WO2021098891A1

WO2021098891A1 - Three-ratchet wheel one-way clutch

Info

Publication number: WO2021098891A1
Application number: PCT/CN2021/072385
Authority: WO
Inventors: 尹世和
Original assignee: 尹世和
Priority date: 2019-11-21
Filing date: 2021-01-18
Publication date: 2021-05-27
Also published as: CN110748581A

Abstract

A three-ratchet wheel one-way clutch, comprising a driving ratchet wheel (1, 5), pawls (2, 6), elastic components (3, 7), a pawl base (4, 8), a front driven ratchet (12, 52), and a rear driven ratchet wheel (15, 55). One or more pawls (2, 6) are arranged on the pawl base (4, 8), and the elastic components (3, 7) are connected to the pawls (2, 6). The driving ratchet wheel (1, 5), the front driven ratchet wheel (12, 52), and the rear driven ratchet wheel (15, 55) are all connected to the pawl base (4, 8), and are all able to rotate relative to the pawl base (4, 8). When the three-ratchet wheel one-way clutch rotates along an unrestricted direction, the pawls (2, 6) move on the tops of the teeth of the front driven ratchet wheel (12, 52) and the rear driven ratchet wheel (15, 55), and the tops of the teeth of the driving ratchet wheel (1, 5).

Description

Three ratchet one-way clutch

Technical field

The invention relates to a one-way clutch, in particular to a three-ratchet one-way clutch.

Background technique

The ratchet clutch is a kind of one-way clutch, which is divided into two types: external meshing and internal meshing ratchet clutch.

At present, most ratchet clutches on the market consist of a ratchet and multiple pawls. When rotating in the idling direction, the pawls will hit the surface of the ratchet under the action of the elastic element and make a noise when rotating in the idling direction. This process will increase the wear of the pawl and the ratchet and reduce the service life of the elastic element. By adopting the double ratchet method, the pawl can prevent the ratchet from hitting the surface of the ratchet when the one-way clutch rotates in the idling direction.

technical problem

The currently disclosed double ratchet type one-way clutch prevents the pawl from hitting the surface of the ratchet wheel by the way that the tooth tops of the driving ratchet wheel and the tooth tops of the driven ratchet wheel complement each other in the axial direction. Because only two ratchet wheels are used, the one-way clutch runs in the idling direction During rotation, when the pawl is in contact with the tooth top of the driving ratchet, the pawl hangs in the air at the position where it will contact the tooth top of the driven ratchet. The wear of the tooth top of the driving ratchet is concentrated on the side close to the driven ratchet. When the pawl is in contact with the tooth top of the driven ratchet, the pawl hangs in the air at the position where it will contact the tooth top of the driving ratchet, and the wear of the tooth top of the driven ratchet is concentrated on the side close to the ratchet of the driving ratchet group ; The uneven wear of the contact surface between the pawl and the driving ratchet and the driven ratchet will have a negative impact on the service life and stability of the one-way clutch.

Technical solutions

The present invention proposes a three-ratchet one-way clutch, which can be divided into two types of implementations: external engagement and internal engagement. When the three-ratchet one-way clutch rotates in an idling direction, the contact surface of the pawl and the driving ratchet, the pawl and the driven The contact surface of the ratchet wheel wears evenly.

In order to achieve the above objective, the technical solution of the present invention is: a three-ratchet one-way clutch, including a driving ratchet, a pawl, an elastic element, a pawl seat, a front driven ratchet, and a rear 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 front driven ratchet is connected to the pawl seat, and the front driven ratchet is rotatable relative to the pawl seat;

The rear driven ratchet is connected to the pawl seat, and the rear driven ratchet is rotatable relative to the pawl seat;

When the implementation of the three-ratchet one-way clutch is externally engaged, 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, and the active ratchet, Both the front driven ratchet and the rear driven ratchet are externally toothed ratchets;

When the implementation of the three-ratchet one-way clutch is internal meshing, the pawl seat serves as the inner ring or shaft of the one-way clutch, the active ratchet serves as the outer ring or the outer shell of the one-way clutch, and the active ratchet, Both the front driven ratchet and the rear driven ratchet are internal tooth ratchets;

The driving ratchet is provided with a main coupling structure, the front driven ratchet is provided with a front-slave coupling structure, and the rear driven ratchet is provided with a rear-slave coupling structure; taking the pawl seat as a frame of reference, The driving ratchet drives the front driven ratchet and the rear driven ratchet to rotate through the main coupling structure, the front-slave coupling structure and the rear-slave coupling structure, and controls the rotation of the front driven ratchet and the rear driven ratchet. The relative position of the rear driven ratchet;

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; the tooth tip of the front driven ratchet is perpendicular to the front driven ratchet The projection on the axial projection surface is the tooth tip arc of the front driven ratchet; the projection of the tooth tip of the rear driven ratchet on the projection plane perpendicular to the axial direction of the rear driven ratchet is the rear The tooth tip arc of the driven ratchet;

When the three-ratchet one-way clutch rotates in the idling direction, using the pawl seat as a reference frame, the driving ratchet first rotates relative to the front driven ratchet and the rear driven ratchet, and then makes the After the tooth tops of the front driven ratchet and the rear driven ratchet are complementary to the tooth tops of the driving ratchet in the axial direction, the driving ratchet drives the front driven ratchet and the rear driven ratchet to rotate to The driving ratchet is a reference frame, and the pawl moves on the tooth tops of the front driven ratchet and the rear driven ratchet and the tooth tops of the driving ratchet.

Further, 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 rear driven ratchet. When the three-ratchet one-way clutch rotates in the idling direction, The driving ratchet is a reference frame, and the pawl reaches the tooth top of the front driven ratchet and/or the rear driven ratchet before leaving the end of the tooth top of the driving ratchet, and the pawl is leaving The tip of the tooth tip of the front driven ratchet and/or the rear driven ratchet reaches the tooth tip of the driving ratchet before.

