Armature assembly with reliable action

Abstract

The utility model relates to an armature assembly with reliable action. The technical problem to be solved by the utility model is to provide an armature assembly with reliable action. The technical scheme adopted by the utility model is as follows: the electromagnetic relay comprises an armature, an armature support, an armature fixing shaft, an armature rotating shaft, a pre-tightening spring and a clamp spring, the armature comprises an armature upper plate and an armature side plate, the armature side plate is provided with an armature action butt joint bulge, an armature action butt joint port is arranged in the armature action butt joint bulge, and the clamp spring is arranged in the armature action butt joint port. And the bottom of the armature side plate is vertically bent outwards in sequence to form an armature transition part and an armature reinforcing part. The utility model has the advantages that the pre-tightening spring provides an initial pre-tightening force, so that the false operation caused by the influence of factors such as external impact, vibration or self gravity and the like on the armature when the armature does not act is effectively prevented, and the safety is higher; the clamp spring, the fixing shaft anti-rotation notch and the armature reinforcing part interact with one another, so that the armature is effectively prevented from moving left and right and rotating on the armature fixing shaft after frequent rotating actions.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker armatures, in particular to an armature assembly with reliable action. Background Art

[0002] The circuit breaker armature is an important component of the circuit breaker. Its main function is to trip the circuit breaker through electromagnetic effect when overload, short circuit and other faults occur, thereby protecting the safety of circuits and electrical equipment. The existing circuit breaker armature is usually fixed to the armature bracket through a rotating shaft, and rotates with the rotating shaft when in operation. In actual use, it is found that it has the following defects: 1. Due to the lack of a pre-tightening device, it is easy to cause the armature to malfunction if it is subjected to a large external impact or vibration, and the safety is poor; 2. The armature is prone to shift left and right on the mounting shaft after frequent rotation, and the accuracy of the armature action is greatly reduced in the long run. In view of the above two points, the existing circuit breaker armature assembly is improved and optimized. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide an armature assembly with reliable operation.

[0004] The technical solution adopted by the reliable armature assembly of the utility model is characterized in that it includes an armature, an armature bracket, an armature fixed shaft fixed on the circuit breaker housing, an armature rotating shaft, a preload spring and a retaining spring, the armature includes an armature upper plate and an armature side plate, the armature side plate is provided with an armature action docking protrusion, the armature action docking protrusion is provided with an armature action docking interface, the bottom of the armature side plate is vertically bent outward in sequence to form an armature transition portion and an armature reinforcement portion, an armature positioning port for installing and positioning the retaining spring is formed between the armature transition portion and the armature reinforcement portion, the front end of the armature upper plate is extended and bent to form the armature action portion, the armature side plate is provided with an armature first through hole for the armature rotating shaft to pass through, a spring first positioning hole and an armature second through hole for the armature fixed shaft to pass through, the armature reinforcement portion is provided with an armature third through hole communicating with the armature second through hole, and the armature fixed shaft is provided with a fixed shaft clamping groove for the retaining spring clamping;

[0005] The armature bracket includes a bracket side plate, which is provided with a bracket through hole communicated with the first through hole of the armature and a spring hanging interface. The pre-tightening spring is sleeved on the armature rotating shaft and placed on both sides of the armature. The first pin of the pre-tightening spring is fixed in the first positioning hole of the spring and its second pin is hung on the spring hanging interface.

[0006] A fixed shaft anti-rotation recess is provided on the cross section of the armature fixed shaft, and an armature anti-rotation protrusion corresponding to the fixed shaft anti-rotation recess is provided at the armature third through hole of the armature.

[0007] The armature rotating shaft includes a rotating shaft main body and a rotating shaft driving part arranged at both ends of the rotating shaft main body, the outer diameter of the rotating shaft main body is larger than the outer diameter of the rotating shaft driving part, the rotating shaft main body is inserted into the first through hole of the armature, and the preload spring is sleeved on the rotating shaft driving part.

