CN102537128A - Overrunning clutch with outer ring and flexible cantilevers - Google Patents
Overrunning clutch with outer ring and flexible cantilevers Download PDFInfo
- Publication number
- CN102537128A CN102537128A CN2012100092894A CN201210009289A CN102537128A CN 102537128 A CN102537128 A CN 102537128A CN 2012100092894 A CN2012100092894 A CN 2012100092894A CN 201210009289 A CN201210009289 A CN 201210009289A CN 102537128 A CN102537128 A CN 102537128A
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- submissive
- cantilever
- curved
- straight line
- outer ring
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Abstract
An overrunning clutch with an outer ring and flexible cantilevers is characterized by consisting of an outer ring (1) and an inner ring (2). The outer circle of the inner ring (2) is smooth, a plurality of grooves (6) identical in shape are uniformly distributed on the inner side of the outer ring (1), curved flexible cantilevers (4) in the same number with the grooves (6) are machined between two grooves, each of the curved flexible cantilevers (4) is provided with an inward projection (3), the root of the outer side of the curved flexible cantilever (4) is a small flexible joint (8), and a large flexible joint (7) is arranged between the small flexible joint (8) and the projection (5). By the principle of the flexible cantilevers and the flexible joints, the overrunning clutch consists of two parts only, overcomes defects that the conventional overrunning clutch has parts in large quantity and not easy to be minimized or maintained, and accordingly has wide actual application prospect.
Description
Technical field
The present invention relates to a kind of free wheel device, belong to mechanical field.
Background technique
Free wheel device is used for unidirectional delivery motion or power, and structure is complicated usually, need be made up of many parts.The present invention has utilized the principle of submissive joint and submissive mechanical arm, has designed the free wheel device that has only two parts, is suitable for using in motion of microminiature mechanical transmission or the low-power power.Its part is suitable for processing through injection moulding with nylon or engineering plastics.
Summary of the invention
The objective of the invention is to: design and a kind ofly be applicable to what microminiature machinery used, the free wheel device of only forming by two parts, it is many to overcome present free wheel device part, is not suitable for the shortcoming of microminaturization.
Fig. 1 is the erection drawing of this kind clutch.It is characterized in that: this kind free wheel device has 2 parts to be formed, and is respectively outer ring 1 and inner ring 2 shown in Figure 3 shown in Figure 2; Inner ring 2 cylindricals are smooth rounded; Outer ring 1 complex-shaped, its inboard is uniform-distribution with the identical groove of several shapes 6, and between two grooves, processes the curved submissive cantilever 4 identical with groove 6 quantity; Curved submissive cantilever 4 is defined as its outside near a side of outer ring 1, is defined as its inboard near a side of inner ring 2; The end of curved submissive cantilever 4 has one to its inboard bump 3; The profile of bump 3 is connected with the Archimedes spiral 11 tangent transition that launch counterclockwise with another straight line II12 far away slightly apart from submissive arm top by the straight line I 10 near curved submissive cantilever 4 tops and forms, and is as shown in Figure 5; The radius of curvature at Archimedes spiral 11 and straight line I 10 point of contacts less than with the radius of curvature at straight line II12 point of contact; The root in curved submissive cantilever 4 outsides is little submissive joint 8; Little submissive joint 8 is that curved submissive cantilever 4 is cut out semi-circular recesses in lateral root portion, and curved submissive cantilever 4 is processed in the thickness attenuation of root; Between little submissive joint 8 and protruding 5, big submissive joint 7 is arranged; Big submissive joint 7 is on curved submissive cantilever 4, to process in curved submissive cantilever 4 inboards with the radius of arc greater than little submissive joint 8; There is a convexity 5 in the outside, middle part of curved submissive cantilever 4; Protruding 5 profile is by forming near the straight line III13 of bump 3 with near the straight line IV 14 in little submissive joint 8; Straight line III13 and straight line IV 14 intersect at A point and B point with the lateral profile 15 of curved submissive cantilever 4 respectively; Straight line III13 and submissive cantilever 4 lateral profiles 15 form sharp angle at A point tangent line; Straight line IV 14 forms acute angles beta with the tangent line that lateral profile 15 is ordered at B; Sharp angle is less than about 15 ° to 25 ° of acute angles beta; The shape of groove 6 is identical with protruding 5 shape; Through hole 9 is arranged on the outer ring 1, be used for outer ring 1 is fixed on required equipment.
