An electrical component

Abstract

The present invention provides an electrical component, comprising a shell, a contact component arranged in the shell, and a limiting structure fixed relatively to the shell, wherein the contact component comprises: a static contact, a moving contact, and a contact support portion providing support for the moving contact, the limiting structure can contact or separate from the moving contact, after the moving contact and the static contact are disconnected, the moving contact moves linearly for a distance driven by the contact support portion and then contacts the limiting structure, and rotates under the joint action of the limiting structure and the contact support, the present invention can increase the contact opening distance of the electrical component with a single breakpoint structure, and enhance the arc extinguishing capability of the electrical component.

Description

Technical Field

[0001] The invention relates to the technical field of low-voltage electrical appliances, and in particular to an electrical appliance component. Background Art

[0002] Electrical components are an important part of the circuit structure. By controlling electrical components, the switching, control, protection and detection of the circuit are realized. Electrical components include contactors and relays, etc., which usually generate magnetic fields by flowing current into the coil to close the contacts to control the load. In electrical components, the contact opening distance is a relatively important parameter. The larger the contact opening distance, the longer the arc generated by the contact breaking is pulled, and the better the arc extinguishing effect of the product. At present, the contact composition of electrical components mostly adopts two structures: bridge-type double breakpoint and single breakpoint. The electrical components of the bridge-type double breakpoint structure have reliable performance, but are expensive and require too much contact material, especially for high-current electrical components (current>32A). The contact material is generally silver alloy, and the material cost is high. For single-breakpoint electrical components, only one contact can be set on each contact, which reduces the material cost. At present, the contacts of common single-breakpoint electrical components are generally direct-acting and rotating. Among them, direct-acting contacts have the following two defects: one is that the contact opening distance is small and the arc extinguishing ability is poor; the other is that the contact opening distance is large enough and the arc extinguishing effect is good, but the contact needs to move a long distance, that is, the required electromagnetic opening distance is large, a larger coil is required, and more electromagnetic coil materials are required, thereby increasing the cost of electromagnetic coil materials. Rotary contacts are generally driven by a rotating iron core, which is usually set on one side of the moving contact, increasing the width of the electrical component, resulting in a large volume of the electrical component and increased material costs. Summary of the invention

[0003] The object of the present invention is to provide an electrical component to increase the contact opening distance of the electrical component with a single breakpoint structure and enhance the arc extinguishing capability of the electrical component.

[0004] In order to achieve the above purpose, the present invention discloses an electrical component, including a shell, a contact assembly arranged in the shell, and a limiting structure fixed relatively to the shell, the contact assembly includes: a static contact, a moving contact and a contact support portion providing support for the moving contact, the limiting structure can contact or separate from the moving contact, after the moving contact and the static contact are disconnected, the moving contact moves linearly for a distance under the drive of the contact support portion and then contacts the limiting structure, and rotates under the joint action of the limiting structure and the contact support portion.

[0005] Preferably, the rotating angle range of the moving contact is 5 to 45°.

[0006] Preferably, the electrical component further comprises a conductive terminal block, and the moving contact is connected to the conductive terminal block via a flexible connecting wire.

[0007] Preferably, the electrical component further comprises a support structure;

[0008] When the moving contact moves toward the stationary contact, the support structure limits one end of the moving contact so that the moving contact and the stationary contact are closed.

[0009] Preferably, the electrical component further comprises a conductive terminal block, and the movable contact is connected to the conductive terminal block via a flexible connecting wire;

[0010] The supporting structure is formed by extending the housing or the conductive wire holder.

[0011] Preferably, the support structure is formed by extending the conductive terminal seat, a first contact point is formed at one end of the support structure in contact with the moving contact, and a second contact point corresponding to the first contact point is formed on the moving contact.

[0012] Preferably, the distance between the limiting point where the limiting structure can contact the moving contact and the supporting structure minus the thickness of the moving contact at the contact position with the limiting point is smaller than the minimum distance of linear movement of the connection between the moving contact and the contact support portion.

[0013] Preferably, the contact supporting portion includes an actuating portion in contact with the moving contact and an elastic component connected to a side of the moving contact away from the actuating portion.

[0014] Preferably, the elastic component comprises a spring seat and a spring body, wherein one end of the spring seat is connected to the spring body, and the other end is connected to the moving contact.

