Electric pivot assembly with clutch and lock mechanism

Abstract

The utility model discloses a motorized pivot ware assembly with clutch locking mechanism, including pivot ware body, still include drive arrangement, and the output shaft of drive arrangement is connected with fuselage axle through clutch locking mechanism, clutch locking mechanism includes locking lever, the frictional torsion assembly of fuselage axle and locking lever linkage cooperation is set up on locking lever, and the other end of locking lever is connected with locking head, and clutch locking mechanism still includes the unlocking head of linkage connection with drive arrangement output shaft, clutch locking mechanism still includes the locking limit cylinder of setting in unlocking head and locking head. The utility model discloses through the exquisite locking mechanism and clutch mechanism design, realizes the electric open -close screen function while, effectively avoided the reverse torque impact of causing to drive arrangement when manual operation, thereby has improved the reliability and service life of system significantly.

Description

Technical Field

[0001] This utility model relates to the field of pivot technology, and in particular to an electric pivot assembly with a clutch locking mechanism. Background Technology

[0002] The pivot is a key mechanical component connecting the laptop screen to the chassis, its core function being to enable smooth opening and closing of the screen and provide stable angular support. Currently, most pivots on the market are manually driven. Taking a typical dual-axis pivot as an example, one axis is connected to the screen, and the other axis is connected to the chassis. By manually rotating the screen, the mechanical cooperation between the two axes enables the screen to open and close at any angle and be reliably positioned.

[0003] To improve ease of operation and user experience, some new pivots have evolved into automatically driven structures. In this type of design, the opening and closing of the screen is performed by a drive device (such as a motor), which drives the rotation of a shaft connected to the device body. Through the cooperation between the two shafts, the screen can be automatically adjusted and stably supported at any angle. However, this type of automatically driven pivot has certain technical drawbacks in practical use: when the user attempts to manually adjust the screen angle, the reverse torque generated by the transmission between the two shafts is transmitted to the drive device, potentially damaging its internal structure (such as gearboxes and other transmission components), affecting the device's reliability and lifespan. Utility Model Content

[0004] The purpose of this invention is to overcome the aforementioned problems of the prior art and provide an electric pivot assembly with a clutch locking mechanism, which can effectively solve the potential damage to the drive device caused by manual operation, and has high reliability, operational safety and structural stability, thus comprehensively improving the service life of the laptop pivot and the user experience.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] An electric pivot assembly with a clutch locking mechanism includes a pivot body, the pivot body including a screen shaft and a body shaft cooperating with the screen shaft, and a drive unit, the output shaft of the drive unit being connected to the body shaft via the clutch locking mechanism;

[0007] The clutch locking mechanism includes a locking rod; one end of the locking rod is rotatably connected to the body shaft, and a friction torque component is sleeved on the locking rod to enable the body shaft and the locking rod to move and cooperate; the other end of the locking rod is connected to a locking head, and a locking notch is opened on the outer ring surface of the locking head, and the middle of the locking notch has an unlocking section with an outer diameter lower than the outer diameter of the locking notch.

[0008] The clutch locking mechanism also includes an unlocking head that is connected to the output shaft of the drive device. The unlocking head has two axially protruding unlocking linkage blocks that are inserted into the locking notch. The total arc length of the two unlocking linkage blocks is less than the arc length of the locking notch, and the arc length of the distance between the two unlocking linkage blocks is not greater than the arc length of the unlocking section.

[0009] The clutch locking mechanism also includes a locking limiting cylinder sleeved on the unlocking head and the locking head. The inner wall surface of the locking limiting cylinder, the outer ring surface of the locking notch, and the two unlocking linkage blocks together form a clutch area. Two clutch pins are movably arranged in the clutch area. The diameter of the clutch pins is greater than the distance between the outer ring surface of the locking notch and the inner wall surface of the locking limiting cylinder, and less than the distance between the outer ring surface of the unlocking section and the inner wall surface of the locking limiting cylinder. A clutch elastic element is provided between the two clutch pins. The clutch elastic element acts on the two clutch pins, so that the two clutch pins abut against the two unlocking linkage blocks respectively.

