Driving mechanism capable of controlling self-locking and vehicle-mounted photovoltaic device

Abstract

The invention discloses a driving mechanism capable of controlling self-locking and a vehicle-mounted photovoltaic device, the driving mechanism comprises a screw rod, a sliding part, a magnetic coupling and a power output shaft, the screw rod is rotatably connected to a rack, the periphery of the screw rod is in threaded connection with a load ball device, the sliding part is slidably connected to the rack along the length direction of the screw rod, and the sliding part and the load ball device are fixedly connected with each other; the power output shaft and the lead screw are coaxially arranged and connected through the magnetic coupler, the magnetic coupler comprises a first magnetic coupler half body and a second magnetic coupler half body, and the first magnetic coupler half body and the second magnetic coupler half body are installed on the lead screw and the power output shaft respectively. The power output shaft can be adjusted in a sliding mode in the axial direction and has a first state and a second state. The magnetic coupling is adopted to be matched with the transmission mechanism capable of self-locking, normal driving rotation can be conducted for adjustment in the normal state, manual adjustment can be conducted under the condition that a driver breaks down, and the adjustment flexibility can be improved.

Description

Technical Field

[0001] This invention relates to a transmission device, and more specifically, to a controllable self-locking drive mechanism, and also to a vehicle-mounted photovoltaic device having the drive mechanism. Background Technology

[0002] Extendable photovoltaic (PV) panels can be installed on the roof of the RV. Through a sliding and retracting mechanism, two layers of PV panels can be stacked and folded together, or the panels on both sides can be extended, increasing the area of ​​the PV panels exposed to sunlight and improving the power output of the photovoltaic system. Current PV equipment is driven by a motor, but during operation, the PV panels may slip unexpectedly, resulting in poor stability and potentially affecting the safety of the equipment.

[0003] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a controllable self-locking drive mechanism and an on-board photovoltaic device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a controllable self-locking drive mechanism, comprising a lead screw, a sliding member, a magnetic coupling, and a power output shaft. The lead screw is rotatably connected to a frame, and a load ball bearing is threadedly connected to the outer circumference of the lead screw. The sliding member is slidably connected to the frame along the length direction of the lead screw, and the sliding member and the load ball bearing are fixedly connected to each other. The power output shaft is coaxially arranged with the lead screw and connected through the magnetic coupling. The magnetic coupling includes a magnetic coupling half-body one and a magnetic coupling half-body two, which are respectively installed on the lead screw and the power output shaft. The power output shaft can slide and adjust along the axial direction and has a first state and a second state. In the first state, the power output shaft is relatively close to the lead screw, and the magnetic coupling half-body one and the magnetic coupling half-body two are close to each other and magnetically coupled. In the second state, the power output shaft is relatively far away from the lead screw, and the magnetic coupling half-body one and the magnetic coupling half-body two are far away from each other.

[0006] The invention is further configured to include an adjuster, wherein the power output shaft is fixedly connected to an adjusting disc, and the adjuster and the adjusting disc are linked together to drive the power output shaft to slide axially.

[0007] The present invention is further configured such that the regulator includes a clutch sleeve and an adjusting rod, the clutch sleeve being sleeved outside the adjusting disc and axially linked to it, and the adjusting rod being used to drive the clutch sleeve to move axially.

[0008] The present invention is further configured such that the regulator includes an adjusting motor, a turntable, and an eccentric block. The adjusting motor is located outside the adjusting disc, and the rotating shaft of the adjusting motor is perpendicular to the power output shaft. The turntable is installed at the rotating shaft of the adjusting motor, and an eccentric block is eccentrically installed on the turntable. The eccentric block abuts against the end face of the adjusting disc and is used to push the adjusting disc away from the lead screw.

[0009] The invention is further configured to include a gearbox, wherein the power output shaft is rotatably connected to the gearbox, and both ends of the power output shaft extend out of the gearbox and are capable of axial sliding adjustment.

[0010] The present invention is further configured such that a blocking member is installed on the outer periphery of the power output shaft corresponding to a position inside the gearbox. The blocking member is used to limit the travel of the power output shaft in the direction of the lead screw. In a first state, the blocking member abuts against the interior of the gearbox.

