Transmission assembly, turnover screen driving mechanism and control method of turnover screen driving mechanism

Abstract

The invention relates to a transmission assembly, a turnover screen driving mechanism and a control method of the turnover screen driving mechanism. The transmission assembly comprises a driving piece, a driven piece and a breakable connecting piece, and the driving piece is configured to be capable of reciprocating in the first direction; the driven part is movably arranged relative to the driving part in the first direction and is configured to synchronously move along with the driving part in the first direction; the breakable connecting piece is in breakable transmission connection between the driving piece and the driven piece, the breakable connecting piece is provided with rated force, and when the transmission force between the driving piece and the driven piece is larger than the rated force, the breakable connecting piece breaks transmission between the driving piece and the driven piece; when the transmission force between the driving piece and the driven piece is not larger than the rated force, the breakable connecting piece is in transmission connection between the driving piece and the driven piece when the driving piece moves in the opposite direction of the first direction. According to the scheme, the user can be protected, and the anti-pinch function is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical transmission, in particular to a transmission assembly, a flip screen driving mechanism and a control method thereof. BACKGROUND

[0002] There is an up-lifting door body or an up-lifting screen in the field of electrical appliances. When the up-lifting door body or the up-lifting screen is closed and reset, there is a risk of pinching hands due to its own gravity or the driving of the driving member. In the prior art, a motor is usually used as the driving member, and whether the hands are pinched is determined according to whether the current of the motor reaches the locked-rotor current, wherein the locked-rotor current refers to the current generated when the motor cannot rotate due to too large load or too large resistance during operation. However, in such a driving and transmission mode, the force when the hands are pinched is positively correlated with the rated load of the motor. In order to stabilize the driving of the motor on the door body or the screen, the rated load of the motor cannot be too small, and therefore, the problem of too large pinching force that easily causes injury to the user is caused. SUMMARY

[0003] Therefore, it is necessary to provide a transmission assembly, a flip screen driving mechanism and a control method thereof in view of the problem that the existing driving mechanism is easy to cause pinching injury when driving rotation.

[0004] A transmission assembly, comprising a driving member, a driven member and a breakable connecting member, the driving member is configured to be able to reciprocate in a first direction; the driven member is movably arranged along the first direction relative to the driving member and is configured to be able to follow the driving member to move synchronously in the first direction; the breakable connecting member is breakably connected in transmission between the driving member and the driven member, the breakable connecting member is provided with a rated force, when the transmission force between the driving member and the driven member is greater than the rated force, the breakable connecting member breaks the transmission between the driving member and the driven member; when the transmission force between the driving member and the driven member is not greater than the rated force, the breakable connecting member is connected in transmission between the driving member and the driven member when the driving member moves in the opposite direction of the first direction.

[0005] In one of the embodiments, the driven member is provided with an abutting block protruding thereon, the abutting block is used to abut on the driving member when the driving member moves in the first direction, so as to drive the driven member to move synchronously with the driving member in the first direction.

[0006] In one of the embodiments, the breakable connecting piece is rotatably mounted on one of the driven member and the driving member between a transmission position and a disconnection position, and when the breakable connecting piece is forced in a direction opposite to the first direction and the force is greater than the rated force, the breakable connecting piece rotates from the transmission position to the disconnection position, wherein when the breakable connecting piece is in the transmission position, the breakable connecting piece is in one-way contact with the other one of the driven member and the driving member, so that the breakable connecting piece is in transmission connection between the driving member and the driven member when the driving member moves in the direction opposite to the first direction; and when the breakable connecting piece is in the disconnection position, the breakable connecting piece is not in contact with the other one of the driven member and the driving member, so that there is no transmission relationship between the driving member and the driven member when the driving member moves in the direction opposite to the first direction.

[0007] In one of the embodiments, the breakable connecting piece is rotatably connected to the driven member, and the driving member is provided with a transmission protrusion, and when the breakable connecting piece is in the transmission position, the breakable connecting piece is at least partially located in a movement path of the transmission protrusion in the direction opposite to the first direction, and when the breakable connecting piece is in the disconnection position, the breakable connecting piece is completely separated from the movement path of the transmission protrusion in the direction opposite to the first direction.

[0008] In one of the embodiments, the breakable connecting piece is further rotatable to an initial position, which is a position of the breakable connecting piece when the breakable connecting piece is not forced by the driving member, and when the breakable connecting piece is in the initial position, the breakable connecting piece is located in a movement path of the transmission protrusion in the direction opposite to the first direction or in a movement path of the transmission protrusion in the first direction.

[0009] In one of the embodiments, the breakable connecting piece is further rotatable to a reset position, which is located in a rotation direction opposite to the initial position and the disconnection position, and when the breakable connecting piece is forced in the first direction and the force is greater than the rated force, the breakable connecting piece rotates to the reset position, and the breakable connecting piece is completely separated from the movement path of the transmission protrusion in the first direction.

