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

Abstract

The invention relates to a damping device (1) which can be fastened in an opening of a first component (A) and by means of which a damped connection of the first component (A) to a second component (B) can be achieved. The damping device comprises two identically constructed damping elements (10, 110, 210), wherein each damping element (10, 110, 210) comprises a head (14) having a first outer diameter (D AK ), a shaft portion (30) having a second outer diameter which is smaller than the first outer diameter (D AK ) and which extends from the lower side of the head (14), and a central first through-hole (12) arranged within the shaft portion (30). The shaft portion (30) comprises a circumferential wall having a plurality of holes (40) such that the two identically constructed damping elements (10, 110, 210) can be fastened to each other by means of the shaft portion (30) using a form fit and / or a friction fit connection, wherein the lower sides of the heads (14) are arranged facing each other and the first component (A) is arranged therebetween.

Description

Technical Field

[0001] This invention relates to a damping device (comprising two identical damping elements, each having a central first through-hole), comprising a first component of the damping device and component connections via the damping device. Furthermore, this invention also relates to corresponding connection methods and manufacturing methods. Background Technology

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

[0003] To secure the fastening device in the component opening of the first component, two fastening devices with different constructions are conventionally used, each arranged on a component side. Therefore, the fastening device accordingly includes interacting fixing elements, damping elements, sleeves, etc. on each component side.

[0004] For example, US 2012 / 0049425 A1 describes a mounting device for physically connecting an appliance or electrical panel with a mounting structure. The mounting device provides shock and force isolation. The mounting device comprises an internal and external structure mechanically connected by a flexible damping structure. The external part of the mounting device is mechanically connected to a fastening structure via a removable connection device. The appliance or electrical panel is connected to the central portion of the mounting device via a mounting mechanism.

[0005] US 2017 / 0207615 A1 relates to a cable guiding assembly configured to support a media cable. The cable guiding assembly includes fastening features / structures configured and sized in a releasable manner relative to a supporting structure.

[0006] DE 10 2016 106 152 A1 describes a fastening device for securing a decoupling device relative to the edge of an orifice opening of a shielding member. The decoupling device for vibration decoupling connection of a sleeve and a shielding member includes at least one bridging element, which includes a connecting means at its outer radial edge for fastening connection between the bridging element and the edge of the orifice of the shielding member. The connecting means includes at least four tabs that project radially outward from the bridging element. A group of at least two tabs of the bridging element is provided to abut a first outer side of the shielding member, and the remaining portions of at least two tabs are provided to abut a opposite second outer side of the shielding member. The orifice edge of the tabs with the group and the remaining portions can be secured relative to the decoupling device by a clamping engagement.

[0007] DE 60 2004 002 062 T2 describes a vibration damping and heat insulation shield fixed to a vibration source, for example, to cover at least a portion of the heat source. Further, it forms a gap with the surface of the heat source to reduce thermal radiation from the heat source. The heat insulation shield includes a vibration damping and heat insulation plate body, a collar member, a gasket, and a joint member.

[0008] US 2007 / 0026735 A1 describes a wire connector that automatically seals and provides stress relief upon wire insertion. The wire connector includes a wire channel passing through a flexible housing that seals the wire inserted through the channel and a wall opening into which a plug is secured. A more robust skeleton supports this sleeve and includes attachments that allow the wire to pass through the channel but prevent it from exiting.

[0009] EP 2 105 617 A2 describes a split-type fastening device for a surface element, the surface element comprising a base element and a connecting element. The base element is configured on both sides to have a fastening surface on its first side and a connecting pin protruding from its second side, by means of which a snap-fit ​​connection with the connecting element can be created. The connecting element is also configured on both sides to have a fastening surface on its first side and a pin receiver for the connecting pin of the base element on its second side, and the connecting element has an opening in which the pin receiver is resiliently disposed.

[0010] US 5,537,714 A describes a sealing gasket made of plastic material for use with metal bolts in wall structures to protect wires, cables, conduits, etc. The sealing gasket includes a cylindrical body with an enlarged flange at one end and a radially projecting spring clip on the outside of the body, allowing the sealing gasket to be inserted into a hole having a web size, wherein the edge of the hole is captured between the clip and the flange. On the other side of the flange, there are radially opposing axially projecting spring fingers. The flange also has two diameter-opposing holes, and the fingers and holes are positioned such that two sealing gaskets can be flange-to-flange connected by axial rotation of one relative to the other.

[0011] US 4,656,689 A also relates to a sealing gasket for protecting a conduit passing through a wall opening and for providing an air seal between the conduit and a wall edge surrounding the wall opening. The sealing gasket has a rigid fastener portion with a protrusion extending therefrom and a locking device at the end of the protrusion for engaging the wall edge surrounding the wall opening. A resilient sealing portion receives the protrusion and has an orifice smaller than the outer dimensions of the conduit.

[0012] US 8,409,395 B2 describes a method for forming a through-hole using a composite structure having multiple internal compartments. An insert ring is attached to the composite structure to form a protective layer around the through-hole formed within the composite structure. An adhesive is disposed between the composite structure and the insert ring to form a fluid-impermeable seal between the insert ring and the internal compartments.

[0013] Finally, DE 10 2017 122 236 A1 describes a fastening system for securing a component to a carrier component. This fastening system includes a fastening bolt that passes through a through-channel of the component and can be fastened in a fastening hole in the carrier component, and includes an outer sleeve and an inner sleeve axially movably mounted in the through-channel of the outer sleeve, wherein the inner sleeve forms a through-channel for the fastening bolt, and the fastening bolt is axially movably mounted in the through-channel for the fastening bolt. Furthermore, the fastening system includes a spring washer mountable to the outer sleeve, configured to position itself against a first side of the component during fastening, and a second spring washer mountable to the outer sleeve, configured to position itself against a second side of the component, the second side being located opposite the first side, during fastening.

[0014] The known drawbacks of the device are the difficulty in assembly and production, as well as the lack of damping effect for axial and radial vibrations.

[0015] A vibration absorber is described in DE 10 2019 107 885 A1. The vibrator also includes a vibration absorber mass block with an opening and at least two spring devices inserted into the opening. Each spring device includes at least one elastomeric spring element and a support body, wherein the support body houses the spring element. The support body includes an insertion portion for inserting the support body and the spring element into the opening, wherein the insertion portion is inclined relative to the longitudinal axis of the vibration absorber.

[0016] Another type of vibration absorber is described in DE 10 2019 104 386 A1. This vibration absorber for absorbing and / or damping vibrations of vehicle components includes at least one mass element, at least one fastening element for securing the absorber to the vehicle component, at least one spring device, and at least one fixing device that connects the mass element and the fastening element to each other. The spring device is designed as at least one elastomeric molded part, which is manufactured separately from the mass element and the fastening element. The fixing device receives the elastomeric molded part to form at least one elastic support unit that elastically separates the mass element from the fastening element.

[0017] A vibration absorber, also known as a damper or vibration-damping pendulum, is a special type of vibration absorber because it is not fixed between two objects or components, but only to one component. In this case, the natural frequency of the absorber matches the resonant frequency of the component to be damped, causing the component to move only slightly at that frequency. Conversely, the amplitude of the component at frequencies below and above this is larger than without the absorbing mass. Therefore, a damped connection between the first and second components cannot be achieved using a vibration absorber, and thus these documents do not offer any inspiration for corresponding damping devices.

