A relay with magnetic steel arc extinguishing

Abstract

The application provides a relay with magnetic steel arc extinguishing, and relates to the technical field of relays, which comprises an outgoing piece with a static contact, a moving spring piece with a moving contact, a pushing piece for linkage with the moving spring piece, and a driving piece for providing straight pushing force to the pushing piece; wherein the static contact is arranged at the bottom end side of the outgoing piece, the moving contact is arranged at the top end side of the moving spring piece and is arranged opposite to the static contact to be controlled by the driving piece to implement contact and separation between the moving contact and the static contact; a magnetic steel is arranged between the outgoing piece and the moving spring piece, the magnetic steel is arranged in the outward direction of both, and the magnetic steel is limited in the central position along the vertical direction of the moving contact and the static contact in the separation state and the offset position along the horizontal direction, so that the offset magnetic field formed after the magnetic steel is limited in the position can implement arc extinguishing operation with a large path.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, in particular to a relay with magnetic steel arc extinguishing. BACKGROUND

[0002] A relay is an electrical control device, which is a kind of electrical appliance that makes the controlled quantity in the electrical output circuit have a predetermined step change when the input quantity changes to a specified requirement. It has an interactive relationship between the control system and the controlled system, and is usually applied to the control circuit of automation. In fact, it is a kind of "automatic switch" that uses small current to control large current operation, so it plays the role of automatic regulation, safety protection, and conversion circuit in the circuit.

[0003] However, during the use of the relay, electromagnetic energy needs to rely on the self-induction high voltage generated by the breaking point to break through the air to maintain the current, thereby generating an electric arc. The existing relays have many shortcomings in arc extinguishing, which greatly affects the load and service life of the product. In particular, it is difficult to meet the adaptation to various use environments for multiple purposes. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a relay with magnetic steel arc extinguishing to solve the above problems.

[0005] The present application adopts the following scheme:

[0006] The present application provides a relay with magnetic steel arc extinguishing, comprising: an outgoing piece with a static contact, a moving spring piece formed with a moving contact, a pushing piece for linkage with the moving spring piece, and a driving piece for providing straight pushing force to the pushing piece; wherein the static contact is arranged at the bottom end side of the outgoing piece, the moving contact is arranged at the top end side of the moving spring piece and is arranged opposite to the static contact, so as to be controlled by the driving piece to implement the contact and separation between the moving contact and the static contact; a magnetic steel is arranged between the outgoing piece and the moving spring piece, the magnetic steel is arranged in the outward direction of the two, and the magnetic steel is limited to the central position along the vertical direction of the moving contact and the static contact in the separated state and the offset position along the horizontal direction, so that the bias magnetic field formed after the magnetic steel is limited in the position can implement the arc extinguishing operation with a large path.

[0007] As a further improvement, two outgoing pieces and their matched moving spring pieces are provided, and each is provided with the magnetic steel; wherein the two magnetic steels are offset to each other and arranged adjacent to each other.

[0008] As a further improvement, the orthogonal projection of the magnetic steel is formed on the contact movement path of the moving contact.

[0009] As a further improvement, any one side or opposite sides of the leading-out piece and the moving spring piece are provided with the magnetic steel, and the magnetic steel is configured as a rectangular body structure.

[0010] As a further improvement, the relay further comprises a main body part and a contact part arranged above the main body part; wherein the driving piece is arranged in the main body part, the leading-out piece and the pushing piece are arranged opposite to each other, and the leading-out piece is at least partially exposed outside the contact part.

[0011] As a further improvement, the magnetic steel is exposed outside the contact part and is spaced apart from the moving contact and the stationary contact inside.

[0012] As a further improvement, the contact part comprises a boss-shaped shell, and a setting groove for vertically assembling the magnetic steel is recessed at a stepped end face of the boss-shaped shell; wherein the magnetic steel is arranged in the shell in a relatively sinking manner after being positioned.

[0013] As a further improvement, a guide groove is further arranged at the stepped side face of the shell, and the guide groove vertically penetrates the shell and is in communication with the setting groove.

[0014] As a further improvement, a top end side of the leading-out piece is configured as a threaded butt joint; wherein a barrier wall arranged at the stepped end face by a protrusion is arranged between the two magnetic steels on the same side to shield the two magnetic steels from the exposure direction of the shell.

