CN2504754Y

CN2504754Y - Plastic shell type residual current protector

Info

Publication number: CN2504754Y
Application number: CN 01263338
Authority: CN
Inventors: 王卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-18
Filing date: 2001-10-18
Publication date: 2002-08-07
Anticipated expiration: 2011-10-18

Abstract

The utility model discloses a molded case surplus current protector having the functions of electric closing brake, electric separating brake and manual opening. The electric closing brake is realized by a micro motor driving a gear reducer to transmit torque to a closing mechanical structure by a connecting rod, the electric separating brake is realized by a screw electric magnet impinging the disconnect lever of a mechanical release, and the manual opening is realized by a press button with a pyramidal column pushing a slid block to touch the disconnect lever of the mechanical release. The utility model increases the security of the electric power of the molded case surplus current protector and is convenient to control automatically.

Description

A kind of plastic shell residual current operated protective device

The utility model relates to a kind of novel plastic shell type that can electric switch-on, and (be called for short: plastic shell is once called as: the device formula) residual current operated protective device.It is applicable to 220V single phase alternating current (A.C.), 380V three-phase or three-phase and four-line, and rated operational current is to make circuit breaker in the industrial frequency AC circuit of 150-200A, 250-400A to use.

Current, the plastic shell residual current operated protective device on the market is all pulled handle with hand and is realized closing a floodgate and separating brake, can not automatic reclosing.

The purpose of this invention is to provide a kind of new residual current operated protective device; in use no longer need use bigger power to remove to pull handle with hand closes a floodgate; and by being installed in the electronic control circuit of moulding in the shell loam cake; to driving the electronic orderly power supply of closing a floodgate; realize electric switch-on, electronic separating brake and automatic reclosing function; replaced personnel selection and pulled the switch lever combined floodgate, the plastic shell residual current operated protective device can have been entered make master control electrical equipment usefulness in the automatic control circuit.

The utility model is realized with following technical scheme: this plastic shell residual current operated protective device closes at former residual current operated protective device; connect a cover electric switch-on mechanism and a cover manual brake separating mechanism on the swing arm of on/off operation mechanism; electric switch-on mechanism is contained in the operating mechanism metal frame or moulds (looking the rated operational current size determines) on the shell base; electric switch-on mechanism is by miniature cocurrent electromotor (hereinafter to be referred as motor); the connection gear decelerator; one eccentric shaft is arranged on the reducer final stage gear; connecting rod one end is connected with eccentric shaft, the other end of connecting rod and residual current operated protective device; the movement arm of operating mechanism is done hinge joint and is connected.On connecting panel during switch; being installed in residual current operated protective device moulds the electronic circuit control box of shell loam cake inboard (hereinafter to be referred as the GLB-mainboard) and send to motor; motor gets electric rotation; combined floodgate moment of torsion of reducer final stage gear drive bar output and torsion are given the swing arm of switch-on operating mechanism; the swing arm of operating mechanism moves upward; realized the electric switch-on of switch, pulled the handle combined floodgate thereby replaced manpower.Behind combined floodgate; moving contact rack rotates because of closing a floodgate and has touched sensitive switch; at this moment; malfunctioning and the motor continuous running that causes of sensitive switch; automatic brake separating, the power-on time that the GLB-mainboard is set to motor when a certain amount of residual current takes place protected circuit has increased 1-2 second than normal the combined floodgate, then promptly stops to power to motor; prevented also that because of voltage is too low motor torsion is little can not to close a floodgate and make the normal phase operating state of motor and damage motor.

The electronic separating brake of manual operation: cleaved facet on-board switching, the GLB-mainboard screw electromagnet in residual current operated protective device provides power supply, and the release lever that the electromagnet bump is threaded off has been realized electronic separating brake.

Automatic brake separating: when a certain amount of residual current took place protected circuit, the screw electromagnet of GLB-mainboard in residual current operated protective device provided power supply, and the release lever that the electromagnet bump is threaded off has been realized electronic separating brake.

During manual brake separating, press the manual brake separating button of moulding on the shell panel, the conoid pole of opening button lower end will be passed and the release lever of shake-up release by the separating brake slide block of moulding the shell base support, realize separating brake manually.

Automatic reclosing: when needing automatic reclosing, the GLB-mainboard was delayed time behind the fault separating brake 20～60 seconds, provided power supply to motor, and motor rotation is pushed into closing position by decelerator, connecting rod with the swing arm of switch operating mechanism, has realized automatic reclosing.

