JPS6041808Y2 - Motor with built-in electromagnetic coupling device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a model having a built-in electromagnetic coupling device that can be easily attached by modifying a standard model that is generally available on the market.

In this type of conventional model, when modifying a standard model to a model with a brake by installing an electromagnetic coupling device, such as an electromagnetic brake, a separately arranged relay shaft (fin shaft) is connected to the model shaft of the standard model by welding. After that, the hub of the electromagnetic brake is fitted onto the model shaft to tightly contact the electromagnetic brake, and the cooling fins are further fixed to the relay shaft.

However, problems arise due to the weak strength of the welded portion between the mold shaft and the relay shaft, and distortions occur in the mold shaft and the relay shaft during welding, which requires time and effort to correct.

Furthermore, when attaching the electromagnetic brake to the bracket of the model, the end face of the bracket was machined and the electromagnetic brake was attached to that machined surface.

This cost a considerable amount of time and money.

This invention was devised in view of the above-mentioned circumstances, and is intended to allow an electromagnetic coupling device to be attached to a standard model by a simple means.

Below, FIG. 1 and FIG. 2 will be explained in detail.

That is, Fig. 1 shows a partial cross-sectional view of a standard model commonly available on the market, where 1 is the model shaft, 2 is the case, and 3 is the model shaft.
Reference numeral 4 denotes a bracket for pivotally supporting the mold shaft, and 4 a bearing for supporting the mold shaft 1, which is fixed to the bracket 3.

5 is a fin fitted to the shaft end 1a of the model shaft 1, 6 is a cover fitted to the bracket 3, and has a large number of ventilation holes 6a.
is formed.

Fig. 2 shows the above-mentioned standard model modified and equipped with an electromagnetic brake. 7 is a plate, 7a is a hole provided in the plate into which a braking adapter 8 is inserted, and the braking adapter 8 is connected to the bracket 3. Fixed.

9 is an armature, and 10 is a brake pin fixed to the plate 7. The armature 9 is configured to fit with the brake pin 10 and to be slidable in the axial direction.

11 is a stator attached to the brake pin 7 through a gap 9 to the armature 8; 12 is a coil built into the stator 11 and fixed with epoxy resin 13; and 14 is a coil between the armature 9 and the stator 11. The inserted spring urges the armature 9 toward the plate 7 to generate braking force.

Numeral 15 is a nut screwed onto the brake pin 10 to fix the stator 11.

16 is a lining, 17 is a hub inserted into the shaft to which the fins 5 of the model shaft 1 are attached, and 18 is a bearing inserted into the outer periphery of the hub 17 to support the stator 11.

Note that the bearing 18 has a structure that also supports the entire electromagnetic brake.

Further, the lining 16 is fitted to the hub 17 so that it can slide in the axial direction but cannot rotate in the rotational direction.

Furthermore, the fins 5 are fixed to the hub 17.

To explain the operation of the device configured as described above, first, when the coil 12 is not energized, the armature 9 is pressed toward the lining 16 by the pressing force of the spring 14, so the lining A braking force is applied to the shaft 16, so that the mode shaft 1 is stopped from rotating via the hub 17.

Next, when the coil 12 is energized, a magnetic flux Φ is generated in the magnetic path shown by the dotted line, and the armature 9 is attracted toward the stator 11 against the spring 14.

Therefore, the braking force of the lining 16 is released, and at the same time, the moder shaft 1 becomes rotatable.

The gist of the present invention in a brake-equipped modele that repeats rotation and braking as described above is as follows.

That is, the purpose of this brake-equipped model is to easily attach an electromagnetic brake to a standard model.

Conventionally, in order to attach the hub 17 and the fins 5, it was necessary to lengthen the model shaft 1 in the axial direction via a relay shaft.
As mentioned above, welding was used as a method for this purpose.

However, when welding, distortion occurs in the mold shaft 1 due to welding heat, which makes corrections time consuming and expensive.

Furthermore, since power was transmitted, mechanical strength became an issue, and special attention had to be paid to quality.

Furthermore, in order to attach the plate 7 to the bracket 3, the end face of the bracket 3 was processed and finished using a lathe so that it became a flat surface.

In view of the above, this idea uses the hub 17 of the electromagnetic brake to attach the fin 5, and since the electromagnetic brake itself has a built-in bearing 18, the bracket 3
There is no need to directly attach an electromagnetic brake to the vehicle, and the electromagnetic brake can be attached simply by attaching a braking adapter 8 that can withstand braking torque.

Therefore, since there is no need for welding as in the conventional method, the standard model can be used as is, and can be manufactured at low cost, without distortion, and is highly reliable in terms of strength.

Furthermore, the bracket can be manufactured at a low cost because it requires only a screw hole for fixing the brake adapter.

As mentioned above, according to this devised device, an electromagnetic coupling device with a built-in bearing is used, and the stator of the electromagnetic coupling device is supported on the hub, and the fins are fixed, so that almost no standard model can be processed. It can be used as is without any modification, can be manufactured at low cost, and has increased reliability.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a standard model, and FIG. 2 is a partial sectional view of a model equipped with an electromagnetic brake according to the present invention. In the figure, 1 is the model shaft, 3 is the bracket, 5 is the cooling fin, 7 is the plate, 8 is the brake adapter, 9 is the armature, 10 is the brake pin, 11 is the stator, 12 is the coil, 14
1 is a spring, 16 is a lining, 17 is a hub, and 18 is a bearing. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (2)

[Scope of utility model registration request] (1) In a model in which an electromagnetic coupling device is built into a mold having a bracket that pivotally supports a model shaft, a stator is supported via a pivot on a hub coupled to the model shaft of the electromagnetic coupling device. , a pin installed between the stator and the plate, an armature that fits into the pin and is movable in the axial direction, a lining that can rotate integrally with the hub, and a lining that can be moved by moving the armature. The device for controlling the bonding state between the plate and the plate is
and an adapter that is fixed to the bracket and prevents the plate from rotating. (2) A mold incorporating the electromagnetic coupling device as set forth in claim 1, which is a utility model registration, in which the hub is configured with cooling fins attached thereto.