Further, the tooth tip arcs of the driving ratchet, the front driven ratchet and the rear driven ratchet are concentric arcs in the axial direction, and the driving ratchet, the front driven ratchet and the rear Both ends of the tooth tip arc of the driven ratchet are provided with transition fillets and/or transition chamfers; when the three-ratchet one-way clutch rotates in the idling direction, the pawl seat is used as the reference frame, and the front After the tooth tops of the driven ratchet and the rear driven ratchet are complementary to the tooth tops of the driving ratchet in the axial direction, the tooth tops of the front driven ratchet and/or the rear driven ratchet in the axial direction The middle position of the driving ratchet is close to or coincides with the middle position of the tooth groove of the driving ratchet, and the tooth top arc of the driving ratchet is on the axis with the tooth top arc of the front driven ratchet and/or the rear driven ratchet. Some overlap upwards.

Further, the tooth tip arcs of the driving ratchet and/or the front driven ratchet and/or the rear driven ratchet are not concentric arcs in the axial direction; the three-ratchet one-way clutch is idling along When rotating in the direction of rotation, with the pawl seat as the reference system, after the tooth tops of the front driven ratchet and the rear driven ratchet and the tooth tops of the driving ratchet are complementary in the axial direction, in the axial direction The middle position of the tooth tip of the front driven ratchet and/or the rear driven ratchet is close to or coincides with the middle position of the tooth groove of the driving ratchet, and the tooth tip arc of the driving ratchet is in line with the front The tooth tip arcs of the driven ratchet and/or the rear driven ratchet have intersection points in the axial direction.

Further, the realization form of the main coupling structure and/or the front-slave coupling structure and/or the back-slave coupling structure is one or more of a protrusion, a groove, a positioning key, and a positioning groove, That is, the driving ratchet and/or the front driven ratchet and/or the rear driven ratchet are provided with one or more structures of protrusions, grooves, positioning keys, and positioning grooves, so that the ratchet The pawl seat is the reference frame, and the driving ratchet passes through one of the protrusions, grooves, positioning keys, and positioning grooves provided on the driving ratchet and/or the front driven ratchet and/or the rear driven ratchet. One or more structures drive the front driven ratchet and the rear driven ratchet to rotate.

Further, the driving ratchet is connected to the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling body; the front driven ratchet is connected to the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling body The pawl seat is connected; the rear driven ratchet is connected with the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling body.

Further, the pawl is provided with a pawl wheel; when the three-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, the front driven ratchet and the rear driven ratchet move on top of the teeth.

Further, the elastic element can act on the entire pawl, the pawl is on the side of the driving ratchet, the pawl is on the side of the front driven ratchet, and the pawl is on the rear. One or more locations on one side of the driven ratchet.

Further, 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 three-ratchet one-way clutch rotates in the locking direction, and one elastic element can act on One or more of said pawls.

Beneficial effect

The beneficial effect of the present invention is that when the three-ratchet one-way clutch rotates in the idling direction, when the pawl is in contact with the tooth tip of the driving ratchet, the pawl will be in contact with the front The driven ratchet and the rear driven ratchet are suspended in the air at the position where the tooth tops of the driving ratchet are in contact with the tooth tops. Both ends of the tooth tops of the driving ratchet are subjected to the same pressure from the pawl, and the driving ratchet is in contact with the pawl. The surface wears evenly; when the pawl is in contact with the tooth tops of the front driven ratchet and the rear driven ratchet, the pawl hangs in the air at the position where it will contact the tooth tops of the driving ratchet, The two ends of the tooth tip of the front driven ratchet and the rear driven ratchet are subjected to the same pressure from the pawl, and the front driven ratchet and the rear driven ratchet are on the contact surface with the pawl The wear is uniform.

Description of the drawings

Fig. 1 is a cross-sectional axonometric view of an outer meshing embodiment of a three-ratchet one-way clutch proposed according to the present invention.

Fig. 2 is an exploded isometric view of the outer meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention.

3 is a partial cross-sectional schematic diagram of the relative positional relationship of the driving ratchet, the front driven ratchet, the rear driven ratchet and the pawl when the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention rotates in a locked direction.

4 is a partial cross-sectional schematic diagram of the relative positional relationship of the driving ratchet, the front driven ratchet, the rear driven ratchet and the pawl when the external meshing embodiment of the three-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 three-ratchet one-way clutch proposed according to the present invention.

Fig. 6 is an exploded isometric view of the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention.

7 is a partial cross-sectional schematic diagram of the relative positional relationship of the driving ratchet, the front driven ratchet, the rear driven ratchet and the pawl when the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention rotates in a locked direction.

8 is a partial cross-sectional schematic diagram of the relative positional relationship of the driving ratchet, the front driven ratchet, the rear driven ratchet and the pawl when the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention rotates in an idling direction.

Fig. 9 is a front partial cross-sectional view of an embodiment of the three-ratchet one-way clutch proposed according to the present invention where the main coupling structure is a groove and the front driven ratchet and the rear driven ratchet are provided with protrusions.

10 is a partial cross-sectional schematic view of the reverse side of an embodiment in which the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a groove and the front-slave coupling structure and the rear driven ratchet are provided with protrusions.

Fig. 11 is a front partial cross-sectional view of an embodiment in which the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is convex and the front-slave coupling structure and the rear driven ratchet are provided with grooves.

12 is a partial cross-sectional schematic view of the reverse side of an embodiment of the three-ratchet one-way clutch proposed according to the present invention where the main coupling structure is convex and the front-slave coupling structure and the rear driven ratchet are provided with grooves.

Fig. 13 is a front partial cross-sectional schematic diagram of an outer meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning groove and the front-slave coupling structure and the rear-slave coupling structure are positioning keys.

