JP2007020992A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine which can damp the vibration as caused by the rotation of a spin drum leaving washing and washing water unbalanced within the spin drum. <P>SOLUTION: The drum type washing machine is provided with a body 1, a water tub 4 included in the body 1, the spin drum 6 which is included in the water tub 4 and has a rotary shaft 6a in a slant way and a first damper 3 provided almost vertically between the body 1 and the water tub 4. The second damper 11 is disposed in a direction different from that of the first damper 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine that sequentially controls each process such as washing, rinsing, and dewatering in a rotating drum having a rotation center axis in an oblique direction.

  Conventionally, this type of drum type washing machine has a configuration as shown in FIGS. Hereinafter, the configuration will be described.

  FIG. 9 is a cross-sectional view in the front-rear direction of a conventional drum-type washing machine, and FIG. 10 is a cross-sectional view in the left-right direction of the conventional drum-type washing machine. The main body 1 having an opening for putting laundry in and out of the front surface, the suspension 2, the first damper 3 for damping the vibration of the water tank, and the opening of the main body supported by the suspension 2 and the first damper 3 A water tank 4 having an opening at a position corresponding to the above, a door 5 for opening and closing the front opening of the water tank 4, a rotating drum 6 rotatably disposed in the water tank 4, and a washing motor for driving the rotating drum 6 7, a washing water supply valve 8 for supplying washing water, a drain cock 9 for draining the washing water, and a substantially annular packing member 10 that connects between the opening of the water tank 4 and the front opening of the main body 1. (For example, refer to Patent Document 1).

The washing / dehydrating process in such a drum type washing machine will be described. When the door 5 is opened and the laundry is put into the rotating drum 6, the washing water supply valve 8 is opened and water is supplied into the water tank 4 to a predetermined water level to start the washing process. Next, the washing motor 7 is driven to rotate the rotating drum 6. The laundry is lifted by the rotation of the rotating drum 6 and repeatedly dropped, and is washed by the impact force and the detergent when dropped on the water surface. When the washing process is finished, the drain cock 9 is opened and the washing water is drained. When drainage is completed, the washing motor 7 is driven to rotate the rotating drum 6 at a high speed of about 900 r / min for dehydration.
JP 2005-137463 A

  However, in the conventional configuration described above, if the laundry or washing water is rotated at a high speed in a state where the laundry or washing water is biased downward of the rotating drum 6, a large vibration is generated in the water tank 4. In particular, the rotating drum shown in FIG. In the drum type washing machine in which the rotation axis 6 is oblique, the laundry and the washing water tend to be biased downward, so that the vibration of the water tub 4 and the rotation drum 6 is likely to increase during the dehydration process.

  Compared with the case where the rotation axis is horizontal, not only the vibration in the vertical direction but also the vibration in the front-rear direction and the horizontal direction are likely to occur with respect to the main body. Otherwise, noise was generated and the drum-type washing machine itself was moved by vibration.

  Further, the first damper 3 can only attenuate the vibration in the substantially vertical direction which is the vertical direction with respect to the main body 1, and cannot attenuate the vibration in the front-rear direction and the left-right direction with respect to the main body 1. .

  Furthermore, two first dampers 3 are arranged in the left-right direction with respect to the main body 1 as shown in FIG. 10, but are disposed at the same position in the front-rear direction as shown in FIG. In the water tank 4, a swinging motion in which the front part having the opening and the rear part in which the washing motor 7 is arranged moves in the upside down direction is generated, and the vibration is transmitted to the main body.

  The present invention solves the above-described conventional problems, and attenuates vibrations caused by rotating the rotating drum in a state where the laundry and washing water in the rotating drum are biased, thereby reducing low vibration and low noise. An object is to provide a drum-type washing machine.

  In order to solve the conventional problems, a drum-type washing machine according to the present invention includes a main body, a water tank swingably included in the main body, and a rotary shaft included in the water tank so as to be rotatable. And a first damper provided in a substantially vertical direction between the main body and the water tank, and between the main body and the water tank, the first damper and Are provided with second dampers in different directions.

  With this configuration, it is possible to attenuate the vibration of the rotating drum and the water tank generated in the dehydration process in a direction other than the vertical direction by the second damper.

