Clutch with magnetic cam and magnetic coupling

Abstract

The invention provides a clutch with a magnetic cam and a magnetic coupling, which are mainly used in the technical field of transmission. The clutch with the magnetic cam at least comprises the magnetic cam, a driving half clutch, a driven half clutch and a joint piece. The magnetic cam interacts with the driven half clutch or the driving half clutch through magnetic force. When the driven half clutch or the driving half clutch rotates relative to the magnetic cam, the magnetic cam can rotate relative to the driving half clutch or the driven half clutch under the action of magnetic force. The magnetic cam is connected with the joint piece, and under the action of the magnetic cam, the driving half clutch and the driven half clutch can be selectively engaged and disengaged through the joint piece. Compared with the prior art, in the separated state, the clutch provided with the magnetic cam can reduce mechanical friction and has certain rotation angle tolerance, and the coupler can selectively achieve the locking function by applying the clutch.

Description

Technical Field

[0001] The present invention relates to a clutch provided with a magnetic cam and a magnetic coupling, which are mainly used in the field of transmission technology. Background Art

[0002] Clutches are widely used in various transmission systems as clutch devices. Prior art applications include Chinese invention patent application number 2010102933113, entitled "Bearing-Type Overrunning Clutch Structure" (CN201010293311, hereinafter referred to as Patent 1), which discloses an overrunning clutch without a return spring. Rollers are positioned within grooves in the inner ring, and the centrifugal force of the rollers creates contact with the outer ring, thereby achieving the overrunning clutch function. When the clutch is disengaged, when the inner ring rotates at a high speed relative to the outer ring, the centrifugal force exerted on the rollers creates continuous mechanical friction with the outer ring. In the technical solution actually disclosed in Patent 1, this mechanical friction not only causes premature clutch failure but also continuously generates wear debris. Furthermore, as the inner ring rotates at a higher speed relative to the outer ring, the centrifugal force exerted on the rollers increases, increasing the mechanical friction between the rollers and the outer ring and generating a large amount of wear debris.

[0003] Furthermore, in the prior art, a Chinese invention patent with application number 2016110749256 and subject name “Double Ratchet One-Way Clutch” (CN201611074925, hereinafter referred to as Patent 2) discloses a double ratchet one-way clutch. In the clutch disengaged state, the mechanical friction of the pawl drives the driven ratchet to rotate a certain angle relative to the active ratchet, so that the top of the active ratchet tooth and the top of the driven ratchet tooth are axially “spliced” into a cylindrical surface, and the pawl contacts the “spliced” cylindrical surface, thereby reducing the operating noise of the ratchet clutch in the disengaged state. The tooth profiles of the active ratchet and the driven ratchet are in an "overlapping" state in the initial stage. In order to effectively ensure that the driven ratchet rotates smoothly under the "push" action of the mechanical friction of the pawl, the technical solution must ensure that the pawl is in frictional contact with the tooth tops of the active ratchet and the tooth tops of the driven ratchet at the same time (both simultaneous contact and a certain amount of pressure on the tooth tops of both ratchet wheels are required, otherwise sufficient mechanical friction will not be generated to "push" the driven ratchet). However, under normal circumstances, the pawl is relatively rigid. If the pawl is to ensure simultaneous contact with both ratchet wheels, the pawl return spring must be set with a large elastic force. This not only increases the mechanical friction between the pawl and the two ratchets, but also generates a large amount of wear debris when the relative speed between the pawl and the ratchet wheels is high.

[0004] Furthermore, in the prior art, Chinese invention patent application number 2024115737404, titled "Ratchet Clutch with Friction Cam" (CN202411573740, hereinafter referred to as Patent 3), discloses a ratchet clutch with a friction cam, which utilizes the mechanical friction of the ratchet on the friction cam to selectively drive the friction cam to rotate. When the friction cam is mounted on the pawl seat, the pawl and ratchet wheel can selectively disengage under the action of the friction cam and the pawl return spring; when the friction cam is mounted on the ratchet wheel, the pawl and ratchet wheel can selectively engage and disengage under the action of the friction cam and the pawl return spring. Compared to Patent 2, this technical solution reliably ensures the rotation of the friction cam through mechanical friction when the clutch is disengaged, thereby reliably disengaging the pawl and ratchet wheel. Furthermore, compared to Patent 2, because the ratchet wheel does not need to be reliably "moved" by mechanical friction of the pawl, the pawl return spring has a smaller elastic force, and the mechanical friction effect of the pawl contacting the ratchet wheel under the action of the return spring is also relatively small. However, in the technical solution actually disclosed in Patent 3, because the friction cam and the ratchet wheel are always in a state of mechanical friction, the continuous generation of wear debris is inevitable. Furthermore, when the clutch is in the disengaged state and the speed is high, the mechanical wear of the friction pair is intensified, and a large amount of wear debris is generated.

[0005] The wear debris generated by this mechanical friction not only mixes into various friction interfaces and acts as "abrasive particles," disrupting the integrity of the lubricating oil film, exacerbating direct contact and wear between friction pairs, and reducing transmission efficiency, but also sharp metal wear debris can scratch the surfaces of key components such as gears and bearings, reducing fitting accuracy, causing stress concentration, accelerating fatigue crack growth, and even premature failure. Therefore, reducing mechanical friction has become a pressing technical issue in the field of clutch technology. Summary of the Invention

[0006] To reduce mechanical friction in a clutch or brake disengaged state, the present invention provides a clutch equipped with a magnetic cam. The clutch equipped with a magnetic cam is used to connect two components of a machine, device, transmission system, or mechanism, or to selectively engage or disengage a connected moving part, or to selectively engage or disengage a connected moving part.

[0007] The present invention is achieved through the following solutions:

[0008] The clutch with a magnetic cam includes a magnetic cam, an active half-clutch, a passive half-clutch, and a coupling member. The magnetic cam interacts with the passive half-clutch or the active half-clutch via magnetic force. When the magnetic cam interacts with the passive half-clutch via magnetic force and the passive half-clutch rotates relative to the magnetic cam, the magnetic cam rotates relative to the active half-clutch under the action of the magnetic force. When the magnetic cam interacts with the active half-clutch via magnetic force and the active half-clutch rotates relative to the magnetic cam, the magnetic cam rotates relative to the passive half-clutch under the action of the magnetic force. The magnetic cam is connected to the coupling member. Under the action of the magnetic cam, the active half-clutch and the passive half-clutch are selectively engaged and disengaged via the coupling member. In the disengaged state, the clutch with a magnetic cam has a certain rotational angle tolerance. The active half-clutch and the passive half-clutch are each connected to external components (external components are components other than "components of the clutch with a magnetic cam").

[0009] Furthermore, the clutch equipped with a magnetic cam further includes a return spring. The active semi-clutch includes a pawl seat, the passive semi-clutch includes a ratchet, and the engaging member includes a pawl. The magnetic cam is disposed on the pawl seat, or the magnetic cam is disposed on the ratchet. The magnetic cam interacts with the ratchet or the pawl seat via magnetic force. When the magnetic cam is disposed on the pawl seat, when the magnetic cam interacts with the ratchet via magnetic force, and when the ratchet rotates relative to the magnetic cam, the magnetic force causes the magnetic cam to rotate relative to the pawl seat within a certain angular range. When the magnetic cam is disposed on the ratchet, when the magnetic cam interacts with the pawl seat via magnetic force, and when the ratchet seat rotates relative to the magnetic cam, the magnetic force causes the magnetic cam to rotate relative to the ratchet within a certain angular range. The return spring is connected to the pawl. When the magnetic cam is disposed on the pawl seat, the pawl is disposed on the pawl seat, the magnetic cam is connected to the pawl, and the pawl is rotatable relative to the pawl seat within a certain angle range; or the pawl is disposed on the magnetic cam, the pawl seat is connected to the pawl, and the pawl is rotatable relative to the magnetic cam within a certain angle range. When the magnetic cam is disposed on the ratchet wheel, the pawl is disposed on the pawl seat, the magnetic cam is connected to the pawl, and the pawl is rotatable relative to the pawl seat within a certain angle range. Under the action of the magnetic cam, the return spring, and the pawl, the pawl seat and the ratchet wheel are selectively engaged or disengaged. The pawl seat and the ratchet wheel are respectively connected to the external components.

[0010] Alternatively, the clutch with a magnetic cam further includes a first return spring 3. The active semi-clutch includes a first pawl seat 4, the passive semi-clutch includes a first friction wheel 8, the engaging member includes a first pawl 1, and the magnetic cam includes a first magnetic cam 5. The first magnetic cam 5 is mounted on the first pawl seat 4 and interacts with the first friction wheel 8 through magnetic force. When the first friction wheel 8 rotates relative to the first magnetic cam 5, the magnetic force causes the first magnetic cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. The first return spring 3 is connected to the first pawl 1. The first pawl 1 is mounted on the first pawl seat 4 and connected to the first pawl 1, allowing the first pawl 1 to rotate relative to the first pawl seat 4 within a certain angular range. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the first defined angular position, the first pawl seat 4 selectively engages with the first friction wheel 8 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl seat 4, the first pawl seat 4 and the first friction wheel 8 are separated due to the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl seat 4, the first magnetic cam 5, the first return spring 3, and the first pawl 1 provide the clutch with a magnetic cam with a certain rotational angle tolerance. The first friction wheel 8 and the first pawl seat 4 are each connected to the external components.

[0011] Alternatively, the clutch with a magnetic cam further includes a first return spring 3. The active semi-clutch includes a first pawl seat 4, the passive semi-clutch includes a first friction wheel 8, the engaging member includes a first pawl 1, and the magnetic cam includes a first magnetic cam 5. The first magnetic cam 5 is mounted on the first pawl seat 4 and interacts with the first friction wheel 8 through magnetic force. When the first friction wheel 8 rotates relative to the first magnetic cam 5, the magnetic force causes the first magnetic cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. The first return spring 3 is connected to the first pawl 1. The first pawl 1 is mounted on the first magnetic cam 5, and the first pawl seat 4 is connected to the first pawl 1. The first pawl 1 is rotated relative to the first magnetic cam 5 within a certain angular range. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the first defined angular position, the first pawl seat 4 selectively engages with the first friction wheel 8 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl seat 4, the first pawl seat 4 and the first friction wheel 8 are separated due to the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl seat 4, the first magnetic cam 5, the first return spring 3, and the first pawl 1 provide the clutch with a magnetic cam with a certain rotational angle tolerance. The first friction wheel 8 and the first pawl seat 4 are each connected to the external components.

[0012] Alternatively, the clutch provided with a magnetic cam further includes a first return spring 3 and a first pawl holder 6. The active semi-clutch includes a second ratchet, the passive semi-clutch includes a first ratchet 2, the engaging member includes a first pawl 1, and the magnetic cam includes a first magnetic cam 5. The first pawl holder 6 is connected to the first ratchet 2 via a shaft hole clearance fit or a bearing, and the first pawl holder 6 is rotatable relative to the first ratchet 2, or the first pawl holder 6 is connected to the second ratchet via a shaft hole clearance fit or a bearing, and the first pawl holder 6 is rotatable relative to the second ratchet. The first magnetic cam 5 is rotatably disposed on the first pawl holder 6 via a shaft hole clearance fit, or the first magnetic cam 5 is rotatably disposed on the first pawl holder 6 via a bearing. The first magnetic cam 5 interacts with the second ratchet wheel through magnetic force, and the first pawl holder 6 interacts with the first ratchet wheel 2 through magnetic force, or the first magnetic cam 5 interacts with the first ratchet wheel 2 through magnetic force, and the first pawl holder 6 interacts with the second ratchet wheel through magnetic force. When the first ratchet wheel 2 rotates relative to the second ratchet wheel, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first pawl holder 6 between a first limited angle and a second limited angle. The first return spring 3 is connected to the first pawl 1. The first pawl 1 is disposed on the first pawl holder 6, and the first magnetic cam 5 is connected to the first pawl 1, so that the first pawl 1 can rotate relative to the first pawl holder 6 within a certain angle range. When the first magnetic cam 5 rotates relative to the first pawl holder 6 to the first limited angle position, the second ratchet wheel selectively engages with the first ratchet wheel 2 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second limited angular position relative to the first pawl holder 6, the second ratchet wheel is separated from the first ratchet wheel 2 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second limited angular position relative to the first pawl holder 6, the clutch with the magnetic cam has a certain rotational angle tolerance under the action of the first pawl holder 6, the first magnetic cam 5, the first return spring 3, and the first pawl 1. The first ratchet wheel 2 and the second ratchet wheel are respectively connected to the external components.

[0013] Alternatively, the clutch with a magnetic cam further includes a first return spring 3 and a first pawl holder 6. The active semi-clutch includes a second friction wheel 9, the passive semi-clutch includes a first friction wheel 8, the engaging member includes a first pawl 1, and the magnetic cam includes a first magnetic cam 5. The first pawl holder 6 is connected to the first friction wheel 8 via a shaft-hole clearance fit or a bearing, and the first pawl holder 6 is rotatable relative to the first friction wheel 8, or the first pawl holder 6 is connected to the second friction wheel 9 via a shaft-hole clearance fit or a bearing, and the first pawl holder 6 is rotatable relative to the second friction wheel 9. The first magnetic cam 5 is rotatably mounted on the first pawl holder 6 via a shaft-hole clearance fit, or the first magnetic cam 5 is rotatably mounted on the first pawl holder 6 via a bearing. The first magnetic cam 5 interacts with the second friction wheel 9 and the first pawl holder 6 interacts with the first friction wheel 8 through magnetic force, or the first magnetic cam 5 interacts with the first friction wheel 8 and the first pawl holder 6 interacts with the second friction wheel 9 through magnetic force. When the first friction wheel 8 rotates relative to the second friction wheel 9, the first magnetic cam 5 is rotatable relative to the first pawl holder 6 between a first defined angle and a second defined angle under the action of the magnetic force. The first return spring 3 is connected to the first pawl 1. The first pawl 1 is mounted on the first pawl holder 6, and the first magnetic cam 5 is connected to the first pawl 1, allowing the first pawl 1 to rotate relative to the first pawl holder 6 within a certain angular range. When the first magnetic cam 5 rotates relative to the first pawl holder 6 to the first defined angular position, the second friction wheel 9 is selectively engaged with the first friction wheel 8 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl holder 6, the second friction wheel 9 is separated from the first friction wheel 8 due to the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl holder 6, the first magnetic cam 5, the first return spring 3, and the first pawl 1 provide the clutch with a magnetic cam with a certain rotational angle tolerance. The first friction wheel 8 and the second friction wheel 9 are respectively connected to external components.

