JP3065812B2 - Motor with built-in capacitor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a motor with a built-in capacitor in which a film capacitor is provided on the outer periphery of a stator.

[0002]

2. Description of the Related Art Conventionally, motors equipped with capacitors have been used for various devices such as fans and office equipment. One type of such motors is a motor with a built-in capacitor according to the proposal of the applicant. (Utility model registration application No. 017812 in 1992). In the motor with a built-in capacitor, a cylindrical bobbin is fitted around an outer periphery of a stator around which a main winding and an auxiliary winding are wound, and a film-like capacitor using a heat-resistant film is wound around an outer peripheral surface of the bobbin, and a wiring board is provided. It has.

According to this motor with a built-in capacitor, since the heat-resistant film is used for the capacitor, the capacitor can be mounted around the stator. For this reason, it is not necessary to provide a storage space and a case for the capacitor outside the motor, and the motor can be downsized. In addition, since the capacitor can be formed on the bobbin before the stator is mounted, the stator winding step and the capacitor forming step can be performed simultaneously in parallel. For this reason,
It is possible to improve the production efficiency of the motor.

[0004]

However, the conventional motor with a built-in capacitor has the following problems. In other words, the internal wiring process when manufacturing a conventional motor with a built-in capacitor is mainly performed by soldering the ends of the windings and lead wires, which are flexible, irregular shaped products, or by connecting these ends to a flat wiring board or capacitor. Soldering was performed directly on the electrodes. However, since this type of soldering is a complicated operation that requires delicate operation with a fingertip, all internal wiring steps have to be performed manually.

Therefore, the conventional motor with a built-in capacitor has a problem that it is difficult to automate an internal wiring process. Further, even when the soldering is performed manually, it is difficult to speed up such soldering. For this reason, it has been difficult to improve the manufacturing efficiency of the conventional motor with a built-in capacitor.
SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems of the related art, and an object of the present invention is to provide a motor with a built-in capacitor that can easily automate an internal wiring process.

[0006]

To achieve the above object, a motor with a built-in capacitor according to the present invention is a motor with a built-in capacitor having a configuration as in the above-mentioned conventional example.
At the upper end of the bobbin, a connection pin connected to each of the windings and a first capacitor pin connected to one pole of the capacitor are erected, and the upper end of the capacitor is connected to the other pole of the capacitor. That the connection pin, the first capacitor pin, or the second capacitor pin is connected to the lead hole. Features.

[0007]

The present invention having the above configuration has the following operation. That is, the motor with a built-in capacitor of the present invention includes a bobbin on the outer periphery of the stator and an upper end of the capacitor.
A connection pin connected to each winding and a capacitor pin connected to a capacitor are provided upright. Further, a lead hole is provided in the wiring board, and each pin is connected to the lead hole. For this reason, if the winding ends are connected in advance to each pin, which is a standard product, the ends of the windings and lead wires, which are flexible, irregular products, can be soldered together, or these ends can be flattened. The complicated work of directly soldering to a wiring board or a capacitor electrode can be greatly reduced. Therefore, according to the present invention, a motor with a built-in capacitor that can easily automate the internal wiring process can be provided.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a motor with a built-in capacitor according to the present invention.

(1) Configuration of the Embodiment FIG. 1 The motor with a built-in capacitor of this embodiment has a stator core 3 on which a main winding 1 and an auxiliary winding 2 are wound, as shown in FIG.
A cylindrical bobbin 4 is fitted around the outer periphery of the bobbin 4, and a film capacitor 5 using a heat-resistant film on the outer peripheral surface of the bobbin 4.
Is wound, and a wiring board 6 for intermediate connection and a wiring board 7 for power supply connection are provided on the upper side.

At the upper end of the bobbin 4, as shown in FIG.
And a capacitor pin 10 connected to a metallikon section 9 which is one pole of the capacitor 5. At the upper end of the capacitor 5, a capacitor pin 12 connected to a metallikon portion 11 which is the other pole of the capacitor 5 is provided upright. That is, the connection pin 8 and the capacitor pin 10
Is insert-molded together with the bobbin 4, as shown in FIGS. In particular, capacitor pin 1
As shown in FIG. 4, the reference numeral 0 penetrates the bobbin 4 up and down, and the lower part is bent in a U-shape, and the bent end is joined to the metallikon part 9 at the lower end of the capacitor 5 by metallikon. The capacitor pin 12 is connected to the capacitor 5 as shown in FIG.
Metallicon is joined to the metallikon portion 11 at the upper end.
As shown in FIG. 1, FIG. 3, FIG. 4 and FIG.
7 is wound and soldered. In particular, the winding ends of the main winding 1 and the auxiliary winding 2 are terminated at the capacitor pins 10 and 1.
2 and soldered.