The working principle of the submissive cantilever free wheel device of outer shroud that the present invention proposes is narrated as follows:
The outer ring 1 of free wheel device uses elastic material to make, and when not being assembled together with inner ring 2, the envelope circular diameter d that the bump 3 on the curved submissive cantilever 4 on it forms is less than the radius of inner ring 2.When being assembled together with inner ring 2 when outer ring 1, resiliently deformables take place with big submissive joint 7 in little submissive joint 8, bump 3 are pressed on the cylindrical of inner ring 2.Fig. 1 is a free wheel device disengaged position schematic representation.Free wheel device outer ring 1 clockwise rotates, and curved submissive cantilever 4 has the trend that is straightened, and Archimedes spiral 11 can't form snap-action with inner ring 2 in the bump 3, so inner ring 2 can't be with outer ring 1 motion; In like manner, when inner ring 2 rotated counterclockwise, outer ring 1 was not also with inner ring 2 motions.Fig. 6 is the schematic representation of free wheel device bonding state.When the free wheel device outer ring rotates counterclockwise, under the rubbing action between bump 3 and the inner ring 2, because the particularity of Archimedes spiral 13; Bump 3 forms snap-action with inner ring 2, and bump 3 rotations arch upward curved submissive cantilever 4 under the effect in big submissive joint 7 and little submissive joint 8 laterally; Protruding 5 get into groove 6 forms engagement; Improve the support stiffness of submissive arm, guaranteed that bump 3 forms interlocking with inner ring 2, driven inner ring 2 motions; In like manner, when inner ring 2 clockwise rotates, also can drive the outer ring motion.
The present invention has only used two parts to form free wheel device according to submissive arm and submissive joint principle, and it is many to have remedied conventional free wheel device part, is difficult for miniaturization, is difficult for the shortcoming of maintenance, makes this free wheel device have wide actual application prospect.
Description of drawings
The submissive cantilever free wheel device of Fig. 1 outer shroud disengaged position figure.
The submissive cantilever free wheel device of Fig. 2 outer shroud outer ring parts drawing.
The submissive cantilever free wheel device of Fig. 3 outer shroud inner ring parts drawing.
Fig. 4 groove 6 enlarged views.
The profile schematic representation of Fig. 5 bump 3.
The submissive cantilever free wheel device of Fig. 6 outer shroud bonding state figure.
Embodiment
Embodiment of the present invention such as Fig. 1-shown in Figure 5.In experiment, use nylon to be material.The outer ring external diameter is 10mm, and the outer ring internal diameter is 8mm, has used 3 grooves 6 and 3 curved submissive cantilevers 4; Groove 6 degree of depth 0.3mm, the α angle is 20 °, the β angle is 45 °; The thickness of curved submissive cantilever 4 is 0.5mm, and the radius in big submissive joint 7 is 1.5mm, and the radius in little submissive joint 8 is 0.2mm; Under unassembled state, the circular diameter d that bump 3 envelopes go out is 4.5mm.The external diameter of inner ring 2 is 6mm, and internal diameter is 4mm.Can transmit 9Nm moment in the experiment.
