JP2006015122A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine in which attenuation effect of vibration transmitted from a drainage pump to an outer case can be more improved than conventional ones by improving a drainage pump installing structure. <P>SOLUTION: This washing machine includes an outer case 10, a water tub 11 installed in the outer case 10, a drainage pump 30 adapted to drain wash water from the water tub 11, and a fixing device 50 adapted to fix the drainage pump 30. The fixing device 50 includes a support member 51 extending from the drainage pump 30, vibration-proof members 52, 53 arranged to support an outer surface of the support member 51, and fixture members 54, 55 fixed to an inner surface of the outer case 10 and adapted to support outer surfaces of the vibration-proof members 52, 53. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a washing machine, and more particularly, to a washing machine that can prevent vibration transmitted from a drainage pump to an outer case side.

  Generally, a washing machine is a water tank for storing washing water, a rotary tank that is rotatably installed inside the water tank, and has a through hole for dehydration around the water tank, and drives the rotary tank. And a driving device for. The washing machine includes a water supply device for supplying washing water to the inside of the aquarium and a drainage device for draining the water in the aquarium.

  In this washing machine, the drainage device for forcibly discharging the washing water in the aquarium is usually a drain casing having a pump casing with a built-in impeller and a drive motor, and foreign substances of washing water flowing into the drain pump side. And a drainage filter for guiding washing water discharge. Moreover, the drainage pump of this washing machine is fixed to the inner bottom of the outer case.

  However, the washing machine has a structure in which the drain pump support portion is directly fixed to the bottom surface of the outer case of the washing machine by fastening bolts or the like, so that vibration due to the operation of the drain pump passes through the bottom surface of the outer case. There was a problem that operation noise was generated by being transmitted to the outside.

  As a conventional washing machine for eliminating the operation noise of the drainage pump as described above, there is one disclosed in Patent Document 1 (public notice date: January 15, 2000). In this washing machine, a damper member for damping vibration is interposed between a bracket that supports the drainage pump and the frame of the washing machine, and the bracket and the damper member are fixing bolts that penetrate the frame of the washing machine. Fixed by.

According to the drainage pump mounting structure, the vibration of the drainage pump is somewhat reduced by the damper member, but the vibration of the bracket supporting the drainage pump is still transmitted to the frame side of the washing machine through the fixing bolt. The effect was not satisfactory.
Korean Registered Patent Publication No. 10-0238970

  The present invention has been made to solve the above-described problems, and by improving the drainage pump mounting structure, the washing machine capable of improving the damping effect of vibration transmitted from the drainage pump to the external case side as compared with the prior art. The purpose is to provide.

  To achieve the above object, a washing machine according to the present invention fixes an outer case, a water tank installed in the outer case, a drain pump for draining the washing water of the water tank, and the drain pump. A fixing device, and the fixing device supports the outer surface of the anti-vibration member by supporting the outer surface of the anti-vibration member, a support member extending from the drainage pump, an anti-vibration member supporting the outer surface of the support member And a fixing member fixed to the inner surface of the case.

  The anti-vibration members are coupled to each other so as to support the opposite outer surfaces of the support member, and include a first anti-vibration member and a second anti-vibration member surrounding the outer surface of the support member. It is characterized by including.

  In addition, the first vibration isolation member and the second vibration isolation member include uneven portions respectively provided on surfaces that are coupled to face each other in order to enhance the binding force.

  Further, in order to reinforce the coupling force between the first and second vibration isolation members and the outer surface of the support member, the first and second vibration isolation members are formed with grooves, Protruding ribs are provided on the outer surface.

  The support member may be formed in a cross shape in cross section, and the first and second vibration isolation members may be formed with coupling grooves corresponding to the outer surface shape of the support member.

  In addition, the vibration-proof member includes a plurality of through holes.

  The fixing member may include a first fixing member and a second fixing member that surround the outer surfaces on both sides of the vibration isolation member.

  Further, the mutual coupling direction of the first and second vibration isolation members and the mutual coupling direction of the first and second fixing members intersect with each other.

  In addition, the first fixing member and the second fixing member include a locking protrusion and a locking groove for binding portions that are in contact with each other.

  The first and second fixing members include an insertion groove formed on an upper surface for inserting the support member therein, and the insertion groove is spaced apart from the support member. To do.

  The fixing device may further include a screw coupling portion provided on the fixing member for fixing the fixing member to an inner surface of the outer case, and a fixing screw fastened to the screw coupling portion. And

  The drain pump may be configured such that the remaining portion except the portion fixed by the fixing device is spaced apart from the outer case.

