A clutch mechanism and a tubular motor having the clutch mechanism

Abstract

A clutch mechanism includes a sleeve connected to a manual drive shaft and rotating synchronously therewith, a first friction disc, a friction ring, a second friction disc, and a friction driving member sequentially sleeved outside the motor rotor shaft. The first friction disc is fixedly connected to the motor rotor shaft and is disposed between the sleeve and the friction ring. The friction ring can move axially along the motor rotor shaft relative to the sleeve and the motor rotor shaft, and the friction ring rotates synchronously with the sleeve. The second friction disc can move towards the first friction disc under the drive of the friction driving member and then clamp the friction ring with the first friction disc. A tubular motor having this clutch mechanism includes a housing and a manual drive mechanism, a stroke mechanism, a capacitor, a clutch mechanism, a motor module, and a reduction mechanism sequentially arranged inside the housing. This clutch mechanism and its motor not only have a compact structure, reasonable design, simple component structures, and are convenient for processing and installation, but also the motor runs stably, and the clutch separation and engagement are smoother.

Description

Technical Field

[0001] The invention relates to a clutch mechanism and a tubular motor having the clutch mechanism. Background Art

[0002] With the development of science and technology, more and more automation elements are integrated into home life. Traditional curtains, awnings, blinds and other similar products are all manually controlled. Nowadays, the use of tubular motors to drive traditional curtains, awnings, blinds and other similar products has been increasingly favored by users. Compared with traditional manual control, the use of tubular electric drive is more convenient and user-friendly. Therefore, its use is becoming more and more common, which has also promoted the further development of tubular motors.

[0003] A general tubular motor includes a motor module, a capacitor, a deceleration mechanism, a brake mechanism, and generally also has a manual mechanism that can drive the motor shaft to rotate when the motor is powered off. Therefore, a clutch mechanism is generally provided between the manual mechanism and the motor module.

[0004] For example, the invention patent with Chinese patent authorization announcement number CN204271817U discloses a tubular motor that can be chain-driven. A chain is set up to be connected to the sprocket shaft, and a clutch mechanism composed of an upstream transmission sleeve, a downstream transmission sleeve, an upstream synchronization ring, a friction disk and a spring is set up between the sprocket shaft and the motor shaft of the motor. When the motor is powered on, the clutch mechanism separates the motor shaft from the sprocket shaft. At this time, the rotation of the sprocket shaft cannot be transmitted to the motor shaft. When the motor is powered off, the clutch mechanism links the motor shaft with the sprocket shaft. At this time, by pulling the chain, the motor shaft can be driven to rotate through the sprocket shaft, thereby realizing manual operation.

[0005] This chain-driven tubular motor realizes controllable clutch between the sprocket shaft and the motor shaft, which makes the motor of the tubular motor less prone to damage. However, the disadvantage of the above chain-driven tubular motor is that the structure of the clutch mechanism is relatively complex, which makes the processing accuracy and manufacturing cost of each component high, and the installation is also relatively complicated. Summary of the invention

[0006] In view of this, the embodiments of the present invention provide a clutch mechanism of a tubular motor with a simpler and more compact structure, more stable operation, and lower processing difficulty, and a tubular motor having the clutch mechanism.

[0007] In order to solve the above problems, the embodiments of the present invention mainly provide the following technical solutions:

[0008] A clutch mechanism, characterized in that: it comprises

[0009] A sleeve connected to the manual drive shaft and rotating synchronously,

[0010] A first friction disk, a friction ring, a second friction disk, and a friction driving member that are sequentially sleeved outside the motor rotor shaft,

[0011] The first friction disk is fixedly connected to the motor rotor shaft and is disposed between the sleeve and the friction ring;

[0012] The friction ring can move axially along the motor rotor shaft relative to the sleeve and the motor rotor shaft, and the friction ring rotates synchronously with the sleeve,

[0013] The second friction disk can move towards the first friction disk under the drive of the friction driving member and then clamp the friction ring with the first friction disk to achieve the engaged state of the clutch mechanism. The friction driving member can move axially along the motor rotor shaft in a direction away from the first friction disk, so that there is a gap between the first friction disk, the friction ring, and the second friction disk, achieving the disengaged state of the clutch mechanism.

