Friction-actuated friction clutch

Abstract

The invention provides a friction actuating type friction clutch which is mainly applied to the technical field of transmission, in particular to the technical field of friction clutches. The friction actuating type friction clutch at least comprises a pawl, a friction wheel, a return spring, a pawl seat and a friction cam. Under the direct or indirect friction action of parts of the friction actuating type friction clutch, the pawl and the friction wheel are selectively separated and combined, and the pawl and the friction wheel are selectively separated from each other. Compared with the prior art, the friction-actuated friction clutch can reduce the wear of the pawls.

Description

Technical Field

[0001] This invention relates to a friction-actuated friction clutch, primarily used in the field of transmission technology. Background Technology

[0002] Friction clutches selectively engage various power or motion actions using the friction between their engaging elements. Compared to conventional ratchet clutches, friction clutches typically offer advantages such as compact structure, smooth engagement, and low operating noise. Friction clutches can engage and disengage automatically or with the aid of external actuators. When a friction clutch operates in the disengaged or overrunning state, especially when used as an overrunning clutch, one-way clutch, or one-way brake, the engaging elements wear continuously through mutual contact under the action of springs. This wear is particularly rapid during high-speed operation in the disengaged or overrunning state. Wear of the engaging elements can lead to a decrease in the clutch's engagement performance and even premature failure. Therefore, how to selectively disengage the engaging elements when needed is a pressing technical problem to be solved in the field of friction clutches. Summary of the Invention

[0003] To address the aforementioned technical problems existing in friction clutches, this invention aims to provide a friction-actuated friction clutch. The friction-actuated friction clutch is used to connect at least two components of a machine, device, transmission system, or mechanism, and / or to selectively engage or disengage the power or motion of the connected moving parts using the interaction between the pawl and the friction wheel, and / or to selectively decelerate, stop, or maintain a stopped state of the connected moving parts using the interaction between the pawl and the friction wheel.

[0004] This invention is achieved through the following scheme:

[0005] The friction-actuated friction clutch includes: a pawl, a friction wheel, a return spring, a pawl seat, and a friction cam. The pawl is mounted on the pawl seat and is rotatable relative to the pawl seat within a certain angle range. Alternatively, the pawl is mounted on the friction cam and is rotatable relative to the friction cam within a certain angle range. The friction cam is mounted on the pawl seat and is rotatable relative to the pawl seat within a certain angle range. The friction cam is connected to the pawl, or the pawl seat is connected to the pawl. The return spring is connected to the pawl. Under the frictional action of the components of the friction-actuated friction clutch, the pawl and the friction wheel selectively disengage. Under the frictional action of the components of the friction-actuated friction clutch, the pawl and the friction wheel selectively engage. The friction wheel and the pawl seat are respectively connected to external components (the external components refer to components excluding the components of the friction-actuated friction clutch).

[0006] Further, the pawl includes a first pawl 1. The friction wheel includes a first friction wheel 2. The return spring includes a first return spring 3. The pawl seat includes a first pawl seat 4. The friction cam includes a first friction cam 5. The first pawl 1 is disposed on the first pawl seat 4, and the first pawl 1 is rotatable relative to the first pawl seat 4 within a certain angle range. The first friction cam 5 is disposed on the first pawl seat 4, and the first friction cam 5 is rotatable relative to the first pawl seat 4 between a first limited angle and a second limited angle. The first friction cam 5 interacts with the first friction wheel 2 through friction. The first friction cam 5 is connected to the first pawl 1. The first return spring 3 is connected to the first pawl 1. Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 selectively engages and disengages from the first friction wheel 2. Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the first pawl 1 disengages from the first friction wheel 2. The first friction wheel 2 and the first pawl seat 4 are respectively connected to the external components.

[0007] Alternatively, the pawl includes a first pawl 1. The friction wheel includes a first friction wheel 2. The return spring includes a first return spring 3. The pawl seat includes a first pawl seat 4. The friction cam includes a first friction cam 5. The first pawl 1 is disposed on the first friction cam 5, and the first pawl 1 is rotatable relative to the first friction cam 5 within a certain angle range. The first friction cam 5 is disposed on the first pawl seat 4, and the first friction cam 5 is rotatable relative to the first pawl seat 4 between a first limited angle and a second limited angle. The first friction cam 5 interacts with the first friction wheel 2 through friction. The first pawl seat 4 is connected to the first pawl 1. The first return spring 3 is connected to the first pawl 1. Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 selectively engages and disengages from the first friction wheel 2. Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the first pawl 1 disengages from the first friction wheel 2. The first friction wheel 2 and the first pawl seat 4 are respectively connected to the external components.

[0008] Alternatively, the pawl may include a first pawl 1 and a third pawl 15. The friction wheel may include a first friction wheel 2 and a second friction wheel 17. The return spring may include a first return spring 3 and a third return spring 16. The pawl seat may include a first pawl seat 4. The friction cam may include a first friction cam 5. The first pawl 1 is disposed on the first pawl seat 4, and is rotatable relative to the first pawl seat 4 within a certain angle range. The third pawl 15 is disposed on the first pawl seat 4, and is disposed opposite to the first pawl 1, and is rotatable relative to the first pawl seat 4 within a certain angle range. The first friction cam 5 is disposed on the first pawl seat 4, and is rotatable relative to the first pawl seat 4 between a first limited angle and a second limited angle. The first friction cam 5 interacts with the first friction wheel 2 through friction. The first friction cam 5 interacts with the second friction wheel 17 through friction. The first friction cam 5 is connected to the first pawl 1. The first return spring 3 is connected to the first pawl 1. The first friction cam 5 is connected to the third pawl 15. The third return spring 16 is connected to the third pawl 15. Under the friction of the first friction wheel 2 and the second friction wheel 17, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 selectively engages with the first friction wheel 2, and the third pawl 15 disengages from the second friction wheel 17. Under the friction of the first friction wheel 2 and the second friction wheel 17, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the third pawl 15 selectively engages with the second friction wheel 17, and the first pawl 1 disengages from the first friction wheel 2. The first friction wheel 2, the first pawl seat 4, and the second friction wheel 17 are respectively connected to the external components.

