JP4824466B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine, and more particularly, to a washing machine in which a liquid balance weight is mounted on a spider mounting surface side of a drum.

  FIG. 1 is a cross-sectional view schematically illustrating a conventional washing machine.

  As shown in FIG. 1, a conventional washing machine has a cabinet 1 having an outer shape, a tab 2 installed in the cabinet 1 for containing washing water, and rotatably installed inside the tab 2. The drum 3 includes a drum 3 that rotates an object m and washing water by a lifter 3 a, and a motor 4 that is installed on the back surface of the tab 2 and rotates the drum 3.

  On the front surface of the cabinet 1, a cloth take-in / out hole 1a and a door 1b for opening and closing the cloth take-in / out hole 1a are installed.

  An opening 2a is formed on the front surface of the tab 2 behind the cloth take-in / out hole 1a. The tab 2 is suspended in the cabinet 1 by being connected to the upper portion of the cabinet 1 by a spring 2b, and can be buffered in the cabinet 1 by being connected to the lower portion of the cabinet 1 by a damper 2c. Supported by

  The tab 2 is provided with a gasket 2d that is installed between the opening 2a and the cloth loading / unloading hole 1a of the cabinet 1.

  The drum 3 is provided with the lifter 3a protruding from the inner surface thereof.

  The drum 3 is provided with a plurality of holes 3 b for allowing the washing water accommodated in the tab 2 to flow into the drum 3.

  The drum 3 is provided with an opening 3c behind the cloth take-in / out hole 1a.

  A spider 3d is mounted on the back surface of the drum 3.

  The spider 3d includes a shaft mounting portion on which a drive shaft 4a, which will be described later, is mounted, and a plurality of legs that protrude from the shaft mounting portion and are fastened to the drum 3.

  The motor 4 is attached to the spider 3d when the drive shaft 4a passes through the back surface of the tab 2.

  On the other hand, a liquid balance weight 7 for eliminating the unbalance of the drum 3 is installed on the front surface of the drum 3 as shown in FIG.

  A large number of baffles are provided inside the liquid balance weight 7, and when an imbalance occurs in the drum 3, salt water or the like filled in the liquid balance weight 7 is opposite to the unbalance of the drum 3 due to inertia. Leaving the balance will eliminate the imbalance.

  In the conventional washing machine, when the laundry is eccentric to the front side in the drum 3 and unbalance occurs, the laundry and the liquid balance weight 7 are placed on substantially the same axis. Yes. However, when the laundry m is decentered on the rear side in the drum 3 and unbalance occurs on the rear side in the drum 3, the unbalance direction f1 and the centrifugal force direction f2 of the liquid balance weight 7 act diagonally. However, there is a problem that the balancing effect by the liquid balance weight 7 cannot be expected and the vibration increases.

  On the other hand, if a liquid balance weight (not shown) is additionally mounted on the back side of the drum 3, the above problem can be solved. In this case, the additionally mounted balance weight collides with the tab 2. There is sorrow. Further, if the front and rear length of the drum 3 is reduced in consideration of the collision, the washing capacity is reduced, and the front and rear lengths of the tab 2 and the cabinet 1 are increased. .

  The present invention is for solving the above-mentioned problems, and an object of the present invention is to provide a washing machine capable of minimizing vibration due to unbalance without reducing the washing capacity or increasing the size of the washing machine. There is.

  It is another object of the present invention to provide a washing machine capable of eliminating the unbalance even if the unbalance occurs on either side of the drum.

  Another object of the present invention is to provide a washing machine capable of maximizing the volume of the liquid balance weight.

  In order to achieve the above object, a washing machine according to the present invention includes a drum in which cloth is accommodated; a spider mounted on one surface of the drum; a drive shaft mounted on the spider; and the spider in the drum. A liquid balance weight mounted on the mounting surface, wherein the liquid balance weight is formed with a mounting groove in which a leg portion of the spider is mounted.

  A fastening hole is formed in the drum, a fastening boss corresponding to the fastening hole is formed in the liquid balance weight, and a fastening member is fastened to the fastening hole and the fastening boss in the drum and the liquid balance weight. It is characterized by being fixed.

  A fastening hole is formed in the liquid balance weight, a fastening boss corresponding to the fastening hole is formed in the spider, and a fastening member is fastened to the fastening hole and the fastening boss in the liquid balance weight and the spider. It is characterized by being fixed.

  The liquid balance weight is characterized in that a passage through which liquid passes is formed in a portion where the mounting groove is formed.

