CN209747352U - electrical appliance assembly - Google Patents

Abstract

The utility model provides an electrical component, including the casing and set up in contact subassembly in the casing and with casing relatively fixed's limit structure, contact subassembly includes: static contact, moving contact and do the moving contact provides the contact support portion of support, limit structure can with the moving contact contacts or separates the moving contact with the static contact disconnection back, the moving contact is in under the drive of contact support portion after one section linear motion distance with limit structure contacts limit structure with the contact supports to rotate under the common effect, the utility model discloses can improve single breakpoint structure electrical components's contact opening distance, promote electrical components's arc extinguishing ability.

Description

Electrical appliance assembly

Technical Field

The utility model relates to a low-voltage apparatus technical field especially relates to an electrical component.

Background

The electrical component is an important component in a circuit structure, switching, control, protection and detection of a circuit are realized by controlling the electrical component, and the electrical component comprises a contactor, a relay and the like, and generally a magnetic field is generated by current flowing into a coil, so that a contact is closed to control the loaded electrical appliance. In the electrical appliance assembly, the contact opening is an important parameter, the larger the contact opening is, the longer the arc generated by the contact breaking is pulled, and the better the arc extinguishing effect of the product is. The contact components of the existing electrical component mostly adopt a bridge type double-breakpoint structure and a single-breakpoint structure, the electrical component of the bridge type double-breakpoint structure is reliable in performance, but is expensive in manufacturing cost, excessive contact materials need to be consumed, particularly, the electrical component with large current (the current is greater than 32A), the contact materials are generally silver alloys, and the material cost is high. For the single-breakpoint electrical appliance assembly, only one contact can be arranged on the contact terminal, so that the material cost is reduced. The contact of the current common single-breakpoint electrical component generally has two types, namely a direct-acting type and a rotary type. Among them, the direct-acting contact has the following two defects: one is that the contact opening distance is small, the arc extinguishing ability is poor; the other is that the contact opening distance is large enough, the arc extinguishing effect is good, but the distance for moving the contact is long, namely the required electromagnetic opening distance is large, a larger coil is required, more electromagnetic coil materials are required, and the material cost of the electromagnetic coil is increased. The rotary type contact is generally driven by a rotary type iron core, and the rotary type iron core is usually arranged on one side of the moving contact, so that the width of an electrical component is increased, the volume of the electrical component is large, and the material cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electrical component to improve single breakpoint structure electrical component's contact opening distance, promote electrical component's arc extinguishing ability.

in order to achieve the above object, the utility model discloses an electrical component, including the casing and set up in contact subassembly in the casing and with casing relatively fixed's limit structure, contact subassembly includes: the limiting structure can be contacted with or separated from the moving contact, after the moving contact is disconnected from the fixed contact, the moving contact moves linearly for a certain distance under the drive of the contact supporting part and then is contacted with the limiting structure, and the limiting structure rotates under the common action of the limiting structure and the contact supporting part.

Preferably, the rotating angle range of the movable contact is 5-45 degrees.

Preferably, the electrical component further comprises a conductive wire holder, and the moving contact is connected with the conductive wire holder through a flexible connecting wire.

Preferably, the appliance assembly further comprises a support structure;

When the moving contact moves towards the fixed contact, the supporting structure limits one end of the moving contact so that the moving contact and the fixed contact are closed.

Preferably, the electrical component further comprises a conductive wire holder, and the moving contact is connected with the conductive wire holder through a flexible connecting wire;

The support structure is formed by extending the housing or the conductive wire holder.

Preferably, the supporting structure is formed by extending the conductive wire holder, a first contact is formed at one end of the supporting structure, which is in contact with the movable contact, and a second contact corresponding to the first contact is formed on the movable contact.

preferably, the distance between the limit point of the limit structure, which can be contacted with the moving contact, and the support structure minus the thickness of the moving contact at the position contacted with the limit point is smaller than the minimum distance of the linear motion at the connection position of the moving contact and the contact support part.

Preferably, the contact supporting portion includes an actuating portion in contact with the movable contact, and an elastic member connected to a side of the movable contact away from the actuating portion.