[0010] Furthermore, the locking head also has a limiting notch facing the locking notch. The locking notch and the limiting notch together make the locking head form two locking linkage blocks that circumferentially bulge outwards. The two locking linkage blocks can respectively contact and cooperate with the two unlocking linkage blocks.

[0011] The unlocking head also has an unlocking limiting block that protrudes axially and is inserted into the limiting notch. The arc length difference between the unlocking limiting block and the limiting notch is adapted to the arc length difference between the two unlocking linkage blocks and the locking notch.

[0012] Furthermore, each of the two clutch pins is provided with a clutch limiting post at its opposite end, and the two ends of the clutch elastic element are respectively sleeved on the two clutch limiting posts.

[0013] Furthermore, the end of the fuselage shaft is connected to a connector, which has a fuselage friction disc and an insertion post connected to the fuselage friction disc and having a circular cross-section;

[0014] One end of the locking rod has a locking friction disc that can be frictionally interfered with the friction disc of the machine body, and the other end of the locking rod also has an insertion groove that can be inserted and rotated to engage with the insertion post.

[0015] Furthermore, the friction torque assembly includes a locking friction plate sleeved on the locking rod and a plurality of torque plates located between the locking friction disc and the locking friction plate;

[0016] The friction torque assembly also includes a friction limiting cylinder sleeved on the body friction disc and locking rod, which is used to wrap the locking friction disc, locking friction plate and torque plate. The friction limiting cylinder ensures that the locking friction disc and the body friction disc are in close contact.

[0017] Furthermore, the pivot body has a fixed outer shell, and the locking limiting cylinder is connected to the fixed outer shell;

[0018] Both the screen shaft and the body shaft are rotatably connected to the fixed housing. Two transmission shafts located between the screen shaft and the body shaft are also rotatably connected to the fixed housing. Transmission gears that mesh sequentially are sleeved on the screen shaft, the two transmission shafts, and the body shaft.

[0019] Furthermore, a fixing bracket connected to the fixed housing is sleeved on the screen shaft, and an adjusting nut is threaded onto the end of the screen shaft;

[0020] A backlash torque assembly is provided between the adjusting nut and the fixing bracket on the screen axis. The backlash torque assembly includes two backlash friction plates spaced apart and several backlash torque plates located between the two backlash friction plates.

[0021] Furthermore, a screen friction pad is also sleeved on the screen axis, located between the fixed housing and the fixed frame.

[0022] Furthermore, an angle encoder is provided at the end of the body shaft.

[0023] Furthermore, both the fixed outer shell and the fixed frame are provided with fuselage connecting ears.

[0024] This invention offers the following advantages: Through its ingenious locking and clutch mechanisms, it effectively avoids reverse torque impact on the drive device during manual operation while simultaneously enabling the electric opening and closing of the screen, thus significantly improving the system's reliability and lifespan. Its core advantages can be summarized as follows:

[0025] 1. Safety compatibility between electric and manual modes: In electric drive mode, the drive unit drives the locking head to rotate synchronously through the unlocking head, and then transmits torque to the body shaft through the friction torque component to achieve smooth opening and closing of the screen; in manual operation mode, the clutch mechanism can respond quickly and switch to the locked state to prevent the locking head from driving the unlocking head to rotate; when the manual force exceeds the set threshold, the friction torque component allows the locking rod to slip and rotate between the body shaft, thereby isolating the torque from the drive unit and preventing damage to its internal transmission structure;

[0026] 2. Reliable and sensitive clutch locking mechanism: The structure adopts a combination of two clutch pins, a locking notch, and an unlocking section. After the electric drive stops, the clutch elastic element can automatically reset, allowing the clutch pins to quickly enter the locking position and lock between the locking limit cylinder and the locking notch, forming a mechanical interlock. This locking mechanism can be effectively triggered in both the manual opening and closing of the screen, ensuring protection of the drive device during manual operation in any direction. Attached Figure Description

[0027] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in describing the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments recorded in this utility model. Those skilled in the art can derive other drawings from the following drawings without any creative effort.

[0028] Figures 1-2 This is a schematic diagram of a specific embodiment of the electric pivot assembly with a clutch locking mechanism according to the present invention.

