JPH0317836Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a washing machine.

(b) Conventional technology A washing machine that corresponds to the conventional example is
This is shown in the publication (D06F 17/06), and will be explained based on FIG.

101 is a washing tub installed inside the machine frame 102;
3 is a rotary blade pivotally supported at the center of the bottom of the washing tub 101; 104 is a pulley 105 attached to the rotary blade 103;
A motor 106 is connected to the motor, and 107 is a holding plate detachably attached to the tip of a rod 108 protruding from the center of the rotary blade 103, and has a back blade 109 on the lower surface.

Then, the rotary blade 1 is driven by the motor 104.
Stir the laundry by reversing 03,
Moreover, the pressing plate 107 prevents the laundry from floating up. Further, the back blade 109 of the presser plate 107 also forms a water flow in the tank.

(c) Problems to be solved by the invention In the conventional example, the presser plate is intended to prevent laundry from floating, and the presser plate is used when washing a small amount of laundry, for example. 107
It is of no use when washing at a water level lower than that, and does not necessarily contribute to improving detergency.

In view of such problems, the present invention has been developed by selectively attaching aileron blades to the rotary blades of washing machines.
This allows washing to be done in a manner appropriate to the type of laundry and prevents the aileron from rattling.

(d) Means for Solving the Problems The washing machine of the present invention has a wing boss having a non-circular shaft hole protruding from the center of the rotor blade, and the shaft hole located at the center of the back surface of the aileron. The shaft hole and the shaft part are formed into a tapered shape that widens upward, and the degree of inclination is changed from the middle, and the degree of inclination of the upper inclined surface is made gentler than that of the lower part. This is the setting.

(e) Effect: In other words, if the degree of inclination of the shaft hole and the shaft part is changed from the middle and the degree of inclination of the upper slope is set to be gentler than that of the lower side, the degree of inclination can be kept constant even if a dimensional error occurs, for example. The contact area between the two is larger, especially on the upper inclined surface, and wobbling is suppressed accordingly.

(f) Example A general fully automatic washing machine will be explained based on FIG. 7.

1 is a machine frame, 2 is an operating section provided at the rear of the upper part of the machine frame 1, 3 is an outer tank installed inside the machine frame 1, 4 is installed inside the outer tank 3, and dewatering holes 5 are provided around the periphery. 6 is a rotating blade disposed at the bottom of the washing tub 4, 7 is a drive motor, which is connected to the washing tub 4 and the rotating blade 6 via a power transmission mechanism 8, and rotates during washing. The blades 6 are reversed at a predetermined period, and both the washing tub 4 and the rotary blades 6 are rotated in one direction at high speed during dewatering.
9 is a drain port provided at the bottom of the outer tank 3, 10 is a drain solenoid valve, 11 is a drain hose, and 12 is a water supply channel 13
A water supply solenoid valve 14 provided therein is an air trap provided at one corner of the bottom of the outer tank 3, and is connected to a pressure switch 15 in the operating section 2 via a pressure hose 16.

Such a fully automatic washing machine is controlled by a microcomputer, hereinafter referred to as microcomputer 1.
The control mechanism of the washing machine centered on the microcomputer 7 (hereinafter referred to as microcomputer) will be explained based on FIG.

The microcomputer 17 includes a CPU 18, a RAM 19,
It is composed of a ROM 20, a timer 21, a system bus 22, and input/output ports 23-28. Said
The CPU 18 is composed of a control section 29 and a calculation section 30. The control section 29 takes out and executes instructions, and the calculation section 30 receives control signals from the control section 29 during the instruction execution stage. Performs arithmetic processing such as binary addition, logical operations, increase/decrease, and comparison on data provided from input devices and memory. The RAM 19 is for storing data regarding the washing machine, and the ROM 20 is for storing data related to the washing machine.
The means for operating the washing machine, the setting of conditions for judgment, the rules for processing various information, etc. are loaded in advance.