[0018] US 2006 / 244188 describes a vehicle body mounting assembly having a first retainer and a second retainer, with a core structure having replaceable elastomers. A mounting plate is disposed between the elastomers for securing the assembly to a vehicle frame. When fasteners are secured to the vehicle frame, retaining clips help to hold the assembly within the frame.

[0019] DE 199 16 098 A1 describes another device for connecting two components. The device includes a separate, resilient decoupling element that passes through a receiving hole disposed in one component and receives the component between its components, and a connecting device that passes through the decoupling element and can be positioned in the other component and tightly clamp the decoupling element onto the other component.

[0020] A damping bearing is known from DE 10 2005 010 433 A1. The damping bearing is used for the vibration and sound decoupling fastening of a metal sheet. The damping bearing consists of two bearing components made of substantially elastic material, holding the metal sheet in a through-hole region and through which a fastening device passes. To improve this damping bearing in terms of secure fastening of the components and component versatility, the damping bearing includes two structurally identical bearing components, wherein the circumferential portion between the through-hole and a radial support includes at least one tooth and a tooth-engaging groove, the tooth-engaging groove having an opposing surface consistent with the tooth and having the same number as the number of circumferential teeth arranged at or next to the tooth.

[0021] US 9,771,030 B1 describes a mounting system for an electronic control module. The fastening system includes a first fastening member, a second fastening member, and a third fastening member, the third fastening member being connected to the first and second fastening members via a plurality of first isolation devices and a plurality of first fastening members. The third mounting element includes a base having a first end and a second end. The base is connected to the electronic control module via at least one second isolation device and at least one second fastening member. The third fastening member includes a first leg connected to the first fastening member. The third fastening member also includes a second leg connected to the second fastening member.

[0022] US 4,530,491 A describes a damping device. Here, axial loads and motions acting on a single elastic body of the mount cause compressive deflection and bidirectional expansion of a first annular portion of the body, and deflective shear of a second tubular portion of the body. The second portion of the body also imparts lateral stability to the mount.

[0023] US 4,883,319 A describes a bushing assembly for a hinge in a motor vehicle seat assembly, comprising a pair of identical interlocking sleeves, each sleeve having a pair of opposing shanks extending axially from an annular portion. Each shank portion has a radially outwardly oriented and deflectable shoulder. The shoulder on the shank portion engages with a corresponding recessed bracket on the inner wall of the annular portion of the opposing sleeve, so as to snap together to form an integral bushing assembly through which a hinge pin passes.

[0024] US 2010 / 0086377 A1 describes a vibration-isolating fastener insert structure adapted to be received partially or completely in a hole in a panel. The fastener insert structure includes a rigid cylindrical hub having an outwardly extending flange and a longitudinally penetrating opening adapted to receive a fastener element, and a resilient bushing that is fitted tightly around or formed around the hub and has a groove therein for receiving the outer flange. Further, the structure includes an upper shell and a lower shell.

[0025] CN 111140612 A discloses a shock absorber, which includes a connecting plate, a connecting bolt, a first shock-absorbing device, and a second shock-absorbing device. The first shock-absorbing device includes a first sleeve and a first shock-absorbing component covering the first sleeve. The second shock-absorbing device includes a second sleeve and a second shock-absorbing component covering the second sleeve. The connecting bolt passes through the first sleeve, the second sleeve, and the connecting plate in sequence.

[0026] EP 2 980 437 A1 describes a vibration damping fastening system having a bolt with a bolt head, a housing with a hole for form-fit fastening of the bolt, a flange with a channel (the channel being coaxial with the hole for the bolt), and an elastic element between the flange and the housing and / or between the bolt with the bolt head and the flange. The elastic element comprises an all-metal pillow.

[0027] US 7,185,873 B2 describes a bracket mounting structure for holding a drive shaft center bearing to a vehicle body component by bolts and nuts. The structure includes a cylindrical collar formed with a flange at its upper end, which is fitted to and secured to the vehicle body component by bolts and nuts. The structure also includes a pair of upper and lower rubber bushings mounted on the outer periphery of the collar and clamping the bracket therebetween, and a washer disposed at the lower end of the lower rubber bushing. The outer periphery of the lower end of the collar extends through the inner periphery of the washer and expands outwards.

[0028] JP 2014-095441 A1 discloses a vibration control bushing, comprising an inner cylinder portion formed of metal, into which the post portion of a screw is inserted, an outer cylinder portion formed of rubber fastened to the outer surface of the inner cylinder portion, and a washer portion fastened to the surface of the outer cylinder portion opposite to the head of the screw. A groove for inserting a retainer is provided on the circumferential outer surface of the outer cylinder portion. When the screw is tightened, the outer cylinder portion is compressed, the head of the screw and the mating body clamp the washer portion, and the side of the groove contacts both sides of the support.

[0029] Finally, EP 1 054 386 A2 discloses a method for connecting a vibrating floating washer with a sleeve to a heat insulation plate, the heat insulation plate including insertion holes for fastening screws. The method includes placing a metal damping element inside and around the fastening screw insertion holes, inserting the outer sleeve of an outer washer and the inner sleeve of an inner washer into the bolt insertion holes from both sides of the heat insulation plate, respectively, and engaging and securing the outer and inner washers with fastening portions provided on the outer sleeve and / or the inner sleeve, such that the heat insulation plate remains in a state where it does not contact either the outer or inner washer.

[0030] DE 10 2019 111 078 A1 describes another fastening device with a damping effect and the connection of components to the fastening device. The fastening device with a damping effect is made of two identical fastening units, each having a central first through-hole. Each fastening unit includes an assembly element and a damping element. The assembly element is disc-shaped, having a central second through-hole, and an identical stop structure extends from a first side of each assembly element. The damping element is disc-shaped, having a central third through-hole and is at least partially arranged in the central second through-hole of the assembly element. Due to this structure, the two fastening units can be fastened to each other through their opposing first sides, wherein the first sides have identical stop structures for corresponding mounting elements, and a first component is arranged between them.

[0031] These damping fasteners require a significant amount of work in terms of production and assembly.

[0032] Based on these known fastening or damping devices with damping effects, the object of this invention is to provide an improved damping device that can be fastened without any tools and is applicable to different material thicknesses. Another object of this invention is to provide a corresponding connection method and manufacturing method. Summary of the Invention

[0033] The damping device of the present invention can be fixed in the opening of the first component. Furthermore, the damping device of the present invention can achieve a damped connection between the first component and the second component. In particular, the damping device of the present invention comprises only two structurally identical damping elements, each damping element comprising: a head having a first outer diameter, a shaft having a second outer diameter smaller than the first outer diameter, the shaft extending from the underside of the head, and a central first through hole disposed within the shaft. The shaft includes a circumferential wall having a plurality of holes. The two structurally identical damping elements can be fastened to each other via the shaft by form fit and / or friction fit, wherein the undersides of the heads are arranged opposite each other and the first component is disposed between them.