[0015] Preferably, the connection fit between the moving contact and the spring seat is a curved surface fit.

[0016] Preferably, the contact between the moving contact and the actuating portion is plane contact, curved surface contact or line contact.

[0017] Preferably, the moving contact is a sheet-like structure, and at least two bosses are formed on the contact support portion, and the at least two bosses form a gap for accommodating the moving contact.

[0018] Preferably, the limiting structure is formed of an elastic material or a non-elastic material.

[0019] Preferably, the limiting structure is a cylindrical, strip or sheet structure.

[0020] Preferably, the cross-section of the limiting structure is circular, rectangular, trapezoidal, triangular, elliptical or irregular polygonal.

[0021] Preferably, it further comprises an electromagnetic assembly disposed in the housing, the electromagnetic assembly comprising a coil, a static iron core, a moving iron core and a reverse spring, the moving iron core being fixedly connected to the contact support portion;

[0022] When current flows through the coil, the moving iron core moves in a first direction and exerts a force on the contact support portion;

[0023] When the current in the coil is disconnected, the reverse spring drives the moving iron core to move in the opposite direction of the first direction and exerts a force on the contact support portion.

[0024] The electrical component of the present invention is provided with a limit structure, and the contact support part can drive the moving contact to move back and forth. During the movement of the moving contact, one end of the moving contact is stopped by the limit blocking effect of the limit structure, and when the moving contact continues to move under the drive of the electromagnetic component, the moving contact will rotate around the limited end, so that the opening distance between the other end of the moving contact and the static contact becomes larger, which can improve the arc extinguishing effect. The electrical component of the present invention adopts a single breakpoint structure, which saves the contact cost, can achieve a good arc extinguishing effect without increasing the electromagnetic component and product cost, and increases the electrical life of the electrical product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram showing a first embodiment of an electrical component of the present invention;

[0027] Figure 2 A schematic diagram showing the structure of a second embodiment of an electrical component of the present invention;

[0028] Figure 3 A structural schematic diagram of a third embodiment of an electrical component of the present invention is shown.

[0029] Reference numerals:

[0030] 110, actuating portion, 120, moving contact, 130, limiting structure, 131, limiting point, 140, flexible connecting wire, 150, static contact, 160, supporting structure, 170, conductive terminal seat, 180, spring body, 190, spring seat;

[0031] 220, moving contact, 240, flexible connecting wire, 250, stationary contact, 260, supporting structure, 270, conductive terminal block;

[0032] 310. Contact support portion, 311. Boss, 320. Moving contact, 330. Limiting structure, 331. Limiting point, 340. Flexible connecting wire, 350. Static contact, 360. Support structure, 370. Conductive terminal block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0034] Embodiment 1

[0035] like Figure 1 As shown, this embodiment discloses an electrical component. In this embodiment, the electrical component can be used as a contactor. The electrical component includes a housing, a contact assembly arranged in the housing, and a limiting structure 130 fixed relative to the housing. Among them, the contact assembly includes a stationary contact 150, a moving contact 120, and a contact support portion that provides support for the moving contact. The contact support portion can drive the moving contact 120 to move, the limiting structure 130 can contact or separate from the moving contact 120, and after the moving contact 120 and the stationary contact 150 are disconnected, the moving contact 120 moves linearly for a distance driven by the contact support portion and then contacts the limiting structure 130, and rotates under the joint action of the limiting structure 130 and the contact support, that is, the limiting structure 130 limits one end of the moving contact 120 so that the moving contact 120 rotates under the action of the contact support portion so that the end of the moving contact 120 disconnected from the stationary contact 150 is away from the stationary contact 150. In order to facilitate processing, the housing may include a base, a pedestal, and a surface cover plate arranged on the outside of the base and the pedestal to provide support and protection for the internal contact assembly and the limiting structure 130. Of course, in practical applications, the housing may also adopt other structural forms, and the present invention is not limited to this.

