CN222562474U - Switching device - Google Patents

Abstract

The present disclosure relates to a switching device including a stationary contact part including a stationary contact, a movable contact part including a movable contact configured to have a critical state, a first free state, and a second free state, the movable contact moving toward a direction approaching the stationary contact to be in contact with the stationary contact when switching from the critical state to the first free state, the movable contact moving away from the stationary contact when switching from the critical state to the second free state, and an operating portion for driving the movable contact part to deviate from the critical state to move toward one of the first free state and the second free state, and an electric drive assembly configured to drive the movable contact part to deviate from the critical state to move toward the other of the first free state and the second free state in an energized state. Thus, the energy consumption of the switching device is reduced, and the service life of the switching device is prolonged.

Description

Switching device

Technical Field

The present disclosure relates to the field of electrical equipment, and in particular, to a switching device.

Background

For example, switching devices such as electromagnetic switches and relays operate by generating magnetic force by electricity, thereby realizing on-off of a control circuit. However, the switching device of the related art has problems of high power consumption and short service life.

Disclosure of utility model

To overcome the problems in the related art, the present disclosure provides a switching device.

The present disclosure provides a switching device including a stationary contact part including a stationary contact, a movable contact part including a movable contact, the movable contact part being configured to have a critical state, a first free state, and a second free state, the movable contact moving toward the stationary contact to be in contact with the stationary contact when switching from the critical state to the first free state, the movable contact moving away from the stationary contact when switching from the critical state to the second free state, the movable contact being kept separated from the stationary contact in the second free state, an operation portion for driving the movable contact part to deviate from the critical state to move toward one of the first free state and the second free state, and an electric drive assembly configured to drive the movable contact part to deviate from the critical state to move toward the other of the first free state and the second free state when switching from the critical state to the second free state.

In some embodiments of the disclosure, the movable contact part further includes a movable contact, the movable contact is disposed on a first end of the movable contact, the movable contact includes the critical state, the first free state and the second free state, the operating portion is connected with the movable contact, so as to drive the movable contact to bend in a first direction to make the movable contact deviate from the critical state to move toward one of the first free state and the second free state, and the electric driving assembly can abut against the movable contact to press the movable contact to bend in a second direction to make the movable contact deviate from the critical state to move toward the other of the first free state and the second free state, and the second direction is opposite to the first direction.

In some embodiments of the present disclosure, a deformation region is disposed on the movable contact, and in the critical state, the deformation region is configured to bend a first end of the movable contact toward the first direction or the second direction.

In some embodiments of the present disclosure, the movable contact includes a first surface and a second surface opposite to each other, and the movable contact in the deformation region is deformed from being concave from the first surface to being concave from the second surface when switching from the critical state to the first free state, and the movable contact in the deformation region is deformed from being concave from the second surface to being concave from the first surface to being concave from the second surface when switching from the critical state to the second free state.

In some embodiments of the present disclosure, the switching device further includes a housing, the stationary contact member, the movable contact member, the operating portion, and the electric drive assembly being disposed within the housing.

In some embodiments of the disclosure, a sliding groove is provided in the housing, the operation portion includes a sliding block slidably connected to the sliding groove, the sliding block is connected to the movable contact, a push rod, a first end of the push rod is connected to the sliding block, a second end of the push rod extends out of the housing, the push rod is used for pushing the sliding block to move from a first position to a second position so as to drive the movable contact to deviate from the critical state to move to one of the first free state and the second free state, and when the movable contact moves from the critical state to the other of the first free state and the second free state, the movable contact drives the sliding block to move from the second position to the first position so as to reset the operation portion.

In some embodiments of the present disclosure, a first slit is provided on the slider, and the first end of the movable contact is disposed in the first slit.

In some embodiments of the disclosure, the electric drive assembly includes a touch assembly including a third position in which the touch assembly is in abutment with the movable contact and a fourth position in which the touch assembly is separated from the movable contact, and an electromagnetic unit for providing an electromagnetic force to the touch assembly in the energized state, the electromagnetic force being used to drive the touch assembly to move from the fourth position to the third position.

In some embodiments of the disclosure, an abutting region is further arranged on the movable contact piece, the abutting region is located between the first end and the deformation region of the movable contact piece, the electromagnetic unit comprises a supporting portion and a coil wound outside the supporting portion, a terminal of the coil extends out of the shell, the supporting portion is fixed in the shell, a through hole is formed in the supporting portion along the axial direction of the supporting portion, the pressing assembly comprises a floating piece, the floating piece comprises a floating column and a floating plate which are connected, the floating column is arranged in the through hole and can move along the axial direction of the through hole, the orthographic projection of the through hole on the floating plate is located in the outer edge of the floating plate, one end of the pressing piece is sleeved on the floating column and located between the supporting portion and the floating plate, the other end of the pressing piece is used for abutting against the abutting region, in the third position, the floating plate abuts against the pressing piece so that the pressing piece abuts against the floating plate and is separated from the floating plate in the fourth position, and the pressing piece is far away from the abutting piece.

In some embodiments of the disclosure, the contact element includes a first contact element and a second contact element connected by a rotating shaft, the first contact element is sleeved on the floating post, the second contact element is used for being abutted to the abutting area, and the rotating shaft is rotationally connected to the housing, so that the first contact element and the second contact element can rotate around the rotating shaft.