  The fixing device supports the outer surface of the vibration isolating member, the supporting member extending from the pump, the vibration isolating member supporting the outer surface of the supporting member, and is fixed to the inner surface of the outer case. And a fixing member.

  The washing machine according to the present invention has a structure in which the drainage pump is supported only by the support member, the support member is supported only by the vibration isolation member, and only the vibration isolation member is supported in a state where the fixing member is spaced apart from the support member. Therefore, the damping effect of vibration transmitted from the drainage pump to the outer case side is significantly improved as compared with the conventional case, and the operation noise of the washing machine can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is applicable to all of the pulsator-type washing machine and the drum-type washing machine. For convenience of explanation, only the drum-type washing machine will be described as an example.

  As shown in FIG. 1, a washing machine according to the present invention includes a drum-type water tank 11 installed in an outer case 10 for containing washing water, and a rotating drum 12 rotatably installed in the water tank 11. And a drive motor 13 installed at the lower part of the water tank 11 in order to rotate the rotating drum 12 inside the water tank 11. In addition, the washing machine is installed in the upper part of the water tank 11, a water supply device 14 for supplying washing water to the water tank 11, a detergent supply device 15 for supplying detergent in the water supply process, and a lower part of the water tank 11. And a drainage device 20 for forcibly discharging the washing water of the water tank 11 to the outside.

  An open portion is formed on the front surface of each of the outer case 10, the water tank 11, and the rotating drum 12 to put laundry into or out of the rotating drum 12. The open portion is formed on the front surface of the outer case 10. A door 16 for opening and closing is installed.

  The rotating drum 12 inside the aquarium 11 is not shown, but a rotating shaft coupled to the center of the back surface of the rotating drum 12 is rotatably supported at the center of the back surface of the aquarium 11 so that it can rotate inside the aquarium 11. Become. In addition, a pulley is coupled to a rotating shaft extending to the rear portion of the water tank 11, and this pulley and a pulley coupled to the rotating shaft of the drive motor 13 are coupled by a belt 17. Therefore, the rotating drum 12 is rotated by the rotation of the drive motor 13. The rotating drum 12 includes a plurality of through holes formed around the rotating drum 12 and a plurality of lifters 12a installed on the inner surface of the rotating drum 12 so that the laundry can be raised and dropped during rotation.

  The detergent supply device 15 includes a detergent case 15a installed on the front side of the outer case 10, and a detergent container 15b attached in a drawer shape so as to be inserted into the detergent case 15a from the front of the outer case 10. Including. Therefore, after the user pulls out the detergent container 15b forward, the user puts the detergent into the detergent container 15b.

  The water supply device 14 controls the water supply, the first water supply pipe 14b connecting the external water supply pipe 14a and the rear surface of the detergent case 15a, the second water supply pipe 14c connecting the detergent case 15a and the water tank 11, and the water supply. For this purpose, a water supply valve 14d installed on the inlet side of the first water supply pipe 14b is included. Therefore, when water is supplied by opening the water supply valve 14d, the supplied water is supplied to the water tank 11 via the detergent supply device 15, so that the detergent supplied to the detergent supply device 15 and the supplied water are supplied. Are supplied to the water tank 11 together.

  The drainage device 20 at the bottom of the aquarium 11 includes a drainage pump 30 for forcibly discharging the washing water of the aquarium 11 to the outside, a first drainage pipe 21 connecting the aquarium 11 and the drainage pump 30, and a drainage pump 30. And a second drain pipe 22 extending to the outside of the outer case 10.

  As shown in FIGS. 2 and 3, the drainage pump 30 includes a drainage casing 35 in which a filter case portion 31 that forms a filter chamber 32 and a pump case portion 33 that forms a pump chamber 34 are integrally formed. Yes. At this time, the filter chamber 32 and the pump chamber 34 define a mutually partitioned space. The drainage pump 30 is housed in the filter chamber 32, and filters 36 for filtering out foreign substances from the drained washing water, an impeller 37 that is rotatably installed in the pump chamber 34, and drives the impeller 37. And a motor 38 attached to one side of the pump case 33. The drainage pump 30 is fixed to the inner bottom surface 10 b of the outer case 10 by a fixing device 50.