[0014] Furthermore, the pawl includes a first pawl 1. The ratchet includes a first ratchet 2. The return spring includes a first return spring 3. The pawl seat includes a first pawl seat 4. The magnetic cam includes a first magnetic cam 5. The first magnetic cam 5 is disposed on the first pawl seat 4, interacts with the first ratchet 2 through magnetic force, and when the first ratchet 2 rotates relative to the first magnetic cam 5, the first magnetic cam 5 is rotatable relative to the first pawl seat 4 between a first limited angle and a second limited angle under the action of the magnetic force. Alternatively, the first magnetic cam 5 is disposed on the first ratchet 2, interacts with the first pawl seat 4 through magnetic force, and when the first pawl seat 4 rotates relative to the first magnetic cam 5, the first magnetic cam 5 is rotatable relative to the first ratchet 2 between a first limited angle and a second limited angle under the action of the magnetic force. The first return spring 3 is connected to the first pawl 1. The first pawl 1 is disposed on the first pawl seat 4, and the first magnetic cam 5 is connected to the first pawl 1. The first pawl 1 is rotatable relative to the first pawl seat 4 within a certain angular range. When the first magnetic cam 5 is disposed on the first pawl seat 4 and rotates to the first defined angular position relative to the first pawl seat 4, or when the first magnetic cam 5 is disposed on the first ratchet 2 and rotates to the first defined angular position relative to the first ratchet 2, the first pawl seat 4 is selectively engaged with the first ratchet 2 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 is disposed on the first pawl seat 4 and rotates to the second limited angular position relative to the first pawl seat 4, or when the first magnetic cam 5 is disposed on the first ratchet wheel 2 and rotates to the second limited angular position relative to the first ratchet wheel 2, the first pawl seat 4 and the first ratchet wheel 2 are separated under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 is disposed on the first pawl seat 4 and rotates to the second limited angular position relative to the first pawl seat 4, or when the first magnetic cam 5 is disposed on the first ratchet wheel 2 and rotates to the second limited angular position relative to the first ratchet wheel 2, the clutch equipped with the magnetic cam has a certain rotational angle tolerance under the action of the first pawl seat 4, the first magnetic cam 5, the first return spring 3, and the first pawl 1, or under the action of the first ratchet wheel 2, the first magnetic cam 5, the first return spring 3, and the first pawl 1.The first ratchet 2 and the first pawl seat 4 are respectively connected to the external components.

[0015] Alternatively, the pawl includes a first pawl 1. The ratchet includes a first ratchet 2. The return spring includes a first return spring 3. The pawl seat includes a first pawl seat 4. The magnetic cam includes a first magnetic cam 5. The first magnetic cam 5 is disposed on the first pawl seat 4 and interacts with the first ratchet 2 through magnetic force. When the first ratchet 2 rotates relative to the first magnetic cam 5, the first magnetic cam 5 is rotatable relative to the first pawl seat 4 between a first defined angle and a second defined angle under the action of the magnetic force. The first return spring 3 is connected to the first pawl 1. The first pawl 1 is disposed on the first magnetic cam 5, and the first pawl seat 4 is connected to the first pawl 1. The first pawl 1 is rotatable relative to the first magnetic cam 5 within a certain angular range. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the first defined angular position, the first pawl seat 4 selectively engages with the first ratchet 2 under the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second limited angular position relative to the first pawl seat 4, the first pawl seat 4 and the first ratchet wheel 2 are separated due to the action of the first magnetic cam 5, the first return spring 3, and the first pawl 1. When the first magnetic cam 5 rotates to the second limited angular position relative to the first pawl seat 4, the clutch with the magnetic cam has a certain rotational angle tolerance due to the action of the first pawl seat 4, the first magnetic cam 5, the first return spring 3, and the first pawl 1. The first ratchet wheel 2 and the first pawl seat 4 are respectively connected to the external components.

[0016] Furthermore, the first pawl 1 includes one or more parts. The first ratchet 2 includes one or more parts. The first return spring 3 includes one or more parts. The first pawl seat 4 includes one or more parts. The first magnetic cam 5 includes one or more parts. The first pawl holder 6 includes one or more parts. The second ratchet includes one or more parts. The first friction wheel 8 includes one or more parts. The second friction wheel 9 includes one or more parts.

[0017] Furthermore, when the magnetic cam is arranged on the active semi-clutch, when the magnetic cam rotates to the first limited angular position relative to the active semi-clutch, the active semi-clutch has a certain angular positioning effect on the magnetic cam. When the magnetic cam is arranged on the active semi-clutch, when the magnetic cam rotates to the second limited angular position relative to the active semi-clutch, the active semi-clutch has a certain angular positioning effect on the magnetic cam. When the magnetic cam is arranged on the passive semi-clutch, when the magnetic cam rotates to the first limited angular position relative to the passive semi-clutch, the passive semi-clutch has a certain angular positioning effect on the magnetic cam. When the magnetic cam is arranged on the passive semi-clutch, when the magnetic cam rotates to the second limited angular position relative to the passive semi-clutch, the passive semi-clutch has a certain angular positioning effect on the magnetic cam. When the magnetic cam is disposed on the first pawl holder 6, and when the magnetic cam rotates to the first limited angular position relative to the first pawl holder 6, the first pawl holder 6 has a certain angular positioning effect on the magnetic cam. When the magnetic cam is disposed on the first pawl holder 6, and when the magnetic cam rotates to the second limited angular position relative to the first pawl holder 6, the first pawl holder 6 has a certain angular positioning effect on the magnetic cam. When the magnetic cam is disposed on the active half-clutch, the magnetic cam is rotatably disposed on the active half-clutch through a shaft hole clearance fit, or the magnetic cam is rotatably disposed on the active half-clutch through a bearing. When the magnetic cam is disposed on the passive half-clutch, the magnetic cam is rotatably disposed on the passive half-clutch through a shaft hole clearance fit, or the magnetic cam is rotatably disposed on the passive half-clutch through a bearing. When the pawl is provided on the active semi-clutch, the pawl is rotatably provided on the active semi-clutch by a clearance fit between the shaft and the hole, or the pawl is rotatably provided on the active semi-clutch via a bearing. When the pawl is provided on the magnetic cam, the pawl is rotatably provided on the magnetic cam by a clearance fit between the shaft and the hole, or the pawl is rotatably provided on the magnetic cam via a bearing. When the pawl is provided on the first pawl holder 6, the pawl is rotatably provided on the first pawl holder 6 by a clearance fit between the shaft and the hole, or the pawl is rotatably provided on the first pawl holder 6 via a bearing.

[0018] Compared with the prior art, the clutch provided with the magnetic cam of the present invention can reduce mechanical friction in the disengaged state.

[0019] The present invention also provides a magnetic coupling. The magnetic coupling utilizes the clutch with the magnetic cam to achieve coupling functionality. Alternatively, the magnetic coupling can selectively achieve locking between the active and passive semi-clutches through speed control or direction control of the active semi-clutch or through speed control or direction control of the passive semi-clutch.

[0020] Compared with the prior art, the magnetic coupling of the present invention can selectively realize a locking function between the active semi-clutch and the passive semi-clutch.

[0021] The above features and advantages of the present invention, as well as other features and advantages, will be readily apparent from the following detailed description of the best mode for implementing the present invention in conjunction with the accompanying drawings. However, it should be clearly understood that all the drawings are for description only and are not intended to limit the definition and scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figures 1 to 40 It is a schematic diagram of the structure of Examples 1 to 5. In which:

[0023] Figure 1 -Schematic diagram of the 3D structure of Example 1 in the joined state.

[0024] Figure 2 -3D cross-sectional structural diagram and partial enlarged diagram of Example 1 in the joined state.

[0025] Figure 3 - Schematic diagram of the 3D structure explosion in the joined state of Example 1 (two perspectives).

[0026] Figure 4 -Front view and partially enlarged schematic diagram of Example 1 in the joined state.

[0027] Figure 5 - Schematic diagram of radial section and partial enlargement of Example 1 in the engaged state.

[0028] Figure 6 -Axial sectional partial view and partial enlarged schematic diagram of Example 1.

[0029] Figure 7 -Front view and partial enlarged schematic diagram of Example 1 in the separated state.

[0030] Figure 8 - Schematic diagram of radial section and partial enlargement of Example 1 in the separated state.

[0031] Figure 9 -Schematic diagram of the 3D structure of Example 2 in the joined state.

[0032] Figure 10 -3D cross-sectional structural diagram and partial enlarged diagram of Example 2 in the joined state.

[0033] Figure 11 -Schematic diagram of the 3D structure explosion in the bonding state of Example 2 (two perspectives).

[0034] Figure 12 -Front view and partially enlarged schematic diagram of Example 2 in the joined state.

[0035] Figure 13 - Schematic diagram of radial section and partial enlargement of Example 2 in the engaged state.

[0036] Figure 14 -Axial sectional partial view and partial enlarged schematic diagram of Example 2.

[0037] Figure 15 -Front view and partially enlarged schematic diagram of Example 2 in the separated state.

[0038] Figure 16 - Schematic diagram of radial section and partial enlargement of Example 2 in the separated state.

[0039] Figure 17 -Schematic diagram of the 3D structure of Example 3 in the joined state.

[0040] Figure 18 -3D cross-sectional structural diagram and partial enlarged diagram of Example 3 in the joined state.

[0041] Figure 19 -Schematic diagram of the 3D structure explosion in the joined state of Example 3 (two perspectives).

[0042] Figure 20 - Schematic diagram of radial section and partial enlargement of Example 3 in the engaged state.

[0043] Figure 21 -A second radial cross-sectional schematic diagram and a partially enlarged schematic diagram of Example 3 in the engaged state.

[0044] Figure 22 -Axial sectional partial view and partial enlarged schematic diagram of Example 3.

[0045] Figure 23 - Schematic diagram of radial section and partial enlargement of Example 3 in the separated state.

[0046] Figure 24 -A second radial cross-sectional schematic diagram and a partially enlarged schematic diagram of Example 3 in a separated state.

[0047] Figure 25 -Schematic diagram of the 3D structure of Example 4 in the joined state.

[0048] Figure 26 -3D cross-sectional structural diagram and partial enlarged diagram of Example 4 in the joined state.

[0049] Figure 27 -Schematic diagram of the 3D structure explosion in the joined state of Example 4 (two perspectives).

[0050] Figure 28 -Front view and partially enlarged schematic diagram of Example 4 in the joined state.

[0051] Figure 29 - Schematic diagram of radial section and partial enlargement of Example 4 in the engaged state.

[0052] Figure 30 -Axial sectional partial view and partial enlarged schematic diagram of Example 4.

[0053] Figure 31 -Front view and partially enlarged schematic diagram of Example 4 in the separated state.

[0054] Figure 32 - Schematic diagram of radial section and partial enlargement of Example 4 in the separated state.

[0055] Figure 33 -Schematic diagram of the 3D structure of Example 5 in the joined state.

[0056] Figure 34 -3D cross-sectional structural diagram and partial enlarged diagram of Example 5 in the joined state.

[0057] Figure 35 -Schematic diagram of the 3D structure explosion in the joined state of Example 5 (two perspectives).

[0058] Figure 36 -Front view and partially enlarged schematic diagram of Example 5 in the engaged state.

[0059] Figure 37 - Schematic diagram of radial section and partial enlargement of Example 5 in the engaged state.

[0060] Figure 38 -Axial sectional partial view and partial enlarged schematic diagram of Example 5.

[0061] Figure 39 -Front view and partially enlarged schematic diagram of Example 5 in the separated state.

[0062] Figure 40- Schematic diagram of radial section and partial enlargement of Example 5 in the separated state.

[0063] Explanation of the marks in the figure: 1-first pawl, 2-first ratchet, 3-first return spring, 4-first pawl seat, 5-first magnetic cam, 6-first pawl retaining frame, 8-first friction wheel, 9-second friction wheel, 12-radial protruding teeth of the first magnetic cam 5, 14-groove of the first pawl seat 4, 15-groove of the first pawl 1, 21-first ratchet bracket, 22-first ratchet cover, 23-first ratchet magnet, 24-blocking arm of the first pawl 1, 25-radial tooth groove of the first pawl seat 4, 30-first bearing, 31-riveted boss of the first pawl 1, 32-second bearing, 35-first pawl holding bracket magnet, 36-first pawl 6-axial boss of the first magnetic cam 5, 37-first pawl holding bracket, 38-second pawl holding bracket, 39-radial convex teeth of the first pawl holding bracket 37, 41-axial boss of the first pawl seat 4, 50-first magnetic cam magnet, 51-first magnetic cam bracket, 52-second magnetic cam bracket, 53-first magnetic cam iron block, 54-radial convex teeth of the first magnetic cam bracket 51, 81-first friction wheel bracket, 82-first friction wheel cover plate, 83-first friction wheel magnet, 86-first friction wheel iron block, 91-second friction wheel bracket, 92-second friction wheel cover plate, 93-second friction wheel iron block.

[0064] For ease of description, the rotation direction indicated by the arrow in the figure is the forward rotation direction adopted by the corresponding embodiment. DETAILED DESCRIPTION

[0065] The present invention will be further described below with reference to the accompanying drawings and examples, but the present invention is not limited to the description of the examples. Obviously, the description is only a part of the preferred embodiments of the present invention, not all embodiments. Those skilled in the art will readily make many changes based on the principles of the invention. Therefore, the present invention is not limited to the details shown and described, but is intended to include all changes and modifications within the scope of the claims.