[0034] In the following description, for better understanding of the invention, the use of the damping device of the invention is explained. A key feature of this document is that the damping device consists of two identical damping elements. Therefore, the damping device comprises two parts. The connection between the two damping elements is achieved through a shaft portion designed with a circumferential wall having multiple holes, such that the damping elements are fastened to each other by frictional fit and / or form fit. Therefore, according to one alternative, no locking structure is provided for securing the damping element in the opening of the first part. In a second alternative, the shaft portion has a radially outwardly extending protrusion at the end opposite to the head, serving as a locking structure for fastening the damping element in the opening of the first part. In a preferred embodiment, the damping element is designed to be circular or elliptical. Here, an elliptical design is particularly preferred to achieve different damping in different directions.

[0035] For spatial orientation, the longitudinal axis of the damping device is defined by a central first through-hole in a damping element with identical structure. 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, passing through the central first through-hole of the damping element with identical structure.

[0036] In use, firstly, two identical damping elements are provided for fixing in an opening in the first component, such as an opening in the mounting flange of a pump that generates vibration. Alternatively, the first component can also be a rope channel designed to be fixed to the vehicle body (as an exemplary second component). The exemplary component thickness in the opening portion of the first component is between 1 mm and 3 mm.

[0037] In the first step, one of the damping elements is provided, its shaft portion arranged in the opening of the first component. Here, the length of the shaft portion is chosen such that, with the head abutting against the first side of the first component, the end of the shaft portion facing away from the head is at least flush with, and particularly extends beyond, the opposite second side of the first component. Therefore, the outer diameter of the head is chosen to be large enough that the damping element abuts against the first component adjacent to the first opening. The contact surface or attachment edge formed in this way defines a contact plane at the first component, which is perpendicular to the longitudinal axis of the damping device. In one embodiment, the contact surface or attachment edge is continuously arranged. In an alternative configuration, the contact surface or attachment edge is partially arranged, for example, having holes, etc. The shaft portion is preferably constructed in a cylindrical or elliptical shape on its outer side, particularly without any locking features, etc., and is preferably not arranged in the component opening in a press-fit manner, and the damping element arranged in the component opening is not arranged there in a way that prevents loss. Instead, the first damping element is preferably loosely arranged in the component opening of the first component.

[0038] To limit the insertion of the corresponding damping element into the opening of the first component, i.e., to achieve a defined insertion depth, a radially outwardly extending protrusion can be provided on the outer side of the shaft near the underside of the head. This protrusion can be continuous or intermittent. Alternatively, this function can also be achieved by providing two or more radially outwardly extending protrusions that provide another contact surface on the component surface in the shaft, adjacent to the contact surface of the head or the attachment edge.

[0039] Once the first of two identical damping elements has been arranged on the side of the first component and its shaft extends into and preferably through the opening in the first component, the other of the two damping elements is arranged in a similar manner on the opposite side of the second component to secure the first damping element.

[0040] Because there are multiple holes in the circumferential wall of the shaft portion, the circumferential wall includes the remaining wall segments between the holes. Alignment of the first and second damping elements is now performed such that the remaining wall segments of the first damping element engage with the holes in the shaft portion of the second damping element, and vice versa. To ensure proper spatial orientation of the two damping elements, the damping elements preferably include markings or labels on the upper side of the head and / or the head-facing end of the shaft portion.

[0041] As a result, a remaining wall segment of one damping element is attached to at least one side, preferably both sides, of the remaining wall segment of another damping element. Thus, two structurally identical damping elements are connected and secured to each other via a shaft by form fit and / or friction fit. Furthermore, the resulting damping device is fixed in an opening in the first component in a way that prevents loss.

[0042] Following the pre-assembly of the fastening device in this manner, a second component is provided. This occurs at the same production location or at another production location, depending on the intended process. This will also be explained in detail later.

[0043] The opening of the second component is aligned with the central first through-hole of the damping element. Subsequently, a connecting element, such as a connecting screw or bolt, is guided through the central first through-hole and fastened in the second component or a fastening portion adjacent to the second component. Here, fastening is preferably performed such that the compression of the corresponding damping element provides a damping effect against axial and radial vibrations. In this case, the material selection for the damping element must be done in a way that provides sufficient damping effect on the one hand, while simultaneously ensuring the necessary connection stability on the other. For this purpose, elastomers or thermoplastic elastomers are particularly suitable.

[0044] One advantage of this method is the reduced production workload due to the smaller number of parts and the use of damping elements with identical structures. The aforementioned labels or markings can be used to facilitate correct spatial assembly of the damping elements. This reduces the risk of incorrect assembly. Furthermore, it facilitates automated installation.

[0045] A further advantage arises from the holes provided in the circumferential walls of the shaft. Therefore, due to the available radially inward elasticity of the remaining wall segments, they allow the damping element to be more easily inserted into the component opening of the first component. This will be explained later with reference to a preferred embodiment.

[0046] Due to the presence of the orifice, the contact or adjacent surface between two identical damping elements is further enlarged compared to damping elements without orifices. This enlarged contact or adjacent surface additionally provides clamping of the damping element within the shaft, thus offering reliable anti-loss safety.

[0047] Due to the length of the shaft, the fastening of the damping device in the first component is further improved, because in particular, the shaft passes completely through the opening in the first component, causing the damping device to be securely held in the opening of the first component.

[0048] In a preferred embodiment of the damping device, each hole extends axially from the end of the shaft facing away from the head toward the lower side of the head, preferably extending all the way to the lower side of the head. This maximizes the length of the hole in the axial direction, which is advantageous for the frictional fit connection between the shaft portions of the damping elements, as it further increases the contact surface or adjacent surface between the damping elements.

[0049] In another advantageous embodiment of the damping device, the holes are evenly spaced apart from each other. Furthermore, each hole at least partially includes a circumferential extension smaller than the circumferential extension of an adjacent wall segment, such that two identical damping elements can be fastened together by press-fit, or the extension coincides with the circumferential extension of an adjacent wall segment of the circumferential wall of the shaft. As a second alternative, in the case of holes extending parallel to the longitudinal axis of the damping element or damping device, the damping elements can be fastened together by form fit or friction fit. Regarding the first-mentioned alternative, a press fit can be achieved due to the design of the holes and therefore the design of the remaining wall segments, while a friction fit connection is constructed to be particularly stable.

[0050] In other words, this means that the force required to separate the damping element is further increased compared to the second alternative.

[0051] Furthermore, it is preferable that the circumferential extension of each hole near the lower side of the head is greater than the circumferential extension at the end of the shaft facing away from the head, resulting in undercut in the axial direction. This allows for a further increase in the force required to separate the damping element. This also has a positive effect on securing the damping element within the component opening of the first part.

[0052] Preferably, each damping element includes a protrusion in its head on the radially outer side, the protrusion extending parallel to the shaft. This protrusion serves as a contact surface on the upper side of the component adjacent to the opening of the first component. To increase the stability of the damping element head, in conjunction with this embodiment, it is particularly preferred to provide a plurality of ribs on the underside of the head between the shaft and the protrusion.

