JPH01308147A - Constructing method and structure of armature - Google Patents

Abstract

PURPOSE:To facilitate fabrication of an armature by connecting upper and lower coils respectively to the opposite ends of commutator chips arranged in circle then passing the coils through a slot and connecting each other thereafter passing the rotary shaft through a laminated core and filling gaps at each section with insulating material. CONSTITUTION:An upper coil 4 is connected to a riser 2 at one end of the conductor section 1 of commutator chips arranged in circle and temporarily connected one another. A lower coil 5 connected to the end section 11 of the conductor section 1 at the opposite side from the riser is twisted spirally by a predetermined pitch and led out to the riser 2 side. Then the upper and lower coils 4, 5 are inserted into a slot of a laminated core and projected therefrom, thereafter the end sections of the upper and lower coils 4, 5 are connected 9 each other. A shaft 8 is penetrated concentrically through the annular conductor section 1 and held therein, then an electrical insulating material 13 is filled in gaps formed between the conductor section 1, a laminated core 7 and the shaft 8 thereafter the temporary joint of the conductor 1 is removed. By such arrangement, the core or the shaft is not required to be supported when connection is made, resulting in a reliable, easy and quick connecting operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of configuring an armature of a rotating electric device and an armature structure.

[Conventional technology]

Regarding the armature, the technique described in Japanese Patent Publication No. 60-37696 is known.

In the armature according to the above-mentioned known technology, an uninsulated annular commutator conductor is inserted into an armature shaft equipped with an iron core around which a coil is wound, and the tip of the coil pulled out from the iron core, It was connected to the coil connection part of the conductor part.

[Problem to be solved by the invention]

1) In the prior art described in 2, when connecting the coil and the conductor part connection part, the shirt 1 is located inside the conductor part through a space, and a relatively heavy iron core is also located, so the conductor part and the shaft It is extremely difficult to weld while maintaining positional accuracy.

An object of the present invention is to provide a method for configuring an armature that allows connection without an iron core or shaft at the time of connection, and an armature structure suitable for implementing the above method.

[Means to solve the problem]

The above purpose is to connect the annular commutator conductor part that is not yet connected to the insulating member and the coil in advance, and then insert the tip of the coil into the slot of the separately manufactured core and shaft assembly. After inserting the core into place, connect its tip.

Shirt 1～. This is accomplished by impregnating or integrally molding an insulating material while maintaining the position of the conductor.

Further, by curving the lower coil by the front pitch dimension in the gap between the conductor portion and the shaft, the coil end can be omitted.

[Effect]

According to the above method, the conductor portion and the coil are connected before the laminated core and shaft are assembled.

Therefore, during the connection operation, there is no need to support the weight of the iron core or shaft, and the connection operation is not hindered by the iron core or shaft.

Therefore, the connection operation can be performed reliably, easily, and quickly.

Furthermore, since the relative positions of these members are fixed by filling with an electrical insulating material in a subsequent process, high precision can be easily obtained.

〔Example〕

Next, an example of assembling an armature structure according to the present invention using the armature construction method according to the present invention will be described with reference to FIGS. 1 to 4 in sequence.

(See Figure 1) The conductor part 1 is connected to the riser 2 which is the coil connection part. It is formed into a body and is temporarily connected in an annular shape by ribs 3.

The upper coil 4 and riser 2 are connected by any connection method, and the lower coil 5 is connected to the end 11 of the conductor section 1 on the side opposite to the riser, and then the lower coil is pulled out at the inner circumference of the conductor section 1. Part 5a
It is pulled out by turning it in a spiral shape by the front pitch dimension as shown in the figure. FIG. 1 shows only one upper and lower coil among a large number of coils, and in reality, the upper and lower coils are connected in the same number of slots. An insulating plate 6 having substantially the same shape as the end face shape of the iron core 7 (see FIG. 2) is inserted into the tips of the upper and lower coils 4.5 so that the upper and lower coils 4 and 5 can easily fit into the slot 10 of the iron core 7. Iron core 7 slot 1
When the upper and lower coils 4 and 5 are inserted into the coil 0, the insulating plate 6 becomes an insulating member between the end face of the iron core 7 and the end face of the riser 2. Ground insulation is required on the inner surface of the slot 10 by coating with insulating paper or an insulating layer. Upper and lower coils 4 and 5 are attached to this part.
It is desirable that the coating of the insulating layer be slippery because of the insertion of the insulating layer. In this case, insertion can be facilitated by coating the inner surfaces of the inlets 1 to 10 with an insulating material whose coefficient of friction against the upper and lower coils is lower than that of the laminated core.

FIG. 2 is an explanatory diagram of a semi-finished product in the middle of construction, in which the assembly shown in FIG. This figure shows a state in which it is bent by the back pinch dimension and connected at the connection part 9.

FIG. 3 is a partial sectional view of the completed product of this example.

In order to maintain the relative positions of the conductor part 1, the shaft 8, and the iron core 7, an insulating material 13 is filled and solidified, and the ribs 3 are cut and removed, thereby making the conductor part 1 and the riser 2 independent. Spline-shaped grooves 14, which are formed into a circuit as shown in FIG. 4 when developed, are formed on the surface of the shaft 8 in order to improve the adhesion of the shaft 8, the iron core 7, the conductor portion 1, etc.

Figure 5 is a developed view showing the state in which the upper and lower coils 4 and 5 are connected to the riser 2. In this state, the front pitch dimension y
Since the span of f is equally divided between the upper and lower coils 4 and 5, the coil end dimension is α, and the axial length is long.

The dimension yf shown in FIG. 4 is the front pitch, and yb is the back pitch.

According to the configuration method described above, at the stage shown in FIG. Part 5a
), the connection operation is easy (the iron core 7 and shaft 8 do not get in the way, and the weight of these members does not apply).

Furthermore, at the stage shown in FIG. 2, the conductor part] and the shaft 8
and are not fixed to each other.

When these members are held concentrically using a suitable jig and filled and solidified with the insulating material 13 shown in FIG. 3, concentricity can be easily ensured with high precision.

〔Effect of the invention〕

According to the method of the present invention, since the conductor section and the coil 4.degree. 5 can be connected independently, they can be freely connected using any welding method. This can prevent a decrease in heat resistance due to the connection portion.

In addition, the coil i~ on the conductor part side is the conductor part 1 and the shaft 8.
Since it is formed in a twisted shape like the pull-out part 5a in the space between the two parts, the axial length can be shortened. In addition, since two operations, commutator molding and coil face processing, are performed at the same time,
This has the effect of simplifying the work.

Further, the armature according to the structure of the present invention is suitable for construction by applying the above-described method of the invention, and can fully exhibit its effects.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, FIG. 1 is an explanatory diagram of a state in which a coil is connected to an annular conductor part, FIG. 2 is an explanatory diagram of a state in which a coil is inserted into an iron core, and FIG. FIG. 3 is a sectional view of the armature filled with insulating material, and FIG. 4 is a developed view of the coil. FIG. 5 is a developed view of a coil of an embodiment different from the above. 1... Conductor part, 2... Riser, 3... Rib, 4...
・Upper coil, 5...Lower coil, 6...Insulating plate, 9.
・・Connection part, 10・Slot, 11・・End part, 12・・
・Connection part, 13・Insulating material.

Claims (1)

[Claims] 1. (a) The conductor portions of the commutator are arranged in an annular shape and temporarily connected to each other; (b) the upper coil is connected to the riser portion of the commutator conductor portion; (c) (d) Connect the lower coil to the end of the commutator conductor section opposite to the riser section, and (d) spiral the lower coil by the front pitch dimension (yf) within the annularly arranged conductor section. (e) Insert the upper and lower coils into the slots of the laminated core; (f) Connect the upper and lower coils at their protruding ends through the slots to each other. (g) a shaft is held concentrically through the annularly arranged conductor section, and (h) a gap is formed between the conductor section, the laminated iron core, and the shaft. A method of configuring an armature, comprising: filling a space with an electrically insulating material to fix each of the above members to each other; and (i) removing a temporary connecting portion of a commutator. 2. In the step (e) above, when inserting the upper and lower coils into the slots, the inner surface of the slots is coated with an insulating material having a low coefficient of friction. How to construct the armature as described. 3. When inserting the upper and lower coils into the slots of the laminated core in the step (e) above, first insert the upper and lower coils into an insulating plate having the same contour as the end surface of the laminated core. The method of configuring an armature according to claim 1, characterized in that: 4. (a) a commutator conductor section arranged in a ring, (b) an upper coil connected to the riser section of the above conductor section, and (c) a lower coil connected to the opposite end of the above conductor section. (d) a laminated core having slots into which the upper and lower coils are inserted; (e) a laminated core that is fixed through and through the laminated core and arranged concentrically with the annularly arranged conductor portion; An armature structure comprising: a shaft; and (f) an electrically insulating member filling a gap between the laminated core, the conductor, and the shaft.