JP2587862Y2 - Stator of 4-pole shading motor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of a four-pole shading motor used for blowing an oil fan heater.

[0002]

2. Description of the Related Art In recent years, in oil-fired heating equipment,
There is an increasing demand for fan heaters instead of conventional stoves. It is said that the bobbin wound terminal type is more advantageous than the general straight lead wire type in terms of productivity and versatility of the stator structure of the four-pole shading motor used for air blowing.

The configuration of a conventional bobbin wound terminal type four-pole shading motor will be described below with reference to FIG.

As shown in the figure, coil bobbins 24, 25, 26, and 27 on which a shading coil 22 and a field coil 23 are wound are arranged at four field pole portions of a stator inner core 21.
The coil bobbin 24 is provided with a terminal block 28 integrally formed with the coil bobbin main body. Further, terminals 29 and 30 are supported on the terminal block 28. Then, the winding start coil terminal 31 of the field coil 23 is connected to the terminal 29,
After winding in the order of the coil bobbins 24, 25, 26, 27, the end-of-winding coil terminal 32 is connected to the terminal 30. After the winding, the stator outer core 33 was press-fitted and fixed to the stator inner core 21.

[0005]

In such a conventional structure, the terminals 29 and 30 are both supported by the terminal block 28, so that the end of the coil end 32 becomes longer and the coil end is wound around the coil bobbin 24. There have been problems such as difficulty in securing an insulation distance from the wired field coil and easy occurrence of disconnection.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem, and a bobbin winding terminal type four-pole shading that can reliably ensure an insulation distance between a coil end coil end and a coil start coil and prevent occurrence of disconnection. An object of the present invention is to provide a motor stator.

[0007]

In order to achieve the above object, a stator of a four-pole shading motor according to the present invention has a stator core having four shading coils disposed on a field pole and a stator core having four shading coils. A field coil continuously wound through three coil bobbins, a stator outer core press-fitted and fixed to a stator inner core for forming a magnetic circuit after winding, and a winding start of the four coil bobbins And a terminal block integrally formed on the coil bobbin at the end of winding and a terminal supported by this,
The winding start field coil terminal to the terminal supported by the terminal block of the winding start coil bobbin, winding end field coil terminal is connected to a terminal supported by the terminal block of winding end coil bobbin, before
The winding start coil bobbin and the winding end bobbin are adjacent,
Furthermore, since the terminal block is located between adjacent field pole portions,
The spacing between the slaves is small.

[0008]

According to the present invention, the terminal connected to the end-of-winding coil terminal is located near the end-of-winding coil bobbin according to the above configuration, so that the crossover of the end-of-winding coil terminal can be shortened. And the occurrence of disconnection can be suppressed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, coil bobbins 4, 5, 6, 7 on which a shading coil 2 and a field coil 3 are wound are arranged at four field pole portions of a stator inner core 1. The coil bobbin 4 at the beginning of winding and the coil bobbin 7 at the end of winding are provided with terminal blocks 8 and 9 integrally molded with the main body.
Terminals 10 and 11 are supported, respectively. Then, the winding start coil terminal 12 of the field coil 3 is connected to the terminal 10 supported by the terminal block 8 integrally formed with the winding start coil bobbin 4, and wound in the order of the coil bobbins 4, 5, 6, and 7. Thereafter, the end-of-winding coil terminal 13 is connected to the terminal 11 supported by the terminal block 9 integrally molded with the end-of-winding coil bobbin 7, and after winding, the stator outer core 14 is press-fitted and fixed to the stator inner core 1. You.

As described above, according to the embodiment of the present invention, the terminal 11 to which the end coil terminal 13 is connected is located near the end coil bobbin 7, so that the crossover of the end coil terminal 13 is shortened. You can do it.

[0012]

As is apparent from the above embodiment, according to the present invention, the terminal to which the end-of-winding coil terminal is connected is located near the end-of-winding coil bobbin. Thus, it is possible to provide a stator for a bobbin winding terminal type four-pole shading motor in which the insulation distance between the end-of-winding coil terminal and the start-of-winding coil is ensured and the occurrence of disconnection is prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a stator of a four-pole shading motor according to an embodiment of the present invention;

FIG. 2 is an external perspective view of the stator of the four-pole shading motor according to the embodiment of the present invention without the stator outer core;

FIG. 3 is a plan view of a stator of a conventional four-pole shading motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core in stator 3 Field coil 4, 5, 6, 7 Coil bobbin 8, 9 Terminal block 10, 11 Terminal 12 Winding start coil terminal of field coil 13 End winding coil terminal of field coil

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02K 3/30-3/52 H02K 17/10

Claims (1)

(57) [Scope of request for utility model registration] 1. A stator core having four shading coils disposed on a field pole, a field coil continuously wound on the stator core via four coil bobbins, and a magnetic circuit after winding. A stator outer core press-fitted and fixed to a stator inner core to be formed; a terminal block integrally formed on each of the winding start and end coil bobbins of the four coil bobbins; and a terminal supported by the terminal blocks. The winding start field coil terminal is connected to a terminal supported by the terminal block of the winding start coil bobbin, and the winding end field coil terminal is connected to a terminal supported by the terminal block of the winding end coil bobbin.
The end of the bobbin is adjacent, and the terminal block is adjacent
The stator of the 4-pole shading motor located between the magnetic poles .