Rotary drive device with clutch

Abstract

The application relates to the field of rotary driving devices, and discloses a rotary driving device with a clutch; the rotary driving device comprises a device main body, the device main body comprises a shell with an inner cavity, the inner cavity is provided with a first transmission member, a second transmission member and a driving unit; the second transmission member is used for fixedly matching with a driving member; the driving unit is used for driving the first transmission member to rotate to drive the second transmission member to rotate; the driving member is used for rotating to drive the second transmission member to rotate and the first transmission member to be static under the action of an external force; the device main body further comprises a clutching member used for realizing the rotary matching between the first transmission member and the second transmission member, and the clutching member is used for realizing the clutching between the first transmission member and the second transmission member. Through the above arrangement, the automatic rotation and the manual rotation of the driving member can be preferably realized, the damage of the driving unit caused by the fact that the driving member is subjected to a large load when the driving member is driven to rotate by the external force is preferably reduced, and the energy consumption of the driving unit when driving the driving member to rotate is preferably reduced.

Description

Technical Field

[0001] This invention relates to the field of rotary drive technology, and more specifically, to a rotary drive device with a clutch. Background Technology

[0002] Vehicle-mounted screens typically feature both automatic and manual rotation functions, and must maintain stability when stationary after a single rotation. Given these practical requirements, vehicle-mounted screens are currently usually directly connected to rotation drive components such as motor gear assemblies, achieving automatic rotation through these components. These rotation drive components typically lack a self-locking function, allowing for manual rotation of the screen. Furthermore, they are usually equipped with resistance devices to ensure stability of the screen when stationary.

[0003] As mentioned above, when a vehicle's in-vehicle screen is manually rotated, its rotation drive component typically rotates under the influence of the screen. Therefore, when a large impact load is applied directly to the screen, the rotation drive component may be damaged. Furthermore, the rotation drive component needs to overcome resistance when driving the screen to rotate, thus increasing its functional wear. Summary of the Invention

[0004] The present invention provides a rotary drive device with a clutch, which can overcome some or all the defects of the prior art.

[0005] According to the present invention, a rotary drive device with a clutch includes a device body, the device body including a housing with an inner cavity, the inner cavity being provided with a first transmission member, a second transmission member and a drive unit; the second transmission member is used to be fixedly engaged with the drive member, the drive unit is used to drive the first transmission member to rotate to drive the second transmission member to rotate, the drive member is used to rotate under the action of an external force to drive the second transmission member to rotate and remain stationary with the first transmission member; the device body also includes a clutch member for realizing the rotational engagement between the first transmission member and the second transmission member, the clutch member being used to realize the engagement and disengagement between the first transmission member and the second transmission member.

[0006] Through the above, the automatic and manual rotation of the drive component can be better realized, and the damage to the drive unit caused by the large load on the drive component when the drive component is driven to rotate by external force can be better reduced, and the energy consumption of the drive unit when driving the drive component to rotate can be better reduced.

[0007] Preferably, the second transmission component includes an output shaft for fixedly engaging with the driving component, and the clutch component includes an output shaft cam fixedly disposed at one end of the output shaft and a locking sleeve sleeved at one end of the output shaft; the locking sleeve is provided with a first inner hole, the output shaft cam is disposed in the first inner hole and the output shaft cam is rotatably engaged with the locking sleeve;

[0008] The first transmission component has a circular groove at one end, and the clutch component includes a central cam disposed in the circular groove. The central cam is used to rotate with the first transmission component.

[0009] The clutch assembly also includes a shift fork, a first clutch assembly, and a second clutch assembly; the shift fork is used to achieve synchronous rotation between the output shaft cam and the center cam; the first clutch assembly is located between the inner wall of the first inner hole and the output shaft cam, and is used to achieve disengagement between the shift fork and the first transmission component; the second clutch assembly is located between the side wall of the circular groove and the center cam, and is used to achieve disengagement between the locking sleeve and the second transmission component.

[0010] The clutch also includes a limiting component for restricting the rotation of the locking sleeve, and the drive component is used to overcome the effect of the limiting component under the action of an external force to enable the rotation of the second transmission component.

[0011] Through the above, it is possible to achieve a state in which the second transmission component follows the rotation when the first transmission component rotates, and a state in which the first transmission component is stationary when the second transmission component rotates. It is also possible to improve the stability of the drive component when it is stationary while reducing the energy consumption of the drive unit.

[0012] Preferably, the central cam includes a first circular component and N first mounting portions spaced apart on the outer peripheral wall of the first circular component, where N is a positive integer greater than 1; the first clutch assembly includes N sets of first pin assemblies sequentially corresponding to the first mounting portions, and each first pin assembly includes two first cylindrical pins respectively located on both sides of the first mounting portion.

[0013] The outer peripheral wall of the first circular component is provided with a first inclined sidewall, which is inclined from the first mounting part toward the inner sidewall of the circular groove away from the first mounting part.

[0014] The first clutch assembly also includes a first elastic element for driving the two first cylindrical pins to move in opposite directions. Under the action of the first elastic element, the first cylindrical pin slides along the first inclined sidewall until its outer peripheral wall abuts against the inner sidewall of the circular groove.

[0015] The above methods can effectively achieve the engagement and disengagement between the shift fork and the first transmission component.

