Electric operation mechanism and switch device

Abstract

An electric operation mechanism for a switching device comprises a rack; a motor configured to provide power when energized and capable of rotating in a forward direction and a reverse direction; a transmission assembly mounted to the frame and connected to the motor, and configured to transmit power from the motor; the sliding block is connected to the transmission assembly and can be driven by the transmission assembly to move between a switching-on position and a switching-off position; the electric operation mechanism further comprises a first driving switch, and when the sliding block stops at the opening position, the first driving switch is closed so that the motor can be powered on and rotate in the positive direction; and the second driving switch is configured to be closed to enable the motor to be electrified and rotate in the opposite direction when the sliding block stops at the closing position.

Description

Technical Field

[0001] The utility model relates to an electric operating mechanism and a switch device comprising the electric operating mechanism, and more specifically, to an electric operating mechanism with a wider application range and a switch device comprising the electric operating mechanism. Background Art

[0002] The automatic switching of the circuit breaker between the closed state and the open state can be realized by the electric operating mechanism, and the closing operation or the opening operation of the circuit breaker can be realized by sending a trigger signal (for example, a pulse signal) to the electric operating mechanism. However, in the prior art, it is impossible to independently control the closing operation and the opening operation of the circuit breaker. The trigger signal sent to the electric operating mechanism can only switch the state of the circuit breaker, but cannot more accurately control whether the circuit breaker switches from the closed state to the open state, or from the open state to the closed state. The above problems limit the scope of application of the electric operating mechanism and are not conducive to the integration of the electric operating mechanism with other components.

[0003] Therefore, it is desired to provide an electric operating mechanism to overcome the above-mentioned defects in the prior art. Utility Model Content

[0004] According to the first aspect of the utility model, an electric operating mechanism for a switch device is proposed, comprising: a frame; a motor, configured to provide power when powered on, and capable of rotating in a positive direction and in a reverse direction; a transmission assembly, mounted on the frame and connected to the motor, and configured to transmit power from the motor; a slider, connected to the transmission assembly, capable of being driven by the transmission assembly to move between a closed position and an open position; wherein the electric operating mechanism also comprises: a first drive switch, configured such that when the slider is parked in the open position, the first drive switch is closed so that the motor is powered on and rotates in a positive direction; a second drive switch, configured such that when the slider is parked in the closed position, the second drive switch is closed so that the motor is powered on and rotates in a reverse direction.

[0005] According to this solution, the closing operation and the opening operation of the circuit breaker can be independently controlled by the first drive switch and the second drive switch, so that the electric operating mechanism can be applied to more complex logic control, thereby expanding the application scope of the electric operating mechanism.

[0006] In some embodiments, the electric operating mechanism may further include a position component, which is movably mounted on the frame and can be driven by the slider, the position component is configured to cause the motor to change the direction of rotation, the position component includes a delay elastic member, the position and stroke of the delay elastic member are designed so that, when the slider moves from the opening position to the closing position or from the closing position to the opening position, the position component does not cause the motor to change the direction of rotation, and the delay elastic member has passed its dead point and can cause the motor to change the direction of rotation after a predetermined time delay under the action of its elastic force.

[0007] According to this solution, the time-delay elastic member can ensure that the direction of rotation of the motor is changed after a predetermined time has passed since the motor stopped.

[0008] In some embodiments, the transmission assembly may include a transmission gear rotatable relative to the frame, the position assembly includes a protruding actuating portion, and the electric operating mechanism further includes: a cam, fixed coaxially with the transmission gear and rotating synchronously with the transmission gear, including a cam body and a cam protrusion protruding outward from the cam body; a first micro switch, fixedly arranged near the cam, when the cam rotates until the cam protrusion abuts against the first micro switch, the first micro switch is turned on, and when the cam rotates until the cam protrusion is disengaged from the first micro switch, the first micro switch is turned off; a second micro switch and a third micro switch, fixedly arranged near the position assembly, when the position When the position component moves to the point where the actuating portion abuts against the second microswitch and the third microswitch, the second microswitch and the third microswitch are in a pressed state so that the motor rotates in a positive direction when energized; when the position component moves to the point where the actuating portion disengages from the second microswitch and the third microswitch, the second microswitch and the third microswitch are in a released state so that the motor rotates in a reverse direction when energized; wherein, when the slider is in the opening position, the first microswitch is disconnected, and the second microswitch and the third microswitch are in a pressed state; when the slider is in the closing position, the first microswitch is disconnected, and the second microswitch and the third microswitch are in a released state.

[0009] According to this solution, the first micro switch enables the motor to continue rotating after the trigger signal ends. In addition, the second micro switch and the third micro switch enable the motor to rotate in the expected direction.

