CN113531001A - Overrunning clutch capable of being used for high-torque transmission - Google Patents
Overrunning clutch capable of being used for high-torque transmission Download PDFInfo
- Publication number
- CN113531001A CN113531001A CN202110727705.3A CN202110727705A CN113531001A CN 113531001 A CN113531001 A CN 113531001A CN 202110727705 A CN202110727705 A CN 202110727705A CN 113531001 A CN113531001 A CN 113531001A
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- China
- Prior art keywords
- wedge
- transmission
- fixture block
- connecting rod
- overrunning clutch
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D2041/0603—Sprag details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention relates to the technical field of one-way clutches and discloses an overrunning clutch capable of being used for high-torque transmission. This can be used to driven freewheel clutch of high moment of torsion to the setting of spacing connecting rod exterior structure for the wedge fixture block under the effect of centrifugal force and when taking place the contact between the inner wall of outer drive circle, and the in-process of continuous clockwise rotation of internal drive piece, can be to the trend of continuous application pressure in order to form self-locking between the surface of wedge fixture block and the inner wall of outer drive circle, and then increased this freewheel clutch to the size of power moment of torsion transmission effectively.
Description
Technical Field
The invention relates to the technical field of one-way clutches, in particular to an overrunning clutch for high-torque transmission.
Background
The overrunning clutch is an important part for power separation and transmission between a driving part and a driven part in a mechanical transmission process, mainly realizes the self-clutch function by changing the rotating directions of the driving part and the driven part, and mainly comprises a wedge block type, a roller type and a ratchet type.
However, the existing sprag-type and roller-type overrunning clutches utilize point contact extrusion friction between inner and outer rings and sprags or rollers to realize power transmission, and when the sprag-type and roller-type overrunning clutches transmit large torque, the inner and outer rings are extremely seriously abraded, and the slip phenomenon is easily caused by the transitional abrasion of the inner and outer rings, so that the transmission size of the overrunning clutch to the torque is further reduced, the service life is short, and the ratchet wheel type overrunning clutch adopts a clamping mode, so that the abrasion to the inner and outer rings and the transmission of the large torque can be reduced;
the ratchet type overrunning clutch can generate strong jerking feeling at the moment of conversion due to the transmission mode of the ratchet type overrunning clutch, and can cause severe impact shock to a driving part or a driven part in the process of frequent separation or power transmission, so that the service life of the mechanical transmission part is seriously influenced, and vibration with high strength and noise pollution can be generated in the using process of the ratchet type overrunning clutch.
Therefore, there is a need for an overrunning clutch capable of transmitting a large torque to overcome the above-mentioned drawbacks of the conventional overrunning clutch.
Disclosure of Invention
Technical problem to be solved
The invention provides an overrunning clutch for high-torque transmission, which has the advantages of capability of transmitting larger torque, no impact shock phenomenon on a transmission part, difficult generation of vibration and noise pollution, and higher stability and reliability, and solves the problems that the existing wedge type and roller type overrunning clutches realize the transmission of power by utilizing point contact extrusion friction between an inner ring and an outer ring and a wedge or a roller, and when the existing overrunning clutch transmits larger torque, the abrasion of the inner ring and the outer ring is very serious, the phenomenon of slipping is easy to occur due to the transitional abrasion of the inner ring and the outer ring, further reducing the transmission size of the torque of the overrunning clutch, having short service life, although the ratchet wheel type overrunning clutch adopts a clamping mode, the abrasion to an inner ring or an outer ring can be reduced, and larger torque can be transmitted; the ratchet type overrunning clutch can generate strong jerking feeling at the moment of conversion due to the transmission mode of the ratchet type overrunning clutch, and can cause severe impact shock to a driving part or a driven part in the process of frequent separation or power transmission, so that the service life of the mechanical transmission part is seriously influenced, and vibration with larger strength and noise pollution can be generated in the using process of the ratchet type overrunning clutch.
