Switchable one-way clutch and axle system

Abstract

The invention relates to a switchable one-way clutch and an axle system. The switchable one-way clutch includes an outer ring, an inner ring, a cage, a roller, and a roller pusher. And the retainer, the roller and the roller pushing piece are arranged in a slit space between the outer ring and the inner ring. The radial side, facing the slit space, of the outer ring or the inner ring is provided with a radial inner concave section and a radial gradual convex section. The retainer can push the rollers to move in the circumferential direction relative to the inner ring, so that the outer ring and the inner ring are disconnected. The roller pushing piece can push the rollers to move in the circumferential direction of the retainer, so that torque is transmitted between the outer ring and the inner ring in a one-way mode through the rollers. By the adoption of the switchable one-way clutch, when the power mode of the axle system of the hybrid electric vehicle is switched, the rotating speed of wheels does not need to be adjusted, quick response can be achieved, the switching success rate is high, and noise and impact are low when the power mode is switched.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle transmissions. Specifically, the present invention relates to a switchable one-way clutch and an axle system. Background Art

[0002] In existing hybrid vehicles, the clutch is usually designed as a multi-plate clutch or a claw clutch. Such a clutch can only operate in a fully disengaged or fully engaged state to switch different power modes of the vehicle. When the clutch switches between the disengaged state and the fully engaged state, the vehicle needs to adjust its speed to reduce noise and shock. Due to the adjustment speed, the response time of the system is also increased.

[0003] In the fully engaged state, the claw clutch may generate collision noise and shock due to the clearance between the teeth. Such noise may cause discomfort to the driver, and the impact between the teeth may lead to failures and reduce the service life of the vehicle. At the same time, the design of the claw clutch may make it difficult to switch from the disengaged state to the fully engaged state because the teeth may get stuck during the switching process, so the switching success rate is relatively low. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a switchable one-way clutch and an axle system.

[0005] An embodiment of one aspect of the present invention provides a switchable one-way clutch, which includes: an outer ring, an inner ring, a cage, rollers, and a roller pusher. The inner ring is coaxially disposed radially inside the outer ring. The cage is at least partially disposed in the slit space between the outer ring and the inner ring and can circumferentially move relative to the inner ring. The rollers are disposed in the slit space between the outer ring and the inner ring and are located on one side of the circumferential movement direction of the cage, so that the cage can push the rollers to circumferentially move relative to the inner ring. The roller pusher is disposed on the circumferential side of the rollers away from the cage and can push the rollers to move in the circumferential direction toward the cage. Wherein, the radial side of the outer ring or the inner ring facing the slit space has a radially concave section and a radially convex section; the radial distance between the outer ring and the inner ring increases at the radially concave section and gradually decreases at the radially convex section. When the cage pushes the rollers to the radially concave section, there is a gap between the rollers and the outer ring or the inner ring in the radial direction; when the roller pusher pushes the rollers to the radially convex section, there is no gap between the rollers and the outer ring and the inner ring, so that torque is unidirectionally transmitted between the outer ring and the inner ring through the rollers.

[0006] According to some embodiments of the present invention, the switchable one-way clutch further includes: a component that rotates synchronously with the inner ring and pushes the cage to move circumferentially relative to the inner ring; wherein, the clamping plate clamps and positions the cage in the radially concave section or the radially convex section.

[0007] According to some embodiments of the present invention, the cage extends towards one axial side to form a positioning portion, and the positioning portion is provided with a positioning groove; the clamping plate has a clamping convex portion extending into the positioning groove, and the clamping convex portion can move relatively in the axial direction and the circumferential direction along the inner edge of the positioning groove. By controlling the axial movement of the clamping convex portion along the inner edge of the positioning groove, the cage is pushed to move circumferentially relative to the inner ring.

[0008] According to some embodiments of the present invention, the circumferential dimension of the opening on one axial side of the positioning groove corresponds to the circumferential dimension of the clamping convex portion. When the clamping convex portion is located on the said axial side of the positioning groove, the cage is clamped and positioned with the clamping plate. When the clamping convex portion moves to the other axial side of the positioning groove, the cage is pushed by a preloading spring so that the clamping convex portion remains in contact with the inner inclined edge of the positioning groove, to push the cage to move circumferentially relative to the inner ring, and the cage is positioned by the preloading spring and the clamping convex portion.