[0029] Figure 3 A schematic diagram of the structure of the electric pivot assembly with clutch locking mechanism according to this utility model with the fixed outer shell removed;

[0030] Figure 4 This is a cross-sectional view of a specific embodiment of the clutch locking mechanism in the electric pivot assembly with clutch locking mechanism according to the present invention.

[0031] Figure 5 This is a schematic diagram of a specific embodiment of the locking head in the electric pivot assembly with clutch locking mechanism described in this utility model;

[0032] Figure 6 This is a schematic diagram of a specific embodiment of the unlocking head in the electric pivot assembly with clutch locking mechanism described in this utility model;

[0033] Figure 7 This is a schematic diagram of a specific embodiment of the locking rod and friction torque component in the electric pivot assembly with clutch locking mechanism described in this utility model;

[0034] Figure 8 This is a schematic diagram of a specific embodiment of the locking rod in the electric pivot assembly with clutch locking mechanism described in this utility model;

[0035] Figure 9 This is a schematic diagram of a specific embodiment of the body shaft and connector in the electric pivot assembly with clutch locking mechanism described in this utility model;

[0036] Figure 10 This is a schematic diagram of the locking head and unlocking head in a specific embodiment of the electric pivot assembly with clutch locking mechanism described in this utility model in the zero position state;

[0037] Figure 11-12 This is a schematic diagram of the structure of the unlocking head and the locking head when the unlocking head is driven to rotate by the driving device, according to a specific embodiment of the electric pivot assembly with clutch locking mechanism described in this utility model.

[0038] Figure 13 This is a schematic diagram of the structure of the unlocking head and locking head of a specific embodiment of the electric pivot assembly with clutch locking mechanism described in this utility model when the screen is manually driven to rotate.

[0039] The component names corresponding to the reference numerals in the attached drawings are as follows: 1. Screen hinge; 2. Body hinge; 3. Drive unit; 4. Locking rod; 5. Locking head; 6. Unlocking section; 7. Locking linkage block; 8. Locking notch; 9. Limiting notch; 10. Unlocking head; 11. Unlocking linkage block; 12. Unlocking limit block; 13. Locking limit cylinder; 14. Clutch area; 15. Clutch pin; 16. Clutch elastic element; 17. Clutch limit post; 8. Connector; 19. Body friction disc; 20. Insertion post; 21. Insertion groove; 22. Locking friction disc; 23. Friction limit cylinder; 24. Locking friction plate; 25. Torque plate; 26. Fixed housing; 27. Drive shaft; 28. Drive gear; 29. ​​Fixing bracket; 30. Screen friction plate; 31. Adjusting nut; 32. Backlash friction plate; 33. Backlash torque plate; 34. Angle encoder; 35. Body connecting ear. Detailed Implementation

[0040] To enable those skilled in the art to better understand this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] Example 1

[0042] like Figures 1 to 13 As shown, an electric pivot assembly with a clutch locking mechanism includes a pivot body, which includes a screen shaft 1 and a body shaft 2 that cooperates with the screen shaft 1, and also includes a drive device 3. The output shaft of the drive device 3 is connected to the body shaft 2 through the clutch locking mechanism.

[0043] The clutch locking mechanism includes a locking rod 4; one end of the locking rod 4 is rotatably connected to the body shaft 2, and a friction torque component is sleeved on the locking rod 4 to enable the body shaft 2 and the locking rod 4 to move together; the other end of the locking rod 4 is connected to a locking head 5, and a locking notch 8 is opened on the outer ring surface of the locking head 5, and the middle part of the locking notch 8 has an unlocking section 6 with an outer diameter lower than the outer diameter of the locking notch 8;

[0044] The clutch locking mechanism also includes an unlocking head 10 that is connected to the output shaft of the drive device 3. The unlocking head 10 has two axially protruding unlocking linkage blocks 11 that are inserted into the locking notch 8. The total arc length of the two unlocking linkage blocks 11 is less than the arc length of the locking notch 8, and the arc length of the distance between the two unlocking linkage blocks 11 is not greater than the arc length of the unlocking section 6.

