JPS59156384A - Speed reducer of electric washer - 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] Field of use in M industry The present invention relates to a speed reduction device for an electric washing machine.

Conventional structure and its problems The planetary gear reduction device conventionally used in household electric washing machines transmits the power of the drive motor to the rotor blades, so the combined ga
(For BN, materials with high physical strength (for example, glass-containing polyester resin) were used. However, materials with high physical strength required high material costs, and there was a problem in reducing the cost of components of the speed reduction device.

OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks by using a material with comparatively weak physical properties and changing its shape. The purpose is also to enable it to be used as a reduction gear for JJ m.

In order to achieve the above object, the speed reduction device for an electric washing machine of the present invention is provided with a rotary blade at the center lower end of an inner tub for washing and dewatering, and an outer tub on the outside of the inner tub. The lower end side of the rotary R shaft connected to the rotary blade is connected to the output side of a planetary gear reduction gear consisting of a sun gear, a planetary gear, an internal gear, a support frame, and a support, each of which is made of synthetic resin. In an electric washing machine, a pulley that receives rotation of an electric motor is attached to the lower end of the shaft of a thick gear that is connected to the input side of the planetary gear reduction device, and a plurality of pulleys are provided on the support frame of the planetary gear reduction device. The support body fixed to the pillar part is provided with hanging ribs that sandwich the pillar part.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, (1) is the outer box, (2) is the top plate that covers the top of the outer box (1), and inside this top plate (2) are the control parts (water level switch, water supply valve, time switch) etc.) are stored and arranged. (3) is an upper rim 3 lid, which is pivotally supported on the top plate (2) so as to be openable and closable.

(5) is an inner tank for washing and dewatering with a small hole of 1° in the side wall, and an outer tank' (4) has a slider (4) on the outside of this inner tank (5).
6) It is suspended and supported via a suspension rod (7) by a buffer tube (8) containing an anti-vibration spring (not shown). Also, the said secret agent (
5) is connected to the inner tank cylinder shaft (IQ) via the flange (9) provided on the lower Ctrj part.This inner tank cylinder +M
A hollow brake drum (lυ) is fixed to the lower end of the 00, and a drum holder (6) having 7 parts at the upper end and a spline shape at the lower end is attached to the brake drum i by the flange. A large pulley (to) for dewatering is attached to the lower end of the drum support (2), and is connected to the electric motor OQ for dewatering via belt α4) and a small pulley (to). has been done. The inner tank cylinder 4-0 and the drum support are supported by a bearing cover αη and a bearing case.

The bearing cover aη and the bearing case 0 fathom are fixed to the bottom plate 09, and the bottom plate 09 is fixed to the bottom of the outer tank (4). (a) is 4 yen! '(5) The rotor blade is located at the lower end of the center, and the rotor blade @eυ is fixed to the rotor blade and is arranged concentrically with the inner tank cylinder axis α0, and the lower end of the rotor blade @eυ is the brake A support frame (property), which is attached to a support (support) of a planetary gear reduction device provided in the drum αυ and rotatably houses the planetary gear (Ao), is fixed to the support (a).

(to) is an internal gear, which is mounted and fixed by a pin protruding from the flange of the drum receiver. Note that the support (a),
The inner gear (2), the support frame, and the planetary gear (c) are all made of synthetic resin 1. The pulley ♂ that engages concentrically with the cylindrical part of the drum receiver ♂ has a sun gear at its upper end. The lower end is connected to a large pulley for washing through the collar (A).
It is connected and fixed to (c) with four nuts. The large pulley for washing (H) is connected to a 72-movement H3 TSA exclusively for washing via a V-belt (7) and a small pulley C (11).