[0009] According to some embodiments of the present invention, the switchable one-way clutch further includes a hub, which is fixedly arranged on the radially inner side of the inner ring; the clamping plate is connected to the hub by a spline, so that the clamping plate can move axially and rotate synchronously with the hub and the inner ring.

[0010] According to some embodiments of the present invention, a return spring is arranged on one axial side of the clamping plate to control the axial movement of the clamping plate.

[0011] According to some embodiments of the present invention, a stop plate is arranged on the axial side of the clamping plate away from the return spring.

[0012] According to some embodiments of the present invention, the roller pusher is a spring structure, and the roller is pushed towards the circumferential direction of the cage by the spring force.

[0013] According to some embodiments of the present invention, multiple groups of the cage, rollers, roller pushers, radially concave sections, and radially convex sections are provided in one-to-one correspondence and are arranged evenly in the circumferential direction.

[0014] An embodiment of another aspect of the present invention provides an axle system, which includes a switchable one-way clutch, an internal combustion engine, a P3 motor, and a wheel as described in the above embodiments. Among them, the switchable one-way clutch is arranged between the internal combustion engine and the wheel.

[0015] The switchable one-way clutch described in the present invention is used in the axle system of a hybrid vehicle. The switchable one-way clutch can be switched to a disengaged state and a one-way clutch state. In the disengaged state, one end of the input shaft and one end of the output shaft do not transmit torque; in the one-way clutch state, one end of the input shaft and one end of the output shaft transmit torque unidirectionally. In this way, when the axle system switches the power mode, it is not necessary to adjust the wheel speed, and it can respond quickly with a high switching success rate; moreover, when switching the power mode, the noise and impact are low, which improves the service life of the vehicle. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Shows a schematic diagram of an axle system according to an embodiment of the present invention;

[0018] Figure 2 Shows a radial cross-sectional view of a switchable one-way clutch according to an embodiment of the present invention;

[0019] Figure 3 Shows an axial cross-sectional view of a switchable one-way clutch according to an embodiment of the present invention;

[0020] Figure 4 Shows a partial radial cross-sectional view of a switchable one-way clutch in the disengaged state according to an embodiment of the present invention;

[0021] Figure 5 Shows a partial radial cross-sectional view of a switchable one-way clutch in the one-way clutch state according to an embodiment of the present invention;

[0022] Figure 6 (a) Shows an axial partial cross-sectional view of a switchable one-way clutch in the disengaged state according to an embodiment of the present invention;

[0023] Figure 6 (b) Shows a partial top view of a switchable one-way clutch in the disengaged state according to an embodiment of the present invention;

[0024] Figure 7(a) shows an axial partial cross-sectional view of a switchable one-way clutch in the one-way clutch state according to an embodiment of the present invention;

[0025] Figure 7 (b) shows a partial top view of a switchable one-way clutch in the one-way clutch state according to an embodiment of the present invention;

[0026] Figure 8 shows a perspective view of a cage according to an embodiment of the present invention;

[0027] Figure 9 shows a perspective view of a clamping plate according to an embodiment of the present invention; and

[0028] Figure 10 shows a radial cross-sectional view at another position of a switchable one-way clutch according to an embodiment of the present invention.

[0029] It should be understood that the above-mentioned drawings are only schematic, and the drawings are not drawn according to actual proportions. Detailed Embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0031] Figure 1 shows a schematic diagram of an axle system in a hybrid vehicle. Refer to Figure 1 As shown, in a hybrid vehicle, by driving the wheels 400 in parallel with the internal combustion engine 200 and the P3 motor 300, fuel and motor hybrid drive can be achieved. A clutch is provided between the internal combustion engine 200 and the wheels 400. When the clutch is connected, fuel and motor hybrid drive can be achieved; when the clutch is disengaged, P3 motor alone drive can be achieved; in this way, the power mode switching of the hybrid vehicle can be realized. In addition, the axle system in the hybrid vehicle further includes a P1 motor 500, which is integrated on the output shaft of the internal combustion engine 200 and is used to assist the internal combustion engine 200 to save fuel.

[0032] Since a multi-plate clutch or a claw clutch can only work in a fully disengaged or fully connected state to switch different power modes of a hybrid vehicle. When the clutch switches between the disengaged state and the one-way clutch state, the vehicle needs to adjust its speed, increasing the response time of the system.