14 is a partial cross-sectional schematic view of the reverse side of the outer meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning groove and the front-slave coupling structure and the rear-slave coupling structure are positioning keys.

15 is a front partial cross-sectional schematic diagram of the external engagement embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning key and the front-slave coupling structure and the rear-slave coupling structure are positioning grooves.

16 is a partial cross-sectional schematic view of the reverse side of the outer meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning key and the front-slave coupling structure and the rear-slave coupling structure are positioning grooves.

Fig. 17 is a front partial cross-sectional schematic diagram of an internal meshing embodiment in which the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a groove and the front-slave coupling structure and the rear-slave coupling structure are convex.

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 three-ratchet one-way clutch proposed according to the present invention is a groove and the front-slave coupling structure and the rear-slave coupling structure are convex.

Fig. 19 is a front partial cross-sectional schematic view of an internal meshing embodiment in which the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a protrusion and the front-slave coupling structure and the rear-slave coupling structure are grooves.

20 is a partial cross-sectional schematic view of the reverse side of the internal engagement embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a protrusion and the front-slave coupling structure and the rear-slave coupling structure are grooves.

21 is a front partial cross-sectional schematic diagram of an internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning slot and the front-slave coupling structure and the rear-slave coupling structure are positioning keys.

22 is a partial cross-sectional view of the reverse side of the internal meshing embodiment in which the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a positioning slot and the front-slave coupling structure and the rear-slave coupling structure are positioning keys.

FIG. 23 is a front partial cross-sectional schematic diagram of an internal engagement embodiment of the three-ratchet one-way clutch proposed in accordance with the present invention in which the main coupling structure is a positioning key and the front-slave coupling structure and the rear-slave coupling structure are positioning grooves.

24 is a partial cross-sectional schematic view of the reverse side of the internal engagement embodiment of the three-ratchet one-way clutch proposed according to the present invention in which the main coupling structure is a positioning key and the front-slave coupling structure and the rear-slave coupling structure are positioning grooves.

Fig. 25 is an axial schematic diagram of a ratchet tooth shape with concentric arcs in which the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are both concentric arcs.

Figure 26 is an axial schematic diagram of the ratchet shape in which the top arc of the active ratchet tooth is a concentric arc and the top arc of the rear driven ratchet is not a concentric arc according to the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention .

27 is an axial schematic diagram of the ratchet shape in which the top arc of the driving ratchet tooth is not a concentric arc and the top arc of the rear driven ratchet is a concentric arc according to the external meshing embodiment of the three-ratchet one-way clutch proposed in the present invention .

28 is an axial schematic diagram of the ratchet tooth shape in which the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are not concentric arcs.

Fig. 29 is an axial schematic diagram of a ratchet tooth shape with concentric arcs in which the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are both concentric arcs.

FIG. 30 is an axial schematic diagram of the ratchet shape in which the top arc of the driving ratchet tooth is a concentric arc and the top arc of the rear driven ratchet is not a concentric arc of the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention .

31 is an axial schematic diagram of the ratchet tooth shape in which the active ratchet tooth tip arc is not a concentric arc and the rear driven ratchet tooth tip arc is a concentric arc according to the internal meshing embodiment of the three-ratchet one-way clutch proposed by the present invention .

32 is an axial schematic diagram of the ratchet tooth shape in which the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are not concentric arcs.

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.

Explanation of symbols in the figure:

1- Active ratchet; 2- Pawl; 3- Elastic element; 4- Pawl seat; 5- Active ratchet; 6-Pawl; 7- Elastic element; 8- Pawl seat; 12- Front driven ratchet; 15 -Rear driven ratchet; 16-protrusion; 17-locating key; 18-groove; 19-locating groove; 25-ratchet wheel; 42-driven ratchet bearing ring; 43-rolling body; 44-bearing; 46 -Circlip; 52-front driven ratchet; 55-rear driven ratchet; 56-protrusion; 57-positioning key; 58-groove; 59-positioning groove; 65-ratchet wheel; 82-driven ratchet bearing Ring; 83-rolling element; 84-bearing; 86-circlip.

The best mode of the present invention

Figures 5-8 show the internal meshing embodiment of the three-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 front driven ratchet 52, and a rear Driven ratchet 55: the pawl seat 8 is provided with one or more pawls 6; the elastic element 7 is connected with the pawl 6; the number of the elastic elements 7 is one or more.

The driving ratchet 5, the front driven ratchet 52 and the rear driven ratchet 55 are all connected to the pawl seat 8 and can be rotated relative to the pawl seat 8, and all of them can be matched through shaft hole clearance, sliding bearings, rolling bearings or rolling bodies and ratchets. The pawl seat 8 is connected; preferably, the front driven ratchet 52 is located at the front end of the driving ratchet 5, and the rear driven ratchet 55 is located at the rear end of the driving ratchet 5; preferably, the driving ratchet 5 is connected to the pawl seat 8 through a bearing 84, and the front driven ratchet The ratchet wheel 52 and the rear driven ratchet wheel 55 are respectively connected to the pawl seat 8 through rolling elements 83; preferably, a driven ratchet bearing ring 82 is also provided between the rolling body 83 and the pawl seat 8; shaft shoulders and sleeves can be used. Cylinder, nut, shaft end retaining ring, elastic retaining ring, thrust washer, positioning sleeve, adapter sleeve, tightening screw, end cap, threaded ring, circlip, retaining ring, screw, welding, interference fit One or more solutions are used to fix the bearing 84 and the driven ratchet bearing ring 82.

The pawl seat 8 serves as the inner ring or shaft of the one-way clutch, and the driving ratchet 5 serves as the outer ring or shell of the one-way clutch. The driving ratchet 5, the front driven ratchet 52 and the rear driven ratchet 55 are all 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 When the three-ratchet one-way clutch rotates in the locking direction, 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 For the special-shaped spring, an integrally formed elastic element can act on one or more pawls 6. Preferably, an elastic element 7 is connected to each pawl 6.

