DE102008041064A1 - Commutator motor in DC version and anti-lock braking device - Google Patents

Abstract

The present invention relates to a commutator motor in a DC version for a drive device, in particular in a motor vehicle, provided with a stator having a plurality of stator poles, with an armature rotor having a plurality of armature teeth, which are arranged on the circumference of the armature rotor with intermediate rotor grooves, in each case a single tooth winding is provided on an armature tooth, with a commutator, wherein in each case one end of a single tooth winding is connected in each case with a blade of the commutator, wherein in each case a number of fins are interconnected by bridges, and wherein the number of fins a multiple of the stator poles and is a multiple of the number of pole pairs of the stator poles. The present invention further relates to an anti-lock brake device.

Description

The The present invention relates to a DC-motor commutator motor for a drive device. The present invention further relates to an anti-lock brake device.

Such Commutator motors are well known and used in drive equipment of motor vehicles, such as in adjusting drives and the like, used. Among other things, this is an accurate recognition of Engine speed required.

1 shows a schematic plan view of such a known commutator motor. In a stator 1 are stator poles 2 . 3 , here as permanent magnets with north and south poles N, S, around an armature rotor 4 arranged around. The anchor rotor 4 is on an armature shaft 7 rotatably applied and has a plurality of anchor teeth 5 , passing each other through runners grooves 9 are spaced. To the anchor teeth 5 around and in the runners grooves 9 are distributed windings 8th provided, whose ends with slats L of a commutator 6 are connected. For energizing the commutator 6 are two or more brushes 10 intended.

For the application A speed detection is the highest possible resolution means a plurality of, for example, twenty-four fins of the commutator required. The raised Requirements of the conditions of use in a motor vehicle in particular in terms of one possible low construction volume, low weight, small number of individual parts and at the same time high efficiency result in the ever-present Demand to provide an improved commutator motor.

In front It is therefore the object of the present invention to provide this background to provide an improved commutator motor.

According to the invention this Task by a commutator with the features of the claim 1 and / or solved by an anti-lock brake device.

Accordingly, a Commutator motor in DC version for a drive device, in particular in a motor vehicle, provided with a stator, which several Having stator poles, with an armature rotor having a plurality of armature teeth, the at the periphery of the anchor rotor with intermediate runners grooves are arranged, wherein in each case on an anchor tooth a single tooth winding is provided with a commutator, each one end of a Single tooth winding each connected to a blade of the commutator is, in each case a number of slats by bridges with each other are connected, and wherein the number of slats a multiple the stator poles and a multiple of the number of poles of the stator poles is.

By Such a commutator motor with single-tooth windings, it is now possible, at the same time high number of commutator bars the weight (especially the one needed here Copper material) and the space (especially for the winding head) over known solutions while significantly reducing the required performance and speed maintained.

advantageous Refinements and developments of the invention will become apparent the dependent claims as well as from the description in conjunction with the figures of Drawing.

In In a preferred embodiment, the number of anchor teeth is greater than the number of stator poles. In a FITS preferred embodiment the commutator motor has six stator poles and eight armature teeth. The number of slats is preferably 24. This comparatively high number of lamellae preferably has the effect of having a very high resolution for accurate speed detection is feasible.

through bridges are in a preferred embodiment each connected three slats. At the same time, the commutator motor in a further preferred embodiment just two brushes on, whereby the total number of required items kept low becomes. The commutator motor can also have more than two brushes.

One Another advantage is that the single-tooth windings and the bridges are formed from a continuous winding wire. That's it with a corresponding, optimized winding scheme possible, the Reduce production times, in particular using a mechanical winding method and a corresponding winding machine.

By the single-tooth windings is compared to known solutions on the one hand a saving of the needed Copper material and on the other hand, a reduction in the length of the entire engine reached.

In a further embodiment, it is provided that at least two of the single-tooth windings have a winding sense opposite to the other single-tooth windings and thus a different winding direction. As a result, the production with only one wire, which is essential for mechanical production, is not adversely affected. Rather, even the efficiency of the Motors improve.

The Stator poles of the commutator motor are preferably permanent magnets, but other techniques are used for exciter po le can, such as corresponding coils.

Of the described commutator motor is preferred for the drive means a Automobile anti-lock braking device suitable. Conceivable, however, are other applications in others Drive devices.

The above embodiments and refinements of the invention leave to combine with each other in any way.

The The present invention is described below with reference to the schematic Figures of the drawings specified embodiments explained in more detail. It show:

1 a schematic plan view of a known commutator motor;

2 a schematic plan view of a commutator motor according to the invention to illustrate a preferred embodiment;

3 a preferred winding scheme of the commutator motor according to the invention 2 ;

4 the winding scheme 3 in an embodiment shown for a machine winding method.

In The figures of the drawing are identical and functionally identical elements and characteristics - if nothing else done is with provided the same reference numerals.

The basic structure of a known commutator motor has already been discussed above in connection with 1 described and therefore will not be explained here.

2 shows a schematic plan view of a commutator motor for illustrating a preferred embodiment of the invention. This commutator can z. B. in DC version particularly suitable for use in an anti-lock braking device of a motor vehicle, in which an exact speed detection is required, for example, an idle speed of the commutator 4500 min ^-1 .

In this preferred embodiment, the commutator motor has a stator 1 with six poles 2 . 3 , preferably permanent magnets N, S, on. The anchor rotor 4 has eight anchor teeth 5 each with a single tooth winding 8th' , The commutator 6 has twenty-four louvers L1 ... L24.

