CN2293115Y

CN2293115Y - Isolator with locking device

Info

Publication number: CN2293115Y
Application number: CN 97207504
Authority: CN
Inventors: 倪荣升
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-21
Filing date: 1997-01-21
Publication date: 1998-09-30
Anticipated expiration: 2007-01-21

Abstract

The utility model belongs to an isolator for among distribution and the electrical equipment, including bottom plate, fixed contact, movable contact sword, apron, handle, travel switch and lock tongue formula moving contact to and control lock tongue formula moving contact action slider and the shift fork of taking the control handle. The isolator can carry out opening and closing, cutting off and connecting circuits step by step and can be locked after closing. Therefore, the misoperation of opening and closing with load can not occur under any condition, and the device has the advantages of safety, reliability and the like. Thereby overcoming the possible disadvantage of the prior art that the safety of equipment and the like is endangered due to the on-load brake opening.

Description

The isolator of deciding device with lock

The utility model belongs to a kind of distribution and control panel of being used for, and divides for having under voltage, the immunization with gD DNA vaccine, closes circuit, the isolator of insulating power supply, particularly a kind of isolator that prevents safety guards such as misoperation that has.

In the patent No. is in the patent documentation of ZL92214966.6; disclosed " a kind of isolator " with protective device; comprise base plate; decide contact, movable touch knife, handle, insulation cover plate and retaining mechanism, travel switch and being located on the cover plate to control the contact of deciding of travel switch action with the cover plate opening and closing.Though having under normal circumstances to use, this isolator can effectively avoid the harm that equipment and personal safety brought because of misoperation.But because the contact of deciding of control travel switch action is arranged on the cover plate that is fixed together with handle, the disconnection of circuit is all carried out with the action of folding lock continuously with connecting, and the speed that moves during by the opening and closing lock blanking time therebetween reaches the contacting travel of deciding between contact and the movable touch knife and determines.Therefore, under special circumstances, such as deciding contact and the movable touch knife contacting travel is too short, also or because of travel switch quality or service time are long etc. cause the travel switch delay of response, adding the action of operating a switch and causing outage that the disadvantage that charged (on-load) opens a sluice gate takes place with opening a sluice gate too short at interval when too urgent, too quickly.

The purpose of this utility model is a kind of cut-out of design, connect circuit separates with the opening and closing lock and carries out, and to overcome the above-mentioned defective that background technology exists, reaches purposes such as the reliability of this type of isolator of raising and fail safe.

Solution of the present utility model be with open a sluice gate, close a floodgate and cut off and connect circuit be divided into two the step carry out.Travel switch still is located at its moving contact employing dead bolt moving contact on the base plate, is parallel to the cover plate setting and is fixed in the cover plate inboard versatilely, and by its action of fork controls, this moving contact plays locking action simultaneously behind combined floodgate; Shift fork then is fixed on the movable contact headstock versatilely, and control it and swing and locate by being located at slide block on handle set or the cover plate and finger thereof, and then action of control moving contact and location; Then realize by the energy storage retainer spring that is connected between slide block and the cover plate location after slide block puts in place.Therefore, the utility model comprises base plate and is fixed in decides contact, travel switch on the base plate, cover plate and be fixed in the handle in the cover plate outside and be fixed in inboard movable touch knife and travel switch moving contact; Key is also to be provided with a shift fork in the cover plate inboard, also is provided with the slide block of being with finger and control handle at handle set or cover plate top; The travel switch moving contact, adopt the dead bolt moving contact, being parallel to cover plate, to be arranged at cover plate versatilely inboard and be connected with the shift fork lower end by finger, the then logical finger in the upper end of shift fork is connected with slide block, and it is interior and link into an integrated entity versatilely by energy storage retainer spring and cover plate that slide block then is located at chute on handle set or the cover plate; Travel switch then is fixed on the base plate by the holder of band lock-tongue port.The slide block of above-mentioned band control handle, the control handle on it both can have been established one, also can establish two; When establishing one, its control handle is located at the slide block middle part, then is divided into the slide block two ends when establishing two.

