Bidirectional holding circuit breaker

Abstract

A bidirectional holding circuit breaker relates to the low-voltage electrical field. The utility model provides a bidirectional holding circuit breaker. The bidirectional holding circuit breaker comprises an operation button, a bidirectional magnetic holding mechanism and an operation mechanism which are sequentially arranged side by side, one side of the bidirectional magnetic holding mechanism is in transmission connection with the operation button, and the other end is in transmission connection with the operation mechanism; the operating mechanism comprises a moving contact group and a static contact group which can be in contact with or separated from the moving contact group, and the moving contact group is in transmission connection with the bidirectional magnetic holding mechanism; the bidirectional magnetic holding mechanism can be driven by electromagnetic force or an operation button to enable the moving contact group to move towards the static contact group, and provides magnetic holding force to enable the moving contact group and the static contact group to be in contact and closed. According to the two-way holding circuit breaker, parts of a manual opening and closing operation device and parts of an electric opening and closing operation device can be combined together through the two-way magnetic holding mechanism, the occupied space of the two operation devices is saved, the product structure is more compact, and the space utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical equipment, and in particular to a bidirectional holding circuit breaker. Background Art

[0002] Circuit breakers are commonly used devices in electrical equipment. In addition to their control function, they also have certain protection functions. They are widely used in the incoming and outgoing lines of low-voltage power distribution systems at all levels, power supply control of various mechanical equipment, and control and protection of power terminals.

[0003] The opening and closing of a circuit breaker can usually be achieved by manual operation and electric operation respectively. The operating device for manual opening and closing and the operating device for electric opening and closing are each equipped with independent components. The two operating devices are arranged side by side up and down and hinged to each other, which occupies a large space and reduces space utilization. Utility Model Content

[0004] The purpose of the utility model is to provide a bidirectional holding circuit breaker, which can combine the components of a manual opening and closing operating device and an electric opening and closing operating device together through a bidirectional magnetic holding mechanism, thereby saving the space occupied by the two operating devices, making the product structure more compact and improving space utilization.

[0005] The embodiment of the utility model is achieved as follows:

[0006] One aspect of the utility model provides a bidirectional holding circuit breaker, comprising an operating button, a bidirectional magnetic holding mechanism and an operating mechanism which are arranged in parallel in sequence; one end of the bidirectional magnetic holding mechanism is transmission-connected to the operating button, and the other end is transmission-connected to the operating mechanism; the operating mechanism comprises a moving contact group and a stationary contact group which can contact or separate from the moving contact group, and the moving contact group is transmission-connected to the bidirectional magnetic holding mechanism; the bidirectional magnetic holding mechanism can be driven by electromagnetic force or the operating button to move the moving contact group toward the stationary contact group, and provide a magnetic holding force to make the moving contact group contact with the stationary contact group for closing.

[0007] Optionally, the bidirectional magnetic holding mechanism includes a transmission shaft, a yoke, a magnet, and a moving iron core that can move laterally; the magnet is fixedly mounted inside the yoke, the moving iron core is passed through the transmission shaft and accommodated in the yoke, and the transmission shaft partially extends out of the yoke to be connected to the moving contact group in transmission; a closing static iron core is provided at one end of the yoke close to the operating mechanism, and an opening static iron core is provided at the other end away from the operating mechanism; the moving iron core can be driven by electromagnetic force to drive the transmission shaft to move laterally, and remain attracted to the closing static iron core or the opening static iron core to provide a magnetic holding force that causes the moving contact group to contact or separate from the static contact group.

[0008] Optionally, a portion of the transmission shaft extending toward the operating button extends out of the yoke and is provided with a blocking piece, and an end of the operating button close to the transmission shaft is provided with a connecting groove corresponding to the blocking piece, and the blocking piece is arranged in the connecting groove.

