JP2832568B2 - Insulator insertion device to motor core - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inserting an insulator into a motor core, which has been developed for inserting an insulator for insulation into a laminated core serving as a motor core.

[0002]

2. Description of the Related Art Motors are used for many purposes, but small and lightweight motors, such as those for cooling fans in OA equipment such as personal computers and word processors, have coils wound around a laminated core that is an iron core. In doing so, insulating performance is enhanced by covering the laminated core with an insulator made of synthetic resin.
This is because if the insulator is put on the laminated core in this way, sufficient insulating properties can be obtained without increasing the overall dimensions.

FIGS. 4 and 5 show a motor core to which the present invention is applied. The core 1 is for a four-pole motor, in which four pole columns 3 are radially spread from a center portion 2 and a magnetic pole portion 4 is formed at the tip (outer periphery) thereof. Reference numeral 5 denotes a hole for inserting a rotating shaft. As shown in FIG. 5, a large number of cores 1 having such a front shape are laminated to form a laminated core 6.

FIG. 6 shows an insulator 7. This insulator 7 is manufactured by synthetic resin molding and has a front shape as shown in FIG.
-A cross section and BB cross section have shapes as shown in Figs. 7 and 8. This insulator 7
As will be described later, since the laminated core 6 is covered so as to cover it from one side, the central portion 8, the four pole columns 9, and the magnetic poles formed at the tips (outer peripheral portions) of the respective components are formed. A bent portion 8a, 9a, 10a is formed at each edge of the portion 10. These bent portions 8a, 9a and 10a cover the laminated core 6 from one side thereof. FIG. 9 shows a state in which the laminated core 6 is covered from both sides.

[0005]

Since the insulator used in this manner is a thin resin molded product having a thickness of 0.3 to 0.5 mm, its dimensions may slightly change due to thermal distortion during molding and the like. . Also, because it is thin, if you try to insert it forcibly, the insulator will be deformed,
It has become difficult to stably insert the laminated core. For this reason, automatic insertion by a machine is considered to be difficult, and conventionally, an operator manually performs an operation.

The present invention has been made in view of the above, and an object of the present invention is to provide a device for inserting an insulator into a motor iron core, which can stably insert the insulator into a laminated core.

[0007]

According to the present invention, as a means for solving the above-mentioned problems, a motor support plate and an insulator guide shaft support plate are protruded laterally from a column which moves up and down a predetermined stroke, and the motor support plate is provided. The motor is mounted so that its output shaft is oriented vertically, an eccentric cam is fixed to the output shaft, and the insulator guide shaft support plate has an intermediate portion of the insulator guide shaft for holding the insulator at the lower end. The upper end of the insulator guide shaft is supported on one end of a swing bar via a bearing, the other end of the swing bar is forked, and the eccentric cam is gripped by the forked portion. And a mechanism that changes the degree of swing of the swing bar by the resilience of a spring between the swing bar and the swing bar.

In the above structure, a swing transmission plate having one end fixed to the insulator guide shaft is disposed in parallel with the swing bar, and the other end of the swing transmission plate has a swing direction toward the swing bar. A spring, the compression transmission state of which is changed by advancing a screw, is provided in the hole portion of the swing bar by projecting the motion transmission shaft so as to penetrate a hole provided in the swing bar, and the swing force is generated by the spring force of the spring. A mechanism is provided in which a spring shaft protruding in the direction of pressing the transmission shaft is provided to change the swinging degree of the swinging bar.

Further, in the above structure, a spring provided in a portion of the hole of the rocking bar, the compression state of which can be changed by the advancement of the screw, and a projecting direction in which the resilient force of the spring presses the rocking transmission shaft. And two pairs of spring shafts are provided so as to face each other in the diameter direction of the hole of the rocking bar, and the rocking transmission shaft is sandwiched between the two spring shafts of the two sets of mechanisms to thereby rock the rocking bar. It is a mechanism that changes the degree.

[0010]

With this configuration, when the insulator is inserted into the laminated core, the insulator can be inserted into the laminated core while slightly swinging in the circumferential direction of the insulator, so that the insulator can be inserted by hand. As a result, the insulator can be inserted quickly and stably without applying excessive force to the insulator.