[0016] Preferably, the first mounting portion has a first mounting hole, and the first elastic element includes a first spring that passes through the first mounting hole. Therefore, it is possible to better achieve a tight fit between the outer peripheral wall of the first cylindrical pin and the inner sidewall of the circular groove, and at the same time, it is easier to install the first elastic element.

[0017] Preferably, the output shaft cam includes a second circular component and N second mounting portions spaced apart on the outer peripheral wall of the second circular component. The second clutch assembly includes N sets of second pin assemblies arranged sequentially corresponding to the second mounting portions. The second pin assembly includes two second cylindrical pins respectively located on both sides of the second mounting portion.

[0018] The outer peripheral wall of the second circular part is provided with a second inclined sidewall, which is inclined from the second mounting part toward the inner wall of the first inner hole away from the second mounting part.

[0019] The second clutch assembly also includes a second elastic element for driving the two second cylindrical pins to move in opposite directions. Under the action of the second elastic element, the second cylindrical pins slide along the second inclined sidewall until their outer peripheral wall abuts against the inner sidewall of the first inner hole.

[0020] The above methods can effectively achieve the engagement and disengagement between the locking sleeve and the second transmission component.

[0021] Preferably, the second mounting portion is provided with a second mounting hole, and the second elastic element includes a second spring that passes through the second mounting hole. Therefore, it is possible to better achieve a tight abutment between the outer peripheral wall of the second cylindrical pin and the inner side wall of the first inner hole, and at the same time, it is easier to install the second elastic element.

[0022] Preferably, the first mounting portion includes a first sidewall, a first arc-shaped sidewall, and a second sidewall continuously arranged along the circumference of the first circular member. The first arc-shaped sidewall is used to rotatably engage with the inner sidewall of the circular groove. A first insertion groove is formed between the inner sidewall of the circular groove, the outer sidewall of the first circular member, and the first sidewall and the second sidewall located at two adjacent first mounting portions.

[0023] The second mounting portion includes a third sidewall, a second arc-shaped sidewall, and a fourth sidewall continuously arranged along the circumference of the second circular component. The second arc-shaped sidewall is used to rotatably engage with the inner sidewall of the first inner hole. A second insertion groove is formed between the inner sidewall of the first inner hole, the outer sidewall of the first circular component, and the third and fourth sidewalls located at adjacent second mounting portions.

[0024] The shift fork includes a circular post and a first insertion part and a second insertion part respectively disposed at both ends of the circular post. There are N first insertion parts and N second insertion parts. The first insertion part is inserted into the first insertion slot and is disposed between two adjacent first cylindrical pins. The second insertion part is inserted into the second insertion slot and is disposed between two adjacent second cylindrical pins.

[0025] Through the above, the following rotation between the shift fork and the output shaft cam, and between the shift fork and the center cam, can be better achieved. This results in the second transmission component rotating when the first transmission component rotates, and the first transmission component remaining stationary when the second transmission component rotates. Therefore, the energy consumption of the drive assembly during operation and the damage during inactivity can be significantly reduced.

[0026] Preferably, the inner cavity is provided with a mounting seat fixed to the side wall of the inner cavity, and the mounting seat is provided with a stepped hole. The first transmission member and the second transmission member are provided at the stepped hole and are used to rotate with the stepped hole. The stepped hole has a first stepped surface and a second stepped surface, and the locking sleeve includes a flange provided at its outer peripheral wall.

[0027] The limiting component includes a first friction plate, a second friction plate, and a pressure plate sequentially sleeved on the outer peripheral wall of the locking sleeve. The first friction plate is fixedly disposed on the first stepped surface, the second friction plate is fixedly disposed on the pressure plate, and the first friction plate and the second friction plate are respectively disposed at both ends of the flange.

[0028] The limiting assembly also includes an adjustment unit for driving the first friction plate and the second friction plate to clamp the flange to a certain degree; the pressure plate achieves the clamping of the first friction plate and the second friction plate onto the flange by maintaining a tendency to move toward the first stepped surface under the action of the adjustment unit.

[0029] As described above, the first friction plate and the second friction plate clamp the flange under the action of the adjusting unit, thereby better restricting the rotation of the locking sleeve.

[0030] Preferably, the second stepped surface is provided with a first threaded hole, the pressure plate is provided with a first rotating hole, the adjustment unit includes a threaded post for threaded engagement with the first threaded hole, and an adjustment spring sleeved on the threaded post. The end of the threaded post that passes through the first rotating hole is provided with an intercepting plate for preventing the adjustment spring from disengaging from the threaded post. The adjustment spring is located between the pressure plate and the intercepting plate. The end of the threaded post that passes through the first rotating hole is also fixedly provided with a rotating part for rotating the threaded post.

[0031] Through the above, the clamping degree of the first and second friction plates on the flange can be better adjusted, thereby better changing the restraining force on the locking sleeve, and consequently better changing the resistance encountered when manually rotating the drive component. That is, the main body of the device can adjust the clamping degree of the first and second friction plates on the flange according to different users' tactile preferences, thus facilitating manual rotation of the drive component by different users. At the same time, compared to existing resistance devices, such as hydraulic resistance devices, the limiting component can better reduce the impact of temperature changes on the magnitude of the restraining force on the locking sleeve.

