CN102966691B - Cylindrical vibration-isolation device - Google Patents
Cylindrical vibration-isolation device Download PDFInfo
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- CN102966691B CN102966691B CN201210308490.2A CN201210308490A CN102966691B CN 102966691 B CN102966691 B CN 102966691B CN 201210308490 A CN201210308490 A CN 201210308490A CN 102966691 B CN102966691 B CN 102966691B
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Abstract
The isolator has outer cylinder element (14) extrapolated by inner shaft element (12). Inner shaft element is connected to rubber elastic portion (16). One end portion of outer cylinder element is provided with stopper portion (24). Stopper rubber (34) is adhered to stopper portion. Protrusion height of stopper rubber is greater than distance between outer-periphery edge portion of inner shaft element and inner peripheral edge portion of stopper portion. Principal elastic axes of stopper rubber are inclined in outer peripheral surface (38) of stopper rubber.
Description
Technical field
The present invention relates to a kind of cylindrical vibration isolating device with the structure utilizing main rubber elastomer interior shaft component and outer barrel member elasticity to be linked.
Background technique
All the time, as be folded in form vibration passing system component between, vibration isolation links the one of the isolation mounting of these components, is known to cylindrical vibration isolating device.This cylindrical vibration isolating device have utilize the main rubber elastomer of tubular by interior shaft component with separate the structure that the extraterrestrial mutual elasticity of outer barrel member be enclosed within interior shaft component of predetermined distance links.Such as Japanese Laid-Open Patent Publication 60-14627 publication (patent documentation 1) is exactly this cylindrical vibration isolating device.
In addition, in cylindrical vibration isolating device, for the object such as relative shift axially of shaft component and outer barrel member in adjusting axle spring performance upwards or restriction, be sometimes provided with backstop rubber.Namely, also as Patent Document 1, the lip part outstanding towards side, periphery is provided with in an end of the axis of outer barrel member, by configuring backstop rubber on the end face by axial outside of this lip part, thus the mounting object component (automobile body etc.) being provided with interior shaft component is abutted by backstop rubber buffer with lip part.Particularly by the spring performance of axis tuning, abut for the purpose of the avoiding etc. of Strike note, when installing cylindrical vibration isolating device to vehicle, backstop rubber is sandwiched between lip part and automobile body vertically.
But, performance is required in order to meet spring performance, durability etc., expect larger to ensure to a certain degree for this backstop rubber projecting height in the axial direction, if this backstop rubber is pushed by automobile body, then this backstop rubber is sandwiched sometimes the mode resiliently deformable of (between interior shaft component and automobile body) to overwhelm.Its result, the tip portion overwhelming the backstop rubber sandwiched is nipped between the axial end of interior shaft component and automobile body, and it is bad or bring harmful effect to axial spring performance, the elastomeric durability of main rubber etc. likely to produce the installation of installing to vehicle.
In addition, as the structure shown in patent documentation 1, even if ensure larger by the distance between interior shaft component and outer barrel member is out of shape the degree of also not nipping with backstop rubber elasticity, thus nipping of this backstop rubber can be avoided, but in this case, if for guaranteeing the connection area that interior shaft component connects to automobile body fully, be then difficult to the large footpath avoiding outer barrel member.But, the size of outer barrel member is subject to the shape restriction of the mounting construction (inlaid hole etc.) of vehicle side more, when the recent car construction of requirement for height miniaturization and does not allow the large footpath of outer barrel member, require other solutions avoiding backstop rubber to nip.
Patent documentation 1: Japanese Laid-Open Patent Publication 60-14627 publication
Summary of the invention
The present invention with above-mentioned situation for background is made, its problem solved be to provide a kind of can guarantee the rubber volume of backstop rubber and do not need to change interior shaft component, the shape ground of outer barrel member can prevent backstop rubber to nip cylindrical vibration isolating device between interior shaft component and its mounting object component, neotectonics.
1st technological scheme of the present invention is a kind of cylindrical vibration isolating device, it utilizes the main rubber elastomer of tubular interior shaft component and the outer barrel member elasticity be enclosed within this interior shaft component outward to be linked, and blocked part outstanding is to outer peripheral side provided with in an end of the axis of this outer barrel member, the backstop rubber that the oriented axis of fixed bonding is protruding outside on this blocked part, it is characterized in that, the projecting height that above-mentioned backstop rubber is given prominence to from above-mentioned blocked part is larger than the standoff distance between the edge, periphery of an end face of the axis of above-mentioned interior shaft component and the inner peripheral end thereof of this blocked part of above-mentioned outer barrel member, and this backstop rubber more tilts towards the tip side of this backstop rubber along the elastic axis of projected direction more to outer peripheral side relative to axial.
According to the cylindrical vibration isolating device of the structure be formed as based on this 1st technological scheme, because the elastic axis of backstop rubber is relative to axially more tilting more to outer peripheral side towards tip side, therefore utilize the effect of the backstop load (what be arranged on interior shaft component side abuts load by backstop rubber between other component and blocked parts of outer barrel member) putting on backstop rubber, can prevent backstop rubber from rolling distortion to inner circumferential.Therefore, it is possible to the end face preventing backstop rubber from overwhelming the axis sandwiching interior shaft component is nipped between this end face and other components, ensure that the installation strength of interior shaft component, and can effectively realize required spring performance, durability.
