DE102005055641A1 - Laminated stator core assembly for small motor, has several I-shaped single magnetic poles, where connecting sides of poles have S-shaped cross section, and poles have recess and projections - Google Patents

Abstract

The assembly has several I-shaped single magnetic poles (1), where the connecting sides of the poles have a S-shaped cross section. The poles have projections (11) and recesses (12), which are arranged corresponding to the connecting sides. The centre point of the ring of the recess lies at the line of the end surface. Semi circular grooves (13) are provided at the rear side of the poles, where the grooves run parallel to one another. An insulating unit is filled within the grooves.

Description

The The invention relates to a structure of a stator core, in particular a structure of a stator core, a slight wire winding, easy assembly and a significant cost reduction allowed.

conventional Stator cores are mostly one piece manufactured. In this case, the wire winding of the integrally formed requires Stator core However, a special winding machine, which can lead to an increase in costs.

Out TW 090103126 a construction of an iron core is known in which a linear arrangement and an uninterrupted connection are used. Although this is well suited for use with stator laminations of small engines. But the wire winding also requires a special winding machine. With a normal winding machine, however, a satisfied wire winding does not materialize.

Out TW 091105827 Another structure of an iron core is known, which is composed of a plurality of stacked metal sheets. This manufacturing process is very complicated and precise positioning is difficult to achieve, especially for ordinary manufacturers. Therefore, this conventional structure as a whole has no high economic benefit. Moreover, it is difficult to exploit from industry.

Of the Invention is based on the object, the above-mentioned shortcomings eliminate and create a structure of a stator core, which has a simple wire winding and assembly as well as for the production in a small number, but of different types is suitable.

These The object is achieved by a structure of a stator core, having the features specified in claim 1. Further advantageous Further developments of the invention will become apparent from the dependent claims.

in the Following are objects, features and operation of the invention based on the preferred embodiments and the accompanying drawings explained in more detail. It demonstrate:

1 a perspective drawing of a first embodiment of a single magnetic pole according to the invention;

2 a plan view of the first embodiment of a single magnetic pole according to the invention;

3 a perspective drawing of the first embodiment of a single magnetic pole according to the invention, which is wound with copper wire;

4 in a schematic perspective view of two individual magnetic poles according to the invention in a connected state;

5 the procedure for adjusting the angle of the S-shaped connecting sides of two individual magnetic poles according to the invention in a schematic representation;

6 a schematic representation of the embodiment of a single magnetic pole according to the invention, wherein the circle centers of the S-shaped connecting sides and the circle center of the circular stator form an isosceles triangle;

7 a schematic representation of the individual magnetic poles according to the invention, which are joined together to form a circular stator;

8th an exploded perspective view of a second embodiment of a single magnetic pole according to the invention with a corresponding insulating element;

9 in schematic perspective view according to the invention three individual magnetic poles according to 8th in connected condition;

10 a schematic representation of the inventive single magnetic poles according to 8th which are in series connection, have undergone a wire winding and are then rolled into a circular stand;

11 a schematic representation of a circular stator, from the single magnetic poles according to 8th is composed; and

12 a perspective drawing of the second embodiment of a single magnetic pole according to the invention, wherein the ends of the copper wire are secured in fastening grooves of the insulating.

How out 1 and 2 can be seen, an inventive structure of a stator core has a plurality of I-shaped single magnetic poles 1 on, whose two connecting sides each have a substantially S-shaped cross-section and a projection 11 and a recess 12 consists. The projections 11 and recesses 12 on the two connection sides of the I-shaped single magnetic pole 1 are arranged diagonally such that all two individual magnetic poles 1 one fast and easy to connect.

In 3 is shown a copper wire 2 on a belly portion of the I-shaped single magnetic pole 1 wound so that each I-shaped single magnetic pole 1 forms with a certain number of turns.

The following will be on 1 to 4 Referenced. Be the individual magnetic poles 1 with the copper wire 2 Finished, the I-shaped single magnetic poles can 1 under connection of the correspondingly shaped projections 11 and recesses 12 be connected to each other. That is, the connection of the single magnetic poles 1 done by placing the at one end of a single magnetic pole 1 arranged projection 11 into the corresponding end of another single magnetic pole 1 trained recess 12 engages as in 4 is shown. With a number of I-shaped single magnetic poles 1 can be a motor stator main body certain curvature form.

It should be noted that a circle center a of the projection 11 , a circle center b of the recess 12 of the single magnetic pole 1 and a motor stator center c forms an isosceles triangle [see 6 ], if the single magnetic poles 1 connected to each other. This results in a flexible angle adjustment [see 5 ], no matter how many single magnetic poles 1 connected to each other. A uniform division is made as needed, starting from the center of the motor stator to the individual magnetic poles 1 to merge into a geometric circle. In this case, the two circle centers of the projection 11 and the recess 12 lie in a same radial line. The assembly of a circular stand comes about when the three circle centers form an isosceles triangle, as in 7 is shown. In this way, a motor stator main body of certain curvature can be formed.

