CN206555277U - A kind of single-freedom and flexible hinge with auto-lock function - Google Patents

A kind of single-freedom and flexible hinge with auto-lock function Download PDF

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Publication number
CN206555277U
CN206555277U CN201720191383.4U CN201720191383U CN206555277U CN 206555277 U CN206555277 U CN 206555277U CN 201720191383 U CN201720191383 U CN 201720191383U CN 206555277 U CN206555277 U CN 206555277U
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China
Prior art keywords
groove
shaped groove
pedestal
flexible hinge
freedom
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Expired - Fee Related
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CN201720191383.4U
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Chinese (zh)
Inventor
徐佳禄
姜峰
言兰
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Huaqiao University
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Huaqiao University
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Abstract

The utility model discloses a kind of single-freedom and flexible hinge with auto-lock function, including pedestal, the one side of the pedestal is provided with the locating shaft for being used for installing flexible hinge.The pedestal sets the groove through the positive back side; groove includes upper transverse groove, step trough, side Z-shaped groove and lower transverse groove, makes the flexible hanging arm of pedestal, the recessed groove in side of the hanging arm of the elasticity by groove; groove constitutes free hinge displacement input, and side Z-shaped groove constitutes portable protective gaps;The displacement input of free hinge makes elastic hanging arm deform and be converted into angle, and the angle is exported by exporting response portion.It has the following advantages that:Elastic hanging arm is located at base interior, and locating shaft is located on pedestal outer surface, and hinge is fixedly mounted input displacement when hinge works will not produce influence;If portable protective gaps, prevent flexible hinge from locally producing expendable plastic deformation, because displacement is excessive and produces and tumbles;Export linear between response portion output angle and the input displacement of displacement input.

