CN2243127Y

CN2243127Y - Wedge-type electric joint

Info

Publication number: CN2243127Y
Application number: CN 95230770
Authority: CN
Inventors: 王哲
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-07
Filing date: 1995-04-07
Publication date: 1996-12-18
Anticipated expiration: 2005-04-07

Abstract

The utility model discloses a wedge type electric joint used for the high and the lower voltage electrical installation project and the maintenance, the utility model is mainly used for connecting the end or the middle part of the line. The utility model is a series electric joint and can also be respectively assembled. The utility model comprises an end joint, a lap joint, a C-shaped wedge, a W-shaped wedge, wedge tightening nuts, a concave insulating sheath, and a convex insulating sheath. The combination of the joint and a wire core is completed by that the wedges are pushed between the inner wall of the wire barrel and the wire core by that the wedge nuts are engaged with threads on the joint. The utility model has the advantages of proper compression joint pressure, start / finish pressure equalization, small connecting resistance, stable connection, good thermal cycle property, no special tool, no maintenance, and simple manufacture; the copper and the aluminium can be connected in the mixing way.

Description

The wedge type Power tabs

The utility model relates to a kind of in electrical installation project and maintenance work, is used for connecting the Power tabs that high and low pressure becomes distribution, confession, generating circuit, is applicable to the indoor and outdoor use.

In existing technology, Power tabs is divided into crimp type (compression-type), screw bolt-type, packed type by the mode of its fastening force and in recent years by four kinds on the wedge-type of external introduction and ditch type.Test according to U.S. AMP Inc. and Britain CHESTER Committee on Electric Power research center is thought with the long-term work practice: the life-span of Power tabs is main relevant with two factors of operating temperature with initial pressure, under certain conditions, the contact resistance and the pressure of Power tabs are inversely proportional to, be that pressure is big more, contact resistance is more little.But for the crimp type Power tabs, initial pressure excessive (tens tons), through energising operation thermal circulation performance variation, so that the life-span is very short; For the screw bolt-type Power tabs, bolted power is little, and contact resistance is just big, and bolted power is big, will make joint distortion, and contact resistance also can rise, and degradation speed is accelerated; For the packed type Power tabs, because of charges are tin, tin is different with joint and wire core conductance, and contact resistance strengthens, and will add welding agent in the stowing operation, makes Power tabs and wire core heavy corrosion.More than several Power tabs all can not copper, the aluminium hybrid junction.Wedge-type and ditch type Power tabs performance is good, the life-span is long, contact resistance is invariable, but it can only be applicable to built on stilts plain conductor circuit, can not use in other cases.These several Power tabs all need be used the specific purpose tool Press Plier of specific purpose tool, particularly crimp type to cost except that screw bolt-type and reach more than 1,000 yuan.

The utility model purpose is to provide a kind of scope of application wide, and volume is little, isostasy, and contact resistance is low, but copper, aluminium hybrid junction, the life-span is long, the modular that makes up according to different needs, the Power tabs of using common tool to install.

The utility model purpose is achieved in that the wedge type Power tabs, comprise the end connector body, end connector body one end is the middle rectangle termination that has through hole, the other end is the cylinder of band endoporus (wire barrel), the cylinder outer surface has external screw thread and positive hexagon successively from the end, on the cylinder external screw thread, be screwed with a tight wedge nut, tight wedge nut one end has end slot, there is cable-through hole at the middle part, also join in the cylinder endoporus and be inserted with two C shape wedges, each C shape wedge is a semi arch cone sheet, and the cone plate inner surface is placed with vertical wire casing, also twists on tight wedge nut outer surface and is with the spill insulating sleeve.

The wedge shape Power tabs, comprise the lap joint body, the lap joint body is combined by two hollow round column bodies of size, all there is screw thread at cylinder outer surface two ends, the middle part is positive hexagon, on big hollow cylinder external surface, be screwed with tight wedge nut, tight wedge nut one end has end slot, there is cable-through hole at the middle part, also join in this cylinder endoporus and be inserted with two W shape wedges, each W wedge is two half arc cone sheets, and the cone plate inner surface is placed with vertical wire casing, on tight wedge nut outer surface, also be screwed with the spill insulating sleeve, twist at little hollow cylinder external surface and be with the convex insulating sleeve.