[0014] Preferably, magnetic members are respectively provided on the friction driving member and the motor rotor shaft. When the motor is powered on, a suction force is generated between the friction driving member and the motor rotor shaft, and the friction driving member moves axially along the motor rotor shaft in a direction away from the first friction disk; when the motor is powered off, the suction force between the friction driving member and the motor rotor shaft disappears, and the friction driving member moves axially along the motor rotor shaft in a direction towards the first friction disk.

[0015] Preferably, a large spring is provided between the friction driving member and the motor rotor shaft, and the large spring makes the friction driving member have a tendency to always move towards the first friction disk.

[0016] Preferably, a support member is provided between the second friction disk and the friction driving member. The outer side of the support member is used to support a bearing, and a support sleeve is sleeved outside the bearing. One end of the support sleeve abuts against the sleeve and is connected to the outer shell of the motor.

[0017] Preferably, the outer surface of the support member is provided with a plurality of positioning grooves that are circumferentially spaced apart and axially extend along it. The front end of the friction driving member is provided with a plurality of protrusions that are circumferentially spaced apart and axially extend along it. The protrusions are located in the positioning grooves and pass through the support member to abut against the second friction disk.

[0018] Preferably, a small spring is sleeved outside a part of the motor rotor shaft located between the second friction disk and the first friction disk. The two ends of the small spring respectively abut against the first friction disk and the second friction disk, and are used to maintain the gap between the first and second friction disks.

[0019] As another embodiment, a plurality of positioning grooves are provided on the outer surface of the support member, which are circumferentially spaced apart along it and extend axially along it. A plurality of protrusions are provided at the front end of the friction driving member, which are circumferentially spaced apart along it and extend axially along it. The protrusions are located in the positioning grooves and are connected to or integrally formed with the second friction disk through the support member.

[0020] Preferably, a plurality of grooves are provided on the annular circumferential surface of the sleeve, which are circumferentially spaced apart along it and extend axially along it. Protrusions matching the grooves are provided on the outer surface of the friction ring, and the protrusions are stuck in the grooves.

[0021] Preferably, the first friction disk includes a disk-shaped surface and an axial surface extending perpendicular to the disk-shaped surface. The axial surface passes through the friction ring and is located between the friction ring and the motor rotor shaft. A part of the axial surface can be inserted into the inner side of the second friction disk, and a matching concave-convex structure is provided between the outer surface of the axial surface and the inner surface of the second friction disk.

[0022] Preferably, a plurality of concave holes are provided on the surfaces of the first friction disk, the second friction disk and the friction ring that face each other.

[0023] A tubular motor includes a housing and a manual driving mechanism, a stroke mechanism, a capacitor, a clutch mechanism, a motor module and a speed reduction mechanism arranged in sequence. It is characterized in that: one end of the motor module forms an output shaft exposed from the speed reduction mechanism through the speed reduction mechanism for applying to an external load. The motor rotor shaft at the other end of the motor module is inserted into the clutch mechanism. The manual driving shaft of the manual driving mechanism passes through the stroke mechanism, the capacitor and is connected to the clutch mechanism. The tubular motor further includes a braking structure, and the braking mechanism can play a braking role on the motor module.

[0024] Preferably, the braking structure is located between the capacitor and the clutch mechanism, and one end of the manual driving shaft is connected to the clutch mechanism through the braking mechanism. The braking mechanism can transmit the rotation of the manual driving shaft connected on the left to the clutch mechanism connected on the right unidirectionally, and in the combined state of the clutch mechanism, the braking mechanism can play a braking role on the motor rotor shaft connected to the right clutch mechanism.

[0025] Preferably, the braking mechanism is a torsion spring braking structure.

[0026] Preferably, the clutch mechanism of the tubular motor is the above structure.

[0027] With the above technical solutions, the technical solutions provided by the embodiments of the present invention have at least the following advantages: The clutch mechanism of the tubular motor uses the frictional force between the first and second friction discs and the friction ring for clutch operation, and uses the cooperation between the second friction disc and the friction driving member for clutch operation. Only one large bearing is used to support the rotation of the motor rotor shaft, and the large bearing also fixedly supports one end of the rotor shaft and the clutch mechanism connected to the rotor shaft. Moreover, the relative distance between the one large bearing and the fixed bearing at the other end of the rotor shaft is smaller, making the operation of the rotor shaft more stable and quiet. It not only has a compact structure, reasonable design, simple component structure, and is convenient for processing and installation, but also operates stably, and the clutch separation and engagement are smoother. By using the holes on the friction surface, the separation and engagement of the clutch mechanism are also smoother, and it also plays a role in heat dissipation. And for the tubular motor with this clutch mechanism, by the reasonable cooperation and structural arrangement of the clutch mechanism and the brake mechanism, it can not only achieve automatic clutch in the power-off and power-on states of the motor, but also effectively brake the motor, and prevent the damage of the motor caused by the instantaneous power-off and power-on switching, making the operation of the motor more reliable and stable.

