JP3203137U - Viscoelastic damper - Google Patents

Abstract

A viscoelastic damper for damping vibration between two components is provided. A viscoelastic damper includes a container element and a plunger element. The container element 2 comprises a positioning substrate 21 designed to be fixed to the first component, and the positioning substrate 21 comprises a container wall 22. The container wall 22 extends along the longitudinal direction X away from the positioning substrate 21 and surrounds the container chamber. The base of the container chamber is formed by the positioning substrate 21. The container chamber comprises an opening on the opposite side of the positioning substrate 21 and a viscous material 100 provided in the container chamber. The plunger element 3 includes a connection substrate 31 designed to be fixed to the second component, and the connection substrate 31 is arranged outside the container chamber at a distance from the container wall 22 in the longitudinal direction X. Is done. A plunger 32 is disposed on the connection board 31. The plunger 32 extends in the longitudinal direction X toward the positioning substrate 21 through the opening into the container chamber. [Selection] Figure 1

Description

  The present invention relates to a viscoelastic damper for damping vibrations between two components according to the preamble of claim 1.

  Known viscoelastic dampers are used to damp vibrations between the two components. For this purpose, the viscoelastic damper is fixed to both components and is designed to convert vibration energy into heat in order to damp vibrations between the components. The known viscoelastic damper therefore comprises a container element with a positioning substrate. A container wall is disposed on the positioning substrate, and the container wall extends in a longitudinal direction away from the positioning substrate and surrounds the container chamber. The base of the container chamber is formed by the positioning substrate. The container element may be fixed to the first component via the positioning substrate, for example, by screwing or pushing into the component. A viscous substance is disposed in the container chamber whose base is formed by the positioning substrate and whose side wall is formed by the container wall. The viscous material has a low viscosity in order to efficiently suppress vibration. The container chamber is designed as an open chamber having an opening on the opposite side of the positioning substrate. The known viscoelastic damper further comprises a plunger element having a connection substrate. The connection substrate is disposed outside the container chamber at a distance from the container wall in the vertical direction, and a plunger is disposed on the connection substrate. The plunger extends through the opening into the container chamber along a longitudinal direction from the connection substrate to the positioning substrate, and is partially disposed in the viscous material. The connection board is designed to be fixed to the second component. Since the plunger disposed on the connection substrate partially extends into the container chamber and into the viscous material, vibrations generated between the two components are deformed by the viscous material. Then, the vibration energy is transferred to the viscous material through the plunger so as to convert it into heat. Since the connection substrate is spaced apart from the container wall in the vertical direction, and to suppress vibration, a certain amount of play is provided between the plunger and the container wall in a direction perpendicular to the vertical direction. Since known viscoelastic dampers must have a passage between the plunger, the container wall and the connection substrate, pollutants from the environment pass through the passage through the container. Invade the room. This can degrade the operability of the viscoelastic damper or lead to complete malfunction of the viscoelastic damper. In order to prevent such effects, known viscoelastic dampers are provided with bellows arranged between the plunger and the container wall. However, such bellows are quite susceptible to damage. This is because such a bellows receives all vibrations occurring between the two components without damping, thereby significantly reducing the life of such bellows. In addition, viscoelastic dampers are usually used in harsh environments and high temperatures, which also shortens the life of such bellows. Thus, known viscoelastic damper bellows are often perforated or cracked. For this reason, protection of the said container chamber from the environment by such a bellows cannot be guaranteed, and the viscoelastic damper as a whole is greatly deteriorated by contaminants, and its operability is lowered.

  The present invention relates to an objective technical problem of providing a viscoelastic damper for damping vibrations between two components, which at least partially improves the above-mentioned inconvenience of known viscoelastic dampers.