[0053] In an advantageous embodiment, the damping device further comprises only a sleeve having a central second through-hole, which is at least partially arranged in the central first through-hole of each damping element by means of a friction fit and / or a material-to-material bond / secure connection, such that two structurally identical damping elements can be additionally fastened to each other by a single sleeve. Here, a key feature is that the damping device now consists of two structurally identical damping elements and a sleeve. Therefore, the damping device comprises three parts, specifically only three parts. The connection between the two damping elements is supported by holding the single sleeve in the central first through-hole of each damping element by means of a friction fit and / or secure connection. Therefore, preferably, no locking structure is provided for securing the damping elements in the opening of the first component.

[0054] When using this embodiment, it is preferable to provide one of the damping elements in the first step, which has a single sleeve at least partially disposed in a central first opening. For this purpose, the single sleeve is inserted into the central first through-hole, particularly from the end of the shaft facing away from the head, such that the single sleeve is at least partially disposed in the central first through-hole. Because the single sleeve is frictionally fitted and / or securely disposed in the central first through-hole, the sleeve is fastened there in a way that prevents loss. A portion of the single sleeve preferably protrudes from the shaft of the first damping element.

[0055] A first damping element, correspondingly prepared with a single sleeve extending beyond the shaft portion, is now arranged in the opening of the first component. Subsequently, the other of the two damping elements is arranged on the opposing second component side as described initially, such that the remaining wall sections are at least partially engaged with each other. Thus, the free end of the single sleeve, for example the portion extending beyond the shaft portion of the first damping element, is additionally secured in the central first through-hole of the second damping element by friction fit and / or secure engagement. In this way, the resulting damping device is secured in the opening of the first component with a special anti-loss mechanism.

[0056] Preferably, the axial length of the single sleeve is greater than the axial length of one damping element but less than the axial length of two damping elements. This ensures that the compression of the respective damping element can provide damping for both axial and radial vibrations. Furthermore, when using only one sleeve, the material selection for the damping element can be more focused on damping effect, as the resulting reduction in the stability of the damping device can be compensated by the stabilizing effect of the single sleeve. The single sleeve is preferably made of metal or thermoplastic material.

[0057] In another preferred embodiment of the damping device with a single sleeve, each damping element includes a plurality of radially inwardly projecting protrusions located in a central first through-hole, which achieve a frictional engagement with the single sleeve. In this way, the single sleeve is press-fitted into the central first through-hole of the respective damping element. During assembly, the single sleeve can first be secured in a loss-proof manner to the first of the two damping elements. The first or prepared damping element, with the single sleeve secured therein in a loss-proof manner, is then inserted from one side into the opening of the first component through the preferred protruding portion and shaft portion of the single sleeve. When the remaining second damping element is inserted from the opposite component side into the opening of the first component, the second damping element is also secured in a loss-proof manner to the single sleeve. Therefore, the machining of the corresponding damping device becomes easier and particularly supports automated machining.

[0058] In a preferred embodiment of the damping device, the central first through-hole includes a protrusion on the upper side adjacent to the head, which projects radially inward. When the damping device is used with a single sleeve, this protrusion serves to form an axial, particularly localized, contact surface or attachment edge for the single sleeve. In this way, it ensures that the single sleeve is inserted into the central first through-hole until a defined position is achieved. For a circular central first through-hole, its inner diameter near the upper side of the head is smaller than the outer diameter of the single sleeve. This reduction in the inner diameter near the upper side of the head is performed, for example, by a step, a chamfer, or a combination thereof. The corresponding protrusion can be constructed continuously or intermittently. Alternatively, with respect to a non-circular central first through-hole configured in combination with a non-circular sleeve, the corresponding contact surface or attachment edge can be formed by a protrusion projecting radially inward relative to the longitudinal axis of the damping element. In this case, the contact surface or attachment edge is also provided by a step, a chamfer, or a combination thereof. Providing a beveled surface to offer a contact surface or attachment edge for a single sleeve has the following advantages: the performance of the damping element is improved under compression in subsequent use, and in particular, it prevents the single sleeve from shearing material from the damping element.

[0059] Advantageously, each damping element has a Shore A hardness between 40 and 80 Shore A. This preferred embodiment results in the damping element having a damping effect suitable for the corresponding application.

[0060] The first component according to the invention has a damping device according to the invention, which is arranged in a component opening of the first component. The first component is, for example, a pump, such as a vacuum pump, wherein the damping device is pre-assembled in an opening of a mounting flange. As an alternative to a pump, the first component may also be a rope channel or the like, intended to be fixed to, for example, a vehicle body (as a second component) by a damping bearing. The material thickness of the first component adjacent to the component opening is preferably between 1 mm and 3 mm. For the resulting technical effects and advantages, refer to the above description of the damping device of the invention to avoid repetition.

[0061] In this document, it is particularly preferred that the length of the shaft portion is selected such that when the head is adjacent to one side of the first component, the end of the shaft portion facing away from the head is at least flush with, and in particular, protrudes beyond, the opposite side of the first component. Doing so provides a particularly reliable fastening of the damping elements to each other.

[0062] The component connection of the present invention includes a first component of the present invention, a second component having a second opening, and a connecting element, wherein the connecting element extends through the damping device and engages with a matching fastening portion in or adjacent to the second component. This configuration clearly demonstrates that releasable fastening, such as a threaded connection, can be achieved using the damping device of the present invention.

[0063] In a particularly preferred embodiment, when the damping device is used with a single sleeve, it is advantageous that the single sleeve of the damping device connects the components in a screwwing-on-block manner while the two components are securely joined. Consequently, the length or axial extension of the single sleeve in the longitudinal direction of the damping device is preferably less than the axial extension of the damping element in the longitudinal direction of the damping device. Reference is also made to the above description of the damping device of the invention regarding the connection of the components.

[0064] In a preferred embodiment of the component connection, radial tolerance compensation during the establishment of the component connection can be achieved using a single sleeve with an inner diameter larger than the outer diameter of the connecting element. This, in particular, facilitates the fastening of the two components together, whether done manually or automatically.

[0065] Finally, in another preferred embodiment of the component connection, the connecting element includes a head and a shaft, and a disc is disposed between the head of the connecting element and the damping device's adjacent damping element, wherein the outer diameter of the disc is larger than the inner diameter of the opening in the first component. Thus, the fastening force affects not only the damping device but also the first component. Furthermore, the disc, designed and sized in this way, prevents the first component from completely releasing from the second component in the event of damping device failure.

[0066] The method for connecting the first component and the second component of the present invention includes the following steps: providing the first component of the present invention, or providing the first component and the damping device of the present invention; arranging the damping device of the present invention in an opening of the first component; then arranging a second component having an opening aligned with the opening of the first component; and inserting a connecting element such that the connecting element engages a suitable fastening portion in or near the second component. Therefore, the component connection of the present invention can be established using the connection method of the present invention. Therefore, regarding the resulting technical effects and advantages, please refer to the above description.

