Clutching device

Abstract

The utility model relates to a kind of clutching devices.The clutching device includes first transmission shaft, second transmission shaft, engagement sleeve and push sleeve, the axial position of first transmission shaft and second transmission shaft is fixed relative to each other, push sleeve can be driven to move axially relative to first transmission shaft and second transmission shaft, engagement sleeve is torsionally connected with first transmission shaft and can be axially moved relative to first transmission shaft to the first axial position separated with second transmission shaft and the second axial position with second transmission shaft through key tooth torsionally engaged, the clutching device further includes push elastic member, push elastic member abuts push sleeve along the axial direction towards first axial position and abuts engagement sleeve along the axial direction towards second axial position, so that push sleeve can indirectly push engagement sleeve from first axial position to second axial position to be torsionally engaged with second transmission shaft via push elastic member.The clutching device of the utility model has improved structure.

Description

Technical Field

[0001] This utility model relates to the field of transmission technology. Specifically, this utility model relates to a clutch device. Background Technology

[0002] Currently, some electric vehicle axles and transmissions require clutch devices for engagement and disengagement, and gear shifting. For electric vehicle axles, this clutch device also disconnects the motor from the wheels, thus preventing the waste of drag torque generated by the motor. In some transmissions, this clutch device is also used to switch the vehicle between different operating modes.

[0003] Clutch mechanisms typically employ keyed engagement structures to selectively transmit torque. For example, a gear-type clutch may use splines or gear teeth, while a jaw clutch may use face-mounted teeth. The keyed teeth are usually formed on an axially movable sleeve. Through the axial movement of the sleeve, the keyed teeth on the sleeve can engage or disengage with the keyed teeth on corresponding components. During engagement, the speed difference between the two drive shafts of the clutch mechanism must first be reduced to a certain level before the sleeve can be moved to engage the two sets of keyed teeth. If the keyed teeth fail to engage successfully, the sleeve must be retracted before re-engaging. This results in a long response time and a low success rate in the engagement process. Furthermore, this engagement method requires relatively complex control logic. Utility Model Content

[0004] Therefore, the technical problem that this utility model needs to solve is to provide an improved clutch device.

[0005] The aforementioned technical problem is solved by a clutch device according to the present invention. The clutch device includes a first drive shaft, a second drive shaft, an engagement sleeve, and a push sleeve. The first drive shaft, the second drive shaft, and the engagement sleeve are each rotatable about a common central axis. The axial positions of the first and second drive shafts are fixed relative to each other. The push sleeve can be driven to move axially relative to the first and second drive shafts. The engagement sleeve is torsionally connected to the first drive shaft and can move axially relative to the first drive shaft to a first axial position separated from the second drive shaft and a second axial position torsionally engage with the second drive shaft via key teeth. The clutch device also includes a push elastic element that abuts against the push sleeve in an axial direction toward the first axial position and against the engagement sleeve in an axial direction toward the second axial position, such that the push sleeve can indirectly push the engagement sleeve from the first axial position to the second axial position via the push elastic element to engage with the second drive shaft torsionally. The push elastic element is elastically deformable under axial compressive force. Because the push sleeve indirectly pushes the engagement sleeve through the push elastic element to achieve anti-torsional engagement, the impact force during the engagement process can be buffered by the elastic deformation of the push elastic element. During engagement, the axial elastic force generated by the push elastic element can maintain elastic contact between the mating end faces, thereby gradually reaching synchronous speeds while maintaining contact and stabilizing the engagement of key-type engagement structures (such as splines, gear teeth, or end face teeth). This allows this clutch device to adapt to larger speed differences without requiring repeated engagement.

[0006] According to a preferred embodiment of the present invention, the engaging sleeve may include a first stop portion, and the pushing sleeve may include a second stop portion. The first and second stop portions are sequentially distributed along an axial direction from a first axial position to a second axial position, such that the pushing sleeve can push the engaging sleeve from the second axial position to the first axial position by abutting against the second stop portion of the first stop portion along the axial direction. This means that the disengagement process of the clutch device is achieved through rigid contact between the pushing sleeve and the engaging sleeve, thereby improving the speed and control accuracy of the disengagement process.