Preferably, ignoring the error, the tooth tip arc length of the rear driven ratchet 55 is equal to the tooth tip arc length of the front driven ratchet 52, and the tooth pitch of the driving ratchet 5 is smaller than the tooth tip arc length of the driving ratchet 5 and the rear follower The sum of the arc lengths of the tooth tips of the movable ratchet 55.

The driving ratchet 5 is provided with a main coupling structure, the front driven ratchet 52 is provided with a front-slave coupling structure, and the rear driven ratchet 55 is provided with a rear-slave coupling structure; taking the pawl seat 8 as a reference frame, the driving ratchet 5 passes through The main coupling structure and the front-slave coupling structure and the rear-slave coupling structure drive the front driven ratchet 52 and the rear driven ratchet 55 to rotate, and control their relative positions with the front driven ratchet 52 and the rear driven ratchet 55 .

Figures 5 and 7 show the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention. When the three-ratchet one-way clutch rotates in the locked direction, the pawl seat 8 is used as the reference frame, and the active ratchet 5 Rotate first relative to the front driven ratchet 52 and the rear driven ratchet 55. After the tooth grooves of the front driven ratchet 52 and the rear driven ratchet 55 are coincident with the tooth grooves of the driving ratchet 5 in the axial direction, the driving ratchet 5 Drive the front driven ratchet 52 and the rear driven ratchet 55 to rotate. At this time, the pawl 6 can fit into the tooth groove of the driving ratchet 5; the shape of the ratchet teeth of the driving ratchet 5 is the same as that of the front driven ratchet 52 and the rear driven ratchet 55. The shape of the ratchet teeth may be the same or different; preferably, the shape of the tooth top arc in the axial direction of the front driven ratchet 52 and the rear driven ratchet 55 are the same.

Figures 5 and 8 show the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention. When the three-ratchet one-way clutch rotates in the idling direction, the pawl seat 8 is used as the reference frame, and the active ratchet 5 Rotate first relative to the front driven ratchet 52 and the rear driven ratchet 55. After the tooth tops of the front driven ratchet 52 and the rear driven ratchet 55 are complementary to the tooth tops of the driving ratchet 5 in the axial direction, the driving ratchet 5 The front driven ratchet 52 and the rear driven ratchet 55 are driven to rotate. With the driving ratchet 5 as a reference system, the pawl 6 moves on the tooth tops of the front driven ratchet 52 and the rear driven ratchet 55 and the tooth tops of the driving ratchet 5.

Preferably, when the three-ratchet one-way clutch rotates in the idling direction, the pawl seat 8 is used as the reference frame, and the tooth pitch of the driving ratchet 5 is made smaller than the arc length of the tooth tip of the driving ratchet 5 and that of the rear driven ratchet 55. The sum of the tooth tip arc lengths can make the tooth tip arc of the driving ratchet 5 and the tooth tip arcs of the front driven ratchet 52 and/or the rear driven ratchet 55 overlap and/or intersect in the axial direction. Take the driving ratchet 5 as With reference to the frame of reference, the pawl 6 is made to reach the tooth top of the front driven ratchet 52 and/or the rear driven ratchet 55 before leaving the end of the tooth top of the driving ratchet 5.

Embodiments of the present invention

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

Figures 1-4 show the external meshing embodiment of the three-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, a front driven ratchet 12, and a rear Driven ratchet wheel 15: one or more pawls 2 are provided on the pawl seat 4; the elastic element 3 is connected with the pawl 2; the number of the elastic elements 3 is one or more.

The driving ratchet 1, the front driven ratchet 12 and the rear driven ratchet 15 are all connected to the pawl seat 4, and can be rotated relative to the pawl seat 4, and can be matched through the shaft hole clearance, sliding bearing, rolling bearing or rolling body and ratchet The pawl holder 4 is connected; preferably, the front driven ratchet 12 is located at the front end of the driving ratchet 1, and the rear driven ratchet 15 is located at the rear end of the driving ratchet 1; preferably, the driving ratchet 1 is connected to the pawl holder 4 through a bearing 44, and the front driven ratchet The ratchet wheel 12 and the rear driven ratchet wheel 15 are respectively connected to the pawl base 4 through rolling elements 43; preferably, a driven ratchet bearing ring 42 is also provided between the rolling elements 43 and the pawl base 4; shaft shoulders and sleeves can be used. Cylinder, nut, shaft end retaining ring, elastic retaining ring, thrust washer, positioning sleeve, adapter sleeve, tightening screw, end cap, threaded ring, circlip, retaining ring, screw, welding, interference fit One or more solutions are used to fix the bearing 44 and the driven ratchet bearing ring 42.

The pawl seat 4 is used as the outer ring or shell of the one-way clutch, the driving ratchet 1 is used as the inner ring or shaft of the one-way clutch, the driving ratchet 1, the front driven ratchet 12 and the rear driven ratchet 15 are all external tooth 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, the pawl 2 on the side of the front driven ratchet 12, and the pawl 2 on the side of the rear driven ratchet 15 Position; the elastic element 3 is a part or component that uses the elastic properties of the material to ensure that the pawl 2 engages with the active ratchet 1 when the three-ratchet one-way clutch rotates in the locking direction. It can use coil springs, leaf springs, coil springs, pressure For a spring tube, a bellows, a diaphragm spring, a wire spring or a special-shaped spring, an integrally formed elastic element can act on one or more pawls 2. Preferably, each pawl 2 is connected with an elastic element 3.

Preferably, ignoring the error, the tooth tip arc length of the rear driven ratchet 15 is equal to the tooth tip arc length of the front driven ratchet 12, and the tooth pitch of the driving ratchet 1 is smaller than the tooth tip arc length of the driving ratchet 1 and the rear follower. The sum of the arc lengths of the tooth tips of the movable ratchet 15.

