一种双推杆驱动型快速切换继电器

Abstract

本实用新型公开了一种双推杆驱动型快速切换继电器，涉及继电器的技术领域，具有结构更为简化、制造成本更低等效果。第一推杆和第二推杆的根部固定连接并受电磁线圈驱动；第一推杆与U型架的一侧臂相连，第二推杆与U型架的另一侧臂相连，触点杠杆通过一固定于壳体内的支点可摆动安装于壳体内；弹性件弹性紧压触点杠杆，对触点杠杆的左端施加使其向下摆动的弹力；U型架的架身上设置有向触点杠杆方向凸起的凸起部。省去了传统继电器中复杂的永磁摆、多级杠杆等冗余部件，简化了继电器的整体结构；整体结构部件数量减少，降低了加工精度要求和装配难度，从而降低制造成本，同时减少了机械磨损点，延长了继电器的使用寿命。

Claims

1. A double push rod driving type quick switching relay, characterized by: It includes a housing (1) and an electromagnetic coil (2) installed inside the housing (1), a drive mechanism, a contact switching mechanism, a first stationary contact (3), and a second stationary contact (4); The driving mechanism includes: A double-acting push rod assembly having a first push rod (6) and a second push rod (7) that can be pushed out to the left or right along the axial direction, the roots of the first push rod (6) and the second push rod (7) being fixedly connected and driven by the electromagnetic coil (2); The U-shaped frame (5) has a frame body (51) and side arms (52) located on both sides of the frame body (51); the first push rod (6) is connected to one side arm (52) of the U-shaped frame (5), and the second push rod (7) is connected to the other side arm (52) of the U-shaped frame (5); The contact switching mechanism includes: A conductive contact lever (8) is oscillatingly mounted inside the housing (1) via a fulcrum (11) fixed inside the housing (1); An elastic element (9) is provided at the fulcrum (11) and elastically presses against the contact lever (8), applying a spring force to the left end of the contact lever (8) to make it swing downward. The first stationary contact (3) is fixedly installed inside the housing (1) and maintains contact and conduction with the right end of the contact lever (8); The second stationary contact (4) is fixedly installed inside the housing (1) and located directly below the left end of the contact lever (8); The frame (5) of the U-shaped frame (5) is provided with a protrusion (53) that protrudes in the direction of the contact lever (8). When the electromagnetic coil (2) drives the first push rod (6) and the second push rod (7) to move to the right limit position, the protrusion (53) of the U-shaped frame (5) presses against the right end of the contact lever (8), overcoming the elastic force of the elastic element (9) and causing the contact lever (8) to swing around the fulcrum (11), and its left end tilts up and disengages from the second stationary contact (4). When the electromagnetic coil (2) drives the first push rod (6) and the second push rod (7) to move to the left limit position, the protrusion (53) of the U-shaped frame (5) disengages from the contact lever (8), and the contact lever (8) swings back around the fulcrum (11) under the elastic force of the elastic element (9), and its left end falls and contacts the second stationary contact (4) to conduct electricity.

2. The dual push rod actuated quick changeover relay of claim 1, wherein: A groove (81) is formed on the contact lever (8) at the right position of the fulcrum (11). When the relay is in the switching state, the protrusion (53) switches between contact between the groove and the opening of the groove (81).

3. The dual push rod actuated quick changeover relay according to claim 1 or 2, characterized in that: The elastic element (9) is a torsion spring, which is fitted on the fulcrum (11); one end of the torsion spring is fixed to the housing (1), and the other end is elastically pressed against the left end of the contact lever (8).

4. The dual push rod actuated quick changeover relay according to claim 1 or 2, characterized in that: The protrusions (53) on the U-shaped frame (5) are hemispherical, cylindrical or wedge-shaped.

5. The dual push rod actuated quick changeover relay according to claim 1 or 2, characterized in that: The ends of the first push rod (6) and the second push rod (7) include a positioning post (61) and an outer ring rib (62). The side arm (52) of the U-shaped frame (5) is provided with positioning holes (54) at both ends. The positioning post (61) is inserted into the positioning hole (54), and the outer ring rib (62) abuts against the outside of the opening of the positioning hole (54).

6. The dual push rod actuated quick changeover relay according to claim 1 or 2, characterized in that: The electromagnetic coil (2) comprises an insulating framework (21) and a core (22), the push rod penetrates the insulating framework (21) and is connected with the core (22) in linkage.

7. The dual push rod actuated quick changeover relay according to claim 1 or 2, characterized in that: The right end of the contact lever (8) is connected with a wire (31) which keeps conducting with the first static contact (3).

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