Damping device, component with damping device and corresponding component connection, manufacturing method and connection method

Abstract

A damping device that can be fastened in an opening of a first component A and by which a damping connection of the first component to a second component can be achieved, in particular exclusively comprising: two identically constructed damping elements, wherein each damping element comprises: a head with a first outer diameter, a shaft portion with a second outer diameter smaller than the first outer diameter and extending from the underside of the head, and a central first through-hole, and only one sleeve having a central second through-hole, the only one sleeve being at least partially arranged in the central first through-hole of each damping element by friction and / or material connection, so that the two identically constructed damping elements are fastened to each other by means of only one sleeve in such a way that the undersides of their heads face each other, with the first component arranged between them.

Description

Technical Field

[0001] The invention relates to a damping device comprising two damping elements, in particular two damping elements of identical construction, each having a central first channel opening and only one sleeve; a first component of the damping device; a component connection by means of the damping device; a method for manufacturing the damping device and a connection method by means of the damping device. Background Art

[0002] Fastening devices with damping elements for fastening two components together, which, due to the damping element, have a damping effect, are generally known in the prior art. Such fastening devices are typically arranged in a component opening of a first component and fixed on both sides of the component opening. Connecting screws inserted through the fastening device are used to fasten the first component to the second component.

[0003] In order to fasten the fastening device in the component opening of the first component, two fastening devices of different configurations are usually used, each fastening device being arranged on a component side. Therefore, the fastening device comprises correspondingly interacting fixing elements, damping elements, sleeves, etc. on each component side.

[0004] For example, US 2012 / 0049425 A1 describes an assembly device for physically connecting a device or switchboard to an assembly structure. The assembly device provides shock and power isolation. The assembly device includes an inner section and an outer section mechanically connected by a flexible, shock-absorbing structure. The outer section of the assembly device is mechanically connected to a fastening structure via a removable connection. A device or panel is secured to the central portion of the assembly device via the fastening device.

[0005] US2017 / 0207615A1 relates to a cable guide assembly configured to support a media cable. The cable guide assembly includes a fastening feature / structure configured and dimensioned to be releasably mounted relative to a support structure.

[0006] A fastening device for fastening a decoupling device relative to the hole edge of the hole recess of a screening component is described in DE 102016106152A1. The decoupling device for the oscillation decoupling connection of a sleeve to a screening component has at least one bridging element, which includes a connecting device for fastening the bridging element to the hole edge of the screening component at its radial outer edge. The connecting device has at least four latches protruding radially outward from the bridging element. A subset of at least two latches of the bridging element is provided for abutting against a first outer side of the screening component, and the remaining number of at least two latches is provided for abutting against a second opposite outer side of the screening component. The hole edge with the latches of the subset and the remaining number of latches can be attached relative to the decoupling device by a clamping fit.

[0007] DE 602004002062T2 describes a vibration-proof heat shield that is secured to a vibration source so that it covers at least a portion of the heat source. Furthermore, a gap is formed relative to the surface of a reference heat source to reduce heat radiation from the heat source. The heat shield comprises a main body, a collar member, a gasket, and a connecting member.

[0008] US 2007 / 0026735 A1 describes a cable connector that both automatically seals and provides strain relief when a conductor is inserted. The cable connector includes a conductor passageway through a flexible housing that seals the conductor inserted through the passageway and a wall opening into which a plug is secured. A more rigid frame supports the housing and is provided with an attachment that allows the conductor to pass through the passageway but prevents any removal of the conductor from the passageway.

[0009] EP 2105617 A2 describes a two-part fastening device for surface elements, comprising a base element and a coupling element. The base element is constructed with two sides, a first side of which has a fastening surface, and a connecting pin protruding from its second side, which can be used to establish a snap-fit ​​connection with the coupling element. The coupling element is also constructed with two side surfaces, a first side of which has a fastening surface and a second side of which has a pin receiver for the connecting pin of the base element, while the coupling element has an opening in which the pin receiver is resiliently arranged.

[0010] US Pat. No. 5,537,714 A describes a sealing sleeve made of plastic material for use on metal studs in wall structures to protect wires, cables, conduits, and the like. The sealing sleeve comprises a cylindrical body with an enlarged flange at one end and a radially projecting spring clip on the exterior of the body, whereby the sealing sleeve can be inserted into a hole sized for the web, with the hole edge being captured between the locking clip and the flange. On the other side of the flange are radially opposed, axially projecting spring fingers. The flange also includes two diametrically opposed holes, with the fingers and holes positioned so that two sealing sleeves can be connected flange-to-flange by axial rotation relative to one another.

[0011] US Pat. No. 4,656,689 A also relates to a sealing sleeve for protecting a conduit passing through a wall opening and for providing an airtight seal between the conduit and a wall edge surrounding the wall opening. The sealing sleeve comprises a relatively rigid fastener portion having a projection extending therefrom and a locking mechanism at the end of the projection for engaging the edge of the wall surrounding the wall opening. A resilient sealing portion receives the projection and has an opening that is smaller than the outer dimensions of the conduit.

[0012] US Pat. No. 8,409,395 B2 describes a method for forming a through-hole through a composite structure having a plurality of internal compartments. An insert ring is attached to the composite structure to form a protective layer around the perimeter of the penetration formed in the composite structure. An adhesive is disposed between the composite structure and the insert ring to form a fluid-tight seal between the insert ring and the internal compartments.

[0013] Finally, DE 102017122236 A1 describes a fastening system for fastening a component to a load-bearing component. The fastening system includes a fastening stud that can be inserted through a through-hole in the component and fastened in the fastening hole of the load-bearing component, an outer sleeve, and an inner sleeve. The inner sleeve is axially movably stored in the through-hole of the outer sleeve, wherein the inner sleeve forms a through-hole for the fastening stud, and the fastening stud is axially movably stored in the through-hole. The fastening system also includes a spring washer that can be inserted into the outer sleeve, the spring washer being configured to attach to a first side of the component in a fastened state, and a second spring washer that can also be inserted into the outer sleeve and is configured to attach to a second side of the component, opposite the first side, in the fastened state.

[0014] Disadvantages of these known arrangements are the effort involved in assembly and production and the lack of damping effect both with respect to axial and radial vibrations / shocks.

[0015] US 2006 / 244188 describes a vehicle body mounting assembly having a first retainer and a second retainer defining a core structure with a replaceable elastomer thereon. A mounting plate is disposed between the elastomers for securing the assembly to the vehicle frame. A retaining clip helps retain the assembly in the frame when the fastener is tightened to the frame.

[0016] DE 19916098 A1 describes another device for connecting two components. The device comprises a two-part elastic decoupling element, which passes through a receiving hole upstream of the component and receives the component between its component parts; and a connecting device that passes through the decoupling element and can be fastened in the other component to clamp the decoupling element to the other component.