[0010] In one of the embodiments, the transmission assembly further comprises a housing, the driven member is slidably connected to the housing, and the housing comprises a limiting strip arranged on one side of the housing and located at one end in the direction opposite to the first direction, the limiting strip is arranged on a rotation path of the breakable connecting piece, so that the breakable connecting piece cannot rotate to the disconnection position.

[0011] In one of the embodiments, the breakable connecting piece is provided with a limiting block, the limiting strip and the limiting block are arranged on a rotation plane of the breakable connecting piece, and the limiting block is provided with an abutting plane facing the limiting strip.

[0012] A flip screen driving mechanism includes a transmission component as described in any of the above embodiments, and further includes a driving component and a flip screen. The driving component is tractively connected to the active member to drive the active member to move in a first direction and in the opposite direction of the first direction. The flip screen is connected to the driven member and configured such that the flip screen opens when the driven member moves in the first direction and closes when the driven member moves in the opposite direction of the first direction.

[0013] In one embodiment, the drive assembly includes a drive member, a worm gear, and a transmission gear connected in sequence. The drive member drives the worm gear to rotate, and the worm gear and the transmission gear mesh with each other. The driving member is a rack, and the driving member meshes with the transmission gear.

[0014] In one embodiment, the flip screen drive mechanism further includes a linkage assembly, the two ends of which are respectively connected to the flip screen and the driven member.

[0015] In one embodiment, the flip screen drive mechanism further includes a monitoring component, which includes a position monitoring component and a stall monitoring component. The position monitoring component is used to monitor whether the driven component has reached the corresponding position of the driven component when the flip screen is closed, and the stall monitoring component is used to monitor whether the drive component has reached the rated load.

[0016] A control method for a flip screen driving mechanism is applied to the flip screen driving mechanism described in any of the above embodiments. The control method for the flip screen driving mechanism includes the following steps: controlling the driving component to drive the active component to move along a first direction, and causing the driven component to move synchronously with the active component to drive the flip screen to open; controlling the driving component to drive the active component and the driven component to move in the opposite direction of the first direction to drive the flip screen to close.

[0017] In one embodiment, the step of controlling the drive assembly to move the active member and the driven member in the opposite direction of the first direction to drive the flip screen to close includes the following steps: controlling the drive assembly to move the active member in the opposite direction of the first direction, the flip screen rotates to close; the closing of the flip screen is interfered with, the movement of the driven member stops, the drive assembly drives the active member to move in the opposite direction of the first direction, the disconnectable connector disconnects the transmission between the active member and the driven member, the drive assembly drives the active member to the limit position; controlling the active member and the driven member to slide relative to each other to reset the disconnectable connector and restore the transmission between the active member and the driven member.

[0018] In one embodiment, the step of controlling the drive component to move the active member in the opposite direction of the first direction and rotating the flip screen to close includes the following steps: the gravity of the flip screen itself causes the flip screen to rotate to close, so that the driven member drives the active member to move in the opposite direction of the first direction; and / or, the gravity of the flip screen itself and the drive component together drive the active member and the driven member to move in the opposite direction of the first direction, so as to drive the flip screen to rotate to close.

[0019] In one embodiment, the step of controlling the active member and the driven member to slide relative to each other to reset the breakable connector and restore the transmission between the active member and the driven member includes the following steps: the drive assembly controls the active member to move in the opposite direction of the first direction; or, controls the flip screen to close to drive the driven member to move in the opposite direction of the first direction.

[0020] In the above solution, by setting a disconnectable connector, when the transmission force between the driving and driven components exceeds the rated force, the transmission between the driving and driven components is disconnected. When the transmission component is applied to the flip screen drive mechanism, when the flip screen pinches a hand, causing an increase in the transmission force between the driving and driven components, it can directly disconnect the transmission between the driving and driven components to reduce the force of the flip screen pinching the hand, and avoid the drive component from stalling before stopping operation. This reduces the force of the flip screen pinching the hand from the rated load of the drive component to the rated force of the disconnectable connector, thereby protecting the user and achieving the anti-pinch function. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the flip screen driving mechanism in one embodiment of this application.

[0022] Figure 2 for Figure 1 A schematic diagram of the transmission and drive components when the screen is flipped open.

[0023] Figure 3 for Figure 2 A schematic diagram of the transmission assembly.

[0024] Figure 4 for Figure 2 A schematic diagram of the rotational position of the disconnectable connector.

[0025] Figure 5 for Figure 1 A schematic diagram of the transmission component when the flip screen is closed.

[0026] Figure 6 for Figure 2 A schematic diagram of the transmission assembly and housing.

