CN101063474A - Cylindrical dynamic damper - Google Patents
Cylindrical dynamic damper Download PDFInfo
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- CN101063474A CN101063474A CN 200710104785 CN200710104785A CN101063474A CN 101063474 A CN101063474 A CN 101063474A CN 200710104785 CN200710104785 CN 200710104785 CN 200710104785 A CN200710104785 A CN 200710104785A CN 101063474 A CN101063474 A CN 101063474A
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Abstract
A cylindrical dynamic damper including: a cylindrical fastening member of elastic body to be fitted onto a rod shaped vibrating member; a mass member of tubular shape disposed about the cylindrical fastening member in a concentric fashion; a plurality of elastic connecting members disposed between the cylindrical fastening member and the mass member to extend in an axis-perpendicular direction; and a plurality of thin elastic film members disposed between and integrally formed with circumferentially adjacent ones of the elastic connecting members. The cylindrical fastening member and the mass member is elastically connected together via the elastic connecting members and the elastic film members. Each of the elastic film members is inclined to one axial side, and at least one of the elastic film members is inclined to an opposite axial side in comparison with the other elastic film members.
Description
Incorporated by reference
The disclosure of the Japanese patent application No.2006-140344 that the Japanese patent application No.2006-124275 that on April 27th, 2006 submitted to and on May 19th, 2006 submit to---includes specification, accompanying drawing and summary---and quotes in full in this as a reference.
Technical field
The cylindrical dynamic damper (dynamic damper) of the vibration that is inspired in the shaft-like vibration member is gone up and can be suppressed to---these parts because vibration from wherein transmitting by being excited---to the present invention relates to a kind of for example multiple axle of hollow or solid rod-like parts, arm and pipe of being installed in.
Background technique
Multiple rod-like members comprises for example axle and arm and the pipe that forms the fluid passage problem that may cause self resonance and vibration to be passed through from transmission wherein of power transmission member.A kind of known measure at these problems is mounted in the dynamic shock absorber on the rod-like members.
JP-Y-2-18363 discloses an example of dynamic shock absorber, and wherein tubular secure component and quality part be with the concentric manner setting, and flexibly links together by the elastic connecting element that is formed by elastomer.The tubular secure component centers on shaft-like vibration member setting and assembles thereon, makes quality part flexibly be bearing on the shaft-like vibration member via elastic connecting element, thereby provides time vibration system with respect to the principal oscillation system of shaft-like vibration member.Such dynamic shock absorber for example can be applicable to automobile driving axle etc.
In the disclosed dynamic shock absorber by JP-Y-2-18363, for example, a plurality of elastic connecting elements edge circumferentially is spaced from each other, and is provided with the elastic membrane parts of a plurality of film shape between adjacent elastic connecting element.That is, the circumferential interval between the adjacent elastic connecting element is by the sealing of these elastic membrane parts, makes to prevent that stone etc. from entering the gap between the elastic connecting element.In addition, the circumferentially spaced existence between the adjacent elastic connecting element can cause that at mould split line---being combined together at this joint line place half face---is irregularly formed the problem of burr on every side.These burrs can cause the damping behavior and/or the durability variation of dynamic shock absorber.Form the elastic membrane parts and can eliminate the mould split line that between adjacent elastic connecting element, exists, thereby prevent by the damping behavior variation that burr caused that is irregularly formed around joint line.
But in the disclosed dynamic shock absorber of JP-Y-2-18363, the elastic membrane parts may compress moving on the input direction of repressed vibration/tensile buckling according to quality part.As a result, even the elastic membrane parts are very thin, they still are easy to the spring constant of inferior vibration system is had a negative impact.In addition, this is difficult to make the elastic component (spring component) in the inferior vibration system that is made of dynamic shock absorber little, thereby limited inferior vibration system is carried out tuning degrees of freedom.In addition, the minor variations of the wall thickness of elastic membrane parts can cause the variation of the tuned frequency of time vibration system, thereby dynamic shock absorber can not provide desired damping property effectively.
In order to address this problem, the applicant has proposed improved dynamic shock absorber in JP-A-8-277883, wherein the elastic membrane parts form corrugated tube shape or clinoplain shape, thereby when quality part moved along the direction with axis normal with respect to shaft-like vibration member, the elastic membrane parts were subjected to shear deformation.This improved dynamic shock absorber can make between quality part and the shaft-like vibration member along with the direction generation relative displacement of axis normal during the elastic membrane parts adverse effect of the damping behavior of the spring constant of inferior vibration system and dynamic shock absorber is minimized.