[0067] The inventive manufacturing method of the damping device of the present invention includes the following steps: providing two structurally identical damping elements, arranging the two damping elements such that the end of the shaft portion of the first damping element facing away from the head faces the end of the shaft portion of the second damping element facing away from the head, and fastening the two damping elements together such that the lower sides of the heads of the two structurally identical damping elements face each other, wherein a first component is arranged between them, and they are connected to each other by means of form fit and / or friction fit through the shaft portion. As can be seen from the above steps, the damping device of the present invention is provided by an exemplary manufacturing method. To avoid repetition, reference is made to the above description relating to the damping device of the present invention.

[0068] Preferably, the material of the damping element has a Shore A hardness between 40 and 80 Shore A. This preferred configuration ensures that the damping element has damping characteristics suitable for the corresponding application.

[0069] Furthermore, the manufacturing method may include the following steps: providing a single sleeve and first arranging the single sleeve in one of two structurally identical damping elements, and then in the remaining damping elements, such that the two structurally identical damping elements in which the first component is arranged can be additionally fastened to each other by the single sleeve. This further supports the fastening of the damping elements to each other. Moreover, using a single sleeve can have a positive effect on the subsequent establishment of a connection between the first and second components, as discussed above.

[0070] In a preferred embodiment of the manufacturing method, the sleeve is made of metal or thermoplastic. In particular, the sleeve is made of a conductive material, especially preferably a conductive thermoplastic with or without fiber reinforcement. By selecting the appropriate material, the damping device can be adapted to the desired application.

[0071] In another preferred embodiment of the manufacturing method, one of the two structurally identical damping elements is provided by overmolding a single sleeve with the material of the damping element. In this way, the single sleeve is overmolded by the damping element during injection molding. Alternatively, it is preferred that the damping element be manufactured by vulcanization or extrusion rather than injection molding. In this case, it is particularly preferred that the single sleeve includes multiple holes. In this way, the single sleeve can be particularly securely fixed to one of the damping elements. Attached Figure Description

[0072] The invention will now be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same parts and / or elements, wherein: Figure 1 This is a top-view 3D diagram of the damping element. Figure 2 yes Figure 1 A bottom-view perspective of the damping element. Figure 3 yes Figure 1 Side view of the damping element. Figure 4 yes Figure 1 A cross-sectional view of the damping element. Figure 5 yes Figure 1 A top view of the damping element. Figure 6 yes Figure 1 A bottom view of the damping element. Figure 7 It is based on the present invention and has the following characteristics. Figure 1 An embodiment of a damping device for damping elements, Figure 8 It is based on Figure 7 An embodiment of the damping device in an assembled state is shown in a perspective view, wherein the upper damping element is partially cut open. Figure 9 It is based on Figure 7 A cross-sectional view of the shaft portion of an embodiment of the damping device in its assembled state. Figure 10 The arrangement of these elements is based on... Figure 7 A cross-sectional view of an embodiment of the first component of the damping device. Figure 11 This is a cross-sectional view of an embodiment of the component connection according to the present invention. Figure 12 This is a 3D diagram of an alternative damping element. Figure 13 yes Figure 12 A cross-sectional view of the damping element. Figure 14 yes Figure 12 A cross-sectional view of the damping element, in which a sleeve is inserted. Figure 15 It is based on the present invention and has the following characteristics. Figure 12 Alternative embodiments of damping devices for damping elements, Figure 16 is a cross-sectional view of another alternative damping element. Figure 17 is a flowchart of an exemplary connection method, and Figure 18 This is a flowchart of an exemplary manufacturing method for a damping device. Detailed Implementation

[0073] One embodiment of the damping device 1 of the present invention includes two damping elements 10 with identical structures. Preferably, no additional components or elements are required for fixing the damping device 1 in the opening of the first component A. To support the normal operation of the damping device 1, only one sleeve 50 is present in the illustrated embodiment. For better understanding, refer first to... Figures 1 to 6 An embodiment of the damping element 10 is described.

[0074] The damping element 10 is preferably formed in the shape of a disc and has an inner diameter of D. I The structure includes a central first through hole 12, a head 14, and a shaft portion 30. The head 14, as known, includes an upper side and a top surface, with an outer diameter of D. AK (See Figure 5The shaft portion 30 extends from the underside of the head 14 with an outer diameter, so that one end faces the head and the other end faces away from the head. Therefore, the first axial end of the damping element 10 is defined by the upper side of the head 14, 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. The axial height H of the damping element 10... D Measurements were taken between the upper side of the head 14 near the central first through hole 12 and the second axial end, as follows: Figure 3 As shown. The upper side of the head 14 near the through hole 12 forms a plane. In this area, a mark or label 22 is provided to support proper spatial orientation during subsequent assembly of the second damping element 10. In a further radially outward movement, the head 14 is configured to slope towards the shaft portion 30. At the end of this sloped portion, there is a protrusion 16 extending from the upper side in a direction parallel to the longitudinal axis of the damping element 10 or the shaft portion 30 and toward the end of the shaft portion 30 opposite to the head. As can be seen later, in particular, the lower side of this protrusion 16 serves as a contact surface 24 adjacent to the opening in the first component A. Furthermore, ribs 18 are provided on the lower side of the head 14 to reinforce the head 14 and thus the damping element 10. In this example, six ribs 18 are provided, as shown below. Figure 2 As shown, they are arranged at uniform intervals. To better understand this structure, Figure 4 A cross-sectional view of the damping element 10 is shown, in which the cut surface has passed through the rib.

[0075] As described above, the shaft portion 30 extends from the underside of the head 14. The shaft portion 30 includes a circumferential wall with a plurality of holes 40, which is cylindrical on the outer side. In the illustrated embodiment, there are three evenly spaced holes 40, with the remaining wall segment 42 of the circumferential wall between two holes 40. Furthermore, the holes 40 extend from the end of the shaft portion 30 facing away from the head all the way to the underside of the head 14. This design is particularly advantageous for later insertion of the damping element 10 into the component opening of the first component A, because the remaining wall segment 42 can elastically yield radially inward.

[0076] like Figure 4 As can be seen, the circumferential extension of each hole 40 on the underside adjacent to the head 14 is larger than the circumferential extension at the end of the shaft portion 30 facing away from the head. In other words, the holes 40 gradually taper from the underside of the head 14 toward the end of the shaft portion 30 facing away from the head. Therefore, the remaining wall segments 42 of the circumferential wall gradually taper in the opposite direction, that is, from the end of the shaft portion 30 facing away from the head toward the underside of the head 14. This creates an undercut in the axial direction, the importance of which becomes apparent when the damping device 1 is used.

[0077] In the illustrated embodiment, the side surface of the remaining wall segment 42, formed by the presence of the hole 40, is configured to have multiple steps. This can be seen in particular in Figures 3, 4, 7, and 8. This allows for a particularly stable form-fit and friction-fit connection between the two damping elements 10 that are fastened to each other.

[0078] As a replacement or supplement to this design, the holes 40 can also be designed such that, in the circumferential direction, they have at least partially a smaller extension than the circumferential extension of the adjacent remaining wall segment 42, thereby allowing the two identical damping elements 10 to be press-fitted together when subsequently assembled to form a damping device. The friction fit connection is particularly strengthened compared to a design where the circumferential extension of the holes 40 coincides with the circumferential extension of the adjacent remaining wall segment 42 of the circumferential wall of the shaft portion 30.

