CN1030853A - The method of attachment of armature winding and commutator segment - Google Patents

Abstract

This commutator segment (34) is equipped with the terminal (36) of an integral body, and this terminal has one one end opening with a part (32) of holding armature winding and be arranged to straddle mounting in use and grip the groove (48) of this winding part to form and to keep electrically contacting between terminal and winding part.This method comprises from least a portion of winding part removes insulating barrier, and then with this winding bare wire part partly, inserts in this groove by terminal and moving relative to each other of winding part.

Description

The method of attachment of armature winding and commutator segment

The present invention relates to a kind of method that armature winding is connected to commutator segment.

The 2nd, 128, in the 818B British patent, the method for attachment between an armature winding and commutator segment has been described, this method of attachment can be cancelled with the method for heating and realizes connection with the insulation deflection method; In the method, the lead with insulated cladding firmly is pressed into one than in the narrower slotted eye in this line footpath, so as with integrant terminal of commutator segment and lead between can form contacting of a kind of metal completely and metal.

Blade is being equipped with on the terminal described in the above-mentioned patent so that when lead is moved into slotted eye, cut off insulating barrier on the lead.

The present invention attempts to provide a kind of noting be used in to be equipped with the method for attachment that blade just can be connected to armature commutator segment on the terminal.

According to the present invention, it provides a kind of method that armature winding is connected to commutator segment, this commutator segment is equipped with the terminal of an integral body, but this terminal has one one end opening with the coupling part that holds armature winding, simultaneously in order to form between terminal and the winding part and to keep electrically contacting and be arranged to so that straddle mounting in use and grip described winding groove partly, and this method may further comprise the steps :-

(a) at least a portion of described winding part is removed insulating barrier, and

(b) be right after step (a), make terminal and winding partly do respect to one another move, so that the bare wire of winding part is partly entered in the groove, this groove is with regard to straddle mounting and grip this bare wire part to form and to keep electrically contacting between terminal and winding part simultaneously.

This armature preferably includes a terminal base of establishing for described terminal.In this case, described winding part just can be positioned in the described terminal base before at step (b), and in carrying out step (b), and this terminal just is inserted into described terminal base so that groove straddle mounting and grip this winding bare wire part partly.

Step (a) just can be carried out after winding partly is located in the terminal base easily.

This armature preferably has several terminal bases, so just can remove the winding partial insulating layer simultaneously in each described terminal base.

Armature according to the preceding method manufacturing also belongs to the present invention.

Now will be by way of example, the present invention is more specifically described with reference to the accompanying drawings, in these accompanying drawings :-

Fig. 1 illustrates the plane graph of the bearing of forming an armature part, and this bearing partly cut open so that the structure of one of them terminal block to be described, is furnished with a lead in the terminal base.

Fig. 2 is the plane graph of commutator segment and the whole embryo spare of terminal;

Fig. 3 is the end view of the commutator segment of Fig. 2, commutator segment shown in the figure and the terminal structure in working order the time;

Fig. 4 is the vertical cross section of the bearing of Fig. 1, the Fig. 1 shown in the figure on being attached to bearing time the, 2 and 3 commutator segment and terminal.

Fig. 1 to 4 illustrates one embodiment of the present of invention, and wherein commutator has five commutator segments.Need five wiring processes of receiving armature winding.

Fig. 1 illustrates a plastic mould pressing bearing 10.This bearing 10 has three parts 12,14 and 16, and its mid portion 14 mainly is a hollow circuit cylinder, and additional structure is housed on its outer surface.The rotating shaft (not shown) of armature passes this bearing 10, and part 16 is the distance pieces that mid portion 14 is separated from armature punching group (not shown) there.

The mid portion 14 of bearing 10 has five terminal bases 18 that separate around the circumference equal intervals of bearing 10.Each terminal base 18 is to be used for realizing connecting between the appropriate section of armature winding and one of them commutator segment.

The part 12 of bearing 10 forms the support of commutator segment.