  As a solution to this objective technical problem, the present invention proposes a viscoelastic damper having the characteristics described in claim 1. The viscoelastic damper includes a container element having a positioning substrate designed to be attached to a first component, and a container wall is disposed on the positioning substrate. The container wall extends along a longitudinal direction away from the positioning substrate and surrounds the container chamber. The base of the container chamber is formed by the positioning substrate, and the container chamber has an opening on the side surface opposite to the positioning substrate. It is important that the positioning substrate and the container wall form a container chamber that can hold the viscous material without loss. Thus, the positioning substrate forms the lower surface of the container chamber and defines the movable range of the viscoelastic damper. The positioning substrate and / or the container wall may have, for example, a circular, square, or polygonal cross section. Each cross section in the transverse direction always extends vertically in the longitudinal direction. The container wall is formed as a kind of hollow cylinder, and the axis of the hollow cylinder extends along the longitudinal direction. A viscous substance is disposed in the container chamber of the container element. The volume of the container chamber determined by the positioning substrate and the extending portion of the container wall from the positioning substrate to the opening is at least 50% so as to provide particularly good vibration damping, In particular, the viscous material may be filled from 50% to 95%. The viscoelastic damper according to the present invention further includes a plunger element having a connection substrate. The connection substrate is disposed outside the container chamber at a distance from the container wall in the vertical direction. A plunger is disposed on the connection substrate. The plunger extends from the connection substrate along the longitudinal direction toward the positioning substrate, and extends through the opening into the container chamber. In the working position of the viscoelastic damper, the plunger is arranged in particular in the longitudinal direction from the positioning substrate and is partly arranged in the viscous substance. The plunger may be made of a solid material, for example. For example, the plunger may be formed as a kind of hollow cylindrical body. The plunger may have, for example, a vertical hole and / or a horizontal hole. By providing the plunger in the form of a kind of hollow cylinder and / or by providing a hole in the plunger, particularly good damping properties of the viscoelastic damper are provided. This is because the surface of the plunger effective for damping is particularly large in this case. In particular, the plunger may have a circular, square or polygonal cross section, and preferably has a cross section having the same shape as the container wall.

  According to the present invention, a protective wall is disposed on the connection board. The protective wall extends in a longitudinal direction away from the connection substrate over a longitudinal section along the container wall outside the container chamber. The protective wall completely surrounds the container wall in a longitudinal section. Accordingly, the cross section of the container wall is completely arranged in the cross section of the protective wall in the longitudinal cross section. The protective wall may be formed as a kind of hollow cylindrical body, for example. The protective wall may have, for example, a quadrangle, a circle or a polygon, in particular a cross section having the same shape as the container wall. Since the protective wall extends away from the connection substrate and extends across a longitudinal section along the container wall outside the container chamber, the protective wall efficiently removes the container chamber from contaminants from the environment. Protect. For this purpose, the protective wall may be made of an inflexible material such as, for example, metal or hard plastic. The designers do not need to connect the protective wall directly to the container wall, but it is sufficient to connect the protective wall indirectly to the container wall via the viscous material. It has been found that the wall sufficiently protects the container chamber from environmental contaminants. Thus, the protective wall is not permanently exposed to traction and pressing forces generated by vibration between the two components in which the container element and the plunger element are respectively arranged. The protective wall extends over a longitudinal section along the container wall which is at least one quarter, in particular at least half, in particular between one quarter and three quarters, of the length of the container wall in the longitudinal direction. It is particularly advantageous to provide the length of the protective wall in the longitudinal direction. Thereby it is ensured on the one hand that the protective wall is not in direct contact with the positioning substrate, and on the other hand sufficient to prevent contamination from the environment from entering the container chamber along the container wall. It is guaranteed that the protective wall extends along a large longitudinal section. In this regard, the relative adaptability of the values of the elements of the viscoelastic damper always defines the arrangement of the viscoelastic damper at its working position. In its working position, a plunger is disposed in the viscous material so that the viscoelastic damper dampens vibration between two components, and the container element is spaced from the plunger element. Be placed. The first component is secured to the container element and the second component is secured to the plunger element.

  It must be shown that it is particularly advantageous for the length of the protective wall in the longitudinal direction to be at least half, in particular at least three-quarters, of the extended part of the plunger in the longitudinal direction. The inventors have recognized that the dependence of the plunger length on the length of the protective wall is particularly important. Because both the protective wall and the plunger extend from the connection board in the longitudinal direction toward the positioning board, on the one hand, the distance between the plunger and the positioning board, and on the other hand, the protective wall and the positioning board It is advantageous to ensure the distance between the substrates, the prominent penetration of the plunger into the viscous substance arranged in the container chamber, and the prominent in the longitudinal direction between the container wall and the protective wall This is because the overlap is advantageous and therefore provides good vibration damping and good protection of the container chamber at the same time.

