Miniature electromagnetic release

Abstract

The utility model relates to a miniature electromagnetic release comprising an armature, and the rear end of the armature is provided with limiting parts protruding towards the left side and the right side; the magnetic steel fixing piece is fixed on the base, and a limiting table used for limiting and blocking the front of the limiting part is arranged on the magnetic steel fixing piece in a protruding mode; wherein the armature is arranged above the magnetic steel fixing piece, and the rear end of the armature is located between the two limiting parts. The beneficial effects of the utility model are that when the armature swings, the spacing part can abut against and be slidably connected to the rear side of the spacing bench, and the spacing part and the spacing bench cooperate with each other to effectively limit the offset generated when the armature moves, so that the stability is improved, and the structure is simple, small and exquisite, and can be suitable for a miniature tripper.

Description

Technical Field

[0001] This utility model relates to the field of trip unit technology, and in particular to a miniature electromagnetic trip unit. Background Technology

[0002] An electromagnetic trip unit is a type of trip unit that only provides magnetic protection, i.e., short-circuit protection. In fact, it is a magnetic return force. When the current is large enough, the magnetic field force generated overcomes the reaction force, the spring attracts the armature, and strikes the traction rod, thereby driving the mechanism to cut off the circuit.

[0003] On January 11, 2024, the applicant filed an application for an electromagnetic trip device, with authorization announcement number CN221508088U. During subsequent research and development, the applicant discovered that because the armature is only connected and limited by a tension spring at its tail end, and the tail end connected to the tension spring is smaller than the gap between the support frame, the armature will slide forward or backward and swing when subjected to the action of the energized coil or the tension spring. This causes the armature to easily deviate during the tripping action of the electromagnetic trip device, thus affecting the stability of the electromagnetic trip device during operation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a miniature electromagnetic trip device to solve the above problems.

[0005] The technical solution of this utility model is achieved as follows: a miniature electromagnetic trip unit, comprising,

[0006] The armature has a limiting part protruding to the left and right sides at its rear end;

[0007] A magnetic steel fixing component is fixed on a base, and a limiting platform protruding from the magnetic steel fixing component is provided for limiting and blocking the front of the limiting part;

[0008] The armature is positioned above the magnet fixing member, and the rear end of the armature is located between the two limiting parts.

[0009] By adopting the above technical solution, when the armature swings, the limiting part can abut against and slide on the rear side of the limiting platform. The cooperation between the limiting part and the limiting platform can effectively limit the deviation of the armature during operation, thereby improving stability. Moreover, the structure is simple and compact, and can be applied to miniature trip devices.

[0010] The present invention is further configured such that: the limiting platform protrudes from the upper side of the magnet fixing member and extends to the rear side of the magnet fixing member, and the limiting platform is located on the front side of the limiting part.

[0011] By adopting the above technical solution, the limiting platform can effectively cooperate with the limiting part, improving the stability of the armature during operation.

[0012] The present invention is further configured such that the lower rear end of the limiting platform is connected to the rear side of the magnetic steel fixing member through a first inclined surface.

[0013] By adopting the above technical solution, when the armature is in the disengaged state, the first inclined surface can cooperate with the limiting part to limit the armature, making the limiting of the armature more stable.

[0014] The present invention is further configured such that: a connector is fixed inside the magnet fixing component, the upper end of the connector protrudes from the upper side of the magnet fixing component, the upper end of the connector is located in front of the limiting platform, and hinge portions protrude on both sides of the armature to abut against and rotate with the front side of the connector, and the hinge portions are provided with a second inclined surface for enabling the armature to rotate smoothly.

[0015] By adopting the above technical solution, the armature rotates around the contact point between the hinge and the connecting part as the axis when it rotates. The second inclined surface makes the rotation of the armature easier.

[0016] The present invention is further configured such that: the armature is provided with a through hole for connecting a tension spring, and the through hole is located on the central axis of the armature.

[0017] By adopting the above technical solution, the effect of the tension spring on the armature can be improved, enabling the tension spring to effectively drive the armature to rotate.

[0018] The present invention is further configured such that a notch is provided in the middle of the rear end of the armature for the tension spring to pass through.

[0019] By adopting the above technical solution, the installation of the tension spring can be made more convenient, and the material used for the armature can be reduced, thus reducing costs.

[0020] The present invention is further configured such that the height of the limiting platform is not less than the thickness of the limiting part.

[0021] By adopting the above technical solution, the limiting platform achieves a better and more stable blocking and limiting effect on the limiting part. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure 2 ;

[0025] Figure 3 Cross-sectional view of the structure of a specific embodiment of this utility model Figure 1 (Not disengaged);

[0026] Figure 4 Cross-sectional view of the structure of a specific embodiment of this utility model Figure 2 (Disengaged state). Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-4 As shown, this utility model discloses a miniature electromagnetic trip unit, comprising,

[0029] The armature 1 has a limiting part 10 protruding to the left and right sides at its rear end;

[0030] Magnet fixing component 2, which is fixed on the base 3, and a limiting platform 20 protruding from the magnet fixing component 2 for limiting and blocking the front of the limiting part 10;

[0031] The armature 1 is located above the magnet fixing member 2, and the rear end of the armature 1 is located between the two limiting parts 10.