In addition, preventing owing to utilizing the shape of backstop rubber and sandwich by the inside shaft component side pressure of backstop rubber unfavorable condition (nipping) generation caused, therefore the supporting portion (blocked part) of the backstop rubber in outer barrel member need not being made away from interior shaft component to prevent from nipping.Therefore, can the area of the axial end of interior shaft component be ensured larger, the effective retention force with other components can be obtained, and avoid the maximization of the cylindrical vibration isolating device caused by the large footpath of outer barrel member, can light weight and realize cylindrical vibration isolating device compactly.
In addition, owing to also can the height dimension of backstop rubber be set larger, therefore, it is possible to ensured by the rubber volume (Free Surface) of backstop rubber comparatively large, the durability of backstop rubber can be improved, increase the tuning degrees of freedom of axial spring performance.Therefore, it is possible to highly meet isolation characteristics, durability etc. to require performance.
2nd technological scheme of the present invention is on the basis of the cylindrical vibration isolating device described in the 1st technological scheme, and above-mentioned backstop rubber adopts by the input of backstop load of axis the compressing rubber of compressive strain.
According to the 2nd technological scheme, by adopting compressing rubber as backstop rubber, thus backstop rubber phase for backstop load input and Toppling Deformation to outer peripheral side (with the distortion of the backstop rubber together that fascinates of the elastic axis along projected direction) reduces, because compressive stress plays a leading role, therefore seek to improve durability.
3rd technological scheme of the present invention is on the basis of the cylindrical vibration isolating device described in the 1st or the 2nd technological scheme, and above-mentioned blocked part is positioned at above-mentioned backstop rubber along on the elongation line of the elastic axis of projected direction.
According to the 3rd technological scheme, be input to the backstop load of backstop rubber owing to being supported along the component in elastic axis direction by blocked part from tip side, therefore the shear deformation of backstop rubber reduces, and compressive strain becomes to take as the leading factor.Therefore, ensure that the durability of backstop rubber, can stably obtain target anti-vibration performance, backstop action.
4th technological scheme of the present invention is on the cylindrical vibration isolating device basis described in the arbitrary technological scheme in the 1st to the 3rd technological scheme, be provided with towards the tapered portion of axial outside undergauge in an end of the axis of above-mentioned outer barrel member, above-mentioned blocked part is located on the end by axial outside of this tapered portion.
According to the 4th technological scheme, an end of the axis of outer barrel member is undergauge by tapered portion, thus can not make the end of the outer circumferential side of blocked part to axes normal direction protruding outside increase blocked part.Therefore, when not needing the maximization of outer barrel member, just the rubber volume of the backstop rubber be fixedly bonded on blocked part being ensured comparatively large, achieving the raising of durability.
5th technological scheme of the present invention is on the basis of cylindrical vibration isolating device described in the arbitrary technological scheme in the 1st to the 4th technological scheme, under the installment state that above-mentioned interior shaft component is arranged on mounting object component, above-mentioned backstop rubber and this mounting object component abut against.
The 5th technological scheme such, under installment state at cylindrical vibration isolating device, backstop rubber and mounting object component abut against when, also by preventing the Toppling Deformation of the inside shaft component side caused to the abutting of mounting object component by backstop rubber, thus the unfavorable condition that backstop rubber nips between the end face of axis of interior shaft component and mounting object component is avoided.Therefore, effectively play the installation strength of interior shaft component to mounting object Components installation, achieve the stable installment state of cylindrical vibration isolating device.
6th technological scheme of the present invention is on the basis of the cylindrical vibration isolating device described in the 5th technological scheme, under above-mentioned installment state, by with the abutting of above-mentioned mounting object component, the compressive strain vertically of above-mentioned backstop rubber, to above-mentioned interior shaft component with maintain abutting of this backstop rubber and this mounting object component between above-mentioned outer barrel member during inputted vibration load.
According to the 6th technological scheme, by preventing backstop rubber from leaving from mounting object component, thus prevent the Strike note produced when backstop rubber clashes into this mounting object component from the position spaced apart with mounting object component.
7th technological scheme of the present invention is on the basis of cylindrical vibration isolating device described in the arbitrary technological scheme in the 1st to the 6th technological scheme, the inner peripheral surface of above-mentioned backstop rubber is formed as being greater than 0 degree relative to the angle of inclination of axis, the inner peripheral surface of this backstop rubber more tilts more to outer peripheral side towards outstanding tip side, and the outer circumferential face of this backstop rubber is formed as less than 0 degree relative to the angle of inclination of axis, and the inner peripheral surface of this backstop rubber is formed as being greater than the absolute value of outer circumferential face relative to the angle of inclination of axis of this backstop rubber relative to the absolute value at the angle of inclination of axis.