  The washing machine may further include a second liquid balance weight installed on the opposite side of the liquid balance weight in the drum.

  A fastening hole is formed in the drum, a fastening boss corresponding to the fastening hole is formed in the second liquid balance weight, and the drum and the second liquid balance weight are fastened to the fastening hole and the fastening boss. The member is fastened and fixed.

  The drum is composed of a drum body, a drum front which is bent and coupled to the front end of the drum body and has a cloth taking-in / out hole, and a drum rear which is bent and coupled to the rear end of the drum body. Features.

  The drum rear includes a spider insertion portion for inserting the spider and a balance weight insertion portion for inserting the liquid balance weight.

  The drum front may be formed with a balance weight insertion portion for inserting the second liquid balance weight.

  In the washing machine according to the present invention, the liquid balance weight is installed on the mounting surface of the spider in the drum, the mounting groove for avoiding the leg portion of the spider is formed in the liquid balance weight, and the liquid balance weight is drummed. As a result, the vibration due to imbalance can be minimized without reducing the washing capacity and increasing the size of the washing machine.

  In addition, the washing machine according to the present invention has an effect that the passage through which the liquid passes is also formed in the mounting groove forming portion in the liquid balance weight, and the liquid can smoothly flow in the liquid balance weight.

  Further, the washing machine according to the present invention has an effect that the second liquid balance weight is installed on the opposite side of the liquid balance weight in the drum, and this can be solved even if the unbalance is located on either side of the drum. There is.

  In the washing machine according to the present invention, a spider insertion portion into which the spider is inserted is formed in the drum rear, a balance weight insertion portion into which the liquid balance weight is inserted is formed, and the second liquid balance weight is formed on the drum front. By forming the balance weight insertion portion into which the liquid is inserted, there is an effect that the volumes of the liquid balance weight and the second liquid balance weight can be maximized.

  Hereinafter, preferred embodiments of a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 2 is a partially cutaway sectional view showing an embodiment of the washing machine according to the present invention.

  As shown in FIG. 2, the washing machine according to the present embodiment has a cloth taking-in / out hole 11 formed in the front surface of the outer cabinet 10, and a door 12 for opening / closing the cloth taking-in / out hole 11 is rotatable by a hinge. Connected.

  More specifically, the cabinet 10 includes a base 13, a cabinet body 14 that is installed on the upper side of the base 13 and forms both sides and a rear surface of the washing machine, and a washing machine that is installed in front of the cabinet body 14. And a cabinet cover 15 provided with the cloth loading / unloading hole 11 and the door 12, and a top cover 16 installed on the upper part of the cabinet body 14.

  Inside the cabinet 10, a tab 20 is fixedly installed for storing washing water during washing or rinsing.

  FIG. 3 is an exploded perspective view showing a main part of an embodiment of the washing machine according to the present invention.

  2 and 3, the tab 20 includes a tab body 22 that is directly fastened to the cabinet cover 15 with a fastening member such as a screw, and a fastening member such as a screw on the rear end side of the tab body 22. And a tab cover 24 to be coupled.

  The tab main body 22 is provided with an opening 23 behind the cloth take-in / out hole 11.

  The tab cover 24 has an opening 25 at the center thereof.

  On the other hand, on the back side of the tab 20, as shown in FIGS. 2 and 3, a tab bracket 26 and a gasket 28 for closing the opening 25 of the tab cover 24 are installed.

  The gasket 28 prevents washing water from flowing out of the tab 20 and absorbs vibration or impact transmitted from the tab bracket 26 to the tab cover 24 side, and can be contracted or relaxed. Made of elastic material.

  The gasket 28 is formed along the outer periphery of the tab bracket 26 and is installed so as to seal the opening 25 of the tab cover 24.

  Further, as shown in FIGS. 2 and 3, the tab 20 is fastened to the back side of the tab 20 by a fastening member such as a screw and supports a drive shaft 46 of the motor 40 described later. A bearing housing 36 with a bearing 32 is installed.

  The bearing housing 36 is connected to the cabinet 10 by a damper 50, and damper brackets 51 and 52 are installed on the bearing housing 36 and the base 13, respectively, and between the damper brackets 51 and 52. A damper 50 is installed.

  Here, the damper 50 is installed in the vertical direction in order to attenuate vertical vibrations or shocks, or is installed to incline in order to attenuate vibrations or shocks applied in the horizontal component or in the tilt direction. Is done.