Preferably, the elastic assembly includes a spring seat and a spring body, wherein one end of the spring seat is connected to the spring body, and the other end of the spring seat is connected to the movable contact.

Preferably, the movable contact is matched with the spring seat in a curved surface manner.

preferably, the contact between the movable contact and the actuating part is a plane contact, a curved surface contact or a line contact.

preferably, the movable contact is a sheet structure, and at least two bosses are formed on the contact support portion, and form a gap for accommodating the movable contact.

Preferably, the stopper structure is formed of an elastic material or an inelastic material.

Preferably, the limiting structure is a cylindrical, strip-shaped or sheet-shaped structure.

Preferably, the cross section of the limiting structure is circular, rectangular, trapezoidal, triangular, oval or irregular polygonal.

Preferably, the electromagnetic assembly is arranged in the shell and comprises a coil, a static iron core, a movable iron core and a reverse spring, and the movable iron core is fixedly connected with the contact supporting part;

When current is conducted in the coil, the movable iron core moves towards a first direction and acts on the contact supporting part;

When the current in the coil is cut off, the reverse spring drives the movable iron core to move towards the direction opposite to the first direction and forms force action on the contact supporting part.

the utility model discloses a be provided with limit structure among the electrical components, contact supporting part can drive the moving contact and come and go the removal, the moving contact is at the removal in-process, the one end of moving contact receives limit structure's spacing effect of blockking and stops to remove, and when the moving contact continues to remove under the drive of electromagnetic components, the moving contact can be rotated by spacing one end around it to the other end of moving contact and the opening distance grow of static contact can promote the arc extinguishing effect. The utility model discloses an electrical components adopts single breakpoint structure, saves the contact cost, need not to increase electromagnetic components and product cost and can reach good arc extinguishing effect, increases electrical product's electric life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of a first embodiment of an electrical component according to the present invention;

Fig. 2 shows a schematic structural diagram of a second embodiment of an electrical component according to the present invention;

Fig. 3 shows a schematic structural diagram of a third embodiment of an electrical component according to the present invention.

Reference numerals:

110. The device comprises an actuating part 120, a moving contact 130, a limiting structure 131, a limiting point 140, a flexible connecting line 150, a fixed contact 160, a supporting structure 170, a conductive wire holder 180, a spring body 190 and a spring seat;

220. The moving contact 240, the flexible connecting line 250, the static contact 260, the supporting structure 270 and the conductive wire holder;

310. the contact supporting part 311, the boss 320, the moving contact 330, the limiting structure 331, the limiting point 340, the flexible connecting line 350, the static contact 360, the supporting structure 370 and the conductive wire holder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

As shown in fig. 1, the present embodiment discloses an electrical component. In this embodiment, the electrical component may be used as a contactor. The electrical component comprises a shell, a contact component arranged in the shell and a limiting structure 130 fixed relative to the shell. The contact assembly includes a fixed contact 150, a movable contact 120, and a contact support portion for supporting the movable contact. The contact support portion may drive the moving contact 120 to move, the limiting structure 130 may contact or separate from the moving contact 120, and after the moving contact 120 and the static contact 150 are disconnected, the moving contact 120 may move linearly for a certain distance under the driving of the contact support portion and then contact the limiting structure 130, and rotate under the common 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 disconnected end of the moving contact 120 and the static contact 150 is far away from the static contact 150. Wherein, for the convenience of processing, the casing can include base, base and locate the face apron of base and base outside to provide support and protection to inside contact subassembly and limit structure 130, of course, in practical application, the casing also can adopt other structural style, the utility model discloses do not limit to this.

the contact supporting part can drive the moving contact 120 to move back and forth, the moving contact 120 is in the moving process, one end of the moving contact 120 is stopped moving under the limiting and blocking effect of the limiting structure 130, and when the moving contact 120 continues to move under the driving of the contact supporting part, the moving contact 120 can rotate around the limited end, so that the distance between the other end of the moving contact 120 and the static contact 150 is increased, the arc extinguishing effect can be improved, and the electric service life of an electric appliance product is prolonged. The utility model discloses an electrical components adopts single breakpoint structure, saves the contact cost to can reach good arc extinguishing effect, solve traditional single breakpoint electrical components and in order to promote arc extinguishing effect, need improve the problem of the increase of electromagnetism subassembly and product cost that electromagnetism open range, contact pressure, electromagnetism counter-force etc. lead to.

