TW201821670A - Manual washing machine - Google Patents

Abstract

This manual washing machine is capable of providing operability in which torque is emphasized in washing and rinsing steps, and high speed is emphasized in a water-draining step. The manual washing machine of the examples of the present invention has a drive power transmission member for transmitting the rotation of an operation part to a drum, and a speed change mechanism. The speed change mechanism is provided between a rotation center shaft of the operation part, and a rotation transmission shaft by which rotation is transmitted from the drive power transmission member to the drum. The rotation speed of the rotation transmission shaft in relation to the rotation speed of the operation part can be changed by the speed change mechanism.

Description

Manual washing machine

The invention relates to a small washing machine that can be carried around, especially a manual washing machine.

The small washing machine is suitable to be brought into the counter, bathroom and shower room for washing small pieces of clothing such as underwear, baby clothes, sportswear and pet clothes.

In general, a manual washing machine is constituted by a rotating drum. As the general name of washing machines including electric washing machines, there are "vertical type washing machines", "drum type washing machines", and "double-tank type washing machines". The "vertical washing machine" has a rotating body at the bottom of the water tank, and the rotating body is washed by generating a stirring water flow. A "drum-type washing machine" is a washing machine in which the rotation axis of the washing tub extends horizontally or obliquely. The "double-tank type washing machine" has a structure having a dehydration tank which is used when a vertical type washing machine is combined for dehydration. In contrast to such a general washing machine, the vertical type washing machine adopts a form in which a drum is rotated when it is manual.

The following description is about a manual washing machine. As a premise, in order to uniformly use the terms used for manual washing machines, a container that rotates to store laundry is called a "drum", and a washing machine whose rotation axis of the drum is a horizontal or inclined horizontal extension is called a "manual horizontal type" "Washing machine", a washing machine in which the rotation axis of the drum is extended vertically is called "manual vertical washing machine".

Patent Document 1 discloses a manual vertical washing machine. The manual vertical washing machine extends the vertical direction of the rotary shaft of the drum as described above. Manual vertical washing machines take out or put in laundry through the upper opening of the drum. In this manual vertical washing machine, an upper cover is provided above a water tank in which a drum is rotatably stored. The upper cover has an operation lever. By rotating the operating lever along a circular track on a horizontal plane, the rotation of the operating lever is transmitted to the drum through the middle cover. A drainage opening is provided on the lower surface of the water tank. The laundry can be put into the drum for washing and dehydration.

The manual vertical washing machine cannot rotate in the water because the laundry and the washing water rotate horizontally together. The function of washing the laundry is not sufficient because it only rotates the drum.

As a product based on the same concept as the manual vertical washing machine disclosed in Patent Document 1, a "Leadworks Laundry POD" (trade name) is known.

Patent Document 2 discloses a manual horizontal washing machine. The manual horizontal type washing machine extends the horizontal direction of the rotation axis of the drum as described above. The sink for accommodating the lower half of the drum has a flat rectangular bottom surface, and four corners of the bottom surface are provided with anti-skid devices. The "seat" of the washing machine is formed by the four anti-skid devices. A drain is formed at the lower part of the sink. The upper cover has an upper half for accommodating the drum, and the upper part of the upper cover is formed with a handle and a water supply port. Rotary drive shafts of the drum are directly connected to operating levers at both ends thereof. By holding the two operating levers with both hands and rotating them on a circular track on a vertical plane, the drum can be rotated.

In the manual horizontal washing machine, the laundry to be moved upwards as the drum rotates, and then dropped. That is, in a manual horizontal type washing machine, "washing" of laundry is performed. Fig. 30 is a diagram for explaining "ramming". In FIG. 30, reference numeral 300 denotes a drum of a manual washing machine, and reference numeral 302 denotes a rotation axis of the drum 300. The drum rotation shaft 302 extends in the horizontal direction. The laundry 304 in the drum 300 moves upward as the drum 300 rotates, and then the laundry 304 falls and enters the water 306. The laundry to be washed 304 is moved upward together with the rotation of the drum 300, and then dropped into the water 306. By this series of actions, the laundry to be “washed”, that is, the collision of the washing water and the laundry, and Collisions between laundry items containing washing water.

In the manual washing machines of Patent Documents 1, 2 and "Leadworks Laundry POD", both the vertical type and the horizontal type are designed to rotate the drum by operating the joystick to perform washing and dehydration. In the washing step, the drum is partially immersed in the water supplied to the water tank. In this state, particularly in the horizontal type, a large torque (operating force) is required to rotate the drum for putting laundry in and perform "washing". [Prior Art Document] Patent Document 1: Japanese Patent Application Publication No. 2006-212405 Patent Document 2: Japanese Patent Application Publication No. 2009-119199

As mentioned above, if the manual vertical washing machine is used to rotate the drum horizontally, since the laundry to be washed is rotated together with the drum, the water flow necessary for agitating and washing will not be generated, and the washing function will not be substantially performed. On the other hand, in the manual horizontal washing machine, it is possible to perform the washing function by the above-mentioned "tamping". That is, if the manual horizontal type is adopted, the cleaning function can be reliably guaranteed. However, in a manual horizontal type washing machine, a large torque (operating force) is required compared with a manual vertical type washing machine in order to rotate the drum while picking up the laundry in the drum.