[0009] Optionally, the transmission shaft extends out of the yoke on one side toward the operating mechanism and is provided with a through hole; the bidirectional magnetic holding mechanism is transmission connected to the operating mechanism through a connecting rod, and the end of the connecting rod away from the through hole is transmission connected to the contact bracket of the moving contact group, and the end close to the through hole is inserted into the through hole.

[0010] Optionally, the blocking piece is disposed in the connecting groove and can slide transversely in the connecting groove, and the idle travel of the blocking piece in the connecting groove is 1-3 mm.

[0011] Optionally, the bidirectional holding circuit breaker also includes an integrated circuit, which includes a PCB board and a shunt arranged on the PCB board, one end of the shunt is electrically connected to the moving contact group, and the other end is connected to the incoming port of the bidirectional holding circuit breaker.

[0012] Optionally, the integrated circuit also includes a control unit arranged on the PCB board, and the control unit is electrically connected to the bidirectional magnetic holding mechanism and the shunt respectively, and the shunt can measure the current value when the moving contact group and the static contact group are combined; when the current value exceeds the instantaneous protection threshold of the bidirectional holding circuit breaker, the control unit can send an electrical signal to the bidirectional magnetic holding mechanism to drive the moving iron core to move toward the opening static iron core to separate the moving contact group and the static contact group.

[0013] Optionally, the integrated circuit also includes an electronic microswitch electrically connected to the control unit; the connecting rod is inserted into the through hole and partially extends out of the through hole to correspond to the setting position of the electronic microswitch, and when the moving iron core moves toward the closing static iron core to drive the transmission shaft to move, the connecting rod can abut against the electronic microswitch to turn on the control unit.

[0014] Optionally, the transmission shaft partially extends out of the yoke on one side facing the operating mechanism, and a protrusion is connected to the end of the transmission shaft, and the cross-sectional area of ​​the protrusion facing the transmission shaft is larger than the cross-sectional area of ​​the transmission shaft facing the protrusion; the through hole is arranged on the protrusion.

[0015] Optionally, the bidirectional holding circuit breaker further comprises an arc extinguishing system, and the arc extinguishing system is arranged on a side of the operating mechanism away from a side of the bidirectional magnetic holding mechanism.

[0016] The beneficial effects of the utility model include:

[0017] The present application provides a two-way holding circuit breaker, including an operating button, a two-way magnetic holding mechanism and an operating mechanism arranged side by side in sequence; one side of the two-way magnetic holding mechanism is transmission-connected to the operating button, and the other end is transmission-connected to the operating mechanism; the operating mechanism includes a moving contact group and a stationary contact group that can contact or separate from the moving contact group, and the moving contact group is transmission-connected to the two-way magnetic holding mechanism; the two-way magnetic holding mechanism can be driven by electromagnetic force or the operating button to move the moving contact group toward the stationary contact group, and provide a magnetic holding force to make the moving contact group contact and close the stationary contact group. The two-way holding circuit breaker obtained by the above design can combine the parts of the manual opening and closing operating device and the electric opening and closing operating device together through the two-way magnetic holding mechanism, saving the space occupied by the two operating devices, making the product structure more compact, and improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 One of the structural schematic diagrams of the bidirectional holding circuit breaker provided in the embodiment of the utility model;

[0020] Figure 2 The second structural schematic diagram of the bidirectional holding circuit breaker provided by the embodiment of the utility model;

[0021] Figure 3 This is an enlarged view of the details at A;

[0022] Figure 4 A schematic diagram of the structure of a bidirectional magnetic latching mechanism provided in an embodiment of the utility model;

[0023] Figure 5 A cross-sectional view of a bidirectional magnetic latching mechanism provided in an embodiment of the utility model;

[0024] Figure 6 The third structural schematic diagram of the bidirectional holding circuit breaker provided in the embodiment of the utility model.