But the broad research that the inventor carries out shows that still there is certain room for improvement in disclosed dynamic shock absorber in JP-A-8-277883.Promptly, for the elastic membrane parts of corrugated tube shape, if the radial distance between tubular secure component (or shaft-like vibration member) and the quality part is big inadequately, then when the big oscillating load of input, the elastic membrane parts are folding, thereby may cause the spring constant of time vibration system to enlarge markedly.In addition, if the radial distance between tubular secure component and the quality part is enough big, then be difficult to fully satisfy the small size requirement on the other hand.Therefore, be difficult to according to the type of inputted vibration and/or required space be installed adopt the dynamic shock absorber that has as the disclosed structure of JP-A-8-277883.
Elastic membrane parts for the clinoplain shape, although can avoid spring constant owing to folding elastic membrane parts increase, the elastic membrane parts that tilt will cause the elastic main axis line of the elastic component of dynamic shock absorber to tilt with respect to---promptly vibrating input direction---with the direction of axis normal.Therefore, quality part is easy to cause the edge to lever up the swing displacement of (prizing) or direction of twist generation when the vibration input, thereby the displacement of not expecting of the direction of quality part edge except that the vibration input direction may make the expectation effectiveness in vibration suppression variation of dynamic shock absorber.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of cylindrical dynamic damper of novel structure, this cylindrical dynamic damper can make the elastic membrane parts that the adverse effect of the spring performance of inferior vibration system is minimized, and the excitation force that can cause by the displacement that effectively utilizes by quality part is realized effective effectiveness in vibration suppression.
Above-mentioned and/or optional aim of the present invention can be according at least a realization the in the following modes of the present invention.Following modes of the present invention and/or in each pattern employed element can adopt with any possible optional combination.Be to be understood that, principle of the present invention is not limited to the combination of these patterns of the present invention and technical characteristics, but can come cognitive, perhaps next cognitive by those skilled in the art based on disclosed instruction of the present invention in whole specification and accompanying drawing according to the integral body of present disclosure.
First pattern of the present invention provides a kind of cylindrical dynamic damper that is used to be installed on the shaft-like vibration member, and this vibration damper comprises: formed and be suitable for around described shaft-like vibration member setting and be assemblied in tubular secure component on this shaft-like vibration member by elastomer; Diameter is tubulose quality part big and that be provided with around this tubular secure component with concentric manner than this tubular secure component; A plurality of elastic connecting elements, these elastic connecting elements are arranged on the radially corresponding circumferential position place between the opposing side of described tubular secure component and described quality part, so that along extending with the direction of axis normal; And be arranged on a plurality of thin elastic membrane parts that are integrally formed into along between the circumferentially adjacent elastic connecting element and with these elastic connecting elements, described tubular secure component flexibly is connected with described elastic membrane parts by described elastic connecting element each other with described quality part, make described quality part flexibly be supported by described shaft-like vibration member, wherein each elastic membrane parts tilts towards an axial side, and at least one elastic membrane parts is compared with other elastic membrane parts towards relative axial side.
According to the cylindrical dynamic damper of this pattern, each elastic connecting element is thinner, and tilts towards an axial side.Therefore, each elastic membrane parts is subjected to shear deformation when quality part is subjected to displacement along the direction with axis normal.This setting can make the elastic membrane parts that the adverse effect of the spring performance of inferior vibration system is minimized or eliminate this adverse effect.Therefore, cylindrical dynamic damper of the present invention can be brought into play the damping effect of expectation effectively to the inputted vibration in the expected frequency range.
In addition, at least one in a plurality of elastic membrane parts compared with other elastic membrane parts towards relative axial side.This makes and can prevent when utilizing the elastic membrane parts that tilt that the elastic main axis line of time vibration system from tilting.Therefore, can prevent that quality part is subjected to displacement along the direction different with the vibration input direction when oscillating load is imported.Therefore, cylindrical dynamic damper of the present invention can be brought into play the effectiveness in vibration suppression of expectation fully.
Each elastic membrane parts should be understood to the elastic membrane parts towards the inclination of an axial side radial outer end is displaced to a side vertically with respect to the radial inner end of elastic membrane parts.Be displaced to vertically under the situation of opposite side in the radial outer end of the elastic membrane parts radial inner end with respect to the elastic membrane parts,---radial outer end of these other elastic membrane parts is displaced to a described side vertically with respect to its radial inner end---compared towards relative axial side to this means these elastic membrane parts and other elastic membrane parts.
Second pattern of the present invention provides a kind of cylindrical dynamic damper according to first pattern, and wherein the tubular secure component is formed with a pair of recess, and described recess is formed on the axial both sides of each elastic connecting element and along these both sides and extends.According to this pattern, be compressed under the situation of distortion along direction along direction displacement and elastic connecting element at quality part with axis normal with axis normal, the existence of recess can make elastic connecting element dilatancy vertically minimize.This setting can prevent that the axial both sides of elastic connecting element from breaking owing to this dilatancy or breakage, thereby improves the durability of dynamic shock absorber effectively.