[0017] US Pat. No. 4,530,491 A describes a damping device. Here, axial loads and motions on a uniform elastomeric body of a retainer cause compression and deflection of a first annular portion of the body in both directions, as well as shear deflection of a second tubular portion of the body. This second portion also imparts lateral stability to the retainer.

[0018] US Pat. No. 4,883,319 A describes a bushing assembly for use in a hinge for a vehicle seat device. The bushing assembly includes a pair of identical locking sleeves, each having a pair of opposing tangs extending axially from an annular portion. Each tang portion has a radially outwardly directed, deflectable shoulder. The shoulder at the tang portion engages a corresponding recessed flange on the inner wall of the annular portion of the opposing sleeve, snap-fitting together to form a unitary bushing assembly through which a hinge pin extends.

[0019] US 2010 / 0086377 A1 describes a vibration isolation fastener insert structure configured to be partially or completely snugly received within a plate aperture. The fastener insert structure includes a rigid cylindrical hub having an externally extending flange and a continuous longitudinal opening adapted to receive a fastening element, and an elastomeric bushing snugly carried or formed about the hub and having a groove therein for receiving the external flange. Furthermore, the structure includes an upper housing and a lower housing.

[0020] CN 111140612A discloses an impact damper comprising a connecting plate, a connecting post, a first vibration damping device, and a second vibration damping device. The first vibration damping device comprises a first sleeve and a first vibration damping component covering the first sleeve. The second vibration damping device comprises a second sleeve and a second vibration damping component covering the second sleeve. The connecting post passes through the first sleeve, the second sleeve, and the connecting plate in sequence.

[0021] DE 102019107885 A1 describes a shock absorber. The shock absorber comprises an absorber mass having an opening and at least two spring devices inserted into the opening. Each spring device comprises at least one elastic spring element and a carrier, wherein the carrier receives the spring element. The carrier body includes an insertion portion for inserting the carrier body and spring element into the opening. The insertion portion is arranged at an angle relative to the longitudinal axis of the shock absorber.

[0022] EP 2980437A1 describes a vibration-damping fastening system comprising a threaded bolt with a bolt head, a housing with a hole for form-fitting fastening of the threaded bolt, a flange with an outlet coaxial with the hole for the threaded bolt, and an elastic element between the flange and the housing and / or between the threaded bolt with the bolt head and the flange. The elastic element comprises the entire metal pillow.

[0023] JP 2014-095441A1 proposes a vibration control bushing comprising an inner cylindrical portion formed of metal into which the post of a screw is inserted, an outer cylindrical portion formed of rubber and fastened to the outer circumference of the inner cylindrical portion, and a flat washer portion fastened to the surface of the outer cylindrical portion opposite the head of the screw. A cutout portion for inserting a retainer is circumferentially provided on the outer circumference of the outer cylindrical portion. When the screw is tightened, the outer cylindrical portion is pressed together, with the screw head and adapter located between the flat washer portion, and the side surface of the cutout portion contacts both surfaces.

[0024] Finally, EP 1 054 386 A2 discloses a method for fixing a floating vibration washer with a sleeve to an insulation board having an insertion hole for a fastening screw. The method comprises providing a metal damping element at the inner side and peripheral edge portion of the insertion hole for the fastening screw, inserting a male sleeve or a female sleeve of a male flat washer into the female flat washer, respectively, accessing the bolt insertion hole from both sides of the insulation board using fastening portions provided on the male sleeve and / or the female sleeve, and attaching and fastening the male and female washers to each other, so that the insulation board is kept in a non-contact state with both the male and female washers.

[0025] These fastening devices with a damping effect all have the same high assembly and manufacturing effort.

[0026] Therefore, based on these known fastening devices or damping devices, respectively, having a damping effect, the object of the present invention is to provide an improved damping device, which is intended to be fastened without tools and to be used with different material thicknesses. Another object of the present invention is to provide a method for easily manufacturing such a damping device. Summary of the Invention

[0027] The above-mentioned objects are achieved by the damping device according to the present invention, the first component according to the present invention having the aforementioned damping device, the component connection according to the present invention, the method for producing the damping device according to the present invention, and the connection method according to the present invention. Advantageous embodiments and further developments are derived from the following description and the accompanying drawings.

[0028] The damping device according to the invention can be fastened in an opening of a first component. Furthermore, a damping connection of a first component to a second component can be achieved with the damping device according to the invention. In a first alternative, the damping device according to the invention comprises, in particular, exclusively two identically constructed damping elements, wherein each damping element comprises: a head with a first outer diameter, a shaft with a second outer diameter and a central first through-hole, the shaft being smaller than the first outer diameter of the head and extending from the bottom side of the head, and a single sleeve having a central second through-hole, the single sleeve being at least partially arranged in the central first through-hole of each damping element by friction and / or adhesive / material / substance-to-substance connection, so that two identically constructed damping elements with mutually facing bottom sides of the head can be fixed to one another by means of the single sleeve.

[0029] In the following, for a better understanding of the present invention, the application of the damping device of the present invention is explained. In this article, the main feature of this alternative is that the damping device includes two damping elements of identical construction and only one sleeve. Therefore, the damping device includes three components. The connection between the two damping elements is achieved by retaining only one sleeve in the central first through hole of each sealing element by friction connection and / or material connection. Therefore, no locking structure is provided for fastening the damping element in the opening of the first component or for fastening the damping elements to each other. In a preferred embodiment, the damping element is configured to be circular or elliptical. In this article, an elliptical design is particularly preferred in order to achieve different damping in different directions.

[0030] For spatial orientation, the longitudinal axis of the damping device is defined by the central first through-holes of the two identical damping elements. In other words, the insertion direction of the connecting element (e.g., a connecting screw or bolt) is along the longitudinal axis of the damping device through the central first through-holes of the two identical damping elements and the central second through-hole of the only one sleeve.

[0031] In use, two identical damping elements are first provided and are intended to be secured in an opening in a first component, such as an opening in a mounting flange of a vibration-generating pump or the like. Alternatively, the first component may also be a cable or wire channel for securing to a vehicle body as an exemplary second component. An exemplary component thickness of the first component in the opening is between 1 mm and 3 mm.

[0032] In a first step, one of the two damping elements is provided with a single sleeve at least partially arranged in a central first opening. To this end, the single sleeve is inserted into the central first through-hole, in particular from the end of the shaft portion facing away from the head, so that the single sleeve is only partially arranged in the central first through-hole. Due to the frictional and / or material-fitting arrangement of the single sleeve in the central first through-hole, the sleeve is loss-proofly secured there. The remaining, and therefore uninserted, portion of the single sleeve protrudes from the shaft portion of the first damping element.

