JPS59156387A - Drive apparatus of one-tub type 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 the Invention The present invention relates to a drive device for a single-tub household electric washing machine.

Conventional configuration and its problems Conventionally, the drive unit of a single-tub washing machine has a cylindrical sleeve above the brake drum, and a drum support shaft below. A ball bearing was installed in the cover, and a ball bearing was also installed in the lower bearing case. Since the misalignment of the centers of the ball bearings between the upper and lower parts requires precision, the flanges of the bearing cover and bearing case were fixed to each other using multiple screws. There was a problem in that manufacturing costs increased due to doubling the size and increasing the number of assembly steps.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and eliminates the need for fixing the bearing cover and the bearing case with screws, thereby reducing manufacturing costs such as reducing the number of parts and assembly man-hours, and stabilizing quality. An object of the present invention is to provide a drive device for a single-row washing machine that can be improved.

Structure of the Invention In order to achieve the above object, the driving device of the one-tank washing machine of the present invention has a washing basin and dehydration basin surrounded by an outer tank and having rotary blades at the center of the bottom (the inner tank is A cylindrical tube i′ curved concentrically fixed to the upper end, a washing shaft having the rotary blade fixed to the upper end, and a bearing located below the outer tub to support the cylindrical sleeve and the washing shaft. A case and a bearing cover, a brake drum and a drum holder housed in the bearing case and the bearing cover and connected to the cylindrical shaft, and a brake drum and a drum holder housed in the brake drum and the drum holder and connected to the washing shaft. 1'
+! 'j5' is placed at the contact part between the I2 case and the bearing cover.
A plurality of protrusions are provided protrudingly on one of the receiving case, the force receiving cover, and the other is provided with a number of recesses that fit into the protrusions.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. r:'= i ig is a longitudinal sectional view of the old type washer 1 and 4, Figure 2 is a longitudinal sectional view of the braking device and deceleration device part of the same tank type washer 4 and 4, and Figure 3 is the same tank type washer 1 and 4. FIG. 4 is an enlarged cross-sectional view of the bearing case and the attachment part of the bearing cover of the washing machine, and FIG. In Figures 1 to 4, (1)
- The outer box of the washing machine, (2) the top plate attached to the top of the outer box (1), (the lid pivoted on the top plate (2), (
4) is a hanging device with a built-in anti-vibration spring, and (5) is a hanging device (4).
) is suspended and supported by the outer box (1), and a substrate (6) is fixed to the outside of the bottom of the outer tank (5). This board (6) includes a dehydrating platform a (7) and a washing machine 1.
A dedicated electric @ machine (8) is fixed, and a bearing cover (9) and a wheel bearing case Qfl), which house a braking device and a deceleration device inside, are fixed concentrically with the outer tank (5). There is. A bearing αυ is fixed to the bearing cover (9) and the bearing case 01. @ is a cylindrical shaft, the upper end of which is connected to the inner tank σ→ via a coupling (2),
Moreover, the lower end is press-fitted and fixed to the upper end of the brake drum συ. A brake band is wound around the body of this brake drum (total), with one end fixed to the bearing case θ, the other end pivotally supported by the operating lever aQ, and a brake liner fixed to the inside. On the bottom of the bearing case 0*,
Near the installation part of the bearing 0υ and the brake drum σ
Brake Q'A) αη A groove portion having a plurality of small holes is formed in an annular shape at a position inside the outer diameter of the contact portion. The gap (4) between the bottom of the shaft bearing case 00 described in ii and the brake drum αυ is set to 2 mm, allowing dirt to enter. The lower part of the bearing cover (9) and the bearing case Q
0 is formed with an edge along the horizontal plane, a plurality of four parts (9) are formed on the edge of the bearing cover (9), and a protrusion Ql' is formed on the edge of the bearing case OO. are formed respectively, and these four parts (9
)' and the protrusion JOi fit into each other. In addition, a stepped portion is formed on the upper outer circumferential surface of the body of these bearing cover brake drums QF9 and has a diameter smaller than the contact surface of the brake band (171), and this stepped portion is formed on the inner circumferential surface. Also, drum holder α ports are formed at the lower part of the brake drum OQ, and this drum holder a1
has multiple protrusions protruding from the upper surface, and the lower part is the lower bearing Q.
1), and its lower side is formed into a serration shape in cross section. A dewatering driven pulley (4) having a hole with a corresponding cross-sectional shape is fitted and fixed to the lower serrations of the drum holder, and this dewatering driven pulley (1) is connected to a dewatering electric motor by a V-belt. (7)
is connected to. Dedicated for dewatering The output shaft of the motor (7) is equipped with a drive pulley integrated with a cooling fan.
) is fixed on the outside.