  Meanwhile, the bearing housing 36 is provided with a motor 40 for rotating a drum 60 described later.

  As shown in FIG. 2, the motor 40 includes a stator 42 fastened by a fastening member such as a screw to the back side of the bearing housing 36, a rotor 44 that rotates by acting with the stator 42, and a rotor 44 And a mounted drive shaft 46.

  The drive shaft 46 is supported by the bearing 32 through the bearing housing 38 with the rear end of the drive shaft 46 being mounted on the rotor 44, and the back side of the drum 60 through the tab bracket 26. Connected to

  The drum 60 accommodates laundry for washing, rinsing, dewatering and drying processes. The drum 60 is rotatably disposed inside the tab 20 and is supported and rotated by the drive shaft 46.

  The drum 60 has a lying cylindrical shape, and an opening 61 is formed behind the cloth taking-in / out hole 11. Further, through holes 62 and 63 for allowing the washing water in the tab 20 to flow in and out are formed in the peripheral portion and the back surface portion of the drum 60, and the cloth and the washing water flow on the inner peripheral surface thereof. The lifter 64 is protruded.

  2 and 3, a spider 80 connected to the drive shaft 46 is mounted on the back surface of the drum 60, and a liquid balance weight 90 is mounted on the mounting surface of the spider 80. A second liquid balance weight 100 is attached to the opposite side of the liquid balance weight 90.

  As shown in FIG. 2, the spider 80 includes a shaft mounting portion 81 for mounting the drive shaft 46, and a plurality of spiders 80 that protrude from the shaft mounting portion 81 and are fastened to the drum 60 with a fastening member such as a screw. Leg portions 82.

  FIG. 4 is an exploded perspective view showing a main part of one embodiment of the washing machine according to the present invention.

  As shown in FIG. 4, the drum 60 includes a drum body 66 that forms a peripheral portion of the drum 60, a drum front 70 that is bent and coupled to the front end of the drum body 66 and forms a front portion of the drum 60, and A drum rear 74 that is bent and connected to the rear end of the drum body 62 to form the back surface of the drum 60 is formed.

  The drum body 66 has a hollow cylindrical shape with its front and back open and has a front end bent portion 67 coupled to the drum front 70 at the front end and a rear portion coupled to the drum rear 74 at the rear end. An end bent portion 68 is formed.

  In the center of the drum front 70, the opening 61 is formed to project forward.

  The drum front 70 is partially inserted inside the drum body 66, and its peripheral portion 71 is bent forward.

  The front end of the peripheral portion 71 is bent outward and the drum front 70 is coupled so as to surround the front end bent portion 67 of the drum body 66.

  The drum front 70 is mounted by inserting all or part of the second liquid balance weight 100 between the opening 61 and the peripheral portion 71. The drum front 70 is provided with a balance weight insertion portion 72 that has the same shape as the second liquid balance weight 100 and is slightly larger than the second liquid balance weight 100.

  The drum rear 74 is partially inserted inside the drum body 66, and the peripheral portion 75 is bent rearward.

  The drum rear 74 is coupled so that the rear end of the peripheral portion 75 bends outward and surrounds the rear end bent portion 68 of the drum body 66.

  On the other hand, the drum rear 74 is formed with an extended portion 76 protruding so as to expand rearward, and in addition to the extended portion 76, all or part of the spider 80 and the liquid balance weight 90 are inserted and attached. It is what is done. The drum rear 74 has the same shape as the spider 80 and is provided with a spider insertion portion 77 that is slightly larger than the spider 80. The drum rear 74 has the same shape as the liquid balance weight 90 and has a slightly larger balance than the liquid balance weight 90. A weight insert 78 is provided.

  A mounting groove 91 for mounting the leg portion 82 of the spider 80 is formed in the liquid balance weight 90 so as to be inserted into the balance weight insertion portion 78 to the maximum extent.

  The mounting grooves 91 are formed in the same number as the leg portions 82 of the spider 80 and slightly larger than the leg portions 82 of the spider 80.

  FIG. 5 is an enlarged cross-sectional view illustrating a coupling structure of the spider and the liquid balance weight illustrated in FIGS. 3 and 4.

  As shown in FIGS. 4 and 5, the spider 80 is inserted into the spider insertion portion 77 of the drum rear 74 from the rear of the drum rear 74, and a plurality of leg portions 82 are connected to the drum rear 74 and the drum body 66. Fastened with a plurality of fastening members 83.