[0033] The first damping element, prepared in this manner, having a single sleeve extending over the shaft portion, is now arranged in the opening of the first component. In this context, the opening in the first component is sized such that at least a portion of the shaft portion extends into the opening in the first component. Furthermore, the outer diameter of the head portion is selected to be sufficiently large so that the damping element abuts the first component adjacent to the first opening. The abutment surface or abutment edge formed in this manner defines an abutment plane on the first component that is aligned orthogonally to the longitudinal axis of the damping device. In one configuration, the abutment surface or abutment edge is continuous. In an alternative configuration, the abutment surface or abutment edge is partially formed, for example, with a through-hole or similar structure. Since the shaft portion is preferably cylindrical or elliptical on its outer side, in particular without any locking features, and preferably not provided in a press fit within the component opening, the damping element disposed in the component opening is not securely disposed therein. More specifically, the first damping element, having a single sleeve, is preferably arranged loosely in the component opening of the first component.

[0034] In order to limit the insertion of the corresponding damping element into the opening of the first component, that is, to achieve a defined insertion depth, a radially outwardly projecting projection can be provided on the outer side of the shaft portion. This projection can be continuous or discontinuous. Alternatively, this function can also be achieved by providing two or more radially outwardly projecting projections, which, at the component surface, provide a further abutment surface in the shaft portion in addition to the abutment surface or abutment edge of the head.

[0035] After the first damping element, one of the two identically constructed damping elements, having a shaft extending into an opening in the first component, is positioned on the first component side, the other damping element is similarly positioned on the opposite second component side to secure the first damping element. Since the two damping elements are identically constructed and inserted into the component opening of the first component with their sides facing each other or with the ends of their shafts facing away from the head, the free end of the single sleeve, which extends over the shaft of the first damping element, is now secured in the central first through-hole of the second damping element via a frictional and / or material connection. The resulting damping device is thus securely fixed in the opening of the first component. In this state, the sides of the shafts of the two damping elements facing away from the head preferably abut each other. To this end, the ends of the shafts of each damping element facing away from the head are preferably flat. This configuration will become more apparent later, particularly with reference to the preferred embodiments.

[0036] After the pre-assembly of the fastening device in this manner, the second component is provided. This takes place at the same production location or at another production location, depending on the desired course of the method. This will also be explained in detail later.

[0037] The opening of the second component is aligned with the central first through-hole of the damping element and the central second through-hole of the only sleeve. Thereafter, a connecting element (e.g. a connecting screw or bolt) is passed through the central first through-hole and fastened in a fastening portion arranged in or adjacent to the second component. When doing so, the fastening is preferably performed so that the compression of the corresponding damping element provides a damping effect for both axial vibrations and radial vibrations. To this end, the only sleeve preferably has an axial length that is greater than the axial length of the damping element but less than the axial length of both damping elements. In this case, the material selection for the damping element must be achieved so that, on the one hand, it provides a sufficient damping effect while, on the other hand, simultaneously ensuring the necessary connection stability. For this purpose, elastomers or thermoplastic elastomers are particularly suitable.

[0038] The advantage of this method is that the manufacturing effort is reduced due to the low number of components and the use of identically constructed damping elements. Furthermore, workers do not have to ensure the correct distribution of the damping elements during assembly. This also reduces the risk of incorrect assembly. Furthermore, automated assembly is facilitated because only the single sleeve, which is preferably preassembled in the damping element, must be inserted into the second damping element, which does not have a sleeve.

[0039] The use of only one sleeve provides a further advantage, namely that the material selection of the damping element can be adapted to the damping effect, since the stability of the damping device reduced in this way can be compensated by the stabilizing effect of the single sleeve. The single sleeve is preferably formed from metal or thermoplastic material.

[0040] In a second alternative, a damping device according to the present invention, which can be fixed in an opening in a first component and by which a damping connection between the first component and a second component is achieved, comprises, in particular, exclusively two damping elements, each of which comprises a head portion, a shaft portion, and a central first through-hole, the head portion having a first outer diameter, the shaft portion having a second outer diameter smaller than the first outer diameter and extending from the bottom side of the head portion, and a single sleeve having a central second through-hole, the single sleeve being at least partially disposed in the central first through-hole of each damping element by friction and / or an adhesive / material / substance-to-substance connection, such that the two damping elements can be fastened to each other via the single sleeve, wherein the bottom sides of the two damping elements with their heads face each other, with the first component positioned therebetween. Unlike the first alternative of the damping device according to the present invention, the two damping elements do not need to have identical construction. This increases the variability of the damping device with respect to its possible applications. However, within the framework of this alternative, it is also preferred that the two second axial ends of the two damping elements, which face each other, abut against each other in the assembled state, but do not have any locking features. This also means that, in this alternative, the anti-loosening fastening of the two damping elements in the component opening of the first component is primarily, preferably exclusively, achieved via this single sleeve. With regard to its application, the aforementioned embodiments of the first alternative of the damping device according to the present invention thus apply analogously.

[0041] In a preferred embodiment of the damping device, the central first through hole comprises a radially inwardly projecting protrusion adjacent to an upper side of the head.

[0042] In a first alternative, a radially inwardly projecting projection is used to form a particularly localized axial abutment surface or abutment edge for the single sleeve. This ensures that the single sleeve can be inserted into the central first through hole until it reaches a defined position. In this embodiment, the axial length of the single sleeve preferably corresponds to twice the length between the end of the shaft portion facing away from the head and the portion of the central first through hole where the inner diameter is reduced. For a circular central first through hole, it therefore includes an inner diameter adjacent to the upper side of the head that is smaller than the outer diameter of the single sleeve. This reduction in the inner diameter adjacent to the upper side of the head can be achieved, for example, by a step, a chamfer, or a combination of the two. The corresponding projections can be arranged continuously or discontinuously. Alternatively, for a non-circular sleeve correspondingly configured as a non-circular central first through hole, the corresponding abutment surface or abutment edge can be formed by a projection radially inwardly relative to the longitudinal axis of the damping element. In this case, the abutment surface or abutment edge can also be provided by a step, a chamfer, or a combination of the two. Providing a chamfer to provide an abutment surface or edge for the only sleeve has the advantage that later in use, in compression, shearing of the damping element material by the only sleeve is avoided, and the performance of the damping element is improved.

[0043] In a second alternative, radially inwardly projecting projections serve as additional securing features, particularly in conjunction with the only sleeve having a circumferential flange adjacent to the axial end of the only sleeve. This will be made clear in the discussion of the corresponding detailed embodiments below.

