Detergent supply apparatus for washing machine and the like and washing machine using the same

• US 4,917,272 A
• Filed: 09/26/1988
• Issued: 04/17/1990
• Est. Priority Date: 02/06/1986
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Ikeda, Yoshio
• Primary Examiner(s): Huppert, Michael S.
• Application Number:
  US07/249,270
• Time in Patent Office: 568 Days
• Field of Search: 222/144.5, 222/145, 222/153, 222/181, 222/185, 222/231, 222/236, 222/325, 222/413, 222/651, 222/DIG. 1, 222/129.1, 222/132, 68/17 R
• US Class Current: 222/231
• CPC Class Codes: B65D 88/68 using rotating devices
• CPC Class Codes: D06F 39/026 the powder or tablets being added directly, e.g. without the need of a flushing liquid
• CPC Class Codes: G01F 13/005 comprising a screw conveyor

Abstract

A detergent supply apparatus includes a detergent storage compartment for storing a powdery detergent, and a conveying device for conveying the powdery detergent from the detergent storage compartment. The conveying device includes a coiled member having a hollow body and an open end. When the conveying device is rotated, the detergent fed from the detergent storage compartment to the hollow body of coiled member is conveyed by coiled member, and then is discharged from the open end of the coiled member.

Claims

1. A washing apparatus having a washing tube, comprising:

a casing having an upper wall including an opening through which the washing tub is accessible, the upper wall also having a rectangular aperture having a circumferential edge;

a detergent supply device detachably mounted on the upper wall for communicating nwith an aintenrior of the casing through the rectangular aperture, including;

a storage casing having side walls arranged opposite to one another for definining a storage space in which a powdery detergent is stored;

discharge opening means for discharging the detergent from the storage space;

conveying means for conveying the detergent received from the storage space to the discharge opening emans, the conveying means having a first coupling element;

a fixed pawl outwardly and substantially perpendicularly projecting from one side wall of the storage casing at which the first coupling element is positioned for engaging with the circumferential edge of the rectangular aperture of the upper wall; and

a movable pawl formed to another side wall of the storage casing for engaging with the circumferential edge of the rectangular aperture of the upper wall, the movable pawl having a sloped portion which is gradually reduced toward the discharge opening emans, the sloped portion being associated with the circumferential eldge of the rectangular aperture of the upper wall for forcibly moving the movable pawl and for engaging the movable pawl with the circumferential edge of the rectangular aperture only by mounting the detergent supply device on the upper wall of the casing of the apparatus;

means for driving the conveying means, the driving means inclulding a second coupling element associated with the first coupling element for transmitting a driving force of the driving means to the conveying means;

means for receiving the detergent from the discharge opening means; and

means for supplying the detergent on the receiving means to the washing tub.

2. An apparatus according to claim 1, wherein the conveying means includes a coiled member including spaces between adjacent coils, the spaces between adjacent coils being exposed to the storage space for receiving the detergent therethrough.

3. An apparatus according to claim 2 further including means for stirring the detergent in the storage space.

4. An apparatus according to claim 3, wherein the stirring means includes a rotatable gear-shaped plate, and a wing substantially perpendicularly extending from the plate, the gear-shaped plate being rotated by the coiled member.