Terminal base 18 shown in the section part in Fig. 1.Terminal base 18 has 20, one end walls 22 of sidewall and a upper shield 24.End wall 22 and distance piece 16 adjacency, and form an opening 26 that faces commutator support 12 by each wall 20,22 and upper shield 24.Each sidewall is to parallel with the longitudinal axis of bearing 10.

From boss 28 of inner surface center projections of end wall 22, this boss stretches one section and is about half length of sidewall 20 in terminal base 18.This boss 28 parallels with the longitudinal axis of bearing 10 and extends, and only is connected to bearing 10 by end wall 22.Each sidewall of terminal base 18 has a groove 30, and groove 30 extends one section length that is terminated to the free end face place of boss 28 from commutator one end of terminal base 18 with the longitudinal axis of bearing 10 with paralleling.The part 32 of armature winding is passed each groove 30 of one of them terminal base 18, and leans against on the end of boss 28.The outer surface of each sidewall 20 was splayed, so that winding part 32 enters groove 30.

The sub-assembly of commutator segment 34 and terminal 36 has been described in Fig. 2 and Fig. 3.Fig. 2 illustrates the embryo spare of this sub-assembly, the end view of the assembly when Fig. 3 is its composition working state structure.Commutator segment 34 has a basic unit 38, and this basic unit 38 is loaded with the top layer 40 of layer of copper.If bearing 10 must be made by thermosetting plastics, this basic unit 38 can maybe can make terminal have the steel of suitable elastic force to make by resilient brass.Lug 42 with reduction width is provided on the front end of basic unit 38, and lug 42 has a jump ring sheet 44 that is pressed into from central authorities.

The basic unit 38 of commutator segment 34 is connected to terminal 36 in its back-end.Terminal 36 is rectangles, and its minor axis is to overlap with the longitudinal axis of commutator segment 34.This terminal 36 has one for all symmetrical center cutout part 46 of the length axis of terminal 36.The width of center cutout part 46 is reduced to the keyhole part 48 that ends at otch 46 two ends from the Breadth Maximum of terminal center.In the both sides of the minor axis of terminal 36, along on commutator segment 34 edge farthest, respectively being provided with a triangle pawl 50.

As can be seen from Figure 3, the top layer 40 of basic unit 38 and commutator segment 34 is to make the arcuation that conforms to the outer radius of the commutator cradle portion portion 12 of bearing 10.Lug 42 extends below basic unit 38 and along commutator segment 34 backward, and its jump ring sheet 44 projectioies are below lug 42.Terminal 36 is bent up vertically from commutator segment 34, and its two arm 52(it comprise separately keyhole part 48) curved with the middle body of terminal at an angle of 90.Therefore its two arm 52 parallel to each other, simultaneously and the longitudinal axis of commutator segment 34 parallel ground, extend forward along its length.The free end 56 of terminal 36 has curved at two arms 52 and has been curved crustal inclination toward each other when parallel to each other.

The holding arms 52 that is reduced to from the center of notch portion 46 to the size at the top of keyhole part 48 is directed to winding part 32 and goes and a funnel is provided.

The front end of bearing 10 is furnished with five longitudinal flutings 70, and these grooves are cut at front end, so that be consistent with the outside arcuation surface of commutator holder part 12.

Armature is assembled by the following method:

Bearing 10 is placed in the armature rotating shaft, and its distance piece 16 leans against in the basic unit of stack of laminations.With the lead-in wire of armature winding, by an end of lead 32 being distributed into by the method in the slotted eye that sidewall 20 disposed 30 of terminal base 18 insertion end stroma 18 that armature winding gone between.With lead 32 leading-in end stromas 18, till it rests on the boss 28.Just begin around first armature coil from this moment., then, in kind lead 32 is distributed in the next terminal base 18 later on just with angle of armature commentaries on classics around intact first coil, and can not destroys the continuity of lead 32.

Repeat this operation up to all coils all till the coiled, then the tail end of winding is distributed into the groove 30 of terminal base 18, and with it toward pusher, till it and lead top were adjacent, this top was exactly the line end that rests in when winding process begins on the boss 28.Then lead 32 is cut off, and armature is taken off from coil winding machine.Just in case when removing insulating barrier on winding top and the tail end at the same time and having any problem,, close with a termination of winding separately so the commutator segment that matches just can have two terminals then they can be distributed into a both-end stroma.