The wedge type Power tabs is made up of fittings body (end connector body and lap joint body), wedge (double C shape wedge and two W shape wedge), tight wedge nut, five parts of concave, convex shape insulating sleeve.Can consist of respectively according to purposes: 1, end formula wedge type Power tabs, form by end connector body, double C shape wedge, tight wedge nut, four parts of spill insulating sleeve, can be used on electric equipment output or input; 2, line-disparting type wedge type Power tabs is made up of end connector body, two W shape wedge, tight wedge nut, four parts of spill insulating sleeve, can be used on the electric equipment output, can make a termination two lines; 3, bridging type wedge type Power tabs, by the lap joint body, two W shape wedges, tight wedge nut, recessed, four parts of convex insulating sleeve are formed, on the available overlap joint of two lines in the line, the characteristics of wedge type Power tabs are: utilize the revolving force promotion wedge of threaded engagement on tight wedge nut and the fittings body to enter between fittings body and the wire core, fittings body and wire core are linked together securely, in tight wedge, the wire barrel inwall is removed in electric force compounded grease (conductive paste) friction that utilizes wire casing and wedge two sides to scribble, the electric wire surface oxide layer, the space of wire core in the filling wire barrel, increase contact area effectively, guaranteed the low resistance contact between the simple metal, and pressure is suitably stable.Describe installation process with using to example of end formula wedge type Power tabs: the electric wire core print that will peel off insulating barrier passes from the through wires hole of spill insulating sleeve with tight wedge nut, put into the wire barrel of end connector body, again two C shape wedges are inserted between wire barrel and the wire core along the wire core cylindrical, external screw thread interlock with the internal thread and the end connector body of tight wedge nut, positive hexagon with a spanner stiff end fittings body, rotate tight wedge nut with another spanner again, inside and outside two screw threads are overlapped to be tightened, twist again and put the spill insulating sleeve, to hold the crimping hole of formula wedge type Power tabs to put on the terminals that screw is connected on equipment at last, promptly finish wiring work.

Advantage of the present utility model is: 1, adopt C shape, W shape wedge wedging mode, wire core is indeformable; 2, replaceable wedge adapts to not collinear footpath in certain limit, can an end multichannel wiring, use repeatedly; 3, be applicable to the update of terminals such as switch, fuse, contactor, reduce contact; 4, adopt tight wedge nut to make electric wire stressed evenly, do not release; 5, without specific purpose tool, the operating space is little, and is convenient and strength-saving, improves work efficiency; 6, scribble conductive paste, increase contact area, reduce contact resistance, reduce caloric value, make copper one aluminum steel, a soft rigid line connects need not be zinc-plated, can reach conduction evenly, non-maintaining, energy savings; 7, multinomial measure secluding air, accommodative ability of environment is strong; 8, save copper, aluminium, tight wedge nut, lap joint all can be made of general iron material, and mechanical strength is good, and volume is little; 9, adopt the flame retardant plastics insulating sleeve, good looking appearance, good insulation preformance does not burn; 10, can form multiple combining form according to the different needs that uses.

Below in conjunction with accompanying drawing the utility model structure is further described:

Fig. 1 is an end connector body front view

Fig. 1-the 1st, end connector body left view

Fig. 1-2 is an end connector body right view

Fig. 1-the 3rd, end connector body vertical view cutaway drawing

Fig. 2 is a C shape wedge front view

Fig. 2-the 1st, C shape wedge left view

Fig. 2-the 2nd, C shape wedge right view

Fig. 2-the 3rd, C shape wedge vertical view

Fig. 3 is a lap joint body front view

Fig. 3-the 1st, lap joint body left view

Fig. 3-the 2nd, lap joint body right view

Fig. 3-the 3rd, joining seam body cutaway view

Fig. 4 is a W shape wedge front view

Fig. 4-the 1st, W shape wedge left view

Fig. 4-the 2nd, W shape wedge right view

Fig. 4-the 3rd, W shape wedge vertical view

Fig. 5 is tight wedge nut front view

Fig. 5-the 1st, tight wedge nut left view

Fig. 5-the 2nd, tight wedge nut right view

Fig. 5-the 3rd, tight wedge nut cutaway view

Fig. 6 is a convex insulating sleeve front view

Fig. 6-the 1st, convex insulating sleeve left view

Fig. 6-the 2nd, convex insulating sleeve right view

Fig. 6-the 3rd, convex insulating sleeve cutaway view

Fig. 7 is a spill insulating sleeve front view

Fig. 7-the 1st, spill insulating sleeve left view

Fig. 7-the 2nd, spill insulating sleeve right view

Fig. 7-the 3rd, spill insulating sleeve cutaway view

Referring to Fig. 1, end connector body Fig. 1 (comprising Fig. 1-1, Fig. 1-2, Fig. 1-3) has the rectangle termination 12 of through hole and the cylinder of the band endoporus that is attached thereto constitutes by the centre, through hole on 12 planes, termination is crimping hole 11, periphery has external screw thread 14 and positive hexagon 13 successively from the end, bore portion is a wire barrel 15 in the cylinder.Termination 12 and crimping hole 11 are to establish for the connecting circuit terminals, positive hexagon 13 is to establish with spanner stiff end joint face when connecting wire core for end connector Fig. 1, external screw thread 14 is to enter wire barrel 15 interior establishing for pushing away wedge Fig. 2, Fig. 4 with 53 interlocks of tight wedge nut Fig. 5 internal thread, and wire barrel 15 is for wedge wire core and fastening the linking into an integrated entity of end connector body Fig. 1 being established.

Referring to Fig. 2, C shape wedge Fig. 2 (comprising Fig. 2-1, Fig. 2-2, Fig. 2-3) is a semi arch cone sheet, form by little and thin wedge head 22, big and thick wedge tail 21 and the wedge wing 23 of wedge both sides and wire casing 24 4 parts between the two wedge wings 23, be beneficial in the wire barrel 15 of upstream end fittings body Fig. 1, and hold wire core tightly.Two C shape wedge Fig. 2 constitute a complete interior empty wedge, the wire barrel 15 inwall complementations of outer wall and end connector body Fig. 1, wire casing 24 and wire core complementation on the inwall scribble electric force compounded grease on the wedge inside and outside wall, and the size of C shape wedge is directly determined by wire barrel 15 and the electric wire line of end connector body Fig. 1.

Referring to Fig. 3, lap joint body Fig. 3 (comprises Fig. 3-1, Fig. 3-2, Fig. 3-3) is a kind of distortion of end connector body Fig. 1, be to combine by two hollow cylinders of size, there is external screw thread 31.33 in the cylinder outside, in the middle of two external screw threads is positive hexagon 32, two electric conduits that vary in size that communicate 34 and overlap joint pipe 35 are arranged in the cylinder, external screw thread 31 interlock convex insulating sleeve Fig. 6 internal threads 63 on the electric conduit 34 constitute lap joint body Fig. 3 one side insulation sheath, the two wire cores that the tight wedge nut of external screw thread 33 interlocks Fig. 5 internal thread 53 promotion W shape wedge Fig. 4 on the overlap joint pipe 35 will overlap in the overlap joint pipe 35 of lap joint body Fig. 3 connect together, positive hexagon 32 be for spanner fixedly lap joint body Fig. 3 establish, electric conduit 34 is introduced overlap joint for the wire core that will overlap and is managed 35 and establish.

Referring to Fig. 4, W shape wedge Fig. 4 (comprising Fig. 4-1, Fig. 4-2, Fig. 4-3) is two C shape wedges according to circular wire core overlap joint shape level and is connected into.Two W shape wedges constitute a whole wedge, outer wall is the circular cone cylindricality, inwall is two circular cone posts, half polymers, act on identical with C shape wedge, be used for end connector body Fig. 1 and divide wiring and lap joint body Fig. 3 to overlap electric wire, there are wedge head 42, wedge tail 41 in two ends, and there is the wedge rib 45 of horizontal direction at the center, wedge rib 45 both sides have 44, two wire casing 44 outsides of two wire casings that a wedge wing 43 is arranged respectively.In the overlap joint pipe 35 of wedge head 42 for the wire barrel 15 of smooth upstream end fittings body Fig. 1 or lap joint body Fig. 3, must be made into little and thin, and, reach purpose with wedge wedging two wires to strengthening thickening gradually along wedge tail 41 directions, scribble electric force compounded grease in the wire casing of W shape wedge Fig. 4.

