JP3585667B2 - Drum type washing machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drum type washing machine in which a washing and dewatering drum rotates about a horizontal axis.
[0002]
[Prior art]
Generally, a drum type washing machine has an outer tub supported by a suspension in a main body of the washing machine, and a driving motor inside the outer tub, which is rotatably controlled about a horizontal axis to form a washing and dewatering drum. It has a tub, and the laundry can be taken in and out from the slot by opening the front door.
[0003]
[Problems to be solved by the invention]
The inner tub, which is the washing tub of a drum-type washing machine, is different from a normal washing machine that is put in and out from above from the place where it rotates around the horizontal axis in terms of structure. The height is only about 480 mm, which is not desirable in terms of usability, such as the need to bend the waist greatly when taking in and out the laundry.
[0004]
Accordingly, it is an object of the present invention to provide a drum type washing machine that facilitates taking in and out of laundry and suppresses vibration.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a washing machine main body, an outer tub supported by a suspension, and a drive motor inside the outer tub, which is rotatably controlled about a horizontal axis by a drive motor, and can be opened and closed. A drum-type washing machine having an inner tub having an input port for taking in and out of clothes through a door, wherein the position of the input port is raised below a suspension supporting the outer tub and at a lower portion of the washing machine main body. A main body supporting portion having an anti-vibration function is provided.
[0011]
In such a configuration, the position of the insertion opening is increased by the main body support portion, so that the laundry can be easily taken in and out. In addition, the resonance vibration at the time of starting dehydration is suppressed to a small level by the main body support having the vibration isolating function .
[0012]
Further, according to the present invention, a clothes is provided from a door which is rotatably controlled about a horizontal axis by a drive motor inside the outer tub and which can be opened and closed, in an outer tub supported by a suspension in the washing machine body. A drum-type washing machine having an inner tub having an inlet for taking in and out, wherein the washing machine main body is disposed below a suspension supporting the outer tub , and a main body supporting portion for increasing the position of the inlet is provided. It is installed on a support base via a supporting leg portion made of rubber, and the support base of the main body support portion is vertically movably supported via a spring.
[0013]
As a preferred embodiment, the main body of the washing machine and the main body support portion are formed in an integral shape.
[0014]
According to this configuration, the position of the insertion port is increased by the main body support portion, so that the laundry can be easily taken in and out, and the merit of using the main body support portion by the user can be obtained. Further, during the spin-drying operation, of the vibration system generated, particularly the vibration transmitted to the floor can be reduced by a spring that supports the support base so as to be vertically movable.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS.
[0017]
In FIG. 1, reference numeral 1 denotes a washing machine main body of a drum type washing machine 9 in which a position D of an opening / closing door 7 from a floor surface 5 is raised by H by a main body supporting portion 3 provided at a lower portion. Inside the washing machine main body 1, an outer tub 13 supported by a suspension 11 and a door 7 which is disposed inside the outer tub 13 and is rotatably controlled about a horizontal axis by a drive motor 15 and can be opened and closed. An inner tub 19 serving as a dehydration and washing tub having an input port 17 for putting clothes in and out is provided.
[0018]
The opening / closing door 7 is arranged on the front surface of the washing machine main body 1 and can be opened and closed with the hinge 21 as a fulcrum.
[0019]
The suspension 11 includes a cylinder 26, a piston 23 urged by a spring 24 and slidable up and down with respect to the cylinder 26, and a piston rod 25 extended from the piston 23 to the outside of the cylinder 26. Reference numeral 26 is pivotally supported by a support plate member 27 provided in the washing machine main body 1. The piston rod 25 is pivotally supported by a support bracket 29 that supports the outer tub 13, and has a damper structure for damping vibration. That is, the piston 23 restricts the amount of movement of the piston 23 at the time of vibration due to the sliding frictional force with respect to the cylinder 26 and the viscous damping due to the ingress and egress of air, whereby a vertical damping force is obtained. I have.
[0020]
On the other hand, the upper part of the main body support part 3 is the support plate member 27 which pivotally supports the cylinder 26 of the suspension 11, as shown in FIG. Further, a support leg 31 for installation on the floor surface 5 is provided below the main body support portion 3, and has a structure provided with an anti-vibration function. Specifically, a dynamic vibration absorber 35 having an anti-vibration function is provided in the main body support portion 3.
[0021]
The dynamic vibration absorber 35 includes structural members supported by the suspension 11, for example, a mass body 37 corresponding to about 15% of the mass of the drive motor 15, the inner tank 19, the outer tank 13, and the support bracket 29, and a damper 39. It is composed of
[0022]
The damper 39 is configured such that the cylinder portion 41 rises from the central portion of the mass body 37, the amount of movement of the piston 45 is controlled by the spring pressure of the spring 43 with respect to the cylinder portion 41, and the piston extended upward from the piston 45. It has a rod 47 and generates a damping force when the piston rod 47 whose movement is restricted is moved. The spring constant and the damping coefficient of the spring 43 are set so as to limit the vertical vibration generated during the dehydrating operation of the inner tub 19.
