A breaking mechanism for a control and protection switch electrical apparatus

Abstract

The present invention discloses a breaking mechanism for a control and protection switch electrical appliance, which comprises a base and a cover plate. An electromagnetic mechanism and an operating mechanism are provided on the cover plate. A contact support passing through the cover plate is movably arranged in the base, and an electromagnetic pressure plate is provided on the contact support. The feature is that the electromagnetic pressure plate is linked with the electromagnetic mechanism and the operating mechanism and can drive the contact support to move up and down. The breaking mechanism for a control and protection switch electrical appliance provided by the present invention can be linked with the electromagnetic mechanism and the operating mechanism, has a simpler structure, saves more space, has a lower cost and can ensure the action accuracy of the contact support.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to a breaking mechanism for a control and protection switch electrical appliance. Background Art

[0002] Currently, the breaking mechanisms for control and protection switch electrical appliances provided on the market generally include a base and a cover plate. A contact support that penetrates through the cover plate is movably arranged inside the base. An electromagnetic pressing plate is provided on the contact support. The electromagnetic pressing plate realizes up and down movement through structures such as a coil, a moving iron core, and a static iron core, and then drives the contact support to move up and down. Such a breaking mechanism has a complex structure, occupies a large space, and has a high cost. Summary of the Invention

[0003] In view of the deficiencies of the background art, the technical problem to be solved by the present invention is to provide a breaking mechanism for a control and protection switch electrical appliance that can be linked with an electromagnetic mechanism and an operating mechanism, has a simpler structure, saves more space, has a lower cost, and can ensure the action accuracy of the contact support.

[0004] To this end, the present invention is implemented by adopting the following technical solutions:

[0005] A breaking mechanism for a control and protection switch electrical appliance includes a base and a cover plate. An electromagnetic mechanism and an operating mechanism are provided on the cover plate. A contact support that penetrates through the cover plate is movably arranged inside the base. An electromagnetic pressing plate is provided on the contact support. The feature is that: the electromagnetic pressing plate is linked with the electromagnetic mechanism and the operating mechanism and can drive the contact support to move up and down.

[0006] Further, the electromagnetic pressing plate includes a flat plate and a column arranged on the flat plate. The operating mechanism includes a housing and a tripping cam hinged to the housing. The convex block of the tripping cam is aligned with the upper end of the column. The electromagnetic mechanism includes a bracket and a pressing frame hinged to the bracket. The pressing frame is aligned with the upper ends on both sides of the electromagnetic flat plate.

[0007] Further, guide columns are provided on both sides of the column. Guide shafts are vertically provided on both sides of the cover plate. Guide through holes for the guide shafts to pass through are provided on the guide columns and the flat plate. A return spring is sleeved on the guide shaft between the flat plate and the cover plate.

[0008] Further, rivets are provided on the outer side of the pressing frame. The included angle formed by the central axis of the rivet and the flat plate is 60 - 120°.

[0009] After adopting the above technical solution, the bump of the tripping cam of the operating mechanism aligns with the upper end of the column. When the equipment is short-circuited, the tripping cam of the operating mechanism rotates clockwise to push the electromagnetic pressure plate and the contact support downward; the pressure frame on the electromagnetic mechanism aligns with the upper ends of both sides of the flat plate. When the equipment fails or is manually tripped, the electromagnetic mechanism disconnects, causing the pressure frame to rotate counterclockwise to push the electromagnetic pressure plate and the contact support downward. The structure is simpler, more space-saving, and lower in cost; moreover, the setting of the guide shaft, guide post, and guide through hole can ensure the perpendicularity of the electromagnetic pressure plate during up and down movement, strengthening the action accuracy of the electromagnetic pressure plate and the contact support; in addition, the included angle formed by the central axis of the rivet on the outer side of the pressure frame and the flat plate is 60 - 120°. The smaller the included angle range, the smaller the swing amplitude of the pressure frame, the smaller the force loss, and the better the force transmission efficiency acting on the electromagnetic pressure plate, thereby reducing the energy consumption of the electromagnetic mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention has the following drawings:

[0011] Figure 1 is a schematic structural diagram of the present invention;

[0012] Figure 2 is Figure 1 a schematic structural diagram of removing the housing of the operating mechanism;

[0013] Figure 3 is a three-dimensional structural diagram of the cover plate, electromagnetic pressure plate, and contact support in the present invention;

[0014] Figure 4 is a schematic structural diagram of the pressure frame and the electromagnetic pressure plate not in contact (a certain included angle formed by the central axis of the rivet and the flat plate) in the present invention;

[0015] Figure 5 is a schematic structural diagram of the pressure frame driving the electromagnetic pressure plate to move downward (another included angle formed by the central axis of the rivet and the flat plate) in the present invention.