[0032] Preferably, the drive unit includes a motor and a gear set disposed between the motor output end and the first transmission member, wherein the motor has a self-locking function. Therefore, it can better drive the rotation of the first transmission member and restrict the rotation of the first transmission member. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a rotary drive device with a clutch in a specific embodiment.

[0034] Figure 2 This is an exploded schematic diagram of a rotary drive device with a clutch in a specific embodiment.

[0035] Figure 3 This is a cross-sectional schematic diagram of a rotary drive device with a clutch in a specific embodiment.

[0036] Figure 4 This is a schematic diagram of a rotary drive device with a clutch in a specific embodiment.

[0037] Figure 5 This is a schematic diagram of the structure of the first transmission component, the second transmission component, the drive unit, and the clutch component in a specific embodiment.

[0038] Figure 6 This is a schematic diagram of the shell structure in a specific embodiment.

[0039] Figure 7 This is a schematic diagram of the structure of the first transmission component, the second transmission component, and the clutch component in a specific embodiment.

[0040] Figure 8 for Figure 7 An exploded view of the entire structure.

[0041] Figure 9 for Figure 7 A schematic diagram of the overall structure after removing the limiting components.

[0042] Figure 10 for Figure 9 An exploded view of the entire structure.

[0043] Figure 11 for Figure 9 A cross-sectional schematic diagram of the entire structure.

[0044] Figure 12 This is a schematic diagram of the structure of the first transmission component, the central cam, and the first clutch assembly in a specific embodiment.

[0045] Figure 13 This is a schematic diagram of the structure of the second transmission component, the output shaft cam locking sleeve, and the second clutch assembly in a specific embodiment.

[0046] Figure 14 This is a schematic diagram of the shift fork, the first clutch assembly, and the second clutch assembly in a specific implementation.

[0047] Figure 15 This is a schematic diagram of the central cam in a specific implementation.

[0048] Figure 16 This is a schematic diagram of the fork structure in a specific implementation.

[0049] Figure 17 This is a schematic diagram of the structure of the second transmission component and the output shaft cam in a specific embodiment.

[0050] Figure 18 This is a schematic diagram of a rotary drive device with a clutch installed at the drive component in a specific embodiment. Detailed Implementation

[0051] To further understand the content of this invention, a detailed description of the invention is provided in conjunction with embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0052] like Figure 1-18 As shown, a specific embodiment of the present invention provides a rotary drive device with a clutch, which includes a device body 100. The device body 100 includes a housing 110 with an inner cavity 310. A first transmission member 210, a second transmission member 220 and a drive unit are provided in the inner cavity 310. The second transmission member 220 is fixedly engaged with the drive member. The drive unit is used to drive the first transmission member 210 to rotate so as to drive the second transmission member 220 to rotate. The drive member is used to rotate under the action of an external force so as to drive the second transmission member 220 to rotate and remain stationary with the first transmission member 210. The device body 100 also includes a clutch member for realizing the rotational engagement between the first transmission member 210 and the second transmission member 220. The clutch member is used to realize the engagement and disengagement between the first transmission member 210 and the second transmission member 220.

[0053] Among them, the driving component is the vehicle screen; external force refers to the force that does not rotate the driving component through the driving unit, such as the force applied to the driving component when it is manually rotated or the force experienced by the driving component when it is impacted.

[0054] Through the above, the automatic and manual rotation of the drive component can be better realized, and the damage to the drive unit caused by the large load on the drive component when the drive component is driven to rotate by external force can be better reduced, and the energy consumption of the drive unit when driving the drive component to rotate can be better reduced.

[0055] Specifically, when the drive unit drives the first transmission component 210 to rotate, the second transmission component 220 rotates synchronously with the first transmission component 210 under the action of the clutch, thereby driving the drive component to rotate and realizing the automatic rotation of the drive component, while also reducing the energy consumption of the drive unit. When the drive component is rotated by an external force, the drive component drives the second transmission component 220 to rotate. Under the combined action of the clutch and the drive unit, the first transmission component 210 remains stationary, that is, the drive unit does not rotate with it. Therefore, the drive unit is not disturbed when the drive component rotates under the action of an external force, thus reducing the damage rate of the drive unit.

[0056] Combination Figure 1-10As shown, the second transmission component 220 includes an output shaft 121 for fixedly cooperating with the driving component, and a clutch component including an output shaft cam 321 fixedly disposed at one end of the output shaft 121 and a locking sleeve 221 sleeved at one end of the output shaft 121; the locking sleeve 221 is provided with a first inner hole 810, the output shaft cam 321 is disposed in the first inner hole 810 and the output shaft cam 321 is rotatably engaged with the locking sleeve 221;

[0057] The first transmission member 210 has a circular groove at one end, and the clutch includes a central cam 211 disposed in the circular groove. The central cam 211 is used to rotate with the first transmission member 210.

[0058] The clutch assembly also includes a shift fork 212, a first clutch assembly, and a second clutch assembly. The shift fork 212 is used to achieve synchronous rotation between the output shaft cam 321 and the center cam 211. The first clutch assembly is located between the inner wall of the first inner hole 810 and the output shaft cam 321, and is used to achieve engagement and disengagement between the shift fork 212 and the first transmission member 210. The second clutch assembly is located between the side wall of the circular groove and the center cam 211, and is used to achieve engagement and disengagement between the locking sleeve 221 and the second transmission member 220.