[0033] Therefore, an embodiment of the present invention provides a switchable one-way clutch 100, which is applied to the axle system in a hybrid vehicle. As Figure 1 shown, the switchable one-way clutch 100 is disposed between the internal combustion engine 200 and the wheel 400; more specifically, the switchable one-way clutch 100 can be disposed between the internal combustion engine 200 and the speed reducer.

[0034] Figure 2 shows a radial cross-sectional view of the switchable one-way clutch 100 according to an embodiment of the present invention; Figure 3 shows an axial cross-sectional view of the switchable one-way clutch according to an embodiment of the present invention. As Figure 2 and Figure 3 shown, the switchable one-way clutch 100 includes: an outer ring 1, an inner ring 2, a cage 3, rollers 4, and a roller pusher 5. The inner ring 2 can be connected to one end of the input shaft 110 through a spline and transmit torque, and the outer ring 1 can be connected to one end of the output shaft 120 through a spline and transmit torque. Wherein, the other end of the input shaft 110 is connected to the internal combustion engine 200, and the internal combustion engine 200 transmits the torque to the inner ring 2 through the input shaft; the other end of the output shaft 120 is connected to one end of the speed reducer, and the other end of the speed reducer is connected to the wheel 400.

[0035] In some embodiments, the switchable one-way clutch 100 further includes a hub 6, which is fixedly disposed on the radial inner side of the inner ring 2. In this embodiment, the inner ring 2 is not directly connected to the input shaft 110, but is connected to the input shaft 110 through the hub 6 to transmit torque. For example, the inner side of the hub 6 is provided with an internal spline, which can be connected to the input shaft 110 to transmit torque.

[0036] In some embodiments, referring to Figure 2 and Figure 3 shown, the inner ring 2 is coaxially disposed on the radial inner side of the outer ring 1. The cage 3 is at least partially disposed in the slit space between the outer ring 1 and the inner ring 2, and can circumferentially move relative to the inner ring 2; optionally, the cage 3 is provided with a pushing portion 31 extending in the radial direction. The roller 4 is disposed in the slit space between the outer ring 1 and the inner ring 2, and is located on one side of the circumferential movement direction of the pushing portion 31, so that the pushing portion 31 can push the roller 4 to circumferentially move relative to the inner ring 2. The roller pusher 5 is disposed on the circumferential side of the roller 4 away from the pushing portion 31, and can push the roller 4 to move in the circumferential direction of the pushing portion 31.

[0037] In some embodiments, the roller pusher 5 is a spring structure, which can push the roller 4 to move in the circumferential direction of the cage 3 through its own spring force.

[0038] Further, a radially concave section 21 and a radially convex section 22 are provided on the radial side of the outer ring 1 or the inner ring 2 facing the slit space; the radial distance between the outer ring 1 and the inner ring 2 increases at the radially concave section 21 and gradually decreases at the radially convex section 22.

[0039] Specifically, as Figure 2 shown, the outer radial side of the inner ring 2 has a radially concave section 21 that is recessed toward the radial inside and a radially convex section 22 that gradually protrudes toward the radial outside; the radius of the inner ring 2 at the radially concave section 21 is smaller than the radius at the radially convex section 22, and the radial distance between the outer ring 1 and the inner ring 2 increases at the radially concave section 21 and gradually decreases at the radially convex section 22.

[0040] In addition, a radially concave section 21 that is recessed toward the radial outside and a radially convex section 22 that gradually protrudes toward the radial inside can also be provided on the radial inner side of the outer ring 1; the inner diameter of the outer ring 1 at the radially concave section 21 is larger than the inner diameter at the radially convex section 22, and the radial distance between the outer ring 1 and the inner ring 2 increases at the radially concave section 21 and gradually decreases at the radially convex section 22.

[0041] Of course, it can also be that both the outer ring 1 and the inner ring 2 are provided with a radially concave section 21 and a radially convex section 22 at their corresponding positions; as long as it is ensured that the radial distance of the slit space between the outer ring 1 and the inner ring 2 increases at the radially concave section 21 and gradually decreases at the radially convex section 22.

[0042] The following describes, taking the example that the outer radial side of the inner ring 2 has the radially concave section 21 and the radially convex section 22, in combination with the accompanying drawings.

