Damping medium for use in a damper of a fitting

Abstract

The present invention relates to a damping medium (1) for use in a damper (2) for use in an accessory (3), preferably a furniture accessory, the damper (2) having a damper housing (4), at least one damping chamber (5) for containing the damping medium (1) and a piston (6) movable in the damping chamber (5) relative to the damper housing (4), the damping medium (1) being a mixture having a first fluid (7), preferably a first liquid and at least one second fluid (8), preferably a second liquid, wherein the at least one second fluid (8) in pure substance form before mixing with the first fluid (7) has, under otherwise identical conditions, a higher zero-shear viscosity than the first fluid (7) in pure substance form before mixing with the at least one second fluid (8), preferably 10 to 200,000 times higher, particularly preferably 100 to 10,000 times higher.

Description

Technical Field

[0001] The present invention relates to a damping medium as described in the preamble of claim 1, a damper having such a damping medium, an accessory having such a damper and / or such a damping medium, an arrangement system having such an accessory, and a method for manufacturing such a damping medium. Background Technology

[0002] Damping media are known from existing technologies, such as DE 40 19 150 A1. Such damping media can be used in door closers, specifically for the damping motion of doors. Damping of other objects (e.g., windows, cabinet doors, panels, etc.) is also conceivable.

[0003] Damping media must meet a variety of challenges. For example, damping media should possess specific solubility, emulsion stability, environmental compatibility, shear properties, and / or similar characteristics.

[0004] In particular, the shear characteristics of the damping medium should be as ideal as possible for the corresponding application. Importantly, the viscosity and shear characteristics of the damping medium should allow for ideal damping behavior at different shear rates while avoiding or at least reducing leakage in the damping system.

[0005] To adjust the shear properties of damping media, fillers are sometimes added, but these fillers do not provide the desired results. Summary of the Invention

[0006] Therefore, the object of the present invention is to at least partially overcome the disadvantages of the prior art and to provide an improved damping medium relative to the prior art, which is particularly characterized by having adaptable shear characteristics at different shear rates. The object also aims to provide a damper having such a damping medium, an accessory having such a damper and / or such a damping medium, an arrangement system having such an accessory, and a method for manufacturing such a damping medium.

[0007] This task is solved by the features of claims 1, 12, 13, 14 and 15.

[0008] This task is solved by a damping medium according to claim 1, namely, a damping medium for use in a damper, preferably a furniture accessory, wherein the damper has a damper housing, at least one damping chamber for containing the damping medium, and a piston movable relative to the damper housing within the damping chamber, the damping medium being a mixture having a first fluid, preferably a first liquid, and at least one second fluid, preferably a second liquid, wherein the at least one second fluid in pure substance form has a zero-shear viscosity, all other things being equal, that of the first fluid in pure substance form before mixing with the at least one second fluid before mixing with the at least one second fluid, preferably 10 to 200,000 times higher, particularly preferably 100 to 10,000 times higher.

[0009] The technical advantage of damping media is that, by using two fluids with significantly different zero-shear viscosities, the desired shear characteristics of a mixture can be produced.

[0010] For example, if two fluids with very similar zero-shear viscosities are mixed, the zero-shear viscosity and / or shear characteristics of the mixture will not be significantly different from those of the individual fluids. Therefore, by mixing these fluids, only a very limited range of viscosity can be achieved and adjusted in the mixture. Conversely, if fluids with significantly different zero-shear viscosities are mixed, mixtures with a wide variety of zero-shear viscosities and / or shear characteristics can be produced, which are more suitable for their respective desired applications, preferably at different shear rates.

[0011] Accessories may be, for example, pull-out guides with two or more rails or hinges with two or more accessory plates.

[0012] A mixture is a substance composed of at least two pure substances.

[0013] A pure substance is a substance composed of only one chemical compound or only one chemical element.

[0014] In this application, “viscosity” (represented by the Greek letter η) is understood as the dynamic shear viscosity of a fluid, specifically the dynamic shear viscosity of a liquid or gas.

[0015] In this application, "zero shear viscosity" η 0 This can be understood as when the shear rate is 0 s -1 The dynamic shear viscosity of a fluid (specifically, a liquid or a gas).