According to the 7th technological scheme, backstop rubber is formed as gradually narrow shape, and the top of backstop rubber is presented axially on blocked part.Therefore, when to input backstop load vertically from top for backstop rubber, compressive stress plays a leading role to backstop rubber, seeks the durability that improve backstop rubber.
And, be formed as being greater than the angle of inclination of outer circumferential face relative to axis relative to the angle of inclination of axis by making the inner peripheral surface of backstop rubber, thus the elastic axis of backstop rubber more tilts more to outer peripheral side towards outstanding tip side, prevent backstop rubber by inner circumferential roll fall distortion cause nip.
In addition, when removing the molding die of backstop rubber to axial outside, the inner peripheral surface of backstop rubber and outer circumferential face can not be hooked on the internal surface of molding die, and easily can carry out stripping operation, therefore ease of manufacturing is also excellent.
In addition, in the cylindrical vibration isolating device described in the 7th technological scheme, it is further preferred that the outer circumferential face of above-mentioned backstop rubber is formed as 0 degree relative to the angle of inclination of axis.Accordingly, can not damage backstop rubber phase for the input of backstop load compressive strain, backstop rubber molding time release property, the elastic axis that the projected direction along backstop rubber can be made to extend is relative to axially tilting larger.Therefore, it is possible to more effectively prevent the backstop rubber that caused by the input of backstop load to the Toppling Deformation of inner circumferential side, prevent nipping of the axial end of inside shaft component and other components (mounting object component etc.).
According to the present invention, because the elastic axis of backstop rubber along projected direction more tilts more to outer peripheral side towards outstanding tip side, backstop rubber phase is therefore prevented to roll to inner circumferential for the input of backstop load.Therefore, prevent by backstop rubber nip cause in the reduction etc. of installation strength of shaft component.And, can the projecting height of backstop rubber be ensured larger, seek the durability improving backstop rubber, and the raising that also can realize the installation strength brought by the area of the axial end guaranteeing interior shaft component, the miniaturization etc. of cylindrical vibration isolating device that brought by the path of outer barrel member.
Accompanying drawing explanation
Fig. 1 is the longitudinal section using the state representation of installing to vehicle as the Components installation seat of the 1st mode of execution of the present invention.
Fig. 2 is the plan view of the Components installation seat shown in Fig. 1.
Fig. 3 is the worm's eye view of the Components installation seat shown in Fig. 1.
Fig. 4 is the IV-IV sectional view of Fig. 2.
Fig. 5 is the longitudinal section of the major component of the Components installation seat shown in Watch with magnifier diagram 1.
Fig. 6 is the longitudinal section under the vehicle installment state of the Components installation seat shown in Fig. 1, is the figure representing the state inputting load between interior shaft component and outer barrel member.
Fig. 7 is the longitudinal section that Watch with magnifier is shown as the major component of the Components installation seat into the 2nd mode of execution of the present invention.
Embodiment
Hereinafter, with reference to the accompanying drawings of embodiments of the present invention.
In FIG, as the 1st mode of execution of the cylindrical vibration isolating device be formed as based on structure of the present invention, suspension member fitting seat 10 is shown.Suspension member fitting seat 10 have interior shaft component 12 and outer barrel member 14 separate to be nested inside and outside predetermined distance ground configure, structure that this interior shaft component 12 and outer barrel member 14 are linked by main rubber elastomer 16 elasticity.In addition, in the following description, above-below direction refers to the above-below direction in Fig. 1 in principle.
More specifically, interior shaft component 12 is the components of the high rigidity formed by iron, aluminum alloy etc., as shown in Figure 2 to 4, in the substantially cylindrical shape of heavy wall path.In addition, be provided with wide diameter portion 18 outstanding to outer peripheral side in an end (upper end portion in Fig. 1) of the axis of interior shaft component 12, the area of an end face (junction surface 20) of the axis of interior shaft component 12 is ensured larger.In addition, implement chamfer machining to the edge, periphery, upper end of wide diameter portion 18, the external diameter of the junction surface 20 of interior shaft component 12 becomes less a little than the external diameter of wide diameter portion 18.
Outer barrel member 14 is the components of the high rigidity formed by the material identical with interior shaft component 12, the substantially cylindrical shape in large footpath in thin-walled.In addition, be provided with in an end of the axis of outer barrel member 14 towards the tapered portion 22 of axial outside undergauge.And, blocked part 24 outstanding is to outer peripheral side provided with in an end of the axis of tapered portion 22.The outer peripheral portion of this blocked part 24 is formed as the lip part 26 of roughly Circular Plate shape, and the inner peripheral portion of this blocked part 24 is formed as with more towards the portion that is connected with 28 that the mode of outer circumferential side updip is more gradually bending, thus this blocked part 24 extends from the upper end one of tapered portion 22.
And, be enclosed within interior shaft component 12 outside outer barrel member 14, this interior shaft component 12 and outer barrel member 14 with axes normal direction on cross over complete cycle and configure spaced by a predetermined distance, between this interior shaft component 12 and outer barrel member 14, be folded with main rubber elastomer 16.