[0009] Alternatively, the pawl may include a first pawl 1 and a third pawl 15. The friction wheel may include a first friction wheel 2 and a second friction wheel 17. The return spring may include a first return spring 3 and a third return spring 16. The pawl seat may include a first pawl seat 4. The friction cam may include a first friction cam 5. The first pawl 1 is disposed on the first friction cam 5, and the first pawl 1 is rotatable relative to the first friction cam 5 within a certain angle range. The third pawl 15 is disposed on the first friction cam 5, and the third pawl 15 is disposed opposite to the first pawl 1, and is rotatable relative to the first friction cam 5 within a certain angle range. The first friction cam 5 is disposed on the first pawl seat 4, and is rotatable relative to the first pawl seat 4 between a first limited angle and a second limited angle. The first friction cam 5 interacts with the first friction wheel 2 through friction. The first friction cam 5 interacts with the second friction wheel 17 through friction. The first pawl seat 4 is connected to the first pawl 1. The first return spring 3 is connected to the first pawl 1. The first pawl seat 4 is connected to the third pawl 15. The third return spring 16 is connected to the third pawl 15. Under the friction of the first friction wheel 2 and the second friction wheel 17, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 selectively engages with the first friction wheel 2, and the third pawl 15 disengages from the second friction wheel 17. Under the friction of the first friction wheel 2 and the second friction wheel 17, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the third pawl 15 selectively engages with the second friction wheel 17, and the first pawl 1 disengages from the first friction wheel 2. The first friction wheel 2, the first pawl seat 4, and the second friction wheel 17 are respectively connected to the external components.

[0010] Furthermore, the contact force between the friction cam and the friction wheel originates from the elastic force of the spring.

[0011] Furthermore, when the friction cam rotates relative to the ratchet seat to the first defined angular position, the friction cam and the ratchet seat have an angular positioning function. When the friction cam rotates relative to the ratchet seat to the second defined angular position, the friction cam and the ratchet seat also have an angular positioning function.

[0012] Alternatively, when the friction cam rotates relative to the pawl seat to the first defined angle position, the friction cam and the pawl seat achieve an angle positioning function through a series of bosses and grooves. When the friction cam rotates relative to the pawl seat to the second defined angle position, the friction cam and the pawl seat achieve an angle positioning function through a series of bosses and grooves.

[0013] Alternatively, the friction-actuated friction clutch includes a positioning mechanism 8. When the friction cam rotates relative to the pawl seat to the first defined angle position, the friction cam and the pawl seat achieve angle positioning through the positioning mechanism 8. When the friction cam rotates relative to the pawl seat to the second defined angle position, the friction cam and the pawl seat achieve angle positioning through the positioning mechanism 8.

[0014] Furthermore, the friction cam is mounted on the ratchet seat via a bearing. The friction wheel is connected to the ratchet seat via a bearing.

[0015] Compared with the prior art, the friction-actuated friction clutch of the present invention can reduce the wear of the pawl. The friction-actuated friction clutch of the present invention can selectively disengage the pawl from the friction wheel by utilizing the frictional action of the components, thereby avoiding continuous friction between the pawl and the friction wheel and reducing the wear of the pawl.

[0016] The above-mentioned features and advantages of the invention, as well as other features and advantages, will be readily apparent from the following detailed description of the best mode for carrying out the invention, taken in conjunction with the accompanying drawings. However, it should be clearly understood that all the drawings are for description only and not for any limitation on the definition and scope of the invention. Attached Figure Description

[0017] Figures 1-36The diagrams are schematic representations of embodiments 1 to 6. The markings in the diagrams are as follows: 1-First pawl, 2-First friction wheel, 3-First return spring, 4-First pawl seat, 5-First friction cam, 8-Positioning mechanism, 9-First positioning boss, 10-First positioning groove, 11-Second positioning groove, 12-First cam bearing, 15-Third pawl, 16-Third return spring, 17-Second friction wheel, 19-Radial tooth of the first friction cam 5, 20-Radial tooth groove of the first pawl seat 4, 21-Axial boss of the first pawl seat 4, 22-Radial tooth of the first cam support 51, 2 3-Radial groove of the first friction cam 5, 24-Axial groove of the first cam support 51, 26-Axial groove of the first pawl seat 4, 51-First cam support, 52-Second cam support, 53-First cam spring, 54-Second cam spring, 55-First cam friction pad, 56-Second cam friction pad, 57-First cam rivet, 58-Second cam rivet, 59-Third cam rivet, 61-First friction wheel support, 62-First friction wheel support spring, 63-First friction wheel friction pad, 64-First friction wheel rivet. For ease of description, the rotation direction indicated by the arrows in the figure is the forward rotation direction used in the corresponding embodiment. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the embodiments described. Obviously, what is described is only a part of the preferred embodiments of the present invention, and not all of the embodiments. Those skilled in the art can easily make many changes based on the inventive principles, therefore the present invention is not fixed to the details shown and described, but is intended to include all variations and modifications within the scope of the claims.

[0019] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. The singular forms “a,” “an,” etc., used herein may also be intended to include the plural forms unless the context clearly indicates otherwise. The terms “comprising” and “having” are inclusive and therefore specify the presence of the stated features, integrals, steps, operations, parts, components, parts, and / or assemblies, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, assemblies, and / or combinations thereof. The method steps, procedures, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or described, unless specifically identified as such. It should also be understood that additional or alternative steps may be employed.

[0020] While 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 be used only to distinguish a single part, component, part, assembly, layer, and / or portion. Terms such as “first,” “second,” “third,” and other numerical terms used herein do not imply any order or sequence unless the context clearly indicates otherwise.

[0021] In the embodiments, “axial” refers to the axial direction of the friction-actuated friction clutch, and “radial” refers to the radial direction of the friction-actuated friction clutch, unless the context clearly indicates otherwise.