In some embodiments of the present disclosure, the electromagnetic unit further includes an elastic member disposed in the through hole, the elastic member for providing an elastic force to the floating member to move the floating plate in a direction away from the supporting portion.

In some embodiments of the disclosure, the housing includes a first side plate and a second side plate opposite to each other, one end of the elastic member is connected to the first side plate, the other end of the elastic member is connected to the floating column, and in the fourth position, the floating plate abuts against the second side plate.

In some embodiments of the present disclosure, the stationary contact part further includes a first fixing plate portion fixed to an inner wall of the housing, the stationary contact is disposed at the first fixing plate portion, and a terminal of the first fixing plate portion protrudes to an outside of the housing, the movable contact part further includes a second fixing plate portion fixed to the inner wall of the housing, a second end of the movable contact is connected to the second fixing plate portion, and a terminal of the second fixing plate portion protrudes to the outside of the housing.

In some embodiments of the disclosure, the switch device further includes a limiting structure, the limiting structure is disposed in the housing, a second slit is disposed on the limiting structure, and the deformation area of the movable contact is disposed in the second slit.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

The switch device provided by the disclosure has the critical state, the first free state and the second free state, the operating part can drive the movable contact part to deviate from the critical state to move to one of the first free state and the second free state, the electric driving assembly is configured to drive the movable contact part to deviate from the critical state to move to the other of the first free state and the second free state under the power-on state, when the critical state is switched to the first free state, the movable contact moves to the direction close to the fixed contact to be contacted with the fixed contact, when the critical state is switched to the second free state, the movable contact moves to the direction far from the fixed contact, and when the second free state is switched to, the movable contact is kept separated from the fixed contact. Therefore, the electric drive assembly is only required to be electrified when switching between a state that the movable contact is contacted with the fixed contact and a state that the movable contact is separated from the fixed contact, and the state that the movable contact is contacted with the fixed contact or the state that the movable contact is separated from the fixed contact is maintained without electrifying, so that the electrifying time of the switching device is reduced, the energy consumption of the switching device can be effectively reduced, and the service life of the switching device can be prolonged.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a switching device according to an exemplary embodiment;

Fig. 2 is a schematic structural view of a switching device according to another exemplary embodiment;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

Fig. 4 is a schematic structural view of the switching device when the movable contact is in the second free state according to an exemplary embodiment;

Fig. 5 is a schematic structural view of the switching device according to an exemplary embodiment when the movable contact is driven by the operation portion to be in a critical state;

fig. 6 is a schematic structural view of the switching device when the movable contact is in the first free state according to an exemplary embodiment;

Fig. 7 is a schematic structural diagram of a switching device according to an exemplary embodiment when the movable contact is driven by the electric driving assembly to be in a critical state.

In the figure:

1-switching device, 11-stationary contact part, 111-stationary contact, 112-first fixed plate part, 12-movable contact part, 121-movable contact, 122-movable contact, 1221-deformation region, 1222-first surface, 1223-second surface, 123-second fixed plate part, 13-operating part, 131-push rod, 132-slide, 133-first slit, 14-electric drive assembly, 141-floating piece, 1411-floating column, 1412-floating plate, 142-supporting part, 1421-through hole, 143-coil, 144-contact piece, 1441-rotating shaft, 1442-first contact plate, 1443-second contact plate, 145-elastic piece, 15-housing, 151-first side plate, 152-second side plate, 153-slide groove, 154-limit structure, 1541-second slit.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

For example, switching devices such as electromagnetic switches and relays operate by generating magnetic force by electricity, thereby realizing on-off of a control circuit. However, the switching device of the related art has problems of high power consumption and short service life.

Illustratively, an electromagnetic switch is described as an example, where the electromagnetic switch in the related art includes a movable contact, a stationary contact, a movable iron core, and an electromagnetic coil, and when the electromagnetic coil is energized, a magnetic field is generated, and the movable iron core is attracted by the magnetic field to move the movable iron core, so as to drive the movable contact to contact with the stationary contact, thereby implementing conduction of a circuit in which the electromagnetic switch is located. When the power is disconnected, the magnetic force disappears, and the movable iron core is reset, so that the movable contact is separated from the fixed contact, and the circuit where the electromagnetic switch is disconnected. If the on state of the circuit is to be maintained, the electromagnetic coil needs to be kept continuously energized, so that the movable contact and the stationary contact are kept in a contact state continuously.

The relay in the related art is mainly composed of a movable contact, a stationary contact, an electromagnetic coil and an iron sheet, and the relay is generally classified into a normally open relay, a normally closed relay and a normally open and normally closed relay. For a normally open relay, the working principle is that a magnetic field is generated after the electromagnetic coil is electrified, and the magnetic field attracts the iron sheet to enable the iron sheet to move, so that the movable contact and the static contact are driven to be contacted, and the conduction of a circuit where the relay is located is realized. When the power is disconnected, the magnetic force disappears, and the iron sheet resets, so that the movable contact is separated from the static contact, and the circuit where the relay is located is disconnected. If the on state of the circuit is to be maintained, the electromagnetic coil needs to be kept continuously energized, so that the movable contact and the stationary contact are kept in a contact state continuously.

