JPS58141191A - Driving device for load - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides loads 1, such as a cock that opens and closes the middle of the drainage path of a washing machine, a clutch that switches between washing operation and dewatering operation,
Furthermore, it relates to a drive device that drives a brake, etc. that stops the dewatering operation, and more specifically, by decelerating and transmitting the rotational force of a small motor.

1- In the structure for driving the load, when it is no longer necessary to drive the load, the output shaft and the reduction gear group are reversed by the biasing force of the spring on the load side to reliably and quickly return to the original state. It is meant to bring you back.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows the structure of a dehydrating/washing machine incorporating a drive device using a small motor. 1 is an outer frame, inside which a water tank 3 is suspended and supported for vibration isolation through a vibration isolator 2. ing. Inside the water tank 3, there is rotatably supported a dewatering/washing tub 6, which has a clothes agitation pulsator 4 rotatably disposed at the center of the bottom.

On the outer bottom surface of the water tank 3, a base plate 8 is disposed to which a main motor 6, a mechanical part 7 incorporating a brake, etc. are fixed. Furthermore, a drain port 9 is formed at the bottom of the water tank 3.
communicates with a cock 1o that opens and closes the water drainage path in the water tank 3. A clutch 11 for switching between a dewatering operation and a washing operation is disposed at the lower end of the mechanism section 7.

Figures 2 to 4 show details of the above drive device, and 1
Reference numeral 2 designates this drive device, which opens and closes the aforementioned cock 1o via an operating frame 13 using its drive output.

Historically, the clutch 11 is switched via the clutch piece 14. It also opens and closes the brake within the mechanism section 7.

The drive device 12 is roughly divided into a small motor 151L and a clutch section 16. Deceleration vehicle group 16. It consists of an auxiliary switch section 17 and an output shaft 18. The output shaft 18 operates the aforementioned operating frame 13 via a joint 19.

Next, to explain the structure and operation of the small Tanabata 16& and the clutch section 16, it is a coil section wound with 20Fi copper wire, etc., and is wound on the bobbin 21. ′! It's there. 22 is an iron core,
A 7-2 shaft 24 is disposed inside the shaft 24, which is rotatably supported by a bearing 23 and slidably in the axial direction.

A rotor (rotor → 26) holding a cylindrical hysteresis link 26 is fixed to one end of the motor shaft 24, and a suction plate 27 made of a magnetic material 1, such as a thin steel plate, is attached to the motor shaft in the same way as the rotor 26. A motor pinion 28 is fixed to the other end of the motor shaft 24, and is freely retractable so as to mesh with a specific gear in the middle of the reduction gear group 16. 2e is a frame of a small motor 15fL, the peripheral edge of which is bent toward the rotor 26 side to form a magnetic pole 3o, and a corner 31 is wrapped around this magnetic pole. , a main pole 33 and a counter pole 34 having a substantially donut-shaped corner cut 32 are fixed to each other via an iron core 22.The iron core 22, rotor 26, and suction plate 27 are separated by a spring 36. The motor pinion 28 is arranged so as to mesh with the first gear 36 of the reduction gear group 16.The rotational force of the small motor 151L is appropriately reduced by the first gear 36 through the gear train. is,
It is transmitted to the main power shaft 1B at low speed rotation and high torque. Therefore, even if the output of the small motor 151L is small, it is 1. Able to operate high-load mechanisms such as , brakes, cocks, etc.

The motor pinion 28 meshes with the first gear 36 because a magnetic field is generated by energizing the coil portion 2o, and the adsorption plate 27
F: This happens when it is attracted to the F/composite pole 33 and 34 side. Third
The figure shows the motor pinion 28.

It is in a state in which it is engaged with the first gear 36, and FIG. 4 shows a state in which it is not engaged in a non-energized state. That is, the clutch portion 16tI′i rotor 26 and suction plate 27
The gears were engaged and disengaged through axial thrust motion. This constitutes a so-called electromagnetic clutch.

37 is a case of the driving device, and the frame 29 described above is
A bearing plate 38 is fixed therein by fitting or the like. The frame 29 and the bearing plate aS support each gear of the reduction gear group 16 together with the small motor 162L and the like. Further, the bearing plate 38 integrally forms a holding part 39 that holds the contact piece of the auxiliary switch part 17.

The front AC cock 1o is attached by fixing the case 40 to the drain 119 provided at the bottom of the water tank 3, as shown in FIG. A valve body 41 is provided in a part of the interior of the case 40.
The force i is in contact with the biasing force of the sgel ring 42 by >1, 1, thereby achieving a closed state. Reference numeral 43 denotes a stopper, and 44 a fitting, which locks the valve body 41 to the operation frame 13. Reference numeral 46 denotes a locking member provided in the middle of the operation frame 13, which corresponds to the clutch piece 14.

