An electric switch

Abstract

The application provides an electric switch, which comprises an insulating shell and an internal element arranged in the insulating shell, and the internal element comprises a movable contact assembly, a static contact assembly and an elastic element; the movable contact assembly comprises a magnetic conductor, a movable conductor and a movable contact point; the elastic element comprises a first end portion and a driving end portion, the first end portion is located above the movable contact point along the Z-axis direction, and the driving end portion is located above the middle part of the movable conductor along the Z-axis direction; the movable contact assembly is provided with a rotating support portion and a linkage portion, the rotating support portion is arranged at the rear or the rear end of the movable conductor along the X direction, the linkage portion is connected with the first end portion, and the driving end portion, the first end portion and the rotating support portion form a right-angle or obtuse-angle triangle; under the premise of ensuring that the elastic element can provide contact pressure, the electric switch realizes the large opening distance between the movable contact assembly and the static contact assembly in the limited movement space of the driving end portion through the displacement amplification principle of the lever.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically to a contact device for an electric switch and an electric switch using the contact device. Background Technology

[0002] With the development of science and technology, the demand for electricity in production and daily life will continue to increase, which will also place increasingly stringent requirements on the safety and reliability of electrical switches.

[0003] As a core component of electrical switches or circuit breakers, the contact device plays a crucial role in the safety and reliability of the electrical switch. In a prior art load switch, the contact device includes a moving contact assembly and a stationary contact assembly. The moving contact assembly utilizes a spring or compression spring to apply a direct downward force from the top of the moving contact, thereby causing the moving contact assembly to rotate reciprocally at its bottom end. Simultaneously, after the load switch is closed, the spring or compression spring applies contact pressure to the top of the moving contact.

[0004] Due to the limited space above the moving contact assembly, and the additional space occupied by the reed and compression spring, the rotatable space of the moving contact assembly is compressed, which in turn reduces the opening distance between the moving contact assembly and the stationary contact assembly, severely affecting the breaking performance of the load switch.

[0005] Therefore, it is necessary to design a contact device with a simple structure, large opening distance, and reliable contact to improve product competitiveness. Summary of the Invention

[0006] Based on the above background, the purpose of this invention is to solve the problem of small product opening distance and to propose a contact device with a large opening distance and reliable contact capability.

[0007] The technical solution adopted in this invention is as follows: an electrical switch, comprising an insulating shell and internal components disposed within the insulating shell, the internal components including a moving contact assembly, a stationary contact assembly, and an elastic element; the moving contact assembly includes a magnetic conductor, a moving conductor, and a moving contact, the moving contact being fixed at the bottom front end of the moving conductor along the X direction, and the magnetic conductor being fixed at the middle of the moving conductor; the elastic element includes a first end and a driving end, the first end being located above the moving contact along the Z-axis, and the driving end being located above the middle of the moving conductor along the Z-axis; the moving contact assembly is provided with a rotating support portion and a linkage portion, the rotating support portion being disposed at the rear or rear end of the moving conductor along the X direction, the linkage portion being connected to the first end, and the driving end, the first end, and the rotating support portion forming a right-angled or obtuse-angled triangle.

[0008] In the above technical solution, the first end of the elastic element is connected to the moving contact assembly, while the driving end is located above the middle of the moving contact assembly, so that the first end of the elastic element, the driving end, and the rotating support part of the moving contact assembly form a triangle. The three form a right angle or obtuse angle triangle, which makes the driving end as close as possible to the middle of the moving contact assembly. Under the premise of ensuring that the elastic element can provide contact pressure, the large opening distance between the moving contact assembly and the stationary contact assembly can be obtained in the limited activity space of the driving end through the displacement amplification principle of the lever.

[0009] Preferably, the magnetic conductor is located between the driving end and the moving conductor and is located below the driving end.

[0010] In the above technical solution, a magnetic conductor is set up in the space between the drive end and the moving conductor. When the electric switch is closed, the electromagnetic force of the magnetic conductor acts on the moving conductor to increase the contact pressure and prevent the moving contact assembly and the stationary contact assembly from repelling each other.

[0011] Preferably, the magnetic conductor extends along the X-axis towards the moving contact to form a U-shaped magnetic blowout structure.

[0012] In the above technical solution, a magnetic blowing structure is added near the moving contact of the magnetic conductor. When the moving contact assembly and the stationary contact assembly break and generate an electric arc, the electric arc can be quickly blown into the arc extinguishing device to accelerate the extinguishing of the electric arc.

[0013] Preferably, the magnetic conductor and / or the moving conductor extend along the X-axis towards the moving contact to form the linkage portion.

[0014] In the above technical solution, the connection between the linkage part of the moving contact assembly and the first end of the elastic element can be provided with a linkage part on the magnetic conductor or the moving conductor or both as needed, to meet the needs of different occasions and increase the adaptability of use.

[0015] Preferably, the magnetic conductor and / or the moving conductor extend along the X-axis away from the moving contact to form the rotating support portion.

[0016] In the above technical solution, the rotating support part of the moving contact assembly is rotatably connected to the shaft on the insulating shell. The rotating support part can be provided on the magnetic conductor or the moving conductor or both as needed to meet the needs of different occasions and increase the adaptability of use.