in an optimal implementation manner, the rotation range of the movable 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 movable contact 120 can be set to be 5-45 °, so that a sufficiently large contact separation distance is provided between the movable contact 120 and the fixed contact 150, the arc extinguishing effect when the movable contact 120 and the fixed contact 150 are disconnected is enhanced, the electrical life of a product is prolonged, and more preferably, the rotation range of the movable contact 120 can be set to be 10-20 °, so as to achieve a better arc extinguishing effect.

In an alternative embodiment, in order to electrically connect the movable contact 120 with an external circuit, the electrical component may further include an electrically conductive wire holder 170 electrically connected with the external circuit, and the movable contact 120 may be electrically connected with the electrically conductive wire holder 170 through the flexible connecting wire 140 to electrically connect with the external circuit. One end of the movable contact 120 corresponding to the limiting structure 130 is welded to one end of the flexible connection line 140, the other end of the flexible connection line 140 is connected to the conductive connection base, and when the movable contact 120 and the static contact 150 are closed, the movable contact 120 and the connection base 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 wire holder due to the connection of the flexible connecting wire 140, so that the arc is only generated at the other end separated from the static contact 150, and the safe disconnection can be realized only by eliminating the arc at the disconnection position of the moving contact 120 and the static contact 150.

as a preferred implementation manner, in this embodiment, the electrical component further includes a supporting structure 160 disposed corresponding to the limiting structure 130. When the moving contact 120 moves toward the stationary contact 150 under the force of the contact supporting portion, the supporting structure 160 can support and limit one end of the moving contact 120, so that the moving contact 120 is closed with the stationary contact 150 under the driving action of the contact supporting portion. Optionally, the supporting structure 160 may be formed of an insulating material, and in order to save the process and improve the structural stability, the supporting structure 160 may be formed by extending the casing, for example, the supporting structure 160 may be formed by integrally molding with the casing, and of course, the supporting structure 160 may be formed first and then fixed to the casing, and may be flexibly configured according to the actual situation, which is not limited by the present invention.

In a preferred embodiment, the limiting structure 130 includes a limiting point 131 contacting with the movable contact 120, and the movable contact 120 is driven by the contact support portion to reciprocate, so that an acting point of the movable contact 120, which is acted by a force, can move within a moving range, that is, a distance between the limiting point where the limiting structure 130 can contact with the movable contact 120 and the support structure minus a thickness of the movable contact 120 at a position where the limiting point contacts is smaller than a minimum distance of a linear motion at a connection of the movable contact 120 and the contact support portion, and a mapping of the limiting point 131 in a moving direction of the movable contact 120 needs to be located within the moving range. After one end of the moving contact 120 is limited by the limiting structure 130, the moving contact 120 can continuously move to enable the moving contact 120 to rotate around one end of the moving contact 120, so that the distance between the moving contact 120 and the static contact 150 is increased, and an arc extinguishing effect can be improved. Correspondingly, the supporting structure 160 includes a supporting point in contact with the moving contact 120, and the mapping of the supporting point in the moving direction of the moving contact 120 is preferably located in the movable range, so that when the moving contact 120 and the stationary contact 150 are closed, the supporting structure 160 can support one end of the moving contact 120, and the moving contact 120 can continuously move to cause the moving contact 120 to rotate around the supported end of the moving contact 120 or not to rotate and directly contact with the stationary contact 150, so that the moving contact 120 and the stationary contact 150 are caused to be in close contact, and the working stability of the electrical appliance is improved.

In a preferred embodiment, the contact supporting portion includes an actuating portion 110 contacting the movable contact 120, and an elastic member connected to a side of the movable contact 120 away from the actuating portion 110, and the elastic member can apply a contact pressure to the movable contact 120 to urge the movable contact 120 to move toward the stationary contact. The contact between the movable contact 120 and the surface of the actuating portion 110 may be a plane contact, a curved surface contact or a line contact, and the space formed between the movable contact 120 and the actuating portion 110 and the elastic component may be a clearance fit or a transition fit, so as to realize a supporting function of the contact supporting portion on the movable contact.