[0036] The contact support part can drive the moving contact 120 to move back and forth. During the movement of the moving contact 120, one end of the moving contact 120 is stopped by the limiting blocking effect of the limiting structure 130. When the moving contact 120 continues to move driven by the contact support part, the moving contact 120 rotates around the limited end, so that the opening distance between the other end of the moving contact 120 and the static contact 150 becomes larger, which can improve the arc extinguishing effect and increase the electrical life of the electrical product. The electrical component of the present invention adopts a single breakpoint structure, saves contact cost, and can achieve a good arc extinguishing effect, solving the problem that the traditional single breakpoint electrical component needs to increase the electromagnetic opening distance, contact pressure, electromagnetic reaction force, etc. to improve the arc extinguishing effect, which leads to an increase in the cost of the electromagnetic component and the product.

[0037] In a preferred embodiment, the rotation range of the moving contact 120 can be controlled by setting the position of the limiting structure 130 and the movable range of the contact support portion. Preferably, the rotation range of the moving contact 120 can be set to 5 to 45°, so that there is a sufficiently large contact opening distance between the moving contact 120 and the static contact 150, thereby enhancing the arc extinguishing effect when the moving contact 120 and the static contact 150 are disconnected and improving the electrical life of the product. More preferably, the rotation range of the moving contact 120 can be set to between 10 and 20° to achieve a better arc extinguishing effect.

[0038] In an optional embodiment, in order to realize the electrical connection between the moving contact 120 and the external circuit, the electrical component may further include a conductive wiring seat 170 electrically connected to the external circuit, and the moving contact 120 may be electrically connected to the conductive wiring seat 170 through a flexible connection line 140 to be electrically connected to the external circuit. One end of the moving contact 120 corresponding to the limiting structure 130 is welded to one end of the flexible connection line 140, and the other end of the flexible connection line 140 is connected to the conductive wiring seat. When the moving contact 120 and the static contact 150 are closed, the moving contact 120 and the wiring seat are electrically conductive through the flexible connection line 140. When the moving contact 120 and the static contact 150 are opened, no arc is generated between the moving contact 120 and the wiring seat due to the connection of the flexible connection line 140, ensuring that the arc is only generated at the other end separated from the static contact 150, and safe disconnection can be achieved by only eliminating the arc at the disconnection point between the moving contact 120 and the static contact 150.

[0039] As a preferred implementation, in this embodiment, the electrical component further includes a support structure 160 corresponding to the limiting structure 130. When the moving contact 120 moves toward the static contact 150 under the force of the contact support, the support structure 160 can support and limit one end of the moving contact 120 so that the moving contact 120 is closed with the static contact 150 under the driving action of the contact support. Optionally, the support structure 160 can be formed of an insulating material. In order to save process and improve structural stability, the support structure 160 can be formed by extending the shell. For example, the support structure 160 can be molded together with the shell by integral injection molding. Of course, the support structure 160 can also be molded first and then fixed to the shell. It can be flexibly arranged according to actual conditions, and the present invention is not limited to this.

[0040] In a preferred embodiment, the limiting structure 130 includes a limiting point 131 in contact with the moving contact 120, and the moving contact 120 can reciprocate under the drive of the contact support portion, so the point of action on the moving contact 120 that is acted upon by the force can move within the moving range, that is, the distance between the limiting point at which the limiting structure 130 can contact the moving contact 120 and the support structure minus the thickness of the moving contact 120 at the position where the moving contact 120 contacts the limiting point is less than the minimum distance of the linear movement of the connection between the moving contact 120 and the contact support portion, then the mapping of the limiting point 131 in the moving direction of the moving contact 120 needs to be within the movable range. After one end of the moving contact 120 is limited by the limiting structure 130, the moving contact 120 can continue to move to cause the moving contact 120 to rotate around one end of the moving contact 120, increase the opening distance between the moving contact 120 and the static contact 150, and thus improve the arc extinguishing effect. Correspondingly, the support structure 160 includes a support point in contact with the moving contact 120, and the mapping of the support point in the moving direction of the moving contact 120 is preferably located within the movable range, so that when the moving contact 120 is closed with the static contact 150, the support structure 160 can form support for one end of the moving contact 120, and the moving contact 120 can continue to move to cause the moving contact 120 to rotate around the supported end of the moving contact 120 or not rotate and directly contact the static contact 150, thereby causing the moving contact 120 to be in close contact with the static contact 150, thereby improving the stability of the electrical operation.