[0045] The clutch locking mechanism also includes a locking limiting cylinder 13 sleeved on the unlocking head 10 and the locking head 5. The inner wall surface of the locking limiting cylinder 13, the outer ring surface of the locking notch 8, and the two unlocking linkage blocks 11 together form a clutch area 14. Two clutch pins 15 are movably arranged in the clutch area 14. The diameter of the clutch pins 15 is greater than the distance between the outer ring surface of the locking notch 8 and the inner wall surface of the locking limiting cylinder 13, and less than the distance between the outer ring surface of the unlocking section 6 and the inner wall surface of the locking limiting cylinder 13. A clutch elastic element 16 is arranged between the two clutch pins 15. The clutch elastic element 16 acts on the two clutch pins 15, so that the two clutch pins 15 respectively abut against the two unlocking linkage blocks 11.

[0046] In this embodiment, the drive device 3 is a geared motor. The clutch elastic element 16 is a compression spring.

[0047] In application, the pivot body is connected to the laptop body, and the screen axis 1 is connected to the laptop screen. In this way, the pivot body can achieve relative rotation between the screen and the body.

[0048] Preferably, the locking head 5 also has a limiting notch 9 facing the locking notch 8. The locking notch 8 and the limiting notch 9 together make the locking head 5 form two circumferentially protruding locking linkage blocks 7. The two locking linkage blocks 7 can respectively contact and cooperate with the two unlocking linkage blocks 11.

[0049] The unlocking head 10 also has an unlocking limiting block 12 that protrudes axially and is inserted into the limiting notch 9. The arc length difference between the unlocking limiting block 12 and the limiting notch 9 is adapted to the arc length difference between the two unlocking linkage blocks 11 and the locking notch 8.

[0050] In the zero position state, such as Figure 10 As shown, the positional relationship between the unlocking head 5 and the unlocking head 10 is configured as follows: the two unlocking linkage blocks 11 are located in the area where the unlocking section 6 is located, and the two unlocking linkage blocks 11 are respectively separated from the two ends of the locking notch 8 by a certain distance s, and the two ends of the unlocking limit block 12 are respectively separated from the two ends of the limit notch 9 by a certain distance s.

[0051] When the screen needs to be rotated electrically, the drive device 3 is activated to drive the unlocking head 10 to rotate. Taking opening the screen as an example, the unlocking head 10 needs to be rotated clockwise by the drive device 3 (the arc length of the movement is s) until the unlocking linkage block 11 on the right side contacts the locking linkage block 7 on the right side. Within this displacement range, such as... Figure 11 and Figure 12 As shown, the clutch pin 15 on the right will remain in its original position due to inertia, while the clutch pin 15 on the left will move with the movement of the left unlocking linkage block 11. Thus, both clutch pins 15 remain within the area of ​​the unlocking section 6. Since the diameter of the clutch pin 15 is smaller than the distance between the unlocking section 6 and the locking limit cylinder 13, the clutch pin 15 is in the unlocked state. The unlocking head 10 will then drive the locking head 5 to rotate, which in turn drives the locking rod 4 to rotate. Under the interference of the friction torque component, the body shaft 2 rotates, and through the cooperation of the body shaft 2 and the screen shaft 1, the screen opens and rotates. The same principle applies to electrically closing screens.

[0052] When the drive device 3 is stopped, the two clutch pins 15 will return to their respective limit positions under the action of the clutch elastic element 16, such as Figure 12 As shown, the clutch pin 15 on the left side abuts against the unlocking linkage block 11 on the left side under the support of the clutch elastic element 16, while the clutch pin 15 on the right side is at its extreme position away from the unlocking section 6 under the support of the clutch elastic element 16. This extreme position causes the right clutch pin 15 to be locked between the inner wall surface of the locking limit cylinder 13 and the outer ring surface of the locking notch 8. At this time, the clutch pin 15 is in a locked state. If the screen is manually closed and rotated without the unlocking head 10 moving, the screen axis 1 and the body axis 2 will cooperate to open the door. When the screen shaft 1 rotates counterclockwise, the interference of the friction torque component will cause the locking lever 4 to rotate counterclockwise, which in turn will cause the locking head 5 to rotate counterclockwise. The locking action of the right clutch pin 15 will restrict the rotation of the locking head 5 in this direction. Thus, the locking head 5 cannot drive the unlocking head 10 to rotate counterclockwise. When the screen is closed with continuous force, when the force is greater than the supporting force of the friction torque component, slippage will occur between the body shaft 2 and the locking lever 4, thereby achieving a closed rotation without damaging the drive device 3.