[0010] In some embodiments, the electric operating mechanism may also include: a fourth microswitch connected in series with the first drive switch, when the slider is in the open position, the cam protrusion abuts against the fourth microswitch, and the fourth microswitch is turned on, when the slider is in the closed position, the cam protrusion disengages from the fourth microswitch, and the fourth microswitch is turned off; a fifth microswitch connected in series with the second drive switch, when the slider is in the closed position, the cam protrusion abuts against the fifth microswitch, and the fifth microswitch is turned on, when the slider is in the open position, the cam protrusion disengages from the fifth microswitch, and the fifth microswitch is turned off.

[0011] According to this solution, the fourth micro switch controls the closing operation of the circuit breaker together with the first drive switch, and the fifth micro switch controls the opening operation of the circuit breaker together with the second drive switch.

[0012] In some schemes, when the slider is in the open position, the motor is energized by closing the first drive switch for at least the closing trigger time, and the motor rotates in the positive direction to turn on the first microswitch, so that after the closing trigger time, the motor can continue to rotate in the positive direction until the slider reaches the closing position, and the slider drives the position component to move. When the slider reaches the closing position, the first microswitch is disconnected, and the second and third microswitch are switched to the released state; when the slider is in the closed position, the motor is energized by closing the second drive switch for at least the opening trigger time, and the motor rotates in the reverse direction to turn on the first microswitch, so that after the opening trigger time, the motor can continue to rotate in the reverse direction until the slider reaches the opening position, and the slider drives the position component to move. When the slider reaches the opening position, the first microswitch is disconnected, and the second and third microswitch are switched to the pressed state.

[0013] In some schemes, the branch formed by the first drive switch and the fourth microswitch is connected in parallel with the first microswitch. When the slider is in the open position, the first drive switch is closed for the closing trigger time by a pulse signal. During the closing trigger time, the motor is energized and rotates in the positive direction to turn on the first microswitch, so that after the closing trigger time, the motor can continue to rotate in the positive direction; the branch formed by the second drive switch and the fifth microswitch is connected in parallel with the first microswitch. When the slider is in the closed position, the second drive switch is closed for the opening trigger time by a pulse signal. During the opening trigger time, the motor is energized and rotates in the reverse direction to turn on the first microswitch, so that after the opening trigger time, the motor can continue to rotate in the reverse direction.

[0014] According to this solution, by connecting the branch formed by the first drive switch and the fourth microswitch in parallel with the first microswitch, even if the closing trigger signal has ended and the first drive switch has returned to the disconnected state, the motor can be powered by the branch turned on by the first microswitch and continue to rotate. Similarly, by connecting the branch formed by the second drive switch and the fifth microswitch in parallel with the first microswitch, even if the opening trigger signal has ended and the second drive switch has returned to the disconnected state, the motor can be powered by the branch turned on by the first microswitch and continue to rotate.

[0015] In some schemes, the branch formed by the first drive switch and the fourth microswitch is connected in parallel with the first microswitch. When the slider is in the open position, the first drive switch is closed, the motor is energized and rotated in the positive direction to turn on the first microswitch, and the slider drives the position component to move. When the slider reaches the closed position, the first drive switch remains closed, and the first and fourth microswitch are disconnected; the branch formed by the second drive switch and the fifth microswitch is connected in parallel with the first microswitch. When the slider is in the closed position, the second drive switch is closed, the motor is energized and rotated in the reverse direction to turn on the first microswitch, and the slider drives the position component to move. When the slider reaches the open position, the second drive switch remains closed, and the first and fifth microswitch are disconnected.

[0016] According to the solution, when the circuit breaker has switched from the open state to the closed state, the fourth micro switch for controlling the closing operation is disconnected to avoid affecting the subsequent opening operation. Similarly, when the circuit breaker has switched from the closed state to the open state, the fifth micro switch for controlling the opening operation is disconnected to avoid affecting the subsequent closing operation.

[0017] In some embodiments, the first drive switch and the second drive switch are configured such that closing or opening of the first drive switch correspondingly causes opening or closing of the second drive switch, and closing or opening of the second drive switch correspondingly causes opening or closing of the first drive switch.

[0018] According to this solution, the first drive switch and the second drive switch cannot be in the closed or open state at the same time, which is more conducive to independently controlling the closing or opening operation of the circuit breaker.

[0019] In some embodiments, in the circumferential direction of the transmission gear, the first micro switch may be arranged between the fourth micro switch and the fifth micro switch.

[0020] According to this scheme, during the closing operation, the cam passes through the fourth microswitch, the first microswitch and the fifth microswitch in sequence to turn on the fourth microswitch, the first microswitch and the fifth microswitch in sequence. Similarly, during the opening operation, the cam passes through the fifth microswitch, the first microswitch and the fourth microswitch in sequence to turn on the fifth microswitch, the first microswitch and the fourth microswitch in sequence.

