GB2312333A

GB2312333A - Commutator with multi-stage terminal rings

Info

Publication number: GB2312333A
Application number: GB9607833A
Authority: GB
Inventors: Tai Her Yang
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-16
Filing date: 1996-04-16
Publication date: 1997-10-22
Also published as: GB9607833D0

Abstract

The terminal section of the commutator has two or more stages 102 associated with each segment to receive the armature windings. The diameter of slot 103 may be smaller than that of the working surface section and the dimensions of each ring of wire receiving stages may be different.

Description

THE ELECTRICAL MACHINE CCMMUTATOR WITH MULTI-STAGE TERMINAL COLUMNS SUMMARY OF THE INVENTION The conventional electrical machine commutator is usually provided with a staged terminal column at one of its ends for lap-joining with the armature winding, wherein for the case that the copper usage of armature winding is more and its matching commutator is a conventional electrical machine single stage terminal column, then a larger stage difference is required, thus to increase the overall commutator manufacturing cost, wherein for the case that the individual commutator strip is widened, then the outer diameter of the assembled commutator is increased, the cost is also increased and so does the addition of dissipation loss; thereof the electrical machine commutator with multi-stage terminal columns is characterized to have two or more than two rows of the assembled staged and mutually insulated terminal columns, thereby the lap-joining points between the armature winding and the commutator can be dispersed, whereby the increase of commutator cost is less and the dissipation loss is not increased.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an embodying example of the invention illustrating the application of a rotational electrical machine commutator with two staged terminal columns.

Figure 2 is a side view schematic diagram of figure 1 Figure 3 is an embodying example of the invention illustrating the application on a linear type commutator electrical machine.

DETAILED DESCRIPTION OF THE INVENTION As is well-known, the commutator is used in the brush type electrical machine to provide current conduction and switching function, whereof it is the most important component of the brush type electrical machine, and all perfect matches are required in the material, diameter, number of the commutator strips, number of the armature slots as well as the number of coupling brushes, whereof the conventional commutator is usually multi-ring shape assembled and is mutually insulated to each other, one of its ends has an assembled and mutually insulated staged terminal column structure for lap-joining with the armature winding, wherein the ratio of the iron and copper usage for the armature is usually selected based on the output characteristics during the armature design, when the copper usage is more, the effective lap-joining area between the armature winding and the commutator has to be increased, and correspondingly the staged type structure of the commutator has to be increased also, thereby the manufacturing cost and the difficulty of the lap-joining work are correspondingly increased, wherein the enlargement of the commutator diameter also cause the cost and dissipation loss to increase; thereof the electrical machine commutator with multi-stage terminal columns discloses a particular commutator structure, whereof it has two or more than two rows of the assembled staged and mutually insulated terminal columns structure, thereby to reduce the cost increase and to avoid the increase of dissipation loss.

Figure 1 is an embodying example of the invention illustrating the application of a rotational electrical machine commutator with two staged terminal columns, and figure 2 is a side view schematic diagram of figure 1, wherein it is mainly comprised of the following: A commutator structure which is comprised of at least two or more than two mutually insulated and ring installed commutator strips 101, whereof one or both its ends are installed with at least two or more than two rings of the commutator strips assembled, staged and mutually insulated terminal columns 102, and a ring slot 103 in smaller diameter is installed between the two terminal columns 102; The above said two or more than two rings of the commutator strips assembled, staged and mutually insulated terminal columns 102, wherein the columns can be provided with equal diameter or unequal diameter, and equal width or unequal width; Each commutator strips assembled terminal column 102 is further provided with an indent 104 or drilled hole 105 (as shown by dashed lines in figure l)for welding, riveting, or smelting the termination of the armature winding; Between the afore said two or more than two rings of the commutator strips 101 assembled, staged and mutually insulated terminal columns 102, the diameter of the ring slot 103 and the diameter of the current switch working surface of the commutator can be the same or different, especially that the diameter of the ring slot 103 can be smaller than the diameter of the current switch working surface of the commutator; The afore said electrical machine commutator with multi stage terminal columns, wherein its multi-stage terminal columns 102 are especially that the diameter of the terminal column is increased in the direction from the outer end toward the inner end and so is the diameter of the ring slot 103 between the terminal columns.

Figure 3 is an embodying example of the invention illustrating the application on a linear type commutator electrical machine.

As summarized from the above descriptions, when designing the matching armature for the electrical machine commutator with multi-stage terminal columns, the ratio of the iron and copper usage for the armature is usually selected based on the output characteristics, wherein if the copper usage is more, the effective lap-joining area between the armature winding and the commutator has to be increased, and correspondingly the staged type structure of the commutator has to be increased also, thereby the manufacturing cost and the difficulty of the lap-joining work are correspondingly increased, wherein the enlargement of the commutator diameter also cause the cost and dissipation loss to increase; thereof the electrical machine commutator with multi-stage terminal columns discloses a particular commutator structure, whereof it has two or more than two rows of the assembled staged and mutually insulated terminal columns structure, thereby to reduce the cost increase and to avoid the increase of dissipation loss; thereof the idea is innovative and is practical, and the applicant has searched the electromechanical documents and fund no similar claims of prior arts, therefore your approval of this application by law is greatly appreciated.

Claims

1. An electrical machine commutator with multi-stage terminal columns, wherein it is characterized to have two or more than two rows of the assembled staged and mutually insulated terminal columns, thereby the lap joining points between the armature winding and the commutator can be dispersed, whereby the increase of commutator cost is less and the dissipation loss is not increased, wherein it is mainly comprised of the following: A commutator structure which is comprised of at least two or more than two mutually insulated and ring installed commutator strips, whereof one or both its ends are installed with at least two or more than two rings of the commutator strips assembled, staged and mutually insulated terminal columns, and a ring slot in smaller diameter is installed between the two terminal columns.

2. The electrical machine commutator with multi-stage terminal columns as in claim 1, wherein it is further characterized in that the two or more than two rings of the commutator strips assembled, staged and mutually insulated terminal columns can be provided with equal diameter or unequal diameter, and equal width or unequal width.

3. The electrical machine commutator with multi-stage terminal columns as in claim 1, wherein iy is further characterized in that each commutator strips assembled terminal column can be provided with an indent or drilled hole for welding, riveting, or smelting the termination of the armature winding.

4. The electrical machine commutator with multi-stage terminal columns as in claim 1, wherein it is further characterized in that between the afore said two or more than two rings of the commutator strips assembled, staged and mutually insulated terminal columns, the diameter of the ring slot and the diameter of the current switch working surface of the commutator can be the same or different, especially that the diameter of the ring slot can be smaller than the diameter of the current switch working surface of the commutator.

5. The electrical machine commutator with multi-stage terminal columns as in claim 1, wherein it is further characterized in that the afore said electrical machine commutator with multi-stage terminal columns, wherein for its multi-stage terminal columns, they are especially that the diameter of the terminal column is increased in the direction from the outer end toward the inner end and so is the diameter of the ring slot between the terminal columns.