CN2371685Y

CN2371685Y - Anti-pull-off plug for electrical appliance

Info

Publication number: CN2371685Y
Application number: CN 99208550
Authority: CN
Inventors: 冯江
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-27
Filing date: 1999-04-27
Publication date: 2000-03-29
Anticipated expiration: 2009-04-27

Abstract

The utility model relates to a plug for an electrical appliance. The middle part of the front end of an insulating casing is provided with a vertical hole with an opening top end, and both sides of an upper section of the vertical hole are respectively provided with a vertical groove. A conducting strip is provided with a longitudinal groove, a strutting piece composed of a cylinder and two wing strips on the lower end of the cylinder is arranged in two groove holes and one vertical hole of the insulating casing, and a spring is also arranged in the vertical hole. As a result, the plug can be plugged in the socket and can not automatically pull off.

Description

The slip-off preventing appliance plug

The utility model relates to a kind of appliance plug.

At present, traditional appliance plug is that the elasticity by the spring leaf contact (copper sheet) in the socket clamps and keeps the favorable conductive contact, in fact, being provided with of spring leaf contact in the socket is difficult to guarantee suitable clamping force to plug, and (clamping force is excessive, hard even damage during disengaging, clamping force is too small, can not keep the good conductive contact), moreover long-term the use, the position of spring leaf contact and elasticity also easily change, in addition, plug is in socket, also can collide because of external force, factors such as vibration cause plug and socket loose contact, even come off.

In view of this, the purpose of this utility model provides a kind of slip-off preventing appliance plug, it is to be provided with can elastic force to strut sheet wall before or after the groove of socket on plug, the conducting strip (bar) of plug is remained in the spring chip contact in the socket slot, and can not come off automatically.

The purpose of this utility model is achieved in that it comprises an insulation shell and two conducting strips, wherein an end of this two conducting strip passes two slotted eyes that the insulation shell antetheca separates respectively and is fixed in the insulation shell, it is characterized in that: in the middle of the insulation shell front end, the vertical hole of its top end opening is set and offers a vertical slot respectively in these epimere both sides, vertical hole, offer a vertical groove on the conducting strip, the sheet that struts that two fins by a cylinder and lower end thereof constitute is set in two slotted eyes of insulation shell and a vertical hole, and vertically in the hole spring is set also.

The termination of described two fins is hook-shaped head.

Owing to adopt such scheme: appliance plug is unlikely to be caused appliance plug and socket loose contact, even comes off because the spring leaf contact elasticity of socket weakens and other extraneous power and vibration, and it is safe and reliable to guarantee that promptly plug is connected with socket.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model exemplary embodiments cross-sectional schematic.

The A-A cross-sectional schematic of Fig. 2 the utility model exemplary embodiments Fig. 1.

Among the figure: 1, insulation shell, 11, vertical hole, 111 vertical slots, 12, slotted eye, 2, conducting strip, 21, vertical groove, 3, spring, 4, strut sheet, 41, cylinder, 42, fin.

Present embodiment comprises that an insulation shell 1, two conducting strips 2, a spring 3 and strut sheet 4, as shown in Figure 1, 2, and wherein:

Insulation shell 1 is flat-shaped rectangle shell, and a vertical hole 11 of top end opening is set in the middle of its front end, offers two slotted eyes that separate 12 again on its antetheca, and 11 epimere both sides, above-mentioned vertical hole are also offered vertical slot 111 respectively.

Two conducting strips 2 are flat-shaped strip sheet, be fixed in the insulation shell 1 with the rear end, and front end pass corresponding slotted eye 12 outer being exposed at outside insulation shell 1 front end respectively, also offer a vertical groove 21 on this conducting strip 2.

Spring 3 (helical spring) is arranged on the vertical hole 11 interior (it is the vertical hole of end in contact 11 interior bottom faces down) of insulation shell 1.

Strutting sheet 4 is to stretch out two fins 42 that curve the right angle by a cylinder 41 and both sides, lower end thereof, the termination of this two fin 42 is hook-shaped head (ratchet shape), this cylinder 41 that struts sheet 4 is in the vertical hole 11 of insulation shell 1 and the last end in contact of its bottom and spring 3, and two fins 42 are in the antetheca slotted eye 12 of the vertical slot 111 in vertical hole 11 and insulation shell 1 and be in the vertical groove 21 on the conducting strip 2.

The operation of present embodiment and principle thereof:

When the conducting strip 2 of plug inserts socket, conducting strip 2 is sandwiched between the interior two-side elastic copper sheet of groove of socket, and strut sheet 4 under the elastic force of spring 3, the hook-shaped head of fin 42 slips in the slotted eye of socket and against the antetheca (or rear wall) of groove, the slotted eye end face of common socket has stretches shoulder (keeping out elastic copper sheet throws off) in groove in one, as shown in Figure 1, because also being stretched out shoulder in above-mentioned, the hook-shaped head of fin 42 keeps out, so, conducting strip 2 can't be thrown off the slotted eye of socket, reaches the purpose that preventing plug from dropping falls; If will take out the conducting strip 2 of plug, have only hand to push to strut cylinder 41 tops of sheet 4, compression spring 3 enters in the vertical groove 21 of conducting strip 2 (not exposing) fin 42, just can take out conducting strip 2 from socket.

Claims

1, a kind of slip-off preventing appliance plug comprises an insulation shell (1) and two conducting strips (2), wherein an end of this two conducting strip (2) passes two slotted eyes (12) that insulation shell (1) antetheca separates respectively, and be fixed in the insulation shell (1), it is characterized in that: the vertical hole (11) that its top end opening is set in the middle of insulation shell (1) front end, and offer a vertical slot (111) respectively in these epimere both sides, vertical hole (11), offer a vertical groove (21) on the conducting strip (2), what be provided with in two slotted eyes (12) of insulation shell (1) and a vertical hole (11) that two fins (42) by a cylinder (41) and lower end thereof constitute struts sheet (4), and vertically in the hole (11) spring (3) is set also.

2, by the described slip-off preventing appliance plug of claim 1, it is characterized in that: the termination of described two fins (42) is hook-shaped head.