(II) technical scheme
The invention provides the following technical scheme: the utility model provides a freewheel clutch that can be used to high torque transmission, includes interior transmission piece, the surface pin joint of interior transmission piece has the support ball, and the surface of interior transmission piece has cup jointed outer transmission circle through supporting the ball activity, both sides are equipped with a set of draw-in groove respectively around the outer transmission circle inner chamber, the inside activity joint of draw-in groove has the snap ring, and the end face of snap ring and the surface of interior transmission piece between the contact each other, fixed recess has been seted up on the surface of interior transmission piece, the outside of interior transmission piece just is located and is equipped with spacing connecting rod among the inner chamber of fixed recess, the surface activity of spacing connecting rod has cup jointed the wedge fixture block, and the both sides of wedge fixture block respectively with fixed recess inner chamber between sliding contact, be connected through reset spring transmission between the end face of wedge fixture block and the one end of spacing connecting rod.
Preferably, the outer part of the limit connecting rod is of an arc structure, and the gap between the limit connecting rod and the inner wall of the outer transmission ring increases gradually along the clockwise rotation direction.
Preferably, the top end of the wedge-shaped fixture block is of a curved surface structure with the same radian as the outer surface of the limiting connecting rod, and the wedge-shaped fixture block is made of a material with better wear resistance.
Preferably, the maximum circular track formed by the movement of the outer surface of the wedge-shaped fixture block under the track of the limiting connecting rod is larger than the circular track formed by the supporting balls.
Preferably, the centrifugal force generated by the wedge-shaped fixture block under the rated clockwise rotation of the inner transmission block is always larger than the elastic force of the return spring.
(III) advantageous effects
The invention has the following beneficial effects:
1. this can be used to driven freewheel clutch of high moment of torsion, to the setting of fixed recess, spacing connecting rod and wedge fixture block on the interior driving block, wherein adopt between the inner wall of wedge fixture block and outer driving ring be the driven mode of face contact extrusion, for current wedge block and roller formula freewheel clutch midpoint contact extrusion driven mode, can alleviate its extrusion wear phenomenon to outer driving ring inner wall or outer lane surface cause effectively, simultaneously, utilize the driven mode of friction can effectively avoid ratchet formula freewheel clutch to produce in the twinkling of an eye of conversion and pause and frustrate, produced vibration and noise pollution are less, and then improved this freewheel clutch's life effectively and stability and reliability in operation process.
2. This can be used to driven freewheel clutch of high moment of torsion to the setting of spacing connecting rod exterior structure for the wedge fixture block under the effect of centrifugal force and when taking place the contact between the inner wall of outer drive circle, and the in-process of continuous clockwise rotation of internal drive piece, can be to the trend of continuous application pressure in order to form self-locking between the surface of wedge fixture block and the inner wall of outer drive circle, and then increased this freewheel clutch to the size of power moment of torsion transmission effectively.
3. This can be used to driven freewheel clutch of high torque, to the setting of wedge fixture block exterior structure, so that it when moving along the orbit of spacing connecting rod, can increase its and the outer area of contact between the drive ring inner wall to the at utmost, and then improved the produced extrusion friction power size of wedge fixture block to outer drive ring effectively, and to the setting of the centrifugal force that wedge fixture block produced under rated clockwise rotational speed, so as to ensure that it can in time take place extrusion contact between the inner wall of drive ring effectively including the clockwise rotation of drive block, and then realize this freewheel clutch to the transmission of power.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structure of the present invention;
FIG. 3 is a schematic structural view of an inner transmission block of the present invention;
fig. 4 is a schematic view of an installation structure of the wedge-shaped fixture block of the present invention.
In the figure: 1. an inner transmission block; 2. supporting the balls; 3. an outer drive ring; 4. a card slot; 5. a snap ring; 6. fixing the groove; 7. a limiting connecting rod; 8. a wedge-shaped fixture block; 9. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an overrunning clutch for high torque transmission includes an inner transmission block 1, a support ball 2 pinned to an outer surface of the inner transmission block 1, an outer transmission ring 3 is movably sleeved on the outer surface of the inner transmission block 1 through a supporting ball 2, a group of clamping grooves 4 are respectively arranged on the front side and the rear side of the inner cavity of the outer transmission ring 3, clamping rings 5 are movably clamped in the clamping grooves 4, the end surface of the snap ring 5 is contacted with the outer surface of the inner transmission block 1, the outer surface of the inner transmission block 1 is provided with a fixed groove 6, a limit connecting rod 7 is arranged outside the inner transmission block 1 and in the inner cavity of the fixed groove 6, the outer surface of the limit connecting rod 7 is movably sleeved with a wedge-shaped fixture block 8, and the two sides of the wedge-shaped fixture block 8 are respectively in sliding contact with the two sides of the inner cavity of the fixed groove 6, and the end surface of the wedge-shaped fixture block 8 is in transmission connection with one end of the limiting connecting rod 7 through a return spring 9.