In a preferred embodiment, the elastic assembly 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 movable contact 120. More preferably, the connecting mating surface between the movable contact 120 and the spring seat 190 may be a curved surface mating, such as a circular arc surface and a spherical surface mating, so as to realize the rotatable connection between the spring seat 190 and the movable contact 120.

In a preferred embodiment, the electrical component may include an electromagnetic component for driving the contact support to move, so that the contact support may further drive the movable contact 120 to move. The electromagnetic assembly may include a coil, a stationary core, a movable core, and a reverse spring. The stationary core and the coil may be fixed to the housing, and the movable core is fixed to the movable contact 120. When current is applied to the coil, the movable iron core moves relative to the stationary iron core under the action of the magnetic field of the stationary iron core, and the moving of the movable iron core can drive the contact support to move, so as to drive the movable contact 120 fixed relative to the movable iron core to move, thereby implementing the closing or opening of the movable contact 120 and the stationary contact 150. When the current in the coil is cut off, the magnetic field force on the movable iron core disappears, the reverse spring drives the movable iron core to move in the opposite direction, and the movable iron core moves to drive the movable contact supporting part to move so as to drive the movable contact 120 to move in the reverse direction, so that the contact state of the movable contact 120 and the static contact 150 is changed.

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

In a preferred embodiment, the surface of the stationary contact 150 contacting the movable contact 120 may be set to have a certain slope, the slope range is preferably 0-10 ° with respect to the horizontal plane, in this embodiment, the stationary contact 150 forms an included angle of 10 ° with the horizontal plane, which may form an optimal angle when the contact breaks the arc spraying, so as to rapidly transfer and extinguish the arc.

It should be noted that, the limiting structure 130 is fixed to the housing relatively to limit the position of the moving contact 120, the limiting structure 130 and the housing may be integrally formed, or may be formed first and then fixed to the housing, for example, the limiting structure 130 may be fixed to the housing through a screw, a buckle, an inlay, an adhesive, or a welding manner, which is not limited in this disclosure. The position limiting structure 130 may be an elastic member formed by a spring sheet, a rubber rod, or the like, or may be a non-elastic member formed by a plastic member, a metal member, or the like.

The limiting structure 130 may be a strip structure or a cylindrical structure with one end fixed on the housing, the strip structure or the cylindrical structure may be a structure with a narrow top and a wide bottom, or a structure with the same top and bottom width, and the cross-sectional shape of the limiting structure 130 may be a shape such as a circle, a rectangle, a triangle, or an irregular polygon, as long as it can be abutted against the moving contact 120, and no limitation is made here. Preferably, the surface of the limiting structure 130 contacting the movable contact 120 has a certain slope, and the slope range is substantially the same as the rotation angle range of the movable contact 120, so as to reduce the friction loss on the contact surface during contact and improve the service life.

The electrical component of this embodiment includes two processes when operating, one of the two processes is a disconnection process of the moving contact and the stationary contact, referring to fig. 1, a current on a coil of the electromagnetic component is disconnected, an electromagnetic acting force between the stationary core and the moving core disappears, the moving core moves upward under an elastic force of the reaction spring, the moving core moves to drive the actuating portion 110 to move, the actuating portion 110 contacts with the moving contact 120, and the actuating portion 110 drives the moving contact 120 to move upward and disconnect with the stationary contact 150. After the movable contact 120 moves linearly for a certain distance under the driving of the contact support part, one end of the movable contact 120 reaches the position of the limiting structure 130, the movable contact 120 continues to move, one end of the movable contact 120 contacts with the position limiting point 131 of the limiting structure 130, one end of the movable contact 120 is limited at the position of the position limiting point 131, the actuating part 110 continues to drive the movable contact 120 to move, the two ends of the movable contact 120 are unbalanced in stress, the movable contact 120 rotates towards the direction away from the static contact 150, the distance between the other end of the movable contact 120 and the static contact 150 is increased, and the electric arc can be effectively extinguished.