For normally closed relay, the working principle is that when the electromagnetic coil is electrified, a magnetic field is generated, and the magnetic field attracts the iron sheet to enable the iron sheet to move, so that the movable contact and the static contact are driven to be separated, and the circuit of the relay is disconnected. When the power supply is disconnected, the magnetic force disappears, and the iron sheet resets, so that the movable contact contacts with the static contact, and the conduction of the circuit where the relay is located is realized. If the circuit is required to be maintained in an off state, the electromagnetic coil needs to be kept continuously energized, so that the movable contact and the stationary contact are kept in a separated state continuously.

For normally open normally closed relay, it includes first stationary contact and the second stationary contact of relative setting, sets up a movable contact between first stationary contact and second stationary contact, and its theory of operation is can produce the magnetic field after solenoid circular telegram, attracts the iron sheet through the magnetic field so that the iron sheet removes to drive movable contact and first stationary contact and contact, so that movable contact and second stationary contact phase separation, thereby through switching on the circuit that first stationary contact is located, realize the disconnection to the circuit that second stationary contact is located. When the power is disconnected, the magnetic force disappears, the iron sheet resets, so that the movable contact is contacted with the second stationary contact, and the movable contact is separated from the first stationary contact, thereby realizing the disconnection of the circuit where the first stationary contact is located by conducting the circuit where the second stationary contact is located. If the state of the second stationary contact in which the circuit is disconnected needs to be maintained, continuous energization of the electromagnetic coil needs to be maintained, so that the movable contact is contacted with the first stationary contact through the movable contact, and the movable contact is separated from the second stationary contact.

As can be seen from the foregoing, in the switching device in the related art, when the on/off state of the control circuit is controlled, there is always a state that the circuit needs to be continuously energized to maintain the state under the action of magnetic force, so that the power consumption of the switching device is high, and the service life of the switching device is shortened.

In order to solve the above technical problem, the present disclosure provides a switching device, in which a movable contact component has a critical state, a first free state and a second free state, an operation portion can drive the movable contact component to deviate from the critical state to move to one of the first free state and the second free state, and an electric driving component is configured to drive the movable contact component to deviate from the critical state to move to the other of the first free state and the second free state in an energized state, when the critical state is switched to the first free state, the movable contact moves to a direction approaching to the stationary contact to contact with the stationary contact, when the critical state is switched to the second free state, the movable contact moves to a direction separating from the stationary contact, and in the second free state, the movable contact is kept separated from the stationary contact. Therefore, the electric drive assembly is only required to be electrified when switching between a state that the movable contact is contacted with the fixed contact and a state that the movable contact is separated from the fixed contact, and the state that the movable contact is contacted with the fixed contact or the state that the movable contact is separated from the fixed contact is maintained without electrifying, so that the electrifying time of the switching device is reduced, the energy consumption of the switching device can be effectively reduced, and the service life of the switching device can be prolonged.

An exemplary embodiment of the present disclosure provides a switching device, which may be, for example, an electromagnetic switch, a relay, a contactor, or the like, that is operated by an electromagnetic force. As shown in fig. 1, the switching device 1 includes a stationary contact member 11, a movable contact member 12, an operating portion 13, and an electric drive assembly 14.

The stationary contact part 11 includes a stationary contact 111, and the movable contact part 12 includes a movable contact 121. The stationary contact part 11 may be a single structural member including the stationary contact 111 or a combination of a plurality of structural members, and the movable contact part 12 may be a single structural member including the movable contact 121 or a combination of a plurality of structural members.

Referring to fig. 4, 5 and 6, the movable contact member 12 is configured to have a critical state, a first free state and a second free state. When switching from the critical state to the first free state, the movable contact 121 moves in a direction approaching the stationary contact 111 to contact the stationary contact 111, and when the movable contact 121 contacts the stationary contact 111, conduction of the circuit in which the switching device 1 is located is achieved. When switching from the critical state to the second free state, the movable contact 121 moves in a direction away from the stationary contact 111, so that the movable contact 121 is separated from the stationary contact 111, and the circuit in which the switching device 1 is located is disconnected. And in the second free state, the movable contact 121 remains separated from the stationary contact 111.

Referring to fig. 5, the operation portion 13 is configured to drive the movable contact member 12 to deviate from the critical state to move to one of the first free state and the second free state, and for example, the operation portion 13 may be manually operated by a user, for example, pushing, pressing, pulling out, or the like, or the operation portion 13 may be controlled by linkage with a mating device, for example, the switch device 1 is applied to an intelligent door lock, and further, operations such as pushing, rotating, or the like, of the operation portion 13 may be implemented by linkage with a key, a door handle, or the like, which are provided on the intelligent door lock. For example, when the switching device 1 is applied to an intelligent door lock, for example, locking and unlocking of the intelligent door lock can be automatically controlled by the switching device 1, and locking and unlocking of the intelligent door lock can be also achieved by manually operating the operating portion 13, at this time, the situation that the switching device 1 cannot automatically control unlocking or locking of the intelligent door lock due to power failure, insufficient electric quantity and other reasons cannot be avoided, so that the use experience of a user can be effectively improved.

The operation portion 13 may be configured to drive the movable contact member 12 to move to one of the first free state and the second free state from the critical state without requiring power, and may be configured to perform only a physical operation.