The driving ratchet 1 is provided with a main coupling structure, the front driven ratchet 12 is provided with a front-slave coupling structure, and the rear driven ratchet 15 is provided with a rear-slave coupling structure; taking the pawl seat 4 as a reference frame, the driving ratchet 1 passes through The main coupling structure and the front-slave coupling structure and the rear-slave coupling structure drive the front driven ratchet 12 and the rear driven ratchet 15 to rotate, and control their relative positions with the front driven ratchet 12 and the rear driven ratchet 15 .

Figures 1 and 3 show the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention. When the three-ratchet one-way clutch rotates in the locked direction, the pawl base 4 is used as the reference system, and the active ratchet 1 Rotate relative to the front driven ratchet 12 and the rear driven ratchet 15 first, and after the tooth grooves of the front driven ratchet 12 and the rear driven ratchet 15 are coincident with the tooth grooves of the driving ratchet 1 in the axial direction, the driving ratchet 1 Drive the front driven ratchet 12 and the rear driven ratchet 15 to rotate. At this time, the pawl 2 can fit into the tooth groove of the driving ratchet 1; the ratchet shape of the driving ratchet 1 is the same as that of the front driven ratchet 12 and the rear driven ratchet 15 The shape of the ratchet teeth may be the same or different; preferably, the shape of the tooth tip arc in the axial direction of the front driven ratchet 12 and the rear driven ratchet 15 are the same.

Figures 1 and 4 show the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention. When the three-ratchet one-way clutch rotates in an idling direction, the pawl seat 4 is used as the reference system, and the active ratchet 1 Rotate relative to the front driven ratchet 12 and the rear driven ratchet 15 first, and after the tooth tops of the front driven ratchet 12 and the rear driven ratchet 15 are complementary to the tooth tops of the driving ratchet 1 in the axial direction, the driving ratchet 1 The front driven ratchet 12 and the rear driven ratchet 15 are driven to rotate. Using the driving ratchet 1 as a reference system, the pawl 2 moves on the tooth tops of the front driven ratchet 12 and the rear driven ratchet 15 and the tooth tops of the driving ratchet 1.

Preferably, when the three-ratchet one-way clutch rotates in the idling direction, the tooth pitch of the driving ratchet 1 is made smaller than the sum of the tooth tip arc length of the driving ratchet 1 and the tooth tip arc length of the rear driven ratchet 15 to achieve The pawl seat 4 is the reference frame, which can make the tooth top arc of the driving ratchet 1 and the tooth top arcs of the front driven ratchet 12 and/or the rear driven ratchet 15 overlap and/or intersect in the axial direction. Take the driving ratchet 1 as With reference to the frame of reference, the pawl 2 is made to reach the tooth top of the front driven ratchet 12 and/or the rear driven ratchet 15 before leaving the end of the tooth top of the driving ratchet 1.

The driving ratchet 5, the front driven ratchet 52 and the rear driven ratchet 55 are all connected to the pawl seat 8 and can be rotated relative to the pawl seat 8, and all of them can be matched through shaft hole clearance, sliding bearings, rolling bearings or rolling bodies and ratchets. The pawl base 8 is connected; preferably, the front driven ratchet 52 is located at the front end of the driving ratchet 5, and the rear driven ratchet 55 is located at the rear end of the driving ratchet 5; preferably, the driving ratchet 5 is connected to the pawl base 8 through a bearing 84, and the front driven ratchet The ratchet wheel 52 and the rear driven ratchet wheel 55 are respectively connected to the pawl seat 8 through rolling elements 83; preferably, a driven ratchet bearing ring 82 is also provided between the rolling body 83 and the pawl seat 8; shaft shoulders and sleeves can be used. Cylinder, nut, shaft end retaining ring, elastic retaining ring, thrust washer, positioning sleeve, adapter sleeve, tightening screw, end cap, threaded ring, circlip, retaining ring, screw, welding, interference fit One or more solutions are used to fix the bearing 84 and the driven ratchet bearing ring 82.

As shown in Figures 9-10, according to the present invention, the main coupling structure of the three-ratchet one-way clutch is a groove and the front-slave coupling structure and the rear-slave coupling structure are convex outer meshing embodiments. The main coupling structure is The groove 18 is provided with one or more grooves 18 on the driving ratchet 1, the front slave coupling structure is a protrusion 16, the rear slave coupling structure is a protrusion 16, the front driven ratchet 12 and the rear driven ratchet 15 is provided with one or more protrusions 16, and the driving ratchet 1 controls its relative position to the front driven ratchet 12 and the rear driven ratchet 15 through the protrusions 16 and grooves 18, and drives the front driven ratchet 12 and the rear The driven ratchet 15 rotates.

As shown in Figures 11-12, according to the present invention, the main coupling structure of the three-ratchet one-way clutch is convex and the front-slave coupling structure and the rear-slave coupling structure are grooves. The main coupling structure is Protrusions 16, one or more protrusions 16 are provided on the driving ratchet 1, the front slave coupling structure is a groove 18, the rear slave coupling structure is a groove 18, the front driven ratchet 12 and the rear driven ratchet 15 is provided with one or more grooves 18, the driving ratchet 1 through the protrusions 16 and grooves 18 to control its relative position with the front driven ratchet 12 and the rear driven ratchet 15, and drive the front driven ratchet 12 and the rear The driven ratchet 15 rotates.

