CN110513415A - A kind of stiffness variable flexural pivot and rigidity-changing method - Google Patents
A kind of stiffness variable flexural pivot and rigidity-changing method Download PDFInfo
- Publication number
- CN110513415A CN110513415A CN201910903884.4A CN201910903884A CN110513415A CN 110513415 A CN110513415 A CN 110513415A CN 201910903884 A CN201910903884 A CN 201910903884A CN 110513415 A CN110513415 A CN 110513415A
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- China
- Prior art keywords
- buffer
- rubber
- flexural pivot
- outer ring
- inner ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000011229 interlayer Substances 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 7
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/387—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type comprising means for modifying the rigidity in particular directions
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention provides a kind of stiffness variable flexural pivot, including shell mechanism, which includes outer ring and inner ring, is equipped with rubber-buffer in outer ring and interior interannular;There are along the notch axially through the rubber-buffer in the middle part of the rubber-buffer, and there are deformation gaps in intermarginal outside shell mechanism, with shell mechanism for the equal indent in both ends of rubber-buffer axial direction.Spherical hinge structure uses separate structure in the invention, flexural pivot is not necessarily to carry out circumferential rolling during manufacturing, rubber preloading condition is adjustable in installation, it can be according to different use requirements, the quickly decrement of adjustment pre-pressing, installed structure member can be preferably matched, versatility is good, while manufacturing process is simpler, cost is lower.
Description
Technical field
The invention belongs to bumper and absorbing shock facility technology field, more particularly, to a kind of stiffness variable flexural pivot and variation rigidity
Method.
Background technique
Existing rubber bushing generally has metal-coating, metal core axle and rubber etc. using the structure of monoblock type
Composition, rubber are generally cylindrical in shape between metal core axle and metal-coating, and metal-coating connection metal core axle exists after vulcanization
Together, it is generally difficult to realize the performance requirement of variation rigidity.Although in the prior art, also having using other such as in addition in rubber
The element of metal etc., or make certain part of rubber there are the modes such as gap with metal-coating, to reach the demand of stiffness variation,
But due to being limited by metal core axle and metal-coating structure and space, variation rigidity design method is more single, and using effect is simultaneously
It is undesirable.
Summary of the invention
In view of this, the invention is intended to overcome defect in the prior art, a kind of stiffness variable flexural pivot and change are proposed
Stiffness method.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of stiffness variable flexural pivot, including shell mechanism, which includes outer ring and inner ring, in outer ring and interior interannular
Equipped with rubber-buffer;Outer ring and inner ring are non-enclosed structure.
Further, in the middle part of the rubber-buffer there are along the notch axially through the rubber-buffer, and rubber buffer
The equal indent in the both ends of body axial direction is in shell mechanism, and there are deformation gaps in shell mechanism.
Further, the rubber-buffer is taken shape between inner ring and outer rings by sulfuration process.
Further, there are buffer interlayers between the outer ring and inner ring, and buffer interlayer middle part is narrow, two sides are wide, slow at this
Rush rubber-buffer described in sulfidization molding in interlayer.
Further, there are buffer interlayers between the outer ring and inner ring, and width, two sides are narrow in the middle part of buffer interlayer, slow at this
Rush rubber-buffer described in sulfidization molding in interlayer.
Further, the rubber-buffer includes the sizing support portion at middle part and the buffer part of two sides, is formed by notch
In ω type, including symmetrical two concave part, the arc-shaped slot structure of this two concave part, and cell wall and sizing support portion it
Between and cell wall and buffer part between equal rounding off.
Further, the rounded structure in the side corner of the buffer part close to outer ring.
Further, the rubber-buffer is formed by segmental arc length to be formed by segmental arc long less than or equal to shell mechanism
Degree, that is, rubber-buffer end concave guarantees the effect of buffering deformation in shell mechanism, foring cushion space.
Further, the shell mechanism is formed by segmental arc length≤1/2 circle.