[0053] Unlock the first 10 such Figure 12 When the screen is not in position, manually opening and rotating it will cause the screen shaft 1 to rotate clockwise due to the interaction between the screen shaft 1 and the body shaft 2. Under the interference of the friction torque component, this will cause the locking lever 4 to rotate clockwise, which in turn will cause the locking head 5 to rotate clockwise. During the rotation of the locking head 5, the locking linkage block 7 on the left side will gradually approach the unlocking linkage block 11 on the left side, and the unlocking section 6 will gradually disengage from the clutch pin 15 on the left side. Figure 13As shown, at this time, the left clutch pin 15 will gradually lock between the inner wall surface of the locking limit cylinder 13 and the outer ring surface of the locking notch 8 until the left clutch pin 15 is locked. This will restrict the rotation of the locking head 5 in this direction. Thus, the locking head 5 cannot drive the unlocking head 10 to rotate in the clockwise direction. When the screen is continuously lifted with force, when the force is greater than the supporting force of the friction torque component, the body shaft 2 and the locking rod 4 will also slip. This will enable the screen to be lifted and rotated without damaging the drive device 3.

[0054] In summary, the drive device 3 can drive the unlocking head 10 and the locking head 5 to rotate clockwise (open) and counterclockwise (close) within the locking limit cylinder 13. With the help of the friction torque component, the locking rod 4 transmits the rotational torque to the body shaft 2 to achieve the corresponding screen rotation. When the screen is manually rotated, the locking head 5 will rotate clockwise (open) and counterclockwise (close) relative to the unlocking head 10, but both will cause the clutch pin 15 to be locked. Thus, when the manual force is greater than the frictional force between the locking rod 4 and the body shaft 3, the body shaft 2 will slip and rotate relative to the locking rod 4. This effectively prevents the locking head 5 from driving the unlocking head 10 to rotate and damaging the drive device 3.

[0055] The design of the unlocking limit block 12 and the limiting notch 9 enhances the stability of the engagement between the locking head 5 and the unlocking head 10. Specifically, this engagement involves a small-angle relative rotational connection and a large-angle linkage connection between the two. The locking limit cylinder 13, in addition to limiting the radial position of the clutch pin 15, also limits the axial position of the unlocking head 10 and the locking head 5, thereby improving the stability of their engagement.

[0056] To achieve a stable connection between the clutch elastic element 16 and the two clutch pins 15, preferably, each of the two clutch pins 15 is provided with a clutch limiting post 17 at its opposite ends, and the two ends of the clutch elastic element 16 are respectively sleeved on the two clutch limiting posts 17.

[0057] Preferably, the end of the fuselage shaft 2 is connected to a connector 18, the connector 18 having a fuselage friction disc 19 and an insertion post 20 connected to the fuselage friction disc 19 and having a circular cross-section;

[0058] One end of the locking rod 4 has a locking friction disc 22 that can be frictionally interfered with the friction disc 19 of the body. The other end of the locking rod 4 also has an insertion groove 21 that can be inserted into and rotated with the insertion post 20.

[0059] In this embodiment, when the locking head 5 and the unlocking head 10 rotate synchronously, the frictional engagement between the friction torque assembly and the body friction disc 19 and the locking friction disc 22 can realize the linkage rotation between the body shaft 2 and the locking rod 4; when the locking head 5 is locked due to the transmission pin 15, when the manual force is greater than the frictional force between the friction torque assembly and the body friction disc 19 and the locking friction disc 22, the engagement between the insertion groove 21 and the insertion post 20 can realize the slippage rotation (relative rotation) between the body shaft 2 and the locking rod 4.

[0060] Preferably, the friction torque assembly includes a locking friction plate 24 sleeved on the locking rod 4 and a plurality of torque plates 25 located between the locking friction disc 22 and the locking friction plate 24;

[0061] The friction torque assembly also includes a friction limiting cylinder 23 sleeved on the body friction disc 19 and the locking rod 4, which is used to wrap the locking friction disc 22, the locking friction plate 24 and the torque plate 25. The friction limiting cylinder 23 ensures that the locking friction disc 22 and the body friction disc 19 are in close contact.