[0022] Example 1

[0023] Friction-actuated friction clutches, such as Figures 1-6 As shown, the system includes a first pawl 1, a first friction wheel 2, a first return spring 3, a first pawl seat 4, a first friction cam 5, and a first cam bearing 12. The first friction cam 5 includes a first cam support 51, a first cam spring 53, a first cam friction pad 55, and a first cam rivet 57. One end of the first cam spring 53 is fixedly connected to the first cam support 51 via the first cam rivet 57. The other end of the first cam spring 53 is fixedly connected to the first cam friction pad 55. Thus, the first cam support 51, the first cam spring 53, the first cam friction pad 55, and the first cam rivet 57 are interconnected to form a single unit (i.e., the first friction cam 5).

[0024] The first friction wheel 2 and the first friction cam 5 are both arranged coaxially with the first pawl seat 4. The first friction wheel 2 and the first pawl seat 4 are respectively connected to external components (not shown, the external components refer to components excluding the "components of the friction-actuated friction clutch") via splines.

[0025] Preferably, the first friction cam 5 is mounted on the first pawl seat 4 via the first cam bearing 12, and the first friction cam 5 is rotatable relative to the first pawl seat 4. Optionally, the first friction cam 5 can also be mounted on the first pawl seat 4 via a sliding bearing or a clearance fit with a shaft hole. Under the action of the first pawl 1, the first friction cam 5 is fixed axially relative to the first pawl seat 4. The radial protrusion 22 of the first cam support 51 engages with the radial groove 20 of the first pawl seat 4, thereby allowing the first friction cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. Under the elastic action of the first cam spring 53, the first cam friction pad 55 interacts with the first friction wheel 2 through friction. Thus, the first friction wheel 2 interacts with the first friction cam 5 through friction.

[0026] The first pawl 1 is mounted on the first pawl seat 4 via a clearance fit through a shaft hole. The first pawl 1 is rotatable relative to the first pawl seat 4 and is axially fixed relative to the first pawl seat 4 by riveting bosses at both ends. The radial groove 23 of the first friction cam 5 is connected to the first pawl 1. The first return spring 3 is connected to the first pawl 1. The first pawl seat 4 interacts with the first pawl 1 through the first return spring 3 and the clearance fit through the shaft hole.

[0027] Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 and the first friction wheel 2 can be engaged or disengaged under the action of the first return spring 3 and the first friction cam 5. At this time, through the first pawl 1, the first pawl seat 4 can selectively transmit the power or movement of the first pawl seat 4 to the first friction wheel 2. Alternatively, through the first pawl 1, the first friction wheel 2 can selectively transmit the power or movement of the first friction wheel 2 to the first pawl seat 4.

[0028] Under the friction of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the first pawl 1 disengages from the first friction wheel 2 under the action of the first return spring 3 and the first friction cam 5.

[0029] Preferably, in the initial state, the first friction cam 5 is positioned at the first defined angle relative to the first pawl seat 4, such as... Figure 5As shown. At this time, in the reverse direction (opposite to the rotation direction indicated by the arrow in the figure), the first friction wheel 2 is fixed relative to the first pawl seat 4. When the first friction wheel 2 rotates clockwise relative to the first pawl seat 4 (rotation direction indicated by the arrow in the figure), under the friction action of the first friction wheel 2, the first friction cam 5 can rotate relative to the first pawl seat 4 to the second limited angle position.

[0030] like Figure 6 As shown, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second defined angle position, the first pawl 1 disengages from the first friction wheel 2, and the first friction wheel 2 can rotate relative to the first pawl seat 4 in the forward rotation direction (the rotation direction indicated by the arrow in the figure). When the first friction wheel 2 rotates in the reverse direction relative to the first pawl seat 4 (opposite to the rotation direction indicated by the arrow in the figure), under the friction of the first friction wheel 2, the first friction cam 5 can rotate relative to the first pawl seat 4 to the first defined angle position.

[0031] When the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, and when the first friction wheel 2 rotates clockwise relative to the first pawl seat 4, the first pawl 1 disengages from the first friction wheel 2, thereby avoiding frictional contact between the pawl and the friction wheel.

[0032] Example 2

[0033] Friction-actuated friction clutches, such as Figures 7-12As shown, the system includes a first pawl 1, a first friction wheel 2, a first return spring 3, a first pawl seat 4, a first friction cam 5, and a first cam bearing 12. The first friction cam 5 is a single component. The first friction wheel 2 includes a first friction wheel bracket 61, a first friction wheel bracket spring 62, a first friction wheel friction pad 63, and a first friction wheel rivet 64. The radial teeth 19 of the first friction cam 5 engage with the radial grooves 20 of the first pawl seat 4, allowing the first friction cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. One end of the first friction wheel bracket spring 62 is fixedly connected to the first friction wheel bracket 61 via the first friction wheel rivet 64. The other end of the first friction wheel bracket spring 62 is fixedly connected to the first friction wheel friction pad 63. Thus, the first friction wheel bracket 61, the first friction wheel bracket spring 62, the first friction wheel friction pad 63, and the first friction wheel rivet 64 are interconnected to form a single unit (i.e., the first friction wheel 2). Under the elastic action of the first friction wheel bracket spring 62, the first friction wheel friction pad 63 and the first friction cam 5 interact through friction. Thus, the first friction wheel 2 and the first friction cam 5 interact through friction.

[0034] The rest is similar to Example 1.

[0035] Example 3

[0036] Friction-actuated friction clutches, such as Figures 13-17 As shown, the system includes a first pawl 1, a first friction wheel 2, a first return spring 3, a first pawl seat 4, and a first friction cam 5. The first friction cam 5 includes a first cam support 51, a second cam support 52, a first cam spring 53, a second cam spring 54, a first cam friction pad 55, a second cam friction pad 56, a first cam rivet 57, and a second cam rivet 58. One end of the first cam spring 53 is fixedly connected to the first cam support 51 via the first cam rivet 57. The other end of the first cam spring 53 is fixedly connected to the first cam friction pad 55. One end of the second cam spring 54 is fixedly connected to the second cam support 52 via the second cam rivet 58. The other end of the second cam spring 54 is fixedly connected to the second cam friction pad 56. Under the action of the first pawl 1, the first cam support 51, the second cam support 52, the first cam spring 53, the second cam spring 54, the first cam friction pad 55, the second cam friction pad 56, the first cam rivet 57, and the second cam rivet 58 are interconnected to form a whole (i.e., the first friction cam 5).