[0015] As a further improvement, the shell of the main body part is made of a magnetically conductive metal material, and the shell at least covers the outer circumferential side of the driving piece to implement electromagnetic shielding.

[0016] By adopting the above technical solution, the following technical effects can be achieved:

[0017] 1、The relay of the present application can extinguish the arc generated in the process of switching on and switching off by the magnetic steel arranged outside the moving contact and the stationary contact. The arc is a kind of gas discharge phenomenon, which has great harm to the electrical appliances. The arc extinguishing path can be as long as possible by limiting the magnetic steel in the central and offset positions, so that the volt-ampere characteristic of the arc is changed after the arc is lengthened, and the arc can be lengthened along the axial direction or the direction perpendicular to the axial direction, thereby significantly reducing the influence of the arc.

[0018] 2. In this invention, the magnet is positioned vertically centered on the outer side between the lead-out member and the moving spring member, and laterally offset on the other side. This allows the magnetic field formed after its position is defined to perform arc extinguishing operations over a larger path, significantly increasing the arc's elongation path perpendicular to the axial direction. Furthermore, the relay equipped with the magnet can switch high-current, high-power circuits, thereby improving product performance and operational reliability, making it particularly suitable for magnetic latching relays and electromagnetic relays. Additionally, its reasonable structure and reliable contact make it widely applicable in 24VDC load switches in vehicle assemblies and 48VDC circuit breakers in photovoltaic assemblies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the relay according to an embodiment of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of a relay according to an embodiment of the present invention;

[0022] Figure 3 This is a partial cross-sectional view of the relay in an embodiment of the present invention from another perspective;

[0023] Figure 4 This is a schematic diagram of the relay structure of an embodiment of the present invention from other perspectives;

[0024] Figure 5 This is a schematic diagram of the relay structure from another perspective according to an embodiment of the present invention;

[0025] Figure 6 This is a structural schematic diagram of the magnet of the relay in an embodiment of the present invention at the locations of the stationary contact and the moving contact;

[0026] Figure 7 This is a partial disassembly diagram of the contact portion of the relay according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the contact portion of the relay according to an embodiment of the present invention.

[0028] Icons: 1-lead-out component; 2-moving spring component; 3-pushing component; 4-stationary contact; 5-moving contact; 6-magnet; 7-main body; 8-contact part; 9-step; 10-installation groove; 11-guide groove; 12-connection part; 13-barrier wall. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Example

[0031] Combination Figures 1 to 8 This embodiment provides a relay with a magnet for arc extinguishing, including: a lead-out member 1 having a stationary contact 4, a moving spring member 2 having a moving contact 5, a pusher member 3 for linkage with the moving spring member 2, and a drive member (not shown) providing a direct pushing force to the pusher member 3. The stationary contact 4 is disposed at the bottom end of the lead-out member 1, and the moving contact 5 is disposed at the top end of the moving spring member 2 and is opposite to the stationary contact 4, so as to control the contact and separation between the moving contact 5 and the stationary contact 4 under the control of the drive member. A magnet 6 is provided between the lead-out member 1 and the moving spring member 2, the magnet 6 is disposed on the outer side of both, and the magnet 6 is defined at the vertical center position and the lateral offset position of the moving contact 5 and the stationary contact 4 in the separated state (specifically as shown in the figure). Figure 6 As shown), so that the bias magnetic field formed after the magnet 6 is confined to its position can perform a large-path arc extinguishing operation.

[0032] The relay described above uses a magnet 6 located outside the moving contact 5 and the stationary contact 4 to extinguish the electric arc generated during the connection and disconnection processes. An electric arc is a gas discharge phenomenon that poses a significant hazard to electrical appliances. By confining the magnet 6 to a centered or offset position, the arc-extinguishing path can be lengthened as much as possible. This lengthening alters the arc's volt-ampere characteristics, allowing the arc to be lengthened either along its axial direction or perpendicular to it, significantly reducing the impact of the arc.