[0066] The terms used herein are only used to describe the purpose of specific exemplary embodiments and are not intended to be limiting. As used herein, the singular forms "one", "an", etc. may also be intended to include plural forms, unless the context clearly indicates otherwise. The terms "including" and "having" are inclusive and therefore specify the presence of the features, wholes, steps, operations, parts, components, parts and / or assemblies, but do not exclude the presence or increase of one or more other features, wholes, steps, operations, parts, components, parts, assemblies and / or combinations thereof. The method steps, procedures and operations described herein should not be understood as necessarily needing to be performed in the specific order discussed or described, unless specifically identified as an execution order. It should also be understood that additional or alternative steps may be adopted.

[0067] Although the terms first, second, third, etc. may be used herein to describe various parts, components, parts, assemblies, layers and / or portions, these parts, components, parts, assemblies, layers and / or portions should not be limited by these terms. These terms may only be used to distinguish one part, component, part, assembly, layer and / or portion. Terms such as "first," "second," "third," and other numerical terms do not imply an order or sequence when used herein unless the context clearly indicates otherwise.

[0068] The “axial direction” in the embodiments refers to the axial direction of the clutch provided with the magnetic cam, and the “radial direction” in the embodiments refers to the radial direction of the clutch provided with the magnetic cam, unless the context clearly indicates otherwise.

[0069] Example 1

[0070] A clutch with a magnetic cam, such as Figures 1 to 8 As shown, it includes a first pawl 1, a first ratchet 2, a first return spring 3, a first pawl seat 4, and a first magnetic cam 5. The first ratchet 2 includes a first ratchet bracket 21, a first ratchet cover 22, and a first ratchet magnet 23. The first magnetic cam 5 includes a first magnetic cam bracket 51 and a first magnetic cam magnet 50.

[0071] The first ratchet 2 and the first magnetic cam 5 are coaxially arranged with the first pawl seat 4. The first ratchet 2 and the first pawl seat 4 are respectively connected to external components (not shown, and the external components are components excluding the "components of the clutch provided with the magnetic cam") via splines. Optionally, to ensure a certain degree of coaxiality between the first ratchet 2 and the first pawl seat 4, the first ratchet 2 can also be rotatably mounted on the first pawl seat 4 via a bearing (see Chinese Invention Patent Application No. 2021100587947).

[0072] The first magnetic cam magnet 50 is fixedly connected to the first magnetic cam bracket 51. The first magnetic cam 5 is arranged on the first pawl seat 4 through the clearance of the shaft hole, and the first magnetic cam 5 is rotatable relative to the first pawl seat 4. Optionally, in order to reduce the friction resistance of the first magnetic cam 5, the first magnetic cam 5 can also be rotatably arranged on the first pawl seat 4 through a bearing (refer to the Chinese invention patent application number 2021100587947). The radial protruding teeth 12 of the first magnetic cam 5 cooperate with the radial tooth grooves 25 of the first pawl seat 4, so that the first magnetic cam 5 can rotate relative to the first pawl seat 4 between a first limited angle and a second limited angle.

[0073] like Figure 6 As shown, the first ratchet magnet 23 is fixedly connected to the first ratchet cover 22. The first ratchet cover 22 is mounted on the first ratchet bracket 21 via an interference fit in the shaft hole. Optionally, the first ratchet cover 22 and the first ratchet bracket 21 can also be connected to each other using known methods (such as a shaft hole transition fit, a spline connection, or a threaded connection).

[0074] The first magnetic cam 5 is rotatable relative to the first ratchet 2. Optionally, to ensure a certain degree of coaxiality between the first magnetic cam 5 and the first ratchet 2, the first magnetic cam 5 can also be rotatably arranged on the first ratchet 2 through a shaft hole clearance fit or a bearing.

[0075] like Figure 2 As shown in Figure 6, in the axial direction, a clearance fit is adopted between the first magnetic cam magnet 50 and the first ratchet magnet 23. Optionally, to increase the magnetic interaction, the number of the first magnetic cam magnet 50 and the first ratchet magnet 23 can be increased, or the gap between the first magnetic cam magnet 50 and the first ratchet magnet 23 can be appropriately reduced.

[0076] When the first ratchet 2 rotates relative to the first magnetic cam 5, the first ratchet cover 22 drives the first ratchet magnet 23 to rotate. The first ratchet magnet 23 drives the first magnetic cam magnet 50 to rotate through magnetic force. In turn, the first magnetic cam magnet 50 drives the first magnetic cam bracket 51 to rotate. In this way, when the first ratchet 2 rotates relative to the first magnetic cam 5, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle under the action of magnetic force.

[0077] Furthermore, when the first magnetic cam 5 rotates relative to the first pawl seat 4 between the first limited angle and the second limited angle, the first magnetic cam 5 is rotated between the first limited angle and the second limited angle in a manner known in the art (for example, reducing the friction coefficient of each friction surface, providing bearing support, reasonably selecting the material of the first magnetic cam magnet 50 and the first ratchet magnet 23, reasonably setting the magnetic field strength of the first magnetic cam magnet 50 and the first ratchet magnet 23, reasonably designing the axial gap between the first magnetic cam magnet 50 and the first ratchet magnet 23, reasonably designing the specific structure and size of the first magnetic cam magnet 50 and the first ratchet magnet 23, or reasonably setting the magnet array of the first magnetic cam magnet 50 and the first ratchet magnet 23, etc. (such as Figure 3 As shown in the figure, the magnetic force between the first ratchet wheel 2 and the first magnetic cam 5 is greater than the resistance of other components to the first magnetic cam 5. Thus, under the action of the magnetic force, the first magnetic cam 5 can rotate between the first limited angle and the second limited angle relative to the first pawl seat 4. Under the action of the retaining arm 24 of the first pawl 1, the first magnetic cam 5 is axially fixed relative to the first pawl seat 4.

[0078] Optionally, based on various considerations such as economy, reliability, and working conditions, the first magnetic cam 5 can also interact with the first ratchet 2 through magnetic force in a known manner. For example, the first magnetic cam magnet 50 can be replaced with a magnetic material component having a certain magnetic force, or the first ratchet magnet 23 can be replaced with a magnetic material component having a certain magnetic force, etc.; a magnetic component can also be provided on the first ratchet 2, and a magnetic material component with a certain magnetic force can be provided on the first magnetic cam 5, or a magnetic component can also be provided on the first magnetic cam 5, and a magnetic material component with a certain magnetic force can be provided on the first ratchet 2, so that when the first ratchet 2 rotates relative to the first magnetic cam 5, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle.

[0079] The first return spring 3 has a certain degree of elasticity. Under the elastic force of the first return spring 3, the first pawl 1 is mounted on the first pawl seat 4 with a clearance fit in the shaft hole. The first pawl 1 is rotatable relative to the first pawl seat 4 within a certain angular range. The first return spring 3 is disposed within the groove 14 of the first pawl seat 4 and the groove 15 of the first pawl 1. As a result, the first return spring 3 fixes the first pawl 1 axially relative to the first pawl seat 4.

[0080] The first magnetic cam 5 interacts with the first pawl 1 through contact. When the first magnetic cam 5 rotates to the first limited angular position relative to the first pawl seat 4, under the action of the first return spring 3, the first pawl 1, and the first magnetic cam 5, the first pawl seat 4 and the first ratchet 2 are selectively engaged and disengaged. At this time, the first pawl seat 4 selectively transmits the power or movement of the first pawl seat 4 to the first ratchet 2, or the first ratchet 2 selectively transmits the power or movement of the first ratchet 2 to the first pawl seat 4. When the first magnetic cam 5 rotates to the second limited angular position relative to the first pawl seat 4, under the action of the first return spring 3, the first pawl 1, and the first magnetic cam 5, the first pawl 1 is disengaged from the first ratchet 2, and the first pawl seat 4 and the first ratchet 2 are in a separated state.

[0081] Preferably, in the initial state, the first magnetic cam 5 is at the first limited angle position relative to the first pawl seat 4, and the first pawl seat 4 is in an engaged state with the first ratchet wheel 2. Figures 1 to 5 At this time, in the reverse rotation direction (opposite to the rotation direction indicated by the arrow in the figure), the first ratchet 2 is fixed relative to the first pawl seat 4. When the first ratchet 2 rotates forward relative to the first pawl seat 4 (in the rotation direction indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the second limited angular position under the action of the magnetic force.

[0082] like Figures 7-8 As shown, when the first magnetic cam 5 rotates relative to the first pawl seat 4 to the second defined angular position, the first pawl 1 disengages from the first ratchet 2, and the first pawl seat 4 and the first ratchet 2 are separated. The first ratchet 2 can rotate relative to the first pawl seat 4 in the forward direction (the direction of rotation indicated by the arrow in the figure). When the first ratchet 2 rotates reversely relative to the first pawl seat 4 (opposite to the direction of rotation indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the first defined angular position under the action of the magnetic force.

[0083] When the first magnetic cam 5 rotates to the first limited angle position relative to the first pawl seat 4, and when the first ratchet 2 reverses or has a reverse motion trend relative to the first pawl seat 4, the first pawl seat 4 and the first ratchet 2 can be selectively engaged, and the first ratchet 2 can be fixed relative to the first pawl seat 4 in the reverse direction. Figures 4-5 As shown, when the first pawl seat 4 is in an engaged state with the first ratchet 2 , the first ratchet 2 is fixed relative to the first pawl seat 4 in the reverse direction.

[0084] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, and when the first ratchet wheel 2 rotates forward relative to the first pawl seat 4, Figures 7-8 As shown, the first pawl 1 is out of contact with the first ratchet 2, thereby avoiding or reducing the mechanical friction between the pawl and the ratchet.

[0085] Furthermore, the first magnetic cam 5 interacts with the first ratchet 2 through magnetic force, thereby avoiding or reducing mechanical friction between the first magnetic cam 5 and the first ratchet 2 .

[0086] Alternatively, when the first magnetic cam 5 rotates relative to the first ratchet wheel 2, heat generated due to various reasons can be dissipated by conventional methods, such as adding heat dissipation blades to dissipate heat by convection, dissipating heat by heat conduction, or providing a dedicated heat dissipation system.

[0087] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, in order to ensure that the first pawl 1 is disengaged from the first ratchet 2, the clutch provided with the magnetic cam has a certain rotation angle tolerance: within a certain angle range, due to the certain discontinuity of the magnetic force between multiple magnets (or angular intervals, or similar magnetic tooth effects, resulting in the first magnetic cam 5 having a stable magnetic interaction with the first ratchet 2 at several angle positions), or due to the certain discontinuity of the magnetic force between multiple magnets and multiple magnetic material components, even if the first magnetic cam 5 rotates a certain angle relative to the first pawl seat 4 under the action of discontinuous magnetic force, the first pawl 1 is still disengaged from the first ratchet 2. By increasing the interval angle between the first limited angle and the second limited angle (such as Figures 1 to 8 As shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Optionally, by reducing the spacing angle of the magnets and magnetic material components (i.e., increasing the number of magnets and magnetic material components arranged in the circumferential direction as shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Figure 3 As shown), thereby reducing the rotation angle of the first magnetic cam 5 relative to the first pawl seat 4 caused by the discontinuous magnetic force (so that the rotation angle tolerance requirement of the clutch provided with the magnetic cam can be reduced within a certain range).

[0088] Optionally, when the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force is within a certain range, the clutch provided with a magnetic cam can be used as a clutch (as described above). When the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force exceeds a certain range (for example, when the magnetic field strength of the magnet exceeds a certain range, or when the number of magnet components exceeds a certain range, or when the number of magnet components and magnetic material components exceeds a certain range, or when a magnetic material with a larger magnetic effect is used, or when the magnet array is reasonably arranged, or when other existing technologies are used to increase the magnetic interaction between the first magnetic cam 5 and the first ratchet 2), the clutch provided with a magnetic cam can be selectively used as a magnetic coupling. Specifically as follows:

[0089] 1. When the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force exceeds a certain range, and when the first pawl 1 and the first ratchet 2 have an overload protection function (for details, please refer to the Chinese invention patent application number 2021100587947).

[0090] 1. When the first magnetic cam 5 is at the first limited angle position relative to the first pawl seat 4:

[0091] (1) When the first pawl seat 4 rotates forward relative to the first ratchet wheel 2 to input power, and when the force between the first pawl 1 and the first ratchet wheel 2 is within a certain range, the first pawl seat 4 and the first ratchet wheel 2 are in an engaged state or a locked state. Driven by the first pawl seat 4, the first ratchet wheel 2 rotates forward to output power. At this time, the clutch provided with the magnetic cam has a locking function.

[0092] (2) When the first pawl seat 4 rotates forward relative to the first ratchet 2 to input power, and when the force between the first pawl 1 and the first ratchet 2 exceeds a certain range, the first pawl 1 and the first ratchet 2 are in a separated state. Under the action of the magnetic force, the first pawl seat 4 drives the first ratchet 2 to rotate forward to output power through the first magnetic cam 5. At this time, the clutch with the magnetic cam has an overload protection function, and the clutch with the magnetic cam has the technical effect of a magnetic coupling.

[0093] (3) When the first pawl seat 4 reverses the input power relative to the first ratchet 2, under the action of the magnetic force, the first magnetic cam 5 can rotate to the second positioning angle position relative to the first pawl seat 4.

[0094] 2. When the first magnetic cam 5 is at the second limited angle position relative to the first pawl seat 4:

[0095] (1) When the first pawl seat 4 rotates in the reverse direction relative to the first ratchet wheel 2 and inputs power, the radial tooth grooves 25 of the first pawl seat 4 drive the first magnetic cam 5 to rotate in the reverse direction, and the first magnetic cam 5 then drives the first ratchet wheel 2 in the reverse direction through magnetic force, so that the first ratchet wheel 2 outputs power in the reverse direction. In this case, the clutch with the magnetic cam has the technical effect of a magnetic coupling.

