JPS5932133B2 - Electric cooker speed reducer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric cooking appliance that uses a rotatable reduction gear and further changes the direction of rotation of an electric motor to obtain a high-speed rotation function and a low-speed rotation function.

That is, a high-speed rotation function is obtained by directly rotating the reduction gear itself using the rotation from the electric motor, and a low-speed rotation function is obtained by fixing the rotation from the electric motor through the reduction gear itself.

An embodiment of the present invention will be described below based on the drawings.

1 is an electric motor, 2 is a small pulley fixed to the shaft of electric motor 1,
4 is a dog pulley, which is connected to a small pulley by a belt 3.

Further, the dog pulley 4 is connected to a driven shaft 5, and this driven shaft 5
is rotatably held by an axle stand 17, and this driven shaft 5 holds a reducer case 8 in which a reduction gear is housed via a one-way rotary clutch 6, and a sun gear 7 of the reduction gear is held at its tip. is connected to.

Reference numeral 10 denotes an output shaft, which is rotatably held in the reducer case 8, and whose lower end is connected to a planetary gear of the reduction gear so that deceleration power can be taken out.

11 is a lower connector fixed to the upper end of the output shaft 10, and an upper connector 12 fixed to the lower end of the main shaft 13 of the container 9.
It is removably mated with.

That is, the container 9 is detachably attached to the main body 15, and the main shaft 13 of the container 9 obtains rotational force from the main body 15 by fitting the lower connector 11 and the upper connector 12.

Although not shown, a cooking attachment is fitted onto the main shaft 13.

14 is a lid that covers the upper opening of the container 9.

16 is a rotary set changeover switch for switching between high-speed rotation and low-speed rotation, 18 is a base on which the electric motor 1, etc. is held, and 19 is a power switch.

Now, 20 is a fixing device for fixing the reducer case 8 that houses the reduction gear held on the driven shaft 5 via the one-way rotation clutch 6, and this fixing device is attached along the outer circumference of the reducer case 8. A contact piece 21 is provided, and an operating piece 22 is provided which is bent outward from the rotational torque direction of the reducer case (in the direction of arrow C, which will be described in detail later) of the contact piece 21. The side of the piece 21 is pivotally supported so that the abutting piece 21 can freely rotate so as to come into contact with and separate from the reducer case 8, and the abutment and separation are made in contact with the end of the operating piece 22. This is done by a cam 23 linked to the changeover switch 16.

24 is an elastic member such as rubber attached to the surface of the abutting piece 21, and 25 is a spring that always urges the abutting piece 21 toward the reducer case 8 side so as to follow the operation of the cam 23. It has become.

Next, the operation of the above configuration will be explained.

First, in order to obtain the high-speed rotation function, when the changeover switch 16 is set to high speed, the cam 23 causes the reduction gear fixing device 20 to
is separated from the reducer case 8, and when the power switch is turned on, the electric motor 1 rotates in the D direction (forward rotation direction).

The rotation is transmitted to the driven shaft 5 via the small pulley 2, belt 3, and dog pulley 4, but the fixing device 20 is separated from the reducer case 8 in which the reduction gear is housed and fixed, as described above. This reducer case 8 is rotatable and
A one-way rotating clutch 6 is interposed between the driven shaft 5 and the driven shaft 5, and since the clutch 6 is in the locking direction during forward rotation, the reducer case 8 rotates in the B direction as the driven shaft 5 rotates and remains as it is. Output shaft 10, lower connector 11 without deceleration
, upper connector 12, and main shaft 13.

Since a cooking attachment is attached to the main shaft 13, predetermined cooking can be performed.

Next, to obtain the low-speed rotation function, set the selector switch 16 to low speed, the cam 23 brings the fixing device 20 into contact with the reducer case 8, and when the power switch 19 is turned on, the motor 1 moves in the E direction. (reverse rotation direction).

The rotation is transmitted to the driven shaft 5 via the small pulley 2, belt 3, and dog boot 14, and the reducer case 8 is brought into contact with the fixing device 20 and is in a fixed state. One-way rotation clutch 6 interposed between driven shaft 5
is in the release direction (direction A) in reverse rotation, so the driven shaft 5
The rotation is reduced in speed and transmitted to the output shaft 10 via a reduction gear made up of a sun gear 7 and a planetary gear, and further transmitted to the lower connector 11, the upper connector 12, and the main shaft 13.

At this time, as shown in FIG.
This is done at the tip in the direction of the reaction rotational torque (direction of arrow C) that occurs in the reducer case 8 when it is rotated in the A direction, and a gap 26 is formed at the rear, and the tip is fixed to the center X of the reducer case 8. It is located on or near a straight line connecting the shaft fulcrum Y of the device 20, and is configured so that the contact piece 21 can obtain a contact force in the direction F around the shaft fulcrum Y in response to the reaction rotation torque C of the reducer case 8. That is, the contact piece 21 is only brought into contact with the cam 23, and this contact fixing force is obtained by the reaction rotation torque C.

Therefore, if the reaction rotation torque is large, a large fixing force can be obtained.

As described above, the speed reduction device for the electric cooker of the present invention uses the rotational reaction torque of the speed reducer as it is to fix the speed reducer, so if the torque is large, the contact fixing force becomes large, so it is reliable. It is expected that it will be fixed.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an electric cooking appliance employing an embodiment of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is a plan view showing details of the main parts. 1... Electric motor, 5... Driven shaft, 6...
...One-way rotation clutch, 8...Reduction gear case, 10...Output shaft, 13...Main shaft, 20...Fixing device, 21 ...Abutting piece, 22...Operation piece, 23...Cam.

Claims (1)

[Claims] 1 Equipped with an electric motor capable of forward and reverse rotation, and a cooking attachment to which the power of the electric motor is transmitted via a speed reducer, the speed reducer is provided with a one-way rotation clutch, and when the electric motor rotates in the forward direction, the power of the electric motor is transmitted in the one direction. A high-speed rotation function in which the speed reduction of the speed reducer is locked by the rotary clutch and the speed is transmitted to the cooking attachment without being decelerated by rotating the entire speed reducer, and when the electric motor is reversely rotated, the one-way rotation clutch is released. In the speed reduction device for an electric cooker that can change speed between a low-speed rotation function in which power transmitted to a speed reducer fixed by a fixed device is decelerated and transmitted to a cooking attachment, the fastening device is used only when the electric motor rotates in reverse. The reducer is fixed, and the fixing device is provided with an abutting piece along the outer circumference of the reducer and an operating piece bent outward from the tip of the abutting piece in the direction of reaction rotation torque of the reducer. One side of the contact piece is pivoted so that the contact piece can come into contact with and separate from the reducer, and this contact is made from the tip of the contact piece in the direction of the reaction rotation torque of the reducer, and a gap is formed at the rear. The abutment of the tip is located on or near a straight line connecting the axis of the reducer and the fulcrum of the fixing device, so that a fixing force can be obtained by the reaction rotation torque of the reducer. Cooker speed reducer.