CN212250892U

CN212250892U - Multi-ratchet one-way clutch

Info

Publication number: CN212250892U
Application number: CN202020332680.8U
Authority: CN
Inventors: 尹世和
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-12-29
Anticipated expiration: 2030-03-17

Abstract

The utility model provides a multi-ratchet one-way clutch, which comprises a driving ratchet, a pawl, an elastic element, a pawl seat and a driven ratchet group; the driven ratchet set comprises a first driven ratchet and a second driven ratchet; when the multi-ratchet one-way clutch rotates along an idling direction, the driving ratchet drives the first driven ratchet and the second driven ratchet to rotate, so that tooth crests of the first driven ratchet and tooth crests of the second driven ratchet are complementary in the axial direction, the pawl moves on the tooth crests of the first driven ratchet and the tooth crests of the second driven ratchet, and the pawl is not in contact with the driving ratchet.

Description

Multi-ratchet one-way clutch

Technical Field

The utility model relates to a one-way clutch, especially a many ratchet one-way clutch.

Background

The ratchet clutch is one kind of one-way clutch and includes two kinds, outer meshing ratchet clutch and inner meshing ratchet clutch.

Most ratchet wheel clutches on the market at present consist of a ratchet wheel and a plurality of pawls, when the ratchet wheel rotates in the direction of idling, the pawls strike the surface of the ratchet wheel under the action of the elastic element after sliding at the tail end of the tooth top of the ratchet wheel, and make a sound, the abrasion between the pawls and the ratchet wheel can be increased in the process, the service life of the elastic element is shortened, and the pawls strike the surface of the ratchet wheel when the one-way clutch rotates in the direction of idling can be avoided by adopting a double-ratchet wheel mode.

The presently disclosed double-ratchet one-way clutch avoids the pawl from impacting the surface of the ratchet wheel in a mode that the tooth tops of the driving ratchet wheel and the driven ratchet wheel are complementary in the axial direction, and because the driving ratchet wheel and the driven ratchet wheel are stressed differently, the types and the abrasion degrees of bearings connected with the driving ratchet wheel and the driven ratchet wheel are different, the concentricity of the driving ratchet wheel and the driven ratchet wheel is difficult to guarantee for a long time, and the pawl slightly impacts the driving ratchet wheel and the driven ratchet wheel when the double-ratchet one-way clutch rotates along the idling direction.

Disclosure of Invention

The utility model provides a many ratchet one-way clutch can divide into two kinds of implementation modes of external gearing and internal gearing, and this many ratchet one-way clutch pawl is not with the contact of initiative ratchet when rotatory along the direction of idle running.

The utility model adopts the technical proposal that: a multi-ratchet one-way clutch comprises a driving ratchet, a pawl, an elastic element, a pawl seat and a driven ratchet set;

one or more pawls are arranged on the pawl seat;

the elastic element is connected with the pawl; the number of the elastic elements is one or more;

the active ratchet wheel is connected with the pawl seat and can rotate relative to the pawl seat;

the driven ratchet set comprises a first driven ratchet and a second driven ratchet;

the first driven ratchet wheel is connected with the pawl seat, and the first driven ratchet wheel can rotate relative to the pawl seat;

the second driven ratchet wheel is connected with the pawl seat and can rotate relative to the pawl seat;

when the multi-ratchet one-way clutch is externally engaged, the pawl seat is used as an outer ring or a shell of the one-way clutch, the driving ratchet is used as an inner ring or a shaft of the one-way clutch, and the driving ratchet, the first driven ratchet and the second driven ratchet are all external tooth ratchets;

when the multi-ratchet one-way clutch is in internal engagement, the pawl seat is used as an inner ring or a shaft of the one-way clutch, the driving ratchet is used as an outer ring or a shell of the one-way clutch, and the driving ratchet, the first driven ratchet and the second driven ratchet are all internal tooth ratchets;

the projection of the tooth top of the active ratchet wheel on the projection plane vertical to the axial direction of the active ratchet wheel is the tooth top arc of the active ratchet wheel, the length of the projection is the tooth top arc length of the active ratchet wheel, and the length of the projection is the tooth top arc length of the active ratchet wheel; the projection of the tooth top of the first driven ratchet wheel on the projection plane vertical to the axial direction of the first driven ratchet wheel is the tooth top arc of the first driven ratchet wheel, and the length of the tooth top arc is the tooth top arc length of the first driven ratchet wheel; the projection of the tooth top of the second driven ratchet wheel on the projection plane vertical to the axial direction of the second driven ratchet wheel is the tooth top arc of the second driven ratchet wheel, and the length of the projection is the tooth top arc length of the second driven ratchet wheel;

the driving ratchet wheel is provided with a main coupling structure, and the driven ratchet wheel group is provided with a driven coupling structure; the slave coupling structure comprises a first coupling structure disposed on the first driven ratchet and a second coupling structure disposed on the second driven ratchet; the driving ratchet wheel drives the driven ratchet wheel set to rotate through the main coupling structure and the auxiliary coupling structure by taking the pawl seat as a reference system, and the relative position of the driving ratchet wheel and the ratchet wheel in the driven ratchet wheel set is controlled;

the driving ratchet wheel can drive the driven ratchet wheel set to rotate by taking the pawl seat as a reference system, wherein the transmission scheme is one of the driving ratchet wheel drives the first driven ratchet wheel and the second driven ratchet wheel to rotate, the driving ratchet wheel drives the first driven ratchet wheel to rotate and the first driven ratchet wheel drives the second driven ratchet wheel to rotate, the driving ratchet wheel drives the second driven ratchet wheel to rotate and the second driven ratchet wheel drives the first driven ratchet wheel to rotate;

when the multi-ratchet one-way clutch rotates in an idling direction, the driving ratchet drives the driven ratchet group to rotate by taking the pawl seat as a reference system, so that the tooth tops of the first driven ratchet and the second driven ratchet are complementary in the axial direction, the pawl moves on the tooth tops of the first driven ratchet and the second driven ratchet by taking the driving ratchet as the reference system, and the pawl is not in contact with the driving ratchet.

Further, the driven ratchet wheel set further comprises a third driven ratchet wheel, the third driven ratchet wheel is connected with the pawl seat, and the third driven ratchet wheel can rotate relative to the pawl seat;

when the embodiment of the multi-ratchet one-way clutch is in external engagement, the third driven ratchet is an external tooth ratchet;

when the embodiment of the multi-ratchet one-way clutch is in-engagement, the third driven ratchet is an internal tooth ratchet;

the slave coupling arrangement further comprises a third coupling arrangement provided on the third driven ratchet;

the driving ratchet wheel can drive the driven ratchet wheel sets to rotate by taking the pawl seat as a reference system, wherein the transmission scheme is that the driving ratchet wheel drives the first driven ratchet wheel, the second driven ratchet wheel and the third driven ratchet wheel to rotate, the driving ratchet wheel drives the first driven ratchet wheel to rotate, the first driven ratchet wheel drives the second driven ratchet wheel to rotate, the second driven ratchet wheel drives the third driven ratchet wheel to rotate, the driving ratchet wheel drives one of the driven ratchet wheel sets to rotate, and one of the driven ratchet wheel sets driven by the driving ratchet wheel drives the rest of the driven ratchet wheel sets to rotate;