The present invention has been made in view of the above problems, and an object thereof is to provide a manual washing machine, which can perform not only the washing step, but also the rinsing step and the dehydration step with a single manual washing machine, while providing an operation that emphasizes torque in the washing step and the washing step. It also provides high-speed operability in the dehydration step.

A further object of the present invention is to provide a manual washing machine, which can reduce the operating force required to rotate the drum when a manual horizontal type washing machine with a washing function is used.

In order to solve the above problems, the present invention provides a manual washing machine (100) including a water tank (10) with an opening at an upper end; a drum (20) rotatably disposed in the water tank (10); and an upper cover (12) ) To cover the opening at the upper end of the water tank (10); an operation part (4) is rotatably provided on the upper cover (12); a power transmission member (24) is used for the operation part (4) The rotation of the transmission to the drum (20); and a speed change mechanism (60), a rotation central axis (6) provided in the operation part (4), and a transmission from the power transmission member (24) to the drum (20) A rotation transmission shaft (28) can change the rotation speed of the rotation transmission shaft (28) relative to the rotation speed of the operation part (4).

Other objects and effects of the present invention are described in detail in the embodiments of the present invention.

The preferred embodiments of the present invention will be described below based on the attached drawings.

FIG. 1 shows a washing machine of the embodiment. In FIG. 1, the washing machine of the embodiment is indicated by reference numeral 100. The washing machine 100 is manual, and the operation disc 4 is rotated around the rotation center axis 6 by holding the joystick 2 to rotate a drum described later.

The manual washing machine 100 is made of a synthetic resin. The washing machine 100 includes a water tank 10 and an upper cover 12 that is detachable from the water tank 10. The upper cover 12 can be fixed to the water tank 10 by a plurality of single-sided buckles 14. The unilateral buckle 14 is an example of a typical member for fixing the upper cover 12 to the water tank 10. FIG. 2 is a perspective view of the washing machine 100 as viewed from the bottom and the rear. The bottom surface 10a of the water tank 10 is formed with a drainage hole 16 for dehydration. A rubber plug 18 is detachably installed in the drainage hole 16. FIG. 3 is the same perspective view as FIG. 2, with the rubber plug 18 removed from the drainage hole 16 for dehydration. A preferred arrangement position of the drainage hole 16 for dewatering will be described later.

FIG. 4 shows a state where the upper cover 12 is removed from the water tank 10. The water tank 10 is opened upward. A drum 20 is disposed in the water tank 10. The drum 20 is opened upward like the water tank 10, and has a circular shape in a horizontal cross section. The drum 20 is supported from the axial center on the bottom surface 10 a of the water tank 10, and is rotatable around an axis Od extending in the up-down direction of the drum 20. The drum 20 is preferably attachable and detachable.

The peripheral wall 20 a of the drum 20 and the bottom wall (not shown in FIG. 4) have a shape having, for example, a vertical grid-like opening for drainage. A vertical grid extending in the up-down direction of the peripheral wall 20 a is indicated by reference numeral 22.

Looking closely at the drum 20 shown in FIGS. 4 and 5, it can be seen that the drum 20 has a raised portion 20 b protruding inwardly on the inner surface thereof. There may be a plurality of the raised portions 20 b in the circumferential direction. The raised portion 20b can improve the washing efficiency.

A middle cover 24 is attached to the upper cover 12 so as to be detachable and non-rotatable, and the middle cover 24 covers the upper end opening of the drum 20. The middle cover 24 is a member for transmitting power, and is used to transmit the operation of the user who rotates the joystick 2 to the drum 20. An outer peripheral edge portion of the middle cover 24 is formed with a plate-like protrusion 26 extending downward. The protrusions 26 are plural, and the plurality of protrusions 26 are preferably arranged at equal intervals in the circumferential direction of the middle cover 24. Each protrusion 26 enters between two adjacent vertical grids 22 in the peripheral wall 20 a of the drum 20 and is joined to the vertical grid 22. By engaging the protrusions 26 passing through the vertical grid 22 and the drum 20, the middle cover 24 and the drum 20 can rotate integrally around the axis Od of the drum 20.

FIG. 5 shows a state where the middle cover 24 is removed from the upper cover 12 shown in FIG. 4. Referring to FIG. 5, the upper cover 12 has a rotation transmission shaft 28 extending downward from the upper cover 12. The rotation transmission shaft 28 is rotatably mounted on the upper cover 12. A non-circular portion 28a is formed at a lower end portion of the rotation transmission shaft 28, and a screw portion 28b is formed below the non-circular portion 28a. In addition, FIG. 5 shows a state before the unilateral buckle 14 is attached to the water tank 10.

The middle cover 24 has a circular outline, and has a non-circular through hole 24a in the center (FIG. 5). The non-circular through hole 24 a has a shape complementary to the non-circular portion 28 a of the rotation transmission shaft 28 described above, and can accommodate the non-circular portion 28 a. The screw portion 28b of the rotation transmission shaft 28 is provided with a fixing nut 30, and the middle cover 24 is fixed to the rotation transmission shaft 28 in a relatively non-rotatable manner by stably screwing the fixing nut.