[0017] Preferably, a magnetically conductive element corresponding to the magnetic conductor is fixedly disposed on the insulating shell, and a cavity for accommodating the moving conductor is provided between the magnetic conductor and the magnetically conductive element.

[0018] In the above technical solution, when the circuit is closed and energized, the cavity between the magnetic conductor and the magnetic body can enclose the moving conductor, and can respond to the magnetic field in time to attract each other, so that the magnetic body can apply pressure to the moving conductor under the action of electromagnetic force.

[0019] Preferably, either the magnetic conductor or the magnetic component is a U-shaped structure, and the other is a U-shaped or planar structure.

[0020] In the above technical solution, the shape of the magnetic conductor and the magnetic component can be adopted as a combination structure of UU, U-, and -U as needed to meet the needs of different occasions and increase the adaptability of use.

[0021] Preferably, the elastic element is an elastic steel wire, a leaf spring, or a spring sheet.

[0022] In the above technical solution, the elastic element can be any of the following: elastic steel wire, leaf spring, or spring sheet, to meet the needs of different occasions and increase the adaptability of use.

[0023] Preferably, the elastic element further includes a second end, the driving end is located between the first end and the second end, the second end is coaxially rotatably disposed with the rotating support, and the first end and / or the second end are slidably connected to the moving contact assembly.

[0024] In the above technical solution, the elastic element adopts a bent structure, and the driving end is located at the bend. When the elastic element undergoes elastic deformation, both ends of the elastic element can slide with the moving contact assembly at either end as needed, so as to better convert the elastic force into contact pressure.

[0025] Preferably, the angle between the lever arm formed by the second end and the driving end and the lever arm formed by the first end and the driving end is an obtuse angle or a right angle.

[0026] In the above technical solution, the driving end serves as a bending inflection point, forming an obtuse or right angle, which satisfies the original design intention of the design scheme: under the premise of ensuring that the elastic element can provide contact pressure, the large opening distance between the moving contact assembly and the stationary contact assembly can be obtained within the limited activity space of the driving end through the displacement amplification principle of the lever.

[0027] Preferably, the first end has a U-shaped or W-shaped structure that overlaps along the Y-axis projection.

[0028] In the above technical solution, the first end is bent into an overlapping structure with a U-shape and a W-shape, which can increase the sliding contact surface between the first end and the moving contact assembly, thereby improving the stability of the sliding fit.

[0029] Preferably, the elastic element is bent into a U-shaped structure along the center, the two ends of the U-shaped structure constitute the second end, the center bend of the U-shaped structure constitutes the first end, and the two arms of the U-shaped structure are parallel and in the same direction, bent at an obtuse angle or a right angle to form the linkage part.

[0030] In the above technical solution, the elastic element is folded into an approximately mirror-image U-shaped structure, with the bending center as the first end, which can increase the sliding contact surface between the first end and the moving contact assembly. At the same time, the second end and the driving end can be equipped with contact points as needed, which not only improves the stability of the sliding fit, but also increases the reliability of the rotational fit and the hinged fit.

[0031] Preferably, the electrical switch further includes an arc-extinguishing device, a drive mechanism, an inlet terminal, an outlet terminal, and a linkage assembly. The drive mechanism is linked to the drive end through the linkage assembly. The outlet terminal is electrically connected to the moving contact assembly, the inlet terminal is electrically connected to the stationary contact assembly, and the arc-extinguishing device is covered by the moving contact assembly.

[0032] In the above technical solution, the working mechanism of the electric switch adopts a drive mechanism that drives the moving contact assembly and the stationary contact assembly to perform closing and opening operations in sequence through the linkage assembly and the elastic element. It is also equipped with an arc extinguishing device, which extinguishes the electric arc between the moving contact assembly and the stationary contact assembly, thereby increasing the safety of the electric switch.

[0033] Preferably, the arc-extinguishing device includes a grid plate, the grid plate having a U-shaped structure, and the U-shaped arms of the grid plate extending to both sides of the moving contact.

[0034] In the above technical solution, the U-shaped extension arm of the grid extends to both sides of the moving contact, which can respond to the magnetic field in time to generate electromagnetic force, causing the electric arc to enter the arc extinguishing device and accelerate the extinguishing of the electric arc.

[0035] Preferably, the electric switch has at least two poles, the linkage assembly includes an output linkage, a pole-splitting linkage, and an input linkage, the pole-splitting linkage is slidably disposed in the insulating housing, the input linkage is hinged to the upper end of the pole-splitting linkage along the Z-axis, and at least two output linkages are hinged side-by-side to the lower end of the pole-splitting linkage along the Z-axis.

[0036] In the above technical solution, the three-pole or multi-pole electric switch is provided with multiple sets of parallel moving contact assemblies and stationary contact assemblies. The pole-splitting linkage connects multiple sets of moving contact assemblies as needed, which can simultaneously drive multiple sets of moving contact assemblies and corresponding stationary contact assemblies to achieve connection or disconnection operations, thereby improving the synchronization of the movement of the moving contact assemblies of the three-pole or multi-pole electric switch.