[0044] It is also preferred that each damping element includes, in the radially outer head portion, a protrusion extending parallel to the shaft portion. This protrusion serves as an abutment surface on the upper side of the component adjacent to the opening of the first component. In order to increase the stability of the damping element head portion, in the framework of this embodiment, it is particularly preferred that a plurality of ribs are provided on the bottom side of the head portion between the shaft portion and the protrusion. Similarly, it is preferred that a plurality of first and / or second through-holes, preferably circular through-holes, are provided in the head portion of the damping element. Here, the plurality of first through-holes are preferably arranged in an annular manner in the outer portion of the head portion, while the plurality of second through-holes are preferably arranged in the radially inner portion of the head portion, i.e. adjacent to the central first through-hole. The second through-holes therefore preferably also extend through the shaft portion to the second axial end of the damping element. Providing through-holes also offers the same advantages as providing ribs, namely, increased stability of the damping element.

[0045] In another preferred embodiment of the damping device, each damping element includes a plurality of radially inwardly projecting projections within a central first through-hole, which provide a frictional connection to the single sleeve. Thus, the single sleeve is arranged in the central first through-hole of the respective damping element by a press fit. In this assembly, the single sleeve can first be securely mounted / fixed in the first of the two damping elements. The first or prepared damping element, with the single sleeve securely secured therein, is inserted into the opening in the first component on the side having the projections of the single sleeve and a portion of the shaft. When the remaining second damping element is inserted into the opening of the first component from the opposite side of the component, it is also securely mounted / fixed to the single sleeve. This facilitates handling of the individual damping devices and particularly supports automated processing.

[0046] Advantageously, each damping element has a Shore A hardness of between 40 and 80. This preferred embodiment allows the damping elements to have damping properties that are adapted to the respective field of application.

[0047] According to another embodiment, the single sleeve has a plurality of through-holes according to the first alternative, through which the material of the damping element protrudes radially inwards. This construction is particularly suitable when manufacturing the damping element by injection molding, so that a first damping element can be manufactured with a sleeve arranged therein in a non-loosening manner. In this way, when manufacturing one of the two damping elements in the corresponding damping element in a non-loosening manner, the single sleeve can also be fixed particularly effectively, so that the separate step of inserting the single sleeve into one of the two damping elements can be omitted. In the remaining second damping element, the single sleeve can be fixed by a press fit in the above-mentioned manner. Therefore, in use, the single sleeve is inserted into the second damping element in the usual way and is fixed in the second damping element by a friction connection and / or a material connection.

[0048] According to a second alternative, the single sleeve has a peripheral or circumferential flange or ring adjacent to the single axial end of the sleeve. The advantages of this design emerge particularly during subsequent use. Thus, due to the flange of the single sleeve, no separate washer is required between the head of the connecting element and the damping element. This further facilitates establishing the connection between the two components.

[0049] The first component of the present invention includes a damping device according to the present invention arranged in a component opening of the first component. The first component is, for example, a pump, such as a vacuum pump, with the damping device preassembled in the opening of the assembly flange. As an alternative to a pump, the first component can also be a cable or cable duct or similar component, which is to be secured to, for example, a vehicle body as a second component via the damping storage device. The material thickness of the first component adjacent to the component opening is preferably between 1 mm and 3 mm. With regard to the resulting technical effects and advantages, reference is made to the above description of the damping device according to the present invention to avoid repetition.

[0050] The component connection according to the invention comprises a first component according to the invention and a second component having a second opening and a connecting element, wherein the connecting element extends through the damping device and engages with an assembly fastening portion in or near the second component. The assembly shows that with the damping device according to the invention, a releasable fastening, for example a threaded connection, can be achieved, wherein in a particularly preferred embodiment, in particular, only one sleeve of the damping device abuts the two components in the firmly connected state of the two components, thereby enabling block screwing. It follows that the length or axial extension of the only one sleeve in the longitudinal direction of the damping device is preferably smaller than the axial extension of the two damping elements in the longitudinal direction of the damping device. With regard to the component connection according to the invention, reference is also made to the above explanations regarding the damping device according to the invention.

[0051] In a preferred embodiment of the component connection, radial tolerance compensation during the establishment of the component connection can be achieved by the fact that the only one sleeve has an inner diameter greater than the outer diameter of the connecting element. This facilitates the fastening of the two components to each other, particularly by a worker or automatically.

[0052] Finally, in an equally preferred embodiment of the component connection, the connecting element comprises a head and a shaft, and a washer is disposed between the head of the connecting element and the adjacently arranged damping element of the damping device, wherein the outer diameter of the washer is greater than the inner diameter of the opening in the first component. This improves the fastening strength not only for the damping device but also for the first component. Furthermore, a washer dimensioned in this manner prevents the first component from completely releasing from the second component in the event of a failure of the damping device.

[0053] The manufacturing method according to the present invention for the damping device of the present invention comprises the following steps: providing two preferably identically constructed damping elements, providing only one sleeve, first placing the only sleeve in one of the two preferably identically constructed damping elements, and then placing the only sleeve in the remaining damping element, such that the two preferably identically constructed damping elements can be fastened to one another via the only sleeve, wherein a first component is arranged between the two preferably identically constructed damping elements. Based on the above steps, it can be appreciated that the damping device of the present invention is provided by the manufacturing method of the present invention. To avoid repetition, reference is made to the explanation regarding the damping device of the present invention.

[0054] In a preferred embodiment of the manufacturing method, the sleeve is made of metal or thermoplastic. In particular, the sleeve is made of an electrically conductive material, particularly preferably an electrically conductive thermoplastic with or without fiber reinforcement. By selecting the appropriate material, the damping device can be adapted to the desired application.

[0055] In another preferred embodiment of the manufacturing method, one of the two preferably identical damping elements is provided by overmolding a single sleeve with a damping element material having a Shore A hardness between 40 and 80. This method overmoldes the single sleeve during injection molding of the damping element. Alternatively, it is preferred that the damping element be manufactured by vulcanization or extrusion rather than injection molding. It is particularly advantageous in this context if the single sleeve includes a plurality of through-holes. This allows, as explained above, particularly secure attachment of the single sleeve to one of the two damping elements.