[0021] In some embodiments, the slider may include a slider protrusion protruding from the slider body, and the position assembly includes: a first position member, which is slidably mounted to the frame, including: a first body, which is formed in a plate shape; a first groove that runs through the first body and cooperates with the slider protrusion so that the first position member can be driven by the slider protrusion; a first actuating portion that protrudes upward from the first body, and a second position member, which is rotatably mounted to the frame and is located above the first position member, includes: a second body, which is formed in a disc shape; a first follower portion and a second follower portion that protrude outward from the second body and are spaced apart from each other, and the first follower portion and the second follower portion are configured to be able to be driven by the first actuating portion in opposite directions respectively. Driven, so that the second positioning member rotates in opposite directions respectively; the second positive actuating part and the second counter actuating part protrude upward from the second body and are spaced apart from each other, the third positioning member is rotatably mounted to the frame, and is located above the second positioning member, including: a third body, formed in a disc shape; a third follower part, which protrudes downward from the third body and is arranged between the second positive actuating part and the second counter actuating part, so that the second positioning member rotates in opposite directions and can drive the third positioning member to rotate in opposite directions through the cooperation of the second positive actuating part and the second counter actuating part with the third follower part; an actuating part, configured to press and disengage the second micro switch and the third micro switch.

[0022] In some aspects, the cam may include a first drive surface transitioning from the cam body to the cam protrusion and a second drive surface transitioning from the cam protrusion back to the cam body, the first drive surface and the second drive surface being planar.

[0023] According to a second aspect of the utility model, a switch device is provided, comprising the electric operating mechanism according to the first aspect of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of the electric operating mechanism according to the utility model.

[0025] Figure 2 It is an exploded view of the electric operating mechanism according to the utility model.

[0026] Figure 3 It is a perspective view of the first position member of the electric operating mechanism according to the utility model.

[0027] Figure 4 It is a perspective view of the second position member of the electric operating mechanism according to the utility model viewed from above.

[0028] Figure 5 It is a perspective view of the third position member of the electric operating mechanism according to the utility model viewed from below.

[0029] Figure 6It is a top view of the electric operating mechanism according to the utility model. At this time, the slider is in the opening position, the fourth micro switch is turned on, and the first micro switch is turned off.

[0030] Figure 7 It is a top view of the electric operating mechanism according to the utility model. At this time, when the slider is in the opening position, the motor is energized for the closing trigger time, the fourth micro switch is turned on, and the first micro switch is turned on.

[0031] Figure 8 It is a top view of the electric operating mechanism according to the utility model. At this time, when the slider is in the opening position, the motor is energized for a continuous closing trigger time, and then the fourth micro switch is disconnected and the first micro switch is connected.

[0032] Fig. 9 It is a top view of the electric operating mechanism according to the utility model. At this time, the fourth micro switch is disconnected, the first micro switch is disconnected, and the second micro switch and the third micro switch are still in a pressed state.

[0033] Fig.10 It is a top view of the electric operating mechanism according to the utility model. At this time, the fourth micro switch is disconnected, the first micro switch is disconnected, and the second micro switch and the third micro switch are converted to the released state.

[0034] Fig.11 It is a top view of the electric operating mechanism according to the utility model. At this time, the slider is in the closing position, the fifth micro switch is turned on, and the first micro switch is turned off.

[0035] Fig.12 It is a top view of the electric operating mechanism according to the utility model. At this time, when the slider is in the closing position, the motor is energized for the opening trigger time, the fifth micro switch is turned on, and the first micro switch is turned on.

[0036] Fig.13 It is a top view of the electric operating mechanism according to the utility model. At this time, when the slider is in the closing position, the motor is energized for a continuous opening trigger time, and then the fifth micro switch is disconnected and the first micro switch is connected.

[0037] Fig.14 It is a top view of the electric operating mechanism according to the utility model. At this time, the fifth micro switch is disconnected, the first micro switch is disconnected, and the second micro switch and the third micro switch are still in a released state.

[0038] Fig.15 It is a top view of the electric operating mechanism according to the utility model. At this time, the fifth micro switch is disconnected, the first micro switch is disconnected, and the second micro switch and the third micro switch are converted to the pressed state.

[0039] Fig.16It is a circuit diagram showing the principle of process one of the electric operating mechanism according to the utility model, wherein (a) the first drive switch is closed; (b) the first microswitch is turned on; (c) the fourth microswitch is turned off, (d) the first microswitch is turned off; (e) the second microswitch and the third microswitch are converted to the released state.

[0040] Fig.17 It is a circuit diagram showing the principle of process 2 of the electric operating mechanism according to the utility model, in which (a) the second drive switch is closed; (b) the first microswitch is turned on; (c) the fifth microswitch is turned off, (d) the first microswitch is turned off; (e) the second microswitch and the third microswitch are converted to the pressed state.

