Release

Abstract

A release belongs to the technical field of circuit breakers. Comprising a magnet yoke assembly, a static iron core, a movable iron core, a magnetic conductive plate, a coil and a pressing plate, the static iron core is fixedly arranged above the magnet yoke assembly, the movable iron core can move in an inner containing cavity of the magnet yoke assembly, the pressing plate is fixedly arranged at the end, away from the static iron core, of the movable iron core, and the coil is wound around the outer side of the magnet yoke assembly. The magnetic circuit breaker is characterized by further comprising a conical spring, the conical spring is arranged between the pressing plate and the magnetic conductive plate, the large end of the conical spring is fixed on the pressing plate, and the small end of the conical spring abuts against the magnet yoke assembly. The electromagnetic release has the advantages that the gap between the magnet yoke assembly and the movable iron core can be always kept in a small range, so that the reset stability of the electromagnetic release is ensured, and the action accuracy of the circuit breaker is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the circuit breaker technical field, specifically related to a tripping device for intelligent circuit breaker. BACKGROUND

[0002] With the development of intelligent technology, the demand for intelligent circuit breaker is higher and higher, and higher requirements are put forward to its reliability. Electromagnetic tripping device as an important execution element of intelligent circuit breaker, the reliability of its action is directly related to the accuracy of the action of intelligent circuit breaker. The traditional electromagnetic tripping device, based on its simple structure, low processing cost advantage, has been the preferred scheme of electromagnetic tripping device in the intelligent circuit breaker in the market at present, but the stability of the action of the electromagnetic tripping device under the traditional structure has been a difficult problem that has plagued the performance of intelligent circuit breaker, and the current traditional solution is generally realized by improving the output ability of the control system, but the cost of this scheme is higher.

[0003] Since the factors that have greater influence on the action stability of electromagnetic tripping device are mainly the gap between the magnetic conductive plate and the moving iron core, if the gap is too small, it is easy to be stuck during the action. In view of this, it is necessary to reasonably improve the structure of the existing tripping device. UTILITY MODEL CONTENTS

[0004] The utility model discloses a task is to provide a structure simple, cost is low, convenient installation, action reliability high tripping device, and it is favorable to guarantee the stability of tripping device reset through the setting conical spring and change the spring elasticity, improve the accuracy of circuit breaker action.

[0005] The utility model discloses a task is thus completed, a tripping device, including the magnetic yoke subassembly, static iron core, moving iron core, coil, pressing plate, static iron core fixedly arranged at the top of magnetic yoke subassembly, moving iron core can move in the internal cavity of magnetic yoke subassembly, pressing plate fixedly arranged on the one end of moving iron core far from static iron core, coil is around setting at the outside of magnetic yoke subassembly, still including a conical spring, the conical spring is placed between the pressing plate and magnetic yoke subassembly and is fixed on the pressing plate with big end, and the small end is in abutment on the magnetic yoke subassembly.

[0006] In a specific embodiment of the utility model, the magnetic yoke subassembly includes a support and a magnetic conductive plate, and the magnetic conductive plate is fixedly arranged below the support and forms a gap between the moving iron core.

[0007] In another specific embodiment of the utility model, the coil is wound around the outside of the support.

[0008] In another specific embodiment of the utility model, the small end of the conical spring abuts against the connection between the boss portion and the fixed portion.

[0009] In another specific embodiment of the utility model, the small end of the conical spring abuts against the connection between the boss portion and the fixed portion.

[0010] The utility model has the beneficial effects that: the conical spring is arranged between the pressing plate and the magnetic conducting plate, the spring stiffness of the conical spring is small in the release state, the spring force is small, the reset of the magnetic release device is greatly helped, the structure can automatically reset the moving iron core, the gap between the magnetic conducting plate and the moving iron core is kept in a small range, the stability of the reset of the electromagnetic release device is ensured, and the accuracy of the action of the circuit breaker is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an embodiment structure schematic view of the release device.

