WO2021185064A1 - Embrayage à roue libre à double rochet - Google Patents

Embrayage à roue libre à double rochet Download PDF

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Publication number
WO2021185064A1
WO2021185064A1 PCT/CN2021/078569 CN2021078569W WO2021185064A1 WO 2021185064 A1 WO2021185064 A1 WO 2021185064A1 CN 2021078569 W CN2021078569 W CN 2021078569W WO 2021185064 A1 WO2021185064 A1 WO 2021185064A1
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WO
WIPO (PCT)
Prior art keywords
ratchet
driven
driving
tooth
pawl
Prior art date
Application number
PCT/CN2021/078569
Other languages
English (en)
Chinese (zh)
Inventor
尹世和
Original Assignee
尹世和
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010185917.9A external-priority patent/CN111473065A/zh
Priority claimed from CN202020332459.2U external-priority patent/CN212250891U/zh
Application filed by 尹世和 filed Critical 尹世和
Publication of WO2021185064A1 publication Critical patent/WO2021185064A1/fr

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Classifications

    • 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
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like

Definitions

  • the invention relates to a one-way clutch, in particular to a double ratchet one-way clutch.
  • the ratchet clutch is a kind of one-way clutch, which is divided into two types: external meshing and internal meshing ratchet clutch.
  • the currently disclosed double-ratcheting one-way clutch prevents the pawl from hitting the surface of the ratchet by the way that the tooth tip of the driving ratchet and the tooth tip of the driven ratchet are complementary in the axial direction.
  • the force and the degree of wear are different, and it is difficult to ensure the concentricity of the driving ratchet and the driven ratchet for a long time.
  • the pawl will slightly strike the driving ratchet and the driven ratchet when the double ratchet one-way clutch rotates in the idling direction.
  • the present invention provides a dual ratchet one-way clutch, which can be divided into two types of implementations: external meshing and internal meshing.
  • the dual ratchet one-way clutch can reduce the collision of the pawl with the driving ratchet and the driven ratchet when rotating in the idling direction. degree.
  • a double ratchet one-way clutch including a driving ratchet, a pawl, an elastic element, a pawl seat, and a driven ratchet;
  • One or more pawls are provided on the pawl seat;
  • the elastic element is connected with the pawl; the number of the elastic element is one or more;
  • the active ratchet wheel is connected to the pawl seat, and the active ratchet wheel is rotatable relative to the pawl seat;
  • the driven ratchet wheel is connected to the pawl seat, and the driven ratchet wheel is rotatable relative to the pawl seat;
  • the pawl seat serves as the outer ring or shell of the one-way clutch
  • the active ratchet serves as the inner ring or shaft of the one-way clutch
  • the active ratchet and The driven ratchets are all external tooth ratchets
  • the pawl seat serves as the inner ring or shaft of the one-way clutch
  • the active ratchet serves as the outer ring or housing of the one-way clutch
  • the active ratchet and The driven ratchets are all internal tooth ratchets
  • the driving ratchet is provided with a main coupling structure, and the driven ratchet is provided with a slave coupling structure; taking the pawl seat as a reference frame, the driving ratchet is driven by the main coupling structure and the slave coupling structure
  • the driven ratchet wheel rotates and controls its relative position to the driven ratchet wheel;
  • the projection of the tooth tip of the driving ratchet on the projection plane perpendicular to the axial direction of the driving ratchet is the tooth tip arc of the driving ratchet, and its length is the length of the tooth tip arc of the driving ratchet;
  • the projection of the tooth top on the projection plane perpendicular to the axial direction of the driven ratchet is the tooth top arc of the driven ratchet, and its length is the length of the tooth top arc of the driven ratchet;
  • the tooth pitch of the driving ratchet is smaller than the sum of the arc length of the tooth tip of the driving ratchet and the arc length of the tooth tip of the driven ratchet;
  • the pawl seat is used as the reference frame, the driving ratchet first rotates relative to the driven ratchet, and the tooth top of the driven ratchet After the tooth tops of the driving ratchet are complementary in the axial direction, the driving ratchet drives the driven ratchet to rotate.
  • the driving ratchet as the reference frame, the pawl is at the tooth top of the driven ratchet and the The drive ratchet moves on the top of the tooth, the pawl reaches the top of the driven ratchet before leaving the end of the top of the drive To reach the tooth top of the active ratchet wheel.
  • the tooth top arc of the driving ratchet wheel and the tooth top arc of the driven ratchet wheel are concentric arcs, and the tooth top arc of the driving ratchet wheel and the tooth top arc of the driven ratchet wheel are Both ends are provided with transition fillets and/or transition chamfers; when the double ratchet one-way clutch rotates in the idling direction, the pawl seat is used as the reference system, and the tooth top of the driven ratchet is connected to the After the tooth tops of the driving ratchet are complementary in the axial direction, the middle position of the tooth tops of the driven ratchet and the middle position of the tooth grooves of the driving ratchet are close to or coincide with each other in the axial direction. The arc partially coincides with the tooth tip arc of the driven ratchet in the axial direction.
  • the tooth tip arc of the driving ratchet and/or the tooth tip arc of the driven ratchet is not concentric arcs in the axial direction; when the double ratchet one-way clutch rotates in the idling direction,
  • the pawl seat is a reference frame.