[0041] Reference numerals list

[0042] 1 motor, 2 transmission assembly, 21 transmission gear, 3 slider, 31 slider protrusion, 32 slider groove, 4 cam, 41 cam body, 42 cam protrusion, 43 first driving surface, 44 second driving surface, 5 position assembly, 51 first position member, 511 first body, 512 first groove, 513 first actuating portion, 52 second position member, 521 second body, 522 first driven portion, 523 second driven portion, 524 second positive actuating portion, 525 second negative actuating portion, 526 second groove, 527 limiting portion, 528 abutting portion, 53 third position member, 531 third body, 532 third driven portion, 533 actuating portion, 6 first elastic member, 7 time-delay elastic member, K1 first micro switch, K2, K3 second micro switch and third micro switch, K4 fourth micro switch, K5 fifth micro switch, S1 first driving switch, S2 second driving switch DETAILED DESCRIPTION

[0043] In order to make the purpose, scheme and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. Unless otherwise specified, the terms used in this article have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0044] The electric operating mechanism according to the utility model is used for a switch device, so that the handle of the switch device can be electrically controlled. The switch device is, for example, one of the following: a molded case circuit breaker, a load switch, a fusion switch of a load switch mechanism type, or a fusion switch of a circuit breaker mechanism type.

[0045] Figure 1 and Figure 2They are respectively a top view and an exploded view of the electric operating mechanism according to the utility model, and the electric operating mechanism mainly includes a frame, a motor 1, a transmission assembly 2, a slider 3 and a cam 4. The motor 1 is configured to provide power when powered on. The transmission assembly 2 is connected to the motor 1 and is configured to transmit power from the motor 1. The transmission assembly 2 includes a transmission gear 21 rotatable relative to the frame. The slider 3 is connected to the transmission assembly 2 and can be driven by the transmission assembly 2 to slide between the closing position and the opening position. The slider 3 includes a slider protrusion 31 protruding from the main body of the slider 3. The cam 4 is coaxially fixed with the transmission gear 21 and rotates synchronously with the transmission gear 21. The cam 4 includes a cam body 41 and a cam protrusion 42 protruding outward from the cam body 41.

[0046] According to the utility model, the electric operating mechanism also includes a first drive switch S1 and a second drive switch S2. When the slider 3 is parked in the open position, the first drive switch S1 is closed to enable the motor 1 to be energized and rotate in the forward direction; when the slider 3 is parked in the closed position, the second drive switch S2 is closed to enable the motor 1 to be energized and rotate in the reverse direction.

[0047] The electric operating mechanism according to the utility model further includes a first micro switch K1 for controlling the rotation and stopping of the motor 1, and the first micro switch K1 is fixedly arranged near the cam 4. When the cam 4 rotates until the cam protrusion 42 abuts against the first micro switch K1, the first micro switch K1 is turned on; when the cam 4 rotates until the cam protrusion 42 is separated from the first micro switch K1, the first micro switch K1 is turned off.

[0048] The electric operating mechanism according to the utility model further includes a second micro switch and a third micro switch K2, K3 for controlling the rotation direction of the motor 1. The second micro switch and the third micro switch K2, K3 can be switched between a released state and a pressed state under the action of the position component 5. In the pressed state (such as Fig.16 and 17 As shown, when 11-14 and 21-22 are turned on, that is, the left side of motor 1 is connected to the positive pole of the power supply, and the right side of motor 1 is connected to the negative pole of the power supply), motor 1 rotates in the positive direction (so that Figure 1 The transmission gear 21 in the release state rotates clockwise); Fig.16 and 17 As shown, when 11-12 and 21-24 are turned on, that is, the left side of the motor 1 is connected to the negative pole of the power supply, and the right side of the motor 1 is connected to the positive pole of the power supply), the motor 1 rotates in the reverse direction (so that Figure 1 The transmission gear 21 in the middle rotates counterclockwise).

[0049] The electric operating mechanism according to the utility model further includes a fourth micro switch K4 for controlling the closing operation, and the fourth micro switch K4 is fixedly arranged near the cam 4. When the cam 4 rotates until the cam protrusion 42 abuts against the fourth micro switch K4, the fourth micro switch K4 is turned on; when the cam 4 rotates until the cam protrusion 42 is separated from the fourth micro switch K4, the fourth micro switch K1 is turned off.

[0050] The electric operating mechanism according to the utility model further includes a fifth micro switch K5 for controlling the opening operation, and the fifth micro switch K5 is fixedly arranged near the cam 4. When the cam 4 rotates until the cam protrusion 42 abuts against the fifth micro switch K5, the fifth micro switch K4 is turned on; when the cam 4 rotates until the cam protrusion 42 is separated from the fifth micro switch K5, the fifth micro switch K5 is turned off.

[0051] The fourth micro switch K4 is connected in series with the first drive switch S1 to form a closing branch for opening the closing operation, and the fifth micro switch K5 is connected in series with the second drive switch S2 to form an opening branch for opening the opening operation. The first micro switch K1 forms a maintenance branch for maintaining the rotation of the motor 1. The closing branch, the opening branch, and the maintenance branch are connected in parallel to form a supply circuit between a power supply (e.g., a 24V DC power supply) and the motor 1. When the supply circuit is disconnected, the motor 1 does not receive power and does not rotate; when the supply circuit is turned on, the motor 1 receives power and rotates.