[0043] Figure 4 shows a partial radial cross-sectional view of the switchable one-way clutch according to an embodiment of the present invention in the disengaged state; Figure 5 shows a partial radial cross-sectional view of the switchable one-way clutch according to an embodiment of the present invention in the one-way clutch state; the following refers to Figures 1 to 5 shown.

[0044] As Figure 4As shown, when the cage 3 pushes the roller 4 to the radially concave section 21, since the radial distance between the outer ring 1 and the inner ring 2 is larger at the radially concave section 21, there is a clearance between the roller 4 and the outer ring 1 or the inner ring 2 in the radial direction. At this time, the outer ring 1 and the inner ring 2 cannot transmit torque through the roller 4, and the switchable one-way clutch 100 is in the disengaged state. In the disengaged state, the internal combustion engine 200 no longer provides torque output to the wheel 400.

[0045] As Figure 5 shown, when the roller pusher 5 pushes the roller 4 to the radially convex section 22, since the radial distance between the outer ring 1 and the inner ring 2 gradually decreases at the radially convex section 22, there is no clearance between the roller 4 and the outer ring 1 and the inner ring 2, so that torque can be unidirectionally transmitted between the outer ring 1 and the inner ring 2 through the roller 4. That is, when the roller 4 is pushed to the radially convex section 22, the switchable one-way clutch 100 switches to the one-way clutch state.

[0046] As Figure 5 shown, the switchable one-way clutch 100 is in the one-way clutch state. Specifically, when the inner ring 2 connected to the input shaft 110 rotates in the circumferential direction of the pushing portion 31 towards the roller 4 (i.e., the clockwise direction as Figure 5 shown), the roller 4 is clamped between the outer ring 1 and the inner ring 2. The inclined surface of the radially convex section 22 forms a driving force on the roller 4, and has a thrust component in the circumferential direction and a radially outward pressure component on the roller 4. The radially outward pressure component causes a frictional force to be formed between the roller 4 and the radially inner side surface of the outer ring 1, so that torque is transmitted between the outer ring 1 and the inner ring 2 through the roller 4. At this time, the internal combustion engine 200 can be connected in parallel with the P3 motor 300 to jointly provide torque output to the wheel 400.

[0047] When the inner ring 2 connected to the input shaft 110 rotates in the circumferential direction of the roller 4 towards the pushing portion 31 (i.e., the counterclockwise direction as Figure 5 shown), although the roller 4 is located at the radially convex section 22 under the action of the roller pusher 5 at this time, the inclined surface of the radially convex section 22 does not form a driving force on the roller 4, so that the roller 4 does not form enough frictional force on the outer ring 1. Therefore, no torque is transmitted between the outer ring 1 and the inner ring 2.

[0048] Optionally, the inner ring radius between the radially concave section 21 and the radially convex section 22 gradually increases, so that the transition from the radially concave section 21 to the radially convex section 22 is smooth. The radially convex section 22 can be a flat inclined surface or have a certain arc. In this way, the roller 4 can be gradually clamped or released, making the switching between the one-way clutch state and the disengaged state of the switchable one-way clutch 100 smoother and reducing the impact during state switching.

[0049] In some embodiments, the switchable one-way clutch 100 further includes a clamping plate 10, which rotates synchronously with the inner ring 2 and pushes the cage 3 to move circumferentially relative to the inner ring 2; wherein, when the pushing portion 31 moves to the radially concave section 21 and the radially convex section 22, the clamping plate 10 respectively clamps and positions the cage 3.

[0050] Furthermore, Figure 6 (a) and Figure 6 (b) show schematic views of the switchable one-way clutch 100 according to an embodiment of the present invention in the disengaged state; Figure 7 (a) and Figure 7 (b) show schematic views of the switchable one-way clutch 100 according to an embodiment of the present invention in the one-way clutch state. Figure 8 A perspective view of the cage 3 according to an embodiment of the present invention is shown; Figure 9 A perspective view of the clamping plate 10 according to an embodiment of the present invention is shown.

[0051] Referring to Figure 6 (a) to Figure 9 As shown, the cage 3 extends towards the axial side to form a positioning portion 32, and the positioning portion 32 is provided with a positioning groove 33; the clamping plate 10 has a clamping convex portion 10a extending into the positioning groove 33, and the clamping convex portion 10a can move relatively in the axial direction and the circumferential direction along the inner inclined edge of the positioning groove 33. By controlling the axial movement of the clamping convex portion 10a along the inner inclined edge of the positioning groove 33, the cage 3 is pushed to move circumferentially relative to the inner ring 2.