[0059] The clutch also includes a limiting component for restricting the rotation of the locking sleeve 221, and the drive component is used to overcome the effect of the limiting component under the action of an external force to achieve the rotation of the second transmission component 220.

[0060] Through the above, it is possible to achieve a state in which the second transmission member 220 follows the rotation when the first transmission member 210 rotates, and a state in which the first transmission member 210 is stationary when the second transmission member 220 rotates. It is also possible to improve the stability of the drive member when it is stationary while reducing the energy consumption of the drive unit.

[0061] Specifically, when the first transmission component 210 rotates, the central cam 211 rotates under the action of the first clutch assembly, and the output shaft cam 321 rotates under the action of the shift fork 212. That is, the drive component fixed to the output shaft 121 rotates with the central cam 211. Meanwhile, the locking sleeve 221 remains stationary under the combined action of the second clutch assembly and the limiting assembly. When the drive component rotates, the output shaft 121 and the output shaft cam 321 rotate synchronously with the drive component, and the shift fork 212 and the central cam 211 rotate accordingly. Under the action of the second clutch assembly, the locking sleeve 221 overcomes the limiting assembly and rotates with the output shaft cam 321. The first transmission component 210 remains stationary under the action of the drive unit and the first clutch assembly. When the drive component is stationary, because the limiting assembly restricts the rotation of the locking sleeve 221, the output shaft cam 321 is difficult to rotate under the action of the second clutch assembly, thus improving the stability of the drive component when stationary. Furthermore, the main body 100 of the device better avoids the drive unit from driving the locking sleeve 221 to rotate. Therefore, compared with the current rotary drive assembly that drives the vehicle screen to rotate by overcoming the resistance device, the main body 100 of the device can better reduce the energy consumption of the drive unit.

[0062] Combination Figure 1-11 As shown, the central cam 211 includes a first circular part 1020 and N first mounting portions 1021 spaced apart on the outer peripheral wall of the first circular part 1020, where N is a positive integer greater than 1; the first clutch assembly includes N sets of first pin assemblies sequentially corresponding to the first mounting portions 1021, and the first pin assembly includes two first cylindrical pins 213 respectively disposed on both sides of the first mounting portion 1021;

[0063] The first circular component 1020 has a first inclined sidewall 1111 on its outer peripheral wall. The first inclined sidewall 1111 is inclined from the first mounting part 1021 toward the inner sidewall of the circular groove away from the first mounting part 1021.

[0064] The first clutch assembly also includes a first elastic element for driving the two first cylindrical pins 213 to move in opposite directions. Under the action of the first elastic element, the first cylindrical pins 213 slide along the first inclined sidewall 1111 until their outer peripheral wall abuts against the inner sidewall of the circular groove.

[0065] In one specific embodiment of this case, N can be 3.

[0066] Through the above methods, the engagement and disengagement between the shift fork 212 and the first transmission component 210 can be achieved more effectively.

[0067] Specifically, when the first transmission member 210 rotates, the first cylindrical pin 213, which is pressed against the inner side wall of the circular groove, rotates with the first transmission member 210 under the action of friction. When the first cylindrical pin 213 rotates until its outer peripheral wall abuts against the side wall of the first insertion part 331, the first cylindrical pin 213 drives the shift fork 212 to rotate; that is, the shift fork 212 and the first transmission member 210 rotate together.

[0068] Specifically, when the drive assembly is fixed and the shift fork 212 rotates, the first transmission member 210 is fixed by the drive assembly; during the rotation of the shift fork 212, the first cylindrical pin 213 rotates. Since the first transmission member 210 cannot rotate, the first cylindrical pin 213 overcomes the elastic force of the first elastic member and slides along the first inclined sidewall 1111 toward the first elastic member, thereby causing the first cylindrical pin 213 to slide circumferentially along the circular groove, that is, the shift fork 212 separates from the first transmission member 210.

[0069] Combination Figure 10-11 As shown, a first mounting hole 1112 is provided at the first mounting part 1021, and the first elastic element includes a first spring 1113 that passes through the first mounting hole 1112. Therefore, the abutment state between the outer peripheral wall of the first cylindrical pin 213 and the inner side wall of the circular groove can be better achieved, and the installation of the first elastic element is also more convenient.

[0070] Combination Figure 3-13 As shown, the output shaft cam 321 includes a second circular part 1030 and N second mounting portions 1031 spaced apart on the outer peripheral wall of the second circular part 1030. The second clutch assembly includes N sets of second pin assemblies arranged sequentially corresponding to the second mounting portions 1031. The second pin assembly includes two second cylindrical pins 214 respectively located on both sides of the second mounting portion 1031.

[0071] The second circular component 1030 has a second inclined sidewall 1311 on its outer peripheral wall. The second inclined sidewall 1311 is inclined from the second mounting part 1031 toward the inner sidewall of the first inner hole 810 away from the second mounting part 1031.

[0072] The second clutch assembly also includes a second elastic element for driving the two second cylindrical pins 214 to move in opposite directions. Under the action of the second elastic element, the second cylindrical pins 214 slide along the second inclined sidewall 1311 until their outer peripheral wall abuts against the inner sidewall of the first inner hole 810.

[0073] Through the above methods, the engagement and disengagement between the locking sleeve 221 and the second transmission component 220 can be achieved more effectively.