By rotating the dewatering electric rE6 <a (7), the inner tank
■ is rotated. At this time, the actuating lever θQ is connected to the actuating bracket by the energization of the solenoid (a)
It is attracted in the direction of the arrow in the figure, and the brake band αη is in a released state with respect to the brake drum 4.

To stop the rotation of the internal 0, cut off the power to the solenoid (support), and the actuating lever aCt, which is pivoted to the actuating lever #l (c), is rotated in the opposite direction of the arrow in Fig. 4 by the brake spring). The brake band 0η is pressed against the brake drum QO, and the brake drum (G) stops. At this time, the brake band Q't) and the brake drum θ
Frictional heat is generated between the A lower shaft (G) with a large gear formed concentrically on the upper part is fitted into the drum receiver 0 via a bearing, and a stepped portion is formed in the middle of the lower shaft (C). , hl (on the dewatering driven pulley) are supported by washers Q attached to this stepped portion. On the lower part 1iii11), a collar which has a local part at the lower M+j and whose upper end abuts against the washer IJiI) is fitted onto the outside, and the secondary 2XI pulley for washing (2) is attached to the collar assembly. Tsuba and bottom 1': l! (cuff) It is clamped and fixed between a nut that screws into the threaded part at the lower end.

The washing driven pulley (4) is provided with:
A washing drive pulley with an integral cooling fan fixed to the output shaft of a laundry electric motor (8) is connected to four barrels.

On the other hand, the upper outer circumferential surface of an internal gear (with gears formed on the inner circumferential side) is tightly attached to the upper step part of the inner surface of the brake drum (c). ), the lower side of the contact surface with the brake drum a5 is
It is formed into a cylindrical surface with a smaller diameter than the corresponding contact surface. As mentioned above, the small-diameter part of the body of the brake drum (A) and the large-diameter part of the internal gear () fit together, so the inner peripheral surface of the brake drum (4) and the internal gear () fit together. A space is formed between the outer peripheral surface and the inner tank α over an equivalent length in the axial direction.
When the rotation of ◆ is stopped, the heat generated between the brake band α and the brake drum (G) is insulated by the space.

Further, a recessed portion is formed at the lower end of the internal gear (7) to engage a protrusion protruding from the drum holder Q, and the engagement of these protrusions and protrusions with the recess allows the internal gear so to Drum support O
Fixed to @. The planetary vehicle 0◇, which meshes with the inner FA 1m vehicle (7), is supported by a support body) and a support frame shell so as to be able to rotate and revolve. @It is fitted onto the lower end of the serrated cross-sectional shape of the lowered loop shaft ■.Washing shaft ■
The upper end of the rotor blade is externally fitted and fixed.

When the laundry/J shield movement (8) rotates, the laundry driven pulley (on the lower shaft), the sun gear, internal gear (g), and planetary gear c (n and support) formed on this lower shaft. A planetary gear reduction device constituted by a frame () and a support (), and a rotary blade () are rotated via a washing shaft. According to the present invention, the protrusions and recesses of the bearing cover and the bearing case are fitted together, so that the center of the bearing cover and the bearing case can be fixed without fixing with screws or the like. , can be assembled with an angle of 11 degrees, reducing assembly man-hours and stabilizing quality.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a single-tub washing machine according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the braking device and deceleration device portion of the single-tub washing machine, and Fig. 3 is a longitudinal cross-sectional view of the same 4a type washing machine. FIG. 4 is an enlarged sectional view of the bearing case of the washing machine and the mounting portion of the bearing cover, and FIG. 4 is a partially cutaway plan view of the bearing case and the operating lever of the washing machine. (5)...Outer tank, (9)...Bearing cover, (9)・
... recess, Ql ... bearing case, acr ... protrusion,
(2)...Cylindrical shaft, Q→...Inner 1L (illN・
・Brake drum, C1l...Y ram holder, (7)・
-・Internal gear, cutout...planetary gear, working...support,
Trowel - Support frame, (B) Washing shaft, (2) Rotary blade agent Isohiro Shimomoto

Claims (1)

[Claims] 1. An inner tank as a washing and dehydrating tank surrounded by an outer tank and having a rotor at the center of the bottom has a cylindrical shaft meticulously fixed to the upper end, and the rotor is fixed to the upper end. a washing shaft; a bearing case and a bearing cover that are located below the outer tub and support the cylindrical sleeve and the washing shaft; A brake drum and a drum bearing, a brake drum and a speed reduction device housed in the drum hall and connected to the washing shaft are installed, and a bearing case is attached to the abutting portion of the bearing case and the bearing cover. An IK moving bowl for a type 141 washing machine, which has a plurality of protrusions protruding from one of the and a bearing cover, and a plurality of recesses that fit into the protrusions on the other.