[0016] Reference numerals: 1, base; 2, cover plate; 3, electromagnetic mechanism; 4, operating mechanism; 5, contact support; 6, electromagnetic pressure plate; 7, flat plate; 8, column; 9, housing; 10, tripping cam; 11, bracket; 12, pressure frame; 13, guide post; 14, guide shaft; 15, guide through hole; 16, return spring; 17, rivet. DETAILED DESCRIPTION OF THE INVENTION

[0017] As shown in the above-mentioned drawings, a breaking mechanism of a control and protection switch device provided by the present invention includes a base 1 and a cover plate 2. An electromagnetic mechanism 3 and an operating mechanism 4 are provided on the cover plate 2. A contact support 5 that penetrates the cover plate 2 is movably arranged in the base 1. An electromagnetic pressure plate 6 is provided on the contact support 5. It is characterized in that: the electromagnetic pressure plate 6 is linked with the electromagnetic mechanism 3 and the operating mechanism 4 and can drive the contact support 5 to move up and down. The electromagnetic pressure plate 6 includes a flat plate 7 and a column 8 arranged on the flat plate 7. The operating mechanism 4 includes a housing 9 and a tripping cam 10 hinged to the housing 9. The convex block of the tripping cam 10 is aligned with the upper end of the column 8. The electromagnetic mechanism 3 includes a bracket 11 and a pressure frame 12 hinged to the bracket 11. The pressure frame 12 is aligned with the upper ends of both sides of the electromagnetic flat plate 7. Guide columns 13 are provided on both sides of the column 8. Guide shafts 14 are vertically provided on both sides of the cover plate 2. Guide through holes 15 for the guide shafts 14 to pass through are provided on the guide columns 13 and the flat plate 7. A return spring 16 is sleeved on the guide shaft 14 between the flat plate 7 and the cover plate 2. A rivet 17 is provided on the outer side of the pressure frame 12. The included angle formed by the central axis of the rivet 17 and the flat plate 7 is 60 - 120°.

[0018] In this embodiment, the convex block of the tripping cam 10 of the operating mechanism 4 is aligned with the upper end of the column 8. When the equipment is short-circuited, the tripping cam 10 of the operating mechanism 4 rotates clockwise to push down the electromagnetic pressure plate 6 and the contact support 5; the pressure frame 12 on the electromagnetic mechanism 3 is aligned with the upper ends of both sides of the flat plate 7. When the equipment fails or is manually tripped, the electromagnetic mechanism 3 is disconnected to make the pressure frame 12 rotate counterclockwise to push down the electromagnetic pressure plate 6 and the contact support 5. The structure is simpler, more space-saving, and lower in cost; moreover, the settings of the guide shafts 14, the guide columns 13, and the guide through holes 15 can ensure the perpendicularity of the electromagnetic pressure plate 6 when moving up and down, and strengthen the action accuracy of the electromagnetic pressure plate 6 and the contact support 5; in addition, the included angle formed by the central axis of the rivet 17 on the outer side of the pressure frame 12 and the flat plate 7 is 60 - 120°. The smaller the included angle range, the smaller the swing amplitude of the pressure frame 12, the smaller the force loss, and the better the force transmission efficiency acting on the electromagnetic pressure plate 6, thereby making the energy consumption of the electromagnetic mechanism 3 lower.

[0019] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A breaking mechanism for a control and protection switch electrical appliance, comprising a base and a cover plate. An electromagnetic mechanism and an operating mechanism are provided on the cover plate. A contact support passing through the cover plate is movably arranged in the base, and an electromagnetic pressure plate is provided on the contact support. It is characterized in that: The electromagnetic pressing plate is linked with the electromagnetic mechanism and the operating mechanism to drive the contact support to move up and down. The electromagnetic pressing plate includes a flat plate and a column arranged on the flat plate. The operating mechanism includes a housing and a tripping cam hinged to the housing. The bump of the tripping cam is aligned with the upper end of the column. The electromagnetic mechanism includes a bracket and a pressing frame hinged to the bracket. The pressing frame is aligned with the upper ends on both sides of the electromagnetic flat plate. Guide columns are arranged on both sides of the column. Guide shafts are vertically arranged on both sides of the cover plate. Guide through holes for the guide shafts to pass through are arranged on the guide columns and the flat plate. A return spring is sleeved on the guide shaft between the flat plate and the cover plate. A rivet is arranged on the outer side of the pressing frame. The included angle formed by the central axis of the rivet and the flat plate is 60-120°.

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