[0037] The first cam support 51 is provided with a first positioning boss 9, and the first pawl seat 4 is provided with a first positioning groove 10 and a second positioning groove 11. The number of the first positioning boss 9, the first positioning groove 10 and the second positioning groove 11 can be set according to the actual working conditions.

[0038] The first friction wheel 2 and the first friction cam 5 are both arranged coaxially with the first pawl seat 4. The first friction wheel 2 and the first pawl seat 4 are respectively connected to external components (not shown, the external components refer to components excluding the "components of the friction-actuated friction clutch") via splines.

[0039] The first cam support 51 is rotatably mounted on the first pawl seat 4 via a clearance fit through a shaft hole, and under the action of the first pawl 1, the first friction cam 5 is fixed axially relative to the first pawl seat 4. The radial protrusion 22 of the first cam support 51 engages with the radial groove 20 of the first pawl seat 4, thereby allowing the first friction cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. Under the elastic action of the first cam spring 53, the first cam friction pad 55 interacts with the first friction wheel 2 through friction. And under the elastic action of the second cam spring 54, the second cam friction pad 56 interacts with the first friction wheel 2 through friction. Thus, the first friction wheel 2 interacts with the first friction cam 5 through friction.

[0040] The first pawl 1 is mounted on the first friction cam 5 via a clearance fit through a shaft hole. The first pawl 1 is rotatable relative to the first friction cam 5 and is axially fixed relative to the first friction cam 5 by riveted bosses at both ends. The first pawl 1 is connected to the first pawl seat 4 via a contact. The first return spring 3 is connected to the first pawl 1. The first friction cam 5 interacts with the first pawl 1 through the first return spring 3 and the clearance fit through the shaft hole.

[0041] Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 and the first friction wheel 2 can be engaged or disengaged under the action of the first return spring 3 and the first pawl seat 4. At this time, through the first pawl 1, the first pawl seat 4 can selectively transmit the power or movement of the first pawl seat 4 to the first friction wheel 2. Alternatively, through the first pawl 1, the first friction wheel 2 can selectively transmit the power or movement of the first friction wheel 2 to the first pawl seat 4.

[0042] Furthermore, when the first friction cam 5 is at the first defined angle position relative to the first pawl seat 4, the first pawl seat 4 provides a certain angular positioning function for the first friction cam 5 through the interaction between the first positioning boss 9 and the first positioning groove 10. At this time, even with external interference or power impact, the first friction cam 5 remains at the first defined angle position relative to the first pawl seat 4. Therefore, through the interaction between the first positioning boss 9 and the first positioning groove 10, the friction-actuated friction clutch has a certain shifting reliability and stability at the first defined angle position.

[0043] Under the friction of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the first pawl 1 disengages from the first friction wheel 2 under the action of the first return spring 3 and the first pawl seat 4.

[0044] Similarly, when the first friction cam 5 is at the second defined angle position relative to the first pawl seat 4, the first pawl seat 4 provides a certain angular positioning function for the first friction cam 5 through the interaction between the first positioning boss 9 and the second positioning groove 11. At this time, even with external interference or power impact, the first friction cam 5 remains at the second defined angle position relative to the first pawl seat 4. Therefore, through the interaction between the first positioning boss 9 and the second positioning groove 11, the friction-actuated friction clutch has a certain degree of shifting reliability and stability at the second defined angle position.

[0045] Preferably, in the initial state, the first friction cam 5 is positioned at the first defined angle relative to the first pawl seat 4, such as... Figure 16 As shown. At this time, in the reverse direction (opposite to the rotation direction indicated by the arrow in the figure), the first friction wheel 2 is fixed relative to the first pawl seat 4. When the first friction wheel 2 rotates clockwise relative to the first pawl seat 4 (rotation direction indicated by the arrow in the figure), under the friction action of the first friction wheel 2, the first friction cam 5 can rotate relative to the first pawl seat 4 to the second limited angle position.

[0046] like Figure 17As shown, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second defined angle position, the first pawl 1 disengages from the first friction wheel 2, and the first friction wheel 2 can rotate relative to the first pawl seat 4 in the forward rotation direction (the rotation direction indicated by the arrow in the figure). When the first friction wheel 2 rotates in the reverse direction relative to the first pawl seat 4 (opposite to the rotation direction indicated by the arrow in the figure), under the friction of the first friction wheel 2, the first friction cam 5 can rotate relative to the first pawl seat 4 to the first defined angle position.

[0047] When the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, and when the first friction wheel 2 rotates clockwise relative to the first pawl seat 4, the first pawl 1 disengages from the first friction wheel 2, thereby avoiding frictional contact between the pawl and the friction wheel.

[0048] Example 4

[0049] Friction-actuated friction clutches, such as Figures 18-26 As shown, the system includes a first pawl 1, a first friction wheel 2, a first return spring 3, a first pawl seat 4, a first friction cam 5, and a positioning mechanism 8. The first pawl seat 4 has a first positioning groove 10 and a second positioning groove 11. The number of the positioning mechanism 8, the first positioning groove 10, and the second positioning groove 11 can be set according to actual working conditions.

[0050] The positioning mechanism 8 is fixed to the first friction cam 5 via an interference fit with a shaft hole. The structure of the positioning mechanism 8 is as follows: Figure 24 As shown.

[0051] The first friction wheel 2 and the first friction cam 5 are both arranged coaxially with the first pawl seat 4. The first friction wheel 2 and the first pawl seat 4 are respectively connected to external components (not shown, the external components refer to components excluding the "components of the friction-actuated friction clutch") via splines.

[0052] The first friction cam 5 is mounted on the first pawl seat 4 with a clearance fit through a shaft hole, and the first friction cam 5 is rotatable relative to the first pawl seat 4. The end face of the first friction cam 5 contacts the first friction wheel 2, thereby the first friction cam 5 and the first friction wheel 2 interact through friction. Under the action of the first friction wheel 2, the first friction cam 5 is fixed axially relative to the first pawl seat 4. The radial protrusion 19 of the first friction cam 5 engages with the axial boss 21 of the first pawl seat 4, thereby allowing the first friction cam 5 to rotate relative to the first pawl seat 4 between a first limited angle and a second limited angle.