  • the realization form of the master coupling structure and/or the slave coupling structure is one or more of protrusions, grooves, positioning keys, and positioning grooves, that is, the active ratchet and/or the
  • the driven ratchet is provided with one or more structures of protrusions, grooves, positioning keys, and positioning grooves.
  • the driving ratchet passes the driving ratchet and/or the One or more structures of protrusions, grooves, positioning keys, and positioning grooves provided on the driven ratchet drive the driven ratchet to rotate.
  • the driving ratchet is connected to the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling element;
  • the driven ratchet is connected to the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling element
  • the claw base is connected.
  • the pawl is provided with a pawl wheel; when the double-ratchet one-way clutch rotates in an idling direction, the active ratchet is used as a reference system, and the pawl is driven by the pawl wheel. The ratchet and the driven ratchet move on top of the teeth.
  • the elastic element is a part or component that uses the elastic properties of the material to ensure that the pawl engages with the active ratchet when the double ratchet one-way clutch rotates in the locking direction, and one elastic element can act on One or more of said pawls.
  • the tooth pitch of the driving ratchet wheel is less than or equal to ninety-eight percent of the sum of the tooth tip arc length of the driving ratchet wheel and the tooth tip arc length of the driven ratchet wheel.
  • the tooth pitch of the driving ratchet is greater than or equal to one hundred and two percent of the arc length of the tooth tip of the driving ratchet.
  • the beneficial effect of the present invention is that when the double ratchet one-way clutch rotates in the idling direction, the driving ratchet is used as the reference system, and the pawl is positioned between the tooth top of the driven ratchet and the driving ratchet.
  • the tooth tip of the ratchet wheel moves up, because the tooth pitch of the driving ratchet wheel is less than or equal to the sum of the tooth tip arc length of the driving ratchet wheel and the tooth tip arc length of the driven ratchet wheel, so that the pawl is moving away from the tooth tip.
  • the end of the tooth tip of the driving ratchet reaches the tooth tip of the driven ratchet, reducing the collision degree of the pawl with the driving ratchet and the driven ratchet; Both ends are provided with transition fillets and/or transition chamfers, or by making the top arc of the driving ratchet and the driven ratchet intersect in the axial direction, the pawl and the driving ratchet are further reduced The degree of collision with the driven ratchet.
  • Fig. 1 is a cross-sectional axonometric view of an outer meshing embodiment of a double ratchet one-way clutch proposed according to the present invention.
  • Fig. 2 is an exploded isometric view of the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • FIG. 3 is a partial cross-sectional schematic diagram of the relative positional relationship between the driving ratchet, the driven ratchet and the pawl when the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention rotates in a locked direction.
  • FIG. 4 is a partial cross-sectional schematic diagram of the relative positional relationship between the driving ratchet, the driven ratchet and the pawl when the outer meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention rotates in an idling direction.
  • Fig. 5 is a cross-sectional axonometric view of an internal meshing embodiment of a double ratchet one-way clutch proposed according to the present invention.
  • Fig. 6 is an exploded isometric view of the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • Fig. 7 is a partial cross-sectional schematic diagram of the relative positional relationship between the driving ratchet, the driven ratchet and the pawl when the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention rotates in the locked direction.
  • FIG. 8 is a partial cross-sectional schematic diagram of the relative positional relationship between the driving ratchet, the driven ratchet and the pawl when the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention rotates in the idling direction.
  • Fig. 9 is a front partial cross-sectional view of an embodiment of the dual ratchet one-way clutch according to the present invention in which the main coupling structure is a groove and the slave coupling structure is a protrusion.
  • Fig. 10 is a partial cross-sectional view of the reverse side of an embodiment in which the main coupling structure of the dual ratchet one-way clutch is a groove and the slave coupling structure is a protrusion according to the present invention.
  • Fig. 11 is a front partial cross-sectional schematic view of an embodiment of the external engagement embodiment of the dual ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a protrusion and the slave coupling structure is a groove.
  • Fig. 12 is a partial cross-sectional schematic view of the reverse side of an embodiment in which the main coupling structure of the double ratchet one-way clutch is a protrusion and the slave coupling structure is a groove according to the present invention.
  • Fig. 13 is a front partial cross-sectional schematic diagram of an outer meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning groove and the slave coupling structure is a positioning key.
  • FIG. 14 is a partial cross-sectional schematic view of the reverse side of the outer meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning groove and the slave coupling structure is a positioning key.
  • Fig. 15 is a front partial cross-sectional schematic diagram of an outer meshing embodiment in which the main coupling structure of the double ratchet one-way clutch proposed according to the present invention is a positioning key and the slave coupling structure is a positioning groove.
  • 16 is a partial cross-sectional schematic view of the reverse side of the outer meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning key and the slave coupling structure is a positioning groove.
  • Fig. 17 is a front partial cross-sectional view of an internal meshing embodiment in which the main coupling structure of the double ratchet one-way clutch is a groove and the slave coupling structure is a protrusion according to the present invention.
  • FIG. 18 is a partial cross-sectional schematic view of the reverse side of the internal meshing embodiment in which the main coupling structure of the double ratchet one-way clutch is a groove and the slave coupling structure is a protrusion according to the present invention.
  • Fig. 19 is a front partial cross-sectional view of an embodiment in which the main coupling structure of the dual ratchet one-way clutch is a protrusion and the slave coupling structure is a groove according to the present invention.
