Breaker of plastic casing
Technical field
The utility model relates to a kind of circuit breaker, especially a kind of breaker of plastic casing.
Background technology
Breaker of plastic casing is as a kind of general electronic corporation, because its compact conformation, price are low and stable and reliable for performance being used widely.If breaker of plastic casing runs into some special situations in use, in the time that can not carrying out work normally, motor-operating mechanism just need to carry out manual operation, and existing breaker of plastic casing conventionally self without hand-operated tools, cannot carry out rapidly on/off switch operation, operating efficiency and fail safe can not get ensureing like this.
Existing breaker of plastic casing, includes base and upper cover, is provided with connecting terminal components, contact system, operating mechanism and common tripping mechanism in described base; Have be also provided with divide-shut brake mechanism for monitoring and for remote-operated electromagnetism shunted exciter tripping mechanism.In general, user's difference, to circuit breaker internal structure require differently, in order to reduce costs and to increase the convenience of selection, modular breaker of plastic casing becomes present a kind of development trend.But, existing Modularized molded-case circuit breaker, the installation of its function element and dismounting all need first to pull down upper cover, then divide-shut brake mechanism for monitoring or electromagnetism shunt opening element could be installed into, its operation is not only comparatively loaded down with trivial details, also easily in unloading process, damages inner member.
Utility model content
For solving the deficiencies in the prior art, it is a kind of without dismounting case that the utility model provides, i.e. the breaker of plastic casing of installation or removal divide-shut brake monitoring device and electromagnetic shunt excitation tripping device optionally.
For achieving the above object, breaker of plastic casing of the present utility model, comprise and can carry the base of divide-shut brake monitoring device and electromagnetic shunt excitation tripping device and be arranged on the case on base, described base top surface is provided with the operating grip for operating breaker of plastic casing, described case end face is provided with the installing port that can make divide-shut brake monitoring device and electromagnetic shunt excitation tripping device pass through, and it is characterized in that: on installing port, be provided with the cover plate for this installing port of capping.Adopt technique scheme, can remove case, only need open the cover plate of capping installing port, just divide-shut brake monitoring device and electromagnetic shunt excitation tripping device can be arranged on base.
As the restriction to aforesaid way, on described case, a side has draw-in groove, is provided with the key for manual divide-shut brake in described draw-in groove.The setting of draw-in groove and key, has improved the efficiency of carrying out manual opening-closing, does not need other instruments to operate, thereby has increased the fail safe of operation.
As the restriction to aforesaid way, described base top surface is provided with when pulling operating grip, and for the movement slots of operating grip motion, described installing port is positioned at the one or both sides of movement slots.
As the improvement to aforesaid way, when described cover plate one end and case are connected, the other end and case are rotationally connected.This set makes in the time that needs are opened cover plate, only the one end being connected need be opened, and does not need cover plate all to unload, and has avoided the loss of cover plate.
The so-called improvement to aforesaid way, the described notch that is provided with on the key, described case is provided with the breach corresponding with notch.This set is conducive to take out more easily key, raises the efficiency.
Adopt technique scheme, when cover plate can one end be connected with case with hinge, the other end is with screw or be fixed on case, in use, only need open fixing one end, needn't unload lower cover, expose installing port and get final product installation or removal divide-shut brake monitoring device and electromagnetic shunt excitation tripping device, facilitate and can not make cover plate lose; The setting of the breach corresponding with notch on key and draw-in groove and case makes manually to carry out the operation of on/off switch safe and efficiently.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is done further to describe in detail:
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model;
Fig. 3 is right TV structure schematic diagram of the present utility model;
Fig. 4 is the structural representation of key.
In figure:
1, base; 2, case; 21, draw-in groove; 22, breach; 23, movement slots; 24, installing port; 3, key; 31, notch; 4, operating grip; 5, cover plate; 51, screw connects; 52, gemel connection.
Embodiment
As shown in Figure 1 with Figure 2, the breaker of plastic casing that the present embodiment relates to, comprises and can carry the base 1 of not shown divide-shut brake monitoring device and electromagnetic shunt excitation tripping device and be arranged on the case 2 on base 1.Base 1 end face is provided with operating grip 4, is also provided with when pulling operating grip 4 movement slots 23 of moving for operating grip 4.If Fig. 2 is in conjunction with as shown in Fig. 3, on case 2, a side is provided with the draw-in groove that is strip 21 of certain width, is provided with the key 3 for manual divide-shut brake, as shown in Figure 4 in draw-in groove 21, key 3 is provided with the notch 31 of strip, and case 2 is provided with the be circular-arc breach 22 corresponding with notch 31; As shown in Figure 2, case 2 end faces are provided with installing port 24, divide-shut brake monitoring device and electromagnetic shunt excitation tripping device are installed on base 1 by this installing port 24, installing port 24 is positioned at the one or both sides of movement slots 23, in the time that installing port 24 is positioned at movement slots 23 both sides, divide-shut brake monitoring device and electromagnetic shunt excitation tripping device are arranged on respectively movement slots 23 both sides by installing port 24; On installing port 24, be provided with cover plate 5, cover plate 5 is for capping installing port 24, when one end of cover plate 5 and case 2 are connected, the other end and case 2 are rotationally connected, as shown in Figure 2, the mode of being connected can be that screw connects 51 or directly cover plate 5 is connected on case 2, and being rotationally connected can be cover plate 5 to be connected with hinge to 52 be fixed on case 2.
As shown in Figure 2, in the time that divide-shut brake monitoring device and electromagnetic shunt excitation tripping device are installed, the cover plate 5 being sealed on installing port 24 is opened, be connected one end of 51 opens by cover plate 5 with case 2 screws, cover plate 5 other ends and case 2 are still by gemel connection 52, again divide-shut brake monitoring device and electromagnetic shunt excitation tripping device are arranged on respectively to the both sides of movement slots 23 on case 2 end faces, finally cover plate 5 are connected 51 fixingly with case 2 use screws, install.In the time that breaker of plastic casing goes wrong, open one end of the connection 51 of only cover plate 5 need being tightened up a screw, without whole cover plate 5 is pulled down, and can be by divide-shut brake monitoring device and electromagnetic shunt excitation tripping device dismounting.
When breaker of plastic casing runs into some special situations in use, need to carry out manual opening-closing operation time, only key 3 need be taken out from draw-in groove 21, breach 22 on case 2 and the notch of key 3 31 coordinate can make key 3 take out more easily, improve efficiency, increased the fail safe of operation simultaneously.
Based on as above describing, those skilled in the art can carry out adaptive distortion or change based on design philosophy of the present utility model, as connected mode, geomery etc., all belong to protection range of the present utility model.