[0007] According to another preferred embodiment of the present invention, the clutch device may include two second drive shafts and two engagement sleeves distributed axially. The first axial positions and second axial positions of the two engagement sleeves are staggered axially. The second axial position of each engagement sleeve is offset relative to its own first axial position in a direction opposite to the first axial position of the other engagement sleeve. The pushing sleeve may include two second stop portions corresponding to the two engagement sleeves respectively. Thus, the axial movement of the pushing sleeve can control the connection or disconnection of the first drive shaft with the two different second drive shafts respectively.

[0008] According to another preferred embodiment of the present invention, when the two engaging sleeves are simultaneously located in their respective first axial positions, an axial gap may exist between the two engaging sleeves, preventing them from abutting each other. This axial gap provides space for the elastic deformation of the elastic element during the engagement process.

[0009] According to another preferred embodiment of the present invention, when any engaging sleeve is pushed to its second axial position by the pushing sleeve, the other engaging sleeve can be pushed to its third axial position by the pushing sleeve via its first stop portion. The clutch device may further include one or more reset elastic elements, each reset elastic element disposed on the first drive shaft between the first axial positions of the two engaging sleeves. Each engaging sleeve may include an inclined surface facing the one or more reset elastic elements and inclined relative to the axial direction. During the movement of each engaging sleeve from its first axial position to its third axial position, it gradually compresses the one or more reset elastic elements radially via the corresponding inclined surface, thereby receiving an elastic force with an axial component pointing towards the corresponding first axial position applied by the one or more reset elastic elements. This allows the one or more reset elastic elements to push the two engaging sleeves back and maintain them in their respective first axial positions when no axial driving force is applied by the pushing sleeve. This enables the clutch device to automatically maintain a state in which the first drive shaft is separated from the two second drive shafts respectively when no driving force is applied.

[0010] According to another preferred embodiment of the present invention, the clutch device may have a neutral axial position axially positioned relative to the first drive shaft. The first and / or second and / or third axial positions of the two engaging sleeves may be symmetrically distributed about the neutral axial position, and the one or more reset elastic elements are disposed on the first drive shaft at the neutral axial position. This ensures the axial symmetry of the entire clutch device.

[0011] According to another preferred embodiment of the present invention, the clutch device may further include one or more end caps respectively mounted on the one or more reset elastic members. Each end cap may include a spherical end face, and each reset elastic member may indirectly abut against the inclined surfaces of the two engagement sleeves through the spherical end face of the corresponding end cap. This allows the reset elastic member to stably abut against the inclined surface and move smoothly along the inclined surface.

[0012] According to another preferred embodiment of the present invention, the clutch device may include two sets of pushing elastic elements corresponding to two engaging sleeves, each set of pushing elastic elements consisting of one or more pushing elastic elements, and each pushing elastic element in any set abutting between the corresponding engaging sleeve and the pushing sleeve along the axial direction. Thus, different engaging sleeves can be pushed by different pushing elastic elements.

[0013] According to another preferred embodiment of the present invention, the clutch device may include a single set of push elastic elements composed of one or more push elastic elements. Each push elastic element in the single set abuts axially between two engaging sleeves, such that the push sleeve can push the corresponding engaging sleeve to compress each push elastic element in the single set via a second stop portion that abuts the first stop portion of any engaging sleeve axially, and then elastically push the other engaging sleeve to a corresponding second axial position via the single set of push elastic elements. Thus, different engaging sleeves can be pushed using the same push elastic element.

[0014] According to another preferred embodiment of the present invention, each of the single set of pushing elastic elements can abut axially between the first stop portions of the two engaging sleeves. The first stop portion can thus simultaneously perform the functions of abutting the second stop portion and pushing the elastic element. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings. In the drawings, the same reference numerals represent elements with the same function. Wherein:

[0016] Figure 1 A longitudinal sectional view of a clutch device according to an embodiment of the present invention is shown;

[0017] Figure 2 Show Figure 1 A partial detail view of the clutch mechanism is shown.

[0018] Figures 3a to 3c Show each Figure 1 A schematic diagram of the clutch device at different moving positions;

[0019] Figure 4 A longitudinal sectional view of a clutch device according to another embodiment of the present invention is shown; and

[0020] Figure 5 Show Figure 4 A partial detail view of the clutch mechanism shown. Detailed Implementation

[0021] The following describes specific embodiments of the clutch device according to the present invention with reference to the accompanying drawings. The detailed description and drawings below are provided to exemplify the principles of the present invention. The present invention is not limited to the described preferred embodiments, and the scope of protection of the present invention is defined by the claims.