[0025] Icons: 100-bidirectional holding circuit breaker; 101-housing; 110-operating button; 111-connecting slot; 120-bidirectional magnetic holding mechanism; 121-transmission shaft; 1211-blocking piece; 1212-protrusion; 1213-through hole; 122-yoke; 1221-yoke skeleton; 1222-yoke end plate; 123-magnetic steel; 124-moving iron core; 125-closing static iron core; 126-opening static iron core; 127-coil; 130-operating mechanism; 131-moving contact group; 1311-contact bracket; 1312-moving contact; 132-static contact group; 140-PCB board; 141-shunt; 142-electronic micro switch; 150-incoming port; 160-connecting rod; 170-arc extinguishing system. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Please refer to Figure 1 The present embodiment provides a bidirectional holding circuit breaker 100, comprising an operation button 110, a bidirectional magnetic holding mechanism 120 and an operation mechanism 130 arranged in parallel in sequence; one end of the bidirectional magnetic holding mechanism 120 is transmission-connected to the operation button 110, and the other end is transmission-connected to the operation mechanism 130; the operation mechanism 130 comprises a moving contact group 131 and a stationary contact group 132 capable of contacting or separating with the moving contact group 131, and the moving contact group 131 is transmission-connected to the bidirectional magnetic holding mechanism 120; the bidirectional magnetic holding mechanism 120 can be driven by an electromagnetic force or the operation button 110 to move the moving contact group 131 toward the stationary contact group 132, and provide a magnetic holding force to make the moving contact group 131 contact with the stationary contact group 132 for closing.

[0033] It should be noted that, first, Figure 2As shown, the present application provides a bidirectional holding circuit breaker 100, including a housing 101, an operating button 110, a bidirectional magnetic holding mechanism 120 and an operating mechanism 130 arranged side by side in sequence in the housing 101, wherein one end of the operating button 110 extends out of the housing 101 so that an operator can push the operating button 110; one side of the bidirectional magnetic holding mechanism 120 is transmission-connected to the operating button 110, and the other side is transmission-connected to the operating mechanism 130. The bidirectional magnetic holding mechanism 120 can drive the moving contact group 131 and the stationary contact group 132 of the operating mechanism 130 to close by a manual opening and closing operation mode, specifically, by pushing the operating button 110 to drive the moving contact group 131 of the operating mechanism 130 to move toward the stationary contact group 132 and contact with the stationary contact group 132 to close; or, the bidirectional magnetic holding mechanism 120 can also drive the moving contact group 131 and the stationary contact group 132 of the operating mechanism 130 to close by an electric opening and closing operation mode, specifically, the electromagnetic force generated by the constant current passed through the bidirectional holding circuit breaker 100 causes the bidirectional magnetic holding mechanism 120 to drive the moving contact group 131 to move toward the stationary contact group 132, so that the moving contact group 131 and the stationary contact group 132 are in contact and closed.

[0034] The manual opening and closing operating device and the electric opening and closing operating device of the existing circuit breaker are usually arranged independently, and the two operating devices are each arranged with independent parts, so they occupy a large space, reducing the space utilization rate. The bidirectional holding circuit breaker 100 provided in the present application, by making the operating button 110, the bidirectional magnetic holding mechanism 120 and the operating device arranged side by side in sequence and transmission connected, the manual opening and closing operating device and the electric opening and closing operating device are combined into a whole through the bidirectional magnetic holding mechanism 120, which saves the space occupied by the two operating devices, makes the product structure more compact, and improves the space utilization rate.

[0035] Second, the bidirectional magnetic holding mechanism 120 can be driven by electromagnetic force or the operating button 110 to move the moving contact group 131 toward the stationary contact group 132. When the moving contact group 131 contacts the stationary contact group 132, the bidirectional magnetic holding mechanism 120 can simultaneously use its internal magnetic force to provide magnetic holding force to ensure that the moving contact group 131 and the stationary contact group 132 are stably closed when contacting.