[0079] For better understanding, these two embodiments are illustrated based on aperture 40, which is not gradually tapered and / or configured to have multiple steps, but rather extends continuously parallel to the longitudinal axis of damping element 10. Corresponding optional configurations of damping element 110 are shown in... Figures 12 to 15 In this context, these will be mentioned additionally. However, these statements similarly apply to the tapered bore 40. When the circumferential extensions of the bore 40 and the remaining wall segments 42 are identical, a form fit is provided when assembling two identical damping elements 10. Furthermore, one remaining wall segment 42 of one damping element 10 is attached to two remaining wall segments 42 of another damping element 10, thereby establishing a friction-fit connection. This friction-fit connection can be strengthened by selecting a smaller circumferential extension of the bore 40 compared to the circumferential extension of the remaining wall segments 42. In this case, these views are always referenced to the same plane perpendicular to the longitudinal axis of the damping element 10 or the damping device 1.

[0080] Furthermore, the shaft portion 30 includes a chamfered surface 34 at the end facing away from the head, such as... Figure 4 As shown. The beveled surface 34 facilitates the insertion of the damping element 10 into the opening in the first component A. Furthermore, a mark or label 32 is provided at the end of the shaft portion 30 facing away from the head. This also supports proper alignment of the damping elements 10 with each other during assembly, as does the mark or label 22 on the upper side of the head 14.

[0081] In addition, refer to Figure 3 and Figure 4 The damping element 10 includes one or more latches 36. The latches 36 are used to increase the coefficient of friction when using the damping element 10. This has a particularly positive effect when the remaining wall section 42 and the circumferential extension of the hole 40 are the same. It should be noted in this context that, for clarity, the latches 36 are only used in… Figure 3 and Figure 4 As shown in the image.

[0082] The central first through hole 12 may include a protrusion in the shaft portion 30. The protrusion enables the inner diameter D of the central first through hole 12 to be determined. I The reduction in size allows the sleeve 50 inserted into the shaft portion 30 to be secured there in a frictional fit and thus prevents it from being lost.

[0083] The damping element 10 also includes a portion 20 with a reduced inner diameter near the upper side of the head 14. When the central first through-hole 12 is configured as a circle, the portion 20 with the reduced inner diameter can be provided by a step, a chamfer, or a combination thereof. Figure 4 In this design, the portion 20 with a reduced inner diameter is provided by a tapered transition. A further advantage is that, in the event of compression of the damping element 10, the risk of this portion of the damping element 10 breaking off due to the single sleeve 50 is reduced. It should generally be noted that, in addition to a complete circumferential design of portion 20, the same effect can be achieved through multiple discontinuous protrusions, as long as the insertion depth of the single sleeve 50 is limited.

[0084] Due to the outer diameter D of the head AK The diameter of the opening in the first component A is larger than that of the damping element 10, thus ensuring that the damping element 10 does not pass through the opening in the first component A but is attached to the edge of the opening. Therefore, in use, the lower side of the head 14 is arranged adjacent to the first component A. In subsequent component connections, the upper side of the head 14 is arranged adjacent to a connecting element such as a connecting screw 3 or an associated disc 5. In this state, the outer diameter of the shaft portion 30 preferably corresponds to the diameter of the opening in the first component A and extends into the opening of the first component A at least such that the end of the shaft portion 30 facing away from the head is flush with the opposite side of the first component A, preferably, the end of the shaft portion 30 facing away from the head extends beyond the opposite side of the first component A.

[0085] To provide the desired damping function through the damping element 10, the damping element 10 is preferably made of an elastomer or thermoplastic elastomer with a Shore A hardness between 40 and 80. The damping element 10 (and therefore the damping device 1) can generally be adapted to the required application area through appropriate material selection. Possible application areas are located in a temperature range between -40°C and 200°C.

[0086] Now for reference Figures 7 to 9 The damping device 1 is shown, wherein Figure 7 The damping device 1 is shown in its unassembled state. Figure 8 and Figure 9To emphasize the assembled state, the first component A is not shown for clarity. In use, a single sleeve 50 is arranged at least partially in the central first through hole 12 of the damping element 10, and the arrangement of the sleeve 50 occurs through friction fit and / or secure engagement, as described above.

[0087] The axial extension or height of the sleeve 50 in the longitudinal direction of the damping element 10 is at least equal to and preferably 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 less than the axial height H of the damping element 10. D The length of the sleeve 50 is twice the length of the hole 10 minus half. If the portion 20 has a reduced inner diameter, the axial height of the sleeve 50 is preferably equal to twice the distance between the step formed by the portion 20 with the reduced inner diameter and the location of half the length of the remaining wall section 42. In this way, in the case of the subsequent tightening block, where the only sleeve 50 is adjacent to the second part B and the connecting screw 3 or the associated disc 5, compression of the damping element 10 in the longitudinal direction of the damping element 1 can be achieved.

[0088] Metal or thermoplastic is used as the material for sleeve 50. Preferably, the material is conductive, such as a thermoplastic material with or without fiber reinforcement, exhibiting conductive properties. Since, during subsequent use, a single sleeve 50 is attached to both the second component and a fastening element (e.g., a connecting screw or corresponding disc 5), the material is chosen such that sleeve 50 can withstand and transmit the generated forces.

[0089] Reliable assembly of the damping device 1 in the component opening of the first component A occurs via the shaft portion 30 of the damping element 10, which is configured with holes 40. This is because the shaft portions 30 of two identical damping elements 10 interact and engage with each other, holding the two identical damping elements 10 together by means of form fit and / or friction fit. Thus, the two damping elements 10 are secured to each other in a way that prevents them from being lost. In this document, these holes specifically provide enlarged abutment or contact surfaces for the remaining wall section 42, thereby improving the retention of the damping elements 10 between them.

[0090] This fastening is further supported by a single sleeve 50, which is at least partially disposed in the shaft portion 30 of each damping element 10. This is achieved by providing a radially inwardly projecting protrusion in the central first through-hole 12, particularly in the shaft portion 30. This ensures that the component damping element 10 and the sleeve 50 are fastened to each other in a way that prevents loss. Furthermore, especially when the sleeve 50 is pre-assembled in the damping element 10 before the damping element 10 is disposed in the opening of the first component A, further machining is facilitated and the damping device 1 can be machined automatically.

[0091] refer to Figure 10 and Figure 11 This describes establishing a component connection via damping device 1. For this purpose, two identical damping elements 10 are first provided for fixing in an opening of the first component A, such as a mounting flange of a pump that generates vibration or a cable channel. The material thickness of the first component A adjacent to the component opening is preferably between 1 mm and 3 mm. If only one sleeve 50 is used, the single sleeve 50 is arranged in one of the damping elements 10 in the first step, provided that no damping element 10 already includes the single sleeve 50. Subsequently, the damping element 10 prepared in this way has the single sleeve at least partially arranged therein, and this damping element 10 is positioned near the opening of the first component A. Here, the outer diameter of the shaft portion of the damping element 10 relative to the size of the opening in the first component A is such that the shaft portion 30 of the damping element 10 extends into the opening of the first component A. The length of the shaft portion 30 is preferably selected such that the end of the shaft portion 30 facing away from the head protrudes from or is at least flush with the opposite side of the first component A. This ensures a particularly strong fastening in the opening of the first component A, especially when it interacts with the second damping element 10.