[0053] The first pawl 1 is mounted on the first pawl seat 4 via a clearance fit through a shaft hole. The first pawl 1 is rotatable relative to the first pawl seat 4 and is radially fixed relative to the first pawl seat 4 via a riveting boss. The first pawl 1 is connected to the first friction cam 5 via contact. The first return spring 3 is connected to the first pawl 1. The first pawl seat 4 interacts with the first pawl 1 via the first return spring 3 and the clearance fit through the shaft hole.

[0054] Under the frictional action of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 and the first friction wheel 2 can be engaged or disengaged under the action of the first return spring 3 and the first friction cam 5. At this time, through the first pawl 1, the first pawl seat 4 can selectively transmit the power or movement of the first pawl seat 4 to the first friction wheel 2. Alternatively, through the first pawl 1, the first friction wheel 2 can selectively transmit the power or movement of the first friction wheel 2 to the first pawl seat 4.

[0055] Furthermore, when the first friction cam 5 is at the first defined angle position relative to the first pawl seat 4, the first pawl seat 4 provides a certain angular positioning function for the first friction cam 5 through the interaction between the positioning mechanism 8 and the first positioning groove 10. At this time, even with external interference or power impact, the first friction cam 5 remains at the first defined angle position relative to the first pawl seat 4. Therefore, through the interaction between the positioning mechanism 8 and the first positioning groove 10, the friction-actuated friction clutch has a certain degree of shifting reliability and stability at the first defined angle position.

[0056] Under the friction of the first friction wheel 2, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the first pawl 1 disengages from the first friction wheel 2 under the action of the first return spring 3 and the first friction cam 5.

[0057] Similarly, when the first friction cam 5 is at the second defined angle position relative to the first pawl seat 4, the first pawl seat 4 provides a certain angular positioning function for the first friction cam 5 through the interaction between the positioning mechanism 8 and the second positioning groove 11. At this time, even with external interference or power impact, the first friction cam 5 remains at the second defined angle position relative to the first pawl seat 4. Therefore, through the interaction between the positioning mechanism 8 and the second positioning groove 11, the friction-actuated friction clutch has a certain degree of shifting reliability and stability at the second defined angle position.

[0058] like Figures 22-23 As shown, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first friction wheel 2 is fixed relative to the first pawl seat 4 in the reverse direction (opposite to the rotation direction shown by the arrow in the figure). When the first friction wheel 2 rotates clockwise relative to the first pawl seat 4 (in the rotation direction shown by the arrow in the figure), under the friction of the first friction wheel 2, the first friction cam 5 can rotate relative to the first pawl seat 4 to the second limited angle position.

[0059] like Figures 25-26 As shown, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second defined angle position, the first pawl 1 disengages from the first friction wheel 2, and the first friction wheel 2 can rotate relative to the first pawl seat 4 in the forward rotation direction (the rotation direction indicated by the arrow in the figure). When the first friction wheel 2 rotates in the reverse direction relative to the first pawl seat 4 (opposite to the rotation direction indicated by the arrow in the figure), under the friction of the first friction wheel 2, the first friction cam 5 can rotate relative to the first pawl seat 4 to the first defined angle position.

[0060] The rest is similar to Example 1.

[0061] Example 5

[0062] Friction-actuated friction clutches, such as Figures 27-31 As shown, it includes a first pawl 1, a first friction wheel 2, a first return spring 3, a first pawl seat 4, a first friction cam 5, a third pawl 15, a third return spring 16, and a second friction wheel 17.

[0063] The first friction cam 5 includes a first cam support 51, a first cam spring 53, a second cam spring 54, a first cam friction pad 55, a second cam friction pad 56, a first cam rivet 57, and a second cam rivet 58. One end of the first cam spring 53 is fixedly connected to the first cam support 51 via the first cam rivet 57. The other end of the first cam spring 53 is fixedly connected to the first cam friction pad 55. One end of the second cam spring 54 is fixedly connected to the first cam support 51 via the second cam rivet 58. The other end of the second cam spring 54 is fixedly connected to the second cam friction pad 56. Thus, the first cam support 51, the first cam spring 53, the second cam spring 54, the first cam friction pad 55, the second cam friction pad 56, the first cam rivet 57, and the second cam rivet 58 are interconnected to form a whole (i.e., the first friction cam 5).

[0064] The first friction wheel 2, the first friction cam 5, and the second friction wheel 17 are all coaxially arranged with the first pawl seat 4. The first friction wheel 2, the first pawl seat 4, and the second friction wheel 17 are respectively connected to external components (not shown, the external components refer to components excluding the "components of the friction-actuated friction clutch") via splines.

[0065] The axial boss 21 of the first pawl seat 4 and the axial groove 24 of the first cam support 51 are fitted with a clearance, thereby allowing the first friction cam 5 to be rotatably mounted on the first pawl seat 4, and the first friction cam 5 to be fixed axially relative to the first pawl seat 4. The axial boss 21 of the first pawl seat 4 and the axial groove 24 of the first cam support 51 engage, thereby allowing the first friction cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle. Under the elastic action of the first cam spring 53, the first cam friction pad 55 and the first friction wheel 2 interact through friction. Thus, the first friction wheel 2 and the first friction cam 5 interact through friction. Under the elastic action of the second cam spring 54, the second cam friction pad 56 and the second friction wheel 17 interact through friction. Thus, the second friction wheel 17 and the first friction cam 5 interact through friction.

[0066] The first pawl 1 is mounted on the first pawl seat 4 via a clearance fit through a shaft hole. The first pawl 1 is rotatable relative to the first pawl seat 4 and is axially fixed relative to the first pawl seat 4 by riveted bosses at both ends. The first pawl 1 is connected to the first friction cam 5 through contact. The first return spring 3 is connected to the first pawl 1. The first pawl seat 4 interacts with the first pawl 1 through the first return spring 3 and the clearance fit through the shaft hole.