[0036] The present application provides a bidirectional holding circuit breaker 100, comprising an operation button 110, a bidirectional magnetic holding mechanism 120 and an operating mechanism 130 arranged side by side in sequence; one side of the bidirectional magnetic holding mechanism 120 is transmission-connected to the operation button 110, and the other end is transmission-connected to the operating mechanism 130; the operating mechanism 130 comprises a moving contact group 131 and a stationary contact group 132 capable of contacting or separating with the moving contact group 131, and the moving contact group 131 is transmission-connected to the bidirectional magnetic holding mechanism 120; the bidirectional magnetic holding mechanism 120 can be driven by electromagnetic force or the operation button 110 to make the moving contact group 131 move toward the stationary contact group 132, and provide a magnetic holding force to make the moving contact group 131 contact and close with the stationary contact group 132. The bidirectional holding circuit breaker 100 obtained by the above design can combine the parts of the manual opening and closing operating device and the electric opening and closing operating device together through the bidirectional magnetic holding mechanism 120, saving the space occupied by the two operating devices, making the product structure more compact, and improving the space utilization.

[0037] For example, Figure 4 and Figure 5 As shown, the bidirectional magnetic holding mechanism 120 includes a transmission shaft 121 capable of lateral movement, a yoke 122, a magnet 123, and a moving iron core 124; the magnet 123 is fixedly mounted inside the yoke 122, the moving iron core 124 is passed through the transmission shaft 121 and accommodated in the yoke 122, and the transmission shaft 121 partially extends out of the yoke 122 to be transmission-connected with the moving contact group 131; the end of the yoke 122 close to the operating mechanism 130 is provided with a closing static iron core 125, and the end away from the operating mechanism 130 is provided with an opening static iron core 126; the moving iron core 124 can be driven by electromagnetic force to drive the transmission shaft 121 to move lateraly, and maintain attraction with the closing static iron core 125 or the opening static iron core 126 to provide a magnetic holding force that causes the moving contact group 131 to contact or separate with the static contact group 132.

[0038] Specifically, Figure 4 and Figure 5 As shown, the bidirectional magnetic holding mechanism 120 includes a yoke 122, and the yoke 122 includes two yoke frames 1221 and two yoke end plates 1222. The two yoke frames 1221 are arranged relatively spaced apart, and the two yoke end plates 1222 are respectively assembled on the ends of the two yoke frames 1221 and fixed to form a cavity; the middle parts of the two yoke end plates 1222 are respectively provided with coaxially arranged through holes for installing the transmission shaft 121, and the two ends of the transmission shaft 121 respectively pass through the through holes and can move laterally along the through holes; the magnet 123 is fixed inside the yoke 122, and the moving iron core 124 passes through the transmission shaft 121 and is accommodated in the cavity, and the cavity is also provided with a coil 127 clamped in the magnet 123.

[0039] A closing static iron core 125 and an opening static iron core 126 are respectively provided on the side where the two yoke end plates 1222 are close to each other, wherein the closing static iron core 125 is provided at one end of the bidirectional magnetic holding mechanism 120 close to the operating mechanism 130, and the opening static iron core 126 is provided at one end of the bidirectional magnetic holding mechanism 120 away from the operating mechanism 130. The yoke 122, the magnetic steel 123 and the closing static iron core 125 can form a closing magnetic circuit. When the bidirectional magnetic holding mechanism 120 is driven by the electromagnetic force or the operating button 110, the transmission shaft 121 can drive the moving iron core 124 to move toward the side close to the operating mechanism 130, and make the moving iron core 124 magnetically attracted to the closing static iron core 125 to provide a closing magnetic holding force; or, when the bidirectional magnetic holding mechanism 120 is driven by the electromagnetic force or the operating button 110, the transmission shaft 121 can drive the moving iron core 124 to move toward the side away from the operating mechanism 130, and make the moving iron core 124 magnetically attracted to the opening static iron core 126 to provide an opening magnetic holding force. The closing magnetic holding force or the opening magnetic holding force can make the closing or opening process of the moving contact group 131 and the static contact group 132 more stable and reliable.