[0016] The statement that "the at least one second fluid, in its pure substance form before mixing with the first fluid, has a higher zero-shear viscosity than the first fluid in its pure substance form before mixing with the at least one second fluid, preferably 10 to 200,000 times higher, and particularly preferably 100 to 10,000 times higher" is illustrated below. This example is for better understanding only and should not be construed as limiting: Mixture AB consists of fluid A and fluid B, which are mixed together to prepare mixture AB. Fluid A is pure substance A before being mixed with fluid B. rein and has zero shear viscosity η before mixing with fluid B. A 0 Fluid B was also a pure substance B before it was mixed with fluid A. rein and has zero shear viscosity η before being mixed with fluid A. B 0 By mixing pure substance A rein and pure substance B rein The resulting mixture AB has a zero shear viscosity η AB 0 In the damping medium of this invention, pure substance B rein The zero-shear viscosity η of (i.e., the at least one second fluid B in pure substance form before being mixed with at least one first fluid A) B 0 It must be greater than pure substance A rein The zero-shear viscosity η of at least one first fluid A in pure substance form before being mixed with at least one second fluid B. A 0 Preferably 10 to 200,000 times larger, especially preferably 100 to 10,000 times larger.

[0017] The above example of explanation can also be described as follows: When components A and B of mixture AB are separated from each other, i.e., in pure substance A rein and B rein If the form exists, then η A 0 <η B 0 Preferred [10 to 200,000]·η A 0 = η B 0 Particularly preferred is [100 to 10,000]·η A 0 = η B 0 .

[0018] If the damping medium is a mixture of more than two fluids, the present invention should be understood to mean that the fluid in pure substance form within the mixture that has the highest zero-shear viscosity before being mixed with the other fluids has a higher zero-shear viscosity than the fluid in pure substance form within the mixture that has the lowest zero-shear viscosity before being mixed with the other fluids, all other things being equal, preferably 10 to 200,000 times higher, and particularly preferably 100 to 10,000 times higher.

[0019] In this application, "other conditions are the same" is understood to mean: when determining the viscosity η, especially for pure substance A rein and B rein The zero-shear viscosity, specifically η A 0 and η B 0 When, it is carried out under the same conditions, such as pressure p and / or temperature T.

[0020] In other words, "otherwise the conditions are the same" could mean that components A and B, which are in pure substance form before mixing, are determined separately under standard conditions (i.e., 0°C and 100,000 Pa), specifically pure substance A. rein and B rein Zero shear viscosity.

[0021] However, "other conditions are the same" can also be understood alternatively or additionally as other environmental influences, such as the same radiation conditions, the same electric and / or magnetic fields and / or similar conditions.

[0022] Other advantageous embodiments of the damping medium are defined in the dependent claims.

[0023] According to a preferred embodiment of the damping medium 1, the mixture may be specified as a solution or dispersion, preferably an emulsion.

[0024] A solution is a homogeneous mixture consisting of at least two pure substances, such as two miscible fluids.

[0025] A dispersion is a multiphase mixture consisting of at least two pure substances, such as a suspension consisting of a fluid and a solid in which it does not dissolve.

[0026] An emulsion is a multiphase mixture without obvious separation, consisting of at least two immiscible liquids.

[0027] According to a preferred embodiment of the damping medium 1, the mixture may be specified to be free of fillers, and preferably free of solid additives.

[0028] As a solid component of the damping medium, the filler usually fails to achieve the desired shear characteristics and may have a negative impact on the damping medium or the damper that contains the damping medium.

[0029] In addition, the protection sought is for: - A damper with this damping medium; - Accessories having this damper and / or this damping medium; - A layout system with such accessories; and - A method for manufacturing this damping medium.