[0033] The magnet 6 is positioned vertically centered on the outer side between the lead-out member 1 and the moving spring member 2, while being offset laterally. This allows the magnetic field it generates after being positioned to extinguish the arc over a longer path, significantly increasing the arc's elongation path perpendicular to the axial direction. Furthermore, relays equipped with the magnet 6 can switch high-current, high-power circuits, thereby improving product performance and operational reliability, making them particularly suitable for magnetic latching relays and electromagnetic relays. Additionally, its reasonable structure and reliable contact make it widely applicable in 24VDC load switches in vehicle assemblies and 48VDC circuit breakers in photovoltaic assemblies.

[0034] It should be mentioned that the configuration of the magnet in the relay enables the relay in this application to be upgraded from initially meeting the load of 24VDC, 300A to meeting the load of 48VDC, 200A, significantly improving the load capacity of the relay, and making it suitable for power environments with small loads as well as larger loads.

[0035] It should be noted that the drive component used to provide direct-push power is an existing drive device, which will not be shown in detail in this embodiment. It should be understood that the direct-push drive device is a common structure in the prior art, and its working mechanism can be achieved by holding it with a magnet or by holding it with the current of a coil, thereby realizing the mutual linkage between the push component 3 and the moving spring component 2.

[0036] like Figure 3 , Figure 6 and Figure 7 As shown, in one embodiment, two lead-out members 1 and their corresponding moving spring members 2 are provided, each equipped with a magnet 6. The two magnets 6 are offset from each other and arranged adjacent to each other. In this embodiment, the two lead-out members 1 and the moving spring members 2 cooperate to form two points of contact and separation, and each point is equipped with a magnet 6. The magnets 6 are arranged on the outer periphery of the point and respectively extinguish the generated arc at their respective locations, further achieving a more efficient arc extinguishing purpose. Furthermore, the magnets 6 are offset laterally, and the two magnets 6 are offset to a side adjacent to each other, greatly enhancing the interaction and superposition effect between the magnetic fields formed by the two magnets 6, which can significantly improve the arc extinguishing effect.

[0037] In one embodiment, the orthographic projection of the magnet 6 is formed on the contact path of the moving contact 5. The magnet 6 is positioned directly outside the point where the separated moving contact 5 and stationary contact 4 meet, and the projected position of the offset magnet 6 relative to this point remains on the movement path of the moving contact 5. This ensures that the magnet 6 is always within the effective arc-extinguishing space while maintaining its offset, thus making efficient use of the overall product layout.

[0038] In this embodiment, magnets 6 are arranged on either one side or opposite sides of the lead-out member 1 and the moving spring member 2, and the magnets 6 are rectangular in structure. In one embodiment, the magnets 6 for arc extinguishing are arranged only on one side of the lead-out member 1 and the moving spring member 2, which can ensure arc extinguishing efficiency while controlling costs. In another embodiment, magnets 6 are provided on opposite sides of the lead-out member 1 and the moving spring member 2, and the two magnets 6 for the same point cooperate to perform arc extinguishing operation in their respective spaces, thereby cooperating to achieve the effect of elongating the arc in multiple directions.

[0039] like Figures 1 to 5 As shown, in one embodiment, the relay further includes a main body portion 7 and a contact portion 8 disposed above the main body portion 7. The drive member is disposed within the main body portion 7, and the lead-out member 1 and the push member 3 are disposed opposite each other, with the lead-out member 1 at least partially exposed outside the contact portion 8. Clearly, the contact portion 8 engages with an external electrical appliance through the exposed lead-out member 1 to form an electrical connection.

[0040] In one embodiment, the magnet 6 is exposed to the outside of the contact portion 8 and is separated from the moving contact 5 and the stationary contact 4 located inside, which can increase the operating temperature of the magnet 6 and prevent magnetic attenuation.

[0041] Specifically, the contact portion 8 includes a boss-shaped outer shell, with a recessed mounting groove 10 at the end face of its step 9 to facilitate the vertical assembly of the magnet 6. The magnet 6, after being positioned, is relatively recessed within the outer shell. In one embodiment, a guide groove 11 is also provided on the side of the step 9 of the outer shell, extending vertically through the top of the outer shell and communicating with the mounting groove 10. Thus, by providing the mounting groove 10 on the step 9 of the outer shell, and with the mounting groove 10 and guide groove 11 cooperating to achieve an interference fit with the magnet 6, the magnet 6 is quickly positioned at the desired location. The magnet 6 is assembled into the mounting groove 10 of the outer shell, with its position corresponding to the engagement of the internal moving contact 5 and stationary contact 4. The rectangular structure of the magnet 6 is more conducive to the formation of its own magnetic field and the corresponding arc-extinguishing operation. Furthermore, the connection and cooperation between the guide groove 11 and the mounting groove 10 further reduces assembly costs.