when the multi-ratchet one-way clutch rotates along an idling direction, the driving ratchet drives the driven ratchet group to rotate by taking the pawl seat as a reference system, so that after the tooth tops of the first driven ratchet and the third driven ratchet are complementary with the tooth top of the second driven ratchet in the axial direction, the pawl moves on the tooth tops of the first driven ratchet and the third driven ratchet and the tooth top of the second driven ratchet by taking the driving ratchet as the reference system, and the pawl is not in contact with the driving ratchet;

when the embodiment of the multi-ratchet one-way clutch is externally engaged, the third driven ratchet is an external gear ratchet, and when the embodiment of the multi-ratchet one-way clutch is internally engaged, the third driven ratchet is an internal gear ratchet; the projection of the tooth top of the third driven ratchet wheel on the projection plane vertical to the axial direction of the third driven ratchet wheel is the tooth top arc of the third driven ratchet wheel, and the length of the tooth top arc is the tooth top arc length of the third driven ratchet wheel.

Further, the pawl is an integral pawl; when the multi-ratchet one-way clutch rotates along the idling direction, the integral pawl is in contact with the driven ratchet set by taking the driving ratchet as a reference system, and the integral pawl slides on the driven ratchet set.

Further, the pawl comprises a main pawl and a slave pawl, and the slave pawl can drive the main pawl to be engaged with or disengaged from the driving ratchet wheel; the pawl is in contact with the driven ratchet set through the slave pawl, and when the multi-ratchet one-way clutch rotates in a free-wheeling direction, the pawl slides on the driven ratchet set through the slave pawl by taking the master ratchet as a reference system.

Further, the pawl comprises a main pawl and a slave pawl, a slave pawl wheel is arranged on the slave pawl, and the slave pawl can drive the main pawl to be meshed with or separated from the driving ratchet wheel; the pawl is in contact with the driven ratchet wheel set through the slave pawl wheel, and when the multi-ratchet one-way clutch rotates in an idling direction, the pawl moves on the driven ratchet wheel set through the slave pawl wheel by taking the driving ratchet wheel as a reference system.

Furthermore, the pawl is an integral pawl, and a pawl wheel is arranged on the integral pawl; the pawl is in contact with the driven ratchet wheel set through the pawl wheel, and when the multi-ratchet wheel one-way clutch rotates in an idling direction, the pawl moves on the driven ratchet wheel set through the pawl wheel by taking the driving ratchet wheel as a reference system.

Furthermore, the active ratchet wheel is connected with the pawl seat through shaft hole clearance fit, a sliding bearing, a rolling bearing or a rolling body; the driven ratchet wheel set is connected with the ratchet seat through shaft hole clearance fit, a sliding bearing, a rolling bearing or a rolling body.

Further, the main coupling structure and/or the auxiliary coupling structure may be implemented in the form of one or more structures of a protrusion, a groove, a positioning key, and a positioning slot, that is, the driving ratchet and/or the auxiliary ratchet set is/are provided with one or more structures of a protrusion, a groove, a positioning key, and a positioning slot, and the driving ratchet drives the auxiliary ratchet set to rotate through one or more structures of a protrusion, a groove, a positioning key, and a positioning slot provided on the driving ratchet and/or the auxiliary ratchet set, with the pawl seat as a reference system.

Further, the resilient member may act on one or more of the entire pawl, the pawl on the side of the driving ratchet, and the pawl on the side of the driven ratchet set.

Further, the elastic elements are parts or components for ensuring that the pawls are engaged with the driving ratchet when the multi-ratchet one-way clutch rotates in the locking direction by utilizing the elastic performance of materials, and one elastic element can act on one or more pawls.

Further, the tooth pitch of the first driven ratchet is smaller than the sum of the tooth crest arc length of the first driven ratchet and the tooth crest arc length of the second driven ratchet, and when the multi-ratchet one-way clutch rotates in the idling direction, the pawl reaches the tooth crest of the second driven ratchet before leaving the end of the tooth crest of the first driven ratchet by taking the driving ratchet as a reference system, and the pawl reaches the tooth crest of the first driven ratchet before leaving the end of the tooth crest of the second driven ratchet.

Further, when the top arcs of the first driven ratchet wheel and the second driven ratchet wheel are concentric arcs in the axial direction, transition fillets and/or transition chamfers are/is arranged at two ends of the top arcs of the first driven ratchet wheel and the second driven ratchet wheel.

Further, when the top arcs of the teeth of the first driven ratchet wheel, the second driven ratchet wheel and the third driven ratchet wheel are concentric arcs in the axial direction, transition fillets and/or transition chamfers are/is arranged at two ends of the top arcs of the teeth of the first driven ratchet wheel, the second driven ratchet wheel and the third driven ratchet wheel.

Further, when the addendum arcs of the first driven ratchet wheel and/or the second driven ratchet wheel are not concentric arcs in the axial direction; when the multi-ratchet one-way clutch rotates along an idling direction, the pawl seat is used as a reference system, after the tooth tops of the first driven ratchet wheel and the second driven ratchet wheel are complementary in the axial direction, the middle position of the tooth tops of the second driven ratchet wheel is close to or coincided with the middle position of the tooth grooves of the first driven ratchet wheel in the axial direction, and the tooth top arcs of the first driven ratchet wheel and the tooth top arcs of the second driven ratchet wheel have intersection points in the axial direction.

Further, when the top arcs of the teeth of the first driven ratchet wheel and/or the second driven ratchet wheel and/or the third driven ratchet wheel are not concentric arcs in the axial direction; when the multi-ratchet one-way clutch rotates along an idling direction, the pawl seat is used as a reference system, after the tooth tops of the first driven ratchet and the third driven ratchet are complementary with the tooth top of the second driven ratchet in the axial direction, the middle position of the tooth top of the second driven ratchet is close to or coincided with the middle position of the tooth socket of the first driven ratchet in the axial direction, and the tooth top arcs of the first driven ratchet and/or the third driven ratchet and the tooth top arcs of the second driven ratchet have an intersection point in the axial direction.

Further, one or more structures of a protrusion, a groove, a positioning key and a positioning groove are arranged on the main pawl and/or the auxiliary pawl, and the auxiliary pawl drives the main pawl to be engaged with or disengaged from the driving ratchet wheel through one or more structures of the protrusion, the groove, the positioning key and the positioning groove arranged on the main pawl and/or the auxiliary pawl.

The beneficial effects of the utility model reside in that: when the multi-ratchet one-way clutch rotates along an idling direction, the driving ratchet wheel drives the first driven ratchet wheel and the second driven ratchet wheel to rotate by taking the pawl seat as a reference system, so that after the tooth tops of the first driven ratchet wheel and the second driven ratchet wheel are complementary in the axial direction, the pawl moves on the tooth tops of the first driven ratchet wheel and the second driven ratchet wheel by taking the driving ratchet wheel as the reference system; in the process, the pawl is not contacted with the driving ratchet wheel, so long as the rotation concentricity of the first driven ratchet wheel and the second driven ratchet wheel is ensured, the pawl can be reduced or prevented from slightly impacting the first driven ratchet wheel and the second driven ratchet wheel, and the stress magnitude and the abrasion degree of the first driven ratchet wheel and the second driven ratchet wheel are the same as the connection mode of the pawl seat.