[0040] Optionally, a portion of the transmission shaft 121 extending toward the operating button 110 extends out of the yoke 122 and is provided with a blocking piece 1211 , and an end of the operating button 110 close to the transmission shaft 121 is provided with a connecting groove 111 corresponding to the blocking piece 1211 , and the blocking piece 1211 is arranged in the connecting groove 111 .

[0041] Specifically, Figure 3 and Figure 4 As shown, the transmission shaft 121 extends out of the yoke 122 at one side facing the operation button 110, and a baffle 1211 is sleeved on the end of the transmission shaft 121, and the baffle 1211 is protruded on the surface of the transmission shaft 121; the operation button 110 is partially arranged in the housing 101 of the two-way holding circuit breaker 100 to be close to the two-way magnetic holding mechanism 120; the operation button 110 is provided with a connecting groove 111 at one end close to the transmission shaft 121, and the shape and structure of the connecting groove 111 correspond to the baffle 1211, and the baffle 1211 can be arranged in the connecting groove 111, so that the transmission shaft 121 is connected to the operation button 110 in a transmission manner. When the operation button 110 is pushed, the transmission shaft 121 can be driven to move horizontally, thereby driving the moving contact group 131 and the static contact group 132 connected to the other side of the transmission shaft 121 to contact and close.

[0042] It should be noted that the installation method of the two-way holding circuit breaker 100 can be plug-in, and the two-way holding circuit breaker 100 can be inserted into the frame; when the moving contact group 131 and the static contact group 132 are disconnected, in order to facilitate the reliable removal of the two-way holding circuit breaker 100 from the frame, the connecting groove 111 can have a sufficient length along the extension direction of the transmission shaft 121, so that the blocking piece 1211 can be movably arranged in the connecting groove 111; the blocking piece 1211 is arranged in the connecting groove 111 and can slide horizontally in the connecting groove 111, and the idle travel of the blocking piece 1211 sliding in the connecting groove 111 is 1-3mm. Such a setting method can ensure that the transmission shaft 121 will not be displaced during the process of removing the two-way holding circuit breaker 100 from the frame, which will cause the moving contact group 131 and the static contact group 132 to be re-closed, thereby improving the safety and reliability of the disassembly and assembly process.

[0043] For example, Figure 4 As shown, the transmission shaft 121 extends out of the yoke 122 on one side toward the operating mechanism 130 and is provided with a through hole 1213; the bidirectional magnetic holding mechanism 120 is transmission-connected to the operating mechanism 130 via a connecting rod 160, and the end of the connecting rod 160 away from the through hole 1213 is transmission-connected to the contact bracket 1311 of the moving contact group 131, and the end close to the through hole 1213 is passed through the through hole 1213.

[0044] Specifically, Figure 2 , Figure 4 and Figure 6 As shown, the transmission shaft 121 extends a yoke 122 toward one side of the operating mechanism 130 so as to be connected to the operating mechanism 130. A through hole 1213 is provided at the end of the transmission shaft 121 toward the operating mechanism 130. The through hole 1213 is a through hole 1213. The bidirectional magnetic holding mechanism 120 is connected to the operating mechanism 130 through a connecting rod 160. One end of the connecting rod 160 is bent to pass through the through hole 1213, and the other end is connected to a contact bracket 1311 of the moving contact group 131. The contact bracket 1311 is provided with a moving contact 1312, and the contact bracket 1311 can drive the moving contact 1312 to approach or move away from the stationary contact group 132.

[0045] Among them, the through hole 1213 has a certain length along the extension direction of the transmission shaft 121, so that the end of the connecting rod 160 can slide in the through hole 1213, so as to ensure that the connecting rod 160 can provide sufficient contact pressure when the moving contact group 131 and the static contact group 132 are opened or closed, so as to ensure the reliability of opening or closing.