[0096] (2) When the first pawl seat 4 rotates forward relative to the first ratchet wheel 2 and inputs power, the first magnetic cam 5 can rotate to the first positioning angle position relative to the first pawl seat 4 under the action of magnetic force.

[0097] 3. Similarly, when the first ratchet 2 is input with power in the forward rotation relative to the first pawl seat 4, it has the technical effect of a magnetic coupling; when the first ratchet 2 is input with power in the reverse rotation relative to the first pawl seat 4, and when the action force between the first pawl 1 and the first ratchet 2 is within a certain range, the clutch provided with a magnetic cam has a locking function; when the first ratchet 2 is input with power in the reverse rotation relative to the first pawl seat 4, and when the action force between the first pawl 1 and the first ratchet 2 exceeds a certain range, the clutch provided with a magnetic cam has an overload protection function, and the clutch provided with a magnetic cam has the technical effect of a magnetic coupling.

[0098] Therefore, under certain conditions, when the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force exceeds a certain range, the clutch provided with the magnetic cam can be used as a magnetic coupling with multiple functions.

[0099] 2. When the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force exceeds a certain range, and when the first pawl 1 and the first ratchet 2 have a self-locking function (for details, please refer to the Chinese invention patent application number 2021100587947).

[0100] 1. When the first magnetic cam 5 is at the first limited angle position relative to the first pawl seat 4:

[0101] (1) When the first pawl seat 4 rotates forward relative to the first ratchet wheel 2 and inputs power, the first pawl seat 4 and the first ratchet wheel 2 are in an engaged state or a locked state. Driven by the first pawl seat 4, the first ratchet wheel 2 rotates forward and outputs power. At this time, the clutch provided with the magnetic cam has a locking function.

[0102] (2) When the first pawl seat 4 reverses the input power relative to the first ratchet 2, under the action of the magnetic force, the first magnetic cam 5 can rotate to the second positioning angle position relative to the first pawl seat 4.

[0103] 2. When the first magnetic cam 5 is at the second limited angle position relative to the first pawl seat 4:

[0104] (1) When the first pawl seat 4 rotates in the reverse direction relative to the first ratchet wheel 2 and inputs power, the radial tooth grooves 25 of the first pawl seat 4 drive the first magnetic cam 5 to rotate in the reverse direction, and the first magnetic cam 5 then drives the first ratchet wheel 2 in the reverse direction through magnetic force, so that the first ratchet wheel 2 outputs power in the reverse direction. In this case, the clutch with the magnetic cam has the technical effect of a magnetic coupling.

[0105] (2) When the first pawl seat 4 rotates forward relative to the first ratchet wheel 2 and inputs power, the first magnetic cam 5 can rotate to the first positioning angle position relative to the first pawl seat 4 under the action of magnetic force.

[0106] 3. Similarly, when the first ratchet wheel 2 rotates forward relative to the first pawl seat 4 to input power, it has the technical effect of a magnetic coupling; when the first ratchet wheel 2 rotates backward relative to the first pawl seat 4 to input power, the clutch provided with the magnetic cam has a locking function.

[0107] Therefore, under certain conditions, when the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force exceeds a certain range, the clutch provided with the magnetic cam can be used as a magnetic coupling with a locking function.

[0108] 3. When the magnetic interaction between the first magnetic cam 5 and the first ratchet 2 exceeds a certain range, and when the first pawl seat 4 has an angular positioning effect on the first magnetic cam 5. For example, at both the first limited angular position and the second limited angular position, the first pawl seat 4 has a certain angular positioning effect on the first magnetic cam 5 (for details, please refer to Chinese invention patent application number 2021100587947).

[0109] 1. When the first magnetic cam 5 is at the first limited angular position relative to the first pawl seat 4 , and the first pawl seat 4 has a certain angular positioning effect on the first magnetic cam 5 .

[0110] (1) When the first pawl seat 4 rotates forward relative to the first ratchet wheel 2 to input power, the first pawl seat 4 and the first ratchet wheel 2 are in an engaged state or a locked state. Driven by the first pawl seat 4, the first ratchet wheel 2 rotates forward to output power. At this time, the clutch provided with the magnetic cam has a locking function.

[0111] (2) When the first pawl seat 4 reverses and inputs power relative to the first ratchet 2, and the effect of the first ratchet 2 on the first magnetic cam 5 through magnetic force is less than the positioning effect of the first pawl seat 4 on the first ratchet 2, the first pawl seat 4 drives the first magnetic cam 5 to reverse through its positioning effect, and then the first magnetic cam 5 drives the first ratchet 2 to reverse through magnetic force, so that the first ratchet 2 reversely outputs power. At this time, the clutch provided with the magnetic cam has the technical effect of a magnetic coupling.

[0112] (3) When the first pawl seat 4 reverses the input power relative to the first ratchet 2, and the effect of the first ratchet 2 on the first magnetic cam 5 through the magnetic force is greater than the positioning effect of the first pawl seat 4 on the first ratchet 2, the first magnetic cam 5 can rotate to the second positioning angle relative to the first pawl seat 4 under the action of the magnetic force.

[0113] 2. When the first magnetic cam 5 is at the second limited angular position relative to the first pawl seat 4 , and the first pawl seat 4 has a certain angular positioning effect on the first magnetic cam 5 .

[0114] (1) When the first pawl seat 4 rotates in the reverse direction relative to the first ratchet wheel 2 and inputs power, the radial tooth grooves 25 of the first pawl seat 4 drive the first magnetic cam 5 to rotate in the reverse direction, and the first magnetic cam 5 then drives the first ratchet wheel 2 in the reverse direction through magnetic force, so that the first ratchet wheel 2 outputs power in the reverse direction. In this case, the clutch with the magnetic cam has the technical effect of a magnetic coupling.

[0115] (2) When the first pawl seat 4 rotates forward relative to the first ratchet 2 within a certain speed range to input power, the effect of the first ratchet 2 on the first magnetic cam 5 through magnetic force is less than the positioning effect of the first pawl seat 4 on the first ratchet 2. The first pawl seat 4 drives the first magnetic cam 5 to rotate forward through the positioning effect, and then the first magnetic cam 5 drives the first ratchet 2 to rotate forward through magnetic force, so that the first ratchet 2 rotates forward to output power. At this time, the clutch provided with the magnetic cam has the technical effect of a magnetic coupling.

[0116] (3) When the first pawl seat 4 inputs power in a forward rotation relative to the first ratchet 2, and the effect of the first ratchet 2 on the first magnetic cam 5 through the magnetic force is greater than the positioning effect of the first pawl seat 4 on the first ratchet 2, the first magnetic cam 5 can rotate to the first positioning angle relative to the first pawl seat 4 under the action of the magnetic force.

[0117] 3. Similarly, when the first ratchet 2 rotates forward relative to the first pawl seat 4 and inputs power, it has the technical effect of a magnetic coupling. When the first ratchet 2 rotates backward relative to the first pawl seat 4 and inputs power, it has a locking function and the technical effect of a magnetic coupling. Therefore, under certain conditions, when the magnetic interaction between the first magnetic cam 5 and the first ratchet 2 exceeds a certain range, the clutch equipped with a magnetic cam can be used as a magnetic coupling with multiple functions.

[0118] Example 2

[0119] A clutch with a magnetic cam, such as Figures 9 to 16 As shown, it includes a first pawl 1, a first ratchet 2, a first return spring 3, a first pawl seat 4, a first magnetic cam 5, and a first bearing 30. The first ratchet 2 includes a first ratchet bracket 21, a first ratchet cover 22, and a first ratchet magnet 23; the first magnetic cam 5 includes a first magnetic cam bracket 51, a second magnetic cam bracket 52, and a first magnetic cam magnet 50.

[0120] like Figure 14 As shown, the first magnetic cam magnet 50 is fixedly connected to the first magnetic cam bracket 51. Under the action of the riveted boss 31 of the first pawl 1, the first magnetic cam bracket 51 and the second magnetic cam bracket 52 are connected to each other.

[0121] like Figure 10 as well as Figure 14 As shown, the first ratchet magnet 23 is fixedly connected to the first ratchet cover 22. The first ratchet cover 22 is mounted on the first ratchet bracket 21 via an interference fit in the shaft hole. Optionally, the first ratchet cover 22 and the first ratchet bracket 21 can also be connected to each other using known methods (such as a shaft hole transition fit, a spline connection, or a threaded connection).

[0122] The first ratchet 2 and the first magnetic cam 5 are coaxially arranged with the first pawl seat 4. The first ratchet 2 and the first pawl seat 4 are each connected to external components (not shown, excluding the components of the clutch with the magnetic cam) via splines. Optionally, to ensure a certain degree of coaxiality between the first ratchet 2 and the first pawl seat 4, the first ratchet 2 can be rotatably mounted on the first pawl seat 4 via a bearing.

[0123] The first magnetic cam 5 and the axial boss 41 of the first pawl seat 4 are fitted with an axial hole clearance, so that the first magnetic cam 5 can be rotatably set on the first pawl seat 4. Optionally, to reduce the friction resistance of the first magnetic cam 5, the first magnetic cam 5 can also be rotatably set on the first pawl seat 4 via a bearing. The radial protruding teeth 54 of the first magnetic cam bracket 51 cooperate with the axial boss 41 of the first pawl seat 4, so that the first magnetic cam 5 can rotate relative to the first pawl seat 4 between a first limited angle and a second limited angle. The first magnetic cam bracket 51 and the second magnetic cam bracket 52 respectively interact with the first pawl seat 4 through contact, and under the action of the riveted boss 31 of the first pawl 1, the first magnetic cam 5 is fixed axially relative to the first pawl seat 4.

[0124] like Figure 14 As shown, the first ratchet cover plate 22 is rotatably mounted on the first magnetic cam bracket 51 via the first bearing 30. Axially, a clearance fit is employed between the first magnetic cam magnet 50 and the first ratchet magnet 23. To enhance magnetic interaction, the number of first magnetic cam magnets 50 and first ratchet magnets 23 can be increased, or the gap between the first magnetic cam magnet 50 and the first ratchet magnet 23 can be appropriately reduced.

[0125] When the first ratchet 2 rotates relative to the first magnetic cam 5, the first ratchet cover 22 drives the first ratchet magnet 23 to rotate. The first ratchet magnet 23 drives the first magnetic cam magnet 50 to rotate through magnetic force. In turn, the first magnetic cam magnet 50 drives the first magnetic cam bracket 51 to rotate. In this way, when the first ratchet 2 rotates relative to the first magnetic cam 5, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle under the action of magnetic force.

[0126] Furthermore, when the first magnetic cam 5 rotates relative to the first pawl seat 4 between the first limited angle and the second limited angle, the first magnetic cam 5 is rotated between the first limited angle and the second limited angle in a manner known in the art (for example, reducing the friction coefficient of each friction surface, providing bearing support, reasonably selecting the material of the first magnetic cam magnet 50 and the first ratchet magnet 23, reasonably setting the magnetic field strength of the first magnetic cam magnet 50 and the first ratchet magnet 23, reasonably designing the axial gap between the first magnetic cam magnet 50 and the first ratchet magnet 23, reasonably designing the specific structure and size of the first magnetic cam magnet 50 and the first ratchet magnet 23, or reasonably setting the magnet array of the first magnetic cam magnet 50 and the first ratchet magnet 23, etc. (such as Figure 11As shown in FIG, the magnetic force between the first ratchet wheel 2 and the first magnetic cam 5 is greater than the resistance of other components to the first magnetic cam 5. Thus, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle.

[0127] Optionally, based on various considerations such as economy, reliability, and working conditions, the first magnetic cam 5 can also interact with the first ratchet 2 through magnetic force in a known manner. For example, the first magnetic cam magnet 50 can be replaced with a magnetic material component having a certain magnetic force, or the first ratchet magnet 23 can be replaced with a magnetic material component having a certain magnetic force, etc.; a magnetic component can also be provided on the first ratchet 2, and a magnetic material component with a certain magnetic force can be provided on the first magnetic cam 5, or a magnetic component can also be provided on the first magnetic cam 5, and a magnetic material component with a certain magnetic force can be provided on the first ratchet 2, so that when the first ratchet 2 rotates relative to the first magnetic cam 5, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle.

[0128] The first return spring 3 has a certain degree of elasticity. It is mounted on the first magnetic cam bracket 51 and connected to the first pawl 1. The first pawl 1 is mounted on the first magnetic cam 5 with a clearance fit in the axial hole. Under the elastic force of the first return spring 3, the first pawl 1 is rotatable relative to the first magnetic cam 5 within a certain angle range. Furthermore, the riveted boss 31 of the first pawl 1 secures the first pawl 1 axially relative to the first magnetic cam 5.

[0129] The first pawl seat 4 interacts with the first pawl 1 through contact. Under the action of magnetic force, the first magnetic cam 5 is rotatable relative to the first pawl seat 4. When the first magnetic cam 5 rotates to the first limited angular position relative to the first pawl seat 4, under the action of the first return spring 3, the first pawl 1, and the first magnetic cam 5, the first pawl seat 4 and the first ratchet 2 are selectively engaged and disengaged. At this time, the first pawl seat 4 selectively transmits the power or movement of the first pawl seat 4 to the first ratchet 2, or the first ratchet 2 selectively transmits the power or movement of the first ratchet 2 to the first pawl seat 4. When the first magnetic cam 5 rotates to the second limited angular position relative to the first pawl seat 4, under the action of the first return spring 3, the first pawl 1, and the first magnetic cam 5, the first pawl 1 is disengaged from the first ratchet 2, and the first pawl seat 4 and the first ratchet 2 are in a separated state.