[0062] In this embodiment, the friction limiting cylinder 23 is provided so that the locking friction plate 24 and the torsion plate 25 always apply a force to the locking friction disc 22 against the body friction disc 19. In this way, the friction between the locking friction disc 22 and the body friction disc 19 can be increased, thereby ensuring the linkage rotation between the body shaft 2 and the locking rod 4.

[0063] Preferably, the pivot body has a fixed housing 26, and the locking limiting cylinder 13 is connected to the fixed housing 26;

[0064] Both the screen shaft 1 and the body shaft 2 are rotatably connected to the fixed housing 26. Two transmission shafts 27 located between the screen shaft 1 and the body shaft 2 are also rotatably connected to the fixed housing 26. Transmission gears 28 are sleeved on the screen shaft 1, the two transmission shafts 27 and the body shaft 2, and meshing with each other in sequence.

[0065] In this embodiment, through the meshing of four transmission gears 28, the screen shaft 1 and the body shaft 2 can perform opposing closed rotations and opposing open rotations. The locking limit cylinder 13 is connected to the fixed housing 26, which can improve the stability of the locking limit cylinder 13, thereby improving the locking and unlocking effect of the clutch pin 15 on the locking head 5.

[0066] Preferably, a fixing bracket 29 connected to the fixing housing 26 is sleeved on the screen shaft 1, and an adjusting nut 31 is threaded onto the end of the screen shaft 1;

[0067] A backlash torque assembly is provided between the adjusting nut 31 and the fixing bracket 29 on the screen axis 1. The backlash torque assembly includes two backlash friction plates 32 spaced apart and a plurality of backlash torque plates 33 located between the two backlash friction plates 32.

[0068] In this practice, the engagement between multiple transmission gears 28 will inevitably have backlash, which can easily cause the screen to shake. The backlash torque component can provide interference force through the backlash friction plate 32 and backlash torque plate 33, thereby eliminating the shaking problem caused by the aforementioned backlash.

[0069] Preferably, a screen friction piece 30 is also sleeved on the screen shaft 1, located between the fixed housing 26 and the fixed frame 29. The screen friction piece 30 can improve the stability of the fixed frame 29 and the screen shaft 1.

[0070] Preferably, an angle encoder 34 is provided at the end of the body shaft 2. The angle encoder 34 is used to sense the rotation angle of the screen in real time, and based on this, issues corresponding execution commands to the drive device 3.

[0071] Preferably, both the fixed housing 26 and the fixed bracket 29 are provided with body connection ears 35. The body connection ears 35 can improve the stability of the connection between the fixed housing 26 and the laptop body.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An electric pivot assembly with a clutch locking mechanism, comprising a pivot body, the pivot body including a screen shaft (1) and a body shaft (2) cooperating with the screen shaft (1), characterized in that: It also includes a drive unit (3), the output shaft of which is connected to the fuselage shaft (2) via a clutch locking mechanism; The clutch locking mechanism includes a locking rod (4); one end of the locking rod (4) is rotatably connected to the body shaft (2), and a friction torque component is sleeved on the locking rod (4) to enable the body shaft (2) and the locking rod (4) to move together; the other end of the locking rod (4) is connected to a locking head (5), and a locking notch (8) is provided on the outer ring surface of the locking head (5), and the middle part of the locking notch (8) has an unlocking section (6) with an outer diameter lower than the outer diameter of the locking notch (8); The clutch locking mechanism also includes an unlocking head (10) that is connected to the output shaft of the drive device (3). The unlocking head (10) has two axially protruding unlocking linkage blocks (11) that are inserted into the locking notch (8). The total arc length of the two unlocking linkage blocks (11) is less than the arc length of the locking notch (8), and the arc length of the distance between the two unlocking linkage blocks (11) is not greater than the arc length of the unlocking section (6). The clutch locking mechanism also includes a locking limit cylinder (13) sleeved on the unlocking head (10) and the locking head (5). The inner wall surface of the locking limit cylinder (13), the outer ring surface of the locking notch (8) and the two unlocking linkage blocks (11) together form a clutch area (14). Two clutch pins (15) are movably arranged in the clutch area (14). The diameter of the clutch pins (15) is greater than the distance between the outer ring surface of the locking notch (8) and the inner wall surface of the locking limit cylinder (13), and less than the distance between the outer ring surface of the unlocking section (6) and the inner wall surface of the locking limit cylinder (13). A clutch elastic element (16) is provided between the two clutch pins (15). The clutch elastic element (16) acts on the two clutch pins (15), so that the two clutch pins (15) abut against the two unlocking linkage blocks (11) respectively.