[0067] The third pawl 15 is disposed opposite to the first pawl seat 4 via a clearance fit through a shaft hole, relative to the first pawl 1. The third pawl 15 is rotatable relative to the first pawl seat 4 and is axially fixed relative to the first pawl seat 4 by riveted bosses at both ends. The third pawl 15 is connected to the first friction cam 5 via contact. The third return spring 16 is connected to the third pawl 15. The first pawl seat 4 interacts with the third pawl 15 through the third return spring 16 and the clearance fit through the shaft hole.

[0068] Under the frictional action of the first friction wheel 2 and the second friction wheel 17, when the first friction cam 5 rotates relative to the first pawl seat 4 to the first limited angle position, the first pawl 1 and the first friction wheel 2 can be engaged or disengaged under the action of the first return spring 3 and the first friction cam 5, and the third pawl 15 disengages from the second friction wheel 17 under the action of the first friction cam 5 and the third return spring 16. At this time, through the first pawl 1, the first pawl seat 4 can selectively transmit the power or movement of the first pawl seat 4 to the first friction wheel 2. Alternatively, through the first pawl 1, the first friction wheel 2 can selectively transmit the power or movement of the first friction wheel 2 to the first pawl seat 4.

[0069] Under the frictional action of the first friction wheel 2 and the second friction wheel 17, when the first friction cam 5 rotates relative to the first pawl seat 4 to the second limited angle position, the first pawl 1 disengages from the first friction wheel 2 under the action of the first return spring 3 and the first friction cam 5, and the third pawl 15 engages or disengages from the second friction wheel 17 under the action of the first friction cam 5 and the third return spring 16. At this time, through the third pawl 15, the first pawl seat 4 can selectively transmit the power or movement of the first pawl seat 4 to the second friction wheel 17. Alternatively, through the third pawl 15, the second friction wheel 17 can selectively transmit the power or movement of the second friction wheel 17 to the first pawl seat 4.

[0070] Preferably, in the initial state, the first friction cam 5 is positioned at the first defined angle relative to the first pawl seat 4, and the third pawl 15 is disengaged from the second friction wheel 17, such as... Figure 30 As shown. At this time, in the forward rotation direction (the rotation direction indicated by the arrow in the figure), the first friction wheel 2 is fixed relative to the first pawl seat 4, and in the forward rotation direction, the second friction wheel 17 is rotatable relative to the first pawl seat 4.

[0071] like Figure 30 As shown, when the first friction cam 5 is at the first limited angle position relative to the first pawl seat 4, and when both the first friction wheel 2 and the second friction wheel 17 are reversed relative to the first pawl seat 4 (opposite to the rotation direction shown by the arrow in the figure), under the friction action of the first friction wheel 2 and the second friction wheel 17, the first friction cam 5 can rotate relative to the first pawl seat 4 to the second limited angle position.

[0072] like Figure 31 As shown, the first friction cam 5 is positioned at the second defined angle relative to the first pawl seat 4, and the first pawl 1 is disengaged from the first friction wheel 2. At this time, in the reverse direction (opposite to the rotation direction indicated by the arrow in the figure), the first friction wheel 2 is rotatable relative to the first pawl seat 4, and in the reverse direction (opposite to the rotation direction indicated by the arrow in the figure), the second friction wheel 17 is fixed relative to the first pawl seat 4.

[0073] like Figure 31 As shown, when the first friction cam 5 is at the second limited angle position relative to the first pawl seat 4, and when both the first friction wheel 2 and the second friction wheel 17 are rotating clockwise relative to the first pawl seat 4 (rotation direction indicated by the arrow in the figure), under the friction action of the first friction wheel 2 and the second friction wheel 17, the first friction cam 5 can rotate relative to the first pawl seat 4 to the first limited angle position.

[0074] Example 6

[0075] Friction-actuated friction clutches, such as Figures 32-36 As shown, it includes a first pawl 1, a first friction wheel 2, a first return spring 3, a first pawl seat 4, a first friction cam 5, a third pawl 15, a third return spring 16, and a second friction wheel 17.

[0076] The first friction cam 5 includes a first cam support 51, a second cam support 52, a first cam spring 53, a second cam spring 54, a first cam friction pad 55, a second cam friction pad 56, a first cam rivet 57, a second cam rivet 58, and a third cam rivet 59. One end of the first cam spring 53 is fixedly connected to the first cam support 51 via the second cam rivet 58. The other end of the first cam spring 53 is fixedly connected to the first cam friction pad 55. One end of the second cam spring 54 is fixedly connected to the second cam support 52 via the third cam rivet 59. The other end of the second cam spring 54 is fixedly connected to the second cam friction pad 56. Under the action of the first ratchet seat 4, the first cam support 51, the second cam support 52, the first cam spring 53, the second cam spring 54, the first cam friction pad 55, the second cam friction pad 56, the first cam rivet 57, the second cam rivet 58, and the third cam rivet 59 are interconnected to form a whole (i.e., the first friction cam 5).

[0077] The first friction wheel 2, the first friction cam 5, and the second friction wheel 17 are all coaxially arranged with the first pawl seat 4. The first friction wheel 2, the first pawl seat 4, and the second friction wheel 17 are respectively connected to external components (not shown, the external components refer to components excluding the "components of the friction-actuated friction clutch") via splines.

[0078] The first cam rivet 57 engages with the axial groove 26 of the first pawl seat 4, thereby rotatably mounting the first friction cam 5 on the first pawl seat 4. Under the action of the first cam support 51, the second cam support 52, and the first cam rivet 57, the first friction cam 5 is axially fixed relative to the first pawl seat 4. The first cam rivet 57 engages with the axial groove 26 of the first pawl seat 4, thereby allowing the first friction cam 5 to rotate relative to the first pawl seat 4 between a first defined angle and a second defined angle.

[0079] The first pawl 1 is mounted on the first cam support 51 via a clearance fit through a shaft hole. The first pawl 1 is rotatable relative to the first cam support 51 and is radially fixed relative to the first cam support 51 by riveted bosses at both ends. The first pawl 1 is connected to the first pawl seat 4 via contact. The first return spring 3 is connected to the first pawl 1. The first friction cam 5 interacts with the first pawl 1 through the first return spring 3 and the clearance fit through the shaft hole.