[0052] In the circumferential direction of the transmission gear 21, the first micro switch K1 may be arranged between the fourth micro switch K4 and the fifth micro switch K5. During the closing operation (the transmission gear 21 rotates clockwise), the cam 4 passes through the fourth micro switch K4, the first micro switch K1, and the fifth micro switch K5 in sequence to turn on the fourth micro switch K4, the first micro switch K1, and the fifth micro switch K5 in sequence. Similarly, during the opening operation (the transmission gear 21 rotates counterclockwise), the cam 4 passes through the fifth micro switch K5, the first micro switch K1, and the fourth micro switch K4 in sequence to turn on the fifth micro switch K5, the first micro switch K1, and the fourth micro switch K4 in sequence.

[0053] Reference below Figure 6-17 The principle of the electric operating mechanism according to the utility model is described in detail.

[0054] First reference Figure 6-10 and Fig.16 Describe the principle of closing operation, such as Figure 6 and 16As shown in (a), when the slider 3 is in the open position, the fourth microswitch K4 is turned on by the cam 4, the first microswitch K1 is turned off, and the second microswitch and the third microswitch K2, K3 are in a pressed state to make the motor 1 rotate in the positive direction when powered on. The first drive switch S1 is closed to start the closing operation, and the closing branch formed by the first drive switch S1 and the fourth microswitch K4 is turned on, so that the motor 1 is powered on and rotates in the positive direction, thereby driving the transmission gear 21 and the cam 4 to rotate clockwise. When the cam 4 rotates to contact the first microswitch K1, the first microswitch K1 is turned on (as shown in FIG. 1 ). Figure 7 and 16 (b)). When the cam 4 continues to rotate until it disengages from the fourth micro switch K4, although the fourth micro switch K4 is disconnected to disconnect the closing branch, the motor 1 can still receive power from the power supply under the supply of the maintaining branch formed by the first micro switch K1 to continue rotating in the positive direction (as shown in FIG. Figure 8 and 16 (c)). The transmission gear 21 continues to rotate to move the slider 3 to the closing position to complete the closing operation, and the cam 4 disengages from the first micro switch K1 to disconnect the first micro switch K1. At this time, the fourth micro switch K4 and the first micro switch K1 are both disconnected, so that the supply circuit is disconnected, and the motor 1 no longer receives power from the power supply and stops rotating (as shown in FIG. Fig. 9 and 16 (d)). Then, the second micro switch and the third micro switch K2, K3 are switched from the pressed state to the released state under the action of the position component 5 (as shown in FIG. Fig.10 and 16 (e) to prepare for the subsequent opening operation.

[0055] Then refer to Figure 11-15 and Fig.17 Describe the principle of the opening operation, such as Fig.11 and 17 As shown in (a), when the slider 3 is in the closed position, the fifth microswitch K5 is turned on by the cam 4, the first microswitch K1 is turned off, and the second microswitch and the third microswitch K2, K3 are in a released state to make the motor 1 rotate in the reverse direction when powered on. The second drive switch S2 is closed to start the opening operation, and the opening branch formed by the second drive switch S2 and the fifth microswitch K5 is turned on, so that the motor 1 is powered on and rotates in the reverse direction, thereby driving the transmission gear 21 and the cam 4 to rotate counterclockwise. When the cam 4 rotates to contact the first microswitch K1, the first microswitch K1 is turned on (as shown in FIG. 1 ). Fig.12 and 17(b)). When the cam 4 continues to rotate until it disengages from the fifth microswitch K5, although the fifth microswitch K5 is disconnected to disconnect the opening branch, the motor 1 can still receive power from the power supply under the supply of the maintenance branch formed by the first microswitch K1 to continue rotating in the reverse direction (as shown in FIG. Fig.13 and 17 (c)). The transmission gear 21 continues to rotate to move the slider 3 to the opening position to complete the opening operation, and the cam 4 disengages from the first micro switch K1 to disconnect the first micro switch K1. At this time, the fifth micro switch K5 and the first micro switch K1 are both disconnected, so that the supply circuit is disconnected, and the motor 1 no longer receives power from the power supply and stops rotating (as shown in FIG. Fig.14 and 17 (d)). Then, the second micro switch and the third micro switch K2, K3 are switched from the release state to the pressed state under the action of the position component 5 (as shown in FIG. Fig.15 and 17 (e) to prepare for the subsequent closing operation.

[0056] It should be noted that, taking the closing operation as an example (the opening operation principle is similar and will not be described again for the sake of brevity), the way to close the first drive switch S1 can be either pulse signal triggering or manual closing. For pulse signal triggering, during the duration of the pulse signal, the first drive switch S1 is closed to make the closing branch conductive, so that the motor 1 receives power from the power supply and rotates in the positive direction. After the duration of the pulse signal, although the first drive switch S1 is disconnected to disconnect the closing branch, the first micro switch K1 is already closed at this time, so that the motor 1 can receive power from the power supply via the maintenance branch formed by the first micro switch K1 and continue to rotate.

