CN2836267Y

CN2836267Y - Safe plug

Info

Publication number: CN2836267Y
Application number: CN 200520051729
Authority: CN
Inventors: 曾岳衡
Original assignee: Individual
Current assignee: Hunan University of Arts and Science
Priority date: 2005-08-21
Filing date: 2005-08-21
Publication date: 2006-11-08
Anticipated expiration: 2015-08-21

Abstract

The utility model discloses a safe plug, which comprises an insulating plug body and a metallic piece, wherein the circumference of the metallic piece is provided with at least one telescopic insulating sheath which is made of rigid plastics. One end of the insulating sheath in a longitudinal direction is provided with an opening which is matched with the outer diameter of the plug body and can be longitudinally moved along the plug body, and the other end is provided with an opening which can be moved longitudinally along the metallic piece. The insulating sheath and the plug body are provided with elastic devices which make the insulating sheath automatically come back to a safe state, and are also provided with devices which make the insulating sheath and the plug body correspondingly positioned. The insulating sheath can also be made of elastic insulating material which is sheathed outside the metallic piece. The insulating sheath of the safe plug is always covered outside the metallic piece such as a copper piece. Therefore, the utility model completely avoids a possibility that a hand is in contact with an electriferous copper piece and namely, the safe plug completely avoids electric shock accidents caused by the possibility. Particularly, the utility model completely avoids the electric shock accidents which are generated because children are in contact with the electriferous copper piece. The safe plug has the advantages of convenient use and reliable safety performance.

Description

Safety plug

Technical field

The utility model relates to a kind of electrical equipment plug, specifically is a kind of safety plug.

Background technology

Existing plug is made up of the plug body of insulation and the lead of conductive metal sheet (being generally copper sheet) and connecting circuit etc., generally is divided into two metal sheets plug and three sheet metal plugs.During use, especially insert, extract out in the process of socket, the very most of of sheet metal exposes outside, and hand accidentally just is easy to touch charged sheet metal, and the electric shock accidents that causes thus happens occasionally, and especially children are more vulnerable to injury.

The utility model content

The technical problems to be solved in the utility model is, overcomes the defective of above prior art, avoids staff to touch the safety plug that sheet metal gets an electric shock when a kind of the use is provided.

Technical solution of the present utility model is, a kind of safety plug with following structure is provided, and comprises blind plug body, sheet metal, and at least one retractable insulating case is arranged around the described sheet metal.

The front end face of the extended insulating case of front end of described sheet metal.

Described insulating case can adopt the rigid insulation material, the opening of vertical end of described insulating case for matching with the plug body external diameter and can vertically moving along plug body, its other end has the opening that can vertically move along sheet metal, the elastic device that makes insulating case get back to safe condition is automatically arranged on described insulating case and the plug body, (location) device that makes both relative positionings is arranged on described insulating case and the plug body.

Described insulating case also can adopt and be enclosed within the outer insulating case of being made by elastic insulating material of sheet metal, and its rear end is fixed on the front end-plate outside of plug body or the root of exposed sheet metal, the opening of its front end for vertically moving along sheet metal.

After adopting above structure, the utlity model has following advantage:

Because no matter this plug is in inserting the socket process in use, extracts out in the socket process, still in the time of in inserting socket, its insulating case covers on outside the sheet metal all the time, so, avoided the possibility of hand contact electrification sheet metal fully, promptly avoided the electric shock accidents that causes thus, the electric shock accidents of having avoided children to take place especially fully fully because of the contact electrification sheet metal, the safety plug is easy to use, and security performance is reliable.

Description of drawings

Fig. 1 is a kind of embodiment of safety plug such as the structural representation of rotating two metal sheets plug.

Fig. 2 looks schematic diagram for the left side of Fig. 1.

Fig. 3 is the A-A sectional structure schematic diagram among Fig. 2.

Fig. 4 is the schematic diagram in the plug insertion socket among Fig. 3 the time.

Fig. 5 is the structural representation of the another kind of embodiment of safety plug as three sheet metal plugs.

Fig. 6 looks schematic diagram for the left side of Fig. 5.

Fig. 7 is the A-A sectional structure schematic diagram among Fig. 6.

Fig. 8 is the schematic diagram in the plug insertion socket among Fig. 7 the time.

Fig. 9 is the structural representation of the elastic insulated cover of the outer directly cover of another kind of again embodiment of safety plug such as two metal sheets.

Figure 10 looks schematic diagram for the left side of Fig. 9.

Figure 11 is the schematic diagram in the plug insertion socket shown in Figure 9 the time.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

To shown in Figure 11, the safety plug comprises blind plug body 1, sheet metal 3 and lead 5 etc. as Fig. 1.At least one retractable insulating case 2,12 is arranged around the described sheet metal 3.The front end of described sheet metal 3 stretches out the front end face of insulating case 2,12, and its effect is an energy rapid alignment when making it insert socket 13 at first, makes easy to operate.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8.

Described insulating case 2 can adopt the rigid insulation material, as hard plastic or bakelite etc.The opening (in figure unmarked) of vertical end of described insulating case 2 for matching with plug body 1 external diameter and can vertically moving along plug body 1, its other end have the opening that can vertically move along sheet metal 3.The elastic device that makes insulating case 2 get back to safe condition is automatically arranged on described insulating case 2 and the plug body 1, have on described insulating case 2 and the plug body 1 that to make both be insulating case 2 and the device of plug body 1 relative positioning.

The described other end can various ways can be arranged along the opening that sheet metal 3 vertically moves, the opening (not shown) that matches as distribution, distance and cross section with fixing two metal sheets 3; The opening 17 that matches with distribution, distance, the cross section of fixing three sheet metals 3; Supply the circular open 16 of the two sheet metals rotations that turn etc.

