Manually / electrically operable electric operating mechanism

Abstract

The utility model relates to the technical field of electric operating mechanisms, and provides an electric operating mechanism capable of being operated manually / electrically, which comprises a circuit board, a manual driving shaft, an electric driving assembly and a transmission mechanism, and is characterized in that the circuit board is provided with a through hole suitable for the manual driving shaft to penetrate out; the head of the manual driving shaft extends out of the circuit board, and the tail of the manual driving shaft is connected with the transmission mechanism on the lower side of the circuit board and used for driving the transmission mechanism on the lower side of the circuit board to move. The electric driving assembly is electrically connected with the circuit board and is used for driving the transmission mechanism to move; the transmission mechanism is used for directly or indirectly driving the circuit breaker to be switched on or switched off. The through hole suitable for the manual driving shaft to penetrate out is formed in the circuit board, and the tail of the manual driving shaft is connected with the transmission mechanism on the lower side of the circuit board, so that the number of parts can be reduced and increased, and the production cost is low; the electric operating mechanism is compact in internal structure and small in size.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric operating mechanism technical field, concretely relates to a kind of electric operating mechanism of manual / electric operation. BACKGROUND

[0002] Electric operating mechanism is one of the external accessories of air switch, mainly for directly or indirectly on circuit breaker tripping or closing operation. It is widely used in industry, construction, transportation, energy, medical treatment and other multiple fields, and the switch of equipment is controlled by electric mode, to improve operating efficiency and safety.

[0003] In order to improve the flexibility of operation, adapt to different application scenarios, part electric operating mechanism integrates manual operation function, and these electric operating mechanism needs to increase a large number of components for fixing and mounting in order to add manual operation component, and it also occupies a large amount of space outside original device (such as circuit board, electric drive assembly and transmission mechanism), so that the volume of electric operating mechanism is larger. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of electric operating mechanism of manual / electric operation to solve above-mentioned technical problem, can reduce the number of component increased for integrating manual operation function, and production cost is lower;Electric operating mechanism internal structure is compact, and the volume is smaller.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The embodiment of the utility model proposes a kind of electric operating mechanism of manual / electric operation, including: circuit board, manual drive shaft, electric drive assembly and transmission mechanism, the through-hole suitable for the manual drive shaft to go out is opened in the circuit board;The head of the manual drive shaft is stretched out from the circuit board, the tail of the manual drive shaft is connected with the transmission mechanism on the lower side of the circuit board, when the head of the manual drive shaft rotates, the tail of the manual drive shaft drives the transmission mechanism on the lower side of the circuit board to move;The electric drive assembly is electrically connected with the circuit board, and the electric drive assembly is used to drive the transmission mechanism to move;The transmission mechanism is used to directly or indirectly drive circuit breaker to close or open.

[0007] In addition, the electric operating mechanism of manual / electric operation according to the utility model can also have the following additional technical features:

[0008] According to one embodiment of the utility model, the head of the manual drive shaft is installed with indicating plate, and the indicating plate is used to indicate the rotation angle of the manual drive shaft relative to initial state.

[0009] Preferably, the indication board is a circular panel, an inner ring of the circular panel is fixedly installed on the head of the manual driving shaft, so that the circular panel rotates synchronously with the manual driving shaft, and the circular panel is provided with sector color blocks concentric with the inner ring.

[0010] According to an embodiment of the present application, the circuit board is provided with a sampling circuit, a control unit and a driving circuit, the sampling circuit is used for collecting an external input opening signal and closing signal, so that the control unit controls the working state of the driving circuit according to the opening signal or the closing signal, the driving circuit is electrically connected with the electric drive assembly, when the driving circuit is switched to a first working state, the electric drive assembly is controlled to drive the transmission mechanism to drive the circuit breaker to close, when the driving circuit is switched to a second working state, the electric drive assembly is controlled to drive the transmission mechanism to drive the circuit breaker to open, wherein the sampling circuit is located below the indication board.

[0011] According to an embodiment of the present application, the circuit board is provided with first to fifth interfaces, the first interface is used for connecting the circuit board and the negative pole of the power supply, the second interface is used for connecting the ground wire, the third interface is used for connecting the circuit board and the positive pole of the power supply, the fourth interface is used for connecting the sampling circuit and the closing signal line, and the fifth interface is used for connecting the sampling circuit and the opening signal line.