[0046] For example, the bidirectional holding circuit breaker 100 also includes an integrated circuit, which includes a PCB board 140 and a shunt 141 arranged on the PCB board 140, one end of the shunt 141 is electrically connected to the moving contact group 131, and the other end is connected to the input port 150 of the bidirectional holding circuit breaker 100.

[0047] It should be noted that if Figure 1 As shown, first, the integrated circuit includes a shunt 141, which is arranged on a PCB board 140; the bidirectional holding circuit breaker 100 is also provided with an incoming line port 150, one end of the shunt 141 is electrically connected to the moving contact group 131, and the other end is welded to the plug-in board of the incoming line port 150 of the bidirectional holding circuit breaker 100, so as to realize the electrical connection of the bidirectional holding circuit breaker 100.

[0048] Second, the integrated circuit also includes a control unit arranged on the PCB board 140, and the control unit is electrically connected to the bidirectional magnetic holding mechanism 120 and the shunt 141 respectively, and the shunt 141 can measure the current value when the moving contact group 131 and the static contact group 132 are closed; when the moving contact group 131 and the static contact group 132 are closed, when a current with a large current value passes through the circuit, the shunt 141 can measure the current value, and the control unit can calibrate and judge, when the current value exceeds the instantaneous protection threshold of the bidirectional holding circuit breaker 100, the control unit can send an electrical signal to the bidirectional magnetic holding mechanism 120 to drive the moving iron core 124 to move toward the opening static iron core 126 to separate the moving contact group 131 and the static contact group 132, and keep the bidirectional holding circuit breaker 100 in the opening state. Through such a setting, the safety and reliability of the bidirectional holding circuit breaker 100 can be improved, and the bidirectional holding circuit breaker 100 can be prevented from being damaged due to excessive instantaneous current value.

[0049] Third, if Figure 6 As shown, the integrated circuit also includes an electronic micro switch 142 electrically connected to the control unit; one end of the connecting rod 160 is bent to penetrate into the through hole 1213 and partially extend out of the through hole 1213 to correspond to the setting position of the electronic micro switch 142. When the moving iron core 124 moves toward the closing static iron core 125 to drive the transmission shaft 121 to move, the connecting rod 160 can abut against the electronic micro switch 142 to turn on the control unit. When the moving contact group 131 and the static contact group 132 are closed, the transmission shaft 121 can drive the connecting rod 160 to move toward the static contact group 132, so that the part of the connecting rod 160 extending out of the through hole 1213 abuts against the electronic micro switch 142 to turn on the control unit, thereby improving the safety and reliability of the two-way holding circuit breaker 100 and preventing the two-way holding circuit breaker 100 from being damaged due to excessive instantaneous current value.

[0050] Fourth, the integrated circuit can have multiple functions, such as remotely controlling the opening or closing of the moving contact group 131 and the static contact group 132 of the operating mechanism 130, monitoring the electric energy in the electrical circuit, monitoring the temperature rise, energy efficiency feedback, etc., which improves the functional diversity of the two-way holding circuit breaker 100. Optionally, an indicator light is provided on the PCB board 140, and the indicator light is exposed at the side edge of the housing 101 of the two-way holding circuit breaker 100. The operator can understand whether the two-way holding circuit breaker 100 is currently in the opening state or the closing state through the lighting color of the indicator light.

[0051] Optionally, the transmission shaft 121 partially extends out of the yoke 122 on one side facing the operating mechanism 130, and a protrusion 1212 is connected to the end of the transmission shaft 121, and the cross-sectional area of ​​the protrusion 1212 on the side facing the transmission shaft 121 is larger than the cross-sectional area of ​​the transmission shaft 121 on the side facing the protrusion 1212; a through hole 1213 is arranged on the protrusion 1212.