The operation part 13 may drive the movable contact member 12 to deviate from the critical state to move to either the first free state or the second free state, for example, only the operation part 13 may drive the movable contact member 12 to move from the first free state or the second free state to the critical state, the movable contact member 12 moving from the first free state to the critical state may deviate from the critical state by itself and move to the second free state, the movable contact member 12 moving from the second free state to the critical state may deviate from the critical state by itself and move to the first free state, or the operation part 13 may drive the movable contact member 12 to move from the first free state or the second free state to the critical state and then move to a position where the movable contact member 12 deviates from the critical state, the movable contact member 12 moving from the first free state to the position may enter the second free state or move to the second free state, and the movable contact member 12 moving from the second free state to the position may enter the first free state or move to the first free state.

Referring to fig. 7, the electrical drive assembly 14 is configured to move the movable contact assembly 12 away from the critical state in the energized state to move toward both the first free state and the second free state. For example, the movable contact member 12 may be moved to the first free state by being moved away from the critical state by the operating portion 13, and the movable contact member 12 may be moved to the second free state by being moved away from the critical state by the electric driving unit 14 in the energized state, or the movable contact member 12 may be moved to the second free state by being moved away from the critical state by the operating portion 13, and the movable contact member 12 may be moved to the first free state by being moved away from the critical state by the electric driving unit 14 in the energized state, which is not particularly limited herein.

In addition, the electrically driven component 14 is configured to drive the movable contact component 12 to deviate from the critical state to move to both the first free state and the second free state in the energized state, for example, it may be that the electrically driven component 14 is only required to drive the movable contact component 12 to move from the first free state or the second free state to the critical state in the energized state, at this time, the movable contact component 12 moving from the first free state to the critical state deviates from the critical state and moves to the second free state, the movable contact component 12 moving from the second free state to the critical state deviates from the critical state and moves to the first free state, or the electrically driven component 14 in the energized state moves from the first free state or the second free state to a position where the movable contact component 12 deviates from the critical state, at this time, the movable contact component 12 moving from the first free state to the position enters the second free state or moves to the second free state, and the movable contact component 12 moving from the second free state to the position enters the first free state or moves to the first free state.

In this embodiment, the operation portion 13 is matched with the electric driving assembly 14, and only needs to be electrified when the electric driving assembly 14 switches between a state that the movable contact 121 is contacted with the fixed contact 111 and a state that the movable contact 121 is separated from the fixed contact 111, and the state that the movable contact 121 is contacted with the fixed contact 111 or the state that the movable contact 121 is separated from the fixed contact 111 is maintained without electrifying, so that the electrifying time of the switching device 1 is reduced, the energy consumption of the switching device 1 is effectively reduced, and the service life of the switching device 1 is prolonged. Meanwhile, since the switching device 1 of the present embodiment does not depend on continuous input of energy when the state that the movable contact 121 is in contact with the stationary contact 11 or the state that the movable contact 121 is separated from the stationary contact 111 is maintained, not only can stability of the control circuit of the switching device 1 maintaining the current state be improved, thereby effectively improving reliability of the switching device 1, but also effectively reducing cost.

In an embodiment, referring to fig. 1, the movable contact component 12 further includes a movable contact 122, and the movable contact 122 may be, for example, a resilient spring. The movable contact 121 is disposed on the first end of the movable contact 122, and referring to fig. 4, 5 and 6, the movable contact 122 includes a critical state, a first free state and a second free state. Referring to fig. 5, the operation unit 13 is connected to the movable contact 122, and the connection between the operation unit 13 and the movable contact 122 is achieved by welding, bonding, or the like. The movable contact 122 is driven to bend in the first direction by the operation part 13, so that the movable contact 122 deviates from the critical state to move to one of the first free state and the second free state, and the movable contact 121 on the movable contact 122 is driven to be separated from or contacted with the stationary contact 111. By such design, the mode that the operating part 13 drives the movable contact part 12 to move is simple, so that the switch device 1 has a simple structure and is convenient to process and assemble.

Referring to fig. 7, the electric driving assembly 14 can be abutted against the movable contact 122 in the energized state, so as to press the movable contact 122 to bend toward the second direction, so that the movable contact 122 deviates from the critical state to move toward the other of the first free state and the second free state, and thereby the movable contact 121 on the movable contact 122 is driven to contact with or separate from the stationary contact 111. The second direction is opposite to the first direction, which may be, for example, clockwise, and the second direction may be, for example, counter-clockwise. With such an arrangement, the manner in which the electric drive assembly 14 moves the movable contact member 12 is simple, so that the switching device 1 can also be made simple in structure, and easy to process and assemble.

In an embodiment, referring to fig. 5, a deformation area 1221 is disposed on the movable contact 122, and in a critical state, the deformation area 1221 is used to bend the first end of the movable contact 122 in the first direction or the second direction. For example, when the first end of the movable contact 122 is bent in a first direction to move from a first free state to a critical state, the movable contact 122 is continuously bent in the first direction to move to a second free state under the action of the deformation area 1221 when moving to the critical state, or when the first end of the movable contact 122 is bent in the second direction to move from the first free state to the critical state, the movable contact 122 is continuously bent in the second direction to move to the second free state under the action of the deformation area 1221 when moving to the critical state.

By arranging the deformation area 1221 on the movable contact 122, the movable contact 122 can deviate from the critical state by itself to realize the contact or separation of the movable contact 121 and the stationary contact 111, and the design not only can simplify the structure of the switch device 1, but also reduces the movement range of the operation part 13 and the electric driving assembly 14, thereby being beneficial to reducing the volume of the switch device 1 and being convenient to realize the miniaturization design of the switch device 1.

