一种具有储能缓冲功能的永磁机构

Abstract

本实用新型涉及开关电器技术领域，公开了一种具有储能缓冲功能的永磁机构，在永磁机构合闸开始时，压缩弹簧向动铁芯提供合闸推力，压缩弹簧的弹性势能转换为动铁芯的动能，提高在合闸前半段行程时永磁机构的合闸速度；当永磁机构合闸的后半段行程，压缩弹簧与动铁芯脱离接触，不向动铁芯提供合闸推力，防止合闸结束时动铁芯的速度过快，提高永磁机构的寿命；在永磁机构分闸的后半段行程，压缩弹簧向动铁芯提供分闸缓冲力，动铁芯的动能转换为压缩弹簧的弹性势能并储存起来，降低动铁芯的运动速度，对永磁机构进行分闸缓冲，防止永磁机构产生分闸弹跳，提高永磁机构的可靠性与寿命。

Claims

1. A permanent magnet mechanism having an energy storage buffering function, characterized by: Includes housing (1), permanent magnet (2), rear baffle (3), main shaft (4), opening spring (5), stationary iron core (6), moving iron core (7), electromagnetic coil (8), moving iron core slot (9), fixed cylinder (10), fixed cylinder baffle (11), compression spring (12), spring boss (13), fixed ring (14), connecting rod (15), connecting rod crank arm (16). The housing (1) is a cylindrical barrel structure with one end open. The rear baffle (3) is fixed to the rear side of the housing (1). The stationary iron core (6) is installed inside the housing (1) and fixedly connected to the housing (1). Guide holes are opened on both the housing (1) and the rear baffle (3). The main shaft (4) passes through the guide holes on the housing (1) and the rear baffle (3), and the main shaft (4) can slide back and forth inside the housing (1). The main shaft (4) is fixedly connected to the moving iron core (7). The trip spring The spring (5) is located outside the main shaft (4) and inside the stationary iron core (6). The two ends of the opening spring (5) are limited and compressed by the housing (1) and the moving iron core (7) respectively. The electromagnetic coil (8) is located outside the sliding area of ​​the stationary iron core (6) and the moving iron core (7) and inside the housing (1) and the rear baffle (3). The permanent magnet (2) is located inside the housing (1) and is fixed on the housing (1). The moving iron core (7) is provided with a moving iron core slot (9). The fixing cylinder (10) is mounted on the rear baffle (3). A compression spring (12) is installed inside the fixing cylinder (10). A spring boss (13) is connected to the end of the compression spring (12). One end of the fixing cylinder (10) is a fixing cylinder baffle (11), which can limit the spring boss (13) and prevent the spring boss (13) from popping out of the fixing cylinder (10). The spring boss (13) is connected to the connecting rod (15), and the connecting rod (15) can rotate up and down around the spring boss (13). The connecting rod (15) is connected to the fixing ring (14), and the connecting rod (15) can rotate up and down around the fixing ring (14). The fixing ring (14) is sleeved on the main shaft (4), and the fixing ring (14) can slide up and down on the main shaft (4). A connecting rod crank arm (16) is provided on the side of the connecting rod (15) near the moving iron core slot (9), and the connecting rod crank arm (16) can extend into the moving iron core slot (9).

2. The permanent magnetic mechanism with energy storage buffering function according to claim 1, characterized in that: The fixed cylinder (10), fixed cylinder baffle (11), compression spring (12), spring boss (13), and connecting rod (15) are symmetrically arranged on both sides of the main shaft (4).

3. The permanent magnet mechanism with energy storage buffering function according to claim 1, characterized in that: The shell (1), the stationary iron core (6), and the moving iron core (7) are all made of ferromagnetic materials.

4. The permanent magnet mechanism with energy storage buffering function according to claim 1, characterized in that: The rear baffle (3) is made of non-magnetic material.

5. The permanent magnet mechanism with energy storage buffering function according to claim 4, characterized in that: The rear baffle (3) is made of aluminum alloy.

6. The permanent magnet mechanism with energy storage buffering function according to claim 1, characterized in that: The main shaft (4) and the moving iron core (7) have corresponding fixing holes, and the two can be fixed together by elastic pins.

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