CN2218983Y - Structure improved conduction copper holder of motor carbon brush holder - Google Patents

Abstract

The utility model relates to a structure improved conduction copper holder of motor carbon brush holders, which is composed of a conduction copper holder, a conduction terminal, and bakelite plastics, wherein, the conduction copper holder is punched into unit sheets once by a copper sheet; a convex extension conduction end piece, a lug, a notch groove, and a scarfer are positioned on the unit pieces; a strip flange is also positioned on the unit sheets. The unit sheets are folded into the hollow cross conduction copper holder by being punched; the bottom of the unit sheets is inserted into a hollow cross slot of the bakelite plastics; the flange is fastened with the pushing inclination of the groove; the lug which is positioned at a socket at the end of the bakelite plastics is outwards and vertically folded and positioned; the lug which is positioned at the bottom of the copper holder is exerted. The utility model has the advantages that the effects of contact conduction are favorable, and the manufacture is easy.

Description

Improve the carbon brush for electric machine seat conductive copper seat of structure

The utility model relates to a kind of motor component, relates to the conductive copper holder structure of carbon brush for electric machine seat or rather.

The carbon brush holder of conventional motors, shown in the cross-section structure of the three-dimensional decomposition texture of Fig. 1 and Fig. 2, the conductive copper seat of carbon brush holder is taken out the type made from copper bar 1, again 11 of conducting terminals are welded on the conductive copper seat after the moulding of conductive copper seat, and then at cross carbon brush holder both sides end face difference car one arc groove 12, for the bakelite plastic cement 2 that pins down and locate injection mo(u)lding.The end face 14 of its bottom is coated by bakelite plastic cement 2, and after inserting carbon brush 13, carbon brush 13 utilizes a copper pigtail 131 to be connected with spring 132 with 133 of bottom end.If can not contact with end face 14 fully after inserting, will influence the normal conduction of carbon brush 13, produce the unsettled situation of electric current, also need this moment the part that the bottom is coated is struck off, guarantee that copper material exposes.But after coating, copper bar 1 below be a bottom lock hole 21, undermine thread 22 easily when doing reprocessing, thereby be difficult for attrition process, and all can produce sum of errors generation lifetime in each rework process, pad is loosening, be difficult for problems such as reprocessing; In addition, to take out the carbon brush holder of system mode moulding, the copper material of consumption is many, weight is also heavy, and cost of manufacture improves relatively, and is difficult for carrying out automated production.

The purpose of this utility model is to improve the conductive copper holder structure of carbon brush for electric machine seat, makes to have the excellent contact conductive effect, and the bond strength between raising copper seat and bakelite plastic cement.

The utility model improves the carbon brush for electric machine seat conductive copper seat of structure, is made of conductive copper seat, conducting terminal and bakelite plastic cement, and end has alveolus in the bakelite plastic cement ducted body, it is characterized in that:

Described conductive copper seat is the one time punching molded cross ducted body that is dice, forms after the punching press bending by copper sheet; Dice bottom center place is a lug, and dice two bottom sides limit is half lug, complementary respectively opposite scarfer of shape and the angle shape groove of being provided with of dice dual-side, and the unilateral upward interval punching press in unit has the strip flange; Described conducting terminal is to be positioned at the conductive end piece that dice center of top place is the projection shape; Described bakelite plastic cement hollow bulb is the cross bath with pushing gradient; Described conductive copper seat is rabbeted the three-dimensional composition surface that forms the conductive copper seat with the scarfer of dice dual-side and the complementarity of angle shape groove, and the semi-convex ear on dice two bottom sides limit is merged into and another relative lug of dice bottom center place lug position; Described cross conductive copper seat bottom embeds in the hollow form cross recess of bakelite plastic cement, and strip flange and the cross recess pushing gradient location of tightly pulling, and two lugs are vertically rolled over outwardly and put in the terminal alveolus of bakelite plastic cement bottom the conductive copper seat.