[0052] Specifically, as Figure 6 (b) shows, the positioning groove 33 faces the axial side of the input shaft 110 (i.e., Figure 6(b), the circumferential dimension of the opening on the left side) corresponds to the circumferential dimension of the engaging convex portion 10a. When the engaging convex portion 10a is located on the axial side of the positioning groove 33, the cage 3 is engaged and positioned with the engaging plate 10. At this time, the cage 3 rotates synchronously with the engaging plate 10, and thus rotates synchronously with the inner ring 2. The cage 3 can be fixed relative to the inner ring 2 at a first circumferential position. The cage 3 located at the first circumferential position can be arranged at a position where the pushing portion 31 can push the roller 4 to the radially concave section 21, and this state is the disconnected state.

[0053] As Figure 7 (b) shows, the opening of the positioning groove 33 on the axial side facing the output shaft 120 (i.e., Figure 7 (b) the right side) has a circumferential displacement compared to the opening on the axial side facing the input shaft 110 (i.e., Figure 7 (b) the left side). The region where the openings on both axial sides of the positioning groove 33 communicate has an inner inclined edge. The inner inclined edge is the inner edge of the positioning groove 33 having an inclination angle between the axial direction and the circumferential direction, such that when the engaging convex portion 10a moves to the axial side of the positioning groove 33 facing the output shaft 120 (i.e., Figure 7 (b) the right side), the engaging convex portion 10a can always abut against the inner inclined edge, and thus can cause the engaging convex portion 10a to push the positioning portion 32 to communicate with the cage 3 to have a certain circumferential displacement, and the cage 3 is engaged and fixed at a second circumferential position relative to the inner ring 2. The cage 3 located at the second circumferential position can be arranged at a position where the pushing portion 31 can push the roller 4 to the radially convex section 22, and this state is the one-way clutch state.

[0054] In some alternative embodiments, the positioning groove 33 can be set as an inclined groove having the same width as the engaging convex portion 10a. This inclined groove is inclined at a certain angle in both the axial direction and the circumferential direction, and can always engage and fix the engaging convex portion 10a in the circumferential direction, so that when the engaging convex portion 10a moves to the axial side of the positioning groove 33 facing the output shaft 120, the positioning portion 32 can drive the cage 3 to have a certain circumferential displacement, and the cage 3 is engaged and fixed at a second circumferential position relative to the inner ring 2.

[0055] In other alternative embodiments, as shown in Figure 7 (b), the opening of the positioning groove 33 on the axial side facing the output shaft 120 (i.e., Figure 7 (b) the right side) has a circumferential displacement compared to the opening on the axial side facing the input shaft 110 (i.e., Figure 7(The circumferential dimension of the opening on the left side in (b)) is larger and has an inner inclined edge that has a certain angle in both the axial direction and the circumferential direction, such that when the clamping protrusion 10a moves to the axial side of the positioning groove 33 facing the output shaft 120 (i.e., Figure 7 (the right side in (b)), the cage 3 is pushed by the preloading spring 8 so that the clamping protrusion 10a always remains in contact with the inner inclined edge of the positioning groove 33, causing the preloading spring 8 to drive the cage 3 to undergo a certain circumferential displacement, and the clamping protrusion 10a and the preloading spring 8 jointly clamp and fix the cage 3 at a second circumferential position relative to the inner ring 2.

[0056] Figure 10 Shows a radial cross-sectional view at another position of the switchable one-way clutch 100 according to an embodiment of the present invention. Figure 10 Shows the positions and connection relationships of the preloading spring 8, the inner ring 2, and the cage 3. As Figure 10 shown, the inner ring 2 has an inner ring protrusion protruding radially outward, and one end of the preloading spring 8 is fixed to the inner ring protrusion of the inner ring 2, such that the inner ring 2 can apply a thrust force to the preloading spring 8 in the circumferential direction through the inner ring protrusion; the cage 3 has a cage protrusion protruding radially inward, and the other end of the preloading spring 8 abuts against the cage protrusion of the cage 3. When the inner ring 2 applies a thrust force to the preloading spring 8, the other end of the preloading spring 8 can apply a thrust force to the cage 3 in the circumferential direction from the first circumferential position to the second circumferential position.