[0041] In a preferred embodiment, the contact support portion includes an actuating portion 110 in contact with the moving contact 120 and an elastic component connected to a side of the moving contact 120 away from the actuating portion 110, and the elastic component can apply contact pressure to the moving contact 120 to cause the moving contact 120 to move toward the direction close to the stationary contact. The contact between the moving contact 120 and the surface of the actuating portion 110 can be a plane contact, a curved surface contact or a line contact, and the space formed between the moving contact 120, the actuating portion 110 and the elastic component can be a clearance fit or a transition fit, so as to realize the supporting function of the contact support portion on the moving contact.

[0042] In a preferred embodiment, the elastic component may include a spring seat 190 and a spring body 180, wherein one end of the spring seat 190 is connected to the spring body 180, and the other end is connected to the moving contact 120. More preferably, the connection mating surface between the moving contact 120 and the spring seat 190 may be a curved surface mating, such as an arc surface and a spherical surface mating, so as to realize a rotatable connection between the spring seat 190 and the moving contact 120.

[0043] In a preferred embodiment, the electrical component may include an electromagnetic component that drives the contact support part to move, so that the contact support part can further drive the moving contact 120 to move. The electromagnetic component may include a coil, a static iron core, a moving iron core and a reverse spring. The static iron core and the coil may be relatively fixed to the housing, and the moving iron core is relatively fixed to the moving contact 120. When current is passed through the coil, the moving iron core moves relative to the static iron core under the action of the magnetic field of the static iron core, and the movement of the moving iron core can drive the contact support part to move, thereby driving the moving contact 120 relatively fixed to the moving iron core to move to achieve the closing or disconnection of the moving contact 120 and the static contact 150. When the current in the coil is disconnected, the magnetic field force on the moving iron core disappears, the reverse spring drives the moving iron core to move in the opposite direction, and the movement of the moving iron core drives the contact support part to move, thereby driving the moving contact 120 to move in the opposite direction, so that the contact state of the moving contact 120 and the static contact 150 changes.

[0044] In an optional embodiment, a moving contact point for contacting the stationary contact 150 may be formed on the moving contact 120, and correspondingly, a stationary contact point for contacting the moving contact point may be formed on the stationary contact 150, so as to achieve good electrical contact between the stationary contact 150 and the moving contact 120 and ensure stable operation of the electrical appliance.

[0045] In a preferred embodiment, the surface where the static contact 150 contacts the moving contact 120 can be set to have a certain slope, and the slope range is preferably 0-10° relative to the horizontal plane. In this embodiment, the static contact 150 is at an angle of 10° to the horizontal plane, which can form an optimal angle when the contact is disconnected to spray the arc, and the arc can be transferred and extinguished more quickly.

[0046] It should be noted that the limiting structure 130 is relatively fixed to the housing to limit the position of the moving contact 120. The limiting structure 130 and the housing can be integrally formed, or can be formed first and then fixed to the housing. For example, the limiting structure 130 can be fixed to the housing by screws, buckles, inlays, bonding or welding, and the present invention does not limit this. The limiting structure 130 can be an elastic member formed of materials such as a spring sheet, a rubber rod, etc., or a non-elastic member formed of materials such as a plastic part, a metal part, etc.

[0047] The limiting structure 130 may be a strip structure or a cylindrical structure with one end fixed on the housing. The strip structure or cylindrical structure may be a structure that is narrow at the top and wide at the bottom, or a structure that has equal widths at the top and bottom. The cross-sectional shape of the limiting structure 130 may be circular, rectangular, triangular, or irregular polygonal, etc., as long as it can conflict with the moving contact 120, and no limitation is made here. Preferably, the surface of the limiting structure 130 that contacts the moving contact 120 has a certain slope, and the slope range is roughly the same as the angle range of the moving contact 120, so as to reduce the friction loss on the contact surface during contact and improve the service life.

[0048] The electrical component of this embodiment includes two processes during operation, one of which is the disconnection process of the moving contact and the static contact. Figure 1 , the current on the coil of the electromagnetic component is disconnected, the electromagnetic force between the static iron core and the moving iron core disappears, and the moving iron core moves upward under the elastic force of the reaction spring. The movement of the moving iron core drives the actuating part 110 to move, and the actuating part 110 contacts the moving contact 120. The actuating part 110 drives the moving contact 120 to move upward and disconnect from the static contact 150. After the moving contact 120 moves linearly for a distance driven by the contact support part, one end of the moving contact 120 reaches the limiting structure 130, and the moving contact 120 continues to move. One end of the moving contact 120 contacts the limiting point 131 of the limiting structure 130, so that one end of the moving contact 120 is limited at the limiting point 131, and the actuating part 110 continues to drive the moving contact 120 to move. Then, the two ends of the moving contact 120 are subjected to unbalanced force, causing the moving contact 120 to rotate away from the static contact 150, so that the distance between the other end of the moving contact 120 and the static contact 150 is increased, which can effectively extinguish the arc.