[0012] According to an embodiment of the present application, the sampling circuit comprises a closing sampling circuit and an opening sampling circuit, the closing sampling circuit comprises a first pressure sensitive resistor, a first photoelectric coupler and a first diode, a first end of the first pressure sensitive resistor is connected with the closing signal line, a second end of the first pressure sensitive resistor is connected with the power supply of the electric operating mechanism, a light emitting device of the first photoelectric coupler is connected in parallel with the first pressure sensitive resistor, a light receiving device of the first photoelectric coupler is connected with the control unit, and the first diode is connected between the light emitting device of the first photoelectric coupler and the first pressure sensitive resistor; the opening sampling circuit comprises a second pressure sensitive resistor, a second photoelectric coupler and a second diode, a first end of the second pressure sensitive resistor is connected with the opening signal line, a second end of the second pressure sensitive resistor is connected with the power supply of the electric operating mechanism, a light emitting device of the second photoelectric coupler is connected in parallel with the second pressure sensitive resistor, a light receiving device of the second photoelectric coupler is connected with the control unit, and the second diode is connected between the light emitting device of the second photoelectric coupler and the second pressure sensitive resistor.

[0013] According to one embodiment of the present invention, a first load is connected in parallel to the two ends of the light-emitting device of the first optocoupler, a first current limiting component is connected between the first load and the first end of the first varistor, and a second current limiting component is connected in series between the first load and the first diode.

[0014] Preferably, the first current limiting component consists of two resistors connected in series.

[0015] The beneficial effects of this utility model are:

[0016] The electric operating mechanism of this utility model can be operated manually or electrically. By opening a through hole on the circuit board suitable for the manual drive shaft to pass through, the tail of the manual drive shaft is connected to the transmission mechanism on the lower side of the circuit board. Rotating the head of the manual drive shaft can drive the transmission mechanism to move, realizing the manual operation function. This can reduce the number of additional parts and reduce the production cost. It avoids occupying a lot of extra space for adding a manual drive component, making the internal structure of the electric operating mechanism compact and the size small. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the electric operating mechanism according to an embodiment of the present utility model;

[0018] Figure 2 This is a block diagram illustrating the electrical connection relationship between a circuit board and an electric drive assembly according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the circuit board structure according to an embodiment of the present invention;

[0020] Figure 4 This is a wiring diagram of the interface and external circuit on the circuit board according to one embodiment of the present invention;

[0021] Figure 5 A circuit diagram of a sampling circuit on a circuit board according to an embodiment of the present invention.

[0022] Figure 6 This is a side view of an electric operating mechanism according to an embodiment of the present invention.

[0023] Figure label:

[0024] 1. Circuit board; 11. Sampling circuit; 12. Control unit; 13. Drive circuit; 14. First interface; 15. Second interface; 16. Third interface; 17. Fourth interface; 18. Fifth interface; 2. Manual drive shaft; 21. Indicator plate; 3. Electric drive assembly; 31. Electric motor; 32. Drive gear set; 4. Transmission mechanism; 41. Cam assembly; 42. Slide table; 43. Handle; 44. Guide rail; 5. Frame. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] As shown in the figure, Figure 1 The electric operating mechanism of the embodiment of the utility model can be manually / electrically operated, comprising: a circuit board 1, a manual driving shaft 2, an electric driving assembly 3 and a transmission mechanism 4, a through hole suitable for the manual driving shaft 2 to pass through is formed on the circuit board 1; the head of the manual driving shaft 2 extends from the circuit board 1, the tail of the manual driving shaft 2 is connected with the transmission mechanism 4 on the lower side of the circuit board 1, when the head of the manual driving shaft 2 rotates, the tail of the manual driving shaft 2 drives the transmission mechanism 4 to move; the electric driving assembly 3 is electrically connected with the circuit board 1, the electric driving assembly 3 is used for driving the transmission mechanism 4 to move; the transmission mechanism 4 is used for directly or indirectly driving the circuit breaker to close or open.

[0027] It can be understood that the electric operating mechanism of the embodiment can realize the manual operation function by forming the through hole suitable for the manual driving shaft 2 to pass through on the circuit board 1, connecting the tail of the manual driving shaft 2 with the transmission mechanism 4 on the lower side of the circuit board 1, and rotating the head of the manual driving shaft 2 to drive the transmission mechanism 4 to move, which can reduce the number of additional components and has low production cost; the electric operating mechanism avoids occupying a large amount of space for additionally adding the manual driving assembly, so that the internal structure of the electric operating mechanism is compact and small in size.

