CN218769145U - Driving structure of switch - Google Patents

Abstract

The utility model provides a drive structure of switch, includes that electricity is operated the mechanism and the movable contact subassembly, electricity is operated the mechanism and is included motor, gear train and drive mechanism, and the motor passes through gear train drive mechanism, and drive mechanism is connected with the movable contact subassembly, the movable contact subassembly includes that the contact supports and sets up the moving contact on the contact supports, the gear train includes the output gear, drive mechanism includes lever and connecting rod, lever and contact support to rotate the setting, and the connecting rod is connected between lever and contact support, lever and the cooperation of output gear drive, and drive mechanism does not have complicated dropout structure, not only the transmission is reliable and small.

Description

Driving structure of switch

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to drive structure of switch.

Background

The existing switch is provided with a driving structure of an electric operating mechanism, the transmission mechanism of the electric operating mechanism needs to be matched with a transmission structure of a button or a handle, the automatic degree is low, the structure is relatively complex, the logic of a control circuit is complex, and the switch is large as a whole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a drive structure of switch.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a drive structure of switch, includes electrical operation mechanism and moving contact subassembly, electrical operation mechanism includes motor, gear train and drive mechanism, and the motor passes through gear train drive mechanism, and drive mechanism is connected with the moving contact subassembly, the moving contact subassembly includes that the contact supports and sets up the moving contact on the contact supports, the gear train includes the output gear, drive mechanism includes lever and connecting rod, lever and contact support rotate the setting, and the connecting rod is connected between lever and contact support, lever and output gear drive cooperation.

Preferably, the moving contact comprises two moving contact pieces, and the two moving contact pieces are provided with moving contacts and are arranged on the contact support side by side.

Preferably, the lever and the output gear are coaxially arranged, the lever is provided with at least one limiting bulge matched with the output gear, the output gear is provided with at least one driving bulge matched with the lever, and the output gear rotates to enable the driving bulge and the limiting bulge to limit so as to drive the lever to rotate.

Preferably, the output gear and the axis of the lever are arranged in parallel at intervals, the output gear is radially provided with a first gear, the lever gear is radially arranged on the lever, the first gear and the lever gear are in meshing transmission, and the first gear of the output gear and/or the lever gear of the lever are sector gears.

Preferably, the lever is provided with a first connecting hole for connecting the connecting rod, the contact support is further provided with a second connecting hole for connecting the connecting rod, the connecting rod is a U-shaped rod, one end of the connecting rod is inserted into the first connecting hole of the lever, and the other end of the connecting rod is inserted into the second connecting hole of the contact support.

Preferably, the output shaft of the motor is parallel to the axial direction of the lever, a transmission gear on the output shaft of the motor is in direct driving fit with the output gear, the other end of the lever, which is far away from the output gear, is connected with one end of a connecting rod, and the other end of the connecting rod is in supporting connection with the contact.

Preferably, the contact support is radially provided with a contact cavity penetrating through the contact support, two ends of the contact cavity are respectively provided with a first opening and a second opening, a cavity side wall bulge is arranged in the contact cavity and is close to the first opening, and the middle part of the movable contact piece is abutted against the cavity side wall bulge under the action of the contact spring, so that the two movable contact pieces can respectively rotate based on the cavity side wall bulge as a fulcrum.

Preferably, the lever is provided with a first connecting hole for connecting the connecting rod, at least one limiting bulge matched with the output gear and a first bulge, and the first bulge triggers the microswitch K to switch the state when the lever rotates to a position where the driving switch is closed and/or the driving switch is disconnected; the driving protrusion is arranged on the end face, close to one end of the lever, of the output gear, and first teeth are arranged on the radial side wall of the output gear.

Preferably, the electric operating mechanism further comprises a control circuit, the control circuit comprises at least one microswitch K, and when the output gear or the lever or the contact support rotates to a position where the drive switch is closed and/or disconnected, the microswitch K is triggered to switch the state.

Preferably, the device comprises a partition plate, the gear set comprises an output gear and a plurality of transmission gears, and the motor drives the output gear through the transmission gears; the transmission gears and the output gears are arranged on one side of the partition plate, and the lever, the connecting rod, the contact support and the moving contact are arranged on the other side of the partition plate.

The utility model discloses a drive structure of switch, electricity behaviour mechanism and movable contact subassembly pass through the drive mechanism transmission, simple structure, and not only the transmission is reliable and small.

In addition, the lever is arranged coaxially with the output gear, so that the occupied space can be reduced.

In addition, the moving contact comprises two moving contact pieces, the contact reliability and the current-carrying capacity of the contact can be increased, the moving contact pieces are installed in contact cavities supported by the contact, the overtravel is realized through the fixation of contact springs, and the assembly is simple and convenient.

In addition, the driving structure is provided with a partition board which separates the gear set from the transmission mechanism to improve reliability, and the transmission mechanism and the moving contact are convenient to install.

Drawings

Fig. 1 is a schematic view of an overall structure of a first embodiment of the switch of the present invention;

fig. 2 is an exploded view of the overall structure of the first embodiment of the switch of the present invention;

fig. 3 is a schematic diagram of an internal structure of the first embodiment of the switch of the present invention, showing a structure of a side surface of the first embodiment of the electric operating mechanism;

fig. 4 is a schematic diagram of another internal structure of the first embodiment of the switch of the present invention, showing the structure of another side of the first embodiment of the electric operating mechanism;

fig. 5 is a schematic view of the switch of the present invention with the electric operating mechanism removed from one side of the electric operating housing;

fig. 6 is a schematic side view of a second embodiment of an electric operating mechanism in a housing of the switch of the present invention;

fig. 7 is another schematic side view of an embodiment of an electric operating mechanism in a housing of the switch of the present invention;

fig. 8 is a side schematic view of the output gear and lever of the switch electric operator of the present invention;

fig. 9 is another side schematic view of the output gear and lever of the switch electric operating mechanism of the present invention;

fig. 10 is a cross-sectional view of the movable contact assembly of the switch of the present invention;

fig. 11 is a schematic view of the overall structure of a second embodiment of the switch of the present invention;

fig. 12 is a schematic diagram of an internal structure of a second embodiment of the switch of the present invention.