[0012] In the figure: 1. magnetic yoke assembly, 11. support, 12. magnetic conducting plate, 121. fixed portion, 122. step portion, 2. static iron core, 3. moving iron core, 4. coil, 5. conical spring, 6. pressing plate. DETAILED DESCRIPTION

[0013] The embodiment is described below in combination with the drawings, but the description of the embodiment is not a limitation on the technical scheme, and any formal but not substantial change according to the concept of the utility model should be regarded as the protection scope of the utility model.

[0014] In the following description, the directional or positional concepts of up, down, left, right, front and back are all based on the position shown in the drawings, and are only provided for the technical scheme of the utility model and simplifying the description, so they should not be understood as a special limitation on the technical scheme of the utility model. Figure 1

[0015] Please refer to Figure 1 , the utility model relates to a kind of release devices, including magnetic yoke assembly 1, static iron core 2, moving iron core 3, coil 4, pressing plate 6, the static iron core 2 is fixedly arranged above magnetic yoke assembly 1, the moving iron core 3 can be moved in the internal cavity of magnetic yoke assembly 1, pressing plate 6 is fixedly arranged on the end of moving iron core 3 away from static iron core 2, coil 7 is wound on the outside of magnetic yoke assembly 1.

[0016] ​The utility model discloses a magnetic latching component, including fixed iron core 2, movable iron core 3, coil 4, magnetic yoke assembly 1, pressing plate 6 and cone spring 5, fixed iron core 2 and movable iron core 3 are connected through magnetic yoke assembly 1, coil 4 is arranged on movable iron core 3, and the movable iron core 3 is connected with pressing plate 6.

[0017] Specifically, the magnetic yoke assembly 1 includes a bracket 11 and a magnetic plate 12, the magnetic plate 12 is fixedly arranged below the bracket 11 and has a gap between the magnetic plate 12 and the movable iron core 3. In this example, the coil 4 is wound outside the bracket 11.

[0018] Further, the magnetic plate 12 includes a fixed part 121 and a hollow boss part 122, the boss part 122 is arranged at the middle position of the fixed part 121 and is sleeved on one end of the movable iron core 3, and a gap is formed between the hollow inner wall of the boss part 122 and the movable iron core 3.

[0019] Further, the small end of the cone spring 5 is abutted on the connection between the boss part 122 and the fixed part 121.

[0020] Since the shape of the cone spring 5 is conical, the small end is used for fixing on the magnetic plate 12, and the cooperation gap is small to ensure the axial concentricity, and the large end is fixed on the pressing plate 6, and the cooperation gap is also small to ensure the axial concentricity.

[0021] When the cone spring 5 is in a compressed state, when the gap between the magnetic plate 12 and the movable iron core 3 deviates to one side, an opposite unbalanced force is generated in the cone spring 5, and the unbalanced force is greater than the friction force between the movable iron core 3 and the fixed iron core 2, so that the movable iron core 3 is automatically reset, the gap between the magnetic plate 12 and the movable iron core 3 is always kept in a small range, thereby ensuring the stability of the electromagnetic release reset, and the accuracy of the breaker operation is improved.

Claims

1. A kind of tripping device, including magnetic yoke assembly (1), static core (2), moving core (3), coil (4), pressing plate (6), static core (2) is fixedly arranged on the top of magnetic yoke assembly (1), moving core (3) can move in the internal cavity of magnetic yoke assembly (1), pressing plate (6) is fixedly arranged on the end of moving core (3) away from static core (2), coil (4) is wound on the outside of magnetic yoke assembly (1), it is characterized by: The magnet yoke assembly (1) comprises a support (11) and a magnetic conducting plate (12), the magnetic conducting plate (12) is fixedly arranged below the support (11) and a gap is formed between the magnetic conducting plate (12) and the moving iron core (3).

2. A release according to claim 1, characterised in that: The coil (4) is arranged outside the support (11).

3. A release according to claim 2, characterised in that: The magnetic conducting plate (12) comprises a fixed part (121) and a hollow boss part (122), the boss part (122) is arranged at the middle position of the fixed part (121) and is sleeved on one end of the moving iron core (3), and a gap is formed between the hollow inner wall of the boss part (122) and the moving iron core (3).

4. A release according to claim 2, characterised in that: The small end of the conical spring (5) is abutted against the connection position of the boss part (122) and the fixed part (121).

5. A release according to claim 4, characterised in that: ​

Images