Conductive copper seat bottom caulked is in the hollow pushing shape cross recess of bakelite plastic cement, strip flange on its face and cross recess generation are tightly pulled and are located, conductive copper seat bottom lugs vertical outwardly folding in the terminal alveolus of bakelite plastic cement is put, form of the insulation coating of bakelite plastic cement to conductive copper seat bottom, but bottom two lugs expose really again and are not coated, the anti-skidding effect of anti-block is arranged, and because of lug is darted at the terminal slot part of carbon brush holder, and the excellent contact conductive effect is arranged; The hollow pushing shape cross recess of bakelite plastic cement can make the suitable distance of conductive copper seat embedding promptly produce tightly pull location and no longer downslide, and lug is vertically rolled over to put outwardly and can be prevented the outside slippage of copper seat in addition, has strengthened the bond strength of copper seat and bakelite plastic cement; The dice dual-side of moulding is respectively breach groove and scarfer, because the copper sheet after the punching press has elasticity, is difficult for fixed engagement, thus the junction surface of breach groove and scarfer is designed to the angle shape, can guarantee smoothly in conjunction with and the space of the extension of supplying arranged.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing:

Fig. 1 is the three-dimensional exploded view of conventional motors carbon brush holder;

Fig. 2 is the sectional structure chart of conventional motors carbon brush holder;

Fig. 3 is this improvement construction unit chip architecture schematic diagram;

Fig. 4 is this improvement structural conductive copper seat perspective view;

Fig. 5 is this improvement structural electromotor carbon brush holder structure cutaway view;

Fig. 5 is this improvement structural carbon brush holder conductive copper seat bottom view;

Fig. 7 is the location schematic diagram of tightly pulling of this improvement structural conductive copper seat;

Fig. 8 is the carbon brush for electric machine seat conductive copper seat perspective view of this improvement structure.

Address before Fig. 1, Fig. 2 illustrate, repeat no more.

Referring to Fig. 3, Fig. 4, improve the carbon brush for motor conductive copper seat of structure, wherein the conductive copper seat is one time punching molded by copper sheet is dice, as shown in Figure 3.This dice center of top is one to protrude out the conductive end piece 32 of shape, bottom center is a lug 33, one side has two breach grooves 34, another side then has complementary with it two scarfers 35 that are provided with, two bottom sides respectively has half lug 331,332, sets up two strip flanges 36 separately with suitable spacing again on the unit is unilateral.Dice is through forming hollow form cross conductive copper seat 31 after the punching press bending continuously, as shown in Figure 4.Two semi-convex ears 331,332 of bottom portion side end are merged into a complete lug after the punching press bending, as shown in Figure 4.Breach groove 34 is designed to complementary angle shape with scarfer 35 in addition, gives copper sheet after the punching press with the elasticity space of extending, and makes in conjunction with smoothly and promote bond strength.

Referring to Fig. 5 to Fig. 8, conductive copper seat 31 bottom caulkeds are gone in the hollow form cross recess 41 of bakelite plastic cement 4, tightly pull with the pushing gradient generation of cross recess 41 until copper seat two side flanges 36 and locate and no longer downslide, as shown in Figure 7.Copper seat bottom lugs 33 can expose the effect that is not coated and 31 slippages of block copper seat are arranged really, and as shown in Figure 6, the conductive copper seat stereochemical structure after the assembling is referring to Fig. 8.Because of lug 33 is darted at the root edge place of the terminal slot part of carbon brush holder, insert the carbon brush 5 that combines by graphite, spring and copper lobe again, just constitute complete carbon brush holder, as shown in Figure 5.

In sum, improvement structure of the present utility model really can be exempted the rework process after the moulding of carbon brush for electric machine seat, and brush holder is made in one-body molded mode, in light weight, volume is little, copper material exposes really, the problem of having eliminated conventional carbon brush holder bottom to be coated by plastic cement and can't having conducted electricity smoothly helps automation ground and produces in batches.

Claims (1)

1, a kind of carbon brush for electric machine seat conductive copper seat that improves structure is made of conductive copper seat, conducting terminal and bakelite plastic cement, and end has alveolus in the bakelite plastic cement ducted body, it is characterized in that:

Described conductive copper seat is the one time punching molded cross ducted body that is dice, forms after the punching press bending by copper sheet; Dice bottom center place is a lug, and dice two bottom sides limit is half lug, complementary respectively opposite scarfer of shape and the angle shape groove of being provided with of dice dual-side, and the unilateral upward interval punching press in unit has the strip flange; Described conducting terminal is to be positioned at the conductive end piece that dice center of top place is the projection shape; Described bakelite plastic cement hollow bulb is the cross bath with pushing gradient; Described conductive copper seat is rabbeted the three-dimensional composition surface that forms the conductive copper seat with the scarfer of dice dual-side and the complementarity of angle shape groove, and the semi-convex ear on dice two bottom sides limit is merged into and another relative lug of dice bottom center place lug position; Described cross conductive copper seat bottom embeds in the hollow form cross recess of bakelite plastic cement, and strip flange and the cross recess pushing gradient location of tightly pulling, and two lugs are vertically rolled over outwardly and put in the terminal alveolus of bakelite plastic cement bottom the conductive copper seat.

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