), middle inner surface of the pipe (21), outer surface of the middle pipe (22) and inner surface of the outer pipe (31) - exposed This is determined according to the dominant dynamic loading direction. 5 In this context, these structures can be longitudinal, transverse, or inclined relative to the axial direction. cross, circumferential, radial, omnidirectional and / or a combination thereof It can be oriented. Thus, the micro-topographic surface structure of the metal-rubber interface can be directed. to provide mechanical adhesion against the relative movements occurring on its surface It is possible to restructure it. 10 Micro-topographic surface structure, metal surface - outer surface of the inner tube (12), inner of the middle tube surface (21), outer surface of the middle tube (22) and inner surface of the outer tube (31) - on a single It can consist of one type of micro-geometric structure, or different types of micro-geometric structures. They can also be formed by using them together. In addition, micro-geometric structures geometric properties and distribution on the surface, constant 15 within the same metal surface It can be held in place, and it can vary in different areas of the surface. It can be edited. Micro-topographic surface created on the inner surface (21) and outer surface (22) of the central tube structures, the position of the surfaces in question within the bastion (1) and the dynamics to which they are subjected It is structured taking into account the loading conditions. In particular, every 20 of the middle pipe (20) metal-rubber between the rubber parts on both sides (40, 50) and the middle tube (20) relative to dynamic loading in axial and torsional directions at interfaces Movement and sliding tendencies occur. Therefore, on the inner surface of the central tube... (21) and the micro-topographic surface structures on the outer surface (22), the said relative It is designed to increase mechanical grip against movements. 25 In this context, the micro- located on the inner surface (21) and outer surface (22) of the middle tube geometric structures, longitudinal, transverse, oblique, diagonal, circumferential, according to the axial direction. They are oriented radially, omnidirectionally, and / or a combination thereof. Micro- The orientation and distribution of geometric structures on the surface, their formation at the relevant interface. This is determined by considering the direction and magnitude of the expected relative motion. 30 In a preferred application, on the inner surface (21) and the outer surface (22) of the middle tube Micro-channel groups extending in at least two different directions that intersect each other are used. The subject is micro-channel groups, forming intersection regions on the surface. are arranged so that the rubber parts (40, 50) are in micro-channels and 9 a surface that allows for mechanical holding at intersection points The topography is being created. Micro-channel groups differ according to the axial direction. It is designed to be able to extend at various angles. 5 This type of surface topography includes cross, lattice, mesh, diamond pattern and / or They may have similar geometric appearances. However, within the scope of the invention... It is essential that the micro-topographic surface structure has a specific geometric appearance. not, but micro-channels, micro-grooves, micro-indentations arranged in different directions, Different combinations of micro-protrusions and / or other micro-geometric structures are also 10 It is available for use. Micro-topographic surface created on the inner surface (21) and outer surface (22) of the central tube its structure, rubber during dynamic loading in axial and / or torsional directions slippage occurring at the interface between sections (40, 50) and the middle pipe (20) It is designed to create resistance against abrasion movements. Thus, rubber 15 parts (40, 50) metal surface - inner surface (21) and outer surface (22) of the middle pipe - limiting the relative motion occurring along and the metal-rubber interface It is possible to increase its resistance under dynamic loads. However, the outer surface (12) of the inner tube (10) which is in contact with the 2nd rubber part (50) Micro-20 is also found on the inner surface (31) which is in contact with the 1st rubber part (40) of the outer tube (30). Topographic surface structures can be created. Micro- on these surfaces metal-rubber during dynamic loading, especially in the radial direction, on topographical structures. against the tendency of separation, opening and / or peeling that may occur at the interface It is designed to provide mechanical resistance. Micro-25 formed on the outer surface of the inner tube (12) and the inner surface of the outer tube (31) Topographic surface structures allow radial loads to act from different directions. Taking this into consideration, it can have a versatile surface topography. In this context, A cross-lattice, network formed by micro-channels extending in different directions and intersecting each other. baklava slice, diamond pattern and / or similar micro-geometric structures It is available. 