Detailed Description

The following embodiments are given in conjunction with the accompanying drawings to further illustrate the switch of the present invention. The switch of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1-5, the utility model discloses an embodiment of an intelligent switch, including shell 1 and the electric operator 3 and at least one phase circuit that set up in shell 1, every phase circuit all includes moving contact subassembly, static contact 220, first wiring end 21 and second wiring end 22, the moving contact subassembly includes contact support 53 and moving contact 530, first wiring end 21 and second wiring end 22 are connected with moving contact 530 and static contact 220 respectively, electric operator 3 is connected with the contact support 53 of at least one phase circuit, drive moving contact 530 and static contact 220 contact and separation, realize the closing and the disconnected control of switch, the one end of first wiring end 21 and second wiring end 22 is connected with moving contact 530 and static contact 220 respectively, the other end is used for the wiring; the electrically operated mechanism 3 is provided with corresponding control terminals 310 for receiving control signals. One of the first terminal 21 and the second terminal 22 serves as a wire inlet end, and the other serves as a wire outlet end.

The switch of the embodiment is a novel intelligent switch, adopts the electric operating mechanism 3 to drive the moving contact 530, does not adopt the traditional operating mechanism with a lock catch and a jump catch, namely, does not set a button or a handle mechanically driven with the operating mechanism, but carries out closing and breaking control through an analog signal key 50 or an external control signal, and has simple structure, small volume and high reliability.

As shown in fig. 1-5, the first terminal 21 and the second terminal 22 are both disposed at one end of the switch. The terminals 21 and 22 may be disposed inside the switch and connected to a terminal 23 (see fig. 3), and an external copper bar is connected to the terminal 23 in a plug-in manner. Alternatively, as shown in fig. 11 and 12, in the second embodiment, the first terminal 21 and the second terminal 22 may also extend out of the switch, and the portion extending out of the housing 1 is a wiring board structure, and is connected to an external bus bar in a plug-in manner. In addition, the user can arrange corresponding connection terminals 23 on the parts of the first terminal 21 and the second terminal 22 extending out of the switch according to the requirement so as to match different connection modes or directly connect without arranging the connection terminals 23.

The utility model discloses an intelligence switch replaces original ordinary switch, not only improves load-carrying current ability and reliability greatly, has promoted intelligent control moreover. The utility model discloses an improvement point lies in, the drive structure of the switch that mechanism and movable contact subassembly are constituteed is controlled to the electricity, and mechanism and movable contact subassembly are controlled to the electricity pass through the drive mechanism transmission, and simple structure not only the transmission is reliable and small.

The switch adopts the electric operating mechanism 3 to drive the moving contact 530, the on-off control of the intelligent switch can be realized by controlling the electric operating mechanism 3 through the control terminal 310, the connection of a main loop is carried out through the first terminal 21 and the second terminal 22, and the intelligent switch has the advantages of simple structure, small size and high reliability.

As shown in the first embodiment shown in fig. 1 to 5, the switch of this embodiment is a single-phase switch, and only one phase circuit includes a set of moving contact assembly, fixed contact 220, first terminal 21 and second terminal 22; the electric operating mechanism 3 is connected with a moving contact component of a phase circuit, the electric operating mechanism 3 comprises a motor 31, a gear set 30 and a transmission mechanism 5, the moving contact component comprises a moving contact 530 arranged on a contact support 53, the motor 31 drives the transmission mechanism 5 through the gear set 30, the transmission mechanism 5 is connected with the contact support 53, the moving contact 530 is driven to be in contact with and separated from a fixed contact 220, the moving contact 530 is arranged opposite to the fixed contact 220, one end of a first terminal 21 and one end of a second terminal 22 are respectively connected with the moving contact 530 and the fixed contact 220, and the other end of the first terminal 21 and the other end of the second terminal 22 are used for wiring. The first terminal 21 is connected with the movable contact 530, and the second terminal 22 is connected with the fixed contact 220; alternatively, the first terminal 21 may be connected to the stationary contact 220, and the second terminal 22 may be connected to the movable contact 530. In the embodiment, the first terminal 21 is used as a wire inlet end, and the second terminal 22 is used as a wire outlet end, which can be interchanged as required.

Preferably, as shown in fig. 3-5, the switch is further provided with a current collecting device 7 for collecting a current signal of the switch. Preferably, the current collection device 7 is arranged at the incoming line end, and the current collection device 7 is coupled with the first terminal 21. Further, preferably, the current collecting device 7 of the present embodiment is a current transformer, and the first terminal 21 passes through the current transformer. Of course, as another embodiment, the current collecting device 7 may also be a shunt, preferably a manganin shunt, and the first terminal 21 is integrally formed with the shunt.

As shown in fig. 5 and 7, in the intelligent switch of this embodiment, the moving contact 530 is driven by the electrical operation mechanism 3, the conventional operating mechanism with a latch and a trip is not provided, and the external operating handle or button is not provided, so that the electrical operation mechanism 3 can be controlled by the control terminal 310 to realize on-off control of the intelligent switch.