4 and 5, the upper cover 12 has a circumferential groove 32 on an inner surface of an outer peripheral portion thereof. This circumferential groove 32 extends in the circumferential direction of the upper cover 12. FIG. 6 is a partial cross-sectional view taken along the line VI-VI in FIG. 1. The circumferential groove 32 houses a water stop ring 34. When the upper ring 12 is fixed to the water tank 10, the water stop ring 34 is in a state of being crimped to the outer peripheral upper end surface 10 b of the water tank 10. Accordingly, the water in the water tank 10 can be prevented from leaking between the water tank 10 and the upper cover 12 by the water stop ring 34. As a modification, the water stop ring 34 may be arranged on the outer peripheral upper end surface 10 b of the water tank 10 (FIG. 6).

The manual washing machine 100 of the embodiment can be used in a first use state (FIG. 1) in which the drum 20 is placed in a vertical state (FIG. 5) and a state in which the drum 20 is placed in a horizontal state (FIGS. 7 and 8). The second usage aspect. Typically, the first usage pattern is used in the dehydration step, and the second usage pattern is used in the washing step and the rinsing step.

Referring to Figs. 2 and 3, three circular cushioning surfaces 10a of the water tank 10 are equidistantly mounted with three first buffer members, that is, rubber sheets 36. The three first rubber sheets 36 are located on a common horizontal plane. By using these three first rubber pieces 36, the seat portion in the first use state is constituted. As a modified example, the bottom surface a of the water tank 10 can be configured as the seat portion in the first use state without attaching the first rubber sheet 36.

By placing the three first rubber sheets 36 on a horizontal plane, the first use state of the state in which the drum 20 is vertically placed, that is, the state in which the rotation axis Od extends in the up and down direction (FIG. 4) is set.

Referring to FIG. 1, a side surface of the washing machine 100 is formed with a rising surface 40 that intersects the bottom surface 10 a of the sink 10. The rising surface 40 is preferably perpendicular to the bottom surface 10a of the water tank 10, that is, a vertical surface, but it may be inclined at, for example, 70 °. The rising surface 40 is formed by a slightly rectangular surface, and second corners are respectively provided with second buffer members, that is, rubber sheets 42, and the four second rubber sheets 42 are located on a common vertical plane. The four second rubber pieces 42 constitute a seat portion in the second usage state. As a modification, the seat portion in the second use aspect may be constituted by the rising surface 40.

By placing the four second rubber pieces 42 on a horizontal plane, the second use state is set in a state where the drum 20 is placed horizontally, that is, a state where the rotation axis Od is extended in the horizontal direction. This second usage pattern is shown in Figs.

Referring to FIGS. 7 and 8, in the second washing machine 100, it is preferable that the washing machine 100 has a water supply port 50 at the upper part and a drain port 52 at the lower part. A cover 54 is provided at the drain port 52. The lid 54 can be manually rotated to switch between the water stop position (FIG. 7) for closing the drain port 52 and the open position (FIG. 8) for opening the drain port 52. Of course, the cover 54 can be detachable from the drain opening 52.

Specifically, referring to FIGS. 2 and 3 in addition to FIGS. 7 and 8, a water supply port 50 is provided on the peripheral wall of the water tank 10 at a position away from the standing surface 40, that is, the periphery opposite to the standing surface. This water supply port 50 can also be provided on the upper cover 12. Referring to Figs. 2 and 3, a preferred installation position of the aforementioned drainage hole 16 for dewatering will be described, in the bottom surface 10a of the water tank, away from the standing surface 40, that is, the drainage hole 16 for dewatering is provided away The rising surface 40 is preferably located on the side opposite to the rising surface 40 (FIG. 3). Thereby, in the washing machine 100 of the second usage aspect, since the drainage hole 16 for dewatering can be located at a high place, it is not necessary to provide a cover for the drainage hole 16 for dewatering. The drain port 52 may be disposed in the upper cover 12 and a position adjacent to the rising surface 40, but it is not limited to this. The drainage hole 52 may be disposed in the bottom surface 10 a or the peripheral surface of the water tank 10 and adjacent to the rising surface 40.

7 and 8, an oval guide recess 58 is formed on the upper cover 12. The operation disc 4 is housed in this guide recess 58. When the disc 4 is operated, it is guided by the guide recess 58 so as to be displaceable in the longitudinal direction of the guide recess 58.

The operation of rotating the operation disc 4 is transmitted to the drum 20 through a gear transmission mechanism. That is, if the operation disc 4 is rotated, this operation force is transmitted to the drum 20 through the gear transmission mechanism, and as a result, the drum 20 will rotate. 9 and 10 show a gear shifting mechanism 60 arranged on the upper cover 12.