One or more of form can be used in a kind of rigidity-changing method of above-mentioned flexural pivot, flexural pivot:
Inner ring and outer ring decentraction are arranged;
It is different from the diameter of shaft-type part position that flexural pivot axis cooperates that the internal diameter of inner ring is designed as;
The outer diameter of outer ring is designed as different from the installation internal diameter of shell concave inward structure of flexural pivot;
Inner ring is smooth curved-surface structure, and curved surface each section curvature or bending radius be not identical;
Outer ring is smooth curved-surface structure, and curved surface each section curvature or bending radius be not identical;
Change the thickness distribution of rubber-buffer.
Compared with the existing technology, the invention has the advantage that
Spherical hinge structure uses separate structure in the invention, and flexural pivot is not necessarily to carry out circumferential rolling during manufacturing, installs
Middle rubber preloading condition is adjustable, quickly can adjust the decrement of pre-pressing according to different use requirements, can be better
With the structure member installed, versatility is good, while manufacturing process is simpler, cost is lower.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.In
In attached drawing:
Fig. 1 is the structural schematic diagram of the invention;
Fig. 2 is the invention section structure diagram;
Fig. 3 is the structural schematic diagram under the invention application state;
Schematic diagram when Fig. 4 is inner ring, outer ring decentraction in the invention embodiment;
Fig. 5 is when inner ring, outer ring each section curvature or bending radius are designed as not identical in the invention embodiment
Schematic diagram;
Fig. 6 is the schematic diagram in the invention embodiment under use state.
Description of symbols: 1- outer ring;2- inner ring;3- rubber-buffer;4- notch;5- deformation gap;6- buffer interlayer;
7- sizing support portion;8- buffer part;9- concave part;10- rounded structure;11- cushion space;Structural member on the outside of 12- flexural pivot;
13- shaft shoulder structure;The hole 14- shoulder structure;15- flexural pivot axis.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
A kind of stiffness variable flexural pivot, as shown in Figures 1 to 3, including shell mechanism, the shell mechanism include outer ring 1 and inner ring
2, rubber-buffer 3 is equipped in outer ring and interior interannular;Outer ring and inner ring are non-enclosed structure.
There are edges in the middle part of the rubber-buffer axially through the notch 4 of the rubber-buffer, and rubber-buffer is axial
The equal indent in the both ends in direction is in shell mechanism, and intermarginal there are deformation gaps 5 with shell mechanism outermost.Rubber-buffer passes through
Sulfuration process takes shape between inner ring and outer rings, in general, inner ring and outer ring constitute open structure, the two is by rubber-buffer
Secure bond.The slot reservation space of rubber-buffer compressive deformation between set deformation, structural member will not interfere rubber slow
Rush the performance of body performance.
In actual use, flexural pivot can be used to dress form, be also possible to as shown in FIG. 6, the flexural pivot sheet of hinged shaft two sides
Body quantity is not identical, arranges according to actual needs.When flexural pivot axis two sides flexural pivot ontology quantity difference, it is in flexural pivot respectively
The overall width of each flexural pivot ontology of axis two sides be it is identical, ensure that the reliable and stable of structure.
By the structural member 12 on the outside of flexural pivot by flexural pivot banding on flexural pivot axis, meanwhile, on hinged shaft be arranged shaft shoulder structure
13, to annular at limit, to limit outer ring play occurs for inner wall both ends providing holes shoulder structure 14 in shell axis hole part.
In order to facilitate assembly and disassembly, especially to facilitate pre-tightening the adjustment of decrement, the structural member in outside is usually upper and lower two valve bodies, often
Side is equipped with concave inward structure in one valve body, for flexural pivot to be pressed on flexural pivot axis 15.
It should be pointed out that in use, the compressing structure part as outside can be upper and lower two valve structure, and each portion
The concave inward structure of separation structure part is less than or equal to semicircle, is connected and fixed two parts compressing structure part by bolt, guarantees rubber
Compressive state reaches use demand, and it is possible to according to different requirements, quick adjustment bolt pretightning force, and then adjust
The compressive state of rubber operates very easy.