Main rubber elastomer 16 is rubber elastomers with substantially cylindrical shape of heavy wall, the overlapping also bonding by Vulcanization of inner peripheral surface of this main rubber elastomer 16 is on the outer circumferential face of interior shaft component 12, and the overlapping also bonding by Vulcanization of outer circumferential face is on the inner peripheral surface of outer barrel member 14.Thus, interior shaft component 12 and outer barrel member 14 are by main rubber elastomer 16 thus along linking with the direction elasticity of axes normal.In addition, the main rubber elastomer 16 of present embodiment is formed as the integrated vulcanizing formed article with interior shaft component 12 and outer barrel member 14.
In addition, main rubber elastomer 16 is formed with the 1st indentation 30.As shown in Figure 2, Figure 4 shows, the 1st indentation 30 is the recesses in an end face upper shed of the axis of main rubber elastomer 16 between interior shaft component 12 and outer barrel member 14, the recess of the ring-type that the section shape being formed as crossing over complete cycle constant extends.In addition, the 1st indentation may not be ring-type, also can circumferentially be formed with multiple 1st indentation.In this case, multiple 1st indentation also can need not to be mutually the same shape, according to required spring performance etc., also can be formed as configurations differing from one.
And, main rubber elastomer 16 is formed the 2nd indentation 32.As shown in Figure 3, Figure 4, the 2nd indentation 32 is the recesses in another end face upper shed of the axis of main rubber elastomer 16 between interior shaft component 12 and outer barrel member 14, is formed with 4 the 2nd indentation 32 circumferentially separating equal intervals.In addition, in the present embodiment, be formed with 4 the 2nd indentation 32 of mutually the same shape, but the 2nd indentation also can be all identical shape, such as, equal according to spring performance required on the fore-and-aft direction and left and right directions of vehicle, also can make the differences such as the length in the circumference of the 2nd indentation, the degree of depth axially.
In addition, on the upper surface of the blocked part 24 of outer barrel member 14, fixed bonding has backstop rubber 34.As shown in Figure 2, Figure 4 shows, backstop rubber 34 is rubber elastomers of the overshooting shape of 4 positions be arranged on circumferentially, in the present embodiment, is integrally formed with main rubber elastomer 16.In addition, backstop rubber 34 is formed as more towards outstanding tip side (in the diagram for upside) more tapered gradually narrow shape, overall in roughly rectangular pyramid shape.In addition, the outstanding top end of backstop rubber 34 is formed as the convex bending face of rounding.In addition, between circumferentially adjacent backstop rubber 34, rubber elastomer and the backstop rubber 34 of annulus tabular are integrally formed, and are fixedly bonded on the upper surface of blocked part 24.
In addition, backstop rubber 34 as shown in Figure 5, the height axially of upper surface apart from lip part 26: H-shaped becomes than the standoff distance between the outer periphery of the junction surface 20 of interior shaft component 12 and the blocked part 24 of outer barrel member 14: D large (H > D).Thereby, it is possible to guarantee the rubber volume of backstop rubber 34 fully, and the area of the junction surface 20 of interior shaft component 12 can be guaranteed, the ever-larger diameters of outer barrel member 14 can be prevented.
This backstop rubber 34 as shown in Figure 5, inner peripheral surface 36 to be formed as towards outstanding tip side with the angle of inclination of regulation: the plane of inclination that θ 1 tilts to outer peripheral side, and outer circumferential face 38 is formed as the angle of inclination relative to axis: θ 2 has been set to the non-inclined face expanded vertically of 0 degree.And inner peripheral surface 36 is formed as being greater than the angle of inclination of outer circumferential face 38 relative to axis relative to the absolute value of the angle of inclination of axis: θ 1: the absolute value (︱ θ 1 ︱ > ︱ θ 2 ︱) of θ 2.In addition, in Figure 5, for inner peripheral surface 36 and outer circumferential face 38 angle of inclination relative to axis, be set to postive direction by from the direction axially rotated counter-clockwise, the angle of inclination of inner peripheral surface 36: θ 1 is formed as being greater than 0 degree (θ 1 > 0).
Thus, backstop rubber 34 along the elastic axis of projected direction: L relative to axially towards the outstanding tip side of backstop rubber 34 with the angle of inclination of regulation: α tilts to outer peripheral side.In the present embodiment, because outer circumferential face 38 is formed as 0 degree relative to the angle of inclination of axis: θ 2, therefore backstop rubber 34 is relative to elastic axis: the absolute value of the angle of inclination of L: α is less than the angle of inclination of inner peripheral surface 36 relative to axis: the absolute value (︱ α ︱ < ︱ θ 1 ︱) of θ 1.
In addition, blocked part 24 is positioned at the elastic axis of backstop rubber 34: on the elongation line of L, this elongation line and blocked part 24 intersection point in Figure 5: P place intersects.Thus, for acting on elastic axis: the input on the direction of L, backstop rubber 34 by support both compression on blocked part 24.
The suspension member fitting seat 10 being formed as so structure is arranged on vehicle as shown in Figure 1 as follows, interior shaft component 12 utilizes and is sandwiching vertically as the assembly department 42 that the automobile body 40 of mounting object component is provided with, and be bolted on automobile body 40, and outer barrel member 14 is pressed into and is fixed in the inlaid hole 46 be located on hanging beam 44.