The gear transmission mechanism 60 includes a first gear 64 attached to the rotation center shaft 6 of the operation disc 4 and a ring gear 66 formed inside the operation disc 4. The ring gear 66 and the first gear 64 are positioned at a coaxial position. The gear transmission mechanism 60 further includes a driven gear 68 attached to the rotation transmission shaft 28 (FIG. 5).

Although it is determined arbitrarily, the gear ratio of the first gear 64 and the driven gear 68 is 1: 1, and the gear ratio of the driven gear 68 and the ring gear 66 is 1: 5. With this gear ratio, even a woman with low strength can rotate the drum 20 at high speed in the high-speed mode described below, and can easily operate the joystick 2 to rotate the drum 20 in the low-speed mode described below. Therefore, in the first state shown in FIG. 9 showing that the ring gear 66 and the driven gear 68 mesh with each other, power transmission with a relatively high emphasis on speed is performed (high-speed mode). On the other hand, in the second state shown in FIG. 10 showing that the first gear 64 and the driven gear 68 mesh with each other, power transmission with relatively high torque is performed (low speed mode).

The elliptical guide recess 58 of the upper cover 12 displaces the operation disk 4, and the gear transmission mechanism 60 can change the rotation speed of the rotation transmission shaft 28 relative to the rotation speed of the operation disk 4. That is, the gear shift mechanism 60 can be switched between the first position (emphasis on speed) and the second position (emphasis on torque). The operation disk 4 shown in FIG. 1 is positioned at the above-mentioned first position (emphasis on speed). The operation disc 4 shown in FIG. 8 is positioned at the above-mentioned second position (emphasis on the moment).

FIG. 12 is a diagram for explaining a displacement limiting mechanism that guides the displacement of the operation disc 4 and positions the operation disc 4 at the first position and the second position while restricting unintentional displacement. In FIG. 12, the first gear 64 is omitted in order to avoid confusion of lines.

In FIG. 1, a button 70 is formed on the top surface of the rotation center axis 6 of the operation disc 4. This button 70 is incorporated into the rotation center axis 6. This button 70 has a function of inhibiting gear switching that may be performed by the gear shifting mechanism 60.

The button 70 is biased upward by a spring (not shown). Returning to FIG. 12, the rotation central shaft 6 is guided by a guide hole 72 formed in the upper cover 12. The guide hole 72 has an elongated shape. One end and the other end of the guide hole 72 form a first circular portion 72a and a second circular portion 72b, respectively. The diameters of the first circular portion 72a and the second circular portion 72b are the same. The first circular portion 72a and the second circular portion 72b are connected by a conversion portion (guide portion) 72c. The conversion portion 72c is composed of two linear side edges juxtaposed with each other. The width w of the conversion portion (guide portion) 72c is smaller than the diameter of the first circular portion 72a and the second circular portion 72b.

13 and 14 are diagrams in which the button 70 is extracted. The button 70 includes a cap portion 70a, plate-shaped leg portions 70b hanging down from both side edges of the cap portion 70a, a convex portion 70c protruding outward from the lower end of each leg portion 70b, and two plate-shaped leg portions 70b, 70b. Side by side. In addition, the convex portion 70c of each leg portion 70b has an outer contour having an arc-shaped outer peripheral surface that is complementary to that of the first circular portion 72a and the second circular portion 72b.

When the rotation central axis 6 of the operation disc 4 is located at the first circular portion 72a or the second circular portion 72b, the arc-shaped convex portion 70c of the button 70 is located at the first circular portion 72a or the second circular portion 72b. So that the rotation central axis 6 of the operation disc 4 is positioned by the first circular portion 72a or the second circular portion 72b (FIG. 15). Thereby, the operation disc 4 is positioned at the above-mentioned first position (emphasis on speed: FIG. 1) or the above-mentioned second position (emphasis on torque: FIG. 8). In the first position, the drum 20 can be rotated at high speed. In the second position, the torque for rotating the drum 20 can be increased, but the rotation of the drum 20 is relatively low.

When the operation disc 4 is shifted, the button 70 is pressed. 14 and 16 are diagrams for explaining a state in which the button 70 is pressed. When the button 70 is pressed, the convex portion 70c of each leg portion 70b is displaced below the first circular portion 72a or the second circular portion 72b, and is disengaged from the engagement with the first circular portion 72a or the second circular portion 72b. . Thereby, the rotation center shaft 6 can be shifted to the conversion part (guide part) 72c (FIG. 17). This makes it possible to shift the operation panel 4 to the first position (emphasis on speed: FIG. 1) or the second position (emphasis on torque: FIG. 8) while restricting unintentional displacement toward the first and second positions. ).

This displacement is preferably performed while the rotation of the drum 20 is stopped. When shifting, it is better to smoothly mesh between gears. In other words, it is better to prevent a collision between the tooth tops of the two gears to be meshed during the displacement. According to the embodiment, since the leg portion 70b of the button 70 is restricted by the transfer portion (guide portion) 72c during the displacement, the rotation of the operation disc 4 is stopped. The rotation center axis 6 cannot be displaced. Since it can be switched without stopping the rotation of the operation disc 4, when the ring gear 66 or the first gear 64 of the gear of the operation disc 4 is separated from the driven gear 68, the driven gear 68 due to the drum 20 and the laundry The inertia force will cause idling, and there is a risk of damage to the gear when re-engaging. It is better to have a structure that cannot be displaced without stopping rotation. When the rotation of the operation disc 4 is stopped and displaced, the ring gear 66 and the first gear 64 are maintained in a positional relationship with each other to smoothly mesh with the positional relationship of the driven gear 68 (FIG. 11). Thereby, it is possible to prevent a collision between the tooth tops of the gears at the time of shifting, and to smoothly shift.