[0011]

FIG. 1 shows an embodiment of the present invention. Reference numeral 11 denotes a column, which moves up and down a predetermined stroke S with respect to a base (not shown). A motor support plate 12 and an insulator guide shaft support plate 13 protrude from the support 11 toward the side. A motor 14 is mounted on the motor support plate 12 so that an output shaft 15 thereof is oriented in a vertical direction. An eccentric cam 16 is fixed to the output shaft 15. The eccentric cam 16 will be described later.

The insulator guide shaft support plate 13 is provided with a hole 17 near the front end thereof. The insulator guide shaft holding the insulator 7 at its lower end is formed in the hole 17.
The middle part of 18 is loosely fitted. A work table 19 is provided below the insulator guide shaft 18, on which the laminated core 6 into which the insulator 7 is inserted is mounted. The upper end of the insulator guide shaft 18 is supported by one end of a swing bar 21 via a bearing 20.

As shown in FIGS. 1 and 2, the swing bar 21
A circular hole 22 is formed substantially in the center of the hole 22. A swing transmission shaft 23 passes through the center of the hole 22 concentrically. As shown in FIG. 1, the lower end of the swing transmission shaft 23 is fixed to a swing transmission plate 24 arranged in parallel with the swing bar 21. The swing transmission plate 24 is integrally attached to the insulator guide shaft 18 described above. A swing degree variable mechanism between the insulator guide shaft 18 and the swing bar 21 is interposed in the hole 22 portion, and this portion will be described later.

As shown in FIG. 1, the swing bar 21 is bent in a crank shape at an intermediate portion, and a portion beyond the bent portion is formed in a forked portion 25. And this forked part 25
Thus, the eccentric cam 16 fixed to the output shaft 15 of the motor 14 is gripped. With this mechanism, the motor 14 operates and the eccentric cam 16 fixed to the output shaft 15 rotates eccentrically,
The swing bar 21 rotates around the insulator guide shaft 18 by an angle θ (see FIG. 2).

Next, a mechanism interposed between the insulator guide shaft 18 and the swing bar 21 for changing the degree of swing of the swing bar 21 by the elastic force of the spring will be described in detail. FIG.
Is an enlarged cross-sectional view taken along the line CC in FIG. The configuration of this portion is such that two sets are provided symmetrically about the swing transmission shaft 23 in the diametrical direction of the hole 22 so as to face each other. Therefore, the same reference numerals are given to the left and right equivalent parts. The swinging bar 21 is provided with a screw hole 26 and a hole 27 communicating therewith.A screw 28 is screwed into the screw hole 26, and a compressed spring 29 is inserted into the hole 27. A spring shaft 30 urged by a spring 29 to project toward the swing transmission shaft 23 is mounted. Symbols in the figure
The reference numeral 31 indicates a set screw.

The insulator insertion device having such a configuration is used as follows. That is, the laminated core 6 is placed on the work table 19 as shown in FIG. 1, and the insulator 7 gripped by the lower end of the insulator guide shaft 18 is positioned at the upper part. In this state, the support 11 is lowered by a predetermined stroke so that the insulator 7 comes into contact with the upper surface of the laminated core 6. Insulator 7
Is brought into contact with the upper surface of the laminated core 6, the lowering speed of the column 11 is slowed down, and the motor 14 is operated.

When the motor 14 operates, the eccentric cam 16 is fixed to the output shaft 15 and rotates eccentrically. Then, the swing bar 21 gripping the eccentric cam 16 at the forked portion 25 rotates by the angle θ (see FIG. 2) about the insulator guide shaft 18. This rotation is not transmitted to the insulator guide shaft 18 via the bearing 20, but is transmitted via the swing transmission shaft 23 and the swing transmission plate 24.

In this case, since the swing transmission shaft 23 is in contact with the forked portion 25 of the swing bar 21 via the eccentric cam 16, the motor 14 operates and the eccentric cam 16 fixed to the output shaft 15 thereof. When eccentrically rotates, the swing bar 21 rotates about the insulator guide shaft 18 by the angle θ (see FIG. 2). This angle θ loosens the set screw 31,
When the screw 28 is rotated to advance and retreat through the screw hole 26, the degree of compression of the spring 29 changes, so that the force for holding the swing transmission shaft 23 of the spring shaft 30 changes, so that it can be set arbitrarily. That is, if the degree of oscillation is to be increased, the screw 28 may be fed, and if the degree of oscillation is to be decreased, the screw 28 may be pulled out. When the adjustment is completed, tighten the set screw 31 to lock.

