JP2001145325A - Multiple exciting winding small motor and multi-pole connector therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain standardization by eliminating need for individual specifications for connection of respective terminals of a plurality of stator windings with a cable from an external power supply, in a conventional small motor having a plurality of exciting winding (two or more phases), and simplification and space saving by eliminating a junction like a printed circuit board. SOLUTION: This multiple exciting winding small motor and multi-pole connector therefor 15 are provided, as an integral contact, with a conductor having a winding retainer to which the terminals of the respective exciting windings 8 of the multiple exciting winding small motor having a plurality of exciting windings are directly connected, and a connection making electric connection in performing fitting with the connector 18 from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-excitation winding small motor and a multi-pole connector for a motor, and more particularly to a multi-excitation winding small motor having a plurality of excitation windings and respective terminals of the plurality of excitation windings. TECHNICAL FIELD The present invention relates to a motor multi-pole connector for connecting a unit and a cable from an external power supply unit without using other relay parts.

[0002]

2. Description of the Related Art FIGS. 4A and 4B show a hybrid two-phase stepping motor having a general structure of a small motor having a plurality of excitation windings. Such a two-phase hybrid type stepping motor comprises a stator 1 having a plurality of small teeth on a tip surface on an inner diameter side and having eight main poles which are equally spaced apart in a circumferential direction and has a plurality of small teeth. The rotor 4 is composed of a rotor core 3 having a plurality of teeth provided on the outer periphery of the magnet 2 which clamps the magnetized magnet 2 in the middle, and end brackets 5 and 6. The main pole of the stator iron core 7, which is one component of the stator 1, is shifted by 45 ° in mechanical angle to A
The phase and B phase excitation windings 8 are arranged, and each of the A and B phases has a winding start and end end. Typically,
The winding terminal portion is connected to a structure such as the lead wire 9 with connection work such as a common line, and is connected to an external power supply device for driving a motor.

FIG. 5 shows a conventional motor which is supplied with electric power via lead wires 9 directly connected to respective terminals of an exciting winding 8. FIG. 6 shows a conventional motor in which each terminal of the winding 8 is once connected to a substrate 10 and externally supplied with power from a connector 11 or the like installed on the other conductor terminal via a conductor pattern on the substrate. FIGS. 7A to 7C show a conventional motor in which each terminal of the exciting winding 8 is directly connected to a predetermined header pin 13 of a header pin type connector 12 previously set at a predetermined position.

[0004] Reference numeral 14 denotes an insulator surrounding the outside of the exciting winding 8.

[0005]

The conventional stator configuration as described above has the following problems. That is, in the conventional motor shown in FIG. 5, individual specifications are caused by the specifications of the lead wire length and the terminal portion regardless of the commonality of the basic specifications of the motor such as the excitation winding 8 and the like, and the product cannot be standardized. was there.

In the conventional motor shown in FIG. 6, the above-mentioned problem is solved and the stator specifications from the exciting winding 8 to the substrate 10 can be shared, but the substrate 10 itself is connected to an external power supply device. Since it does not have a direct connection function, it is merely a relay structure, and further lead wires or connectors 11 are required in addition to the substrate 10, resulting in an increase in the number of parts and processing steps. 7A and 7B
The conventional motor shown in FIG. 1 can solve the above-mentioned problems, but in order to secure a sufficient connection area with the exciting winding 8 and workability, as shown in FIG. 13 and the exciting winding 8 is connected to the header pin 1
3 requires more than a predetermined number of windings, but if the workability is to be ensured, the height H of the header pin 13 shown in FIG. In order to obtain an output, there have been problems such as an increase in the thickness of the motor and an inability to increase the wire diameter of the winding in order to suppress the increase.

An object of the present invention is to solve the above problems.

[0008]

SUMMARY OF THE INVENTION A multi-excitation winding type small motor according to the present invention includes a stator having a plurality of excitation windings, a rotor, and a multi-pole connector used for an external power supply. The multi-pole connector has a conductor portion having a winding holding portion for directly connecting a terminal portion of each of the excitation windings, and a connecting portion for performing an electrical connection at the time of fitting with an external connector. It is characterized by having as a contact.

In the motor multi-pole connector of the present invention, a conductor portion having a winding holding portion for directly connecting a terminal portion of each excitation winding inside the motor and an electrical connection when the connector is externally connected are provided. The connection portion to be made is provided as an integral contact.

The above conductor is a schematic plan view.

[0011] The winding holding section comprises a pair of wire barrel sections.

The above multipolar connector has a rib having a convex upper surface in the winding holding portion.

[0013]

As described above, according to the present invention, it is possible to directly connect a plurality of excitation windings of a multi-excitation winding type small motor to each terminal portion in a space-saving manner, and to connect from an external power supply unit. It can be simplified without using other relay parts,
Workability can be significantly improved. Further, it is possible to increase the thickness of the stator core without changing the external dimensions of the motor, and it is also possible to cope with the thick wire diameter of the exciting winding, thereby improving the motor characteristics such as torque characteristics and heat generation.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIG. 1, a stator 1 having a plurality of stator main poles having a plurality of small teeth on a tip surface on an inner diameter side, and an excitation wound around an outer periphery of the main pole. Winding 8
Each end portion of the exciting winding 8 is provided at a predetermined place previously installed on the insulator 14 of the two-phase hybrid type stepping motor having the insulator 14 installed for the purpose of insulating the iron core and the exciting winding. A multi-pole connector 15 having a function of connecting to an external power supply unit is provided.

