JP4276345B2 - Multi-excitation winding type small motor and multi-pole connector for motor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-excitation winding type small motor and a multi-pole connector for a motor, in particular, a multi-excitation winding type small motor having a plurality of excitation windings, each terminal portion of the plurality of excitation windings and an external power supply unit. The present invention relates to a multi-pole connector for motors that can be connected to a cable without using other relay parts.
[0002]
[Prior art]
A hybrid two-phase stepping motor having a general structure of a small motor having a plurality of excitation windings is shown in FIGS. 4A and 4B. Such a two-phase hybrid stepping motor includes a stator 1 having eight main poles that are evenly spaced apart in the circumferential direction having a plurality of small teeth on the inner diameter side tip surface, and an axial direction. It comprises a rotor 4 composed of a rotor iron core 3 provided with a large number of teeth on its outer periphery, which sandwiches a 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 arranged with an A-phase and B-phase excitation winding 8 shifted by 45 ° in mechanical angle. It has a terminal part at the beginning and end of winding. Generally, the winding terminal portion is connected to a structure such as a lead wire 9 with connection work such as a common line, and is connected to an external power supply device that drives a motor.
[0003]
FIG. 5 shows a conventional motor that is supplied with electric power through lead wires 9 directly connected to the respective end portions of the excitation winding 8. FIG. 6 shows a conventional motor in which each terminal of the winding 8 is once connected to the substrate 10 and supplied with electric power from the outside by 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 end of the excitation 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]
[Problems to be solved by the invention]
The conventional stator configuration as described above has the following problems. In other words, the conventional motor shown in FIG. 5 has the disadvantage that standardization of the product cannot be achieved by inviting individual specifications depending on the lead wire length and terminal specifications regardless of the common motor basic specifications such as the excitation winding 8. was there.
[0006]
In the conventional motor shown in FIG. 6, the above-mentioned problem is solved, and it is possible to share the stator specifications from the excitation winding 8 to the substrate 10, but the substrate 10 itself is directly connected to the external power supply device. Since it does not have a proper connection function, it is merely a structure for relay, and further lead wires or connectors 11 in addition to the substrate 10 are required, resulting in an increase in the number of parts and the number of processing steps. In the conventional motor shown in FIGS. 7A and 7B, the above-described problems can be solved. However, in order to secure a sufficient connection area and workability with the excitation winding 8, the rotation of the motor as shown in the drawings. A so-called “carragage” operation is required in which the header pin 13 is erected in parallel with the axis and the excitation winding 8 is wound around the header pin 13 a predetermined number of times. To ensure the workability, the header shown in FIG. As a result, it is necessary to make the height H of the pin 13 sufficiently, and as a result, in order to obtain the same output, the thickness of the motor increases or the wire diameter of the winding cannot be increased to suppress the increase. It was causing problems.
[0007]
An object of the present invention is to solve the above problems.
[0008]
[Means for Solving the Problems]
The multi-excitation winding type small motor of the present invention includes a stator having a plurality of excitation windings, a rotor, and a multi-pole connector used for an external power introduction unit. It has a conductor part having a winding holding part for directly connecting the terminal part of each exciting winding and a connection part for making an electrical connection when fitting with an external connector as an integral contact. An excitation winding type small motor , wherein the winding holding part is composed of a pair of wire barrel parts protruding from the conductor part so as to be shifted from each other, and a convex rib is provided on the upper surface of the conductor part. To do.
[0009]
The multipolar connector for a motor according to the present invention is a connecting portion that performs electrical connection when a conductor portion having a winding holding portion that directly connects a terminal portion of each excitation winding inside the motor and a connector from the outside is fitted. possess the door as an integral contact, and wherein the winding holding portion comprises a pair of wire barrel portion protruding offset from one another from the conductor portion, further provided with a top surface convex rib of the conductor portion [0013]
[Action]
