JPS6321515B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehydrating and washing machine in which a pulsator, which is eccentrically arranged at the bottom of the rotating tank, is driven to rotate through a gear mechanism arranged at the bottom of the rotating tank, in order to improve the washing effect. The objective is to reduce manufacturing costs by reducing the number of parts.

1 to 3 for the first embodiment of the present invention.
This will be explained with reference to the figures. First, in FIG. 1 showing the outline of the overall structure, 1 is an outer box, inside of which a water tank 3 is elastically suspended via a hanging rod 2 of an elastic support mechanism. A rotary tank 5 is disposed, for example, made of plastic and having a large number of dehydration holes 4 in its peripheral wall. Reference numeral 6 denotes a lid frame attached to the open upper surface of the outer box 1, which forms a laundry entrance/exit 7 approximately in the center, and has an operating box 8 erected at the rear thereof, and a time switch 9 installed in the operating box 8. is attached. Next, the second section showing the support structure of the rotary tank 5, etc.
In the figure, 10 is a housing fixed to the outer bottom of the water receiving tank 3, and 11 is a hollow dewatering shaft rotatably inserted and supported within the housing 10.
A connecting cylinder 12 is fitted into the upper end of the housing 10 so as to protrude from the housing 10. Reference numeral 13 denotes a washing shaft, which is rotatably inserted and supported within the dewatering shaft 11, and whose upper end protrudes upward through a sealing member 14 fitted into the upper end of the cylindrical body 12. Although not shown, the dewatering shaft 11 and the washing shaft 13 are connected to a motor via a clutch mechanism, and the rotational force of the motor is selectively transmitted through the action of the clutch mechanism. Reference numeral 15 denotes a reinforcing bottom plate of the rotary tank 5, which is fixed to the dewatering shaft 11 by fitting a fitting hole 16 formed approximately in the center into the cylinder 12 and tightening bolts to the flange 12a of the cylinder 12. ing. Incidentally, reference numeral 17 denotes a positioning hole formed in the reinforcing bottom plate 15, and this is formed at a portion separated from the fitting hole 16 by a predetermined distance. 1
Reference numeral 8 denotes a drive gear, which constitutes one side of a gear mechanism 19 that transmits the rotation of the washing shaft 13 to a pulsator, which will be described later, and is fixed to the upper end of the washing shaft 13 with a screw. On the other hand, a recess 20 for accommodating a pulsator is formed at the bottom of the rotating tank 5 at a predetermined offset from the center. Then, the bottom case part 22a of the storage case 22, which has an annular rib 21 erected around the bottom part of the recess 20, is connected to the inclined wall 20a of the inner peripheral edge of the bottom part of the recess 20, so that the rotary tank 5 is connected to the bottom case part 22a. It is formed integrally with the bottom part. 2
Reference numeral 3 denotes a plastic case body with an open bottom surface corresponding to the lid side of the storage case 22, which is attached to the bottom case part 22a through a packing 24 and fixed to the bottom of the recess 20 with screws 25. There is. Reference numeral 26 denotes a receiver portion formed approximately at the center of the case body 23 of the storage case 22, 27 represents a container portion formed approximately at the center of the bottom case portion 22a of the storage case 22 (coinciding with the center of the recess 20), and 28 is an internal gear to which a shaft 29 is integrally attached, for example, by insert molding, and this internal gear 28 is connected to the driving gear 18.
It also corresponds to a driven gear constituting the gear mechanism 19, and its pivot 29 is connected to the receiving cylinder portion 2.
6 and the container portion 27 via bearings 30 and 31, and is rotatably supported within the storage case 22. 32 is the bottom case part 22a of the storage case 22
A through hole is formed at a portion a predetermined distance away from the container portion 27, and is formed to have a larger diameter than the drive gear 18 so that the drive gear 18 can be inserted freely during assembly. A sealing member 33 is provided on the upper surface of the case body 23 to provide a water seal between the case body 23 and the pivot shaft 29. 34 is a pulsator, and this is its boss part 3
4a protrudes upward from the storage case 22.
9 and is fixed with a screw 35 via a washer 34b, and a shielding wall 36 is provided on the outer peripheral side of the boss portion 34a to prevent foreign matter such as herring from entering near the sealing member 33. It is installed protrudingly. Thus, the rotating tank 5 configured in this manner has a gasket 37 interposed between the peripheral edge of the through hole 32 and the reinforcing bottom plate 15 fixed to the cylindrical body 12, and the container portion 27 of the bottom case portion 22a. is fitted into the positioning hole 17 of the reinforcing bottom plate 15 and fixed to the reinforcing bottom plate 15 with bolts 38, so that it is directly connected to the dewatering shaft 11.