Referring to FIG. 18, a description will be given of a case where the drum 20 is rotated vertically around an axis extending in the lateral direction as a center, and a case where the drum 20 is rotated horizontally around an axis extending in the longitudinal direction as a center. Needs up to 5 times more power.

In FIG. 18, the drum 20 rotates vertically around an axis extending in the horizontal direction. The drum 20 of FIG. 18 is a horizontal type. The laundry is indicated by R. The mass of the laundry R is described as "m", and the rotation speed of the drum 20 is described as "v". When the centrifugal force for the laundry R is equal to the gravity (g), the gravity applied to the laundry R is Since mg, centrifugal force is m ｛V2 / r｝, it can be expressed by the following calculation formula.

mg = m ｛V2 / r｝

The above calculation formula is deformed to obtain gr = V2.

The energy E (v) during vertical rotation can be expressed by the following calculation formula. The radius of the drum 20 is represented by r. E (v) = (1/2) ｛m V2｝ + 2mgr = (1/2) ｛m V2｝ + 2mV ² = (5/2) ｛m V2｝

On the other hand, when the drum 20 is rotated horizontally around an axis extending in the up-down direction, when the drum 20 is rotated at the same speed as the vertical rotation, the energy E (h) can be expressed by the following calculation formula. E (h) = (1/2) ｛m V2｝

No potential energy during horizontal rotation. When comparing horizontal rotation with vertical rotation: E (v): E (h) = 5: 1

It can be seen that the vertical rotation (horizontal type) as described above requires 5 times the maximum force compared to the horizontal rotation (vertical type).

Next, a typical use method of the manual washing machine 100 will be described. First, the upper cover 12 is removed, and dirty laundry such as underwear is put into the drum 20. Next, the upper cover 12 closes the water tank 10, and the upper cover 12 is fixed with the buckle 14 so that the water tank 10 and the upper cover 12 can be made liquid-tight.

Next, the washing machine 100 is erected to a state shown in FIG. 7. After confirming that the drain port 52 is closed with the cover 54, the faucet or shower head is brought close to the water supply port 50 and the washing machine 100 is filled with water. When an appropriate amount of water is added to the washing machine 100, a detergent is injected from the water supply port 50. After completing this preparation step, the operation disc 4 is positioned at the second position (emphasis on torque: FIG. 8), and a washing step is performed. In this washing step, since the drum 20 is placed horizontally, the one-way or two-direction rotation of the drum 20 accompanying the rotation operation of the joystick 2 causes the dirty laundry to be washed while moving in the drum 20.

After the washing step is completed, the cover 54 is rotated to open the drain port 52. Thereby, the sewage in the washing machine 100 can be discharged to the outside through the drain port 52. After the drainage is completed, the faucet or shower head is brought close to the water supply port 50, and the water is supplied to the washing machine 100 through the water supply port 50 while the joystick 2 is rotated to rotate the drum 20. Furthermore, the drum 20 is rotated from time to time in a state where the water outlet 52 is closed with the cover 54 and water is stored in the washing machine 100. By doing so, the rinsing step can be performed. In this rinsing step, since the drum 20 is in a horizontal state, it is possible to perform the rinsing step while moving the laundry to be moved in the drum 20.

When the washing step is completed, the washing machine 100 is placed in the state shown in FIG. 1 in the horizontal position. The drum 20 is in a vertical state. Then, the operation disc 4 is positioned at the first position (speed is important). The rubber stopper 18 (FIG. 2) of the drainage hole 16 for dehydration is removed (FIG. 3). When this preparation for dehydration is completed, the drum 20 is rotated at high speed by rotating the joystick 2, whereby the dehydration step can be performed.

According to the manual washing machine 100 of the embodiment, the washing step and the washing step can be performed in a state of the horizontal drum. Thereby, washing and rinsing can be performed while the laundry to be moved in the drum accompanied by the rotation of the drum. On the other hand, the dehydration step can be performed in a state of a vertical drum. In the case of a vertical drum, since the laundry does not move in the drum with the rotation of the drum, the laundry can be dehydrated in a stable state.

Furthermore, according to the manual washing machine 100 of the embodiment, since the gear shifting mechanism is provided, the drum 20 can be rotated at a gear ratio that emphasizes torque in the washing step and the washing step. In the dehydration step, the drum 20 can be rotated at a gear ratio that emphasizes speed.

