JPH10327552A - Stepping motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stepping motor, wherein its lead wires can be drawn out in its axial direction without increasing the number of its parts, its working manhours, and its size. SOLUTION: A method capable of drawing out lead wires 5a, 5b in the axial direction of a stepping motor comprises a step for setting the dimension between terminals 3, 3 of a coil bobbin 1 and the dimension between terminals 4, 4 of a coil bobbin 2 to different ones from each other, a step for providing in the outer periphery of a motor case 6 grooves of holding and fixing the lead wires 5a, 5b therein, a step for providing a wall on the outer periphery of a motor cover and arranging the lead wires 5a, 5b via the terminals 4, 4 of the coil bobbin 2 between, and a step for holding and fixing the lead wires 5a, 5b in the grooves of the outer periphery of a motor case 6 so as to set the wall of the outer periphery of the motor cover as to cover the terminals 3, 4 of the coil bobbins 1, 2 with it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stepping motor which is used for controlling the running of an automobile or the like, and requires a lead wire to be drawn out from an axial direction in view of attachment to equipment.

[0002]

2. Description of the Related Art As shown in FIG. 6, a conventional stepping motor in which lead wires need to be drawn out in the axial direction is connected by connecting a printed board 9 to a coil bobbin terminal 8 and connecting a lead wire 10 to the printed board 9 to make a lead. The wire 10 was drawn in the axial direction.

[0003]

However, in the above-mentioned conventional configuration, since a printed circuit board is added and the lead wire 10 is drawn out in the axial direction, there is a problem that the number of parts increases, the number of steps increases, and the size increases. .

The present invention has been made to solve the above-mentioned problems of the conventional stepping motor, and a stepping motor capable of extending lead wires in the axial direction without increasing the number of parts and man-hours and without increasing the size. The purpose is to provide.

[0005]

In order to solve the above-mentioned problems, the present invention relates to a method for manufacturing a semiconductor device having a terminal for connecting lead wires.
In each of the coil bobbins, a terminal between the terminals of one coil bobbin is made smaller than a terminal between the terminals of one coil bobbin, and a lead wire connected to a terminal of the coil bobbin having a small terminal distance is passed between terminals of the coil bobbin having a large terminal distance. Is set so that the lead wire can be drawn out in the axial direction of the line.

With the above configuration, it is possible to prevent an increase in the number of parts and man-hours and an increase in size.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first and second aspects of the present invention, two coil bobbins are connected in an axial direction, and each of the coil bobbins has a terminal for connecting a lead wire. In the motor, the dimension between the terminals of the other coil bobbin is made smaller than the dimension between the terminals of one coil bobbin, and the lead wire connected to the terminal of the coil bobbin with the smaller dimension between the terminals is passed through the terminals of the coil bobbin with the larger dimension between the terminals in the axial direction of the motor. The terminal has a function of allowing the terminal to be drawn out in the axial direction without hindering the wiring of the lead between the coil bobbins.

According to the third and fourth aspects of the present invention, the lead wire is held in the pull-out direction by being sandwiched between the motor case contacting the lead wire from the motor inner diameter side and the motor cover contacting the motor outer diameter side. It has a function of fixing the lead wire drawn out in the axial direction from the terminal connecting portion so as not to be moved by a predetermined dimension over an external force, and further protecting the lead wire from external electrical contact.

[0009]

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

1 to 5, a coil bobbin A2 made of a synthetic resin material has terminals 4 and a coil bobbin B1.
Are provided with terminals 3 by integral molding.
Here, when the inter-terminal dimension of the coil bobbin A2 is L1 and the inter-terminal dimension of the coil bobbin B1 is L2, L2 is L1.
Is larger than half and smaller than L1. A lead wire 5a is connected to the terminal 3 of the coil bobbin B1, and the lead wire 5a is arranged so as to pass between the terminals 4.

A motor case 6 and a motor cover 7 made of synthetic resin are provided. Grooves 6a for holding and fixing the lead wires 5a and 5b are provided in the motor case 6 at predetermined intervals in the axial direction of the outer periphery of the motor case 6. And holds and fixes the lead wires 5a and 5b.

The motor cover 7 is provided with a wall 7a in the axial direction of the outer periphery of the motor cover 7, and covers the terminals 3 and 4.

In this embodiment, the dimensions L1 and L2 between the terminals of the coil bobbin A2 and the coil bobbin B1 are set so that L2 is larger than half of L1 and smaller than L1, and the lead wire 5a is arranged between the terminals. By covering the terminals with the wall 7a of the case 7, the lead wires 5a and 5b can be drawn out in the axial direction of the motor.

[0014]

As is apparent from the above embodiments, according to the first and second aspects of the present invention, the lead wires can be arranged between the terminals by changing the dimensions between the terminals of the coil bobbins A and B. Therefore, the lead wire can be drawn out in the axial direction of the motor without adding components such as a printed circuit board and without increasing the size.

According to the third and fourth aspects of the present invention, a terminal is provided by providing a groove in the axial direction of the outer periphery of the motor case, holding and fixing the lead wire, and providing a wall in the axial direction of the outer periphery of the motor case. Thereby, the lead wire can be pulled out while being held and fixed in the axial direction of the motor.

[Brief description of the drawings]

FIG. 1 is a front view of a stepping motor according to an embodiment of the present invention without a motor cover.

FIG. 2 is a front view of a stepping motor showing an embodiment of the present invention.

FIG. 3 is a front view of a stator of the stepping motor according to the embodiment of the present invention.

FIG. 4 is a front view of a motor case of the stepping motor according to the embodiment of the present invention.

FIG. 5 is a front view of a motor cover of the stepping motor according to the embodiment of the present invention.

FIG. 6 is a side view of a conventional stepping motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coil bobbin B 2 Coil bobbin A 3 Terminal of coil bobbin B 4 Terminal of coil bobbin A 5a, 5b, 10 Lead wire 6 Motor case 6a Groove of motor case 7 Motor cover 7a Motor cover wall 8 Terminal 9 Printed circuit board

Claims (4)

[Claims] In a stepping motor having two coil bobbins connected in the axial direction and having a terminal for connecting a lead wire to each coil bobbin, a terminal of the other coil bobbin is larger than a distance between terminals of one coil bobbin. A stepping motor characterized in that a lead wire connected to a terminal of a coil bobbin having a small terminal dimension is passed between terminals of a coil bobbin having a large terminal dimension, and a lead wire is drawn out in the axial direction of the motor. 2. When the inter-terminal dimension of the first coil bobbin is L1 and the inter-terminal dimension of the second coil bobbin is L2, L2 is larger than half of L1 and smaller than L1, or L1 is L2. Of the terminals is set so as to be larger than half of L2 and smaller than L2, and when L1 is smaller than L2, a lead wire connected to the terminal of the first coil bobbin is passed between the terminals of the second coil bobbin. , L
2. The stepping motor according to claim 1, wherein when 1 is larger than L2, a lead wire connected to a terminal of the second coil bobbin is passed between terminals of the first coil bobbin. 3. The lead wire is held and fixed in the pull-out direction by being sandwiched between a motor case contacting the lead wire from the motor inner diameter side and a motor cover contacting from the motor outer diameter side. Item 3. The stepping motor according to item 1 or 2. 4. A wall provided with a plurality of grooves for holding lead wires at predetermined intervals in an axial direction of an outer periphery of a motor case, facing a portion where the plurality of grooves are arranged, and covering a terminal portion of the coil bobbin. 4. The stepping motor according to claim 3, further comprising a motor cover provided with a motor.