[0049] The other process is the closing process of the moving contact and the stationary contact, see again Figure 1, the current is passed through the coil of the electromagnetic component, and an electromagnetic force is formed between the static iron core and the moving iron core. The moving iron core moves downward, driving the actuating part 110 to move downward. Under the joint action of the elastic component, the moving contact 120 moves linearly downward. When the moving contact 120 reaches the limiting structure, the limiting structure 130 no longer plays a limiting role, and the moving contact 120 continues to move downward, and the direction of the moving contact 120 gradually changes to the horizontal direction. When one end of the moving contact 120 reaches the supporting structure 160, the moving contact 120 continues to move downward, and one end of the moving contact 120 contacts the supporting point of the supporting structure 160, so that one end of the moving contact 120 is limited at the supporting point. Then, the two ends of the moving contact 120 are subjected to unbalanced forces, causing the moving contact 120 to rotate toward the static contact 150 until it contacts and closes with the static contact 150. The moving iron core can further move downward until the supporting surface of the actuating portion 110 leaves the moving contact 120 , a gap is formed between the two, the actuating portion 110 exceeds the stroke, and the moving contact 120 and the stationary contact 150 complete the closing.

[0050] Embodiment 2

[0051] like Figure 2 As shown, this embodiment discloses another electrical component. The electrical component in this embodiment can be used as a contactor. In this embodiment, the electrical component includes a support structure 260 arranged corresponding to the limiting structure. When the moving contact 220 moves toward the static contact 250 under the action of the contact support portion, the support structure 260 can limit one end of the moving contact 220 so that the moving contact 220 is closed with the static contact 250 under the action of the contact support portion.

[0052] In this embodiment, in order to achieve electrical connection between the moving contact 220 and the external circuit, the electrical component further includes a conductive terminal block 270 electrically connected to the external circuit. The moving contact 220 can be electrically connected to the conductive terminal block 270 through a flexible connecting wire 240 to be electrically connected to the external circuit.

[0053] In this embodiment, the support structure 260 is formed by extending the conductive wire holder 270. Figure 2Preferably, the conductive terminal holder 270 is arranged horizontally, and the conductive terminal holder 270 may include a horizontal main body and a support structure 260 extending vertically from the edge of the main body relative to the main body. With the conductive terminal holder 270 of this embodiment, when the static contact 250 and the moving contact 220 are closed, the support structure 260 contacts the moving contact 220, and the support structure 260 can share part of the current with the flexible connection line 240. The advantage of such a design is that during the product attraction process, according to the principle of current shunting between the flexible connection line 240 and the support structure 260, the wire diameter of the flexible connection line 240 can be reduced, so that the flexible connection line 240 is more flexible and its mechanical life is improved. When the static contact 250 and the moving contact 220 are separated, the support structure 260 is separated from the moving contact 220, and an arc is generated at the end where the static contact 250 and the moving contact 220 are in contact, while no arc is generated at the end where the support structure 260 and the moving contact 220 are in contact. The other structures in this embodiment are similar to the structures of the electrical components in the first embodiment and will not be described in detail here.

[0054] Embodiment 3

[0055] like Figure 3 As shown, this embodiment discloses another electrical component. The electrical component in this embodiment can be used as an electromagnetic relay, specifically, can be used as a magnetic holding relay. The electrical component of this embodiment includes a contact assembly, an electromagnetic assembly and a limiting structure 330. The contact assembly includes a static contact 350, a moving contact 320 and a contact support portion 310 that provides support for the moving contact, and the contact support portion 310 is further connected to the electromagnetic assembly. The contact support portion 310 can move under the force of the electromagnetic assembly and drive the moving contact 320 to move, and the limiting structure 330 limits one end of the moving contact 320 so that the moving contact 320 can rotate away from the static contact 350 under the action of the contact support portion 310. The electrical component also includes a support structure 360 ​​arranged corresponding to the limiting structure 330. When the moving contact 320 moves toward the stationary contact 350 under the force of the contact support portion 310 , the support structure 360 ​​can limit one end of the moving contact 320 so that the moving contact 320 is closed with the stationary contact 350 under the action of the contact support portion 310 .

