Static contact assembly, change-over switch and electric equipment

Abstract

The utility model provides a static contact assembly, a change-over switch and electric equipment, and relates to the technical field of low-voltage electric appliances. The static contact assembly comprises a mounting plate and a contact piece. Wherein the mounting plate is made of a first material and is manufactured by adopting an integral forming process; and the contact piece is connected with the mounting plate, is made of a second material, and is used for keeping electric contact with the clamping type moving contact in a closing manner. The mounting plate is manufactured by adopting an integral forming process, so that the assembly procedures can be reduced, the dimensional and quality consistency of parts can be ensured, and compared with the existing static contact, the number of connected parts is reduced, so that the material waste and the assembly time are reduced, and the production efficiency is remarkably improved; as the contact piece is in contact with the moving contact, the mounting plate and the contact piece are respectively made of two materials, the contact piece can be made of a more durable material according to requirements, the mounting plate can be made of a material with lower cost, the service life of the static contact assembly is prolonged, and the production cost of a product can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a static contact assembly, a transfer switch and electrical equipment. Background Art

[0002] At present, in order to ensure the safety of electricity use, a transfer switch is usually installed on the line to cut off the circuit in time when a short circuit or other fault occurs in the line, thereby effectively protecting the line and electrical equipment.

[0003] The static contacts of existing transfer switches are usually composed of multiple components such as a mounting plate, a contact, an arc-starting piece, and a rivet. The mounting plate, the contact, and the arc-starting piece are installed by welding or riveting, which is not only inconvenient to assemble, but also leads to an excessive number of components in the overall transfer switch, a complex structure, and increased production costs. Utility Model Content

[0004] The purpose of the utility model is to provide a static contact assembly, a transfer switch and an electrical device, which have a simple structure and, compared with existing static contacts, have fewer connected parts, thereby reducing material waste and assembly time and significantly improving production efficiency.

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

[0006] In a first aspect, the present invention provides a static contact assembly, comprising:

[0007] A mounting plate, wherein the mounting plate is made of a first material and is formed in an integral manner;

[0008] A contact piece is connected to the mounting plate, the contact piece is made of a second material, and the contact piece is used to maintain electrical contact with the clamping movable contact when the switch is closed.

[0009] In an optional embodiment, the static contact assembly further includes an arc-starting plate, which is integrally formed with the mounting plate and both are made of the first material, and the contact members are provided on at least two sides of the arc-starting plate.

[0010] In an optional embodiment, the corrosion resistance of the second material is higher than that of the first material.

[0011] In an optional embodiment, the mounting plate includes a first mounting portion and a second mounting portion vertically connected, the first mounting portion is provided with a mounting hole, the mounting hole is used for assembly with a mounting piece, and the arc striking plate is vertically connected to the second mounting portion.

[0012] In an optional embodiment, a mounting groove is provided at one end of the arc striking plate away from the mounting plate, and the contact member is provided in the mounting groove.

[0013] In an optional embodiment, the number of the contact members is two, the mounting grooves are provided on two opposite sides of the arc-starting plate, and the two contact members are respectively provided in the two mounting grooves.

[0014] In an optional embodiment, the arc-striking plate is provided with an arc-striking edge, and the arc-striking edge is arranged at an inclination so that the width of the arc-striking plate gradually decreases in a direction away from the mounting plate.

[0015] In an optional embodiment, the arc-starting plate is made by a punching process.

[0016] In a second aspect, the utility model provides a switching switch, comprising a mounting member, a moving contact, and a static contact assembly as described in any one of the aforementioned embodiments, wherein the static contact assembly is arranged on the mounting member, and the moving contact is rotatably arranged in the switching switch to contact or separate from the static contact assembly.

[0017] In a third aspect, the present invention provides an electrical device comprising a transfer switch as described in the aforementioned embodiment.