[0028] As shown in the figure, Figure 2 In an embodiment of the utility model, the head of the manual driving shaft 2 is provided with an indicating plate 21, the indicating plate 21 is used for indicating the rotation angle of the manual driving shaft 2 relative to the initial state, which avoids the rotation direction error or the rotation angle being too large when the operator rotates the manual driving shaft 2, causing the wear or even damage of the devices (for example, the devices in the transmission mechanism 4) in the electric operating mechanism, and affecting the service life of the mechanism.

[0029] Preferably, the indicating plate 21 can be a circular ring panel, the inner ring of the circular ring panel is fixedly installed on the head of the manual driving shaft 2, so that the circular ring panel rotates synchronously with the manual driving shaft 2, and the circular ring panel is provided with a sector color block concentric with the inner ring, so that the operator can judge the rotation direction and angle according to the size of the display area of the sector color block. In some other embodiments of the utility model, a scale or symbol can also be directly marked on the indicating plate 21, so that the operator can operate according to the scale or symbol, and the embodiment is not limited in this way.

[0030] like Figure 2 As shown, in one embodiment of this utility model, the circuit board 1 is provided with a sampling circuit 11, a control unit 12, and a drive circuit 13. The sampling circuit 11 is used to collect externally input opening and closing signals so that the control unit 12 controls the working state of the drive circuit 13 according to the opening or closing signal. The drive circuit 13 is electrically connected to the electric drive assembly 3. When the drive circuit 13 switches to the first working state, it controls the electric drive assembly 3 to drive the transmission mechanism 4 to close the circuit breaker; when the drive circuit 13 switches to the second working state, it controls the electric drive assembly 3 to drive the transmission mechanism 4 to open the circuit breaker. The sampling circuit 11 is located below the indicator plate 21 (e.g., Figure 1 and 3 As shown), in Figure 3 In the diagram, the devices within the dashed box are those in the sampling circuit 11.

[0031] It is understandable that the sampling circuit 11 is mainly composed of small components. By placing the sampling circuit 11 below the indicator plate 21, the small space below the indicator plate 21 can be effectively utilized to control the size of the circuit board 1 and improve space utilization.

[0032] like Figure 3 and Figure 4 As shown, in one embodiment of this utility model, the circuit board 1 is provided with a first to a fifth interface. The first interface 14 is used to connect the circuit board 1 to the negative terminal of the power supply, the second interface 15 is used to connect the ground wire, the third interface 16 is used to connect the circuit board 1 to the positive terminal of the power supply, the fourth interface 17 is used to connect the sampling circuit 11 to the closing signal line, and the fifth interface 18 is used to connect the sampling circuit 11 to the opening signal line. Figure 4 This diagram illustrates the connection of interfaces 1 to 5 to external lines. Interface 1(-) represents interface 14, the interface marked with a ground wire is interface 15, interface 3(+) represents interface 16, interface 4 represents interface 4, and interface 5 represents interface 18. Interfaces 1(-) and 3(+) are connected to the negative and positive terminals of the power supply UC, respectively. Interface 4 is connected to the closing signal line, and interface 5 is connected to the opening signal line. The loop of sampling circuit 11 connected to the closing signal line and the loop of sampling circuit connected to the opening signal line share the output of interface 3(+) to form a closed loop.

[0033] It should be noted that the circuit board of most electric operating mechanisms is provided with six interfaces, wherein, in addition to three interfaces for connecting power supply and ground wire, a loop connected with the closing signal line and a loop connected with the opening signal line of the sampling circuit are separately provided with an interface to form a closed loop. The six interfaces occupy a large amount of space of the circuit board and have more external wiring. The five-interface setting of the circuit board 1 of the embodiment can reduce the number of interfaces and the space occupied by the interfaces. Since the number of interfaces is reduced, the insulating plate between two adjacent interfaces can be thickened to enhance the insulation effect.

[0034] As shown in Figure 5 the embodiment of the utility model, the sampling circuit 11 includes closing sampling circuit and opening sampling circuit, the closing sampling circuit includes first pressure sensitive resistance R1, first photoelectric coupler U1 and first diode D1, the first end of first pressure sensitive resistance R1 is connected with closing signal line through the fourth interface 17, the second end of first pressure sensitive resistance is connected with the power supply of electric operating mechanism through the third interface 16, the light emitting device of first photoelectric coupler U1 is connected with first pressure sensitive resistance R1 in parallel, the light receiving device of first photoelectric coupler U1 is connected with control unit 12, and first diode D1 is connected between the light emitting device of first photoelectric coupler U1 and first pressure sensitive resistance R1;The opening sampling circuit includes second pressure sensitive resistance R2, second photoelectric coupler U2 and second diode D2, the first end of second pressure sensitive resistance R2 is connected with opening signal line through the fifth interface 18, the second end of second pressure sensitive resistance R2 is connected with the power supply of electric operating mechanism through the third interface 16, the light emitting device of second photoelectric coupler U2 is connected with second pressure sensitive resistance R2 in parallel, the light receiving device of second photoelectric coupler U2 is connected with control unit 12, and second diode D2 is connected between the light emitting device of second photoelectric coupler U2 and second pressure sensitive resistance R2. In the figure, P1 indicates the integration of the first to fifth interfaces, and the first interface 14 and the second interface 15 can also be connected with other circuits (such as a driving circuit 13) on the circuit board 1 to supply power to other devices (such as electrical devices in the electric drive assembly 3) in the electric operating mechanism. The figure does not show this.