Drawings

Fig. 1 is a cut-away isometric view of an embodiment of an external engagement embodiment in which the pawls of a multi-pawl one-way clutch are unitary pawls according to the present invention.

Fig. 2 is an exploded isometric view of an embodiment of an external engagement embodiment in which the pawls of a multi-pawl one-way clutch are integral pawls according to the present invention.

Fig. 3 is a schematic diagram of the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the pawl of the multi-ratchet one-way clutch according to the present invention is an external engagement embodiment of the integral pawl.

Fig. 4 is a schematic diagram of the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the pawl of the multi-ratchet one-way clutch according to the present invention is an external engagement embodiment of the integral pawl rotating in the idle direction.

Fig. 5 is a cut-away isometric view of an embodiment of an inner gearing in which the pawls of a multi-pawl one-way clutch are integral pawls according to the present invention.

Fig. 6 is an exploded isometric view of an embodiment of an inner gearing in which the pawls of a multi-pawl one-way clutch are integral pawls according to the present invention.

Fig. 7 is a schematic diagram showing the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the pawl of the multi-pawl one-way clutch according to the present invention is an internal engagement embodiment of the integral pawl.

Fig. 8 is a schematic diagram showing the relative position relationship of the driving ratchet, the driven ratchet set and the pawls when the pawls of the multi-ratchet one-way clutch according to the present invention are the internal engagement embodiment of the integral pawls rotating in the idle direction.

Fig. 9 is a cut-away isometric view of an embodiment of an external engagement embodiment in which the pawl of the multi-ratchet one-way clutch is a unitary pawl, further including a third driven ratchet, according to the present invention.

Fig. 10 is an exploded isometric view of an outer-mesh embodiment of a driven ratchet set with the pawls of a multi-ratchet one-way clutch according to the present invention being a unitary pawl, further including a third driven ratchet.

Fig. 11 is a schematic diagram showing the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the pawl of the multi-ratchet one-way clutch provided by the present invention is an integral pawl and the external-meshing embodiment of the third driven ratchet rotates in the locking direction.

Fig. 12 is a schematic diagram of the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the external-meshing embodiment of the third driven ratchet is rotated in the idle direction according to the driven ratchet set of the multi-ratchet one-way clutch provided by the present invention in which the pawl is an integral pawl.

Fig. 13 is a cut-away isometric view of an embodiment of an inner gearing in which the driven ratchet set of the multi-ratchet one-way clutch, with the pawls being unitary pawls, further includes a third driven ratchet, according to the present invention.

Fig. 14 is an exploded isometric view of an embodiment of an inner gearing of a driven ratchet set with pawls as integral pawls of a multi-ratchet one-way clutch according to the present invention, further including a third driven ratchet.

Fig. 15 is a schematic diagram of the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the pawl of the multi-ratchet one-way clutch provided by the utility model is an integral pawl and the inner engagement embodiment of the third driven ratchet rotates along the locking direction.

Fig. 16 is a schematic diagram of the relative position relationship of the driving ratchet, the driven ratchet set and the pawl when the pawl of the multi-ratchet one-way clutch provided by the utility model is an integral pawl and the inner engagement embodiment of the third driven ratchet rotates along the idle rotation direction.

Fig. 17 is a schematic view of a pawl of an outer meshing embodiment of a pawl including a master pawl and a slave pawl of a multi-ratchet one-way clutch according to the present invention.

Fig. 18 is a cut-away isometric view of an embodiment of a pawl of a multi-ratchet one-way clutch including an outer engagement of a primary pawl and a secondary pawl according to the present invention.

Fig. 19 is a cut-away isometric view of an embodiment of an outer mesh of a driven ratchet set of a multi-ratchet one-way clutch according to the present invention, the driven ratchet set including a master pawl and a slave pawl, and further including a third driven ratchet.

Fig. 20 is a schematic view of a pawl of a multi-ratchet one-way clutch according to the present invention, including a master pawl and a slave pawl, with an outer mesh embodiment of the slave pawl wheel provided on the slave pawl.

Fig. 21 is a cut-away isometric view of a pawl of a multi-ratchet one-way clutch according to the present invention including a master pawl and a slave pawl and with an outer meshing embodiment of the slave pawl wheel provided on the slave pawl.

Fig. 22 is a cut-away isometric view of an outer mesh embodiment of a pawl of a multi-ratchet one-way clutch according to the present invention including a master pawl and a slave ratchet set with slave pawl wheels disposed on the slave pawl further including a third slave ratchet.

Fig. 23 is a schematic view of a pawl according to an embodiment of the present invention, wherein the pawl of the multi-ratchet one-way clutch is a unitary pawl and the unitary pawl is provided with an outer engagement embodiment of a pawl wheel.

Fig. 24 is a cross-sectional isometric view of an embodiment of a multi-ratchet one-way clutch according to the present invention in which the pawl is a unitary pawl and the unitary pawl is provided with an outer mesh of the pawl wheel.

Fig. 25 is a cut-away isometric view of an embodiment of the pawl of the multi-ratchet one-way clutch according to the present invention being a unitary pawl and the driven ratchet set with the pawl wheel on the unitary pawl further including an outer mesh of the third driven ratchet.

Fig. 26 is a schematic view of a pawl of a multi-ratchet one-way clutch according to an embodiment of the present invention, including an inter-meshing embodiment of a master pawl and a slave pawl.

Fig. 27 is a cut-away isometric view of an embodiment of a pawl of a multi-ratchet one-way clutch including inter-engagement of a primary pawl and a secondary pawl according to the present invention.

Fig. 28 is a cut-away isometric view of an inner meshing embodiment of a driven ratchet set of a multi-ratchet one-way clutch according to the present invention, with the pawls including a master pawl and a slave pawl, and further including a third driven ratchet.

Fig. 29 is a schematic view of a pawl of a multi-ratchet one-way clutch according to the present invention, including a master pawl and a slave pawl, with an embodiment of inter-engagement of the slave pawl with a wheel of the slave pawl.

Fig. 30 is a cut-away isometric view of an embodiment of a pawl of a multi-ratchet one-way clutch according to the present invention including a master pawl and a slave pawl and with an inter-engagement on the slave pawl with a slave pawl wheel.

Fig. 31 is a cut-away isometric view of an inner gearing embodiment where the pawl of the multi-ratchet one-way clutch includes a master pawl and a slave pawl and where the slave pawl set with slave pawl wheels on the slave pawl further includes a third slave ratchet wheel, according to the present invention.

Fig. 32 is a schematic view of a pawl according to an embodiment of the present invention, wherein the pawl of the multi-ratchet one-way clutch is a unitary pawl and the unitary pawl is provided with an inter-engagement embodiment of a pawl wheel.

Fig. 33 is a cross-sectional isometric view of an embodiment of the pawl of the multi-ratchet one-way clutch according to the present invention being a unitary pawl and having an internal gearing of the pawl wheel provided on the unitary pawl.