[0027] Figure 7 for Figure 6A schematic diagram of the back structure of the transmission assembly and housing.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Flip screen drive mechanism; 100. Transmission assembly; 110. Driving component; 111. Transmission protrusion; 120. Driven component; 121. Abutting block; 122. Sliding block; 130. Disconnectable connecting component; 131. Limiting block; 1311. Abutting plane; 140. Housing; 141. Disconnectable transmission section; 142. Stabilizing transmission section; 143. Limiting strip; 144. Slide groove; 150. Torsion spring; 160. Position monitoring component; 200. Drive assembly; 210. Driven component; 220. Worm gear; 230. Transmission gear; 231. Driving wheel; 232. Transmission wheel; 233. Driven wheel; 300. Flip screen; 400. Linkage assembly; A. Disconnected position; B. Transmission position; C. Initial position; D. Reset position; P. Rotation center. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figure 1 , Figure 1 This illustration shows a structural schematic diagram of a flip screen driving mechanism 10 according to an embodiment of this application. The flip screen driving mechanism 10 provided in this embodiment includes a transmission component 100 as described in any of the following embodiments, and further includes a driving component 200 and a flip screen 300. The driving component 200 is used to drive the flip screen 300 to open via the transmission component 100 (e.g., ...). Figure 1 (As shown) or closed. The flip screen 300 is a screen that is rotatably connected to the main body of the cooking device, and it can be any type of display screen in the prior art.

[0037] like Figure 2As shown, in one embodiment, the drive assembly 200 includes a drive member 210, a worm gear 220, and a transmission gear 230 connected in sequence. The drive member 210 drives the worm gear 220 to rotate, and the worm gear 220 and the transmission gear 230 mesh and transmit power. The transmission gear 230 includes a driving wheel 231, a transmission wheel 232, and a driven wheel 233 connected in sequence. The driving wheel 231 is connected to the worm gear 220, and the driving wheel 231 and the transmission wheel 232 are coaxially arranged and rotate at the same angle. The transmission wheel 232 and the driven wheel 233 mesh and transmit power. In this embodiment, the drive member 210 is a uniform speed motor. In the above solution, the worm gear 220 is used for transmission. By utilizing the self-locking characteristic of the worm gear 220, the force exerted by the transmission gear 230 on the drive member 210 in the opposite direction along the first direction is reduced, thereby improving the transmission stability of the drive assembly 200.

[0038] like Figure 1 As shown, in one embodiment, the flip screen drive mechanism 10 further includes a linkage assembly 400. The two ends of the linkage assembly 400 are respectively connected to the flip screen 300 and the driven member 120 of the transmission assembly 100, so as to convert the movement of the transmission assembly 100 along the first direction and the opposite direction of the first direction into the clockwise or counterclockwise rotation of the flip screen 300 through the linkage assembly 400, thereby realizing the opening and closing of the flip screen 300.

[0039] like Figure 2 and Figure 3 As shown, one embodiment of this application provides a transmission assembly 100, which includes a driving member 110, a driven member 120, and a disconnectable connector 130. For example... Figure 1 and Figure 2 As shown, the drive assembly 200 is connected to the drive member 110 to drive the drive member 110 to move in the first direction and in the opposite direction of the first direction. The flip screen 300 is connected to the driven member 120 and is configured such that the flip screen 300 opens when the driven member 120 moves in the first direction and closes when the driven member 120 moves in the opposite direction of the first direction.

[0040] The active component 110 is configured to reciprocate in a first direction, that is, to move along the first direction and in the opposite direction. In this embodiment, the first direction is vertical and downward, and the opposite direction is upward. In other embodiments, the first direction may be horizontal, or it may be another direction inclined to the horizontal. For ease of description, this document uses the example of downward along the first direction and upward along the opposite direction, but this is not intended to be limiting.

[0041] In this embodiment, the driving member 110 in the transmission assembly 100 is a rack and pinion. The driving member 110 meshes with the driven wheel 233 in the transmission gear 230 to transmit the rotational motion of the transmission gear 230 into the movement of the driving member 110 and the driven member 120 along the first direction and in the opposite direction of the first direction, that is, into the up and down movement of the driving member 110 and the driven member 120.

[0042] like Figure 2 and Figure 3 As shown, the follower 120 is configured to move synchronously with the driving member in a first direction and is movably disposed relative to the driving member 110 in the first direction, that is, the follower 120 and the driving member 110 are slidably disposed relative to each other so that the follower 120 can move synchronously with the driving member 110 and can also move relative to the driving member 110.

[0043] like Figure 3 As shown, the driven member 120 is provided with an abutment block 121, which is located on the path of the active member 110 moving along the first direction. The abutment block 121 is used to abut against the active member 110 when the active member 110 moves along the first direction, thereby driving the driven member 120 to move synchronously with the active member 110 in the first direction, thereby driving the flip screen 300 to open. It can also drive the active member 110 to move in the opposite direction of the first direction when the driven member 120 moves in the opposite direction of the first direction.

[0044] like Figure 3 As shown, when the driving member 110 moves in the opposite direction of the first direction, the disconnectable connecting member 130 is disconnectably connected between the driving member 110 and the driven member 120. It can be understood that when the driving member 110 moves in the opposite direction of the first direction, the driving member 110 has the kinetic energy to drive the driven member 120 to move in the opposite direction of the first direction.