[0035] It can be understood that the light emitting device and the light receiving device of the photoelectric coupler are electrically isolated, and therefore the closing sampling circuit and the opening sampling circuit can share the third interface 16 connected with the negative pole of the power supply and also meet the safety requirements.

[0036] As shown in Figure 5 the embodiment of the utility model, the two ends of the light emitting device of the first photoelectric coupler U1 can be connected in parallel with a first load R3, a first current limiting component is connected between the first load R3 and the first end of the first pressure sensitive resistance R1, and a second current limiting component is connected in series between the first load R3 and the first diode D1, wherein the second current limiting component can be a current limiting resistor R4.

[0037] Preferably, the first current limiting component can be composed of two resistors (R5 and R6) connected in series.

[0038] Similarly, the two ends of the light-emitting device of the second optocoupler U2 can also be connected in parallel with the second load R7. The second load R7 and the second end of the second varistor R2 are connected with the third current limiting component. The second load R7 and the second diode D2 are connected in series with the fourth current limiting component. The third current limiting component is composed of two resistors (R5 and R6) connected in series. The fourth current limiting component can be the current limiting resistor R8.

[0039] In one embodiment of the present invention, the first end of the light-receiving device of the first optocoupler U1 can be connected to the power supply VCC through a resistor R11. The first end of the light-receiving device of the first optocoupler U1 is also connected to the control unit 12. The second end of the light-receiving device of the first optocoupler U1 is grounded. A voltage stabilizing capacitor C1 is provided between the first end and the second end of the light-receiving device of the first optocoupler U1.

[0040] Similarly, the first end of the light-receiving device of the second optocoupler U2 can also be connected to the power supply VCC through resistor R12. The first end of the light-receiving device of the second optocoupler U2 is also connected to the control unit 12. The second end of the light-receiving device of the second optocoupler U2 is grounded. A voltage stabilizing capacitor C2 is provided between the first end and the second end of the light-receiving device of the second optocoupler U2.

[0041] In one embodiment of the present invention, the electric drive assembly 3 may include a motor 31 and a drive gear set 32. The motor 31 is electrically connected to the circuit board 1 so that the motor 31 receives the control signal and power from the circuit board to drive the gear in the drive gear set 31 to rotate, thereby driving the transmission mechanism 4 connected to the drive gear set 32 ​​to move.

[0042] like Figure 6 As shown, in one embodiment of this utility model, the transmission mechanism 4 may include a cam assembly 41, a slide 42, and a handle 43. The cam of the cam assembly 41 is connected to a manual drive shaft 2, so that the cam assembly 41 can move under the drive of the manual drive shaft 2. The manual drive shaft 2 is also connected to a drive gear set 31, so that the electric drive assembly 3 drives the cam of the cam assembly 41 to move through the manual drive shaft 2. The slide 42 is connected to the driven member of the cam assembly 41 and can reciprocate. The handle 43 is movably connected to the slide 42, and the handle 43 is used to directly or indirectly drive the circuit breaker to close or open. In some other embodiments of this utility model, the cam of the cam assembly 41 may also be directly connected to the drive gear set 31, so that the cam assembly 41 can move under the drive of the drive gear set 31.