As shown in Figs. 13-14, the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is an outer meshing embodiment in which the front-slave coupling structure and the rear-slave coupling structure are positioning keys, and the main coupling structure is Positioning groove 19, one or more positioning grooves 19 are provided on the driving ratchet wheel 1, the front slave coupling structure is a positioning key 17, the rear slave coupling structure is a positioning key 17, the front driven ratchet 12 and the rear driven ratchet 15 is provided with one or more positioning keys 17, the active ratchet 1 controls its relative position with the front driven ratchet 12 and the rear driven ratchet 15 through the positioning keys 17 and the positioning groove 19, and drives the front driven ratchet 12 and the rear The driven ratchet 15 rotates.

As shown in Figs. 15-16, the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a positioning key, and the front-slave coupling structure and the rear-slave coupling structure are the outer meshing embodiments of the positioning groove. The main coupling structure is Positioning key 17, one or more positioning keys 17 are provided on the driving ratchet wheel 1, the front slave coupling structure is a positioning slot 19, the rear slave coupling structure is a positioning slot 19, the front driven ratchet 12 and the rear driven ratchet 15 is provided with one or more positioning grooves 19, and the driving ratchet 1 controls its relative position with the front driven ratchet 12 and the rear driven ratchet 15 through the positioning key 17 and the positioning groove 19, and drives the front driven ratchet 12 and the rear The driven ratchet 15 rotates.

As shown in Figures 1 and 9-16, it is easy to draw that one or more of the protrusion 16, the groove 18, the positioning key 17, and the positioning groove 19 can be provided on the active ratchet wheel 1 at the same time. The ratchet wheel 12 may be provided with one or more of the protrusion 16, the groove 18, the positioning key 17, and the positioning groove 19 at the same time, and the rear driven ratchet 15 may be provided with the protrusion 16, the groove 18, and the positioning at the same time. One or more of the key 17, the positioning groove 19; taking the pawl seat 4 as the reference system, pass one or more of the protrusion 16, the groove 18, the positioning key 17, and the positioning groove 19 in the active ratchet 1 Various structures control its relative position with the front driven ratchet 12 and/or the rear driven ratchet 15 and drive the front driven ratchet 12 and/or the rear driven ratchet 15 to rotate.

As shown in Figures 17-18, according to the present invention, the main coupling structure of the three-ratchet one-way clutch is a groove and the front-slave coupling structure and the rear-slave coupling structure are convex inner meshing embodiments. The main coupling structure is The groove 58, the driving ratchet 5 is provided with one or more grooves 58, the front slave coupling structure is a protrusion 56, the rear slave coupling structure is a protrusion 56, the front driven ratchet 52 and the rear driven ratchet One or more protrusions 56 are provided on 55. The driving ratchet 5 controls its relative position to the front driven ratchet 52 and the rear driven ratchet 55 through the protrusions 56 and grooves 58, and drives the front driven ratchet 52 and the rear The driven ratchet 55 rotates.

As shown in Figs. 19-20, the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a convex and the front-slave coupling structure and the back-slave coupling structure are grooves. The main coupling structure is One or more protrusions 56 are provided on the driving ratchet 5, the front slave coupling structure is a groove 58, the rear slave coupling structure is a groove 58, the front driven ratchet 52 and the rear driven ratchet One or more grooves 58 are provided on 55, and the driving ratchet 5 controls its relative position with the front driven ratchet 52 and the rear driven ratchet 55 through the protrusions 56 and grooves 58, and drives the front driven ratchet 52 and the rear The driven ratchet 55 rotates.

As shown in Figures 21-22, the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is an internal meshing embodiment in which the front-slave coupling structure and the back-slave coupling structure are positioning keys, and the main coupling structure is Positioning groove 59, one or more positioning grooves 59 are provided on the driving ratchet 5, the front-slave coupling structure is a positioning key 57, the rear-slave coupling structure is a positioning key 57, the front driven ratchet 52 and the rear driven ratchet One or more positioning keys 57 are provided on 55. The driving ratchet 5 controls its relative position to the front driven ratchet 52 and the rear driven ratchet 55 through the positioning keys 57 and the positioning groove 59, and drives the front driven ratchet 52 and the rear The driven ratchet 55 rotates.

As shown in Figures 23-24, the main coupling structure of the three-ratchet one-way clutch proposed according to the present invention is a positioning key, and the front-slave coupling structure and the rear-slave coupling structure are internally engaging embodiments of the positioning groove. The main coupling structure is Positioning key 57, one or more positioning keys 57 are provided on the driving ratchet 5, the front slave coupling structure is a positioning slot 59, the rear slave coupling structure is a positioning slot 59, the front driven ratchet 52 and the rear driven ratchet One or more positioning grooves 59 are provided on 55. The driving ratchet 5 controls its relative position with the front driven ratchet 52 and the rear driven ratchet 55 through the positioning key 57 and the positioning groove 59, and drives the front driven ratchet 52 and the rear The driven ratchet 55 rotates.

As shown in Figure 5 and Figures 17-24, it is easy to draw that one or more of the protrusion 56, the groove 58, the positioning key 57, the positioning groove 59 can be provided on the active ratchet wheel 5 at the same time. The ratchet wheel 52 may be provided with one or more of the protrusion 56, the groove 58, the positioning key 57, and the positioning groove 59 at the same time. The rear driven ratchet 55 may be provided with the protrusion 56, the groove 58, and the positioning at the same time. One or more of the key 57 and the positioning groove 59; taking the pawl seat 8 as the reference system, pass one or more of the protrusion 56, the groove 58, the positioning key 57, and the positioning groove 59 in the active ratchet 5 Various structures control its relative position with the front driven ratchet 52 and/or the rear driven ratchet 55 and drive the front driven ratchet 52 and/or the rear driven ratchet 55 to rotate.

As shown in Figure 1, Figure 25, the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are both concentric circular arcs in the axial direction. Tooth shape, the tooth tip arcs of the driving ratchet 1 and the rear 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 rear driven ratchet 15 are provided with transition fillets and/ Or transition chamfer; 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 rear driven ratchet 15, when the three-ratchet one-way clutch rotates in the idling direction, The pawl seat 4 is the reference frame. After the tooth top of the rear driven ratchet 15 and the tooth top of the driving ratchet 1 are complementary in the axial direction, the tooth top arc of the driving ratchet 1 and the tooth top arc of the rear driven ratchet 15 are on the axis. Some overlap upwards.

