Contact mechanism, distribution box and distribution system

Abstract

This application provides a contact mechanism, a distribution box, and a power distribution system. The contact mechanism includes a housing, a linkage, a stationary contact, a moving contact, an electromagnetic structure, and a micro switch. The linkage is slidably mounted on the housing along a first direction. The stationary contact is fixedly disposed on the housing and located on the side of the moving contact facing the micro switch. The linkage includes a first end and a second end arranged along the first direction. The first end of the linkage is connected to the moving contact, and the second end faces the micro switch. The linkage is used to slide along the first direction toward the micro switch, causing the moving contact to contact the stationary contact and turn on the micro switch. Alternatively, the linkage can also slide along the first direction away from the micro switch, causing the moving contact to separate from the stationary contact and turn off the micro switch. The electromagnetic structure is drively connected to the linkage and is used to drive the linkage to slide along the first direction. The electromagnetic structure is connected to a controller, thereby enabling remote control of the operation of the contact mechanism. The structure of the contact mechanism in this solution is relatively simple.

Description

Technical Field

[0001] This application relates to the field of power distribution equipment technology, and in particular to a contact mechanism, a distribution box, and a power distribution system. Background Technology

[0002] A contact mechanism is a switching device capable of carrying and interrupting current under normal circuit conditions, and capable of carrying and interrupting current under abnormal circuit conditions within a specified time. In addition, it can distribute electrical energy and protect power lines and motors, automatically cutting off the circuit when they experience severe overload, short circuit, or undervoltage faults. Therefore, it is widely used in power electronic systems. Ordinary contact mechanisms are purely mechanical structures, susceptible to arcing, and have slow response times. Summary of the Invention

[0003] This application provides a contact mechanism, a distribution box, and a power distribution system. The contact mechanism realizes the linkage between the moving contact and the stationary contact, as well as the switching on and off of the electronic solid-state switch, and the structure of the contact mechanism is relatively simple.

[0004] In a first aspect, this application provides a contact mechanism, which includes a housing, a linkage, a stationary contact, a moving contact, an electromagnetic structure, and a micro switch. Specifically, the micro switch, the stationary contact, and the moving contact are arranged sequentially along a first direction. The linkage is slidably mounted on the housing along the first direction. The stationary contact is fixedly mounted on the housing and located on the side of the moving contact facing the micro switch. The linkage includes a first end and a second end arranged along the first direction, wherein the first end of the linkage is connected to the moving contact, and the second end faces the micro switch. The linkage is used to slide along the first direction toward the micro switch, causing the moving contact to contact the stationary contact, thus turning on the micro switch. Alternatively, the linkage can also slide along the first direction away from the micro switch, causing the moving contact to separate from the stationary contact, thus turning off the micro switch. When the stationary contact and the moving contact are in contact, the entire contact mechanism is electrically connected, equivalent to turning on the contact mechanism; when the stationary contact and the moving contact are separated, the entire contact mechanism is electrically disconnected, equivalent to turning off the contact mechanism. The aforementioned micro switch is electrically connected to the electronic solid-state switch, allowing the micro switch to control the on / off state of the electronic solid-state switch. The aforementioned linkage is a single integrated structure; this design utilizes a single linkage to achieve the linkage between the moving and stationary contacts and the on / off state of the electronic solid-state switch, resulting in a relatively simple structure. Furthermore, compared to contact mechanisms that only have an electronic solid-state switch, this application allows for a visible break point. The aforementioned electromagnetic structure is drively connected to the linkage, driving the linkage to slide along a first direction. Connecting the aforementioned electromagnetic structure to a controller enables remote control of the contact mechanism, allowing for remote control of its operation.

[0005] In another technical solution, the contact mechanism may further include an operating component, which is connected to the linkage component for driving the linkage component to slide along the first direction X. This allows for manual control of the opening and closing of the contact mechanism. Therefore, this solution can achieve both manual operation and remote control of the contact mechanism, and the structure of the contact mechanism is relatively simple.

[0006] When specifically configuring the moving contact, it can be connected to the linkage via an elastic element. This elastic element can absorb part of the stroke, thereby reducing installation accuracy and lowering costs. Furthermore, by making the stroke of the linkage drive the contact mechanism open greater than the distance between the stationary and moving contacts when the contact mechanism is in the open state, a reliable connection between the stationary and moving contacts can be ensured when the contact mechanism is open.

[0007] Specifically, when the aforementioned linkage is configured, the distance between the end face of the second end of the linkage and the end face of the microswitch in the open state when the contact mechanism is in the open state is greater than the distance between the stationary contact and the moving contact. Therefore, during the opening of the contact mechanism, the linkage rod slides towards the microswitch, first bringing the stationary contact and the moving contact into contact. Then, the linkage continues to slide towards the microswitch. Since the moving contact is connected to the linkage via an elastic element, the linkage can continue to slide, improving the connection between the moving and stationary contacts, and allowing it to continue sliding towards the microswitch, ultimately triggering the microswitch and opening the electronic solid-state switch. Similarly, when the contact mechanism is disconnected, the electronic solid-state switch is disconnected first, followed by the moving and stationary contacts. This scheme can achieve arc extinguishing using a simple structure.

[0008] To achieve the transmission connection between the operating element and the linkage rod, the contact mechanism may further include a transmission element. In one technical solution, the transmission element includes a limiting groove, which includes a first wall surface and a second wall surface arranged along a first direction. The linkage element includes a protrusion that extends into the limiting groove. When the transmission element is connected to the operating element, the operating element can drive the transmission element to slide along the first direction, causing the first wall surface or the second wall surface to abut against the protrusion, thereby achieving the purpose of driving the linkage element to slide along the first direction.