[0092] Select the outer diameter D of the head of the damping element 10. AK The damping element 10 is positioned adjacent to the first opening and abuts against the first component A. The contact surface 24 formed in this way defines a contact plane at the first component A, which is perpendicular to the longitudinal axis of the damping device 1.

[0093] Once one of the two identical damping elements 10, having a shaft portion 30 extending into an opening in the first component A, has been arranged on the first component side, the other of the two identical damping elements 10 is arranged in a similar manner on the opposing second component side. The two damping elements 10 are constructed in the same way. Thus, the remaining wall segment 42 of one damping element 10 engages with the hole 40 of the other damping element 10, thereby establishing a form-fit and / or friction-fit connection between the damping elements 10. The first component A is arranged between the damping elements 10, particularly between the heads 14.

[0094] Because two identical damping elements 10 are used, the work of establishing component connections is reduced. Furthermore, workers do not need to pay attention to the correct arrangement of the damping elements 10, especially when there is no pre-assembled single sleeve 50 in the damping element 10. Therefore, the risk of incorrect assembly is also reduced in this way. In addition, automated assembly options are provided. As a result, the two damping elements 10 are thus fixed to each other due to the design of the shaft portion 30, with the first component A located alone therebetween. This means that in this state, the first component A is pre-assembled with a damping device 1, which is available in the component opening of the first component A.

[0095] After the damping device 1 is pre-assembled in this manner, a second component B is provided. This occurs at the same production location or at another production location, depending on the required process.

[0096] The opening of the second component B is aligned with the central first through hole 12 of the damping element 10. Then, the connecting screw 3, as a connecting element, is guided through the central first through hole 12 and engages with the fastening portion 7 for connecting the screw 3. The fastening portion 7, for example, includes internal threads and is provided in or adjacent to the second component B. For example, radial tolerance compensation can be achieved, such that even in the portion 20 with a reduced inner diameter, the inner diameter of the single sleeve 50 is larger than the outer diameter of the connecting screw 3 when using a single sleeve 50. This is particularly advantageous for the fastening of the two components A and B to each other (either by worker or automatically).

[0097] When the damping device 1 with a single sleeve 50 is tightened, in the initial state, the single sleeve 50 abuts against the axial undercut in the central first through hole 12. When the connecting screw 3 is now tightened in the second component, the compression of the corresponding damping element 10 provides a damping effect for axial and radial vibrations. This configuration clearly demonstrates that a releasable threaded connection can be achieved by the damping device 1, wherein, in the firmly connected state of the two components A and B, in particular, the single sleeve 50 abuts against the second component on one side and against the connecting screw 3 or the associated disc 5 on the other, thus creating a tightening block. Using a disc 5 with an outer diameter larger than the diameter of the opening in the first component has proven particularly advantageous in this regard. The reason is that, in this way, even in the event of a failure of the damping device 1, the first component A will not separate from the second component B. Furthermore, the force distribution applied to the damping device due to tightening is more uniform.

[0098] Figures 12 to 15An alternative embodiment of the damping element 110 and its use in the damping device 1 are shown. The damping element 110 differs from the damping element 10 described above in that the hole 40 does not form any undercut. Instead, the hole 40 extends parallel to the longitudinal axis of the damping element 110 and does not taper gradually. Otherwise, the damping element 110 is identical to the damping element 10. Therefore, its structure and the technical effects and advantages it can achieve can be referred to the above description.

[0099] Figure 16 Another alternative embodiment of the damping element 210 is shown. At the end of the shaft portion 30 facing away from the head, the damping element 210 has a radially outwardly projecting protrusion 38. This provides a locking structure for securing the damping element 210 in the opening of the first component A. In the assembled state of the damping device 1, the protrusion 38 of the damping element 210 is thus located on the same component side as the contact surface 34 of the other damping element 210. In doing so, the securing of the damping element 210, and therefore the securing of the damping device 1 in the component opening of the first component A, is further improved. Otherwise, the construction of the damping element 210 is consistent with that of the damping element 110.

[0100] Now for reference Figure 17 This section describes an embodiment of the connection method between a first component A and a second component B. In the first step A1, a first component A in which a damping device 1 is arranged is provided. In an alternative first step A2, the first component A and the damping device 1 are provided, with the damping device 1 arranged in an opening in the first component A. In the subsequent second step B, the second component B, having a second component opening, is arranged such that the second component opening is aligned with the first component opening. Finally, in step C, a connecting screw 3 is inserted, engaging with a fastening portion 7 in or near the second component B.

[0101] Finally, refer to Figure 18The diagram illustrates a schematic process for manufacturing the damping device 1. In the first step a, two identical damping elements 10, 110, and 210 are provided. Preferably, a material with a Shore A hardness between 40 and 80 is used as the material for the damping elements 10, 110, and 210. In the subsequent step b, the two damping elements 10, 110, and 210 are arranged such that the end of the shaft portion 30 of one damping element 10, 110, and 210 facing away from the head faces the end of the shaft portion 30 of the other damping element 10, 110, and 210 facing away from the head. In step c, the two damping elements 10, 110, and 210 aligned in this manner are now fastened together. Therefore, the lower sides of the heads 14 of two identical damping elements 10, 110, 210 face each other, with the first component A arranged therebetween. The two identical damping elements 10, 110, 210 can be connected and fastened to each other via the shaft portion 30 by means of form fit and / or friction fit.

[0102] Before, during, or after providing damping elements with identical structures in step a, a unique sleeve 50 is provided in step d and arranged in one of the damping elements 10, 110, 210, and then arranged in the remaining damping elements 10, 110, 210 in step e. In this way, two damping elements 10, 110, 210 with identical structures can be fastened to each other by a unique sleeve 50.

[0103] The damping elements 10, 110, and 210 in step a can be provided by injection molding. Alternatively, the damping elements 10, 110, and 210 can also be produced by vulcanization or extrusion. Generally, different methods are possible. On one hand, the damping elements 10, 110, and 210 and the single sleeve 50 can be arranged individually, and in step c, the single sleeve 50 is first inserted into one of the damping elements 10, 110, and 210 and then the remaining damping elements 10, 110, and 210 are inserted.

[0104] Alternatively, a single sleeve 50 is disposed in the injection mold, and one of the two damping elements 10, 110, 210 is produced by injection molding, i.e., the single sleeve 50 is correspondingly overmolded. In this way, the single sleeve 50 is directly disposed in the correct position within the damping elements 10, 110, 210, which eliminates the need for separately disposing of the single sleeve 50 within the damping elements 10, 110, 210. This further facilitates the production method. If the sleeve 50 is assumed to be made of thermoplastic, it can also be produced by injection molding. In this case, it is particularly preferred that the single sleeve 50 is produced in the same tooling, so that the damping elements 10, 110, 210 and the single sleeve 50 therein can be produced in a 2K injection molding process.

