Capacity-increasing contactor with interphase spacing arcs

Abstract

The utility model discloses a capacity-increasing contactor with interphase arc spacing. The capacity-increasing contactor comprises a shell and a conducting bar arranged on the shell, the shell is further provided with an arc blocking piece, the arc blocking piece comprises a supporting part, the supporting part is provided with an arc blocking plate, and the arc blocking plate is located between every two adjacent conducting bars, so that the problem of inter-phase short circuit between the conducting bars is solved. In conclusion, after the current-carrying area of the conducting bar is enlarged, the arc blocking plate is used for blocking inter-phase arc contact, so that the contactor can bear larger current, and capacity increasing of the contactor is completed. On the basis, although the contactor is simple in structure, the capacity increasing function is achieved, meanwhile, the interphase short circuit phenomenon can be effectively prevented, and therefore the contactor is safer in use.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to a capacity-increasing contactor with phase-to-phase arc separation. Background Art

[0002] The rated current of a conventional 95 AC contactor is 95A, and the agreed free air thermal current is 125A. If the customer requires a rated current of 110A and an agreed free air thermal current of 140A, a 115 AC contactor must be selected. Compared with a 95 AC contactor, not only is the product larger in size and occupies more space, but the product cost also increases.

[0003] Research has revealed that a new main circuit wiring busbar can be designed into the 95A AC contactor body. This busbar increases the current-carrying area to meet the required 110A capacity. Due to product safety concerns, the creepage distance and electrical clearance between the two busbars need to be increased to ensure electrical safety. Utility Model Content

[0004] The purpose of the utility model is to provide a capacity-increasing contactor with phase-to-phase arc separation to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a capacity-increasing contactor with phase-to-phase arc separation, comprising a shell and a conductive bar mounted on the shell; side plates are provided on both sides of the shell; wherein a partition is further provided between the two side plates, and the partition is located between the two conductive bars; an arc-blocking member is further provided on the shell, and the arc-blocking member is movably mounted on the shell; the arc-blocking member includes a supporting portion connected to the shell; an arc-blocking plate is further provided on the supporting portion, and the arc-blocking plate is inserted between two adjacent conductive bars to prevent phase-to-phase short circuits between the conductive bars.

[0006] As a preferred technical solution of the present invention: first buckles are further provided at both ends of the support portion, and the first buckles are adaptively connected to first buckle grooves provided on the side panels.

[0007] As a preferred technical solution of the present invention: a second buckle is further provided on the support portion, and the second buckle is adaptively connected to a second buckle groove provided on the shell.

[0008] As a preferred technical solution of the present invention: a slot is further provided on a side of the arc-blocking plate facing the partition, and the arc-blocking member is guided to move on the shell through the partition.

[0009] As a preferred technical solution of the present invention: a pressing plate is further provided on the supporting portion, and the lower bottom surface of the pressing plate presses on the conductive bar.

[0010] By adopting the above technical solution, the beneficial effect of the present invention is that after the current-carrying area of ​​the conductive bus is expanded, the arc-blocking plate is used to block the arc contact between the phases, thereby allowing the contactor to carry a larger current, thereby completing the capacity increase of the contactor. At the same time, the provision of the arc-blocking member can also expand the creepage distance and electrical clearance between the two conductive buses, thereby making the contactor safer during use. Based on this, although the present invention has a simple structure, its simple structure can effectively prevent the phenomenon of phase short circuit while achieving the capacity increase function, thereby making the contactor safer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an exploded schematic diagram of the main structure of the utility model;

[0012] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0013] Figure 3 This is a schematic diagram of the structure of one side of the arc-blocking member of the utility model;

[0014] Figure 4 This is a schematic structural diagram of the other side of the arc-blocking member of the present invention;

[0015] Figure 5 for Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0016] In the figure: 1. Shell; 10. Side panel; 11. First buckle slot; 12. Partition; 13. Second buckle slot; 2. Conductive bar; 3. Arc-blocking member; 30. Support portion; 31. Arc-blocking plate; 32. Slot; 33. Pressing plate; 34. First buckle; 35. Second buckle. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0018] See also Figure 1-5The utility model provides an embodiment: a capacity-increasing contactor with phase-to-phase arc separation, comprising a shell 1 and a conductive bar 2 mounted on the shell 1; side plates 10 are provided on both sides of the shell 1; wherein a partition 12 is further provided between the two side plates 10, and the partition 12 is located between the two conductive bars 2; an arc-blocking member 3 is further provided on the shell 1, and the arc-blocking member 3 is movably mounted on the shell 1; the arc-blocking member 3 includes a support portion 30 connected to the shell 1; an arc-blocking plate 31 is further provided on the support portion 30, and the arc-blocking plate 31 is inserted between two adjacent conductive bars 2 to prevent phase-to-phase short circuit between the conductive bars 2.

