JPS59169351A - Condenser mounting structure to rotor of motor - Google Patents

Abstract

PURPOSE:To effectively hold a condenser in a rotor for containing a condenser for eliminating noise in each slot formed between adjacent coils in a circumferential direction by compressing the coils along the axial directon of a rotational shaft. CONSTITUTION:A core 2 is rotated integrally with a rotational shaft 1, and a frame 7 is radially projected. A coil 3 is wound on the frame 7, and a slot 4 for containing a condenser 5 for eliminating noise is formed between the coils 3. The condenser 5 is formed in a cylindrical shape, and projected at one bottom with two terminals 12. A commutator base 13 is press-fitted to the shaft 1, and a commutator 10 is fixed. The terminal 12 are electrically connected to the cummutator 10, and the other terminal 12 is electrically connected to the supporting ring 14 which is mounted on the outer periphery of the core 2. The condenser 5 is held by a pair of holding pieces 15 which are projected from a ring 14, a compressing force F is applied along the axial direction of the shaft to the coil 3 in the state that the condenser 5 is contained in the slot 4, and deformed thereby effectively holding the condenser.

Description

[Detailed Description of the Invention] [Technical Field] The present invention provides (b) a plurality of iron cores extending radially from a rotating shaft, and each iron core is wound with a coil, so that a coil is wound between the adjacent coils in the circumferential direction. The present invention relates to a structure for attaching noise canceling noise cancelers to a Tanabata rotor, in which noise canceling noise cancelers are housed in respective slots formed in the rotor.

[Background technology]

Conventionally, in this type of mounting structure, there are 4 holes in the circumferential direction.
9. Since adhesive was used to secure the condenser in the mating slot, the workability was poor, and the position of the condenser within the slot was not fixed, so the center of gravity of the rotor sometimes did not align with the axis of rotation. On the other hand, as disclosed in Japanese Utility Model Application Publication No. 56-169784, which was previously devised by the inventors of the present application, a support link (14) K attached to the outer periphery of the rotor (4) in advance] ), and then the koshijishisa (5) is housed in the slot (4).The support link (i4) has a pair of holding pieces t15) corresponding to each of the koshijishishisa (6). Because it is formed by
By abutting the Koshide and Nsa (5) against the holding piece (15), the n is positioned at the Conden +j (5), which improves work efficiency and also allows the center of gravity of the low and elongated (to) to be on the rotation axis tll. It will match. However, as shown in Figure 1, the dimensions of the slot (4) and the capacitor (5) do not necessarily match, so there is a gap between the capacitor (5) and the coil (3). ) may occur, in which case the condenser +j (5) will wobble and the center of gravity will become unstable, noise may occur due to the vibration of the capacitor (5), and the rotation from 0 to [Object of the Invention] The present invention has been made in view of the above-mentioned problems.
Its primary purpose is to securely hold the capacitor within the slot to prevent it from wobbling within the slot.

[Disclosure of the invention]

In the present invention, when the capacitor is housed in the slot, the coil is compressed in the axial direction of the rotating shaft and deformed to expand along the circumferential direction,
Accordingly, a structure is disclosed in which the valley capacitor is pressed against the coils on both circumferential sides of each slot and the capacitor is held within the slot.

Embodiments of the invention will be described below based on the drawings. Basically, the capacitor mounting structure on the Tanabata rotor according to the present invention is such that the frame (7) of the iron core (2) extends radially from the rotating shaft (1), and each valley frame (7) has a Coils (3) that are fully wound and adjacent to each other in the circumferential direction
A noise canceling capacitor (5) is housed in each of the slots (4) formed between them, and each coil (3) is compressed in the axial direction of the rotation axis t1+, so that it is compressed in the circumferential direction. Transform as if bathing and spreading]', /jishisa (6)
In the first embodiment, the sider (5) is held in the slot (4) by press-contacting the coil (3) on both sides of each slot (4) in the circumferential direction. In this case, as shown in FIGS. 2 to 5, an example is shown in which the mount (5) is supported and fixed to the mount (9).

The rotor (5) has a rotating shaft (1), an iron core (2) with a plurality of frames (7) extending radially from the rotating shaft +1+, a coil (3) wound around the valley frame (7), and a coil (
3) commutator tlOf, 0-tl(4) electrically connected to
) consists of a capacitor (6) to eliminate noise generated in the commutator (lO) when the motor rotates. Since the iron core (2) is fixed to the rotating shaft +11 and rotates together with the rotating shaft ft', the frame (7) protrudes radially from positions divided into five equal parts in the circumferential direction. formed into a shape. Each frame (7) has a mushroom-shaped outer collar (II) extending from its tip end to both sides in the circumferential direction, and a coil 13) is wound around each frame (7). There is a condenser (5) between the coils (3) that are adjacent to each other in the circumferential direction.
) is formed in which a slot (4) is formed. Condesi+j
(5) has a cylindrical shape and has two terminals (12) protruding from one bottom surface thereof. Rotation axis +1+
The commutator base a t131 is press-fitted into the tcXM commutator base (
13) has a commutator (l) according to the number of poles of the coil (3).
O) has both legs awned. One terminal (1) of the capacitor (5)
2) is electrically connected to the commutator (mu0).] The other terminal (12) of the capacitor 5) is electrically connected to the support link (14) attached to the outer periphery of the iron core (2). has been done.