Description

A kind of single-freedom and flexible hinge with auto-lock function
Technical field
The utility model is related to flexible hinge design field, more particularly to a kind of single-freedom and flexible 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 are, it is necessary to which high performance Ultra Precision Stages are used 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.Flexible hinge, can be by as a kind of linear scale mechanism of displacement Input displacement equal proportion is zoomed in or out.Because flexible hinge happens is that elastic deformation, therefore zoom in or out the line of ratio Property degree it is good, can be used on positioning table, it is possible to the driving part of lower accuracy, be contracted by displacement equal proportion It is small, obtain higher control accuracy.While flexible hinge structure is compact, small volume, no mechanical friction, gapless can be accomplished, With higher displacement resolution, such as patent CN102705661A, CN102490021A, CN101837586A, Technology disclosed in CN101770182A, CN1669744 etc., is directed to the micro-displacement work table using flexible hinge, and 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, the not plastic deformation failure to flexible hinge proposes effective method for limiting.
Utility model content
The utility model provides a kind of single-freedom and flexible hinge with auto-lock function, which overcomes in background technology Deficiency present in single-freedom and flexible hinge.
The technical scheme used that the utility model solves its technical problem is:
It is solid on a kind of single-freedom and flexible hinge with auto-lock function, including pedestal 10, the one side 11 of the pedestal 10 Provided with boss 12, the locating shaft 13 for installing flexible hinge is installed with the boss 12;The pedestal 10 is set through the positive back side Groove 20, the groove 20 includes transverse groove 21 on one, a upper end and connects the lateral middle of transverse groove 21 and up-small and down-big step trough 22nd, the two ends of side Z-shaped groove 23 and one are respectively turned on the lower transverse groove 24 of the lower end of step trough 22 and side ZZi Cao23 lower ends, by logical Groove 20 makes pedestal 10 have a hanging arm 30 of the elasticity being located in groove 20, the side towards step trough 22 of the hanging arm 30 of the elasticity The recessed groove 31 in face, the groove 31 constitutes free hinge displacement input, and the side Z-shaped groove 23 is construed as limiting elastic hanging arm 30 most Large deformation is with the portable protective gaps of an auto-lock function;The top surface of pedestal 10 is provided with output response portion 40.
Among one embodiment:The side Z-shaped groove 23 and step trough 22 are arranged in the left and right sides of elastic hanging arm 30;Should Groove 20 also includes an opening and is open towards left side V-shaped groove 25, one towards the right translot 27 of side W-shaped groove 26 and 1 first, the side V-arrangement The upper right-hand member of transverse groove 21 is connected in the lower end of groove 25, and the left end of the first translot 27 connects side W-shaped groove 26, the right-hand member of the first translot 27 and side V-shaped groove 25 is spaced, and first translot 27 is located at interval on transverse groove 21.
Among one embodiment:The left end of first translot 27 connects the middle part of side W-shaped groove 26.
Among one embodiment:The groove 20 also include side L-shaped groove 28, the side L-shaped groove 28 be located at side W-shaped groove 26 under and Positioned at a left side for side Z-shaped groove 23.
Among one embodiment:The side L-shaped groove 28 and side W-shaped groove 26 are spaced, and the side L-shaped groove 28 and side Z-shaped groove 23 are spaced.
Among one embodiment:The following lateral arrangement of the side W-shaped groove 26;Two parallel edges of the side Z-shaped groove 23 are vertically arranged.
Among one embodiment:The one side provided with boss 12 is the left surface of pedestal 10.
Among one embodiment:The pedestal 10 is formed using 60Si2CrA steel makings;The width of the portable protective gaps is 30 μm.
The technical program is compared with background technology, and it has the following advantages that:
Install flexible hinge locating shaft be located on the boss of the side of pedestal, groove include upper transverse groove, step trough, Side Z-shaped groove and lower transverse groove, make the flexible hanging arm of pedestal by groove, and the side of elasticity hanging arm towards step trough sets position Input is moved, therefore:A, because elastic hanging arm is arranged on the inside of the pedestal of hinge, locating shaft is located at the side of pedestal outer surface Boss on, therefore when hinge works input displacement on connection (hinge fixed installation) position will not produce influence;B, set protection Gap, prevents the reasons such as operational error and triggers flexible hinge locally to produce expendable plastic deformation, or positioned work What part was produced because displacement is excessive tumbles;C, the displacement input of free hinge make elastic hanging arm deform and be converted into one compared with Small angle, the angle is exported by exporting response portion, makes the input bit of the output response portion output angle and displacement input It is linear between shifting.
Groove also includes side V-shaped groove, side W-shaped groove and the first translot, and upper transverse groove right-hand member, first are connected in side V-shaped groove lower end Translot left end connects side W-shaped groove, the first translot right-hand member and side V-shaped groove interval, and the first translot is located at interval on transverse groove, entered Input displacement produces change to connection when one step avoids the hinge from working, and improves the accuracy of linear relationship.
Groove also includes side L-shaped groove, and input displacement produces change to connection when further avoiding the hinge from working, and improves linear The accuracy of relation.
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 single-freedom and flexible hinge.
Fig. 2 is the left view schematic diagram of single-freedom and flexible hinge.
Fig. 3 is the schematic top plan view of single-freedom and flexible hinge.
Fig. 4 is the schematic diagram of the relation of hinge output angle and input displacement.
Embodiment
Fig. 1, Fig. 2 and Fig. 3, a kind of single-freedom and flexible hinge with auto-lock function, including pedestal 10 are refer to, it is adopted Formed with 60Si2CrA steel makings.
Boss 12 is installed with the one side 11 of the pedestal 10, is installed with the boss 12 for installing determining for flexible hinge Position axle 13, flexible hinge is fixedly mounted by locating shaft 13.The one side provided with boss 12 is the left surface of pedestal 10.This is soft The change of property hinge input displacement will not cause the change of the position of locating shaft 13, will not deform, can guarantee that hinge in itself Position inconvenience.
The pedestal 10 sets the groove 20 through the positive back side, and the groove 20 includes transverse groove 21 on one, a upper end and connected laterally The lateral middle of groove 21 and up-small and down-big step trough 22, side Z-shaped groove 23 and a two ends are respectively turned on the lower end of step trough 22 and side Z The lower transverse groove 24 of the lower end of word groove 23, makes pedestal 10 have a hanging arm 30 of the elasticity being located in groove 20 by groove 20, should Side Z-shaped groove 23 and step trough 22 are arranged in the left and right sides of elastic hanging arm 30.The hanging arm 30 of the elasticity towards ladder The recessed groove 31 in side of groove 22, the groove 31 constitutes free hinge displacement input, and the side Z-shaped groove 23 is construed as limiting elastic suspended The empty maximum distortion of arm 30 is to play the portable protective gaps of auto-lock function, and it can prevent the reasons such as operational error and trigger flexible hinge local Produce expendable plastic deformation, or positioned workpiece due to displacement is excessive and generation is tumbled.
The top surface of pedestal 10 is provided with output response portion 40;The displacement input of the free hinge makes elastic hanging arm 30 deform simultaneously A less angle is converted into, the angle is exported by exporting response portion 40, makes the output angle of output response portion 40 and position It is linear between the input displacement of shifting input.
The groove 20 also includes an opening and is open towards left side V-shaped groove 25, one towards right side W-shaped groove 26, one first translot 27 and side L-shaped groove 28.The upper right-hand member of transverse groove 21 is connected in the lower end of side V-shaped groove 25.The left end of first translot 27 turns on side W shapes The middle part of groove 26, the right-hand member of the first translot 27 and side V-shaped groove 25 are spaced, and first translot 27 is located at interval on transverse groove 21. The side L-shaped groove 28 is located under side W-shaped groove 26 and positioned at a left side for side Z-shaped groove 23.The side L-shaped groove 28 and side W-shaped groove 26 are spaced, should Side L-shaped groove 28 and side Z-shaped groove 23 are spaced.The following lateral arrangement of the side W-shaped groove 26;Two parallel edges of the side Z-shaped groove 23 are vertical Arrangement.
The maximum carrying displacement of the hinge is also related to the material yield strength that hinge is used, using 60Si2CrA steel as Example, its modulus of elasticity is 206GPa, and using the analysis of ANSYS simulation softwares, the input and output drawn are as shown in Figure 4.This is specific In embodiment, such as using four summits of the output response portion 40 of the top surface of pedestal 10 as the foundation for calculating output angle, this is soft Property hinge output input than 6.516E-4 °/μm, its linearity error is within 0.1%.Moreover, the stress emulated from ANSYS As can be seen that hinge operationally meets with stresses lower edge of the maximum position in boss 12 in cloud atlas, ensureing maximum herein On the premise of stress is no more than Materials Yield Limit, maximum input displacement can be controlled to be no more than 30 μm, therefore portable protective gaps are to set It is calculated as 30 μm.
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 the scope of the claims and description all should still belong to this practicality new In the range of type covers.

