CN206860672U - A kind of two-freedom flexible hinge with auto-lock function - Google Patents
A kind of two-freedom flexible hinge with auto-lock function Download PDFInfo
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- CN206860672U CN206860672U CN201720192004.3U CN201720192004U CN206860672U CN 206860672 U CN206860672 U CN 206860672U CN 201720192004 U CN201720192004 U CN 201720192004U CN 206860672 U CN206860672 U CN 206860672U
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Abstract
The utility model discloses a kind of two-freedom flexible hinge with auto-lock function, including pedestal, the pedestal front center position is provided with positioning hole；The pedestal offers two grooves, make pedestal that there are the two elastic hanging arms surrounded respectively by two grooves by groove, under the hanging arm free state of one elasticity along X to arrangement and provided with free hinge X to displacement input, arranged under another hanging arm free state of elasticity along Y-direction and the displacement provided with free hinge Y-direction input.Displacement on two free degree directions of X, Y in certain limit can be exported, and two free degree displacements are separate after linear narrowing.Ensure that the installation site of flexible hinge does not deform in loading by designing.Ensure that flexible hinge realizes self-locking before being plastically deformed inside it by the design of flexible hinge internal clearance, avoid the plastic deformation of flexible hinge from failing, improve the service life of flexible hinge.
Description
Technical field
It the utility model is related to flexible hinge design field, more particularly to a kind of two-freedom flexibility with auto-lock function
Hinge.
Background technology
Micromachine, semiconductor lithography, accurate measurement, Ultra-precision Turning, it is miniature match somebody with somebody, biological cell manipulate and nanometer
The fields such as technology, it is necessary to high performance Ultra Precision Stages as technical support.The positioning accurate of Ultra Precision Stages
Degree (output displacement) often reaches sub-micrometer scale, therefore to have the driving part of corresponding precision, design, the manufacture of driving part
Cost all limits the use of Ultra Precision Stages.A kind of linear scale mechanism of the flexible hinge as displacement, it can incite somebody to action
Input displacement equal proportion zooms in or out.Because flexible hinge happens is that elastic deformation, therefore zoom in or out the line of ratio
Property degree is good, can be used on positioning table, it is possible to the driving part of lower accuracy, contracted by displacement equal proportion
It is small, obtain higher control accuracy.While flexible hinge structure is compact, small volume, can accomplish no mechanical friction, gapless,
With higher displacement resolution, as patent CN102705661A, CN102490021A, CN101837586A,
Technology disclosed in CN101770182A, CN1669744 etc., the micro-displacement work table using flexible hinge is directed to, and it is public
The different displacement drive mode such as mechanical, piezoelectric ceramic type and its control feedback system are opened.
But it is disclosed not high to the performance requirement of flexible hinge in patented technology, seldom concern flexible hinge connection pair
The influence of its design performance, not the plastic deformation failure to flexible hinge propose effective method for limiting.
Utility model content
The utility model provides a kind of two-freedom flexible hinge with auto-lock function, which overcomes in background technology
Deficiency present in flexible hinge.
The used technical scheme that the utility model solves its technical problem is：
A kind of two-freedom flexible hinge with auto-lock function, including pedestal 10, the front center position of pedestal 10 are set
There is the positioning hole 11 for installing flexible hinge；The pedestal 10 offers two grooves 20 for running through the positive back side, passes through groove 20
Make pedestal 10 that there are the two hanging arms 30 of the elasticity surrounded respectively by two grooves 20, along X under the hanging free state of arm 30 of an elasticity
To arrangement and the hanging arm 30 of an elasticity be provided with free hinge X to displacement input, the 30 free shape of another hanging arm of elasticity
Arranged under state along Y-direction and another hanging displacement of the arm 30 provided with free hinge Y-direction of elasticity inputs；The cell wall tool of the groove 20
There is a corresponding 30 hanging end of elastic suspended sky arm and towards the supporting walls of displacement input, hanging arm 30 is hanging under the free state
End and supporting walls interval, the interval are construed as limiting the elastic hanging maximum distortion of arm 30 to play the portable protective gaps of auto-lock function；Should
The top surface of pedestal 10 is arranged with the rectangular channel 12 through the positive back side, the correspondence X of the rectangular channel 12 to one side for X to output
Face, the one side of corresponding Y-direction is the output face of Y-direction.