  • FIG. 20 is a partial cross-sectional view of the reverse side of an embodiment in which the main coupling structure of the dual ratchet one-way clutch is a protrusion and the slave coupling structure is a groove according to the present invention.
  • FIG. 21 is a front partial cross-sectional schematic diagram of an internal meshing embodiment in which the main coupling structure of the double ratchet one-way clutch is a positioning groove and the slave coupling structure is a positioning key according to the present invention.
  • FIG. 22 is a partial cross-sectional schematic view of the reverse side of the internal meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning groove and the slave coupling structure is a positioning key.
  • FIG. 23 is a front partial cross-sectional schematic diagram of an internal meshing embodiment in which the main coupling structure of the double ratchet one-way clutch proposed according to the present invention is a positioning key and the slave coupling structure is a positioning groove.
  • FIG. 24 is a partial cross-sectional schematic view of the reverse side of the internal meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning key and the slave coupling structure is a positioning groove.
  • 25 is an axial schematic diagram of the tooth tip arc of the driving ratchet wheel and the tooth tip arc of the driven ratchet wheel of the outer meshing embodiment of the dual ratchet one-way clutch proposed according to the present invention, both of which are concentric circular arcs.
  • Figure 26 is a ratchet-shaped axial direction in which the tooth top arc of the driving ratchet is a concentric circular arc, and the tooth top arc of the driven ratchet is not a concentric circular arc according to the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention Schematic.
  • Fig. 27 is an external meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the tooth top arc of the driving ratchet is not a concentric arc
  • the tooth top arc of the driven ratchet is a ratchet-shaped axial direction with concentric arcs.
  • Fig. 28 is an axial schematic diagram of the shape of ratchet teeth in which the addendum arc of the driving ratchet and the addendum arc of the driven ratchet are not concentric arcs according to the outer meshing embodiment of the double ratchet one-way clutch proposed by the present invention.
  • 29 is an axial schematic diagram of the tooth tip arc of the driving ratchet wheel and the tooth tip arc of the driven ratchet wheel of the inner meshing embodiment of the double ratchet one-way clutch proposed according to the present invention, both of which are concentric circular arcs.
  • Figure 30 is a ratchet-shaped axial direction in which the addendum arc of the driving ratchet is a concentric arc, and the addendum arc of the driven ratchet is not a concentric arc.
  • Figure 31 shows the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention. Schematic.
  • FIG. 32 is an axial schematic diagram of the ratchet tooth shape in which the tooth tip arc of the driving ratchet wheel and the tooth tip arc of the driven ratchet wheel are not concentric arcs according to the internal meshing embodiment of the double ratchet one-way clutch proposed by the present invention.
  • Fig. 33 is a schematic diagram of a pawl provided with a pawl wheel on the pawl of the outer meshing embodiment of the present invention.
  • Fig. 34 is a schematic diagram of a pawl provided with a pawl wheel on the pawl of the internal meshing embodiment of the present invention.
  • Figures 5-8 show the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention, which mainly includes a driving ratchet 5, a pawl 6, an elastic element 7, a pawl seat 8, a driven ratchet 55: pawl One or more pawls 6 are provided on the seat 8; the elastic elements 7 are connected with the pawls 6; the number of the elastic elements 7 is one or more.
  • Both the driving ratchet wheel 5 and the driven ratchet wheel 55 are connected with the pawl seat 8 and both can rotate relative to the pawl seat 8, and both can be connected with the pawl seat 8 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling elements; preferably ,
  • the driving ratchet 5 is connected to the pawl seat 8 through the bearing 84
  • the driven ratchet 55 is connected to the pawl seat 8 through the rolling body 83; preferably, a driven ratchet bearing ring is also provided between the rolling body 83 and the pawl seat 8.
  • the pawl seat 8 is used as the inner ring or shaft of the one-way clutch
  • the driving ratchet 5 is used as the outer ring or shell of the one-way clutch
  • the driving ratchet 5 and the driven ratchet 55 are both internal tooth ratchets.
  • the tooth pitch of the driving ratchet 5 is smaller than the sum of the tooth tip arc length of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55; preferably, the tooth pitch of the driving ratchet 5 is less than or equal to the tooth tip arc length of the driving ratchet 5 and Ninety-eight percent of the sum of the tooth tip arc lengths of the movable ratchet wheel 55; preferably, the tooth pitch of the driving ratchet 5 is greater than or equal to 102 percent of the tooth tip arc length of the driving ratchet wheel 5.
  • the driving ratchet 5 is provided with a main coupling structure, and the driven ratchet 55 is provided with a slave coupling structure; taking the pawl seat 8 as a reference frame, the driving ratchet 5 drives the driven ratchet 55 through the main coupling structure and the slave coupling structure Rotate and control its relative position with the driven ratchet 55.
  • Figures 5 and 7 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the pawl seat 8 is used as the reference frame, and the active ratchet 5 Rotate first relative to the driven ratchet 55.
  • the driving ratchet 5 drives the driven ratchet 55 to rotate, and the pawl 6 can interact with The tooth grooves of the driving ratchet 5 are fitted.
  • Figures 5 and 8 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the pawl seat 8 is used as the reference frame, and the active ratchet 5 Rotate first relative to the driven ratchet 55.