[0011] The invention is further configured to include a drive motor, and the gearbox is provided with a gear mechanism, which is used to transmit the torque of the drive motor and drive the power output shaft to rotate.

[0012] The invention is further configured such that a worm gear mechanism is installed inside the gearbox, and the drive motor and the gear mechanism are transmitted through the worm gear mechanism.

[0013] The present invention is further configured such that the gear mechanism includes a first gear and a second gear, the first gear being coaxially mounted on the power output shaft, the second gear being rotatably mounted in the gearbox, and the first gear and the second gear being mutually connected in a transmission.

[0014] The present invention is further configured such that the worm gear mechanism includes a worm wheel and a worm that mesh and drive each other, the worm wheel is coaxially mounted with a gear, and the worm is mounted on the motor shaft of the drive motor.

[0015] The present invention also provides a vehicle-mounted photovoltaic device, including a photovoltaic panel one and a photovoltaic panel two, wherein the photovoltaic panel one and the photovoltaic panel two are stacked one on top of the other, the photovoltaic panel two is slidable relative to the photovoltaic panel one, and has an open state and a retracted state; the photovoltaic panel two is driven to slide by a controllable self-locking drive mechanism as described above.

[0016] In summary, the present invention has the following beneficial effects:

[0017] By employing a magnetic coupling in conjunction with a self-locking transmission mechanism, the movable photovoltaic panel can be self-locked under normal conditions, maintaining the stability of its adjusted position. Furthermore, the magnetic coupling state of the magnetic coupling can be adjusted via the axially adjustable power output shaft. Under normal conditions, magnetic coupling can be maintained, allowing for normal drive rotation and adjustment. In the event of a driver failure, the magnetic coupling can be disengaged by adjusting the power output shaft, enabling manual pushing and adjustment of the photovoltaic panel, thus improving the flexibility of adjustment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the folded state of a vehicle-mounted photovoltaic device in this embodiment;

[0019] Figure 2 This is a schematic diagram of the deployed state of a vehicle-mounted photovoltaic device in this embodiment;

[0020] Figure 3 This is a schematic diagram of the second state of a controllable self-locking drive mechanism in this embodiment;

[0021] Figure 4 This is a schematic diagram of the first state of a controllable self-locking drive mechanism in this embodiment;

[0022] Figure 5 This is a schematic diagram of the second state of another controllable self-locking drive mechanism in this embodiment;

[0023] Figure 6 This is a schematic diagram of the first state of another controllable self-locking drive mechanism in this embodiment;

[0024] Figure 7 This is a schematic diagram of the structure of a regulator in this embodiment.

[0025] Reference numerals: Photovoltaic panel 1; Slide rail 101; Photovoltaic panel 2; Sliding element 201; Lead screw 3; Load ball bearing 31; Sliding element 4; Magnetic coupling 5; Magnetic coupling half 1 51; Magnetic coupling half 2 52; Power output shaft 6; Adjusting disc 61; Blocking element 62; Snap ring 621; Adjuster 7; Clutch sleeve 71; Adjusting rod 72; Adjusting motor 73; Turntable 74; Eccentric block 75; Gear mechanism 8; Gear 1 81; Gear 2 82; Worm gear mechanism 9; Worm gear 91; Worm 92; Gearbox 10; Drive motor 11. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This embodiment discloses a controllable self-locking drive mechanism, referring to... Figures 3-7 As shown, it includes a lead screw 3, a sliding member 4, a magnetic coupling 5, and a power output shaft 6. The lead screw 3 is rotatably connected to the frame, and a load ball bearing 31 is threadedly connected to the outer circumference of the lead screw 3, forming a threaded lead screw transmission structure between the load ball bearing 31 and the lead screw 3. The sliding member 4 is used to install and support the object to be slidable. It is slidably installed on the frame through components such as slide rails, and the sliding direction is along the length of the lead screw 3.