Among one embodiment：The pedestal 10 offers two the first interval troughs 41 for running through the positive back side, one first interval
The interval of groove 41 is located between a groove 20 and positioning hole 11, and another interval of first interval trough 41 is located at another groove 20 and positioning
Between hole 11.
Among one embodiment：The pedestal 10 offers second interval trough 42 for running through the positive back side, second interval trough
42 is L-shaped and both ends are spaced with two first interval troughs 41 respectively, and the interval trough 41 of the second interval trough 42 and two first is by positioning hole
11 are trapped among centre.
Among one embodiment：Also include two the 3rd interval troughs 43, the relative positioning hole 11 of the 3rd interval trough 43 be located at this
Outside the interval of one interval trough 41 and the second interval trough 42.
Among one embodiment：Also include the 4th L-shaped interval trough 44 of two arranged for interval, the 4th interval trough 44 is relatively fixed
Position hole 11 is located at outside second interval trough 42.
Among one embodiment：The groove 20 includes an input slot 21, one first side L-shaped groove 22, a U-lag 23, one and stepped down
The side L-shaped groove 25 of groove 24 and 1 second；The one end of the first side L-shaped groove 22,21 another termination of input slot are connected in the one end of input slot 21
Logical one end of U-lag 23 makes U-lag 23 be open towards side L-shaped groove 22；The other end of U-lag 23 connects slot to make way 24, second side L
Slot to make way 24 is also connected in the one end of shape groove 25, and the side L-shaped groove 25 of U-lag 23 and second is located at the both sides of slot to make way 24, the U-lag respectively
The cell wall of 23 direction input is above-mentioned supporting walls.
Among one embodiment：Also include a L-shaped groove 26, the both ends of L-shaped groove 26 are respectively turned on the slot to make way 24 of two grooves 20.
Among one embodiment：The pedestal 10 is formed using No. 45 steel makings；The X to portable protective gaps width be 8 μm, Y
To portable protective gaps width be 16 μm.
Compared with background technology, it has the following advantages that the technical program：
Displacement on two free degree directions of X, Y in certain limit can be exported after linear narrowing, and two frees degree
Displacement is separate.X (Y) is inputted to during displacement, Y (X) to output displacement keep constant.Ensure flexible hinge by designing
Connection (fixed installation) position does not deform in loading, and (ratio of input and output displacement of the link position to hinge does not have
Influence), ensure flexible hinge reality inside it before being plastically deformed additionally by the design of flexible hinge internal clearance
Existing self-locking, avoids the plastic deformation of flexible hinge from failing, improves the service life of flexible hinge.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the schematic front view of two-freedom flexible hinge.
Fig. 2 is the left view schematic diagram of two-freedom flexible hinge.
Fig. 3 is hinge X to output and the schematic diagram of the relation of input displacement.
Fig. 4 is the output of hinge Y-direction and the schematic diagram of the relation of input displacement.
Embodiment
It refer to Fig. 1 and Fig. 2, a kind of two-freedom flexible hinge with auto-lock function, including pedestal 10, the pedestal 10
Formed using No. 45 steel makings.The front center position of pedestal 10 is provided with the positioning hole 11 for being used for installing flexible hinge, by fixed
Position hole 11 is fixedly attached flexible hinge.
The pedestal 10 offers two grooves 20 for running through the positive back side, pedestal 10 is had two respectively by two by groove 20
The hanging arm 30 of elasticity that groove 20 surrounds, along X to arrangement and the hanging arm of an elasticity under the hanging free state of arm 30 of an elasticity
30 be provided with free hinge X to displacement input, along Y-direction arrangement and another bullet under another hanging free state of arm 30 of elasticity
Property hanging arm 30 be provided with free hinge Y-direction displacement input；The cell wall of the groove 20 is outstanding with a corresponding elastic suspended sky arm 30
Dead end portion and towards the supporting walls of displacement input, the hanging end and supporting walls interval of hanging arm 30 under the free state, should between
Every being construed as limiting the elastic hanging maximum distortion of arm 30 to play the portable protective gaps of auto-lock function.Portable protective gaps are provided with hinge inner,
Ensure flexible hinge self-locking before being plastically deformed, prevent the reasons such as operational error and trigger flexible hinge locally to produce not
Recoverable plastic deformation, or positioned workpiece are tumbled because displacement is excessive and caused.