Figures 1 and 26 show that the top arc of the driving ratchet tooth is a concentric arc in the axial direction, and the top arc of the rear driven ratchet tooth is in the axial direction according to the external meshing embodiment of the three-ratchet one-way clutch proposed by the present invention. The upper part is not a ratchet shape with concentric arcs. The tooth top arc of the driving ratchet 1 is a concentric arc in the axial direction, and the tooth top arc of the rear driven ratchet 15 is not a concentric arc 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; 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 rear driven ratchet 15, the When the three-ratchet one-way clutch rotates in the idling direction, with the pawl seat 4 as the reference system, the tooth top arc of the driving ratchet 1 and the tooth top arc of the rear driven ratchet 15 have an intersection in the axial direction. Preferably, there is Intersection point a and intersection point b.

As shown in Figure 1, Figure 27, according to the external engagement embodiment of the three-ratchet one-way clutch proposed by the present invention, the top arc of the active ratchet tooth is not concentric arcs in the axial direction, and the top arc of the rear driven ratchet tooth is on the axis. Upward is the shape of a ratchet tooth 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, and the back follower The tooth tip arc of the ratchet 15 is a concentric arc in the axial direction; since 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 rear driven ratchet 15, the three ratchets When the one-way clutch rotates in the idling direction, with the pawl seat 4 as the reference frame, the tooth tip arc of the driving ratchet 1 and the tooth tip arc of the rear driven ratchet 15 have an intersection point in the axial direction, preferably, there is an intersection point a And intersection b.

Figures 1 and 28 show that the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the external meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are not concentric arcs in the axial direction. The shape of ratchet teeth. 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 rear driven ratchet 15 is on the axis. The upward is not a concentric arc, the tooth tip arc of the rear driven ratchet 15 can be a curve or a combination of a curve and a straight line; because the tooth spacing of the driving ratchet 1 is smaller than the tooth tip arc length of the rear driving ratchet 1 and the rear driven ratchet The sum of the tooth tip arc lengths of 15, when the three-ratchet one-way clutch rotates in the idling direction, with the pawl seat 4 as the reference frame, the tooth tip arc of the driving ratchet 1 and the tooth tip arc of the rear driven ratchet 15 There is an intersection point in the axial direction, preferably, there is an intersection point a and an intersection point b.

Figures 5 and 29 show that the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are both concentric circular arcs in the axial direction. Tooth shape, the tooth tip arcs of the driving ratchet 5 and the rear 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 rear driven ratchet 55 are provided with transition fillets and/ Or transition chamfer; because the tooth spacing 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 rear driven ratchet 55, when the three-ratchet one-way clutch rotates in the idling direction, The pawl seat 8 is the reference frame. After the tooth top of the rear driven ratchet 55 and the tooth top of the driving ratchet 5 are complementary in the axial direction, the tooth top arc of the driving ratchet 5 and the tooth top arc of the rear driven ratchet 55 are on the axis. Some overlap upwards.

Figures 5 and 30 show the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention. The top arc of the active ratchet tooth is concentric in the axial direction, and the top arc of the rear driven ratchet tooth is in the axial direction. The upper part is not a ratchet shape with concentric arcs. The tooth top arc of the driving ratchet 5 is a concentric arc in the axial direction, and the tooth top arc of the rear driven ratchet 55 is not a concentric arc in the axial direction. The tooth tip arc of the driven ratchet 55 can be a curve or a combination of a curve and a straight line; since 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 rear driven ratchet 55, the When the three-ratchet one-way clutch rotates in the idling direction, with the pawl seat 8 as the reference system, the tooth top arc of the driving ratchet 5 and the tooth top arc of the rear driven ratchet 55 have an intersection point in the axial direction. Preferably, there is Intersection point c and intersection point d.

Figures 5 and 31 show the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention. The top arc of the active ratchet tooth is not concentric arcs in the axial direction, and the top arc of the rear driven ratchet tooth is on the axis. Upward is the shape of a ratchet tooth with concentric arcs. 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. The tooth tip arc of the ratchet 55 is a concentric arc in the axial direction; since 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 rear driven ratchet 55, the three ratchets When the one-way clutch rotates in the idling direction, with the pawl seat 8 as the reference frame, the tooth top arc of the driving ratchet 5 and the tooth top arc of the rear driven ratchet 55 have an intersection point in the axial direction, preferably, there is an intersection point c And intersection point d.

Figures 5 and 32 show that the driving ratchet tooth tip arc and the rear driven ratchet tooth tip arc of the internal meshing embodiment of the three-ratchet one-way clutch proposed according to the present invention are not concentric arcs in the axial direction. The shape of ratchet teeth. The tooth top arc of the driving ratchet 5 is not concentric arcs 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. The tooth top arc of the rear driven ratchet 55 is on the axis. The upward is not a concentric arc, the tooth tip arc of the rear driven ratchet 55 can be a curve or a combination of a curve and a straight line; because the tooth spacing of the driving ratchet 5 is smaller than the tooth tip arc length of the rear driving ratchet 1 and the rear driven ratchet The sum of the tooth tip arc lengths of 55. When the three-ratchet one-way clutch rotates in the idling direction, with the pawl seat 8 as the reference frame, the tooth tip arc of the driving ratchet 5 and the tooth tip arc of the rear driven ratchet 55 There are intersection points in the axial direction, preferably, there are intersection points c and intersection points d.

The implementation of the pawl 2 of the outer meshing embodiment shown in Figures 2 and 33 can be that one or both of the pawl 2 is not provided with a pawl wheel 25 and the pawl 2 is provided with a pawl wheel 25 Kind of way.