As described above, according to the present invention, it is possible to directly connect a plurality of exciting windings of a multi-excitation winding type small motor to each terminal portion in a space-saving manner, and to connect the external power supply unit to other relays. Simplification can be achieved without using parts, and workability can be greatly improved. In addition, the stator core thickness can be increased without changing the outer dimensions of the motor, and it is possible to cope with the thick wire diameter of the excitation winding. As a result, the motor characteristics such as torque characteristics and heat generation can be improved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0015]
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 the inner diameter side end face, and an excitation winding 8 wound around the outer circumference of the main pole. And each terminal portion of the excitation winding 8 at a predetermined location previously installed in the insulator 14 of the two-phase hybrid stepping motor having the insulator 14 installed for the purpose of insulation between the iron core and the excitation winding. A multipolar connector 15 having a function of connection with an external power supply unit is provided.
[0016]
2A to 2C show the multipolar connector 15 of the present invention, in which 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 the mating connector 18, and 19 is a fitting A connection portion with the counterpart connector 18 provided for the number of poles of the counterpart connector 18 in the mating recess 17, 20 is a conductor portion exposed on the outer surface of the connector housing 16, and 21 is a metal member integrated with the conductor portion 20. It is a winding holding part composed of a plurality of wire barrel parts, and the excitation winding 8 is fixed on the conductor part 20 regardless of the wire diameter and is also electrically connected.
[0017]
Reference numeral 22 denotes a rib convex on the upper surface side, and has a function of improving workability by suppressing the exciting winding 8 from being detached particularly when the above-mentioned wire diameter is small.
[0018]
3A and 3B show the use state of the multipolar connector for a motor of the present invention, wherein 23 is a housing of the mating connector 18, and 24 is a contact.
[0019]
The above embodiment describes an example in which the multipolar connector 15 according to the present invention is applied to a two-phase hybrid stepping motor, but it is of course applicable to a small motor having a plurality of excitation windings in the same manner. .
[0020]
【The invention's effect】
As described above, according to the multi-excitation winding type small motor and multi-pole connector for motors of the present invention, the connection between each terminal portion of the plurality of excitation windings and the cable from the external power device is another relay component. Space can be saved without using a wire, and the stator core thickness can be increased without changing the external dimensions of the motor. Furthermore, it can cope with the thick wire diameter of the excitation winding, resulting in torque characteristics. Improvement of motor characteristics such as heat generation can be achieved. Furthermore, there are various benefits 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 of 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.
2C is a bottom view of the connector shown in FIG. 2A. FIG.
FIG. 3A is a longitudinal front view for explaining a use state of the multipolar connector of the present invention.
FIG. 3B is a longitudinal front view of the mating connector.
FIG. 4A is a front view, partly in section, of a conventional hybrid stepping motor.
4B is a side view of the motor shown in FIG. 4A. FIG.
FIG. 5 is a perspective view of a stator portion of a conventional lead wire type hybrid stepping motor.
FIG. 6 is a perspective view of a stator portion of a conventional substrate type hybrid stepping motor.
FIG. 7A is a perspective view of a stator portion of a conventional connector type hybrid stepping motor.
7B is a front view of the stator portion of FIG. 7A. FIG.
7C is a side view of the stator portion shown in FIG. 7A. FIG.
[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 | substrate 11 Connector 12 Header pin type connector 13 Header pin 14 Insulator 15 Multipolar connector 16 Connector housing 17 Fitting recess 18 Mating connector 19 Connection portion 20 Conductor portion 21 Winding holding portion 22 Rib 23 Housing 24 Contact

Claims (2)

A stator having a plurality of excitation windings, a rotor, and a multipolar connector used for an external power introduction unit, and the multipolar connector directly connects the terminal portions of the excitation windings. A multi-excitation winding type small motor comprising a conductor portion having a winding holding portion and a connection portion for performing electrical connection when fitting with an external connector as an integral contact , The multi-excitation winding type small motor characterized in that the wire holding part is composed of a pair of wire barrel parts protruding from the conductor part so as to be shifted from each other, and a convex rib is provided on the upper surface of the conductor part. Possess a conductor portion having a winding holding portion for connecting a terminal portion of each excitation winding in the motor directly, and a connecting portion for electrical connection when the mating of the connector from the outside as a single contact, the The winding holding part is composed of a pair of wire barrel parts protruding from the conductor part so as to be shifted from each other, and a convex rib is provided on the upper surface of the conductor part .

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