  • the driving ratchet 5 drives the driven ratchet 55 to rotate, taking the driving ratchet 5 as the reference frame ,
  • the pawl 6 moves on the tooth tip of the driven ratchet 55 and the tooth tip of the driving ratchet 5; by making the tooth pitch of the driving ratchet 5 smaller than the arc length of the tooth tip of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55 And, it is possible to make the tooth tip arc of the driving ratchet wheel 5 and the tooth tip arc of the driven ratchet wheel 55 overlap and/or intersect in the axial direction, so that the pawl 6 reaches the driven ratchet wheel before leaving the end of the tooth tip of the driving ratchet wheel 5 At the tooth top of 55, the pawl 2 reaches the tooth top of the driving ratchet 5 before leaving the end of the tooth top of the driven ratchet wheel 5
  • Figures 1-4 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention, which mainly includes a driving ratchet 1, a pawl 2, an elastic element 3, a pawl seat 4, and a driven ratchet 15: pawl One or more pawls 2 are provided on the seat 4; the elastic element 3 is connected with the pawl 2, and the number of the elastic elements 3 is one or more.
  • the driving ratchet wheel 1 and the driven ratchet wheel 15 are both connected to the pawl seat 4, and both can rotate relative to the pawl seat 4, and both can be connected to the pawl seat 4 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling elements; preferably , The driving ratchet wheel 1 is connected to the pawl seat 4 through the bearing 44, and the driven ratchet wheel 15 is connected to the pawl seat 4 through the rolling body 43; preferably, a driven ratchet bearing ring is also provided between the rolling body 43 and the pawl seat 4 42; Shaft shoulders, sleeves, nuts, shaft end retaining rings, elastic retaining rings, thrust washers, positioning sleeves, adapter sleeves, set screws, end caps, threaded rings, circlips, stop rings, screws can be used One or more of, welding, and interference fit are used to fix the bearing 44 and the driven ratchet bearing ring 42.
  • the pawl seat 4 serves as the outer ring or shell of the one-way clutch
  • the driving ratchet 1 serves as the inner ring or shaft of the one-way clutch
  • the driving ratchet 1 and the driven ratchet 15 are both externally toothed ratchets.
  • the elastic element 3 can act on one or more of the entire pawl 2, the pawl 2 on the side of the driving ratchet 1 and the pawl 2 on the side of the driven ratchet 15; the elastic element 3 is guaranteed by the elastic properties of the material
  • the parts or components that the pawl 2 engages with the active ratchet 1 can be coil springs, leaf springs, coil springs, pressure spring tubes, bellows, diaphragm springs, wire springs or
  • an integrally formed elastic element can act on one or more pawls 2.
  • each pawl 2 is connected with an elastic element 3.
  • the tooth pitch of the driving ratchet 1 is smaller than the sum of the tooth tip arc length of the driving ratchet 1 and the tooth tip arc length of the driven ratchet 15; preferably, the tooth pitch of the driving ratchet 1 is less than or equal to the tooth tip arc length of the driving ratchet 1 and the slave Ninety-eight percent of the sum of the tooth tip arc lengths of the movable ratchet 15; preferably, the tooth spacing of the driving ratchet 1 is greater than or equal to 102 percent of the tooth tip arc length of the driving ratchet 1.
  • the driving ratchet 1 is provided with a main coupling structure, and the driven ratchet 15 is provided with a slave coupling structure; taking the pawl seat 4 as a reference frame, the driving ratchet 1 drives the driven ratchet 15 through the main coupling structure and the slave coupling structure Rotate and control its relative position with the driven ratchet 15.
  • Figures 1 and 3 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the pawl seat 4 is used as the reference system, and the active ratchet 1 Rotate relative to the driven ratchet 15 first. After the cogging of the driven ratchet 15 and the cogging of the driving ratchet 1 coincide in the axial direction, the driving ratchet 1 drives the driven ratchet 15 to rotate.
  • the pawl 2 can interact with The tooth grooves of the driving ratchet 1 are fitted; the shape of the ratchet teeth of the driving ratchet 1 and the shape of the ratchet teeth of the driven ratchet 15 may be the same or different.
  • Figures 1 and 4 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the pawl seat 4 is used as the reference system, and the active ratchet 1 Rotate relative to the driven ratchet 15 first, and after the tooth tops of the driven ratchet 15 and the tooth tops of the driving ratchet 1 are complementary in the axial direction, the driving ratchet 1 drives the driven ratchet 15 to rotate, taking the driving ratchet 1 as the reference frame ,
  • the pawl 2 moves on the tooth tip of the driven ratchet 15 and the tooth tip of the driving ratchet 1; by making the tooth pitch of the driving ratchet 1 smaller than the arc length of the tooth tip of the driving ratchet 1 and the tooth tip arc length of the driven ratchet 15 And, it is possible to make the tooth tip arc of the driving ratchet wheel 1 and the tooth tip arc
  • Figures 5-8 show the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention, which mainly includes a driving ratchet 5, a pawl 6, an elastic element 7, a pawl seat 8, a driven ratchet 55: pawl One or more pawls 6 are provided on the seat 8; the elastic elements 7 are connected with the pawls 6; the number of the elastic elements 7 is one or more.