[0074] Specifically, when the driving component rotates, the output shaft 121 and the output shaft cam 321 rotate synchronously with the driving component. The second cylindrical pin 214 rotates with the output shaft cam 321, thereby driving the shift fork 212 to rotate. At this time, the second cylindrical pin 214, which is pressed against the inner wall of the first inner hole 810, overcomes the limiting effect of the limiting component on the locking sleeve 221 under the action of friction, and the locking sleeve 221 rotates with the second cylindrical pin 214. That is, the locking sleeve 221 and the second transmission component 220 rotate together.

[0075] Specifically, when the first transmission member 210 rotates, it drives the shift fork 212 to rotate. The second cylindrical pin 214 follows the rotation of the shift fork 212, which in turn drives the output shaft cam 321 to rotate. The output shaft 121 rotates synchronously with the output shaft cam 321, meaning the second transmission member 220 rotates. Since the limiting component restricts the rotation of the locking sleeve 221 at this time, the second cylindrical pin 214 overcomes the elastic force of the second elastic element and slides towards the second elastic element at the second inclined sidewall 1311, thereby causing the second cylindrical pin 214 to slide circumferentially along the first inner hole 810. That is, the locking sleeve 221 separates from the second transmission member 220.

[0076] Combination Figure 10-17 As shown, a second mounting hole 1710 is provided at the second mounting part 1031, and the second elastic member includes a second spring 1410 that passes through the second mounting hole 1710. Therefore, the abutment state between the outer peripheral wall of the second cylindrical pin 214 and the inner side wall of the first inner hole 810 can be better achieved, and the installation of the second elastic member can be more convenient.

[0077] Combination Figure 2-13 As shown, the first mounting portion 1021 includes a first sidewall 1121, a first arcuate sidewall 1122, and a second sidewall 1123 continuously arranged along the circumference of the first circular member 1020. The first arcuate sidewall 1122 is used to rotatably engage with the inner sidewall of the circular groove. A first insertion groove 1120 is formed between the inner sidewall of the circular groove, the outer sidewall of the first circular member 1020, and the first sidewall 1121 and the second sidewall 1123 provided at two adjacent first mounting portions 1021.

[0078] The second mounting portion 1031 includes a third sidewall 1312, a second arcuate sidewall 1313, and a fourth sidewall 1314 continuously arranged circumferentially along the second circular member 1030. The second arcuate sidewall 1313 is used to rotatably engage with the inner sidewall of the first inner hole 810. A second insertion groove 1310 is formed between the inner sidewall of the first inner hole 810, the outer sidewall of the first circular member 1020, and the third sidewall 1312 and the fourth sidewall 1314 provided at two adjacent second mounting portions 1031.

[0079] The shift fork 212 includes a circular post 330 and a first insertion part 331 and a second insertion part 332 respectively disposed at both ends of the circular post 330. There are N first insertion parts 331 and N second insertion parts 332. The first insertion part 331 is inserted into the first insertion groove 1120 and is disposed between two adjacent first cylindrical pins 213. The second insertion part 332 is inserted into the second insertion groove 1310 and is disposed between two adjacent second cylindrical pins 214.

[0080] Through the above, the following rotation between the shift fork 212 and the output shaft cam 321, and between the shift fork 212 and the center cam 211, can be better achieved. This results in the second transmission member 220 rotating in tandem with the first transmission member 210, and the first transmission member 210 remaining stationary when the second transmission member 220 rotates. Therefore, the energy consumption of the drive assembly during operation and the damage during non-operation can be better reduced.

[0081] Specifically, when the first transmission member 210 rotates, the first cylindrical pin 213 rotates along with the first transmission member 210; when the first cylindrical pin 213 rotates until its outer peripheral wall abuts against the side wall of the first insertion part 331, the first cylindrical pin 213 drives the shift fork 212 to rotate; the shift fork 212 drives the second cylindrical pin 214 to rotate, and the output shaft cam 321 and the output shaft 121 rotate along with the second cylindrical pin 214, thereby driving the drive member to rotate. Due to the effect of the limiting component, the second cylindrical pin 214 slides circumferentially along the first inner hole 810. Therefore, the resistance during the operation of the drive component is reduced, thereby reducing its power consumption.

[0082] Specifically, when the drive component rotates, the output shaft 121 and the output shaft cam 321 rotate synchronously with the drive component, driving the second cylindrical pin 214 to rotate. When the second cylindrical pin 214 rotates until its outer peripheral wall abuts against the side wall of the second insertion part 332, the second cylindrical pin 214 drives the shift fork 212 to rotate, and the first cylindrical pin 213 follows the shift fork 212 to rotate. During the rotation of the shift fork 212, the first cylindrical pin 213 rotates. When the drive assembly is fixed, the first transmission component 210 is restricted from rotating, causing the first cylindrical pin 213 to slide circumferentially along the circular groove; that is, the first transmission component 210 and the drive assembly do not rotate together. Therefore, damage to the drive assembly is reduced.