[0011] As shown in FIG.
Lead holes 13 are provided at positions corresponding to the connection pins 8 and the capacitor pins 10, and a wiring pattern 14 is formed between the lead holes 13. Each connection pin 8 and capacitor pin 10 are inserted into a lead hole 13 and soldered. Although not shown, a socket for connecting to an external power supply is connected to the wiring board 7 for power supply connection, and the stator core 3 includes the bobbin 4, the capacitor 5, and the wiring boards 6 and 7. Insert molding is performed with resin so that the socket is exposed to the outside, and a rotor is provided on the inner peripheral side of the stator core 3. A high heat-resistant resin such as a PPS resin or a Teflon resin is used for a film forming the capacitor.

(2) Functions and Effects of the Embodiment The manufacturing of the motor with a built-in capacitor of the embodiment is performed as follows. That is, the capacitor 5 is formed on the bobbin 4, and the capacitor pins 10 and 12 are connected to the metallikon portions 9 and 11 of the capacitor 5 by metallikon. The winding process of the stator core 3 is performed in parallel with this, and the bobbin 4 is pressed into the outer periphery of the stator core 3 after the winding process is completed. Here, on the outer peripheral side of the core insulating pre-mold resin 15 covering the stator core 3, a plurality of spool projections 16 for winding division are provided at equal intervals in the vertical direction. Therefore, the press-fitting of the bobbin 4 is performed using the spool projections 16 as guides. After the press-fitting, the ends 17 of the windings 1 and 2 are wound around the pins 8, 10 and 12, and soldered by the solder 18. Thereafter, the wiring boards 6 and 7 are connected to the respective pins 8 and
Each pin 8 and 10 is soldered to each lead hole 13 by solder 18 so that the pin 10 penetrates each lead hole 13. At this time, although not shown, the wiring boards 6 and 7 are attached by inserting a wiring board mounting projection provided on the resin 15 into a mounting hole of the wiring board and heating and deforming the tip of the projection. Then, the stator core 3
Is insert-molded with resin together with the bobbin 4, the capacitor 5, and the wiring boards 6 and 7 to form a stator housing.

As described above, according to the present embodiment, the ends of the windings and the lead wires, which are flexible indefinite shapes, are soldered to each other, or these ends are directly connected to a flat wiring board or a capacitor electrode. Since the complicated work of soldering can be greatly reduced, automation of the internal wiring process is facilitated. Even when soldering is performed manually, the soldering can be speeded up. For this reason, according to the present embodiment, the motor manufacturing efficiency can be improved.

In particular, in this embodiment, since the capacitor is built in the motor, it is not necessary to connect the capacitor to the motor again, and the motor can be used only by connecting the power supply line. Further, the capacitor of the present embodiment is excellent in moisture resistance because it is resin-molded integrally with the stator. Therefore, even when the capacitor is used in a high humidity environment such as a showcase or a condensing unit, the capacitor does not absorb moisture from the connection terminal. Therefore, it is not necessary to take measures against humidity such as sealing the connection terminal with silicon.

(3) Other Embodiments The present invention is not limited to the above embodiment, but includes the following other embodiments. For example, connection pins or capacitor pins provided on a bobbin can be driven into the formed bobbin without performing insert molding. Further, the positions and numbers of the connection pins and the respective capacitor pins can be freely changed according to the mode of the winding and the circuit configuration.
In addition, the configuration of the wiring board can be freely changed according to this change. The means for connecting the power supply connection wiring board and the power supply line is not limited to the socket, and a lead wire may be used.

[0016]

As described above, according to the present invention, it is possible to provide a motor with a built-in capacitor in which the internal wiring process can be easily automated, so that the manufacturing efficiency of the motor can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a stator section before molding of a motor with a built-in capacitor according to an embodiment of the present invention.

FIG. 2 is a perspective view of a bobbin and a condenser of the motor.

FIG. 3 is a sectional view of a stator portion of the motor (A-A portion).

FIG. 4 is a cross-sectional view of a stator portion of the motor (BB section).

FIG. 5 is a sectional view of a stator portion of the motor (CC portion).

[Explanation of symbols]

 1: Main winding 2: Auxiliary winding 3: Stator core 4: Bobbin 5: Capacitor 6, 7: Wiring board 8: Connection pin 9, 11: Metallicon section 10, 12: Capacitor pin 13: Lead hole 14: Wiring pattern 15 : Pre-mold resin for core insulation 16: Spool protrusion 17: Winding end 18: Solder

Claims (1)

(57) [Claims] 1. A cylindrical bobbin is fitted around an outer periphery of a stator around which a main winding and an auxiliary winding are wound, and a film capacitor using a heat-resistant film is wound around an outer peripheral surface of the bobbin, and a wiring board is provided. In the motor with a built-in capacitor, a connection pin connected to each of the windings and a first capacitor pin connected to one pole of the capacitor are provided upright at the upper end of the bobbin. A second capacitor pin connected to the other pole of the capacitor is provided upright; a lead hole is provided in the wiring board; the connection pin, the first capacitor pin, or the second capacitor pin;
And a capacitor pin connected to the lead hole.