19 to 23 show modified examples of the gear shifting mechanism. The gear shifting mechanism shown in FIGS. 19 to 23 can position the operating disc 4 in a first position (emphasis on speed: FIG. 20) or a second position (emphasis on torque: FIG. 21) by operating the disc 4 up and down. That is, when the rotation center axis 6 of the operation disc 4 is located in the first circular portion 72a or the second circular portion 72b of the guide hole 72, the operation disc 4 can be depressed to position the operation disc 4 on the guide The first circular portion 72a or the second circular portion 72b of the lead hole 72.

The operation disc 4 rotates the central axis 6 and has a circular cross-section portion 206a and a slightly rectangular cross-section portion 206b located below it and flattened on both sides. The width of this slightly rectangular cross-sectional portion 206b is substantially the same as the width of the conversion portion 72c of the guide hole 72. When the operation disc 4 is lifted, the slightly rectangular cross-sectional portion 206b enters the conversion portion 72c of the guide hole 72, and the conversion portion (guide portion) 72c can be moved. Therefore, lifting the operation disc 4 and displacing the operation disc 4 along the conversion portion 72 c of the guide hole 72 (FIG. 23) can make the operation disc 4 reach the first position (emphasis on speed: FIG. 20) or the second Position (emphasis on torque: Figure 21). In addition, by pressing the operation disc 4 at the first position or the second position, the operation disc 4 can be positioned at the first position or the second position (FIG. 22).

24 and 25 show another modification of the gear transmission mechanism. FIG. 24 shows a state when the operation disc 4 is positioned at the first position (emphasis on speed). FIG. 25 shows a state where the operation disc 4 is positioned at the second position (emphasis on the moment). The switching between the first position and the second position can be performed by operating the disc 4 up and down.

The operation disc 4 includes an outer peripheral cylindrical portion 210, and a circular gear 212 is formed on an inner peripheral surface of the outer peripheral cylindrical portion 210. The operation disc 4 is rotatable about a rotation center axis 6. This rotation center axis 6 is fixed and cannot be displaced. A driving gear 216 is fixed to the rotation central shaft 6 of the disk 4.

Referring to FIG. 24, FIG. 24 shows a state when the operation disc 4 is depressed and positioned at the first position (emphasis on speed) as described above. In this state, the driving gear 216 that operates the rotation center shaft 6 of the disc 4 is in an idle state. On the other hand, the circular gear 212 on the inner peripheral surface of the outer peripheral cylindrical portion 210 meshes with the driven gear 68.

Referring to FIG. 25, FIG. 25 shows a state when the operation disc 4 is lifted up and positioned at the second position (emphasis on the moment) as described above. In this state, the driving gear 216 that operates the rotation center shaft 6 of the disc 4 meshes with the driven gear 68 through the intermediate gear 218. On the other hand, the circular gear 212 on the inner peripheral surface of the outer peripheral cylindrical portion 210 is in an idle state. In addition, as a modification, the intermediate gear 218 may be omitted, and the driving gear 216 may be directly meshed with the driven gear 68.

The position fixing mechanism of the first position (emphasizing speed) and the second position (emphasizing position) accompanying the up-and-down operation of the operation disc 4 may be configured by combining the rubber ring 220 and the convex portion 222. That is, the rubber ring 220 is provided on the outer peripheral surface of the outer peripheral cylindrical portion 210 of the operation disc 4. On the other hand, a convex portion 222 is formed on the upper cover 12. When the operation disc 4 is to be moved up and down and moved to the first position or the second position, the rubber ring 220 needs to pass over the convex portion 222 so that the operation disc 4 is in the first position and the second position (emphasis is attached). Position) is fixed as possible.

26 and 27 show another modification of the gear transmission mechanism. The gear shift mechanism shown in FIGS. 26 and 27 includes a planetary gear. Specifically, the drive gear 216 is fixed to the rotation center shaft 6 of the operation disc 4, the outer gear 242 is formed on the outer peripheral surface of the cylindrical portion of the operation disc 4, the idler gear 246 having a relatively large diameter, and the diameter A relatively small idler gear 248 and a driven gear 68. The driving gear 216, the large-diameter idler gear 246, and the small-diameter idler gear 248 are integrated by the swing arm 250.

FIG. 26 shows a state at the second position (emphasis on torque: washing, rinsing). FIG. 27 shows the state at the first position (emphasis on speed: dehydration).

Referring to FIG. 26 showing the state of the second position (emphasis on torque: washing and rinsing), when the operation disc 4 is rotated counterclockwise, the drive gear 216 and the driven gear 68 mesh with the large-diameter idle gear 246.

Referring to FIG. 27 showing the state of the first position (emphasis on speed: dehydration), when the operation disc 4 is rotated clockwise, the outer gear 242 of the operation disc 4 and the driven gear 68 mesh with the small-diameter idle gear 248 .

A modification of the gear transmission mechanism shown in FIGS. 26 and 27 described above will be described with reference to FIGS. 28 and 29. The gear transmission mechanism shown in FIGS. 26 and 27 employs an outer peripheral gear 242 formed on the outer peripheral surface of the cylindrical barrel portion of the operation disc 4. However, the gear transmission mechanism shown in the modification of FIGS. 28 and 29 is used. An inner peripheral gear 252 formed on the inner peripheral surface of the cylindrical portion of the operating disc 4 is used.