[0052] Specifically, the end of the transmission shaft 121 is connected with a protrusion 1212, which may be a cylindrical structure. The cross-sectional area of ​​the protrusion 1212 is larger than the cross-sectional area of ​​the transmission shaft 121, so that the transmission shaft 121 forms a step-like structure at the protrusion 1212, and a through hole 1213 is provided on the protrusion 1212, and the connecting rod 160 is passed through the protrusion 1212 through the through hole 1213. The protrusion 1212 is located on the side of the transmission shaft 121 subjected to radial force. When the moving contact group 131 and the static contact group 132 of the operating mechanism 130 are closed, the provision of the protrusion 1212 can prevent the transmission shaft 121 from deforming and causing unstable closing, thereby improving the closing stability and reliability of the bidirectional holding circuit breaker 100.

[0053] In one possible implementation mode of the present application, the bidirectional holding circuit breaker 100 further includes an arc extinguishing system 170, which is disposed on one side of the operating mechanism 130 away from the bidirectional magnetic holding mechanism 120. When the moving contact group 131 and the stationary contact group 132 are closed or opened, an arc may be generated. The arc extinguishing system 170 is disposed on the side of the operating mechanism 130 away from the bidirectional magnetic holding mechanism 120, so that the arc can reliably enter the arc extinguishing system 170 and be extinguished, thereby reducing the possibility of burning the moving contact group 131 and the stationary contact group 132, and improving the safety and reliability of the bidirectional holding circuit breaker 100.

[0054] In addition, the bidirectional holding circuit breaker 100 may also be provided with an arc striking structure, which is arranged on the side of the arc extinguishing port of the arc extinguishing system 170 close to the operating mechanism 130 to introduce the arc into the arc extinguishing system 170, thereby improving the arc extinguishing efficiency.

[0055] The bidirectional holding circuit breaker 100 may also be provided with an armature protection structure, which includes a stationary armature and a moving armature. The stationary armature is fitted with the stationary contact group 132 and is fixed in the housing 101 of the bidirectional holding circuit breaker 100, and the moving armature can rotate relative to the stationary armature. When the current in the electrical circuit increases and the electromagnetic field increases to a certain extent, the stationary armature attracts the moving armature, thereby driving the moving contact group 131 to separate from the stationary contact group 132, thereby playing a role of instantaneous short-circuit protection and improving the safety and reliability of the bidirectional holding circuit breaker 100.

[0056] The above description is only an optional embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

Claims

1. A two-way holding circuit breaker, characterized in that: The invention comprises an operating button (110), a bidirectional magnetic holding mechanism (120) and an operating mechanism (130) which are arranged in parallel in sequence; one side of the bidirectional magnetic holding mechanism (120) is transmission-connected to the operating button (110), and the other end is transmission-connected to the operating mechanism (130); the operating mechanism (130) comprises a moving contact group (131) and a stationary contact group (132) capable of contacting or separating with the moving contact group (131); the moving contact group (131) is transmission-connected to the bidirectional magnetic holding mechanism (120); the bidirectional magnetic holding mechanism (120) can be driven by an electromagnetic force or the operating button (110) to move the moving contact group (131) toward the stationary contact group (132), and provide a magnetic holding force to make the moving contact group (131) contact with the stationary contact group (132) to close the switch.

2. The bidirectional holding circuit breaker according to claim 1, characterized in that: The bidirectional magnetic holding mechanism (120) comprises a transmission shaft (121) capable of transverse movement, a magnetic yoke (122), a magnetic steel (123), and a moving iron core (124); the magnetic steel (123) is fixedly mounted inside the magnetic yoke (122); the moving iron core (124) is passed through the transmission shaft (121) and accommodated in the magnetic yoke (122); the transmission shaft (121) partially extends out of the magnetic yoke (122) to be transmission-connected with the moving contact group (131); the magnetic yoke (123) is fixedly mounted inside the magnetic yoke (122); the moving iron core (124) is passed through the transmission shaft (121) and is accommodated in the magnetic yoke (122); a portion of the transmission shaft (121) extends out of the magnetic yoke (122) to be transmission-connected with the moving contact group (131); A static iron core (125) for closing the switch is provided at one end of the contact assembly (122) close to the operating mechanism (130), and a static iron core (126) for opening the switch is provided at one end away from the operating mechanism (130); the moving iron core (124) can be driven by electromagnetic force to drive the transmission shaft (121) to move laterally, and remain attracted to the static iron core (125) for closing the switch or the static iron core (126) for opening the switch, so as to provide a magnetic holding force that causes the moving contact group (131) to contact or separate from the static contact group (132).