[0057] For manual closing, the first drive switch S1 remains closed during the entire closing operation. When the slider 3 moves to the closing position, the cam 4 has disengaged from the fourth microswitch K4, causing the fourth microswitch K4 to be disconnected so that the closing branch is disconnected, so that the subsequent opening operation will not be disturbed by the closing branch.

[0058] Preferably, the first drive switch S1 is linked with the second drive switch S2, so that the closing or opening of the first drive switch S1 correspondingly causes the opening or closing of the second drive switch S2, and the closing or opening of the second drive switch S2 correspondingly causes the opening or closing of the first drive switch S1. In other words, the first drive switch S1 for closing operation and the second drive switch S2 for opening operation must be in opposite states to better achieve independent control of closing operation and opening operation.

[0059] Preferably, the cam 4 may include a first driving surface 43 transitioning from the cam body 41 to the cam protrusion 42 and a second driving surface 44 transitioning from the cam protrusion 42 back to the cam body 41. Figure 1 In the embodiment shown, the first drive surface 43 and the second drive surface 44 are planes. The cam body 41 can be formed to be smaller, for example, in the form of a sleeve. The cam protrusion 42 can be formed as a part of a circular ring continuous between the first drive surface 43 and the second drive surface 44.

[0060] Preferably, the position assembly 5 is movably mounted to the frame, can be driven by the slider 3, and is configured to cause the motor to change its rotation direction. The position assembly 5, for example, includes a protruding actuating portion 533. When the position assembly 5 moves to the point where the actuating portion 533 abuts against the second microswitch and the third microswitch K2, K3, the second microswitch and the third microswitch K2, K3 are in a pressed state to rotate the motor 1 in the positive direction when powered on, and when the position assembly 5 moves to the point where the actuating portion 533 is disengaged from the second microswitch and the third microswitch K2, K3, the second microswitch and the third microswitch K2, K3 are in a released state to rotate the motor 1 in the reverse direction when powered on.

[0061] Specifically, as an example, the position assembly 5 of the electric operating mechanism according to the present invention may include a first position member 51, a second position member 52, a third position member 53, a first elastic member 6 and a time-delay elastic member 7. It should be noted that the position assembly may be designed in a manner different from this example as long as the corresponding function can be achieved.

[0062] The first positioning member 51 is slidably mounted to the frame, such as Figure 3 As shown, the first positioning member 51 may include a first body 511, which is formed in a plate shape. The first positioning member 51 may also include a first groove 512 that runs through the first body 511, which cooperates with the slider protrusion 31, so that the first positioning member 51 can be driven by the slider protrusion 31. Specifically, the first groove 512 is, for example, a linear groove, and the slider protrusion 31 protrudes through the first groove 512 and moves linearly along the first groove 512 when the slider 3 moves. When the slider protrusion 31 moves in the first direction to abut against one end of the first groove 512 and continues to move, it can drive the first positioning member 51 to move in the first direction. When the slider protrusion 31 moves in a second direction opposite to the first direction to abut against the other end of the first groove 512 and continues to move, it can drive the first positioning member 51 to move in the second direction. The first positioning member 51 may also include a first actuating portion 513 that protrudes upward from the first body 511.

[0063] The second positioning member 52 is rotatably mounted to the frame and is located above the first positioning member 51. Figure 4As shown, the second position member 52 may include a second body 521, which is formed into a disc shape. The second position member 52 may also include a first driven portion 522 and a second driven portion 523 protruding outward from the second body 521 and spaced apart from each other, and the first driven portion 522 and the second driven portion 523 are configured to be driven by the first actuating portion 513 of the first position member 51 in opposite directions, respectively, so that the second position member 52 rotates in opposite directions respectively. The second position member 52 may also include a second positive actuating portion 524 and a second negative actuating portion 525, which protrude upward from the second body 521 and are spaced apart from each other. The second position member 52 may also include a second groove 526 formed on the second body 521 and extending radially, two limiting portions 527 arranged on both sides of the second groove 526 and extending parallel to the second groove 526, and abutting portion 528 connecting one end of the two limiting portions 527 and close to the rotation axis of the second position member 52. Optionally, in order to make the second groove 526 long enough, the second positioning member 52 may further include a second protrusion protruding outward from the second body 521 , and the second groove 526 is arranged to extend from the second body 521 to the second protrusion in the radial direction.

[0064] The third positioning member 53 is rotatably mounted to the frame and is located above the second positioning member 52. Figure 5 As shown, the third position member 53 may include a third body 531, which is formed into a disc shape. The third position member 53 may also include a third follower 532, which protrudes downward from the third body 531 and is arranged between the second positive actuation portion 524 and the second counter-actuation portion 525 of the second position member 52, so that the second position member 52 rotates in opposite directions and can drive the third position member 53 to rotate in opposite directions through the cooperation of the second positive actuation portion 524 and the second counter-actuation portion 525 with the third follower 532. However, the third follower 532 is not directly sandwiched between the second positive actuation portion 524 and the second counter-actuation portion 525, but when the third follower 532 contacts one of the second positive actuation portion 524 and the second counter-actuation portion 525, it maintains a certain distance from the other of the second positive actuation portion 524 and the second counter-actuation portion 525. The third position member 53 may also include an actuating portion 533, which is configured to press and disengage the second micro switch and the third micro switch K2, K3. The actuating portion 533 of the positioning assembly 5 mentioned above is the actuating portion 533 of the third positioning member 53 .