Next, the procedure for assembling the above structure will be described based on FIG. First, place the housing 1 on the outer bottom of the water tank 3.
0 is fixed, a reinforcing bottom plate 15 is fixed to the cylindrical body 12 at the upper end of the dewatering shaft 11, and a drive gear 18 is attached to the upper end of the washing shaft 13 to form a drive side unit A. On the other hand, before connecting the rotary tank 5 to the dehydration shaft 11, the lower end of the pivot 29 of the internal gear 28 is inserted into the container section 27 at the bottom of the recess 20 via the bearing 31, and then The axis 29
The case body 23 is inserted into the upper half through the bearing 30, and the case body 23 is positioned so that the bearing 30 is concentric with the bearing 31, and the case body 23 is watertightly connected to the bottom case part 22a through the packing 24. The internal gear 28 is fixed to the bottom of the recess 20 as shown in FIG. 28 constitutes a driven side unit B. After that, the driven side unit B is connected to the driving side unit A by inserting the rotary tank 5 into the water receiving tank 3 with the gasket 37 attached to the bottom, and placing it inside the storage case 22. drive gear 1 through its through hole 32.
8, the container portion 27 is fitted into the positioning hole 17 of the reinforcing bottom plate 15, and is fixed to the reinforcing bottom plate 15 with bolts 38. As a result, the assembly is completed, the drive gear 18 is positioned inside the storage case 25 and meshes with the internal gear 28, and the rotation of the washing shaft 13 is transmitted to the pulsator 34 via the gear mechanism 19. The rotation of the shaft 11 is directly transmitted to the rotating tank 5.

As described above, in this embodiment, since the bottom case part 22a of the storage case 22 is integrally formed with the bottom part of the rotating tank 5, the number of parts can be reduced, and the number of molding and assembly steps can be reduced. Manufacturing costs can be reduced. Furthermore, if one of the lid side and the bottom side of the storage case 22, for example, the bottom case part 22a is integrally formed with the bottom part of the rotary tank 5 as in this embodiment, the bottom case part 22a as in this embodiment By forming the through hole 32 in the portion 22a through which the driving gear 18 is inserted, the driving side unit A is first constructed on the water receiving tank 3 side of the outer box 1, and is easy to handle even before it is placed inside the water receiving tank 3. It is possible to form the driven side unit B using the rotary tank 5 as a single item, and then to connect both units A and B, thereby making it possible to perform the assembly with good work efficiency. By the way, for models that do not have a through hole for driving gear insertion in the bottom case part that is integrated with the bottom part of the rotary tank, first attach the rotary tank to the dewatering shaft that protrudes into the water receiving tank, and then attach the outer box in this state. The work required to look into the rotating tank from the outside and sequentially install the drive gear, driven gear, case body, pulsator, etc., and the workability of this method is comparable to that of this example. It's something that doesn't exist. In addition, during repair and inspection, both units A and B can be separated to allow each unit to work independently, resulting in excellent workability.In addition, for example, when a failure occurs in the pivot portion of the pivot 29 or when the internal gear 28 is damaged, etc. If the entire driven side unit B including the rotating tank 5 is replaced, the repair work can be completed more quickly. Furthermore, especially in this embodiment, during assembly, the rotating tank 5 can be fixed in a predetermined positional relationship with respect to the cylinder 12 by fitting the container portion 27 of the rotating tank 5 with the positioning hole 17 of the reinforcing bottom plate 15. The distance between the axes of the driving gear 18 and the internal gear 28 is automatically determined accurately, and efficient rotation transmission by the gear mechanism 19 can be achieved, and centering of the rotary tank 5 can be easily performed.

Of course, in this embodiment, since the gear mechanism 19 is covered by the storage case 22, the washing water enters the gear mechanism 19, and foreign matter such as sand and mud gets caught between the gears, causing the gear mechanism 19 to be damaged. Needless to say, it is possible to prevent locking or abnormal wear.

FIG. 4 and FIG. 5 show a second embodiment of the present invention, in which the same parts as in the first embodiment are given the same reference numerals and explanations will be omitted, and only the different parts will be explained. Reference numeral 39 denotes a circular case body formed integrally with the bottom part of the rotary tank 5 so that the bottom of the recess 20 bulges upwards, and the open lower surface of this is closed by the reinforcing bottom plate 15 to form the storage case 40. ing. 41
A receiving member is attached to a substantially central portion of the storage case 40 on the reinforced bottom plate 15, and a pivot 29 of an internal gear 28 is pivotally supported on this receiving member via a bearing 31. 4
Reference numeral 2 denotes a through hole formed at a predetermined portion of the bottom of the storage case 40 (corresponding to approximately the center of the reinforcing bottom plate 15), and this hole is formed to have a larger diameter than the drive gear 18 so that the drive gear 18 can be inserted freely during assembly. It has been done.

According to the above configuration, the internal gear 28 is housed in the case body 39 from the bottom of the rotary shaft 5, and the pivot 29 is inserted into the receiving cylinder portion 26 of the case body 39, and the receiving member 41 Position the reinforcing bottom plate 15 with the attached screws 43 so that the lower end of the pivot 29 is inserted into the receiving member 41 via the bearing 31 and the bearing 31 is concentric with the bearing 30.
is fixed to the outer bottom of the rotating tank 5 to constitute a driven side unit B. After this, this driven unit B
is connected to the drive side unit A consisting of the drive gear 18 attached to the washing shaft 13 with bolts 44, and then the pulsator 34 is attached to the pivot 29 to complete the assembly.