Preferably, as shown in fig. 3 to 5, the switch is further provided with an arc extinguishing mechanism 6, the arc extinguishing mechanism 6 includes an arc extinguishing chamber 60, and the arc extinguishing chamber 60 is disposed corresponding to the moving contact 530 and the stationary contact 220, and is configured to extinguish an arc generated when the moving contact 220 and the stationary contact 220 are separated, so as to improve a circuit bearing capacity of the switch. Of course, as another embodiment, the arc extinguishing mechanism 6 may not be provided.

As shown in fig. 6-7, the gear set 30 includes an output gear 33 and a plurality of transmission gears 32, the motor 31 drives the output gear 33 through the transmission gears 32, and the output gear 33 is in driving fit with the transmission mechanism 5. The transmission gear 32 of the present embodiment includes a first transmission gear sleeved on the output shaft of the motor 31, and the first transmission gear directly drives the output gear 33, and as another embodiment, may further include a plurality of second transmission gears for transmitting between the first transmission gear and the output gear 33. Preferably, all gears of the gear set, including the output gear 33 and the transmission gear 32, are spur gears, and teeth are arranged on radial side walls of the output gear 33 and the transmission gear 32, so that the transmission is simple and reliable. Of course, other embodiments may be bevel gears or bevel gears. The number of the transmission gears 32 can be adjusted according to requirements.

As shown in fig. 3-7, the transmission mechanism 5 includes a lever 51 and a connecting rod 52, the movable contact assembly includes a contact support 53 and a movable contact 530 disposed on the contact support 53, the lever 51 and the contact support 53 are rotatably disposed, the connecting rod 52 is connected between the lever 51 and the contact support 53, the lever 51 is in driving fit with the output gear 33, the movable contact 530 is mounted on the contact support 53, the output gear 33 drives the lever 51 to rotate, the lever 51 drives the contact support 53 to rotate through the connecting rod 52, and the contact support 53 rotates to drive the movable contact 530 to swing, so as to implement the closing and opening actions of the switch, and the structure is simple without a complex tripping structure.

Preferably, the transmission mechanism 5 is composed of a lever 51 and a link 52, and only has the lever 51 and the link 52, the lever 51 is connected with the output gear 33, and the link 52 is connected between the lever 51 and the contact support 53, so that the structure is very simple, no complex structure is provided, the transmission is reliable, and the volume is small. Of course, as an embodiment of the deterioration, other transmission connecting rods can be added; alternatively, the contact support 53 is directly actuated by the lever 51, for example, by an extension of the lever 51 provided with an integral actuating arm which engages in an actuating groove of the plug support 53.

Preferably, the moving contact assembly further comprises a contact support spring 54, the contact support 53 is installed in the housing 1 through the contact support spring 54, and the acting force of the contact support spring 54 drives the contact support 53 to rotate to the breaking position, so that the control circuit can be simplified. Of course, as another embodiment, the contact supporting spring 54 may not be provided.

As shown in fig. 2, the housing 1 of the switch of the present embodiment includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are relatively buckled to form the housing 1 of the switch, and the two are buckled to form an integral housing 1. The electric operating mechanism 3 is arranged at one end of the shell 1 and is mainly positioned in the second shell 12, the phase circuit is arranged at the other end of the shell 1 and is mainly covered by the second shell 11, so that the control circuit of the electric operating mechanism 3 is far away from a wiring terminal of a main circuit of the switch to separate weak current and strong current.

Preferably, the electric operation mechanism 3 comprises an electric operation shell 8, a motor 31, a gear set 30 and a transmission mechanism 5 are arranged in the electric operation shell 8, and the electric operation shell 8 is assembled into an integral driving module with the electric operation mechanism 3 and then installed in the shell 1, so that the assembling efficiency is high, and the insulativity is improved. In a preferred embodiment, the contact holder 53 is also mounted on the electrical operating housing 8, the contact holder 53 is at least partially mounted in the electrical operating housing 8, and the end of the movable contact 530 having the movable contact extends out of the electrical operating housing 8 to be engaged with the stationary contact 220.

Referring to fig. 3-5, in the first embodiment of the electric operating mechanism 3, the motor 31 is disposed at one end of the housing, the first terminal 21 and the second terminal 22, which are respectively a wire inlet end and a wire outlet end, are disposed at the other end of the housing 1, the first direction is from the end of the housing 1 where the motor 31 is disposed to the end where the wire inlet end and the wire outlet end are disposed, and the height direction of the housing 1 is also from the end where the motor 1 is disposed, in the height direction, the motor 1 is disposed above the lever 51 and the output gear 33 (not shown in the figures by being hidden), the lever 51 is disposed between the motor 1 and the contact support 53, the link 52 is connected between the lever 51 and the contact support 53, and the ends of the first terminal 21 and the second terminal 22, which are used for wiring, both extend from the end away from the motor 31 in the first direction of the housing 1. In the embodiment, the first terminal 21 and the second terminal 22 are both arranged at the other end of the shell, which is not only beneficial to wiring but also beneficial to simplifying the structural layout, and simultaneously, strong electricity is far away from weak electricity. Of course, as another embodiment of the deterioration, the first terminal 21 and the second terminal 22 may not be provided on the same end side wall.