[0028] The sliding member 4 is fixedly connected to the load ball device 31. During operation, the lead screw 3 rotates, and the lead screw 3 and the load ball device 31 form a threaded screw drive, which can drive the load ball device 31 and the sliding member 4 to slide synchronously and adjust along the slide rail.

[0029] In this embodiment, the power output shaft 6 and the lead screw 3 are coaxially arranged and connected to each other by a magnetic coupling 5. The magnetic coupling 5 includes a magnetic coupling half 51 and a magnetic coupling half 52. The magnetic coupling half 51 is installed at the end of the lead screw 3, and the magnetic coupling half 52 is installed at the end of the power output shaft 6. The magnetic coupling half 51 and the magnetic coupling half 52 are close to each other, which can realize magnetic force transmission.

[0030] The magnetic coupling half-body 51 and magnetic coupling half-body 52 can be adjusted by adjusting their spacing to achieve the adjustment of the magnetic coupling state.

[0031] Specifically, the power output shaft 6 can slide and adjust along the axial direction, and has a first state and a second state. In the first state, the power output shaft 6 is relatively close to the lead screw 3, and the magnetic coupling half 51 and the magnetic coupling half 52 are close to each other and magnetically coupled, which is the coupling state of the magnetic coupling 5. The power output shaft 6 and the lead screw 3 can basically achieve synchronous rotation adjustment.

[0032] In the second state, the power output shaft 6 is relatively far away from the lead screw 3, and the magnetic coupling half 51 and magnetic coupling half 52 are far apart, which is the disconnected state of the magnetic coupling 5. The power output shaft 6 and the lead screw 3 can be rotated and adjusted separately. In this embodiment, the self-locking drive mechanism also includes an adjuster 7. The power output shaft 6 is fixedly connected to an adjusting disc 61, and the adjuster 7 and the adjusting disc 61 are linked together to drive the power output shaft 6 to slide axially.

[0033] When the regulator 7 moves the regulating disc 61 and the power output shaft 6 away from the lead screw 3, the power output shaft 6 enters the second state, the magnetic coupling 5 is in the disengaged state, and the power output shaft 6 and the lead screw 3 can be rotated and adjusted separately. At this time, the sliding member 4 can be manually pushed. During the pushing process, the load ball bearing 31 drives the lead screw 3 to rotate. The rotation of the lead screw 3 is not affected by the basic power output shaft 6, and smooth adaptive rotation can be achieved.

[0034] When the regulator 7 moves the regulating disc 61 and the power output shaft 6 toward the lead screw 3, the power output shaft 6 enters the first state, the magnetic coupling 5 is in a coupled connection state, and the power output shaft 6 and the lead screw 3 can achieve mutual rotation and linkage. At this time, when the sliding member 4 is subjected to a force in the sliding direction, it can be countered by the power output end of the power output shaft 6, preventing the sliding member 4 from accidentally sliding. In order to maintain the stability of the power output shaft 6 in a stationary state, a worm gear mechanism can be used for transmission. During the driving process, the worm drives the worm wheel to rotate, which can realize the power output. In the non-driving state, the worm gear mechanism can achieve relative self-locking to avoid unnecessary accidental slippage.

[0035] In this embodiment, by using a magnetic coupling 5 in conjunction with an axially adjustable power output shaft 6, it is possible to achieve drive under normal conditions, and also to disconnect the magnetic coupling 5 for manual adjustment in the event of a failure in the drive of the magnetic coupling 5, thereby improving the flexibility of adjustment.

[0036] Reference Figure 3 , Figure 4 As shown, the controllable self-locking drive mechanism in this embodiment also includes a gearbox 10, which accommodates and supports various transmission components. A power output shaft 6 is rotatably connected to the gearbox 10, with both ends extending out of the gearbox 10. The power output shaft 6 can slide axially relative to the gearbox 10 for adjustment. Specifically, suitable sliding bearings or bushings can be used between the power output shaft 6 and the gearbox 10 to guide the smooth rotation and sliding of the power output shaft 6; lubricating grease can also be used for lubrication. Furthermore, in this embodiment, the power output shaft 6 is used for adjusting the extension and retraction of the photovoltaic panel and does not require prolonged high-speed rotation; therefore, the power output shaft 6 will not experience excessive wear and can operate normally.