  In one advantageous embodiment, the connection substrate, the plunger element and the protective wall are made of metal. In particular, the plunger element and / or the protective wall are welded to the connection substrate. The plunger element and / or the protective wall may be formed by a part of a tube, for example. By providing each element of metal, a particularly rugged and durable viscoelastic damper can be realized. In particular, since the container wall may be welded to the positioning substrate, it is advantageous that the positioning substrate and / or the container wall is made of metal.

  In one advantageous embodiment, the plunger is arranged movably laterally in the container wall so as to be movable with the first play laterally with respect to the container wall. The container wall is movably arranged laterally in the protective wall so as to be movable in a second play relative to the protective wall in the lateral direction. The ratio of the first play and the second play may be between 0.8 and 1.2. The plunger is regulated in the lateral direction in the container wall, and the container wall is regulated in the lateral direction in the protective wall. The presence of each play in the lateral direction between the plunger and the container wall on the one hand and between the container wall and the protective wall on the other hand is from the plunger to the container wall or from the container wall to the container wall. This is particularly advantageous because no vibration is directly transmitted to the protective wall and it is ensured that the vibration between the container element and the plunger element is always damped by the viscous substance. In order to avoid direct transmission of vibration between the container wall and the plunger on the one hand and vibration between the container wall and the protective wall on the other hand, the inventors It has been recognized that it is particularly advantageous to set the first play between the two according to the second play between the container wall and the protective wall.

  In a further advantageous embodiment, the cross section of the protective wall in at least a defined longitudinal cross section has the same symmetry as the cross section of the container wall and / or the cross section of the plunger. In particular, a respective correspondence of the symmetry of the cross-sectional view may be provided along the entire longitudinal section, in which the protective wall extends along the container wall in the longitudinal direction. For example, symmetry defines rotational symmetry or axial symmetry of the same axis. By having the same symmetry in the cross section, the efficient vibration suppression that leads to the relative movement of the container element and the plunger element with respect to each other can be performed with respect to the relative movement in various directions. Is particularly guaranteed through the viscous medium.

  In one advantageous embodiment, the viscoelastic damper comprises a spring hose. The spring hose is fixed to the container wall by surrounding the container wall in a circumferential direction at a fixing portion extending along the vertical direction. The spring hose exerts a spring force on the connection board in a direction along the vertical direction and in a direction from the positioning board toward the connection board. In particular, the spring hose is in contact with the side surface of the connection board facing the positioning board. Since the spring hose is fixed to the container wall and surrounds the container wall in the circumferential direction at the fixing portion, and simultaneously the spring hose exerts a spring force on the connection board, the spring hose is Small particles such as dust can be prevented from entering the container chamber in a particularly efficient manner. In one embodiment, the side surface of the spring hose facing the connection substrate is in contact with the side surface of the connection substrate facing the positioning substrate. In one embodiment, an attachment ring is disposed at an end of the spring hose facing the connection board, and the spring hose presses the attachment ring against the connection board with a spring force. Damage to the spring hose due to vibration, such as damage caused by relative movement of the spring hose relative to the connection substrate due to vibration between the container element and the plunger element, is particularly efficiently reduced by the mounting ring. This is based on the fact that the mounting ring can prevent the friction of the spring hose directly on the connection board. Furthermore, the mounting ring can provide a better seal of the container chamber. In any case, the spring hose exerts a spring force on the connection substrate, and the connection between the spring hose and the connection substrate directly or indirectly via a mounting ring is very small particles. Can provide very good protection of the container chamber against contaminants such as

  In one embodiment, the cross section of the positioning substrate has a fixing portion and protrudes across the cross section of the container wall, and the cross section of the connection substrate has a connection portion and protrudes across the cross section of the protective wall. Since the cross section of the positioning substrate protrudes across the cross section of the container wall and the cross section of the connection substrate protrudes across the cross section of the protective wall, the connection substrate and the positioning substrate are firmly fixed by their fixing portions and connection portions, And it can fix to each component easily. In one embodiment, for this purpose, a recess is provided in the fixing part of the positioning board and / or the connection part of the connection board. In one embodiment, the fixed portion and the connection portion are engaged by a fastening mechanism.

