CN2132303Y - Seesaw type free selecting plug - Google Patents

Abstract

The utility model relates to a plug for an electric appliance, which is composed of a safety guard bottom plate and a seesaw type digroup plug. Both sides of the safety guard are provided with holes for digroup plugs. The utility model is characterized in that no refit of the mode of connection is needed at all because of the change of phase sequence of an external power supply, and the needed phase sequence of source of power can be selected safely and freely forever, which increases application flexibility of an electric appliance, raises work efficiency, and decreases accidents caused by electricity.

Description

Seesaw type free selecting plug

The invention relates to the utility model of attaching plug, its objective is that change existing power supply plug is powerless fully with respect to the mode of connection of socket, stiff state that can only passive adaptation makes new type of plug can adapt to the different phase sequences or the mode of connection of power supply initiative and flexiblely.

We know, what general electric tool used is three-phase 380V power supply, plugs and sockets has only a kind of form of three-phase and four-line, but this a kind of form is because back panel wiring mode difference, can make motor produce two kinds of differences of " falling " " suitable " turns to, connect the plugs and sockets of electric wire, relied on the structural behaviour of self to be not easy to change neatly promptly fixed turning to.More than this performance, truly have inconvenience in actual use.

Such as before a threephase motor moved on to new supply socket, plug inserted very convenient, and it is not right in a single day to find to turn to, and just needed to remove plug and reequiped electric wire again, and this can be just inconvenient.In actual life, we find that some need often to move the electrical equipment that use and do not have plug, and the user is not earnest unexpectedly to be removed to adorn plug but directly the end of a thread is filled in the socket aperture.The existence of this phenomenon, rules and regulations are not tight, and it no doubt is a key factor that the electrician lacks a sense of responsibility, but also has reason fully to think, it also is another key factor really that the common power plug uses inconvenience.

At present, numerous electricians and Electrical Appliances Designing person have had been noted that this problem, but the settling mode of taking is to have got around plug and work hard on socket, the mode of being taked has only a bit after all, be exactly two sockets of pacifying two phase sequence opposed complementary or the different complementation of the mode of connection side by side, use for you to choose.This a kind of effective and efficient manner of can yet be regarded as really, but weak point is also arranged at first is to roll up supply socket to take a lot of work expensively, is not easy to popularize in an all-round way, and next the more important thing is that electrical equipment itself is in passive dependence status all the time, does not just flexiblely forever get up.

Purpose of the present invention, to design a kind of new type of plug that can initiatively adapt to external power receptacle exactly, change from passive to active, under the prerequisite of not changing socket and the plug phase sequence or the mode of connection fully, rely on the characteristic of new type of plug, freely adapt to the mode of connection of external receptacle, select needed motor to turn on one's own initiative.

Embodiment of the present invention are that example is described below with the three-phase and four-line power plug:

Be safety guard shown in the accompanying drawing 1.(1) be base plate, it resembles the socket panel that two afterbodys connect together, and it respectively has one group up and down and is elliptoid preformed hole, and (2) are the protection frames, and (3) are the axis on the frame.

Shown in the accompanying drawing 2, be the two group of seesaw type plug, it respectively has one group of ordinary plug up and down, and each group plug is all corresponding with the preformed hole on the protective plate.(4) be and (3) supporting central axis hole, (5) are the connecting lines of two groups of plugs up and down, and (6) are terminal screws, and (7) are the external cable lines.A, B, C, O represent three not isopen and neutral lines respectively among the figure.

See that from the side the two group of seesaw type plug has been lifted up the shape as Fig. 3 with the central axis hole for the both sides, center.

From figure, we can analyze and draw following 2 points, no matter which kind of outside three phase line A, B, C insert in proper order with, the phase sequence of two groups of plugs is all inevitable opposite up and down; Two, two groups of plugs are the seesaw shape have determined to stretch out that the protection base plate is connected with socket may be one group of plug under any situations, and another group must be retracted within the protection range that protects frame.

From above accompanying drawing and analyzing, we can know clearly the operating characteristic of this new type of plug very much.At first, the three-phase electric apparatus of any use ordinary plug all is suitable for using instead this plug; Secondly, use new type of plug safety and nimble especially, in case find the opposite of motor steering and hope, new type of plug is changed individual direction insertion, problem has just satisfactorily resolved immediately.

The above is that three-phase and four-line is freely selected plug, and individual event freely selects the principle of plug and mode identical therewith, there is no need to describe in detail, and being the single-phase scope of application of plug of freely selecting can not be too careless.Specifically be exactly: the electrical equipment of the single-phase two-pin plug of all former uses all suits to use new type of plug instead, because allow this electrical equipment use single-phase three-wire socket just increase the flexibility of using and not had any side effect; In every case be the electrical equipment that the safety utilization of electric power standard clearly stipulates to have reliable ground, must continue to use common single-phase three-wire plug, as allow this electrical equipment use new type of plug instead that equaling provides convenience to transgression for using electricity, this obviously is improper.

In sum, free selection type plug can provide a kind of electric mode that promptly connects safely and easily for the user (the particularly user of three-phase movable electric tool) of electrical equipment, and it helps improving working efficiency, reduces the generation with electrification.

Claims (1)

1. A kind of attaching plug, its notable feature be, it is made up of security protection base plate and the two group of seesaw type plugs, and security protection base plate both sides have with two organizes the corresponding hole of plugs, the different complementation of wiring phase sequence (or mode of connection) of two groups of plugs.