[0105] The second damping elements 10, 110, and 210 are also manufactured by injection molding, wherein there is no sleeve in the injection mold. In this case, assembly is performed such that, preferably, the damping elements 10, 110, and 210, each with a single pre-assembled sleeve 50, are at least partially arranged in the component opening until the underside of the head 14 is attached to the upper side of the component. The remaining damping elements 10, 110, and 210 are then inserted into the component opening from the other side of the first component A, causing the second damping elements 10, 110, and 210 to also engage with the single sleeve 50, and the underside of the head 14 of the second damping elements 10, 110, and 210 abuts against the opposite upper side of the first component A.

[0106] In a preferred embodiment of the manufacturing method, the sleeve 50 is made of metal or thermoplastic. In particular, the sleeve 50 is made of a conductive material, especially preferably a conductive thermoplastic with or without fiber reinforcement. By selecting the appropriate material, the damping device 1 is adapted to the desired application.

[0107] List of reference numerals 1. Damping device; 3. Connecting screw; 5. Disc; 7. Fastening part for connecting screw 3; 10. Damping element; 12. First through hole; 14. Head; 16. Protrusion; 18. Rib; 20. Part with reduced inner diameter; 22. Mark or label on head 14; 24. Contact surface; 30. Shaft portion; 32. Mark or label on shaft portion 30; 34. Bevel; 36. Locking nose; 38. Protrusion; 40. Hole; 42. Wall section; 50. Sleeve; 110. Damping element; 210. Damping element; A. First component; B. Second component; D. AK Head outer diameter, D I The inner diameter, H, of the first central through hole D The height of the damping element.

Claims

1. A damping device (1), the damping device (1) being fastened in an opening of a first component (A), and the damping device (1) enabling a damped connection between the first component (A) and a second component (B), the damping device (1) comprising: Two identical damping elements (10, 110, 210), wherein each damping element (10, 110, 210) comprises: Having a first outer diameter (D) AK ) head (14), Having a smaller outer diameter than the first outer diameter (D) AK The second outer diameter of the shaft (30) extending from the lower side of the head (14), and A central first through hole (12) is provided in the shaft portion (30). The shaft portion (30) includes a circumferential wall having a plurality of holes (40), such that The two identical damping elements (10, 110, 210) can be fastened to each other by means of the shaft (30) using form fit and / or friction fit, wherein the lower sides of the heads (14) are arranged opposite each other and the first component (A) is arranged therebetween. Each hole (40) has a circumferential extension adjacent to the lower side of the head (14), the circumferential extension of the hole (40) adjacent to the lower side of the head (14) being greater than the circumferential extension of the hole (40) at the end of the shaft portion (30) facing away from the head (14), thus having an undercut in the axial direction; and wherein, Each hole (40) gradually decreases in size from the lower side of the head (14) toward the end of the shaft (30) facing away from the head; The damping device (1) includes a single sleeve (50) having a central second through hole arranged in the central first through hole (12) of each damping element (10) by at least part friction fit connection and / or secure connection, such that the two structurally identical damping elements (10, 110) can be additionally fastened to each other by the single sleeve (50).

2. The damping device (1) according to claim 1, wherein each hole (40) extends axially toward the underside of the head (14) from one end of the shaft (30) facing away from the head (14).

3. The damping device (1) according to claim 1 or 2, wherein the holes (40) are evenly spaced apart from each other.

4. The damping device (1) according to claim 1 or 2, wherein, in the circumferential direction, the hole (40) at least partially includes an extension, the extension... a) The circumferential extension is smaller than that of the adjacent wall segments, so that the two damping elements (10, 110, 210) with identical structures can be fastened to each other by press fitting, or b) Consistent with the circumferential extension of the adjacent wall segment of the circumferential wall of the shaft portion (30).

5. The damping device (1) according to claim 1, wherein each damping element (10, 110, 210) includes a radially outer protrusion (16) in the head (14), wherein the protrusion extends parallel to the shaft portion (30).

6. The damping device (1) according to claim 5, wherein, Between the shaft portion (30) and the protrusion (16), a plurality of ribs (18) are provided on the lower side of the head (14).

7. The damping device (1) according to claim 1, wherein, When the damping device (1) is provided with the single sleeve (50), each damping element (10, 110) includes a plurality of radially inwardly projecting protrusions located in the central first through hole (12), which are frictionally engaged with the single sleeve (50).

8. The damping device (1) according to claim 1, 2, 5, 6 or 7, wherein, The central first through hole (12) includes a radially inward protrusion on the upper side adjacent to the head (14).

9. The damping device (1) according to claim 1, 2, 5, 6 or 7, wherein each damping element (10, 110, 210) has a Shore A hardness between 40 and 80 Shore A.

10. A first component (A) having a damping device (1) according to any one of claims 1 to 9, the damping device (1) being arranged in a component opening of the first component (A).

11. The first component (A) according to claim 10, wherein the length of the shaft portion (30) is selected such that when the head (14) abuts against one side of the first component (A), the end of the shaft portion (30) facing away from the head is at least flush with the opposite side of the first component (A).

12. A component connection comprising a first component (A) according to claim 11, a second component (B) having a second opening, and a connecting element, wherein, The connecting element extends through the damping device (1) and engages with a matching fastening portion (7) in or near the second component (B).

13. The component connection according to claim 12, wherein radial tolerance compensation is possible because the single sleeve (50) has an inner diameter larger than the outer diameter of the connecting element.

14. The component connection according to claim 12 or 13, wherein, The connecting element includes a head and a shaft, and a disk (5) is disposed between the head of the connecting element and the damping elements (10, 110, 210) of the damping device (1) arranged adjacent to it, wherein the outer diameter of the disk (5) is larger than the inner diameter of the opening of the first component (A).

15. A method for connecting a first component (A) and a second component (B), comprising the following steps: Step A1: Provide the first component (A) according to claim 10 in which the damping device (1) is arranged, or Step A2: Provide the first component (A) and the damping device (1) according to any one of claims 1 to 9, and arrange the damping device (1) in the opening of the first component (A), thereafter, Step B: Arrange a second component (B) having a second component opening aligned with the opening of the first component, and Step C: Insert the connecting element such that it engages with a suitable fastening portion (7) in or near the second component (B).

16. A method for producing the damping device (1) according to any one of claims 1 to 9, comprising the following steps: Step a: Provide two damping elements with identical structures (10, 110, 210). Step b: Arrange the two damping elements (10, 110, 210) such that the end of the shaft portion (30) of the first damping element (10, 110, 210) facing away from the head faces the end of the shaft portion (30) of the second damping element (10, 110, 210) facing away from the head. Step c: Fasten the two damping elements (10, 110, 210) together such that the two damping elements (10, 110, 210) with identical structures are fastened together by form fit and / or friction fit through the shaft (30), wherein the lower sides of the heads (14) are opposite each other and the first component (A) is arranged between the two damping elements (10, 110, 210) with identical structures.

17. The production method according to claim 16, further comprising the following steps: Step d: Provide the only sleeve (50), and Step e: First, the single sleeve (50) is placed in one of the two identical damping elements (10, 110, 210), and then placed in the remaining damping element (10) such that the two identical damping elements (10, 110, 210) can be additionally fastened to each other by the single sleeve (50), wherein the first component (A) is arranged between the two identical damping elements (10, 110, 210).

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