[0009] In another technical solution, the aforementioned linkage component includes a limiting groove, which comprises a first wall surface and a second wall surface arranged along a first direction. The transmission component includes a protrusion that extends into the limiting groove. When the transmission component is connected to the operating component, the operating component can drive the transmission component to slide along the first direction, causing the protrusion to abut against the first or second wall surface, thereby achieving the purpose of driving the linkage component to slide along the first direction.

[0010] The aforementioned operating component is slidably mounted on the housing along the first direction, and the operating component and the transmission component are an integral structure. This helps to reduce the number of parts in the contact mechanism, simplify the assembly process of the contact mechanism, and also reduce costs.

[0011] In the specific configuration of the above electromagnetic structure, the electromagnetic structure includes a coil, an iron core, a magnet, and a lever. The iron core may include a horizontal bar and two vertical bars. Specifically, the horizontal bar extends along a first direction, and the two vertical bars are perpendicularly connected to the horizontal bar. The coil is wound around the two vertical bars of the iron core, that is, the coil is wound around the outside of the two vertical bars. Thus, when the coil is energized, the iron core can generate magnetism. The magnet is mounted on the housing via a rotating shaft, the extension direction of which is perpendicular to the first direction. The magnet includes at least one pair of magnetic poles, each pair including an N pole and a S pole. The lever is fixedly connected to the magnet and is driven by a linkage. The N pole and S pole are located on both sides of the horizontal bar, so that energizing the coil can drive the magnet to rotate around the rotating shaft. During the rotation of the magnet, the lever can be driven to swing, thereby driving the linkage to slide back and forth along the first direction X, so as to control the opening or closing of the contact mechanism. The above electromagnetic structure can be connected to a controller, so that the direction of the current energized in the coil of the electromagnetic structure can be controlled by a remote control device to realize remote control of the contact mechanism.

[0012] In a further technical solution, the magnet includes two pairs of magnetic poles, and the magnet includes a third end and a fourth end arranged along a first direction. The third end includes a pair of magnetic poles, and the fourth end also includes a pair of magnetic poles. This solution allows for a larger magnetic force exerted by the crossbar on the magnet, and a more uniform force on the magnet.

[0013] The aforementioned contact mechanism may further include a locking structure, which includes a locking part mounted to the housing via a pivot. One end of the locking part includes a latch for engaging with the insert frame; specifically, the latch can only engage with the insert frame after it extends out of the housing. The locking part also includes a limiting surface; when the operating member drives the linkage to open the micro switch, the operating member abuts against the limiting surface, fixing the latch in the extended position. In this design, when the contact mechanism is activated, the operating member locks the locking structure, preventing the contact mechanism from accidentally disengaging during operation and preventing operator error leading to live insertion or removal.

[0014] The aforementioned locking structure may further include a reset member, which is installed between the housing and the locking part. The reset member is used to apply a driving force to the card head to extend out of the housing, thereby driving the card head to extend out of the housing and engaging the card head with the insert frame.

[0015] In the specific configuration of the above-mentioned locking structure, the locking structure further includes a transmission block. The end of the reset member away from the housing is connected to the transmission block, and the transmission block and the locking part are connected by a beveled fit. In this scheme, the linear motion of the reset member can be converted into the arc motion of the locking part, making the structure of the locking structure simple and facilitating the simplification of the contact mechanism structure.

[0016] When the contact mechanism includes a transmission component, a first elastic element is provided between the protrusion and the first wall surface, or a second elastic element is provided between the protrusion and the second wall surface. Alternatively, the first elastic element can be provided between the protrusion and the first wall surface, and the second elastic element can be provided between the protrusion and the second wall surface. In this solution, during the closing of the contact mechanism, when the linkage moves away from the micro switch to its endpoint, the operating component still has a certain travel margin, allowing it to continue moving away from the micro switch. This causes the limiting part of the operating component to disengage from the limiting surface of the locking part, thereby unlocking the locking structure. This solution ensures that unlocking only occurs after the contact mechanism is de-energized, allowing the contact mechanism to be pulled out of the insert frame. Therefore, this solution improves the operational reliability of the contact mechanism.

[0017] In another technical solution, the contact mechanism may further include an indicator light, which indicates whether the contact mechanism is in an open or closed state. The operating component includes a light guide post, which is disposed opposite to the indicator light, so that the surface of the light guide post can be observed from the outside of the operating component to observe the status of the indicator light.

[0018] Secondly, this application also provides a power distribution box, which includes a box body and the contact mechanism described in the first aspect. A frame is provided on the box body, and the contact mechanism is inserted into the frame. The contact mechanism is used for electrical connection with the power supply terminal of the power distribution system. The contact mechanism in this power distribution box realizes the linkage between the moving contact and the stationary contact, as well as the on / off state of the electronic solid-state switch. Furthermore, the structure of the contact mechanism is relatively simple, which helps to reduce the size of the power distribution box and improve its integration.

[0019] Thirdly, this application also provides a power distribution system, which includes a power supply terminal and a distribution box as described in the second aspect. The distribution box is electrically connected to the power supply terminal, thereby realizing the electrical connection between the contact mechanism and the power supply terminal. In this solution, the distribution box is small in size and has a high degree of integration, so the power distribution system can have a high degree of integration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one structure of the contact mechanism in an embodiment of this application;

[0021] Figure 2 This is an exploded structural diagram of the contact mechanism in an embodiment of this application;

[0022] Figures 3a-3c This is a schematic diagram of one opening process of the contact mechanism in an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of an electromagnetic structure in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of one structure of the locking part in an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of one structure of the operating component in an embodiment of this application;

[0026] Figure 7 This is a partial structural diagram of the contact mechanism in an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of a transmission block in one embodiment of this application;

[0028] Figures 9a-9d This is a schematic diagram of the operation process of the contact mechanism in one embodiment of this application;

[0029] Figures 10a-10d This is a schematic diagram of another operation process of the contact mechanism in an embodiment of this application;

[0030] Figure 11 This is a schematic diagram of a power distribution box in one embodiment of this application;

[0031] Figure 12 This is a schematic diagram of another structure of the power distribution box in an embodiment of this application.