[0045] The disconnectable connector 130 has a rated force. The magnitude of the rated force can be determined based on actual conditions, such as the weight of the flip screen 300 itself, so that the rated force is greater than the weight of the flip screen 300 but less than the rated output force of the drive component 210. When the transmission force between the drive component 110 and the driven component 120 is greater than the rated force, the disconnectable connector 130 disconnects the transmission between the drive component 110 and the driven component 120. At this time, there is no transmission relationship between the drive component 110 and the driven component 120, and the drive component 110 and the driven component 120 can slide relative to each other. When the transmission force between the drive component 110 and the driven component 120 is not greater than the rated force, the disconnectable connector 130 is connected between the drive component 110 and the driven component 120 when the drive component 110 moves in the opposite direction of the first direction. At this time, the disconnectable connector 130 can transmit the kinetic energy of the drive component 110 to the driven component 120, so that the driven component 120 moves synchronously with the drive component 110 in the opposite direction of the first direction.

[0046] By setting the disconnectable connector 130, when the transmission force between the driving member 110 and the driven member 120 is greater than the rated force, the transmission between the driving member 110 and the driven member 120 is disconnected. When the transmission assembly 100 is applied to the flip screen drive mechanism 10, when the flip screen pinches a hand, causing the transmission force between the driving member 110 and the driven member 120 to increase, it can directly disconnect the transmission between the driving member 110 and the driven member 120 to reduce the force of the flip screen 300 pinching the hand, and avoid the driving member 210 from stalling before stopping operation. This reduces the force of the flip screen 300 pinching the hand from the rated load of the driving member 210 to the rated force of the disconnectable connector 130, thereby protecting the user and realizing the anti-pinch function.

[0047] like Figure 3 and Figure 4 As shown, in one embodiment, a disconnectable connector 130 is rotatably mounted on one of the driven member 120 and the driving member 110. The disconnectable connector 130 is configured to rotate about a rotation center P between a transmission position B and a disconnection position A, wherein the rotation center P is the axis of a rotation shaft fixed to the surface of one of the driven member 120 and the driving member 110. When the disconnectable connector 130 is subjected to a force greater than the rated force in the opposite direction of the first direction, the disconnectable connector 130 rotates from the transmission position B to the disconnection position A. Figure 4 From the perspective shown, when the disconnectable connector 130 is subjected to a counter-force along the first direction and the counter-force along the first direction is greater than the rated force, the disconnectable connector 130 rotates counterclockwise to rotate from the transmission position B to the disconnect position A.

[0048] like Figure 2 As shown, in this embodiment, the breakable connector 130 is rotatably connected to the driven member 120 via a torsion spring 150, and the torsion spring 150 has a tendency to drive the breakable connector 130 to rotate from the disconnected position A toward the transmission position B. When the reverse force transmitted between the driving member 110 and the driven member 120 in the first direction is greater than the elastic force of the torsion spring 150 for the breakable connector 130 to rotate to the disconnected position A, the breakable connector 130 rotates to the disconnected position A. At this time, the elastic force of the torsion spring 150 that the breakable connector 130 needs to overcome to rotate to the disconnected position A is the rated force of the breakable connector 130, and the rated force can be changed by selecting torsion springs 150 of different specifications.

[0049] Among them, combined Figure 5 As shown, when the disconnectable connector 130 is in the transmission position B, the disconnectable connector 130 abuts against the other one-way component of the driven component 120 and the driving component 110, so that the disconnectable connector 130 is connected between the driving component 110 and the driven component 120 when the driving component 110 moves in the opposite direction of the first direction, thereby realizing that the driving component 110 drives the driven component 120 to move in the opposite direction of the first direction.

[0050] Combination Figure 4 As shown, when the disconnectable connector 130 is in the disconnected position A, the disconnectable connector 130 is not in contact with the other of the driven member 120 and the driving member 110, so that when the driving member 110 moves in the opposite direction of the first direction, there is no transmission relationship between the driving member 110 and the driven member 120, and at this time the driving member 110 and the driven member 120 can slide relative to each other.

[0051] like Figure 3 As shown, in one embodiment, the breakable connector 130 is rotatably connected to the driven member 120, and the driving member 110 has a protruding transmission protrusion 111. The transmission protrusion 111 protrudes in the direction of the breakable connector 130. In this embodiment, the driving member 110 is an integral structure. Figure 4 As shown, when the disconnectable connector 130 is in the transmission position B, it is at least partially located on the opposite movement path of the transmission protrusion 111 along the first direction (e.g., Figure 4 As shown by the dashed line a), when the transmission protrusion 111 moves in the opposite direction of the first direction along with the driving member 110, it can drive the driven member 120 to move synchronously in the opposite direction of the first direction through the disconnectable connector 130. When the disconnectable connector 130 is in the disconnected position A, the disconnectable connector 130 is completely disengaged from the movement path of the transmission protrusion 111 in the opposite direction of the first direction (e.g., as shown by the dashed line a). Figure 4 (as shown by the dashed line a) so that the active member 110 can move relative to the disconnectable connector 130 and the driven member 120 in the opposite direction of the first direction without being interfered with by the disconnectable connector 130.