The top surface of pedestal 10 is arranged with the rectangular channel 12 through the positive back side, the correspondence X of the rectangular channel 12 to one side be X
To output face, the one side of corresponding Y-direction is the output face of Y-direction；By the upward input displacements of X, Y two on elastic hanging arm 30
Linear narrowing, and exported in the same direction by output face, in the range of elastic deformation occurs for flexible hinge, input and output displacement is presented
Good linear relationship.
The pedestal 10 offers two the first interval troughs 41 for running through the positive back side, and one first interval trough 41 interval is located at one
Between groove 20 and positioning hole 11, another interval of first interval trough 41 is located between another groove 20 and positioning hole 11.Pass through
Interval trough interval, one avoids X, Y two, and to during loading, X (Y) direction output displacement is loaded shadow by Y (X) direction in loading procedure
Ring, another one, connection (fixed installation) position of flexible hinge does not deform in loading, input of the link position to hinge
Do not influenceed with the ratio of output displacement.The pedestal 10 offers second interval trough 42 for running through the positive back side, and this is between second
Separate slot 42 is L-shaped and both ends are spaced with two first interval troughs 41 respectively, and the interval trough 41 of the second interval trough 42 and two first will be fixed
Position hole 11 is trapped among centre.The second interval trough is set to make above-mentioned to avoid X from influencing each other to Y-direction and hinge installation influenceed by input
Effect is more preferable.Also include two the 3rd interval troughs 43, the relative positioning hole 11 of the 3rd interval trough 43 is located at the He of the first interval trough 41
Outside the interval of second interval trough 42.Also include the 4th L-shaped interval trough 44 of two arranged for interval, the 4th interval trough 44 is relative
Positioning hole 11 is located at outside second interval trough 42.
The groove 20 includes an input slot 21, one first side L-shaped groove 22, a U-lag 23, a slot to make way 24, one second side L
The L-shaped groove 26 of shape groove 25 and one；The one end of the first side L-shaped groove 22 is connected in the one end of input slot 21, and the other end of input slot 21 connects U-shaped
The one end of groove 23 makes U-lag 23 be open towards side L-shaped groove 22；The other end of U-lag 23 connects slot to make way 24, the second side L-shaped groove
Slot to make way 24 is also connected in 25 one end, and the side L-shaped groove 25 of U-lag 23 and second is located at the both sides of slot to make way 24 respectively, the U-lag 23 it
Cell wall towards input is above-mentioned supporting walls.The both ends of L-shaped groove 26 are respectively turned on the slots to make way 24 of two grooves 20 so that two to be led to
Groove links together.X is avoided to be influenced each other to Y-direction input by the concrete structure of above-mentioned groove.
The maximum carrying displacement of hinge is related to material yield strength used by hinge, by taking No. 45 steel as an example, its elasticity
Modulus is 206GPa, and using the analysis of ANSYS simulation softwares, the input and output displacement drawn is as shown in Figure 3, Figure 4.Simultaneously can be with
Drawing, the output input displacement ratio in X-direction is 0.137 μm/μm, and the output input displacement ratio in Y-direction is 0.286 μm/μm,
Error is within 0.1%.As can be seen that hinge meets with stresses dominant bit at work from the Stress Map of ANSYS emulation
Put at hinge X, Y-direction displacement input face, on the premise of ensureing that maximum stress is no more than Materials Yield Limit herein, control is most
Big X is no more than 16 μm to input displacement, i.e. X is designed as 8 μm to portable protective gaps, and Y-direction input displacement is no more than 8 μm, i.e. Y-direction is protected
Gap is designed as 16 μm.During use：Preferential recommendation first loads Y-direction displacement, reloads X to displacement, hinge can be made to reach higher
Displacement output accuracy.
Positioning hole 11 for installing flexible hinge is located at the front center position of pedestal 10, and the displacement input of flexible hinge is defeated
Go out part and be arranged on the surrounding of connection (fixed installation) position, connection (fixed installation) position in centre is not during hinge work
Change can be subjected to displacement.
It is described above, only the utility model preferred embodiment, therefore the utility model implementation can not be limited according to this
Scope, i.e., the equivalent changes and modifications made according to the utility model patent scope and description, it is new all should still to belong to this practicality
In the range of type covers.