Three-mode of the present invention provides a kind of cylindrical dynamic damper according to first or second pattern, wherein a plurality of elastic membrane parts comprise even number elastic membrane parts, and oblique to inclination towards disalignment respect to one another along the circumferentially adjacent elastic membrane parts that are provided with an elastic connecting element therebetween.According to this pattern, the elastic membrane balance of plant that tilts mutually towards relative axial side is provided with well, thereby the interior elastic main axis line of elastic component that can prevent dynamic shock absorber effectively tilts.This setting can prevent effectively further that quality part from along being different from the direction of vibrating input direction undesirable displacement taking place, thereby dynamic shock absorber of the present invention will be brought into play the effectiveness in vibration suppression of expectation effectively.
It is a kind of according to first any one cylindrical dynamic damper to the three-mode that four-mode of the present invention provides, wherein the internal diameter of tubular secure component is less than the external diameter of shaft-like vibration member, and the tubular secure component is force-fitted on the shaft-like vibration member, makes the tubular secure component be fixedly mounted on the shaft-like vibration member.According to this pattern, cylindrical dynamic damper can be fixedly mounted on the shaft-like vibration member and need not for example restraint zone etc. of special-purpose secure component.Therefore, dynamic shock absorber of the present invention can easily be installed on the shaft-like vibration member, can guarantee that the quantity of parts reduces simultaneously.
Description of drawings
From being more clearly visible above-mentioned and/or other purpose feature and advantages of the present invention the description of a preferred embodiment with reference to the accompanying drawings, identical in the accompanying drawings reference character is represented components identical, wherein:
Fig. 1 is the front view according to the cylindrical dynamic damper of the structure of first embodiment of the invention;
Fig. 2 is the cross sectional view along the dynamic shock absorber of Fig. 1 of the line 2-2 intercepting of Fig. 1;
Fig. 3 is the cross sectional view along the dynamic shock absorber of Fig. 1 of the line 3-3 intercepting of Fig. 1;
Fig. 4 is the partial enlarged view in cross section of the dynamic shock absorber of Fig. 1;
Fig. 5 is the front view according to the cylindrical dynamic damper of the structure of second embodiment of the invention;
Fig. 6 is the rear view of the dynamic shock absorber of Fig. 5;
Fig. 7 is the cross sectional view along the dynamic shock absorber of Fig. 5 of the line 7-7 intercepting of Fig. 5.
Embodiment
At first, the cylindrical dynamic damper 10 of constructing according to first embodiment of the invention is shown with reference to Fig. 1-3.Dynamic shock absorber 10 has such structure, and wherein the elastic mounting part spare 12 as the tubular secure component flexibly is connected by a plurality of elastic supporting parts 16 as elastic connecting element each other with quality part 14.Dynamic shock absorber 10 is fixed on this live axle on elastic mounting part spare 12 is fastened on live axle (not shown) as the vibrating arm parts from the outside.
In detail, elastic mounting part spare 12 is formed by rubber material and has a tubular.The internal diameter size of elastic mounting part spare 12 is slightly smaller than the outside dimension of live axle, thereby guarantees enough press fit tolerances.Therefore, as hereinafter illustrating, dynamic shock absorber 10 firmly is attached on the live axle by elastic mounting part spare 12 is force-fitted in from the outside.
In this diameter interval between elastic mounting part spare 12 and quality part 14, be formed with a plurality of elastic supporting parts 16 and their edges and extend, thereby elastic supporting part 16 interconnects elastic mounting part spare 12 and quality part 14 with the direction of axis normal.In this embodiment, the axial dimension of each elastic supporting part 16 greater than its with the direction of axis normal on size.Described a plurality of elastic supporting part 16 form from elastic mounting part spare 12 axially on substantial middle portion extend radially outward along direction with axis normal.Especially in this embodiment, be provided with even number, be preferably six elastic supporting parts 16, thereby six separate elastic supporting parts 16 are along circumferentially being spaced from each other with uniform interval.In addition, elastic supporting part 16 is integrally formed into elastic mounting part spare 12, and rubber sheath layer 20 is integrally formed into elastic supporting part 16 and basic this quality part that covers on the whole surface of quality part 14 simultaneously.By this setting, elastic mounting part spare 12 and quality part 14 interconnect by elastic supporting part 16.The opposed end of rubber sheath layer 20 on it is axial has otch.At each end of rubber sheath layer 20, be formed with otch along orthogonal two diametric(al) positions respect to one another.
Elastic mounting part spare 12 has the circumferential groove 22 of shallow slot shape, and it is at the outer circumferential face inner opening of elastic mounting part spare 12, and is formed on the axial central part that is formed with elastic supporting part 16 of elastic mounting part spare 12.Circumferential groove 22 circumferentially extends continuously in the whole circumference upper edge and has constant substantially cross section, and its width direction size (axial dimension) is greater than the axial dimension of each elastic supporting part 16.As shown in Figure 4, each elastic supporting part 16 forms from the axial central part of circumferential groove 22 and extends.Be provided with by this, each elastic supporting part 16 axially on either side on all utilize circumferential groove 22 to be formed with recess 23.Recess 23 each elastic supporting part 16 axially on either side extend, thereby by smooth surface form continuously each elastic supporting part 16 axially on arbitrary and the outer circumferential face of elastic mounting part spare 12 between the border.