The input ports 23 to 25 include an input key circuit 31 made up of the various operation keys, a detection circuit 31 such as a water level detector and a top cover safety switch that is linked to opening and closing of the top cover, and a detection circuit 31 that allows washing at a time desired by the user in advance. A signal is input from the time reservation setting circuit 32, etc., which sets the time reservation setting circuit 32 to automatically start, and based on this information, the
An LED drive circuit 34 consisting of a group of LEDs, a buzzer circuit 35 for process end notification or abnormality notification, a load drive circuit 36 consisting of a bidirectional thyristor, etc.
A control signal is sent to the The load drive circuit 3
6 is a left and right rotation circuit 37 of the rotor blade drive motor 7 according to a control signal from the microcomputer 17;
38, controls the operation of the water supply solenoid valve drive circuit 39 and the drainage solenoid valve drive circuit 40; 41 is a power supply circuit that supplies voltage to the microcomputer 17, and 42 is a reset signal generating circuit.

Now, in the present embodiment, in such a fully automatic washing machine, instead of the rotary blade 6, an auxiliary blade can be attached to the upper part of the rotary blade, resulting in a double-blade structure, and the rotor blade and the auxiliary blade are connected. I try to wash the laundry in between. The following will explain based on FIGS. 1 to 6.

43 is a blade shaft to which the driving force from the drive motor 7 is transmitted, and a rotary blade 44 is attached thereto.
The rotary blade 44 has a large diameter that occupies most of the bottom surface of the washing tub 4, and has a planar shape, and has large and small blades 45 provided at equal intervals on the top surface, and a triangular prism-shaped blade in the center. A boss 46 is provided protrudingly. A shaft hole 47 having a triangular cross section is formed in the wing boss 46 . The shaft hole 47 has an upwardly expanding taper, and the slope of the upper part 48a is gentler than that of the lower part 48b (x degrees: about 2 to 4 degrees) is set. Three locking holes 49 are formed at equal intervals along the circumferential direction at the bending point 48.

Reference numeral 50 denotes an auxiliary wing that is detachably attached to the rotary blade 44, and has back blades 51 formed radially on its back surface, has a diameter smaller than that of the rotary blade 44, and has an upper surface extending from the center to the periphery. It gradually slopes downward towards the end. In addition, there are also feathers 5 on the top surface.
2... are formed radially.

A cylindrical body 53 that protrudes in the vertical direction is formed in the center of the aileron 50, the upper protrusion of the cylindrical body 53 has a cylindrical shape as a knob 54, and the lower protrusion has the wing boss. The shaft portion 55 fitted into the shaft hole 47 of 46 has a triangular cylinder shape. The shaft portion 55 is provided with an upwardly widening taper in accordance with the shaft hole 47, and the degree of inclination of the upper and lower portions of the shaft portion 55 similarly changes from a point corresponding to the bending point 48 as a boundary.

The shaft portion 55 has a locking hole 4 at a location corresponding to the locking hole 49 when the shaft portion 55 is fitted into the shaft hole 47.
A through hole 56 having the same diameter as 9 is opened, and a flange 57 extending in the circumferential direction extends inward from the upper part of the through hole 56. As mentioned above, the shaft portion 55 has different degrees of inclination with the through holes 56 as boundaries, and the inner edge of the flange 57 is
It is substantially flush with the lower end side of the through hole 56....

58... is a locking pin, and the through hole 56...
It is composed of a pin portion 59 with a smaller diameter and a head portion 60 with a larger diameter.The pin portion 59 is inserted into the through hole 56 from inside, and the head portion 60 is inserted into the flange 57.
and the lower end side of the through hole 56... The locking pins 58 are configured such that when inserted into the through holes 56, the tips 59a of the pin portions 59 pass through the through holes 56 and protrude outward from the shaft portions 55. , an inclined portion 61 is formed by cutting out the upper part of this tip 59a.