In an embodiment, referring to fig. 4, 5 and 6, the movable contact 122 includes a first surface 1222 and a second surface 1223 opposite to each other, and when the critical state is switched to the first free state, that is, when the movable contact 122 moving from the second free state to the critical state moves from the critical state to the first free state, the movable contact 122 in the deformation area 1221 is deformed from being concaved from the first surface 1222 to the second surface 1223 to being concaved from the second surface 1223 to the first surface 1222, so that the movable contact 122 can deviate from the critical state by itself and move to the first free state. Referring to fig. 4, 6 and 7, when the movable contact 122 is switched from the critical state to the second free state, that is, when the movable contact 122 moving from the first free state to the critical state moves from the critical state to the second free state, the movable contact 122 located in the deformation area 1221 is deformed from being recessed from the second surface 1223 to the first surface 1222 to being recessed from the first surface 1222 to the second surface 1223, so that the movable contact 122 can be automatically deviated from the critical state and moves to the second free state. With such arrangement, the movable contact 122 has a simple structure and is convenient to process.

In an embodiment, referring to fig. 1, the switching device 1 further includes a housing 15, and the stationary contact member 11, the movable contact member 12, the operating portion 13, and the electric drive assembly 14 are disposed in the housing 15. By providing the housing 15, each structural member can be protected, and thus the reliability and safety of the switching device 1 can be effectively improved.

In an embodiment, referring to fig. 1, a sliding groove 153 is disposed in the housing 15, and the sliding groove 153 may be disposed in the housing 15 as a separate structural member, or a groove may be disposed on an inner wall of the housing 15 or two guide plates may be disposed opposite to each other to form the sliding groove 153.

The operation portion 13 includes a slider 132 and a pushrod 131. The sliding block 132 is slidably connected to the sliding groove 153, and the sliding block 132 is connected to the movable contact 122. For example, the slider 132 may be connected to the movable contact 122 by welding, bonding, clamping, or the like. The first end of the push rod 131 is connected to the slider 132, and the second end of the push rod 131 protrudes outside the housing 15. In this way, the user or an external mating device can control the operation portion 13 conveniently.

Referring to fig. 4, 5 and 6, the push rod 131 is configured to push the slider 132 to move from the first position to the second position, so as to drive the movable contact 122 to deviate from the critical state to move to one of the first free state and the second free state. When the movable contact 122 moves from the critical state to the first free state and the second free state, the movable contact 122 drives the slider 132 to move from the second position to the first position, so as to reset the operation portion 13.

For example, in conjunction with fig. 4, 5 and 6, the moving contact 122 is in the second free state as the initial state, and the position of the slider 132 when the moving contact 122 is in the second free state is the first position. Pushing the push rod 131 into the housing 15, the push rod 131 pushes the slider 132 to move from the first position to the second position, and drives the movable contact 122 to move from the second free state to the critical state. Then, the movable contact 122 moves from the critical state to the first free state, and in this process, the push rod 131 is driven to extend into the housing 15 continuously. The position where the movable contact 121 contacts the stationary contact 111 is the second position where the slider 132 is located. Referring to fig. 4, 6 and 7, the electric driving assembly 14 drives the movable contact 122 to move from the first free state to the critical state under the power-on state, and then the movable contact 122 automatically deviates from the critical state to move toward the second free state, in this process, the movable contact 122 drives the slider 132 to move from the second position to the first position, the push rod 131 gradually extends out of the housing 15, and when the movable contact 122 is in the second free state, the operating portion 13 is reset.

By adopting the design, the structure is more compact, the miniaturization design of the switch device 1 is facilitated, the movable contact 122 drives the operation part 13 to reset, a mode of manually operating the operation part 13 to reset is replaced, and the use convenience of the switch device 1 is effectively improved.

In an embodiment, referring to fig. 1, a first slit 133 is disposed on the slider 132, and a first end of the movable contact 122 is disposed at the first slit 133, so as to achieve connection between the slider 132 and the movable contact 122. By adopting the arrangement form, the switch device 1 has simple structure and is convenient to process and assemble.

In one embodiment, and with reference to fig. 4, 6 and 7, the electric drive assembly 14 includes a touch assembly and an electromagnetic unit. The touch assembly includes a third position and a fourth position. In the third position, the contact element is abutted against the movable contact 122. In the fourth position, the contact element is separated from the movable contact 122. The electromagnetic unit can provide electromagnetic force for the touch-pressing assembly in an electrified state, and the electromagnetic force is used for driving the touch-pressing assembly to move from the fourth position to the third position. When the power supply is disconnected, the electromagnetic force disappears, and the touch-pressing component moves from the third position to the fourth position. For example, the moving contact 122 is in the first free state as an initial state, and the electromagnetic unit drives the pressing assembly to move from the fourth position to the third position in the energized state to press the moving contact 122 from the first free state to the critical state. Then, the movable contact 122 moves from the critical state to the second free state, and at the same time, the power is disconnected, the electromagnetic force disappears, and the touch assembly moves from the third position to the fourth position. It should be noted that, in the fourth position, the pressing component is separated from the movable contact 122, or may be separated from the movable contact 122 when the pressing component moves to the fourth position, or may be separated from the pressing component after the movable contact 122 moves to the second free state until the power is disconnected to move the pressing component from the third position to the fourth position, and the pressing component is always separated from the movable contact 122. So designed, the electric drive assembly 14 is simple in structure and convenient to process.