Vertical view when Fig. 1 moulds the shell loam cake for the utility model removes;

Fig. 2 is the three-view diagram of the utility model electric switch-on mechanism;

Fig. 3 is the electronic separating brake end view of the utility model;

Fig. 4 is the vertical view and the left view of the utility model manual brake separating mechanism.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1, the utility model shown in Figure 2 it by motor (1), gear reduction unit (2), eccentric shaft (3), connecting rod (4), combined floodgate is made mechanism's swing arm (5), switch movable contact support (6), screw electromagnet (7), sensitive switch (8), switch machinery release release lever (9), manual brake separating button (10), separating brake slide block (11), compositions such as (12) GLB-mainboard.

1, electronicly close, separating brake: motor is the 5-10W dc micro-motor, the gear reduction unit speed ratio is 750: 1～540: 1, gear reduction unit final stage addendum circle diameter of gear is 33 millimeters of Φ 25～Φ, eccentric shaft (3) is installed on the lateral surface of reducer final stage gear, the installation site apart from this gear distance of center circle on the circumference that is 30 millimeters of Φ 20～Φ.Its course of work is achieved in that when starting residual current operated protective device electric switch-on button; the GLB-mainboard send to motor (1); motor (1) rotation driven wheel decelerator (2); the moment of torsion of gear reduction unit final stage gear eccentric shaft (3) output transmits a combined floodgate moment of torsion by connecting rod (4) hinge joint to the swing arm (5) of operating mechanism; realized electric switch-on; close a floodgate simultaneously; switch movable contact frame (6) has rotated sensitive switch (8) because of combined floodgate; the motor dead electricity; motor (1) stops the rotation, and the electric switch-on process finishes.Press electronic opening button during electronic separating brake, the GLB-mainboard send electricity to screw electromagnet (7), electromagnet (7) electronic work touches mechanical release release lever (9) and has realized separating brake.

2, it be contained in and mould the opening button (10) that covers on the shell of manual brake separating: Fig. 1 manual brake separating mechanism shown in Figure 4, form by the separating brake slide block (11) of moulding the shell base support, switch machinery dropout release lever (9) etc., its course of work is such: when needing separating brake, pressing opening button (10) is a conoid pole because of the opening button lower end, when conoid pole moves downward, promptly promote separating brake slide block (11) and done horizontal displacement, its shift length just in time touches the release lever (9) that machinery is threaded off, and has realized manual brake separating.

3, automatic closing: when needs overlapped automatically, the GLB-mainboard provided switching current to motor after delaying time behind the fault separating brake 20～60 seconds, realized automatic reclosing.

Claims

1, one plastic shell residual current operated protective device, it is characterized in that closing at existing plastic shell residual current operated protective device, be connected with electronic the closing of a cover on the metal frame of the swing arm of on/off operation mechanism (5), brake separating mechanism, mould shell loam cake inboard one a cover GLB-mainboard and a cover manual switching-off device are housed, electric switch-on mechanism is by miniature cocurrent electromotor (1) connection gear decelerator (2), one eccentric shaft (3) is housed on gear reduction unit final stage gear, connecting rod (4) one ends are connected with eccentric shaft, the other end is done hinge joint with the swing arm (5) of switch-on operating mechanism and is connected, electronic closing, brake separating mechanism is powered to motor (1) by the GLB-mainboard, realize automatic closing for switch-on operating mechanism swing arm (5) through gear reduction unit (2) and combined floodgate moment of torsion of connecting rod (4) output, the back switch movable contact support (6) that closes a floodgate rotates because of closing a floodgate and touches sensitive switch (8), cut off motor (1) power supply, the GLB-mainboard is set to the motor supplying time increases 1-2 second than normal the combined floodgate; When the need automatic reclosing, the GLB-mainboard is delayed time after fault and 20-60 second is realized automatic reclosing to the motor power supply.

2, residual current operated protective device according to claim 1; it is characterized in that: the motor of electric switch-on mechanism (1) is the 5-10W dc micro-motor; gear reduction unit (2) speed ratio is 750: 1～540: 1; gear reduction unit (2) final stage addendum circle diameter of gear is 33 millimeters of Φ 25～Φ; eccentric shaft (3) is installed on the lateral surface of decelerator (2) final stage gear, the installation site apart from this gear distance of center circle on the circumference that is 30 millimeters of Φ 20～Φ.

3, residual current operated protective device according to claim 1 is characterized in that: electronic separating brake is to send electricity by the GLB-mainboard to screw electromagnet (7), electromagnet (7) the electronic work release lever (9) that touches mechanical release is realized electronic separating brake.

4, residual current operated protective device according to claim 1; it is characterized in that: the lower end of manual brake separating button (10) is a conoid pole; promote separating brake slide block (11) when conoid pole moves downward and do horizontal displacement, it moves the just in time release lever (9) of touch switch machinery release of distance.

5, residual current operated protective device according to claim 1 is characterized in that: electronic on/off switch operating mechanism also can be contained in and mould on the shell base.