[0083] Combination Figure 2-16 As shown, a third arc-shaped sidewall 1124 is provided between the first sidewall 1121 and the corresponding first inclined sidewall 1111, and between the second sidewall 1123 and the corresponding first inclined sidewall 1111, for engaging with the outer peripheral wall of the first cylindrical pin 213; when the first cylindrical pin 213 moves to the point where its outer peripheral wall is in contact with the third arc-shaped sidewall 1124, the rotating first cylindrical pin 213 can slide circumferentially along the circular groove;

[0084] A fourth arc-shaped sidewall 1315 is provided between the third sidewall 1312 and the corresponding second inclined sidewall 1311, and between the fourth sidewall 1314 and the corresponding second inclined sidewall 1311, for engaging with the outer peripheral wall of the second cylindrical pin 214; when the second cylindrical pin 214 moves to the point where its outer peripheral wall is in contact with the fourth arc-shaped sidewall 1315, the rotating second cylindrical pin 214 can slide circumferentially along the first inner hole 810;

[0085] A fifth arc-shaped sidewall 1131 is formed between two adjacent first inclined sidewalls 1111. A sixth arc-shaped sidewall 1132 and a seventh arc-shaped sidewall 1133 are provided at the first insertion part 331 for rotating with the fifth arc-shaped sidewall 1131 and the inner sidewall of the circular groove, respectively. An eighth arc-shaped sidewall 1321 is formed between two adjacent second inclined sidewalls 1311. A ninth arc-shaped sidewall 1610 and a tenth arc-shaped sidewall 1421 are provided at the second insertion part 332 for rotating with the eighth arc-shaped sidewall 1321 and the inner sidewall of the first inner hole 810, respectively.

[0086] Both ends of the sixth arc-shaped sidewall 1132 and the seventh arc-shaped sidewall 1133 are provided with a first connecting portion for connecting the sixth arc-shaped sidewall 1132 and the seventh arc-shaped sidewall 1133. The first connecting portion includes an eleventh arc-shaped sidewall 1134 facing the axis of the shift fork 212 and a third oblique sidewall 1135 facing away from the axis of the shift fork 212. The eleventh arc-shaped sidewall 1134 is used to cooperate with the outer peripheral wall of the first cylindrical pin 213, and the third oblique sidewall 1135 is used to restrict the outer peripheral wall of the first cylindrical pin 213 from disengaging from the first oblique sidewall 1111.

[0087] Both ends of the ninth arc-shaped sidewall 1610 and the tenth arc-shaped sidewall 1421 are provided with a second connecting portion for connecting the ninth arc-shaped sidewall 1610 and the tenth arc-shaped sidewall 1421. The second connecting portion includes a twelfth arc-shaped sidewall 1621 facing the axis of the shift fork 212 and a fourth oblique sidewall 1622 facing away from the axis of the shift fork 212. The twelfth arc-shaped sidewall 1621 is used to cooperate with the outer peripheral wall of the second cylindrical pin 214, and the fourth oblique sidewall 1622 is used to restrict the outer peripheral wall of the second cylindrical pin 214 from disengaging from the second oblique sidewall 1311.

[0088] Combination Figure 2-4 As shown, the inner cavity 310 is provided with a mounting seat 410 fixed to the side wall of the inner cavity 310. The mounting seat 410 is provided with a stepped hole 340. The first transmission member 210 and the second transmission member 220 are provided at the stepped hole 340 and are used to rotate with the stepped hole 340. The stepped hole 340 has a first stepped surface 351 and a second stepped surface 352. The locking sleeve 221 includes a flange 323 provided on its outer peripheral wall.

[0089] The limiting component includes a first friction plate 216, a second friction plate 217 and a pressure plate 218 sequentially sleeved on the outer peripheral wall of the locking sleeve 221. The first friction plate 216 is fixedly disposed at the first stepped surface 351, the second friction plate 217 is fixedly disposed at the pressure plate 218, and the first friction plate 216 and the second friction plate 217 are respectively disposed at both ends of the flange 323.

[0090] The limiting assembly also includes an adjustment unit for driving the first friction plate 216 and the second friction plate 217 to clamp the flange 323; the pressure plate 218 achieves the clamping of the first friction plate 216 and the second friction plate 217 onto the flange 323 by maintaining a tendency to move toward the first stepped surface 351 under the action of the adjustment unit.

[0091] Through the above, the first friction plate 216 and the second friction plate 217 clamp the flange 323 under the action of the adjusting unit, thereby better restricting the rotation of the locking sleeve 221. Specifically, the adjusting unit drives the pressure plate 218 to maintain a tendency to move towards the first stepped surface 351, so that the pressure plate 218 and the second friction plate 217 maintain a tendency to drive the flange 323 towards the first stepped surface 351, thus keeping the flange 323 in a state of being clamped by the first friction plate 216 and the second friction plate 217. Due to the friction between the first friction plate 216, the second friction plate 217 and the flange 323 in the clamped state, the rotation of the locking sleeve 221 is restricted.

[0092] Combination Figure 2-7 As shown, a first threaded hole 610 is provided at the second stepped surface 352, and a first rotating hole 710 is provided at the pressure plate 218. The adjustment unit includes a threaded post 510 for threaded engagement with the first threaded hole 610, and an adjustment spring 219 sleeved on the threaded post 510. The end of the threaded post 510 that protrudes from the first rotating hole 710 is provided with an intercepting plate 362 for preventing the adjustment spring 219 from disengaging from the threaded post 510. The adjustment spring 219 is located between the pressure plate 218 and the intercepting plate 362. The end of the threaded post 510 that protrudes from the first rotating hole 710 is also fixedly provided with a rotating part 363 for rotating the threaded post 510.