30 These micro-topographic structures are on the metal surface - outer surface of the inner tube (12) and penetration of the rubber parts (40, 50) on the inner surface of the outer pipe (31) This allows it to create micro-scale indentations and / or protrusions. Thus the penetration of rubber material into the volumes formed by micro-geometric structures and It is possible to mechanically hold these structures in place after vulcanization. is happening. Rubber parts (40, 50) to metal surfaces - outer surface of inner tube (12), inner surface of middle tube 5 surface (21), outer surface of the middle pipe (22) and inner surface of the outer pipe (31) - connection, This is achieved using known rubber-metal bonding systems. In this context, to the metal surfaces in contact with the rubber parts (40, 50), -the outer part of the inner tube surface (12), inner surface of the middle tube (21), outer surface of the middle tube (22) and the inner surface of the outer tube surface (31)-to provide chemical bonding between metal and rubber one or 10 Further layers of adhesive can be applied. Adhesive-applied metal pipes. During the vulcanization of rubber material together with (10, 20, 30), metal, adhesive A chemical bond occurs between the rubber and the product. The micro-topographic surface structures of the rubber material during the vulcanization process penetrating into the indentations, gaps, channels and / or similar geometric areas it creates 15 This is ensured. After vulcanization, the elastomeric rubber material in question... by being positioned within micro-geometric structures, at the metal-rubber interface In addition to chemical bonding, mechanical adhesion and / or mechanical locking effect. is occurring. In the metal-rubber interface created in this way, micro-20 micro-fibers are formed through chemical bonding. The mechanical adhesion effect provided by the topographic surface structure works in conjunction with this. Chemical bonding provides the interface bonding between metal and rubber, while micro- Filling and gripping topographic structures with rubber material, intermediate Additional mechanical resistance is provided against relative movements that may occur on the surface. Thus, compared to a bond based solely on chemical bonding, dynamic loads are 25 It is possible to increase the strength of the interface connection underneath. The geometric characteristics of the micro-topographic surface structure of the relevant metal-rubber interface It can be differentiated according to the loading conditions to which it is exposed. In this context, micro- the orientation, size, depth, width, frequency, and relationships of geometric structures The distance and distribution on the surface can be changed. These properties are; 30 geometry of metal pipe (10, 20, 30), wall thickness of rubber parts (40, 50), elastomeric taking into account the properties of the material, the location of the relevant interface and the operating conditions of the bushing (1) This can be determined by taking these steps. 11 Similarly, within the scope of the invention, the same micro- The use of topographic surface structure is not mandatory. The outer surface of the inner pipe (12), middle inner surface of the pipe (21), outer surface of the middle pipe (22) and inner surface of the outer pipe (31) 5 on, the type of dynamic loading to which the relevant surface is subjected and the occurrence at the interface different micro-topographic surface structures depending on the expected relative movement It is available for use. In this context, axial and / or on the inner surface (21) and outer surface (22) of the middle pipe. 10 aimed at increasing mechanical grip against dynamic loadings in the torsional direction. While the first type of micro-topographic surface structure can be used, on the outer surface of the inner tube (12) and mechanical resistance to dynamic loads in the radial direction on the inner surface of the outer pipe (31). A second type of micro-topographic surface structure can be used to increase resistance. The first and second types of micro-topographic surface structures differ in their geometric characteristics. directions, distributions and / or positions of micro-geometric structures relative to each other 15 They may differ in this respect. The invention covers micro-topographic surface structures and metal-rubber interfaces. It can be applied to the entire surface, or to specific areas of the surface in question. micro-geometric structures can be created. The distribution of micro-geometric structures on the surface is fixed or It can be arranged to have varying densities. Thus, the interface has 20 different densities. The mechanical properties of the micro-topographic structure depend on the loading conditions occurring in these regions. It is possible to adapt the adhesion effect. Consequently, the invention includes the rubber parts (40, 50) of metal pipes (10, 20, 30) the outer surface of the inner tube (12), the inner surface of the middle tube (21), the outer surface of the middle tube in contact with Micro-topographic 25 created on the surfaces of the outer surface (22) and the inner surface of the outer pipe (31) Thanks to their surface structures, they provide an additional layer of chemical bonding at the metal-rubber interface. A mechanical adhesion mechanism is created. The relevant micro-topographic surface structure thanks to its configuration according to the dynamic loading conditions to which the interface is subjected, especially in three-tube vibration damping bushings with low rubber wall thickness, Slip, abrasion, separation and / or 30 that may occur under repeated dynamic loads reducing the tendency to open and thus the dynamic operation of the vibration damping bushing (1). Its durability can be improved. The scope of protection of the invention is specified in the claims attached hereto, and these details are strictly adhered to. The explanation cannot be limited to those given for illustrative purposes. Because a technically skilled person... 12 the person, without deviating from the main theme of the invention, in light of what has been described above, similar It is clear that these structures can emerge.

