CN205605712U - Metal rubber ball pivot - Google Patents
Metal rubber ball pivot Download PDFInfo
- Publication number
- CN205605712U CN205605712U CN201620192297.0U CN201620192297U CN205605712U CN 205605712 U CN205605712 U CN 205605712U CN 201620192297 U CN201620192297 U CN 201620192297U CN 205605712 U CN205605712 U CN 205605712U
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- backstop
- profile
- overcoat
- ball pivot
- interior profile
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Abstract
Metal rubber ball pivot includes dabber, elastic rubber layer and overcoat from inside to outside, and the spindle has the backstop that two axials set up at least, backstop along the even interval distribution of dabber circumferencial direction, and it has along axial through -hole its characterized in that to open between backstop and the overcoat the through -hole surround by the outer profile that is close to the overcoat side, the interior profile that is close to the backstop side and two sides and form, intermural in outer profile and the overcoat have a clearance, has the clearance, two between interior profile and backstop the side symmetric distribution, outer profile be the arc surface coaxial with the overcoat, the outside at profile edge including the edge of outer profile sets up, the arc surface of side for being close to gradually from the outside profile edge in interior profile edge to the convex arc face that the side is advanced for outside profile is protruding. The utility model discloses a metal rubber ball pivot is under the radial deformation condition, and rigidity changes gently and the rubber profile does not give a discount.
Description
Technical field
This utility model relates to a kind of metal-rubber vibration-damped component, has and relates to a kind of metal-rubber ball pivot.
Background technology
Traction class ball pivot product is widely used in rail vehicle and hangs field, it is possible to transmission pull strength, brake force, absorbs vibration, it is achieved flexibly connect and flexibly positioned function.In order to ensure dynamic performance and the comfortableness that vehicle runs, require that product has variation rigidity characteristic, when i.e. deformation of products is less, rigidity is relatively low, it is ensured that the comfortableness that vehicle runs, when deformation increases further, rigidity is gradually increased, and deformation is restricted, and reaches spacing purpose, be conducive to transmission pull strength and brake force, it is ensured that vehicle safety in operation.
For realizing the variation rigidity characteristic of ball pivot product, common mode is perforate on the rubber of product, and ball pivot product includes mandrel, overcoat, backstop and elastic rubbery body.Mandrel, overcoat and backstop are entirety by elastic rubbery body sulfuration, as shown in Figure 1a, rubber described in the center of circle as axle are symmetrically arranged with two pore structures, and described pore structure runs through the axial of described rubber.Pore structure rubber profile between overcoat and mandrel is generally spill, but the design of the open-celled structure of above-mentioned ball pivot product is undesirable, product is in the case of radial direction stand under load, tapping connects the rubber profile of overcoat and mandrel and easily gives a discount near midpoint, stress at this is made to concentrate substantially, ultimately result in rubber to ftracture herein, there is rigidity sudden change and be unfavorable for that rubber product plays vibration damping and flexibly connects effect defect in the variation rigidity design of existing ball pivot product, reason is: along with the increase of load, tapping connects the spill rubber profile of overcoat and mandrel under the conditions of radial deformation, as shown in Figure 1 b, rubber profile only has self-bonding to contact, and not with overcoat, mandrel contacts with backstop laminating, therefore backstop close to but be not provided that any additional stiffness during not in contact with overcoat, now the rigidity of product is less and is basically unchanged；After load increases to a certain degree, backstop contacts with overcoat, deformation is restricted suddenly, and rigidity increases suddenly, thus, metal-rubber ball pivot of the prior art, during stand under load, the stiffness variation of ball pivot is mild not, affects the vibration damping of ball pivot and flexibly connects effect, and easily occur that rubber profile gives a discount, cause rubber to ftracture.
Utility model content
The technical problem that this utility model exists for prior art, it is provided that a kind of under the conditions of radial deformation, the metal-rubber ball pivot that stiffness variation is mild and rubber profile does not gives a discount.
The technical solution of the utility model is: metal-rubber ball pivot, include mandrel from inside to outside, elastic rubber layer and overcoat, at least there are on mandrel two axially arranged backstops, backstop is distributed along mandrel circumferencial direction uniform intervals, through hole vertically is had between backstop and overcoat, it is characterized in that described through hole is by the outer mold surface near overcoat side, composition is surrounded in interior profile and two sides near backstop side, there is between outer mold surface and outer casing inner wall gap, between interior profile and backstop, there is gap, two described sides are symmetrical, described outer mold surface is the arc surface coaxial with overcoat, the edge of outer mold surface is arranged on the outside at interior profile edge, described side is the arc surface moved closer to from outside profile edge, interior profile edge, and side be outside profile convex enter convex globoidal.
Preferably, the thickness of the elastic rubbery body between described outer mold surface and outer casing inner wall is less than 1mm.