[0022] According to an embodiment of the present invention, a clutch device capable of elastic engagement is provided. This clutch device can be applied, for example, to the gear shifting mechanism of a motor vehicle to control the switching of the transmission path between different gears.

[0023] The clutch device mainly includes a first drive shaft 10, a second drive shaft 20, an engagement sleeve 30, and a push sleeve 50. This clutch device can be configured to provide engagement and disengagement functions in a single transmission path (e.g., a single-gear clutch mechanism), in which case the number of the first drive shaft 10, second drive shaft 20, engagement sleeve 30, and push sleeve 50 in the clutch device is one. Alternatively, this clutch device can also be configured to provide switching or separate disengagement functions between two different transmission paths (e.g., a dual-gear shifting mechanism), in which case the number of the first drive shaft 10 and push sleeve 50 in the clutch device is still one, but the number of the second drive shaft 20 and engagement sleeve 30 are each two.

[0024] Figures 1 to 3c An exemplary embodiment of the clutch device according to the present invention is shown. Figures 1 to 3c The clutch device in the illustrated embodiment is a clutch device having a single first drive shaft 10, two second drive shafts 20, and two engagement sleeves 30. This clutch device can drive the first drive shaft 10 to either of the two second drive shafts 20, or it can simultaneously disconnect the first drive shaft 10 from both second drive shafts 20. Figure 1 A longitudinal sectional view of the clutch device according to this embodiment is shown. Figure 1 As shown, in this embodiment, the first drive shaft 10, the two second drive shafts 20, and the two engaging sleeves 30 are respectively formed as coaxially arranged shaft-shaped or cylindrical components, and each is capable of rotating about a common central axis. The axial positions of the first drive shaft 10 and the two second drive shafts 20 are fixed relative to each other, but they are capable of rotating relative to each other about a common central axis.

[0025] Each engaging sleeve 30 is torsionally connected to the first drive shaft 10 in an axially movable manner, for example, by being mounted radially outward or inwardly to the first drive shaft 10 via a spline. Each engaging sleeve 30 can be directly mounted to the first drive shaft 10, or it can be mounted to a hub 12 formed by a shaft body 11 independent of the first drive shaft 10, the hub 12 being fixed to the shaft body 11 to thus collectively constitute the first drive shaft 10. Figures 1 to 3cIn the illustrated embodiment, two engagement sleeves 30 are axially offset and located radially outward from the first drive shaft 10. Each engagement sleeve 30 has key teeth (e.g., splines or gear teeth formed radially outward or radially inward at the end, or insert teeth formed on the axial end face) formed on its end facing away from the other engagement sleeve. Each engagement sleeve 30 can engage its key teeth with the key teeth of a corresponding second drive shaft 20 by moving in the axial direction facing away from the other engagement sleeve, thereby achieving a torsional connection between the two and enabling torque transmission between the first drive shaft 10 and the second drive shaft 20. Each engagement sleeve 30 can also disengage its key teeth from the key teeth of a corresponding second drive shaft 20 by moving in the axial direction toward the other engagement sleeve, thereby breaking the torque transmission between the first drive shaft 10 and the second drive shaft 20.

[0026] Each engaging sleeve 30 has multiple different axial positions relative to the first drive shaft 10 within its permissible range of movement relative to the first drive shaft 10. For each engaging sleeve 30, a first axial position is defined that is separated from the corresponding second drive shaft 20 (e.g., ...). Figure 2 and Figure 3a (as shown) and the second axial position (as shown) that is anti-torsionally engaged with the corresponding second drive shaft 20 via keyed teeth. Figure 3c (As shown). The first axial position and the second axial position of the two coupling sleeves 30 are staggered along the axial direction. The second axial position of each coupling sleeve 30 is offset relative to its own first axial position in a direction away from the first axial position of the other coupling sleeve 30. This makes the axial range from the first axial position to the second axial position of any coupling sleeve 30 completely non-coincident with the axial range from the first axial position to the second axial position of the other coupling sleeve 30.

[0027] As previously described, in this embodiment, the clutch device includes a single push sleeve 50. The push sleeve 50 is a component capable of being driven by an external driving force to move axially relative to the first drive shaft 10 and each of the second drive shafts 20. The mechanism providing the axial driving force to the push sleeve 50 is an actuator 40. The actuator 40 can be an actuator of various known types, such as electric, mechanical, or hydraulic. The actuator 40 can be a peripheral component independent of the push sleeve 50 or can be integrated with the push sleeve 50. The actuator 40, or how it provides the axial driving force to the push sleeve 50, does not constitute a limitation of this invention.