[0042] Additionally, the top side of the lead-out member 1 is configured with a threaded mating portion 12 to facilitate quick connection and disconnection of the stationary contact 4 with an external electrical appliance via the external thread of the lead-out member 1. A retaining wall 13 (such as a protrusion) is provided on the end face of the step 9 between the two magnets 6 located on the same side. Figure 5 and Figure 8 As shown), the two magnets are shielded in the direction exposed to the outer casing, thereby increasing the insulation effect between them and preventing short circuits.

[0043] In one embodiment, the housing of the main body 7 is made of a magnetically conductive metal, and the housing at least covers the outer periphery of the drive component to implement electromagnetic shielding. In this embodiment, by using a metal housing for the main body 7, external interference to the internal drive component can be minimized, and the impact of the drive component on the exposed magnet 6 can be relatively reduced. Furthermore, the outer shell of the contact portion 8 has a boss structure, with a step 9 formed on top to facilitate the plug-in adaptation between the contact portion 8 and external electrical appliances. Such a housing and housing structure can ensure product strength while providing a larger internal space. Since the housing only partially covers the magnet 6, and the housing completely encloses the drive component inside, the overall configuration and layout of the product are better, which can improve the product's recognizability and competitiveness.

[0044] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A relay with a magnet for arc extinguishing, characterized in that, include: The device includes a lead-out member with a stationary contact, a moving spring member with a movable contact, a pusher member for linkage with the moving spring member, and a drive member for providing a direct pushing force to the pusher member; wherein, The stationary contact is located at the bottom end of the lead-out member, and the moving contact is located at the top end of the moving spring member and is opposite to the stationary contact, so as to be controlled by the driving member to implement the contact and separation between the moving contact and the stationary contact. A magnet is provided between the lead-out member and the moving spring member. The magnet is positioned on the outer side of both members and is constrained at the vertical center position and the horizontal offset position of the moving and stationary contacts in the separated state, so that the bias magnetic field formed by the magnet after being constrained in its position can perform a large-path arc extinguishing operation. There are two lead-out members and their cooperating moving spring members, each equipped with a magnet. The two magnets are offset from each other and arranged adjacent to each other.

2. The relay with a magnet for arc extinguishing according to claim 1, characterized in that, The orthographic projection of the magnet is formed on the path of the contact movement of the moving contact.

3. A relay with a magnet for arc extinguishing according to claim 1, characterized in that, The magnet is disposed on either one side or opposite sides of the lead-out member and the moving spring member, and the magnet is constructed as a rectangular structure.

4. A relay with a magnet for arc extinguishing according to claim 1, characterized in that, It also includes a main body portion and a contact portion disposed above the main body portion; wherein the drive member is disposed within the main body portion, the lead-out member and the push member are disposed opposite each other, and the lead-out member is at least partially exposed outside the contact portion.

5. A relay with a magnet for arc extinguishing according to claim 4, characterized in that, The magnet is exposed to the outside of the contact portion and is separated from the moving and stationary contacts located inside.

6. A relay with a magnet for arc extinguishing according to claim 5, characterized in that, The contact portion includes a boss-shaped outer shell with a recessed mounting groove at the stepped end face to facilitate the vertical assembly of the magnet; wherein the magnet is relatively sunken and disposed within the outer shell after being confined to its position.

7. A relay with a magnet for arc extinguishing according to claim 6, characterized in that, It also includes a guide groove formed on the side of the stepped part of the housing, the guide groove extending vertically through the top of the housing and communicating with the mounting groove.

8. A relay with a magnet for arc extinguishing according to claim 5, characterized in that, The top end of the lead-out member is configured as a mating portion with external threads; wherein, A protruding retaining wall is set on the end face of the step between the two magnets located on the same side to block the direction in which the two magnets are exposed to the outer shell.

9. A relay with a magnet for arc extinguishing according to claim 4, characterized in that, The housing of the main body is made of magnetically conductive metal, and the housing covers at least the outer periphery of the drive component to implement electromagnetic shielding.

Images