The planetary gear reduction mounting will be explained in more detail based on FIGS. 7 to 12.
The lower end of the gear pin 14η is inserted into 24a). Gear pin ← A planetary gear (E) is installed on the force, and this gear pin! The upper end of 47) is inserted into the fourth part (22a) of the support (a). The planetary gears (c) are equally spaced on the inside. Also, the planetary gear (a) is the gear pin mentioned above! A bearing hole (25a) for supporting 47i and a seat surface (25b) are formed at the lower end of this bearing hole (25a). A plane part (28a) is formed on the upper surface of the lower part of the internal gear (2), and a groove part (281)) is formed in the plane part (28a) in an annular shape. It is in a positional relationship where it drips with the seat surface (25b) of the planetary gear (1). The groove (
A solid lubricant such as grease is adhered to 28b), and the planetary gear (c) rotates around the gear pin (471) due to the rotation of the thick wheel (on the pulley), and It revolves inside the gear (to). At this time, the grease in the groove (23b) is applied to the seat surface (25b).
) is applied evenly to smooth the rotation of the planetary gear @,
The four parts of the sound caused by the rotation of the planetary gear (c) and the seat surface (25b)
can prevent fan wear.

On the other hand, in the i-Japanese support frame 1, a plurality of substantially four-width column-shaped pillar parts (24b) are formed between the four parts (24a),
A cylindrical shaft portion (24c) is formed at the upper end of each column portion (24b). This throat c) is a hole (2) formed at a position corresponding to the axis M (24c) of the front J-pi support □□□.
2b) and fixed by means such as welding. - Also, on the bottom surface of the support (goods) there is a shaft (2) as shown in Figure 10.
4C) is inserted into the hole (22b), and a hanging rib (22c) is formed to sandwich the column (24b). By the way, in the case of a speed detection device for a rotary blade for washing, the load torque applied to the rotary blade varies depending on the type of cloth and the amount of cloth to be washed, and since the rotary blade is a cleaning method that repeats reversal motion, the above-mentioned multiple : The load must be received by l/i pillars b), and if the shaft part (24c) alone is to receive the load, the detail (24c) is The outer diameter of the component must be increased or an expensive resin material with high strength properties must be used, and the unit cost of the component parts increases. However, by bringing the hanging ribs (22c) of the 1 m long support body into contact with the pillars (24b), it is possible to measure the strength of the support frame and the support body (a) after they are attached.

A large pulley for dewatering (1, 1) is equipped with a drum holder (6) connected to the inner tube sleeve (11), and cylindrical ribs (TAA) (TAB) are formed on the upper and lower sides. The rib (18a) is formed to have a larger inner diameter than the outer diameter of the lower cylindrical part of the bearing case agi, and prevents grease etc. dripping from the bearing from scattering onto the V-belt (14 part).

Also, the lower 'Ij'l of the lower cylindrical rib (13i) is removed 7
The large pulley (C) for washing, which is located below the large pulley 03 for bathing, is located below the upper end of the recess on the upper surface of the recess. 03) is a brake band, one end is supported on the brake shaft, and the other end has a small hole (3) for attaching a screw I.
3a) and a seat surface (31b) are formed, and the lower part and the lower part 13 are bent into an L shape. (88c) is folded at the bend. The brake band (33) is wound around the brake drum oi), and the bent portion (38c) is engaged with the square hole (18a) formed in the parapet of the bearing case α~, and the mounting bolt At (to), the screw hole (18b) is fixed. The lock is an actuating lever, the tip part d of which is supported together with the brake band 03) relative to the brake +i'qi+t3t9. The actuating lever shaft has a flange (8
6a) is formed, and this operating lever shaft, 4, is formed in the small hole (18c) formed in the upper flange of the barrel of the bearing case α and the bent part of the body wall of the barrel of the bearing case A. Small hole (1
Both upper and lower ends are penetrated and supported by the front SC small hole (18C).
), a coiled spring and an actuation lever, and a cylindrical receiver (40) is disposed below it. Also, at the attachment part of the operating lever shaft m, this work i2
The upper end of the Colleper is in contact with the lower surface of the bearing cover (17) which is in contact with the lower part of the bottom plate 4, and the upper end of the flange (36a)
The bearing case is received by the upper flange of the base plate, and it is completely fixed so that it cannot be removed when the bottom plate, four parts, the four parts, and the bearing case, Q part, are attached. Moreover, one end of the helical spring shield η is in contact with the body of the bearing case α, and the other end is in contact with the body of the bearing case α.
．． M is engaged with the actuating lever, and when the brake is activated, the brake liner (3) is fixed to the brake drum αη.
The actuating lever (to) is urged so that braking force is generated during washing and spin-drying. Furthermore, the helical spring (3'71) is tightly wound, and is activated by bringing the upper end into contact with the lower surface of the upper flange of the bearing case Ua and engaging the lower end with the operating lever 08. The lever (c) is suppressed downward (a configuration), and the vertical wobbling of the operating lever state satisfies W <L'.