[0032] Figure label:

[0033] 10 - Contact mechanism; 20 - Box body;

[0034] 30 - Connector; 1 - Housing;

[0035] 2-Operating component; 21-Limit groove;

[0036] 211-the first wall; 212-the second wall;

[0037] 22-Fixing part; 23-First elastic element;

[0038] 3-Linkage component; 31-First end;

[0039] 32 - Second end; 33 - Protrusion;

[0040] 4-Stationary contact; 5-Moving contact;

[0041] 6-Electromagnetic structure; 61-Coil;

[0042] 62 - Iron core; 621 - Crossbar;

[0043] 622 - Vertical rod; 63 - Magnet;

[0044] 631 - N pole; 632 - S pole;

[0045] 633 - Third end; 634 - Fourth end;

[0046] 64 - Toggle lever; 7 - Micro switch;

[0047] 8-Elastic element; 9-Locking structure;

[0048] 91-Locking part; 911-Card head;

[0049] 912 - Limiting surface; 92 - Rotating shaft;

[0050] 93-Reset component; 94-Transmission block;

[0051] 941 - First inclined plane; 942 - Opening;

[0052] X - First direction. Detailed Implementation

[0053] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more” unless the context clearly indicates otherwise.

[0054] References to “an embodiment” or “a specific embodiment” as used in this specification mean that one or more embodiments of this application include a particular feature, structure, or characteristic described in connection with that embodiment. The terms “comprising,” “including,” “having,” and variations thereof mean “including, but not limited to,” unless otherwise specifically emphasized.

[0055] To facilitate understanding of the contact mechanism, distribution box, and power distribution system provided in this application embodiment, their application scenarios are first introduced below. Specifically, the aforementioned contact mechanism can be a circuit breaker, which can be widely used in various power distribution systems. For example, a circuit breaker can be used in a household power distribution system to connect, carry, and disconnect the current between the power grid and the household circuit. Taking a power distribution system with four household circuits as an example, namely household circuit 1, household circuit 2, household circuit 3, and household circuit 4. Furthermore, each household circuit has a corresponding circuit breaker, namely circuit breaker 1, circuit breaker 2, circuit breaker 3, and circuit breaker 4. When it is necessary to connect the power grid or power supply to the household circuit, the circuit breaker can be switched to the closed state; when it is necessary to disconnect the power grid from the household circuit, the circuit breaker can be switched to the open state. The power supply status of the household circuit can be controlled by controlling the closed and open states of the circuit breaker. For example, when household number one meets normal electricity needs, staff can switch circuit breaker number one to the closed state to allow household number one to use electricity normally. When household number two is in arrears on electricity bills or is in an abnormal state, staff can switch circuit breaker number two to the open state to prevent that user from using electricity.

[0056] In addition, circuit breakers can also be used in the power distribution systems of enterprise or public electrical equipment to connect, carry, and disconnect the current between the power supply network and the enterprise or public electrical equipment. For example, when electrical equipment (such as 4G or 5G base stations) needs to operate normally, workers can switch the circuit breaker to the closed state so that the power supply network can provide the necessary electrical energy for normal operation. When electrical equipment needs inspection or maintenance, workers can switch the circuit breaker to the open state to facilitate inspection and maintenance work.

[0057] Circuit breakers can be equipped with a contact system, which includes stationary and moving contacts. When the stationary and moving contacts are in contact, the circuit breaker is in the closed state. When the moving contact is moved or rotated and separates from the stationary contact, the circuit breaker is in the open state. Switching between the closed and open states of the circuit breaker is achieved by operating the contact and separation states of the stationary and moving contacts. Currently, circuit breakers have mechanical operating buttons for controlling the position of the moving contact. When switching between the closed and open states of the circuit breaker is required, personnel must be physically present at the circuit breaker site, which is inconvenient and inefficient. To achieve remote operation of circuit breakers, a motor can be incorporated into the circuit breaker. The motor is connected to the moving contact via gears, reducers, or other transmission mechanisms. The rotation of the motor drives the moving contact, causing it to contact or separate from the stationary contact. The closed and open states of the circuit breaker can be switched remotely by controlling the operation of the motor. However, in practical applications, the high cost of motors increases the manufacturing cost of circuit breakers, hindering their widespread use. Furthermore, motors require gears, reducers, and other transmission components for operation, increasing the cost and size of the circuit breaker and hindering miniaturization design. Additionally, the increased number of moving parts (such as gears) reduces the reliability of the circuit breaker. Therefore, this application provides a contact mechanism that is remotely controllable, simple in structure, and safe and reliable.

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0059] Figure 1 This is a schematic diagram of one structure of the contact mechanism in an embodiment of this application. Figure 2 This is an exploded structural diagram of the contact mechanism in an embodiment of this application. Figure 1 and Figure 2As shown, the contact mechanism in this embodiment includes a housing 1, an operating component 2, a linkage component 3, a stationary contact 4, a moving contact 5, an electromagnetic structure 6, and a micro switch 7. The linkage component 3, stationary contact 4, moving contact 5, electromagnetic structure 6, and micro switch 7 are all mounted on the housing 1. The micro switch 7, stationary contact 4, and moving contact 5 are arranged sequentially along a first direction X. This is only a general description of the arrangement order of the micro switch 7, stationary contact 4, and moving contact 5 along the first direction X; they are not necessarily located on the same straight line. The stationary contact 4 is fixedly disposed on the housing 1, located on the side of the moving contact 5 facing the micro switch 7, and the stationary contact 4 and moving contact 5 are arranged opposite each other. When the moving contact 5 moves along the first direction X, it can contact or separate from the stationary contact 4. When the stationary contact 4 contacts the moving contact 5, the entire contact mechanism is electrically connected, equivalent to opening the contact mechanism; when the stationary contact 4 separates from the moving contact 5, the entire contact mechanism is electrically disconnected, equivalent to closing the contact mechanism. The aforementioned contact mechanism also includes a circuit board, on which an electronic solid-state switch (not shown in the figure) and a controller (not shown in the figure) are also provided. The micro switch 7 is electrically connected to the electronic solid-state switch, so the micro switch 7 can control the on / off state of the electronic solid-state switch. The controller is connected to the electromagnetic structure 6 and is used to control the operation of the electromagnetic structure 6.