[0056] The electromagnetic assembly can drive the contact support part 310 and the moving contact 320 to move back and forth under the change of the external input current. During the movement of the moving contact 320, one end of the moving contact 320 is stopped by the limiting blocking effect of the limiting structure 330, and when the moving contact 320 continues to move under the drive of the contact support part 310, the moving contact 320 will rotate around the limited end, so that the opening distance between the other end of the moving contact 320 and the static contact 350 becomes larger, which can improve the arc extinguishing effect and increase the electrical life of the electrical product. The electrical assembly of the present invention adopts a single breakpoint structure, saves contact cost, and can achieve a good arc extinguishing effect, which solves the problem that the traditional single breakpoint electrical assembly needs to increase the electromagnetic opening distance, contact pressure, electromagnetic reaction force, etc. to improve the arc extinguishing effect, which leads to an increase in the cost of the electromagnetic assembly and the product.

[0057] In this embodiment, a gap for accommodating the moving contact 320 is formed on the contact support portion 310. Preferably, two cylindrical bosses 311 as in this embodiment may be formed on the contact support portion 310, and a gap for accommodating the moving contact 320 may be formed between the two cylindrical bosses 311. The use of the cylindrical bosses 311 to form the gap may also facilitate the rotation of the moving contact 320 and reduce the wear of the moving contact 320. In practical applications, other structures of the actuating portion may also be used, and it is sufficient to form a gap for accommodating the moving contact 320, and the present invention is not limited thereto.

[0058] As a preferred embodiment, the moving contact 320 may be formed of an elastic material, and the shape of the moving contact 320 is preferably a sheet-like structure that is easy to produce elastic deformation.

[0059] The contact support portion 310 of this embodiment does not need to be provided with an elastic component. The contact support portion 310 and the moving contact 320 adopt a transition fit, and the source of the force exerting contact pressure on the moving contact 320 is the deformation of the moving contact 320 itself.

[0060] In order to realize the electrical connection between the moving contact 320 and the external circuit, the electrical component further includes a conductive wiring seat 370 electrically connected to the external circuit, and the moving contact 320 can be electrically connected to the conductive wiring seat 370 through the soft connection line 340 to be electrically connected to the external circuit. In this embodiment, one end of the moving contact 320 corresponding to the static contact 350 is welded to one end of the soft connection line 340, and the other end of the soft connection line 340 is connected to the conductive wiring seat 370. When the moving contact 320 and the static contact 350 are closed, the moving contact 320 and the wiring seat 370 are electrically conductive through the soft connection line 340. When the moving contact 320 and the static contact 350 are opened, no arc is generated between the moving contact 320 and the wiring seat 370 due to the connection of the soft connection line 340, and the arc is only generated between the moving contact 320 and the static contact 350. It is only necessary to eliminate the arc between the moving contact 320 and the static contact 350 to achieve safe disconnection. In other embodiments, considering the position of the conductive terminal holder 370 , one end of the flexible connecting wire 340 may also be welded and fixed to one end of the limiting structure 330 corresponding to the moving contact 320 to achieve electrical connection between the moving contact 320 and the conductive terminal holder 370 .

[0061] The electrical component of this embodiment also includes two processes when working, one of which is the disconnection process of the moving contact and the static contact, see Figure 3 , a positive pulse voltage is applied to the coil of the electromagnetic component, and the moving iron core is subjected to a positive suction force. The moving iron core drives the contact 320 support part 310 to move, and the movement of the contact support part 310 drives the moving contact 320 to move upward. When the moving contact 320 reaches the limiting structure 330, the end of the moving contact 320 corresponding to the limiting structure 330 abuts against the limiting point 331 on the limiting structure 330, and the moving contact 320 is blocked by the limiting structure 330. When the contact support part 310 drives the moving contact 320 to continue to move, the forces on both ends of the moving contact 320 are unbalanced, and the moving contact 320 rotates in the direction away from the static contact 350. The end of the moving contact 320 away from the limiting structure 330 is disconnected from the static contact 350, and the contact opening distance is widened to improve the arc extinguishing capability. The other process is the closing process of the moving contact and the static contact. See again Figure 3 , a reverse pulse voltage is applied to the coil of the electromagnetic component, and the moving iron core is subjected to reverse suction, and the moving iron core drives the contact 320 support part 310 to move, and the movement of the contact support part 310 drives the moving contact 320 to move downward, and the moving contact 320 gradually changes from a rotational direction to a horizontal direction. The contact support part 310 continues to drive the moving contact 320 to move downward, and one end of the moving contact 320 is blocked and supported by the support structure 360. The contact support part 310 continues to move downward, and the center of the moving contact 320 is pulled downward and deformed, generating contact pressure, and the moving contact 320 and the static contact 350 complete the closed state. The other structures in this embodiment are similar to the structures of the electrical components in the first embodiment, and will not be repeated here.