[0057] It should be understood that the above principles regarding the structure and circumferential positioning of the clamping protrusion 10a and the positioning groove 33 are only exemplary, and there can also be other structures that can position the cage 3 at the first circumferential position and the second circumferential position, which are not limited herein. In addition, it should also be understood that the opening structure of the positioning groove 33 in the axial direction can also be set in the opposite direction, as long as it can position the cage 3 at the first circumferential position and the second circumferential position.

[0058] In some alternative embodiments, the clamping plate 10 is connected to the hub 6 by a spline, so that the clamping plate 10 can rotate synchronously with the hub 6 and the inner ring 2, and the clamping plate 10 can move axially along the hub 6.

[0059] As Figure 6 (a) and Figure 7As shown in (a), in some alternative embodiments, a return spring 9 is provided on one axial side of the clamping plate 10 to control the axial movement of the clamping plate 10. In addition, a stop plate 11 is further provided on the axial side of the clamping plate 10 away from the return spring 9 for stopping and limiting the axial movement of the clamping plate 10.

[0060] Further, the switchable one-way clutch 100 further includes an actuator 12, which controls the axial movement of the clamping plate 10 by controlling the compression and rebound of the return spring 9. For example, the actuator 12 can be an electromagnetic control actuator. As Figure 6 As shown in (a), when the electromagnetic control actuator is powered off, the return spring 9 releases its elastic force to push the clamping plate 10 towards the input shaft 110 side, thereby controlling the cage 3 to be located at the first circumferential position, so that the switchable one-way clutch 100 is in the disengaged state; as Figure 7 As shown in (a), when the electromagnetic control actuator is powered on, the return spring 9 retracts and tightens to pull the clamping plate 10 towards the output shaft 120 side, thereby controlling the cage 3 to be located at the second circumferential position, so that the switchable one-way clutch 100 is in the one-way clutch state.

[0061] In some alternative embodiments, a bearing 7 is provided between the outer ring 1 and the inner ring 2, which can be a thrust bearing for example, to support the outer ring 1 and the inner ring 2 in the axial direction.

[0062] In some alternative embodiments, multiple groups of the cage 3, rollers 4, radially concave section 21 and radially convex section 22 of the roller pusher 5 are provided in one-to-one correspondence and are evenly arranged in the circumferential direction; this can enable the switchable one-way clutch 100 to switch more smoothly and effectively between the disengaged state and the one-way clutch state.

[0063] Another aspect of the embodiments of the present invention further provides an axle system, including the switchable one-way clutch 100, internal combustion engine 200, P3 motor 300 and wheel 400 as described in the above embodiments. Among them, the switchable one-way clutch 100 is arranged between the internal combustion engine 200 and the wheel 400. The detailed description of the axle system is as described above and will not be repeated here.

[0064] By using the switchable one-way clutch 100 of the present invention in the axle system of a hybrid vehicle, it is not necessary to adjust the wheel speed when switching the power mode, and it can respond quickly, with a high switching success rate, and low noise and low impact when switching the power mode, improving the service life of the vehicle.

[0065] Although possible embodiments have been described exemplarily in the foregoing description, it should be understood that there are still numerous variations of embodiments through combinations of all known and additionally technically conceivable technical features and embodiments. Furthermore, it should also be understood that the exemplary embodiments are merely an example, and such embodiments in no way limit the protection scope, application, and construction of the present invention. Through the foregoing description, more is to provide a technical guidance for those skilled in the art to transform at least one exemplary embodiment, wherein various changes can be made as long as the protection scope of the claims is not departed from, especially changes regarding the functions and structures of the components.

[0066] List of reference numerals

[0067] 100. Switchable one-way clutch; 1. Outer ring; 2. Inner ring; 21. Radially concave section; 22. Radially convex section; 3. Cage; 31. Pushing part; 32. Positioning part; 33. Positioning groove; 4. Roller; 5. Roller pusher; 6. Hub; 7. Bearing; 8. Preloading spring; 9. Return spring; 10. Clamping plate; 10a. Clamping projection; 11. Stop plate; 12. Actuator;

[0068] 200. Internal combustion engine;

[0069] 300. P3 motor;

[0070] 400. Wheel;

[0071] 500. P1 motor.