  • Both the driving ratchet wheel 5 and the driven ratchet wheel 55 are connected with the pawl seat 8 and both can rotate relative to the pawl seat 8, and both can be connected with the pawl seat 8 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling elements; preferably ,
  • the driving ratchet 5 is connected to the pawl seat 8 through the bearing 84
  • the driven ratchet 55 is connected to the pawl seat 8 through the rolling body 83; preferably, a driven ratchet bearing ring is also provided between the rolling body 83 and the pawl seat 8.
  • Shaft shoulders, sleeves, nuts, shaft end retaining rings, elastic retaining rings, thrust washers, positioning sleeves, adapter sleeves, set screws, end caps, threaded rings, circlips, stop rings, screws can be used
  • One or more of, welding, and interference fit are used to fix the bearing 84 and the driven ratchet bearing ring 82.
  • the pawl seat 8 is used as the inner ring or shaft of the one-way clutch
  • the driving ratchet 5 is used as the outer ring or shell of the one-way clutch
  • the driving ratchet 5 and the driven ratchet 55 are both internal tooth ratchets.
  • the elastic element 7 can act on one or more of the entire pawl 6, the pawl 6 on the side of the driving ratchet 5, and the pawl 6 on the side of the driven ratchet 55; the elastic element 7 is used to ensure the elastic properties of the material
  • the parts or components that the pawl 6 engages with the active ratchet 5 can be coil springs, leaf springs, coil springs, pressure spring tubes, bellows, diaphragm springs, wire springs or
  • an integrally formed elastic element can act on one or more pawls 6.
  • an elastic element 7 is connected to each pawl 6.
  • the tooth pitch of the driving ratchet 5 is smaller than the sum of the tooth tip arc length of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55; preferably, the tooth pitch of the driving ratchet 5 is less than or equal to the tooth tip arc length of the driving ratchet 5 and Ninety-eight percent of the sum of the tooth tip arc lengths of the movable ratchet wheel 55; preferably, the tooth pitch of the driving ratchet 5 is greater than or equal to 102 percent of the tooth tip arc length of the driving ratchet wheel 5.
  • the driving ratchet 5 is provided with a main coupling structure, and the driven ratchet 55 is provided with a slave coupling structure; taking the pawl seat 8 as a reference frame, the driving ratchet 5 drives the driven ratchet 55 through the main coupling structure and the slave coupling structure Rotate and control its relative position with the driven ratchet 55.
  • Figures 5 and 7 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the pawl seat 8 is used as the reference frame, and the active ratchet 5 Rotate first relative to the driven ratchet 55.
  • the driving ratchet 5 drives the driven ratchet 55 to rotate, and the pawl 6 can interact with
  • the tooth grooves of the driving ratchet 5 are fitted; the shape of the ratchet teeth of the driving ratchet 5 and the shape of the ratchet teeth of the driven ratchet 55 may be the same or different.
  • Figures 5 and 8 show the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the pawl seat 8 is used as the reference frame, and the active ratchet 5 Rotate first relative to the driven ratchet 55.
  • the driving ratchet 5 drives the driven ratchet 55 to rotate, taking the driving ratchet 5 as the reference frame ,
  • the pawl 6 moves on the tooth tip of the driven ratchet 55 and the tooth tip of the driving ratchet 5; by making the tooth pitch of the driving ratchet 5 smaller than the arc length of the tooth tip of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55 And, it is possible to make the tooth tip arc of the driving ratchet wheel 5 and the tooth tip arc of the driven ratchet wheel 55 overlap and/or intersect in the axial direction, so that the pawl 6 reaches the driven ratchet wheel before leaving the end of the tooth tip of the driving ratchet wheel 5 At the tooth top of 55, the pawl 2 reaches the tooth top of the driving ratchet 5 before leaving the end of the tooth top of the driven ratchet wheel 5
  • the main coupling structure of the dual ratchet one-way clutch proposed according to the present invention is an outer meshing embodiment in which the main coupling structure is a groove and the slave coupling structure is a protrusion.
  • the main coupling structure is a groove 18, and the active ratchet 1 is provided with one or more grooves 18, the slave coupling structure is a protrusion 16, and the driven ratchet 15 is provided with one or more protrusions 16, and the driving ratchet 1 is controlled by the protrusions 16 and the grooves 18. The position relative to the driven ratchet 15 and drives the driven ratchet 15 to rotate.
  • the main coupling structure of the dual ratchet one-way clutch proposed according to the present invention is an outer meshing embodiment in which the main coupling structure is a protrusion and the slave coupling structure is a groove.
  • the main coupling structure is a protrusion 16
  • the active ratchet 1 is provided with one or more protrusions 16
  • the slave coupling structure is a groove 18
  • the driven ratchet 15 is provided with one or more grooves 18
  • the driving ratchet 1 is controlled by the protrusions 16 and the groove 18 The position relative to the driven ratchet 15 and drives the driven ratchet 15 to rotate.
  • the main coupling structure of the double ratchet one-way clutch proposed according to the present invention is an external engagement embodiment with a positioning groove and the slave coupling structure is a positioning key.
  • the main coupling structure is a positioning groove 19
  • the active ratchet 1 is provided with one or more positioning grooves 19
  • the slave coupling structure is a positioning key 17
  • the driven ratchet 15 is provided with one or more positioning keys 17, and the driving ratchet 1 is controlled by the positioning key 17 and the positioning groove 19
  • the main coupling structure of the double ratchet one-way clutch proposed according to the present invention is an outer meshing embodiment in which the main coupling structure is a positioning key and the slave coupling structure is a positioning groove.