[0028] The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to be able to understand the technical means of the embodiments of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following specifically describes the specific embodiments of the present invention. Brief Description of the Drawings

[0029] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the embodiments of the present invention. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0030] Figure 1 Shows a schematic diagram of the tubular motor provided by the embodiments of the present invention;

[0031] Figure 2 Shows a schematic diagram of the tubular motor provided by the embodiments of the present invention (excluding the outer shell);

[0032] Figure 3 Shows an exploded view of the components of the clutch mechanism of the tubular motor provided by the embodiments of the present invention;

[0033] Figure 4 Shows an exploded view of the components of the clutch mechanism of the tubular motor provided by the embodiments of the present invention from another angle;

[0034] Figure 5The sectional view of the clutch mechanism of the tubular motor provided by the embodiment of the present invention is shown;

[0035] Figure 6 The exploded view of the components of the clutch mechanism of the tubular motor provided by another embodiment of the present invention is shown;

[0036] Figure 7 The sectional view of the clutch mechanism of the tubular motor provided by another embodiment of the present invention is shown. Detailed implementation manners

[0037] The exemplary embodiments disclosed by the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments disclosed by the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0038] The tubular motor of the present invention, as Figure 1 , 2 shown, includes a housing 10, and a manual driving mechanism 5, a stroke mechanism 4, a capacitor 6, a brake mechanism 3, a clutch mechanism 2, a motor module 1, and a reduction mechanism 7 arranged in sequence. The manual driving mechanism 5 is partially exposed outside the housing 10, and all other components are located inside the housing 10. One end of the motor module 1 forms an output shaft 12 exposed outside the reduction mechanism 7 through the reduction mechanism 7 for loading an external load, and the motor rotor shaft 11 at the other end is inserted into the clutch mechanism 2. The manual driving shaft 51 in the manual driving mechanism 5 passes through the stroke mechanism 4, the capacitor 6, and is inserted into the brake mechanism 3 and connected to the brake mechanism 3, and is connected to the clutch mechanism 2 through the brake mechanism 3. The manual driving mechanism 5 further includes a driving member 52 partially exposed outside the motor housing 10 and capable of driving the manual driving shaft 51 to rotate about its axial direction.

[0039] The brake mechanism 3 is connected to the clutch mechanism 2. The brake mechanism 3 is used to realize the one-way rotational transmission between the components on the left and right sides and the braking effect of the component on the right side, that is, the brake mechanism 3 can transmit the rotation of the manually driven shaft 51 connected on the left to the clutch mechanism 2 connected on the right, while the rotation of the clutch mechanism 2 connected on the right cannot be transmitted to the manually driven shaft 51 connected on the left, and in the engaged state of the clutch mechanism 2, the brake mechanism 3 can play the role of braking the rotation of the motor rotor shaft connected to the clutch mechanism 2 on the right.

[0040] The braking mechanism 3 generally adopts a torsion spring braking structure. The basic structure of the torsion spring braking structure is as shown in ZL201820925769.8. It usually includes a front braking component, a braking elastic component, and a rear braking component that are axially connected in sequence. The rotation of the front braking component can make the braking elastic component tend to expand radially to increase the friction between the braking elastic component and the inner shaft sleeve on its outer side, thereby playing a braking role. The rotation of the rear braking component can make the braking elastic component tend to contract radially to reduce the friction between the braking elastic component and the inner shaft sleeve on its outer side. Furthermore, the rotation of the rear braking component can drive the front braking component to rotate synchronously. That is, this braking mechanism includes two side components connected to it. The rotation of one side component can be braked by the braking mechanism, and after braking, the rotation of the other side component can be transmitted to the one side component to achieve the transmission of one-way rotation.