The edge circumferentially is formed with thin rubber film 24a, the 24b as the elastic membrane parts between adjacent elastic supporting part 16. Thin rubber film 24a, 24b are formed by rubber elastic material, and all have the film shape of general planar.Be integrally formed into according to this embodiment's thin rubber film 24a, 24b and elastic mounting part spare 12 and elastic supporting part 16, thereby extend into the zone that sealing is surrounded by elastic mounting part spare 12, quality part 14 and elastic supporting part 16.The wall thickness of each thin rubber film 24a, 24b is fully less than the axial thickness of each elastic supporting part 16.In addition, the end in elastic mounting part spare 12 sides (along diametric inboard) of each thin rubber film 24a, 24b is positioned on the circumferential groove 22, thereby stretches out from the bottom surface of circumferential groove 22.See as knowing from explanation above, in this embodiment, elastic supporting part 16 and thin rubber film 24a, 24b all are set as even number, thereby the corresponding circumferential position place between the neighbor in six elastic supporting parts 16 is formed with thin rubber film 24a, the 24b that adds up to six respectively independently.
Not with the thickness size of each thin rubber film 24a, 24b of any special type restriction preferably in the scope of 0.3-2.0mm, more preferably in the scope of 0.6-1.3mm.If the thickness size of each thin rubber film 24a, 24b is too small, then cause the durability variation of thin rubber film 24a, 24b sometimes.On the other hand, if the thickness size of each thin rubber film 24a, 24b is excessive, then the rigidity of thin rubber film 24a, 24b will be higher than necessary rigidity, thus the spring constant of influence time vibration system.In addition, each thin rubber film 24a, 24b preferably be not more than at the thickness size of thin part of its substantial middle each elastic supporting part 16 the axial thickness size 1/2nd, more preferably be not more than 1/3rd.
Each thin rubber film 24a, 24b have the flat film shape of inclination, and it is with respect to extending vertically along the plane inclination ground with the extension of axis normal direction.In addition, in this embodiment, along circumferentially adjacent thin rubber film 24a, 24b opposite directions inclination vertically.Particularly, as shown in figs. 1 and 3, each thin rubber film 24a along diametric(al) outwards (in Fig. 3 vertically upward) tilt, so that make its end be arranged in a side (left side of Fig. 3) vertically in quality part 14 sides (along the diametric outside), and each thin rubber film 24b along diametric(al) outwards (in Fig. 3 vertically downward) tilt so that make its end be arranged in opposite side (right side of Fig. 3) vertically in quality part 14 sides (along the diametric outside).
Preferably be set in the scope of 20 ° to 70 ° (70 ° to-20 °) with respect to the inclination angle on the plane of the direction extension of edge and axis normal less than each thin rubber film 24a, 24b of limiting with any special type, more preferably in the scope of 40 ° to 60 ° (60 ° to-40 °).If the inclination angle is too small, then quality part 14 causes compressing component (stretching component) change greatly along the displacement meeting with the axis normal direction, thus the spring constant of influence time vibration system.On the other hand, if the inclination angle is excessive, then thin rubber film 24a, 24b and dynamic shock absorber 10 axial dimension generally will become and make us undesirably big.
In this embodiment, the shape and size of thin rubber film 24a, 24b are mutually the same.In addition, measure (absolute value) at the inclination angle of thin rubber film 24a, 24b is equal to each other.In this embodiment, for example, thin rubber film 24a and thin rubber film 24b be arranged to respectively with respect to along and the direction of the axis normal plane of extending with the angle tilts of 45 ° and-45 °.
As along with the direction of axis normal as seen, the center of gravity of each thin rubber film 24a, 24b all is positioned at along on the central axis of each elastic supporting part 16 that extends with the direction of axis normal.In other words, the axial centre of elastic supporting part 16 and thin rubber film 24a, 24b is positioned at along the same plane of extending with the direction of axis normal.In addition, be arranged so that axial distance between its axial opposed end less than the axial dimension of each elastic supporting part 16 according to each thin rubber film 24a, 24b of this embodiment, and its axial opposed end forms outstanding vertically from the axial opposed end of each elastic supporting part 16.
Be fixed on the live axle (not shown) by elastic mounting part spare 12 being press-fitted from the outside merge, will be installed on the automobile according to the dynamic shock absorber 10 that this embodiment constructs.Especially in this embodiment, compare with the outside dimension of live axle, the internal diameter size of elastic mounting part spare 12 is little as to be enough to carry out press fit.Therefore, when dynamic shock absorber 10 is attached on the live axle, can obtains firm installment state by press fit and need not for example restraint zone of any special-purpose member.