[0037] Preferably, the input link is hinged to the drive mechanism, and the output link of each pole is hinged to the elastic element of one pole. The drive mechanism drives the pole-splitting link to slide up and down along the Z-axis direction through the input link.

[0038] In the above technical solution, the pole-splitting connecting rod uses sliding to transmit kinetic energy, which can increase the motion reliability of the connecting rod assembly.

[0039] Preferably, the electric switch further includes a signal trigger rod and two output pins. One end of the signal trigger rod is electrically connected to one of the output pins, and the other end of the signal trigger rod is located between the polarity connecting rod and the other output pin along the Z-axis direction.

[0040] In the above technical solution, the combination of the signal trigger rod and the output pin constitutes a position signal device, which has a simple and reliable structure. At the same time, the trigger end of the signal trigger rod is set on the sliding trajectory of the polarity connecting rod, which can output the closing and opening status of the electric switch in real time.

[0041] 1. This application sets the first end of the elastic element, the driving end, and the rotating support part of the moving contact assembly into a triangle, and the three form a right angle or obtuse angle triangle so that the driving end is as close as possible to the middle of the moving contact assembly. Under the premise of ensuring that the elastic element can provide contact pressure, the large opening distance between the moving contact assembly and the stationary contact assembly is achieved by means of the displacement amplification principle of the lever.

[0042] 2. This application, by setting a magnetic conductor and a corresponding magnetic component, utilizes the electromagnetic force of the magnetic conductor to act on the moving contact assembly when the electric switch is closed, thereby increasing the contact pressure, preventing the moving contact assembly and the stationary contact assembly from repelling each other, and ensuring reliable contact.

[0043] 3. This application provides a magnetic blow-out structure on the magnetic conductor, which can quickly blow the electric arc into the arc extinguishing device when the moving contact assembly and the stationary contact assembly break apart and generate an electric arc, thereby accelerating the extinguishing of the electric arc.

[0044] 4. This application achieves a sliding fit between the elastic element and the moving contact assembly. When the elastic element undergoes elastic deformation, both ends of the elastic element can slide with the moving contact assembly at either end as needed, thereby better converting the elastic force into contact pressure.

[0045] 5. This application constructs a position signal device by cooperating the signal trigger rod and the output pin, which has a simple and reliable structure; at the same time, the trigger end of the signal trigger rod is set on the sliding trajectory of the polarity connecting rod, which can output the closing and opening status of the electric switch in real time. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0047] Figure 1 This is a three-dimensional structural diagram of a single-pole switch in the open state according to Embodiment 1 of the present invention; Figure 2 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the arc-extinguishing device according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the planar structure of a single-pole switch in the open state according to Embodiment 1 of the present invention; Figure 5 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 2 of the present invention; Figure 6 This is an exploded view of the moving contact assembly according to Embodiment 2 of the present invention; Figure 7 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 3 of the present invention; Figure 8 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 4 of the present invention; Figure 9 This is an exploded view of the moving contact assembly according to Embodiment 4 of the present invention; Figure 10 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 5 of the present invention; Figure 11 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 6 of the present invention; Figure 12 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 7 of the present invention; Figure 13 This is a three-dimensional structural diagram of the moving contact assembly according to Embodiment 8 of the present invention; Figure 14 This is a schematic diagram of the planar structure of the three-pole switch according to Embodiment 2 of the present invention; Figure 15 This is a three-dimensional structural diagram of a three-pole switch according to Embodiment 2 of the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0049] like Figure 1-13 As shown, an electric switch is a single-pole product, including an inlet terminal 71, an outlet terminal 72, an insulating housing 90, and internal components disposed within the insulating housing 90. The internal components include a moving contact assembly 10, a stationary contact assembly 20, an elastic element 30, a magnetically conductive element 40, a drive mechanism 50, an arc-extinguishing device 60, a connecting rod assembly 80, and a shaft 91. The insulating housing 90 can be insulated and isolated into two cavities along the Z-axis. The upper cavity is a low-voltage cavity, used to house the drive mechanism 50 and other low-voltage control components. The lower cavity is a high-voltage cavity, used to house the moving contact assembly 10, the stationary contact assembly 20, the elastic element 30, the magnetically conductive element 40, the arc-extinguishing device 60, the shaft 91, and other high-voltage circuit components. The connecting rod assembly 80 penetrates both the low-voltage and high-voltage cavities. The inlet terminal 71 and the outlet terminal 72 both penetrate the high-voltage cavity inside the insulating housing 90 and extend to the outside. The drive mechanism 50 sequentially drives the moving contact assembly 10 and the stationary contact assembly 20 to perform closing and opening operations through the connecting rod assembly 80 and the elastic element 30. It is equipped with the arc extinguishing device 60, which extinguishes the electric arc between the moving contact assembly 10 and the stationary contact assembly 20, thereby increasing the safety of the electrical switch.

