CN104179834A - Wedge block for overrunning clutch - Google Patents
Wedge block for overrunning clutch Download PDFInfo
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- CN104179834A CN104179834A CN201410446363.8A CN201410446363A CN104179834A CN 104179834 A CN104179834 A CN 104179834A CN 201410446363 A CN201410446363 A CN 201410446363A CN 104179834 A CN104179834 A CN 104179834A
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- wedge
- shaped blocks
- curved surface
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- involute
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Abstract
The invention discloses a wedge block for an overrunning clutch. The wedge block comprises an outer working curved surface and an inner working curved surface. The outer working curved surface is an outer arc with the center of the wedge block as the circle center, and the inner working curved surface is an eccentric involute formed by a base circle with a base circle center as the circle center. By means of the wedge block, the bearing capability of the overrunning clutch can be improved, the contact abrasion is reduced, the service life of the wedge block is prolonged, the reliability is improved, and the wedging performance of the wedge block is improved.
Description
Technical field
The invention belongs to mechanical transmission free wheel device field, be specifically related to a kind of wedge-shaped blocks for free wheel device.
Background technique
Free wheel device belongs to the splendid product structure form of friction type one way clutch, mainly elements such as interior ring, outer shroud, wedge-shaped blocks, retainer, springs, consists of, and wedge-shaped blocks, as clutching member, determines free wheel device service behaviour.The working surface that wedge-shaped blocks contacts with interior ring outer surface is called interior working surface, and the working surface that wedge-shaped blocks contacts with outer ring inner surface is called outer working surface.
In prior art, the wedge-shaped blocks of free wheel device adopts eccentric arc working surface more, and it manufactures and designs simply, is convenient to seriation, modularization, welcomed by the people.But the design of this wedge-shaped blocks, a little less than bearing capacity, easily causes wedge-shaped blocks upset to lose efficacy.Meanwhile, belong to higher pair contact between wedge-shaped blocks and inner and outer rings raceway, the wearing and tearing of working surface are inevitably, and wearing and tearing increase working surface working orthogonal wedge angle, easily cause failure mode.Therefore, conventional wedge-shaped blocks wearing and tearing are large, and working life is short, and a little less than bearing capacity, reliability is low, has limited application and the scope of free wheel device.
Summary of the invention
For solving the technical problem of existing existence, the embodiment of the present invention provides a kind of wedge-shaped blocks for free wheel device, can strengthen the bearing capacity of free wheel device, reduces wearing and tearing, improves working life and reliability, improves the wedging performance of wedge-shaped blocks.
For achieving the above object, the technological scheme of the embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of wedge-shaped blocks of free wheel device, described wedge-shaped blocks comprises outer working curved surface and interior working curved surface, described outer working curved surface is one to take the external arc that wedge-shaped blocks center is the center of circle, and described interior working curved surface is one to take the eccentric involute that basic circle that the basic circle center of circle is the center of circle forms.
In such scheme, the basic circle home position of described eccentric involute is outside wedge-shaped blocks center.
In such scheme, described eccentric involute is to be determined by centre of curvature and radius of curvature, and centre of curvature is positioned on basic circle, and the length of radius of curvature constantly increases to involute end points with involute starting point.
The embodiment of the present invention also provides a kind of wedge-shaped blocks for free wheel device, described wedge-shaped blocks comprises outer working curved surface and interior working curved surface, described outer working curved surface is one to take the external arc that wedge-shaped blocks center is the center of circle, described interior working curved surface is one by eccentric involute and eccentric arc, to be smoothly connected the curved surface forming, and the position that is connected is smooth transition point.
In such scheme, the center of circle of described eccentric arc is on the tangent line of circle involute start position.
In such scheme, described eccentric involute and eccentric arc link position are smooth transition point, and described smooth transition point is the intersection point of basic circle and eccentric arc, and overlaps with involute starting point.