[0008] The front end of the armature upper plate extends horizontally to form an armature limiting portion, the upper end of the bracket side plate is provided with a bracket limiting protrusion, and the bracket limiting protrusion is provided with a bracket limiting recess for swing limiting of the armature limiting portion.

[0009] The armature action docking protrusion is provided with armature action anti-dropping blocks at the upper and lower ends of the armature action docking interface.

[0010] The armature is integrally formed by stamping.

[0011] The advantages of the reliable armature assembly of the utility model are: the pre-tightening spring provides an initial pre-tightening force, which effectively prevents the armature from malfunctioning due to external impact, vibration or its own gravity when it is not in motion, and has higher safety; the interaction between the retaining spring, the anti-rotation recess of the fixed shaft and the armature reinforcement part effectively prevents the armature from shifting left and right and rotating on the armature fixed shaft after frequent rotation movements, and multiple limiters are performed on the retaining spring, which is more stable and reliable, and effectively ensures the accuracy of the armature movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 It is a structural schematic diagram of the armature assembly of the utility model with reliable action;

[0014] Figure 2 It is a structural schematic diagram of the armature of the utility model;

[0015] Figure 3 It is another structural schematic diagram of the armature of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the armature bracket of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the armature fixing shaft of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the armature rotating shaft of the utility model. DETAILED DESCRIPTION

[0019] like Figure 1-6 As shown, the utility model relates to an armature assembly with reliable operation, including an armature 1, an armature bracket 2, an armature fixing shaft 3 fixed to the circuit breaker housing, an armature rotating shaft 4, a preload spring 5 and a retaining spring 6, the armature 1 includes an armature upper plate 10 and an armature side plate 11, the armature side plate 11 is provided with an armature action docking protrusion 37, the armature action docking protrusion 37 is provided with an armature action docking port 38, the bottom of the armature side plate 11 is vertically bent outward in sequence to form an armature transition portion 12 and an armature reinforcement portion 13, an armature positioning opening 15 for mounting and positioning the retaining spring 6 is formed between the armature transition portion 12 and the armature reinforcement portion 13, the front end of the armature upper plate 10 is extended and bent to form an armature action portion 16, the armature side plate 11 is provided with an armature first through hole 17 for the armature rotating shaft 4 to pass through, a spring first positioning hole 18 and an armature second through hole 19 for the armature fixed shaft 3 to pass through, and the armature reinforcement portion 13 is provided with The armature third through hole 20 communicates with the armature second through hole 19, and the armature fixed shaft 3 is provided with a fixed shaft clamping groove 21 for the clamping of the retaining spring 6; the armature bracket 2 includes a bracket side plate 24, and the bracket side plate 24 is provided with a bracket through hole 25 communicated with the armature first through hole 17, and a spring hanging interface 26, the pre-tightening spring 5 is sleeved on the armature rotating shaft 4 and placed on both sides of the armature 1, the first pin of the pre-tightening spring 5 is fixed in the spring first positioning hole 18 and its second pin is hung on the spring hanging interface 26, the pre-tightening spring 5 provides an initial pre-tightening force, which effectively prevents the armature 1 from malfunctioning due to external impact, vibration or its own gravity when it is not in action, and has higher safety. The retaining spring 6 interacts with the armature reinforcement part 13, which effectively prevents the armature 1 from shifting left and right on the armature fixed shaft 3 after frequent rotation actions, and multiple limiters are performed on the retaining spring 6, which is more stable and reliable, and effectively ensures the accuracy of the armature action.

[0020] A fixed shaft anti-rotation recess 28 is provided on the cross section of the armature fixed shaft 3, and an armature anti-rotation protrusion 29 corresponding to the fixed shaft anti-rotation recess 28 is provided at the armature third through hole 20, which effectively prevents the armature from rotating and shifting on the armature fixed shaft after frequent rotation actions, and the action is more stable and reliable.