[0028] exist Figures 1 to 3cIn the illustrated embodiment, the clutch device further includes two sets of push elastic elements 60 corresponding to the two engagement sleeves 30, each set of push elastic elements 60 may consist of one or more push elastic elements 60. Each push elastic element 60 may be formed as, for example, a coil spring or other type of elastic component. In some embodiments, each set of push elastic elements 60 may include only one push elastic element 60, which may be coaxially arranged around the central axis of the first drive shaft 10; in other embodiments, each set of push elastic elements 60 may include multiple push elastic elements 60, which are circumferentially distributed around the central axis of the first drive shaft 10, and the central axis of each push elastic element 60 is radially offset outside the corresponding engagement sleeve 30.

[0029] like Figure 2 As shown, in a set of push elastic members 60 corresponding to any engaging sleeve 30, each push elastic member 60 is axially arranged between the engaging sleeve 30 and the push sleeve 50, such that one end of each push elastic member 60 abuts against the push sleeve 50 in an axial direction toward a first axial position of the engaging sleeve 30, while the other end abuts against the corresponding engaging sleeve 30 in an axial direction toward a second axial position. For example, one end of each push elastic member 60 may abut against the end face of the push sleeve 50 toward the second axial position, and the other end may abut against a retaining ring 32 (or a flange formed on the engaging sleeve 30) fixed to the engaging sleeve 30. In this arrangement, the push sleeve 50 can indirectly push the corresponding engaging sleeve 30 from its first axial position to its second axial position via any set of push elastic members 60, thereby engaging with the second drive shaft 20 against torsion. Figure 3b As shown, during this movement, the set of pushing elastic elements 60 is subjected to axial compression between the pushing sleeve 50 and the corresponding engaging sleeve 30 as they transmit thrust, thus enabling elastic deformation (compression) under axial compressive force. Therefore, when one engaging sleeve 30 approaches or reaches... Figure 3c In the second axial position shown, the engaging sleeve 30 does not directly and rigidly abut against the corresponding second drive shaft 20, but rather elastically abuts against the second drive shaft 20 through the elastic deformation of the corresponding pushing elastic element 60. This allows the engaging sleeve 30 and the second drive shaft 20 to maintain contact under a large speed difference and gradually reach a fully stable docking state, thus avoiding re-engagement due to misalignment of the key teeth (especially under large speed differences).

[0030] Preferably, the push sleeve 50 can rigidly push each engaging sleeve 30 from its second axial position back to its first axial position. Specifically, each push elastic element 60 is only in contact with, but not fixedly connected to, the push sleeve 50 and the corresponding engaging sleeve 30, such that when each engaging sleeve 30 needs to move from its second axial position to its first axial position, the push sleeve 50 cannot drive the engaging sleeve 30 through the corresponding push elastic element 60. This is because this driving direction causes the contact points of both the push sleeve 50 and the engaging sleeve 30 with the push elastic element 60 to tend to move away from each other, and the non-fixedly connected push elastic element 60 cannot be stretched by both to apply elastic force. At this time, each engaging sleeve 30 includes a first stop portion 31 (a radially projecting protrusion, such as an annular flange), while the push sleeve 50 includes two second stop portions 51 (radially projecting protrusions, such as an annular flange) distributed axially, which correspond to the first stop portions 31 of the two engaging sleeves 30, respectively. The first stop portion 31 and the corresponding second stop portion 51 of each engaging sleeve 30 are sequentially distributed along an axial direction from its first axial position to its second axial position, such that the pushing sleeve 50 can push the engaging sleeve 30 from its second axial position to its first axial position by abutting against the second stop portion 51 of the first stop portion 31 along the axial direction.

[0031] like Figure 3b and Figure 3c As shown, during the process of either engaging sleeve 30 moving from its first axial position to its second axial position by being pushed by the pushing sleeve 50, since the engaging directions of the two engaging sleeves 30 are arranged in opposite directions, the first stop portion 31 of the other engaging sleeve 30 will abut against the corresponding second stop portion 51 axially, and as the pushing sleeve 50 moves toward its second axial position away from itself, it will pass its first axial position. Therefore, as Figure 3c As shown, when any one engaging sleeve 30 is pushed to its second axial position by the pushing sleeve 50, the other engaging sleeve 30 is pushed to the corresponding third axial position by the pushing sleeve 50.