Reference numeral 62 denotes a pressing body having a T-shaped cross section, and includes a pressing portion 63 that matches the inner diameter of the knob portion 54, and the pressing portion 6.
The length of the boss portion 64 extends from the upper surface of the knob portion 54 to the position of the through hole 56. Then, the pressing body 62
The spring 65 is inserted from the upper surface of the holder.
The spring 65 constantly urges the pressing portion 63 upward between the back surface of the pressing body 63 and the flange 57. On the other hand, 66 is a regulating body inserted from the lower surface of the shaft portion 55 and screwed onto the boss portion 64 of the pressing body 62, and includes a fitting cylinder portion 67 into which the tip of the boss portion 64 is fitted; The head portion 60 of the locking pin 58 protrudes from the fitting cylinder portion 67.
A retaining portion 68 is formed at the lower end of the retaining portion 68 to prevent the retaining pins 58 from coming off inward, and each of the heads 60 and A locking pin 58 is provided on the inner surface of the shaft portion 55.
and a regulating portion 70 that abuts each of the plurality of protrusions 69 provided at the same position from below and restricts upward movement of the pressing body 62 by the spring 65. Further, an inclined surface 71 that is continuous from the fitting cylinder part 67 is formed at the upper part of the retaining part 68 . This regulating body 66 allows the pressing portion 6 of the pressing body 62 to
3 is held substantially flush with the upper surface of the knob 54, and the locking pins 58 are held with their tips 59a protruding outward.

Now, reference numeral 72 denotes an annular rib formed near the base of the shaft portion 55, which has a triangular shape like the shaft portion 55, and forms an annular groove 73 together with the shaft portion 55. Thus, when the shaft portion 55 is fitted into the shaft hole 47, the upper end portion 4 of the wing boss 46
6a is inserted into the annular groove 73 from below. In this state, the lower end of the rib 72 contacts the outer surface of the wing boss 46, supports the wing boss 46 from both sides in cooperation with the shaft portion 55, and supports the auxiliary wing 5.
Prevents wobbling of 0. 74... are three support ribs formed at equal intervals in the annular groove 73, which contact the upper end portion 46a of the wing boss 46,
Supports the aileron 50 against pressure from above.

In such a configuration, the aileron 5 of FIG.
In order to remove the auxiliary blade 55 with the auxiliary blade 55 attached to the rotary blade 44, press the pressing body 62 as shown in FIG.
The pressing portion 63 is pushed down from above against the biasing force of the spring 65. Then, the regulator 6
6 is lowered, the locking pins 58... are released from contact with the retaining portion 68, and the locking pins 58...
... becomes movable inward of the shaft portion 55. Therefore,
In this state, when the aileron 50 is pulled upwards by holding the knob 54, the locking pins 58 are naturally pushed inward by the action of the inclined portions 61 of the locking pins 58. The tips 59a of the locking pins 58 are no longer locked in the locking holes 49 of the wing boss 46, and the shaft portion 55 can be pulled out from the shaft hole 47.

Note that even if the locking pins 58 move inward, the head 60 comes into contact with the tip of the fitting cylinder portion 67 of the regulating body 66 at a certain point, so that the locking pins 58... 58... will not fall off.

Then, in order to attach the aileron 50, it is sufficient to perform the reverse operation, and the shaft portion 55 is fitted into the shaft hole 47 while the pressing body 62 is pressed down. At this time, since the shaft hole 47 has a tapered shape that widens upward, the locking pin 58...
...is pushed in naturally. When the shaft portion 55 is completely fitted, the through hole 56 is inserted into the locking hole 49.
Since they match, the pressure on the pressing body 62 is released. Then, the pressing body 62
The regulating body 66 moves upward at the same time due to the urging force of the regulating body 66 . When the regulating body 66 moves upward, the locking pins 58 are pushed outward by the inclined surface 71 thereof, and their inward movement is finally regulated by the retaining portion 68. In this state, the tip portions 59a of the locking pins 58... are connected to the through holes 56...
It protrudes outward from... and is located inside the locking hole 49.... Therefore, when the aileron 50 is installed, the locking pins 58... and the locking holes 49...
The locking prevents the aileron 50 (shaft portion 55) from coming off upward, and also prevents the locking pin from locking into the locking hole and the non-circular (triangular) shape of the shaft hole 47 and the shaft portion 55. As a result, rotation in the rotational direction is prevented, and the rotary blade 44 and the auxiliary blade 50 rotate synchronously.

In such a washing machine, to wash heavily soiled small items such as socks and work gloves, these small items are placed between the rotary blades 44 and the auxiliary blades 50, and the rotary blades 44 are auxiliary. It is reversed left and right together with the blade 50 at low speed and in a short period. Then, the back blades 51 of the auxiliary blades 50 and the blades 45 of the rotary blades 44 can scrub the area more strongly.