There are buffer interlayers 6 between above-mentioned outer ring and inner ring.In an alternative embodiment, in the middle part of buffer interlayer it is narrow,
Two sides are wide, the rubber-buffer described in sulfidization molding in the buffer interlayer.In another alternative embodiment, in buffer interlayer
Portion is wide, two sides are narrow, the rubber-buffer described in sulfidization molding in the buffer interlayer.
In an alternative embodiment, rubber-buffer includes the buffer part 8 of be formed support portion 7 and the two sides at middle part,
Notch is formed by ω type, including symmetrical two concave part 9 formed on rubber-buffer, this two concave part is in
Curved slot arrangement, and cell wall and sizing support portion between and cell wall and buffer part between equal rounding off.
Above-mentioned buffer part when rubber bodies are loaded, can squeeze buffering close to the rounded structure 10 in the side corner of outer ring
Portion is compressed to barbed portion, and rounded structure design is avoided that stress is concentrated, meanwhile, there is guidance to make the deformation direction of buffer part
With.
Above-mentioned rubber-buffer is formed by segmental arc length and is formed by segmental arc length less than or equal to shell mechanism, that is,
Rubber-buffer end concave is in shell mechanism, foring cushion space 11, and spherical hinge structure is under state of installing and using, structure
Part guarantees the effect of buffering deformation without limitation on the deformation of rubber-buffer.
In general, shell mechanism is formed by segmental arc length≤1/2 circle, it is ensured that flexural pivot after mounting, can be according to practical feelings
Condition adjusts decrement when pre-pressing, better matching unit, to play the performance of flexural pivot.
It should be pointed out that buffer part is directed toward notch when approaching limiting condition (when rubber-buffer decrement is larger)
Part compressive deformation at first, (or perhaps having the tendency that being inserted into notch) can be inserted into notch, rubber-buffer is by estimated
Mode and direction deformation, deformation controllability is strong.Under limiting condition, buffer part is squeezed into notch close to the part of notch, is made up
" deficiency " of the rubber-buffer in barbed portion rigidity, in the case where the power that is hit is very big or the limit is heavily loaded, spherical hinge structure
Better rigidity is obtained again.
In order to realize that variation rigidity designs, on the basis of flexural pivot provided by the present invention, as shown in Figure 4 and Figure 5, spherical hinge structure
One of following scheme or a variety of can be taken:
1, outer ring and inner ring decentraction setting, when inner ring center location with respect to outer ring center location closer to inner ring when, two
The rubber of side is relatively thick, and decrement of the two sides rubber when assembling precompressed can be improved;The center location of outer ring is with respect to inner ring circle
When the heart is located closer to inner ring, then on the contrary.
2, the diameter that the internal diameter of inner ring can be more than or less than the shaft-type part position cooperated with flexural pivot axis can reduce two when being greater than
Decrement of the side rubber when assembling precompressed, it is when being less than, then on the contrary.
3, the internal diameter that the outer diameter of outer ring can be more than or less than the shell concave inward structure of installation flexural pivot can increase by two when being greater than
Decrement of the side rubber when assembling precompressed, it is when being less than, then on the contrary.
4, the thin-walled form of smooth surface thickening can be used in the inner ring of flexural pivot, and the curvature or bending radius of curved surface each section can
It is not identical, so that each position rubber of flexural pivot has different pre compressed magnitudes and different rigidity after mounting.
5, the thin-walled form of smooth surface thickening can be used in the outer ring of flexural pivot, and the curvature or bending radius of curved surface each section can
It is not identical, so that each position rubber of flexural pivot has different pre compressed magnitudes and different rigidity after mounting.
6, by changing the thickness distribution of rubber-buffer, such as make between existing between certain part of rubber-buffer and outer ring
Gap, or there are gap between inner ring, after mounting, the rubber of gap site generally will not be either pre- by compression for rubber bushing
Decrement is less, and then realizes the variation rigidity design of rubber bushing.