[0062] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An electrical component, characterized in that: The invention comprises a housing, a contact assembly arranged in the housing, and a limiting structure fixed relatively to the housing, wherein the contact assembly comprises: a stationary contact, a moving contact, and a contact support portion for supporting the moving contact, wherein the limiting structure can be in contact with or separated from the moving contact, and after the moving contact and the stationary contact are disconnected, the moving contact moves linearly for a certain distance under the drive of the contact support portion and then contacts the limiting structure, and rotates under the joint action of the limiting structure and the contact support portion; The electrical component further includes a support structure formed of an insulating material; When the moving contact moves toward the stationary contact, the support structure limits one end of the moving contact so that the moving contact and the stationary contact are closed.

2. The electrical component according to claim 1, characterized in that: The rotating angle range of the moving contact is 5 to 45 degrees.

3. The electrical component according to claim 1, characterized in that: The electrical component also includes a conductive wiring seat, and the moving contact is connected to the conductive wiring seat through a flexible connecting wire.

4. The electrical component according to claim 1, characterized in that: The electrical component also includes a conductive terminal block, and the movable contact is connected to the conductive terminal block via a flexible connecting wire; The supporting structure is formed by extending the housing or the conductive wire holder.

5. The electrical component according to claim 4, characterized in that: The support structure is formed by extending the conductive terminal seat, and a first contact point is formed at one end of the support structure in contact with the moving contact, and a second contact point corresponding to the first contact point is formed on the moving contact.

6. The electrical component according to claim 1, characterized in that: The distance between the limiting point where the limiting structure can contact the moving contact and the supporting structure minus the thickness of the moving contact at the position where the moving contact contacts the limiting point is smaller than the minimum distance of linear movement of the connection between the moving contact and the contact support portion.

7. The electrical component according to claim 1, characterized in that: The contact supporting portion includes an actuating portion contacting the moving contact and an elastic component connected to a side of the moving contact away from the actuating portion.

8. The electrical component according to claim 7, characterized in that: The elastic component comprises a spring seat and a spring body, wherein one end of the spring seat is connected to the spring body, and the other end is connected to the moving contact.

9. The electrical component according to claim 8, characterized in that: The connection between the moving contact and the spring seat is a curved surface connection.

10. The electrical component according to claim 7, characterized in that: The contact between the moving contact and the actuating portion is plane contact, curved surface contact or line contact.

11. The electrical component according to claim 1, characterized in that: The moving contact is a sheet-like structure, and at least two bosses are formed on the contact support portion, and the at least two bosses form a gap for accommodating the moving contact.

12. The electrical component according to claim 1, characterized in that: The limiting structure is formed of an elastic material or a non-elastic material.

13. The electrical component according to claim 1, characterized in that: The limiting structure is a cylindrical, strip or sheet structure.

14. The electrical component according to claim 1, characterized in that: The cross section of the limiting structure is circular, rectangular, trapezoidal, triangular, elliptical or irregular polygonal.

15. The electrical component according to any one of claims 1 to 14, characterized in that: It also includes an electromagnetic assembly disposed in the housing, the electromagnetic assembly including a coil, a static iron core, a moving iron core and a reverse spring, the moving iron core being fixedly connected to the contact support portion; When current flows through the coil, the moving iron core moves in a first direction and exerts a force on the contact support portion; When the current in the coil is disconnected, the reverse spring drives the moving iron core to move in the opposite direction of the first direction and exerts a force on the contact support portion.

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