[0130] Preferably, in the initial state, the first magnetic cam 5 is at the first limited angle position relative to the first pawl seat 4, and the first pawl seat 4 is in an engaged state with the first ratchet wheel 2. Figures 9-13 At this time, in the reverse rotation direction (opposite to the rotation direction indicated by the arrow in the figure), the first ratchet 2 is fixed relative to the first pawl seat 4. When the first ratchet 2 rotates forward relative to the first pawl seat 4 (in the rotation direction indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the second limited angular position under the action of the magnetic force.

[0131] like Figures 15-16 As shown, when the first magnetic cam 5 rotates relative to the first pawl seat 4 to the second defined angular position, the first pawl 1 disengages from the first ratchet 2, and the first pawl seat 4 and the first ratchet 2 are separated. The first ratchet 2 can rotate relative to the first pawl seat 4 in the forward direction (the direction of rotation indicated by the arrow in the figure). When the first ratchet 2 rotates reversely relative to the first pawl seat 4 (opposite to the direction of rotation indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the first defined angular position under the action of the magnetic force.

[0132] When the first magnetic cam 5 rotates to the first limited angle position relative to the first pawl seat 4, and when the first ratchet 2 reverses relative to the first pawl seat 4, the first pawl seat 4 selectively engages with the first ratchet 2, and the first ratchet 2 can be fixed relative to the first pawl seat 4 in the reverse direction. Figures 12-13As shown, when the first pawl seat 4 is in an engaged state with the first ratchet 2 , the first ratchet 2 is fixed relative to the first pawl seat 4 in the reverse direction.

[0133] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, and when the first ratchet wheel 2 rotates forward relative to the first pawl seat 4, Figures 15-16 As shown, the first pawl 1 is out of contact with the first ratchet 2, thereby avoiding or reducing the mechanical friction between the pawl and the ratchet.

[0134] Furthermore, the first magnetic cam 5 interacts with the first ratchet 2 through magnetic force, thereby avoiding or reducing mechanical friction between the first magnetic cam 5 and the first ratchet 2 .

[0135] Alternatively, when the first magnetic cam 5 rotates relative to the first ratchet wheel 2, heat generated due to various reasons can be dissipated by conventional methods, such as adding heat dissipation blades to dissipate heat by convection, dissipating heat by heat conduction, or providing a dedicated heat dissipation system.

[0136] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, in order to ensure that the first pawl 1 is disengaged from the first ratchet 2, the clutch provided with the magnetic cam has a certain rotation angle tolerance: within a certain angle range, due to the certain discontinuity of the magnetic force between multiple magnets (or angular intervals, or similar magnetic tooth effects, resulting in the first magnetic cam 5 having a stable magnetic interaction with the first ratchet 2 at several angle positions), or due to the certain discontinuity of the magnetic force between multiple magnets and multiple magnetic material components, even if the first magnetic cam 5 rotates a certain angle relative to the first pawl seat 4 under the action of discontinuous magnetic force, the first pawl 1 is still disengaged from the first ratchet 2. By increasing the interval angle between the first limited angle and the second limited angle (such as Figures 9 to 16 As shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Optionally, by reducing the spacing angle of the magnets and magnetic material components (i.e., increasing the number of magnets and magnetic material components arranged in the circumferential direction as shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Figure 11 As shown), thereby reducing the rotation angle of the first magnetic cam 5 relative to the first pawl seat 4 caused by the discontinuous magnetic force (so that the rotation angle tolerance requirement of the clutch provided with the magnetic cam can be reduced within a certain range).

[0137] Similar to Example 1, optionally, when the interaction between the first magnetic cam 5 and the first ratchet 2 is within a certain range, the clutch provided with a magnetic cam can be used as a clutch; under certain conditions, when the interaction between the first magnetic cam 5 and the first ratchet 2 through magnetic force exceeds a certain range, the clutch provided with a magnetic cam can be used as a magnetic coupling with multiple functions.

[0138] Optionally, the first magnetic cam 5 can also be set on the first ratchet 2, and the first pawl 1 can be rotatably set on the first pawl seat 4, and the first magnetic cam 5 interacts with the first pawl seat 4 through magnetic force; when the first pawl seat 4 rotates relative to the first magnetic cam 5, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first ratchet 2 within a certain angle range; under the action of the first magnetic cam 5, the first return spring 3 and the first pawl 1, the first pawl seat 4 selectively engages and disengages with the first ratchet 2 (for details, please refer to the Chinese invention patent with application number 2024115737404).

[0139] Example 3

[0140] A clutch with a magnetic cam, such as Figures 17-24 As shown, it includes a first pawl 1, a first friction wheel 8, a first return spring 3, a first pawl seat 4, a first magnetic cam 5, a first bearing 30, and a second bearing 32. The first friction wheel 8 includes a first friction wheel bracket 81, a first friction wheel cover plate 82, and a first friction wheel magnet 83. The first magnetic cam 5 includes a first magnetic cam bracket 51 and a first magnetic cam iron block 53.

[0141] The first friction wheel 8 and the first magnetic cam 5 are coaxially arranged with the first pawl seat 4. The first friction wheel 8 and the first pawl seat 4 are each connected to external components (not shown, excluding the components of the clutch with the magnetic cam) via splines. Optionally, to ensure a certain degree of coaxiality between the first friction wheel 8 and the first pawl seat 4, the first friction wheel 8 can be rotatably mounted on the first pawl seat 4 via a bearing.

[0142] The material of the first magnetic cam iron block 53 is a magnetic material with a certain magnetic effect (such as pure iron, or alloy steel, etc.). The first magnetic cam iron block 53 is fixedly connected to the first magnetic cam bracket 51. The first magnetic cam 5 is rotatably set on the first pawl seat 4 through the second bearing 32, and the first magnetic cam 5 is rotatable relative to the first pawl seat 4. Optionally, in order to simplify the structure and save costs, the first magnetic cam 5 can also be rotatably set on the first pawl seat 4 through the shaft hole clearance fit. The radial protruding teeth 12 of the first magnetic cam 5 cooperate with the radial tooth grooves 25 of the first pawl seat 4, so that the first magnetic cam 5 can rotate relative to the first pawl seat 4 between a first limited angle and a second limited angle.

[0143] like Figure 18 as well as Figure 22 As shown, the first friction wheel magnet 83 is fixedly connected to the first friction wheel cover plate 82. The first friction wheel cover plate 82 is mounted on the first friction wheel bracket 81 via an interference fit in the shaft hole. Alternatively, the first friction wheel cover plate 82 and the first friction wheel bracket 81 can be connected to each other using known methods (e.g., a shaft hole transition fit, a spline connection, or a threaded connection).

[0144] like Figure 18 as well as Figure 22 As shown, the first friction wheel cover plate 82 is rotatably mounted on the first magnetic cam bracket 51 via the first bearing 30. In the radial direction, a clearance fit is employed between the first friction wheel magnet 83 and the first magnetic cam iron block 53. Optionally, to enhance magnetic interaction, the number of first friction wheel magnets 83 and the first magnetic cam iron block 53 can be increased, or the clearance between the first friction wheel magnet 83 and the first magnetic cam iron block 53 can be appropriately reduced.

[0145] When the first friction wheel 8 rotates relative to the first magnetic cam 5, the first friction wheel cover 82 drives the first friction wheel magnet 83 to rotate. The first friction wheel magnet 83, through magnetic force, drives the first magnetic cam iron block 53 to rotate. In turn, the first magnetic cam iron block 53 drives the first magnetic cam bracket 51 to rotate. Thus, when the first friction wheel 8 rotates relative to the first magnetic cam 5, the magnetic force causes the first magnetic cam 5 to rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle.

[0146] Furthermore, when the first magnetic cam 5 rotates relative to the first pawl seat 4 between the first and second defined angles, the magnetic force between the first friction wheel 8 and the first magnetic cam 5 is greater than the resistance of other components to the first magnetic cam 5, using known techniques (e.g., reducing the friction coefficient of each friction surface, providing bearing support, properly selecting the materials of the first friction wheel magnet 83 and the first magnetic cam iron block 53, properly setting the magnetic field strength of the first friction wheel magnet 83 and the first magnetic cam iron block 53, properly designing the radial gap between the first friction wheel magnet 83 and the first magnetic cam iron block 53, properly designing the specific structure and size of the first friction wheel magnet 83 and the first magnetic cam iron block 53, or properly setting the arrangement of the first friction wheel magnet 83 and the first magnetic cam iron block 53). Thus, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first and second defined angles.

[0147] Optionally, based on various considerations such as cost-effectiveness, reliability, and operating requirements, the first magnetic cam 5 can interact with the first friction wheel 8 through magnetic force using known techniques. For example, the first magnetic cam iron block 53 can be replaced with a magnet having a certain degree of magnetism. The magnet can also be provided on the first magnetic cam 5, and the first friction wheel 8 can be provided with a magnetic material component having a certain degree of magnetic force. Thus, when the first friction wheel 8 rotates relative to the first magnetic cam 5, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle under the action of the magnetic force.

[0148] The first return spring 3 has a certain degree of elasticity and is mounted on the first pawl seat 4. Under the elastic force of the first return spring 3, the first pawl 1 is mounted on the first pawl seat 4 with a clearance fit within the shaft hole. Within a certain angular range, the first pawl 1 is rotatable relative to the first pawl seat 4. The first pawl 1 is axially fixed relative to the first pawl seat 4 by the action of the riveted boss 31 of the first pawl 1.

[0149] The first magnetic cam 5 interacts with the first pawl 1 through contact. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the first defined angular position, the first return spring 3, the first pawl 1, and the first magnetic cam 5 selectively engage and disengage the first pawl seat 4 from the first friction wheel 8. At this point, the first pawl seat 4 selectively transmits the power or motion of the first pawl seat 4 to the first friction wheel 8, and vice versa. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the second defined angular position, the first return spring 3, the first pawl 1, and the first magnetic cam 5 disengage the first pawl 1 from the first friction wheel 8, and the first pawl seat 4 and the first friction wheel 8 are separated.

[0150] Preferably, in the initial state, the first magnetic cam 5 is at the first limited angle position relative to the first pawl seat 4, and the first pawl seat 4 is in an engaged state with the first friction wheel 8. Figures 17-21 At this time, in the reverse rotation direction (opposite to the rotation direction indicated by the arrow in the figure), the first friction wheel 8 is fixed relative to the first pawl seat 4. When the first friction wheel 8 rotates forward relative to the first pawl seat 4 (in the rotation direction indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the second limited angular position under the action of the magnetic force.

[0151] like Figures 23-24 As shown, when the first magnetic cam 5 rotates relative to the first pawl seat 4 to the second limited angular position, the first pawl 1 disengages from the first friction wheel 8, and the first pawl seat 4 and the first friction wheel 8 are separated. The first friction wheel 8 can rotate relative to the first pawl seat 4 in the forward direction (the direction of rotation indicated by the arrow in the figure). When the first friction wheel 8 rotates reversely relative to the first pawl seat 4 (opposite to the direction of rotation indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the first limited angular position under the action of the magnetic force.

[0152] When the first magnetic cam 5 rotates to the first limited angle position relative to the first pawl seat 4, and when the first friction wheel 8 reverses or has a reverse motion trend relative to the first pawl seat 4, the first pawl seat 4 engages with the first friction wheel 8, and the first friction wheel 8 is fixed relative to the first pawl seat 4 in the reverse direction. Figures 20-21As shown, when the first pawl seat 4 and the first friction wheel 8 are in an engaged state, the first friction wheel 8 is fixed relative to the first pawl seat 4 in the reverse direction.

[0153] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, and when the first friction wheel 8 rotates forward relative to the first pawl seat 4, Figures 23-24 As shown, the first pawl 1 is out of contact with the first friction wheel 8, thereby avoiding or reducing the mechanical friction between the pawl and the ratchet wheel.

[0154] Furthermore, the first magnetic cam 5 interacts with the first friction wheel 8 through magnetic force, thereby avoiding or reducing mechanical friction between the first magnetic cam 5 and the first friction wheel 8 .

[0155] Alternatively, when the first magnetic cam 5 rotates relative to the first friction wheel 8, heat generated due to various reasons can be dissipated using conventional methods, such as adding heat dissipation blades to dissipate heat by convection, dissipating heat by heat conduction, or providing a dedicated heat dissipation system.

[0156] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, in order to ensure that the first pawl 1 is disengaged from the first friction wheel 8, the clutch provided with the magnetic cam has a certain rotation angle tolerance: within a certain angle range, due to the certain discontinuity of the magnetic force between multiple magnets (or angular intervals, or similar magnetic toothing effects, resulting in the first magnetic cam 5 having a stable magnetic interaction with the first friction wheel 8 at several angle positions), or due to the certain discontinuity of the magnetic force between multiple magnets and multiple magnetic material components, even if the first magnetic cam 5 rotates a certain angle relative to the first pawl seat 4 under the action of discontinuous magnetic force, the first pawl 1 is still disengaged from the first friction wheel 8. By increasing the interval angle between the first limited angle and the second limited angle (such as Figures 17-24 As shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Optionally, by reducing the spacing angle of the magnets and magnetic material components (i.e., increasing the number of magnets and magnetic material components arranged in the circumferential direction as shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Figure 19 As shown), thereby reducing the rotation angle of the first magnetic cam 5 relative to the first pawl seat 4 caused by the discontinuous magnetic force (so that the rotation angle tolerance requirement of the clutch provided with the magnetic cam can be reduced within a certain range).

[0157] Similar to Example 1, optionally, when the interaction between the first magnetic cam 5 and the first friction wheel 8 is within a certain range, the clutch provided with a magnetic cam can be used as a clutch; under certain conditions, when the interaction between the first magnetic cam 5 and the first friction wheel 8 through magnetic force exceeds a certain range, the clutch provided with a magnetic cam can be used as a magnetic coupling with multiple functions.