The utility model is owing to carry out opening and closing lock and cut-out, connection circuit step by step, thereby can guarantee that the misoperation of on-load opening and closing lock under any circumstance all can not appear in operating personnel; And adopt slide block mechanism to drive the action of fork controls travel switch moving contact, with connect circuit, locking is closed a floodgate or cut off circuit, cancel locking has the reliability advantages of higher.The drawback that the on-load that can effectively avoid may occurring the background technology from face is opened a sluice gate.

Accompanying drawing and description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model user mode schematic diagram ("on" position).

Among the figure: 1, base plate, 2, travel switch, 3, the travel switch holder, 4, decide contact, 5, cover plate, 6, movable touch knife, 7, energy storage retainer spring, 8, slide block, 9, handle, 10, the dead bolt moving contact, 11, moving contact holder, 12, shift fork, 13,14: finger, 15,16: the slide block control handle.

Embodiment

Present embodiment is an example with 200A hilted broadsword isolator: wherein base plate 1, and travel switch 2 is decided contact 4, and the overall dimension of movable touch knife 6 and cover plate 5 is all same with background technology.Present embodiment is offered a penetration type chute in order to slide block 8 to be installed in the handle set inboard, this slide block adopts the compression moulding of DMC unsaturated polyester resin, long 120mm, the wide 19mm of body, high 14mm, a

control handle

15,16 is respectively established at the slide block two ends, high each 15mm of handle, wide 9mm, thick 4mm; Energy storage retainer spring 7, the left and right dish of respectively establishing adopts the spring steel wire coiling of  0.8, dextrorotation, spring external diameter  8mm, both ends of the spring is stuck in respectively in the fixing hole of slide block and cover plate during installation.Dead bolt moving contact 10 adopts punching of the steel plate to form, wide 20mm, and thick 3mm, long 55mm, with 90 ° of limits of folding, travel switch auxiliary section, the high 10mm in limit, tongue body middle part riveting one finger 14, diameter  6mm, high 10mm; Moving contact holder 11, wide 30mm, long 75mm, the laterally long 16mm of chute that supplies finger 14 to move that offers on it, wide 6mm; Shift fork 12 adopts thick 2mm punching of the steel plate, long 62mm, and wide 20mm, upper end slot opening 8mm, lower end slot opening 6mm is 5mm deeply; Travel switch holder 3, its end face is higher than the travel switch contact, makes it form a lock-tongue port, to have cooperated locking action with the dead bolt moving contact.

During use: the back (as shown in Figure 2) of closing a floodgate is shifted slide block control handle 15 (16) onto position left, the moving shift fork action of shipper pole left of slide block this moment will be decided contact with 10 groups of dead bolts to travel switch and be pressed onto the position, energized is locked by travel switch holder mouth simultaneously; During separating brake, earlier slide block control handle 16 (15) is pushed the position to the right, shift fork drive this moment finger 14 dials dead bolt from travel switch, will lock could be drawn back (the shift fork position is separating brake and the preceding view of closing a floodgate among Fig. 1) behind the dump.

Claims

1, a kind of isolator of deciding device with lock comprises base plate and is fixed in and decides contact, travel switch on the base plate, cover plate and be fixed in the handle in the cover plate outside and be fixed in inboard movable touch knife, travel switch moving contact; It is characterized in that also being provided with a shift fork in the cover plate inboard; Also be provided with the slide block of being with finger and control handle at handle set or cover plate top; The travel switch moving contact is the dead bolt moving contact, and being parallel to cover plate, to be located at cover plate versatilely inboard and be connected with the shift fork lower end by finger, and the upper end of shift fork then is connected with slide block by finger; Slide block then is located in the chute on handle set or the cover plate and by energy storage retainer spring and cover plate and is linked into an integrated entity versatilely; Travel switch then is fixed on the base plate by the holder of band lock-tongue port.

2, by the described isolator of deciding device with lock of claim 1, it is characterized in that the control handle on the slide block both can have been established one, also can establish two; When establishing one, its control handle is located at the slide block middle part, then is divided into the slide block two ends when establishing two.