Claims

1. A switchable one-way clutch, characterized in that, Comprising: An outer ring (1); An inner ring (2), which is coaxially arranged on the radially inner side of the outer ring (1); A cage (3), which is at least partially arranged in the slit space between the outer ring (1) and the inner ring (2), and can move circumferentially relative to the inner ring (2); Rollers (4), which are arranged in the slit space between the outer ring (1) and the inner ring (2), and are located on one side of the circumferential movement direction of the cage (3), so that the cage (3) can push the rollers (4) to move circumferentially relative to the inner ring (2); And A roller pusher (5), which is arranged on the circumferential side of the roller (4) away from the cage (3), and can push the roller (4) to move in the circumferential direction towards the cage (3); Wherein, the radially inner concave section (21) and the radially gradually convex section (22) are provided on the radially inner side of the outer ring (1) or the inner ring (2) facing the slit space; the radial distance between the outer ring (1) and the inner ring (2) increases at the radially inner concave section (21) and gradually decreases at the radially gradually convex section (22); When the cage (3) pushes the roller (4) to the radially inner concave section (21), there is a gap between the roller (4) and the outer ring (1) or the inner ring (2) in the radial direction; when the roller pusher (5) pushes the roller (4) to the radially gradually convex section (22), there is no gap between the roller (4) and the outer ring (1) and the inner ring (2), so that torque is unidirectionally transmitted between the outer ring (1) and the inner ring (2) through the roller (4).

2. The switchable one-way clutch according to claim 1, characterized in that, Further comprising: A clamping plate (10), which rotates synchronously with the inner ring (2) and pushes the cage (3) to move circumferentially relative to the inner ring (2); wherein, the clamping plate (10) clamps and positions the cage (3) at the radially inner concave section (21) or the radially gradually convex section (22).

3. The switchable one-way clutch according to claim 2, characterized in that, The cage (3) extends towards the axial side to form a positioning portion (32), and a positioning groove (33) is formed in the positioning portion (32); the clamping plate (10) has a clamping convex portion (10a) extending into the positioning groove (33), and the clamping convex portion (10a) can move relatively in the axial direction and the circumferential direction along the inner inclined edge of the positioning groove (33). By controlling the axial movement of the clamping convex portion (10a) along the inner inclined edge of the positioning groove (33), the cage (3) is pushed to move circumferentially relative to the inner ring (2).

4. The switchable one-way clutch according to claim 3, characterized in that, The circumferential dimension of the opening on the axial side of the positioning groove (33) corresponds to the circumferential dimension of the clamping convex portion (10a). When the clamping convex portion (10a) is located on the axial side of the positioning groove (33), the cage (3) is clamped and positioned with the clamping plate (10); When the clamping convex portion (10a) moves to the other axial side of the positioning groove (33), the cage (3) is pushed by the preloading spring (8) so that the clamping convex portion (10a) remains in abutment against the inner inclined edge of the positioning groove (33), to push the cage (3) to move circumferentially relative to the inner ring (2), and the cage (3) is positioned by the preloading spring (8) and the clamping convex portion (10a).

5. The switchable one-way clutch according to claim 3, characterized in that, It further includes a hub (6) fixedly arranged on the radial inner side of the inner ring (2); the clamping plate (10) is connected to the hub (6) by splines, so that the clamping plate (10) can move axially and rotate synchronously with the hub (6) and the inner ring (2).

6. The switchable one-way clutch according to claim 3, characterized in that, A return spring (9) is arranged on one axial side of the clamping plate (10) to control the axial movement of the clamping plate (10).

7. The switchable one-way clutch according to claim 6, characterized in that, A stop plate (11) is arranged on the axial side of the clamping plate (10) away from the return spring (9).

8. The switchable one-way clutch according to claim 6, characterized in that, The roller pusher (5) is a spring structure, and the roller (4) is pushed by the spring force to move in the circumferential direction of the cage (3).

9. The switchable one-way clutch according to claim 1, characterized in that, Multiple groups of the cage (3), the roller (4), the roller pusher (5), the radially concave section (21) and the radially convex section (22) are provided in one-to-one correspondence and are evenly arranged in the circumferential direction.

10. An axle system, characterized in that, Comprising: The switchable one-way clutch (100) according to any one of claims 1-9; An internal combustion engine (200); A P3 motor (300); And A wheel (400); Wherein, the switchable one-way clutch (100) is arranged between the internal combustion engine (200) and the wheel (400).

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