JPS6118867Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to washing machines, especially those with a power frequency of 50
The purpose is to keep the washing efficiency constant by rotating the pulsator at approximately the same number of rotations even if the speed changes from Hz to 60Hz.

Generally speaking, a washing machine transmits rotation by attaching a pulley to each rotating shaft of the motor and pulsator and stretching a belt between the pulleys, but the power supply frequency is 50
When changing from Hz to 60Hz, it is necessary to replace one of the pulleys in order to keep the pulsator rotation speed approximately the same. If the distance between the shafts is to be kept constant even if the pulleys are changed, the belt must also be changed, and conversely, if the belt is to be used in common, the distance between the shafts must be changed. Conventionally, in order to change the distance between the shafts, the motor mounting hole was made into a long hole, and the motor mounting position was adjusted within the range of this long hole. However, when installing in a long hole, it is necessary to tighten the belt and perform the installation work under tension, which is especially difficult when installing with bolts and nuts because the work must be done from above and below. When an impact was applied, the mounting position could easily shift and the tension on the belt could loosen. The present invention has been developed in view of the above points, and will be explained below based on the drawings.

Reference numeral 1 denotes a resin base for fixing the motor, on which a pair of mounting stands 2, 2 are integrally erected at approximately the same distance from the pulsator (not shown), and between these mounting stands 2, 2 and between the pulsator. One support stand 3 is integrally installed on the side near the. Reference numerals 4, 4, 5, and 5 denote mounting holes drilled in the mounting bases 2, 2, which are divided into those 4, 4 that are close to the pulsator and those 5, 5 that are far from the pulsator, and all of them are holes for tapping. Reference numeral 6 denotes a support shaft cut and raised from a portion of the support base 3 close to the pulsator, and 7 is an engagement protrusion formed protrudingly from a portion of the support base 3 close to the mounting base.

8 has a semicircular plate shape, and the center part of the circle is connected to the above-mentioned support shaft 6.
The adjustment body is rotatably attached to the adjustment body, and its upper surface is divided into four parts at each predetermined angle of rotation, and the height of the divided upper surfaces is sequentially changed to form step-like support surfaces 9... A recess 10 is formed on the periphery of the engaging protrusion 7 to engage with the engaging protrusion 7 each time the engaging protrusion 7 is rotated. Incidentally, this adjustment body 8 is taken together when the base 1 is molded.

11 is a motor for washing, and a pulley 12 is attached to the rotating shaft.
At the same time, a belt 13 is stretched between this pulley 12 and a pulley on the pulsator side (not shown), and support arms 14, 14, 15, 15 are provided protruding from the bracket in four directions on the circumferential side. ing. A pair of opposing support arms 14, 14 are located on the mounting bases 2, 2, and one support arm 1 near the pulsator is located on the mounting bases 2, 2.
5 is located on the support stand 3, and the support arm 1
A U-shaped groove is formed at the tip of the support arm 15, and a fitting hole is formed at the tip of the support arm 15.

16 is a cylindrical anti-vibration rubber with a larger diameter at the bottom.
A reduced diameter part is provided at the top and this part is attached to the support arm 1.
It fits into the U-shaped grooves 4 and 14.

When installing the motor 11, fit the lower part of each anti-vibration rubber 16 into each mounting base 2 from above, insert the tapping screws 17 through the anti-vibration rubber 16 from above through the rubber presser 18, and then insert the tapping screws 17 into the anti-vibration rubber 16 through the mounting holes 4 or the mounting bases 2 from above. Hole 5
Screw into. Thus, the motor 11 is mounted on the mounting base 2,
2, but its rotation axis is attached to the mounting base 2,
When screwed into the mounting holes 4 and 4 of 2, mark A in the diagram.
When screwed into the mounting holes 5, 5, it is located at point B in the figure, and when screwed into the mounting holes 4, 5, it is located at point C, respectively. Therefore, if the power supply frequency is 50
Hz or 60Hz, use the belt 13 in common and replace the pulley 12 or the pulley on the pulsator side, but select the shaft center as A, B, or C and change the distance between the shafts accordingly. Can be done.

A cushion 19 is fitted into a fitting hole of the support arm 15, and is supported in contact with one of the support surfaces 9 of the adjustment body 8. Then, the adjustment body 8 is rotated to change the support height of the motor 11, thereby changing the inclination of the motor 11, finely adjusting the distance between the axes, and adjusting the tension of the belt 13. When the adjustment body 8 is rotated, the engagement protrusion 7 engages with one of the recesses 10 on each support surface 9, and semi-fixes this fine adjustment position.

As described above, in the washing machine according to the present invention, the mounting base has a mounting hole close to the pulsator and a mounting hole far from the pulsator, and the motor is fixed to one of the mounting holes, so even when belt tension is applied, the mounting position can be fixed. This makes the work easier, and the belt does not loosen because the mounting position changes easily due to impact. Also, by installing in a predetermined mounting hole, it becomes difficult to make fine adjustments such as those made with long holes, but as a result, we have provided an adjustment body that adjusts the inclination of the motor, making it possible to make fine adjustments to the distance between the shafts. This can be done by changing the inclination of the motor, and since the motor is also supported by the adjusting body, the motor can be stably supported at three points.

[Brief explanation of the drawing]

Figure 1 is a plan view of the main parts of the washing machine according to the present invention.
FIG. 2 is a sectional view of the main part, FIG. 3 is a sectional view taken along the - line in FIG. 1, and FIG. 4 is an explanatory diagram of the motor installed state. 1...Base, 2...Mounting stand, 3...Support stand,
4... Mounting hole close to the pulsator, 5... Mounting hole far away, 8... Adjusting body, 9... Support surface, 11... Motor, 12... Pulley, 13... Belt, 17...
Tapping screw.

Claims (1)

[Scope of utility model registration request] In the case where the rotation of the motor is transmitted to the pulsator by a belt common to a 50Hz pulley or a 60Hz pulley, the base that fixes the motor has a base that straddles the line connecting the motor and pulsator and is close to the pulsator. A pair of mounting bases each having a mounting hole and a distant mounting hole are formed, and a support base located between these mounting bases and on the above-mentioned line, and the motor can be mounted at one of the mounting holes of the mounting base. A washing machine characterized in that the support base is provided with an adjustment body that abuts and supports the motor from below and adjusts the height of the support.