[0032] The actuator 40, which provides axial driving force to the push sleeve 50, is generally not easy to control in terms of the magnitude of the output force or the axial movement position. Therefore, it is preferable to drive the two engaging sleeves 30 to their respective second axial positions (i.e., to achieve anti-torsional engagement with different second drive shafts 20) by outputting two driving forces in different axial directions through the actuator 40. When the actuator 40 does not apply driving force to the push sleeve 50, the two engaging sleeves 30 are automatically driven back to their respective first axial positions by the reset elastic member 70 provided on the first drive shaft 10, thereby simultaneously disconnecting the torque transmission with the two second drive shafts 20.

[0033] Specifically, Figures 3a to 3c As shown, the clutch device may further include one or more reset elastic elements 70. Each reset elastic element 70 is disposed on the first drive shaft 10 between two engagement sleeves 30 at a first axial position, specifically inserted radially into a positioning hole on the first drive shaft 10. The reset elastic element 70 may be, for example, a coil spring or other form of elastic element. Each reset elastic element 70 mounted on the first drive shaft 10 can be elastically compressed in the radial direction of the first drive shaft 10. When multiple reset elastic elements 70 are present, these reset elastic elements 70 may be circumferentially spaced (specifically uniformly distributed). Each engagement sleeve 30 is formed with a bevel 33 inclined relative to the axial direction (e.g., a chamfered surface extending along an inclined straight line or arc). The bevel 33 of each engagement sleeve 30 faces the reset elastic elements 70, and each engagement sleeve 30 abuts against each elastic reset element 70 via the corresponding bevel 33 as it moves from its own first axial position to a third axial position, and gradually compresses each reset elastic element 70 radially. The inclination direction of the inclined surface 33 causes the elastic force of the radially extending reset elastic element 70 to have an axial component pointing towards a first axial position of the corresponding engaging sleeve 30 when applied to the inclined surface 33, and this axial component gradually increases as the engaging sleeve 30 approaches its third axial position. Accordingly, the axial component of the elastic force of the reset elastic element 70 on the engaging sleeve 30 moving from its first axial position toward its second axial position gradually decreases until the inclined surface 33 of the engaging sleeve 30 separates from all the reset elastic elements 70 and is no longer subjected to this elastic force. Therefore, when the push sleeve 50 does not apply any axial driving force, the axial component of the elastic force applied by these reset elastic elements 70 to the engaging sleeve 30 located in its third axial position can push the engaging sleeve 30 back to its first axial position. At the same time, the push sleeve 50 pushes the other engaging sleeve 30 located in its second axial position back to its first axial position. Finally, when both engaging sleeves 30 are in their respective first axial positions, the elastic forces applied by these reset elastic elements 70 to the two engaging sleeves 30 are balanced in the axial direction, so that the two engaging sleeves 30 remain in their respective first axial positions.

[0034] Each reset elastic element 70 can directly or indirectly abut against the two inclined surfaces 33. For example, in a preferred embodiment, the clutch device may include one or more end caps 71, each end cap 71 being mounted on a corresponding reset elastic element 70. Each end cap 71 is formed with a generally spherical end face. Each reset elastic element 70 can indirectly abut against the inclined surfaces 33 of the two engagement sleeves 30 through the spherical end face of the corresponding end cap 71. The end caps 71 help ensure smooth and stable contact between the reset elastic element 70 and the inclined surfaces 33.

[0035] exist Figures 1 to 3c In the illustrated embodiments, as Figure 2 and Figure 3a As shown, when the two engaging sleeves 30 are simultaneously in their respective first axial positions, there is an axial gap between the two engaging sleeves 30, preventing them from abutting each other. When one engaging sleeve 30 is pushed by the pushing elastic member 60, this axial gap provides movement space for the two engaging sleeves 30 to approach each other axially due to the elastic deformation of the pushing elastic member 60.

[0036] To ensure axial force balance of the clutch mechanism, the clutch mechanism can have a neutral axial position relative to the first drive shaft 10. This neutral axial position is located between two first axial positions of the two engagement sleeves 30. The first axial positions of the two engagement sleeves 30 are preferably symmetrically distributed about the neutral axial position, and / or, the second axial positions of the two engagement sleeves 30 are preferably symmetrically distributed about the neutral axial position, and / or, the third axial positions of the two engagement sleeves 30 are preferably symmetrically distributed about the neutral axial position. Each reset elastic element 70 can correspondingly be disposed on the first drive shaft 10 at the neutral axial position.