Claims (8)
1. a kind of two-freedom flexible hinge with auto-lock function, including pedestal (10), it is characterised in that：The pedestal (10) is just
Face centre is provided with the positioning hole (11) for being used for installing flexible hinge；The pedestal (10) offers two through the logical of the positive back side
Groove (20), make pedestal (10) that there are the two hanging arms (30) of the elasticity surrounded respectively by two grooves (20) by groove (20), this one
Under elastic hanging arm (30) free state along X to arrangement and the hanging arm (30) of an elasticity be provided with free hinge X to displacement
Input, along Y-direction arrangement and another elasticity, vacantly arm (30) is provided with freely under another hanging arm (30) free state of elasticity
The displacement input of hinge Y-direction；The cell wall of the groove (20) has the hanging end of a corresponding elastic suspended sky arm (30) and towards displacement
The supporting walls of input, the hanging end and supporting walls interval of hanging arm (30) under the free state, the interval is construed as limiting elasticity
Hanging arm (30) maximum distortion is with the portable protective gaps of an auto-lock function；Pedestal (10) top surface is arranged with the rectangle through the positive back side
Groove (12), the correspondence X of the rectangular channel (12) to one side for X to output face, the one side of corresponding Y-direction is the output of Y-direction
Face.
A kind of 2. two-freedom flexible hinge with auto-lock function according to claim 1, it is characterised in that：The pedestal
(10) two the first interval troughs (41) for running through the positive back side are offered, one first interval trough (41) interval is located at a groove (20)
Between positioning hole (11), another first interval trough (41) interval is located between another groove (20) and positioning hole (11).
A kind of 3. two-freedom flexible hinge with auto-lock function according to claim 2, it is characterised in that：The pedestal
(10) second interval trough (42) for running through the positive back side is offered, second interval trough (42) is L-shaped and both ends are respectively with two
First interval trough (41) is spaced, and positioning hole (11) is trapped among centre by second interval trough (42) and two first interval troughs (41).
A kind of 4. two-freedom flexible hinge with auto-lock function according to claim 3, it is characterised in that：Also include
Two the 3rd interval troughs (43), the 3rd interval trough (43) relative positioning hole (11) are located at first interval trough (41) and the second interval
Outside the interval of groove (42).
A kind of 5. two-freedom flexible hinge with auto-lock function according to claim 3, it is characterised in that：Also include
The 4th L-shaped interval trough (44) of two arranged for interval, the 4th interval trough (44) relative positioning hole (11) are located at second interval
Outside groove (42).
6. a kind of two-freedom flexible hinge with auto-lock function according to claim 1 or 2 or 3 or 4 or 5, it is special
Sign is：The groove (20) includes an input slot (21), one first side L-shaped groove (22), a U-lag (23), a slot to make way (24)
With one second side L-shaped groove (25)；First side L-shaped groove (22) one end is connected in input slot (21) one end, and the input slot (21) is another
Logical U-lag (23) one end of termination makes U-lag (23) opening towards side L-shaped groove (22)；U-lag (23) other end connects slot to make way
(24), slot to make way (24), and U-lag (23) and the second side L-shaped groove (25) difference position are also connected in the second side L-shaped groove (25) one end
In slot to make way (24) both sides, the cell wall of the direction input of the U-lag (23) is above-mentioned supporting walls.
A kind of 7. two-freedom flexible hinge with auto-lock function according to claim 6, it is characterised in that：Also include
One L-shaped groove (26), L-shaped groove (26) both ends are respectively turned on the slot to make way (24) of two grooves (20).
8. a kind of two-freedom flexible hinge with auto-lock function according to Claims 2 or 3 or 4 or 5, its feature exist
In：The pedestal (10) is formed using No. 45 steel makings；The X to portable protective gaps width be 8 μm, the width of the portable protective gaps of Y-direction
Spend for 16 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192004.3U CN206860672U (en) | 2017-03-01 | 2017-03-01 | A kind of two-freedom flexible hinge with auto-lock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192004.3U CN206860672U (en) | 2017-03-01 | 2017-03-01 | A kind of two-freedom flexible hinge with auto-lock function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860672U true CN206860672U (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720192004.3U Active CN206860672U (en) | 2017-03-01 | 2017-03-01 | A kind of two-freedom flexible hinge with auto-lock function |
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| CN (1) | CN206860672U (en) |
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- 2017-03-01 CN CN201720192004.3U patent/CN206860672U/en active Active
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