Under the installment state of installing to this vehicle, backstop rubber 34 is pushed by the assembly department 42 to automobile body 40, is compressed vertically between assembly department 42 and lip part 26.At this, elastic axis due to backstop rubber 34: L is relative to axially with angle of inclination: α tilts, therefore by being compressed vertically between assembly department 42 and lip part 26, thus on backstop rubber 34 except compressive force axially also effect have the moment rotated counter-clockwise making top displacement to outer peripheral side.Therefore, prevent backstop rubber 34 to overwhelm on the junction surface 20 of interior shaft component 12 because of resiliently deformable to sandwich and between the assembly department 42 sandwiching junction surface 20 and automobile body 40.Its result, effectively played by bolt screw bring in retention force between shaft component 12 and automobile body 40, stably achieve sought vehicle installment state.
And, except the inner peripheral surface 36 of backstop rubber 34 more to tilt and the outer circumferential face 38 of backstop rubber 34 more more rolls tiltedly to inner circumferential towards the outstanding tip side of backstop rubber 34 more to outer peripheral side towards the outstanding tip side of backstop rubber 34, the outer circumferential face 38 of backstop rubber 34 is relative to the angle of inclination of axis: θ 2 is also formed as roughly 0 degree.Thus, backstop rubber 34 be formed as when installing to vehicle or input shaft to oscillating load time the effect of backstop load that brings under, axial compressive stress plays a leading role and the main compressing rubber producing compressive strain.Therefore, inhibit the shearing stress brought by the Toppling Deformation of backstop rubber 34, advantageously ensure that the durability of backstop rubber 34.
In addition, when utilizing the molding die shaping be split to form down vertically to have the main rubber elastomer 16 of the 1st, the 2nd indentation 30,32, inner peripheral surface 36 and the outer circumferential face 38 of backstop rubber 34 can not be hooked on molding die, easily can carry out the stripping operation of main rubber elastomer 16.And, by making the angle of inclination of outer circumferential face 38 relative to axis of backstop rubber 34: θ 2 is formed as roughly 0 degree, thus the easiness of the demoulding can be maintained, and the angle of inclination of the elastic axis of backstop rubber 34: L relative to axis: α can be obtained for comparatively large, more effectively avoid backstop rubber 34 and sandwich to overwhelming on junction surface 20.
And, by studying the shape of backstop rubber 34, thus avoid backstop rubber 34 and nip between junction surface 20 and assembly department 42, therefore need not consider to prevent the distance between the edge, periphery that can reduce the junction surface 20 of interior shaft component 12 with nipping of backstop rubber 34 and the blocked part 24 of outer barrel member 14: D.Therefore, achieve suspension member fitting seat 10 axis and with the miniaturization on axes normal direction.
And then, also need not consider that the height of backstop rubber 34 (axial dimension): H can be set as comparatively large to junction surface 20 by backstop rubber 34 with nipping, and therefore achieves by being ensured by the Free Surface of backstop rubber 34 durability brought such as larger to improve.And the tuning degrees of freedom due to the axial elasticity of backstop rubber 34 becomes large, therefore, it is possible to the adjustable region of the spring performance axially of suspension member fitting seat 10 is ensured comparatively large, can tackle to heavens and require characteristic.
In addition, in the present embodiment, as shown in Figure 6, inputted vibration between inside shaft component 12 and outer barrel member 14, when outer barrel member 14 relative to interior shaft component 12 to axial opposite side (being downside in figure 6) relative displacement, maintain the top of backstop rubber 34 and automobile body 40(assembly department 42) between abut.Namely, be arranged on the state on vehicle at suspension member fitting seat 10 under, by the compress variation axially of backstop rubber 34 is ensured larger, thus for the relative displacement axially of interior shaft component 12 with outer barrel member 14, abutting between backstop rubber 34 with assembly department 42 can be maintained while the compress variation reducing backstop rubber 34.Thus, when inputted vibration, backstop rubber 34 there will not be and clashes into the situation of assembly department 42 from the isolated state of assembly department 42, thus decreases the Strike note caused by impact force when abutting.
In addition, the major component of the suspension member fitting seat as the 2nd mode of execution of the present invention has been shown in Fig. 7.That is, the suspension member fitting seat of present embodiment has backstop rubber 50.In addition, to the component identical in fact with the 1st mode of execution and part, by marking identical reference character in the drawings to omit the description.In addition, not shown part is formed as the structure identical with the 1st mode of execution.
More specifically, backstop rubber 50 is integrally formed with main rubber elastomer 16 identically with the backstop rubber 34 of the 1st mode of execution, and the blocked part 24 being fixedly bonded to outer barrel member 14 is given prominence to upward.