[0158] Example 4

[0159] A clutch with a magnetic cam, such as Figures 25-32 As shown, it includes a first pawl 1, a first friction wheel 8, a first return spring 3, a first pawl seat 4, a first magnetic cam 5, and a first bearing 30. The first friction wheel 8 includes a first friction wheel bracket 81, a first friction wheel cover 82, and a first friction wheel magnet 83; the first magnetic cam 5 includes a first magnetic cam bracket 51, a second magnetic cam bracket 52, and a first magnetic cam magnet 50.

[0160] like Figure 26 as well as Figure 30 As shown, the first magnetic cam magnet 50 is fixedly connected to the first magnetic cam bracket 51. Under the action of the riveted boss 31 of the first pawl 1, the first magnetic cam bracket 51 and the second magnetic cam bracket 52 are connected to each other.

[0161] The first friction wheel 8 and the first magnetic cam 5 are coaxially arranged with the first pawl seat 4. The first friction wheel 8 and the first pawl seat 4 are each connected to external components (not shown, excluding the components of the clutch with the magnetic cam) via splines. Optionally, to ensure a certain degree of coaxiality between the first friction wheel 8 and the first pawl seat 4, the first friction wheel 8 can be rotatably mounted on the first pawl seat 4 via a bearing.

[0162] The first magnetic cam 5 is rotatably mounted on the first pawl seat 4 via a clearance fit in the shaft hole. Optionally, to reduce the frictional resistance of the first magnetic cam 5, the first magnetic cam 5 can also be rotatably mounted on the first pawl seat 4 via a bearing. The radial protruding teeth 54 of the first magnetic cam bracket 51 engage with the radial tooth grooves 25 of the first pawl seat 4, thereby allowing the first magnetic cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. The first magnetic cam bracket 51 and the second magnetic cam bracket 52 interact with the first pawl seat 4 through contact, and under the action of the riveted boss 31 of the first pawl 1, the first magnetic cam 5 is axially fixed relative to the first pawl seat 4.

[0163] like Figure 26 as well as Figure 30 As shown, the first friction wheel magnet 83 is fixedly connected to the first friction wheel cover plate 82. The first friction wheel cover plate 82 is mounted on the first friction wheel bracket 81 via an interference fit in the shaft hole. Alternatively, the first friction wheel cover plate 82 and the first friction wheel bracket 81 can be connected to each other using known methods (e.g., a shaft hole transition fit, a spline connection, or a threaded connection).

[0164] like Figure 26 as well as Figure 30 As shown, the first magnetic cam bracket 51 is rotatably mounted on the first friction wheel cover plate 82 via the first bearing 30. Axially, a clearance fit is employed between the first magnetic cam magnet 50 and the first friction wheel magnet 83. Optionally, to enhance magnetic interaction, the number of first magnetic cam magnets 50 and first friction wheel magnets 83 can be increased, or the gap between the first magnetic cam magnet 50 and first friction wheel magnet 83 can be appropriately reduced.

[0165] When the first friction wheel 8 rotates relative to the first magnetic cam 5, the first friction wheel cover 82 drives the first friction wheel magnet 83 to rotate. The first friction wheel magnet 83 drives the first magnetic cam magnet 50 to rotate through magnetic force. In turn, the first magnetic cam magnet 50 drives the first magnetic cam bracket 51 to rotate. In this way, when the first friction wheel 8 rotates relative to the first magnetic cam 5, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle under the action of magnetic force.

[0166] Furthermore, when the first magnetic cam 5 rotates relative to the first pawl seat 4 between the first limited angle and the second limited angle, the first magnetic cam 5 is rotated by means of known techniques (for example, reducing the friction coefficient of each friction surface, providing bearing support, reasonably selecting the materials of the first friction wheel magnet 83 and the first magnetic cam magnet 50, reasonably setting the magnetic field strength of the first friction wheel magnet 83 and the first magnetic cam magnet 50, reasonably designing the axial gap between the first friction wheel magnet 83 and the first magnetic cam magnet 50, reasonably designing the specific structure and size of the first friction wheel magnet 83 and the first magnetic cam magnet 50, or reasonably setting the magnet array of the first friction wheel magnet 83 and the first magnetic cam magnet 50 (such as Figure 27As shown in FIG, the magnetic force between the first friction wheel 8 and the first magnetic cam 5 is greater than the resistance of other components to the first magnetic cam 5. Thus, under the action of the magnetic force, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle.

[0167] Optionally, based on various considerations such as cost-effectiveness, reliability, and operating requirements, the first magnetic cam 5 can also interact with the first friction wheel 8 through magnetic force using known techniques. For example, the first magnetic cam magnet 50 can be replaced with a magnetic material component having a certain magnetic force, or the first friction wheel magnet 83 can be replaced with a magnetic material component having a certain magnetic force, etc.; a magnetic component can be provided on the first friction wheel 8, and a magnetic material component having a certain magnetic force can be provided on the first magnetic cam 5, or a magnetic component can be provided on the first magnetic cam 5, and a magnetic material component having a certain magnetic force can be provided on the first friction wheel 8, etc., so that when the first friction wheel 8 rotates relative to the first magnetic cam 5, the first magnetic cam 5 can rotate relative to the first pawl seat 4 between the first limited angle and the second limited angle under the action of the magnetic force.

[0168] The first return spring 3 has a certain degree of elasticity. It is mounted on the first magnetic cam bracket 51 and connected to the first pawl 1. The first pawl 1 is mounted on the first magnetic cam 5 with a clearance fit in the axial hole. Under the elastic force of the first return spring 3, the first pawl 1 is rotatable relative to the first magnetic cam 5 within a certain angle range. Furthermore, the riveted boss 31 of the first pawl 1 secures the first pawl 1 axially relative to the first magnetic cam 5.

[0169] The first pawl seat 4 interacts with the first pawl 1 through contact. Under the action of magnetic force, the first magnetic cam 5 is rotatable relative to the first pawl seat 4. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the first defined angular position, the first return spring 3, the first pawl 1, and the first magnetic cam 5 selectively engage and disengage the first pawl seat 4 from the first friction wheel 8. At this point, the first pawl seat 4 selectively transmits the power or motion of the first pawl seat 4 to the first friction wheel 8, and vice versa. When the first magnetic cam 5 rotates relative to the first pawl seat 4 to the second defined angular position, the first return spring 3, the first pawl 1, and the first magnetic cam 5 disengage the first pawl 1 from the first friction wheel 8, and the first pawl seat 4 and the first friction wheel 8 are separated.

[0170] Preferably, in the initial state, the first magnetic cam 5 is at the first limited angle position relative to the first pawl seat 4, and the first pawl seat 4 is in an engaged state with the first friction wheel 8. Figures 25-29 At this time, in the reverse rotation direction (opposite to the rotation direction indicated by the arrow in the figure), the first friction wheel 8 is fixed relative to the first pawl seat 4. When the first friction wheel 8 rotates forward relative to the first pawl seat 4 (in the rotation direction indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the second limited angular position under the action of the magnetic force.

[0171] like Figures 31-32 As shown, when the first magnetic cam 5 rotates relative to the first pawl seat 4 to the second limited angular position, the first pawl 1 disengages from the first friction wheel 8, and the first pawl seat 4 and the first friction wheel 8 are separated. The first friction wheel 8 can rotate relative to the first pawl seat 4 in the forward direction (the direction of rotation indicated by the arrow in the figure). When the first friction wheel 8 rotates reversely relative to the first pawl seat 4 (opposite to the direction of rotation indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl seat 4 to the first limited angular position under the action of the magnetic force.

[0172] When the first magnetic cam 5 rotates to the first limited angle position relative to the first pawl seat 4, and when the first friction wheel 8 reverses or has a reverse motion trend relative to the first pawl seat 4, the first pawl seat 4 engages with the first friction wheel 8, and the first friction wheel 8 is fixed relative to the first pawl seat 4 in the reverse direction. Figures 28-29As shown, when the first pawl seat 4 and the first friction wheel 8 are in an engaged state, the first friction wheel 8 is fixed relative to the first pawl seat 4 in the reverse direction.

[0173] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, and when the first friction wheel 8 rotates forward relative to the first pawl seat 4, Figures 31-32 As shown, the first pawl 1 is out of contact with the first friction wheel 8, thereby avoiding or reducing the mechanical friction between the pawl and the ratchet wheel.

[0174] Furthermore, the first magnetic cam 5 interacts with the first friction wheel 8 through magnetic force, thereby avoiding or reducing mechanical friction between the first magnetic cam 5 and the first friction wheel 8 .

[0175] Alternatively, when the first magnetic cam 5 rotates relative to the first friction wheel 8, heat generated due to various reasons can be dissipated using conventional methods, such as adding heat dissipation blades to dissipate heat by convection, dissipating heat by heat conduction, or providing a dedicated heat dissipation system.

[0176] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl seat 4, in order to ensure that the first pawl 1 is disengaged from the first friction wheel 8, the clutch provided with the magnetic cam has a certain rotation angle tolerance: within a certain angle range, due to the certain discontinuity of the magnetic force between multiple magnets (or angular intervals, or similar magnetic toothing effects, resulting in the first magnetic cam 5 having a stable magnetic interaction with the first friction wheel 8 at several angle positions), or due to the certain discontinuity of the magnetic force between multiple magnets and multiple magnetic material components, even if the first magnetic cam 5 rotates a certain angle relative to the first pawl seat 4 under the action of discontinuous magnetic force, the first pawl 1 is still disengaged from the first friction wheel 8. By increasing the interval angle between the first limited angle and the second limited angle (such as Figures 25-32 As shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Optionally, by reducing the spacing angle of the magnets and magnetic material components (i.e., increasing the number of magnets and magnetic material components arranged in the circumferential direction as shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Figure 27 As shown), thereby reducing the rotation angle of the first magnetic cam 5 relative to the first pawl seat 4 caused by the discontinuous magnetic force (so that the rotation angle tolerance requirement of the clutch provided with the magnetic cam can be reduced within a certain range).

[0177] Similar to Example 1, optionally, when the interaction between the first magnetic cam 5 and the first friction wheel 8 is within a certain range, the clutch provided with a magnetic cam can be used as a clutch; under certain conditions, when the interaction between the first magnetic cam 5 and the first friction wheel 8 through magnetic force exceeds a certain range, the clutch provided with a magnetic cam can be used as a magnetic coupling with multiple functions.

[0178] Example 5

[0179] A clutch with a magnetic cam, such as Figures 33-40 As shown, it includes a first pawl 1, a first friction wheel 8, a first return spring 3, a first magnetic cam 5, a first pawl holder 6, and a second friction wheel 9. The first friction wheel 8 includes a first friction wheel bracket 81, a first friction wheel cover plate 82, and a first friction wheel iron block 86; the second friction wheel 9 includes a second friction wheel bracket 91, a second friction wheel cover plate 92, and a second friction wheel iron block 93; the first pawl holder 6 includes a first pawl holding bracket 37, a second pawl holding bracket 38, and a first pawl holding bracket magnet 35; and the first magnetic cam 5 includes a first magnetic cam bracket 51 and a first magnetic cam magnet 50.

[0180] Under the action of the riveting boss 31 of the first pawl 1 , the first pawl holding bracket 37 and the second pawl holding bracket 38 are connected to each other.

[0181] The first friction wheel 8 and the first magnetic cam 5 are coaxially arranged with the second friction wheel 9. The first friction wheel 8 and the second friction wheel 9 are each connected to external components (not shown, excluding the components of the clutch with the magnetic cam) via splines. Optionally, to ensure a certain degree of coaxiality between the first friction wheel 8 and the second friction wheel 9, the first friction wheel 8 can be rotatably mounted on the second friction wheel 9 via a bearing.

[0182] The first magnetic cam magnet 50 is fixedly connected to the first magnetic cam bracket 51. The axial boss 36 of the first magnetic cam 5 is fitted with the first pawl holder 6 through a shaft hole clearance, so that the first magnetic cam 5 can be rotatably set on the first pawl holder 6. Optionally, to reduce the friction resistance of the first magnetic cam 5, the first magnetic cam 5 can also be rotatably set on the first pawl holder 6 through a bearing. The axial boss 36 of the first magnetic cam 5 is fitted with the radial protrusion 39 of the first pawl holder 37, so that the first magnetic cam 5 can rotate relative to the first pawl holder 6 between a first limited angle and a second limited angle. And under the action of the riveted boss 31 of the first pawl 1, the first pawl holder 6 is fixed axially relative to the second friction wheel 9.

[0183] The material of the first friction wheel iron block 86 is a magnetic material with a certain magnetic force (such as pure iron, or alloy steel, etc.). The material of the second friction wheel iron block 93 is a magnetic material with a certain magnetic force (such as pure iron, or alloy steel, etc.). Figure 34 As well as Figure 38 As shown, the first friction wheel cover plate 82 is set on the first friction wheel bracket 81 through an interference fit of the shaft hole, and the second friction wheel cover plate 92 is set on the second friction wheel bracket 91 through an interference fit of the shaft hole, and the first pawl holding bracket magnet 35 and the first pawl holding bracket 37 are fixedly connected.

[0184] Optionally, the second friction wheel cover plate 92 can also be rotatably mounted on the first magnetic cam bracket 51 by means of a bearing or shaft hole clearance fit. Optionally, the first friction wheel cover plate 82 can also be rotatably mounted on the first pawl holding bracket 37 by means of a bearing or shaft hole clearance fit.

[0185] like Figure 34 As well as Figure 38As shown, in the axial direction, a clearance fit is employed between the first magnetic cam magnet 50 and the second friction wheel iron block 93, and a clearance fit is employed between the first pawl retaining bracket magnet 35 and the first friction wheel iron block 86. Thus, when the first friction wheel 8 rotates relative to the second friction wheel 9, the first magnetic cam 5 can rotate relative to the first pawl retaining bracket 6 between the first and second defined angles under the action of magnetic force. Optionally, to enhance magnetic interaction, the number of the first magnetic cam magnet 50, the second friction wheel iron block 93, the first pawl retaining bracket magnet 35, and the first friction wheel iron block 86 can be increased, or the clearance between the first magnetic cam magnet 50 and the second friction wheel iron block 93 can be appropriately reduced, or the clearance between the first pawl retaining bracket magnet 35 and the first friction wheel iron block 86 can be appropriately reduced.