Referring to Fig. 5, tight wedge nut Fig. 5 (containing Fig. 5-1, Fig. 5-2, Fig. 5-3) is that hexagonal cylinder and cylinder empty in formed, outer-hexagonal constitutes hex nut 51, be beneficial to spanner and rotate tight wedge nut Fig. 5, the cylinder outside has external screw thread 54 and internal thread 72 interlocks of spill insulating sleeve Fig. 7 to constitute the insulating barrier of end connector body Fig. 1, or constitutes the opposite side insulating barrier of lap joint body Fig. 3.The inside branch has internal thread 53 and the external screw thread 14 of end connector body figure or external screw thread 33 interlocks of lap joint body Fig. 3 to produce the wedge power that pushes away, the tight wedge groove 52 that has end slot to constitute successively, pushing away the wedge masterpiece is used on the tight wedge groove 52, promote in the wire barrel 15 of C shape wedge Fig. 2 or W shape wedge Fig. 4 upstream end fittings body Fig. 1 or enter in the overlap joint pipe 35 of lap joint body Fig. 3, have through wires hole 55 to enter in tight wedge nut Fig. 5 for the core of being connected wires.

Referring to Fig. 6, convex insulating sleeve Fig. 6 (comprising Fig. 6-1, Fig. 6-2, Fig. 6-3) wraps up for the insulation of lap joint body Fig. 3 designing, constitute lap joint body Fig. 3 insulating barrier integral body with spill insulating sleeve Fig. 7, form by the protruding tongue 61 of interior sky, positive hexagon 62 and pipe body 64.Also has internal thread 63 in the positive hexagon 62.Protruding tongue 61 is to establish for making up with spill insulating sleeve Fig. 7, and positive hexagon 62 is that spanner is fastening to be established in order to utilize, and internal thread 63 is to establish for the external screw thread 31 of interlock lap joint body Fig. 3, constitutes the insulating barrier of lap joint body Fig. 3 one end.The effect of pipe body 64 is to strengthen wire insulation and color mark.

Referring to Fig. 7, spill insulating sleeve Fig. 7 (containing Fig. 7-1, Fig. 7-2, Fig. 7-3) is synthetic by the positive hexagon 71 of interior sky and pipe body 73, in the positive hexagon internal thread 72, sheath 74 is arranged.Positive hexagon 71 is for ease of using spanner fastening and establish, and sheath 74 forms tight wedge nut Fig. 5 external insulation, and constitutes lap joint body other end insulating barrier.The effect of pipe body 73 is identical with the pipe body 64 of convex insulating sleeve Fig. 6, is not repeated.

Manufacturing of the present utility model: 1, the end connector body adopts the copper material casting or forms with the mold pressing of heavy wall copper pipe, then thread cutting and conical inboard wall; 2, lap joint, tight wedge nut manufacture method are identical with end connector, the employing ferrous material; 3, C shape and W shape wedge adopt copper coin mold pressing manufacturing; 4, the concave, convex insulating sleeve adopts plastic mould pressing and injection moulding to make.

Claims

1, a kind of wedge type Power tabs, comprise the end connector body, it is characterized in that end connector body one end is the middle rectangle termination that has through hole, the other end is the cylinder of band endoporus (wire barrel), the cylinder outer surface has external screw thread and positive hexagon successively from the end, on the cylinder external screw thread, be screwed with a tight wedge nut, tight wedge nut one end has end slot, there is cable-through hole at the middle part, also join in the cylinder endoporus and be inserted with two C shape wedges, each C shape wedge is a semi arch cone sheet, and the cone plate inner surface is placed with vertical wire casing, also twists on tight wedge nut outer surface and is with the spill insulating sleeve.

2, a kind of wedge type Power tabs, comprise the lap joint body, it is characterized in that the lap joint body is combined by two hollow cylinders of size, all there is screw thread at cylinder outer surface two ends, the middle part is positive hexagon, on big hollow cylinder external surface, be screwed with tight wedge nut, tight wedge nut one end has end slot, there is cable-through hole at the middle part, also join in this cylinder endoporus and be inserted with two W shape wedges, each W shape wedge is two semi arch cone sheets, and the cone plate inner surface is placed with vertical wire casing, on tight wedge nut outer surface, also be screwed with the spill insulating sleeve, twist at little hollow cylinder external surface and be with the convex insulating sleeve.