[0037] Figure 4 and Figure 5 Another embodiment of the clutch device according to the present invention is shown. Figure 4 and Figure 5 The clutch device in the embodiment and Figures 1 to 3c The difference lies in that the clutch device includes only a single set of actuating elastic elements 60. This single set of actuating elastic elements 60 can also consist of one or more actuating elastic elements 60. The form of each actuating elastic element 60 can be the same as in the aforementioned embodiment. However, in this embodiment, each actuating elastic element 60 abuts axially between two engaging sleeves 30. Therefore, the actuating sleeve 50 can push the corresponding engaging sleeve 30 to compress each of these actuating elastic elements 60 via the second stop portion 51 of the first stop portion 31 abutting axially against any engaging sleeve 30, and then elastically push the other engaging sleeve 30 from its first axial position to a second axial position via each actuating elastic element 60. Specifically, as Figure 5 As shown, the two second stop portions 51 of the push sleeve 50 are axially spaced apart, and the first stop portions 31 of the two engagement sleeves 30 are correspondingly located axially between the two second stop portions 51. Simultaneously, each of this set of push elastic members 60 can axially abut against the two first stop portions 31 of the two engagement sleeves 30. Apart from this, the arrangement of the engagement sleeve 30, push sleeve 50, and reset elastic member 70 of the clutch device in this embodiment is basically the same as in the aforementioned embodiment, and the movement methods of the engagement sleeve 30 and push sleeve 50 are also basically the same, and will not be repeated here.

[0038] Although in the above embodiments, the clutch device includes two second drive shafts 20, two engagement sleeves 30, and corresponding two engagement positions (second axial positions), in other embodiments, such a clutch device may include only a single second drive shaft 20 and a single engagement sleeve 30. In this case, the engagement sleeve 30 is still pushed toward the second axial position by the push elastic member 60, and may also be pushed toward the first axial position by the second stop portion 51 of the push sleeve 50. However, since the single engagement sleeve 30 no longer has a third axial position, the engagement sleeve 30 can be driven directly to the first axial position by the push sleeve 50 through the application of a reverse axial force by the actuator 40, without the need for a reset elastic member 70.

[0039] In the clutch device according to this invention, the engagement process of the key teeth approaching each other is achieved by pushing the elastic element. Therefore, the key teeth can adjust the axial contact force and have the ability to move axially when in contact, thereby gradually reaching synchronous speed and stably engaging the key teeth while maintaining contact. This can effectively increase the probability of successful engagement and reduce the engagement response time. In addition, this clutch device can also conveniently provide engagement and disengagement functions with two different drive shafts, and can automatically achieve disengagement and reset by resetting the elastic element, thereby simplifying the control logic.

[0040] While possible embodiments have been described exemplarily in the foregoing description, it should be understood that numerous variations of the embodiments exist through combinations of all known and readily conceived technical features and implementation methods. Furthermore, it should be understood that the exemplary embodiments are merely examples and do not in any way limit the scope, application, or construction of this invention. The foregoing description is more intended to provide those skilled in the art with technical guidance for transforming at least one exemplary embodiment, wherein various changes, particularly regarding the function and structure of the components, can be made without departing from the scope of the claims.

[0041] Appendix Label Table

[0042] 10 First drive shaft

[0043] 11-axis main body

[0044] 12 Hubs

[0045] 20 Second drive shaft

[0046] 30 Connecting sleeve

[0047] 31 First stop section

[0048] 32 clasps

[0049] 33 bevel

[0050] 40 Actuators

[0051] 50 Push Sleeve

[0052] 51 Second stop section

[0053] 60. Push the elastic element

[0054] 70 Reset elastic element

[0055] 71. End cap.

Claims

1. A clutch device comprising a first drive shaft (10), a second drive shaft (20), an engagement sleeve (30), and a push sleeve (50), wherein the first drive shaft (10), the second drive shaft (20), and the engagement sleeve (30) are each rotatable about a common central axis, the axial positions of the first drive shaft (10) and the second drive shaft (20) are fixed relative to each other, the push sleeve (50) is rotatable relative to the first drive shaft (10) and the second drive shaft (20), the engagement sleeve (30) is anti-torsionally connected to the first drive shaft (10) and is rotatably movable relative to the first drive shaft (10) to a first axial position separated from the second drive shaft (20) and a second axial position anti-torsionally engaged with the second drive shaft (20) by key teeth, characterized in that, The clutch device further includes a push elastic element (60), which is capable of abutting the push sleeve (50) in an axial direction toward the first axial position and abutting the engagement sleeve (30) in an axial direction toward the second axial position, such that the push sleeve (50) can indirectly push the engagement sleeve (30) from the first axial position to the second axial position via the push elastic element (60) to engage with the second drive shaft (20) in a torsional manner, and the push elastic element (60) is capable of elastic deformation when subjected to axial compressive force.