[0043] likeFigure 6 As shown in the utility model, in one embodiment of the utility model, the electric operating mechanism further comprises a rack 5, the circuit board 1, the manual drive shaft 2, the electric drive assembly 3 and the transmission mechanism 4 can be all installed on the rack 5, the transmission mechanism 4 can further comprise guide rails 44, both ends of the guide rails 44 can be horizontally fixed in the rack 5, recesses adapted to the guide rails 44 can be formed on the sliding table 42, so that the sliding table 42 can reciprocate along the guide rails 44. The sliding table 42 bottom can be provided with handle grooves suitable for the left and right movement of the handle 43, when the sliding table 42 slides to the left side, the handle 43 abuts against the left side inner wall of the handle groove, driving the circuit breaker into the first working state; when the sliding table 42 slides to the right side, the handle 43 abuts against the right side inner wall of the handle groove, driving the circuit breaker into the second working state, wherein the first working state is when the circuit breaker is closed, and the second working state is when the circuit breaker is opened; the first working state is when the circuit breaker is opened, and the second working state is when the circuit breaker is closed.

[0044] In the description of the utility model, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0045] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two components. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0047] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0048] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A manually / electrically operable electric operating mechanism, characterized in that, include: The circuit board (1), manual drive shaft (2), electric drive assembly (3), and transmission mechanism (4) are provided. The circuit board (1) has a through hole suitable for the manual drive shaft (2) to pass through. The head of the manual drive shaft (2) extends out of the circuit board (1), and the tail of the manual drive shaft (2) is connected to the transmission mechanism (4) on the lower side of the circuit board (1). When the head of the manual drive shaft (2) rotates, the tail of the manual drive shaft (2) drives the transmission mechanism (4) located on the lower side of the circuit board (1) to move. The electric drive assembly (3) is electrically connected to the circuit board (1) and is used to drive the transmission mechanism (4) to move. The transmission mechanism (4) is used to directly or indirectly drive the circuit breaker to close or open.

2. The electric operating mechanism according to claim 1, characterized in that, The head of the manual drive shaft (2) is equipped with an indicator plate (21) for indicating the rotation angle of the manual drive shaft (2) relative to the initial state.

3. The electric operating mechanism according to claim 2, characterized in that, The indicator panel (21) is a circular panel. The inner ring of the circular panel is fixedly installed on the head of the manual drive shaft (2) so that the circular panel rotates synchronously with the manual drive shaft (2). The circular panel is provided with fan-shaped color blocks concentric with the inner ring.

4. The electric operating mechanism according to claim 2 or 3, characterized in that, The circuit board (1) is provided with a sampling circuit (11), a control unit (12) and a drive circuit (13). The sampling circuit (11) is used to collect externally input opening and closing signals so that the control unit (12) controls the working state of the drive circuit (13) according to the opening or closing signal. The drive circuit (13) is electrically connected to the electric drive assembly (3). When the drive circuit (13) switches to the first working state, it controls the electric drive assembly (3) to drive the transmission mechanism (4) to close the circuit breaker. When the drive circuit (13) switches to the second working state, it controls the electric drive assembly (3) to drive the transmission mechanism (4) to open the circuit breaker. The sampling circuit (11) is located below the indicator plate (21).

5. The electric operating mechanism according to claim 4, characterized in that, The circuit board (1) is provided with a first to a fifth interface. The first interface (14) is used to connect the circuit board (1) and the negative terminal of the power supply. The second interface (15) is used to connect the ground wire. The third interface (16) is used to connect the circuit board (1) and the positive terminal of the power supply. The fourth interface (17) is used to connect the sampling circuit (11) and the closing signal line. The fifth interface (18) is used to connect the sampling circuit (11) and the opening signal line.

6. The electric operating mechanism according to claim 5, characterized in that, The sampling circuit (11) includes a closing sampling circuit and a closing sampling circuit. The closing sampling circuit includes a first varistor, a first optocoupler, and a first diode. The first end of the first varistor is connected to the closing signal line, and the second end of the first varistor is connected to the power supply of the electric operating mechanism. The light-emitting device of the first optocoupler is connected in parallel with the first varistor, and the light-receiving device of the first optocoupler is connected to the control unit (12). The first diode is connected between the light-emitting device of the first optocoupler and the first varistor. The closing sampling circuit includes a second varistor, a second optocoupler, and a second diode. The first end of the second varistor is connected to the closing signal line, and the second end of the second varistor is connected to the power supply of the electric operating mechanism. The light-emitting device of the second optocoupler is connected in parallel with the second varistor, and the light-receiving device of the second optocoupler is connected to the control unit (12). The second diode is connected between the light-emitting device of the second optocoupler and the second varistor.

7. The electric operating mechanism according to claim 6, characterized in that, The first optocoupler has a first load connected in parallel across its light-emitting device, a first current-limiting component connected between the first load and the first end of the first varistor, and a second current-limiting component connected in series between the first load and the first diode.

8. The electric operating mechanism according to claim 7, characterized in that, The first current limiting component consists of two resistors connected in series.

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