Bearing 10 has one now by all laying the winding part 32 that insulated conductor (for example enamelled wire) is formed in each terminal base 18.Each winding part 32 all is in tension, and is tightened up the boss 28 that leans against separately.

Then, an instrument (not shown) just removes insulating barrier from two arms 52 that make terminal 36 at least of winding part with the position that winding partly contacts.This instrument preferably can remove insulating barrier from all winding parts simultaneously.Although this instrument will remove insulating barrier by the method for cutting off and be offset its insulating barrier, can consider that other removes the method for insulating barrier, and these methods are included in the scope of the present invention all.

Then this commutator segment is placed on the commutator holder part 12 of bearing 10 and and slides,, and make lug 42 enter separately groove 70 so that make terminal 36 enter separately terminal base 18 along part 12.

Near the winding part 32 that is clamped in the terminal base 18 time, when the middle body 54 of terminal 36 was crossed boss 28, the slotted eye that is made of otch 48 just partly moved past at the bare wire of lead 32 along with terminal 36.Groove is also narrower than diameter of wire, thereby just forms contacting of metal and metal closely between lead 32 and terminal 36.The upper shield 24 of the just tight card terminal base of pawl 50, and therefore just terminal is fixed in the terminal base.Contacting between the middle body 54 of terminal and boss 28 can constitute extra maintenance effect.Two arms 52 of terminal 36 just play cantilever spring and a pressure that continues are applied on the lead 32.When terminal 36 upstream end stromas 18, the lug 42 of commutator segment 34 just enters groove 70, and simultaneously jump ring sheet 44 just is pressed in the material of bearing 10 and goes, so that lug 42 is fixed in the recess 70.Thereby this commutator segment just is pressed against on the part 12 of bearing 10 securely.

Above-described embodiment just provides as an example, but concerning the professional and technical personnel, do not depart from the scope of the present invention lower obviously have various improved. For example: commutator is just a kind of to be similar to the panel type commutator described in the 8th, 629, No. 625 British Patent Application that await the reply; Insulating barrier can just be removed before just winding partly being distributed into terminal base; The openend of groove is the armature punching group dorsad, so that the winding part is introduced into groove during the coiling armature, although in this case, winding operation will all must suspend, and be essential to removing insulating barrier at every turn.

The present invention is special (rather than unique) armature winding of being applicable to fractional horse power motor.

Claims (8)

1, a kind of method of attachment that an electric frame winding is connected to a commutator segment, wherein commutator segment is equipped with the terminal of an integral body, this terminal has one one end opening to hold armature winding part and to be arranged to straddle mounting in use and to grip the notch of described winding part to form and to keep electrically contacting between terminal and winding part, it is characterized in that this method may further comprise the steps:

(a) insulating barrier of at least a portion of described winding part is removed and

(b) be right after step (a), make terminal and winding part respect to one another mobile, so that make the bare wire of this winding part partly enter notch, and the bare wire part that makes this notch straddle mounting and grip this winding part is to form between terminal and winding part and maintenance electrically contacts.

2, as desired method in the claim 1, it is characterized in that: wherein this armature comprises the terminal base that described terminal is used.

3, as desired method in the claim 2, it is characterized in that: wherein said winding part just is located in the described terminal base in step (b) before, and in carrying out step (b), this terminal is inserted described terminal base, make this groove straddle mounting and grip the described bare wire part of described winding part.

4, as desired method in the claim 3, it is characterized in that: wherein step (a) is carried out after this winding partly is located in described terminal base.

5, as desired method in the claim 4, it is characterized in that: the insulating barrier on the wherein said winding is to remove with a kind of cutting tool that is inserted into terminal base.

6, as desired method in claim 4 or 5, it is characterized in that: wherein this armature has several terminal bases, and wherein the winding partial insulating layer in each described terminal base is removed simultaneously.

7, a kind of feature of armature is that each described method in requiring according to aforesaid right is made.

8, a kind of motor is characterised in that it comprises one as desired armature in the claim 7.