Claims (8)

1. a kind of single-freedom and flexible hinge with auto-lock function, including pedestal (10), it is characterised in that:The pedestal (10) Boss (12) is installed with one side (11), the locating shaft (13) for installing flexible hinge is installed with the boss (12);Should Pedestal (10) sets the groove (20) through the positive back side, and the groove (20) includes transverse groove (21) on one, a upper end and connects transverse groove (21) lateral middle and up-small and down-big step trough (22), side Z-shaped groove (23) and a two ends are respectively turned under step trough (22) End and the lower transverse groove (24) of side Z-shaped groove (23) lower end, make pedestal (10) have one to be located in groove (20) by groove (20) The hanging arm (30) of elasticity, the recessed groove in side (31) towards step trough (22) of the hanging arm (30) of the elasticity, the groove (31) free hinge displacement input is constituted, the side Z-shaped groove (23) is construed as limiting elastic hanging arm (30) maximum distortion to rise certainly The portable protective gaps of lock function;Pedestal (10) top surface is provided with output response portion (40).
2. a kind of single-freedom and flexible hinge with auto-lock function according to claim 1, it is characterised in that:Side Z Word groove (23) and step trough (22) are arranged in the left and right sides of elastic hanging arm (30);The groove (20) also includes an opening Towards left side V-shaped groove (25), an opening towards right side W-shaped groove (26) and one first translot (27), termination under the side V-shaped groove (25) Logical upper transverse groove (21) right-hand member, the first translot (27) left end connects side W-shaped groove (26), the first translot (27) right-hand member and side V Shape groove (25) is spaced, and first translot (27) is located at interval on transverse groove (21).
3. a kind of single-freedom and flexible hinge with auto-lock function according to claim 2, it is characterised in that:This first Translot (27) left end is connected in the middle part of side W-shaped groove (26).
4. a kind of single-freedom and flexible hinge with auto-lock function according to claim 2, it is characterised in that:The groove (20) also include side L-shaped groove (28), the side L-shaped groove (28) be located at side W-shaped groove (26) under and positioned at side Z-shaped groove (23) it It is left.
5. a kind of single-freedom and flexible hinge with auto-lock function according to claim 4, it is characterised in that:Side L Shape groove (28) and side W-shaped groove (26) interval, the side L-shaped groove (28) and side Z-shaped groove (23) interval.
6. a kind of single-freedom and flexible hinge with auto-lock function according to claim 4, it is characterised in that:Side W The following lateral arrangement of shape groove (26);Two parallel edges of the side Z-shaped groove (23) are vertically arranged.
7. a kind of single-freedom and flexible hinge with auto-lock function according to Claims 2 or 3 or 4 or 5 or 6, it is special Levy and be:The one side that boss (12) should be provided with is the left surface of pedestal (10).
8. a kind of single-freedom and flexible hinge with auto-lock function according to Claims 2 or 3 or 4 or 5 or 6, it is special Levy and be:The pedestal (10) is formed using 60Si2CrA steel makings;The width of the portable protective gaps is 30 μm.
CN201720191383.4U 2017-03-01 2017-03-01 A kind of single-freedom and flexible hinge with auto-lock function Expired - Fee Related CN206555277U (en)

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CN201720191383.4U CN206555277U (en) 2017-03-01 2017-03-01 A kind of single-freedom and flexible hinge with auto-lock function

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763142A (en) * 2017-03-01 2017-05-31 华侨大学 Single-freedom and flexible hinge with auto-lock function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763142A (en) * 2017-03-01 2017-05-31 华侨大学 Single-freedom and flexible hinge with auto-lock function
CN106763142B (en) * 2017-03-01 2023-06-20 华侨大学 Single-degree-of-freedom flexible hinge with self-locking function

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