[0037] Reference Figure 3 , Figure 4As shown, a blocking member 62 is installed on the outer periphery of the power output shaft 6, corresponding to a position inside the gearbox 10. For example, a snap ring can be used. The blocking member 62 can limit the axial sliding of the power output shaft 6, restricting its travel in the direction of the lead screw 3. During axial movement of the power output shaft 6 towards the lead screw 3, the blocking member 62 abuts against the interior of the gearbox 10, thus maintaining a first state. In the first state, the magnetic coupling half 51 and the magnetic coupling half 52 of the magnetic coupling 5 approach each other, maintaining a gap between them that allows for magnetic linkage. They magnetically attract each other, causing the power output shaft 6 to experience a magnetic attraction force towards the left. The magnetic coupling of the magnetic coupling 5 is maintained by the blocking member 62's limitation within the gearbox 10.

[0038] Furthermore, this embodiment also includes a drive motor 11, which is fixedly installed in the gearbox 10. A transmission mechanism is installed inside the gearbox 10, which enables the drive motor 11 and the power output shaft 6 to be linked.

[0039] In this embodiment, the transmission mechanism includes a gear mechanism 8 and a worm gear mechanism 9. The gear mechanism 8 and the worm gear mechanism 9 can transmit the torque of the drive motor 11 and drive the power output shaft 6 to rotate. Specifically, the drive motor 11 and the gear mechanism 8 are transmitted through the worm gear mechanism 9. The drive motor 11 directly drives the worm gear mechanism 9, and the power is transmitted through the power between the worm gear mechanism 9 and the gear mechanism 8, which in turn drives the power output shaft 6 to rotate.

[0040] Specifically, the gear mechanism 8 includes gear one 81 and gear two 82. Gear one 81 is coaxially mounted on the power output shaft 6, and gear two 82 is rotatably mounted within the gearbox 10. Gear one 81 and gear two 82 mesh with each other to achieve a transmission connection. Gear one 81 and gear two 82 are compatible spur gears with their axes aligned with the power output shaft 6. Even with a small axial movement of the power output shaft 6, the gear mechanism 8 can still achieve normal meshing transmission. The number of gears in the gear mechanism 8 can be specifically set according to the transmission requirements; it can be two or more to form a suitable meshing transmission structure.

[0041] The worm gear mechanism 9 includes a worm wheel 91 and a worm 92 that mesh and drive each other. The worm 92 is mounted on the motor shaft of the drive motor 11 and is directly driven to rotate by the drive motor 11. The worm wheel 91 is coaxially mounted with gear 82, and the worm wheel 91 and gear 82 maintain synchronous operation through a transmission shaft. The worm wheel 91 and worm 92 mesh and drive each other. When the worm 92 rotates, it can mesh and drive the worm wheel 91 to rotate, thus achieving normal operation. When the transmission is reversed, a self-locking situation is generated, thus preventing the sliding part 4 from slipping unexpectedly. When self-locking is not needed, the power output shaft 6 can be axially adjusted to a second state, causing the magnetic coupling 5 to disengage and the lead screw 3 to rotate smoothly.

[0042] In this embodiment, the lead screw 3 and the load ball bearing 31 do not form a self-locking condition, thereby enabling the load ball bearing 31 and the slider 4 to move smoothly during manual sliding.

[0043] In this embodiment, the regulator 7 can be driven in a variety of ways.

[0044] For example, refer to Figure 3 , Figure 4 As shown, the regulator 7 includes a clutch sleeve 71 and an adjusting rod 72. The clutch sleeve 71 is fitted around the adjusting disc 61 and is axially linked with it. The clutch sleeve 71 is fitted around the outer periphery of the adjusting disc 61, and blocks are formed on both sides of the clutch sleeve 71, thereby enabling axial linkage adjustment. One end of the adjusting rod 72 is connected to the clutch sleeve 71. The movement of the adjusting rod 72 can drive the clutch sleeve 71 to move axially, thereby moving the power output shaft 6 from the first state to the second state. Specifically, the adjusting rod 72 can also be electrically driven, for example, an electric telescopic rod can be used to achieve telescopic movement, driving the power output shaft 6 for adjustment. When switching from the second state to the first state, the adjusting rod 72 pushes in the opposite direction; or it automatically returns to the first state by the magnetic attraction between the two halves of the magnetic coupling 5.

