JPS6334468Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a DC linear motor, and the purpose of the invention is to easily wind the armature coil continuously and to obtain an armature suitable for mass production. At the same time, it is possible to rationally arrange the position sensing element at the position of the conductor part that contributes to the torque generated by the armature coil. It is also an object of the present invention to enable various types of coils to be easily formed using the same member, regardless of whether the coils are not superimposed on the armature coil or are superimposed on the armature coil. Other purposes will become apparent from the description below.

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

Fig. 1 shows an embodiment of the present invention, and is a longitudinal sectional view seen from the running direction, Fig. 2 is a perspective view of an armature as an embodiment, and Fig. 3 shows a field magnet as an embodiment. FIG. 4 is a developed view of a field magnet and armature coil shown as one embodiment, and FIG. 5 is a perspective view of an armature as another example.

First, a DC linear motor 1 as a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. This DC linear motor 1 is of a moving magnet type. Reference numeral 2 denotes a guide rail formed of a long plate-shaped plastic disposed on the fixed side, 2a denotes a support leg, and 3 denotes a guide formed along the longitudinal direction on the upper surface of one side of the guide rail 2. The groove 4 is an armature, which is formed by winding an armature coil 6 around a long magnetic plate 5. A large number of protrusions 7 are formed at fine pitches on both side surfaces of the magnetic plate 5 by punching means such as a press. The armature coil 6 is engaged and wound around the projection 7 to form the armature 4. The armature coil 6 is
For example, the conductor is led from point A to point B, and the protrusion 7-
1 and guided through the lower surface of the group of protrusions 7 to point C, from point C through the upper surface to point D, and from point D engaged with protrusion 7-2 and passed through the lower surface of the group of protrusions 7 to One armature coil 6 is formed by winding a large number of turns so as to arrive at point A.
The magnetic plate 5 is equipped with a group of armature coils 6 by shifting the phase of such winding operation by an appropriate angle so that the armature coils 6 overlap in the longitudinal direction.
It goes without saying that the armature coils 6 may be arranged so as not to overlap each other. The armature coil 6 has an opening angle width of the conductor portions 6a and 6a' that contributes to thrust equal to 2n- of the magnetic pole width of the field magnet, which will be described later.
It is preferable to form a winding with an opening angle width of 1 (n is a positive integer greater than or equal to 1) times, and in this embodiment, n=1 is selected (see FIG. 4). Reference numeral 8 denotes a large number of through holes for accommodating position detection elements provided in the magnetic plate 5. When winding a large number of armature coil 6 groups around the magnetic plate 5, conductor portions 6a or 8 that contribute to the thrust of the armature coil 6 are inserted. It is provided at a position opposite to 6a'. Reference numeral 9 denotes a printed circuit board, which is disposed on the lower surface of the armature 4. On the upper surface of the printed circuit board 9, a magnetoelectric conversion element 10 such as a Hall element or Hall IC used as a position detection element is disposed.
0 is stored in the through hole 8. Electrical components 11 such as a semiconductor rectifier and a control circuit are disposed on the lower surface of the printed circuit board 9, and housed in a recess 12 formed by the support leg 2a. The above components constitute the stator 12 of the DC linear motor. Reference numeral 13 denotes a mover that moves linearly in opposition to the stator 12. The mover 13 has a field magnet 15 in the form of a long plate with five poles, for example, as shown in FIG.
A group of guide rollers 16 and 16' are rotatably supported on both side surfaces of the magnetic yoke 14. The guide roller 16 is formed with a flange 16a facing the guide groove 3. FIG. 4 is a developed view of the field magnet 15 and six groups of armature coils, both terminals of which are connected to a semiconductor rectifier 17, and both output terminals of the magnetoelectric transducer 10 are also connected to the device 17. is connected to. As is clear from FIG. 4, the armature coils 6 are arranged in an overlapping arrangement, and the magnetoelectric transducer 10 is arranged at a position facing the conductor portion 6a that contributes to the thrust of the armature coil 6. 18-1 and 18-2 are a positive power terminal and a negative power terminal, respectively.

FIG. 5 is a perspective view of an armature 4' as another embodiment, in which the protrusion 7 of the magnetic plate 5 is bent in the vertical direction to facilitate winding of the armature coil 6. ing.

Since the present invention has the above configuration, a DC linear motor having the practical effects described at the beginning can be obtained.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention, and is a longitudinal sectional view seen from the running direction, Fig. 2 is a perspective view of an armature as an embodiment, and Fig. 3 shows a field magnet as an embodiment. FIG. 4 is a developed view of the field magnet and armature coil, and FIG. 5 is a perspective view of an armature as another embodiment. DESCRIPTION OF SYMBOLS 1... DC linear motor, 2... Guide rail, 2a... Support leg, 3... Guide groove, 4... Armature, 5... Magnetic plate, 6... Armature coil, 6
a, 6a'...Conductor portion contributing to thrust, 7...Protrusion, 8...Through hole for storing position detection element, 9...Printed circuit board, 10...Magnetoelectric conversion element (position detection element), 11... ... Electrical parts, 12 ... Stator, 13
...Mover, 14...Magnetic yoke, 15...Field magnet, 16, 16'...Guide roller,
16a... Tsuba, 17... Semiconductor rectifier, 18-
1...Positive power terminal, 18-2...Minus power terminal.

Claims (1)

[Claims for Utility Model Registration] 1. A long magnetic plate is provided with a through hole for accommodating a position sensing element, and a large number of protrusions are provided on both side surfaces of the magnetic plate, and an armature coil is attached to the protrusions. are engaged and wound to form an armature, field magnets having N and S magnetic poles in the longitudinal direction are opposed to each other, and either the armature or the field magnet is used as a moving element, and the other is used as a stator. A DC linear motor characterized by the following. 2. The DC linear motor according to claim 1, wherein the protrusion is bent in a vertical direction. 3 In the armature coil, the opening angle width of the conductor portion contributing to the thrust is 2n− of the magnetic pole width of the field magnet.
2. A direct current linear motor according to claim 1 or 2, characterized in that the DC linear motor is wound by 1 times (n is a positive integer of 1 or more). 4. The DC linear motor according to claim 3, wherein the armature coils are arranged in an overlapping manner.