[0023]
In the drum-type washing machine 3 configured as described above, the structure components (the drive motor 15, the inner and outer tubs 19, 13) supported by the suspensions 11, 11 will be described with reference to the schematic diagram of the vibration system shown in FIG. ) Is represented by M, and the mass of the mass body 37 supported by the damper 39 is represented by m. During the dehydration process, the unbalanced centrifugal force of the laundry to be generated in the inner tub 19 acts on the mass M as an external force F.
[0024]
At the start of dehydration, the vibration of the mass M increases at the resonance point, but the resonance vibration is reduced by the frictional force in the suspension 11. At the same time, since the mass m acts as the dynamic vibration absorber 35 attached to the mass M via the spring damping by the spring 43, the mass M at the resonance point, that is, the vertical vibration of the inner tank 19 is reduced. You.
[0025]
In this case, as shown in FIG. 4, the piston rod 47 extended from the cylinder portion 41 is pivotally supported by a mounting shaft 51 so as to be rotatable in a direction indicated by an arrow with respect to a mounting portion 49 of the support bracket 29. The length L from 51 to the position of the center of gravity of the mass body 37 is configured to act as the dynamic vibration absorber 35 for damping the vibration of the inner tank 19 in the left-right direction. Can be reduced.
[0026]
In the embodiment, since the resonance vibration at the time of starting dehydration can be attenuated by the dynamic vibration absorber 35, for example, by reducing or eliminating the frictional force acting on the suspension 11, The vibration transmission force transmitted to the support plate member 27 via the suspension 11 can be reduced, and the vibration transmission force to the floor 5 and the washing machine main body 1 can be suppressed to a small value during steady dehydration.
[0027]
On the other hand, the insertion port 17 is set at a higher position by the main body support portion 3, so that the loading and unloading of laundry can be easily performed.
[0028]
FIG. 5 shows another embodiment of the main body support 3.
[0029]
That is, the main body support portion 3 is formed independently of the main body 1 of the washing machine. The washing machine main body 1 is provided with a supporting leg 53 made of rubber so as to be directly installed on the floor surface 5, and is installed on an upper surface of a support base 55 of the main body support 1. As a result, the position D of the inlet 17 from the floor 5 is higher by H of the main body support 3.
[0030]
The central portion of the bottom plate 1a of the main body 1 of the washing machine has an opening 57 which is largely opened.
[0031]
The main body support 3 is formed in a box shape, and a support plate 59 for installation on the floor 5 is provided on the bottom plate. While the dynamic vibration absorber 35 is disposed in the main body support portion 3, an opening 61 corresponding to the opening 57 provided in the bottom plate of the washing machine main body 1 is provided in a central portion of the support base 55.
[0032]
The dynamic vibration absorber 35 includes structural members supported by the suspension 11, for example, a mass body 37 corresponding to about 15% of the mass of the drive motor 15, the inner tank 19, the outer tank 13, and the support bracket 29, and a damper 39. It is configured.
[0033]
The damper 39 is configured such that the cylinder portion 41 rises from the central portion of the mass body 37, the amount of movement of the piston 45 is controlled by the spring pressure of the spring 43 with respect to the cylinder portion 41, and the piston extended upward from the piston 45. It has a rod 47, and the piston rod 47 is rotatably attached to the mounting portion 49 of the support bracket 29 through the respective opening ports 61 and 57 by a mounting shaft 51 in a direction indicated by an arrow. Accordingly, a damping force is generated when the piston rod 47 whose movement is restricted moves, and the spring constant and the damping coefficient of the spring 43 dampen the vertical vibration generated during the dehydrating operation of the inner tub 19. Is set to
[0034]
Further, the mounting shaft 51 of the piston rod 47 is arranged on the vertical line X of the center of gravity of the main body vibration system, and can be removed as necessary.
[0035]
The other components are the same as those in FIG. 1 and are denoted by the same reference numerals, and detailed description is omitted.
[0036]
According to such a drum type washing machine, in addition to the effects of the above-described embodiment, there is obtained an advantage that the use of the main body support portion 3 can be selected depending on the place of use or use conditions.
[0037]
FIG. 6 shows another embodiment of the dynamic vibration absorber 35.
[0038]
The dynamic vibration absorber 35 is constituted by a structural body supported by the suspension 11, for example, a mass body 61 corresponding to about 15% of the mass of the drive motor 15, the inner tub 19, the outer tub 13, and the support bracket 29. It is arranged in the main body support portion 3 that raises the position D of the inlet 17 from the surface 5 by H.
[0039]
The upper end of the support rod 63 rising from the center portion of the mass body 61 is pivotally supported by a mounting portion 65 provided on the support bracket 29 so as to be able to freely swing in the direction of the arrow around the mounting shaft 67.
[0040]
The position of the center of gravity of the mass body 61 and the length L to the mounting shaft 67 are set so as to act as the dynamic vibration absorber 35 for damping the left-right vibration of the inner tank 19.
[0041]
The other components are the same as those in FIG. 1 and are denoted by the same reference numerals, and detailed description is omitted.
[0042]
According to the embodiment configured as described above, in the vibration system generated at the time of starting dehydration, the resonance vibration in the vertical direction is reduced by the suspension 11. Further, the vibration in the left-right direction is reduced by the pendulum motion of the mass body 61 about the mounting shaft 67, and the transmission of the vibration to the main body 1 of the washing machine is suppressed.