  The filter casing 31 of the drain casing 35 is formed with an inlet 39 for allowing the wash water to be drained into the upper part on one side. The inlet 39 is connected to the first drain pipe 21 at the inlet 39. Is provided. In addition, an outlet 41 communicating with the inside of the pump chamber 34 is formed at the lower portion of the filter case portion 31 opposite to the inlet 39 so that the washing water inside the filter chamber 32 flows into the pump chamber 34.

  The filter case portion 31 is formed with an opening 31 a for attaching and detaching the filter 36 mounted in the filter chamber 32, and one end portion of the filter 36 is used for mounting the filter 36 in the filter chamber 32. A plug 42 to be used is provided, and this plug 42 is also used to close the opening 31 a of the filter chamber 32. That is, screw threads 42 a and 31 b that are fastened to each other are formed on the outer peripheral portion of the plug 42 and the inner surface of the opening 31 a of the filter case portion 31, and the plug 42 is rotatably coupled to one end of the filter 36. . Therefore, after the filter 36 is inserted into the filter chamber 32, the opening 31a of the filter case 31 can be closed by rotating and closing the stopper 42.

  Further, as shown in FIG. 4, the filter case portion 31 includes an opening 31 a and a plug 42 in the outer case so that the user can separate and clean the filter 36 from the outside of the outer case 10. It is exposed to the outside through 10 openings 10c. At this time, the opening 10 c of the outer case 10 for exposing the plug 42 is formed larger than the filter case portion 31, so that the filter case portion 31 and the outer case 10 are spaced apart. Therefore, even when vibration is generated by the operation of the drainage pump 30, this vibration is not transmitted to the outer case 10 side.

  As shown in FIG. 3, the pump case portion 33 forming the pump chamber 34 is opened on the side where the motor 38 is mounted, and this open portion is closed by mounting the motor 38. In addition, an outlet 43 is formed around the pump chamber 34 for discharging the washing water inside the impeller 37 when the impeller 37 is driven. The outlet 43 is connected to the second drain pipe 22. A tube 44 is provided.

  According to such a configuration of the drainage pump 30, the washing water flowing into the filter chamber 32 from the water tank 11 is filtered through the filter 36 inside the filter chamber 32, and then foreign substances are filtered. The impeller 37 that starts to flow and is rotated by the motor 38 discharges the washing water in the pump chamber 34 to the outlet 43 side of the pump chamber 34, thereby draining the washing water in the water tank 11 to the outside.

  The fixing device 50 that fixes the drain pump 30 to the bottom surface 10b of the outer case 10 surrounds a support member 51 that extends downward from the lower surface of the drain casing 35 by a predetermined length, and a lower outside of the support member 51. And the fixing members 54 and 55 fixed to the bottom surface 10b of the outer case 10 in a state of surrounding and supporting the outer surfaces of the anti-vibration members 52 and 53. Yes.

  The support member 51 is integrally formed with the drainage casing 35 by mold injection molding of a normal resin material, and faces downward from the lower surface of the drainage casing 35 corresponding to the center of gravity of the drainage pump 30 so as to stably support while reducing vibration. Extend to. Further, the support member 51 has sufficient rigidity to support the drainage pump 30 and has a cross-shaped cross section so that it is firmly coupled without swinging when coupled with the vibration isolation members 52 and 53. Formed.

  The anti-vibration member is made of an elastic rubber material, and includes a first anti-vibration member 52 and a second anti-vibration member 53 that are coupled to face each other so as to support the opposite outer surfaces of the support member 51. Yes. The first and second vibration isolation members 52 and 53 are provided with a width larger than the maximum width of the support member 51 so as to completely surround the lower outer surface of the support member 51 when they are combined. Concave and convex portions 52a and 53a for strengthening the coupling force are provided in the surrounding portions that are coupled to face each other. In addition, the first vibration isolation member 52 and the second vibration isolation member 53 have coupling grooves 52b corresponding to the outer surface shape of the support member 51 so as to closely support the outer surface of the support member 51 whose cross section has a cross shape. 53b is formed. Therefore, the support member 51 is stably supported by the first and second vibration isolation members 52 and 53.

  Further, in order to reinforce the binding force between the first and second vibration isolating members 52 and 53 and the lower outer surface of the support member 51, a protruding rib 51 a is provided on the outer surface of the supporting member 51. A groove 53d is formed on the inner surfaces of the coupling grooves 52b and 53b of the first and second vibration isolation members 52 and 53 so as to be coupled to 51a. The first and second vibration isolation members 52 and 53 include a plurality of through holes 52c and 53c for increasing the damping effect of vibration transmitted to the support member 51. Therefore, the vibration damping effect of the vibration isolation members 52 and 53 is increased.