[0018] The beneficial effects of the static contact assembly, transfer switch and electrical equipment provided by the embodiments of the present utility model include: the mounting plate is made by an integrated molding process, which can not only reduce the assembly process, but also ensure the dimensional and quality consistency of the parts, and the contact piece used to contact the moving contact is directly connected to the mounting plate. Compared with the existing static contact, there are fewer connected parts, thereby reducing material waste and assembly time, and significantly improving production efficiency; and because the contact piece is in contact with the moving contact, by making the mounting plate and the contact piece of two different materials respectively, the contact piece can be made of a more durable material according to needs, and the mounting plate can be made of a lower-cost material, thereby ensuring the service life of the static contact assembly and reducing the production cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a static contact assembly provided in an embodiment of the present utility model;

[0021] Figure 2 This is an exploded view of the static contact assembly provided in an embodiment of the present utility model.

[0022] Icon: 10-static contact assembly; 100-mounting plate; 110-first mounting portion; 111-mounting hole; 120-second mounting portion; 200-contact piece; 300-arc-striking plate; 310-mounting groove; 320-arc-striking edge. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] At present, in order to ensure the safety of electricity use, a transfer switch is usually installed on the line to cut off the circuit in time when a short circuit or other fault occurs in the line, thereby effectively protecting the line and electrical equipment.

[0030] The static contacts of existing transfer switches are usually composed of multiple components such as a mounting plate, a contact, an arc-starting piece, and a rivet. The mounting plate, the contact, and the arc-starting piece are installed by welding or riveting, which is not only inconvenient to assemble, but also leads to an excessive number of components in the overall transfer switch, a complex structure, and increased production costs.

[0031] Based on the above problems, an embodiment of the present invention provides a static contact assembly for solving the above problems. The static contact assembly can be applied to electrical equipment such as switching switches. The switching switch can cut off the circuit in time when a short circuit or other fault occurs in the line, thereby effectively protecting the line and electrical equipment.

[0032] For details, see Figure 1 and Figure 2 The static contact assembly 10 includes a mounting plate 100 and a contact member 200 .

[0033] The mounting plate 100 is made of a first material and is formed in an integrated process; the contact 200 is connected to the mounting plate 100 and is made of a second material. The contact 200 is used to maintain electrical contact with the clamping moving contact when closed.

[0034] In this embodiment, the mounting plate 100 is manufactured by an integrated molding process, which can not only reduce the assembly process but also ensure the dimensional and quality consistency of the parts. The contact piece 200 used to contact the moving contact is directly connected to the mounting plate 100. Compared with the existing static contact, fewer parts are connected, thereby reducing material waste and assembly time, and significantly improving production efficiency. Since the contact piece 200 is in contact with the moving contact, the mounting plate 100 and the contact piece 200 are made of two different materials respectively. According to needs, the contact piece 200 can be made of a more durable material and the mounting plate 100 can be made of a lower-cost material, thereby ensuring the service life of the static contact assembly 10 and reducing the production cost of the product.

[0035] Furthermore, the static contact assembly 10 also includes an arc-striking plate 300, which is integrally formed with the mounting plate 100 and is both made of the first material. The contact piece 200 is arranged on at least two sides of the arc-striking plate 300, so that when the moving contact clamps the static contact, both moving contacts can contact the contact piece 200 to achieve stable closing of the moving and static contacts.

[0036] In this embodiment, an arc-starting plate 300 is provided to be connected to the mounting plate 100, and the contact pieces 200 are provided on both sides of the arc-starting plate 300. Thus, when the moving contact clamps the two contact pieces 200, the arc generated when the moving contact is separated from the contact piece 200 can be guided to the arc-starting plate 300 through the arc-starting plate 300 and transferred along the arc-starting plate 300, thereby effectively protecting the contact pieces 200 and thus extending the service life of the static contact assembly 10 and the switching switch.

[0037] In this embodiment, the contact member 200 and the arc striking plate 300 may be connected by welding or riveting.

[0038] It is worth noting that the arc striking plate 300 and the mounting plate 100 are integrally formed. Compared with the existing static contacts, there is no need to connect them by riveting or welding, thereby effectively reducing the number of parts of the static contact assembly 10, thereby reducing the use of parts and simplifying the assembly process, thereby effectively reducing production costs and improving production efficiency.