[0032] By adopting the above technical solution, when the armature 1 swings, the limiting part 10 can abut against and slide on the rear side of the limiting platform 20. The cooperation between the limiting part 10 and the limiting platform 20 can effectively limit the deviation of the armature 1 during operation, thereby improving stability. Moreover, the structure is simple and compact, and can be applied to miniature trip devices.

[0033] In this embodiment of the utility model, the limiting platform 20 protrudes from the upper side of the magnet fixing member 2 and extends to the rear side of the magnet fixing member 2. The limiting platform 20 is located in front of the limiting part 10.

[0034] By adopting the above technical solution, the limiting platform 20 can effectively cooperate with the limiting part 10, thereby improving the stability of the armature 1 during operation.

[0035] In this embodiment of the utility model, the lower rear end of the limiting platform 20 is connected to the rear side of the magnetic steel fixing member 2 by a first inclined surface 200.

[0036] By adopting the above technical solution, when the armature 1 is in the disengaged state, the first inclined surface 200 can cooperate with the limiting part 10 to limit the armature 1, making the limiting of the armature 1 more stable.

[0037] In this embodiment of the utility model, a connector 4 is fixed inside the magnet fixing member 2. The upper end of the connector 4 protrudes from the upper side of the magnet fixing member 2. The upper end of the connector 4 is located in front of the limiting platform 20. Both sides of the armature 1 are provided with hinge parts 11 that abut against and rotate with the front side of the connector 4. The hinge parts 11 are provided with a second inclined surface 110 for enabling the armature 1 to rotate smoothly.

[0038] By adopting the above technical solution, when the armature 1 rotates, it rotates around the contact point between the hinge part 11 and the connecting member 4 as the axis. By setting the second inclined surface 110, the rotation of the armature 1 can be made easier.

[0039] In this embodiment of the utility model, the armature 1 is provided with a through hole 12 for connecting a tension spring, and the through hole 12 is located on the central axis of the armature 1.

[0040] By adopting the above technical solution, the effect of the tension spring on the armature 1 can be improved, so that the tension spring can effectively drive the armature 1 to rotate.

[0041] In this embodiment of the utility model, a notch 13 is provided at the middle of the rear end of the armature 1 for the tension spring to pass through.

[0042] By adopting the above technical solution, the installation of the tension spring can be made more convenient, and the material used for the armature 1 can be reduced, thus reducing costs.

[0043] In this embodiment of the utility model, the height of the limiting platform 20 is not less than the thickness of the limiting part 10.

[0044] By adopting the above technical solution, the limiting platform achieves a better and more stable blocking and limiting effect on the limiting part.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A miniature electromagnetic trip unit, characterized in that, include, The armature (1) has a limiting part (10) protruding to the left and right sides at its rear end. Magnet fixing component (2), the magnet fixing component (2) is fixed on the base (3), and the magnet fixing component (2) has a protruding limiting platform (20) for limiting and blocking the front of the limiting part (10). The armature (1) is located above the magnet fixing member (2), and the rear end of the armature (1) is located between the two limiting parts (10).

2. The miniature electromagnetic trip unit according to claim 1, characterized in that, The limiting platform (20) protrudes from the upper side of the magnet fixing member (2) and extends to the rear side of the magnet fixing member (2). The limiting platform (20) is located in front of the limiting part (10).

3. A miniature electromagnetic trip unit according to claim 2, characterized in that, The lower rear end of the limiting platform (20) is connected to the rear side of the magnetic steel fixing member (2) by a first inclined surface (200).

4. A miniature electromagnetic trip unit according to claim 1, characterized in that, The magnet fixing member (2) has a connector (4) fixed inside. The upper end of the connector (4) protrudes from the upper side of the magnet fixing member (2). The upper end of the connector (4) is located in front of the limiting platform (20). Both sides of the armature (1) are provided with hinge parts (11) that abut against and rotate with the front side of the connector (4). The hinge parts (11) are provided with a second inclined surface (110) for the armature (1) to rotate smoothly.

5. A miniature electromagnetic trip unit according to claim 1, characterized in that, The armature (1) has a through hole (12) for connecting a tension spring, and the through hole (12) is located on the central axis of the armature (1).

6. A miniature electromagnetic trip unit according to claim 1, characterized in that, The armature (1) has a notch (13) at the middle of its rear end for the tension spring to pass through.

7. A miniature electromagnetic trip unit according to claim 1, characterized in that, The height of the limiting platform (20) is not less than the thickness of the limiting part (10).

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