CN207910209U - glass lifting motor commutator - Google Patents

Abstract

It the utility model discloses glass lifting motor commutator, including commutator base and copper segment, is dielectrically separated from by mica sheet between adjacent copper segment, the top of copper segment is equipped with bonding wire crotch, it is characterised in that：The inside of bonding wire crotch position at the top of hook mold the both ends angles R, middle straight line forming surface；The commutator base is made of the upper matrix and lower substrate of secure bond, and the copper segment makees circumference arrangement in the outer circle of lower substrate, and copper segment is strong bonded by the fixed feet and lower substrate of its medial surface.The utility model this have the advantage that：Bonding wire crotch row and problem of faulty soldering are solved, commutator weight is reduced, avoids reinforcing ring from being generated with copper segment and contacts.

Description

Glass lifting motor commutator

Technical field

The utility model is related to commutator technical fields, and in particular to a kind of improvement of vehicle glass lifting engine commutator Invention.

Background technology

Vehicle glass lifting engine commutator makees changing for circumference arrangement by commutator base and in the outer circle of commutator base It being formed to device copper sheet, the top of copper segment is equipped with bonding wire crotch, the disadvantage is that：1. position is inside and outside circle at the top of the hook of bonding wire crotch Arc, so the hook top intensity of bonding wire crotch is weaker, bonding wire crotch stress, which will appear, in such pinpoint welding procedure arranges, and is easy enamel-cover Line crushes damage, and the Inner arc very little of hook top position, arc radius are less than the radius of enameled wire, such bonding wire crotch hook Can be there are larger gap between the inside and enameled wire of top position, the two cannot contact very well, and it is existing that point postwelding is susceptible to rosin joint As；2. the fully integrated molding of commutator base, to ensure the works fine performance of commutator, the phenolic moulding powder used in commutator base Material has strict demand and the big weight weight of density, but since the top end surface of commutator base has high protrusion, so will make Can be heavier at the weight of commutator, rotary inertia also can be larger, influences the working performance of commutator；3. in the injection molding of commutator In forming process, since reinforcing ring cannot obtain good location, the contact between reinforcing ring and copper segment is often resulted in, such as Fruit copper segment is metal material, that just directly results in the generation of waste product.

Invention content

In view of the deficiency of background technology, fall to arrange the purpose of the utility model is to provide a kind of solution bonding wire crotch and rosin joint Problem reduces product weight, and reinforcing ring is avoided to generate the glass lifting motor commutator contacted with copper segment.

The utility model adopts the following technical scheme that complete：

Glass lifting motor commutator, including commutator base and copper segment, by cloud between adjacent copper segment Master slice is dielectrically separated from, and the top of copper segment is equipped with bonding wire crotch, it is characterised in that：The inside of bonding wire crotch is on hook top Position mold the both ends angles R, middle straight line forming surface.

Using the glass lifting motor commutator of above-mentioned technical proposal, the inside of bonding wire crotch molds two in position at the top of hook Hold R angles, middle straight line shape, this not only enables more preferably to be connect between the inside of position at the top of enameled wire and bonding wire crotch hook It touches, and the most key bending strength for being the increase in crotch hook top, in this way in pinpoint welding procedure, although bonding wire crotch stress But it is fallen after being insufficient to allow entire crotch and the row of falling occurs, to avoid enameled wire crushing damage, therefore can not ensured more preferably Existing rosin joint phenomenon.

Preferably, the commutator base is made of the upper matrix and lower substrate of secure bond, the copper segment Make circumference arrangement in the outer circle of lower substrate, copper segment is strong bonded by the fixed feet and lower substrate of its medial surface.Pass through Above-mentioned design, glass lifting motor commutator have Double substrate micro structure, upper matrix and lower base of the commutator base by secure bond Body form, copper segment the outer circle of lower substrate make circumference arrangement and with lower substrate firm connection, so, as long as lower base Body uses the bakelite powder material of excellent performance, and light weight, modeling at low cost, meeting basic demand then can be selected in upper matrix Expect material, then can effectively reduce the weight of commutator, is conducive to improve the working performance of commutator.

The bond strength between lower substrate is gone up for enhancing, preferably, the combination end face of the upper matrix and lower substrate is set Have it is corresponding protrusion and it is recessed, and endoporus circumferential position setting lantern ring upper lower substrate is restrained.

Preferably, the upper and lower end face of the copper segment is equipped with reinforces annular groove up and down, reinforce setting in annular groove up and down The medial surface of reinforcing ring, the mica sheet is equipped with locating slot, and reinforcing ring is positioned by the locating slot.Pass through upper design, glass Glass commutator of elevating motor is in injection molding process, and since the medial surface of mica sheet is equipped with locating slot, locating slot can be to reinforce Ring provides accurately positioning, is contacted so can avoid generating between reinforcing ring and copper segment as possible, prevents waste product It generates.

Description of the drawings

The utility model has following attached drawing：

Fig. 1 is the shape assumption diagram of the utility model,

Fig. 2 is the A-A sectional views of Fig. 1,

Fig. 3 is the portions the I enlarged drawing of Fig. 2.

Specific implementation mode

As shown, the glass lifting motor commutator of the utility model, including commutator base and copper segment 1, It is dielectrically separated from by mica sheet 2 between adjacent copper segment 1, the medial surface of mica sheet 2 is equipped with locating slot 9, commutator The top of piece 1 is equipped with bonding wire crotch 10, the inside of bonding wire crotch 10 position at the top of hook mold the both ends angles R, middle straight line at Type face 11, enameled wire line footpath of the size slightly larger than spot welding therewith after the both ends angles R are added with middle straight line.The commutator base by The upper matrix 3 and lower substrate 8 of secure bond form, and the copper segment 1 makees circumference arrangement in the outer circle of lower substrate 8, commutate Device copper sheet 1 is strong bonded by the fixed feet 7 and lower substrate 8 of its medial surface, the combination end face of the upper matrix 3 and lower substrate 8 Upper lower substrate is restrained equipped with corresponding protrusion and recessed 4, and in endoporus circumferential position setting lantern ring 5；The commutation The upper and lower end face of device copper sheet 1 is equipped with reinforces annular groove up and down, reinforces that reinforcing ring 6 is arranged in annular groove up and down, reinforcing ring 6 is by the positioning Slot 9 is positioned.

Claims (4)

1. glass lifting motor commutator, including commutator base and copper segment, by mica between adjacent copper segment Piece is dielectrically separated from, and the top of copper segment is equipped with bonding wire crotch, it is characterised in that：The inside of bonding wire crotch is at the top of hook Position mold the both ends angles R, middle straight line forming surface.

2. glass lifting motor commutator as described in claim 1, it is characterised in that：The commutator base is by secure bond Upper matrix and lower substrate composition, the copper segment makees circumference arrangement in the outer circle of lower substrate, and copper segment passes through it The fixed feet of medial surface is strong bonded with lower substrate.

3. glass lifting motor commutator as claimed in claim 2, it is characterised in that：The combination of the upper matrix and lower substrate End face be equipped with it is corresponding protrusion and it is recessed, and endoporus circumferential position setting lantern ring upper lower substrate is restrained.

4. glass lifting motor commutator as described in claim 1, it is characterised in that：The upper and lower end face of the copper segment Reinforce annular groove equipped with upper and lower, reinforces that reinforcing ring is arranged in annular groove up and down, the medial surface of the mica sheet is equipped with locating slot, reinforcing ring It is positioned by the locating slot.