In addition, the angle of inclination that specifies relative to axioversion of the inner peripheral surface 52 of backstop rubber 50: θ 1 ', and the angle of inclination that its outer circumferential face 54 specifies relative to axioversion: θ 2 '.And inner peripheral surface 52 is greater than 0 degree relative to the angle of inclination of axis: θ 1 ', inner peripheral surface 52 more tilts more to outer peripheral side towards the outstanding tip side of backstop rubber 50, and outer circumferential face 54 is less than 0 degree relative to the angle of inclination of axis: θ 2 '.Thus, backstop rubber 50 under the shape of longitudinal section in inner peripheral surface 52 with outer circumferential face 54 towards outstanding tip side chevron close to each other.In addition, for the angle of inclination of inner peripheral surface 52 and outer circumferential face 54, positive-angle will be set to from the angle that axially be rotated counterclockwise in the figure 7.
And inner peripheral surface 52 is formed as being greater than the angle of inclination of outer circumferential face 54 relative to axis relative to the absolute value of the angle of inclination of axis: θ 1 ': the absolute value (︱ θ 1 ' ︱ > ︱ θ 2 ' ︱) of θ 2 '.Thus, the elastic axis that the projected direction along backstop rubber 50 extends: the angle of inclination that L ' specifies relative to axioversion: α ', extends in the mode of more toppling over more to outer peripheral side towards the outstanding tip side of backstop rubber 50.
In addition, the angle of inclination of the inner peripheral surface 52 of the backstop rubber 50 of present embodiment: θ 1 ' is formed as the angle of inclination with the inner peripheral surface 36 of the backstop rubber 34 of the 1st mode of execution: θ 1 is identical, and the angle of inclination of the elastic axis of backstop rubber 50: L ': α ' is formed as the elastic axis being less than backstop rubber 34: the angle of inclination of L: α.Even so also as shown in illustrating, make the elastic axis extended along projected direction relative to axioversion, in order to avoid backstop rubber is nipped on the junction surface 20 of interior shaft component 12, the angle of inclination of inner peripheral surface sets larger, and the angle of inclination of outer circumferential face sets less.
In the backstop rubber 50 of suspension member fitting seat being formed as the structure based on this present embodiment, also, identically with the 1st mode of execution under state in the vehicle mounted, be embedded into down vertically between the assembly department 42 and the blocked part 24 of outer barrel member 14 of automobile body 40 and compressive strain.Particularly, the backstop rubber 50 of present embodiment more more rolls tiltedly to inner circumferential towards terminal side due to inner peripheral surface 52, and outer circumferential face 54 more tilts more to outer peripheral side towards terminal side, therefore on backstop rubber 50, compressive stress plays a leading role further, seeks the durability that improve backstop rubber 50.
In addition, angle of inclination relative to axis is formed larger by the inner peripheral surface 52 of backstop rubber 50 compared with outer circumferential face 54, elastic axis: L ' tilts to outer peripheral side along with towards tip side, rolls to inner circumferential when therefore preventing backstop rubber 50 to be compressed between assembly department 42 and blocked part 24 and is out of shape.Therefore, it is possible between the junction surface 20 preventing backstop rubber 50 from sandwiching interior shaft component 12 and assembly department 42, the target installation strength, axle spring characteristic, backstop performance etc. of interior shaft component 12 realize all effectively.In addition, achieve axially and with the miniaturization on axes normal direction identically with the 1st mode of execution, to be improved by the durability guaranteeing to bring of the rubber volume of backstop rubber 50 and the expansion etc. of tuning degrees of freedom of spring performance.
Above, describe embodiments of the present invention in detail, but the present invention not by this specifically record limit.Such as, backstop rubber both can as above-mentioned mode of execution be shown in and be circumferentially provided with split in fact multiple, also can cross over complete cycle and extend in the form of a ring.In addition, when when being circumferentially provided with multiple backstop rubber, the shape of these backstop rubber also can be different from each other, is also not particularly limited in the length of circumference.
And, when when being circumferentially provided with multiple backstop rubber, also the projecting height kick less than backstop rubber can be set between the circumference of these backstop rubber, for by outer barrel member blocked part with abut the impact force brought between mounting object component, play interim buffer function etc.
In addition, if consider buffer function when abutting, then expect that backstop rubber is formed as the gradually narrow shape reduced gradually towards tip side sectional area, but be not necessary, also can extend with identical section shape from cardinal extremity to top, also can become large gradually towards tip side sectional area.
The inner peripheral surface of backstop rubber is relative to the angle of inclination of axis: θ 1 may not be constant, as long as the elastic axis along the projected direction of backstop rubber extends: L more tilts more to outer peripheral side towards tip side, angle of inclination: θ 1 also can change at leisure.In addition, the outer circumferential face of backstop rubber is relative to the angle of inclination of axis: θ 2 is also the same.
In addition, in the above-described embodiment, the inner peripheral surface of backstop rubber more tilts more to outer peripheral side towards tip side, and the outer circumferential face of backstop rubber more more rolls tiltedly to inner circumferential towards tip side, but the inner peripheral surface of backstop rubber and outer circumferential face such as also can be adopted more towards the shape etc. that tip side tilts more to outer peripheral side.
In addition, the attachment force connected to mounting object component (automobile body 40) is also improved comparatively greatly in order to be ensured by junction surface 20, the end being desirably in the axis of interior shaft component 12 arranges wide diameter portion 18, but interior shaft component 12 also can be overall with the linearly extended drum of the section shape of constant.