[0080] Relative to the first pawl 1, the third pawl 15 is disposed in the opposite direction on the second cam support 52 via a clearance fit through a shaft hole. The third pawl 15 is rotatable relative to the second cam support 52 and is radially fixed relative to the second cam support 52 by riveted bosses at both ends. The third pawl 15 is connected to the first pawl seat 4 through contact. The third return spring 16 is connected to the third pawl 15. The first friction cam 5 interacts with the third pawl 15 through the third return spring 16 and the clearance fit through the shaft hole.

[0081] The rest is similar to Example 5.

[0082] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. Therefore, the embodiments should be considered exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention, and no reference numerals in the claims should be construed as limiting the scope of the claims. In the claims, the word "comprising" does not exclude the presence of data or steps not listed in the claims.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment includes only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A friction-actuated friction clutch, used to connect at least two components of a machine, device, transmission system, or mechanism, and / or to selectively engage or disengage the power or motion of the connected moving parts by means of the interaction between a pawl and a friction wheel, and / or to selectively decelerate, stop, or maintain a stopped state of the connected moving parts by means of the interaction between the pawl and the friction wheel, characterized in that: The friction-actuated friction clutch includes at least: a pawl, a friction wheel, a return spring, a pawl seat, and a friction cam; and / or The pawl is directly or indirectly disposed on the pawl seat, and is rotatable relative to the pawl seat within a certain angle range; or the pawl is directly or indirectly disposed on the friction cam, and is rotatable relative to the friction cam within a certain angle range; and / or The friction cam is directly or indirectly mounted on the pawl seat, and the friction cam is rotatable relative to the pawl seat within a certain angle range; and / or The friction cam is directly or indirectly connected to the pawl, or the pawl seat is directly or indirectly connected to the pawl; and / or The return spring is directly or indirectly connected to the pawl; and / or Under the direct or indirect frictional action of the components of the friction-actuated friction clutch, the pawl and the friction wheel selectively disengage; and / or Under the direct or indirect frictional action of the components of the friction-actuated friction clutch, the pawl and the friction wheel selectively engage and disengage; and / or The friction wheel and the ratchet seat are respectively connected to the components of the machine, or the friction wheel and the ratchet seat are respectively connected to the components of the device, or the friction wheel and the ratchet seat are respectively connected to the components of the transmission system, or the friction wheel and the ratchet seat are respectively connected to the components of the mechanism.

2. The friction-actuated friction clutch as described in claim 1, characterized in that: The pawl includes at least a first pawl (1); and / or The friction wheel includes at least a first friction wheel (2); and / or The return spring includes at least a first return spring (3); and / or The pawl seat includes at least a first pawl seat (4); and / or The friction cam includes at least a first friction cam (5); and / or The first pawl (1) is directly or indirectly disposed on the first pawl seat (4), and the first pawl (1) is rotatable relative to the first pawl seat (4) within a certain angle range; and / or The first friction cam (5) is directly or indirectly disposed on the first pawl seat (4), and is rotatable relative to the first pawl seat (4) between a first defined angle and a second defined angle; and / or The first friction cam (5) interacts with the first friction wheel (2) through friction; and / or The first friction cam (5) is directly or indirectly connected to the first pawl (1); and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or Under the frictional action of the first friction wheel (2), when the first friction cam (5) rotates relative to the first pawl seat (4) to the first defined angle position, the first pawl (1) selectively engages or disengages from the first friction wheel (2); and / or Under the frictional action of the first friction wheel (2), when the first friction cam (5) rotates relative to the first pawl seat (4) to the second defined angle position, the first pawl (1) disengages from the first friction wheel (2); and / or The first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the machine, or the first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the device, or the first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the transmission system, or the first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the mechanism; and / or The first pawl (1) includes at least one or more components; and / or The first friction wheel (2) includes at least one or more components; and / or The first return spring (3) includes at least one or more components; and / or The first pawl seat (4) includes at least one or more components; and / or The first friction cam (5) includes at least one or more components.

3. The friction-actuated friction clutch as described in claim 1, characterized in that: The pawl includes at least a first pawl (1); and / or The friction wheel includes at least a first friction wheel (2); and / or The return spring includes at least a first return spring (3); and / or The pawl seat includes at least a first pawl seat (4); and / or The friction cam includes at least a first friction cam (5); and / or The first pawl (1) is directly or indirectly disposed on the first friction cam (5), and the first pawl (1) is rotatable relative to the first friction cam (5) within a certain angle range; and / or The first friction cam (5) is directly or indirectly disposed on the first pawl seat (4), and is rotatable relative to the first pawl seat (4) between a first defined angle and a second defined angle; and / or The first friction cam (5) interacts with the first friction wheel (2) through friction; and / or The first pawl seat (4) is directly or indirectly connected to the first pawl (1); and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or Under the frictional action of the first friction wheel (2), when the first friction cam (5) rotates relative to the first pawl seat (4) to the first defined angle position, the first pawl (1) selectively engages or disengages from the first friction wheel (2); and / or Under the frictional action of the first friction wheel (2), when the first friction cam (5) rotates relative to the first pawl seat (4) to the second defined angle position, the first pawl (1) disengages from the first friction wheel (2); and / or The first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the machine, or the first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the device, or the first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the transmission system, or the first friction wheel (2) and the first pawl seat (4) are respectively connected to components of the mechanism; and / or The first pawl (1) includes at least one or more components; and / or The first friction wheel (2) includes at least one or more components; and / or The first return spring (3) includes at least one or more components; and / or The first pawl seat (4) includes at least one or more components; and / or The first friction cam (5) includes at least one or more components.