[0045] For example, refer to Figures 5-7 As shown, the regulator 7 includes an regulating motor 73, a turntable 74, and an eccentric block 75. The regulating motor 73 is located outside the regulating disc 61, and its shaft is perpendicular to the power output shaft 6. The turntable 74 is mounted on the shaft of the regulating motor 73, and an eccentric block 75 is eccentrically mounted on the turntable 74, abutting against the end face of the regulating disc 61. When the regulating motor 73 operates, it can drive the turntable 74 to deflect by an angle of 0-90°, and the position of the eccentric block 75 relative to the motor shaft will also deflect. (Refer to...) Figure 5 , 7As shown, when the eccentric block 75 deflects away from the lead screw 3, it can push the adjusting disc 61 away from the lead screw 3, adjusting the power output shaft 6 to the second state, and the magnetic coupling 5 is disconnected. When switching from the second state to the first state, the rotary eccentric block 75 rotates in the opposite direction; or it automatically returns to the first state due to the magnetic attraction between the two halves of the magnetic coupling 5.

[0046] This embodiment also discloses a vehicle-mounted photovoltaic device, which is based on the above embodiment and further refers to... Figure 1 , Figure 2 Please provide a detailed explanation.

[0047] The vehicle-mounted photovoltaic device in this embodiment includes a photovoltaic panel 1 and a photovoltaic panel 2, which are stacked one on top of the other. The photovoltaic panel 1 is located on the lower layer and is fixedly installed on the roof of the vehicle. The photovoltaic panel 2 can slide relative to the photovoltaic panel 1 and has an open state and a retracted state.

[0048] Specifically, a slide rail 101 is installed on the frame on the top of the vehicle. A sliding member 201 is slidably connected to the slide rail 101 and is fixedly connected to the photovoltaic panel 2, so that the photovoltaic panel 2 can slide and adjust relative to the photovoltaic panel 1. In this embodiment, the photovoltaic panel 2 can be driven to slide by the controllable self-locking drive mechanism as described above.

[0049] Specifically, the aforementioned controllable self-locking drive mechanism has a sliding member 4, which is fixedly connected to the photovoltaic panel 2. The sliding direction of the photovoltaic panel 2 is consistent with the moving direction of the sliding member 4, thereby enabling the photovoltaic panel 2 to achieve retraction and extension movements.

[0050] Reference Figure 1 As shown, when photovoltaic panel 2 slides directly above photovoltaic panel 1, the two overlap, allowing photovoltaic panel 2 to retract and reducing the space occupied by the vehicle-mounted photovoltaic device. (Refer to...) Figure 2 As shown, when photovoltaic panel 2 slides to a position offset from photovoltaic panel 1, photovoltaic panel 2 can be unfolded, which can increase the area of ​​photovoltaic panels and improve the efficiency of photovoltaic power generation.

[0051] When the vehicle-mounted photovoltaic device is deployed, the self-locking drive mechanism can achieve self-locking, which can prevent the photovoltaic panel from accidentally slipping and causing displacement.

[0052] When the drive motor 11 of the vehicle-mounted photovoltaic device malfunctions, the power output shaft 6 can be adjusted to the second state to disconnect the magnetic coupling 5, thereby enabling the photovoltaic panel 2 to be manually pushed and manually extended / retracted, improving the adjustment flexibility of the equipment.