  That is, the drum body 66 and the drum rear 74 are formed so that the fastening holes 66A and 74A coincide with each other, and the fastening holes that coincide with the fastening holes 66A and 74A are formed at the outer ends of the leg portions 82 of the spider 80. 82A is formed. The spider 80 is assembled with the drum 60 by the fastening member 83 being sequentially inserted into the fastening holes 66A, 74A, and 82A from the outside around the drum 60 and fastened.

  As shown in FIG. 5, the liquid balance weight 90 is provided with a large number of baffles 90A, filled with a liquid S such as salt water, and a passage 90B for allowing the liquid S such as salt water to flow in the circumferential direction. Is formed.

  The liquid balance weight 90 is also formed with a passage 90 </ b> B for allowing a liquid such as salt water to pass inside the portion where the mounting groove 91 is formed.

  As shown in FIGS. 4 and 5, the liquid balance weight 90 is partially or entirely inserted into the balance weight insertion portion 78 of the drum rear 74 from the rear of the drum rear 74, and a plurality of fastening members are attached to the spider 80. Fastened at 92.

  That is, a fastening boss 82B is formed on the spider 80, and a fastening piece 94 provided with a fastening hole 93 is formed on the liquid balance weight 90 so as to protrude toward the inner peripheral side. The liquid balance weight 90 is assembled with the spider 80 by the fastening member 92 being sequentially inserted into the fastening hole 93 and the fastening boss 83 of the fastening piece 94 from the rear of the liquid balance weight 90 and fastened.

  Further, the liquid balance weight 90 is fastened to the drum 60 by a fastening member 95.

  That is, the drum body 66 and the drum rear 74 are formed so that the fastening holes 66B and 74B coincide with each other, and the fastening boss 96 is formed on the outer peripheral surface of the liquid balance weight 90. The liquid balance weight 90 is assembled with the drum 60 by the fastening member 95 being inserted into the fastening holes 66 </ b> B, 74 </ b> B, 96 in order from the outside of the peripheral portion of the drum 60 and fastened.

  FIG. 6 is an enlarged cross-sectional view showing the coupling structure of the second liquid balance weight shown in FIGS. 3 and 4.

  As shown in FIG. 6, the second liquid balance weight 100 is provided with a large number of baffles 100A therein, filled with a liquid S ′ such as salt water, and flows the liquid S ′ such as salt water in the circumferential direction. A passage 100B is formed.

  As shown in FIGS. 4 and 6, the second liquid balance weight 100 is partially or entirely inserted into the balance weight insertion portion 72 of the drum front 74 from the front of the drum front 70 and fastened to the drum 60. Fastened with member 101.

  That is, the drum body 66 and the drum front 70 are formed so that the fastening holes 66C and 70A coincide with each other, and the fastening boss 102 is formed on the outer peripheral surface of the second liquid balance weight 100. The second liquid balance weight 100 is assembled with the drum 60 by the fastening member 101 being sequentially inserted into the fastening holes 66C, 70A, and 102 from the outside of the peripheral portion of the drum 60 and fastened.

  The operation of the present invention configured as described above will be described below.

  First, when the motor 40 is driven, the drive shaft 46 is rotated, and the spider 80 and the drum 60 are also rotated.

  The rotation of the drum 60 performs washing, rinsing, dehydration, drying, and the like of the laundry in the drum 60. The liquid balance weight 90 and the second liquid balance weight 100 cause the drum 60 to be unbalanced. Eliminate.

  Hereinafter, cancellation of unbalance by the liquid balance weight 90 and the second liquid balance weight 100 will be described in detail.

  First, when the laundry is decentered forward in the drum 60, the eccentric force generated by the laundry is almost eliminated by the second liquid balance weight 100, and the effect of eliminating the eccentric force by the liquid balance weight 90 is as described above. The effect of the second liquid balance weight 90 is smaller.

  The fluid S ′ filled in the second liquid balance weight 100 is moved to the opposite side of the laundry to eliminate the eccentric force generated by the laundry, and is placed on the same axis as the laundry. Eccentricity due to the laundry is eliminated.

  On the other hand, the fluid S filled in the liquid balance weight 90 is moved diagonally with respect to the laundry, that is, on the opposite side of the laundry, that is, the laundry, in order to eliminate the eccentric force with respect to the laundry. Since the fluid S moved in the diagonal direction is different in the direction of the force generated by the laundry, the effect of eliminating the eccentric force is smaller than that of the fluid S ′ filled in the second liquid balance weight 100.