In an embodiment, referring to fig. 2, fig. 4 and fig. 7, an abutment area is further disposed on the movable contact 122, and the abutment area is used for abutting against the pressing component. The abutment region is located between the first end of the movable contact 122 and the deformation region 1221. The electromagnetic unit includes a supporting portion 142 and a coil 143 wound outside the supporting portion 142, and a terminal of the coil 143 protrudes outside the housing 15 to facilitate connection with a power supply line. The support portion 142 is fixed in the housing 15, and the support portion 142 is provided with a through hole 1421 in an axial direction of the support portion 142.

The touchdown assembly includes a float member 141 and a touchdown member 144. The floating member 141 includes a floating column 1411 and a floating plate 1412 connected, and the floating plate 1412 illustratively includes two sides opposite each other, with an end of the floating column 1411 connected to one of the sides of the floating plate 1412. The floating plate 1412 may be circular, square, or the like, for example. The floating column 1411 is provided to the through hole 1421 and is movable in an axial direction of the through hole 1421, and the floating plate 1412 is located outside the through hole 1421. The orthographic projection of the through hole 1421 on the floating plate 1412 is located within the outer edge of the floating plate 1412, one end of the contact element 144 is sleeved on the floating column 1411 and located between the supporting portion 142 and the floating plate 1412, and the other end of the contact element 144 is used for abutting against the abutting area.

In the third position, the floating plate 1412 presses the contact 144 so that the contact 144 is in contact with the contact area, and in the fourth position, the floating plate 1412 is away from the contact 144 so that the contact 144 is separated from the movable contact 122. For example, referring to fig. 4, 6 and 7, the movable contact 122 is in the first free state as an initial state, the coil 143 generates electromagnetic force in the energized state, and attracts the floating post 1411 to move to drive the floating plate 1412 to move toward the supporting portion 142, the floating plate 1412 gradually presses the pressing member 144 to move the pressing member 144 from the fourth position to the third position until the pressing member 144 moves to the third position, and the pressing member 144 abuts against the abutting region. When the power is turned off, the electromagnetic force is removed, and the floating member 141 gradually moves to reset, that is, the floating plate 1412 moves in a direction away from the supporting portion 142, so that the pressing member 144 moves from the third position to the fourth position to be separated from the movable contact 122 due to the removal of the pressure acting on the pressing member 144.

With such an arrangement, on the one hand, the electric drive assembly 14 is simple in construction and easy to machine. On the other hand, the floating member 141 and the supporting portion 142 can play a limiting role on the contact member 144, so that the normal driving of the movable contact 122 is prevented from being influenced by the displacement or falling of the contact member 144 due to the action of external force, thereby effectively improving the timeliness of the contact or separation of the movable contact 122 and the static contact, and further improving the reliability of the switch device 1.

In one embodiment, referring to fig. 4, 6 and 7, the contact 144 includes a first contact plate 1442 and a second contact plate 1443 connected by a rotating shaft 1441. The first touch plate 1442 is sleeved on the floating column 1411, the second touch plate 1443 is used for abutting against the abutting area, and the rotating shaft 1441 is rotatably connected to the housing 15, so that the first touch plate 1442 and the second touch plate 1443 can rotate around the rotating shaft 1441. Illustratively, the moving contact 122 is in the first free state as the initial state, and the coil 143 generates electromagnetic force in the energized state to attract the floating column 1411 to move so as to drive the floating plate 1412 to move toward the supporting portion 142. In this process, the floating plate 1412 gradually applies pressure to the first pressing plate 1442, and the first pressing plate 1442 and the second pressing plate 1443 rotate from the fourth position to the third position under the action of the rotating shaft 1441 until the floating plate 1412 presses the pressing member 144 to make the first pressing plate 1442 abut against the end surface of the supporting portion 142, at this time, the second pressing plate 1443 rotates to the third position. When the power is turned off, the electromagnetic force disappears, and the floating member 141 gradually moves to reset, that is, the floating plate 1412 moves in a direction away from the supporting portion 142, and the second contact plate 1443 rotates from the third position to the fourth position to be separated from the movable contact plate 122 due to the force of gravity due to the disappearance of the pressure acting on the first contact plate 1442, and in this process, the first contact plate 1442 rotates in synchronization with the second contact plate 1443.

By the design, the structure of the touch piece 144 is simple, the electromagnetic unit is convenient for driving the touch assembly, so that the efficiency of driving the movable contact piece 122 to move is effectively improved, and the reliability of the switch device 1 is further improved.

In an embodiment, referring to fig. 3, the electromagnetic unit further includes an elastic member 145, where the elastic member 145 may be, for example, a spring, a torsion spring, or the like. The elastic member 145 is disposed in the through hole 1421, and the elastic member 145 is configured to provide an elastic force to the floating member 141 to move the floating plate 1412 in a direction away from the supporting portion 142. With such an arrangement, on the one hand, when the electromagnetic force of the power off is removed, the floating plate 1412 moves in a direction away from the supporting portion 142 by the elastic member 145, thereby moving the contact piece 144 to the fourth position. On the other hand, when the power is disconnected, the elastic member 145 can also support the floating member 141, so that the malfunction of the touching member 144 caused by the displacement of the floating member 141 is effectively avoided, and the accuracy of the switch device 1 in circuit control is further improved.