As shown in fig. 6 to 7, the second embodiment of the electric operating mechanism 3 is different from the first embodiment in the mounting positions of the motor 31 and the lever 51. In the second embodiment, the lever 51 is disposed at one end of the housing 1 away from the first terminal 21 and the second terminal 22, and the motor 31 is disposed between the lever 51 and the first terminal 21. In the height direction, the lever 51 and the output gear 33 are arranged above the motor 31, the motor 1 is arranged between the lever 51 and the contact support 53, the connecting rod 52 is connected between the lever 51 and the contact support 53, the output shaft of the motor 31 is parallel to the axial direction of the lever 51, the lever 51 is coaxially arranged with the output gear 33, and a transmission gear on the output shaft of the motor 31 is directly in driving fit with the output gear 33. Referring to fig. 7, the other end of the lever 51 from the output gear 33 is connected to a link 52, and the link 52 is connected to a contact support 53.

Preferably, as shown in fig. 5 and 7, the electric operating mechanism 3 further includes a control circuit 4, the motor 31 is connected to the control circuit 4, and the control circuit 4 receives a control signal and controls the motor 31 to rotate forward, backward and/or stop rotating, so as to drive the gear set 30 and the transmission mechanism 5. Preferably, the control circuit comprises at least one microswitch for monitoring the position of the gear set 30 and/or the transmission 5 to achieve accurate closing and opening control. Preferably, the control circuit 4 includes a circuit board 40, the components such as the micro switch and the diode are mounted on the circuit board 40 for easy assembly, and the control terminal 310 may also be disposed on the circuit board 40 and extend out of the housing 1 for easy connection. Referring to fig. 2, a communication interface hole is provided on the housing 1 for the control terminal 310 of the electric actuator 3 to protrude. Preferably, as another embodiment, the control terminal 310 may be connected to the circuit board 40 by a wire, which extends out of the housing 1 and is connected to a controller of the electric distribution box. Preferably, the control terminal 310 and an external controller may be plug-connected through a plug terminal.

As shown in fig. 3 to 5, the electric operating mechanism 3, the moving contact assembly, the fixed contact 220, and the first terminal 21 and the second terminal 22 as the inlet and outlet terminals are sequentially arranged along a first direction, i.e., a height direction of the housing 1, and the arc extinguishing mechanism 6 is disposed between the first terminal 21 and the second terminal 22 along a second direction, i.e., a length direction of the housing 1. The switch of this embodiment, adopt the electrical operation mechanism 3 to drive the moving contact 530, can control the closing and the disconnected control that realize the switch major loop to electrical operation mechanism 3 through control signal, and set up the arc extinguishing mechanism and improve the circuit bearing capacity, set up electrical operation mechanism 3 and the first wiring end 21 and the second wiring end 22 as the switch major loop wiring end respectively at the both ends of shell 1 moreover, not only do benefit to the wiring but also do benefit to and simplify the structural configuration, keep away from the light current with the forceful electric power.

Preferably, as shown in fig. 3 to 5, the electric operating mechanism 3 includes a motor 31, a gear train 30, a control circuit 4 and a transmission mechanism 5, the motor 31 is disposed at one end of the housing 1 in the height direction, the first terminal 21 and the second terminal 22 are disposed at the other end of the housing 1 in the height direction at intervals side by side, the gear train 30, the transmission mechanism 5 and the control circuit 4 are stacked in a third direction, i.e., the width (i.e., thickness) direction of the housing 1, and are located between the arc extinguishing mechanism 6 and the motor 31 in the first direction, the arc extinguishing mechanism 6 is disposed between the movable contact assembly and the other end of the housing 1 where the first terminal 21 and the second terminal 22 are disposed in the first direction, the arc extinguishing mechanism 6 is located between the first terminal 21 and the second terminal 22 in the second direction, the movable contact component is connected with the transmission mechanism 5, the movable contact component is located between the transmission mechanism 5 and the corresponding arc extinguishing mechanism 6 in the first direction, one end of the fixed contact 220, which is provided with the fixed contact, is arranged corresponding to one end of the corresponding movable contact 530, which is provided with the movable contact, the arc extinguishing mechanism 6 comprises an arc extinguishing chamber 60, the arc extinguishing chamber 60 is superposed on the corresponding fixed contact 220 along the two directions, namely the length direction of the shell 1, and the first direction, the second direction and the third direction are perpendicular to each other. The gear set 30, the transmission mechanism 5 and the control circuit 4 of the present embodiment are sequentially stacked along the third direction, so that the structure is compact, the size of the switch is reduced, the transmission mechanism 5 is located between the gear set 30 and the control circuit 4, and the relationship between the three can be adjusted according to the requirement, for example, the gear set 30 is located in the middle. The axial direction of the output shaft of the motor 1 is arranged along a third direction.

Preferably, as shown in fig. 3 to 7, a partition 81 is provided in the housing 1 to separate the transmission mechanism 5 from the gear set 30 and/or the control circuit 4, and the lever 51 and the contact support 53 are rotatably mounted on the partition 81, and insulation and reliability are improved by the partition 81. The electric operating housing 8 of the present embodiment includes a partition 81, an electric operating first housing 82 and an electric operating second housing 83, the electric operating first housing 82 and the electric operating second housing 83 are respectively located at both sides of the partition 81, the partition 81 and the electric operating first housing 82 are oppositely disposed to form an electric operating first space for assembling the gear set 30, and the partition 81 and the electric operating second housing 83 are oppositely disposed to form an electric operating second space for assembling the transmission mechanism 5 and the control circuit 4; the contact support 53 and the moving contact 530 are also installed in the electrically operated second space, one end of the moving contact 530, which is provided with a moving contact, extends out of the electrically operated housing 8, the partition plate 81, the electrically operated first housing 82 and the electrically operated second housing 83 are fixedly connected and then assembled into the housing 1, and a moving contact avoiding hole through which the moving contact 530 penetrates is formed in the electrically operated housing 8.