[0041] The braking mechanism 3 is used to brake the rotation of the right motor when the motor is powered off and the clutch mechanism 2 is in the engaged state. And at this time, the rotation of the left manual drive shaft 51 can be transmitted to the right clutch mechanism and the motor rotor shaft 11, so that the manual drive mechanism 5 can drive the right motor rotor shaft 11 to rotate, realizing the manual drive operation in the power-off state. And this braking mechanism 3 only realizes one-way transmission, that is, it can only realize the transmission from the left manual drive shaft 51 to the right motor rotor shaft 11. When the motor rotor shaft 11 is rotating, even if the clutch mechanism 2 is still in the engaged or disengaged state at this time, the rotation of the motor rotor shaft 11 cannot be transmitted to the left manual drive shaft 51, and it only plays a braking role. Further, the clutch mechanism 2 can automatically separate and disconnect when the motor is powered on, that is, it plays a role in separating the motor rotor shaft 11 and the manual drive shaft 51, disconnecting the connection between the manual drive shaft 51 and the motor rotor shaft 11, preventing the operation of the motor from interfering with the left manual drive mechanism 5. And the braking mechanism 3 is on the left side of the clutch mechanism 2, so that even if there is a problem with the clutch mechanism and it cannot be disconnected in time when the motor is powered on, this braking mechanism 3 can still brake the motor rotor shaft 11 in time.

[0042] This clutch mechanism 2, as Figures 3 - 5 shown, includes a sleeve 21 connected to the front braking component in the braking mechanism 3. The rear braking component in the braking mechanism 3 is connected to the manual drive shaft 51. Furthermore, this sleeve 21 is connected to the manual drive shaft 51 through the braking mechanism 3 and can rotate synchronously. The clutch mechanism 2 also includes a first friction disc 22, a friction ring 23, a second friction disc 24, a support member 25, and a friction driving member 26 that are sequentially sleeved outside the motor rotor shaft 11.

[0043] The first friction disk 22 is fixedly connected to the motor rotor shaft 11, and thus can rotate synchronously with the motor rotor shaft 11. The first friction disk 22 is located between the sleeve 21 and the friction ring 23. Preferably, a connecting member 111 is provided at the end of the motor rotor shaft 11, and this connecting member 111 is used to fixedly connect the first friction disk 22 to the motor rotor shaft 11. The friction ring 23 is located between the first friction disk 22 and the second friction disk 24, and can move axially along the motor rotor shaft 11. The first friction disk 22 includes a disk-shaped surface 221 and an axial surface 222 that extends perpendicularly to the disk-shaped surface 221. This axial surface 222 passes through the inner side of the friction ring 23, that is, it is located between the friction ring 23 and the motor rotor shaft 11, and this axial surface 222 can be partially inserted into the inner side of the second friction disk 24. There are mutually matching concave and convex structures between the outer surface of this axial surface 222 and the inner surface of the second friction disk 24. When the second friction disk 24 moves axially along the motor rotor shaft 11 towards the first friction disk 22 and abuts and engages with the friction ring 22 to rotate synchronously, that is, when the clutch mechanism is in the engaged state, these concave and convex structures can cooperate with each other, making the synchronous rotation of the second friction disk 24 and the first friction disk more reliable, that is, rotating synchronously with the motor rotor shaft 11. And there are gaps between the first friction disk 22, the second friction disk 24, and the friction ring 23, that is, in the separated state of the clutch, there are gaps among the three. A small spring 27 is sleeved on the outer side of the motor rotor shaft 11 between the second friction disk 24 and the first friction disk 22. Preferably, a small spring 27 is sleeved on the outer side of the axial phase surface 222 of the first friction disk 22. The two ends of this small spring 27 respectively abut against the first friction disk 22 and the second friction disk 24, and are located inside the friction ring, and are used to maintain the gap between the first and second friction disks, and further maintain the gap among the first and second friction disks and the friction ring.

[0044] A plurality of grooves 211 are provided on the circumferential surface of the sleeve 21, which are circumferentially spaced apart and axially extend along it. Protrusions 231 that match the grooves 211 are provided on the outer surface of the friction ring 23. The protrusions are stuck in the grooves 211, so that the friction ring 23 can move axially relative to the sleeve 21, but rotate synchronously circumferentially. The first and second friction disks and the friction ring are all located inside the circumferential surface of the sleeve 21.

[0045] On the surfaces of the first friction disk 22 and the second friction disk 24 facing the friction ring 23, a plurality of concave holes 20 are provided. These concave holes 20 not only play a role in heat dissipation, but also make it easier to separate between the first and second friction disks and the friction ring 23, making the separation and engagement between the first and second friction disks and the friction ring 23 smoother.