The braking force of the brake drum Ql) during dehydration is P′:n
When (5) stops rotating, and when the bathing rotor (E) is rotating, the inner guide (5)
This is necessary to prevent rotation in the same direction as 7). Conversely, when it is necessary to release the braking force, use 1. One of them (5) has to be removed due to dehydration. (44) is a solenoid, which separates the $U power release and drain valve at the time of fig, and is also necessary during the non-aqueous process::;d
Intuition is #bathed. To release the braking force, when the solenoid (44) is energized, the plunger (44a) is sucked, and the actuating piece 0 and the actuating piece θη connected to the plunger (44a) by a pin are actuated. The operating metal fitting is fixed so that its relative position to the lever acid can be adjusted freely.
The actuating lever (3 clauses) is moved to release the braking force between the brake band and brake drum 0. At the same time, the drain valve (44) is also moved to allow water to pass through. The feature is during operation (when applying braking force)
The Q sound is relatively quiet due to its structure, and the difference between the braking force on the winding side and the braking force on the anti-winding side is large. When stopping the rotation of the inner tank during spin-drying, there is no problem as long as the direction of rotation of the inner tank during spin-drying and the winding direction of the brake band are the same.However, when washing, the rotor blades generally rotate left and right. In order to reverse the rotation, the braking force on the side opposite to the winding direction of the brake band must be set to be greater than the force that causes the rotor to rotate the inner tank via the rotary blade (+fj).The side opposite to the winding direction One way to improve the braking force is to increase the surface pressure between the brake drum and brake liner during braking.One way to increase the surface pressure is to increase the surface pressure between the helical spring C171 brake and the operating lever shaft. Dimensions and actuation lever @l
1taia and the actuation metal fitting (1) that comes into contact with the actuation lever (c).
, 1, the suction force of the solenoid circle must be increased. However, if the suction power of the solenoid is increased, the cost will be high and the shape will be large, so it is not a good method.Also, due to the limited space, the actuating lever shaft and the operating metal fitting of the actuating lever come in contact with the T. In order to increase the contact pressure between the brake drum and the brake liner under such conditions, it is necessary to increase the size of the part between the brake shaft □□□ and the operating lever By reducing the size, γ'Ti
Wi=lever'! The ratio of the dimension I#tl of 'Ji i3Q and the operating metal fitting that comes into contact with the operating lever example and the above-mentioned dimension is increased, and this can be accommodated. However, if the solenoid (4 force, 4 force/: stroke is a part), the movement dimension of the brake band when applying the braking force becomes smaller, If the brake drum (IJ and brake liner example) do not separate completely due to variations, etc., and come into contact with a part of the outer circumference of the brake drum, we will order it.

If such a situation occurs, problems such as abnormal noises caused by the brake drum and brake liner rubbing against each other during rolling, and poor performance due to heat generated by the brake liner will occur.

So brake liner (goods) and brake drum (b)
In order to secure the distance between the brake bands, one end of the brake band should be fixed to reduce the wobbling of the installation, and at the same time, a small hole should be made around the body wall of the bearing case (G) corresponding to the brake band @katsu. A brake band abutment member made of synthetic resin and having a substantially conical shape and having a concave portion in the center from the tip is attached to the small hole from the side.