As another embodiment, the components may be directly mounted in the housing 1 without providing the electrically operated first housing 82, the electrically operated second housing 83, and the partition 81, and may be positioned and mounted by a structure on the side wall of the housing 1. Or only set up baffle 81, baffle 81 can dismantle with shell 1 and be connected be equipped with motor fixed knot on the baffle 81, can install again in shell 1 after assembling motor 31 and baffle 81, fix motor 31 through baffle 81 and the cooperation of shell 1, convenient assembling is efficient, and the reliability is high.

Preferably, referring to fig. 1, the housing 1 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are buckled with each other to form the housing 1 of the switch. Preferably, the engaging direction of the first housing 11 and the second housing 12 is the first direction, but may be the second or third direction. The first shell 11 and/or the second shell 12 are/is provided with a pressing convex rib which presses the partition 81 or the electric operation shell 8 during buckling, and/or the first shell 11 and/or the second shell 12 are/is provided with a buckling structure which is in clamping fit with the partition 81 or the electric operation shell 8, and the first shell 11 and/or the second shell 12 are/is fixedly connected with a screw, so that the shell 1 and the partition 81 or the electric operation shell 8 can be detachably mounted.

Preferably, as shown in fig. 8-9, the output gear 33 of the present embodiment is in transmission fit with the lever 51, and the output gear 33 of the present embodiment is in transmission fit with the lever 51 coaxially. The lever 51 is provided with a first connecting hole 512 for connecting the connecting rod 52, at least one limiting protrusion 511 matched with the output gear 33 and a first protrusion 510, the limiting protrusion 511 is convexly arranged on the end face of one end of the lever 51 close to the output gear 33, the first protrusion 510 is convexly arranged on the radial side wall of the connecting rod 52, and the lever 51 triggers the microswitch K to switch the state when rotating to the drive switch closing and/or drive switch breaking position.

The output gear 33 is provided with at least one driving protrusion 330 which is matched with the lever 51, the driving protrusion 330 is convexly arranged on the end face of one end, close to the lever 51, of the output gear 33, and a first tooth 331 is arranged on the radial side wall of the output gear 33 and is used for being meshed with the transmission gear 32. The output gear 33 and the lever 51 are coaxially assembled, the driving boss 330 and the limiting boss 511 are arranged in a staggered mode, the transmission gear 32 drives the output gear 33 to rotate through the first tooth 331, when the output gear 33 rotates to enable the driving boss 330 to limit the limiting boss 511, the lever 51 is driven to rotate, and the driving lever 51 rotates between a lever closing position and a lever breaking position. The lever 51 of this embodiment is provided with two limiting protrusions 511 at two sides of the rotation axis of the lever 51, the driving protrusion 330 drives the lever 51 to rotate towards the lever closing position through one limiting protrusion 511, and drives the lever 51 to rotate towards the lever breaking position through the other limiting protrusion 511, and the directions of the rotation of the lever 51 towards the lever closing position and the rotation of the lever 51 towards the lever breaking position are opposite. Two driving protrusions 330 are also provided on the output gear 33, but it is also possible to provide one driving protrusion 330 and one restricting protrusion 511.

The link 52 is a U-shaped rod, one end of which is inserted into the first connection hole 512 of the lever 51, and the other end of which is inserted into the second connection hole 533 of the contact support 53, so as to link the two.

It should be noted that, the output gear 33 of the present embodiment is disposed coaxially with the lever 51, so that the occupied space can be reduced. As another embodiment, the output gear 33 and the lever 51 may not be coaxially disposed, for example, the output gear 33 and the lever 51 are spaced apart from each other in parallel with the axis, the output gear 33 is radially provided with a first gear, the lever 51 is radially provided with a lever gear, and the first gear and the lever gear are in mesh transmission. In addition, as another embodiment, the output gear 33 and the lever 51 may be driven by gear engagement, and the first gear of the output gear 33 and/or the lever gear of the lever 51 may be a sector gear, and when the driving lever 51 is rotated to the lever closing position or the lever breaking position, it is also possible that the output gear 33 and the lever 51 are disengaged from each other, so that the control circuit may drive the motor to rotate for a preset time period according to the control signal without providing the microswitch K to perform the closing and breaking control.

Preferably, in order to realize accurate control of closing and opening, the control circuit 4 of the electric operating mechanism 3 is further provided with at least one microswitch K, and when the output gear 33 or the lever 51 or the contact support 53 rotates to a position for driving the switch to be closed and/or driving the switch to be opened and closed, the switching state of the microswitch K is triggered, so as to monitor the position state of the gear set 30 and/or the transmission mechanism 5 and/or the contact support 53, or to monitor the closing state or the opening state of the switch. In this embodiment, when the switch is in a closed state, i.e. the lever 51 rotates to a lever closed position, the first protrusion 510 on the lever 51 acts on the microswitch K; when the breaker is in the breaking state, the first projection 510 on the lever 51 avoids the microswitch K. As an alternative embodiment, the microswitch K can also be acted on by the output gear 33 or the contact support 53. As another embodiment, two microswitches may be provided, in which the gear set 30 and/or the transmission 5 and/or the contact support 53 act on one of the microswitches to clear the other microswitch when the switch is in the closed state, and in which the gear set 30 and/or the transmission 5 and/or the contact support 53 clear the one microswitch to act on the other microswitch when the switch is in the open state.