  In one embodiment, the first threaded bolt is disposed on the positioning substrate in the fixing portion, and the thread of the first threaded bolt is directed in a vertical direction toward the connection substrate. The second threaded bolt is disposed on the connection board at the connection portion, and the thread of the second threaded bolt is oriented in the vertical direction toward the positioning board. The first threaded bolt and the second threaded bolt face each other in the longitudinal direction. The first threaded bolt extends from the positioning substrate toward the connection substrate, and the second threaded bolt extends from the connection substrate toward the positioning substrate. The first threaded bolt has a thread pitch toward the connection substrate, and the second threaded bolt has a thread pitch toward the positioning substrate. In particular, both threaded bolts may extend along the same straight line in the longitudinal direction. The threaded bolt allows a protective element for fixing the viscoelastic damper during movement to be easily and safely fixed to the viscoelastic damper. For example, a bent metal sheet may be used as the protective element. The length of the bent metal sheet in the vertical direction corresponds to a predetermined and desired distance between the connection board and the positioning board. The end of the bent metal sheet is bent perpendicularly to the longitudinal direction, and has a recess in which the threaded bolt can be respectively arranged. The end portions of the protection elements can be fixed to the connection board and the positioning board by nuts or bolts, respectively, and in each situation of movement, the distance between the connection board and the positioning board can be fixed. it can. For this purpose, the threaded bolt can be welded, for example, to the connection board and / or the positioning board.

  In one embodiment, the positioning substrate comprises a plurality of notches, the notches extending in a first lateral direction over a first length and with respect to the first lateral direction over a second length. And stretch in a second transverse direction that is vertical. The first length of the notch is at least 1.5 times longer than the second length of the notch, and the notch has a particularly elliptical or rectangular cross section. Further, the connection board may have a plurality of holes in the connection portion, the holes extending in a third lateral direction over a first length and a third lateral direction over a second length. Stretch in a fourth transverse direction that is perpendicular to. The first length of the hole is at least 1.5 times the second length of the hole, and the hole has a particularly elliptical or rectangular cross section. The viscoelastic damper can be easily fixed to the two components by the extended hole and the extended notch. It is due to their elongated holes and elongated notches that the container element and the plunger element are in corresponding fixing devices provided in the component, for example screw holes provided in the component. This is because relative movement is possible within a specific movable range. It is particularly advantageous to arrange the holes and the notches so that the first lateral direction is parallel to the fourth lateral direction and the second lateral direction is parallel to the third lateral direction. . With such an arrangement, the container element and the plunger element are free when the container element and the plunger element are fixed to the corresponding fixing devices provided in the two components via notches and holes. Can move relative to each other at two angles. If the fixing devices of the two components are spaced apart from each other within a certain range of resistance, it is easier to fix the viscoelastic damper to the two components.

  In one embodiment, a scale is disposed on a side surface of the container wall that extends outward from the interior of the container chamber. The scale extends along the longitudinal direction across the scale portion. The protective wall ends within the scale portion along the longitudinal direction. The scale allows easy measurement of the penetration depth of the plunger contained in the viscous material in the container chamber. This is because the position related to the vertical direction in which the protective wall ends within the range of the scale portion clearly indicates the penetration depth.

  The present invention further refers to the use of an inventive viscoelastic damper in a specific working position, in particular to damping vibrations between two components.

1 is a schematic cross-sectional view of one embodiment of a viscoelastic damper according to the present invention. 2 is a diagrammatic representation showing details of the embodiment according to FIG.

  Hereinafter, the present invention will be described based on one embodiment with reference to the accompanying drawings.