[0043]
In addition, since the position of the insertion port 17 is increased by H by the main body support portion 3, it is easy to take in and out the laundry.
[0044]
FIG. 7 shows another embodiment of the main body supporting portion 3 in which the position of the insertion port 17 is raised.
[0045]
That is, the main body supporting portion 3 is formed independently of the washing machine main body 1 in which the inner tub 19, the outer tub 13, and the suspensions 11 and the like for supporting the inner tub 19 are housed . A supporting leg 69 made of rubber is provided at the bottom of the washing machine main body 1 , and the washing machine main body 1 is installed on the support base 71 of the main body supporting portion 3 via the supporting leg 69.
[0046]
It can be seen that the rubber leg 69 affects the vibration transmitting force to the floor depending on the rubber hardness as shown in FIG. That is, the lower the rubber hardness is, the lower the resonance point at which the transmission force is maximized. In particular, when compared near the dehydration rotation of 1000 rpm, the rubber hardness is small as shown by the solid line, that is, the softer the rubber, the smaller the vibration transmitting force to the floor.
[0047]
On the other hand, since it is soft, it is easy to move in the left-right direction, and vibration in the left-right direction increases. In addition, the support leg 69 is made of a hard material because it causes a problem that the support leg itself is easily set.
[0048]
On the other hand, the support base 71 of the main body support portion 3 has a structure supported by a spring 73 and a support mechanism 79 including a piston 75 and a piston rod 77 so as to be vertically movable.
[0049]
The spring 73 has a structure in which the spring hardness is apparently made softer by using a combination of springs having a smaller spring constant.
[0050]
The other components are the same as those in FIG. 1 and are denoted by the same reference numerals, and detailed description is omitted.
[0051]
According to the embodiment thus formed, when the laundry in the inner tub 19 is deviated during dehydration, an unbalanced centrifugal force acts on the inner tub 19 to vibrate.
[0052]
At this time, the vibration in the vertical direction to the floor 5 is suppressed to be small by the spring 73. At the same time, the support leg 69 does not increase the vibration in the left-right direction due to the hard rubber hardness.
[0053]
In addition, since the position D of the insertion port 17 is increased by H by the main body support portion 3, it is easy to put laundry in and out.
[0054]
In this embodiment, the main body supporting portion 3 is configured as a separate body. However, as shown in FIG. 9, the same structure may be adopted as the washing machine main body 1 in which the main body supporting portion 3 is integrally formed. The effect is obtained.
[0055]
【The invention's effect】
As described above, according to the drum type washing machine of the present invention, the following effects can be obtained.
[0056]
(1) The position of the slot can be raised by the main body supporting portion, so that the laundry can be easily taken in and out, and the usability is excellent.
[0057]
(2) Resonance vibration at the time of dehydration start and vibration transmission force to the floor surface at the time of dehydration steady state can be reduced.
[0058]
(3) The user can select the main body support part according to the place of use and the conditions of use.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view of a drum type washing machine according to the present invention.
FIG. 2 is a schematic perspective view of a drum type washing machine.
FIG. 3 is a schematic model diagram of a vibration system.
FIG. 4 is a schematic explanatory view similar to FIG. 1 in which a dynamic vibration absorber is supported so as to freely move with a pendulum.
FIG. 5 is a schematic explanatory view similar to FIG. 4, showing another embodiment of the main body support.
FIG. 6 is a schematic explanatory view similar to FIG. 1 in which a mass body is supported for pendulum movement.
FIG. 7 is a schematic explanatory view of a drum type washing machine showing another embodiment of a main body supporting portion.
FIG. 8 is an explanatory diagram of transmission force due to rubber hardness.
FIG. 9 is a schematic explanatory view similar to FIG. 7, in which the main body support is formed integrally with the main body of the washing machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Washing machine main body 3 Main body support part 5 Floor surface 7 Opening / closing door 11 Suspension 13 Outer tub 15 Drive motor 17 Input port 19 Inner tub

Claims (3)

Inside a washing machine body, an inner tub having an outer tub supported by a suspension, and an input port through which a garment can be taken in and out through an openable and closable door that is rotatably controlled about a horizontal axis by a drive motor inside the outer tub. And a lower part of the washing machine main body, a position of the input port being higher than a suspension supporting the outer tub, and a main body supporting portion having a vibration isolating function. A drum-type washing machine characterized by comprising: Inside the washing machine body, an outer tub supported by a suspension, and an inner tub having an input port through which a garment can be taken in and out through an openable / closable door that is rotatably controlled about a horizontal axis by a drive motor inside the outer tub. In the drum type washing machine having the above, the washing machine main body is disposed below a suspension supporting the outer tub, and a support leg made of rubber is provided on a support base of a main body supporting portion which raises a position of the input port. A drum-type washing machine which is installed through a portion and supports a support base of a main body support portion vertically vertically movably via a spring element. Washing machine body and drum-type washing machine according to claim 1, characterized in that an integral shaped body supporting portion.

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