FIG. 6 shows the operation of the output shaft 18 and the operation frame 13. The jaw 19 fixed to the end of the output shaft 18 has an arm portion 19&, and this arm portion 191L has a pin. A stepped bolt 46 is fixed.

The operating frame 13 is rotatably attached to the joint 19 by means of the stepped bolt 46.

FIG. 6A shows a state in which the small motor 151L of the drive device 12 is not energized, and the operation frame 13 and the joint) 1
The connection point B of 9 is the position when the valve body 41 of the cock 1o is securely pressed against the valve seat portion.

6 dimensions (
Number 0) At the joining point when moving, join) 19
A stopper portion 47 is provided which comes into contact with the stopper.

When the small motor 161 is energized, the joint snow 9 and the operating frame 13 begin to rotate in the direction of the arrow X, and the notch 48 formed in the - operating frame 13 becomes the opening II+1' exit car 1118 in FIG. The joint 19 moves only in the ai-direction from point B until it comes into contact with point C, and the rotation of the joint 19 stops. At this time, the rotation angle of the joint 19 is set to 18o0 or more.

In state C, the small motor 151LK continues to be energized.This small motor 1sari hysteria/smoke is used, and the coil impedance is set to be high for everyone.5The current during normal rotation and when the small motor rotation is restricted Since the difference in values is reduced, there is no need to worry about motor burnout, etc.
It is set so that it can be used in a state where it is held in a restrained state.

In the state shown in FIG. 6, the valve body 41 of the cock 10 is in the open state, and at the same time the clutch piece 14 is also engaged with the locking member 46.
, the washing machine clutch is in a dehydrated state.
5. , the small motor 16 of the drive 12! When the power supply to L is cut off, the suction plate 27 is separated by the urging force of the spring 36, and the motor pinion 28 is separated from the first gear 36.

The operation frame 13 is activated by the biasing force of the spring 42 of the cock 10 and the spring of the load such as the spring of the brake.
A load is applied to the gears to return them to their original positions, but since the motor pinion 28 and the first gear 36 are separated from each other as described above, the reduction gears from the second stage onwards are reversed. It is important to reduce the resistance during reverse rotation, that is, to reduce the speed during return (opening), instantaneous operation of the brake, accurate operation of the clutch, or strong impact of the valve body 41 in the cock 1o. You will get pressure.

Note that this is a cover provided to cover the opening of the 5ori case 37, which fixes the 49ij joint 19 and the output shaft 18 in a non-rotating state, from which the end of the output shaft 18 extends. 61.52 is the shaft and receiver provided on the cover 60 and frame 29.

It supports the output shaft 1B.

According to the present invention as is clear from the above embodiments.

A motor pinion fixed to the motor shaft of this small motor, a group of reduction gears that reduce and transmit the rotation of the small motor by engaging and disengaging oily gears from this motor pinion, and this motor pinion. Reduction gear group ′°
° The output shaft and the reduction gear group are arranged on the ui force side of the motor and drive the load by the rotation of the output shaft, and when the motor pinion and the gear are separated, the output shaft and the reduction gear group are driven by the biasing force of the spring body on the load side. It has a single reversing port and can quickly and reliably return the load to its original state, and since it utilizes the biasing force of the load spring, the biasing force of a separate spring is applied to the output shaft and reduction gear group. There is no need to create a complex structure that allows the robot to operate, which simplifies assembly man-hours and improves reliability of operation.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a dewatering FK and M machine equipped with a drive device according to an embodiment of the present invention, Fig. 2 is a plan view schematically showing the rotation reduction structure of the drive device, and Fig. 3 is a drive unit of the same drive device. Figure 4 is a longitudinal cross-sectional view showing the operating state of the device, Figure 4 is a vertical cross-sectional view showing the valve-directing operating state, Figure 6 A mainly shows the linkage structure between the drive device and the drain cock, Front view, same figure (B)
6 shows the output shaft and operation frame of the drive device, FIG. A plan view showing the same figure,
(c) is a longitudinal sectional view corresponding to (a) of the same figure. . 12... Drive device, 161L... Small motor, 16... Reduction gear group, 18...
・Output shaft, 28...Motor pinion, 36...
...1st gear, 42... Spring (spring body). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3 Figure 4 Figure 5al

Claims (1)

[Claims] A small motor, a motor pinion fixed to the motor shaft of the small motor, a group of reduction gears that have gears that can be engaged with and disengaged from the motor pinion and that reduce and transmit the rotation of the small motor, and an output of the group of reduction gears. The output shaft is arranged on the side and drives the load by its rotation, and the output shaft and the reduction gear group can be reversed by the biasing force of the spring on the load side when the motor pinion and the gear are separated. Load drive.