[0019] In summary, after expanding the current-carrying area of ​​the conductive bar 2, the arc-blocking plate 31 is used to block interphase arc contact, thereby allowing the contactor to carry a larger current, thereby completing the capacity increase of the contactor, that is, increasing the rated current from 95A to 110A, and the agreed free air heating current reaches 140A. At the same time, the provision of the arc-blocking member 3 can also expand the creepage distance and electrical clearance between the two conductive bars 2, thereby making the contactor safer in use. Based on this, although the structure of the utility model is simple, its simple structure can effectively prevent the phenomenon of phase short circuit while achieving the capacity increase function, thereby making the contactor safer in use.

[0020] Furthermore, first clips 34 are provided at both ends of the support portion 30 , and the first clips 34 are adapted to connect with the first clip grooves 11 provided on the side panels 10 , thereby facilitating the connection between both ends of the arc-blocking member 3 and the housing 1 .

[0021] Furthermore, since the support portion 30 is provided with a second clip 35 that is adapted to connect with the second clip groove 13 provided on the housing 1, when both ends of the arc-blocking member 3 are fixed, the second clip 35 located behind the first clip 34 is clipped into the second clip groove 13, thereby increasing the number of contact points between the arc-blocking member 3 and the housing 1 and improving the stability of the arc-blocking member 3 after connection with the housing 1.

[0022] On the basis of the above solution, since the side of the arc-blocking plate 31 facing the partition 12 is further provided with a slot 32, and the arc-blocking member 3 is guided to move on the housing 1 through the partition 12, the arc-blocking member 3 is connected to the housing 1 simply and conveniently, and no misalignment occurs during the connection process.

[0023] Furthermore, since the support portion 30 is provided with a pressure plate 33, and the lower surface of the pressure plate 33 presses on the conductive bar 2, the arc-blocking member 3 can not only prevent interphase short circuits but also press the conductive bar 2 against the housing 1, so that the conductive bar 2 does not easily shake.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A capacity-increasing contactor with phase-to-phase arc separation, characterized in that: It comprises a housing (1) and a conductive bar (2) mounted on the housing (1); Side plates (10) are provided on both sides of the housing (1); a partition plate (12) is further provided between the two side plates (10), and the partition plate (12) is located between the two conductive bars (2); An arc-blocking member (3) is further provided on the housing (1), and the arc-blocking member (3) is movably mounted on the housing (1); The arc-blocking member (3) comprises a support portion (30) connected to the housing (1); an arc-blocking plate (31) is further provided on the support portion (30), and the arc-blocking plate (31) is inserted between two adjacent conductive bars (2) to prevent interphase short circuit between the conductive bars (2).

2. A capacity-increasing contactor with phase-to-phase arc separation according to claim 1, characterized in that: Both ends of the support portion (30) are further provided with first buckles (34), and the first buckles (34) are adapted to be connected with first buckle grooves (11) provided on the side panels (10).

3. A capacity-increasing contactor with phase-to-phase arc separation according to claim 2, characterized in that: A second buckle (35) is also provided on the support portion (30), and the second buckle (35) is adapted to be connected with a second buckle groove (13) provided on the housing (1).

4. A capacity-increasing contactor with phase-to-phase arc separation according to claim 1, 2 or 3, characterized in that: A slot (32) is also provided on a side of the arc-blocking plate (31) facing the partition (12), and the arc-blocking member (3) is guided to move on the housing (1) via the partition (12).

5. The capacity-increasing contactor with phase-to-phase arc separation according to claim 3, characterized in that: A pressing plate (33) is also provided on the supporting portion (30), and the lower surface of the pressing plate (33) is pressed on the conductive bar (2).

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