[0046] The inner side of the support member 25 is fixedly connected to the motor rotor shaft 11, and its outer surface is used to support the bearing 28 sleeved on its outer side. A support sleeve 200 is sleeved on the outer side of the bearing 28. One end of the support sleeve 200 abuts against the sleeve and is connected to the housing 10. A plurality of positioning grooves 251 are provided on the outer surface of the support member 25, which are circumferentially spaced apart along it and axially extend along it. The front end of the friction driving member 26 is provided with a plurality of protrusions 261 that are circumferentially spaced apart along it and axially extend along it. The protrusions 261 are matched with the positioning grooves 251. The protrusions 261 are located in the positioning grooves 251 and are located between the support member 25 and the bearing 28, and pass through the support member 25 to abut against the second friction disc 24.

[0047] A large spring 29 is provided between the inner side of the friction driving member 26 and the motor rotor shaft 11. The large spring 29 makes the friction driving member 26 always tend to move towards the first and second friction discs. When the motor is powered on, a suction force is generated between the motor rotor shaft and the friction driving member 26, causing the friction driving member 26 to move backward towards the motor side, that is, axially along the motor rotor shaft in the direction away from the first friction disc. As a result, there is always a gap between the first and second friction discs and the friction ring. At this time, the clutch mechanism 2 is in a disengaged state. When the motor is powered off, the suction force between the motor rotor and the friction driving member 26 disappears. At this time, the friction driving member 26 is driven by the large spring 29 to push forward against the second friction disc, causing the second friction disc, the friction ring, and the first friction disc to be tightly combined. And the friction ring rotates synchronously with the sleeve. Furthermore, the first friction disc, the second friction disc, and the motor rotor shaft fixedly connected to the first friction disc are all combined with the sleeve and can rotate synchronously. Since the sleeve 21 and the manual driving shaft 51 can rotate synchronously, at this time, the clutch mechanism plays a role of engagement, enabling the manual driving shaft 51 and the motor rotor shaft 11 to be connected and rotate synchronously. And the bearing 28 plays a supporting role between the motor rotor shaft 11 and the housing 10 when the motor rotor shaft rotates. The suction force between the motor rotor and the friction driving member 26 is an electromagnetic suction force, which is usually achieved by respectively providing magnetic members on the motor rotor and the friction driving member 26, so as to achieve the effect that they have suction force when powered on and the suction force disappears when powered off. This electromagnetic suction force enables the friction driving member 26 to move back and forth axially along the motor rotor shaft 11, thereby enabling the clutch mechanism to realize the engagement or disengagement between the motor rotor shaft and the manual driving shaft.

[0048] Therefore, when the motor is powered on, a suction force is generated between the motor rotor shaft 11 and the friction driving member 26, enabling the friction driving member 26 to move away from the first and second friction discs towards the motor side. As a result, there is a gap between the first and second friction discs and the friction ring, and thus the clutch mechanism 2 functions to disengage. The rotation of the left motor rotor shaft will not affect the left braking mechanism 3 and the manual driving mechanism, etc. When the motor is powered off, since the suction force between the motor rotor shaft 11 and the friction driving member 26 disappears, the friction driving member 26 presses forward against the second friction disc under the elastic force of the large spring 29, causing the second friction disc to move axially along the motor rotor shaft and press forward against the friction ring and the first friction disc. Consequently, the first friction disc, the second friction disc, and the friction ring are tightly fitted together due to friction, and the clutch mechanism functions to engage. Since the friction ring and the sleeve can rotate synchronously, the motor rotor shaft fixedly connected to the first friction disc can rotate synchronously with the sleeve, and the sleeve 21 is connected to the braking mechanism 3. At this time, the motor is braked by the braking mechanism 3. At this moment, the other side of the braking mechanism 3 is connected to the manual driving shaft, and by rotating the manual driving shaft, the sleeve, the clutch mechanism, and the motor rotor shaft on the other side can be driven synchronously, serving the function of manually driving the motor. If the motor rotates again after being powered on, the clutch mechanism disengages again. The movement of the left manual driving mechanism will not affect the motor and will not damage the motor. Even if the clutch mechanism fails to disengage at this time, due to the function of the braking mechanism 3, the motor will not be able to rotate, and the left manual driving mechanism will not interfere with the right motor module and will not damage the motor.

