Arc connecting plate structure of arc extinguish chamber of contactor

Abstract

The utility model relates to an arc connecting plate structure of an arc extinguish chamber of a contactor, which comprises a shell, a double-breakpoint contact assembly is arranged in the shell and comprises a moving contact assembly and static contact assemblies correspondingly arranged on two sides of the moving contact assembly, and arc extinguish chambers are correspondingly arranged between the moving contact assembly and the static contact assemblies on two sides respectively. One end of the moving contact assembly is also provided with an arc connecting plate, and two ends of the arc connecting plate respectively extend into the arc extinguish chamber. According to the utility model, the arc connecting plate is arranged at one end of the moving contact assembly, and the two ends of the arc connecting plate respectively extend into the arc extinguish chambers at the two sides, so that when the double-breakpoint contact acts, the arc can be quickly transferred to the arc connecting plate from the moving contact assembly, and the arc can be extinguished through the two arc extinguish chambers together; the combustion time of the arc is effectively shortened, and the material loss of the moving contact is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to an arc extinguishing chamber arc connecting plate structure of a contactor. Background Art

[0002] In mechanical and electrical engineering, the design of contactors is crucial for the on-off of circuits, the stable transmission of current, and the effective extinguishing of arcs. Traditional contactor contact structures mostly adopt single-breakpoint or complex multi-point designs. These designs often have problems such as difficulty in quickly extinguishing arcs, severe contact wear, and large material loss when dealing with high current loads and frequent switching operations. In addition, arc connection circuit parts mostly adopt "W" type or other complex structures. These structures not only increase manufacturing costs and processing difficulties, but also easily cause the arc to move inward, which is not conducive to the rapid extinguishing of arcs and the protection of contacts. Utility Model Content

[0003] In view of this, an object of the utility model is to provide an arc extinguishing chamber arc connecting plate structure of a contactor with a simple structure, high arc extinguishing efficiency and long service life.

[0004] In order to achieve the above objectives, the utility model adopts an arc extinguishing chamber arc connecting plate structure of a contactor, including a shell, in which a double-breakpoint contact assembly is arranged, the double-breakpoint contact assembly includes a moving contact assembly and a static contact assembly correspondingly arranged on both sides of the moving contact assembly, arc extinguishing chambers are respectively arranged between the moving contact assembly and the static contact assemblies on both sides, an arc connecting plate is also arranged at one end of the moving contact assembly, and both ends of the arc connecting plate respectively extend into the arc extinguishing chamber.

[0005] Compared with the prior art, the beneficial effect of the above structure is that: by arranging an arc connecting plate at one end of the moving contact assembly, and extending the two ends of the arc connecting plate into the arc extinguishing chambers on both sides respectively, when the double breakpoint contact is actuated, the arc can be quickly transferred from the moving contact assembly to the arc connecting plate, and the two arc extinguishing chambers jointly participate in extinguishing the arc, thereby effectively shortening the burning time of the arc and significantly reducing the material loss of the moving contact. Since the arc is quickly guided to the arc connecting plate and extinguished through the two arc extinguishing chambers, the direct effect of the arc on the moving contact assembly is reduced, thereby reducing the wear and material loss of the contact.

[0006] The utility model is further configured that the arc connection plate is a U-shaped structure, the arc connection plate includes a left side plate, a right side plate, and a connection plate connected to the left side plate and the right side plate respectively, the left side plate and the right side plate are arranged opposite to each other, and a transverse groove is formed at the upper end, and positioning blocks are formed on both sides of the left side plate and the right side plate, and the lower end edges of the left side plate and the right side plate are formed with sawtooth arc extinguishing teeth. The U-shaped arc connection plate can more effectively guide the arc to transfer from the moving contact assembly to the arc extinguishing chamber. When the contacts are separated, the arc will move rapidly along the arc connection plate, reducing the residence time of the arc in the contact area, thereby reducing the heat load and wear of the contacts. The sawtooth arc extinguishing teeth at the lower edge can increase the contact area between the arc and the arc extinguishing chamber wall, promote the cooling and splitting of the arc, and accelerate the arc extinguishing process.