In addition, be arranged on the state on vehicle at cylindrical vibration isolating device under, backstop rubber may not be pressed to the mounting object component of interior shaft component and be compressed.Namely, backstop rubber both can be carry out with mounting object component abutting the abutting (0 contacts) that pressure is roughly 0 under the state left standstill relative to mounting object component, also can be spaced apart with mounting object component, abutted with mounting object component by inputted vibration.
description of reference numerals
10 suspension member fitting seats (cylindrical vibration isolating device); Shaft component in 12; 14 outer barrel member; 16 main rubber elastomers; 22 tapered portion; 24 blocked parts; 34 backstop rubber; 40 mounting object components.
Claims (13)
1. a cylindrical vibration isolating device, it utilizes the main rubber elastomer (16) of tubular interior shaft component (12) and outer barrel member (14) elasticity be enclosed within this interior shaft component (12) outward to be linked, and blocked part (24) outstanding is to outer peripheral side provided with in an end of the axis of this outer barrel member (14), at the backstop rubber (34,50) that this blocked part (24) upper oriented axis of fixed bonding is protruding outside, it is characterized in that
Above-mentioned backstop rubber (34,50) is larger than the standoff distance between the edge, periphery of an end face of the axis of above-mentioned interior shaft component (12) and the inner peripheral end thereof of this blocked part (24) of above-mentioned outer barrel member (14) from the projecting height (H) that above-mentioned blocked part (24) are outstanding, and this backstop rubber (34,50) is got over to tilt more to outer peripheral side towards the tip side of this backstop rubber (34,50) along the elastic axis (L, L ') of projected direction relative to axis.
2. cylindrical vibration isolating device according to claim 1, wherein,
Above-mentioned backstop rubber (34,50) adopts by the input of backstop load of axis the compressing rubber of compressive strain.
3. cylindrical vibration isolating device according to claim 1, wherein,
Above-mentioned blocked part (24) is positioned at above-mentioned backstop rubber (34,50) along on the elongation line of the elastic axis (L, L ') of projected direction.
4. cylindrical vibration isolating device according to claim 2, wherein,
Above-mentioned blocked part (24) is positioned at above-mentioned backstop rubber (34,50) along on the elongation line of the elastic axis (L, L ') of projected direction.
5. cylindrical vibration isolating device according to claim 1, wherein,
Be provided with towards the tapered portion (22) of axial outside undergauge in an end of the axis of above-mentioned outer barrel member (14), above-mentioned blocked part (24) are located on the end by axial outside of this tapered portion (22).
6. cylindrical vibration isolating device according to claim 2, wherein,
Be provided with towards the tapered portion (22) of axial outside undergauge in an end of the axis of above-mentioned outer barrel member (14), above-mentioned blocked part (24) are located on the end by axial outside of this tapered portion (22).
7. cylindrical vibration isolating device according to claim 3, wherein,
Be provided with towards the tapered portion (22) of axial outside undergauge in an end of the axis of above-mentioned outer barrel member (14), above-mentioned blocked part (24) are located on the end by axial outside of this tapered portion (22).
8. cylindrical vibration isolating device according to claim 4, wherein,
Be provided with towards the tapered portion (22) of axial outside undergauge in an end of the axis of above-mentioned outer barrel member (14), above-mentioned blocked part (24) are located on the end by axial outside of this tapered portion (22).
9. cylindrical vibration isolating device according to any one of claim 1 to 8, wherein,
Under the installment state that above-mentioned interior shaft component (12) is arranged on mounting object component (40), above-mentioned backstop rubber (34,50) and this mounting object component (40) abut against.
10. cylindrical vibration isolating device according to claim 9, wherein,
Under above-mentioned installment state, by with the abutting of above-mentioned mounting object component (40), above-mentioned backstop rubber (34,50) compressive strain vertically, to above-mentioned interior shaft component (12) with maintain abutting of this backstop rubber (34,50) and these mounting object component (40) between above-mentioned outer barrel member (14) during inputted vibration load.
11. cylindrical vibration isolating devices according to any one of claim 1 to 8, wherein,
Above-mentioned backstop rubber (34, 50) inner peripheral surface (36, 52) relative to the angle of inclination (θ 1 of axis, θ 1 ') be formed as being greater than 0 degree, this backstop rubber (34, 50) inner peripheral surface (36, 52) more tilt more to outer peripheral side towards outstanding tip side, and this backstop rubber (34, 50) outer circumferential face (38, 54) relative to the angle of inclination (θ 2 of axis, θ 2 ') be formed as less than 0 degree, and this backstop rubber (34, 50) inner peripheral surface (36, 52) relative to the angle of inclination (θ 1 of axis, θ 1 ') absolute value be formed as being greater than this backstop rubber (34, 50) outer circumferential face (38, 54) relative to the angle of inclination (θ 2 of axis, θ 2 ') absolute value.