[0030] For the sake of completeness, it should be noted that, within the scope of the claims and description of this application, the numerals such as one, two, three, etc., used in principle only describe the minimum number of features present in the damping medium, damper, accessory, and arrangement system of the present invention. Of course, various features or components may also exist in larger quantities. For example, the damping medium of the present invention may have more than one second fluid, the damper of the present invention may have more than one damper housing, one piston, and / or at least one damping chamber, the accessory of the present invention may have more than one damping device with more than one damper, the arrangement system of the present invention may have more than one first structure, at least one second structure, and / or one accessory, and so on. In this sense, for example, the numerals "one," "two," etc., should be reasonably understood to mean at least one, at least two, etc. Attached Figure Description

[0031] Further details and advantages of the present invention will be described in more detail with reference to the accompanying drawings. In the drawings: Figures 1 to 5 Different views of one embodiment of the damper are shown; Figures 6 to 10 Different views of one embodiment of the accessory with a damper are shown; Figure 11 and 12 A view of an embodiment of an arrangement system with accessories in a retracted position and an extended position is shown; Figures 13 to 15 Different shear curves are shown for the first fluid, the second fluid, the reference fluid, and a mixture of the first and second fluids; and Figure 16 A block diagram of a method for manufacturing a damping medium in the form of a mixture is shown. Detailed Implementation

[0032] Figure 1 , 2Figures 3, 4, and 5 show a damper 2 for accessory 3, preferably a furniture accessory, wherein the damper 2 has a damper housing 4, at least one damping chamber 5 for receiving a damping medium 1, and a piston 6 movable relative to the damper housing 4 in the damping chamber 5, wherein the damping medium 1 of the present invention is provided in the at least one damping chamber 5, preferably, the at least one damping chamber 5 is sealed by at least one seal 12, particularly preferably a seal made of acrylonitrile-butadiene rubber (NBR).

[0033] Figure 1 An exploded view of damper 2 is shown.

[0034] like Figure 1 As shown, the damper 2 may have a damping housing 4 in the form of a cylinder 17, a cylinder cover 18, a spring element 19, a spring end seat 20, a seal 12, a piston 6, a piston rod 21, and a piston disc 22.

[0035] Spring element 19 can be disposed between cylinder head 18 and spring end seat 20. Piston rod 21 can extend from the outside into damping housing 4, and is guided through holes in cylinder head 18, spring end seat 20 and seal 12 to piston 6. Piston 6 can be fixed to the end of piston rod 21 by means of piston disc 22, which is located inside damping housing 4, 17 during operation.

[0036] Figure 2 It shows Figure 1 A side view of the damper 2, wherein the piston 6 together with the piston rod 21 is in the extended state.

[0037] Figure 3 It shows Figure 3 A cross-sectional view of damper 2.

[0038] like Figure 3 As shown, a damping chamber 5 can be provided inside the damper 2, specifically within the damping housing 4 and the cylinder 17, in which the damping medium 1 can exist. The damping chamber 5 can be defined on one side by the seal 12 and on the other side by the cylindrical and enclosed inner wall of the cylinder 17. Within the damping chamber 5 and surrounded by the damping medium 1, the piston 6 can move toward the seal 12 or toward the end of the cylinder 17 opposite to the seal 12.

[0039] Figure 4 It shows Figure 1 A side view of the damper 2, with the piston 6 in the retracted state.

[0040] Figure 5 It shows Figure 4 A cross-sectional view of damper 2.

[0041] and Figure 3In comparison, spring element 19 is compressed more strongly in the retracted state. This is because when piston 6, together with piston rod 21, is in the extended state ( Figure 2 and Figure 3 Transition to indented state ( Figure 4 and Figure 5 When the damping chamber 5 is activated, an overpressure will be generated in the damping chamber 5, which can be absorbed by the spring element 19.

[0042] exist Figure 3 As can be seen, when piston 6 begins to move towards the retracted state, specifically when piston 6 moves to the right, damping medium 1 can flow laterally between piston 6 and the cylindrical inner wall of cylinder 17. Figure 3 What is not visible is that the damping medium 1 can also flow through the two holes of piston 6 and piston disk 22. The holes of piston 6 and piston disk 22 are... Figure 1 As can be seen in the text.

[0043] The cylindrical inner wall of cylinder 17, such as Figure 3 and Figure 5 As shown, the cylinder can be designed to be tapered starting from approximately half its length. Therefore, as the piston 6 moves from its extended to its retracted state, the damping medium 1 becomes increasingly difficult to flow between the piston 6 and the cylindrical inner wall. However, the flow of the damping medium 1 through the orifice between the piston 6 and the piston disc 22 remains unobstructed.