[0052] Combination Figure 4 and Figure 6 As shown, in one embodiment, the breakable connector 130 can also rotate about the rotation center P to an initial position C. The initial position C is the position where the breakable connector 130 is not subjected to the force of the driving member 110. It can be understood that at this time, the breakable connector 130 is also subjected to the force of the torsion spring 150. When the breakable connector 130 is in the initial position C, the breakable connector 130 is located on the opposite direction of the transmission protrusion 111 or on the movement path of the transmission protrusion 111 along the first direction, such as... Figure 3 As shown, at this time, the disconnectable connector 130 is located on the opposite movement path of the transmission protrusion 111 along the first direction. When the driving member 110 moves in the opposite direction of the first direction, the driving member 110 drives the disconnectable connector 130 to rotate to the transmission position B. Then, the driven member 120 moves synchronously with the driving member 110 in the opposite direction of the first direction.

[0053] Combination Figure 4As shown, in one embodiment, the breakable connector 130 can also rotate around the rotation center P to the reset position D. The reset position D and the disconnect position A are located in opposite rotation directions from the initial position C. When the force on the breakable connector 130 along the first direction is greater than the rated force, the breakable connector 130 rotates to the reset position D, and the breakable connector 130 completely disengages from the movement path of the transmission protrusion 111 along the first direction. When the breakable connector 130 is located on the moving path of the transmission protrusion 111 along the first direction, the driving member 110 continues to move along the first direction to drive the breakable connector 130 to rotate to the reset position D. Then, the transmission protrusion 111 of the driving member 110 continues to move along the first direction beyond the reset position D. At this time, since the force exerted by the transmission protrusion 111 on the breakable connector 130 disappears, the breakable connector 130 resets to the initial position C, so that the breakable connector 130 is partially located on the moving path of the driving member 110 in the opposite direction of the first direction, so that when the driving member 110 moves in the opposite direction of the first direction, it can drive the driven member 120 to move synchronously.

[0054] like Figure 2 and Figure 5 As shown, in one embodiment, the transmission assembly 100 further includes a housing 140, and the driven member 120 is slidably connected to the housing 140. It can be understood that when the driving block drives the driven block to move in the opposite direction of the first direction to close the flip screen 300, when the opening angle of the flip screen 300 is too small, human fingers cannot be inserted into the closed space of the flip screen 300, so there is no risk of pinching fingers, and the disconnectable connector 130 does not need to have a disconnectable function. The housing 140 has a breakable transmission section 141 and a stable transmission section 142 arranged sequentially in the opposite direction to the first direction. When the breakable connector 130 is located in the breakable transmission section 141, its rotation is not restricted by the housing 140. The housing 140 includes a limiting strip 143 disposed on one side of the housing 140 and located in the stable transmission section 142. The limiting strip 143 is disposed on the rotation path of the breakable connector 130. When the breakable connector 130 is located in the stable transmission section 142, the limiting strip 143 interferes with the rotation of the breakable connector 130, preventing the breakable connector 130 from rotating to the disconnected position A.

[0055] The length of the limiting strip 143 in the moving direction of the follower 120 is set according to the opening angle of the corresponding flip screen 300. The limiting strip 143 extends in the opposite direction to the position corresponding to the lock when the opening angle of the flip screen 300 is sufficiently small to avoid pinching fingers. This allows the drive assembly 200 to output a rated load force to completely close the flip screen 300 after reaching its limit position. In this embodiment, the finger diameter is designed to be 5mm-15mm, and it is assumed that there is no pinching risk when the opening angle of the flip screen 300 is less than 14.5°.

[0056] likeFigure 3 and Figure 5 As shown, in one embodiment, the breakable connector 130 is provided with a limiting block 131. Both the limiting strip 143 and the limiting block 131 protrude from the rotation plane of the breakable connector 130, and the limiting block 131 is provided with an abutting plane 1311 facing the limiting strip 143.

[0057] Optionally, in this embodiment, when the breakable connector 130 rotates to the transmission position B, the abutment plane 1311 is parallel to the end face of the limiting strip 143 facing the limiting block 131, and when the breakable connector 130 moves to the stable transmission section 142, the abutment plane 1311 slides relative to the limiting strip 143, so that the breakable connector 130 is held in the transmission position B by the limiting strip 143 and cannot continue to be subjected to the opposite force along the first direction (as in...). Figure 5 From the perspective of the viewpoint, rotating counterclockwise, the transmission between the driving member 110 and the driven member 120 is independent of the position of the disconnectable connecting member 130 and the elastic force of the torsion spring 150. The moving speed of the driving member 110 and the driven member 120 is proportional to the output force of the driving member 210.

[0058] like Figure 6 and Figure 7 As shown, in one embodiment, the flip screen drive mechanism 10 further includes a monitoring component, which includes a position monitoring element 160 and a stall monitoring element, such as... Figure 7 As shown, the position monitoring component 160 is used to monitor whether the driven component 120 has reached the corresponding position of the driven component 120 when the flip screen 300 is closed. The corresponding position of the driven component 120 when the flip screen 300 is closed is as follows: Figure 5 As shown. Figure 6 and Figure 7 As shown, the housing 140 is provided with a slide groove 144, and the follower 120 is provided with a sliding block 122 that is slidably set in the slide groove 144. The monitoring follower 120 is used to monitor whether the sliding block 122 has reached a predetermined position, wherein the predetermined position is the corresponding position of the follower 120 when the flip screen 300 is closed.