The fastening tolerance of elastic mounting part spare 12 (press fit tolerance): p is preferably in the scope of 5-30%, more preferably in the scope of 15-25%.Relevant for this, fastening tolerance: p represents that in order to following equation wherein " B " is the internal diameter size of elastic mounting part spare 12 before press fit, and " A " is the outside dimension of the live axle that equates with the internal diameter size of elastic mounting part spare 12 after press fit:
p＝((A-B)/A)×100(％)
If fastening tolerance is too small, then be difficult to by with 12 press fits of elastic mounting part spare be fixed on dynamic shock absorber 10 firmly be installed on the live axle.On the other hand, if fastening tolerance is excessive, then can causes the excessive resiliently deformable of elastic mounting part spare 12, thereby cause the durability variation owing to press fit.
For the dynamic shock absorber of installing as described above 10, quality part 14 and elastic supporting part 16 constitute time vibration system with respect to the principal oscillation system that is made of live axle.The resonant frequency that dynamic shock absorber 10 can be tuned as the principal oscillation system by the resonant frequency with inferior vibration system obtains the damping effect brought into play by the excitation force of quality part 14.
Herein, along the time with the Vertical direction inputted vibration of axis, quality part 14 and elastic mounting part spare 12 along with direction---this direction represent the input direction of principal oscillation load---the generation relative displacement of axis normal.Therefore, resiliently deformable takes place in thin rubber film 24a, the 24b that is formed between relative quality part 14 and the elastic mounting part spare 12.
In addition, in this embodiment, tilt along opposite directions along adjacent thin rubber film 24a, 24b on the either side that circumferentially is positioned at each elastic supporting part 16.Therefore, can minimize or avoid the principal elastic axis line inclination vertically of time vibration system, thereby prevent that quality part 14 swingingly is subjected to displacement along twisting or levering up direction with respect to elastic mounting part spare 12.Therefore, dynamic shock absorber 10 can be by being passed to live axle and be realized damping effect effectively by the power that quality part 14 produces effectively.Especially in this embodiment, the size of each elastic supporting part 16 be made in the axial direction than with the direction of axis normal on big.This is arranged so that and can prevents more effectively that quality part 14 from twisting or levering up the relative displacement of direction generation with respect to elastic mounting part spare 12 edges, thereby realizes more effective damping effect.
Therefore, especially in this embodiment, along circumferentially forming and be provided with six the essentially identical thin rubber film of shape 24a, 24b altogether with even interval.More specifically, along three thin rubber film 24a and three thin rubber film 24b of circumferentially forming opposite directions inclination vertically in an alternating manner.Be provided with by this, can prevent more effectively that the principal elastic axis line of time vibration system from tilting, thereby realize more effective damping effect.
In addition, in this embodiment, compare with the outside dimension of live axle, the internal diameter size of elastic mounting part spare 12 is little as to be enough to carry out press fit.This make by with elastic mounting part spare 12 from outside press fit be fixed on the live axle, dynamic shock absorber 10 can obtain enough installing forces with respect to live axle.Therefore, can easily be attached to according to this embodiment's dynamic shock absorber 10 and need not to use separately for example restraint zone of any isolated plant on the live axle.Especially in this embodiment, even little as to be enough in press fit under the original state and when mounted largely under the condition of enlarged at the internal diameter size of elastic mounting part spare 12, the inclination of thin rubber film 24a, 24b still can make thin rubber film 24a, 24b itself occur folding or overlap condition (possibility) minimizes or avoid to occur this state.Therefore, dynamic shock absorber 10 can be realized the fastening tolerance of elastic mounting part spare 12 with respect to live axle.
In addition, in this embodiment, dynamic shock absorber 10 is not easy to be subjected to made us not desired effects by what thin rubber film 24a, 24b in the inferior vibration system produced.Therefore, compare, can use rubber material with high rubber hardness with the dynamic shock absorber of the conventional construction of influence largely that is subjected to the thin rubber film for reasons in structure.Therefore, dynamic shock absorber 10 can more effectively be realized the fastening force of elastic mounting part spare 12 with respect to live axle, thereby can more advantageously be attached on the live axle and need not any restraint zone.
