JPS5840753Y2 - Dendo Souchi - Google Patents

Description

[Detailed description of the invention] The present invention is an electric device, in which a motor case and a battery case are fitted together and integrated, and a power circuit is turned on and off by relative rotation of both cases. The present invention relates to an electric device in which the motor case and the battery case are tightly fitted together.

In motors for models and toys, the motor case in which the motor is inserted and the battery case in which the battery is inserted are fitted and connected, and the power circuit is turned on and off by the relative rotation between the two cases. It is being turned off.

This type of electric device performs relative rotation between the two cases.
For this purpose, a lever mechanism is provided in which the switch lever is fixed to the end face of the motor with screws, and a notch into which the switch lever is inserted is provided in the bottom of the motor case.

The motor case used in the electric device is generally made of highly elastic synthetic resin.

Among these synthetic resins, a soft and elastic material such as polyethylene may be used for the case.

However, if such a soft material is used, the bottom portion of the motor case after fitting will expand due to the notch, which will weaken the degree of fitting between the two cases and create a possibility that the two cases will separate or fall off.

The present invention is intended to solve the above-mentioned problems, and aims to prevent the two cases from separating or falling off by strengthening the degree of fitting between the two cases.

This will be explained below with reference to the drawings.

Figure 1 is a side sectional view of the entire conventional electric device, Figure 2 is a perspective view illustrating how the switch lever is attached to the end face of the motor inserted into the motor case, and Figure 3 is the conventional electric device. Sectional view of the motor case used in
The figure is a partially cutaway sectional view for explaining the fitted state of the motor case and battery case in a conventional electric device.
The figure shows a perspective view of a motor case used in an electric device according to an embodiment of the present invention, and FIG. 6 shows a partially cutaway sectional view of a motor case used in an electric device according to an embodiment of the present invention.

Figure 1 shows a side cross-sectional view of the entire conventional electric device in which an electric circuit is formed by fitting a motor case and a battery case. The motor case used as materials, 2 is the motor, 3 is the battery case, 4 is the battery, 5 is one terminal metal fitting on the motor side, 6 is the ten terminal metal fitting on the motor side, 7 is one terminal metal fitting on the battery side, 8 is the spring , 1a represents a fitting convex portion of the motor case 1, and 3a represents a fitting recess of the battery case 3, respectively.

FIG. 2 is an exploded perspective view illustrating how a switch lever for rotating the motor case and battery case relative to each other is attached to the end face of the motor inserted into the motor case.

In FIG. 2, 1 and 2 respectively correspond to the numbers in FIG. 1, 9 represents a switch lever, and 10 represents a switch lever mounting screw.

Further, 1b indicates one or more notches made by cutting out the hem of the motor case 1 so that the switch lever 9 can be arbitrarily attached depending on the fixing position of the electric device, and the notches 1b The above-mentioned switch lever 9 is inserted into.

Figure 3 shows a cross-sectional view of a motor case used in a conventional electric device, and numbers 1.1a and Ib in the figure refer to figures 1 and 2.
They correspond to the numbers in the figure.

FIG. 4 is a partially cutaway sectional view showing the fitted state of the battery case 3 and the motor case as shown in FIG. These correspond to the numbers in FIG.

As shown in FIG. 4, the degree of fit between the motor/case fitting protrusion 1a and the battery case fitting recess 3a is weak, so that there is a possibility that both cases may be detached or fallen off.

This is because the motor case notch 1b as explained in FIG. 2 is pushed against the opening of the battery case 3 by some kind of impact and expands.

Figures 5 and 6 show the above notch 1 in consideration of the above points.
11 shows a perspective view and a partially cutaway cross-sectional view of a motor case used in an electric device according to an embodiment of the present invention, in which a bridge-like reinforcing portion is provided so as to straddle the end of b. Reinforcement part is shown.

That is, since the reinforcing part 11 is integrally molded with the motor case 1 so as to straddle the notch in the motor case 1, the notch 1b will not be widened, and therefore the degree of fitting will not be weakened and the motor case The fitting protrusion 1a and the battery case recess 3a are firmly fitted, and there is no possibility that the fitting projection 1a and the battery case recess 3a will become misaligned and come off or fall off as shown in FIG.

As described above, according to the present invention, the motor case and battery case can be easily separated by simply providing a bridge-shaped reinforcing section that spans the ends of the notches on the motor case, which has one or more notches in the hem. This makes it possible to make a strong fit.

Furthermore, when molding the motor case used in the present invention, it goes without saying that it can be easily molded by simply pouring plastic into a mold, and mass production can be achieved.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of the entire conventional electric device, Fig. 2 is a perspective view for explaining the installation state of the switch/lever, and Fig. 3 is a side sectional view of the entire conventional electric device.
The figure is a sectional view of a motor case used in a conventional electric device, FIG. 4 is a partially cutaway sectional view for explaining the fitted state in a conventional electric device, and FIG. 5 is an electric motor according to an embodiment of the present invention. FIG. 6 is a perspective view of a motor case used in the apparatus, and FIG. 6 is a partially cutaway sectional view thereof. In the figure, 1 is the motor case, 1a is the fitting protrusion of the motor case 1, 3 is the battery case, 3a is the fitting recess of the battery case 3, 1b is one or more notches, and 11 is the present invention Reinforcements created by the above are respectively shown.

Claims (1)

[Scope of utility model registration request] The motor case includes a motor case having one or more notches in the hem for inserting the motor, and a battery case for storing the battery, and the outer diameter side of one end of the battery case is the inner diameter of the hem of the motor case. In the electric device, the motor case and the battery case are connected to each other by being fitted on the sides, and a power supply circuit is turned on and off by means of a terminal fitting present in the fitting part by relative rotation of both cases. An electric device characterized in that a bridge-shaped reinforcing portion is provided to straddle the end of the notch formed in the hem portion to prevent the hem portion of the motor case from widening.