[0060] Specifically, the linkage 3 is slidably mounted on the housing 1, located between the stationary contact 4 and the micro switch 7. The sliding direction of the linkage 3 is the first direction X, and the linkage 3 includes a first end 31 and a second end 32 arranged along the first direction X. Specifically, the main body of the linkage 3 can be rod-shaped, with a relatively simple structure. The first end 31 and the second end 32 can be understood as the two ends of the rod-shaped linkage 3. The first end 31 is connected to the moving contact 5, so that when the linkage 3 slides along the first direction X, it can drive the moving contact 5 to move along the first direction X, thus realizing the contact and separation of the stationary contact 4 and the moving contact 5. The second end 32 faces the micro switch 7, so that when the linkage 3 slides along the first direction X, it can turn the micro switch 7 on or off. For details, please refer to [link / reference needed]. Figure 1When the linkage 3 slides along the first direction X toward the micro switch 7, it can cause the moving contact 5 to contact the stationary contact 4, energizing the contact mechanism and opening the micro switch 7, thus opening the contact mechanism. Conversely, when the linkage 3 slides away from the micro switch 7 along the first direction X, it can cause the moving contact 5 to separate from the stationary contact 4, closing the micro switch 7 and closing the contact mechanism. Furthermore, the electromagnetic structure 6 is also connected to the linkage 3 and can be used to drive the linkage 3 to slide along the first direction X to control the opening and closing of the contact mechanism. Specifically, the electromagnetic structure 6 is connected to a controller to achieve remote control of the contact mechanism. In this scheme, a single linkage 3 is used to achieve the linkage between the moving contact 5 and the stationary contact 4, as well as the on / off state of the electronic solid-state switch, resulting in a relatively simple structure. Compared to contact mechanisms with only an electronic solid-state switch, this application allows for a visible break point.

[0061] In a specific embodiment, the contact mechanism may further include an operating element 2, which is connected to the linkage element 3 for driving the linkage element 3 to slide along the first direction X. This allows for manual control of the opening and closing of the contact mechanism. Therefore, this solution can achieve both manual operation and remote control of the contact mechanism, and the structure of the contact mechanism is relatively simple.

[0062] Please continue to refer to this. Figure 1 Specifically, when configuring the moving contact 5, it can be connected to the linkage 3 via an elastic element 8. This elastic element 8 can absorb part of the stroke, thereby reducing installation accuracy and lowering costs. Furthermore, by making the stroke of the linkage 3 driving the contact mechanism open greater than the distance between the stationary contact 4 and the moving contact 5 when the contact mechanism is in the open state, the stationary contact 4 and the moving contact 5 can be reliably connected when the contact mechanism is open.

[0063] Figures 3a-3c This is a schematic diagram of one opening process of the contact mechanism in an embodiment of this application. Please refer to it. Figure 3a In a specific embodiment, when the contact mechanism is in the open state, the distance 'a' between the end face of the second end 32 of the linkage 3 and the end face of the micro switch 7 facing the second end 32 in the open state is greater than the distance 'b' between the stationary contact 4 and the moving contact 5. That is, the stroke by which the linkage 3 triggers the contact between the stationary contact 4 and the moving contact 5 is less than the stroke by which the linkage 3 triggers the micro switch 7 to open. Therefore, during the opening of the contact mechanism, the linkage rod slides in the direction towards the micro switch 7, first causing the stationary contact 4 to contact the moving contact 5, such as... Figure 3bAs shown, at this point, the micro switch 7 is not yet turned on; then, the linkage 3 continues to slide towards the micro switch 7. Since the moving contact 5 is connected to the linkage 3 through the elastic element 8, the linkage 3 can continue to slide, which can improve the connection effect between the moving contact 5 and the stationary contact 4. After that, the micro switch 7 is triggered, causing the electronic solid-state switch to turn on, as shown. Figure 3c As shown. Of course, when disconnecting the contact mechanism, the electronic solid-state switch is disconnected first, followed by the moving contact 5 and the stationary contact 4. This scheme can achieve arc extinguishing using a simple structure.

[0064] Please continue to refer to this. Figure 1 and Figures 3a-3c To achieve the transmission connection between the operating element 2 and the linkage element 3, the aforementioned contact mechanism further includes a transmission element. This transmission element includes a limiting groove 21, which comprises a first wall surface 211 and a second wall surface 212 arranged along the first direction X. The linkage element 3 includes a protrusion 33 extending into the limiting groove 21. The transmission element is connected to the operating element 2, allowing the operating element 2 to drive the transmission element to slide along the first direction X. When the transmission element slides along the first direction X, the first wall surface 211 or the second wall surface 212 of the limiting groove 21 abuts against the protrusion 33, thereby driving the linkage element 3 to slide along the first direction X. In this scheme, the operating element 2 can drive the linkage element 3 to reciprocate along the first direction X to achieve the opening and closing of the contact mechanism.

[0065] Similarly, in another embodiment, the linkage 3 can include a limiting groove 21, which includes a first wall surface 211 and a second wall surface 212 arranged along the first direction X. The transmission component includes a protrusion 33 that extends into the limiting groove 21. The transmission component is connected to the operating component 2, which drives the transmission component to slide along the first direction X, causing the protrusion 33 to abut against the first wall surface 211 or the second wall surface 212, thereby driving the linkage 3 to slide along the first direction X. This solution can also use the operating component 2 to drive the linkage 3 to reciprocate along the first direction X to achieve the opening and closing of the contact mechanism.