The support link 04) has a pair of holding pieces (
15) protrudes, and the holding piece (15) once protrudes toward the center of the supporting rib j (+4) and then rotates to form an abbreviated shape bent in the axial direction of 1iIIIitl. The formation ceremony will be held. ] The capacitor 5) has two terminals on its circumferential surface in contact with a pair of corresponding holding pieces (+5), and one terminal is soldered to the support link υ4).

Therefore, as shown in FIGS. 2 and 5, the capacitor (5) is fixedly attached to the support link (14) while being positioned at a fixed position on the support plate (+4). The capacitor (5) fixed to the support link (14) in this way
) is inserted into the slot 4) to support it 4)
is colored and fitted around the outer periphery of the iron core (2). When the capacitor (5) is housed in the slot (4), the coil (3) has a rotation axis tl as shown in FIG.
) is applied along the axial direction. Accordingly, the coil (3) is 1. as shown in FIG. g1 rotation axis (
1) is deformed so as to expand in the circumferential direction to form a slot (4).
The capacitor (5) is sandwiched from both circumferential sides of the capacitor (6) and pressed against the outer periphery of the capacitor (6). However, the capacitor (5
) must be supported at at least four points within the slot (4), thereby preventing the capacitor 5) from wobbling. Also, like this, the coil (
By compressing 3) in the axial direction, the axial dimension of the tile (3) is shortened, and the O-tahan can be made thinner.

What is shown in FIG. 6 is a second embodiment, in which the distance in the circumferential direction between the tips of outer flanges (11) of adjacent iron cores (2),
That is, the opening width of the slot 4) is set smaller than the diameter of the capacitor (6). Therefore, if the coil (3) is cleaned and pressed in the axial direction with the capacitor (5) housed in the slot 4), the coil (3) will deform in the same way as in the first embodiment and the coil ( 3), the Koshiden +j (5) is pressed toward the opening of the slot (4), and the polishing process causes both outer flanges (n) located on both circumferential sides of the rotating shaft +11 and the slot 4 at the opening of the slot (4). This means that Koshiden+j (6) can be fully supported at at least four locations including ]・Ile (3) on both sides surrounding ). In this case, the commutator (1) of the capacitor (5)
0), compress the coil (3) and connect it to the capacitor (5).
) is fixed in the slot 4).

〔Effect of the invention〕

As described above, the present invention has two noise-cancelling capacitors housed in the valley slots formed between circumferentially adjacent coils in the rotor. By being compressed, each capacitor is deformed rather than spread out in the circumferential direction, and each capacitor is pressed against the coils on both sides of each slot in the circumferential direction.The side capacitors can be held in the slots, so that the coils are in close contact with the capacitors. The system is designed to ensure that both legs can be turned without shaking, and the coil is compressed in the axial direction of the rotating shaft, so
The axial thickness of the rotor can be reduced and a thin Tanabata can be provided.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a conventional example, and FIG. 2 is a plan view showing a conventional example.
- A plan view of the state in which the support plate is attached to the support plate, Fig. 3 is an x-X line Ffr plane view in Fig. 2, and Fig. 4 is a plate showing the first embodiment of the present invention. A sectional view, FIG. 5 is a plan view of the same as above, and FIG. 6 is a plan view showing a second embodiment of the present invention. 11i is the rotating shaft, (2) is the iron core, (3) is the coil, (4
) is the slot, (6) is the capacitor, (7) is the frame, and (a) is the rotor. Agent Patent Attorney Ishi 1) Ai Figure 7 Figure 1 Figure 2 Figure 3 Figure 154

Claims (1)

[Claims] (1) A plurality of iron cores extend radially from the rotating shaft, and a coil is wound around each iron core, and a noise canceling coil 7 is placed in the valley slot formed between the 49 coils that fit in the circumferential direction. ! 'The blades are housed individually, and each coil is compressed along the axial direction of the rotating shaft, deforming so as to expand in the circumferential direction, and each coil being compressed to the coils on both sides of each slot in the circumferential direction. A structure for attaching a Shijishisa to a Tanabata rotor, characterized in that the Shijishisa is held in a slot.