CN210073738U

CN210073738U - Arm support for controlling protection switch

Info

Publication number: CN210073738U
Application number: CN201921055416.8U
Authority: CN
Inventors: 朱志蓉
Original assignee: Yangzhou Aofan Electrical Appliance Co Ltd
Current assignee: Yangzhou Aofan Electrical Appliance Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-02-14
Anticipated expiration: 2029-07-08

Abstract

The utility model relates to the field of control protection switches, in particular to an arm support of a control protection switch, which comprises a rotating arm, a U-shaped groove, a bolt and a conical boss; the upper portion of the rotating arm is provided with the U-shaped groove, the U-shaped groove is connected to the frame through a pin in a rotating mode, a vertical bolt is arranged on one side of the rotating arm, a groove is formed in the lower portion of the bolt, the groove is connected to the frame through an elastic piece, the arm support is connected to the guide rod, and the pressing end of the guide rod is a conical boss. The operation stroke and the final pressure of the arm support and the main contactor are increased, so that a contact bridge (a conical boss) in the main contactor is in full contact with a static contact, and the problems of phase loss and virtual connection are greatly reduced.

Description

Arm support for controlling protection switch

Technical Field

The utility model relates to a control protection switch field, in particular to control protection switch's arm support.

Background

The control and protection switch adopts a modularized single product structure form, integrates the main functions of a traditional circuit breaker (fuse), a contactor, an overload (or overcurrent and open-phase) protection relay, a starter, an isolator and the like, has the functions of remote automatic control and on-site direct manual control, has the functions of panel indication and motor signal alarm, has the functions of overvoltage and undervoltage protection, and also has the functions of open-phase and open-phase protection, coordinated and matched time-current protection and the like. The control and protection switch is no longer a single product such as a contactor, a circuit breaker or a relay in terms of structure and function, but is a set of control and protection system. The device fundamentally solves the problems of unreasonable control and protection coordination caused by unreasonable selection of the traditional discrete components, particularly overcomes the phenomenon of inconsistent protection characteristic and control characteristic when the electrical products adopting different assessment standards are combined together, and greatly improves the operation reliability and continuous operation performance of the control and protection system.

At present, the working principle at the arm support is as follows: the arm support is matched and connected with a guide rod on the main contact device, when the electromagnet breaking device is switched on, the electromagnet is attracted, the electromagnet drives the arm support to move, the arm support overcomes the acting force of the tension spring to move upwards, a bolt on the arm support is upwards, so that the guide rod in the main contactor is switched on, and a main loop is electrified; when the electromagnet is separated, the tension spring pulls the arm support to move downwards, the bolt on the arm support presses the guide rod downwards, and the pressure of the pressure spring is overcome to separate and cut off the power of the main circuit.

As shown in fig. 1, the lower end of the arm support and the contact surface of the main contactor both adopt a planar design, and in the frequent use process, the product is in virtual connection and open-phase due to insufficient contact stroke of the arm support and the main contactor, so that the power utilization safety of the equipment is influenced.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a soil temperature detection device.

The utility model provides a following technical scheme: an arm support for controlling a protection switch comprises a rotating arm, a U-shaped groove, a bolt and a conical boss; the utility model discloses a bolt, including swinging boom, U type groove, arm support, rotatory arm, U type groove, rotatory arm upper portion is provided with U type groove, U type groove passes through pin swivelling joint in the frame, swinging boom one side is equipped with vertically the bolt, the bolt lower part is equipped with the recess, the recess pass through the elastic component connect in the frame, connect in the guide arm on the arm support, the end of pushing down of guide arm does the toper boss.

Further, the width of the conical boss is 3 mm, and the height of the conical boss is 1 mm.

Further, the elastic member is a truncated cone spring.

Furthermore, an electromagnetic driving mechanism is arranged outside the arm support.

The utility model has the advantages that: the width of the conical boss is 3 mm, the height of the conical boss is 1 mm, the operation stroke and the final pressure of the arm support and the main contactor are increased, and a contact bridge (the conical boss) in the main contactor is in full contact with a static contact, so that the problems of phase loss and virtual connection are greatly reduced; the elastic component is a truncated cone spring, and the truncated cone spring has the advantages of good shock absorption, strong anti-resonance capability and the like compared with a common straight-tube spring, can absorb vibration and impact energy, enables the conical boss to have better buffering performance when touching other contacts, and further improves the working reliability of the main contactor.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of an arm support of prior art design;

FIG. 2 is a schematic structural view of the arm support of the present invention;

labeled as: 1. a rotating arm; 2. a U-shaped groove; 3. a bolt; 31. a groove; 4. and a conical boss.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The following describes preferred embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 2, the utility model provides the following technical solutions: an arm support for controlling a protection switch comprises a rotating arm 1, a U-shaped groove 2, a bolt 3 and a conical boss 4; 1 upper portion of swinging boom is provided with U type groove 2, U type groove 2 is through pin swivelling joint in frame, 1 one side of swinging boom is equipped with vertically bolt 3, 3 lower parts of bolt are equipped with recess 31, recess 31 pass through the elastic component connect in the frame, connect in the guide arm on the arm support, the end of pushing down of guide arm does toper boss 4.

In the existing design, the boss is in a circular truncated cone shape, and the boss is directly lengthened due to the limited stroke space of a product, so that the phenomenon of blocking can occur. In this embodiment, the width of the tapered boss 4 is 3 mm, and the height thereof is 1 mm. The operation stroke and the final pressure of the arm support and the main contactor are increased, so that a contact bridge (a conical boss) in the main contactor is in full contact with a static contact, and the problems of phase loss and virtual connection are greatly reduced.

In this embodiment, the elastic member is a truncated cone spring. Compared with a common straight-tube spring, the truncated cone spring has the advantages of good shock absorption, strong anti-resonance capacity and the like, can absorb vibration and impact energy, enables the conical boss to have better buffering performance when touching other contacts, and further improves the working reliability of the main contactor.

In this embodiment, an electromagnetic driving mechanism is disposed outside the arm support. When the electromagnetic mechanism is switched on, the coil generates electromagnetic force to attract the electromagnet iron, the electromagnet drives the arm support to move through the coupling action of the magnetic force, and the arm support pushes the guide rod to move, so that the conical boss 4 is contacted with other contacts to achieve the conductive action. When the electromagnetic mechanism is disconnected, the arm support drives the push rod to restore to the original position under the action of the elastic piece, so that the conical boss 4 is separated from other contacts, and a circuit is disconnected.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An arm support for controlling a protection switch is characterized by comprising a rotating arm, a U-shaped groove, a bolt and a conical boss; the utility model discloses a bolt, including swinging boom, U type groove, arm support, rotatory arm, U type groove, rotatory arm upper portion is provided with U type groove, U type groove passes through pin swivelling joint in the frame, swinging boom one side is equipped with vertically the bolt, the bolt lower part is equipped with the recess, the recess pass through the elastic component connect in the frame, connect in the guide arm on the arm support, the end of pushing down of guide arm does the toper boss.

2. The arm support for a control protection switch according to claim 1, wherein said tapered boss has a width of 3 mm and a height of 1 mm.

3. The arm support for a control protection switch according to claim 1, wherein said elastic member is a truncated cone spring.

4. An arm support for a control protection switch according to claim 1, wherein an electromagnetic driving mechanism is provided outside the arm support.