[0049] As Figure 6 , 7 shown, FIG. is the exploded view and cross-sectional view of another embodiment of the tubular motor. In this embodiment, other structures are exactly the same as those in the above first embodiment, except that in this embodiment, the second friction disc 24 and the friction driving member 26 are fixedly connected to each other or integrally formed.

[0050] The inner side of the support member 25 is fixedly connected to the motor rotor shaft 11, and its outer surface is used to support the bearing 28 sleeved on its outer side. A support sleeve 200 is sleeved on the outer side of the bearing 28. One end of the support sleeve 200 abuts against the sleeve and is connected to the housing 10. The outer surface of the support member 25 is provided with a plurality of positioning grooves 251 that are circumferentially spaced apart and axially extend along it. The front end of the friction driving member 26 is provided with a plurality of protrusions 261 that are circumferentially spaced apart and axially extend along it. The protrusions 261 are matched with the positioning grooves 251. The protrusions 261 are located in the positioning grooves 251 and are located between the support member 25 and the bearing 28, and are connected to the second friction disk 24 through the support member 25. Grooves 262 are formed between the protrusions 261, which are just used to accommodate and expose the support member 25, so that the outer surface of the support member 25 contacts the bearing 28. In such a structure, the small spring 27 for maintaining the distance between the second friction disk 24, the friction ring 23, and the first friction disk 22 can be omitted, because when the motor is powered on, the second friction disk 24 can be magnetically attracted together with the friction driving member 26 and thus move away from the first friction disk 22 and the friction ring 23, and when the motor is powered off, it can squeeze the friction ring 23 and the first friction disk 22 together with the friction driving member 26. Therefore, the small spring 27 can be omitted.

[0051] The clutch mechanism of the tubular motor uses the frictional force between the first and second friction disks and the friction ring for clutch operation, and also uses the cooperation between the second friction disk and the friction driving member for clutch operation. Only one large bearing is used to fixedly support one end of the rotor shaft and the clutch mechanism connected to one end of the rotor shaft, and the relative distance from the fixed bearing at the other end of the rotor shaft is smaller, making the operation of the rotor shaft more stable and quiet. It not only has a compact structure, reasonable design, simple component structure, and is convenient for processing and installation, but also operates stably, and the clutch separation and engagement are smoother. By using the holes on the friction surface, the separation and engagement of the clutch mechanism are also smoother, and it also plays a role in heat dissipation. Moreover, for the tubular motor with this clutch mechanism, by the reasonable cooperation and structural arrangement of the clutch mechanism and the brake mechanism, it can not only achieve automatic clutch in the power-off and power-on states of the motor, but also achieve effective braking of the motor, and prevent the damage of the motor caused by the instantaneous power-off and power-on switching, making the operation of the motor more reliable and stable.

[0052] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, commodity or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity or device including the element.

[0053] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A clutch mechanism, characterized in that: including a sleeve (21) connected to a manual drive shaft (51) and rotating synchronously therewith, a first friction disc (22), a friction ring (23), a second friction disc (24), and a friction driving member (26) sequentially sleeved outside a motor rotor shaft (11), the first friction disc (22) is fixedly connected to the motor rotor shaft (11) and is disposed between the sleeve (21) and the friction ring (23), the friction ring (23) can move axially along the motor rotor shaft (11) relative to the sleeve (21) and the motor rotor shaft (11), and the friction ring (23) rotates synchronously with the sleeve (21), the second friction disc (24) can move towards the first friction disc (22) under the drive of the friction driving member (26) and then clamp the friction ring (23) with the first friction disc (22) to achieve the engaged state of the clutch mechanism. The friction driving member (26) can move axially along the motor rotor shaft (11) in a direction away from the first friction disc (22), so that there is a gap between the first friction disc (22), the friction ring (23), and the second friction disc (24) to achieve the disengaged state of the clutch mechanism.

2. The clutch mechanism according to claim 1, wherein: Magnetic members are respectively provided on the friction driving member (26) and the motor rotor shaft (11). When the motor is powered on, a suction force is generated between the friction driving member (26) and the motor rotor shaft (11), and the friction driving member (26) moves axially along the motor rotor shaft (11) in a direction away from the first friction disc (22). When the motor is powered off, the suction force between the friction driving member (26) and the motor rotor shaft (11) disappears, and the friction driving member (26) moves axially along the motor rotor shaft (11) towards the first friction disc (22).

