JP2011131095A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine with a coupling structure for a washing and drying tank to a balancer, capable of easily and securely coupling the balancer to an upper inner part of the washing and drying tank even when the diameter of the balancer is smaller due to seasonal temperature difference, and improving workability in assembling work. <P>SOLUTION: In the coupling structure for the washing and drying tank 4 to the balancer 5 in the washing tank, the balancer 5 in a ring form is screwed to the upper inner part of the washing and drying tank 4. projecting parts 9 are provided at a proper interval on a junction surface of the washing and drying tank 4 with the balancer 5, and screw holes 7 are respectively provided on the projecting parts 9 and flat parts 4a without the projecting parts 9. Either of the screw holes 7 on the projecting parts 9 and the screw holes 7 on the flat parts 4a are selected, and the selected screw holes 7 are fitted to screw holes 6 provided on the balancer 5, so that the balancer 5 is fixed to the washing and drying tank 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a coupling structure between a washing / dehydrating tub and a balancer of a washing machine.

  As is well known, for example, as shown in FIG. 14, a fully automatic one-tub type washing machine suspends a water tank 2 through a vibration isolator in the outer box 1 so as to be freely swingable, and rotates to the bottom in the water tank 2. A washing / dehydrating tub 4 provided with wings 3 is rotatably arranged, and the upper edge of the washing / dehydrating tub 4 is caused by the bias of the laundry stored in the washing / dehydrating tub 4. A hollow ring-shaped balancer 5 is attached to prevent the dehydration tank 4 from swinging greatly during the dehydration operation.

  As shown in FIG. 13, the balancer 5 is inserted at the lower part into the upper inner side of the washing / dehydrating tub 4. The outer wall portion of the balancer 5 is reduced in diameter to form a coupling recess 5 a with the washing / dehydrating tub 4. A plurality of screw holes 6 are formed at appropriate intervals in the coupling recess 5a. Also, a plurality of screw holes 7 are formed at appropriate intervals on the joint surface with the balancer 5 on the side of the washing and dewatering tub 4 so that the screw holes 6 and 7 are aligned. The balancer 5 is fixed to the upper edge of the washing and dewatering tub 4 by abutting the coupling recess 5a of the balancer 5 and inserting a screw 8 therein.

  As a material, the washing and dewatering tub 4 is made of stainless steel, while the balancer 5 is made of a synthetic resin such as polypropylene (PP). For this reason, the balancer 5 made of synthetic resin shrinks more than the stainless steel washing and dewatering tub 4 due to temperature changes in winter and the like, so the diameter of the balancer 5 becomes smaller. As a result, if the interval between the screw portions connecting the washing / dehydrating tub 4 and the balancer 5 is large, the washing / dehydrating tub 4 bulges outward at this portion as shown in FIG. There arises a problem that the protruding portion 15 comes into contact with the water tank disposed outside.

  In addition, if the outer diameter of the balancer 5 is formed so as to match the inner diameter of the washing / dehydrating tub 4 at a temperature other than the winter season, Although there is no problem, since the balancer 5 contracts in the winter and the diameter becomes smaller, a gap is formed between the washing and dehydrating tub 4 and the balancer 5 disposed on the inside thereof, and the washing and dehydrating tub 4 And the balancer 5 are difficult to closely adhere to each other, and it becomes difficult to perform the operation of connecting the two.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and even if the balancer diameter becomes small due to the temperature difference depending on the season, the balancer can be easily and reliably coupled to the upper inside of the washing and dewatering tank, and the workability of the assembly work It is an object of the present invention to provide a combined structure of a washing / dehydrating tub and a balancer of a washing machine that can improve the efficiency of the washing machine.