[0065] Preferably, the position and stroke of the time-delay elastic member 7 are designed so that, when the first microswitch K1 is switched from on to off, the second position member 52 has not yet reached the position for switching the second microswitch and the third microswitch K2, K3, and the time-delay elastic member 7 has passed its dead point and can apply elastic force to the second position member 52 to make it continue to rotate to the position for switching the second microswitch and the third microswitch K2, K3. In other words, the time-delay elastic member 7 can ensure that the motor 1 is delayed for a predetermined time after stopping before reversing. That is, when the slider 3 moves from the opening position to the closing position or from the closing position to the opening position, the position assembly 5 does not cause the motor 1 to reverse, and the time-delay elastic member has passed its dead point and can cause the motor to reverse after a predetermined time delay at this moment under the action of its elastic force. Specifically, when the slider 3 moves from the open position to the closed position, the motor 1 rotates in the positive direction. When the slider 3 reaches the closed position, the position component 5 does not cause the motor 1 to switch to the state of rotating in the reverse direction when powered on, and the delay elastic member 7 has passed its dead point and can, under the action of its elastic force, delay for a predetermined time at this moment to cause the motor 1 to switch to the state of rotating in the reverse direction when powered on; when the slider 3 moves from the closed position to the open position, the motor 1 rotates in the reverse direction. When the slider 3 reaches the open position, the position component 5 does not cause the motor 1 to switch to the state of rotating in the positive direction when powered on, and the delay elastic member 7 has passed its dead point and can, under the action of its elastic force, delay for a predetermined time at this moment to cause the motor 1 to switch to the state of rotating in the positive direction when powered on.

[0066] This document describes in detail several exemplary embodiments of the present invention with reference to preferred embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations may be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention may be combined without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. An electric operating mechanism, characterized in that: include: frame; a motor configured to provide power when powered and capable of rotating in a forward direction and in a reverse direction; a transmission assembly mounted to the frame and connected to the motor and configured to transmit power from the motor; A slider, connected to the transmission assembly, capable of being driven by the transmission assembly to move between a closing position and an opening position; Wherein, the electric operating mechanism also includes: a first drive switch, configured such that when the slider is parked at the open position, the first drive switch is closed to enable the motor to be powered on and rotate in the positive direction; The second drive switch is configured such that when the slider is parked at the closing position, the second drive switch is closed to enable the motor to be energized and rotate in the reverse direction.

2. The electric operating mechanism according to claim 1, characterized in that: The electric operating mechanism further includes a position assembly, which is movably mounted to the frame and can be driven by the slider, and is configured to cause the motor to change the direction of rotation. The position assembly includes a delay elastic member, and the position and stroke of the delay elastic member are designed so that, when the slider moves from the opening position to the closing position or from the closing position to the opening position, the position assembly does not cause the motor to change the direction of rotation, and the delay elastic member has passed its dead point and can, under the action of its elastic force, cause the motor to change its direction of rotation after a delay of a predetermined time at that moment.

3. The electric operating mechanism according to claim 2, characterized in that: The transmission assembly includes a transmission gear rotatable relative to the frame, the position assembly includes a protruding actuating portion, and the electric operating mechanism further includes: a cam, fixed coaxially with the transmission gear and rotating synchronously with the transmission gear, comprising a cam body and a cam protrusion protruding outward from the cam body; a first micro switch, fixedly arranged near the cam, wherein when the cam rotates until the cam protrusion abuts against the first micro switch, the first micro switch is turned on, and when the cam rotates until the cam protrusion is separated from the first micro switch, the first micro switch is turned off; The second micro switch and the third micro switch are fixedly arranged near the position component. When the position component moves to the point where the actuating portion abuts against the second micro switch and the third micro switch, the second micro switch and the third micro switch are in a pressed state so that the motor rotates in the positive direction when energized. When the position component moves to the point where the actuating portion is disengaged from the second micro switch and the third micro switch, the second micro switch and the third micro switch are in a released state so that the motor rotates in the reverse direction when energized. Wherein, when the slider is in the opening position, the first microswitch is disconnected, and the second microswitch and the third microswitch are in the pressed state; when the slider is in the closing position, the first microswitch is disconnected, and the second microswitch and the third microswitch are in the released state.