According to the switch, a traditional operating mechanism with a lock catch and a jump catch is not adopted, a button or a handle is not arranged, the transmission mechanism 5 is controlled only through the control circuit, the control circuit is not interfered by manual closing and breaking operation, the control circuit is simple in structure, external equipment such as a distribution box and the like controls forward rotation and reverse rotation of the motor by changing the polarity direction of an input power supply, the control circuit is automatically cut off after the switch is closed or broken, the switch is controlled to be closed and broken only through one microswitch K, and the switch is beneficial to reducing the switch volume and simplifying the trigger structure of the microswitch K.

As shown in fig. 3-5 and 10, the preferred embodiment of the moving contact assembly includes a contact support 53, a moving contact 530 and a contact spring 535, and the moving contact 530 is connected to the contact support 53 through the contact spring 535 to realize the over travel. The contact support 53 of this embodiment is provided with a contact cavity 534, the movable contact 530 extends into the contact cavity 534, and the end provided with the movable contact extends out of the contact cavity 534, and the contact spring 535 is installed in the contact cavity 534 and acts between the movable contact 530 and the side wall of the contact cavity 534 to fix the movable contact 530. Of course, as other embodiments, the contact support 53 does not have the contact cavity 534, and a corresponding snap structure may be provided to connect with the movable contact 530. The moving contact 530 of this embodiment includes two moving contacts 531 arranged side by side at an interval, the moving contacts are arranged on the two moving contacts 531, and are installed side by side on the contact support 53, and two stationary contacts are arranged on the corresponding stationary contacts 220. Of course, as other embodiments, the movable contact 530 may also be provided with only one movable contact 531 and one movable contact, and the fixed contact may also be provided with one fixed contact correspondingly.

The contact support 53 is rotatably installed in the housing 1, a rotary installation structure 532 is arranged at the axial end of the contact support 53, and the rotary installation structure 532 is a rotary protrusion or a rotary groove; the contact support 53 is provided with a contact cavity 534 penetrating through the contact support 53 in the radial direction, the contact support 53 is further provided with a second connecting hole 533 used for connecting the connecting rod 52, two ends of the contact cavity 534 are respectively provided with a first opening 5341 and a second opening 5343, a cavity side wall projection 5342 is arranged in the contact cavity 534, the cavity side wall projection 5342 is arranged close to the first opening 5341, the middle part of the movable contact 531 is abutted against the cavity side wall projection 5342 under the action of the contact spring 535, so that the two movable contacts 531 can respectively rotate based on the cavity side wall projection 5342 as a fulcrum.

As shown in fig. 3-5, a preferred embodiment of a first terminal 21 and a second terminal 22. The first terminal 21 is integrally formed, a first end of the first terminal is connected to the connection terminal 23 or extends out of the housing 1 to serve as a wire inlet end, a second end of the first terminal is connected to the movable contact 530 through a flexible conductor, the first terminal 21 is further provided with a first tab 213, and the first tab 213 extends from a position close to a breaking position of the movable contact 530 to the direction of the arc extinguish chamber 60 of the arc extinguishing mechanism 6. The second terminal 22 is integrally formed, a first end of the second terminal is connected to the connection terminal 23 or extends out of the housing 1 to serve as a wire outlet end, a second end of the second terminal is provided with a static contact to serve as a static contact 220, that is, the static contact 220 and the second terminal 22 are integrally formed, the second terminal 22 is further provided with a second arc tab 223, the second arc tab 223 extends from the static contact 220 to the direction of the arc extinguish chamber 60 of the arc extinguish mechanism 6, the first terminal 21 and the second terminal 22 connected with the movable contact 530 and the static contact 220 are directly used as wire inlet and outlet ends, and the second terminal 22 and the static contact 220 are integrally formed.

The first arc striking plate 213 and the second arc striking plate 223 are respectively and closely arranged at two sides of the arc extinguish chamber 60 in the second direction, and respectively introduce electric arcs generated when the moving contact and the static contact are disconnected into the arc extinguish chamber 60, so that rapid arc extinction is realized. The plane of the first arc striking plate 213 and the plane of the second arc striking plate 223 are substantially parallel to the plane of the arc extinguishing grid plate of the arc extinguishing chamber 60, the second arc striking plate 223, the arc extinguishing chamber 60 and the first arc striking plate 213 are sequentially arranged along the length direction of the shell 1, and the plane of the swing direction of the movable contact 530 is parallel to the length direction of the shell 1.

The first connecting piece 214 is arranged between the first end and the second end of the first terminal 21, the second connecting piece 224 is arranged between the first end and the second end of the second terminal 22, and the first connecting piece 214 and the second connecting piece 224 are arranged in parallel at intervals. Preferably, the first connecting piece 214 passes through a current transformer as the current sampling device 7. As another embodiment, the first terminal 21 may be provided with an integrated shunt as the current sampling device 7.

Specifically, the first terminal 21 includes a first outer contact piece 211, a first contact piece 214, a first inner contact piece 212 and a first arc piece 213, which are connected in sequence and serve as a first end, the first inner contact piece 212 is connected with one end of the first contact piece 214 in a bending manner, the first inner contact piece 212 is electrically connected with the movable contact 530, the first inner contact piece 212 is electrically connected with two movable contact pieces 531 through two flexible wires, the first outer contact piece 211 is connected with the other end of the first contact piece 214 in a bending manner, the first outer contact piece 211 is connected with the connection terminal 23, the first arc piece 213 is connected with one side edge of the first inner contact piece 212, the planes of the first arc piece 213, the first inner contact piece 212 and the first outer contact piece 211 are parallel to and perpendicular to the plane of the first contact piece 214, and the current sampling device 7 is coupled with the first contact piece 214. The second terminal 22 includes a second outer contact piece 221, a second connection piece 224, a second inner contact piece 222, and a second arc piece 223, which are connected in sequence and serve as a first end, the second inner contact piece 222 is connected with one end of the second connection piece 224 in a bending manner, the second outer contact piece 221 is connected with the other end of the second connection piece 224 in a bending manner, the second outer contact piece 221 is connected with the terminal 23, the second arc piece 223 is connected with one side edge of the second inner contact piece 222, the second arc piece 223, the second inner contact piece 222, and the second outer contact piece 221 are parallel to a plane in which the second connection piece 224 is located and perpendicular to the plane in which the second connection piece 224 is located, the second inner contact piece 222 is electrically connected with the stationary contact 220, and preferably, two stationary contacts are arranged on the second inner contact piece 222 and serve as the stationary contact 220.