  In order to achieve the above-described object, the present invention provides a washing / dehydrating tub and a balancer in a washing machine in which a ring-shaped balancer is screwed and fixed inside the upper portion of the washing / dehydrating tub. Protrusions are provided at appropriate intervals on the joint surface of the dewatering tank with the balancer, screw holes are provided in each of the projecting part and the flat part where the projecting part is not formed, and the screw hole or flat part provided in the projecting part One of the screw holes provided on the balancer is selected, and the selected screw hole and the screw hole provided on the balancer are matched to fix the balancer to the washing and dewatering tub.

  As a result, when the diameter of the balancer becomes smaller due to temperature differences, such as in winter, it is easy to assemble if the balancer is coupled to the washing / dehydrating tub using the screw holes formed in the protruding part of the washing / dehydrating tub. In addition, the washing and dewatering tank does not bulge outward between the screwing points.

  On the other hand, since the diameter of the balancer is not reduced in seasons other than the winter season, the balancer is coupled to the washing and dewatering tub using screw holes formed in the flat portion of the washing and dewatering tub. Therefore, it is possible to cope with a balancer having a diameter different depending on the temperature difference depending on the season in the washing / dehydrating tank having the same shape.

  Secondly, by providing the screw hole of the balancer in the protruding portion formed in the balancer, the strength of the screwing location can be ensured and the screwing location can be easily identified, so that the assembly workability is improved.

  Thirdly, in the combined structure of the washing and dewatering tub and the balancer of the washing machine in which the ring-shaped balancer is screwed and fixed to the upper inner side of the washing and dewatering tub, the bonding surface of the balancer with the washing and dehydrating tub is appropriately set. Protrusions are provided at intervals, screw holes are provided in each of the projecting part and the flat part where no projecting part is formed, and either a screw hole provided in the projecting part or a screw hole provided in the flat part is selected. Then, the balancer is fixed to the washing and dewatering tub by matching the selected screw hole with the screw hole provided in the washing and dewatering tub.

  As a result, when the diameter of the balancer is reduced due to temperature differences such as in winter, if the balancer is coupled to the washing and dewatering tub using the screw holes formed in the protruding part of the balancer, it can be easily assembled, The washing and dewatering tank does not bulge outward between the screwing points.

  On the other hand, since the diameter of the balancer is not reduced in seasons other than the winter season, the balancer is coupled to the washing and dewatering tub using screw holes formed in the flat portion of the balancer. Therefore, even if the diameter of the balancer varies depending on the temperature difference depending on the season, the balancer having the same shape can be used as a washing and dewatering tank.

  Fourth, in the combined structure of the washing and dewatering tub and the balancer of the washing machine for fixing the ring-shaped balancer by screwing to the upper inside of the washing and dewatering tub, the washing and dewatering tub is formed in a polygonal cylinder shape, A screw hole is provided in the joint surface with the balancer, positioned on a flat surface other than the corners of the polygon, and protrusions are formed at appropriate intervals on the joint surface of the balancer with the washing / dehydrating tub. A screw hole is provided in each of the flat part where the surface is not formed, and either the screw hole provided in the projecting part on the balancer side or the screw hole provided in the flat part is selected, and the selected screw hole and the washing / dehydrating tub are selected. The balancer is fixed to the washing and dewatering tub by matching the screw holes provided in the flat part of the washing and dewatering tank.

  As a result, when the diameter of the balancer is reduced due to temperature differences such as in winter, if the balancer is coupled to the washing and dewatering tub using the screw holes formed in the protruding part of the balancer, it can be easily assembled, The washing and dewatering tank does not bulge outward between the screwing points.

  On the other hand, since the diameter of the balancer is not reduced in seasons other than the winter season, the balancer is coupled to the washing and dewatering tub using screw holes formed in the flat portion of the balancer. In this state, the protrusion formed on the balancer enters the space formed at the corner of the washing and dewatering tub having a polygonal cylinder diameter, so that the protrusion does not hinder the connection. Therefore, even when the diameter of the balancer varies depending on the temperature difference depending on the season, the balancer and the washing and dewatering tank having the same shape can be combined.

