Arc baffle three-phase intelligent electric meter with magnetic latching relay

Abstract

The utility model relates to magnetic latching relay technical field discloses a kind of magnetic latching relays with arc baffle three-phase intelligent electric meter, including relay assembly, and the outside of relay assembly is provided with protection mechanism;The protection mechanism includes mounting groove, multiple clamping posts, multiple clamping holes and arc baffle, the mounting groove is opened in the outside of relay assembly, multiple The clamping post is distributed in the outside of relay assembly, and multiple The clamping post is arranged in the inside left and right sides of mounting groove, multiple The clamping hole is opened in the left and right sides of arc baffle, the arc baffle lower part is arranged in the inside of mounting groove, and the clamping post and clamping hole are one-to-one corresponding.The utility model discloses a kind of magnetic latching relays with three-phase intelligent electric meter, and mounting groove is increased at voltage detection terminal place of upper cover installation, by clamping post and clamping hole, arc baffle is installed in the inside of mounting groove, increase creeping distance and electrical clearance, increase withstand voltage capacity, reduce breakdown risk, so that relay assembly is more reliable.

Description

Technical Field

[0001] This utility model relates to the field of magnetic latching relay technology, and in particular to a magnetic latching relay for a three-phase smart meter with an arc-blocking plate. Background Technology

[0002] Magnetic latching relays are a new type of relay developed in recent years. They are automatic switches, and like other electromagnetic relays, they automatically connect and disconnect circuits. However, unlike other relays, the normally closed or normally open state of a magnetic latching relay depends entirely on the action of a permanent magnet. The switching state transition is triggered by a pulse electrical signal of a certain width, and it is widely used in three-phase smart meters.

[0003] Chinese Patent Publication No. CN206480562U discloses a three-phase magnetic latching relay, including a housing, a magnetic circuit assembly, three sets of contact assemblies, and push plates. The contact assemblies are driven by the magnetic circuit assembly through the push plates. The housing includes a base and a top cover, and the housing includes at least three mounting holes that penetrate the base and the top cover. This invention lacks an effective protective device, making the magnetic latching relay susceptible to arcing and damage. Utility Model Content

[0004] The main objective of this invention is to provide a magnetic latching relay for a three-phase smart meter with an arc-blocking plate, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a magnetic latching relay for a three-phase smart meter with an arc-blocking plate, comprising a relay assembly, wherein a protection mechanism is provided on the outside of the relay assembly; The protection mechanism includes a mounting slot, multiple locking pins, multiple locking holes, and an arc-blocking plate. The mounting slot is located on the outside of the relay assembly. The multiple locking pins are distributed on the outside of the relay assembly and are located on the left and right sides inside the mounting slot. The multiple locking holes are located on the left and right sides of the arc-blocking plate. The lower part of the arc-blocking plate is located inside the mounting slot. The locking pins and locking holes correspond one-to-one.

[0006] Preferably, the relay assembly includes an upper cover, a relay body, and a base. The relay body is installed inside the base, the upper cover is disposed on the upper part of the relay body, and the lower part of the upper cover is connected to the base by a snap fastener.

[0007] Compared with the prior art, the present invention has the following beneficial effects: 1. The voltage detection terminal is in the form of a sheet and is installed in a groove on the outside of the upper cover. The voltage detection terminal has one upper contact arm and two lower contact arms. The upper contact arm is suspended above the upper cover and is used to contact the PCP board. The two lower contact arms are connected to the stationary plate in the relay body. Multi-point contact reduces contact impedance and makes the contact more reliable. A mounting groove is added at the location where the voltage detection terminal is installed on the upper cover. The arc baffle is installed inside the mounting groove through the locking post and locking hole, which increases the creepage distance and electrical clearance, increases the withstand voltage, reduces the risk of breakdown, and makes the relay assembly more reliable. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of a magnetic latching relay with an arc-blocking plate for a three-phase smart meter according to the present invention. Figure 2 This is a schematic diagram of the internal structure of a magnetic latching relay for a three-phase smart meter with an arc-blocking plate according to this utility model.