[0044] Figure 6 , 7 8, 9, and 10 show accessory 3, preferably a furniture accessory, for movably supporting at least one first, preferably movable structure 13 relative to at least one second, preferably fixed structure 14, wherein accessory 3 has a damping device 15 with a damper 2 for damped movement of the at least one first structure 13 relative to the at least one second structure 14, wherein the damper 2 has the damping medium 1 of the invention and / or the damper 2 is implemented in the manner of the invention.

[0045] The structure can be, for example, a window, a door, a drawer cabinet, or a cupboard.

[0046] Movable structures can be, for example, glass windows, house / room doors, drawers, cabinet doors, flip-tops, etc.

[0047] Fixed structures can include window frames, door frames, walls, wall structures, furniture cabinets, etc.

[0048] Figure 6 A perspective view of accessory 3 in the form of a pull-out guide is shown.

[0049] The pull-out guide may have a first, preferably movable track 23, a cargo track, a second, preferably fixed track 24, a cabinet track, and a damping device 15. The damping device 15 can dampen the movement of the first track 23 relative to the second track 24.

[0050] Figure 7 It shows Figure 6 The perspective view of accessory 3 shows that the covering element of damping device 15 is hidden. Therefore, the damper 2 of damping device 15 can be easily seen.

[0051] Figure 8 It shows Figure 7 The image shows details of accessory 3, in which damper 2 is particularly visible.

[0052] The damper 2 can be fixed to the second rail 25 of the pull-out guide, the cabinet rail, and is operatively connected to the first rail 24 via the piston rod 21. In the illustrated case, the piston 6 and therefore the piston rod 21 are in the retracted state.

[0053] Figure 9 It shows Figure 6 Side view of accessory 3.

[0054] Figure 10 It shows Figure 7 Side view of accessory 3.

[0055] The above description of damper 2 is meaningfully applicable to damping device 15.

[0056] Figure 11 and 12 The arrangement system 16 and preferred furniture are shown, including: - At least one first, preferably movable structure 13; - At least one second, preferably fixed structure 14; and - A fitting 13, preferably a furniture fitting, for movably supporting the at least one first structure 13 relative to the at least one second structure 14, wherein the fitting 3 is implemented in accordance with the invention.

[0057] Figure 11 A perspective view of a furniture-style arrangement system 16 is shown. In this case, the first, preferably movable structure 13 is designed as a drawer 27. In this case, the second, preferably fixed structure 14 is designed as a furniture cabinet 28. For better illustration, the top drawer 27 of the arrangement system 16 is omitted.

[0058] exist Figure 11 In the middle, on the side wall of the furniture cabinet 28, accessory 3 can be seen. This accessory exists in the form of a pull-out guide and is in a retracted state.

[0059] Figure 12 It shows Figure 11 A perspective view of the furniture-style arrangement system 16, in which the fitting 3 is extended. The damping device 15, which is positioned between the first track 23 and the side wall of the furniture cabinet 28, can be seen.

[0060] The above description of accessory 3 applies meaningfully to the layout system 16.

[0061] Figure 13 , 14 Figures 1 and 15 show four shear curves with four substances, where the X-axis is s -1 Shear rate is expressed in units The Y-axis represents viscosity η in mPas. The X and Y axes are logarithmically labeled.

[0062] Figures 13 to 15 The four different substances in the diagram are: pure substance A (short dashed line), pure substance B (dotted line), pure substance C (solid line), and mixture AB (long dashed line).

[0063] Figure 13 It shows from 1 s -1 Up to 1,000,000 s -1 The range of shear rates and the range of viscosity from 100 mPas to 1,000,000 mPas. Figure 14 The same shear rate range is shown, but a narrower viscosity range from 100 mPas to 10,000 mPas. Figure 15 It shows from 1,000 s -1 Up to 1,000,000 s -1 It has a narrower range of shear rates and a narrower range of viscosity from 200 mPas to about 2,500 mPas.