Fig. 34 is a cut-away isometric view of an embodiment of the pawl of the multi-ratchet one-way clutch according to the present invention being a unitary pawl and the driven ratchet set with the pawl wheel on the unitary pawl further including an internal engagement of the third driven ratchet.

The symbols in the drawings illustrate that:

1-driving ratchet wheel; 2-a pawl; 3-an elastic element; 4-pawl seat;

5-driving ratchet wheel; 6-pawl; 7-a resilient element; 8-pawl seat;

11-a first driven ratchet; 12-a second driven ratchet; 13-a third driven ratchet;

17-a positioning key; 18-a positioning groove; 19-a positioning groove;

21-an integral pawl; 22-primary pawl; 23-slave pawl; 24-slave ratchet wheel; 25-a ratchet wheel;

27-a positioning key; 28-positioning grooves;

31-a resilient element retainer;

41-driven ratchet rack; 42-driven ratchet bearing ring; 43-rolling bodies; 44-a bearing; 45-clamp spring; 46-a clamp spring;

51-a first driven ratchet; 52-second driven ratchet; 53-third driven ratchet;

57-alignment key; 58-positioning groove; 59-positioning grooves;

61-integral detents; 62-a primary pawl; 63-slave pawl; 64-slave pawl wheel; 65-a ratchet wheel;

67-an alignment key; 68-positioning grooves;

71-a resilient element retainer;

81-driven ratchet rack; 82-driven ratchet bearing ring; 83-rolling bodies; 84-a bearing; 85-a clamp spring; 86-clamp spring.

Detailed Description

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1-4 show an external engaging embodiment of a multi-ratchet one-way clutch, in which the pawl is an integral pawl, and the external engaging embodiment mainly comprises a driving ratchet 1, a pawl 2, an elastic element 3, a pawl seat 4, a driven ratchet set: one or more pawls 2 are arranged on the pawl seat 4; the elastic element 3 is connected with the pawl 2; the number of the elastic members 3 is one or more.

The driven ratchet set in this embodiment comprises a first driven ratchet 11 and a second driven ratchet 12.

The driving ratchet 1, the first driven ratchet 11 and the second driven ratchet 12 are all connected with the pawl seat 4, can rotate relative to the pawl seat 4, and can be connected with the pawl seat 4 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling bodies; preferably, the active ratchet 1 is connected with the pawl seat 4 through a bearing 44; preferably, the first driven ratchet wheel 11 and the second driven ratchet wheel 12 are both connected with the pawl seat 4 through rolling bodies 43; preferably, a driven ratchet bearing ring 42 and a driven ratchet rack 41 are further arranged between the rolling body 43 and the pawl seat 4.

The pawl seat 4 is used as an outer ring or a shell of the one-way clutch, the driving ratchet 1 is used as an inner ring or a shaft of the one-way clutch, and the driving ratchet 1, the first driven ratchet 11 and the second driven ratchet 12 are all external tooth ratchets.

Preferably, the tooth pitch of the first driven ratchet wheel 11 is smaller than the sum of the tooth top arc length of the first driven ratchet wheel 11 and the tooth top arc length of the second driven ratchet wheel 12, neglecting errors.

The pawl 2 in this embodiment is an integral pawl 21, and when the multi-ratchet one-way clutch rotates in the idling direction, the integral pawl 21 contacts with the driven ratchet set by taking the driving ratchet 1 as a reference system, and the integral pawl 21 slides on the driven ratchet set.

The driving ratchet 1 is provided with a driving coupling structure, and the driven ratchet group is provided with a driven coupling structure; the slave coupling arrangement comprises a first coupling arrangement provided on the first driven ratchet 11 and a second coupling arrangement provided on the second driven ratchet 12; taking the pawl seat 4 as a reference system, the driving ratchet 1 drives the driven ratchet group to rotate through the main coupling structure and the driven coupling structure, and controls the relative position of the driving ratchet 1 and a ratchet in the driven ratchet group; preferably, the main coupling structure arranged on the driving ratchet 1 is a positioning key 17, the first coupling structure arranged on the first driven ratchet 11 is a positioning groove 18, the second coupling structure arranged on the second driven ratchet 12 is a positioning groove 19, and with the pawl seat 4 as a reference system, the driving ratchet 1 controls the relative positions of the driving ratchet 1 and the first driven ratchet 11 and the second driven ratchet 12 by the cooperation of the positioning key 17, the positioning groove 18 and the positioning groove 19, and drives the first driven ratchet 11 and the second driven ratchet 12 to rotate.

Fig. 1 and 3 show an external engagement embodiment in which the pawls of the multi-ratchet one-way clutch are integral pawls, when the multi-ratchet one-way clutch rotates in the locking direction, the driving ratchet 1 drives the first driven ratchet 11 and the second driven ratchet 12 to rotate by using the pawl seat 4 as a reference system, and after the tooth socket of the first driven ratchet 11 and the tooth socket of the second driven ratchet 12 are axially overlapped, the pawl 2 can enter the tooth sockets of the first driven ratchet 11 and the second driven ratchet 12, and at this time, the pawl 2 can be embedded with the tooth socket of the driving ratchet 1; the ratchet shape of the driving ratchet 1 and the ratchet shape of the first and second driven

ratchets

11 and 12 may be the same or different.

As shown in fig. 1 and 4, according to the present invention, when the multi-ratchet one-way clutch rotates in the idling direction, the driving ratchet 1 drives the first driven ratchet 11 and the second driven ratchet 12 to rotate by using the pawl seat 4 as the reference system, so that the tooth tops of the first driven ratchet 11 and the second driven ratchet 12 are complementary in the axial direction, and then the pawl 2 moves on the tooth tops of the first driven ratchet 11 and the second driven ratchet 12 by using the driving ratchet 1 as the reference system, and the pawl 2 does not contact with the driving ratchet 1; the diameter of the addendum circle of the driving ratchet 1 and the diameters of the addendum circles of the first and second driven

ratchets

11 and 12 may be the same or different, and the pawl 2 may not contact the driving ratchet 1 by changing the diameter of the addendum circle of the driving ratchet 1, or the pawl 2 may not contact the driving ratchet 1 by changing the shape of the pawl 2.

Preferably, the tooth pitch of the first driven ratchet wheel 11 is smaller than the sum of the tooth top arc length of the first driven ratchet wheel 11 and the tooth top arc length of the second driven ratchet wheel 12, so that the tooth top arc of the first driven ratchet wheel 11 and the tooth top arc of the second driven ratchet wheel 12 have an overlap and/or intersection point in the axial direction, the pawl 2 reaches the tooth top of the second driven ratchet wheel 12 before departing from the end of the tooth top of the first driven ratchet wheel 11, and the pawl 2 reaches the tooth top of the first driven ratchet wheel 11 before departing from the end of the tooth top of the second driven ratchet wheel 12.

As shown in fig. 5-8, the inner engagement embodiment of the multi-ratchet one-way clutch, in which the pawl is an integral pawl, mainly includes a driving ratchet 5, a pawl 6, an elastic element 7, a pawl seat 8, and a driven ratchet set: one or more pawls 6 are arranged on the pawl seat 8; the elastic element 7 is connected with the pawl 6; the number of the elastic elements 7 is one or more.