Claims

13 REQUESTS 1. The invention consists of a concentrically positioned metal inner tube (10), a metal middle pipe (20) and a metal outer pipe (30) and the said metal pipes (10, 20, 30) 5 elastomeric 1st rubber part (40) and 2nd rubber parts positioned between (1) is a vibration damping bushing containing (50) rubber parts (40, 50) contact with outer surface of the inner tube (12), inner surface of the middle tube (21), 10 outer surface of the middle tube (22) and inner surface of the outer pipe (31) rubber and metal on at least one of the metal surfaces in question composed of micro-geometric structures designed to increase mechanical adhesion between them It is characterized by the presence of a micro-topographic surface structure. 15 2. Vibration damping bushing (1) according to claim 1, its feature is; micro-topographic surface its structure, on the outer surface of the inner tube (12), on the inner surface of the middle tube (21), middle on the outer surface of the pipe (22) and on the inner surface of the outer pipe (31) This is characterized by its presence on all metal-rubber contact surfaces. is being done. 20 3. Vibration damping bushing (1) according to claim 1 or 2, its feature is; inside the middle tube micro-topographic located on the surface (21) and the outer surface of the central tube (22) surface structure, axial and / or torsional dynamic loadings towards, longitudinal, transverse, inclined, diagonal and / or with respect to the axial direction 25 It is characterized by...

4. Vibration damping bushing (1) according to claim 1 or 2, its characteristic is; the outer of the inner tube micro-topographic surface located on the surface (12) and the inner surface of the outer pipe (31) its structure, in relation to dynamic loadings in the radial direction, in different directions It is characterized by containing elongated micro-geometric structures. 30 5. Vibration damping bushing (1) according to claim 1 or 2, its feature is; micro-topographic surface structure, oriented micro-channels, micro-grooves, micro-indentations, micro-protrusions, micro-pits, micro-holes, micro-teeth, micro-pins and / or by containing micro-geometric structures formed from combinations of these It is characterized by 35 14 6. Vibration damping bushing (1) according to claim 5, its feature is; micro-topographic surface its structure consists of groups of micro-channels extending in at least two different directions that intersect each other. At least one of the following patterns is created: cross, lattice, network, diamond and / or rhombus pattern. It is characterized by having a surface topography.

7. Vibration damping bushing (1) according to claim 6, its feature is; intersecting micro- canal groups extending at different angles relative to the axial direction It is characterized by being organized.

8. Vibration damping bushing (1) according to claim 1 or 2, its characteristic is; micro-topographic 10 surface structure, rubber during vulcanization of rubber materials indentations, voids and / or formed by micro-geometric structures of the material and the micro- will allow mechanical locking within geometric structures It is characterized by being structured in this way. 15 9. Vibration damping bushing (1) according to claim 1 or 2, and its feature is; metal pipes at the metal-rubber interface between parts (10, 20, 30) and rubber parts (40, 50), The mechanical properties created by chemical bonding and the micro-topographic surface structure. It is characterized by the simultaneous presence of a locking effect.

10. Vibration damping bushing (1) according to claim 1 or 2, its characteristic is; micro-topographic 20 the geometry, orientation, depth, width, frequency, and relative positions of the surface structure and / or its distribution on the surface of the relevant metal pipe (10, 20, 30) geometry, thickness of rubber parts (40, 50), elastomeric rubber properties of the material and / or dynamic loading to which the bushing (1) is subjected It is characterized by being determined depending on the conditions. 25 11. Vibration damping bushing (1) according to claim 1 or 2, its feature is; micro-geometric by creating structures continuously and / or intermittently on a metal surface It is characterized by...

12. Vibration damping bushing (1) according to claim 1 or 2, its feature is; micro-geometric 30 structures on metal surfaces, regular, repetitive, irregular and / or variable. It is characterized by its spaced positioning.

13. Vibration damping bushing (1) according to claim 1 or 2, its feature is; inside the middle tube axial of micro-geometric structures located on the surface (21) and the outer surface (22) longitudinal, transverse, oblique, diagonal, circumferential, radial, multi-directional, depending on the direction. 35 characterized by being directed in the form of and / or a combination of these. is being done.

14. Vibration damping bushing (1) according to claim 1 or 2, its characteristic is; micro-topographic surface structure: linear, curvilinear, circular, elliptical, triangular, quadrilateral, hexagonal 5 micro-geometric structures with and / or similar geometric forms It is characterized by its creation.

15. Vibration damping bushing (1) according to claim 1 or 2, its characteristic is; the outer of the inner tube surface (12), inner surface of the middle tube (21), outer surface of the middle tube (22) and outer on the inner surface (31) of the pipe, the relevant metal-rubber contact surface is exposed 10 different micro-topographical features depending on the dominant dynamic loading type It is characterized by the presence of surface structures.

16. Vibration damping bushing (1) according to claim 15, its feature is; inside the middle tube axial and / or torsional direction on the surface (21) and outer surface (22) the first micro-topographic surface structure for dynamic loading, the inner pipe On the outer surface (12) and on the inner surface of the outer pipe (31), the dynamic 15 in the radial direction with the presence of a second micro-topographic surface structure for loadings It is characterized by... 25

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