3. The clutch mechanism according to claim 2, wherein: A large spring (29) is provided between the friction driving member (26) and the motor rotor shaft (11), and the large spring (29) makes the friction driving member (26) have a tendency to always move towards the first friction disc (22).

4. The clutch mechanism according to claim 1, characterized in that: A support member (25) is provided between the second friction disc (24) and the friction driving member (26). The outer side of the support member (25) is used to support a bearing (28). A support sleeve (200) is sleeved outside the bearing (28). One end of the support sleeve (200) abuts against the sleeve (21) and is connected to the outer shell (10) of the motor.

5. The clutch mechanism according to claim 4, characterized in that: The outer surface of the support member (25) is provided with a plurality of positioning grooves (251) that are circumferentially spaced apart and axially extend along it. The front end of the friction driving member (26) is provided with a plurality of protrusions (261) that are circumferentially spaced apart and axially extend along it. The protrusions (261) are located in the positioning grooves (251) and pass through the support member (25) to abut against the second friction disc (24).

6. The clutch mechanism according to claim 5, characterized in that: A small spring (27) is sleeved outside a part of the motor rotor shaft (11) located between the second friction disc (24) and the first friction disc (22). The two ends of the small spring (27) respectively abut against the first friction disc (22) and the second friction disc (24) to maintain the gap between the first and second friction discs.

7. The clutch mechanism according to claim 4, characterized in that: The outer surface of the support member (25) is provided with a plurality of positioning grooves (251) that are circumferentially spaced apart along it and extend along its axial direction. The front end of the friction driving member (26) is provided with a plurality of pawls (261) that are circumferentially spaced apart along it and extend along its axial direction. The pawls (261) are located within the positioning grooves (251) and are connected to or integrally formed with the second friction disk (24) through the support member (25).

8. The clutch mechanism according to claim 1, characterized in that: The annular circumferential surface of the sleeve (21) is provided with a plurality of grooves (211) that are circumferentially spaced apart along it and extend along its axial direction. The outer surface of the friction ring (23) is provided with protrusions (231) that match the grooves (211), and the protrusions (231) are clamped within the grooves (211).

9. The clutch mechanism according to any one of claims 1-8, characterized in that: The first friction disk (22) includes a disk-shaped surface (221) and an axial surface (222) that extends perpendicular to the disk-shaped surface (221). The axial surface (222) passes through the friction ring (23) and is located between the friction ring (23) and the motor rotor shaft (11). A part of the axial surface (222) can be inserted into the inner side of the second friction disk (24), and a matching concave-convex structure is provided between the outer surface of the axial surface (222) and the inner surface of the second friction disk (24).

10. The clutch mechanism according to any one of claims 1-8, characterized in that: A plurality of concave holes (20) are provided on the surfaces of the first friction disk (22), the second friction disk (24) that face the friction ring (23).

11. A tubular motor, comprising a housing (10), a manual driving mechanism (5), a stroke mechanism (4), a capacitor (6), a clutch mechanism (2), a motor module (1), and a speed reduction mechanism (7) which are arranged in sequence, characterized in that: One end of the motor module (1) forms an output shaft (12) that is exposed from the reduction mechanism through the reduction mechanism (7) for applying to an external load. The motor rotor shaft (11) at the other end of the motor module (1) is inserted into the clutch mechanism (2). The manual drive shaft (51) of the manual drive mechanism (5) passes through the stroke mechanism (4), the capacitor (6) and is connected to the clutch mechanism (2). The tubular motor further includes a brake structure (3), and the brake structure (3) can function as a brake for the motor module (1); the clutch mechanism (2) is the structure described in any one of claims 1-10.

12. The tubular motor according to claim 11, characterized in that: The brake structure (3) is located between the capacitor (6) and the clutch mechanism (2), and one end of the manual drive shaft (51) is connected to the clutch mechanism (2) through the brake structure (3). The brake structure (3) can transmit the rotation of the manually driven shaft (51) connected on the left to the clutch mechanism (2) connected on the right unidirectionally, and in the combined state of the clutch mechanism (2), the brake structure (3) can function as a brake for the motor rotor shaft (11) connected to the clutch mechanism (2) on the right.

13. The tubular motor according to claim 12, characterized in that: The brake structure (3) is a torsion spring brake structure.

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