[0066] In specific embodiments, the connection method between the transmission component and the operating component 2 is not limited, nor is the movement form of the operating component 2 limited. For example, in one embodiment, the shaft of the operating component 2 can be mounted on the housing 1, allowing the operating component 2 to swing. When the operating component 2 swings, it can move the transmission component to slide along the first direction X. Or, as... Figures 3a-3c As shown, in another embodiment, the aforementioned operating member 2 can be slidably mounted on the housing 1. The operating member 2 can slide relative to the housing 1 along the first direction X, thereby driving the transmission member to slide along the first direction X. Furthermore, the aforementioned transmission member and operating member 2 can be integrated into a single structure, which helps to reduce the number of parts in the contact mechanism, simplify the assembly process of the contact mechanism, and also reduce costs.

[0067] Figure 4 This is a schematic diagram of an electromagnetic structure in an embodiment of this application. Please refer to it. Figure 1 and Figure 4 In a specific embodiment, the electromagnetic structure 6 includes a coil 61, an iron core 62, a magnet 63, and a lever 64. Specifically, the iron core 62 may include a horizontal bar 621 and two vertical bars 622. The horizontal bar 621 extends along a first direction X, and the two vertical bars 622 are perpendicularly connected to the horizontal bar 621. In a specific embodiment, the horizontal bar 621 and the two vertical bars 622 are an integral structure. The perpendicularity of the vertical bars 622 to the horizontal bar 621 means approximately perpendicular; that is, the angle between the horizontal bar 621 and the vertical bars 622 is not necessarily strictly 90°, but can be 85°, 86°, 87°, 88°, 89°, 91°, 92°, 93°, 94°, or 95°, etc. The coil 61 is wound around the two vertical bars 622 of the iron core 62, that is, the coil 61 is wound around the outside of the two vertical bars 622. When coil 61 is energized, the iron core 62 becomes magnetic, meaning the crossbar 621 becomes magnetic. Magnet 63 is mounted on housing 1 via a rotating shaft; specifically, the extension direction of the rotating shaft is perpendicular to the aforementioned first direction X. Magnet 63 includes at least one pair of magnetic poles, each pair comprising an N pole 631 and an S pole 632. A lever 64 is fixedly connected to magnet 63 and is drively connected to linkage 3. Since the N pole 631 and S pole 632 are located on either side of crossbar 621, energizing coil 61 makes crossbar 621 magnetic, attracting either the N pole or the S pole, thereby driving magnet 63 to rotate around the rotating shaft. Specifically, the direction of the current flowing through coil 61 affects the magnetism of crossbar 621, thus driving either the N pole 631 or the S pole 632 of magnet 63 to approach crossbar 621, meaning magnet 63 can rotate clockwise or counterclockwise. During the rotation of magnet 63, lever 64 can swing, thereby driving linkage 3 to slide back and forth along the first direction X, thus controlling the opening or closing of the contact mechanism. The aforementioned electromagnetic structure 6 is connected to a controller; therefore, the direction of the current flowing through the coil 61 of the electromagnetic structure 6 can be controlled remotely via a remote control device to achieve remote control of the contact mechanism.

[0068] For specific implementation details, please refer to the following: Figure 1 and Figure 4The magnet 63 includes two pairs of magnetic poles. The magnet 63 includes a third end 633 and a fourth end 634 arranged along a first direction X. The third end 633 includes a pair of magnetic poles, each consisting of an N pole portion 631 and an S pole portion 632. The fourth end 634 includes another pair of magnetic poles, each consisting of an N pole portion 631' and an S pole portion 632'. Specifically, the magnet 63 can be configured such that the N pole portion 631 of the third end 633 is located on the side of the crossbar 621 facing away from the linkage 3, and the S pole portion 632 is located on the side of the crossbar 621 facing the linkage 3; similarly, the N pole portion 631' of the fourth end 634 is located on the side of the crossbar 621 facing the linkage 3, and the S pole portion 632' is located on the side of the crossbar 621 facing away from the linkage 3. This ensures that when the crossbar 621 is magnetic, it can drive the magnet 63 to rotate. Alternatively, the N-pole 631' of the fourth end 634 can be located on the side of the crossbar 621 away from the linkage 3, and the S-pole 632' can be located on the side of the crossbar 621 facing the linkage 3; the N-pole 631 of the third end 633 can be located on the side of the crossbar 621 facing the linkage 3, and the S-pole 632 can be located on the side of the crossbar 621 away from the linkage 3. This arrangement allows for a larger magnetic force exerted by the crossbar 621 on the magnet 63, and a more uniform force on the magnet 63.

[0069] Figure 5 This is a schematic diagram of one structure of the locking part in an embodiment of this application. Figure 6 This is a schematic diagram of one structure of the operating element 2 in an embodiment of this application. Figure 7 This is a partial structural diagram of the contact mechanism in an embodiment of this application.

[0070] Please refer to Figure 2 , Figures 3a-3c , Figure 5 , Figure 6 and Figure 7To improve the reliability of the contact mechanism installation when mounted on the insert frame, the contact mechanism can also include a locking structure 9. This locking structure 9 includes a locking part 91, which is connected to the housing 1 via a pivot 92. One end of the locking part 91 includes a latch 911 for engaging with the insert frame. The insert frame may have a positioning hole that mates with the locking structure 9. When the contact mechanism is inserted into the insert frame, the insert frame presses down on the locking structure 9, causing the latch 911 to be hidden inside the housing 1. After the contact mechanism is installed in place, the positioning hole can avoid the latch 911 of the locking structure 9, allowing the latch 911 to pop out to the outside of the housing 1 and engage with the positioning hole, thereby fixing the contact mechanism to the insert frame. The locking part 91 also includes a limiting surface 912, and the operating member 2 includes a fixing part 22 that mates with the limiting surface 912. When the operating member 2 drives the linkage unit to open the micro switch 7, the fixing part 22 of the operating member 2 abuts against the aforementioned limiting surface 912, driving the locking head 911 to extend out of the housing 1 and fix it. In other words, the operating member 2 keeps the locking head 911 in the extended state of the housing 1. In this solution, when the contact mechanism is opened, the operating member 2 locks the locking structure 9, preventing the contact mechanism from accidentally falling off during operation and also preventing operator error from causing live insertion or removal.