Claims (1)
1. the submissive cantilever free wheel device of outer shroud is characterized in that:
This kind free wheel device has 2 parts to be formed, and is respectively outer ring (1) and inner ring (2); Inner ring (2) cylindrical is a smooth rounded; Inboard, outer ring (1) is uniform-distribution with the identical groove of several shapes (6), and between two grooves, processes the curved submissive cantilever (4) identical with groove (6) quantity; Curved submissive cantilever (4) is defined as its outside near the side of outer ring (1), is defined as its inboard near a side of inner ring (2); The end of curved submissive cantilever (4) has one to its inboard bump (3); The profile of bump (3) is connected with the tangent transition of Archimedes spiral (11) with the submissive arm of another distance top straight line II (12) far away slightly by the straight line I (10) near curved submissive cantilever (4) top and forms;
The radius of curvature at Archimedes spiral (11) and straight line I (10) point of contact less than with the radius of curvature at straight line II (12) point of contact; The root in curved submissive cantilever (4) outside is little submissive joint (8); Little submissive joint (8) is that curved submissive cantilever (4) is cut out semi-circular recesses in lateral root portion, and curved submissive cantilever (4) is processed in the thickness attenuation of root; Between little submissive joint (8) and protruding (5), big submissive joint (7) is arranged; Big submissive joint (7) is to go up at curved submissive cantilever (4) to process in curved submissive cantilever (4) inboard with the radius of arc greater than little submissive joint (8); There is a convexity (5) in the outside, middle part of curved submissive cantilever (4); The profile of protruding (5) is by forming near the straight line III (13) of bump (3) with near the straight line IV (14) in little submissive joint (8); Straight line III (13) and straight line IV (14) intersect at A point and B point with the lateral profile (15) of curved submissive cantilever (4) respectively; Straight line III (13) forms sharp angle with submissive cantilever (4) lateral profile (15) at A point tangent line; Straight line IV (14) forms acute angles beta with the tangent line that lateral profile (15) is ordered at B; Sharp angle is less than acute angles beta; The shape of groove (6) is identical with the shape of protruding (5); Be useful on the through hole (9) that outer ring (1) is fixing on the outer ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210009289 CN102537128B (en) | 2012-01-12 | 2012-01-12 | Overrunning clutch with outer ring and flexible cantilevers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210009289 CN102537128B (en) | 2012-01-12 | 2012-01-12 | Overrunning clutch with outer ring and flexible cantilevers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102537128A true CN102537128A (en) | 2012-07-04 |
| CN102537128B CN102537128B (en) | 2013-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210009289 Expired - Fee Related CN102537128B (en) | 2012-01-12 | 2012-01-12 | Overrunning clutch with outer ring and flexible cantilevers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537128B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879401A (en) * | 2015-06-08 | 2015-09-02 | 北京联合大学 | Friction overrun clutch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861458A (en) * | 1994-08-23 | 1996-03-08 | Kiyotake Nakamori | Reverse rotation preventing mechanism |
| CN2833226Y (en) * | 2005-03-21 | 2006-11-01 | 蓝国水 | Electric vehicle motor cam self-locking type annular overrunning clutch |
| JP2006322612A (en) * | 2005-04-22 | 2006-11-30 | Kazuo Ishikawa | One-way clutch |
| CN202597546U (en) * | 2012-04-19 | 2012-12-12 | 北京工业大学 | Overrunning clutch with outer ring and flexible cantilevers |
-
2012
- 2012-01-12 CN CN 201210009289 patent/CN102537128B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0861458A (en) * | 1994-08-23 | 1996-03-08 | Kiyotake Nakamori | Reverse rotation preventing mechanism |
| CN2833226Y (en) * | 2005-03-21 | 2006-11-01 | 蓝国水 | Electric vehicle motor cam self-locking type annular overrunning clutch |
| JP2006322612A (en) * | 2005-04-22 | 2006-11-30 | Kazuo Ishikawa | One-way clutch |
| CN202597546U (en) * | 2012-04-19 | 2012-12-12 | 北京工业大学 | Overrunning clutch with outer ring and flexible cantilevers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879401A (en) * | 2015-06-08 | 2015-09-02 | 北京联合大学 | Friction overrun clutch |
| CN104879401B (en) * | 2015-06-08 | 2017-05-03 | 北京联合大学 | Friction overrun clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102537128B (en) | 2013-10-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20140112 |