[0059] The stall detection device is used to monitor whether the drive component 210 in the drive assembly 200 has reached its rated load. When the drive component 210 reaches its rated load, its excessive current will be detected as stall. It can be understood that the rated load is greater than the drive load required for the drive component 210 to move the actuator 110. The stall detection device is triggered when the actuator 110 moves to its limit position and can no longer move.

[0060] A control method for a flip screen driving mechanism 10, applied to the flip screen driving mechanism 10 in any of the above embodiments, includes the following steps:

[0061] S10: Control drive component 200 drives active component 110 to move along the first direction, and causes driven component 120 to move synchronously with active component 110, so as to drive flip screen 300 to open.

[0062] S20: The control drive component 200 drives the active component 110 and the driven component 120 to move in the opposite direction of the first direction so as to drive the flip screen 300 to close.

[0063] It is understandable that steps S10 and S20 are not related. When it is necessary to open the flip screen 300, the flip screen drive mechanism 10 is controlled through step S10. When it is necessary to close the flip screen 300, the flip screen drive mechanism 10 is controlled through step S20.

[0064] In one embodiment, step S20, which involves controlling the drive assembly 200 to move the active member 110 and the driven member 120 in the opposite direction of the first direction to close the flip screen 300, includes the following steps:

[0065] S21: The control drive component 200 drives the active component 110 to move in the opposite direction of the first direction, and the flip screen 300 rotates to close.

[0066] In one embodiment, step S21 includes the following steps: the screen 300 rotates to close due to its own gravity. At this time, the kinetic energy of the driven member 120 is greater than that of the active member 110, so that the driven member 120 drives the active member 110 to move in the opposite direction of the first direction through the abutment block 121. However, since the active member 110 is connected to the drive component 200, its movement speed is controlled by the drive component 200. The drive component 200 can reduce the closing speed of the screen 300 by reducing the movement speed of the active member 110 in the opposite direction of the first direction, thereby avoiding the closing speed of the screen 300 being too fast.

[0067] In one embodiment, step S21 includes the following steps: when the gravity of the flip screen 300 itself is insufficient to drive the flip screen 300 to rotate to close, the gravity of the flip screen 300 itself and the drive component 200 together drive the active member 110 and the driven member 120 to move in the opposite direction of the first direction, so as to drive the flip screen 300 to rotate to close.

[0068] At this time, the gravity of the flip screen 300 pushes the driven member 120 to move in the opposite direction of the first direction, and the drive component 200 drives the active member 110 to move in the opposite direction of the first direction. Although there is a difference in kinetic energy between the two, both the active member 110 and the driven member 120 have kinetic energy to move in the opposite direction of the first direction. At this time, the transmission force of the disconnectable connector 130 between the active member 110 and the driven member 120 is smaller than when the driven member 120 has no kinetic energy, thereby reducing the rated force of the disconnectable connector 130 and improving the sensitivity of the anti-pinch function.

[0069] It is understandable that as the flip screen 300 closes, its opening angle gradually decreases, and its vertical gravity can drive the tangential force of the flip screen 300 to close gradually decrease to zero. Therefore, during the closing process of the flip screen 300, the following situations exist: 1. The gravity of the flip screen 300 itself is sufficient to drive the flip screen 300 to start closing, but not enough to drive the flip screen 300 to close completely. In the early stage of the closing process of the flip screen 300, the driven member 120 drives the active member 110 to move in the opposite direction of the first direction. The driving component 200 controls its closing speed through the moving speed of the active member 110. In the later stage of the closing process, the kinetic energy of the driven member 120 gradually decreases, and the driving member 210 drives the active member 110 to move in the opposite direction of the first direction, thereby driving the driven member 120 to move, and thus driving the flip screen 300 to continue closing. 2. The gravity of the flip screen 300 itself is insufficient to drive the flip screen 300 to start closing. During the closing process of the flip screen 300, the driving component 210 drives the active component 110 to move in the opposite direction of the first direction, thereby driving the driven component 120 to move, and thus driving the flip screen 300 to close.

[0070] S22: The closing of the flip screen 300 is interfered with, for example, by a hand being pinched. The movement of the driven member 120 connected to the flip screen 300 in the opposite direction of the first direction is suspended. The drive component 200 drives the active member 110 to continue moving in the opposite direction of the first direction. At this time, the transmission force of the active member 110 and the driven member 120 is greater than the rated force of the disconnectable connector 130. The disconnectable connector 130 disconnects the transmission between the active member 110 and the driven member 120. The drive component 200 drives the active member 110 to continue moving in the opposite direction of the first direction to the limit position. At this time, the actual load of the drive component 200 reaches the rated load of the drive component 200, the drive member 210 stalls, and the stall detection device is triggered. However, at this time, because the movement of the driven member 120 in the opposite direction of the first direction is suspended midway, the position detection device 160 does not detect the corresponding position of the driven member 120 when the flip screen 300 is closed. By combining the position monitoring component 160 and the stall detection component, it can be determined that the transmission between the driving component 110 and the driven component 120 has been disconnected.