FIG. 28 shows the state at the second position (emphasis on torque: washing, rinsing). FIG. 29 shows the state at the first position (emphasis on speed: dehydration).

Referring to FIG. 28 showing the state of the second position (emphasis on torque: washing and rinsing), when the operation disk 4 is rotated counterclockwise, the drive gear 216 and the driven gear 68 mesh with the large-diameter idle gear 246.

Referring to FIG. 29 showing the state of the first position (emphasis on speed: dehydration), when the operation disc 4 is rotated clockwise, the outer gear 242 of the operation disc 4 and the driven gear 68 mesh with the small-diameter idler gear 248 .

100‧‧‧Manual washing machine

2‧‧‧ joystick

4‧‧‧ operation disc (operation part)

6‧‧‧rotation center axis

10‧‧‧ Sink

10a‧‧‧ Underside

10b‧‧‧ outer peripheral upper end

12‧‧‧ Upper cover

14‧‧‧Single buckle (fixed member)

16‧‧‧Drain hole (first drainage hole)

18‧‧‧ rubber plug

20‧‧‧ roller

20a‧‧‧Zhou Bi

20b‧‧‧ Uplift

24‧‧‧ Middle cover (power transmission member)

24a‧‧‧through hole

28‧‧‧rotating transmission shaft

28a‧‧‧ Non-circular section

28b‧‧‧Screw

30‧‧‧ fixed nut

34‧‧‧Waterstop ring (waterstop)

36‧‧‧The first rubber sheet (the first seat)

40‧‧‧ rise

42‧‧‧Second rubber sheet (second seat)

50‧‧‧ water inlet

52‧‧‧drain

54‧‧‧ cover

58‧‧‧Guide recess

60‧‧‧Gear shifting mechanism

64‧‧‧first gear

66‧‧‧Ring gear

68‧‧‧ driven gear

70‧‧‧ button

70a‧‧‧cap

70b‧‧‧leg

70c‧‧‧ convex

72‧‧‧ guide hole

72a‧‧‧First round section (first position)

72b‧‧‧Second round section (second position)

72c‧‧‧Conversion Department (Guide)