Compared with prior art, beneficial effect of the present invention:
By the present invention, because the continuous increase along with load of the radius of curvature of wedge-shaped blocks working surface increases, contacting between wedge-shaped blocks and interior ring, outer shroud exists juxtaposition metamorphose, cause surface of contact to increase, contact stress diminishes, and has improved the bearing capacity of free wheel device, has reduced contact wear, improve working life and the reliability of wedge-shaped blocks, improved the wedging performance of wedge-shaped blocks.
Accompanying drawing explanation
The structural representation of a kind of wedge-shaped blocks for free wheel device that Fig. 1 provides for the embodiment of the present invention 1;
A kind of structural representation being connected for the wedge-shaped blocks of free wheel device and the inside and outside ring of free wheel device that Fig. 2 provides for the embodiment of the present invention 1;
The structural representation of a kind of wedge-shaped blocks for free wheel device that Fig. 3 provides for the embodiment of the present invention 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1:
The embodiment of the present invention provides a kind of wedge-shaped blocks for free wheel device, as shown in Figure 1, described wedge-shaped blocks 2 comprises interior working curved surface and outer working curved surface, described outer working curved surface is an external arc 13 with the 12Wei center of circle, wedge-shaped blocks center, and described interior working curved surface is one to take the eccentric involute 9 that basic circle 7 that the basic circle center of circle 6 is the center of circle forms.
6 positions, the basic circle center of circle of described eccentric involute 9, outside wedge-shaped blocks center 12, do not overlap with wedge-shaped blocks center 12.
Described eccentric involute 9 is to be determined by centre of curvature 5 and radius of curvature 4, and centre of curvature 5 is positioned on basic circle 7, and the length of radius of curvature 4 constantly increases to involute end points with involute starting point.
Angle of wedge size and the position in the basic circle center of circle 6 and the radius of basic circle 7 of described eccentric involute 9 have relation, can make the setting of the initial wedging angle of wedge very little, be conducive to wedge-shaped blocks 2 and rack lubricant film, make described wedge-shaped blocks 2 rapidly with interior ring outer surface 3 and outer ring inner surface 1 wedging, make the wedging time of free wheel device short, wedging Performance Ratio is sensitiveer.
As shown in Figure 2, described interior working curved surface contacts with interior ring outer surface 3, described outer working curved surface contacts with outer ring inner surface 1, described eccentric involute 9 is involute starting point A with the intersection point of basic circle 7, curved section ABC is that basic circle 7 be take the involute path that involute starting point A forms as rolling initial point, point on eccentric involute 9 is determined by corresponding radius of curvature 4 and centre of curvature 5, radius of curvature 4 increases to involute end points C gradually from involute starting point A, and corresponding centre of curvature 5 changes around basic circle 7 rotations.
As shown in Figure 2, using process when wedge-shaped blocks of the present invention is arranged on free wheel device is: when free wheel device wedging, described wedge-shaped blocks 2 is around 12 rotations of wedge-shaped blocks center, according to Fig. 2, describe, its wedge-shaped blocks 2 sense of rotation are counterclockwise, it is close that the point of contact of described wedge-shaped blocks 2 and interior ring outer surface 3 can progressively slide to involute end points C from point of contact B, the working surface that described wedge-shaped blocks 2 contacts with interior ring outer surface 3, its centre of curvature 5 is around basic circle 7 rotations, and radius of curvature 4 will be along with increase, radius of curvature 4 is larger, described wedge-shaped blocks 2 is less with interior ring outer surface 3 contact stress, thereby can improve the bearing capacity of free wheel device, reduced contact wear, improved the working life of wedge-shaped blocks.
Embodiment 2:
The embodiment of the present invention provides a kind of wedge-shaped blocks for free wheel device, as shown in Figure 3, described wedge-shaped blocks 2 comprises outer working curved surface and interior working curved surface, described outer working curved surface is an external arc 13 with the 12Wei center of circle, wedge-shaped blocks center, described interior working curved surface is one by eccentric involute 9 and eccentric arc 8, to be smoothly connected the curved surface forming, and the position that is connected is smooth transition point 10.
The center of circle of described eccentric arc 8 is on the tangent line of basic circle 7 involute starting point A positions.