  In FIG. 1, one embodiment of a viscoelastic damper 1 is depicted by a cross-sectional view, with the longitudinal direction X on the cross-section. The viscoelastic damper 1 includes a container element 2 and a plunger element 3. The container element 2 includes a positioning substrate 21 and a container wall 22. The container wall 22 is disposed on the positioning substrate 21 and extends along the longitudinal direction X away from the positioning substrate 21. The positioning substrate 21 and the container wall 22 together form a container chamber in which the viscous material 100 is disposed. The volume of the container chamber is filled with the viscous material 100 to about 70%.

  The plunger element 3 of the viscoelastic damper 1 is arranged to face the container element 2 at a distance from the container element 2 in the longitudinal direction X. The plunger element 3 includes a connection substrate 31, a plunger 32 and a protective wall 33. The plunger 32 and the protective wall 33 are disposed on the connection board 31 and extend along the longitudinal direction X away from the connection board 31. As can be seen from FIG. 1, the container wall 22 needs to extend from the positioning substrate 21 toward the connection substrate 31 for the operability of the viscoelastic damper 1. The wall 33 extends from the connection substrate 31 toward the positioning substrate 21. An inventive arrangement of the viscoelastic damper 1 is realized here, in which the plunger 32 is arranged in the viscous material 100 and the protective wall 33 extends over a longitudinal section along the container wall 22, It extends outside the container chamber. The container element 2 and the plunger element 3 are spaced apart from each other, and the transmission of vibration between the two components of the viscoelastic damper 1 takes place only through the viscous material 100. Although not shown in the sectional view according to FIG. 1, the protective wall 33 completely surrounds the container wall 22 in the longitudinal cross section, and therefore the protective wall 33 leads to contamination of the viscous material 100. The container chamber is efficiently protected by preventing entry of contaminants from the environment into the container chamber.

  In FIG. 1, the viscoelastic damper 1 in the working position is shown. In this working position, the viscoelastic damper 1 is positioned on the positioning substrate 21, and the positioning substrate 21 and the container wall 22 both hold the viscous material 100 inside the container chamber without loss. . In the working position of the viscoelastic damper 1, the plunger element 3 and the container element 2 are always arranged spaced apart from each other along the longitudinal direction X, and the plunger 32 is located inside the viscous material 100. It is arranged at a portion in the longitudinal direction X. For this reason, the vibration between the container element 2 and the plunger element 3 is efficiently damped by the viscoelastic damper 1. However, the viscoelastic damper 1 may be in various working positions, and in different working positions, the container element 2 may be in a different position corresponding to the plunger element 3. However, the above-described state is always effective at each work position. This is because the above-described state is necessary to guarantee the operability of the viscoelastic damper 1 of the present invention. The definition of the working position of the viscoelastic damper 1 is generally valid in the embodiment of the viscoelastic damper 1. In each possible working position, the protective wall 33 of the viscoelastic damper 1 according to the invention spans a longitudinal section along the container wall 22 and completely encloses the container wall 22 in the longitudinal section. Placed outside.

  In the disclosed embodiment according to the present invention, the plunger 32 is disposed in the container wall 22 in a lateral direction perpendicular to the longitudinal direction X together with a first play. The container wall 22 in the transverse direction with respect to the longitudinal direction X is arranged in the protective wall 33 together with a second play. The first play substantially corresponds to the second play. For this reason, a very good vibration damping property of the viscoelastic damper 1 is assured even when the plunger element 3 is moved corresponding to the container element 2 from the position where the plunger element 3 is represented. This is because the container element 2 is still spaced from the plunger element 3 by the first and second play. Furthermore, in the embodiment shown, the protective wall 33, the container wall 22 and the plunger 32 are designed such that these elements extend parallel to each other at each working position of the viscoelastic damper 1, The longitudinal section is designed to have a section having the same symmetry. In the present embodiment, the cross section is a quadrangle. The identity of the cross-sectional symmetry makes it possible to make the most of the above-mentioned play between the elements that provide good damping of the viscoelastic damper 1. Further, the plunger 32 has a breathing hole. The breathing hole is provided to prevent the occurrence of pressurization or depressurization in the container chamber or in the plunger 32 during relative movement between the container element 2 and the plunger element 3 along the longitudinal direction X. . It is generally advantageous to arrange the breathing hole within a third of the extension of the plunger 32 adjacent to the connection substrate 31 in the longitudinal direction X.