The tip of the brake band contacting tool is close to the brake line, and even if the brake band is slightly moved when the braking force is released, the brake band contacting tool will contact the brake band (3) and the brake band contact will be removed. Due to the concave portion in the center of the tool t46), the tip size thereof changes appropriately, and it is possible to ensure an even gap between the brake lie and the brake drum αρ.

Most of the components of the one-tub type dehydrating laundry handle of the embodiment described above are attached to the bottom of the outer tub (4) and the bottom plate 0I fixed to the bottom of the outer tub (4). Also, foreign demand (4) is the outer box (
1) Since it is supported in suspension, the center Q of the outer tank (4)
If it is not balanced horizontally, the outer tank (4)
The gap between the and outer box (1) is not uniform on the inside of the four sides,
Dehydration start time During dehydration operation, an inconvenience occurs when the outer tank (4) hits the outer box (1). As a countermeasure for this, we changed the mounting positions of the dehydration electric machine αQ and the electric washing iron to a dehydration electric machine that is lighter in weight than the heavy electric laundry electric machine (3'4 and installation dimensions from the center). I set A>B so that the PC and the mounting dimension from the center are larger. Furthermore, in order to improve the balance, the installation dimension (C) from the center of the solenoid 04) is also provided on the dehydration-specific grip 00, so that the planar center of gravity of the outer tank (4) is approximately equal to that of the outer tank (4). You can become centered and have better balance.

Effects of the Invention As described above, according to the present invention, the planetary tJ table and the "i" number of pillars of the support frame of the speed control device are sandwiched (the support is provided with hanging ribs). Due to the cheap synthetic JJ
Even if parts made of B are used, the necessary mounting strength can be obtained, and a small and inexpensive reduction gear can be provided.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a vertical cross-sectional view of the washing crystal, FIG. 2 is an enlarged cross-sectional view of the drive section, FIG. 3 is a rear view, and FIG. 4 is a view of the bearing case section. 5 is a sectional view of the brake band abutting tool q), 61 is an exploded perspective view of the other end attachment part of the brake band, and 7 is a plan view of the planetary gear reduction display.
Figure 8 is a section 2j sectional view of the same essential parts, Figure 9 is an enlarged perspective view of the pillar part of the support frame, Figure 10 is a sectional view of the joint between the support frame and the support body, and Figure 11 is the planetary spout. FIG. 12 is an enlarged perspective view of a main part of the internal gear. (1)...outer box, (4)...external demand, (5)...inner tank, 0Q...inner tank shaft, (L])...brake drum, @...drum Reception, 03...Large pulley, Uku.
... V-belt, (15 ... small pulley, αQ ... dehydration - road electric motor, kiln ... rotating blade, Akira ... rotor blade shaft, ) ... support body, ( 22c)...Drooping rib, @
...Internal gear, I24I...Support frame, (24b)
...Column part, (24c') ...Shaft part, 2) ...Planetary gear, ■ ...V-Lee shaft, (c) ...Large pulley, both ...V-belt, )...Small pulley, (2)...
Washing electric motor agent Yoshihiro MorimotoFigure 1Figure 2Figure 3Figure 4Figure 4Figure 5Figure 2Figure 7Faya

Claims (1)

[Claims] 1. A rotary blade is provided at the center lower end of the inner tank for washing and dewatering, an outer tank is provided outside the inner tank, and a sun-table and each Connected to the output side of a planetary gear reduction device consisting of a 1J star gear made of synthetic resin, a shaved XJ wheel, a support frame, and a support body, and attached to the lower end of the sun fan which is the input side of the planetary gear reduction device. In an electric washing machine equipped with a pulley that receives electric rotation, the support of the planetary gear reduction device also includes hanging ribs that sandwich the pillars on a support fixed to a plurality of pillars provided on the frame. The installed electric washing, so-called speed reduction device.