  The fixing member includes a first fixing member 54 and a second fixing member 55 that support the outer surfaces on both sides of the first and second vibration isolation members 52, 53, respectively. That is, the first and second fixing members 54 and 55 are provided from both sides of the first and second vibration isolation members 52 and 53 so as to support the four sides and the upper surface of the first and second vibration isolation members 52 and 53. The first and second vibration isolation members 52 and 53 are tightly coupled to the outer surfaces. In addition, locking projections 54a and 55a and locking grooves 54b and 55b for binding the first and second fixing members 52 and 53 to each other are formed at portions where the first and second fixing members 52 and 53 are in contact with each other. The first and second fixing members 54 and 55 are fixed to the inner bottom surface 10b of the outer case 10 by fastening the fixing screw 56 to the screw coupling portions 54d, 54e, and 55d. At this time, the coupling direction of the first and second vibration isolation members 52 and 53 intersects with the coupling direction of the first and second fixing members 54 and 55, so that the first and second fixing members 54 and 55 are crossed. As a result, the binding of the first and second vibration isolating members 52 and 53 becomes more firm.

  Further, the upper surface portion of the first fixing member 54 and the second fixing member 55 is spaced apart from the support member 51 so as to be insulated from the support member 51. That is, the insertion grooves 54 c and 55 c of the support member 51 formed on the upper surfaces of the first and second fixing members 54 and 55 are spaced apart from the support member 51. Therefore, the vibration transmitted from the drain pump 30 to the support member 51 is not transmitted to the first and second fixing members 54 and 55, and the vibration of the drain pump 30 is not transmitted to the outer case 10 side.

  When the drainage pump 30 is fixed by such a fixing device 50, the first and second vibration isolating members 52 and 53 are coupled to both lower sides of the support member 51, and the first and second vibration isolating members 52 and 53 are coupled. After the first and second fixing members 54 and 55 are joined and bound together in a direction intersecting with the direction, finally, the first and second fixing members 54 and 55 are fastened by fastening the fixing screw 56. Fixed to the bottom surface 10b.

  When the drainage pump 30 is installed as described above, all the parts of the drainage pump 30 except the part fixed by the fixing device 50 are spaced apart from the outer case 10, so the drainage pump 30 is connected to the outer case 10 side. The vibration transmitted to can be minimized. The drainage pump 30 has a fixing structure in which the support member 51 and the first and second fixing members 54 and 55 are spaced apart from each other via the vibration isolating members 52 and 53. And since it is supported only by the 2nd vibration isolator 52,53, the vibration of the drainage pump 30 transmitted to the support member 51 is damped. Therefore, by minimizing the vibration of the outer case 10 due to the vibration of the drainage pump 30, the operation noise of the washing machine is reduced.

It is a perspective view which shows the structure of the washing machine by this invention. It is a disassembled perspective view which shows the structure of the fixing device for fixing the drainage pump and drainage pump of the washing machine by this invention. It is sectional drawing cut | disconnected by the III-III 'line | wire of FIG. It is a perspective view which shows the installation structure of the filter case part of the drainage pump by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 External case 10b Bottom surface 10c Opening 11 Water tank 12 Rotating drum 12a Lifter 13 Drive motor 14 Water supply device 14a External water supply pipe 14b First water supply pipe 14c Second water supply pipe 14d Water supply valve 15 Detergent supply device 15a Detergent case 15b Detergent container 16 Door 17 Belt 20 Drainage device 21 1st drainage pipe 22 2nd drainage pipe 30 Drainage pump 31 Filter case part 31a Opening 31b Thread 32 Filter room 33 Pump case room 34 Pump room 35 Drainage casing 36 Filter 37 Impeller 38 Motor 39 Inlet 40 Inlet pipe 41 outlet 42 plug 42a screw thread 43 outlet 44 outlet pipe 50 fixing device 51 support member 51a protruding rib 52 vibration isolating member 52a, 53a uneven portion 52b, 53b coupling groove 53 vibration isolating member 52c, 53c Through hole 54 First fixing member 54a, 55a Locking protrusion 54b, 55b Locking groove 54c, 55c Insertion groove 54d, 54e, 55d Screw coupling portion 55 Second fixing member 56 Fixing screw

Claims (27)

A washing machine comprising an outer case, a water tank installed in the outer case, a drainage pump for draining the washing water of the water tank, and a fixing device for fixing the drainage pump,
The fixing device is
A support member extending from the drainage pump;
A vibration isolating member that supports an outer surface of the support member;
A washing machine comprising: a fixing member that supports an outer surface of the vibration isolation member and is fixed to an inner surface of the outer case.   The anti-vibration member includes a first anti-vibration member and a second anti-vibration member which are coupled to face each other so as to support the opposite outer surfaces of the support member and surround the outer surface of the support member. The washing machine according to claim 1, wherein:   The first vibration isolation member and the second vibration isolation member include concave and convex portions respectively provided on surfaces that are coupled to face each other in order to strengthen the binding force. Washing machine.   In order to reinforce the coupling force between the first and second vibration isolation members and the outer surface of the support member, grooves are formed in the first and second vibration isolation members, and the outer surface of the support member is formed. The washing machine according to claim 2, further comprising a protruding rib.   3. The support member according to claim 2, wherein a cross section of the support member is formed in a cross shape, and a coupling groove corresponding to an outer surface shape of the support member is formed in the first and second vibration isolation members. The washing machine described.   The washing machine according to claim 1, wherein the vibration isolating member includes a plurality of through holes.   The washing machine as set forth in claim 1, wherein the fixing member includes a first fixing member and a second fixing member that surround both outer surfaces of the vibration isolating member.   The washing machine according to claim 7, wherein the mutual coupling direction of the first and second vibration isolation members intersects with the mutual coupling direction of the first and second fixing members.   The washing machine according to claim 8, wherein the first fixing member and the second fixing member include a locking protrusion and a locking groove for binding a portion in contact with each other. The first and second fixing members include an insertion groove formed on an upper surface for inserting the support member into the inside.
The washing machine according to claim 7, wherein the insertion groove is spaced apart from the support member. The fixing device is
A screw coupling portion provided in the fixing member for fixing the fixing member to the inner surface of the outer case;
The washing machine according to claim 1, further comprising a fixing screw fastened to the screw coupling portion.   The washing machine according to claim 1, wherein the drain pump has a remaining portion except the portion fixed by the fixing device spaced apart from the outer case.   The washing machine according to claim 1, wherein the support member is integrally formed with the drainage pump by mold injection molding of a resin material.   The washing machine according to claim 1, wherein the vibration isolating member is made of an elastic rubber material. A support member extending from the drainage pump;
A vibration isolating member that supports an outer surface of the support member;
A fixing member that supports an outer surface of the vibration isolation member and is fixed to an inner surface of the outer case.   The anti-vibration member includes a first anti-vibration member and a second anti-vibration member which are coupled to face each other so as to support the opposite outer surfaces of the support member and surround the outer surface of the support member. The fixing device according to claim 15, characterized in that:   17. The first vibration isolation member and the second vibration isolation member include concave and convex portions respectively provided on surfaces that are coupled to face each other in order to reinforce a binding force. Fixing device.   In order to reinforce the coupling force between the first and second vibration isolation members and the outer surface of the support member, grooves are formed in the first and second vibration isolation members, and the outer surface of the support member is formed. The fixing device according to claim 16, wherein the protrusion is provided with a protruding rib.   The support member is formed in a cross shape in cross section, and the first and second vibration isolation members are formed with coupling grooves corresponding to the outer surface shape of the support member. The fixing device as described.   The fixing device according to claim 15, wherein the vibration isolating member includes a plurality of through holes.   The fixing device according to claim 15, wherein the fixing member includes a first fixing member and a second fixing member that respectively surround both outer surfaces of the vibration isolation member.   The fixing device according to claim 21, wherein the mutual coupling direction of the first and second vibration isolation members and the mutual coupling direction of the first and second fixing members intersect each other.   23. The fixing device according to claim 22, wherein the first fixing member and the second fixing member include a locking projection and a locking groove for bundling portions that are in contact with each other. The first and second fixing members include an insertion groove formed on an upper surface for inserting the support member into the inside.
The fixing device according to claim 21, wherein the insertion groove is spaced apart from the support member. The fixing device is
A screw coupling portion provided on the fixing member for fixing the fixing member;
The fixing device according to claim 15, further comprising a fixing screw fastened to the screw coupling portion.   The fixing device according to claim 15, wherein the supporting member is integrally formed with the drainage pump by mold injection molding of a resin material. The fixing device according to claim 15, wherein the vibration isolating member is made of an elastic rubber material.

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