[0050] The moving contact assembly 10 includes a magnetic conductor 101, a moving conductor 102, a moving contact 103, and a flexible connection 104. The moving contact 103 is fixed to the front end of the moving conductor 102 along the X-axis and the bottom surface along the Z-axis. The magnetic conductor 101 is fixed to the moving conductor 102 and located between the flexible connection 104 and the moving contact 103. One end of the flexible connection 104 is welded to the moving conductor 102, and the other end is electrically connected to the output terminal 72. The magnetic conductor 101 is cleverly arranged in the space between the driving end 302 and the moving conductor 102. When the electrical switch is closed, the electromagnetic force of the magnetic conductor 101 acts on the moving conductor 102 to increase the contact pressure and prevent the moving contact assembly 10 and the stationary contact assembly 20 from repelling each other.

[0051] The moving contact 101 is made of alloy material, which has good conductivity and can reduce product temperature rise. To save costs, the moving contact 101 can be integrally formed from the moving conductor 102, and a material that promotes conductivity can be coated on the contact surface. To reduce temperature rise and save costs, the moving conductor 102 can be omitted, and the other end of the flexible connection 104 can be directly welded to the non-contact surface of the moving contact 101.

[0052] The stationary contact assembly 20 includes a stationary contact 201 and a stationary contact array 202. The stationary contact 201 is made of an alloy material, possessing good conductivity and reducing product temperature rise. The stationary contact array 202 supports the stationary contact 102 and is electrically connected to the inlet terminal 71. To save costs, the stationary contact array 202 can be integrally formed from the inlet terminal 71. In certain cases, the stationary contact 201 can be integrally formed from the stationary contact array 202, in which case the contact surface of the stationary contact array 202 can be coated with a material that promotes conductivity to further save costs.

[0053] The magnetic conductive element 40 is fixedly mounted on the insulating shell 90 corresponding to the magnetic conductive body 101. A cavity for accommodating the moving conductor 102 is provided between the magnetic conductive body 101 and the magnetic conductive element 40. When the moving contact assembly 10 and the stationary contact assembly 20 are closed and energized, a magnetic field is generated. A certain small gap is always maintained between the magnetic conductive body 101 and the magnetic conductive element 40, and they attract each other in a timely manner in response to the magnetic field. Under the action of electromagnetic force, the magnetic conductive body 101 applies downward pressure along the Z-axis to the moving contact 103 through the moving conductor 102, thereby ensuring reliable contact between the moving contact assembly 10 and the stationary contact assembly 20 and preventing repulsion. In the closed and energized state, the cavity between the magnetic conductive body 101 and the magnetic conductive element 40 can enclose the moving conductor 102, and they can attract each other in a timely manner in response to the magnetic field, realizing that the magnetic conductive body 101 applies pressure to the moving conductor 102 under the action of electromagnetic force.

[0054] The moving contact assembly 10 is electrically connected to the output terminal 72, and the stationary contact assembly 20 is electrically connected to the input terminal 71. The moving contact assembly 10 is provided with a rotating support portion 1012 / 1022 and a linkage portion 1013 / 1023. One end of the elastic member 30 is located above the moving contact 103 along the Z-axis and is connected to the linkage portion 1013 / 1023. The rotating support portion 1012 / 1022 is connected to the shaft 91.

[0055] like Figure 4 , 14As shown, the driving mechanism 50 includes a motor 501, a gear set 502, and an output disk 503. When the motor 501 is energized, it sequentially drives the gear set 502 and the output disk 503 to rotate. The output disk 503 is hinged to one end of the connecting rod assembly 80, and the other end of the connecting rod assembly 80 is hinged to the elastic element 30. The driving mechanism 50 is linked to the elastic element 30 via the connecting rod assembly 80. The driving mechanism 50 can sequentially drive the moving contact assembly 10 to rotate back and forth around the rotating support 1012 / 1022 as the rotation center via the connecting rod assembly 80 and the elastic element 30, thereby connecting or disconnecting the moving contact assembly 10 and the stationary contact assembly 20. The arc-extinguishing device 60 can extinguish the electric arc generated between the moving contact assembly 10 and the stationary contact assembly 20 when they are disconnected.

[0056] like Figure 1 , 3 As shown in Figures 4 and 15, the arc-extinguishing device 60 includes grid plates 601 and insulating walls 602, with a plurality of grid plates 601 fixed between two insulating walls 602. Each grid plate 601 includes a main body 6011 and extension arms 6012. The main body 6011 and the two extension arms 6012 form a U-shaped structure. The extension arms 6012 extend to both sides of the moving contact 103, forming a cover for the moving contact assembly 10 by the arc-extinguishing device 60. The U-shaped extension arms of the grid plate 601 extending to both sides of the moving contact 103 can promptly respond to the magnetic field to generate electromagnetic force, causing the electric arc to enter the arc-extinguishing device 60 and accelerating the extinguishing of the arc.

[0057] like Figure 14-15 As shown, the electrical switch is a multi-pole product; a three-pole product is taken as an example. The high-voltage cavity is isolated into three parallel high-voltage chambers along the X-axis, and each high-voltage chamber contains a set of high-voltage circuit components. The low-voltage cavity is isolated into two parallel low-voltage chambers along the Y-axis, one of which is used to house the low-voltage control components such as the drive mechanism 50, and the other is used to house the linkage assembly 80.