[0064] Figures 13 to 15 The mixture AB is a damping mixture 1, namely a damping medium 1 used in a damper 2, preferably a furniture accessory 3, wherein the damper 2 has a damper housing 4, at least one damping chamber 5 for containing the damping medium 1, and a piston 6 movable relative to the damper housing 4 in the damping chamber 5, wherein the damping medium 1 is a mixture having a first fluid 7, preferably a first liquid, and at least one second fluid 8, preferably a second liquid, wherein the at least one second fluid 8, before being mixed with the first fluid 7 as a pure substance, has, under otherwise identical conditions, a higher zero-shear viscosity than the first fluid 7 before being mixed with the at least one second fluid 8 as a pure substance, preferably 10 to 200,000 times higher, particularly preferably 100 to 10,000 times higher.

[0065] for Figures 13 to 15 The following are applicable to the embodiments described above: - Pure substance A is the first fluid 7 and has a zero shear viscosity η A 0 The value is 1,500 mPas.

[0066] - Pure substance B is a second fluid 8 and has a zero shear viscosity η B 0 It is 1,000,000 mPas.

[0067] - The mixture AB consists of pure substance A and pure substance B, and has a zero shear viscosity η. AB 0 The pressure is 10,000 mPas. The mass percentage of pure substance A is 80%, and the mass percentage of pure substance B is 20%.

[0068] - Pure substance C is the reference fluid and has a zero shear viscosity η A 0 The value is 5,200 mPas.

[0069] According to a preferred embodiment of the damping medium 1, the zero-shear viscosity of the first fluid 7 may be specified to be between 100 mPas and 1,500 mPas, preferably between 200 mPas and 1,000 mPas, and / or the zero-shear viscosity of the at least one second fluid 8 may be between 500,000 mPas and 20,000,000 mPas, preferably between 1,000,000 mPas and 16,000,000 mPas.

[0070] The technical advantage of this is that the zero-shear viscosity of the damping medium (specifically, mixture AB) can be adjusted over a wide range, specifically between 1,500 mPas and 1,000,000 mPas.

[0071] According to a preferred embodiment of the damping medium, the viscosity of the mixture can be specified.

[0072] - In the preferred mode, up to 100 s -1 At low shear rates, greater than 8,000 mPas; and

[0073] - In the preferred 1,000 s -1 Up to 100,000 s -1 10,000 s is a particularly preferred option. -1 Up to 100,000 s -1 At high shear rates and under otherwise identical conditions, it is less than 8,000 mPas.

[0074] According to a preferred embodiment of the damping medium, the viscosity of the mixture can be specified.

[0075] - In the preferred mode, up to 100 s -1 At low shear rates, greater than 3,000 mPas; and

[0076] - In the preferred 1,000 s -1 Up to 100,000 s -1 10,000 s is a particularly preferred option. -1 Up to 100,000 s -1 At high shear rates and under otherwise identical conditions, it is less than 3,000 mPas.

[0077] According to a preferred embodiment of the damping medium, the viscosity of the mixture can be specified.

[0078] - In the preferred mode, up to 100 s -1 At low shear rates, greater than 500 mPas; and

[0079] - In the preferred 1,000 s -1 Up to 100,000 s -1 10,000 s is a particularly preferred option. -1 Up to 100,000 s -1 At high shear rates and under otherwise identical conditions, the value is less than 500 mPas.

[0080] The technical effect of this is that the shear characteristics of the damping medium (specifically, mixture AB) correspond to a higher viscosity fluid at low shear rates, but to a lower viscosity fluid at high shear rates.

[0081] According to a preferred embodiment of the damping medium, it can be specified that at a shear rate within the application range 9 of the damping medium 1, preferably within the effective application range 29 of the damping medium 1, and particularly preferably from 1,000 s⁻¹, the damping medium 1 is subjected to a shear rate that is suitable for applications within the application range 9 of the damping medium 1. -1 Up to 100,000 s -1 Especially preferred from 10,000 s -1 Up to 100,000 s -1 The viscosity of the mixture at the shear rate, under otherwise identical conditions, is less than, at most 100 s⁻¹ outside the application range 9, preferably outside the effective application range 29, and particularly preferably outside the effective application range 29. -1 The viscosity of the mixture at a lower shear rate is preferably 2 to 10 times lower.