2. The electric pivot assembly with a clutch locking mechanism according to claim 1, characterized in that: The locking head (5) also has a limiting notch (9) facing the locking notch (8). The locking notch (8) and the limiting notch (9) together make the locking head (5) form two locking linkage blocks (7) with outward circumference. The two locking linkage blocks (7) can respectively contact and cooperate with the two unlocking linkage blocks (11). The unlocking head (10) also has an unlocking limiting block (12) that protrudes outward and is inserted into the limiting notch (9). The arc length difference between the unlocking limiting block (12) and the limiting notch (9) is adapted to the arc length difference between the two unlocking linkage blocks (11) and the locking notch (8).

3. The electric pivot assembly with a clutch locking mechanism according to claim 1, characterized in that: Both clutch pins (15) are provided with clutch limiting posts (17) at their opposite ends, and the two ends of the clutch elastic element (16) are respectively sleeved on the two clutch limiting posts (17).

4. The electric pivot assembly with a clutch locking mechanism according to claim 1, characterized in that: The end of the fuselage shaft (2) is connected to a connector (18), which has a fuselage friction disc (19) and an insertion post (20) connected to the fuselage friction disc (19) and having a circular cross-section. One end of the locking rod (4) has a locking friction disc (22) that can be frictionally interfered with the friction disc (19) of the fuselage. The other end of the locking rod (4) also has an insertion groove (21) that can be inserted into and rotated with the insertion post (20).

5. The electric pivot assembly with a clutch locking mechanism according to claim 4, characterized in that: The friction torque assembly includes a locking friction plate (24) sleeved on the locking rod (4) and a plurality of torque plates (25) located between the locking friction disc (22) and the locking friction plate (24). The friction torque assembly also includes a friction limiting cylinder (23) sleeved on the fuselage friction disc (19) and locking rod (4) and used to wrap the locking friction disc (22), locking friction plate (24) and torque plate (25). The friction limiting cylinder (23) makes the locking friction disc (22) and the fuselage friction disc (19) in close contact.

6. The electric pivot assembly with a clutch locking mechanism according to any one of claims 1-5, characterized in that: The pivot body has a fixed outer shell (26), and the locking limit cylinder (13) is connected to the fixed outer shell (26); Both the screen shaft (1) and the body shaft (2) are rotatably connected to the fixed housing (26). The fixed housing (26) is also rotatably connected to two transmission shafts (27) located between the screen shaft (1) and the body shaft (2). The screen shaft (1), the two transmission shafts (27) and the body shaft (2) are fitted with sequentially meshing transmission gears (28).

7. The electric pivot assembly with a clutch locking mechanism according to claim 6, characterized in that: A fixing bracket (29) connected to the fixing housing (26) is sleeved on the screen shaft (1), and an adjusting nut (31) is threaded onto the end of the screen shaft (1). The screen shaft (1) is provided with a backlash torque assembly between the adjusting nut (31) and the fixing bracket (29). The backlash torque assembly includes two backlash friction plates (32) spaced apart and several backlash torque plates (33) located between the two backlash friction plates (32).

8. The electric pivot assembly with a clutch locking mechanism according to claim 7, characterized in that: A screen friction piece (30) is also sleeved on the screen shaft (1) between the fixed outer shell (26) and the fixed frame (29).

9. The electric pivot assembly with a clutch locking mechanism according to claim 6, characterized in that: An angle encoder (34) is provided at the end of the body shaft (2).

10. The electric pivot assembly with a clutch locking mechanism according to claim 7, characterized in that: Both the fixed outer shell (26) and the fixed frame (29) are provided with fuselage connecting ears (35).

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