CN213277833U

CN213277833U - Rolling contact for electrical engineering

Info

Publication number: CN213277833U
Application number: CN202022245724.6U
Authority: CN
Inventors: 刘珠凤
Original assignee: Suzhou Lisote Automation Equipment Co ltd
Current assignee: Suzhou Lisote Automation Equipment Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-05-25
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a rolling contact for electrical engineering, its structure includes the terminal, its characterized in that the terminal is connected with fixed establishment, fixed establishment passes through the spring and accepts the box and is connected, it is connected with bearing bracket to accept the box, it passes through branch and links to each other with arc control device to accept the box side, the electrically conductive axle is being fixed at the bearing bracket both ends, the cylinder is being established to electrically conductive axle overcoat. This device increases the pressure of contact and contact surface through the spring, makes the motion each other laminate more, and the circular telegram back, and the adsorption plate can adsorb the clearance to the metal fillings and other magazines on contact surface.

Description

Rolling contact for electrical engineering

Technical Field

The utility model belongs to the technical field of electrical contact, concretely relates to rolling contact for electrical engineering.

Background

The electrical contact is a main line conductive contact material widely applied to relays, contactors, load switches, medium and low voltage circuit breakers, and switching appliances such as household appliances and automobile appliances. Switching devices are widely used for voltage/current in open/close circuits, reliability of which directly affects reliable operation of the whole power system, and electrical contacts are one of important parts of the switching devices. The contact products are the "heart" parts of these products. According to the structure and working characteristics, the contact can be divided into three types, namely a breakable contact, a sliding contact and a fixed contact. However, since the moving contact is moving, the rolling friction resistance is small, the self-cleaning function of the contact is poor, and the conductive effect is affected by the condition of the contact surface.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above-mentioned problem, a rolling contact for electrical engineering increases the pressure of contact and contact surface through the spring, makes contact and contact rail motion each other laminate more, and the circular telegram back, and the adsorption plate can adsorb the clearance to the metal fillings and other magazines on contact surface.

The utility model discloses a realize through following mode: the wiring terminal is connected with a fixing mechanism, the fixing mechanism is connected with a bearing box through a spring, the bearing box is connected with a bearing support, the side edge of the bearing box is connected with an arc extinguishing device through a supporting rod, conductive shafts are fixed at two ends of the bearing support, and rollers are sleeved on the conductive shafts.

Preferably, the fixing mechanism is provided with buckles on two sides, the fixing structure is provided with a limit baffle plate far away from the terminal end, and the surface of the terminal is wrapped with a protective sleeve.

Preferably, a threaded metal seat is arranged in the bearing box, the spring is connected with the wiring terminal, the spring and the threaded metal seat are detachably mounted, and a part of the threaded metal seat extends into a wiring hole in the side face of the bearing box.

Preferably, the bearing support is provided with a suction plate near the surface of the rolling contact, and the suction plate is not in contact with the roller.

Preferably, the conductive shaft is provided with a bearing, the roller is assembled on the bearing, two ends of the conductive shaft are provided with positioning springs, and the positioning springs position the bearing in the middle of the conductive shaft.

Preferably, the arc control device is in a curved surface shape and surrounds the side surface of the rolling contact, and a plurality of arc extinguishing chambers are distributed on the arc control device.

The utility model discloses the advantage that embodies does: the fixing structure is provided with a buckle for repeated installation, can be adjusted and replaced at any time by matching with the limiting baffle, and can adjust the extending length of the spring by rotating the spring and the threaded metal seat, so that the spring can adapt to the space between the spring and the contact rail and can also strengthen the pressure of the contact surface. The adsorption plate activated by electromagnetic induction can automatically clean the contact roller. When rolling, the positioning spring fixes the motion track of the roller, and even if the contact track deviation generates electric arcs, the arc extinguishing device can absorb the electric arcs.

Drawings

Fig. 1 is a schematic structural view of a rolling contact for electrical engineering according to the present invention.

Fig. 2 is a schematic structural view of a rolling contact fixing mechanism for electrical engineering according to the present invention.

Fig. 3 is a schematic view of the internal structure of the rolling contact receiving box for electrical engineering.

In the figure, a terminal 1, a fixing mechanism 2, a buckle 21, a limit baffle 22, a protective sleeve 23, a spring 3, a receiving box 4, a threaded metal seat 41, a wiring hole 42, a bearing bracket 5, an adsorption plate 51, an arc extinguishing device 6, a support rod 61, an arc extinguishing chamber 62, a conductive shaft 7, a bearing 71, a positioning spring 72 and a roller 8.