[0186] Optionally, based on various considerations such as cost-effectiveness, reliability, and operating requirements, the first magnetic cam 5 may interact with the second friction wheel 9 through magnetic force, and the first pawl holder 6 may interact with the first friction wheel 8 through magnetic force, using known methods. For example, a magnet component may be provided on the second friction wheel 9 or the first friction wheel 8, or a magnetic material component with a certain magnetic force may be provided on the first magnetic cam 5 or the first pawl holder 6. This allows the first magnetic cam 5 to rotate relative to the first pawl holder 6 between the first and second limited angles under the action of the magnetic force when the first friction wheel 8 rotates relative to the second friction wheel 9.

[0187] The first return spring 3 has a certain degree of elasticity and is mounted on the first pawl retaining bracket 37. Under the elastic force of the first return spring 3, the first pawl 1 is mounted on the first pawl retaining bracket 6 with a clearance fit within the shaft hole. Within a certain angular range, the first pawl 1 is rotatable relative to the first pawl retaining bracket 6. The first pawl 1 is axially fixed relative to the first pawl retaining bracket 6 by the riveted boss 31 of the first pawl 1.

[0188] The first magnetic cam 5 interacts with the first pawl 1 through contact. When the first magnetic cam 5 rotates to the first defined angular position relative to the first pawl holder 6, the first return spring 3, the first pawl 1, and the first magnetic cam 5 selectively engage and disengage the second friction wheel 9 from the first friction wheel 8. At this point, the second friction wheel 9 selectively transmits its power or motion to the first friction wheel 8, and vice versa. When the first magnetic cam 5 rotates to the second defined angular position relative to the first pawl holder 6, the first pawl 1 disengages from the first friction wheel 8 and the second friction wheel 9, respectively, under the action of the first return spring 3, the first pawl 1, and the first magnetic cam 5. The second friction wheel 9 and the first friction wheel 8 are separated.

[0189] Preferably, in the initial state, the first magnetic cam 5 is at the first limited angular position relative to the first pawl holder 6, and the second friction wheel 9 is in an engaged state with the first friction wheel 8, as shown in FIG. Figures 33-37 At this time, in the reverse direction (opposite to the direction of rotation indicated by the arrow in the figure), the first friction wheel 8 is fixed relative to the second friction wheel 9. When the first friction wheel 8 rotates forward relative to the second friction wheel 9 (in the direction of rotation indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl holder 6 to the second limited angular position under the action of the magnetic force.

[0190] like Figures 39-40 As shown, when the first magnetic cam 5 rotates relative to the first pawl holder 6 to the second defined angular position, the first pawl 1 disengages from the first friction wheel 8, and the first pawl 1 disengages from the second friction wheel 9. The second friction wheel 9 is separated from the first friction wheel 8, and the first friction wheel 8 can rotate relative to the second friction wheel 9 in the forward direction (the direction of rotation indicated by the arrow in the figure). When the first friction wheel 8 rotates counterclockwise relative to the second friction wheel 9 (opposite to the direction of rotation indicated by the arrow in the figure), the first magnetic cam 5 can rotate relative to the first pawl holder 6 to the first defined angular position under the action of the magnetic force.

[0191] When the first magnetic cam 5 rotates to the first limited angular position relative to the first pawl holder 6, and when the first friction wheel 8 reverses or has a reverse motion trend relative to the second friction wheel 9, the second friction wheel 9 engages with the first friction wheel 8, and the first friction wheel 8 is fixed relative to the second friction wheel 9 in the reverse direction. Figures 36-37 As shown, when the second friction wheel 9 is in an engaged state with the first friction wheel 8 , the first friction wheel 8 is fixed relative to the second friction wheel 9 in the reverse direction.

[0192] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl holder 6, and when the first friction wheel 8 rotates forward relative to the second friction wheel 9, Figures 39-40 As shown, the first pawl 1 is disengaged from the first friction wheel 8 , and the first pawl 1 is disengaged from the second friction wheel 9 , thereby avoiding or reducing the mechanical friction between the pawl and the ratchet wheel.

[0193] Furthermore, the first magnetic cam 5 interacts with the second friction wheel 9 through magnetic force, thereby avoiding or reducing mechanical friction between the first magnetic cam 5 and the second friction wheel 9. The first pawl holder 6 interacts with the first friction wheel 8 through magnetic force, thereby avoiding or reducing mechanical friction between the first pawl holder 6 and the first friction wheel 8.

[0194] Alternatively, when the first friction wheel cover plate 82 and the second friction wheel cover plate 92 rotate, heat generated due to various reasons can be dissipated using existing methods, such as adding heat dissipation blades to dissipate heat by convection, dissipating heat by heat conduction, or providing a dedicated heat dissipation system.

[0195] When the first magnetic cam 5 rotates to the second limited angle position relative to the first pawl holder 6, in order to ensure that the first pawl 1 is out of contact with both the first friction wheel 8 and the second friction wheel 9, the clutch provided with the magnetic cam has a certain rotation angle tolerance: within a certain angle range, due to the certain discontinuity of the magnetic force between multiple magnets (or angular intervals, or similar magnetic toothing effects, the first magnetic cam 5 has a stable magnetic interaction with the second friction wheel 9 at several angle positions, and similarly the first pawl holder 6 has a stable magnetic interaction with the first friction wheel 8 at several angle positions), or due to the certain discontinuity of the magnetic force between multiple magnets and multiple magnetic material components, even if the first magnetic cam 5 rotates a certain angle relative to the first pawl holder 6 under the action of discontinuous magnetic force, the first pawl 1 still disengages from both the first friction wheel 8 and the second friction wheel 9. By increasing the interval angle between the first limited angle and the second limited angle (such as Figures 33-40As shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Optionally, by reducing the spacing angle of the magnets and magnetic material components (i.e., increasing the number of magnets and magnetic material components arranged in the circumferential direction as shown), the clutch provided with the magnetic cam has a certain rotation angle tolerance. Figure 35 As shown), thereby reducing the rotation angle of the first magnetic cam 5 relative to the first pawl retainer 6 caused by the discontinuous magnetic force (so that the rotation angle tolerance requirement of the clutch provided with the magnetic cam can be reduced within a certain range).

[0196] Similar to Example 1, optionally, the clutch provided with a magnetic cam can be used as a clutch under certain conditions. When the interaction between the first magnetic cam 5 and the second friction wheel 9 through magnetic force exceeds a certain range, and the interaction between the first pawl retainer 6 and the first friction wheel 8 through magnetic force exceeds a certain range, the clutch provided with a magnetic cam can be used as a magnetic coupling with multiple functions.

[0197] Optionally, in this embodiment, when the first friction wheel 8 is replaced by the first ratchet 2, and when the second friction wheel 9 is replaced by the second ratchet, and when the second ratchet is selectively clutched with the first ratchet 2 through the first pawl 1, the corresponding technical solution is also feasible (for details, please refer to the Chinese invention patent application number 2021100587947).

[0198] It should be noted that the above embodiments are illustrative rather than limiting of the present invention, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. Therefore, the embodiments should be considered illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description. Therefore, it is intended that all variations that fall within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference signs in the claims should not be construed as limiting the claims to which they relate. In the claims, the word "comprising" does not exclude the presence of data, steps, or components not listed in the claims.

[0199] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method includes only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A clutch having a magnetic cam, for connecting at least two components of a machine, device, transmission system, or mechanism, and / or for selectively achieving a clutching function of the connected moving parts, and / or for selectively achieving a braking function of the connected moving parts, characterized in that: The clutch provided with a magnetic cam comprises: a magnetic cam, an active semi-clutch, a passive semi-clutch, and a coupling member; and / or The magnetic cam interacts directly or indirectly with the passive half-clutch or the active half-clutch via magnetic force; and / or When the magnetic cam interacts with the passive half-clutch directly or indirectly through magnetic force, and when the passive half-clutch rotates relative to the magnetic cam, the magnetic cam can rotate relative to the active half-clutch under the action of the magnetic force; and / or When the magnetic cam interacts with the active half-clutch directly or indirectly through magnetic force, and when the active half-clutch rotates relative to the magnetic cam, the magnetic cam can rotate relative to the passive half-clutch under the action of the magnetic force; and / or The magnetic cam is directly or indirectly connected to the engaging member; and / or Under the direct or indirect action of the magnetic cam, the active half-clutch and the passive half-clutch are selectively engaged and disengaged through the engagement member; and / or In the disengaged state, the clutch provided with the magnetic cam has a certain rotation angle tolerance; and / or The active half-clutch and the passive half-clutch are respectively connected to parts of the machine, or the active half-clutch and the passive half-clutch are respectively connected to parts of the device, or the active half-clutch and the passive half-clutch are respectively connected to parts of the transmission system, or the active half-clutch and the passive half-clutch are respectively connected to parts of the mechanism.

2. The clutch with a magnetic cam according to claim 1, wherein: The clutch provided with a magnetic cam further comprises a return spring; and / or The active semi-clutch comprises a pawl seat, the passive semi-clutch comprises a ratchet wheel, and the engaging member comprises a pawl; and / or The magnetic cam is directly or indirectly arranged on the pawl seat, or the magnetic cam is directly or indirectly arranged on the ratchet wheel; and / or The magnetic cam interacts with the ratchet wheel or the pawl seat directly or indirectly through magnetic force; and / or When the magnetic cam is directly or indirectly arranged on the pawl seat, when the magnetic cam interacts with the ratchet directly or indirectly through magnetic force, and when the ratchet rotates relative to the magnetic cam, the magnetic cam can rotate relative to the pawl seat within a certain angle range under the action of the magnetic force; and / or When the magnetic cam is directly or indirectly arranged on the ratchet wheel, when the magnetic cam interacts with the pawl seat directly or indirectly through magnetic force, and when the pawl seat rotates relative to the magnetic cam, the magnetic cam can rotate relative to the ratchet wheel within a certain angle range under the action of the magnetic force; and / or The return spring is directly or indirectly connected to the pawl; and / or When the magnetic cam is directly or indirectly provided on the pawl seat, the pawl is directly or indirectly provided on the pawl seat, the magnetic cam is directly or indirectly connected to the pawl, and the pawl is rotatable relative to the pawl seat within a certain angle range, or the pawl is directly or indirectly provided on the magnetic cam, the pawl seat is directly or indirectly connected to the pawl, and the pawl is rotatable relative to the magnetic cam within a certain angle range; and / or When the magnetic cam is directly or indirectly provided on the ratchet wheel, the pawl is directly or indirectly provided on the pawl seat, the magnetic cam is directly or indirectly connected to the pawl, and the pawl is rotatable relative to the pawl seat within a certain angle range; and / or Under the direct or indirect action of the magnetic cam, the return spring and the pawl, the pawl seat and the ratchet wheel are selectively engaged or disengaged; and / or The pawl seat and the ratchet are respectively connected to parts of the machine, or the pawl seat and the ratchet are respectively connected to parts of the device, or the pawl seat and the ratchet are respectively connected to parts of the transmission system, or the pawl seat and the ratchet are respectively connected to parts of the mechanism.

3. The clutch with a magnetic cam according to claim 2, wherein: The pawl comprises at least a first pawl (1); and / or The ratchet comprises at least a first ratchet (2); and / or The return spring comprises at least a first return spring (3); and / or The pawl seat at least comprises a first pawl seat (4); and / or The magnetic cam comprises at least a first magnetic cam (5); and / or The first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), the first magnetic cam (5) interacts with the first ratchet (2) directly or indirectly through magnetic force, and when the first ratchet (2) rotates relative to the first magnetic cam (5), under the action of magnetic force, the first magnetic cam (5) is rotatable relative to the first pawl seat (4) between a first limited angle and a second limited angle, or the first magnetic cam (5) is directly or indirectly arranged on the first ratchet (2), the first magnetic cam (5) interacts with the first pawl seat (4) directly or indirectly through magnetic force, and when the first ratchet seat (4) rotates relative to the first magnetic cam (5), under the action of magnetic force, the first magnetic cam (5) is rotatable relative to the first ratchet (2) between a first limited angle and a second limited angle; and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl (1) is directly or indirectly arranged on the first pawl seat (4), the first magnetic cam (5) is directly or indirectly connected to the first pawl (1), and the first pawl (1) is rotatable relative to the first pawl seat (4) within a certain angle range; and / or When the first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), when the first magnetic cam (5) rotates to the first limited angle position relative to the first pawl seat (4), or when the first magnetic cam (5) is directly or indirectly arranged on the first ratchet (2), when the first magnetic cam (5) rotates to the first limited angle position relative to the first ratchet (2), under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1), the first pawl seat (4) and the first ratchet (2) are selectively engaged; and / or When the first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), when the first magnetic cam (5) rotates to the second limited angle position relative to the first pawl seat (4), or when the first magnetic cam (5) is directly or indirectly arranged on the first ratchet (2), when the first magnetic cam (5) rotates to the second limited angle position relative to the first ratchet (2), under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1), the first pawl seat (4) and the first ratchet (2) are in a separated state; and / or When the first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), when the first magnetic cam (5) rotates to the second limited angle position relative to the first pawl seat (4), or when the first magnetic cam (5) is directly or indirectly arranged on the first ratchet (2), when the first magnetic cam (5) rotates to the second limited angle position relative to the first ratchet (2), under the direct or indirect action of the first pawl seat (4), the first magnetic cam (5), the first return spring (3) and the first pawl (1), or under the direct or indirect action of the first ratchet (2), the first magnetic cam (5), the first return spring (3) and the first pawl (1), the clutch provided with the magnetic cam has a certain rotation angle tolerance; and / or The first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the machine, or the first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the device, or the first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the transmission system, or the first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the mechanism; and / or The first pawl (1) comprises at least one or more parts; and / or The first ratchet (2) comprises at least one or more parts; and / or The first return spring (3) comprises at least one or more parts; and / or The first pawl seat (4) comprises at least one or more parts; and / or The first magnetic cam (5) comprises at least one or more parts.