Further, since the upper surface of the aileron 50 is inclined, even if the small items are placed on the upper surface of the aileron 50, the small items will descend along the upper surface, and the space between the aileron 50 and the washing tub 4 will be lowered. From the ailerons 50 to the rotor blades 44
can be quickly guided.

Note that the water level in this case may be up to the upper surface of the aileron 50, which is naturally lower than the lowest water level during normal washing.

When washing ordinary laundry other than the heavily soiled small items, only the rotary blade 44 is used to stir the washing as in the conventional manner.

As described above, the auxiliary blades 50 and rotary blades 44 employed in the washing machine of this embodiment have the following effects.

(a) The annular rib 72 and the shaft portion 55 allow the wing boss 4 to
Since the upper end portion 46a of the auxiliary blade 6 is supported from both sides, the base of the shaft portion 55 is protected against external pressure applied to the auxiliary blade 50, and the auxiliary blade 50 is prevented from falling off.

(b) By changing the taper of the shaft hole 47 and shaft portion 55 of the wing boss 46 midway and making the upper part a gentle slope, distortion during resin molding (this distortion occurs in most resin molded products) Even if the diameter of the shaft hole 47 is expanded or the shaft portion 55 is contracted, the contact area on the upper gentle slope is larger than that where the taper remains unchanged. Therefore, a gap due to a dimensional error is less likely to occur between the shaft hole 47 and the shaft portion 55, so that shaking of the aileron can be prevented.

(c) Since the shaft hole 47 and the shaft portion 55 have a triangular cross section, the connection between the two in the rotational direction is strong.
In addition to the triangular cross section, the cross section may be square, and involute, serration, etc. may also be considered, and in short, any non-circular shape may be used.

(d) Since the shaft portion (convex) is fitted into the shaft hole 47 (concave), the locking pins 58 are difficult to come off even if vertical pressure is applied to the aileron 50. If the relationship between the concave and convex portions were reversed, the shaft portion would be bent when the pressure was applied, and the locking pin would easily disengage from the locking hole.

(g) Effects of the invention In the washing machine of this invention, heavily soiled small items such as socks and work gloves are placed between the rotary blades and the aileron blades, and the rotary blades and back blades of the aileron blades scrub the small items more strongly. It can exert a strong frictional effect on small items, and is highly effective in cleaning these small items.

In addition, the structure has been designed to prevent the formation of gaps that would cause rattling between the shaft hole and the shaft, so when washing,
The rattling of the ailerons is suppressed and durability is improved.

[Brief explanation of drawings]

Figures 1A and 2B are side sectional views showing the attachment and detachment mechanism of the aileron to the rotor in the washing machine of the present invention, Figure 2 is a sectional view of the main part of the washing tub, and Figure 3 is the side of the aileron. 4A is a sectional view taken along line P-P', FIG. 4B is a perspective view of the locking pin, FIG. 5A is a plan view of the aileron, FIG. A plan view of the rotor blade, Fig. 7 is a cross-sectional diagram of the main parts of a general fully automatic washing machine, and Fig. 8 is a block circuit diagram of the control mechanism. Fig. 9
The figure is a sectional view of main parts of a conventional washing machine. 4... Washing tub, 44... Rotating blade, 46... Wing boss, 47... Shaft hole, 50... Aileron, 51... Back blade, 55... Shaft portion.

Claims (1)

[Scope of utility model registration request] Auxiliary blades are removably attached to the upper surface of the rotary blades disposed at the bottom of the washing tub, and the laundry is placed between the aileron blades and the rotary blades, and the back blades of the aileron blades and the rotary blades are connected to each other. a blade boss having a non-circular shaft hole protruding from the center of the rotary blade;
A shaft portion that fits into the shaft hole is protrudingly provided at the center of the back surface of the aileron, and the shaft hole and shaft portion are formed into a tapered shape that widens upward, and the degree of inclination is changed from the middle. A washing machine characterized in that the degree of inclination of the inclined surface is set to be gentler than that of the lower part.