  • the main coupling structure is the positioning key 17, and the active ratchet 1 is provided with one or more positioning keys 17, the slave coupling structure is a positioning slot 19, the driven ratchet 15 is provided with one or more positioning slots 19, the driving ratchet 1 is controlled by the positioning key 17 and the positioning slot 19 The position relative to the driven ratchet 15 and drives the driven ratchet 15 to rotate.
  • the driving ratchet 1 can be provided with one or more of the protrusion 16, the groove 18, the positioning key 17, and the positioning groove 19.
  • the driven ratchet 15 One or more of the protrusion 16, the groove 18, the positioning key 17, and the positioning groove 19 may be provided on the upper part; taking the pawl seat 4 as the reference system, the driving ratchet 1 passes the protrusion 16, the groove 18 One or more of the positioning key 17 and the positioning groove 19 control its relative position with the driven ratchet 15 and drive the driven ratchet 15 to rotate.
  • the main coupling structure of the double ratchet one-way clutch is an internal meshing embodiment in which the main coupling structure is a groove and the slave coupling structure is a protrusion.
  • the main coupling structure is a groove 58, and the active ratchet 5 is provided with one or more grooves 58, the slave coupling structure is a protrusion 56, the driven ratchet 55 is provided with one or more protrusions 56, the driving ratchet 5 is controlled by the protrusions 56 and the groove 58
  • the position relative to the driven ratchet 55 drives the driven ratchet 55 to rotate.
  • the main coupling structure of the double ratchet one-way clutch proposed according to the present invention is an internal meshing embodiment in which the main coupling structure is a protrusion and the slave coupling structure is a groove.
  • the main coupling structure is a protrusion 56
  • the active ratchet 5 is provided with one or more protrusions 56
  • the slave coupling structure is a groove 58
  • the driven ratchet 55 is provided with one or more grooves 58
  • the driving ratchet 5 is controlled by the protrusions 56 and the groove 58
  • the position relative to the driven ratchet 55 drives the driven ratchet 55 to rotate.
  • the main coupling structure of the double ratchet one-way clutch proposed according to the present invention is an internal meshing embodiment with a positioning groove and the slave coupling structure is a positioning key.
  • the main coupling structure is a positioning groove 59, and the active ratchet 5 is provided with one or more positioning grooves 59, the slave coupling structure is a positioning key 57, the driven ratchet 55 is provided with one or more positioning keys 57, the driving ratchet 5 is controlled by the positioning key 57 and the positioning groove 59
  • the position relative to the driven ratchet 55 drives the driven ratchet 55 to rotate.
  • the main coupling structure of the dual ratchet one-way clutch proposed according to the present invention is an internal engagement embodiment with a positioning key and the slave coupling structure is a positioning slot.
  • the main coupling structure is a positioning key 57
  • the active ratchet 5 is provided with one or more positioning keys 57
  • the slave coupling structure is a positioning slot 59
  • the driven ratchet 55 is provided with one or more positioning slots 59
  • the driving ratchet 5 is controlled by the positioning key 57 and the positioning slot 59
  • the position relative to the driven ratchet 55 drives the driven ratchet 55 to rotate.
  • one or more of the protrusion 56, the groove 58, the positioning key 57, the positioning groove 59 can be provided on the driving ratchet 5, and the driven ratchet 55
  • One or more of the protrusion 56, the groove 58, the positioning key 57, the positioning groove 59 can be provided; taking the pawl seat 8 as the reference system, through the driving ratchet 5 through the protrusion 56 and the groove 58
  • One or more of the positioning key 57 and the positioning groove 59 control its relative position with the driven ratchet 55 and drive the driven ratchet 55 to rotate.
  • Figures 1 and 25 show that the driving ratchet tooth tip arc and the driven ratchet tooth tip arc of the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention are ratchet teeth with concentric arcs in the axial direction.
  • Shape, the tooth tip arcs of the driving ratchet 1 and the driven ratchet 15 are both concentric arcs in the axial direction, and both ends of the tooth tip arcs of the driving ratchet 1 and the driven ratchet 15 are provided with transition fillets and/or transitions.
  • the diameter of the transition fillet and/or the length of the transition chamfer is greater than 0.1 mm; because the tooth pitch of the driving ratchet 1 is smaller than the sum of the arc length of the tooth tip of the driving ratchet 1 and the tooth tip arc length of the driven ratchet 15
  • the pawl seat 4 is used as the reference frame.
  • the top arc of the driving ratchet tooth is concentric arcs in the axial direction, and the top arc of the driven ratchet tooth is in the axial direction.
  • the shape of a ratchet tooth is not a concentric arc.
  • the tooth top arc of the driving ratchet 1 is a concentric arc in the axial direction, and the tooth top arc of the driven ratchet 15 is not a concentric arc in the axial direction.
  • the tooth tip arc of 15 can be a curve or a combination of a curve and a straight line; since the tooth spacing of the driving ratchet 1 is smaller than the sum of the tooth tip arc length of the driving ratchet 1 and the tooth tip arc length of the driven ratchet 15, the double ratchets are unidirectional
  • the tooth tip arc of the driving ratchet wheel 1 and the tooth tip arc of the driven ratchet wheel 15 intersect in the axial direction, preferably, there are intersection a and intersection b. .