Preferably, described interior profile and the upper surface of backstop are the arc surface coaxial with outer mold surface, and the thickness of the elastic rubbery body between described interior profile and backstop upper surface is 1mm ~ 2mm.
Preferably, described interior profile is the curved surface consistent with stop surface, and the upper surface of described backstop and outer mold surface are coaxial circles cambered surface, and the thickness of the described elastic rubbery body between interior profile and backstop is 1mm ~ 2mm.
Preferably, side moves closer to the side of backstop in the middle of cambered surface to interior profile edge.
Preferably, the quantity of described backstop is two.
Preferably, all by arc surface transition between described outer mold surface and side and between interior profile and side.
Through hole offered between backstop and overcoat by metal-rubber ball of the present utility model, between outer mold surface and the overcoat of through hole, there is gap, between interior profile and backstop, there is gap, side is the arc surface moved closer to from outside profile edge, interior profile edge, and side be outside profile convex enter convex globoidal.At metal-rubber ball pivot under conditions of radial deformation, side moves closer to overcoat, the rigidity making metal-rubber ball pivot increases gently, when the interior profile in through hole contacts with outer mold surface, elastic rubber layer between compression outer mold surface and interior profile, makes the rigidity of metal rubber hinge ball pivot increase the most gently, when backstop contacts with overcoat, the deformation of rubber bushing layer is limited, and the rigidity of metal-rubber ball pivot reaches maximum.Due to side be outside profile convex enter convex globoidal, during radial deformation, gum elastic body the most convex enter direction flow deformation in through hole, make through hole side not give a discount in deformation process.
Accompanying drawing explanation
Fig. 1 is the structural representation of metal-rubber ball pivot in prior art；Fig. 1 a is the structural representation under metal-rubber ball pivot free state of the prior art；Fig. 1 b is structural representation during metal-rubber ball pivot compression of the prior art.
Fig. 2 is the cross-sectional of the metal-rubber ball pivot of embodiment one.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the cross-sectional of the metal-rubber ball pivot of embodiment two.
Fig. 5 is the partial enlarged drawing of Fig. 4.
Detailed description of the invention
By drawings and Examples, this utility model will be further described below.
Embodiment one:
nullAs shown in Figures 2 and 3，Metal-rubber ball pivot，Include mandrel 1 from inside to outside、Elastic rubber layer 2 and overcoat 3，At least there are on mandrel 1 two axially arranged backstops 11，Backstop 11 is distributed along mandrel 1 circumferencial direction uniform intervals，Through hole 21 vertically is had between backstop 11 and overcoat 3，It is characterized in that described through hole 21 is by the outer mold surface 21.1 near overcoat side、Composition is surrounded in interior profile 21.2 and two sides 21.3 near backstop side，Between outer mold surface 21.1 and overcoat 3 inwall, there is gap，Between interior profile 21.2 and backstop 11, there is gap，Two described sides 21.3 are symmetrical，Described outer mold surface 21.1 is the arc surface coaxial with overcoat 3，The edge of outer mold surface 21.1 is arranged on the outside at interior profile 21.2 edge，Described side 21.3 is the arc surface moved closer to from outside profile 21.1 edge, interior profile 21.2 edge，And the convex globoidal that side 21.3 is outside profile 21.1 direction.The thickness H1 of the elastic rubbery body 2 between described outer mold surface 21.1 and overcoat 3 inwall is less than 1mm.Described interior profile 21.2 and the upper surface of backstop 11 are the arc surface coaxial with outer mold surface 21.1, and the thickness H2 of the elastic rubbery body 2 between described interior profile 21.2 and backstop 11 upper surface is 1mm ~ 2mm.The quantity of described backstop 11 is two.All by arc surface transition between described outer mold surface 21.1 and side 21.3 and between interior profile 21.2 and side 21.3.
Through hole 21 offered between backstop 11 and overcoat 3 by above-described metal-rubber ball, between outer mold surface 21.1 and the overcoat 3 of through hole, there is the gap that thickness is H1, there is between interior profile 21.2 and backstop 11 gap that thickness is H2, side 21.3 is the arc surface moved closer to from outside profile edge, interior profile edge, and side 21.3 be outside profile 21.1 convex enter convex globoidal.At metal-rubber ball pivot under conditions of radial deformation, side 21.3 moves closer to overcoat 3, the rigidity making metal-rubber ball pivot increases gently, when the interior profile 21.2 in through hole contacts with outer mold surface 21.1, elastic rubber layer between compression outer mold surface 21.1 and interior profile 21.2, makes the rigidity of metal rubber hinge ball pivot increase the most gently, when backstop 11 contacts with overcoat 3, the deformation of rubber bushing layer is limited, and the rigidity of metal-rubber ball pivot reaches maximum.Due to side 21.3 be outside profile 21.1 convex enter convex globoidal, during radial deformation, gum elastic body the most convex enter direction flow deformation in through hole, make through hole side not give a discount in deformation process.