[0056] The method for connecting a first component to a second component of the present invention comprises the following steps: providing a first component having a damping device disposed therein, particularly the first component of the present invention, or providing a first component and a damping device of the present invention, and disposing the damping device of the present invention in an opening of the first component; thereafter, aligning a second component having an opening therein with the first component opening, and inserting a connecting element therein so that the connecting element engages with an assembly fastening portion in or adjacent to the second component. Thus, the component connection of the present invention can be established using the connection method of the present invention. Reference is therefore made to the above explanation regarding the resulting technical effects and advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In this regard, the same reference numerals in the accompanying drawings represent the same parts and / or elements. It shows:

[0058] Figure 1 shows a perspective view of the first damping element from above,

[0059] Figure 2 Shown from below Figure 1 A three-dimensional diagram of the damping element,

[0060] Figure 3 Shown Figure 1 Top view of the damping element,

[0061] Figure 4 Shown Figure 1 Side view of the damping element,

[0062] Figure 5 Shown from below Figure 1 View of the damping element,

[0063] Figure 6 shows a sectional view of a first embodiment of a first damping element,

[0064] Figure 7 shows a sectional view of a second embodiment of a first damping element,

[0065] Figure 8 Shown Figure 1 A three-dimensional diagram of the damping element and the sleeve,

[0066] Figure 9 Shown is a sleeve inserted therein Figure 1 Cross-sectional view of the damping element,

[0067] Figure 10 A first embodiment of a damping device according to the present invention is shown,

[0068] Figure 11 Shown is a diagram having a structure arranged therein according to Figure 10 A sectional view of an embodiment of a first component of the damping device,

[0069] Figure 12 A cross-sectional view showing an embodiment of the connection of components according to the present invention,

[0070] Figure 13 Shown Figure 1 A perspective view of the damping element and an optional sleeve,

[0071] Figure 14 shows a perspective view of the second damping element,

[0072] Figure 15 Shown according to Figure 14 A top view of the second damping element,

[0073] Figure 16 Shown Figure 14 A three-dimensional diagram of the damping element and the sleeve,

[0074] Figure 17 Shown is a sleeve inserted therein Figure 14 Cross-sectional view of the damping element,

[0075] Figure 18 A second embodiment of the damping device according to the present invention is shown,

[0076] Figure 19 It shows that there is Figure 18 A sectional view of an embodiment of a first component of the damping device,

[0077] Figure 20 shows a perspective view of the third damping element,

[0078] Figure 21 Shown according to Figure 20 A top view of the third damping element,

[0079] Figure 22 Shown Figure 20 A three-dimensional diagram of the damping element and the sleeve,

[0080] Figure 23 Shown Figure 20 A cross-sectional view of a damping element with a sleeve inserted therein,

[0081] Figure 24 A third embodiment of the damping device according to the present invention is shown,

[0082] Figure 25 It shows that there is Figure 24 A sectional view of an embodiment of a first component of the damping device,

[0083] Figure 26 shows a perspective view of the fourth damping element,

[0084] Figure 27 Shown according to Figure 26 A top view of the fourth damping element,

[0085] Figure 28 Shown Figure 26 A three-dimensional diagram of the damping element and the sleeve,

[0086] Figure 29 Shown Figure 26 A cross-sectional view of a damping element with a sleeve inserted therein,

[0087] Figure 30 A fourth embodiment of a damping device according to the present invention is shown,

[0088] Figure 31 It shows that there is Figure 30 A sectional view of an embodiment of a first component of the damping device,

[0089] Figure 32 A flow chart showing an embodiment of a method for manufacturing a damping device according to the present invention, and

[0090] Figure 33 A flow chart showing an embodiment of a connection method according to the present invention is shown. DETAILED DESCRIPTION

[0091] An embodiment of the damping device 1 of the present invention comprises two identically constructed damping elements 10 and only one sleeve 50. Preferably, no additional parts or elements are required to fix the damping device 1 in the opening of the first component A. For a better understanding, first refer to Figures 1 to 7 One embodiment of the damping element 10 is explained.

[0092] The damping element 10 is preferably configured in a disk-like manner and comprises a disk having an inner diameter D I The central first through hole 12, the head 14 and the shaft 30. In a known manner, the head 14 comprises an upper side and a bottom side and has an outer diameter D AK (See Figure 3 ). With an outer diameter D AS The shaft portion 30 extends from the bottom side of the head 14, and for this purpose the shaft portion 30 has an end facing the head and an end facing away from the head. Thus, the first axial end of the damping element 10 is defined by the upper side of the head, and the second axial end of the damping element 10 is defined by the end of the shaft portion 30 facing away from the head. Figure 4 As shown, the axial height H of the damping element is measured between the upper side of the head 14 adjacent to the central first through hole 12 and the second axial end. D In particular, the second axial end can comprise a chamfer on the radially outer side. This facilitates the insertion of the damping element 10 into the component opening of the first component.

[0093] The upper side of the head 14 is configured as a plane adjacent to the through-hole 12. In a further radially outward course, the head 14 is configured in an inclined manner in the direction of the shaft portion 30. At the end of this inclined portion, there is a projection 16, which extends from the upper side in the direction of the end of the shaft portion 30 facing away from the head, parallel to the longitudinal axis of the damping element 10 or the shaft portion 30, respectively. As can be seen later, in particular the bottom side of this projection 16 serves as an abutment surface at the first component A, abutting the opening in the first component A. In addition, ribs 18 are provided on the bottom side of the head 14 for reinforcing the head 14 and thus the damping element 10. In the present embodiment, six ribs 18 are provided, which are evenly spaced apart from each other, as shown in FIG. Figure 2 To better understand the structure, Figure 6 and 7 A cross-sectional view of the damping element 10 is shown, wherein Figure 6 The cross section in FIG passes through rib 18, not Figure 7 The cross section in .

[0094] As described above, the shaft portion 30 extends from the bottom side of the head 14. Figure 7 As shown, the shaft portion 30 has a cylindrical shape on the outside, which may include steps. These steps facilitate the insertion of the damping element 10 into the opening of the first component A and prevent notch effects during contact between the first component A and the damping element 10. Furthermore, the steps provide abutment surfaces 34 that, in use, abut against component surfaces other than the underside of the protrusion 16 in the head. Consequently, the insertion depth of the damping element 10 into the component opening is defined and limited in this manner.

[0095] In the embodiment shown, the central first through hole 12 comprises projections 32 present at least in the shaft portion 30. The inner diameter D of the central first through hole 12 is achieved by these projections 32. I The damping element 10 comprises an upper side adjacent to the head 14 and having a reduced inner diameter D IV In the case where the central first through hole 12 is configured as a circle, it has a reduced inner diameter D IV The portion 20 may be provided by a step, a chamfer or a combination of both. Figure 6 In the embodiment, the portion 20 with reduced inner diameter is provided by a step connected to a chamfer. The step thus formed serves as a special local axial abutment surface or abutment edge for the only sleeve 50, so that the only sleeve 50 can be arranged at a defined depth in the damping element 10. Figure 7 In the embodiment, the inner diameter D is reduced IV The portion 20 is provided by a chamfer. This has the further advantage that, in the event of compression of the damping element 10, the risk of shearing of this portion of the damping element 10 is reduced by means of only one sleeve 50. In this context, it should generally be understood that, in addition to the full circumferential configuration of the portion 20, the same effect can also be achieved by discontinuous projections, etc., as long as a limitation of the insertion depth of only one sleeve 50 is provided.

[0096] Based on the outer diameter D of the head AK, which is larger than the diameter of the opening in the first component A, thus ensuring that the corresponding damping element 10 is not fitted through the opening in the first component A but rather abuts the edge portion of the opening when the damping element 10 is used. Thus, in use, the bottom side of the head 14 is arranged adjacent to the first component A. In the subsequent connection of the components, the opposite upper side of the head 14 is arranged adjacent to a connecting element, such as a connecting screw 3 or an associated washer 5. In this state, the shaft portion 30 (whose outer diameter D AS The damping element 10 preferably corresponds to the diameter of the opening in the first component A) at least partially extends into the opening in the first component A and adjoins with its second axial end the second axial end of the second damping element 10 arranged on the side opposite the component.

[0097] To provide the desired damping function via damping element 10, damping element 10 is preferably made of an elastomer or thermoplastic elastomer with a Shore A hardness between 40 and 80 Shore A. By selecting the appropriate material, damping element 10, and therefore damping device 1 as a whole, can be adapted to the desired application. Possible applications lie in the temperature range between -40°C and 200°C.

[0098] Reference Figure 8 and 9 , the damping element 10 is now shown connected to this only one sleeve 50. In use, this only one sleeve 50 is at least partially arranged in the central first through-hole 12 of the damping element 10. As mentioned above, the arrangement of the sleeve 50 in the central first through-hole 12 is achieved by a friction connection and / or a material connection.

[0099] Furthermore, the axial extension or height of the sleeve 50 in the longitudinal direction of the damping element 10 is greater than the axial height H of the damping element 10 . D However, in order to maintain the damping characteristics, the axial height of the only sleeve 50 is smaller than the axial height H of the damping element 10. D When the portion 20 with reduced inner diameter is present, the axial height of the sleeve 50 is preferably equal to twice the distance between the step formed by the portion 20 with reduced inner diameter and the second axial end of the damping element 10. In this way, during subsequent block tightening, compression of the damping element 10 in the longitudinal direction of the damping device 1 can be achieved, wherein the only sleeve 50 abuts the second component B on the one hand and the connecting screw 3 or the associated washer 5 on the other hand, respectively.

[0100] Metal or thermoplastic is used as the material for the sleeve 50. Preferably, the material is an electrically conductive material, for example a thermoplastic material having conductive properties and with or without fiber reinforcement. As in the subsequent application, this single sleeve 50 abuts, on the one hand, the second component and, on the other hand, a fastening element such as a connecting screw or a corresponding washer 5. The material is chosen so that the sleeve 50 can withstand the forces generated and transmit them.

[0101] Figure 10 An embodiment of a damping device 1 according to the present invention is shown, comprising two identically constructed damping elements 10 and a single sleeve 50. Secure assembly of the damping device 1 in the component opening of the first component A is achieved by the single sleeve 50, which is at least partially disposed within the shaft portion 30 of each damping element 10. This is achieved by providing radially inwardly projecting projections 32 in the central first through-hole 12, particularly in the shaft portion 30. This ensures that the damping element 10 and sleeve 50 components of the damping device 1 are securely fixed to one another. Furthermore, pre-assembling the sleeve 50 in the damping element 10 before arranging it in the opening of the first component A facilitates further processing steps and allows for automated handling of the damping device 1.

[0102] Reference Figure 11 and 12 , the process for producing a component connection with the aid of a damping device 1 is explained. To this end, first of all, two damping elements 10 of identical construction are provided, which are intended to be fixed in openings of a first component A, for example in a mounting flange or a cable / cable channel of an oscillation-generating pump. The material thickness of the adjacent component opening of the first component is preferably between 1 mm and 3 mm. In a first step, the only sleeve 50 is arranged in one of the two damping elements 10, with the proviso that none of the damping elements 10 already comprises the only sleeve 50. Thereafter, the damping element 10 prepared in this way is arranged near the opening of the first component A, with the only sleeve 50 partially arranged therein. The outer diameter D of the shaft portion of the damping element 10 AS The dimensions relative to the opening in the component A are such that the shaft section 30 of the damping element 10 extends into the opening in the first component A here.

[0103] The outer diameter D of the damping element 10 in the head AK This is in turn chosen such that adjacent the first opening the damping element 10 abuts the first component A. The abutment surface configured in this way defines an abutment plane at the first component A which is orthogonal with respect to the longitudinal axis of the damping device 1 .

[0104] Once one of two identical damping elements 10, each having a shaft portion 30 extending into an opening in the first component A, is arranged on the first component side, the other of the two identical damping elements 10 is similarly arranged on the opposite second component side. The two damping elements 10 are constructed to have identical configurations and, preferably after inserting the second damping element 10 onto the single sleeve 50, are brought into abutment with the shaft portions 30 facing each other. This means that they preferably abut with the axial ends facing each other and facing away from the head portion. The first component A is arranged between the two damping elements 10, particularly between the two heads 14.

[0105] The advantage of this method is that, since two identically constructed damping elements 10 are used, the manufacturing effort required to connect the components is reduced. Furthermore, during assembly, workers do not have to ensure the correct placement of the damping elements 10, particularly when the single sleeve 50 is not preassembled in a damping element 10. This reduces the risk of defective assembly. Furthermore, automated assembly is possible. Ultimately, the two damping elements 10 are secured to each other solely via the single sleeve 50, with the first component A positioned between them. In this state, the first component A, with the preassembled damping device 1, is located within the component opening of the first component A.

[0106] After the preassembly of the damping device 1 in this manner, the second component B is provided. This takes place at the same production location or at another production location, depending on the desired process flow.

[0107] The opening of the second component B is aligned with the central first through-hole 12 of the damping element 10. The connecting screw 3, serving as a connecting element, is then guided through the central first through-hole 12 and engages with the fastening portion 7 for the connecting screw 3, wherein the fastening portion 7 comprises, for example, an internal thread and is provided in or adjacent to the second component B. Radial tolerance compensation is achieved by the fact that, even in the portion 20 with reduced inner diameter, the inner diameter of the single sleeve 50 is greater than the outer diameter of the connecting screw 3. This facilitates the fastening of the two components A and B to each other, particularly by a worker or automatically.

[0108] The exemplary threaded connection is configured so that, in the initial state, the single sleeve 50 abuts the axial undercut in the central first through-hole 12. In this case, when the connecting screw 3 is tightened in the second component, the compression of the corresponding damping element 10 provides a damping effect for both axial and radial oscillations or vibrations. This configuration clearly illustrates that, with the damping device 1, a releasable threaded connection can be achieved, wherein, in the tightly connected state of the two components A, B, in particular, the single sleeve 50 abuts the second component on the one hand and the connecting screw 3 or the associated washer 5 on the other hand, respectively, thereby achieving a tight tightening. In particular, it has proven advantageous to use a washer 5 with an outer diameter that is larger than the outer diameter of the opening in the first component A. This ensures that, even in the event of a failure of the damping device 1, the first component A cannot release itself from the second component B. Furthermore, the forces exerted on the damping device 1 by tightening are more evenly distributed.