As shown in Figure 4, have at the outer circumferential face upper shed of elastic mounting part spare 12 and the circumferential groove 22 that on whole circumference, extends, and elastic supporting part 16 and thin rubber film 24a, 24b extend from the bottom surface of this groove according to this embodiment's dynamic shock absorber 10.When elastic mounting part spare 12 is fixed from the outside on the live axle and expands thus, elastic supporting part 16 along with the direction generation compressive strain of axis normal.Even in this case, the dynamic shock absorber 10 of She Zhiing makes rubber material to escape to move (escape) to circumferential groove 22 shown in the double dot dash line among Fig. 4 as described above, thereby minimizes or avoid elastic supporting part 16 vertically or circumferential dilatancy.As a result, can prevent that the axial sides of elastic supporting part 16 is owing to the tensile stress that its arc expansion caused is broken.Therefore, dynamic shock absorber 10 can advantageously be avoided its durability variation.Should be pointed out that each elastic supporting part 16 is formed in the width direction central part of circumferential groove 22, and its axial dimension is less than axial (width direction) size of circumferential groove 22.Therefore, on the axial either side of each elastic supporting part 16, all utilize circumferential groove 22 to form recess 23.This is arranged so that the dilatancy that can advantageously be avoided elastic supporting part 16 to take place vertically.
In addition, each elastic supporting part 16 axially on arbitrary face all form continuously via the outer circumferential face of recess 23 with elastic mounting part spare 12, thereby the border between axial arbitrary side of each elastic supporting part 16 and the elastic mounting part spare 12 is formed with level and smooth curved surface.By this setting, the free area of the borderline region between axial arbitrary side of elastic mounting part spare 12 and each elastic supporting part 16 is even as big as making stress, and---this stress is subjected to the influence of the displacement of quality part 14 when the vibration input---disperseed, thereby improved durability.Especially in this embodiment, the arbitrary side that makes progress in the week of each elastic supporting part 16 also forms continuously by the outer circumferential face of smooth surface and elastic mounting part spare 12.Therefore, the stress on the borderline region between the outer circumferential face of the arbitrary side that makes progress in week that acts on each elastic supporting part 16 and elastic supporting part 12 is disperseed, thereby further improve durability.In the present embodiment, the smooth curved surface is meant the curved surface that does not have break or broken line.
Next with reference to Fig. 5-7, the cylindrical dynamic damper 26 according to second embodiment of the invention is shown.In the following description, the identical reference character that uses in described embodiment is used to be illustrated in corresponding elements on the 26S Proteasome Structure and Function, so that understand present embodiment.
Particularly, have elastic mounting part spare 28 according to this embodiment's cylindrical dynamic damper 26, an axial end portion of this elastic mounting part spare is outwards outstanding from the axial end portion of quality part 14.One restraint zone (not shown) is fastened on this outstanding end from the outside, and by making this restraint zone tighten and dynamic shock absorber 26 is fixed on the live axle (not shown).
As described in detail, elastic mounting part spare 28 is roughly tubular generally, and its axial dimension is greater than the axial dimension of quality part 14.Near the shallow band that elastic mounting part spare 28 has the end that is formed on an one axial side is admitted groove 30, and this groove circumferentially extends continuously at the outer circumferential face inner opening of this elastic mounting part spare and in the whole circumference upper edge.As shown in Figure 7, the internal diameter size of elastic mounting part spare 28 changes vertically, an axial side that is the tapered portion 32 of elastic mounting part spare 28 in being formed on axial intermediate portion has large-diameter portion 34, and another axial side in tapered portion 32 has minor diameter 36, and the internal diameter of this minor diameter is less than the internal diameter of large-diameter portion 34.Be provided with by this, elastic mounting part spare 28 is thinner in the zone that forms band admittance groove 30, thereby the restraint zone (not shown) can have been given play to its fastening force effectively.For the internal diameter size of elastic mounting part spare 28, the size of large-diameter portion 34 and minor diameter 36 is all less than the outside dimension of live axle.
Elastic mounting part spare 28 and quality part 14 interconnect with the concentric manner setting and by elastic supporting part 16.In other words, as in above-mentioned first embodiment, quality part 14 is flexibly supported via elastic supporting part 16 by elastic mounting part spare 28.In addition, in this embodiment, an axial end portion of elastic mounting part spare 28 stretches out vertically from the end of quality part 14.By this setting, band admits groove 30 to be positioned to from quality part 14 outside vertically.In addition, in this embodiment, another axial end portion of elastic mounting part spare 28 is positioned to from the end of quality part 14 inside a little vertically.
By elastic mounting part spare 28 being force-fitted on the live axle from the outside and tightening, will be fixed on the live axle according to the dynamic shock absorber 26 of this embodiment's structure with the restraint zone (not shown).The internal diameter size of elastic mounting part spare 28 is less than the outside dimension of live axle, thereby the inner peripheral surface of elastic mounting part spare 28 closely contacts with the outer circumferential face of live axle.
Be similar to dynamic shock absorber 10, can bring into play effective damping effect according to the dynamic shock absorber 26 of this embodiment's structure according to first embodiment structure.
In this embodiment, the such dynamic shock absorber 26 that tightens and fix with restraint zone has elastic mounting part spare 28, and the internal diameter of this elastic mounting part spare is force-fitted on the live axle less than the external diameter of live axle and from the outside.Therefore, the inner peripheral surface of elastic mounting part spare 28 closely contacts with the outer circumferential face of live axle, thereby anti-sealing etc. are penetrated between elastic mounting part spare 28 and live axle stacked.In addition, only compare, can realize more firm installment state by elastic mounting part spare 28 is force-fitted on the live axle by the situation that restraint zone is attached on the live axle with dynamic shock absorber 26.