2A to 2C show a multipolar connector 15 of the present invention, 16 is a connector housing made of an insulator, 17 is a fitting recess provided on the upper surface of the connector housing 16 for receiving a mating connector 18, Reference numeral 19 denotes a connection portion with the counterpart connector 18 provided in the fitting recess 17 by the number of poles of the counterpart connector 18, 20 denotes a conductor portion exposed on the outer surface of the connector housing 16, and 21 denotes a metal integrated with the conductor portion 20. A winding holding unit comprising a plurality of wire barrels made of a member, which fixes the excitation winding 8 on the conductor 20 regardless of the wire diameter and also makes an electrical connection.

Reference numeral 22 denotes a rib protruding to the upper surface side, and particularly when the wire diameter is small, has a function of suppressing the excitation winding 8 from being detached and improving workability.

FIGS. 3A and 3B show the use state of the motor multi-pole connector of the present invention.
The housing 24 is also a contact.

Although the above embodiment describes an example in which the multipolar connector 15 of the present invention is applied to a two-phase hybrid type stepping motor, it can be similarly applied to a small motor having a plurality of excitation windings. Of course.

[0020]

As described above, according to the multi-excitation winding type small motor and the multi-pole connector for the motor of the present invention, the connection between each terminal of the plurality of excitation windings and the cable from the external power device. Can be simplified without using other relay parts, which saves space, increases the thickness of the stator core without changing the external dimensions of the motor, and can also handle the thick wire diameter of the exciting winding. As a result, improvements in motor characteristics such as torque characteristics and heat generation can be achieved. Further, there are various advantages such as standardization of the motor stator.

[Brief description of the drawings]

FIG. 1 is a perspective view of a stator of a hybrid stepping motor according to the present invention.

FIG. 2A is a plan view of the multipolar connector of the present invention.

FIG. 2B is a front view of the connector shown in FIG. 2A.

FIG. 2C is a bottom view of the connector shown in FIG. 2A.

FIG. 3A is a vertical sectional front view for explaining a use state of the multipolar connector of the present invention.

FIG. 3B is a longitudinal sectional front view of the mating connector.

FIG. 4A is a front view showing a cross section of a part of a conventional hybrid type stepping motor.

FIG. 4B is a side view of the motor shown in FIG. 4A.

FIG. 5 is a perspective view of a stator part of a conventional lead-wire hybrid type stepping motor.

FIG. 6 is a perspective view of a stator portion of a conventional board-type hybrid stepping motor.

FIG. 7A is a perspective view of a stator portion of a conventional connector-type hybrid stepping motor.

FIG. 7B is a front view of the stator part of FIG. 7A.

FIG. 7C is a side view of the stator portion shown in FIG. 7A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator 2 Magnet 3 Rotor iron core 4 Rotor 5 End bracket 6 End bracket 7 Stator iron core 8 Excitation winding 9 Lead wire 10 Board 11 Connector 12 Header pin type connector 13 Header pin 14 Insulator 15 Multipole connector Reference Signs List 16 Connector housing 17 Fitting concave part 18 Mating connector 19 Connection part 20 Conductor part 21 Winding holding part 22 Rib 23 Housing 24 Contact

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinya Abe 3-93 Aioimachi, Kiryu-shi, Gunma Japan Kiryu Plant (72) Inventor Tomoya Kaneko 1-5-4, Fukami-Higashi, Yamato-shi, Kanagawa No. Within Molex, Inc. (72) Inventor Tohru Maruyama 1-4-5, Fukamihigashi, Yamato-shi, Kanagawa Prefecture Within (72) Inventor Yasunori Oya, 1-5-1-4 Fukamihigashi, Yamato-shi, Kanagawa Prefecture No. Within Molex, Inc. (72) Inventor Yoshikazu Ito 1-4-5, Fukami-Higashi, Yamato-shi, Kanagawa Prefecture Inside of Molex, Inc. (72) Hiroshi Ikesugi 1-5-1, Fukami-Higashi, Yamato-shi, Kanagawa No. 4 Molex Co., Ltd. F-term (reference) 5H604 AA05 AA08 BB02 BB14 CC05 CC16 QB03 5H605 AA07 AA08 BB05 CC06 EC04 EC05

Claims (5)

[Claims] 1. A multi-pole connector, comprising: a stator having a plurality of excitation windings; a rotor; and a multi-pole connector used for an external power introduction unit, wherein the multi-pole connector is a terminal of each of the excitation windings. A multi-excitation winding type small motor comprising: a conductor having a winding holding part for directly connecting parts and a connecting part for making an electrical connection at the time of fitting with an external connector as an integral contact. 2. An integrated contact comprising: a conductor having a winding holding portion for directly connecting a terminal portion of each excitation winding inside a motor; and a connecting portion for making an electrical connection when fitted with a connector from the outside. A multi-pole connector for a motor, comprising: 3. The multi-pole connector for a motor according to claim 2, wherein said conductor portion is substantially flat. 4. The multi-pole connector for a motor according to claim 2, wherein said winding holding portion comprises a pair of wire barrel portions. 5. The multi-pole connector for a motor according to claim 2, wherein an upper surface convex rib is provided in the winding holding portion.