The driven ratchet set in this embodiment comprises a first driven ratchet 51 and a second driven ratchet 52.

The driving ratchet wheel 5, the first driven ratchet wheel 51 and the second driven ratchet wheel 52 are all connected with the pawl seat 8, can rotate relative to the pawl seat 8, and can be connected with the pawl seat 8 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling bodies; preferably, the active ratchet 5 is connected with the pawl seat 8 through a bearing 84; preferably, the first driven ratchet 51 and the second driven ratchet 52 are both connected with the pawl seat 8 through rolling bodies 83; preferably, a driven ratchet bearing ring 82 and a driven ratchet rack 81 are further provided between the rolling body 83 and the pawl seat 8.

The pawl seat 8 is used as an inner ring or a shaft of the one-way clutch, the driving ratchet 5 is used as an outer ring or a shell of the one-way clutch, and the driving ratchet 5, the first driven ratchet 51 and the second driven ratchet 52 are all internal tooth ratchets.

Preferably, the tooth pitch of the first driven ratchet 51 is smaller than the sum of the tooth top arc length of the first driven ratchet 51 and the tooth top arc length of the second driven ratchet 52, neglecting errors.

The pawl 6 in this embodiment is an integral pawl 61, and when the multi-ratchet one-way clutch rotates in the idling direction, the integral pawl 61 contacts with the driven ratchet set by taking the driving ratchet 5 as a reference system, and the integral pawl 61 slides on the driven ratchet set.

The driving ratchet wheel 5 is provided with a driving coupling structure, and the driven ratchet wheel group is provided with a driven coupling structure; the slave coupling arrangement comprises a first coupling arrangement provided on the first driven ratchet 51 and a second coupling arrangement provided on the second driven ratchet 52; taking the pawl seat 8 as a reference system, the driving ratchet 5 drives the driven ratchet group to rotate through the main coupling structure and the driven coupling structure, and controls the relative position of the driving ratchet and the ratchet in the driven ratchet group; preferably, the main coupling structure arranged on the driving ratchet 5 is a positioning key 57, the first coupling structure arranged on the first driven ratchet 51 is a positioning groove 58, the second coupling structure arranged on the second driven ratchet 52 is a positioning groove 59, and with the pawl seat 8 as a reference system, the driving ratchet 5 cooperates with the positioning groove 58 and the positioning groove 59 through the positioning key 57 to control the relative positions of the driving ratchet 5 and the first driven ratchet 51 and the second driven ratchet 52, and drives the first driven ratchet 51 and the second driven ratchet 52 to rotate.

As shown in fig. 5 and 7, the multi-ratchet one-way clutch according to the present invention has an inner engagement embodiment in which the pawls are integral pawls, when the multi-ratchet one-way clutch rotates in the locking direction, the driving ratchet 5 drives the first driven ratchet 51 and the second driven ratchet 52 to rotate by taking the pawl seat 8 as a reference system, after the tooth spaces of the first driven ratchet 51 and the second driven ratchet 52 are axially overlapped, the pawl 6 can enter the tooth spaces of the first driven ratchet 51 and the second driven ratchet 52, and at this time, the pawl 6 can be engaged with the tooth space of the driving ratchet 5; the ratchet shape of the driving ratchet 5 may be the same as or different from the ratchet shapes of the first driven ratchet 51 and the second driven ratchet 52.

As shown in fig. 5 and 8, the multi-ratchet one-way clutch according to the present invention has an inner engagement embodiment in which the pawls are integral pawls, when the multi-ratchet one-way clutch rotates in the idling direction, the pawl seat 8 is used as a reference system, the driving ratchet 5 drives the first driven ratchet 51 and the second driven ratchet 52 to rotate, so that the tooth tips of the first driven ratchet 51 and the second driven ratchet 52 are complementary in the axial direction, and then the driving ratchet 5 is used as a reference system, the pawls 6 move on the tooth tips of the first driven ratchet 51 and the second driven ratchet 52, and the pawls 6 do not contact with the driving ratchet 5; the diameter of the addendum circle of the driving ratchet 5 may be the same as or different from the diameters of the addendum circles of the first and second driven

ratchets

51 and 52, and the pawl 6 may be made not to contact the driving ratchet 5 by changing the diameter of the addendum circle of the driving ratchet 5, or the pawl 6 may be made not to contact the driving ratchet 5 by changing the shape of the pawl 6.

Preferably, the tooth pitch of the first driven ratchet 51 is smaller than the sum of the tooth crest arc length of the first driven ratchet 51 and the tooth crest arc length of the second driven ratchet 52, so that the tooth crest arcs of the first driven ratchet 51 and the tooth crest arcs of the second driven ratchet 52 overlap and/or intersect in the axial direction, the pawls 6 reach the tooth crests of the second driven ratchet 52 before departing from the ends of the tooth crests of the first driven ratchet 51, and the pawls 6 reach the tooth crests of the first driven ratchet 51 before departing from the ends of the tooth crests of the second driven ratchet 52.

As shown in fig. 9-12, the driven ratchet set of the multi-ratchet one-way clutch, in which the pawl is an integral pawl, further includes an external engagement embodiment of a third driven ratchet, which mainly includes a driving ratchet 1, a pawl 2, an elastic element 3, a pawl seat 4, and a driven ratchet set: one or more pawls 2 are arranged on the pawl seat 4; the elastic element 3 is connected with the pawl 2; the number of the elastic members 3 is one or more.

The driven ratchet set in this embodiment includes a first driven ratchet 11, a second driven ratchet 12, and a third driven ratchet 13.

The driving ratchet 1, the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13 are all connected with the pawl seat 4, can rotate relative to the pawl seat 4, and can be connected with the pawl seat 4 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling bodies; preferably, the active ratchet 1 is connected with the pawl seat 4 through a bearing 44; preferably, the first driven ratchet wheel 11, the second driven ratchet wheel 12 and the third driven ratchet wheel 13 are all connected with the pawl seat 4 through rolling bodies 43; preferably, a driven ratchet bearing ring 42 and a driven ratchet rack 41 are further arranged between the rolling body 43 and the pawl seat 4.

The pawl seat 4 is used as an outer ring or a shell of the one-way clutch, the driving ratchet 1 is used as an inner ring or a shaft of the one-way clutch, and the driving ratchet 1, the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13 are all external tooth ratchets.

Preferably, the tooth space of the first driven ratchet wheel 11 is smaller than the sum of the tooth top arc length of the first driven ratchet wheel 11 and the tooth top arc length of the second driven ratchet wheel 12 under the condition of neglecting errors; preferably, the tooth top arc length of the first driven ratchet wheel 11 is equal to the tooth top arc length of the third driven ratchet wheel 13, ignoring errors.