  Fifth, by providing a notch in the periphery of the washing and dewatering tub located above the formation site of the screw hole provided in the washing and dewatering tub, the inside of the washing and dewatering tub is changed by temperature change during assembly. Even if the balancer fits tightly, elasticity can be imparted to the upper edge of the washing and dewatering tub so that it can be opened and assembly work can be facilitated.

  As described above, the washing / dehydrating tub and balancer coupling structure of the washing machine according to the present invention is firstly the washing / dehydrating tub of the washing machine in which the ring-shaped balancer is screwed and fixed inside the upper part of the washing / dehydrating tub. In the coupling structure of the dewatering tank and the balancer, protrusions are provided at appropriate intervals on the joint surface of the washing and dewatering tank with the balancer, and screw holes are provided in each of the protrusions and the flat surface where the protrusions are not formed. Then, either the screw hole provided in the projecting part or the screw hole provided in the flat part is selected, and the selected screw hole and the screw hole provided in the balancer are matched to fix the balancer to the washing and dewatering tub.

  As a result, when the diameter of the balancer becomes smaller due to temperature differences, such as in winter, it is easy to assemble if the balancer is coupled to the washing / dehydrating tub using the screw holes formed in the protruding part of the washing / dehydrating tub. In addition, the washing and dewatering tank does not bulge outward between the screwing points.

  On the other hand, since the diameter of the balancer is not reduced in seasons other than the winter season, the balancer is coupled to the washing and dewatering tub using screw holes formed in the flat portion of the washing and dewatering tub. Therefore, it is possible to cope with a balancer having a diameter different depending on the temperature difference depending on the season in the washing / dehydrating tank having the same shape.

  Secondly, by providing the screw hole of the balancer in the protruding portion formed in the balancer, the strength of the screwing location can be ensured and the screwing location can be easily identified, so that the assembly workability is improved.

  Thirdly, in the combined structure of the washing and dewatering tub and the balancer of the washing machine in which the ring-shaped balancer is screwed and fixed to the upper inner side of the washing and dewatering tub, the bonding surface of the balancer with the washing and dehydrating tub is appropriately set. Protrusions are provided at intervals, screw holes are provided in each of the projecting part and the flat part where no projecting part is formed, and either a screw hole provided in the projecting part or a screw hole provided in the flat part is selected. Then, the balancer is fixed to the washing and dewatering tub by matching the selected screw hole with the screw hole provided in the washing and dewatering tub.

  As a result, when the diameter of the balancer is reduced due to temperature differences such as in winter, if the balancer is coupled to the washing and dewatering tub using the screw holes formed in the protruding part of the balancer, it can be easily assembled, The washing and dewatering tank does not bulge outward between the screwing points.

  On the other hand, since the diameter of the balancer is not reduced in seasons other than the winter season, the balancer is coupled to the washing and dewatering tub using screw holes formed in the flat portion of the balancer. Therefore, even if the diameter of the balancer varies depending on the temperature difference depending on the season, the balancer having the same shape can be used as a washing and dewatering tank.

  Fourth, in the combined structure of the washing and dewatering tub and the balancer of the washing machine for fixing the ring-shaped balancer by screwing to the upper inside of the washing and dewatering tub, the washing and dewatering tub is formed in a polygonal cylinder shape, A screw hole is provided in the joint surface with the balancer, positioned on a flat surface other than the corners of the polygon, and protrusions are formed at appropriate intervals on the joint surface of the balancer with the washing / dehydrating tub. A screw hole is provided in each of the flat part where the surface is not formed, and either the screw hole provided in the projecting part on the balancer side or the screw hole provided in the flat part is selected, and the selected screw hole and the washing / dehydrating tub are selected. The balancer is fixed to the washing and dewatering tub by matching the screw holes provided in the flat part of the washing and dewatering tank.