2. The clutch device according to claim 1, characterized in that, The engaging sleeve (30) includes a first stop (31), and the pushing sleeve (50) includes a second stop (51). The first stop (31) and the second stop (51) are distributed sequentially along an axial direction from the first axial position to the second axial position, such that the pushing sleeve (50) can push the engaging sleeve (30) from the second axial position to the first axial position by abutting the second stop (51) of the first stop (31) along the axial direction.

3. The clutch device according to claim 2, characterized in that, The clutch device includes two second drive shafts (20) distributed along the axial direction and two engagement sleeves (30). The first axial position and the second axial position of the two engagement sleeves (30) are staggered along the axial direction. The second axial position of each engagement sleeve (30) is offset relative to its own first axial position in a direction away from the first axial position of the other engagement sleeve (30). The push sleeve (50) includes two second stop portions (51) corresponding to the two engagement sleeves (30).

4. The clutch device according to claim 3, characterized in that, When the two engaging sleeves (30) are simultaneously in their respective first axial positions, there is an axial gap between the two engaging sleeves (30) and they cannot abut against each other.

5. The clutch device according to claim 4, characterized in that, When any one engagement sleeve (30) is pushed to its second axial position by the push sleeve (50), the other engagement sleeve (30) is pushed to its third axial position by the push sleeve (50) via its first stop (31). The clutch device further includes one or more reset elastic elements (70), each reset elastic element (70) being disposed on the first drive shaft (10) between the first axial positions of the two engagement sleeves (30). Each engagement sleeve (30) includes an element facing the one or more reset elastic elements (70) and inclined relative to the axial direction. The inclined surface (33) of each engaging sleeve (30) gradually compresses the one or more reset elastic elements (70) radially through the corresponding inclined surface (33) as each engaging sleeve (30) moves from its first axial position to its third axial position, thereby being subjected to an elastic force with an axial component pointing to the corresponding first axial position by the one or more reset elastic elements (70), such that when the pushing sleeve (50) does not apply an axial driving force, the one or more reset elastic elements (70) can push the two engaging sleeves (30) back and hold them in their respective first axial positions.

6. The clutch device according to claim 5, characterized in that, The clutch device has a neutral axial position relative to the first drive shaft (10), the first axial position and / or the second axial position and / or the third axial position of the two engagement sleeves (30) are symmetrically distributed about the neutral axial position, and one or more reset elastic elements (70) are disposed on the first drive shaft (10) at the neutral axial position.

7. The clutch device according to claim 5, characterized in that, The clutch device further includes one or more end caps (71) respectively mounted on the one or more reset elastic elements (70), each end cap (71) including a spherical end face, and each reset elastic element (70) indirectly abutting the inclined surface (33) of the two engagement sleeves (30) through the spherical end face of the corresponding end cap (71).

8. The clutch device according to any one of claims 3 to 7, characterized in that, The clutch device includes two sets of push elastic elements (60) corresponding to the two engagement sleeves (30), each set of push elastic elements (60) consists of one or more push elastic elements (60), and each push elastic element (60) in any set of push elastic elements (60) abuts axially between the corresponding engagement sleeve (30) and the push sleeve (50).

9. The clutch device according to any one of claims 3 to 7, characterized in that, The clutch device includes a single set of push elastic elements (60) consisting of one or more push elastic elements (60), each of the single set of push elastic elements (60) abutting axially between the two engagement sleeves (30), such that the push sleeve (50) can push the corresponding engagement sleeve (30) to compress each of the single set of push elastic elements (60) via a second stop (51) of a first stop (31) abutting axially against any engagement sleeve (30), and then elastically push the other engagement sleeve (30) to move to a corresponding second axial position via the single set of push elastic elements (60).

10. The clutch device according to claim 9, characterized in that, Each of the single set of push elastic elements (60) abuts axially between the first stop portions (31) of the two engaging sleeves (30).

Images