The driving ratchet 1 is provided with a driving coupling structure, and the driven ratchet group is provided with a driven coupling structure; the slave coupling structure comprises a first coupling structure arranged on the first driven ratchet wheel 11, a second coupling structure arranged on the second driven ratchet wheel 12 and a third coupling structure arranged on the third driven ratchet wheel 13; taking the pawl seat 4 as a reference system, the driving ratchet 1 drives the driven ratchet group to rotate through the main coupling structure and the driven coupling structure, and controls the relative position of the driving ratchet and the ratchet in the driven ratchet group; preferably, the main coupling structure arranged on the driving ratchet 1 is a positioning key 17, the first coupling structure arranged on the first driven ratchet 11 is a positioning groove 18, the second coupling structure arranged on the second driven ratchet 12 is a positioning groove 19, the third coupling structure arranged on the third driven ratchet 13 is a positioning groove 18, the pawl seat 4 is taken as a reference system, and the driving ratchet 1 is matched with the positioning groove 18 and the positioning groove 19 through the positioning key 17 to control the relative positions of the driving ratchet 1, the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13 and drive the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13 to rotate.

As shown in fig. 9 and 11, the driven ratchet set with the pawl as the integral pawl of the multi-ratchet one-way clutch proposed by the present invention further includes an external engagement embodiment of a third driven ratchet, when the multi-ratchet one-way clutch rotates in the locking direction, the driving ratchet 1 drives the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13 to rotate by taking the pawl seat 4 as a reference system, after the tooth spaces of the first driven ratchet 11 and the third driven ratchet 13 are axially overlapped with the tooth spaces of the second driven ratchet 12, the pawl 2 can enter the tooth spaces of the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13, and at this time, the pawl 2 can be embedded with the tooth space of the driving ratchet 1; the ratchet shape of the driving ratchet 1 may be the same as or different from the ratchet shapes of the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13.

As shown in fig. 9 and 12, the driven ratchet set of the multi-ratchet one-way clutch provided by the present invention, in which the pawls are integral pawls, further includes an external engagement embodiment of a third driven ratchet, when the multi-ratchet one-way clutch rotates in the idling direction, the driving ratchet 1 drives the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13 to rotate by taking the pawl seat 4 as a reference system, so that the tooth tops of the first driven ratchet 11 and the third driven ratchet 13 and the tooth top of the second driven ratchet 12 are complementary in the axial direction, and after the driving ratchet 1 is taken as a reference system, the pawl 2 moves on the tooth tops of the first driven ratchet 11 and the third driven ratchet 13 and the tooth top of the second driven ratchet 12, and the pawl 2 does not contact with the driving ratchet 1; the diameter of the addendum circle of the driving ratchet 1 may be the same as or different from the diameters of the addendum circles of the first driven ratchet 11, the second driven ratchet 12 and the third driven ratchet 13, and the pawl 2 may not contact the driving ratchet 1 by changing the diameter of the addendum circle of the driving ratchet 1 or the pawl 2 may not contact the driving ratchet 1 by changing the shape of the pawl 2.

Preferably, the tooth pitch of the first driven ratchet 11 is smaller than the sum of the tooth top arc length of the first driven ratchet 11 and the tooth top arc length of the second driven ratchet 12, so that the tooth top arcs of the first driven ratchet 11 and/or the third driven ratchet 13 and the tooth top arcs of the second driven ratchet 12 have coincidence and/or intersection points in the axial direction, the pawl 2 reaches the tooth top of the second driven ratchet 12 before leaving the end of the tooth top of the first driven ratchet 11 and/or the third driven ratchet 13, and the pawl 2 reaches the tooth top of the first driven ratchet 11 and/or the third driven ratchet 13 before leaving the end of the tooth top of the second driven ratchet 12.

As shown in fig. 13-16, the driven ratchet set of the multi-ratchet one-way clutch, in which the pawl is an integral pawl, further includes an internal engagement embodiment of a third driven ratchet, which mainly includes a driving ratchet 5, a pawl 6, an elastic element 7, a pawl seat 8, and a driven ratchet set: one or more pawls 6 are arranged on the pawl seat 8; the elastic element 7 is connected with the pawl 6; the number of the elastic elements 7 is one or more.

The driven ratchet set in this embodiment includes a first driven ratchet 51, a second driven ratchet 52 and a third driven ratchet 53.

The driving ratchet wheel 5, the first driven ratchet wheel 51, the second driven ratchet wheel 52 and the third driven ratchet wheel 53 are all connected with the pawl seat 8, can rotate relative to the pawl seat 8, and can be connected with the pawl seat 8 through shaft hole clearance fit, sliding bearings, rolling bearings or rolling bodies; preferably, the active ratchet 5 is connected with the pawl seat 8 through a bearing 84; preferably, the first driven ratchet wheel 51, the second driven ratchet wheel 52 and the third driven ratchet wheel 53 are all connected with the pawl seat 8 through rolling bodies 83; preferably, a driven ratchet bearing ring 82 and a driven ratchet rack 81 are further provided between the rolling body 83 and the pawl seat 8.

The pawl seat 8 is used as an inner ring or a shaft of the one-way clutch, the driving ratchet 5 is used as an outer ring or a shell of the one-way clutch, and the driving ratchet 5, the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53 are all internal tooth ratchets.

Preferably, the tooth pitch of the first driven ratchet 51 is smaller than the sum of the tooth top arc length of the first driven ratchet 51 and the tooth top arc length of the second driven ratchet 52, ignoring errors; preferably, the tooth top arc length of the first driven ratchet 51 is equal to the tooth top arc length of the third driven ratchet 53, ignoring errors.

The driving ratchet wheel 5 is provided with a driving coupling structure, and the driven ratchet wheel group is provided with a driven coupling structure; the slave coupling structure comprises a first coupling structure provided on the first driven ratchet 51, a second coupling structure provided on the second driven ratchet 52 and a third coupling structure provided on the third driven ratchet 53; taking the pawl seat 8 as a reference system, the driving ratchet 5 drives the driven ratchet group to rotate through the main coupling structure and the driven coupling structure, and controls the relative position of the driving ratchet and the ratchet in the driven ratchet group; preferably, the main coupling structure arranged on the driving ratchet 5 is a positioning key 57, the first coupling structure arranged on the first driven ratchet 51 is a positioning groove 58, the second coupling structure arranged on the second driven ratchet 52 is a positioning groove 59, the third coupling structure arranged on the third driven ratchet 53 is a positioning groove 58, the pawl seat 8 is taken as a reference system, and the driving ratchet 5 cooperates with the positioning groove 58 and the positioning groove 59 through the positioning key 57 to control the relative positions of the driving ratchet 5, the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53, and drives the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53 to rotate.

As shown in fig. 13 and 15, the driven ratchet set with the pawl as the integral pawl of the multi-ratchet one-way clutch proposed by the present invention further includes an inner engagement embodiment of a third driven ratchet, when the multi-ratchet one-way clutch rotates in the locking direction, the driving ratchet 5 drives the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53 to rotate with reference to the pawl seat 8, after the tooth spaces of the first driven ratchet 51 and the third driven ratchet 53 are axially overlapped with the tooth spaces of the second driven ratchet 52, the pawl 6 can enter the tooth spaces of the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53, and at this time, the pawl 6 can be engaged with the tooth space of the driving ratchet 5; the ratchet shape of the driving ratchet 5 may be the same as or different from the ratchet shapes of the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53.