  As a result, when the diameter of the balancer is reduced due to temperature differences such as in winter, if the balancer is coupled to the washing and dewatering tub using the screw holes formed in the protruding part of the balancer, it can be easily assembled, The washing and dewatering tank does not bulge outward between the screwing points.

  On the other hand, since the diameter of the balancer is not reduced in seasons other than the winter season, the balancer is coupled to the washing and dewatering tub using screw holes formed in the flat portion of the balancer. In this state, the protrusion formed on the balancer enters the space formed at the corner of the washing and dewatering tub having a polygonal cylinder diameter, so that the protrusion does not hinder the connection. Therefore, even when the diameter of the balancer varies depending on the temperature difference depending on the season, the balancer and the washing and dewatering tank having the same shape can be combined.

  Fifth, by providing a notch in the periphery of the washing and dewatering tub located above the formation site of the screw hole provided in the washing and dewatering tub, the inside of the washing and dewatering tub is changed by temperature change during assembly. Even if the balancer fits tightly, elasticity can be imparted to the upper edge of the washing and dewatering tub so that it can be opened and assembly work can be facilitated.

It is a disassembled perspective view of the principal part which shows 1st Embodiment of the coupling | bonding structure of the washing and dewatering tub and balancer of the washing machine of this invention. It is a vertical side view of the combined state in seasons other than the winter showing the first embodiment of the combined structure of the washing and dewatering tub and the balancer of the washing machine of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a vertical side view of the combined state in the winter which shows 1st Embodiment of the combined structure of the washing and dewatering tub and balancer of the washing machine of this invention. It is a disassembled perspective view of the principal part which shows 2nd Embodiment of the coupling | bonding structure of the washing and dewatering tank and balancer of the washing machine of this invention. It is a vertical side view of the combined state in seasons other than the winter showing the second embodiment of the combined structure of the washing and dewatering tub and the balancer of the washing machine of the present invention. It is a vertical side view of the coupling | bonding state in the winter which shows 2nd Embodiment of the coupling | bonding structure of the washing and dewatering tub and balancer of the washing machine of this invention. It is a top view which shows 3rd Embodiment of the coupling | bonding structure of the washing and dewatering tub and balancer of the washing machine of this invention. It is a disassembled perspective view of the principal part which shows 3rd Embodiment of the coupling | bonding structure of the washing and dewatering tub and balancer of the washing machine of this invention. It is a top view of the combined state in the winter which shows 3rd Embodiment of the combined structure of the washing and dewatering tub and balancer of the washing machine of this invention. It is a top view of the corner | angular part of the washing | cleaning and dewatering tank of the combined state in seasons other than the winter which shows 3rd Embodiment of the combined structure of the washing and dewatering tank and balancer of the washing machine of this invention. It is a top view of the combined state in seasons other than the winter showing the third embodiment of the combined structure of the washing and dewatering tub and the balancer of the washing machine of the present invention. It is a partial front view which shows the principal part of the washing and dewatering tank of the combined structure of the washing and dewatering tank and balancer of the washing machine of this invention. It is a vertical side view which shows embodiment of the coupling | bonding structure of the washing and dewatering tank and balancer of the washing machine of this invention. 1 is an overall perspective view of a washing machine. It is a perspective view of the principal part of the joint structure of the washing and dewatering tub and balancer of the conventional washing machine.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partial exploded perspective view showing a first embodiment of a combined structure of a washing and dewatering tub and a balancer of a washing machine according to the present invention. The overall structure of the washing machine is as already described with reference to FIGS. Therefore, detailed description here is omitted.

  In the first embodiment, protrusions 9 by, for example, embossing are provided at appropriate intervals on the joint surface of the washing and dewatering tub 4 made of a metal such as stainless steel with the balancer 5, and the protrusions 9 and 9 are formed. A screw hole 7 is provided in each of the flat portions 4a that are not formed, and on the other hand, on the side of the balancer 5 made of a synthetic resin such as polypropylene, a coupling recess 5a formed at the joint with the washing and dewatering tub 4 is appropriately spaced. A trapezoidal protrusion 10 is provided, and a screw hole 6 is provided in the protrusion 10.