  The drum type washing machine of the present invention can attenuate the vibration generated by rotating the rotating drum in a state where the laundry and washing water in the rotating drum are biased, so that low vibration and low noise can be realized. Can do.

  The first invention includes a main body, a water tank that is swingably included in the main body, a rotary drum that is rotatably included in the water tank and has a rotation shaft inclined from the front side to the rear side, A first damper provided in a substantially vertical direction between the main body and the water tank, and a second damper disposed between the main body and the water tank in a direction different from the first damper. A drum-type washing machine.

  With this configuration, the vibration of the rotating drum and the water tank generated in the dehydration process and in a direction other than the vertical direction can be damped by the second damper, so that low vibration and low noise can be realized.

  The second invention is characterized in that, in the first invention, the second damper is disposed in a direction substantially parallel to the rotation axis.

  With this configuration, the vibration of the rotating drum and the water tank in the dehydration process and in the direction parallel to the rotation axis can be attenuated by the second damper, so that low vibration and low noise can be realized. .

  A third invention is characterized in that, in the first invention, the second damper is arranged in a direction substantially perpendicular to the rotation axis.

  With this configuration, the vibration of the rotating drum and the water tank in the dehydration process and the vibration perpendicular to the rotation axis can be attenuated by the second damper, so that low vibration and low noise can be realized. .

  A fourth invention is characterized in that, in the first invention, the second dampers are respectively arranged in a substantially parallel direction and a substantially vertical direction with respect to the rotation axis.

  With this configuration, vibrations of the rotating drum and the water tank, which are vibrations in the direction parallel to and perpendicular to the rotation axis, can be attenuated in the dehydration process, so that low vibration and low noise can be realized.

  In a fifth aspect based on the first aspect to the fourth aspect, the second damper has substantially square first and second plates that are parallel to each other at both ends, and the first plate. And an approximately U-shaped mounting bracket formed by a substantially rectangular third plate positioned perpendicular to the second plate, and both ends of the second damper are connected to the first plate and the second plate. The second plate and the first elastic member are fixed to the main body via the mounting bracket.

  With this configuration, when vibration in the left-right direction occurs with respect to the main body, the first elastic member can absorb the vibration and attenuate the vibration of the main body, so that low vibration and low noise can be realized. .

  In a sixth aspect based on the fifth aspect, both ends of the second damper are integrally formed with a substantially cylindrical mounting ring having a first through-hole, and the first through-hole is defined as the second through-hole. A substantially cylindrical second elastic member having a through-hole, and the second through-hole includes a substantially cylindrical mounting portion having a third through-hole, and includes a first plate and a second plate. The plate and the first elastic member respectively have a fourth through hole, a fifth through hole, and a sixth through hole communicating with the third through hole, and the second damper and the first elastic member The mounting bracket is fixed so that the third through hole, the fourth through hole, the fifth through hole, and the sixth through hole communicate with each other.

  With this configuration, when vibration in the left-right direction occurs with respect to the main body, the first elastic member and the second elastic member can absorb the vibration in the left-right direction and attenuate the vibration of the main body. Therefore, low vibration and low noise can be realized.

  A seventh invention is characterized in that, in the first to sixth inventions, the first damper or the second damper is an oil damper.

  Due to this configuration, the damper force generated to move the damper slowly is weak when installing the damper, so it is easy to install, and during the dehydration process, a large damper force is generated against the vibration of the water tank, so that vibration can be suppressed, low vibration, low noise Can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a front-rear direction cross-sectional view of a drum-type washing machine according to a first embodiment of the present invention.

  In FIG. 1, an opening for taking in and out the laundry is provided on the front side of the main body 1, and a door 5 that covers the opening so as to be freely opened and closed is provided.

  The first damper 3 is an oil damper, and as shown in FIG. 2, a cylinder 13, a piston rod 14 that is elastically attached to the lower end of the cylinder 13, and an outer peripheral portion of the piston rod 14 that supports the water tank 4. And a support shaft 17 fixed to the upper end of the cylinder 13. The piston rod 14 is fixed to a support base 18 fixed to the base portion of the main body 1 via a cushioning material 16. The support shaft 17 is fixed to a lower support bracket 19 fixed below the water tank 4 via a cushioning material 16.

  The water tub 4 has an opening for putting laundry in and out at a position corresponding to the opening of the main body 1, and includes a rotating drum 6. Since the washing tub 7 for rotating the rotating drum 6 is disposed on the rear side of the water tank 4, the center of gravity is biased toward the rear side and is in an unstable state, but the first damper 3 The coil spring 15 has a support from below, and the suspension 2 is suspended from the main body 1 so as to be swingable.

  The rotating drum 6 has an opening for taking in and out the laundry at a position corresponding to the opening of the water tub 4, and has a large number of water passage holes on the outer periphery. Further, the rotary shaft 6a, which is a rotational motion axis, is rotatably disposed in the water tank 4 in a state where the rotary shaft 6a is inclined downward from the front side to the rear side of the main body 1.

  A washing motor 7 attached to the rear side of the water tub 4 is connected to the rotating shaft 6a. The washing motor 7 drives the rotating drum 6 to rotate in the forward or reverse direction.

  Next, the structure of the 2nd damper 11 and the 2nd damper 12, and the attachment method are demonstrated.

  FIG. 3 is a front view of the second damper 11, and FIG. 4 is a side view of the second damper 11. The second damper 11 is the same oil damper as the first damper 3 and has the same cylinder 13 and piston rod 14 as the first damper 3. Further, the attachment ring 20 is integrally formed at both ends of the second damper 11.

  As shown in FIG. 4, the mounting ring 20 has a cylindrical shape having a bottom surface 20a, an upper surface 20b and a through hole 20c, and has a cylindrical shape having a through hole 21a along the inner wall of the through hole 20c. And a cylindrical attachment portion 22 having a through hole 22a is provided along the inner wall of the through hole 21a. Moreover, the height of the attachment part 22 is made higher than the heights of the attachment ring 20 and the elastic member 21, and the attachment part 22 penetrates and protrudes from the through hole 20a and the through hole 21a.

  A substantially annular elastic member 23 having a through hole 23a is provided on the bottom surface 20a and the upper surface 20b of the attachment ring 20 from the outside so that the attachment portion 22 protruding from the elastic member 21 is included in the through hole 23a. Yes. The inner diameter of the elastic member 23 is substantially the same as the outer diameter of the attachment portion 22, and the outer diameter is substantially the same as the outer diameter of the attachment ring 20.

  FIG. 5A is a perspective view of a mounting bracket 24 for fixing the second damper 11 to the main body 1, FIG. 5B is a configuration diagram showing a state in which the mounting bracket 24 is mounted on the mounting ring 20, and FIG. FIG. 3 is a cross-sectional view of a state in which a mounting bracket 24 is attached to the mounting ring 20. As shown in FIG. 5 (a), the mounting bracket 24 includes a substantially square plate 24a, a plate 24b that is substantially the same square as the plate 24a and arranged parallel to the plate 24a, and is perpendicular to both the plate 24a and the plate 24b. A substantially rectangular plate 24c provided integrally therewith at various positions is formed in a substantially U-shape. The plate 24a and the plate 24b are provided with a hole 24d and a hole 24e through which a bolt 25a for attaching the second damper 11 is passed. The plate 24c is provided with the mounting bracket 24 for the main body 1, the lower support bracket 19 and the support 24. A hole 24f through which a bolt 27 for fixing to the base 18 is passed is provided.

  The plate 24a, the plate 24b, and the elastic member 23 are in parallel contact between the plates 24a and 24b of the mounting bracket 24, and the holes 24d and the through holes 22a and the holes 24e of the mounting portion 22 are communicated in this order. The mounting ring 20 of the second damper 11 is inserted. Next, the bolt 25a is inserted into the hole 24d from the outside of the plate 24a, and subsequently inserted into the through hole 22a and the hole 24e of the mounting portion 22, and fixed with the nut 25b from the outside of the plate 24b.

  In this way, the mounting bracket 24 fixed to both ends of the second damper 11 is attached to the one end so that the second damper 11 is substantially parallel to the rotating shaft 6a of the rotary drum 6. The bolt 27 is inserted into the hole 24f of the mounting bracket 24 and the hole (not shown) provided in the lower support bracket 19 on the back side of the lower support bracket 19 that fixes the first damper 3 as shown in FIG. Secure with nut 28.

  Next, the mounting bracket 24 attached to the other end is fixed as shown in FIG. FIG. 6 is a cross-sectional view in the left-right direction of the drum type washing machine in the present embodiment. As shown in FIGS. 1 and 6, a reinforcing plate 26 is fixed from the rear to a main body flange portion 1a extending from both side surfaces of the main body 1 and bent inward at a substantially right angle by bolts 26a and nuts 26b. A bolt 27 is inserted into a hole (not shown) provided in the hole and a hole 24 f of the mounting bracket 24 and fixed with a nut 28.

  Next, the second damper 12 will be described. The second damper 12 is an oil damper having a configuration similar to that of the second damper 11. FIG. 7 is a cross-sectional view in the left-right direction of the drum type washing machine in the present embodiment. As shown in FIGS. 1 and 7, the mounting bracket 24 attached to one end of the second damper 12 is attached to the first damper 3 so that the second damper 12 is substantially perpendicular to the rotation shaft 6 a of the rotary drum 6. Is fixed to the back side of the lower support bracket 19 and the mounting bracket 24 attached to the other end is fixed to the upper surface of the support base 18 to which the first damper 3 is fixed. Since the fixing method is the same as that of the second damper 11, the description thereof is omitted.

  About the drum type washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated. When the laundry is put into the rotating drum 6 and the washing process is started, the washing water supply valve 8 is opened to supply water into the water tank 4 to a predetermined water level. Next, when the washing motor 7 is driven to rotate the rotating drum, the laundry is lifted and repeatedly dropped, and is washed by the detergent water and the impact force when dropped on the water surface. When the washing process ends, the drain cock 9 is driven to drain the washing water. When drainage is completed, the washing motor 7 rotates the rotating drum 6 at a high speed of about 900 rpm to perform dehydration.

  In this dehydration process, when the washing water and the laundry are in an unbalanced state, the water tank 4 and the rotating drum 6 vibrate greatly by the rotation of the rotating drum 6.

  Of the vibrations in the water tank 4, vibrations in the vertical direction with respect to the main body 1 are attenuated by the first damper 3, and vibrations parallel to the rotating shaft 6 a are attenuated by the second damper 11 and perpendicular to the rotating shaft 6 a. The second damper 12 attenuates such vibrations.

  Thereby, the vibration of the water tank 4 and the rotating drum 6 can be attenuated, and the vibration transmitted to the main body 1 can also be reduced.

  In addition, as shown in FIG. 1, the first damper 3, the second damper 11, and the second damper 12 are provided so as to be shifted in the front-rear direction with respect to the main body 1, so that the water tank 4 and the rotating drum 6 are swung. Exercise can be reduced.

  Further, since the second damper 11 is supported in a rotatable state with respect to the mounting bracket 24, excessive stress is not generated in the second damper 11, and the durability performance can be improved.

  Further, in the present embodiment, the damper is not provided in such a direction as to attenuate the vibration in the left-right direction with respect to the main body 1, but the cylindrical elastic member 21 provided in the second damper 11 and the second damper 12. The vibration in the left-right direction can be reduced by the substantially annular elastic member 23.

  FIG. 8 is a cross-sectional view of the second damper 11 according to the first embodiment of the present invention. When the water tank 4 and the rotating drum 6 vibrate in the direction indicated by the arrow A in FIG. 8, the elastic member 21 and the elastic member 23 absorb the vibration by deformation as shown in FIG. I don't get it.

  Further, in the present embodiment, oil dampers are used as the first damper 3, the second damper 11, and the second damper 12. However, since the oil damper is speed-dependent, work is required when installing the damper. Since the person extends or contracts the piston rod 14 of the damper, the expansion / contraction speed of the piston rod 14 is slow, and the generated damper force is small, so that the work is easy. On the contrary, during the dehydration stroke, the expansion and contraction speed of the piston rod 14 is increased, so that a large damper force is generated and the vibration can be attenuated.

  In the present embodiment, both the second damper 11 and the second damper 12 are provided. However, even if only one of them is provided, vibration in a direction corresponding to the direction of the provided damper is provided. On the other hand, the same effect as this embodiment can be obtained.

  Moreover, although the 2nd damper 11 and the 2nd damper 12 were each provided one each, the vibration of the water tank 4 and the rotating drum 6 can further be damped by providing multiple each.

  In addition, the second damper 11 and the second damper 12 are disposed on the lower support bracket 19 in which the first damper 3 is disposed. However, different support brackets are newly provided in the water tank 4, and Each may be arranged. By providing different support fittings, the dampers can be provided farther away from each other in the front-rear direction, thereby reducing the swinging motion of the water tank 4.

  Moreover, although the 2nd damper 11 and the 2nd damper 12 were arrange | positioned so that it might become a parallel direction and a perpendicular direction with respect to the rotating shaft 6a, respectively, the inclination to arrange | position is not restricted to a parallel direction and a perpendicular direction. It is desirable to dispose each damper in a different direction. By disposing the dampers in different directions, vibrations in various directions can be damped in the entire disposed damper.

  For example, the second damper 11 is arranged to be perpendicular to the first damper 3, and the second damper 12 is arranged to be perpendicular to both the first damper 3 and the second damper 11. By doing so, vibrations in all directions in the vertical direction, the horizontal direction, and the front-rear direction can be attenuated with respect to the main body 1.

  Furthermore, in the present embodiment, oil dampers are used as the first damper 3, the second damper 11, and the second damper 12. However, any damper may be used as long as it attenuates vibration. For example, a friction damper may be used.

  As described above, the drum-type washing machine according to the present invention can attenuate the vibration generated by rotating the rotating drum in a state where the laundry and washing water in the rotating drum are biased. It is useful as a washing machine that performs washing, rinsing, and dewatering in a rotating drum having a rotating shaft in an inclined direction.

Cross-sectional view in the front-rear direction of the drum type washing machine in the first embodiment of the present invention. Configuration diagram of the first damper 3 Configuration diagram of the second damper 11 Configuration diagram of the second damper 11 (A) Perspective view of mounting bracket 24 (b) Front view of second damper 11 and mounting bracket 24 (c) Cross-sectional view of second damper 11 and mounting bracket 24 Configuration diagram for explaining the mounting position of the second damper 11 Configuration diagram for explaining the mounting position of the second damper 12 The block diagram explaining damping | damping of the vibration of the left-right direction of the said 2nd damper 11 Cross-sectional view in the front-rear direction of a conventional drum-type washing machine Cross-sectional view in the left-right direction

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 3 1st damper 4 Water tank 6 Rotating drum 6a Rotating shaft 11 2nd damper 12 2nd damper

Claims (7)

A main body, a water tank included in the main body so as to be swingable, a rotary drum that is rotatably included in the water tank and has a rotation shaft inclined from the front side to the rear side, and between the main body and the water tank The first damper is provided in a substantially vertical direction, and a second damper is disposed between the main body and the water tank in a direction different from the first damper. Drum type washing machine. The drum type washing machine according to claim 1, wherein the second damper is disposed in a direction substantially parallel to the rotation axis. The drum type washing machine according to claim 1, wherein the second damper is disposed in a direction substantially perpendicular to the rotation axis. 2. The drum type washing machine according to claim 1, wherein the second dampers are respectively arranged in a substantially parallel direction and a substantially vertical direction with respect to the rotation axis. The second damper includes, at both ends, a substantially square first and second plates that are parallel to each other, and a substantially rectangular third plate that is perpendicular to the first and second plates. A substantially U-shaped mounting bracket formed; both ends of the second damper are fixed to the first plate and the second plate via a first elastic member; and The drum type washing machine according to any one of claims 1 to 4, wherein the drum type washing machine is fixed to the main body through a mounting bracket. Both ends of the second damper are integrally formed with a substantially cylindrical mounting ring having a first through hole, and the first through hole is a substantially cylindrical second elastic member having a second through hole. The second through-hole includes a substantially cylindrical mounting portion having a third through-hole, and the first plate, the second plate, and the first elastic member include the first through-hole. Each of the fourth through hole, the fifth through hole, and the sixth through hole communicated with the third through hole. The second damper and the mounting bracket include the third through hole, the fourth through hole, and the fourth through hole, respectively. 6. The drum type washing machine according to claim 5, wherein the through hole, the fifth through hole, and the sixth through hole are fixed so as to communicate with each other. The drum type washing machine according to any one of claims 1 to 6, wherein the first damper and the second damper are oil dampers.