According to the invention, there are still many slightly modified embodiments. In the 8th to 12 another embodiment of the present invention is shown. In the embodiment according to 8th is an I-shaped single magnetic pole 1 adapted insulating element 3 provided, from the lower end, two axially parallel to each other, perpendicular to the main body of the insulating 3 standing, semi-circular cylinders 31 each of which extends into a correspondingly shaped, at the back of the single magnetic pole 1 trained parallel groove 13 insertable and thus can be combined to form a structural unit [see 9 ].

When merging into a round configuration, as in 10 shown are those with the insulating elements 3 combined single magnetic poles 1 initially connected together so that they are arranged linearly to allow a simple wire winding. After the copper wire 2 on the single magnetic poles 1 is wound, the assembly of the circular stand can be done as in 11 is shown.

It should also be noted that each have a mounting groove 32 on both sides of the surface of the main body of the insulating 3 is formed and that serves the end of the copper wire 2 after the wire winding on the single magnetic pole 1 in the mounting groove 32 is held [see 12 ].

• 1. Der erfindungsgemäße Aufbau ist einfach, kompakt und integral ausgebildet, was eine erhebliche Herabsetzung von Herstellungskosten bewirkt.
• 2. Die Einzel-Magnetpole 1 lassen sich unter Winkeleinstellung einfach miteinander verbinden, wodurch ein einfaches Zusammenfügen der Einzel-Magnetpole 1 zu einem kreisförmigen Ständer möglich ist.
• 3. Durch einfache Drahtwicklung kann ein erhöhter Füllungsgrad leicht erzielt werden. Dazu werden keine speziellen Anlagen benötigt, was für eine erhebliche Kostensenkung sorgt.
• 4. Zum Herstellen eines Ständers unter Verwendung der Isolierelemente 3 kann eine Wickelmaschine eingesetzt werden, mit der eine schnelle Drahtwicklung gewährleistet wird. Hierdurch ergibt sich eine beträchtliche Erhöhung der Arbeitseffizienz.

In summary, for example, the following advantages can be realized with the structure according to the invention:

• 1. The structure of the invention is simple, compact and integrally formed, which causes a significant reduction in manufacturing costs.
• 2. The single magnetic poles 1 can be easily connected with each other under angle adjustment, whereby a simple assembly of the individual magnetic poles 1 to a circular stand is possible.
• 3. By simple wire winding, an increased degree of filling can be easily achieved. No special equipment is required for this, resulting in a significant cost reduction.
• 4. To make a stand using the insulating elements 3 a winding machine can be used, with which a fast wire winding is guaranteed. This results in a considerable increase in the work efficiency.

1

Single magnetic pole

11

head Start

12

recess

13

parallel groove

2

copper wire

3

insulating

31

semicircular cylinder

32

mounting groove

c

Engine Stand-center

a

Circle center of the projection

b

Circle center b of the recess

Claims (6)

Structure of a stator core comprising a plurality of I-shaped single magnetic poles ( 1 ), whose two connecting sides each have a substantially S-shaped cross-section, what a simple and fast assembly of the single magnetic poles ( 1 ) provides a circular stator core. Structure according to claim 1, characterized in that each of the individual magnetic poles ( 1 ) has two connecting sides, each having a substantially S-shaped cross-section and a projection ( 11 ) and a recess ( 12 ), the projections ( 11 ) and recesses ( 12 ) on the two connecting sides of the single magnetic pole ( 1 ) are arranged accordingly. Structure according to claim 1, characterized in that the circle center (a) of the projection ( 11 ) and the circle center (b) of the recess ( 12 ) of the connecting sides of the single magnetic pole ( 1 ) lie on a line of a same end face. Structure according to claim 1, characterized in that the single magnetic pole ( 1 ) at its rear side with two semicircular, parallel parallel grooves ( 13 ) into which an insulating element ( 3 ) or resin is fillable, which causes a reinforcement of the construction. Structure according to claim 4, characterized in that the insulating element ( 3 ) is designed as a plug-in part, which in the form of the I-shaped single magnetic pole ( 1 ) and from the lower end thereof two axially mutually parallel, at right angles to the main body of the insulating ( 3 ), semi-circular cylinders ( 31 ), each of which in a correspondingly shaped, at the back of the single magnetic pole ( 1 ) formed parallel groove ( 13 ) and thereby can be combined to form a structural unit. Structure according to claim 4 or 5, characterized in that in each case a fastening groove ( 32 ) on both sides of the surface of the main body of the insulating ( 3 ) and serves to ensure that the end of the copper wire ( 2 ) after the wire winding on the single magnetic pole ( 1 ) in the fastening groove ( 32 ) is held.