[0071] Understandably, after the breakable connector 130 rotates to the disconnected position A, the active member 110 continues to move in the opposite direction of the first direction, thus disengaging the breakable connector 130. Afterwards, the breakable connector 130 is no longer subjected to the force of the active member 110 and rotates back to the initial position C. S23: Control the relative sliding of the active member 110 and the driven member 120. Since the breakable connector 130, located at the initial position C, is on the moving path of the transmission protrusion 111 along the first direction, when the active member 110 and the driven member 120 slide relative to each other, the relative movement between the active member 110 and the driven member 120 can drive the breakable connector 130 to rotate to the reset position D. Then, the transmission protrusion 111 of the active member 110 continues to move relative to each other beyond the reset position D. At this point, the force exerted by the transmission protrusion 111 on the breakable connector 130 is eliminated. If the disconnectable connector 130 is lost, it is reset to the initial position C, and the disconnectable connector 130 is partially located on the opposite movement path of the active member 110 along the first direction, so that when the active member 110 moves in the opposite direction of the first direction, it can drive the driven member 120 to move synchronously. At this time, the disconnectable connector 130 is reset and the transmission between the active member 110 and the driven member 120 is restored. Then, step S10 is repeated to control the drive assembly 200 to drive the active member 110 to move in the opposite direction of the first direction, so as to drive the flip screen 300 to rotate and close.

[0072] In one embodiment, step S23 includes the following steps: the drive component 200 controls the active member 110 to move in the opposite direction of the first direction. At this time, since the position of the driven member 120 remains unchanged, the relative movement of the active member 110 and the driven member 120 is realized. The drive assembly 200 drives the active member 110 to move along the first direction. Since the breakable connector 130, located at the initial position C, is on the moving path of the transmission protrusion 111 along the first direction, the active member 110 moves along the first direction and drives the breakable connector 130 to rotate to the reset position D. Then, the transmission protrusion 111 of the active member 110 continues to move along the first direction beyond the reset position D. At this time, since the force exerted by the transmission protrusion 111 on the breakable connector 130 disappears, the breakable connector 130 resets to the initial position C, and the breakable connector 130 is partially located on the moving path of the active member 110 in the opposite direction of the first direction, so that when the active member 110 moves in the opposite direction of the first direction, it can drive the driven member 120 to move synchronously. At this time, the breakable connector 130 resets and the transmission between the active member 110 and the driven member 120 is restored. Then, step S10 is repeated to control the drive assembly 200 to drive the active member 110 to move in the opposite direction of the first direction, so as to drive the flip screen 300 to rotate and close.

[0073] In one embodiment, step S23 includes the following steps: controlling the flip screen 300 to close so as to drive the driven member 120 to move in the opposite direction of the first direction. At this time, since the position of the active member 110 is not fixed, the relative movement of the active member 110 and the driven member 120 is realized. Correspondingly, when the follower 120 moves in the opposite direction of the first direction, since the breakable connector 130 located at the initial position C is on the moving path of the transmission protrusion 111 along the first direction, the movement of the follower 120 in the opposite direction of the first direction can cause the breakable connector 130 to be subjected to force by the driving member 110 and rotate to the reset position D. Then the follower 120 continues to move so that the breakable connector 130 exceeds the position of the transmission protrusion 111. At this time, since the force exerted by the transmission protrusion 111 on the breakable connector 130 disappears, the breakable connector 130 resets to the initial position C, and the breakable connector 130 is again partially located on the moving path of the driving member 110 in the opposite direction of the first direction. At this time, the flip screen 300 reaches the fully closed state.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A transmission assembly characterized by, The transmission assembly comprises: a driving member configured to be reciprocally movable in a first direction; a driven member movably arranged relative to the driving member along the first direction and configured to be synchronously movable with the driving member along the first direction; a breakable connecting member breakably connected between the driving member and the driven member, the breakable connecting member being provided with a rated force, when a transmission force between the driving member and the driven member is greater than the rated force, the breakable connecting member breaks the transmission between the driving member and the driven member, and when the transmission force between the driving member and the driven member is not greater than the rated force, the breakable connecting member is connected between the driving member and the driven member when the driving member moves in a reverse direction of the first direction.

2. The transmission assembly of claim 1, wherein, An abutting block is protruded on the driven member, and the abutting block is used to abut on the driving member when the driving member moves in the first direction, so as to drive the driven member to synchronously move with the driving member along the first direction.

3. The transmission assembly of claim 1, wherein, The breakable connecting member is rotatably arranged between the driven member and the driving member, and when a force in a reverse direction of the first direction of the breakable connecting member is greater than the rated force, the breakable connecting member rotates from a transmission position to a break position, When the breakable connecting member is in the transmission position, the breakable connecting member is one-way abutted with the other one of the driven member and the driving member, so that the breakable connecting member is connected between the driving member and the driven member when the driving member moves in the reverse direction of the first direction. When the breakable connecting member is in the break position, the breakable connecting member is not contacted with the other one of the driven member and the driving member, so that there is no transmission relationship between the driving member and the driven member when the driving member moves in the reverse direction of the first direction.