Detailed Description

As shown in fig. 1-3, in the rolling contact for electrical engineering, the terminal 1 is connected to a fixing mechanism 2, the fixing mechanism 2 is connected to a receiving box 4 through a spring 3, the receiving box 4 is connected to a bearing bracket 5, the side edge of the receiving box 4 is connected to an arc extinguishing device 6 through a support rod 61, conductive shafts 7 are fixed to two ends of the bearing bracket 5, and rollers 8 are sleeved on the conductive shafts 7.

In this embodiment, 2 both sides buckles 21 of fixed establishment and limit baffle 22 cooperation realize with block terminal demountable installation, and 1 surface coating of terminal has protective sheath 23, reduces the contact of electrified part and air.

In this embodiment, a threaded metal seat 41 is arranged in the receiving box, the spring 3 is connected with the wiring terminal 1, the spring 3 and the threaded metal seat 41 are detachably mounted, and the contact rail keep a certain pressure by adjusting the mounting length of the spring 3, so that the conductive efficiency is stabilized. The threaded metal base 41 has a portion extending into a wiring hole 42 in the side of the receiving box 4 for facilitating connection with the conductive shaft 7.

In this embodiment, install bearing 71 on the conducting shaft 7, the cylinder 8 assembles on bearing 71, conducting shaft 7 both ends are equipped with positioning spring 72, positioning spring 72 is located conducting shaft 7 middle part with bearing 71, consolidates electrically conductive stability, this face of bearing bracket 5 near rolling contact 8 has set up adsorption plate 51, and adsorption plate 51 is iron plate or other soft magnet material.

In this embodiment, the arc extinguishing device 6 is curved around the side of the roller 8, and a plurality of arc extinguishing chambers 62 are distributed on the arc extinguishing device 6 to protect the contacts in case of accident.

To the clean problem of contact, the utility model discloses let the electric current pass through spring 2, spring 2's helical structure produces induction magnetic field, and magnetic field magnetizes adsorption plate 51 simultaneously, and the metal fillings on the contact cylinder 8 just are siphoned away by adsorption plate 51 like this, keep 8 surface cleaning of cylinder, make the contact surface laminate more. The spring 3 exerts pressure on the contact, so that the mutual friction between the contact and the contact rail can also play a self-cleaning effect. If there are impurities on the surface of the drum 8 that cannot be adsorbed, the contact may be insufficient to generate an arc, and at this time, the arc extinguishing device 6 attracts the arc elongated by the magnetic force into each narrow arc extinguishing chamber 62 in the arc extinguishing device 6, and the arc extinguishing chamber 62 divides the arc into several segments and contacts with the solid medium, so that the arc is extinguished, thereby protecting the contact surface from the arc erosion.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although wiring terminals, fixing mechanisms, fasteners, limit stops, protective sleeves, springs, bearing boxes, threaded metal seats, wiring holes, bearing supports, adsorption plates, arc extinguishing devices, support rods, arc extinguishing chambers, conductive shafts, bearings, positioning springs, rolling contacts are used to a great extent herein. Etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a rolling contact for electrical engineering, includes terminal (1), its characterized in that terminal (1) is connected with fixed establishment (2), fixed establishment (2) are connected with receiving box (4) through spring (3), receiving box (4) are connected with bearing bracket (5), receiving box (4) side is passed through branch (61) and is linked to each other with arc extinguishing device (6), bearing bracket (5) both ends are being fixed conductive shaft (7), cylinder (8) are being established to conductive shaft (7) overcoat.

2. The rolling contact for electrical engineering according to claim 1, wherein: fixing mechanism (2) both sides are provided with buckle (21), fixing mechanism (2) are kept away from terminal (1) end and are equipped with limit baffle (22), terminal (1) surface coating has protective sheath (23).

3. The rolling contact for electrical engineering according to claim 1, wherein: the socket is characterized in that a threaded metal seat (41) is arranged in the socket box, the spring (3) is connected with the wiring terminal (1), the spring (3) and the threaded metal seat (41) are detachably mounted, and one part of the threaded metal seat (41) extends into a wiring hole (42) in the side face of the socket box (4).

4. The rolling contact for electrical engineering according to claim 1, wherein: the bearing support (5) is provided with an adsorption plate (51) close to the surface of the roller (8), and the adsorption plate (51) is not in contact with the roller (8).

5. The rolling contact for electrical engineering according to claim 1, wherein: the roller type electric conduction shaft is characterized in that a bearing (71) is mounted on the electric conduction shaft (7), the roller (8) is assembled on the bearing (71), positioning springs (72) are arranged at two ends of the electric conduction shaft (7), and the bearing (71) is positioned in the middle of the electric conduction shaft (7) by the positioning springs (72).

6. The rolling contact for electrical engineering according to claim 1, wherein: the arc extinguishing device (6) is in a curved surface shape and surrounds the side surface of the roller (8), and a plurality of arc extinguishing chambers (62) are distributed on the arc extinguishing device (6).