the other process is the closing process of the moving contact and the stationary contact, referring to fig. 1 again, current is passed through the coil of the electromagnetic assembly, an electromagnetic acting force is formed between the stationary iron core and the moving iron core, the moving iron core moves downwards to drive the actuating portion 110 to move downwards, and the moving contact 120 moves downwards linearly under the combined action of the elastic assembly. When the movable contact 120 reaches the limiting structure, the limiting structure 130 no longer performs the limiting function, the movable contact 120 continues to move downward, and the direction of the movable contact 120 gradually changes into the horizontal direction. When one end of the movable contact 120 reaches the supporting structure 160, the movable contact 120 continues to move downward, one end of the movable contact 120 contacts with the supporting point of the supporting structure 160, and one end of the movable contact 120 is limited at the supporting point, so that the two ends of the movable contact 120 are unevenly stressed and the movable contact 120 rotates towards the direction close to the fixed contact 150 until the movable contact is closed in contact with the fixed contact 150. The movable iron core can further move downwards until the support surface of the actuating part 110 leaves the movable contact 120, a gap is formed between the support surface and the movable contact 120, the actuating part 110 overstrokes, and the movable contact 120 and the fixed contact 150 are closed.

Example two

As shown in fig. 2, the present embodiment discloses another electrical component. The electrical component in this embodiment may be used as a contactor. In this embodiment, the electrical component includes a supporting structure 260 corresponding to the limiting structure. When the moving contact 220 moves toward the stationary contact 250 under the action of the contact supporting portion, the supporting structure 260 may limit an end of the moving contact 220 so that the moving contact 220 is closed with the stationary contact 250 under the action of the contact supporting portion.

In this embodiment, in order to electrically connect the movable contact 220 with an external circuit, the electrical component further includes a conductive wire holder 270 electrically connected with the external circuit, and the movable contact 220 may be electrically connected with the conductive wire holder 270 through the flexible connecting wire 240 to electrically connect with the external circuit.

In this embodiment, the supporting structure 260 is formed by extending the conductive wire holder 270. Referring to fig. 2, preferably, the conductive wire holder 270 is horizontally disposed, and the conductive wire holder 270 may include a horizontal body portion and a support structure 260 extending from an edge of the body portion perpendicularly with respect to the body portion. By adopting the conductive wire holder 270 of the embodiment, when the contacts of the fixed contact 250 and the movable contact 220 are closed, the supporting structure 260 is in contact with the movable contact 220, and the supporting structure 260 can share a part of current with the flexible connecting wire 240, so that the design has the advantage that the wire diameter of the flexible connecting wire 240 can be reduced according to the shunting principle of the flexible connecting wire 240 and the supporting structure 260 in the product attracting process, so that the flexible connecting wire 240 can move more flexibly, and the mechanical life of the flexible connecting wire is prolonged. When the fixed contact 250 and the movable contact 220 are separated, the supporting structure 260 is separated from the movable contact 220, an arc is generated at one end of the fixed contact 250, which is in contact with the movable contact 220, and no arc is generated at one end of the supporting structure 260, which is in contact with the movable contact 220. Other structures in this embodiment are similar to those of the electrical component in the first embodiment, and are not described herein again.

EXAMPLE III

As shown in fig. 3, the present embodiment discloses yet another electrical component. The electric appliance module in the present embodiment can be used as an electromagnetic relay, and specifically, can be used as a magnetic latching relay. The electrical assembly of the present embodiment includes a contact assembly, an electromagnetic assembly, and a spacing structure 330. The contact assembly comprises a stationary contact 350, a movable contact 320 and a contact support 310 for supporting the movable contact, the contact support 310 being further connected to the electromagnetic assembly. The contact supporting portion 310 can move under the force of the electromagnetic component 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 rotates away from the fixed contact 350 under the action of the contact supporting portion 310. The electrical component further comprises a support structure 360 arranged corresponding to the limiting structure 330. When the movable contact 320 moves toward the stationary contact 350 under the force of the contact supporting portion 310, the supporting structure 360 may limit an end of the movable contact 320, so that the movable contact 320 is closed with the stationary contact 350 under the force of the contact supporting portion 310.