The arrangement of the wedge-shaped clamping block 8 can effectively avoid the pause and contusion of the ratchet type overrunning clutch generated in the moment of conversion by using a friction transmission mode, severe impact and vibration can not be caused to the driving part or the driven part in the process of frequent separation or power transmission, the generated vibration and noise pollution is less, and the stability and the reliability are higher.
In this technical scheme, the outside of spacing connecting rod 7 is established to the arc structure, and its clearance along the direction of clockwise rotation and between the 3 inner walls of outer drive ring is the trend of gradual change formula increase.
For the arrangement of the fixed groove 6, the limiting connecting rod 7 and the wedge-shaped fixture block 8 on the inner transmission block 1, the moving direction of the wedge-shaped fixture block 8 on the track of the limiting connecting rod 7 is adjusted by utilizing the rotating state of the inner transmission block 1, so that the power separation and transmission between the inner transmission block 1 and the outer transmission ring 3 are realized;
when the inner transmission block 1 rotates clockwise, the wedge-shaped fixture block 8 moves relatively along the track of the limiting connecting rod 7 under the action of centrifugal force, and then contacts with the inner wall of the outer transmission ring 3, so that the transmission of power between the driving part and the driven part is realized, and in the process that the inner transmission block 1 rotates continuously, pressure can be continuously applied between the outer surface of the wedge-shaped fixture block 8 and the inner wall of the outer transmission ring 3 to form a self-locking trend, so that the transmission size of the overrunning clutch to torque is effectively increased;
when the inner transmission block 1 rotates anticlockwise, under the cooperation of the elastic force of the return spring 9, the wedge-shaped fixture block 8 can move relatively along the track of the limiting connecting rod 7 and is separated from the inner wall of the outer transmission ring 3, so that the power transmission between the driving part and the driven part is separated.
In the technical scheme, the top end of the wedge-shaped fixture block 8 is designed to be a curved surface structure with the same radian as the outer surface of the limiting connecting rod 7, and the wedge-shaped fixture block is made of a material with better wear resistance.
The arrangement of the external structure of the wedge-shaped fixture block 8 is convenient for increasing the contact area between the wedge-shaped fixture block 8 and the inner wall of the outer transmission ring 3 to the maximum extent when the wedge-shaped fixture block moves along the track of the limiting connecting rod 7, so that the extrusion friction force of the wedge-shaped fixture block 8 on the outer transmission ring 3 is effectively improved;
meanwhile, for the arrangement of the external structure of the wedge-shaped fixture block 8, a surface contact extrusion transmission mode is adopted between the wedge-shaped fixture block and the inner wall of the outer transmission ring 3, and compared with the traditional wedge-shaped and roller-type overrunning clutch middle point contact extrusion transmission mode, the wear phenomenon of the wedge-shaped and roller-type overrunning clutch on the inner wall or the outer ring surface of the outer transmission ring 3 can be effectively relieved, and the service life of the overrunning clutch and the stability and reliability of the overrunning clutch in the operation process are effectively prolonged.
In the technical scheme, the maximum circular track formed by the movement of the outer surface of the wedge-shaped fixture block 8 under the track of the limiting connecting rod 7 is larger than the circular track formed by the supporting balls 2.
Wherein, to the setting of the biggest circular orbit of wedge fixture block 8 for interior driving block 1 can apply enough big extrusion force in order to realize the power transmission between interior driving block 1 and the outer driving ring 3 to wedge fixture block 8 when clockwise turning, and when interior driving block 1 anticlockwise turning, can make again can be complete break away from between the inner wall of wedge fixture block 8 and outer driving ring 3, and can not produce unnecessary friction loss problem.
In the technical scheme, the centrifugal force generated by the wedge-shaped fixture block 8 under the rated clockwise rotation of the internal transmission block 1 is always larger than the elastic force of the reset spring 9.