[0093] Through the above, the clamping degree of the first friction plate 216 and the second friction plate 217 on the flange 323 can be better adjusted, thereby better changing the restraining force on the locking sleeve 221, and thus better changing the resistance encountered when manually rotating the drive component. That is, the device body 100 can adjust the clamping degree of the first friction plate 216 and the second friction plate 217 on the flange 323 according to the different user's feel, thus facilitating the manual rotation of the drive component by different users. At the same time, compared to existing resistance devices, such as hydraulic resistance devices, the limiting component can better reduce the influence of temperature changes on the magnitude of the restraining force on the locking sleeve 221.

[0094] Specifically, under the elastic force of the adjusting spring 219, the pressure plate 218 drives the end faces of the first friction plate 216 and the second friction plate 217 to press against the end face of the flange 323, thereby restricting the rotation of the locking sleeve 221. The adjusting unit adjusts the length of the threaded post 510 located between the second stepped surface 352 and the intercepting plate 362 by rotating the rotating part 363, thereby changing the elastic force of the adjusting spring 219 and thus changing the degree of clamping of the first friction plate 216 and the second friction plate 217 against the flange 323.

[0095] Combination Figure 1-3 As shown, a first bearing 215 is provided between the outer peripheral wall of the output shaft 121 and the inner sidewall of the stepped hole 340; a second bearing 372 is provided at the outer peripheral wall of the first transmission component 210. Therefore, the frictional force experienced by the output shaft 121 and the first transmission component 210 during rotation is reduced more effectively.

[0096] Combination Figure 1-2 As shown, the drive unit includes a motor 130 and a gear set disposed between the output end of the motor 130 and the first transmission member 210. The motor 130 has a self-locking function. Therefore, it can better drive the rotation of the first transmission member 210 and limit the rotation of the first transmission member 210.

[0097] Among them, the motor 130 can be a motor with a self-locking function that is common in the prior art.

[0098] The outer wall of the housing 110 has an opening 122 that connects to the inner cavity 310 and is used for rotatable engagement with the output shaft 121. The inner wall of the opening 122 expands outward in the circumferential direction to form an arc-shaped hole 123. The outer wall of the output shaft 121 has a limiting member 124 for rotatable engagement with the arc-shaped hole 123. Therefore, the rotation angle of the drive component under external force can be better limited.

[0099] In one specific embodiment of this case, the rotating component and the output shaft 121 can be fixed by keying, welding, gluing or other methods.

[0100] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0101] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A rotary drive device with a clutch, characterized in that: The device includes a main body (100), which includes a housing (110) with an inner cavity (310). The inner cavity (310) is provided with a first transmission member (210), a second transmission member (220), and a drive unit. The second transmission member (220) is fixedly engaged with the drive member. The drive unit is used to drive the first transmission member (210) to rotate so as to drive the second transmission member (220) to rotate. The drive member is used to rotate under the action of an external force so as to drive the second transmission member (220) to rotate while the first transmission member (210) remains stationary. The main body (100) also includes a clutch member for realizing the rotational engagement between the first transmission member (210) and the second transmission member (220). The clutch member is used to realize the engagement and disengagement between the first transmission member (210) and the second transmission member (220). The second transmission component (220) includes an output shaft (121) for fixedly cooperating with the drive component. The clutch component includes an output shaft cam (321) fixedly disposed at one end of the output shaft (121) and a locking sleeve (221) sleeved at one end of the output shaft (121). The locking sleeve (221) is provided with a first inner hole (810), and the output shaft cam (321) is disposed in the first inner hole (810) and the output shaft cam (321) is rotatably engaged with the locking sleeve (221). The first transmission member (210) has a circular groove at one end, and the clutch includes a central cam (211) disposed in the circular groove. The central cam (211) is used to rotate with the first transmission member (210). The clutch also includes a shift fork (212), a first clutch assembly, and a second clutch assembly; the shift fork (212) is used to realize synchronous rotation between the output shaft cam (321) and the center cam (211); the first clutch assembly is located between the inner wall of the first inner hole (810) and the output shaft cam (321), and is used to realize the engagement and disengagement between the shift fork (212) and the first transmission member (210); the second clutch assembly is located between the side wall of the circular groove and the center cam (211), and is used to realize the engagement and disengagement between the locking sleeve (221) and the second transmission member (220); The clutch also includes a limiting component for limiting the rotation of the locking sleeve (221), and the drive component is used to overcome the effect of the limiting component under the action of an external force to realize the rotation of the second transmission component (220); The drive unit includes a motor (130) and a gear set located between the output end of the motor (130) and the first transmission member (210). The drive member is a vehicle screen. External force refers to the force that does not rotate the drive member through the drive unit.

2. A rotary drive device with clutch according to claim 1, characterized in that: The central cam (211) includes a first circular part (1020) and N first mounting portions (1021) spaced apart on the outer peripheral wall of the first circular part (1020), where N is a positive integer greater than 1; the first clutch assembly includes N sets of first pin assemblies arranged sequentially corresponding to the first mounting portions (1021), and the first pin assembly includes two first cylindrical pins (213) respectively located on both sides of the first mounting portion (1021). The outer peripheral wall of the first circular part (1020) is provided with a first inclined sidewall (1111), and the first inclined sidewall (1111) is inclined from the first mounting part (1021) toward the inner sidewall of the circular groove away from the first mounting part (1021); The first clutch assembly also includes a first elastic element for driving the two first cylindrical pins (213) to move in opposite directions. Under the action of the first elastic element, the first cylindrical pins (213) slide along the first inclined sidewall (1111) until their outer peripheral wall abuts against the inner sidewall of the circular groove.