According to this embodiment, the case body 39 corresponding to the lid side of the storage case 40 is integrally formed at the bottom part of the rotating tank 5, and the bottom side of the storage case 40 uses the reinforcing bottom plate 15. Therefore, the number of parts can be further reduced and manufacturing costs can be reduced. Also in this embodiment, the storage case 40
Since the through hole 42 for inserting the drive gear 18 is formed in the reinforced bottom plate 15 corresponding to the bottom side of the unit, the assembly work is carried out separately for the driven side unit B and the drive side unit A, as in the first embodiment. Finally, the assembly can be completed by combining both units A and B and attaching the pulsator 34, resulting in excellent assembly workability. Moreover, especially in this embodiment, when assembling the driven unit B, all the parts can be attached from the outer bottom side of the rotary tank 5, so the work of inserting one's hand into the rotary tank 5 can be reduced. This makes it possible to further improve assembly work efficiency.

6 and 7 show a third embodiment of the present invention. The same parts as those in the first embodiment are given the same reference numerals and explanations are omitted, and only the different parts will be explained. is a case body, which is made entirely of a transparent material, for example, so that the inside of the storage case 25 can be seen through. An opening 47 is formed in the upper end plate portion of the internal gear 46 so that the meshing portion between the drive gear 18 and the internal gear 46 can be viewed from above. With this configuration, the meshing state between the drive gear 18 and the internal gear 46 can be visually observed during assembly, making the work even easier.

In addition, in order to ensure smoother meshing of the gear mechanism 19 during assembly, each tooth 4 of the drive gear 48 and the internal gear 49 should be
8a, 49a when assembling the mating teeth 49.
It is effective to form a chamfer in the shape of a slope so that the tooth thickness gradually decreases at the end on the side where engagement with a and 48a starts.

In addition, the present invention is not limited to the above-described drawings and embodiments; for example, there may be a plurality of gears on the driven side, or it may be an external gear, etc., without departing from the scope of the invention. It can be modified and implemented.

As described above, since the gear mechanism is housed in the storage case, the present invention not only prevents foreign matter from entering the gear mechanism and protects the gear mechanism, but also protects the gear mechanism by closing the lid of the storage case. One of the side and bottom sides is formed integrally with the bottom part of the rotary tank, and the bottom side is formed with a through hole through which the drive gear provided on the washing shaft is inserted, reducing the number of parts and molding. It is possible to provide a dehydrating/washing machine that can reduce man-hours and assembly man-hours, and can also reduce manufacturing costs.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a partially cutaway side view of the whole, FIG. 2 is an enlarged vertical sectional view of the main part, and FIG. 3 is the same. 4 is a view equivalent to FIG. 2 showing the second embodiment, FIG. 5 is a view equivalent to FIG. 3, and FIG. 6 is a view equivalent to FIG. 3 showing the third embodiment. FIG. 7 is a perspective view of the same gear mechanism, and FIG. 8 is an exploded perspective view showing a modification of the gear mechanism. In the figure, 1 is the outer box, 3 is the water tank, 5 is the rotating tank, 1
1 is a dehydration shaft, 13 is a washing shaft, 15 is a reinforced bottom plate, 1
8 and 48 are drive gears, 19 is a gear mechanism, 22 and 40 are storage cases, 23, 39 and 45 are case bodies, 32 and 42 are through holes, 46 and 49 are internal gears (driven gears), 32 and 42 are The through hole 34 is a pulsator.

Claims (1)

[Scope of Claims] 1. A pulsator disposed at the inner bottom of a rotating tank is rotationally driven via a gear mechanism consisting of a drive gear provided at the upper end of a washing shaft driven by a motor and a driven gear meshing with the drive gear. A storage case that is watertight with respect to the rotating tank and houses the gear mechanism is arranged at the inner bottom of the rotating tank, and one of the lid side and the bottom side of the storage case is arranged at the bottom of the rotating tank. 1. A washing machine for dehydrating and washing, characterized in that the storage case is formed integrally with the storage case, and a through hole is formed on the bottom side of the storage case through which the drive gear is inserted. 2. Claim 1, characterized in that the storage case is configured such that its lid side is formed integrally with the bottom part of the rotating tank, and its open lower surface is closed by a reinforcing bottom plate of the rotating tank. A dehydrating and washing machine described in . 3. The storage case according to claim 1 or 2, wherein at least a part of the storage case is formed of a transparent material so that the meshing portion of the driving gear and the driven gear can be seen through. Washing machine with dehydration function. 3. The teeth of at least one of the drive gear and the driven gear are chamfered in an inclined plane so that the tooth thickness gradually decreases at the end on the side where meshing with the other tooth starts during assembly. A dehydrating and washing machine according to any one of claims 1 to 3.