[0082] The application range refers to the range of shear rates at which the damping medium is applied. The application range here can range from 1 s... -1 To 100,000,000 s -1 Typically, the application range is from 1 second. -1 Up to 1,000,000 s -1 The effective application range can be used instead of the application range. The effective application range is the range of shear rates in which the damping effect of the damping medium occurs at least most of the time, and / or the range of shear rates in which the gradient (i.e., slope) of the viscosity as a function of shear rate is not zero.

[0083] Damping may be particularly necessary at higher shear rates, for example, to dampen the closing motion of drawer 27, see [reference needed]. Figure 11 and 12 When the user forcefully closes drawer 27, the damping medium 1 may initially experience a relatively high shear rate, at which point low viscosity shear characteristics may be desirable. As drawer 27 approaches its final closed position, the closing speed may decrease due to braking, resulting in a lower shear rate. During this closing phase of drawer 27, high viscosity shear characteristics of the damping medium 1 may be desirable.

[0084] According to a preferred embodiment of the damping medium, it can be specified that: - The shear curve 10 of the mixture, derived from viscosity as a function of shear rate, approaches the shear curve 11 of the pure substance having a zero-shear viscosity lower than that of the mixture as the shear rate increases; and / or - The shear curve 10 of the mixture, derived from viscosity as a function of shear rate, intersects at least once with the shear curve 11 of the pure substance having a zero-shear viscosity lower than that of the mixture as the shear rate increases.

[0085] The shear curve of the mixture 10 Figure 15 The middle line shows the shear curve (long dashed line) for mixture AB. The shear curve for the pure substance is shown in Figure 11. Figure 15 The curve in the middle is the shear curve (solid line) of pure substance C, which can be used as a reference fluid.

[0086] exist Figure 14 and Figure 15 As can be seen, the shear curve 10 (long dashed line) of mixture AB intersects the shear curve (solid line) of pure substance C twice. This means that mixture AB has a higher viscosity than pure substance C before the first intersection point, then a lower viscosity until the second intersection point, and then a higher viscosity again after the second intersection point.

[0087] This results in the following technical effect: the shear curve 10 of the mixture approaches the shear curve 11 of the pure substance and / or intersects the shear curve 11 of the pure substance at least once. Therefore, a damping medium 1, specifically a mixture AB, can be provided, which has a higher viscosity than another damping medium (specifically, a pure substance 11, or reference fluid C) in a defined, preferably lower, shear rate range, and a lower viscosity in another, preferably higher, shear rate range. In this way, damping medium 1 (mixture AB) is more suitable for its respective application than the other damping medium (reference fluid C).

[0088] According to a preferred embodiment of the damping medium 1, the mixing ratio of the first fluid 7 to the at least one second fluid 8 can be specified to be between 1:1 and 25:1, preferably between 2:1 and 7:1, and particularly preferably between 3:1 and 5:1.

[0089] In a preferred embodiment, the mixture 10 may be specified to contain at least equal amounts of the first fluid 7 and the at least one second fluid 8, or to contain more of the first fluid 7 than the at least one second fluid 8, in other words, to contain more of the dilute fluid than the thick fluid.

[0090] In a preferred embodiment, the mixing ratio of the first fluid 7 to the at least one second fluid 8 may be specified as 4:1.

[0091] The technical effect of this is that, within the limits given by the first fluid 7 and the at least one second fluid 8, the damping medium 1 has zero shear viscosity on the one hand, and the shear characteristics can be flexibly adjusted on the other hand.

[0092] According to a preferred embodiment of the damping medium 1, the first fluid 7 and / or the at least one second fluid 8 may be silicone oil, preferably polydimethylsiloxane (PDMS), modified polydimethylsiloxane and / or a copolymer of polydimethylsiloxane.

[0093] The material selection of the first fluid 7 and the at least one second fluid 8 can determine the limits of the adjustable zero-shear viscosity and shear properties of the damping medium 1.