4. The electric operating mechanism according to claim 3, characterized in that: Also includes: a fourth micro switch connected in series with the first drive switch, wherein when the slider is in the opening position, the cam protrusion abuts against the fourth micro switch, and the fourth micro switch is turned on; and when the slider is in the closing position, the cam protrusion disengages from the fourth micro switch, and the fourth micro switch is turned off; The fifth micro switch is connected in series with the second drive switch. When the slider is in the closing position, the cam protrusion abuts against the fifth micro switch, and the fifth micro switch is turned on. When the slider is in the opening position, the cam protrusion disengages from the fifth micro switch, and the fifth micro switch is turned off.

5. The electric operating mechanism according to claim 4, characterized in that: When the slider is in the open position, the motor is powered on for at least the closing trigger time by closing the first drive switch, and the motor rotates in the positive direction until the first micro switch is turned on, so that after the closing trigger time, the motor can continue to rotate in the positive direction until the slider reaches the closing position, and the slider drives the position component to move. When the slider reaches the closing position, the first micro switch is turned off, and the second micro switch and the third micro switch are converted to the released state; When the slider is in the closing position, the second drive switch is closed to energize the motor for at least the opening trigger time, and the motor rotates in the reverse direction to turn on the first microswitch, so that after the opening trigger time, the motor can continue to rotate in the reverse direction until the slider reaches the opening position, and at the same time, the slider drives the position component to move. When the slider reaches the opening position, the first microswitch is disconnected, and the second microswitch and the third microswitch are converted to the pressed state.

6. The electric operating mechanism according to claim 5, characterized in that: The branch formed by the first drive switch and the fourth micro switch is connected in parallel with the first micro switch. When the slider is in the open position, the first drive switch is closed for the closing trigger time through a pulse signal. During the closing trigger time, the motor is powered on and rotates in the positive direction to turn on the first micro switch, so that the motor can continue to rotate in the positive direction after the closing trigger time. The branch formed by the second drive switch and the fifth microswitch is connected in parallel with the first microswitch. When the slider is in the closing position, the second drive switch is closed for the opening trigger time through a pulse signal. During the opening trigger time, the motor is energized and rotates in the reverse direction to turn on the first microswitch, so that the motor can continue to rotate in the reverse direction after the opening trigger time.

7. The electric operating mechanism according to claim 5, characterized in that: The branch formed by the first drive switch and the fourth micro switch is connected in parallel with the first micro switch. When the slider is in the open position, the first drive switch is closed, so that the motor is powered on and rotates in the positive direction to turn on the first micro switch. At the same time, the slider drives the position component to move. When the slider reaches the closed position, the first drive switch remains closed, and the first micro switch and the fourth micro switch are disconnected. The branch formed by the second drive switch and the fifth microswitch is connected in parallel with the first microswitch. When the slider is in the closing position, the second drive switch is closed, so that the motor is energized and rotates in the reverse direction to turn on the first microswitch. At the same time, the slider drives the position component to move. When the slider reaches the opening position, the second drive switch remains closed, and the first microswitch and the fifth microswitch are disconnected.

8. The electric operating mechanism according to claim 7, characterized in that: The first drive switch and the second drive switch are configured such that closing or opening of the first drive switch correspondingly causes opening or closing of the second drive switch, and closing or opening of the second drive switch correspondingly causes opening or closing of the first drive switch.

9. The electric operating mechanism according to claim 6 or 7, characterized in that: In the circumferential direction of the transmission gear, the first micro switch is arranged between the fourth micro switch and the fifth micro switch.

10. The electric operating mechanism according to claim 3, characterized in that: The slider includes a slider protrusion protruding from a slider body, The location component includes: The first positioning member is slidably mounted to the frame, comprising: a first body formed in a plate shape; a first groove penetrating the first body, cooperating with the slider protrusion, so that the first positioning member can be driven by the slider protrusion; a first actuating portion protruding upward from the first body, The second positioning member is rotatably mounted to the frame and is located above the first positioning member, comprising: a second body formed in a disc shape; a first driven portion and a second driven portion protruding outward from the second body and spaced apart from each other, the first driven portion and the second driven portion being configured to be driven by the first actuating portion in opposite directions, respectively, so that the second positioning member rotates in opposite directions, respectively; a second positive actuating portion and a second counter actuating portion protruding upward from the second body and spaced apart from each other, The third positioning member is rotatably mounted to the frame and is located above the second positioning member, comprising: a third main body formed in a disc shape; a third follower portion protruding downward from the third main body and arranged between the second positive actuating portion and the second counter actuating portion, so that the second positioning member can rotate in opposite directions by respectively cooperating with the second positive actuating portion and the second counter actuating portion and the third follower portion to drive the third positioning member to rotate in opposite directions; the actuating portion is configured to press and disengage the second micro switch and the third micro switch.

11. The electric operating mechanism according to claim 3, characterized in that: The cam includes a first drive surface transitioning from the cam body to the cam protrusion and a second drive surface transitioning from the cam protrusion back to the cam body, the first drive surface and the second drive surface being planar.

12. A switch device, characterized in that: It comprises an electric operating mechanism according to any one of claims 1 to 11.

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