  The viscoelastic damper 1 further includes a spring hose 4 that completely surrounds the container wall 22 with a fixing portion fixed in the longitudinal direction X. The spring hose 4 is fixed to the container wall 22 by a clamp 5. The spring hose 4 is designed to have a spring property in the longitudinal direction X. The spring hose 4 at each possible working position of the viscoelastic damper 1 exerts a spring force in the longitudinal direction X on the connection board 31. In the present embodiment, the attachment ring 6 is arranged at the end of the spring hose 4 adjacent to the connection substrate 31 in the longitudinal direction X. The spring hose 4 surrounds the attachment ring 6 along a portion in the longitudinal direction X, and the spring hose 4 is further fixed to the attachment ring 6 by a clamp 5. Due to the spring force of the spring hose 4, the attachment ring 6 is pressed against the side surface of the connection substrate 31 facing the positioning substrate 21 at each working position of the viscoelastic damper 1. The spring hose 4 efficiently protects the container chamber against entry of contaminants from the environment of the viscoelastic damper 1. The spring hose 4 itself is protected from the environment by the strong protective wall 33 so as to be protected from damage. In this embodiment, the cross section of the positioning substrate 21 has a fixing portion and protrudes across the cross section of the container wall 22, and the cross section of the connection substrate 31 has a connection portion and protrudes across the cross section of the protective wall 33. In the fixing portion, the positioning substrate 21 includes two first threaded bolts 23. The first threaded bolt is disposed so as to face the two second threaded bolts 34 disposed at the connection portion of the connection board 31. A pair of the first threaded bolt 23 and the second threaded bolt 34 facing each other extends along one identical straight line along the longitudinal direction X. As shown in FIG. 2, the threaded bolts 23 and 34 have a relative position between the container element 2 and the plunger element 3 that may be required, for example, during movement or fixation of the viscoelastic damper 1. In order to fix, the protection element 8 is designed to be easily fixed to the connection board 31 and the positioning board 21. As can be seen from the combination of FIG. 1 and FIG. 2, the protective element 8 extends over a portion in the longitudinal direction X such that the protective element 8 has ends at both ends extending perpendicular to the longitudinal direction X. It may be designed as a curved metal sheet that is stretched and bent at an end perpendicular to the longitudinal direction X. The end of the protective element 8 has a recess designed to receive the threaded bolts 23 and 34, respectively, so that the protective element 8 can be pressed against the threaded bolts 23 and 34 from the outside. . In this embodiment, the protection element 8 is pressed against the connection substrate 31 and the positioning substrate 21 by the disk 10 and the hexagon nut 9 that are attached to the threaded bolts 23 and 34 by screws. In FIG. 1, only one protective element 8 is shown. Of course, in order to safely fix the container element 2 to the plunger element 3 during the movement of the viscoelastic damper 1, the protective element 8 is attached to each pair of the first threaded bolt 23 and the second threaded bolt 34. It is advantageous to arrange them between. The threaded bolts 23 and 34 allow the protective element 8 to be arranged particularly easily in a desired manner and also allows the protective element 8 to be fixed as well as removed. That is, by loosening the protective element 8, the viscoelastic damper 1 can be easily fixed, and can be disposed between two components at a desired working position. Further, as can be seen from FIG. 1, the fixing portion is provided with a notch 24, and the connection portion is provided with a hole 35. The notch 24 has a first notch length in the first lateral direction and a second notch length perpendicular to the first lateral direction. The hole 35 has a first hole length in a third lateral direction and a second hole length in a fourth lateral direction perpendicular to the third lateral direction. The first notch length is about 1.5 times the second notch length, and the first hole length is about 1.5 times the second hole length. The first lateral direction is parallel to the fourth lateral direction, and the second lateral direction is parallel to the third lateral direction. In the cross-sectional view of FIG. 1, the notch 24 is indicated by a first notch length and the hole 35 is indicated by a second hole length. Therefore, when the positioning substrate 21 is fixed to the first component by a fixing device extending over the notch 24 such as a screw, and the connection to the second component by a fixing device extending over the hole 35 such as a screw. When the substrate 31 is fixed, the container element 2 and the plunger element 3 are relatively moved within a specific movable range unless the fixing device firmly presses the positioning substrate 21 and the connection substrate 31 against each component. Can move. The notch length and the hole length are shorter than the play between the plunger 32 and the container wall 22 as well as the play between the container wall 22 and the protective wall 33, respectively. By providing the notches 23 and the holes 35 respectively, the viscoelastic damper 1 can be easily fixed to the components, in particular the fixing device provided in the two components. Are also effective if they are spaced from each other within a certain range of resistance. In order to fix the viscoelastic damper 1 to the two components, a specific relative movement between the container element 2 and the plunger element 3 is required in the first and / or second lateral direction. Become.