In addition, the dynamic shock absorber 26 of constructing according to this embodiment has elastic mounting part spare 28, and the internal diameter size of this elastic mounting part spare changes vertically so that have thin large-diameter portion 34, and restraint zone is attached on this large-diameter portion.Therefore, dynamic shock absorber 26 can utilize effective fastening force of restraint zone, thereby realizes the firm installment state with respect to live axle.
Although describe the present invention in detail in the currently preferred embodiments that only are used for exemplary purpose, should be appreciated that the present invention is not limited to described embodiment's details, but can have other mode of execution.It is also understood that present invention may be embodied in and have various changes, modification and the improvement that those skilled in the art can expect and can not deviate from the spirit and scope of the present invention.
For example, although in first and second embodiments, elastic supporting part 16 is along circumferentially forming and be provided with even interval, and elastic supporting part 16 and nonessential edge circumferentially are provided with even interval.Especially, be confined under the situation of special diameter direction, can also therefore change rigidity and advantageously realize damping effect by the interval that upwards changes in week between the elastic supporting part 16 at for example input direction of main oscillating load.Simultaneously, although in first and second embodiments, formed the identical elastic supporting part of a plurality of shapes 16, also can change in the rigidity that makes progress in week by the combination that use has a difform elastic supporting part 16.
Elastic supporting part 16 and thin rubber film 24a, 24b preferably are arranged to even number so that avoid the principal elastic axis line of the spring of time vibration system to tilt.But, elastic supporting part 16 and thin rubber film 24a, 24b and the nonessential even number of being arranged to.Perhaps, for example, five elastic supporting parts 16 be can form, and five thin rubber film 24a, 24b add up to along circumferentially forming between the neighbor in these five elastic supporting parts 16.This setting can also avoid the principal elastic axis line of the spring of time vibration system to tilt vertically.Should be appreciated that and above-mentionedly only be used for the elastic supporting part 16 of exemplary purpose and the concrete quantity of thin rubber film 24a, 24b also can suitably be set in addition.
As described in the preferred embodiments, adjacent thin rubber film 24a, 24b preferably tilts along axial direction respect to one another.But adjacent thin rubber film 24a, 24b is also nonessential along axial direction inclination respect to one another.For example, at least one group of adjacent thin rubber film 24a, 24b can tilt along the same axial direction.In addition, thin rubber film 24a, 24b tilt just enough at least vertically.Particularly, thin rubber film 24a, 24b not only can tilt vertically, also can tilt along another direction.
The thickness size of each thin rubber film 24a, 24b need not constant, but can change on the whole at it alternatively.For example, each thin rubber film 24a, 24b are thick in the comparable part in the central of its cardinal extremity part.
In addition, it is constant always that the measuring of the inclination angle of each thin rubber film 24a/24b need not along its diametric(al), but can change alternatively, unless tilt on the contrary vertically.For example, at least one thin rubber film 24a/24b can be greater than the inclination angle of part in the central at the inclination angle of its cardinal extremity part.
Principle of the present invention not only can advantageously be applied to the dynamic shock absorber 10,26 that is used for the described automobile driving axle of above-mentioned first and second embodiments, but also can advantageously be applied to the vibration damping driving force vibration damper of the other types that are used for various vibrating arm parts.
It is also understood that present invention may be embodied in have that those skilled in the art can expect various other change, modification and improvement and can not deviate from the spirit and scope of the present invention defined in the appended claims.
Claims (9)
1. cylindrical dynamic damper (10,26) that is used to be installed on the shaft-like vibration member, this cylindrical dynamic damper comprises:
Tubular secure component (12,28), this tubular secure component are formed by elastomer and are suitable for centering on described shaft-like vibration member setting and being assemblied on this shaft-like vibration member;
Quality part (14), this quality part are that tubulose and having than the big diameter of described tubular secure component (12,28) and with concentric manner is provided with around this tubular secure component (12,28);
A plurality of elastic connecting elements (16), these elastic connecting elements are arranged on the radially corresponding circumferential position place between the opposing side of described tubular secure component (12,28) and described quality part (14), so that along extending with the direction of axis normal; And
A plurality of thin elastic membrane parts (24a, 24b), these elastic membrane parts are arranged on along being integrally formed between the circumferentially adjacent elastic connecting element (16) and with these elastic connecting elements (16), described tubular secure component (12,28) and described quality part (14) by described elastic connecting element (16) and described elastic membrane parts (24a, 24b) flexibly connect each other, make described quality part (14) flexibly be supported by described shaft-like vibration member
Wherein (24a's each elastic membrane parts 24b) tilts towards an axial side, and at least one elastic membrane parts (24b) is compared with other elastic membrane parts (24a) towards relative axial side.