4. The transmission assembly of claim 3, wherein, The breakable connecting member is rotatably connected to the driven member, and the driving member is provided with a transmission protrusion, when the breakable connecting member is in the transmission position, the breakable connecting member is at least partially located in a moving path of the transmission protrusion in the reverse direction of the first direction, and when the breakable connecting member is in the break position, the breakable connecting member is completely separated from the moving path of the transmission protrusion in the reverse direction of the first direction.

5. The transmission assembly of claim 4, wherein, The breakable connecting member is further rotatable to an initial position, the initial position being a position of the breakable connecting member when the breakable connecting member is not subjected to a force of the driving member, when the breakable connecting member is in the initial position, the breakable connecting member is located in a moving path of the transmission protrusion in the reverse direction of the first direction or in a moving path of the transmission protrusion in the first direction.

6. The transmission assembly of claim 5, wherein, The breakable connecting member is further rotatable to a reset position, the reset position and the break position being located in opposite rotation directions of the initial position, when a force of the breakable connecting member in the first direction is greater than the rated force, the breakable connecting member rotates to the reset position, and the breakable connecting member is completely separated from the moving path of the transmission protrusion in the first direction.

7. The transmission assembly of claim 3, wherein, The transmission assembly further comprises a housing, the driven element is slidingly connected to the housing, and the housing comprises a limiting strip arranged on one side of the housing and at one end in the opposite direction of the first direction, the limiting strip is arranged on the rotating path of the breakable connecting element, so that the breakable connecting element cannot rotate to the disconnected position.

8. The transmission assembly of claim 7, wherein, The breakable connecting element is provided with a limiting block, the limiting strip and the limiting block are arranged on the rotating plane of the breakable connecting element, and the limiting block is provided with an abutting plane facing the limiting strip.

9. A flip screen driving mechanism, characterized by, The transmission assembly comprises a driving assembly and a flip screen, the driving assembly is drivingly connected to the driving element to drive the driving element to move in the first direction and in the opposite direction of the first direction, and the flip screen is connected to the driven element and is configured to open when the driven element moves in the first direction and to close when the driven element moves in the opposite direction of the first direction.

10. The flip screen drive mechanism of claim 9, wherein, The driving assembly comprises a driving element, a worm and a transmission gear connected in sequence, the driving element drives the worm to rotate, and the worm and the transmission gear are in meshing transmission, and the driving element is a rack, and the driving element is in meshing transmission with the transmission gear.

11. The flip screen drive mechanism of claim 9, wherein, The flip screen driving mechanism further comprises a connecting rod assembly, two ends of the connecting rod assembly are connected to the flip screen and the driven element respectively.

12. The flip screen drive mechanism of claim 9, wherein, The flip screen driving mechanism further comprises a monitoring assembly, the monitoring assembly comprises a position monitoring element and a stall monitoring element, the position monitoring element is used to monitor whether the driven element reaches the corresponding position of the driven element when the flip screen is closed, and the stall monitoring element is used to monitor whether the driving assembly reaches the rated load.

13. A control method of a flip screen driving mechanism, characterized by, The control method of the flip screen driving mechanism comprises the following steps: controlling the driving assembly to drive the driving element to move in the first direction and to drive the driven element to move synchronously with the driving element to open the flip screen; controlling the driving assembly to drive the driving element and the driven element to move in the opposite direction of the first direction to close the flip screen.

14. The control method of the flip screen driving mechanism according to claim 13, wherein The step of controlling the driving assembly to drive the driving element and the driven element to move in the opposite direction of the first direction to close the flip screen comprises the following steps: controlling the driving assembly to drive the driving element to move in the opposite direction of the first direction, and the flip screen rotates to close; the closing of the flip screen is interfered, the movement of the driven element is paused, the driving assembly drives the driving element to move in the opposite direction of the first direction, the breakable connecting element disconnects the transmission between the driving element and the driven element, and the driving assembly drives the driving element to the limit position; controlling the driving element and the driven element to slide relative to each other to reset the breakable connecting element and restore the transmission between the driving element and the driven element.

15. The control method of the flip screen driving mechanism according to claim 14, wherein The step of controlling the driving assembly to drive the driving element to move in the opposite direction of the first direction, and the flip screen rotates to close comprises the following steps: the gravity of the flip screen itself drives the flip screen to rotate to close, so that the driven element drives the driving element to move in the opposite direction of the first direction; And / or, the screen itself gravity and drive assembly together to drive the active and passive components in the first direction of the reverse direction of movement, to drive the screen to rotate to close.

16. The control method of the flip screen driving mechanism according to claim 14, wherein The step control active and passive components relative sliding to reset the breakable connector, and restore the transmission between the active and passive components, comprising the following steps: The drive assembly controls the active component to move in the opposite direction of the first direction; Or, control the screen to close to drive the passive component to move in the opposite direction of the first direction.

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