  In the present embodiment, the viscoelastic damper 1 further includes a scale 7, and the scale 7 is disposed outside the container wall 22. Therefore, the scale 7 is disposed on the side surface of the container wall 22 that extends outward from the container chamber. The scale 7 extends over the scale portion along the longitudinal direction X. The protective wall 33 ends in each working position where the viscoelastic damper 1 can dampen vibrations between two components in the extension part of the scale part along the longitudinal direction X. Therefore, the penetration depth of the plunger 32 in the viscous material 100 and the distance between the plunger 32 and the protective wall 33 from the positioning substrate 21 are easily measured by the scale 7. Can do. At that time, the protective wall 33 is used as a display. In this embodiment, the scale for this purpose has scales spaced from each other along the longitudinal direction X, which is generally advantageous for the viscoelastic damper according to the invention. In particular, it is advantageous to provide specific numerical values on at least some of the scales, for example the depth of penetration can be displayed.

DESCRIPTION OF SYMBOLS 1 Viscoelastic damper 2 Container element 3 Plunger element 4 Spring hose 5 Clamp 6 Mounting ring 7 Scale 8 Protection element 9 Hexagon nut 10 Disc 21 Positioning board 22 Container wall 23 First threaded bolt 24 Notch 31 Connection board 32 Plunger 33 Protection wall 34 Second threaded bolt 35 Hole 100 Viscous material X Longitudinal direction

Claims (14)