The electromagnetic component can drive the contact supporting part 310 and the moving contact 320 to move back and forth under the change of the externally input current, the moving contact 320 is in the moving process, one end of the moving contact 320 is stopped moving by the limit blocking effect of the limit structure 330, and when the moving contact 320 continues to move under the driving of the contact supporting part 310, the moving contact 320 can rotate around the limited end, so that the other end of the moving contact 320 and the fixed contact 350 are separated from each other to be enlarged, the arc extinguishing effect can be improved, and the electric service life of an electric appliance product is prolonged. The utility model discloses an electrical components adopts single breakpoint structure, saves the contact cost to can reach good arc extinguishing effect, solve traditional single breakpoint electrical components and in order to promote arc extinguishing effect, need improve the problem of the increase of electromagnetism subassembly and product cost that electromagnetism open range, contact pressure, electromagnetism counter-force etc. lead to.

In this embodiment, the contact supporting portion 310 has a gap formed therein for accommodating the movable contact 320. Preferably, two cylindrical bosses 311 in this embodiment may be formed on the contact supporting portion 310, a gap for accommodating the movable contact 320 may be formed between the two cylindrical bosses 311, and the use of the cylindrical bosses 311 to form the gap also facilitates the rotation of the movable contact 320, thereby reducing the wear of the movable contact 320. In practical applications, the actuating portion with other structures may be adopted, and only the gap capable of accommodating the moving contact 320 is required to be formed, which is not limited by the present invention.

In a preferred embodiment, the movable contact 320 may be made of an elastic material, and the shape of the movable contact 320 is preferably a structure that is easily elastically deformed, such as a sheet shape.

the contact supporting portion 310 of the present embodiment does not need to be provided with an elastic component, the contact supporting portion 310 and the movable contact 320 are in transition fit, and a force source for applying a contact pressure to the movable contact 320 is a deformation of the movable contact 320 itself.

In order to realize the electrical connection of the movable contact 320 with the external circuit, the electrical component further includes an electrically conductive wire holder 370 electrically connected with the external circuit, and the movable contact 320 may be electrically connected with the electrically conductive wire holder 370 through the flexible connection wire 340 to be electrically connected with the external circuit. In this embodiment, one end of the movable contact 320 corresponding to the fixed contact 350 is welded to one end of the flexible connection line 340, the other end of the flexible connection line 340 is connected to the conductive connection base 370, and when the movable contact 320 and the fixed contact 350 are closed, the movable contact 320 and the connection base 370 are electrically connected through the flexible connection line 340. When the moving contact 320 and the fixed contact 350 are opened, no arc is generated between the moving contact 320 and the wire holder 370 due to the connection of the flexible connecting wire 340, the arc is generated only between the moving contact 320 and the fixed contact 350, and the safe disconnection can be realized only by eliminating the arc between the moving contact 320 and the fixed contact 350. In other embodiments, considering the position of the conductive wire holder 370, one end of the flexible connecting wire 340 may also be welded and fixed to one end of the movable contact 320 corresponding to the limiting structure 330, so as to electrically connect the movable contact 320 and the conductive wire holder 370.

The electrical component of this embodiment also includes two processes when operating, wherein one process is a disconnection process of the moving contact and the stationary contact, see fig. 3, a forward pulse voltage is applied to the coil of the electromagnetic component, the moving core receives a forward suction force, the moving core drives the supporting portion 310 of the moving contact 320 to move, and the moving contact 320 is driven by the movement of the supporting portion 310 of the moving contact to move upward. When the moving contact 320 reaches the limiting structure 330, one end of the moving contact 320 corresponding to the limiting structure 330 abuts against a limiting point 331 on the limiting structure 330, the moving contact 320 is blocked by the limiting structure 330, when the moving contact 320 is driven by the contact supporting portion 310 to continue moving, the two ends of the moving contact 320 are unbalanced in stress, the moving contact 320 rotates towards the direction far away from the static contact 350, one end of the moving contact 320 far away from the limiting structure 330 is disconnected from the static contact 350, the contact separation distance is increased, and the arc extinguishing capacity is improved. The other process is a closing process of the movable contact and the stationary contact. Referring to fig. 3 again, a reverse pulse voltage is applied to the coil of the electromagnetic assembly, the moving iron core is subjected to a reverse attraction force, the moving iron core drives the supporting portion 310 of the moving contact 320 to move, the supporting portion 310 of the contact moves to drive the moving contact 320 to move downward, and the moving contact 320 gradually changes from a rotating direction to a horizontal direction. The contact supporting portion 310 continues to drive the moving contact 320 to move downward, one end of the moving contact 320 is blocked and supported by the supporting structure 360, the contact supporting portion 310 continues to move downward, the center of the moving contact 320 is pulled to deform downward, contact pressure is generated, and the moving contact 320 and the static contact 350 complete a closed state. Other structures in this embodiment are similar to those of the electrical component in the first embodiment, and are not described herein again.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (16)