4. The friction-actuated friction clutch as described in claim 1, characterized in that: The pawls include at least a first pawl (1), a third pawl (15); and / or The friction wheel includes at least a first friction wheel (2), a second friction wheel (17); and / or The return spring includes at least a first return spring (3), a third return spring (16); and / or The pawl seat includes at least a first pawl seat (4); and / or The friction cam includes at least a first friction cam (5); and / or The first pawl (1) is directly or indirectly disposed on the first pawl seat (4), and the first pawl (1) is rotatable relative to the first pawl seat (4) within a certain angle range; and / or The third pawl (15) is directly or indirectly disposed on the first pawl seat (4), the third pawl (15) is disposed opposite to the first pawl (1), and the third pawl (15) is rotatable relative to the first pawl seat (4) within a certain angle range; and / or The first friction cam (5) is directly or indirectly disposed on the first pawl seat (4), and is rotatable relative to the first pawl seat (4) between a first defined angle and a second defined angle; and / or The first friction cam (5) interacts with the first friction wheel (2) through friction; and / or The first friction cam (5) and the second friction wheel (17) interact through friction; and / or The first friction cam (5) is directly or indirectly connected to the first pawl (1); and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first friction cam (5) is directly or indirectly connected to the third pawl (15); and / or The third return spring (16) is directly or indirectly connected to the third pawl (15); and / or Under the frictional action of the first friction wheel (2) and the second friction wheel (17), when the first friction cam (5) rotates relative to the first pawl seat (4) to the first defined angle position, the first pawl (1) selectively engages and disengages from the first friction wheel (2), and the third pawl (15) disengages from the second friction wheel (17); and / or Under the frictional action of the first friction wheel (2) and the second friction wheel (17), when the first friction cam (5) rotates relative to the first pawl seat (4) to the second defined angle position, the third pawl (15) selectively engages and disengages from the second friction wheel (17), and the first pawl (1) disengages from the first friction wheel (2); and / or The first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the machine, or the first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the device, or the first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the transmission system, or the first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the mechanism; and / or The first pawl (1) includes at least one or more components; and / or The third pawl (15) includes at least one or more components; and / or The first friction wheel (2) includes at least one or more components; and / or The second friction wheel (17) includes at least one or more components; and / or The first return spring (3) includes at least one or more components; and / or The third return spring (16) includes at least one or more components; and / or The first pawl seat (4) includes at least one or more components; and / or The first friction cam (5) includes at least one or more components.

5. The friction-actuated friction clutch as described in claim 1, characterized in that: The pawls include at least a first pawl (1), a third pawl (15); and / or The friction wheel includes at least a first friction wheel (2), a second friction wheel (17); and / or The return spring includes at least a first return spring (3), a third return spring (16); and / or The pawl seat includes at least a first pawl seat (4); and / or The friction cam includes at least a first friction cam (5); and / or The first pawl (1) is directly or indirectly disposed on the first friction cam (5), and the first pawl (1) is rotatable relative to the first friction cam (5) within a certain angle range; and / or The third pawl (15) is directly or indirectly disposed on the first friction cam (5), the third pawl (15) is disposed opposite to the first pawl (1), and the third pawl (15) is rotatable relative to the first friction cam (5) within a certain angle range; and / or The first friction cam (5) is directly or indirectly disposed on the first pawl seat (4), and is rotatable relative to the first pawl seat (4) between a first defined angle and a second defined angle; and / or The first friction cam (5) interacts with the first friction wheel (2) through friction; and / or The first friction cam (5) and the second friction wheel (17) interact through friction; and / or The first pawl seat (4) is directly or indirectly connected to the first pawl (1); and / or The first return spring (3) is directly or indirectly connected to the first pawl (1); and / or The first pawl seat (4) is directly or indirectly connected to the third pawl (15); and / or The third return spring (16) is directly or indirectly connected to the third pawl (15); and / or Under the frictional action of the first friction wheel (2) and the second friction wheel (17), when the first friction cam (5) rotates relative to the first pawl seat (4) to the first defined angle position, the first pawl (1) selectively engages and disengages from the first friction wheel (2), and the third pawl (15) disengages from the second friction wheel (17); and / or Under the frictional action of the first friction wheel (2) and the second friction wheel (17), when the first friction cam (5) rotates relative to the first pawl seat (4) to the second defined angle position, the third pawl (15) selectively engages and disengages from the second friction wheel (17), and the first pawl (1) disengages from the first friction wheel (2); and / or The first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the machine, or the first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the device, or the first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the transmission system, or the first friction wheel (2), the first pawl seat (4), and the second friction wheel (17) are respectively connected to components of the mechanism; and / or The first pawl (1) includes at least one or more components; and / or The third pawl (15) includes at least one or more components; and / or The first friction wheel (2) includes at least one or more components; and / or The second friction wheel (17) includes at least one or more components; and / or The first return spring (3) includes at least one or more components; and / or The third return spring (16) includes at least one or more components; and / or The first pawl seat (4) includes at least one or more components; and / or The first friction cam (5) includes at least one or more components.

6. The friction-actuated friction clutch as described in any one of claims 1 to 5, characterized in that: The contact force between the friction cam and the friction wheel comes directly or indirectly from the elastic force of the spring.

7. The friction-actuated friction clutch as described in any one of claims 2 to 5, characterized in that: When the friction cam rotates relative to the pawl seat to the first defined angle position, the friction cam and the pawl seat have an angle positioning function; and / or When the friction cam rotates relative to the pawl seat to the second defined angle position, the friction cam and the pawl seat have an angle positioning function.

8. The friction-actuated friction clutch as described in any one of claims 2 to 5, characterized in that: When the friction cam rotates relative to the pawl seat to the first defined angle position, the friction cam and the pawl seat achieve an angle positioning function through a series of bosses and / or grooves; and / or When the friction cam rotates relative to the pawl seat to the second defined angle position, the friction cam and the pawl seat achieve an angle positioning function through a series of bosses and / or grooves.

9. The friction-actuated friction clutch as described in any one of claims 2 to 5, characterized in that: The friction-actuated friction clutch includes at least: a positioning mechanism (8); and / or When the friction cam rotates relative to the pawl seat to the first defined angle position, the friction cam and the pawl seat achieve angle positioning through the positioning mechanism (8); and / or When the friction cam rotates relative to the pawl seat to the second defined angle position, the friction cam and the pawl seat achieve angle positioning function through the positioning mechanism (8).

10. The friction-actuated friction clutch as described in any one of claims 1 to 5, characterized in that: The friction cam is directly or indirectly mounted on the pawl seat via a bearing; and / or The friction wheel is directly or indirectly connected to the ratchet seat via a bearing.

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