[0109] like Figure 13 As shown, in an alternative embodiment, the sleeve 150 can be configured with a plurality of through-holes 152, through which the material of the damping element 10 extends radially inward. In this way, the sleeve 150 can be arranged in the damping element 10 in a manner that prevents it from loosening. In addition, this further facilitates the manufacturing method of the damping device, which will become clear when considering the subsequent manufacturing method.

[0110] Figures 14 to 19 A second embodiment of a damping device 100 is described. In a damping element 110, a plurality of first through-holes 122 and second through-holes 124 are provided in the head portion of the damping element 110, rather than the ribs 18 of the damping element 10. Each of the first through-holes 122 and second through-holes 124 is circular. In a further embodiment, the damping element 110 corresponds to the damping element 10. Thus, the damping element 110 includes a central first through-hole 112 and a head portion 114 having a protrusion 116. A portion 120 having a reduced diameter is formed adjacent to the upper side of the head portion 114.

[0111] A plurality of first through holes 122 are annularly arranged in the exterior of the head 114. In the same manner, a plurality of second through holes 124 are arranged radially inwardly of the head 114, ie adjacent to the central first through hole 112. Figure 18 As can be seen in particular, the second through-hole 124 also extends through the shaft portion 30 to the second axial end of the damping element 110. The provision of the through-hole 122 and the through-hole 124 also offers the advantage that the stability of the damping element 110 is increased.

[0112] The third embodiment of the damping device 200 is Figures 20 to 25. Unlike the previous embodiment, damping element 210 is elliptical rather than circular. This elliptical design allows for different damping in different directions. Similar to the previous embodiment, damping element 210 includes a central first through-hole 212 and a head 214 with a protrusion 216. Similarly, ribs 218 are provided on the underside of the head. A portion 220 with a reduced diameter is formed adjacent to the upper side of head 214.

[0113] at last, Figures 26 to 31 There is shown a fourth embodiment of a damping device 300. As in the previous embodiments, the damping element 310 comprises a central first through hole 312 and a head 314 with a protrusion 316. Likewise, ribs 318 are provided on the underside of the head.

[0114] Damping device 310 differs from the previous embodiment in particular with respect to the presence of only one sleeve 250. In this embodiment, it has a circumferential ring 252, so that, during subsequent use, no gasket is required between the head of connecting element 3 and damping element 310. To ensure particularly secure fastening of sleeve 250 in damping element 310, sleeve 250 has a recess 254 that interacts with a corresponding projection on damping element 310. Second damping element 310 is secured in a known manner to the portion of this single sleeve 250 that protrudes from first damping element 310.

[0115] Now, refer to Figure 32 , shows a schematic process of a method for manufacturing a damping device 1. In a first step a, two identically constructed damping elements 10 are provided. Prior to, simultaneously with, or after this, a single sleeve 50 is provided in step b, and in step c, this single sleeve 50 is first placed in one of the two damping elements 10 and subsequently in the remaining damping element 10.

[0116] In step a, the damping element 10 can be provided by injection molding the damping element 10. Alternatively, the damping element 10 can also be produced by vulcanization or extrusion. In principle, various production methods are possible. On the one hand, the damping element 10 and the single sleeve 50 can be arranged separately from each other, so that in step c, the single sleeve 50 is first inserted into one of the two damping elements 10 and then into the damping element 10 below it.

[0117] Alternatively, the single sleeve 50 is first placed in an injection mold, and one of the two damping elements 10 is produced by injection molding, i.e., the single sleeve 50 is overmolded accordingly. This way, the single sleeve 50 is positioned correctly in the damping element 10, eliminating the need for separate placement of the single sleeve 50 in the damping element 10. This further facilitates the manufacturing method. If the sleeve 50 is made of thermoplastic, it can also be produced by injection molding. In this regard, it is particularly preferred to produce only one sleeve 50 in the same tool, so that the damping element 10 having the single sleeve 50 can be produced therein using 2K injection molding.

[0118] The second damping element 10 is also manufactured by injection molding, without a sleeve in the injection mold. In this case, preferably, the damping element 10, with only one sleeve 50 preassembled therein, is at least partially positioned in the component opening until the bottom side of the head 14 abuts the component top side. The remaining damping element 10 is then inserted into the component opening from the other side of the first component A, so that the second damping element 10 also engages the single sleeve 50 and the bottom side of the head 14 of the second damping element 10 abuts the opposite component top side of the first component A.

[0119] In a preferred embodiment of the manufacturing method, sleeve 50 is made of metal or thermoplastic. In particular, sleeve 50 is made of an electrically conductive material, particularly preferably an electrically conductive thermoplastic with or without fiber reinforcement. By selecting the appropriate material, damping device 1 can be adapted to the desired application.

[0120] In another preferred embodiment of the manufacturing method, one of the two identical damping elements 10 is provided by overmolding the single sleeve 50 with a material for the damping element 10 having a Shore A hardness between 40 and 80. In this method, the single sleeve 50 is overmolded during the injection molding of the damping element 10. Alternatively, it is preferred that the damping element 10 be manufactured by vulcanization rather than injection molding. It is particularly advantageous in this context when the single sleeve 150 includes a plurality of through-holes 152. As explained above, this single sleeve 150 can thus be positioned particularly securely within one of the two damping elements 10.

[0121] Finally, refer to Figure 33, an embodiment of a method for connecting a first component A to a second component B is described. In a first step A1, the first component A having a damping device 1 disposed therein is provided. In an optional first step A2, the first component A and the damping device 1 are arranged, and the damping device 1 is positioned within the opening of the first component A. In a subsequent second step B, the second component B having the second component opening is aligned with the first component opening. Finally, in step C, the connecting screw 3 is inserted so that the connecting screw 3 engages with a fastening portion 7 in or near the second component B.