A viscoelastic damper 1 for damping vibrations between two components,
A container element 2 and a plunger element 3;
The container element 2 comprises a positioning substrate 21 designed to be fixed to a first component, a container wall 22 is provided on the positioning substrate 21, and the container wall 22 is separated from the positioning substrate 21. Extending along the vertical direction X to surround the container chamber, the base of the container chamber is formed by a positioning substrate 21, the container chamber having an opening on the opposite side of the positioning substrate 21, Is provided with a viscous material 100,
The plunger element 3 comprises a connection substrate 31 designed to be fixed to a second component, the connection substrate 31 being spaced from the container wall 22 in the longitudinal direction X, and in the container chamber. A plunger 32 is arranged on the outside of the connection substrate 31, and the plunger 32 extends toward the positioning substrate 21 in the longitudinal direction X through the opening of the container chamber. The plunger 32 is partially disposed inside the viscous material at a distance from the positioning substrate 21;
A protective wall 33 is disposed on the connection substrate 31, and the protective wall 33 extends along the longitudinal direction X away from the connection substrate 31 over a longitudinal section along the container wall 22 outside the container chamber, The viscoelastic damper 1, wherein the protective wall 33 completely surrounds the container wall 22 in the longitudinal section. The viscoelastic damper 1 according to claim 1,
The viscoelastic damper, wherein the protective wall 33 extends along the longitudinal direction in the longitudinal direction over a length of at least half of the extension portion of the plunger 32, particularly three quarters. The viscoelastic damper 1 according to any one of claims 1 and 2,
The connection board 31, the plunger element 3 and the protective wall 33 are made of metal, and in particular, the plunger element 3 and / or the protective wall 33 are welded to the connection board 31. Elastic damper 1. It is the viscoelastic damper 1 as described in any one of Claims 1-3,
The plunger 32 is arranged to move laterally within the container wall 22 so as to be movable relative to the container wall 22 with a first play in the lateral direction;
The container wall 22 is arranged so as to be movable laterally within the protective wall 33 so as to be movable with respect to the protective wall 33 along with a second play in the lateral direction,
Viscoelastic damper 1 characterized in that the ratio between the first play and the second play is set between 0.8 and 1.2. It is the viscoelastic damper 1 as described in any one of Claims 1-4,
The viscoelastic damper 1 is characterized in that the cross section of the protective wall 33 has the same symmetry as the cross section of the container wall 22 and / or the cross section of the plunger 32 in at least a defined longitudinal cross section. It is the viscoelastic damper 1 as described in any one of Claims 1-5,
A fixing portion extending along the vertical direction includes a spring hose 4 that surrounds the container wall 22 in the circumferential direction. The spring hose 4 is fixed to the container wall 22, and extends vertically from the positioning substrate 21 toward the connection substrate 31. The viscoelastic damper 1 is characterized in that a spring force is exerted on the connection board 31 along a direction, and the spring hose 4 is in contact with a side surface of the connection board 31 facing the positioning board 21 in particular. The viscoelastic damper 1 according to claim 6,
A mounting ring 6 is disposed at an end of the spring hose 4 facing the connection board 31, and the spring hose 4 presses the mounting ring 6 against the connection board 31 by the spring force. Viscoelastic damper 1 It is the viscoelastic damper 1 as described in any one of Claims 1-7,
The viscoelastic damper 1 is characterized in that a cross section of the positioning substrate 21 having a fixing portion extends over a cross section of the container wall 22, and a cross section of the connection substrate 31 having a connection portion extends over a cross section of the protective wall 33. . The viscoelastic damper 1 according to claim 8,
A first threaded bolt 23 is disposed on the positioning substrate 21 in the fixing portion, and its thread is directed in a vertical direction toward the connection substrate 31, and a second threaded bolt 34 is disposed on the connection substrate 31 in the connection portion. The viscoelastic damper 1 is characterized in that the screw thread is arranged in a longitudinal direction toward the positioning substrate 21 and the first threaded bolt 23 and the second threaded bolt 34 face each other in the longitudinal direction. The viscoelastic damper 1 according to any one of claims 8 and 9,
In the fixing portion, the positioning substrate 21 includes a plurality of cutouts 24, the cutouts 24 extend in the first lateral direction over the first cutout length, and extend in the first lateral direction over the second cutout length. Extending in a second transverse direction perpendicular to the first cutout, the first cutout length being at least 1.5 times the second cutout length, the cutout 24 being in particular an ellipse or a rectangle A viscoelastic damper 1 having the following cross section. It is the viscoelastic damper 1 as described in any one of Claims 8-10,
In the connection portion, the connection substrate 31 includes a plurality of holes 35, the holes 35 extend in the third lateral direction over the first hole length, and are perpendicular to the third lateral direction over the second hole length. Stretching in the fourth lateral direction, the first hole length is at least 1.5 times the second hole length, and the hole 35 has a particularly elliptical or rectangular cross section. Elastic damper 1. The viscoelastic damper 1 according to claim 10 and 11,
The viscoelastic damper 1 wherein the first lateral direction is parallel to the fourth lateral direction and the second lateral direction is parallel to the third lateral direction. It is the viscoelastic damper 1 as described in any one of Claims 1-12,
The scale 7 is disposed on the side surface of the container wall 22 that extends from the inside of the container chamber to the outside, the scale 7 extends over the scale portion along the vertical direction, and the protective wall 33 in the vertical direction is within the range of the scale portion. Viscoelastic damper 1 characterized by ending in. It is use of the viscoelastic damper 1 as described in any one of Claims 1-13,
The length of the longitudinal section in the longitudinal direction is at least a quarter of the extending portion of the container wall 22 in the longitudinal direction, and the protective wall 33 extends along the longitudinal section and the container wall 22 outside the container chamber. Use of viscoelastic damper 1 extending along

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