Embodiment two:
As shown in Figure 4 and Figure 5, it is with the difference of embodiment one, described interior profile 21.1 is the curved surface consistent with backstop 11 surface, the upper surface of described backstop 11 and outer mold surface 21.1 are coaxial circles cambered surface, and the thickness H2 of the elastic rubbery body 2 between described interior profile 21.2 and backstop 11 is 1mm ~ 2mm.Side 21.1 moves closer to the side of backstop 11 in the middle of cambered surface to interior profile 21.1 edge.
The metal-rubber ball pivot of embodiment two, condition at radial deformation, side 21.3 moves closer to overcoat 3 and backstop 11, the rigidity making metal-rubber ball pivot increases gently, elastic rubber layer when the interior profile 21.2 in through hole contacts with outer mold surface 21.1, between compression outer mold surface 21.1 and interior profile 21.2, the rigidity making metal rubber hinge ball pivot increases the most gently, when backstop 11 contacts with overcoat 3, the deformation of rubber bushing layer is limited, and the rigidity of metal-rubber ball pivot reaches maximum.Due to side 21.3 be outside profile 21.1 convex enter convex globoidal, during radial deformation, gum elastic body the most convex enter direction flow deformation in through hole, make through hole side not give a discount in deformation process.
Above in association with accompanying drawing, the technical scheme of this utility model embodiment is completely described, it should be noted that described embodiment is only a part of embodiment of this utility model.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained on the premise of not making creative work, broadly fall into the scope of this utility model protection.
Claims (7)
- null1. metal-rubber ball pivot，Include mandrel (1) from inside to outside、Elastic rubber layer (2) and overcoat (3)，At least there are on mandrel (1) two axially arranged backstops (11)，Backstop (11) is distributed along mandrel (1) circumferencial direction uniform intervals，Through hole (21) vertically is had between backstop (11) and overcoat (3)，It is characterized in that described through hole (21) is by the outer mold surface (21.1) near overcoat side、Interior profile (21.2) and two sides (21.3) near backstop side surround composition，Between outer mold surface (21.1) and overcoat (3) inwall, there is gap，Between interior profile (21.2) and backstop (11), there is gap，Two described sides (21.3) are symmetrical，Described outer mold surface (21.1) is the arc surface coaxial with overcoat (3)，The edge of outer mold surface (21.1) is arranged on the outside at interior profile (21.2) edge，Described side (21.3) is the arc surface moved closer to from outside profile (21.1) edge, interior profile (21.2) edge，And side (21.3) be outside profile (21.1) convex enter convex globoidal.
- Metal-rubber ball pivot the most according to claim 1, it is characterised in that the thickness of the elastic rubbery body (2) between described outer mold surface (21.1) and overcoat (3) inwall is less than 1mm.
- Metal-rubber ball pivot the most according to claim 2, it is characterized in that the upper surface of described interior profile (21.2) and backstop (11) is the arc surface coaxial with outer mold surface (21.1), the thickness of the elastic rubbery body (2) between described interior profile (21.2) and backstop (11) upper surface is 1mm ~ 2mm.
- Metal-rubber ball pivot the most according to claim 2, it is characterized in that described interior profile (21.1) is the curved surface consistent with backstop (11) surface, the upper surface of described backstop (11) and outer mold surface (21.1) are coaxial circles cambered surface, and the thickness of the elastic rubbery body (2) between described interior profile (21.2) and backstop (11) is 1mm ~ 2mm.
- Metal-rubber ball pivot the most according to claim 4, it is characterised in that side (21.1) move closer to the side of backstop (11) in the middle of cambered surface to interior profile (21.1) edge.
- 6. according to the metal-rubber ball pivot described in any one of claim 3 to claim 5, it is characterised in that the quantity of described backstop (11) is two.
- Metal-rubber ball pivot the most according to claim 6, it is characterised in that all by arc surface transition between described outer mold surface (21.1) and side (21.3) and between interior profile (21.2) and side (21.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192297.0U CN205605712U (en) | 2016-03-14 | 2016-03-14 | Metal rubber ball pivot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192297.0U CN205605712U (en) | 2016-03-14 | 2016-03-14 | Metal rubber ball pivot |
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| Publication Number | Publication Date |
|---|---|
| CN205605712U true CN205605712U (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620192297.0U Active CN205605712U (en) | 2016-03-14 | 2016-03-14 | Metal rubber ball pivot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111297A (en) * | 2021-03-23 | 2022-09-27 | 山下橡胶株式会社 | Vibration-proof device |
-
2016
- 2016-03-14 CN CN201620192297.0U patent/CN205605712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111297A (en) * | 2021-03-23 | 2022-09-27 | 山下橡胶株式会社 | Vibration-proof device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |