JP2019055038A - Drum type washing machine - Google Patents

Abstract

To prevent from feeling hesitant to the neighborhood even if washing is performed in the middle of the night by reducing vibration of a body.SOLUTION: A drum type washing machine includes: an outer case 1; a water tank 15 which is provided in the outer case 1 so as to receive water; a drum 16 which is rotatably provided in the water tank 15 and stores laundry; a motor 17 which rotationally drives the drum 16; and a vibration isolating apparatus 11 which elastically supports the water tank 15. The drum type washing machine further includes: two or more reinforcing plates 23 and 24 which are provided like a bridge on right and left side plates 2 and 3 of the outer case 1; a connection member 25 which is provided so as to connect the two or more reinforcing plates 23 and 24; and a dynamic vibration absorber 22 which is disposed on the reinforcing plates 23 and 24 or the connection member 25.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to a drum-type washing machine.

  There are many cases where drum-type washing machines are installed indoors. Especially when installing indoors in condominiums, etc., the noise and vibration generated during the dehydration operation of drum-type washing machines can be reduced as much as possible from the consideration of the neighborhood. Measures to make it smaller are required.

  Known low-noise and low-vibration technologies for conventional drum-type washing machines include liquid balancers that correct cloth unbalance force, vibration-proof devices such as suspensions, and elastic support members such as rubber. A countermeasure device is installed in the drum type washing machine. However, the above countermeasure device is not very effective for vibration of the casing of the drum type washing machine. Since the vibration of the housing is strongly influenced by the place where the drum type washing machine is installed, that is, the strength of the floor, a new countermeasure against vibration is required.

JP 2012-179079 A

  Therefore, a drum-type washing machine that can reduce the vibration of the housing and does not bother the neighborhood even if washing is performed at midnight is provided.

  The drum-type washing machine of the present embodiment includes an outer box, a water tank provided in the outer box for receiving water, a drum rotatably provided in the water tank for storing laundry, and the drum being driven to rotate. And a vibration isolator for elastically supporting the water tank, wherein two or more reinforcing plates provided in a bridge shape on the left and right side plates of the outer box, and the two or more reinforcing members A connecting member provided to connect the plates and a dynamic vibration absorber disposed on the reinforcing plate or the connecting member.

Longitudinal side view of the washing machine according to the first embodiment Top view of the outer box with the top plate removed Perspective view of dynamic vibration absorber Perspective view of laminate (Part 1) Perspective view of laminate (part 2) Front view of elastic member Cross section of elastic member Top view of fourth substrate Sectional drawing which follows the IX-IX line in FIG. 8 of the 4th board | substrate which removed the screw Sectional drawing which follows the XX line in FIG. 8 of the 4th board | substrate which removed the screw Front view of screw

  Hereinafter, a drum type washing machine according to a plurality of embodiments will be described with reference to the drawings. In each embodiment, substantially the same components are denoted by the same reference numerals, and description thereof is omitted. In the following embodiments, the side where the door of the drum type washing machine is located, that is, the right side of the paper surface of FIG. 1 is the “front side” of the drum type washing machine, and the front side of the paper surface of FIG. The “left side” of the machine will be described as the installation surface side where the outer box of the drum type washing machine is installed, that is, the lower side with respect to the paper surface of FIG.

(First embodiment)
The drum type washing machine according to the first embodiment will be described with reference to FIGS. The drum type washing machine shown in FIG. 1 includes an outer box 1 that constitutes an outer shell. The outer box 1 has a box shape, and the longitudinal side surface of the outer box 1 has a rectangular shape. The outer box 1 is formed of, for example, a steel plate, and includes left and right side plates 2 and 3 (see FIG. 2), a front plate 4, a back plate 5, a top plate 6, and a bottom plate 7.

  A laundry entrance 8 is formed in the center of the front plate 4 of the outer box 1. A door 9 for opening and closing the laundry entrance 8 is provided in the vicinity of the laundry entrance 8 on the front plate 4 of the outer box 1. A back cover is detachably provided on the back plate 5 of the outer box 1. An operation panel (not shown) is provided at the front portion of the top plate 6 of the outer box 1. The operation panel is provided with various switches for selecting, for example, various driving courses and starting driving. A control device (not shown) is provided in the outer box 1 on the back side of the operation panel. The control device functions as a control means for controlling the overall operation of the drum type washing machine, and includes a microcomputer.

  A water tank 15 is provided in the outer box 1. The water tank 15 receives water for washing laundry, has a bottomed cylindrical shape with a closed rear end, and has one end, in this case, the front end. The water tank 15 is elastically supported by a pair of left and right suspensions 14 so as to be inclined upward. Therefore, the central axis of the water tank 15 also rises forward. In addition, you may comprise the water tank 15 so that it may elastically support horizontally. In FIG. 1, only the right suspension 7 is shown.

  A washing motor 17 is provided outside the rear end of the water tank 15 to drive a drum 16 described later. The washing motor 17 is composed of, for example, a direct current brushless motor and has an outer rotor type. A rotating shaft portion (not shown) of the washing motor 17 is attached to the center portion of the rotor 17 a, passes through the bearing housing 18, passes through the center portion of the rear end plate of the water tank 15, and projects into the water tank 15. Thereby, the central axis of the rotating shaft part of the washing motor 17 coincides with the central axis of the water tank 15.

  A drum 16 is rotatably provided in the water tank 15. The drum 16 has a bottomed cylindrical shape that is large enough to accommodate laundry therein, and has one end, in this case, the front end. Specifically, the drum 16 includes a drum peripheral plate 16a and a drum rear plate 16b. The drum peripheral plate 16a has a cylindrical shape in which each of the front surface and the rear surface is open. The drum rear plate 16b has a circular shape that closes the rear end of the drum peripheral plate 16a. Thus, the opening 16c is formed at the front end of the drum 16.

  The central portion of the drum rear plate 16 b is attached to the tip of the rotating shaft portion of the washing motor 17. As a result, the central axis of rotation of the drum 16 coincides with the central axis of the water tank 15 and the central axis of the rotating shaft portion of the washing motor 17, and the drum 16 is supported in a forwardly inclined manner. Further, the driving force of the washing motor 17 is transmitted to the drum 16 via the rotating shaft portion, and the drum 16 is driven to rotate.

  A large number of small holes 19 are formed in the entire area of the drum peripheral plate 16 a that is the side surface on the circumferential side of the drum 16. A liquid balancer 20 is provided in the vicinity of the opening 16c that is the front end of the drum peripheral plate 16a of the drum 16.

  An annular bellows 21 made of rubber is provided between the laundry entrance 8 and the opening of the water tank 15. Thus, the opening 16 c of the drum 16 is connected to the opening of the water tank 15 via the bellows 21. The laundry doorway 8 is connected to the inside of the drum 16 through the bellows 21, the opening of the water tank 15 and the opening 16 c of the drum 16.

  A drain pipe 23 is connected to the lower part of the rear end, which is the lowest part of the water tank 15, via a drain valve 22. Further, the water tank 15 is provided with a drying device (not shown) for circulating and supplying dehumidified and heated air into the drum 16 to dry the laundry in the drum 16.

  In the present embodiment, a dynamic vibration absorber 22 is disposed above the rear part in the outer box 1, that is, above the rear part of the water tank 15. In this configuration, as shown in FIG. 2, two reinforcing plates 23 and 24 are provided in a bridge shape on the front and rear portions of the upper and lower side plates 2 and 3 of the outer box 1. Under the central portions of the reinforcing plates 23 and 24, a connecting member 25 is provided in a bridge shape so as to connect the two reinforcing plates 23 and 24 together.

  Further, as shown in FIGS. 1 and 2, the dynamic vibration absorber 22 is placed on the central portion of the rear reinforcing plate 24 and fixed by, for example, screwing or the like. The dynamic vibration absorber 22 may be placed and fixed on the connecting member 25, or the dynamic vibration absorber 22 may be fixed and placed on the front reinforcing plate 23.

  As shown in FIG. 3, the dynamic vibration absorber 22 includes a first substrate 26, a second substrate 27 disposed substantially in parallel on the first substrate 26 via a predetermined interval, A third substrate 28 disposed substantially in parallel on the second substrate 27 via the set interval and a substantially parallel line on the third substrate 28 via the set interval. And a fourth substrate 29 arranged. Each board | substrate 26-29 is comprised, for example with metal plates, such as iron, copper, and aluminum.

  As for the weights of the four substrates 26 to 29, the first substrate 26 is the heaviest, the second substrate 27 is a medium weight, the third substrate 28 is a light weight, The substrate 29 has an extremely light weight. That is, the weights of the four substrates 26 to 29 are configured to become lighter from the bottom to the top. In this case, the thickness dimensions of the four substrates 26 to 29 may be the same thickness dimension, or may be configured to become thinner from the bottom to the top. The three substrates 26 to 28 may have the same thickness dimension, and only the fourth substrate 29 may be thinned. Further, the size of the four substrates 26 to 29 is preferably configured so as to decrease from bottom to top.

  Now, between the first substrate 26 and the second substrate 27, for example, four round bar-shaped elastic members 30 are disposed as spacers at, for example, four corners of the substrates 26 and 27. Between the second substrate 27 and the third substrate 28, for example, four round bar-shaped elastic members 31 are disposed as spacers, for example, at the center of each side of the substrates 27 and 28. The diameter of the elastic member 31 is configured to be slightly smaller than the diameter of the elastic member 30. Between the third substrate 28 and the fourth substrate 29, for example, four round bar-shaped elastic members 32 are disposed as spacers at, for example, four corners of the substrates 28 and 29. The diameter dimension of the elastic member 32 is configured to be slightly smaller than the diameter dimension of the elastic member 31.

  A weight 33 is detachably disposed in the space between the third substrate 28 and the fourth substrate 29. In the case of this configuration, the dynamic vibration absorber 22 is configured to elastically support the removable weight 33. The weight 33 is constituted by a laminated body 35 in which a plurality of metal plates 34 are laminated, for example. The metal plate 34 is made of a metal such as iron, copper, or aluminum. As shown in FIGS. 4 and 5, the stacked body 35 is configured so that the number of stacked metal plates 34 can be adjusted, and the weight of the weight 33 can be adjusted. In this case, the metal plate 34 of the laminated body 35 is detachably fixed on the third substrate 28 by, for example, screws or bands (not shown).

  Further, since the elastic members 30, 31, and 32 have the same specific structure except for the diameter size, the structure of the elastic member 30 will be described with reference to FIGS. The elastic member 30 includes screw members 36 and 36 provided at both ends, and a columnar vibration-proof rubber 37 provided between the screw members 36 and 36. The screw member 36 is made of metal, resin, or the like, and has a flange portion 36a and a screw portion 36b. The screw member 36 and the vibration isolating rubber 37 are integrated by, for example, adhesion. The anti-vibration rubber 37 is made of, for example, silicon rubber or urethane rubber.

  Regarding the hardness of the anti-vibration rubber 37 of the elastic members 30, 31, 32, the anti-vibration rubber 37 of the lower elastic member 30 is the hardest, and the anti-vibration rubber 37 of the middle elastic member 31 is moderately hard. The anti-vibration rubber 37 of the upper elastic member 32 is the softest. That is, the hardness of the anti-vibration rubber 37 of the elastic members 30, 31, and 32 is configured to become softer from the bottom to the top. In addition, the diameter of the anti-vibration rubber 37 of the elastic members 30, 31, and 32 is configured to decrease from the bottom to the top. Further, the vertical length of the vibration isolating rubber 37 of the elastic members 30, 31, and 32 may be configured to be the same length, or may be shortened from bottom to top. The length may be appropriately adjusted.

  In this embodiment, when the first substrate 26 and the second substrate 27 are connected, as shown in FIG. 3, four elastic holes are formed in the through holes formed at the four corners of the first substrate 26. The lower screw portions 36 b of the member 30 are inserted, and the upper screw portions 36 b of the four elastic members 30 are inserted into the through holes formed at the four corners of the second substrate 27. Then, the nut is fastened and fixed to the screw portion 36b protruding downward from the first substrate 26, and the nut 38 is fastened and fixed to the screw portion 36b protruding upward from the second substrate 27. Thereby, the first substrate 26 and the second substrate 27 are connected.

  Then, the second substrate 27 and the third substrate 28 are connected in the same manner using the four elastic members 31. Further, the third substrate 28 and the fourth substrate 29 are connected in the same manner using the four elastic members 32. Further, with the fourth substrate 29 removed, the weight 33, that is, the laminated body 35 is attached and fixed on the third substrate 28 with screws, bands, or the like. Then, the fourth substrate 29 is connected to the third substrate 28 using the elastic member 32. The thus configured dynamic vibration absorber 22 is fixedly mounted on the reinforcing plate 24 with screws or the like, for example.

  In addition, an opening 6 a for inserting and removing the dynamic vibration absorber 22 is formed in a portion corresponding to the dynamic vibration absorber 22 in the rear portion of the top plate 6 of the outer box 1. A lid 39 for opening and closing the opening 6a is provided at the rear edge of the opening 6a so as to be rotatable via a hinge 39a. The end of the lid 39 is fixed to the top plate 6 by screws (not shown). In the case of this configuration, the installation person or the repairer of the washing machine removes the screw and opens the lid 39, so that the dynamic vibration absorber 22 is removed from the connection member 25 through the opening 6a. Or can be attached to the connecting member 25, that is, a detachable configuration. Further, the fourth substrate 29 of the dynamic vibration absorber 22 is removed through the opening 6a, and the weight 33 of the dynamic vibration absorber 22 is removed from the third substrate 28 or attached to the third substrate 28. Or the number of metal plates 34 of the stacked body 35 of the weights 33 can be increased or decreased.

  In this embodiment having such a configuration, the left and right side plates 2 and 3 of the outer box 1 are provided with two reinforcing plates 23 and 24 in a bridge shape and are connected so as to connect the two reinforcing plates 23 and 24. Since the member 25 is provided and the dynamic vibration absorber 22 is arranged on the reinforcing plate 24, the vibration of the casing of the washing machine 1 can be reduced. You don't have to worry about it. In particular, in the present embodiment, since the two reinforcing plates 23 and 24 are connected by the connecting member 25, the vibration of the front part of the casing of the washing machine 1 and the rear part of the casing of the washing machine 1 are configured. Vibrations can be integrated, and vibrations at the front and rear of the casing of the washing machine 1 can be effectively reduced by one dynamic vibration absorber 22. In the case where the connecting member 25 is not provided, the vibrations of the front part and the rear part of the casing of the washing machine 1 are separated, so that one dynamic vibration absorber 22 can effectively reduce the vibration of the casing. May not be reduced.

  Moreover, in the said embodiment, since the dynamic vibration absorber 22 was comprised so that it could attach or detach from the outside via the opening part 6a, the vibration reduction countermeasure of the housing | casing of the washing machine 1 can be implement | achieved easily, The characteristics of the dynamic vibration absorber 22, that is, the resonance frequency can be easily adjusted. In particular, according to the above embodiment, in response to the installation environment of the washing machine and the usage situation, when the washing machine is installed, or there is a notification from the user that the washing machine has a large vibration, When it corresponds, since it is the structure which can attach and detach the dynamic vibration absorber 22 from the outside, it can take measures after installation of a washing machine according to the vibration condition of a washing machine.

  Furthermore, in the above-described embodiment, the weight 33 is configured by the laminated body 35 of the metal plates 34 that are plate-like members, and is configured so that the number of laminated metal plates 34 of the laminated body 35 can be adjusted. The resonance frequency of 22 can be adjusted more easily.

  In the above embodiment, the dynamic vibration absorber 22 is configured by stacking a plurality of substrates 26 to 29 in two or more stages via the elastic members 30, 31, and 32, and the weight of the upper substrate is that of the lower substrate. It was configured to be lighter than the weight. In this case, if the dynamic vibration absorbers 22 are stacked in two or more stages, generally the upper part is more likely to swing than the lower part, so that the weight of the upper substrate is made lighter than the weight of the lower substrate. By comprising, the vibration of the housing | casing of the washing machine 1 can be reduced efficiently.

  In the above embodiment, the dynamic vibration absorber 22 is configured by stacking a plurality of substrates 26 to 29 in three or more stages via the elastic members 30, 31, 32, and the hardness of the upper elastic member is the lower elastic member. It was constituted so as to be smaller than the hardness. In this case, if the dynamic vibration absorbers 22 are stacked in three or more stages, generally the upper part is more likely to swing than the lower part, so that the hardness of the upper elastic member is smaller than the hardness of the lower elastic member. By constituting in this way, the vibration of the casing of the washing machine 1 can be efficiently reduced. Furthermore, in the said embodiment, since it comprised so that the four elastic members 30, 31, and 32 used as the spacer between board | substrates 26-29 might each be provided, stability as the structure of the dynamic vibration absorber 22 is improved. Can do.

  Moreover, in the said embodiment, you may comprise so that the thickness dimension may differ as the metal plate 34 of the laminated body 35. FIG. If comprised in this way, since the weight of the laminated body 35, ie, the weight 33, can be adjusted finely, the resonant frequency of the dynamic vibration absorber 22 can be adjusted further finely.

  Moreover, in the said embodiment, you may comprise so that the thing from which a material differs as the metal plate 34 of the laminated body 35 may exist. If comprised in this way, since the weight of the laminated body 35, ie, the weight 33, can be adjusted finely, the resonant frequency of the dynamic vibration absorber 22 can be adjusted further finely.

  In the above embodiment, the elastic members 30, 31, and 32 are configured such that the diameter of the upper elastic member is smaller than the diameter of the lower elastic member. Finer adjustments can be made.

(Second Embodiment)
8 to 11 show a second embodiment. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment. In the second embodiment, the weight 33 is configured to use a plurality of screws instead of the stacked body 35 of the metal plates 34.

  Specifically, as shown in FIGS. 8 to 10, a plurality of, for example, nine screw holes 40 are formed in the fourth substrate 29. And it is comprised so that the screw 41 shown also in FIG. In this case, the diameter of the screw 41, that is, the diameter of the screw hole 40 is of a plurality of sizes, for example, the largest one is one, the middle one is six, and the smallest one is. About 6 are prepared.

  The configuration of the second embodiment other than that described above is the same as the configuration of the first embodiment. Therefore, in the second embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, according to the second embodiment, since the plurality of screws 41 are used as the weight 33, the screws 41 can be easily attached and detached. Accordingly, the weight increase / decrease adjustment of the weight 33, that is, the characteristic adjustment of the dynamic vibration absorber 22 can be easily performed.

(Other embodiments)
In addition to the plurality of embodiments described above, the following configuration may be added.
In each of the above embodiments, the plurality of substrates 26 to 29 are configured to be stacked in three stages via the elastic members 30, 31, and 32. However, the present invention is not limited to this and may be configured in two stages. You may comprise in four steps or more.

  In the second embodiment, 13 screws 41 and screw holes 40 are formed in the fourth substrate 29. However, the present invention is not limited to this, and the screws 41 and screw holes 40 are formed in the fourth substrate 29. You may comprise so that it may form 12 or less or 14 or more.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is an outer box, 2 and 3 are side plates, 6 is a top plate, 8 is a laundry doorway, 9 is a door, 11 is a control device, 14 is a suspension, 15 is a water tank, 16 is a drum, and 17 is for washing. Motor, 22 is a dynamic vibration absorber, 23 and 24 are reinforcing plates, 25 is a connecting member, 26 is a first substrate, 27 is a second substrate, 28 is a third substrate, 29 is a fourth substrate, and 30 is Elastic member, 31 is an elastic member, 32 is an elastic member, 33 is a weight, 34 is a metal plate (plate-like member), 35 is a laminate, 36 is a screw member, 37 is an anti-vibration rubber, 38 is a nut, 39 is a lid , 40 is a screw hole, and 41 is a screw.

Claims (11)

An outer box, a water tank provided in the outer box for receiving water, a drum rotatably provided in the water tank for storing laundry, a motor for rotating the drum, and an elastic support for the water tank A drum-type washing machine equipped with a vibration isolator,
Two or more reinforcing plates provided in a bridge shape on the left and right side plates of the outer box;
A connecting member provided to connect the two or more reinforcing plates;
A drum type washing machine comprising: a dynamic vibration absorber disposed on the reinforcing plate or the connecting member.   The drum type washing machine according to claim 1, wherein the dynamic vibration absorber is configured to be detachable from the outside. The weight is composed of a laminate of plate-like members,
The drum-type washing machine according to claim 2, wherein the laminated body is configured so that the number of laminated plate-like members can be adjusted.   The drum type washing machine according to claim 2, wherein the weight is composed of a plurality of detachable screw members. The dynamic vibration absorber is configured by stacking a plurality of substrates in two or more stages via an elastic member,
The drum type washing machine according to claim 1, wherein the weight of the upper substrate is lighter than the weight of the lower substrate. The dynamic vibration absorber is configured by stacking a plurality of substrates in three or more stages via an elastic member,
The drum type washing machine according to claim 1, wherein the hardness of the upper elastic member is smaller than the hardness of the lower elastic member.   The drum-type washing machine according to claim 3, wherein the plate-like members of the laminate are configured so that there are different thickness dimensions.   The drum-type washing machine according to claim 4, wherein the screw-shaped member of the weight is configured such that there are those having different diameters.   The drum-type washing machine according to claim 3, wherein the plate-like members of the laminate are configured so that there are different materials.   The drum-type washing machine according to claim 4, wherein the screw-like member of the weight is configured to have a different material. The drum type washing machine according to claim 6, wherein the elastic member is configured such that a diameter dimension of an upper elastic member is smaller than a diameter dimension of a lower elastic member.

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