The wedge-shaped fixture block 8 is arranged in a centrifugal force generated at a rated clockwise rotation speed, so that the inner transmission block 1 can be effectively in extrusion contact with the inner wall of the outer transmission ring 3 in time when rotating clockwise, a large torque is transmitted, and sufficient extrusion contact between the inner wall of the outer transmission ring 3 and the inner wall of the inner transmission ring due to the influence of the elastic force of the return spring 9 is avoided.
The use method and the working principle of the embodiment are as follows:
the inner transmission block 1 is first connected with the driving part, and the outer transmission ring 3 is connected with the driven part:
when the driving part drives the inner transmission block 1 to rotate clockwise, the wedge-shaped fixture block 8 movably sleeved on the limiting connecting rod 7 is acted by centrifugal force, moves to one side along the track of the limiting connecting rod 7 and compresses the return spring 9, and under the action of the track arranged on the limiting connecting rod 7, the top end of the wedge-shaped fixture block 8 and the inner wall of the outer transmission ring 3 are in contact extrusion, so that the outer transmission ring 3 and a driven part on the outer transmission ring are driven to rotate clockwise, meanwhile, the wedge-shaped fixture block 8 is in a self-locking trend along with the continuous clockwise rotation of the inner transmission block 1, so that the transmission size of the overrunning clutch to torque is effectively increased, and the transmission of power is realized;
when the driving part drives the inner transmission block 1 to rotate anticlockwise, the wedge-shaped fixture block 8 moves to the other side along the track of the limiting connecting rod 7 under the elastic cooperation of the return spring 9, so that the wedge-shaped fixture block and the inner wall of the outer transmission ring 3 are gradually separated and separated, and further the inner transmission block 1 rotates clockwise along with the driving part, the outer transmission ring 3 and a driven part on the outer transmission ring do not rotate therewith, so that the power is separated.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an overrun clutch that can be used to high torque transmission, includes interior transmission piece (1), the surface pin joint of interior transmission piece (1) has support ball (2), and the surface of interior transmission piece (1) has cup jointed outer drive ring (3), its characterized in that through supporting ball (2) activity: both sides are equipped with a set of draw-in groove (4) respectively around outer drive ring (3) inner chamber, the inside activity joint of draw-in groove (4) has snap ring (5), and contacts each other between the terminal surface of snap ring (5) and the surface of interior driving block (1), fixed recess (6) have been seted up on the surface of interior driving block (1), the outside of interior driving block (1) is equipped with spacing connecting rod (7) among the inner chamber that just is located fixed recess (6), wedge fixture block (8) have been cup jointed in the surface activity of spacing connecting rod (7), and the both sides of wedge fixture block (8) respectively with fixed recess (6) inner chamber between sliding contact, be connected through reset spring (9) transmission between the terminal surface of wedge fixture block (8) and the one end of spacing connecting rod (7).
2. An overrunning clutch useful in high torque transmissions according to claim 1, wherein: the outer part of the limiting connecting rod (7) is of an arc structure, and the gap between the limiting connecting rod and the inner wall of the outer transmission ring (3) increases gradually along the clockwise rotation direction.
3. An overrunning clutch useful in high torque transmissions according to claim 2, wherein: the top end of the wedge-shaped fixture block (8) is of a curved surface structure with the same radian as the outer surface of the limiting connecting rod (7), and the wedge-shaped fixture block is made of a material with better wear resistance.
4. An overrunning clutch useful in high torque transmissions according to claim 1, wherein: the maximum circular track formed by the movement of the outer surface of the wedge-shaped fixture block (8) under the track of the limiting connecting rod (7) is larger than the circular track formed by the supporting balls (2).