1. The utility model provides an electrical apparatus subassembly which characterized in that, including the casing and set up in contact subassembly in the casing and with the spacing structure of casing relatively fixed, the contact subassembly includes: the limiting structure can be contacted with or separated from the moving contact, after the moving contact is disconnected from the fixed contact, the moving contact moves linearly for a certain distance under the drive of the contact supporting part and then is contacted with the limiting structure, and the limiting structure rotates under the common action of the limiting structure and the contact supporting part.

2. The electrical component of claim 1, wherein the movable contact rotates through an angle in the range of 5-45 °.

3. The electrical component of claim 1, further comprising a conductive wire holder, wherein the movable contact is connected to the conductive wire holder by a flexible connection.

4. The electrical assembly of claim 1, further comprising a support structure;

When the moving contact moves towards the fixed contact, the supporting structure limits one end of the moving contact so that the moving contact and the fixed contact are closed.

5. The electrical component of claim 4, further comprising a conductive wire holder, wherein the movable contact is connected to the conductive wire holder by a flexible connection;

The support structure is formed by extending the housing or the conductive wire holder.

6. The electrical assembly as recited in claim 5, wherein the support structure is formed by extending the conductive wire holder, a first contact is formed on an end of the support structure contacting the movable contact, and a second contact corresponding to the first contact is formed on the movable contact.

7. The electrical component of claim 4, wherein a distance between a limit point of the limit structure contacting the movable contact and the support structure minus a thickness of the movable contact at a position contacting the limit point is smaller than a minimum distance of the linear motion of a connection between the movable contact and the contact support portion.

8. The electrical assembly of claim 1, wherein the contact support portion includes an actuating portion in contact with the movable contact and a resilient member coupled to a side of the movable contact remote from the actuating portion.

9. The electrical assembly of claim 8, wherein the resilient assembly comprises a spring seat and a spring body, wherein the spring seat is coupled to the spring body at one end and to the movable contact at the other end.

10. The electrical assembly of claim 9 wherein the engagement between the movable contact and the spring seat is a curved engagement.

11. The electrical component of claim 8, wherein the movable contact makes contact with the actuation portion as a flat contact, a curved contact, or a line contact.

12. the electrical assembly of claim 1, wherein the movable contact is a sheet-like structure, and the contact support portion defines at least two projections that define a gap for receiving the movable contact.

13. The electrical assembly of claim 1, wherein the retention structure is formed from an elastic material or a non-elastic material.

14. The electrical assembly of claim 1, wherein the retention structure is a cylindrical, strip-like, or sheet-like structure.

15. The electrical assembly of claim 1, wherein the cross-section of the retention structure is circular, rectangular, trapezoidal, triangular, elliptical, or irregular polygonal.

16. The electrical assembly according to any one of claims 1 to 15, further comprising an electromagnetic assembly disposed within the housing, the electromagnetic assembly including a coil, a stationary core, a movable core and a reversing spring, the movable core being fixedly connected to the contact support;

When current is conducted in the coil, the movable iron core moves towards a first direction and acts on the contact supporting part;

When the current in the coil is cut off, the reverse spring drives the movable iron core to move towards the direction opposite to the first direction and forms force action on the contact supporting part.