  On the other hand, when the laundry is eccentric rearward in the drum 60, the eccentric force generated by the laundry is almost eliminated by the liquid balance weight 90, and the effect of eliminating the eccentric force by the second liquid balance weight 100 is as follows. The effect of the liquid balance weight 100 is smaller.

  The fluid S filled in the liquid balance weight 90 is moved to the opposite side of the laundry to eliminate the eccentric force generated by the laundry, and is placed on the same axis as the laundry. Eliminate the eccentric force caused by.

  On the other hand, the fluid S ′ filled in the second liquid balance weight 100 is moved on the opposite side of the laundry, that is, diagonally with respect to the laundry in order to eliminate the eccentric force with respect to the laundry. Since the fluid S ′ moved in the diagonal direction as described above has different directions of the force generated by the laundry, the effect of eliminating the eccentric force from the fluid S filled in the liquid balance weight 90 is more effective. small.

  That is, the liquid balance weight 90 and the second liquid balance weight 100 operate in a complementary manner.

  On the other hand, the present invention is not limited to the above-described embodiment. When the drum 60 is disposed in the front-rear direction or the left-right direction, and when it is disposed in an inclined manner or vertically. The present invention can also be applied to the case where the tab 20 is not fixed directly to the cabinet 10 but is supported by a spring or a damper as in the prior art, and can be applied within the technical scope to which the present invention belongs. Can be implemented.

It is sectional drawing which showed the conventional washing machine schematically. 1 is a partially cutaway sectional view showing an embodiment of a washing machine according to the present invention. It is the disassembled perspective view which showed the principal part of one Embodiment of the washing machine which concerns on this invention. It is the disassembled perspective view which showed the principal part of one Embodiment of the washing machine which concerns on this invention. FIG. 5 is an enlarged cross-sectional view showing a coupling structure of the spider and the liquid balance weight shown in FIGS. 3 and 4. FIG. 5 is an enlarged cross-sectional view showing a coupling structure of the second liquid balance weight shown in FIGS. 3 and 4.

Explanation of symbols

46 Drive shaft 60 Drum 80 Spider 82 Leg 90 Liquid balance weight 91 Mounting groove

Claims (11)

A tub containing washing water;
A drum in which the cloth is housed;
A spider mounted on one side of the drum;
A drive shaft mounted on the spider;
A first balance weight superimposed on the spider and mounted on one surface of the drum;
A second balance weight installed on a surface of the drum opposite to the first balance weight;
A bearing housing that supports the drive shaft;
A damping device coupled to the bearing housing;
A washing machine characterized by comprising. A fastening hole is formed in the circumferential surface of the drum,
A fastening boss corresponding to the fastening hole is formed on the outer peripheral surface of the first balance weight,
The washing machine according to claim 1, wherein the drum and the first balance weight are fixed by a fastening member fastened to the fastening hole and the fastening boss. A fastening hole is formed in the first balance weight,
A fastening boss corresponding to the fastening hole is formed in the spider,
The washing machine according to claim 1, wherein the first balance weight and the spider are fastened by fastening members to the fastening holes and the fastening bosses.   In the first balance weight, a mounting groove for mounting the spider leg is formed, and a passage for allowing liquid to pass through is formed in a portion where the mounting groove is formed. The washing machine according to claim 1. A fastening hole is formed in the circumferential surface of the drum,
A fastening boss corresponding to the fastening hole is formed in the second balance weight,
The washing machine as set forth in claim 1, wherein the drum and the second balance weight are fixed by fastening a fastening member to the fastening hole and the fastening boss.   The drum is composed of a drum body, a drum front that is bent and coupled to the front end of the drum body, and includes a cloth take-out hole, and a drum rear that is bent and coupled to the rear end of the drum body. The washing machine according to claim 1, wherein   7. The drum rear according to claim 6, wherein a spider insertion portion for inserting the spider is formed in the drum rear, and a balance weight insertion portion for inserting the first balance weight is formed. Washing machine.   The washing machine according to claim 6, wherein a balance weight insertion portion for inserting the second balance weight is formed on the drum front.   The washing machine according to claim 1, wherein the tab includes a tab main body fixedly installed in the cabinet.   The gasket further includes a gasket that is installed between the tab and the bearing housing to prevent washing water from flowing out of the tab and to block vibration transmission from the bearing housing to the tab side. The washing machine according to claim 1.   The washing machine according to claim 1, wherein the first and second balance weights are liquid balance weights.

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