3. The bidirectional holding circuit breaker according to claim 2, characterized in that: A portion of the transmission shaft (121) extending toward a side of the operating button (110) extends out of the yoke (122) and is provided with a blocking piece (1211); an end of the operating button (110) close to the transmission shaft (121) is provided with a connecting groove (111) corresponding to the blocking piece (1211); and the blocking piece (1211) is arranged in the connecting groove (111).

4. The bidirectional holding circuit breaker according to claim 2, characterized in that: The transmission shaft (121) extends out of the yoke (122) toward one side of the operating mechanism (130) and is provided with a through hole (1213); the bidirectional magnetic holding mechanism (120) is transmission-connected to the operating mechanism (130) via a connecting rod (160); one end of the connecting rod (160) away from the through hole (1213) is transmission-connected to a contact support (1311) of the moving contact group (131), and one end of the connecting rod (160) close to the through hole (1213) is passed through the through hole (1213).

5. The bidirectional holding circuit breaker according to claim 3, characterized in that: The blocking piece (1211) is arranged in the connecting groove (111) and can slide transversely in the connecting groove (111); the idle travel of the blocking piece (1211) when sliding in the connecting groove (111) is 1-3 mm.

6. The bidirectional holding circuit breaker according to claim 4, characterized in that: The bidirectional holding circuit breaker (100) further comprises an integrated circuit, the integrated circuit comprising a PCB board (140) and a shunt (141) arranged on the PCB board (140), one end of the shunt (141) being electrically connected to the moving contact group (131) and the other end being connected to the incoming line port (150) of the bidirectional holding circuit breaker (100).

7. The bidirectional holding circuit breaker according to claim 6, characterized in that: The integrated circuit also includes a control unit arranged on the PCB board (140), the control unit being electrically connected to the bidirectional magnetic holding mechanism (120) and the shunt (141) respectively, the shunt (141) being capable of measuring the current value when the moving contact group (131) and the static contact group (132) are closed; when the current value exceeds the instantaneous protection threshold of the bidirectional holding circuit breaker (100), the control unit is capable of sending an electrical signal to the bidirectional magnetic holding mechanism (120) to drive the moving iron core (124) to move toward the opening static iron core (126) to separate the moving contact group (131) and the static contact group (132).

8. The bidirectional holding circuit breaker according to claim 7, characterized in that: The integrated circuit also includes an electronic microswitch (142) electrically connected to the control unit; the connecting rod (160) is inserted into the through hole (1213) and partially extends out of the through hole (1213) to correspond to the setting position of the electronic microswitch (142); when the moving iron core (124) moves toward the closing static iron core (125) to drive the transmission shaft (121) to move, the connecting rod (160) can abut against the electronic microswitch (142) to turn on the control unit.

9. The bidirectional holding circuit breaker according to claim 4, characterized in that: A portion of the transmission shaft (121) extending toward a side of the operating mechanism (130) extends out of the yoke (122), and a protrusion (1212) is connected to the end of the transmission shaft (121), and a cross-sectional area of ​​the protrusion (1212) on the side facing the transmission shaft (121) is larger than a cross-sectional area of ​​the transmission shaft (121) on the side facing the protrusion (1212); and the through hole (1213) is provided on the protrusion (1212).

10. The bidirectional holding circuit breaker according to claim 1, characterized in that: The bidirectional holding circuit breaker (100) further comprises an arc extinguishing system (170), wherein the arc extinguishing system (170) is arranged on a side of the operating mechanism (130) away from a side of the bidirectional magnetic holding mechanism (120).

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