12. cylindrical vibration isolating devices according to claim 9, wherein,
Above-mentioned backstop rubber (34, 50) inner peripheral surface (36, 52) relative to the angle of inclination (θ 1 of axis, θ 1 ') be formed as being greater than 0 degree, this backstop rubber (34, 50) inner peripheral surface (36, 52) more tilt more to outer peripheral side towards outstanding tip side, and this backstop rubber (34, 50) outer circumferential face (38, 54) relative to the angle of inclination (θ 2 of axis, θ 2 ') be formed as less than 0 degree, and this backstop rubber (34, 50) inner peripheral surface (36, 52) relative to the angle of inclination (θ 1 of axis, θ 1 ') absolute value be formed as being greater than this backstop rubber (34, 50) outer circumferential face (38, 54) relative to the angle of inclination (θ 2 of axis, θ 2 ') absolute value.
13. cylindrical vibration isolating devices according to claim 10, wherein,
Above-mentioned backstop rubber (34, 50) inner peripheral surface (36, 52) relative to the angle of inclination (θ 1 of axis, θ 1 ') be formed as being greater than 0 degree, this backstop rubber (34, 50) inner peripheral surface (36, 52) more tilt more to outer peripheral side towards outstanding tip side, and this backstop rubber (34, 50) outer circumferential face (38, 54) relative to the angle of inclination (θ 2 of axis, θ 2 ') be formed as less than 0 degree, and this backstop rubber (34, 50) inner peripheral surface (36, 52) relative to the angle of inclination (θ 1 of axis, θ 1 ') absolute value be formed as being greater than this backstop rubber (34, 50) outer circumferential face (38, 54) relative to the angle of inclination (θ 2 of axis, θ 2 ') absolute value.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2011186407A JP5766553B2 (en) | 2011-08-29 | 2011-08-29 | Cylindrical vibration isolator |
| JP2011-186407 | 2011-08-29 |
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| CN102966691B true CN102966691B (en) | 2015-05-13 |
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| JP6149116B2 (en) * | 2013-09-25 | 2017-06-14 | 住友理工株式会社 | Cylindrical vibration isolator |
| CN104455138B (en) * | 2014-11-18 | 2016-10-19 | 沈阳建筑大学 | Double damping couple vibroshocks |
| JP2017096355A (en) * | 2015-11-20 | 2017-06-01 | 東洋ゴム工業株式会社 | Vibration prevention device |
| JP2017096354A (en) * | 2015-11-20 | 2017-06-01 | 東洋ゴム工業株式会社 | Vibration prevention device |
| JP2017101738A (en) * | 2015-12-01 | 2017-06-08 | 住友理工株式会社 | Cylindrical vibration controller device |
| JP6860407B2 (en) * | 2017-04-13 | 2021-04-14 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Stopper |
| DE102017006163B4 (en) | 2017-06-29 | 2022-04-21 | Sumitomo Riko Company Limited | bearing element and bearing |
| JP6719163B2 (en) * | 2017-09-29 | 2020-07-08 | ダイハツ工業株式会社 | Rear suspension |
| JP6914802B2 (en) * | 2017-10-12 | 2021-08-04 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Tire mold |
| JP7487085B2 (en) * | 2020-12-08 | 2024-05-20 | 住友理工株式会社 | Cylindrical vibration isolation device |
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| JP2944989B1 (en) * | 1998-04-30 | 1999-09-06 | 東洋ゴム工業株式会社 | Rubber bush |
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| JPS6014627A (en) * | 1983-07-06 | 1985-01-25 | Nissan Motor Co Ltd | Sleeve-like elastic bush |
| JPH0128358Y2 (en) * | 1986-01-31 | 1989-08-29 | ||
| JPH0258132U (en) * | 1988-10-20 | 1990-04-26 | ||
| JP3477771B2 (en) * | 1993-12-10 | 2003-12-10 | 日産自動車株式会社 | Bush device |
| FR2730973B1 (en) * | 1995-02-28 | 1997-05-16 | Peugeot | ELASTIC ARTICULATION, IN PARTICULAR FOR A MOTOR VEHICLE RUNNING |
| JPH11182598A (en) * | 1997-12-22 | 1999-07-06 | Bridgestone Corp | Vibration control device |
| JP4205424B2 (en) * | 2002-12-27 | 2009-01-07 | 山下ゴム株式会社 | Vibration isolator |
| JP2007137087A (en) * | 2005-11-14 | 2007-06-07 | Suzuki Motor Corp | Rear suspension device of vehicle |
| US8434749B2 (en) * | 2006-05-12 | 2013-05-07 | Vibracoustic North America, L.P. | Body mount assembly |
| JP4622979B2 (en) * | 2006-09-29 | 2011-02-02 | 東海ゴム工業株式会社 | Cylindrical anti-vibration device stopper and cylindrical anti-vibration assembly |
| JP2010276137A (en) * | 2009-05-29 | 2010-12-09 | Bridgestone Corp | Strut mount |
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| JP2944989B1 (en) * | 1998-04-30 | 1999-09-06 | 東洋ゴム工業株式会社 | Rubber bush |
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| JP2013047559A (en) | 2013-03-07 |
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