[0007] The utility model is further configured that the housing includes an arc extinguishing chamber seat and an arc extinguishing chamber cover arranged on the arc extinguishing chamber seat, and the inner side wall of the arc extinguishing chamber seat is provided with matching card slots corresponding to the positioning blocks of the left plate and the right plate respectively. The card slots and the positioning blocks cooperate to enable the arc connection plate to be quickly and accurately positioned on the arc extinguishing chamber seat during installation, thereby avoiding misalignment and deviation during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the contactor arc connecting plate and the arc extinguishing chamber according to an embodiment of the utility model.

[0009] Figure 2 It is a structural schematic diagram of a double breakpoint contact assembly and an arc connection plate in an embodiment of the utility model.

[0010] Figure 3 It is a schematic diagram of the structure of the arc connecting plate of an embodiment of the utility model.

[0011] Figure 4 It is a schematic diagram of the shell structure of an embodiment of the utility model.

[0012] Figure 5 It is a schematic diagram of the coordination between the arc extinguishing chamber seat and the arc connecting plate of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] like Figure 1-Figure 5 As shown, an embodiment of the utility model provides an arc extinguishing chamber arc connecting plate structure of a contactor, including a shell 1, in which three groups of double-breakpoint contact assemblies are arranged, and the double-breakpoint contact assembly includes a moving contact assembly 2 and a static contact assembly 3 correspondingly arranged on both sides of the moving contact assembly 2, and arc extinguishing chambers 4 are respectively arranged between the moving contact assembly 2 and the static contact assemblies 3 on both sides, and an arc connecting plate 5 is also arranged at the upper end of the moving contact assembly 2, and both ends of the arc connecting plate 5 extend into the arc extinguishing chamber 4 respectively.

[0014] The arc connecting plate 5 is a U-shaped structure, and the arc connecting plate 5 includes a left side plate 51, a right side plate 52, and a connecting plate 53 respectively connected to the left side plate 51 and the right side plate 52. There are two connecting plates 53, the left side plate 51 and the right side plate 52 are arranged opposite to each other, and two transverse grooves 54 are formed at the upper ends. Positioning blocks 55 are also formed on both sides of the left side plate 51 and the right side plate 52, and serrated arc extinguishing teeth 56 are formed on the lower edges of the left side plate 51 and the right side plate 52.

[0015] The housing 1 includes a base 11, a base 12 covered on the base 11, an arc extinguishing chamber seat 13 covered on the base 12, and an arc extinguishing chamber cover 14 covered on the arc extinguishing chamber seat 13. The inner side walls at both ends of the arc extinguishing chamber seat 13 are provided with matching slots 131 corresponding to the positioning blocks 55 of the left plate 51 and the right plate 52 respectively.

[0016] It should be noted that the figure only shows in detail the markings of one set of double-breakpoint contact assemblies, but the entire structure includes three sets of identical assemblies.

[0017] Of course, in addition to the above-mentioned embodiments, the present invention may also have many other embodiments. Without departing from the essential technical content of the present invention, technicians familiar with the field may make various corresponding changes and deformations according to the present invention, and these changes or deformations are equivalent to the technical solutions in this patent. These corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An arc extinguishing chamber arc connecting plate structure of a contactor, comprising a housing, a double-breakpoint contact assembly is arranged in the housing, the double-breakpoint contact assembly comprises a moving contact assembly and a stationary contact assembly correspondingly arranged on both sides of the moving contact assembly, and arc extinguishing chambers are respectively arranged between the moving contact assembly and the stationary contact assemblies on both sides, characterized in that: An arc connection plate is also provided at one end of the moving contact assembly, and both ends of the arc connection plate extend into the arc extinguishing chamber respectively.

2. The arc extinguishing chamber arc connecting plate structure of the contactor according to claim 1, characterized in that: The arc connection plate is a U-shaped structure, and includes a left side plate, a right side plate, and a connecting plate respectively connected to the left side plate and the right side plate. The left side plate and the right side plate are arranged opposite to each other, and a transverse groove is formed at the upper end. Positioning blocks are also formed on both sides of the left side plate and the right side plate, and serrated arc extinguishing teeth are formed on the lower end edges of the left side plate and the right side plate.

3. The arc extinguishing chamber arc connecting plate structure of the contactor according to claim 2, characterized in that: The shell comprises an arc extinguishing chamber seat and an arc extinguishing chamber cover arranged on the arc extinguishing chamber seat. The inner side wall of the arc extinguishing chamber seat is provided with matching slots corresponding to the positioning blocks of the left plate and the right plate respectively.

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