[0058] The linkage assembly 80 includes an output linkage 801, a pole-splitting linkage 802, and an input linkage 803. The insulating housing 90 has a guide rail structure along the Z-axis, and the pole-splitting linkage 802 has a corresponding guide structure to cooperate with it, allowing the pole-splitting linkage 802 to be slidably disposed in the insulating housing 90 along the Z-axis. One end of the input linkage 803 is hinged to the output disk 503 of the drive mechanism 50, and the other end is hinged to the upper end of the pole-splitting linkage 802 along the Z-axis. Each pole's... One end of the output link 801 is hinged parallel to the lower end of the pole-splitting link 802 along the Z-axis. The other ends of the three output links 801 are respectively hinged to the elastic elements 30 of different poles. The drive mechanism 50 can drive the pole-splitting link 802 to slide back and forth along the Z-axis through the input link 803, thereby synchronously driving the moving contact assembly 10 of all poles to rotate back and forth around the axis 91 of each pole through the output links 801 and the elastic elements 30 of each stage. The pole-splitting link 802 uses sliding to transmit kinetic energy, which can increase the motion reliability of the link assembly 80.

[0059] The three-pole or multi-pole electric switch is provided with multiple sets of parallel moving contact assemblies 10 and stationary contact assemblies 20. The pole-splitting linkage 802 connects multiple sets of moving contact assemblies 10 as needed, which can simultaneously drive multiple sets of moving contact assemblies 10 and corresponding stationary contact assemblies 20 to perform connection or disconnection operations, thereby improving the synchronicity of the movement of the moving contact assemblies 10 of the three-pole or multi-pole electric switch.

[0060] The insulating housing 90 also includes a position signal device, which comprises a signal trigger rod 92 and two output pins 93. The signal trigger rod 92 is an elastic and conductive filamentary or sheet-like structure. One end of the signal trigger rod 92 is fixed to one of the output pins 93, and the middle part is engaged in a slot in the insulating housing 90. The other end is initially positioned above the other output pin 93 along the Z-axis. The polarity connecting rod 802 has a trigger structure along the X-axis. When the electrical switch is in the initial open state, the triggering structure is located above the other end of the signal trigger rod 92 along the Z-axis direction. The signal trigger rod 92 is separated from the other output pin 93, realizing the output of a switch disconnection signal between the two output pins 93. During the transition of the electrical switch from open to closed, the polarity connecting rod 802 slides downward along the Z-axis direction, and the triggering structure abuts against the other end of the signal trigger rod 92, causing the signal trigger rod 92 to deform. When the electrical switch is about to close or has completed closing, the other end of the signal trigger rod 92 contacts the other output pin 93, realizing the output of a switch connection signal between the two output pins 93. The cooperation of the signal trigger rod 92 and the output pin 93 constitutes the position signal device, which has a simple and reliable structure. At the same time, the trigger end of the signal trigger rod 92 is set on the sliding trajectory of the polarity connecting rod 802, which can output the closing and opening status of the electrical switch in real time.

[0061] Based on the different classifications of the positional relationship of the rotating support parts 1012 / 1022 and the linkage parts 1013 / 1023, as well as the different classifications of the elastic element 30 in terms of material, shape, structure, connection, and fit, and the different classifications of the magnetic conductor 40 and the magnetic conductor 101 in terms of shape and structure, the specific embodiments include, but are not limited to, the following situations.

[0062] like Figure 1-3 As shown, the magnetic conductor 101 includes a magnetic substrate 1010, a magnetic sidewall 1011, a rotating support part 1012, a linkage part 1013, a magnetic suction part 1014, and a magnetic blowing part 1015.

[0063] The magnetically conductive substrate 1010 is fixedly connected to the moving conductor 102 and located at the middle of the moving conductor 102 along the X-axis and the top of the moving conductor 102 along the Z-axis; the two magnetically conductive sidewalls 1011 are connected to the magnetically conductive substrate 1010 to form a U-shaped structure and wrap around the moving conductor 102 downward along the Z-axis; the rotating support part 1012 is formed by extending from the magnetically conductive sidewalls 1011 along the X-axis away from the moving contact 103, and the rotating support part 1012 is provided with a hole-shaped or ring-shaped structure that cooperates with the shaft 91 and is located behind the moving conductor 102 along the X-axis; the linkage part 1013 extends from the magnetically conductive substrate 1010 along the X-axis towards the moving contact 103. The linkage part 1013 includes a limiting boss structure formed by bending upward along the Z-axis and located above the moving contact 103 along the Z-axis. The limiting boss structure has a limiting slot hole, and the elastic member 30 is fixedly connected to the limiting slot hole. The magnetic suction part 1014 is formed by the magnetically conductive sidewall 1011 extending along the Z-axis towards the magnetically conductive member 40. The magnetic blowing part 1015 is a U-shaped structure, which can be formed by the magnetically conductive base 1010 extending along the X-axis towards the moving contact 103 and along the Z-axis towards the moving contact 103, or by the magnetically conductive sidewall 1011 and the magnetically conductive base 1010 simultaneously extending along the X-axis towards the moving contact 103. The magnetic conductor 101 adds a magnetic blowing structure near the moving contact 103. When the moving contact assembly 10 and the stationary contact assembly 20 break and generate an electric arc, the electric arc can be quickly blown into the arc extinguishing device 60 to accelerate the extinguishing of the electric arc.