3. A rotary drive device with clutch according to claim 2, characterized in that: A first mounting hole (1112) is provided at the first mounting part (1021), and the first elastic element includes a first spring (1113) that passes through the first mounting hole (1112).

4. A rotary drive device with clutch according to claim 2, characterized in that: The output shaft cam (321) includes a second circular part (1030) and N second mounting portions (1031) spaced apart on the outer peripheral wall of the second circular part (1030). The second clutch assembly includes N sets of second pin assemblies arranged sequentially corresponding to the second mounting portions (1031). The second pin assembly includes two second cylindrical pins (214) respectively located on both sides of the second mounting portion (1031). The second circular part (1030) has a second inclined sidewall (1311) on its outer peripheral wall. The second inclined sidewall (1311) is inclined from the second mounting part (1031) toward the inner sidewall of the first inner hole (810) away from the second mounting part (1031). The second clutch assembly also includes a second elastic element for driving the two second cylindrical pins (214) to move in opposite directions. Under the action of the second elastic element, the second cylindrical pins (214) slide along the second inclined sidewall (1311) until their outer peripheral wall abuts against the inner sidewall of the first inner hole (810).

5. A rotary drive device with clutch according to claim 4, characterized in that: A second mounting hole (1710) is provided at the second mounting part (1031), and the second elastic element includes a second spring (1410) that passes through the second mounting hole (1710).

6. A rotary drive device with clutch according to claim 4, characterized in that: The first mounting portion (1021) includes a first sidewall (1121), a first arcuate sidewall (1122), and a second sidewall (1123) continuously arranged along the circumference of the first circular member (1020). The first arcuate sidewall (1122) is used to rotatably engage with the inner sidewall of the circular groove. A first insertion groove (1120) is formed between the inner sidewall of the circular groove, the outer sidewall of the first circular member (1020), and the first sidewall (1121) and the second sidewall (1123) located at two adjacent first mounting portions (1021). The second mounting portion (1031) includes a third sidewall (1312), a second arcuate sidewall (1313), and a fourth sidewall (1314) continuously arranged along the circumference of the second circular member (1030). The second arcuate sidewall (1313) is used to rotatably engage with the inner sidewall of the first inner hole (810). A second insertion groove (1310) is formed between the inner sidewall of the first inner hole (810), the outer sidewall of the first circular member (1020), and the third sidewall (1312) and the fourth sidewall (1314) located at two adjacent second mounting portions (1031). The shift fork (212) includes a circular post (330) and a first insertion part (331) and a second insertion part (332) respectively provided at both ends of the circular post (330). There are N first insertion parts (331) and N second insertion parts (332). The first insertion part (331) is inserted into the first insertion groove (1120) and the first insertion part (331) is located between two adjacent first cylindrical pins (213). The second insertion part (332) is inserted into the second insertion groove (1310) and the second insertion part (332) is located between two adjacent second cylindrical pins (214).

7. A rotary drive device with clutch according to claim 1, characterized in that: The inner cavity (310) is provided with a mounting seat (410) fixed to the side wall of the inner cavity (310). The mounting seat (410) is provided with a stepped hole (340). The first transmission member (210) and the second transmission member (220) are provided at the stepped hole (340) and are used to rotate with the stepped hole (340). The stepped hole (340) has a first stepped surface (351) and a second stepped surface (352). The locking sleeve (221) includes a flange (323) provided at its outer peripheral wall. The limiting component includes a first friction plate (216), a second friction plate (217), and a pressure plate (218) sequentially fitted onto the outer peripheral wall of the locking sleeve (221). The first friction plate (216) is fixedly disposed at the first stepped surface (351), and the second friction plate (217) is fixedly disposed at the pressure plate (218). The first friction plate (216) and the second friction plate (217) are respectively disposed at both ends of the flange (323). The limiting assembly also includes an adjustment unit for driving the first friction plate (216) and the second friction plate (217) to clamp the flange (323); the pressure plate (218) achieves clamping of the first friction plate (216) and the second friction plate (217) onto the flange (323) by maintaining a tendency to move toward the first stepped surface (351) under the action of the adjustment unit.

8. A rotary drive device with clutch according to claim 7, characterized in that: The second stepped surface (352) is provided with a first threaded hole (610), and the pressure plate (218) is provided with a first rotating hole (710). The adjustment unit includes a threaded post (510) for threaded engagement with the first threaded hole (610) and an adjustment spring (219) sleeved on the threaded post (510). The end of the threaded post (510) that passes through the first rotating hole (710) is provided with an intercepting plate (362) for limiting the adjustment spring (219) from disengaging from the threaded post (510). The adjustment spring (219) is located between the pressure plate (218) and the intercepting plate (362). The end of the threaded post (510) that passes through the first rotating hole (710) is also fixedly provided with a rotating part (363) for rotating the threaded post (510).

9. A rotary drive device with clutch according to claim 4, characterized in that: The motor (130) in the gear set has a self-locking function.

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