[0039] Specifically, the arc-starting plate 300 is manufactured using a blanking process. Because blanking typically shears and separates materials in a single operation, it significantly improves production efficiency for high-volume production. Compared to other processing methods (such as riveting, welding, or forging), blanking is generally more cost-effective, reducing material waste, streamlining the production process, and lowering overall production costs.

[0040] Of course, in other embodiments of the present invention, the contact member 200 may also be disposed on the mounting plate 100 , which is not specifically limited herein.

[0041] Furthermore, the corrosion resistance of the second material is higher than that of the first material.

[0042] In this embodiment, arcing and wear are likely to occur at the interface between the contact member 200 and the moving contact under high current or frequent switching conditions, leading to increased contact resistance, increased heat generation, and even contact burnout. Therefore, selecting a second material with a higher ablation resistance to manufacture the contact member 200 can effectively reduce this phenomenon, thereby extending the service life of the stationary contact assembly 10.

[0043] The mounting plate 100 and the arc striking plate 300 are made of general corrosion-resistant materials, which can reduce costs.

[0044] Furthermore, the mounting plate 100 includes a first mounting portion 110 and a second mounting portion 120 vertically connected. The first mounting portion 110 is provided with a mounting hole 111 for assembly with a mounting member. The arc striking plate 300 is vertically connected to the second mounting portion 120 .

[0045] In this embodiment, the first mounting portion 110 is horizontally arranged, the second mounting portion 120 is vertically arranged, the arc striking plate 300 is vertically connected to the second mounting portion 120 and is also vertically arranged, and the contact member 200 is arranged on the arc striking plate 300, which is also convenient for contact with the moving contact.

[0046] It is worth mentioning that the aforementioned verticality can be understood as the two components being set at approximately 90°, rather than absolutely 90°; for example, the angle between the first mounting portion 110 and the second mounting plate 100 can be 85° to 95°, which is specifically defined here.

[0047] Furthermore, a mounting groove 310 is provided at one end of the arc striking plate 300 away from the mounting plate 100 , and the contact member 200 is disposed in the mounting groove 310 .

[0048] In this embodiment, by providing the mounting groove 310 on the arc striking plate 300 and installing the contact 200 in the mounting groove 310 , the installation of the contact 200 and the arc striking plate 300 can be made more stable.

[0049] It should be noted that, in order to further improve the installation stability of the contact 200 , the profile of the contact 200 is matched with the profile of the installation groove 310 .

[0050] Furthermore, the number of the contact members 200 is two, and mounting grooves 310 are provided on two opposite sides of the arc striking plate 300 , and the two contact members 200 are respectively disposed in the two mounting grooves 310 .

[0051] In this embodiment, mounting grooves 310 are provided on both sides of the arc striking plate 300 , and the two contact members 200 are respectively disposed in the two mounting grooves 310 , so that the moving contact can clamp the two contact members 200 .

[0052] Furthermore, the arc-striking plate 300 is provided with an arc-striking edge 320 , which is inclined so that the width of the arc-striking plate 300 gradually decreases in a direction away from the mounting plate 100 , so that the arc-striking plate 300 has a triangular structure.

[0053] In this embodiment, by providing an inclined arc-striking edge 320 on the arc-striking plate 300, not only can the arc generated when the moving contact is separated from the contact piece 200 be guided to transfer along the arc-striking edge 320, thereby achieving the purpose of controlling the movement direction of the arc, thereby reducing the loss of the contact piece 200 and thus extending the service life; it can also increase the arc movement path, thereby accelerating the cooling speed of the arc, which helps to extinguish the arc faster.

[0054] In summary, the present invention provides a static contact assembly 10, a switching switch and an electrical equipment, and adopts an integrated molding process to manufacture the mounting plate 100, which can not only reduce the assembly process, but also ensure the dimensional and quality consistency of the parts, and the contact piece 200 used to contact the moving contact is directly connected to the mounting plate 100. Compared with the existing static contact, there are fewer connected parts, thereby reducing material waste and assembly time, and significantly improving production efficiency; and because the contact piece 200 is in contact with the moving contact, by making the mounting plate 100 and the contact piece 200 of two different materials respectively, the contact piece 200 can be made of a more durable material according to needs, and the mounting plate 100 can be made of a lower-cost material, thereby ensuring the service life of the static contact assembly 10 and reducing the production cost of the product.