[0064] The magnetic suction part 1014 and the magnetic blowing part 1015 can be added or removed as needed, which will not be described in detail here.

[0065] Since the magnetic conductive element 40 and the magnetic conductive body 101 are respectively provided with cavities to accommodate the moving conductor 102, and a small gap needs to be maintained between them to ensure a sufficiently large electromagnetic attraction when the electrical switch is closed, either the magnetic conductive body 101 or the magnetic conductive element 40 must be a U-shaped structure, and the other can also be a U-shaped structure, thus forming a double-U combination with openings facing each other; the other can also be a flat straight line, thus forming a single-U combination with U-shaped openings approximately closed. This embodiment is a typical single-U combination, that is, the magnetic conductive body 101 is a U-shaped structure and the magnetic conductive element 40 is a single-U structure. Other combination structures can achieve the same technical effect and can be adapted as needed, which will not be elaborated here. The shapes of the magnetic conductive body 101 and the magnetic conductive element 40 can adopt UU, U-, and -U combination structures as needed to meet the needs of different occasions and increase the adaptability of use.

[0066] The elastic element 30 is an elastic steel wire, which can be integrally wound. The elastic element 30 includes a first end 301 and a driving end 302. The first end 301 and the driving end 302 have a straight structure. The first end 301 is fixedly connected to the limiting slot on the linkage part 1013 and is located above the moving contact 103 along the Z-axis direction; the driving end 302 has a hole-shaped or ring-shaped structure that is hinged to the connecting rod assembly 80 and is located above the middle of the moving conductor 102 along the Z-axis direction.

[0067] The magnetic substrate 1010 of the magnetic conductor 101 is located between the driving end 302 and the moving conductor 102 and is located below the driving end 302 along the Z-axis. The driving end 302, the first end 301 and the rotating support 1012 can form a right-angled or obtuse-angled triangle, with the driving end 302 being the right-angled vertex or the obtuse-angled vertex.

[0068] The first end 301 of the elastic element 30, the driving end 302, and the rotating support portion 1012 / 1022 of the moving contact assembly 10 form a triangle. The three of them form a right-angled or obtuse triangle, which makes the driving end 302 as close as possible to the middle of the moving contact assembly 10. Under the premise of ensuring that the elastic element 30 can provide contact pressure, the large opening distance between the moving contact assembly 10 and the stationary contact assembly 20 can be obtained under the limited activity space of the driving end 302.

[0069] like Figure 4-6 As shown, the difference between this embodiment and Embodiment 1 is that: The elastic element 30 includes a first end 301, a driving end 302, and a second end 303. The driving end 302 is located between the first end 301 and the second end 303. The first end 301 and the second end 303 form a bent structure with the driving end 302 as the only bending point. The angle between the lever arm formed by the second end 303 and the driving end 302 and the lever arm formed by the first end 301 and the driving end 302 is an obtuse angle or a right angle. The driving end 302 serves as a bending point, forming an obtuse or right angle, which satisfies the design intent of the design scheme: under the premise of ensuring that the elastic element 30 can provide contact pressure, a large opening distance between the moving contact assembly 10 and the stationary contact assembly 20 is obtained within the limited movement space of the driving end 302 through the displacement amplification principle of the lever.

[0070] The first end 301 is slidably connected to the limiting slot on the linkage part 1013; the second end 303 is provided with a hole-shaped or ring-shaped structure that is coaxially rotatable with the rotating support part 1012.

[0071] When the electrical switch is closed, the elastic element 30 undergoes elastic deformation, and the first end 301 slides in the limiting slot on the linkage part 1013.

[0072] like Figure 7 As shown, the difference between this embodiment and Embodiment 2 is that: The rotating support portion 1012 is formed by the magnetic conductive substrate 1010 extending away from the moving contact 103 along the X-axis, and the rotating support portion 1012 is provided with a shaft hole-like structure that cooperates with the shaft 91.

[0073] This configuration achieves the same technical effect as in Embodiment 2. It can be adapted as needed. Other structures are the same as in Embodiment 2 and will not be described again here. like Figure 8-9 As shown, the difference between this embodiment and embodiments two and three is that:

[0074] The second end 303 is provided with an oval hole or strip-shaped ring structure that is coaxially rotatable with the rotary support 1012 and can be slidably engaged.

[0075] When the electrical switch is open, the elastic element 30 does not undergo elastic deformation, and the shaft 91 is located at position 91a of the second end 303; when the electrical switch is closed, the elastic element 30 undergoes elastic deformation, and the second end 303 slides along the shaft 91, at which time the shaft 91 is located at position 91b of the second end 303.