  • Figures 1 and 27 show that the top arc of the driving ratchet tooth is not concentric arcs in the axial direction, and the top arc of the driven ratchet tooth is in the axial direction.
  • the top is a ratchet shape with concentric arcs.
  • the tooth top arc of the driving ratchet 1 is not a concentric arc in the axial direction.
  • the tooth top arc of the driving ratchet 1 can be a curve or a combination of a curve and a straight line.
  • the driven ratchet 15 The tooth tip arc is concentric arcs in the axial direction; since the tooth spacing of the driving ratchet 1 is smaller than the sum of the tooth tip arc length of the driving ratchet 1 and the tooth tip arc length of the driven ratchet 15, the double ratchet one-way clutch When rotating in the idling direction, taking the pawl seat 4 as the reference system, the tooth tip arc of the driving ratchet wheel 1 and the tooth tip arc of the driven ratchet wheel 15 intersect in the axial direction, preferably, there are intersection a and intersection b.
  • Figures 1 and 28 show that the driving ratchet tooth tip arc and the driven ratchet tooth tip arc of the outer meshing embodiment of the double ratchet one-way clutch proposed according to the present invention are not concentric arcs in the axial direction.
  • the tooth top arc of the driving ratchet 1 is not a concentric arc in the axial direction
  • the tooth top arc of the driving ratchet 1 can be a curve or a combination of a curve and a straight line
  • the tooth top arc of the driven ratchet 15 is in the axial direction
  • the tooth tip arc of the driven ratchet 15 can be a curve or a combination of a curve and a straight line
  • the driving ratchet tooth tip arc and the driven ratchet tooth tip arc of the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention are ratchet teeth with concentric arcs in the axial direction.
  • the tooth tip arcs of the driving ratchet 5 and the driven ratchet 55 are both concentric arcs in the axial direction, and both ends of the tooth tip arcs of the driving ratchet 5 and the driven ratchet 55 are provided with transition fillets and/or transitions.
  • the diameter of the transition fillet and/or the length of the transition chamfer is greater than 0.1 mm; because the tooth pitch of the driving ratchet 5 is smaller than the sum of the arc length of the tooth tip of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55
  • the pawl seat 8 is used as the reference frame.
  • Figures 5 and 30 show the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention.
  • the driving ratchet tooth tip arc is concentric arcs in the axial direction, and the driven ratchet tooth tip arc is in the axial direction.
  • the shape of a ratchet tooth is not a concentric arc.
  • the tooth top arc of the driving ratchet 5 is a concentric arc in the axial direction, and the tooth top arc of the driven ratchet 55 is not a concentric arc in the axial direction.
  • the tooth tip arc of 55 can be a curve or a combination of a curve and a straight line; since the tooth spacing of the driving ratchet 5 is smaller than the sum of the tooth tip arc length of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55, the double ratchets are unidirectional
  • the top arc of the driving ratchet 5 and the top arc of the driven ratchet 55 have an intersection in the axial direction.
  • Figures 5 and 31 show that the driving ratchet tooth tip arc of the internal meshing embodiment of the double ratchet one-way clutch proposed by the present invention is not concentric arcs in the axial direction, and the driven ratchet tooth tip arc is in the axial
  • the top is a ratchet shape with concentric arcs.
  • the tooth tip arc of the driving ratchet 5 is not a concentric arc in the axial direction.
  • the tooth tip arc of the driving ratchet 5 can be a curve or a combination of a curve and a straight line.
  • the driven ratchet 55 The tooth tip arc is concentric arcs in the axial direction; because the tooth spacing of the driving ratchet 5 is smaller than the sum of the tooth tip arc length of the driving ratchet 5 and the tooth tip arc length of the driven ratchet 55, the double ratchet one-way clutch
  • the tooth top arc of the driving ratchet 5 and the tooth top arc of the driven ratchet 55 have an intersection point in the axial direction, preferably, there are an intersection point c and an intersection point d.
  • Figures 5 and 32 show that the driving ratchet tooth tip arc and the driven ratchet tooth tip arc of the internal meshing embodiment of the double ratchet one-way clutch proposed according to the present invention are not concentric arcs in the axial direction.
  • the tooth shape, the tooth top arc of the driving ratchet 5 is not a concentric arc in the axial direction, the tooth top arc of the driving ratchet 5 can be a curve or a combination of a curve and a straight line, and the tooth top arc of the driven ratchet 55 is in the axial direction It is not a concentric arc, the tooth tip arc of the driven ratchet 55 can be a curve or a combination of a curve and a straight line; because the tooth pitch of the driving ratchet 5 is smaller than the tooth tip arc length of the driving ratchet 5 and the tooth tip arc of the driven ratchet 55
  • the implementation of the pawl 2 of the external meshing embodiment shown in FIGS. 1-2 and 33 may be one of no pawl wheel 25 provided on the pawl 2 and a pawl wheel 25 provided on the pawl 2 Or two ways.
  • the pawl of the outer meshing embodiment of the present invention is provided with the pawl of the pawl wheel: the pawl 2 is provided with the pawl wheel 25; when the double ratchet one-way clutch rotates in the idling direction , With the driving ratchet wheel 1 as the reference frame, the pawl 2 moves on the tooth tops of the driven ratchet wheel 15 and the tooth tops of the driving ratchet wheel 1 through the ratchet wheel 25.