When the insulator 7 is rocked in this manner in a state where the insulator 7 is in contact with the laminated core 6, the insulator 7 is moved to an initial state in which the insulator 7 is inserted into the laminated core 6.
Is inserted without difficulty. This is in a state similar to that of a manual insertion by a worker, and is easily performed. The swing of the swing bar 21 after the insertion is performed is such that the spring 29 expands and contracts and the spring shaft 30 absorbs the swing, so that the insulator guide shaft 18 does not swing. The attachment of the insulator 7 to the laminated core 6 is completed by performing the same operation twice on both sides of the laminated core 6 continuously.

[0020]

Since the present invention is an insulator insertion device configured as described above, the work of attaching the insulator to the laminated core, which has conventionally been performed manually by a worker, can be efficiently performed by a dedicated machine. In addition to the quick operation, there is an effect that the insulator is not damaged as in the case of manual operation.

[Brief description of the drawings]

FIG. 1 is a front view partially showing a cross section of an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 viewed from above.

FIG. 3 is a sectional view taken along line CC of FIG. 2;

FIG. 4 is a front view showing a motor core.

FIG. 5 is a side view of the laminated core.

FIG. 6 is a front view of the insulator.

FIG. 7 is a sectional view taken along the line AA of FIG. 6;

FIG. 8 is a sectional view taken along the line BB of FIG. 6;

FIG. 9 is a side view showing a state where insulators are mounted on both surfaces of the laminated core.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core 6 Laminated core 7 Insulator 11 Post 12 Motor support plate 13 Insulator guide shaft support plate 14 Motor 15 Output shaft 16 Eccentric cam 17 Hole 18 Insulator guide shaft 20 Bearing 21 Swing bar 22 Hole 23 Swing transmission shaft 24 Swing transmission Plate 25 Bifurcated part 26 Screw hole 27 Hole 28 Screw 29 Spring 30 Spring shaft

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-59-136048 (JP, A) JP-A-3-74154 (JP, U) JP-A 52-12081 (JP, Y1) (58) Field (Int.Cl. ⁶ , DB name) H02K 15/10

Claims (3)

(57) [Claims] 1. A motor support plate and an insulator guide shaft support plate protrude laterally from a column which moves up and down a predetermined stroke, and a motor is mounted on the motor support plate such that an output shaft thereof is oriented vertically. An eccentric cam is fixed to the output shaft, and an intermediate portion of the insulator guide shaft for holding the insulator at the lower end is loosely fitted to the insulator guide shaft support plate. One end is supported, the other end of the swing bar is forked, the eccentric cam is gripped by the forked portion, and the swing bar is provided between the insulator guide shaft and the swing bar by the elastic force of a spring. An insulator insertion device into the motor core, characterized by interposing a mechanism to change the degree of swing of the motor. 2. A swing transmission plate having one end fixed to an insulator guide shaft is disposed in parallel with the swing bar, and the other end of the swing transmission plate has a swing transmission shaft directed toward the swing bar. By projecting a hole provided in the rocking bar and penetrating the hole, a spring whose compression state can be changed by the advancement of a screw is pressed into the hole of the rocking bar, and the rocking transmission shaft is pressed by the spring force of the spring. 2. A device for inserting an insulator into a motor core according to claim 1, wherein a mechanism for changing the degree of swing of the swing bar is provided by providing a spring shaft projecting in the direction of rotation. 3. A spring, which is provided at a portion of the hole of the rocking bar and whose compression state can be changed by advancing of a screw, and a spring shaft protruding in a direction of pressing the rocking transmission shaft by a resilient force of the spring. Are provided in the oscillating bar so as to oppose each other in the diameter direction of the hole, and a mechanism for changing the degree of oscillating of the oscillating bar by sandwiching the oscillating transmission shaft between two spring shafts of the two sets of mechanisms. The insulator insertion device according to claim 1, wherein the insulator is inserted into the motor core.