[0076] The first end 301 can be fixedly connected to the limiting slot on the linkage part 1013, or it can be slidably connected. When the first end 301 is fixedly connected to the linkage part 101, only one end of the second end 303 slides due to elastic deformation; when the first end 301 is slidably connected to the linkage part 101, both ends of the first end 301 and the second end 303 slide simultaneously due to elastic deformation.

[0077] The elastic element 30 adopts a bent structure, and the driving end 302 is located at the bend. When the elastic element 30 undergoes elastic deformation, both ends of the elastic element 30 can slide with the moving contact assembly 10 at either end as needed, so as to better convert the elastic force into contact pressure.

[0078] This configuration can achieve the same technical effects as in Embodiments 2 and 3. It can be adapted as needed. Other structures are the same as in Embodiments 2 and 3, and will not be described again here.

[0079] like Figure 10 As shown, the difference between this embodiment and embodiments one through four is that: The magnetic conductor 101 does not include the rotating support part 1012 and the linkage part 1013.

[0080] The moving conductor 102 includes a conductive substrate 1021, a rotating support portion 1022, and a linkage portion 1023. The magnetically conductive substrate 1010 is fixedly connected to the conductive substrate 1021 and located at the middle of the conductive substrate 1021 along the X-axis and at the top of the conductive substrate 1021 along the Z-axis. Two magnetically conductive sidewalls 1011 enclose the conductive substrate 1021. The rotating support portion 1022 extends from the conductive substrate 1021 along the X-axis away from the moving contact 103. The rotating support portion 1022 has a hole-like or ring-like structure that mates with the shaft 91 and is located at the rear end of the conductive substrate 1021 along the X-axis. It is used as needed to connect the magnetically conductive substrate 1021 to the moving contact 1023. The magnet 101 is provided with, or the moving conductor 102 is provided with, or both are provided with, the rotating support portion 1012 / 1022 to meet the needs of different occasions and increase the adaptability of use; the linkage portion 1023 is formed by extending the conductive base 1021 along the X-axis towards the moving contact 103 and located above the moving contact 103 along the Z-axis. The linkage portion 1013 / 1023 is provided on the magnetic conductor 101, or on the moving conductor 102, or both are provided with, to meet the needs of different occasions and increase the adaptability of use. The linkage portion 1023 includes a limiting boss structure formed by bending upward along the Z-axis. The limiting boss structure has a limiting slot hole, and the elastic member 30 is fixedly connected to the limiting slot hole.

[0081] Of course, the rotating support part 1012 / 1022 and the linkage part 1013 / 1023 can also be respectively provided on the magnetic conductor 101 or the moving conductor 102.

[0082] This configuration can achieve the same technical effect as embodiments one to four. It can be adapted as needed. Other structures are the same as embodiments one to four, and will not be described again here.

[0083] like Figure 11 As shown, the difference between this embodiment and embodiments two to five is that: To increase the stability of the sliding fit between the first end 301 and the linkage part 1013, the first end 301 is provided with a U-shaped or W-shaped structure that overlaps along the Y-axis projection, and the U-shaped or W-shaped structure and the linkage part 1013 are in a multi-faceted sliding fit.

[0084] The first end 301 is bent into an overlapping structure with a U-shape and a W-shape, which can increase the sliding contact surface between the first end 301 and the moving contact assembly 10, thereby improving the stability of the sliding fit.

[0085] This configuration can achieve the same technical effect as embodiments two to five. It can be adapted as needed. Other structures are the same as embodiments two to five, and will not be described again here.

[0086] like Figure 12 As shown, the difference between this embodiment and embodiments two to five is that: To increase the stability of the sliding engagement between the first end 301 and the linkage part 1013, the elastic member 10 is bent along the center into a completely mirrored or partially mirrored U-shaped structure. The two U-shaped ends of the elastic member 10 constitute the second end 303, the U-shaped bottom of the elastic member 10 constitutes the first end 301, and the U-shaped arms of the elastic member 10 are bent in parallel and in the same direction at obtuse or right angles to form the linkage part 1013.

[0087] The elastic element 30 is folded into an approximately mirror-image U-shaped structure, with the bending center serving as the first end 301. This increases the sliding contact surface between the first end 301 and the moving contact assembly 10. Meanwhile, the second end 303 and the driving end 302 can be equipped with additional contact points as needed, which not only improves the stability of the sliding fit but also increases the reliability of the rotational fit and the hinged fit.

[0088] This configuration can achieve the same technical effect as embodiments two to five. It can be adapted as needed. Other structures are the same as embodiments two to five, and will not be described again here.

[0089] like Figure 13 As shown, the difference between this embodiment and embodiments one through seven is that: The elastic element 30 is a leaf spring or a spring sheet, which can be integrally stamped. The elastic element 30 can be made of any one of elastic steel wire, leaf spring, or spring sheet to meet the needs of different occasions and increase its adaptability.

[0090] The first end portion 301 includes an end base 3012 and a positioning boss 3011. To increase the stability of the sliding engagement between the first end portion 301 and the linkage portion 1013, the end base 3012 is formed by bending the elastic member 30 directly along the Y-axis to create a wider sliding engagement contact surface with the linkage portion 1013; the positioning boss 3011 extends from the end base 3012 along the X-axis towards the moving contact 103, and the positioning boss 3011 is fixedly or slidably connected to the limiting slot on the linkage portion 1013 and is located above the moving contact 103 along the Z-axis.