4. The clutch with a magnetic cam according to claim 2, wherein: The pawl comprises at least a first pawl (1); and / or The ratchet comprises at least a first ratchet (2); and / or The return spring comprises at least a first return spring (3); and / or The pawl seat at least comprises a first pawl seat (4); and / or The magnetic cam comprises at least a first magnetic cam (5); and / or The first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), the first magnetic cam (5) interacts with the first ratchet (2) directly or indirectly through magnetic force, and when the first ratchet (2) rotates relative to the first magnetic cam (5), under the action of the magnetic force, the first magnetic cam (5) is rotatable relative to the first pawl seat (4) between a first limited angle and a second limited angle; and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl (1) is directly or indirectly arranged on the first magnetic cam (5), the first pawl seat (4) is directly or indirectly connected to the first pawl (1), and the first pawl (1) is rotatable relative to the first magnetic cam (5) within a certain angle range; and / or When the first magnetic cam (5) rotates to the first limited angular position relative to the first pawl seat (4), the first pawl seat (4) is selectively engaged with the first ratchet wheel (2) under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl seat (4), the first pawl seat (4) and the first ratchet (2) are in a separated state under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl seat (4), the clutch provided with the magnetic cam has a certain rotation angle tolerance under the direct or indirect action of the first pawl seat (4), the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or The first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the machine, or the first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the device, or the first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the transmission system, or the first ratchet (2) and the first pawl seat (4) are respectively connected to parts of the mechanism; and / or The first pawl (1) comprises at least one or more parts; and / or The first ratchet (2) comprises at least one or more parts; and / or The first return spring (3) comprises at least one or more parts; and / or The first pawl seat (4) comprises at least one or more parts; and / or The first magnetic cam (5) comprises at least one or more parts.

5. The clutch with a magnetic cam according to claim 1, wherein: The clutch provided with a magnetic cam further comprises a first return spring (3); and / or The active semi-clutch includes a first pawl seat (4), the passive semi-clutch includes a first friction wheel (8), the engaging member includes a first pawl (1), and the magnetic cam includes a first magnetic cam (5); and / or The first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), the first magnetic cam (5) interacts with the first friction wheel (8) directly or indirectly through magnetic force, and when the first friction wheel (8) rotates relative to the first magnetic cam (5), under the action of the magnetic force, the first magnetic cam (5) is rotatable relative to the first pawl seat (4) between a first limited angle and a second limited angle; and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl (1) is directly or indirectly arranged on the first pawl seat (4), the first magnetic cam (5) is directly or indirectly connected to the first pawl (1), and the first pawl (1) is rotatable relative to the first pawl seat (4) within a certain angle range; and / or When the first magnetic cam (5) rotates to the first limited angular position relative to the first pawl seat (4), the first pawl seat (4) is selectively engaged with the first friction wheel (8) under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl seat (4), the first pawl seat (4) and the first friction wheel (8) are in a separated state under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl seat (4), the clutch provided with the magnetic cam has a certain rotation angle tolerance under the direct or indirect action of the first pawl seat (4), the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or The first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the machine, or the first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the device, or the first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the transmission system, or the first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the mechanism; and / or The first pawl (1) comprises at least one or more parts; and / or The first return spring (3) comprises at least one or more parts; and / or The first pawl seat (4) comprises at least one or more parts; and / or The first magnetic cam (5) comprises at least one or more parts; and / or The first friction wheel (8) comprises at least one or more parts.

6. The clutch with a magnetic cam according to claim 1, wherein: The clutch provided with a magnetic cam further comprises a first return spring (3); and / or The active semi-clutch includes a first pawl seat (4), the passive semi-clutch includes a first friction wheel (8), the engaging member includes a first pawl (1), and the magnetic cam includes a first magnetic cam (5); and / or The first magnetic cam (5) is directly or indirectly arranged on the first pawl seat (4), the first magnetic cam (5) interacts with the first friction wheel (8) directly or indirectly through magnetic force, and when the first friction wheel (8) rotates relative to the first magnetic cam (5), under the action of the magnetic force, the first magnetic cam (5) is rotatable relative to the first pawl seat (4) between a first limited angle and a second limited angle; and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl (1) is directly or indirectly arranged on the first magnetic cam (5), the first pawl seat (4) is directly or indirectly connected to the first pawl (1), and the first pawl (1) is rotatable relative to the first magnetic cam (5) within a certain angle range; and / or When the first magnetic cam (5) rotates to the first limited angular position relative to the first pawl seat (4), the first pawl seat (4) is selectively engaged with the first friction wheel (8) under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl seat (4), the first pawl seat (4) and the first friction wheel (8) are in a separated state under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl seat (4), the clutch provided with the magnetic cam has a certain rotation angle tolerance under the direct or indirect action of the first pawl seat (4), the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or The first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the machine, or the first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the device, or the first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the transmission system, or the first friction wheel (8) and the first pawl seat (4) are respectively connected to parts of the mechanism; and / or The first pawl (1) comprises at least one or more parts; and / or The first return spring (3) comprises at least one or more parts; and / or The first pawl seat (4) comprises at least one or more parts; and / or The first magnetic cam (5) comprises at least one or more parts; and / or The first friction wheel (8) comprises at least one or more parts.

7. The clutch with a magnetic cam according to claim 1, wherein: The clutch provided with a magnetic cam further comprises a first return spring (3), a first pawl retainer (6); and / or The active semi-clutch includes a second ratchet, the passive semi-clutch includes a first ratchet (2), the engaging member includes a first pawl (1), and the magnetic cam includes a first magnetic cam (5); and / or The first pawl holder (6) is connected to the first ratchet (2) through a shaft hole clearance fit or a bearing, and the first pawl holder (6) is rotatable relative to the first ratchet (2), or the first pawl holder (6) is connected to the second ratchet through a shaft hole clearance fit or a bearing, and the first pawl holder (6) is rotatable relative to the second ratchet; and / or The first magnetic cam (5) is rotatably arranged on the first pawl holder (6) through a shaft hole clearance fit, or the first magnetic cam (5) is rotatably arranged on the first pawl holder (6) through a bearing; and / or The first magnetic cam (5) interacts with the second ratchet directly or indirectly through magnetic force, and the first pawl holder (6) interacts with the first ratchet (2) directly or indirectly through magnetic force, or the first magnetic cam (5) interacts with the first ratchet (2) directly or indirectly through magnetic force, and the first pawl holder (6) interacts with the second ratchet directly or indirectly through magnetic force, and when the first ratchet (2) rotates relative to the second ratchet, under the action of magnetic force, the first magnetic cam (5) is rotatable relative to the first pawl holder (6) between a first limited angle and a second limited angle; and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl (1) is directly or indirectly arranged on the first pawl holder (6), the first magnetic cam (5) is directly or indirectly connected to the first pawl (1), and the first pawl (1) is rotatable relative to the first pawl holder (6) within a certain angle range; and / or When the first magnetic cam (5) rotates to the first limited angular position relative to the first pawl holder (6), the second ratchet wheel and the first ratchet wheel (2) are selectively engaged under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl holder (6), the second ratchet wheel and the first ratchet wheel (2) are in a separated state under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or The first ratchet (2) and the second ratchet are respectively connected to parts of the machine, or the first ratchet (2) and the second ratchet are respectively connected to parts of the device, or the first ratchet (2) and the second ratchet are respectively connected to parts of the transmission system, or the first ratchet (2) and the second ratchet are respectively connected to parts of the mechanism; and / or The first pawl (1) comprises at least one or more parts; and / or The first ratchet (2) comprises at least one or more parts; and / or The first return spring (3) comprises at least one or more parts; and / or The first magnetic cam (5) comprises at least one or more parts; and / or The first pawl retainer (6) comprises at least one or more parts; and / or The second ratchet comprises at least one or more parts.

8. The clutch with a magnetic cam according to claim 1, wherein: The clutch provided with a magnetic cam further comprises a first return spring (3), a first pawl retainer (6); and / or The active semi-clutch includes a second friction wheel (9), the passive semi-clutch includes a first friction wheel (8), the engaging member includes a first pawl (1), and the magnetic cam includes a first magnetic cam (5); and / or The first pawl holder (6) is connected to the first friction wheel (8) through a shaft hole clearance fit or a bearing, and the first pawl holder (6) is rotatable relative to the first friction wheel (8), or the first pawl holder (6) is connected to the second friction wheel (9) through a shaft hole clearance fit or a bearing, and the first pawl holder (6) is rotatable relative to the second friction wheel (9); and / or The first magnetic cam (5) is rotatably arranged on the first pawl holder (6) through a shaft hole clearance fit, or the first magnetic cam (5) is rotatably arranged on the first pawl holder (6) through a bearing; and / or The first magnetic cam (5) interacts with the second friction wheel (9) directly or indirectly through magnetic force, and the first pawl holder (6) interacts with the first friction wheel (8) directly or indirectly through magnetic force, or the first magnetic cam (5) interacts with the first friction wheel (8) directly or indirectly through magnetic force, and the first pawl holder (6) interacts with the second friction wheel (9) directly or indirectly through magnetic force, and when the first friction wheel (8) rotates relative to the second friction wheel (9), under the action of magnetic force, the first magnetic cam (5) is rotatable relative to the first pawl holder (6) between a first limited angle and a second limited angle; and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl (1) is directly or indirectly arranged on the first pawl holder (6), the first magnetic cam (5) is directly or indirectly connected to the first pawl (1), and the first pawl (1) is rotatable relative to the first pawl holder (6) within a certain angle range; and / or When the first magnetic cam (5) rotates to the first limited angular position relative to the first pawl holder (6), the second friction wheel (9) is selectively engaged with the first friction wheel (8) under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angle position relative to the first pawl holder (6), the second friction wheel (9) and the first friction wheel (8) are in a separated state under the direct or indirect action of the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or When the first magnetic cam (5) rotates to the second limited angular position relative to the first pawl holder (6), the clutch provided with the magnetic cam has a certain rotation angle tolerance under the direct or indirect action of the first pawl holder (6), the first magnetic cam (5), the first return spring (3) and the first pawl (1); and / or The first friction wheel (8) and the second friction wheel (9) are respectively connected to parts of the machine, or the first friction wheel (8) and the second friction wheel (9) are respectively connected to parts of the device, or the first friction wheel (8) and the second friction wheel (9) are respectively connected to parts of the transmission system, or the first friction wheel (8) and the second friction wheel (9) are respectively connected to parts of the mechanism; and / or The first pawl (1) comprises at least one or more parts; and / or The first return spring (3) comprises at least one or more parts; and / or The first magnetic cam (5) comprises at least one or more parts; and / or The first friction wheel (8) comprises at least one or more parts; and / or The second friction wheel (9) comprises at least one or more parts.

9. The clutch with a magnetic cam according to any one of claims 3 to 8, characterized in that: When the magnetic cam is directly or indirectly arranged on the active half-clutch, when the magnetic cam rotates to the first limited angular position relative to the active half-clutch, the active half-clutch has a certain angular positioning effect on the magnetic cam; and / or When the magnetic cam is directly or indirectly arranged on the active half-clutch, when the magnetic cam rotates to the second limited angular position relative to the active half-clutch, the active half-clutch has a certain angular positioning effect on the magnetic cam; and / or When the magnetic cam is directly or indirectly arranged on the passive semi-clutch, when the magnetic cam rotates to the first limited angular position relative to the passive semi-clutch, the passive semi-clutch has a certain angular positioning effect on the magnetic cam; and / or When the magnetic cam is directly or indirectly arranged on the passive semi-clutch, when the magnetic cam rotates to the second limited angular position relative to the passive semi-clutch, the passive semi-clutch has a certain angular positioning effect on the magnetic cam; and / or When the magnetic cam is directly or indirectly arranged on the first pawl holder (6), and when the magnetic cam rotates to the first limited angular position relative to the first pawl holder (6), the first pawl holder (6) has a certain angular positioning effect on the magnetic cam; and / or When the magnetic cam is directly or indirectly arranged on the first pawl holder (6), and when the magnetic cam rotates to the second limited angular position relative to the first pawl holder (6), the first pawl holder (6) has a certain angular positioning effect on the magnetic cam; and / or When the magnetic cam is directly or indirectly provided on the active half-clutch, the magnetic cam is rotatably provided on the active half-clutch through a shaft hole clearance fit, or the magnetic cam is rotatably provided on the active half-clutch through a bearing; and / or When the magnetic cam is directly or indirectly provided on the passive semi-clutch, the magnetic cam is rotatably provided on the passive semi-clutch through a shaft hole clearance fit, or the magnetic cam is rotatably provided on the passive semi-clutch through a bearing; and / or When the pawl is directly or indirectly provided on the active semi-clutch, the pawl is rotatably provided on the active semi-clutch directly or indirectly through a shaft hole clearance fit, or the pawl is rotatably provided on the active semi-clutch directly or indirectly through a bearing; and / or When the pawl is directly or indirectly provided on the magnetic cam, the pawl is rotatably provided on the magnetic cam directly or indirectly through a shaft hole clearance fit, or the pawl is rotatably provided on the magnetic cam directly or indirectly through a bearing; and / or When the pawl is directly or indirectly arranged on the first pawl holder (6), the pawl is rotatably arranged on the first pawl holder (6) directly or indirectly through shaft hole clearance fit, or the pawl is rotatably arranged on the first pawl holder (6) directly or indirectly through a bearing.

10. A magnetic coupling, characterized in that: The magnetic coupling uses a clutch provided with a magnetic cam as claimed in any one of claims 1 to 9 to realize the coupling function; and / or The magnetic coupling is selectively locked between the active half-clutch and the passive half-clutch by speed control or direction control of the active half-clutch or by speed control or direction control of the passive half-clutch.

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