Arc extinguishing chamber 60 includes the arc extinguishing chamber and sets up a plurality of arc extinguishing bars piece in the arc extinguishing chamber, and a plurality of arc extinguishing bars piece range upon range of interval sets up, and the one end that is close to moving contact 530 is equipped with the arc extinguishing breach, the one end that arc extinguishing chamber 60 is close to the moving contact is the inlet end, and the other end is the exhaust end, and the direction that a plurality of arc extinguishing bars piece range upon range of is arc extinguishing chamber 60's direction of height promptly. The first and second arc ignition pieces 213 and 223 are respectively disposed at both sides of the height of the arc extinguishing chamber 60 in the second direction. Preferably, the first outer connecting piece 211, the first arc striking piece 213, the arc extinguishing chamber 60, the second arc striking piece 223 and the second outer connecting piece 221 are arranged side by side at intervals in the second direction, have the same length extending direction and all extend along the first direction. The first arc striking piece 213 and the first inner connecting piece 212 are integrally arranged opposite to the first outer connecting piece 211, and the first connecting piece 214 is connected between the first inner connecting piece 212 and the first outer connecting piece 211 to enable the first terminal 21 to be in an approximately U-shaped structure; the second arc striking piece 223 and the second inner connecting piece 222 are integrally arranged opposite to the second outer connecting piece 221, the second connecting piece 224 is connected between the second inner connecting piece 222 and the second outer connecting piece 221 to enable the second terminal 22 to be of an approximate U-shaped structure, the first terminal 21 is integrally provided with the first arc striking piece 213, the second terminal 22 is integrally provided with the fixed contact 220 and the second arc striking piece 223, and the structure is simple and convenient to assemble. The first terminal 21 and the second terminal 22 are arranged on two sides of the arc extinguish chamber side by side at intervals, so that a loop from the wire inlet end to the wire outlet end of the switch forms a U-shaped layout, the whole loop is located at one end of the switch, and the loop is compact in structure.

Preferably, as shown in fig. 3-4, the electric operating mechanism 3 and the moving contact assembly of the present embodiment are mounted on the electric operating housing 8 to form a driving module and then mounted in the housing 1, which is highly reliable, efficient in assembly and convenient for automatic assembly. Specifically, the driving module includes an electrical operation housing 8, an electrical operation mechanism 3 and a moving contact assembly, the electrical operation mechanism 3 includes a motor 31, a gear set 30 and a transmission mechanism 5, the motor 31 drives the transmission mechanism 5 through the gear set 30, the transmission mechanism 5 is connected with the moving contact assembly, the moving contact assembly includes a contact support 53 and a moving contact 530 arranged on the contact support 53; the gear set 30 and the transmission mechanism 5 are arranged in the electric operation shell 8, the motor 31 and the contact support 53 are arranged on the electric operation shell 8, the contact support 53 is arranged in the electric operation shell 8 or partially extends out of the electric operation shell 8, one end of the movable contact 530 provided with a movable contact point extends out of the electric operation shell 8, and the motor 31 is arranged in the electric operation shell 8 or partially extends out of the electric operation shell 8 or is fixedly arranged outside the electric operation shell 8. Preferably, the electric operating mechanism 3 further comprises a control circuit 4, the control circuit 4 comprises a circuit board 40 and a microswitch, and the control circuit 4 is also arranged in the electric operating shell 8. In this embodiment, the motor 31 is disposed at one end of the electric operating housing 8, a motor fixing structure for fixing the motor 31 is disposed at one end of the electric operating housing 8, the contact support 53 is rotatably disposed at the other end of the electric operating housing 8, and the lever 51 is disposed between the motor 1 and the contact support 53. Referring to the second embodiment of the electric operating mechanism 3 shown in fig. 6-7, the lever 51 is disposed at one end of the electric operating housing 8, the contact support 53 is rotatably disposed at the other end of the electric operating housing 8, and the motor 1 is disposed between the lever 51 and the contact support 53.

Preferably, the electric operating housing 8 of the present embodiment includes an electric operating first housing 82 and an electric operating second housing 83, the electric operating first housing 82 and the electric operating second housing 83 are fastened to form a module accommodating chamber, a partition 81 is disposed in the electric operating housing 8 to divide the module accommodating chamber into an electric operating first space and an electric operating second space, an electric operating first space is formed between the partition 81 and the electric operating first housing 82, an electric operating second space is formed between the partition 81 and the electric operating second housing 83, a gear set 30 is disposed in the electric operating first space, a transmission mechanism 5, a moving contact assembly and a control circuit 4 are disposed in the electric operating second space, a communication hole is disposed between the electric operating first space and the electric operating second space, and the output gear 33 of the gear set 30 is disposed in the electric operating first space through the communication hole drive lever 51, or disposed in the electric operating second space through the communication hole drive fit with the transmission gear 32. Specifically, a plurality of transmission gears 32 and output gears 33 are installed in an electrically operated first space of one side of the partition 81, and the lever 51, the link 52, the contact support 53 and the movable contact 530 are installed in an electrically operated second space of the other side of the partition 81. The partition plate 81, the first electrically operated housing 82 and the second electrically operated housing 83 are provided with assembling structures at corresponding positions, and the assembling structures are assembling holes and the like which are fastened or fixed by rivets or screws.