[0071] The locking structure 9 may further include a reset member 93, which is installed between the housing 1 and the locking part 91. The reset member 93 is used to apply a driving force to the latch 911 to extend out of the housing 1, thereby driving the latch 911 to extend out of the housing 1 and thus engaging the latch 911 with the insert frame.

[0072] Figure 8 This is a schematic diagram of a transmission block in one embodiment of this application. Please refer to it for further details. Figure 2 and Figure 8 As shown, the locking structure 9 also includes a transmission block 94, and a reset member 93 is installed between the transmission block 94 and the housing 1. That is, the end of the reset member 93 away from the housing 1 is connected to the transmission block 94. The transmission block 94 is slidably mounted on the housing 1, so that the reset member 93 can drive the transmission block 94 to slide relative to the housing 1. The transmission block 94 has a first inclined surface 941 facing the locking part 91, and the locking part 91 is in contact with the first inclined surface 941. When the reset member 93 drives the transmission block 94 to slide in the housing 1, the transmission block 94 can drive the locking part 91 to swing, causing the latch 911 to extend out of the housing 1. In this design, the linear motion of the reset member 93 can be converted into the arc motion of the locking part 91. Specifically, the reset member 93 can be a linear spring to simplify its structure and reduce costs. The locking structure 9 in this design is also relatively simple, which helps to simplify the structure of the contact mechanism.

[0073] In a specific embodiment, the housing 1 may have a mounting groove, the transmission block 94 is slidably mounted in the mounting groove, and the reset member 93 is mounted between the bottom wall of the mounting groove and the transmission block 94. The transmission block 94 may have an opening 942, and the reset member 93 is disposed in the opening.

[0074] Please continue to refer to this. Figure 1 and Figure 2 A first elastic element 23 can be provided between the protrusion 33 and the first wall surface 211, and a second elastic element can be provided between the protrusion 33 and the second wall surface 212. That is, at least one elastic element is provided between the protrusion 33 and the limiting groove 21. In this scheme, when the linkage 3 is driven away from the micro switch 7 by utilizing the cooperation between the limiting groove 21 and the protrusion 33, that is, during the closing of the contact mechanism, when the linkage 3 moves away from the micro switch 7 to the end point, under the action of the first elastic element 23 and / or the second elastic element, the operating element 2 still has a certain stroke margin, and the operating element 2 can continue to move away from the micro switch 7, thereby causing the limiting part of the operating element 2 to disengage from the limiting surface 912 of the locking part 91, thereby enabling the locking structure 9 to be unlocked. This scheme can ensure that the contact mechanism is unlocked only after the power is cut off, and the contact mechanism can be pulled out of the insertion frame. Of course, during the insertion of the contact mechanism into the insert frame, if the operating member 2 has already moved towards the micro switch 7, causing the moving contact 5 to contact the stationary contact 4, and the micro switch 7 is turned on, then the operating member 2 causes the locking head 911 of the locking structure 9 to be in the extended state of the housing 1. The insert frame cannot make the locking head 911 retract into the housing 1 against the action of the reset member 93. Therefore, the contact mechanism can only be installed into the insert frame after the contact mechanism is completely disconnected. Therefore, this solution can improve the working reliability of the contact mechanism.

[0075] The aforementioned contact mechanism may also include an indicator light, which indicates whether the contact mechanism is in an open or closed state. The operating component 2 includes a light guide post, which is positioned opposite the indicator light. This means that the light from the indicator light can be transmitted through the light guide post, allowing the user to see the current operating status of the contact mechanism from the outside of the operating component 2.

[0076] The working process of the contact mechanism in the embodiments of this application is described below with reference to the accompanying drawings. First, the manual operation process of installing the contact mechanism into the insert frame and opening it is described. Figures 9a-9d This is a schematic diagram of the operation process of the contact mechanism in an embodiment of this application, such as... Figures 9a-9d As shown:

[0077] like Figure 9aIn the indicated state, the contact mechanism is inserted into the insert frame. At this time, the contact mechanism is not fully installed, and the locking head 911 has not protruded from the housing 1. The operating member 2 is pushed towards the micro switch 7 to install the contact mechanism into place, causing the locking head 911 to protrude from the housing 1. The operating member 2 is then pushed further until its fixing part 22 abuts against the limiting surface 912 of the locking structure 9, locking the contact mechanism onto the insert frame (at this time, the first elastic member 23 can function). Figure 9b As shown, at this time, the moving contact 5 and the stationary contact 4 are not in contact, and the micro switch 7 is not turned on. Continuing to push the operating member 2 towards the micro switch 7, the second wall surface 212 abuts against the protrusion 33, driving the linkage rod to slide towards the micro switch 7. After sliding a certain distance, the moving contact 5 contacts the stationary contact 4. At this time, the micro switch 7 is not turned on. Figure 9c As shown; continue pushing the operating member 2 towards the micro switch 7, the second wall surface 212 continues to abut against the protrusion 33, and continues to drive the linkage rod to slide towards the micro switch 7, thereby causing the linkage rod to apply pressure to the micro switch 7, causing the micro switch 7 to open, as shown. Figure 9d As shown. At this point, the installation and activation of the contact mechanism are complete.