5. An overrunning clutch useful in high torque transmissions according to claim 4 wherein: the centrifugal force generated by the wedge-shaped fixture block (8) under the rated clockwise rotation of the inner transmission block (1) is always larger than the elastic force of the return spring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110727705.3A CN113531001B (en) | 2021-06-29 | 2021-06-29 | Overrunning clutch capable of being used for high-torque transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110727705.3A CN113531001B (en) | 2021-06-29 | 2021-06-29 | Overrunning clutch capable of being used for high-torque transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113531001A true CN113531001A (en) | 2021-10-22 |
| CN113531001B CN113531001B (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110727705.3A Active CN113531001B (en) | 2021-06-29 | 2021-06-29 | Overrunning clutch capable of being used for high-torque transmission |
Country Status (1)
| Country | Link |
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| CN (1) | CN113531001B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US337021A (en) * | 1886-03-02 | Clutch | ||
| GB1180271A (en) * | 1966-02-23 | 1970-02-04 | Michel Dossier | One-Way Clutch or Brake Apparatus |
| DE3541525A1 (en) * | 1985-11-23 | 1987-05-27 | Kloeckner Humboldt Deutz Ag | Free wheel (one-way clutch) |
| CN202012587U (en) * | 2011-04-19 | 2011-10-19 | 周保民 | Overrun clutch |
| CN104358797A (en) * | 2014-10-22 | 2015-02-18 | 四川大学 | Engagement type overrunning clutch |
| CN106415045A (en) * | 2014-03-27 | 2017-02-15 | 白永九 | One-way clutch and variable transmission comprising same |
| CN107091285A (en) * | 2017-06-28 | 2017-08-25 | 广东工业大学 | A kind of freewheel clutch |
| CN107965532A (en) * | 2017-10-24 | 2018-04-27 | 四川大学 | A kind of non-friction type freewheel clutch |
| US20180328451A1 (en) * | 2015-11-18 | 2018-11-15 | Efneo Sp. Z O.O. | Freewheel mechanism |
| CN109642621A (en) * | 2016-08-30 | 2019-04-16 | Ntn株式会社 | Clutch unit |
| US20200040950A1 (en) * | 2018-07-31 | 2020-02-06 | Schaeffler Technologies AG & Co. KG | Clutch with selectable locked and one-way modes |
-
2021
- 2021-06-29 CN CN202110727705.3A patent/CN113531001B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US337021A (en) * | 1886-03-02 | Clutch | ||
| GB1180271A (en) * | 1966-02-23 | 1970-02-04 | Michel Dossier | One-Way Clutch or Brake Apparatus |
| DE3541525A1 (en) * | 1985-11-23 | 1987-05-27 | Kloeckner Humboldt Deutz Ag | Free wheel (one-way clutch) |
| CN202012587U (en) * | 2011-04-19 | 2011-10-19 | 周保民 | Overrun clutch |
| CN106415045A (en) * | 2014-03-27 | 2017-02-15 | 白永九 | One-way clutch and variable transmission comprising same |
| CN104358797A (en) * | 2014-10-22 | 2015-02-18 | 四川大学 | Engagement type overrunning clutch |
| US20180328451A1 (en) * | 2015-11-18 | 2018-11-15 | Efneo Sp. Z O.O. | Freewheel mechanism |
| CN109642621A (en) * | 2016-08-30 | 2019-04-16 | Ntn株式会社 | Clutch unit |
| CN107091285A (en) * | 2017-06-28 | 2017-08-25 | 广东工业大学 | A kind of freewheel clutch |
| CN107965532A (en) * | 2017-10-24 | 2018-04-27 | 四川大学 | A kind of non-friction type freewheel clutch |
| US20200040950A1 (en) * | 2018-07-31 | 2020-02-06 | Schaeffler Technologies AG & Co. KG | Clutch with selectable locked and one-way modes |
Non-Patent Citations (1)
| Title |
|---|
| 彭斯洋等: "环式超越离合器的数理模型及新型张环式超越离合器", 《机械设计》 * |
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| CN113531001B (en) | 2022-08-02 |
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Effective date of registration: 20220715 Address after: 317500 No. 58-1 Jintang North Road, East New Area, Wenling City, Taizhou City, Zhejiang Province Applicant after: Wenling Guangda Electromagnetic Technology Co.,Ltd. Address before: 136000 group 4, Second Committee, Xinghua street, Fanjiatun Town, Gongzhuling City, Jilin City, Jilin Province Applicant before: Ju Changjun |
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Denomination of invention: An overrunning clutch for high torque transmission Effective date of registration: 20221104 Granted publication date: 20220802 Pledgee: Zhejiang Tyrone commercial bank Limited by Share Ltd. Taizhou Wenling branch Pledgor: Wenling Guangda Electromagnetic Technology Co.,Ltd. Registration number: Y2022980020843 |