As shown in fig. 13 and 16, the driven ratchet set of the multi-ratchet one-way clutch according to the present invention, in which the pawls are integral pawls, further includes an inner engagement embodiment of a third driven ratchet, when the multi-ratchet one-way clutch rotates in the idling direction, the driving ratchet 5 drives the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53 to rotate by taking the pawl seat 8 as a reference system, so that the tooth tops of the first driven ratchet 51 and the third driven ratchet 53 and the tooth top of the second driven ratchet 52 are complementary in the axial direction, and then the pawl 6 moves on the tooth tops of the first driven ratchet 51 and the third driven ratchet 53 and the tooth top of the second driven ratchet 52 by taking the driving ratchet 5 as a reference system, and the pawl 6 does not contact with the driving ratchet 5; the diameter of the addendum circle of the driving ratchet 5 may be the same as or different from the diameters of the addendum circles of the first driven ratchet 51, the second driven ratchet 52 and the third driven ratchet 53, and the pawl 6 may be prevented from contacting the driving ratchet 5 by changing the diameter of the addendum circle of the driving ratchet 5 or the pawl 6 may be prevented from contacting the driving ratchet 5 by changing the shape of the pawl 6.

Preferably, the tooth pitch of the first driven ratchet 51 is smaller than the sum of the tooth top arc length of the first driven ratchet 51 and the tooth top arc length of the second driven ratchet 52, so that the tooth top arcs of the first driven ratchet 51 and/or the third driven ratchet 53 and the tooth top arcs of the second driven ratchet 52 have coincidence and/or intersection points in the axial direction, the pawl 6 reaches the tooth top of the second driven ratchet 52 before departing from the end of the tooth top of the first driven ratchet 51 and/or the third driven ratchet 53, and the pawl 6 reaches the tooth top of the first driven ratchet 51 and/or the third driven ratchet 53 before departing from the end of the tooth top of the second driven ratchet 52.

Two external engagement embodiments are shown in fig. 1-4, 9-12, wherein: one or more of a shoulder, a sleeve, a nut, a shaft end retainer, a circlip, a thrust washer, a locating sleeve, a locking screw, an end cap, a threaded ring, a snap spring, a snap ring, a stop ring, a screw, a weld, and an interference fit may be used to secure the bearing 44, the driven ratchet bearing ring 42, and the driven ratchet frame 41. The elastic element 3 can act on one or more positions of the whole pawl 2, the pawl 2 on one side of the driving ratchet wheel 1 and the pawl 2 on one side of the driven ratchet wheel group; preferably, the elastic element 3 acts on the side of the pawl 2 on the driven ratchet group, and the elastic element positioning member 31 is used for limiting the position of the elastic element 3; the elastic element 3 is a part or component which utilizes the elastic property of the material to ensure that the pawl 2 is meshed with the active ratchet 1 when the multi-ratchet one-way clutch rotates along the locking direction, and can adopt a spiral spring, a leaf spring, a coil spring, a pressure spring pipe, a corrugated pipe, a diaphragm spring, a wire spring or a special-shaped spring, one integrally formed elastic element can act on one or more pawls 2, and preferably, each pawl 2 is connected with one elastic element 3.

Two inter-engaging embodiments are shown in fig. 5-8, fig. 13-16, wherein: one or more of a shoulder, a sleeve, a nut, a shaft end retainer, a circlip, a thrust washer, a locating sleeve, a set screw, an end cap, a threaded ring, a snap spring, a stop ring, a screw, a weld, and an interference fit may be used to secure the bearing 84, the driven ratchet bearing ring 82, and the driven ratchet frame 81. The elastic element 7 can act on one or more positions of the whole pawl 6, the pawl 6 on one side of the driving ratchet 5 and the pawl 6 on one side of the driven ratchet group; preferably, the elastic element 7 acts on the side of the pawl 6 on the driven ratchet group, and the elastic element positioning piece 71 is used for limiting the position of the elastic element 7; the elastic element 7 is a part or component for ensuring that the pawl 6 is engaged with the driving ratchet 5 when the multi-ratchet one-way clutch rotates along the locking direction by utilizing the elastic property of the material, and can adopt a spiral spring, a leaf spring, a coil spring, a pressure spring tube, a corrugated tube, a diaphragm spring, a wire spring or a special-shaped spring, an integrally formed elastic element can act on one or more pawls 6, and preferably, each pawl 6 is connected with one elastic element 7.

The embodiment of the pawl 2 as shown in fig. 2, 10 and 17-25 may be one or more of the pawl 2 being a unitary pawl 21, the pawl 2 comprising a master pawl 22 and a slave pawl 23 with a slave pawl wheel 24 provided on the slave pawl 23, the pawl 2 being a unitary pawl 21 with a pawl wheel 25 provided on the unitary pawl 21.

Fig. 17-19 show an embodiment of the external engagement of the pawls of the multi-ratchet one-way clutch according to the present invention, including a master pawl and a slave pawl:

the pawl 2 in the embodiment comprises a main pawl 22 and a slave pawl 23, and the slave pawl 23 can drive the main pawl 22 to be engaged with or disengaged from the driving ratchet wheel 1; the pawl 2 is contacted with the driven ratchet set through the slave pawl 23, and when the multi-ratchet one-way clutch rotates in the idling direction, the pawl 2 slides on the driven ratchet set through the slave pawl 23 by taking the driving ratchet 1 as a reference system;

the auxiliary pawl 23 can drive the main pawl 22 to be engaged with or separated from the driving ratchet 1 by arranging one or more structures of a bulge, a groove, a positioning key and a positioning groove on the main pawl 22 and/or the auxiliary pawl 23; preferably, positioning key 27 is provided on primary pawl 22, positioning slot 28 is provided on secondary pawl 23, and secondary pawl 23 carries primary pawl 22 through positioning slot 28 and positioning key 27.

As shown in fig. 20-22, the pawl of the multi-ratchet one-way clutch proposed by the present invention includes a master pawl and a slave pawl, and the slave pawl is provided with an external engagement embodiment of a slave pawl wheel:

the pawl 2 in the embodiment comprises a main pawl 22 and a slave pawl 23, a slave pawl wheel 24 is arranged on the slave pawl 23, and the slave pawl 23 can drive the main pawl 22 to be meshed with or separated from the driving ratchet wheel 1; the pawl 2 is contacted with the driven ratchet set through the slave pawl wheel 24, when the multi-ratchet one-way clutch rotates in an idling direction, the pawl 2 moves on the driven ratchet set through the slave pawl wheel 24 by taking the driving ratchet 1 as a reference system;

Fig. 23 to 25 show an external engagement embodiment in which the pawl of the multi-ratchet one-way clutch according to the present invention is a unitary pawl and the unitary pawl is provided with a pawl wheel:

the pawl 2 in this embodiment is an integral pawl 21, a pawl wheel 25 is arranged on the integral pawl 21, the pawl 2 is in contact with the driven ratchet set through the pawl wheel 25, and when the multi-ratchet one-way clutch rotates in an idling direction, the pawl 2 moves on the driven ratchet set through the pawl wheel 25 by taking the driving ratchet 1 as a reference system.