In one embodiment, referring to fig. 3, the housing 15 includes a first side plate 151 and a second side plate 152 opposite to each other, one end of the elastic member 145 is connected to the first side plate 151, the other end of the elastic member 145 is connected to the floating column 1411, and in the fourth position, the floating plate 1412 abuts against the second side plate 152. In this way, the second side plate 152 can limit the floating plate 1412, so as to prevent the floating member 141 from falling out of the through hole 1421 on the supporting portion 142 under the action of the elastic member 145, thereby further improving the reliability of the switching device 1.

The moving contact 122 is in the second free state as an initial state.

Referring to fig. 4, when the movable contact 122 is in the second free state, the circuit is in the open state, and the slider 132 of the operating portion 13 is located at the first position.

Referring to fig. 4 and fig. 5, when the circuit needs to be turned on, the push rod 131 is pushed into the housing 15, and the push rod 131 pushes the slider 132 to move from the first position to the second position, so as to drive the first end of the movable contact 122 to bend in the first direction, so that the movable contact 122 moves from the second free state to the critical state. Referring to fig. 5 and fig. 6, when in the critical state, the movable contact 122 in the deformation area 1221 is concavely deformed from the first surface 1222 to the second surface 1223, and is concavely deformed from the second surface 1223 to the first surface 1222, so that the movable contact 122 moves from the critical state to the first free state by itself until the movable contact 121 on the movable contact 122 contacts with the stationary contact 111, thereby conducting the circuit. In the process, the push rod 131 is driven to extend into the housing 15.

Referring to fig. 7, when the circuit is to be disconnected, the coil 143 is energized, and the coil 143 generates an electromagnetic force in the energized state, which is greater than the elastic force generated by the elastic member 145, to attract the floating column 1411 to move so as to drive the floating plate 1412 to move toward the supporting portion 142. In this process, the floating plate 1412 gradually applies pressure to the first pressing plate 1442, and the first pressing plate 1442 and the second pressing plate 1443 rotate from the fourth position to the third position under the action of the rotating shaft 1441 until the floating plate 1412 presses the pressing member 144 to make the first pressing plate 1442 abut against the end surface of the supporting portion 142, at this time, the second pressing plate 1443 rotates to the third position. The second contact plate 1443 gradually abuts against an abutting area on the movable contact piece 122 in the rotating process, and drives the first end of the movable contact piece 122 to bend towards the second direction, so that the movable contact piece 122 moves from the first free state to the critical state, and meanwhile, the movable contact 121 on the movable contact piece 122 is separated from the fixed contact 111, and disconnection of a circuit is achieved. Referring to fig. 4, after the power is turned off, the electromagnetic force is removed, and the floating plate 1412 moves away from the supporting portion 142 under the action of the elastic member 145 until the floating member 141 is reset, that is, until the floating plate 1412 abuts against the second side plate 152. As the pressure applied to the first contact plate 1442 is removed, the second contact plate 1443 rotates from the third position to the fourth position by gravity to be separated from the movable contact plate 122, and in this process, the first contact plate 1442 rotates in synchronization with the second contact plate 1443.

In the critical state, referring to fig. 4 and fig. 7, the movable contact 122 in the deformation area 1221 is deformed from being recessed from the second surface 1223 toward the first surface 1222 to being recessed from the first surface 1222 toward the second surface 1223, so that the movable contact 122 moves from the critical state to the second free state. In the second free state, the movable contact 121 remains separated from the stationary contact 111. In the process of moving the movable contact 122 from the first free state to the second free state, the movable contact 122 drives the slider 132 to move from the second position to the first position, the push rod 131 gradually extends out of the housing 15, and when the movable contact 122 is in the second free state, the operation portion 13 is reset. For example, the sliding block 132 may abut against the inner wall of the housing 15 in the first position, so that the operation portion 13 may limit the moving contact 122, so as to avoid collision between the moving contact 122 and the housing 15 caused by an excessive movement range, thereby further improving the reliability of the switch device 1.

In an embodiment, referring to fig. 1 and 2, the stationary contact component 11 further includes a first fixing plate portion 112, the first fixing plate portion 112 is fixed to an inner wall of the housing 15, the stationary contact 111 is disposed on the first fixing plate portion 112, and a terminal of the first fixing plate portion 112 extends out of the housing 15. Thus, the stationary contact 111 is fixed.

The movable contact member 12 further includes a second fixing plate portion 123, the second fixing plate portion 123 is fixed to the inner wall of the housing 15, the second end of the movable contact piece 122 is connected to the second fixing plate portion 123, and the terminal of the second fixing plate portion 123 protrudes outside the housing 15. In this way, not only the movable contact 122 is fixed, but also the deformation of the movable contact 122 is facilitated by fixing the second end of the movable contact 122.

In an embodiment, referring to fig. 1, the switching device 1 further includes a limiting structure 154, the limiting structure 154 is disposed in the housing 15, a second slit 1541 is disposed on the limiting structure 154, and the deformation area 1221 of the movable contact 122 is disposed in the second slit 1541. The position of the deformation area 1221 of the movable contact 122 is limited by the limiting structure 154, so that on one hand, the stability of the arrangement of the movable contact 122 is improved, and on the other hand, the deformation area 1221 is convenient to deform under the action of the operation part 13 and the touch piece 144.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (14)

1. A switching device, the switching device comprising:

a stationary contact part including a stationary contact;

A movable contact member including a movable contact, the movable contact member being configured to have a critical state, a first free state, and a second free state, the movable contact being moved to come close to the stationary contact to be in contact with the stationary contact when switching from the critical state to the first free state, the movable contact being moved to be away from the stationary contact when switching from the critical state to the second free state, the movable contact being kept separate from the stationary contact in the second free state;

an operation portion for driving the movable contact member to deviate from the critical state to move toward one of the first free state and the second free state;

An electrical drive assembly configured to move the movable contact member away from the critical state in an energized state to move the movable contact member toward the other of the first and second free states.