[0091] This configuration can achieve the same technical effect as embodiments one to seven. It can be adapted as needed. Other structures are the same as embodiments one to seven, and will not be described again here.

[0092] This invention may be implemented in other specific forms without departing from its spirit and essential characteristics. The present embodiments are to be regarded in all respects as exemplary rather than limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications falling within the meaning of the claims and their equivalents are thus included within the scope of the invention.

Claims

1. An electrical switch, comprising an insulating housing and internal components disposed within the insulating housing, the internal components comprising a moving contact assembly, a stationary contact assembly, and an elastic element, the moving contact assembly comprising a magnetic conductor, a moving conductor, and a moving contact, the moving contact being fixed to the bottom of the front end of the moving conductor along the X-axis, the magnetic conductor being fixed to the middle portion of the moving conductor, the elastic element comprising a first end and a driving end, the first end being located above the moving contact along the Z-axis, the driving end being located above the middle portion of the moving conductor along the Z-axis, the moving contact assembly being provided with a rotating support portion and a linkage portion, the rotating support portion being disposed behind or at the rear end of the moving conductor along the X-axis, the linkage portion being connected to the first end, characterized in that: The driving end, the first end, and the rotating support form a right-angled or obtuse-angled triangle.

2. An electrical switch according to claim 1, characterized in that: The magnetic conductor is located between the driving end and the moving conductor and is located below the driving end.

3. An electrical switch according to claim 1, characterized in that: The magnetic conductor extends along the X-axis towards the moving contact to form a U-shaped magnetic blowout structure.

4. An electrical switch according to claim 1, characterized in that: The magnetic conductor and / or the moving conductor extend along the X-axis toward the moving contact to form the linkage.

5. An electrical switch according to claim 1, characterized in that: The magnetic conductor and / or the moving conductor extend along the X-axis away from the moving contact to form the rotating support portion.

6. An electrical switch according to claim 1, characterized in that: A magnetically conductive component corresponding to the magnetic conductor is fixedly disposed on the insulating shell, and a cavity for accommodating the moving conductor is provided between the magnetic conductor and the magnetically conductive component.

7. An electrical switch according to claim 6, characterized in that: Either the magnetic conductor or the magnetic component has a U-shaped structure, and the other has a U-shaped or planar structure.

8. An electrical switch according to claim 1, characterized in that: The elastic element is an elastic steel wire, a leaf spring, or a spring sheet.

9. An electrical switch according to any one of claims 1-8, characterized in that: The elastic element further includes a second end, the driving end is located between the first end and the second end, the second end is coaxially rotatably disposed with the rotating support, and the first end and / or the second end are slidably connected to the moving contact assembly.

10. An electrical switch according to claim 9, characterized in that: The angle between the lever arm formed by the second end and the driving end and the lever arm formed by the first end and the driving end is an obtuse angle or a right angle.

11. An electrical switch according to claim 9, characterized in that: The first end has a U-shaped or W-shaped structure that overlaps along the Y-axis projection.

12. An electrical switch according to claim 9, characterized in that: The elastic element is bent into a U-shaped structure along the center, the two ends of the U-shaped structure form the second end, the center bend of the U-shaped structure forms the first end, and the two arms of the U-shaped structure are parallel and in the same direction, bent at an obtuse angle or a right angle to form the linkage part.

13. An electrical switch according to claim 1, characterized in that: The electrical switch also includes an arc-extinguishing device, a drive mechanism, an inlet terminal, an outlet terminal, and a linkage assembly. The drive mechanism is linked to the drive end through the linkage assembly. The outlet terminal is electrically connected to the moving contact assembly, and the inlet terminal is electrically connected to the stationary contact assembly. The arc-extinguishing device is covered by the moving contact assembly.

14. An electrical switch according to claim 13, characterized in that: The arc-extinguishing device includes a grid plate, which has a U-shaped structure, and the U-shaped arms of the grid plate extend to both sides of the moving contact.

15. An electrical switch according to claim 13, characterized in that: The electrical switch has at least two poles, and the linkage assembly includes an output linkage, a pole-splitting linkage, and an input linkage. The pole-splitting linkage is slidably disposed in the insulating housing, and the input linkage is hinged to the upper end of the pole-splitting linkage along the Z-axis. At least two of the output linkages are hinged side-by-side to the lower end of the pole-splitting linkage along the Z-axis.

16. An electrical switch according to claim 15, characterized in that: The input link is hinged to the drive mechanism, and the output link of each pole is hinged to the elastic element of one pole. The drive mechanism drives the pole-splitting link to slide up and down along the Z-axis direction through the input link.

17. An electrical switch according to claim 15, characterized in that: The electrical switch also includes a signal trigger rod and two output pins. One end of the signal trigger rod is electrically connected to one of the output pins, and the other end of the signal trigger rod is located between the polarity connecting rod and the other output pin along the Z-axis direction.

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