[0009] In the diagram: 1. Relay assembly; 101. Top cover; 102. Relay body; 103. Base; 2. Protection mechanism; 201. Mounting slot; 202. Locking post; 203. Locking hole; 204. Arc baffle. Detailed Implementation

[0010] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0011] like Figure 1-2 As shown, a magnetic latching relay for a three-phase smart meter with an arc-blocking plate includes a relay assembly 1. A protection mechanism 2 is provided on the outside of the relay assembly 1. The protection mechanism 2 includes a mounting groove 201, multiple locking pins 202, multiple locking holes 203, and an arc-blocking plate 204. The mounting groove 201 is located on the outside of the relay assembly 1. The multiple locking pins 202 are distributed on the outside of the relay assembly 1 and are located on the left and right sides inside the mounting groove 201. The multiple locking holes 203 are located on the left and right sides of the arc-blocking plate 204. The lower part of the arc-blocking plate 204 is located inside the mounting groove 201. The locking pins 202 and locking holes 203 correspond one-to-one. The voltage detection terminal is in the form of a sheet, which is existing technology. It is installed in a groove on the outside of the upper cover 101. The voltage detection terminal has one upper contact arm and two lower contact arms. The upper contact arm is suspended above the upper cover 101 and is used to contact the PCP board. The two lower contact arms are connected to the stationary plate in the relay body 102. Multi-point contact reduces contact impedance and makes the contact more reliable. A mounting groove 201 is added to the upper cover 101 where the voltage detection terminal is installed. The arc baffle 204 is installed in the mounting groove 201 through the locking post 202 and the locking hole 203, which increases the creepage distance and electrical clearance, increases the withstand voltage, reduces the risk of breakdown, and makes the relay assembly 1 more reliable.

[0012] The relay assembly 1 includes an upper cover 101, a relay body 102, and a base 103. The relay body 102 is installed inside the base 103, and the upper cover 101 is located on the upper part of the relay body 102. The lower part of the upper cover 101 is connected to the base 103 by a snap fastener. The relay assembly 1 is prior art and adopts a three-phase magnetic latching relay disclosed in Chinese Patent Publication No. CN206480562U.

[0013] Working principle: The voltage detection terminal is in the form of a sheet, which is existing technology. It is installed in a groove on the outside of the upper cover 101. The voltage detection terminal has one upper contact arm and two lower contact arms. The upper contact arm is suspended above the upper cover 101 and is used to contact the PCP board. The two lower contact arms are connected to the stationary plate in the relay body 102. Multi-point contact reduces contact impedance and makes the contact more reliable. A mounting groove 201 is added to the upper cover 101 where the voltage detection terminal is installed. The arc baffle 204 is installed in the mounting groove 201 through the locking post 202 and the locking hole 203, which increases the creepage distance and electrical clearance, increases the withstand voltage, reduces the risk of breakdown, and makes the relay assembly 1 more reliable.

[0014] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic latching relay for a three-phase smart meter with an arc-blocking plate, comprising a relay assembly (1), characterized in that: The relay assembly (1) is provided with a protection mechanism (2) on its outer side; The protection mechanism (2) includes a mounting groove (201), multiple locking pins (202), multiple locking holes (203), and an arc-blocking plate (204). The mounting groove (201) is located on the outside of the relay assembly (1). The multiple locking pins (202) are distributed on the outside of the relay assembly (1), and the multiple locking pins (202) are located on the left and right sides inside the mounting groove (201). The multiple locking holes (203) are located on the left and right sides of the arc-blocking plate (204). The lower part of the arc-blocking plate (204) is located inside the mounting groove (201). The locking pins (202) and the locking holes (203) correspond one-to-one.

2. The magnetic latching relay for a three-phase smart meter with an arc-blocking plate according to claim 1, characterized in that: The relay assembly (1) includes an upper cover (101), a relay body (102) and a base (103). The relay body (102) is installed inside the base (103). The upper cover (101) is located on the upper part of the relay body (102). The lower part of the upper cover (101) is connected to the base (103) by a snap fastener.

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