[0094] The selection of materials, combined with the mixing ratio of the first fluid 7 and the at least one second fluid 8, allows for the individual adjustment of the zero-shear viscosity and shear characteristics of the damping medium 1. Therefore, the approximation and / or intersection of the shear curve of the damping medium 1 with the shear curve of the reference fluid C can also be flexibly adjusted. For example, the intersection of the shear curves of the damping medium 1 and the reference fluid C can be achieved at a preferred shear rate and / or a preferred viscosity.

[0095] Figure 16A block diagram of a method for manufacturing damping medium 1 is shown, the method comprising the following steps: - Provides a first fluid 7, preferably a first liquid, in the form of a pure substance and having a first zero-shear viscosity; - Provide at least one second fluid 8, preferably a second liquid, in the form of a pure substance and having a second zero-shear viscosity, wherein the second zero-shear viscosity of the at least one second fluid 8 is higher than the first zero-shear viscosity of the first fluid 7; - Mix the first fluid 7 and the at least one second fluid 8 into a mixture.

[0096] exist Figure 16 In the process, the first zero-shear viscosity η7 of the first fluid 7 before mixing with the at least one second fluid 8 0 The viscosity η8 of the at least one second fluid 8 before mixing with the first fluid 7 is less than the second zero-shear viscosity η8. 0 After mixing, a damping medium 1 is produced in the form of a mixture of a first fluid 7 and at least one second fluid 8, wherein the zero shear viscosity η1 of the mixture is... 0 Between the first zero shear viscosity η7 of the first fluid 7 0 and the second zero-shear viscosity η8 of the at least one second fluid 8 0 between.

[0097] List of reference numerals in the attached diagram: 1 Damping medium 2 Dampers 3 accessories 4. Damper housing 5 Damping Chamber 6 pistons 7 First Fluid 8 Second Fluid 9. Application Scope 10. Shear curves of the mixture 11. Shear curves of pure substances 12 Seals 13 First Structure 14 Second Structure 15 Damping devices 16. Layout System 17 Cylinder Block 18 Cylinder head 19 Spring elements 20 Spring end seat 21 Piston rod 22 Piston disc 23 First Track 24 Second Track 25 Mounting Plate 26. Middle track 27 drawers 28 Furniture cabinet 29. Scope of effective application.

Claims

1. A damping medium (1) for use in a damper (2) of an accessory (3), preferably a furniture accessory, said damper (2) having a damper housing (4), at least one damping chamber (5) for containing the damping medium (1), and a piston (6) movable relative to the damper housing (4) within the damping chamber (5), said damping medium (1) being a mixture having a first fluid (7), preferably a first liquid, and at least one second fluid (8), preferably a second liquid, characterized in that, The at least one second fluid (8) in pure substance form before being mixed with the first fluid (7) has a higher zero-shear viscosity than the first fluid (7) in pure substance form before being mixed with the at least one second fluid (8), all other things being equal, preferably 10 to 200,000 times higher, particularly preferably 100 to 10,000 times higher.

2. The damping medium (1) according to claim 1, characterized in that, The mixture is a solution or dispersion, preferably an emulsion.

3. The damping medium (1) according to claim 1 or 2, characterized in that, The mixture contains no fillers, and preferably no solid additives.

4. The damping medium (1) according to any one of the preceding claims, characterized in that, The zero-shear viscosity of the first fluid (7) is between 100 mPas and 1,500 mPas, preferably between 200 mPas and 1,000 mPas, and / or the zero-shear viscosity of the at least one second fluid (8) is between 500,000 mPas and 20,000,000 mPas, preferably between 1,000,000 mPas and 16,000,000 mPas.

5. The damping medium (1) according to any one of the preceding claims, characterized in that, Viscosity of the mixture - In the preferred mode, up to 100 s -1 At low shear rates, greater than 8,000 mPas; and - In the preferred 1,000 s -1 Up to 100,000 s -1 Special selection from 10,000 s -1 Up to 100,000 s -1 At high shear rates and less than 8,000 mPas under otherwise identical conditions.