  In order to fix the balancer 5 to the washing / dehydrating tub 4, the balancer 5 is not shrunk due to the temperature difference in the season other than the winter season. As shown, the flat portion 4a of the washing and dewatering tub 4 and the protruding portion 10 formed in the coupling recess 5a of the balancer 5 come into contact with each other, and the screw holes 6 and 7 are matched. Therefore, if the screw 8 is inserted into the screw holes 6 and 7, the balancer 5 is fixed to the upper inside of the washing and dewatering tub 4.

  When the balancer 5 is fixed to the washing / dehydrating tub 4 in winter, the balancer 5 is contracted due to temperature change and the overall diameter is reduced. There is a gap with the balancer 5. Therefore, as shown in FIG. 3, the protruding portion 9 formed in the washing and dewatering tub 4 and the coupling recess 5 a of the balancer 5 are formed so that no gap is generated at the connecting portion between the washing and dewatering tub 4 and the balancer 5. The protruding portion 10 is joined, the screw holes 6 and 7 are matched, and the screw 8 is inserted into the screw holes 6 and 7 to fix the balancer 5 to the upper inside of the washing and dewatering tub 4.

  4 to 6 show a second embodiment, and a balancer 5 made of a synthetic resin such as polypropylene has a trapezoidal protrusion at an appropriate interval in a coupling recess 5a formed at a joint with the washing and dewatering tub 4. A screw hole 6 is provided in the flat part 5b in which the protrusion 10 and the protrusion 10 are not formed. On the other hand, the protrusion 10 is provided in the washing and dehydrating tub 4 made of metal such as stainless steel. And the screw holes 7 are provided at appropriate intervals in the flat portion 4a that is a joint surface between the recess 16 and the balancer 5.

  In order to fix the balancer 5 to the washing / dehydrating tub 4, the balancer 5 is not shrunk due to the temperature difference in the seasons other than the winter season. Therefore, if the balancer 5 is joined to the upper inside of the washing / dehydrating tub 4, FIG. As shown in a), the flat surface portion 4a of the washing and dewatering tub 4 and the flat surface portion 5b of the coupling recess 5a of the balancer 5 come into contact with each other, and the screw holes 6 and 7 are matched. Therefore, if the screw 8 is inserted into the screw holes 6 and 7, the balancer 5 is fixed to the upper inside of the washing and dewatering tub 4. In this state, the protruding portion 10 protrudes from the balancer 5 side toward the washing / dehydrating tub 4, but the protruding portion 10 is fitted into a recess 16 formed in the washing / dehydrating tub 4 as shown in FIG. Therefore, the protrusion 10 does not hinder the fitting between the balancer 5 and the washing / dehydrating tub 4.

  When the balancer 5 is fixed to the washing / dehydrating tub 4 in winter, the balancer 5 is contracted due to temperature change and the overall diameter is reduced. There is a gap between the balancer 5 and the flat portion 5b. Therefore, as shown in FIG. 6, the flat portion 4 a formed in the washing / dehydrating tub 4 and the coupling recess 5 a of the balancer 5 are formed so that no gap is generated at the connecting portion between the washing / dehydrating tub 4 and the balancer 5. The protruding portion 10 is joined, the screw holes 6 and 7 are matched, and the screw 8 is inserted into the screw holes 6 and 7 to fix the balancer 5 to the upper inside of the washing and dewatering tub 4.

  FIGS. 7 to 11 show a third embodiment. As shown in FIGS. 7 and 8, the washing and dewatering tub 4 is formed in, for example, an 18-sided polygonal cylindrical shape, and a flat surface portion 4a other than the polygonal corner portion 4b. The screw hole 7 is provided on the joint surface with the balancer 5. As in the second embodiment, the balancer 5 is provided with a trapezoidal protrusion 10 at an appropriate interval in a coupling recess 5a formed at the joint with the washing and dewatering tub 4, and the protrusion 10 and the protrusion 10 are Screw holes 6 are provided in the flat portion 5b that is not formed.