Spherical hinge structure uses separate structure in the invention, and flexural pivot is not necessarily to carry out circumferential rolling during manufacturing, installs
Middle rubber preloading condition is adjustable, quickly can adjust the decrement of pre-pressing according to different use requirements, can be better
With the structure member installed, versatility is good, while manufacturing process is simpler, cost is lower.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (10)
1. a kind of stiffness variable flexural pivot, it is characterised in that:
Including shell mechanism, which includes outer ring and inner ring, is equipped with rubber-buffer in outer ring and interior interannular;Outer ring and
Inner ring is non-enclosed structure.
2. a kind of stiffness variable flexural pivot according to claim 1, it is characterised in that: the rubber-buffer passes through vulcanization work
Skill takes shape between inner ring and outer rings.
3. a kind of stiffness variable flexural pivot according to claim 1, it is characterised in that: there are slow between the outer ring and inner ring
Interlayer is rushed, and buffer interlayer middle part is narrow, two sides are wide, the rubber-buffer described in sulfidization molding in the buffer interlayer.
4. a kind of stiffness variable flexural pivot according to claim 1, it is characterised in that: there are slow between the outer ring and inner ring
Interlayer is rushed, and width, two sides are narrow in the middle part of buffer interlayer, the rubber-buffer described in sulfidization molding in the buffer interlayer.
5. a kind of stiffness variable flexural pivot according to claim 1, it is characterised in that: there are edges in the middle part of the rubber-buffer
Axially through the notch of the rubber-buffer, and the equal indent in both ends of rubber-buffer axial direction is in shell mechanism, in shell
There are deformation gaps in structure.
6. a kind of stiffness variable flexural pivot according to claim 5, it is characterised in that: the rubber-buffer includes middle part
The buffer part of sizing support portion and two sides is formed by notch in ω type, including symmetrical two concave part, this two concave part
Arc-shaped slot structure, and cell wall and sizing support portion between and cell wall and buffer part between equal rounding off.
7. a kind of stiffness variable flexural pivot according to claim 1, it is characterised in that: the buffer part is close to the side of outer ring
The rounded structure in corner.
8. a kind of stiffness variable flexural pivot according to claim 1, it is characterised in that: the rubber-buffer is formed by arc
Segment length is less than or equal to the shell mechanism and is formed by segmental arc length.
9. a kind of stiffness variable flexural pivot according to any one of claims 1 to 8, it is characterised in that: the shell mechanism institute
The segmental arc length of formation≤1/2 circle.
10. a kind of rigidity-changing method of flexural pivot described in claim 1, which is characterized in that flexural pivot uses one or more of
Form:
Inner ring and outer ring decentraction are arranged;
It is different from the diameter of shaft-type part position that flexural pivot axis cooperates that the internal diameter of inner ring is designed as;
The outer diameter of outer ring is designed as different from the installation internal diameter of shell concave inward structure of flexural pivot;
Inner ring is smooth curved-surface structure, and curved surface each section curvature or bending radius be not identical;
Outer ring is smooth curved-surface structure, and curved surface each section curvature or bending radius be not identical;
Change the thickness distribution of rubber-buffer.
Priority Applications (1)
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CN201910903884.4A CN110513415A (en) | 2019-09-24 | 2019-09-24 | A kind of stiffness variable flexural pivot and rigidity-changing method |
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CN201910903884.4A CN110513415A (en) | 2019-09-24 | 2019-09-24 | A kind of stiffness variable flexural pivot and rigidity-changing method |
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CN201910903884.4A Pending CN110513415A (en) | 2019-09-24 | 2019-09-24 | A kind of stiffness variable flexural pivot and rigidity-changing method |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112720565A (en) * | 2020-12-21 | 2021-04-30 | 哈尔滨工业大学 | Pneumatic-based continuous variable-rigidity ball joint |
CN113459750A (en) * | 2021-08-06 | 2021-10-01 | 江苏汤臣汽车零部件有限公司 | Four-airbag air suspension system |
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