Here, the number (twenty-four) of the fins L is a multiple of the pole pair number (three) of the stator poles 2 . 3 and also a multiple of the number of stator poles 2 . 3 (six). Also, the number twenty-four is a multiple of the anchor teeth 5 (eight).

The anchor teeth 5 are each with z1 ... z8 and the associated single tooth windings 8th' each designated w1 ... w8.

3 shows the connection of the ends of the single tooth coils 8th' with the slats L in a winding scheme. In 3 are stators 1 with the stator poles 2 . 3 and the slats L shown in unwound representation. Here, the individual slats are designated L1 ... L24. The two brushes 10 are shown here schematically.

The first end of the winding w1 is connected to the fin L1, and the second end of the winding w1 is connected to the fin L2. At the lamella 2 the first end of the winding w4 is connected, the second end of which lies with the second end of winding w3 on lamination L3. The first end of winding w3 is connected to the first end of winding w2 at lamination L4. The other end of winding w2 is connected to lamination L5 together with the first end of winding w5, with the second end of winding w5 and the first end of winding w8 at lamination L6. The second end of winding w8 is connected to the second end of winding w7 at lamination L7. The first end of winding w8 and the first end of winding w6 are connected together with lamination L8. Finally, the second end of winding w6 is connected to lamination L9.

The Windings w3 and w7 have an opposite winding sense to the rest Windings w1 ... w2, w4 ... w6 and w8.

In the in 3 In the example shown, there are three slats each over respective bridges 11 connected with each other. These are in each case the following lamella groups containing in each case three lamellae:
L1-L9-L17;
L2-L10-L18;
L3-L11-L19;
L4-L12-L20;
L5-L13-L21;
L6-L14-L22;
L7-L15-L23;
L8-L16-L24.

The winding scheme 3 is in 4 in an embodiment for a machine winding illustrated. Here are the anchor teeth 5 with their designations z1 ... z8 and the single-tooth windings 8th' shown together with their names w1 ... w8.

A winding wire 12 starts, for example, at lamella 1 of the commutator 6 , Is then wound as a single tooth winding w1 to anchor tooth z1, further connected to blade L10, in which case the winding wire 12 first as a bridge 11 led by lamination L10 to the lamination L18 and then continue as a bridge 11 from lamella L18 to lamella L2. From there, the lead of the winding wire goes 12 in a corresponding manner continue to form the winding w4 of the armature tooth z4 and again to the blade L11 for further bridging after blade L19 and blade L3. The further guidance and laying of the winding wire 12 runs after the in 3 shown connection diagram and should not be further explained, as they are by the above, 3 and 4 is apparent.

Although the present invention above based on a preferred embodiment explained was, if it is not limited to that, but lets itself modify in any way, without departing from the subject of deviate from the present invention.

Especially would be too conceivable, if z. B. each other slats than those shown on corresponding bridges connected to each other.

Even the use of only two brushes is advantageous, but not necessary. Rather, a larger number of brushes, for example 3 . 4 or even more, to be used.

Also the application of the commutator motor according to the invention for one Drive device in a motor vehicle and here in particular for an anti-lock braking system a motor vehicle is to be understood merely as an example. The Invention leaves rather advantageous in any electrical drives deploy.

1

stator

2, 3

stator

4

anchor runner

5

anchor tooth

6

commutator

7

armature shaft

8th

winding

8th'

Single tooth winding

9

rotor slot

10

brush

11

bridges

12

winding wire

L

lamella

N

North Pole

S

South Pole

w1 ... 8

winding

z 1 ... 8

tooth

Claims (10)

Commutator motor in DC version for a drive device, in particular in a motor vehicle, with a stator ( 1 ), which has several stator poles ( 2 . 3 ), with an anchor rotor ( 4 ), which has several anchor teeth ( 5 ), which at the periphery of the armature rotor ( 4 ) with intermediate rotor grooves ( 9 ) are arranged, wherein on an anchor tooth ( 5 ) each a single tooth winding ( 8th' ) is provided with a commutator ( 6 ), - in each case one end of a single tooth winding ( 8th' ) each with a lamella (L) of the commutator ( 6 ), - wherein in each case a number of lamellae (L) by bridges ( 11 ) are interconnected, and - wherein the number of lamellae (L) is a multiple of the stator poles ( 2 . 3 ) and a multiple of the number of poles of the stator poles ( 2 . 3 ) is. Commutator motor according to claim 1, characterized in that the number of armature teeth ( 5 ) greater than a number of stator poles ( 2 . 3 ). Commutator motor according to claim 2, characterized in that the commutator motor has six stator poles ( 2 . 3 ) and eight anchor teeth ( 5 ) having. Commutator motor according to claim 3, characterized in that the commutator motor has twenty-four fins (L). Commutator motor according to claim 4, characterized in that in each case three lamellae (L) by a bridge ( 11 ) are interconnected. Commutator motor according to one of the preceding claims, characterized in that the commutator motor at least two and preferably exactly two brushes ( 10 ) having. Commutator motor according to one of the preceding claims, characterized in that the single-tooth windings ( 8th' ) and the bridges ( 11 ) from a continuous winding wire ( 12 ) are formed. Commutator motor according to one of the preceding claims, characterized in that at least two of the single-tooth windings ( 8th' ) one to the other single-tooth coils ( 8th' ) have opposite winding sense. Commutator motor according to one of the preceding claims, characterized in that the stator poles ( 2 . 3 ) Are permanent magnets. Anti-lock braking device of a motor vehicle, which is a commutator motor according to one of claims 1 to 9 has.