The embodiment of the pawl 6 as shown in fig. 6, 14, 26-34 may be one or more of the pawl 6 being a unitary pawl 61, the pawl 6 including a master pawl 62 and a slave pawl 63 with a slave pawl wheel 64 provided on the slave pawl 63, the pawl 6 being a unitary pawl 61 with a pawl wheel 65 provided on the unitary pawl 61.

As shown in fig. 26-28, the pawl of the multi-ratchet one-way clutch according to the present invention includes an embodiment of inter-engagement of a primary pawl and a secondary pawl:

the pawl 6 in this embodiment comprises a main pawl 62 and a slave pawl 63, and the slave pawl 63 can drive the main pawl 62 to be engaged with or disengaged from the driving ratchet wheel 5; the pawl 6 is contacted with the driven ratchet set through the slave pawl 63, and when the multi-ratchet one-way clutch rotates in the idling direction, the pawl 6 slides on the driven ratchet set through the slave pawl 63 by taking the driving ratchet 5 as a reference system;

the auxiliary pawl 63 can drive the main pawl 62 to be engaged with or disengaged from the driving ratchet wheel 5 by arranging one or more structures of a bulge, a groove, a positioning key and a positioning groove on the main pawl 62 and/or the auxiliary pawl 63; preferably, the primary pawl 62 is provided with a positioning key 67, the secondary pawl 63 is provided with a positioning slot 68, and the secondary pawl 63 drives the primary pawl 62 through the positioning slot 68 and the positioning key 67.

As shown in fig. 29 to 31, the pawl of the multi-ratchet one-way clutch proposed by the present invention includes a master pawl and a slave pawl, and the slave pawl is provided with an inner meshing embodiment of a slave pawl wheel:

the pawl 6 in the embodiment comprises a main pawl 62 and a slave pawl 63, a slave pawl wheel 64 is arranged on the slave pawl 63, and the slave pawl 63 can drive the main pawl 62 to be meshed with or separated from the driving ratchet wheel 5; the pawl 6 is contacted with the driven ratchet set through the slave pawl wheel 64, when the multi-ratchet one-way clutch rotates in an idling direction, the pawl 6 moves on the driven ratchet set through the slave pawl wheel 64 by taking the driving ratchet 5 as a reference system;

Fig. 32-34 show an example of the inner gearing of a multi-ratchet one-way clutch according to the present invention in which the pawls are integral pawls and the integral pawls are provided with pawl wheels:

the pawl 6 in this embodiment is an integral pawl 61, a pawl wheel 65 is arranged on the integral pawl 61, the pawl 6 is in contact with the driven ratchet set through the pawl wheel 65, and when the multi-ratchet one-way clutch rotates in an idling direction, the pawl 6 moves on the driven ratchet set through the pawl wheel 65 by taking the driving ratchet 5 as a reference system.

Claims

1. The utility model provides a many ratchet one-way clutch, includes initiative ratchet, pawl, elastic element, pawl seat, driven ratchet group, its characterized in that:

one or more pawls are arranged on the pawl seat;

the driving ratchet wheel is provided with a main coupling structure, and the driven ratchet wheel group is provided with a driven coupling structure; the slave coupling structure comprises a first coupling structure disposed on the first driven ratchet and a second coupling structure disposed on the second driven ratchet; the driving ratchet wheel drives the driven ratchet wheel set to rotate through the main coupling structure and the auxiliary coupling structure by taking the pawl seat as a reference system, and the relative position of the driving ratchet wheel and the driven ratchet wheel set is controlled;

when the multi-ratchet one-way clutch rotates along the direction of idle rotation, the pawl moves on the tooth tops of the first driven ratchet and the second driven ratchet by taking the driving ratchet as a reference system, and the pawl is not in contact with the driving ratchet.

2. The multi-ratchet one-way clutch according to claim 1, wherein said driven ratchet set further comprises a third driven ratchet connected to said pawl holder, said third driven ratchet being rotatable relative to said pawl holder;

when the multi-ratchet one-way clutch rotates in an idling direction, the pawl moves on tooth tops of the first driven ratchet and the third driven ratchet and tooth tops of the second driven ratchet by taking the driving ratchet as a reference system, and the pawl is not in contact with the driving ratchet.

3. A multi-ratchet one-way clutch according to claim 1 or 2, wherein the pawls are integral pawls; when the multi-ratchet one-way clutch rotates along the idling direction, the integral pawl is in contact with the driven ratchet set by taking the driving ratchet as a reference system, and the integral pawl slides on the driven ratchet set.

4. A multi-ratchet one-way clutch according to claim 1 or 2, wherein said pawl comprises a primary pawl and a secondary pawl, said secondary pawl being capable of bringing said primary pawl into and out of engagement with said primary ratchet wheel; the pawl is in contact with the driven ratchet set through the slave pawl, and when the multi-ratchet one-way clutch rotates in a free-wheeling direction, the pawl slides on the driven ratchet set through the slave pawl by taking the master ratchet as a reference system.

5. A multi-ratchet one-way clutch according to claim 1 or 2, wherein the pawl comprises a master pawl and a slave pawl, the slave pawl is provided with a slave pawl wheel, and the slave pawl can drive the master pawl to be engaged with or disengaged from the master ratchet wheel; the pawl is in contact with the driven ratchet wheel set through the slave pawl wheel, and when the multi-ratchet one-way clutch rotates in an idling direction, the pawl moves on the driven ratchet wheel set through the slave pawl wheel by taking the driving ratchet wheel as a reference system.

6. A multi-ratchet one-way clutch according to claim 1 or 2, wherein said pawl is an integral pawl, said integral pawl being provided with a pawl wheel; the pawl is in contact with the driven ratchet wheel set through the pawl wheel, and when the multi-ratchet wheel one-way clutch rotates in an idling direction, the pawl moves on the driven ratchet wheel set through the pawl wheel by taking the driving ratchet wheel as a reference system.

7. The multi-ratchet one-way clutch according to claim 1 or 2, wherein the driving ratchet is connected with the pawl seat through shaft hole clearance fit, a sliding bearing, a rolling bearing or a rolling body; the driven ratchet wheel set is connected with the ratchet seat through shaft hole clearance fit, a sliding bearing, a rolling bearing or a rolling body.

8. A multi-ratchet one-way clutch according to claim 1 or 2, wherein the primary and/or secondary coupling formations are realized in the form of one or more of a protrusion, a groove, a detent.

9. The multi-ratchet one-way clutch according to claim 1 or 2, wherein when the multi-ratchet one-way clutch rotates in an idling direction, the pawls reach the tooth tips of the second driven ratchet before departing from the ends of the tooth tips of the first driven ratchet, with reference to the driving ratchet, and the pawls reach the tooth tips of the first driven ratchet before departing from the ends of the tooth tips of the second driven ratchet.

10. A multi-ratchet one-way clutch according to claim 1 or 2, wherein said resilient elements are parts or members which use the resilient properties of the material to ensure that said pawls engage with said active ratchet when said multi-ratchet one-way clutch is rotated in the locking direction, one said resilient element being operable on one or more of said pawls; the resilient element may act on the entire pawl, on one side of the driving ratchet wheel, or on one or more sides of the driven ratchet wheel set.