2. The switching device according to claim 1, wherein the movable contact member further includes a movable contact disposed on a first end of the movable contact, the movable contact includes the critical state, the first free state, and the second free state, the operating portion is connected to the movable contact to drive the movable contact to bend in a first direction so as to move the movable contact away from the critical state to one of the first free state and the second free state, and the electric driving assembly is capable of abutting the movable contact to press the movable contact to bend in a second direction so as to move the movable contact away from the critical state to the other of the first free state and the second free state, and the second direction is opposite to the first direction.

3. The switching device according to claim 2, wherein a deformation region is provided on the movable contact, and in the critical state, the deformation region is used to bend the first end of the movable contact in the first direction or the second direction.

4. A switching device according to claim 3, wherein the movable contact comprises a first surface and a second surface facing away from each other, the movable contact in the deformation region being deformed from being concave from the first surface to concave from the second surface to concave from the first surface when switching from the critical state to the first free state, and the movable contact in the deformation region being deformed from concave from the second surface to concave from the first surface to concave from the second surface when switching from the critical state to the second free state.

5. The switching device according to any one of claims 2 to 4, further comprising:

And the shell, the fixed contact component, the movable contact component, the operating part and the electric driving assembly are all arranged in the shell.

6. The switching device according to claim 5, wherein a chute is provided in the housing, and the operating portion includes:

The sliding block is connected to the sliding groove in a sliding manner and is connected with the movable contact piece;

The first end of the push rod is connected with the sliding block, the second end of the push rod stretches out of the shell, the push rod is used for pushing the sliding block to move from a first position to a second position so as to drive the movable contact piece to deviate from the critical state to move to one of the first free state and the second free state, and when the movable contact piece moves from the critical state to the other of the first free state and the second free state, the movable contact piece drives the sliding block to move from the second position to the first position so as to reset the operation part.

7. The switching device according to claim 6, wherein the slider is provided with a first slit, and the first end of the movable contact is disposed in the first slit.

8. The switching device of claim 5, wherein the electrical drive assembly comprises:

The touch assembly comprises a third position and a fourth position, the touch assembly is abutted with the movable contact piece in the third position, and the touch assembly is separated from the movable contact piece in the fourth position;

And an electromagnetic unit, in the energized state, for providing an electromagnetic force to the touch assembly, the electromagnetic force being used to drive the touch assembly to move from the fourth position to the third position.

9. The switching device according to claim 8, wherein an abutting region is further provided on the movable contact, the abutting region is located between the first end of the movable contact and the deformation region, the electromagnetic unit includes a supporting portion and a coil wound outside the supporting portion, a terminal of the coil protrudes outside the housing, the supporting portion is fixed in the housing, and a through hole is provided in the supporting portion along an axial direction of the supporting portion;

The touch assembly includes:

The floating piece comprises a floating column and a floating plate which are connected, the floating column is arranged in the through hole and can move along the axial direction of the through hole, and the orthographic projection of the through hole on the floating plate is positioned in the outer edge of the floating plate;

And one end of the contact element is sleeved on the floating column and is positioned between the supporting part and the floating plate, the other end of the contact element is used for being abutted against the abutting area, the floating plate abuts against the contact element to enable the contact element to be abutted against the abutting area in the third position, and the floating plate is far away from the contact element to enable the contact element to be separated from the movable contact piece in the fourth position.

10. The switch device of claim 9, wherein the contact member comprises a first contact member and a second contact member connected by a rotating shaft, the first contact member is sleeved on the floating post, the second contact member is configured to abut against the abutment region, and the rotating shaft is rotatably connected to the housing, so that the first contact member and the second contact member can rotate around the rotating shaft.

11. The switching device of claim 9, wherein the electromagnetic unit further comprises:

the elastic piece is arranged in the through hole and is used for providing elastic force for the floating piece to enable the floating plate to move in the direction away from the supporting portion.

12. The switchgear device according to claim 11, wherein the casing comprises opposite first and second side plates, one end of the elastic member being connected to the first side plate, the other end of the elastic member being connected to the floating post, and in the fourth position the floating plate abutting against the second side plate.

13. The switching device according to claim 5, wherein the stationary contact member further includes a first fixing plate portion fixed to an inner wall of the housing, the stationary contact is provided to the first fixing plate portion, and a terminal of the first fixing plate portion protrudes to an outside of the housing;

The movable contact part further comprises a second fixed plate part, the second fixed plate part is fixed on the inner wall of the shell, the second end of the movable contact piece is connected with the second fixed plate part, and the wiring end of the second fixed plate part extends out of the shell.

14. The switching device according to claim 5, characterized in that the switching device further comprises:

The limiting structure is arranged in the shell, a second crack is formed in the limiting structure, and the deformation area of the movable contact piece is arranged in the second crack.