[0021] The armature rotating shaft 4 includes a rotating shaft main body 31 and a rotating shaft driving part 32 arranged at both ends of the rotating shaft main body 31. The outer diameter of the rotating shaft main body 31 is larger than the outer diameter of the rotating shaft driving part 32. The rotating shaft main body 31 is inserted into the first through hole 17 of the armature. The pre-tightening spring 5 is sleeved on the rotating shaft driving part 32 to limit the pre-tightening spring 5 so that the two pre-tightening springs 5 ​​can balance the force on the armature 1 and effectively prevent deviation.

[0022] The front end of the armature upper plate 10 extends horizontally to form an armature limiting portion 33, and the upper end of the bracket side plate 24 is provided with a bracket limiting protrusion 34, and the bracket limiting protrusion 34 is provided with a bracket limiting recess 35 for swinging limit of the armature limiting portion 33, which limits the movement amplitude of the armature 1 during the swinging action, thereby further improving safety.

[0023] The armature action docking protrusion 37 is provided with armature action anti-dropping blocks 39 at the upper and lower ends of the armature action docking port 38 to ensure the action reliability.

[0024] The armature 1 is integrally stamped and formed, and is easy to process.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. An armature assembly with reliable operation, characterized in that: The invention comprises an armature (1), an armature bracket (2), an armature fixing shaft (3) fixed on a circuit breaker housing, an armature rotating shaft (4), a preload spring (5) and a retaining spring (6); the armature (1) comprises an armature upper plate (10) and an armature side plate (11); the armature side plate (11) is provided with an armature action docking protrusion (37); an armature action docking port (38) is provided in the armature action docking protrusion (37); the bottom of the armature side plate (11) is vertically bent outward in sequence to form an armature transition portion (12) and an armature reinforcement portion (13); a spacer is formed between the armature transition portion (12) and the armature reinforcement portion (13); An armature positioning opening (15) is installed and positioned on the retaining spring (6), the front end of the armature upper plate (10) is extended and bent to form an armature actuating portion (16), the armature side plate (11) is provided with, from top to bottom, an armature first through hole (17) for the armature rotating shaft (4) to pass through, a spring first positioning hole (18) and an armature second through hole (19) for the armature fixed shaft (3) to pass through, the armature reinforcement portion (13) is provided with an armature third through hole (20) communicating with the armature second through hole (19), and the armature fixed shaft (3) is provided with a fixed shaft clamping groove (21) for clamping the retaining spring (6); The armature bracket (2) comprises a bracket side plate (24), the bracket side plate (24) being provided with a bracket through hole (25) communicating with the first armature through hole (17), and a spring hanging interface (26), the preload spring (5) being sleeved on the armature rotating shaft (4) and placed on both sides of the armature (1), the first pin of the preload spring (5) being fixed in the first spring positioning hole (18) and the second pin thereof being hung on the spring hanging interface (26).

2. The reliable armature assembly according to claim 1, characterized in that: A fixed shaft anti-rotation recess (28) extending through the cross section of the armature fixed shaft (3) is provided, and an armature anti-rotation protrusion (29) corresponding to the fixed shaft anti-rotation recess (28) is provided at the armature third through hole (20) of the armature reinforcement portion (13).

3. The reliable armature assembly according to claim 1, characterized in that: The armature rotating shaft (4) comprises a rotating shaft main body (31) and rotating shaft driving parts (32) arranged at two ends of the rotating shaft main body (31), the outer diameter of the rotating shaft main body (31) is larger than the outer diameter of the rotating shaft driving part (32), the rotating shaft main body (31) is inserted into the first armature through hole (17), and the preload spring (5) is sleeved on the rotating shaft driving part (32).

4. The reliable armature assembly according to claim 1, characterized in that: The front end of the armature upper plate (10) extends horizontally to form an armature limiting portion (33), the upper end of the bracket side plate (24) is provided with a bracket limiting protrusion (34), and the bracket limiting protrusion (34) is provided with a bracket limiting recess (35) for swing limiting of the armature limiting portion (33).

5. The reliable armature assembly according to claim 1, characterized in that: The armature action docking protrusion (37) is provided with armature action anti-dropping blocks (39) at the upper and lower ends of the armature action docking port (38).

6. The reliable armature assembly according to claim 1, characterized in that: The armature (1) is integrally stamped.

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