2. cylindrical dynamic damper (10 according to claim 1,26), it is characterized in that described tubular secure component (12,28) be formed with a pair of recess (23), described recess is formed on the axial both sides of each elastic connecting element (16) and along these both sides and extends.
3. cylindrical dynamic damper (10 according to claim 1 and 2,26), it is characterized in that, described a plurality of elastic membrane parts (24a, 24b) comprise even number elastic membrane parts (24a, 24b), and along the circumferentially adjacent elastic membrane parts that are provided with an elastic connecting element (16) therebetween (24a, 24b) oblique to inclination towards disalignment respect to one another.
4. cylindrical dynamic damper (10 according to claim 1 and 2,26), it is characterized in that, described tubular secure component (12,28) internal diameter is less than the external diameter of described shaft-like vibration member, and described tubular secure component (12,28) is force-fitted on the described shaft-like vibration member, thereby this tubular secure component (12,28) is fixedly mounted on the described shaft-like vibration member.
5. cylindrical dynamic damper according to claim 1 and 2 (10,26) is characterized in that, (24a, wall thickness 24b) is in the scope of 0.3-2.0mm for each elastic membrane parts.
6. cylindrical dynamic damper according to claim 1 and 2 (10,26) is characterized in that, each elastic membrane parts (24a, 24b) with respect to along and the inclination angle on the direction of the axis normal plane of extending in ± 20 °-70 ° scope.
7. cylindrical dynamic damper according to claim 1 and 2 (10,26) is characterized in that, (24a, center of gravity 24b) is positioned at along on the central axis of each elastic connecting element (16) that extends with the direction of axis normal each elastic membrane parts.
8. cylindrical dynamic damper according to claim 1 and 2 (10,26) is characterized in that, the fastening tolerance of described tubular secure component (12,28) remains in the scope of 5-30%.
9. cylindrical dynamic damper according to claim 1 and 2 (10,26) is characterized in that, the axial dimension of each elastic connecting element (16) greater than this elastic connecting element with the direction of axis normal on size.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP124275/2006 | 2006-04-27 | ||
| JP2006124275 | 2006-04-27 | ||
| JP140344/2006 | 2006-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101063474A true CN101063474A (en) | 2007-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710104785 Pending CN101063474A (en) | 2006-04-27 | 2007-04-27 | Cylindrical dynamic damper |
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| Country | Link |
|---|---|
| CN (1) | CN101063474A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727174A (en) * | 2014-01-03 | 2014-04-16 | 上汽通用五菱汽车股份有限公司 | Torsion damper |
| CN103851113A (en) * | 2012-12-04 | 2014-06-11 | 苏州三星电子有限公司 | Dynamic shock-absorbing rubber block |
| CN104329409A (en) * | 2014-09-29 | 2015-02-04 | 上汽通用五菱汽车股份有限公司 | Torsional vibration damper for vehicle driving system |
| CN108679138A (en) * | 2018-05-30 | 2018-10-19 | 浙江零跑科技有限公司 | A kind of vibration absorber for automobile transmission shaft |
| CN110509471A (en) * | 2019-07-24 | 2019-11-29 | 南京航空航天大学 | A kind of preparation method of hollow circular rubber parts |
| CN112271677A (en) * | 2020-09-25 | 2021-01-26 | 杭州王之新创信息技术研究有限公司 | Power line cable damper and extra-high voltage transmission network |
-
2007
- 2007-04-27 CN CN 200710104785 patent/CN101063474A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851113A (en) * | 2012-12-04 | 2014-06-11 | 苏州三星电子有限公司 | Dynamic shock-absorbing rubber block |
| CN103727174A (en) * | 2014-01-03 | 2014-04-16 | 上汽通用五菱汽车股份有限公司 | Torsion damper |
| CN103727174B (en) * | 2014-01-03 | 2017-01-18 | 上汽通用五菱汽车股份有限公司 | Torsion damper |
| CN104329409A (en) * | 2014-09-29 | 2015-02-04 | 上汽通用五菱汽车股份有限公司 | Torsional vibration damper for vehicle driving system |
| CN108679138A (en) * | 2018-05-30 | 2018-10-19 | 浙江零跑科技有限公司 | A kind of vibration absorber for automobile transmission shaft |
| CN110509471A (en) * | 2019-07-24 | 2019-11-29 | 南京航空航天大学 | A kind of preparation method of hollow circular rubber parts |
| CN110509471B (en) * | 2019-07-24 | 2021-07-09 | 南京航空航天大学 | Preparation method of hollow annular rubber part |
| CN112271677A (en) * | 2020-09-25 | 2021-01-26 | 杭州王之新创信息技术研究有限公司 | Power line cable damper and extra-high voltage transmission network |
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