[0053] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A controllable self-locking drive mechanism, characterized in that, The assembly includes a lead screw (3), a sliding member (4), a magnetic coupling (5), and a power output shaft (6). The lead screw (3) is rotatably connected to the frame, and a load ball bearing (31) is threaded onto the outer circumference of the lead screw (3). The sliding member (4) is slidably connected to the frame along the length of the lead screw (3), and the sliding member (4) and the load ball bearing (31) are fixedly connected to each other. The power output shaft (6) is coaxially arranged with the lead screw (3) and connected through the magnetic coupling (5). The magnetic coupling (5) includes a magnetic coupling half-body one (51) and a magnetic coupling half-body two (52). The magnetic coupling half-body one (51) and magnetic coupling half-body two (52) are respectively installed on the lead screw (3) and the power output shaft (6); the power output shaft (6) can slide and adjust along the axial direction and has a first state and a second state. In the first state, the power output shaft (6) is relatively close to the lead screw (3), and the magnetic coupling half-body one (51) and magnetic coupling half-body two (52) are close to each other and magnetically coupled; in the second state, the power output shaft (6) is relatively far away from the lead screw (3), and the magnetic coupling half-body one (51) and magnetic coupling half-body two (52) are far away from each other.

2. The controllable self-locking drive mechanism according to claim 1, characterized in that, It also includes an adjuster (7), and the power output shaft (6) is fixedly connected to an adjusting disc (61). The adjuster (7) and the adjusting disc (61) are linked together to drive the power output shaft (6) to slide axially.

3. The controllable self-locking drive mechanism according to claim 2, characterized in that, The regulator (7) includes a clutch sleeve (71) and an adjusting rod (72). The clutch sleeve (71) is fitted outside the adjusting disc (61) and is axially linked with it. The adjusting rod (72) is used to drive the clutch sleeve (71) to move axially.

4. The controllable self-locking drive mechanism according to claim 2, characterized in that, The regulator (7) includes an adjusting motor (73), a turntable (74), and an eccentric block (75). The adjusting motor (73) is located outside the adjusting disc (61). The rotating shaft of the adjusting motor (73) is perpendicular to the power output shaft (6). The turntable (74) is installed at the rotating shaft of the adjusting motor (73). An eccentric block (75) is eccentrically installed on the turntable (74). The eccentric block (75) abuts against the end face of the adjusting disc (61) and is used to push the adjusting disc (61) away from the lead screw (3).

5. A controllable self-locking drive mechanism according to claim 1, characterized in that, It also includes a gearbox (10), the power output shaft (6) is rotatably connected to the gearbox (10), the two ends of the power output shaft (6) extend out of the gearbox (10) and can be axially slidably adjusted.

6. The controllable self-locking drive mechanism according to claim 5, characterized in that, The outer periphery of the power output shaft (6) corresponds to the position inside the gearbox (10) and a blocking member (62) is installed thereon. The blocking member (62) is used to limit the travel of the power output shaft (6) in the direction of the lead screw (3). In the first state, the blocking member (62) abuts against the interior of the gearbox (10).

7. A controllable self-locking drive mechanism according to claim 6, characterized in that, It also includes a drive motor (11), and the gearbox (10) is provided with a gear mechanism (8), which is used to transmit the torque of the drive motor (11) and drive the power output shaft (6) to rotate.

8. A controllable self-locking drive mechanism according to claim 7, characterized in that, The gearbox (10) is also equipped with a worm gear mechanism (9), and the drive motor (11) and the gear mechanism (8) are driven by the worm gear mechanism (9).

9. A controllable self-locking drive mechanism according to claim 8, characterized in that, The gear mechanism (8) includes a first gear (81) and a second gear (82). The first gear (81) is coaxially mounted on the power output shaft (6), and the second gear (82) is rotatably mounted in the gearbox (10). The first gear (81) and the second gear (82) are connected to each other through transmission. The worm gear mechanism (9) includes a worm wheel (91) and a worm (92) that mesh with each other. The worm wheel (91) is coaxially mounted with gear two (82), and the worm (92) is mounted on the motor shaft of the drive motor (11).

10. A vehicle-mounted photovoltaic device, characterized in that, The device includes a photovoltaic panel one (1) and a photovoltaic panel two (2), which are stacked one on top of the other. The photovoltaic panel two (2) can slide relative to the photovoltaic panel one (1) and has an open state and a retracted state. The photovoltaic panel two (2) is driven to slide by a controllable self-locking drive mechanism as described in any one of claims 1-9.

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