[0122] Reference Signs

[0123] 1 Damping device

[0124] 3 connecting screws

[0125] 5 washers

[0126] 7 Fastening part of connecting screw 3

[0127] 10 Damping element

[0128] 12 openings

[0129] 14 Head

[0130] 16 protrusions

[0131] 18 ribs

[0132] 20 The part with reduced inner diameter

[0133] 30 shaft

[0134] 32 protrusion

[0135] 34 abutting surface of the shaft

[0136] 50 sleeve

[0137] 100 damping device

[0138] 110 damping element

[0139] 112 first through hole

[0140] 114 head

[0141] 116 salient

[0142] 120 part with reduced inner diameter

[0143] 122 first through hole

[0144] 124 second through hole

[0145] 150 sleeve with through hole

[0146] 152 through hole

[0147] 200 damping device

[0148] 210 damping element

[0149] 212 first through hole

[0150] 214 head

[0151] 216 salient

[0152] 220 part with reduced inner diameter

[0153] 250 sleeve

[0154] 252 circumferential ring

[0155] 300 damping device

[0156] 310 damping element

[0157] 312 first through hole

[0158] 314 head

[0159] 316 salient

[0160] 318 ribs

[0161] AFirst component

[0162] B. Second component

[0163] D AK Head outer diameter

[0164] D AS Shaft outer diameter

[0165] D I Inner diameter of the first central through hole

[0166] D IV The reduced inner diameter of the central first through hole

[0167] H D Height of damping element

Claims

1. A damping device (1; 100; 200; 300) which can be fastened in an opening of a first component (A) and by which a damping connection between the first component (A) and a second component (B) can be achieved, comprising three components: a. Two identically constructed damping elements (10; 110; 210; 310), wherein each of the damping elements (10; 110； 210; 310) is made of an elastomer or a thermoplastic elastomer and comprises: a1. A head (14; 114; 214; 314) having a first outer diameter (D AK ), a2. The shaft portion (30) has a diameter smaller than the first outer diameter (D AK )'s second outer diameter (D AS ) and from the The bottom side of the head (14; 114; 214; 314) is extended, and a3. A first central through hole (12; 112; 212), comprising a portion adjacent to the head (14; 114; 214; 314) a radially inwardly projecting protrusion on the upper side, and b. Only one sleeve (50; 150; 250) having a central second through hole, at least partially arranged in the central first through hole (12; 112; 212) of each damping element (10; 110; 210; 310) by friction connection and / or material connection, and the only one sleeve (50; 150; 250) having an axial length that is greater than the axial length of a single damping element (10; 110; 210; 310) but less than the axial length of two damping elements (10; 110; 210; 310) axial length, so that c. Through the only one sleeve (50; 150; 250), the two identically constructed damping elements (10; 110; 210; 310), the first component (A) is arranged between the two and can be fastened to each other, wherein, c1. The two identically constructed damping elements (10; 110; 210; 310) have heads (14; 114; 214; 314) have bottom sides facing each other, and, c2. The bottom of the head (14; 114; 214; 314) of the two damping elements (10; 110; 210; 310) side abuts the first component (A), and c3. The two identically constructed damping elements (10; 110; 210; 310) have shaft portions (30) that deviate from the corresponding The side faces of the head of the damping element (10; 110; 210; 310) abut against each other.

2. The damping device (1; 100; 200; 300) according to claim 1, wherein in the head portion (14; 114; 214; 314), each of the damping elements (10; 110; 210; 310) includes a protrusion (16; 116; 216; 316) extending radially outwardly and parallel to the shaft portion (30).

3. The damping device (1; 100; 200; 300) according to claim 1, wherein: In the head portion (14; 114; 214; 314), each damping element (10; 110; 210; 310) includes a protrusion (16; 116; 216; 316) extending radially outwardly and parallel to the shaft portion (30); and, between the shaft portion (30) and the protrusion (16; 216; 316), a plurality of ribs (18; 218; 318) are provided on the bottom side of the head portion (14; 214; 314).

4. The damping device (1; 100; 200; 300) according to claim 1, wherein a plurality of first through-holes (122) and / or second through-holes (124) are provided in the head portion (114) of the damping element (110).

5. A damping device (1; 100; 200; 300) according to claim 1, wherein each damping element (10; 110; 210; 310) includes a plurality of radially inwardly protruding protrusions (32) in a central first through hole (12; 112; 212), wherein the protrusions (32) achieve a friction connection with the only one sleeve (50; 150; 250).

6. The damping device (1; 100; 200; 300) according to claim 1, wherein each of the damping elements (10; 110; 210; 310) has a Shore A hardness between 40 and 80 Shore A.

7. The damping device (1; 100; 200; 300) according to claim 1, wherein the only one sleeve (150) comprises a plurality of through holes (152).

8. A first component (A) having a damping device (1; 100; 200; 300) according to any one of claims 1 to 7, the damping device (1; 100; 200; 300) being arranged in a component opening of the first component (A).

9. A component structure comprising a first component (A) according to claim 8 and a second component (B) having a second opening and a connecting element, wherein the connecting element extends through the damping device (1; 100; 200; 300) and engages with an assembly fastening portion (7) in or near the second component (B).

10. The component structure according to claim 9, wherein the inner diameter of the only one sleeve (50; 150; 250) is greater than the outer diameter of the connecting element, so that radial tolerance compensation can be achieved.

11. The component structure according to claim 9 or 10, wherein the connecting element comprises a head portion and a shaft portion, and a washer (5) is provided between the head portion of the connecting element and the damping element (10; 110; 210) of the damping device (1; 100; 200) arranged adjacent thereto, wherein The outer diameter of the gasket (5) is greater than the inner diameter of the opening in the first component (A).

12. A method for manufacturing a damping device (1; 100; 200; 300) according to any one of claims 1 to 7, comprising the following steps: a. Providing two damping elements (10; 110; 210; 310), b. Providing only one sleeve (50; 150; 250), c. first arranging the only sleeve (50; 150; 250) in one of the two damping elements (10), and then arranging it in the remaining damping element (10; 110; 210; 310), so that the two damping elements (10; 110; 210; 310), can be fastened to each other by means of only one sleeve (50; 150; 250), wherein the two A first component (A) is arranged.

13. The manufacturing method according to claim 12, wherein the only one sleeve (50; 150; 250) is made of metal or thermoplastic.

14. Manufacturing method according to claim 12 or 13, wherein said only one sleeve (50; 150; 250) is made of an electrically conductive material.

15. The manufacturing method according to claim 12 or 13, wherein The two damping elements (10; 110; 210; 310) are provided by overmolding the sleeve (50; 150; 250) with a material of the damping element (10; 110; 210; 310) having a Shore A hardness between 40 and 80 Shore A hardness. 210; 310).

16. A method for connecting a first component (A) and a second component (B), comprising the following steps: a1. Providing a first component (A) according to claim 8, or a2. Providing a first component (A) and a damping device (1; 100; according to any one of claims 1 to 7; 200; 300), and the damping device (1; 100; 200; 300) is arranged on the first component (A) opening, then b. arranging a second component (B) having a second component opening aligned with the first component opening, and c. Inserting the connecting element so that the connecting element is in or adjacent to the second component (B) (B) is engaged with the assembly fastening portion (7).

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