6. The damping medium (1) according to any one of the preceding claims, characterized in that, Viscosity of the mixture - In the preferred mode, up to 100 s -1 At low shear rates, greater than 3,000 mPas; and - In the preferred 1,000 s -1 Up to 100,000 s -1 Special selection from 10,000 s -1 Up to 100,000 s -1 At high shear rates and less than 3,000 mPas under otherwise identical conditions.

7. The damping medium (1) according to any one of the preceding claims, characterized in that, Viscosity of the mixture - In the preferred mode, up to 100 s -1 At low shear rates, greater than 500 mPas; and - In 1,000 s -1 Up to 100,000 s -1 10,000 s is a particularly preferred option. -1 Up to 100,000 s -1 At high shear rates and less than 500 mPas under otherwise identical conditions.

8. The damping medium (1) according to any one of the preceding claims, characterized in that, At a shear rate within the application range (9) of the damping medium (1), preferably within the effective application range (29) of the damping medium (1), and particularly preferably at 1,000 s⁻¹. -1 Up to 100,000 s -1 Especially preferred at 10,000 s -1 Up to 100,000 s -1 The viscosity of the mixture at the shear rate is less than, under otherwise identical conditions, outside the application range (9), preferably outside the effective application range (29), and particularly preferably within at most 100 s. -1 The viscosity of the mixture at a lower shear rate is preferably 2 to 10 times lower.

9. The damping medium (1) according to any one of the preceding claims, characterized in that, - The shear curve of the mixture (10), derived from the viscosity as a function of shear rate, approaches the shear curve of the pure substance (11), which has a zero shear viscosity lower than that of the mixture, as the shear rate increases; and / or - The mixture shear curve (10), derived from the viscosity as a function of shear rate, intersects at least once with the shear curve (11) of the pure substance having a zero shear viscosity lower than that of the mixture, as the shear rate increases.

10. The damping medium (1) according to any one of the preceding claims, characterized in that, The mixing ratio of the first fluid (7) to the at least one second fluid (8) is between 1:1 and 25:1, preferably between 2:1 and 7:1, and particularly preferably between 3:1 and 5:

1.

11. The damping medium (1) according to any one of the preceding claims, characterized in that, The first fluid (7) and / or the at least one second fluid (8) is silicone oil, preferably polydimethylsiloxane (PDMS), modified polydimethylsiloxane and / or a copolymer of polydimethylsiloxane.

12. A damper (2) for accessories (3) and preferred furniture accessories, wherein, The damper (2) has a damper housing (4), at least one damping chamber (5) for containing a damping medium (1), and a piston (6) movable relative to the damper housing (4) in the damping chamber (5), characterized in that the at least one damping chamber (5) is provided with a damping medium (1) according to any one of claims 1 to 11, preferably, the at least one damping chamber (5) is sealed by means of at least one seal (12), particularly preferably a seal made of acrylonitrile-butadiene rubber (NBR).

13. Accessories (3), preferably furniture accessories, for movably supporting at least one preferred movable first structure (13) relative to at least one preferred fixed second structure (14), wherein, The accessory (3) has a damping device (15) with a damper (2) for damping the movement of the at least one first structure (13) relative to the at least one second structure (14), characterized in that the damper (2) has a damping medium (1) according to any one of claims 1 to 11 and / or the damper (2) is implemented according to claim 12.

14. Layout system (16), preferred furniture, said layout system comprising: - Preferably, at least one movable first structure (13); - Preferably, at least one second structure (14) is fixed; and - A fitting (13) for movably supporting the at least one first structure (13) relative to the at least one second structure (14), preferably a furniture fitting. The accessory (3) is characterized in that it is implemented according to claim 13.

15. A method for manufacturing a damping medium (1) preferably according to any one of claims 1 to 11, characterized in that... The following are the steps: - Provide a first fluid (7) in the form of a pure substance having a first zero-shear viscosity, preferably a first liquid; - Provide at least one second fluid (8), preferably a second liquid, in the form of a pure substance having a second zero-shear viscosity, wherein the second zero-shear viscosity of the at least one second fluid (8) is higher than the first zero-shear viscosity of the first fluid (7); - Mix the first fluid (7) and the at least one second fluid (8) into a mixture.

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