Described eccentric involute 9 and eccentric arc 8 link positions are smooth transition point 10, and described smooth transition point 10 is the intersection point of basic circle 7 and eccentric arc 8, and overlaps with involute starting point.
Claims (6)
1. the wedge-shaped blocks of a free wheel device, it is characterized in that: described wedge-shaped blocks (2) comprises outer working curved surface and interior working curved surface, described outer working curved surface is one to take the external arc (13) that wedge-shaped blocks center (12) is the center of circle, and described interior working curved surface is one to take the eccentric involute (9) that basic circle (7) that the basic circle center of circle (6) is the center of circle forms.
2. the wedge-shaped blocks of free wheel device according to claim 1, is characterized in that: the position, the basic circle center of circle (6) of described eccentric involute (9) is outside wedge-shaped blocks center (12).
3. the wedge-shaped blocks of free wheel device according to claim 1 and 2, it is characterized in that: described eccentric involute (9) is to be determined by centre of curvature (5) and radius of curvature (4), it is upper that centre of curvature (5) is positioned at basic circle (7), and the length of radius of curvature (4) constantly increases to involute end points with involute starting point.
4. the wedge-shaped blocks for free wheel device, it is characterized in that: described wedge-shaped blocks 2 comprises outer working curved surface and interior working curved surface, described outer working curved surface is one to take the external arc (13) that wedge-shaped blocks center (12) is the center of circle, described interior working curved surface is one by eccentric involute (9) and eccentric arc (8), to be smoothly connected the curved surface forming, and the position that is connected is smooth transition point (10).
5. according to the wedge-shaped blocks for free wheel device described in right 4, it is characterized in that: the center of circle of described eccentric arc (8) is on the tangent line of basic circle (7) involute start position.
6. according to the wedge-shaped blocks of the free wheel device described in right 4 or 5, it is characterized in that: described eccentric involute (9) and eccentric arc (8) link position are smooth transition point (10), described smooth transition point (10) is the intersection point of basic circle (7) and eccentric arc (8), and overlaps with involute starting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446363.8A CN104179834A (en) | 2014-09-03 | 2014-09-03 | Wedge block for overrunning clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446363.8A CN104179834A (en) | 2014-09-03 | 2014-09-03 | Wedge block for overrunning clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104179834A true CN104179834A (en) | 2014-12-03 |
Family
ID=51961100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410446363.8A Pending CN104179834A (en) | 2014-09-03 | 2014-09-03 | Wedge block for overrunning clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104179834A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236681A (en) * | 2021-06-04 | 2021-08-10 | 人本股份有限公司 | Wedge block of one-way bearing and detection device of wedge block |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3819019A (en) * | 1972-01-31 | 1974-06-25 | Ringspann Maurer Kg A | Sprag for free-wheeling clutch |
| DE3741518A1 (en) * | 1987-12-08 | 1989-06-29 | Klaus Kleinhoff | Frictionally engaged freewheel |
| CN101021234A (en) * | 2006-02-13 | 2007-08-22 | 陈仙鹏 | Wedge block for one-way clutch |
| CN203685933U (en) * | 2014-01-13 | 2014-07-02 | 国营长空精密机械制造公司 | Outer star wheel type involute overrunning clutch |
-
2014
- 2014-09-03 CN CN201410446363.8A patent/CN104179834A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3819019A (en) * | 1972-01-31 | 1974-06-25 | Ringspann Maurer Kg A | Sprag for free-wheeling clutch |
| DE3741518A1 (en) * | 1987-12-08 | 1989-06-29 | Klaus Kleinhoff | Frictionally engaged freewheel |
| CN101021234A (en) * | 2006-02-13 | 2007-08-22 | 陈仙鹏 | Wedge block for one-way clutch |
| CN203685933U (en) * | 2014-01-13 | 2014-07-02 | 国营长空精密机械制造公司 | Outer star wheel type involute overrunning clutch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236681A (en) * | 2021-06-04 | 2021-08-10 | 人本股份有限公司 | Wedge block of one-way bearing and detection device of wedge block |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |
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| WD01 | Invention patent application deemed withdrawn after publication |