  • the implementation of the pawl 6 of the internal meshing embodiment shown in FIGS. 5-6 and 34 may be one of the pawl 6 is not provided with a pawl wheel 65 and the pawl 6 is provided with a pawl wheel 65 Or two ways.
  • the pawl of the internal meshing embodiment of the present invention is provided with a pawl of a pawl wheel: the pawl 6 is provided with a pawl wheel 65; when the double ratchet one-way clutch rotates in an idling direction , With the driving ratchet wheel 5 as the reference frame, the pawl 6 moves on the tooth tops of the driven ratchet wheel 55 and the tooth tops of the driving ratchet wheel 5 through the ratchet wheel 65.
  • the double ratchet one-way clutch proposed by the present invention has the mute effect of a wedge-type overrunning clutch and a roller-type overrunning clutch when idling, and has the effect of no slipping of a ratchet-type one-way clutch when it is locked, and can widely replace the market.
  • the ratchet wheel type one-way clutch, wedge overrunning clutch and roller type overrunning clutch have long service life.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention concerne un embrayage à roue libre à double rochet, comprenant des rochets d'entraînement (1, 5), des cliquets (2, 6), des éléments élastiques (3, 7), des sièges de cliquet (4, 8) et des rochets entraînés (15, 55), un ou plusieurs cliquets (2, 6) étant disposés sur les sièges de cliquet (4, 8), et les éléments élastiques (3, 7) étant reliés aux cliquets (2, 6) ; et les rochets d'entraînement (1, 5) et les rochets entraînés (15, 55) sont reliés aux sièges de rochet (4, 8) et peuvent tourner par rapport aux sièges de rochet (4, 8), et l'espacement des dents des cliquets d'entraînement (1, 5) est inférieur ou égal à la somme de la longueur d'arc de sommet de dent des rochets d'entraînement (1, 5) et de la longueur d'arc de sommet de dent des rochets entraînés (15, 55). Lorsque l'embrayage à roue libre à double rochet tourne dans la direction de ralenti, les cliquets (2, 6) se déplacent sur les sommets des dents des rochets entraînés (15, 55) et les sommets des dents des rochets d'entraînement (1, 5), les cliquets (2, 6) atteignent les sommets des dents des rochets entraînés (15, 55) avant de quitter les extrémités de queue des sommets des dents des cliquets d'entraînement (1, 5), et les cliquets (2, 6) atteignent les sommets des dents des rochets d'entraînement avant de quitter les extrémités de queue des sommets des dents des rochets entraînés.
PCT/CN2021/078569 2020-03-17 2021-03-02 Embrayage à roue libre à double rochet WO2021185064A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202020332459.2 2020-03-17
CN202010185917.9 2020-03-17
CN202010185917.9A CN111473065A (zh) 2020-03-17 2020-03-17 双棘轮单向离合器
CN202020332459.2U CN212250891U (zh) 2020-03-17 2020-03-17 双棘轮单向离合器

Publications (1)

Publication Number Publication Date
WO2021185064A1 true WO2021185064A1 (fr) 2021-09-23

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Application Number Title Priority Date Filing Date
PCT/CN2021/078569 WO2021185064A1 (fr) 2020-03-17 2021-03-02 Embrayage à roue libre à double rochet

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WO (1) WO2021185064A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040040813A1 (en) * 2002-07-06 2004-03-04 Darby Jonathan Alan No-back device
CN203189568U (zh) * 2013-02-18 2013-09-11 安徽江淮汽车股份有限公司 一种超越离合器
CN106855087A (zh) * 2016-11-30 2017-06-16 尹世和 双棘轮式单向离合器
CN206429574U (zh) * 2016-11-30 2017-08-22 尹世和 一种双棘轮式单向离合器
US20190084349A1 (en) * 2017-09-20 2019-03-21 Chosen Co., Ltd. Reinforcement for a hub ratchet base
CN110748581A (zh) * 2019-11-21 2020-02-04 尹世和 三棘轮式单向离合器
CN111473065A (zh) * 2020-03-17 2020-07-31 尹世和 双棘轮单向离合器
CN111594555A (zh) * 2019-11-21 2020-08-28 尹世和 三棘轮单向离合器
CN212250891U (zh) * 2020-03-17 2020-12-29 尹世和 双棘轮单向离合器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040040813A1 (en) * 2002-07-06 2004-03-04 Darby Jonathan Alan No-back device
CN203189568U (zh) * 2013-02-18 2013-09-11 安徽江淮汽车股份有限公司 一种超越离合器
CN106855087A (zh) * 2016-11-30 2017-06-16 尹世和 双棘轮式单向离合器
CN206429574U (zh) * 2016-11-30 2017-08-22 尹世和 一种双棘轮式单向离合器
US20190084349A1 (en) * 2017-09-20 2019-03-21 Chosen Co., Ltd. Reinforcement for a hub ratchet base
CN110748581A (zh) * 2019-11-21 2020-02-04 尹世和 三棘轮式单向离合器
CN111594555A (zh) * 2019-11-21 2020-08-28 尹世和 三棘轮单向离合器
CN111473065A (zh) * 2020-03-17 2020-07-31 尹世和 双棘轮单向离合器
CN212250891U (zh) * 2020-03-17 2020-12-29 尹世和 双棘轮单向离合器

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