As shown in Figure 33, the pawl of the outer meshing embodiment of the present invention is provided with a pawl wheel: the pawl 2 is provided with a pawl wheel 25; when the three-ratchet one-way clutch rotates in an idling direction , With the driving ratchet 1 as the reference system, the pawl 2 moves on the tooth tops of the front driven ratchet 12 and the rear driven ratchet 15 and the tooth tops of the driving ratchet 1 through the ratchet wheel 25.

The implementation of the pawl 6 of the internal meshing embodiment shown in Figures 6 and 34 may be that the pawl 6 is not provided with a pawl wheel 65 and the pawl 6 is provided with one or both of the pawl wheels 65. Kind of way.

As shown in Figure 34, the pawl of the internal meshing embodiment of the present invention is provided with a pawl wheel: the pawl 6 is provided with a pawl wheel 65; when the three-ratchet one-way clutch rotates in an idling direction Taking the driving ratchet 5 as the reference system, the pawl 6 moves on the tooth tops of the front driven ratchet 52 and the rear driven ratchet 55 and the tooth tops of the driving ratchet 5 through the ratchet wheel 65.

Industrial applicability

The three-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, when the three-ratchet one-way clutch rotates in the idling direction, the contact surface of the pawl and the driving ratchet, and the contact surface of the pawl and the driven ratchet are worn out Uniformity and long service life.

Claims

A three-ratchet one-way clutch, comprising a driving ratchet, a pawl, an elastic element, a pawl seat, a front driven ratchet, and a rear driven ratchet, characterized in that:

　　The pawl seat is provided with one or more pawls;

"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 can rotate relative to the pawl seat;

　　The front driven ratchet is connected to the pawl seat, and the front driven ratchet can rotate relative to the pawl seat;

"The rear driven ratchet is connected with the pawl seat, and the rear driven ratchet is rotatable relative to the pawl seat;

The driving ratchet is provided with a main coupling structure, the front driven ratchet is provided with a front-slave coupling structure, and the rear driven ratchet is provided with a rear-slave coupling structure; taking the pawl seat as a frame of reference, The driving ratchet drives the front driven ratchet and the rear driven ratchet to rotate through the main coupling structure, the front-slave coupling structure and the rear-slave coupling structure, and controls the rotation of the front driven ratchet and the rear driven ratchet. The relative position of the rear driven ratchet;

When the three-ratchet one-way clutch rotates in an idling direction, the driving ratchet is used as a reference frame, and the pawl is positioned between the tooth tops of the front driven ratchet and the rear driven ratchet and the driving ratchet. Movement on the top of the tooth.
The three-ratchet one-way clutch according to claim 1, wherein the tooth pitch of the driving ratchet is smaller than the sum of the tooth tip arc length of the driving ratchet and the tooth tip arc length of the rear driven ratchet. When the three-ratchet one-way clutch rotates in an idling direction, the active ratchet is used as a reference frame, and the pawl reaches the front driven ratchet and/or before leaving the end of the tooth tip of the active ratchet. For the tooth top of the rear driven ratchet, the pawl reaches the tooth top of the driving ratchet before leaving the end of the tooth top of the front driven ratchet and/or the rear driven ratchet.
The three-ratchet one-way clutch according to claim 2, wherein the tooth tip arcs of the driving ratchet, the front driven ratchet and the rear driven ratchet are concentric arcs in the axial direction , Both ends of the tooth tip arcs of the driving ratchet, the front driven ratchet and the rear driven ratchet are provided with transition fillets and/or transition chamfers.
The three-ratchet one-way clutch according to claim 2, characterized in that the tooth tip arcs of the driving ratchet and/or the front driven ratchet and/or the rear driven ratchet are not in the axial direction. Concentric arcs; when the three-ratchet one-way clutch rotates in the idling direction, the pawl seat is used as the reference frame, and the tooth tops of the front driven ratchet and the rear driven ratchet are in line with the After the tooth tips of the driving ratchet wheel are complementary in the axial direction, the tooth tip arcs of the driving ratchet wheel and the tooth tip arcs of the front driven ratchet wheel and/or the rear driven ratchet wheel intersect in the axial direction.
The three-ratchet one-way clutch according to any one of claims 1 to 4, characterized in that the realization form of the main coupling structure and/or the front-slave coupling structure and/or the rear-slave coupling structure One or more structures among protrusions, grooves, positioning keys, and positioning grooves.
The three-ratchet one-way clutch according to any one of claims 1 to 4, wherein the active ratchet is connected with the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling element; The front driven ratchet is connected to the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling element; the rear driven ratchet is connected to the pawl through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling element座连接。 Block connection.
The three-ratchet one-way clutch according to any one of claims 1 to 4, wherein the pawl is provided with a pawl wheel; when the three-ratchet one-way clutch rotates in an idling direction, The driving ratchet is a frame of reference, and the pawl moves on the tooth tops of the driving ratchet, the front driven ratchet and the rear driven ratchet through the pawl wheel.
The three-ratchet one-way clutch according to any one of claims 1 to 4, wherein the elastic element uses the elastic properties of the material to ensure that the three-ratchet one-way clutch rotates in the locking direction. For the parts or components of the pawl meshing with the active ratchet, one elastic element can act on one or more pawls.
The three-ratchet one-way clutch according to claim 5, characterized in that the driving ratchet is connected with the pawl seat through a shaft hole clearance fit, sliding bearing, rolling bearing or rolling element; the front driven ratchet The rear driven ratchet is connected to the pawl seat through a clearance fit of a shaft hole, a sliding bearing, a rolling bearing or a rolling body; the rear driven ratchet is connected to the pawl seat through a clearance fit of a shaft hole, a sliding bearing, a rolling bearing or a rolling body.