Embodiment two as shown in fig. 11-12

This embodiment is different from the first embodiment in that the connection terminal 23 is not provided inside the switch, and one ends of the first terminal 21 and the second terminal 22 for connection are extended outside the switch for connection. Preferably, the part that first wiring end 21 and second wiring end 22 stretch out the shell 1 is the wiring board structure, carries out plug and draw with outside bus bar clamp and is connected, and the user can set up corresponding binding post 23 at the part that first wiring end 21 and second wiring end 22 stretch out the switch outside as required in addition with the different mode of connection of matching or do not set up binding post 23 direct wiring all can.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship that is usually placed when used, and are only for convenience of description, but do not indicate that the device or element that is referred to must have a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish one description from another, and are not to be construed as indicating relative importance.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model discloses to the ordinary skilled person in technical field's the prerequisite that does not deviate from the utility model discloses under the design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. A drive structure of a switch comprises an electric operation mechanism and a moving contact component, wherein the electric operation mechanism comprises a motor (31), a gear set (30) and a transmission mechanism (5), the motor (31) drives the transmission mechanism (5) through the gear set (30), the transmission mechanism (5) is connected with the moving contact component, the moving contact component comprises a contact support (53) and a moving contact (530) arranged on the contact support (53), and the drive structure is characterized in that: the gear set (30) comprises an output gear (33), the transmission mechanism (5) comprises a lever (51) and a connecting rod (52), the lever (51) and the contact support (53) are rotatably arranged, the connecting rod (52) is connected between the lever (51) and the contact support (53), and the lever (51) is in driving fit with the output gear (33).

2. The driving structure of the switch according to claim 1, wherein: the moving contact (530) comprises two moving contacts (531), and the two moving contacts (531) are provided with moving contacts and are arranged on the contact support (53) side by side.

3. The driving structure of the switch according to claim 1, wherein: lever (51) and output gear (33) coaxial arrangement, lever (51) are equipped with at least one restriction arch (511) with output gear (33) complex, output gear (33) are equipped with lever (51) complex at least one drive arch (330), and output gear (33) rotate and make drive arch (330) and restrict and drive lever (51) rotation when protruding (511) are spacing.

4. The driving structure of the switch according to claim 1, wherein: the output gear (33) and the lever (51) are arranged in parallel at intervals, a first gear is radially arranged on the output gear (33), a lever gear is radially arranged on the lever (51), the first gear and the lever gear are in meshing transmission, and the first gear of the output gear (33) and/or the lever gear of the lever (51) are sector gears.

5. The driving structure of the switch according to claim 1, wherein: the lever (51) is provided with a first connecting hole (512) for connecting the connecting rod (52), the contact support (53) is also provided with a second connecting hole (533) for connecting the connecting rod (52), the connecting rod (52) is a U-shaped rod, one end of the connecting rod is inserted into the first connecting hole (512) of the lever (51), and the other end of the connecting rod is inserted into the second connecting hole (533) of the contact support (53).

6. The driving structure of the switch according to claim 1, wherein: the output shaft of the motor (31) is parallel to the axial direction of the lever (51), a transmission gear on the output shaft of the motor (31) is in direct driving fit with the output gear (33), the other end of the lever (51) far away from the output gear (33) is connected with one end of a connecting rod (52), and the other end of the connecting rod (52) is connected with a contact support (53).

7. The driving structure of the switch according to claim 2, wherein: the contact support (53) is radially provided with a contact cavity (534) penetrating through the contact support (53), two ends of the contact cavity (534) are respectively provided with a first opening (5341) and a second opening (5343), a cavity side wall protrusion (5342) is arranged in the contact cavity (534), the cavity side wall protrusion (5342) is arranged close to the first opening (5341), the middle part of the movable contact piece (531) is abutted against the cavity side wall protrusion (5342) under the action of a contact spring (535), so that the two movable contact pieces (531) can respectively rotate based on the cavity side wall protrusion (5342) as a fulcrum.

8. The driving structure of the switch according to claim 3, wherein: the lever (51) is provided with a first connecting hole (512) for connecting a connecting rod (52) and a first bulge (510), and when the lever (51) rotates to a position where the drive switch is closed and/or disconnected, the first bulge (510) triggers a microswitch K to switch states; the driving protrusion (330) is convexly arranged on the end face of one end, close to the lever (51), of the output gear (33), and a first tooth (331) is arranged on the radial side wall of the output gear (33).

9. The driving structure of the switch according to claim 1, wherein: the electric operating mechanism (3) further comprises a control circuit (4), the control circuit (4) comprises at least one microswitch K, and when the output gear (33) or the lever (51) or the contact support (53) rotates to a position for driving the switch to be closed and/or the switch to be disconnected, the microswitch K is triggered to switch the state.

10. The driving structure of the switch according to claim 1, wherein: the gear set (30) comprises an output gear (33) and a plurality of transmission gears (32), and the motor (31) drives the output gear (33) through the transmission gears (32); the transmission gears (32) and the output gears (33) are arranged on one side of the partition plate (81), and the lever (51), the connecting rod (52), the contact support (53) and the movable contact (530) are arranged on the other side of the partition plate (81).

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