[0055] Furthermore, the present invention also provides a transfer switch, comprising a mounting member, a moving contact, and the static contact assembly 10 in the above embodiment.

[0056] In this embodiment, the static contact is provided on the mounting member, and the movable contact is rotatably provided in the transfer switch to contact or separate with the static contact assembly 10, thereby realizing closing or opening of the transfer switch.

[0057] Furthermore, the present invention provides an electrical device equipped with the aforementioned transfer switch. The electrical device can be equipped with at least one of the following: a distribution box, a cable, a distribution cabinet, a motor, a switch and socket, a lamp, an air conditioner, an electric water heater, an electric meter, a camera, a telephone, a computer, etc. The electrical device can utilize the transfer switch structure of the present application to achieve intelligent management, but is not limited to the above-mentioned intelligently managed electrical devices and can also be used in non-intelligent distribution equipment in traditional industries.

[0058] An embodiment of the present application also provides an electrical device, in which the aforementioned conversion switch is applied to the electrical device. The electrical device can be used in smart scenarios, such as smart homes, the Internet of Things industry, and more smart scenarios, to achieve intelligent management.

[0059] Optionally, the embodiments of the present application can be used for: fire-fighting electricity: fire control room, fire pumps, smoke exhaust facilities, fire elevators and their drainage pumps, fire emergency lighting, etc. Level 1; aisle lighting, duty lighting, guard lighting, obstacle sign lights; rail transit; security system power supply; electronic information room power supply; passenger elevator power; sewage pump; variable frequency speed regulation constant pressure water supply and domestic pump; main offices, conference rooms, general duty rooms and archives rooms, etc.

[0060] It is understood that the above scenarios are merely examples and do not limit the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, those skilled in the art will appreciate that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application will also be applicable to similar technical problems.

[0061] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0062] In this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0063] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A static contact assembly, characterized in that: include: A mounting plate (100), wherein the mounting plate (100) is made of a first material and is manufactured using an integral molding process; A contact piece (200) is connected to the mounting plate (100), the contact piece (200) is made of a second material, and the contact piece (200) is used to maintain electrical contact with the clamping movable contact when the switch is closed.

2. The static contact assembly according to claim 1, characterized in that: The static contact assembly further comprises an arc striking plate (300), wherein the arc striking plate (300) and the mounting plate (100) are integrally formed and both are made of the first material, and the contact member (200) is arranged on at least two sides of the arc striking plate (300).

3. The static contact assembly according to claim 1 or 2, characterized in that: The corrosion resistance of the second material is higher than that of the first material.

4. The static contact assembly according to claim 2, characterized in that: The mounting plate (100) comprises a first mounting portion (110) and a second mounting portion (120) connected vertically, wherein the first mounting portion (110) is provided with a mounting hole (111), and the mounting hole (111) is used for assembling with a mounting member, and the arc striking plate (300) is vertically connected to the second mounting portion (120).

5. The static contact assembly according to claim 2, characterized in that: An installation groove (310) is provided at one end of the arc striking plate (300) away from the installation plate (100), and the contact member (200) is arranged in the installation groove (310).

6. The static contact assembly according to claim 5, characterized in that: The number of the contact members (200) is two, and the mounting grooves (310) are provided on two opposite sides of the arc-starting plate (300), and the two contact members (200) are respectively provided in the two mounting grooves (310).

7. The static contact assembly according to claim 2, characterized in that: The arc-starting plate (300) is provided with an arc-starting edge (320), and the arc-starting edge (320) is arranged in an inclined manner so that the width of the arc-starting plate (300) gradually decreases in a direction away from the mounting plate (100).

8. The static contact assembly according to claim 2, characterized in that: The arc-starting plate (300) is manufactured by a punching process.

9. A transfer switch, characterized in that: It comprises a mounting part, a moving contact and a static contact assembly according to any one of claims 1 to 8, wherein the static contact assembly is arranged on the mounting part, and the moving contact is rotatably arranged in the switching switch to contact or separate with the static contact assembly.

10. An electrical device, characterized in that: Comprising the transfer switch according to claim 9.

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