Od‧‧‧ axis

206a‧‧‧Circular section

206b‧‧‧Slightly Rectangular Section

210‧‧‧ Peripheral cylindrical part

212‧‧‧Circular gear

216‧‧‧Drive gear

218‧‧‧Intermediate gear

220‧‧‧ rubber ring

222‧‧‧ convex

242‧‧‧ peripheral gear

246‧‧‧ relatively large diameter idler gear

248‧‧‧ relatively small diameter idler gear

250‧‧‧ Swing arm

252‧‧‧Inner peripheral gear

300‧‧‧ roller

302‧‧‧Rotary shaft

304‧‧‧ Laundry

306‧‧‧ Water

FIG. 1 is a perspective view of a manual washing machine (vertical drum state) according to the embodiment. FIG. 2 is a perspective view of the manual washing machine of FIG. 1 as viewed from an oblique rear and bottom, wherein a drainage hole for dehydration is closed with a rubber plug. FIG. 3 is a perspective view of the manual washing machine shown in FIG. 1 as seen from an obliquely downward direction similar to FIG. 2, with the rubber plug removed from a drainage hole for dehydration. FIG. 4 is a perspective view of the manual washing machine in the embodiment, in which the upper cover is removed. FIG. 5 is a perspective view of the manual washing machine in the embodiment in which the upper cover is removed in the same manner as in FIG. 4, wherein the middle cover serving as a power transmission member is further removed from the upper cover. FIG. 6 is a cross-sectional view of the manual washing machine of the embodiment taken along the line VI-VI. FIG. 7 is a perspective view showing a manual washing machine (a horizontal drum state) according to an embodiment in an upright state, in which a cover of a drain port is provided at a water stop position. FIG. 8 is a perspective view showing a manual washing machine (a horizontal drum state) according to an embodiment in an upright state, in which a cover of a drain port is provided at a drain position. FIG. 9 is a diagram for explaining a gear shifting mechanism of the manual washing machine of the embodiment, showing a state of the high-speed mode. FIG. 10 is a diagram for explaining a gear transmission mechanism of the manual washing machine in the embodiment, and shows a state of a low speed mode (emphasis on a torque mode). 11 is a diagram for explaining a gear shifting mechanism of the manual washing machine included in the embodiment, in a state in which the ring gear and the first gear are kept separated from the driven gear together during a transition phase between the high speed mode and the low speed mode; . FIG. 12 is a diagram for explaining a structure in which a mode of a gear mechanism is switched by displacing an operation panel of an upper cover of the manual washing machine of the embodiment. FIG. 13 is a diagram for explaining the function of a button incorporated in the rotation center axis of the operation disc, and shows a state when it is positioned at the first and second positions of the operation disc. FIG. 14 is a diagram for explaining the function of a button incorporated in the rotation center axis of the operation disc, and is shown in a state when the first and second positions of the operation disc are shifted. FIG. 15 is a diagram for explaining a state where the buttons incorporated in the rotation center axis of the operation disk are located at the circular portions at both ends of the guide hole. FIG. 16 is a diagram for explaining a state in which the buttons are depressed when the buttons incorporated in the rotation center axis of the operation disc are located at the circular portions at both ends of the guide hole. FIG. 17 is a diagram for explaining a state in which the center axis of rotation of the operation disc is moved to the moving portion of the guide hole, and the state is shifted, following FIG. 16. FIG. 18 is a diagram for theoretically explaining that when the drum is rotated vertically around an axis extending in the horizontal direction as a center, it requires 5 times the operating force compared to the horizontal rotation around an axis extending in the vertical direction. FIG. 19 is an exploded view of a gear shifting mechanism in which the operating disc is raised and lowered to position the operating disc at a first position (emphasis on speed) or a second position (emphasis on torque). FIG. 20 is a schematic diagram showing a state of the gear shifting mechanism when the operating disc is positioned at the first position (emphasis on speed). FIG. 21 is a schematic diagram showing a state of the gear shift mechanism when the operating disc is positioned at the second position (emphasis on torque). FIG. 22 is a schematic diagram for explaining the relationship between the rotation central axis (circular cross-section) of the operation disc and the guide hole when the operation disc is positioned at the first position or the second position. FIG. 23 is a diagram for explaining the relationship between the rotation central axis (a slightly rectangular cross section) of the operation disc and the guide hole when the operation disc is moved from the first position to the second position or from the second position to the first position. Illustration. FIG. 24 is a diagram for explaining a state when the operation disk is positioned at the first position (emphasis on speed) in the gear transmission mechanism of another modification. FIG. 25 is a diagram for explaining a state when the operation disk is positioned at the second position (emphasis on torque) in a gear transmission mechanism according to another modification. FIG. 26 is a diagram for explaining a state where the operation disk is rotated counterclockwise to a second position (emphasis on torque) in a gear transmission mechanism according to still another modification. FIG. 27 is a diagram for explaining a state where the operation disc is rotated clockwise to the first position (emphasis on speed) in a gear transmission mechanism according to still another modification. FIG. 28 is a diagram for explaining a state where the operation disc is rotated counterclockwise to the second position (emphasis on torque) in the modification of the gear transmission mechanism of FIGS. 26 and 27. FIG. 29 is a diagram for explaining a state where the operation disc is rotated clockwise to the first position (emphasis on speed) in the modification of the gear transmission mechanism of FIGS. 26 and 27. Fig. 30 is a diagram for explaining "ramming" of a manual horizontal washing machine.

Claims (9)

A manual washing machine includes: a water tank having an opening at an upper end; a drum rotatably provided in the water tank; an upper cover to cover the opening at the upper end of the water tank; an operation portion rotatably provided in the water tank A cover; a power transmission member for transmitting the rotation of the operation part to the drum; and a speed change mechanism provided on a rotation central axis of the operation part and a rotation transmission shaft transmitted from the power transmission member to the drum The rotation speed of the rotation transmission shaft with respect to the rotation speed of the operation portion can be changed. The manual washing machine according to claim 1, wherein the transmission mechanism is formed by a ring gear formed on an inner surface of the operation portion, a first gear installed on a rotation central axis of the operation portion, and the rotation transmission The driven gear of the shaft is configured to be switched to a high-speed mode in which the ring gear meshes with the driven gear and a low-speed mode in which the first gear meshes with the driven gear by displacing the operating portion. The manual washing machine according to claim 2, wherein the transmission mechanism has a first position constituting the high-speed mode, a second position constituting the low-speed mode, and a migration section connecting the first position and the second position, by The migration part can limit the unintended displacement of the operation part and switch between the high speed mode and the low speed mode at the same time. The manual washing machine according to claim 3, wherein the ring gear and the first gear are configured to maintain the separated state from the driven gear when the operating portion is displaced while the rotation of the operating portion is stopped. While meshing smoothly with each other. The manual washing machine according to claim 1, further comprising: a first seat portion which is a bottom surface of the sink or formed on the bottom surface; and a second seat portion which is formed by an upright surface intersecting the bottom surface of the sink. Formed, wherein the manual washing machine can be switched between a first use mode and a second use mode, the first use mode is that the first seat portion is set on a horizontal plane and the rotation axis of the drum extends in the up-down direction In the second use mode, the second seat portion is disposed on a horizontal plane and the rotation axis of the drum extends in the lateral direction. The manual washing machine according to claim 5, further comprising: a drain port, which is located at the periphery of the second seat portion when the second seat portion is set at the second use form on a horizontal plane; a water supply port, which is When the second seat portion is set at the second use form on a horizontal plane, the second seat portion is arranged at a position far from the second seat portion; and a cover is used to close the drainage opening. The manual washing machine according to claim 5 or 6, wherein a first drainage hole is formed on a bottom surface of the water tank. The manual washing machine according to claim 7, wherein the first drainage hole is disposed away from the second seat portion. The manual washing machine according to claim 1 or 5, wherein a water-stop member is interposed between an inner surface of an outer peripheral portion of the upper cover and an outer peripheral upper end surface of the sink.