[0078] The following describes the manual operation process of closing the contact mechanism and removing it from the insert frame. Figures 10a-10d This is a schematic diagram of another operation process of the contact mechanism in an embodiment of this application, such as... Figures 10a-10d As shown:

[0079] like Figure 10a As shown, the contact mechanism is installed in the insert frame and is in the open state. At this time, the second wall surface 212 abuts against the protrusion 33, the linkage rod abuts against the micro switch 7, the moving contact 5 contacts the stationary contact 4, and the micro switch 7 is turned on. Pulling the operating member 2 away from the micro switch 7 causes the first wall surface 211 of the limiting groove 21 to drive the protrusion 33 to move through the elastic element, causing the linkage rod to move away from the micro switch 7, thus turning off the micro switch 7. Figure 10b As shown, at this time, the moving contact 5 is still in contact with the stationary contact 4; then, the operating member 2 is pulled further away from the micro switch 7, causing the linkage rod to continue moving away from the micro switch 7, thus separating the moving contact 5 from the stationary contact 4, as shown. Figure 10c As shown; subsequently, when it is necessary to remove the contact mechanism from the insert frame, the operating member 2 can be pulled further away from the micro switch 7, causing the fixing part 22 of the operating member 2 to disengage from the limiting surface 912 of the locking part 91, so that the locking structure 9 can be unlocked. The operating member 2 can then be pulled further away from the micro switch 7, causing the locking head 911 to retract into the housing 1, as shown. Figure 10d As shown.

[0080] like Figures 9a-9d and Figures 10a-10dAs shown, during manual operation, the electromagnetic structure 6 moves in tandem with the linkage 3. When the contact mechanism is opened and closed remotely, the controller directly inputs current into the electromagnetic structure 6. By controlling the direction of the current, the direction of movement of the linkage 3 can be controlled. The contact between the moving contact 5 and the stationary contact 4, and the sequence of opening and closing of the micro switch 7 are the same as described above, and will not be repeated here.

[0081] Figure 11 This is a schematic diagram of a power distribution box in one embodiment of this application; Figure 12 This is a schematic diagram of another structure of the power distribution box in an embodiment of this application. For example... Figure 11 and Figure 12 As shown in the figure, this application embodiment also provides a power distribution box, which is used to realize the deployment and distribution of circuits. It can be applied to the power distribution system of wireless high-power 5G (fifth generation mobile communication technology, abbreviated as 5G) base stations, and can also be applied to the power distribution system of home circuits. This embodiment does not limit the field of application of the power distribution box, and it can be applied to the line connection in any field.

[0082] The power distribution box of this application embodiment may include a box body 20 and one or more of the above-mentioned contact mechanisms 10. The box body 20 has a slotted frame that corresponds to each contact mechanism 10, so that the contact mechanism 10 can be inserted into the slotted frame. When there are multiple contact mechanisms 10, the multiple contact mechanisms 10 can be arranged in parallel, and each contact mechanism 100 is connected to the power supply terminal of the power distribution system. That is to say, the contact mechanism 10 is electrically connected to the power supply terminal.

[0083] like Figure 11 and Figure 12 As shown, the distribution box may also include a connector 30, which serves as an intermediate transition connector and is electrically connected to multiple contact mechanisms 10 respectively. These multiple contact mechanisms 10 are connected in parallel, and the connector 30 is used to connect each contact mechanism 10 to the power supply terminal.

[0084] In one specific embodiment, the aforementioned power distribution box can be a DCDU (direction current distribution unit), which can also be called a DC power distribution unit, such as... Figure 11 The power distribution box shown is a schematic diagram of the DCDU structure. For example, in the power distribution system of a base station, after the mains power is introduced, it is rectified by the rectifier module and distributed to the DCDU. Then, the DCDU distributes several DC power sources to the main equipment of the base station. That is, one DC power source enters the DCDU and is divided into multiple branch power sources (with different amperages) to supply power to each main equipment of the base station.

[0085] In another specific embodiment, the power distribution box can also be a PDU (power distribution unit), which is a power distribution socket for the server rack, such as... Figure 12 The power distribution box shown is a structural diagram of a PDU. In this implementation, the PDU is a product designed to provide power distribution for rack-mounted electrical equipment. It has various series and specifications with different functions, installation methods, and different socket combinations, and can provide suitable rack-mounted power distribution solutions for different power environments.

[0086] Connector 30, also known as the input connector, has its input end electrically connected to the power supply end, and its output end electrically connected to multiple contact mechanisms 10. In implementation, the contact mechanisms 10 can divide a single power supply entering the distribution box into multiple power supplies. Each contact mechanism 10 can be connected to one or more load devices. For example, in household electricity, one contact mechanism 10 can be connected to an air conditioner, another to a refrigerator, and yet another to lighting equipment. Using one contact mechanism 10 for one or more load devices can protect the circuit, ensuring that even if one circuit fails, load devices on other circuits can continue to operate.

[0087] Based on the same inventive concept, this application also provides a power distribution system, which includes a power supply terminal and a distribution box as described in any of the above embodiments. The distribution box is electrically connected to the power supply terminal. Specifically, the power supply terminal can be AC ​​mains power, a generator, a battery, etc.

[0088] The aforementioned power distribution system may also include a connector that can be connected to the connector of the power distribution box to enable electrical connection between the power distribution box and the power supply.

[0089] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A contact mechanism, characterized in that, It includes a housing, linkage components, stationary contact, moving contact, electromagnetic structure, and micro switch, wherein: The linkage is slidably mounted on the housing along a first direction. The linkage includes a first end and a second end arranged along the first direction. The first end is connected to the moving contact, and the second end faces the micro switch. The stationary contact is fixedly disposed on the housing and located on the side of the moving contact facing the micro switch. The linkage is used to slide along the first direction toward the micro switch, causing the moving contact to contact the stationary contact and turn on the micro switch, or to slide along the first direction away from the micro switch, causing the moving contact to separate from the stationary contact and turn off the micro switch. The electromagnetic structure is connected to the linkage component for driving the linkage component to slide along the first direction; The linkage component is an integral structural component.