Described elastic device refers to, between the front end-plate 8 of insulating case 2 and the front end-plate 11 of plug body 1 stage clip 7 is arranged, stage clip 7 is enclosed within on the axis of guide 6, and the axis of guide 6 sliding fits are in the centre bore of the front end-plate 11 of plug body 1, and the axis of guide 6 and stage clip 7 are fixed on the front end-plate 8 of insulating case 2.

The device of described location refers to, the relative both sides of plug body 1 are respectively equipped with an elasticity button and stumble, the front end of plug body 1 relative both sides is respectively equipped with an outside boss 14, insulating case 2 is stumbled with the elasticity button and there is the inside boss 15 that matches with it boss 14 relative positions, during installation, because of the opening part of insulating case 2 certain elasticity being arranged is tension force, so prize on the plug body 1 of just can packing into bottle opener etc.Described elasticity button is stumbled by elastomer block 4, is formed a whole by piece 10, right-angled triangle locating piece 9.Described elastomer block 4 is a rectangle, and it is the part of plug body side plate, and one end and plug body side plate are connected as a single entity, and its other end and both sides and plug body side plate are separated into free section; The hypotenuse of described triangle locating piece 9 tilts from height to low front end to plug body 1.Described elastomer block 4 can be lined with the elastic sheet metal (not shown) with the inboard, junction of plug body side plate, to play reinforcing and to strengthen its flexible effect.When plug insertion socket put in place, the boss 15 of insulating case 2 was stuck in the straight flange of the triangle locating piece 9 that the elasticity button stumbles; When extracting plug out, downwards by the elasticity button stumble two by piece 10, the boss 15 and the straight flange of triangle locating piece 9 are broken away from, the spring 7 safeguard protection state that just insulating case 2 rebounded.

As Fig. 9, Figure 10, shown in Figure 11, described insulating case also can adopt the insulating case 12 by elastic insulating material such as soft rubber making that is enclosed within outside the sheet metal 3, the root of the fixing as gluing front end-plate outside that is connected on plug body 1, its rear end or exposed sheet metal 3, its front end have the opening 18 that can vertically move along sheet metal 3.

Described positioner also can adopt in the insulating case inboard projection at least one, and dead-centre position has the inside recess that matches with interior projection at the two ends on plug body surface, and described interior projection is connected with the button of being located at the insulating case surface or shifting block and controlled by it.Described positioner also can adopt other multiple structures of prior art, as the hook of being located on the insulating case cooperates etc. with hanging hole on being located at plug body.Described elastic device under the situation of front end-plate cross-sectional area permission, also can adopt pagoda spring and cancels the axis of guide etc.The structure of described insulating case yet can have multiple variation such as insulating case of being made by elastic insulating material such as medical flexible rubber hose of every sheet metal peripheral hardware, its rear end is fixed on the front end-plate outside of plug body or the root of exposed sheet metal equally, and insulating case also can adopt as plug body by two and distinguish the structure forming and fix with screw nut equally etc.All these variations all fall in the protection range of the present utility model.

Claims

1, a kind of safety plug comprises blind plug body (1), sheet metal (3), it is characterized in that: at least one retractable insulating case (2,12) is arranged around the described sheet metal (3).

2, safety plug according to claim 1 is characterized in that: the front end of described sheet metal (3) stretches out the front end face of insulating case (2,12).

3, safety plug according to claim 1 and 2, it is characterized in that: described insulating case (2) adopts the rigid insulation material, the opening of vertical end of described insulating case (2) for matching with plug body (1) external diameter and can vertically moving along plug body (1), its other end has the opening (16,17) that can vertically move along sheet metal (3), the elastic device that makes insulating case (2) get back to safe condition is automatically arranged on described insulating case (2) and the plug body (1), on described insulating case (2) and the plug body (1) device that makes both relative positionings is arranged.

4, safety plug according to claim 3, it is characterized in that: described elastic device refers to, between the front end-plate (8) of insulating case (2) and the front end-plate (11) of plug body (1) stage clip (7) is arranged, stage clip (7) is enclosed within on the axis of guide (6), the axis of guide (6) sliding fit is in the centre bore of plug body (1) front end-plate (11), and the axis of guide (6) and stage clip (7) are fixed on the front end-plate (8) of insulating case (2).

5, safety plug according to claim 3, it is characterized in that: the device of described location refers to, the relative both sides of plug body (1) are respectively equipped with an elasticity button and stumble, plug body (1) front end of both sides relatively is respectively equipped with an outside boss (14), and there is the inside boss (15) that matches with it position that insulating case (2) is stumbled with the elasticity button and boss (14) is relative.

6, safety plug according to claim 5 is characterized in that: described elasticity button is stumbled by elastomer block (4), is formed a whole by piece (10), right-angled triangle locating piece (9); Described elastomer block (4) is a rectangle, and it is the part of plug body side plate, and one end and plug body side plate are connected as a single entity, and its other end and both sides and plug body side plate are separated into free section; The hypotenuse of described triangle locating piece (9) tilts from height to low front end to plug body (1).

7, safety plug according to claim 6 is characterized in that: described elastomer block (4) is lined with elastic sheet metal with the inboard, junction of plug body side plate.

8, safety plug according to claim 1 and 2, it is characterized in that: the insulating case (12) by elastic insulating material making of described insulating case fingerstall outside sheet metal, its rear end is fixed on the front end-plate outside of plug body (1) or the root of exposed sheet metal (3), the opening (18) of its front end for vertically moving along sheet metal (3).