  In order to fix the balancer 5 to the washing / dehydrating tub 4, since the balancer 5 is not shrunk due to the temperature difference in the season other than the winter season, if the balancer 5 is joined to the upper inside of the washing / dehydrating tub 4, FIG. As shown in FIG. 11, the flat portion 4a of the washing and dewatering tub 4 and the flat portion 5b of the coupling recess 5a of the balancer 5 come into contact with each other, and the screw holes 6 and 7 are matched. Therefore, if the screw 8 is inserted into the screw holes 6 and 7, the balancer 5 is fixed to the upper inside of the washing and dewatering tub 4.

  In this state, the protruding portion 10 formed on the balancer 5 protrudes toward the washing / dehydrating tub 4, and the protruding portion 10 fits into the corner 4 b of the washing / dehydrating tub 4 as shown in FIG. 10. Therefore, the protrusion 10 does not hinder the connection.

  When the balancer 5 is fixed to the washing / dehydrating tub 4 in winter, the balancer 5 is contracted due to temperature change and the overall diameter is reduced. There is a gap between the balancer 5 and the flat portion 5b. Therefore, as shown in FIG. 9, the flat portion 4 a formed in the washing and dewatering tub 4 and the coupling recess 5 a of the balancer 5 are formed so as not to cause a gap at the connecting portion between the washing and dewatering tub 4 and the balancer 5. The protruding portion 10 is joined, the screw holes 6 and 7 are matched, and the screw 8 is inserted into the screw holes 6 and 7 to fix the balancer 5 to the upper inside of the washing and dewatering tub 4.

  Further, in the first to third embodiments, as shown in FIG. 12, a notch 11 is provided at the periphery of the washing / dehydrating tub 4 so as to be positioned above the formation site of the screw hole 7 provided in the washing / dehydrating tub 4. The entire notch 11 was formed in a V shape, and the tip of the notch was formed in a semicircular chamfered portion 11a.

  Therefore, even when the balance between the washing / dehydrating tub 4 and the balancer 5 becomes tight or loosened due to seasonal temperature changes during the operation of fixing the balancer 5 to the washing / dehydrating tub 4, Since elasticity can be imparted to the upper portion of the cum and dewatering tub 4, the upper edge of the washing and dewatering tub 4 can be enlarged in diameter, and the assembling work can be easily performed. In this case, since the chamfered portion 11a is formed in the notch 11, the safety of the operator can be ensured.

DESCRIPTION OF SYMBOLS 1 ... Outer box, 2 ... Water tank, 3 ... Rotary blade, 4 ... Washing and dehydration tank,
4a ... plane part, 4b ... corner part, 5 ... balancer, 5a ... coupling recess,
5b ... plane part, 6 ... screw hole, 7 ... screw hole, 8 ... screw,
9 ... Projection, 10 ... Projection, 11 ... Notch, 11a ... Chamfer,
15 ... bulge part, 16 ... concave part

Claims (2)

A tank,
A cylindrical washing and dewatering tub disposed in the water tub and provided with a plurality of screw holes arranged at appropriate intervals along the circumference;
Each of the plurality of first protrusions that are inserted into the washing and dewatering tub and protrude to the washing and dewatering tub side at appropriate intervals along the circumference of the insertion range are provided in each of the plurality of first protrusions. A washing machine comprising: a screw-shaped balancer provided in contact with and supported by an upper end of the washing and dewatering tank, and a screw hole that is screwed and fixed in alignment with a screw hole provided in the water tank. .   The washing machine according to claim 1, wherein the screw hole provided in the washing and dewatering tub is provided in a second projecting portion projecting toward the balancer side.

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