2. The contact mechanism as described in claim 1, characterized in that, It also includes an operating component, which is mounted on the housing and is connected to the linkage component for transmission, and is also used to drive the linkage component to slide along the first direction.

3. The contact mechanism as described in claim 1 or 2, characterized in that, The moving contact is connected to the linkage via an elastic element.

4. The contact mechanism as described in claim 3, characterized in that, When the contact mechanism is in the open state, the distance between the end face of the second end of the linkage and the end face of the micro switch in the open state is greater than the distance between the stationary contact and the moving contact.

5. The contact mechanism as described in claim 2, characterized in that, It also includes transmission components; The transmission component includes a limiting groove, the limiting groove includes a first wall surface and a second wall surface arranged along the first direction, and the linkage component includes a protrusion that extends into the limiting groove; the transmission component is connected to the operating component, and the operating component is used to drive the transmission component to slide along the first direction, such that the first wall surface or the second wall surface abuts against the protrusion, thereby driving the linkage component to slide along the first direction. Alternatively, the linkage includes a limiting groove, the limiting groove including a first wall surface and a second wall surface arranged along the first direction, the transmission component includes a protrusion extending into the limiting groove; the transmission component is connected to the operating component, the operating component is used to drive the transmission component to slide along the first direction, such that the protrusion abuts against the first wall surface or the second wall surface, thereby driving the linkage component to slide along the first direction.

6. The contact mechanism as described in claim 5, characterized in that, A first elastic element is provided between the protrusion and the first wall surface, and / or a second elastic element is provided between the protrusion and the second wall surface.

7. The contact mechanism as described in claim 5 or 6, characterized in that, The operating component is slidably mounted on the housing along the first direction, and the operating component and the transmission component are an integral structure.

8. The contact mechanism as described in any one of claims 1, 2, 4 to 6, characterized in that, The electromagnetic structure includes a coil, an iron core, a magnet, and a lever. The iron core includes a horizontal bar and two vertical bars. The horizontal bar extends along the first direction, and the two vertical bars are perpendicularly connected to the horizontal bar to form the iron core. The coil is wound around the outside of the two vertical bars. The magnet is mounted on the housing via a rotating shaft. The magnet includes at least one pair of magnetic poles, each pair of magnetic poles including an N pole and a S pole. The N pole and S pole of each pair of magnetic poles are respectively located on both sides of the horizontal bar. The lever is fixedly connected to the magnet and is drively connected to the linkage. The coil is used to energize and de-energize to drive the magnet to rotate around the rotating shaft, causing the lever to swing and driving the linkage to slide along the first direction.

9. The contact mechanism as described in claim 8, characterized in that, The magnet includes two pairs of magnetic poles, and the magnet includes a third end and a fourth end arranged along the first direction, the third end including a pair of magnetic poles, and the fourth end including a pair of magnetic poles.

10. The contact mechanism as described in claim 3, characterized in that, The electromagnetic structure includes a coil, an iron core, a magnet, and a lever. The iron core includes a horizontal bar and two vertical bars. The horizontal bar extends along the first direction, and the two vertical bars are perpendicularly connected to the horizontal bar to form the iron core. The coil is wound around the outside of the two vertical bars. The magnet is mounted on the housing via a rotating shaft. The magnet includes at least one pair of magnetic poles, each pair of magnetic poles including an N pole and a S pole. The N pole and S pole of each pair of magnetic poles are respectively located on both sides of the horizontal bar. The lever is fixedly connected to the magnet and is drively connected to the linkage. The coil is used to energize and de-energize to drive the magnet to rotate around the rotating shaft, causing the lever to swing and driving the linkage to slide along the first direction.

11. The contact mechanism as described in claim 7, characterized in that, The electromagnetic structure includes a coil, an iron core, a magnet, and a lever. The iron core includes a horizontal bar and two vertical bars. The horizontal bar extends along the first direction, and the two vertical bars are perpendicularly connected to the horizontal bar to form the iron core. The coil is wound around the outside of the two vertical bars. The magnet is mounted on the housing via a rotating shaft. The magnet includes at least one pair of magnetic poles, each pair of magnetic poles including an N pole and a S pole. The N pole and S pole of each pair of magnetic poles are respectively located on both sides of the horizontal bar. The lever is fixedly connected to the magnet and is drively connected to the linkage. The coil is used to energize and de-energize to drive the magnet to rotate around the rotating shaft, causing the lever to swing and driving the linkage to slide along the first direction.

12. The contact mechanism as described in claim 2, characterized in that, It also includes a locking structure, which includes a locking part that is mounted on the housing via a pivot. One end of the locking part includes a latch for engaging with the insert frame. The locking part also includes a limiting surface. When the operating member drives the linkage member to open the micro switch, the operating member abuts against the limiting surface, fixing the latch in a state that extends out of the housing.

13. The contact mechanism as described in claim 12, characterized in that, The locking structure also includes a reset member, which is installed between the housing and the locking part to drive the card head to extend out of the housing.

14. The contact mechanism as described in claim 13, characterized in that, The locking structure also includes a transmission block, and the end of the reset member away from the housing is connected to the transmission block. The transmission block and the locking part are connected by a beveled engagement.

15. The contact mechanism as described in claim 2, characterized in that, It also includes an indicator light, which is used to indicate the open or closed state of the contact mechanism, and the operating component includes a light guide post, which is disposed opposite to the indicator light.

16. A power distribution box, characterized in that, The device includes a housing and a contact mechanism as described in any one of claims 1 to 15, wherein the housing is provided with a frame, the contact mechanism is inserted into the frame, and the contact mechanism is used to electrically connect to the power supply terminal of the power distribution system.

17. A power distribution system, characterized in that, It includes a power supply terminal and a power distribution box as described in claim 16, wherein the power distribution box is electrically connected to the power supply terminal.

Images