KR19990084746A - Bearing housing coupling structure of direct type washing machine - Google Patents
Bearing housing coupling structure of direct type washing machine Download PDFInfo
- Publication number
- KR19990084746A KR19990084746A KR1019980016728A KR19980016728A KR19990084746A KR 19990084746 A KR19990084746 A KR 19990084746A KR 1019980016728 A KR1019980016728 A KR 1019980016728A KR 19980016728 A KR19980016728 A KR 19980016728A KR 19990084746 A KR19990084746 A KR 19990084746A
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- South Korea
- Prior art keywords
- bearing housing
- lower bearing
- washing machine
- stator
- motor
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
- D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/12—Casings; Tubs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
본발명은 직결식 세탁기에 관한 것으로 특히, 구동축의 하측 베어링을 지지하는 하측 베어링 하우징에 요입부와 돌출부를 형성시키고 상기 요입부에 형성되는 제1통공에 의해 하측 베어링 하우징을 상측베어링 하우징과 동시에 결합시킬 수 있도록 하는 동시에 상기 하측 베어링 하우징의 돌출부에 형성되는 제4나사공에는 모우터의 스테이터를 체결 고정시킬 수 있도록 함으로서 간편한 조립성과 조립시간의 단축효과 등을 얻을 수 있도록 안출된 것으로,The present invention relates to a direct type washing machine, and in particular, to form a recess and a protrusion in the lower bearing housing for supporting the lower bearing of the drive shaft, and simultaneously coupling the lower bearing housing with the upper bearing housing by a first hole formed in the recess. At the same time, the fourth screw hole formed in the protrusion of the lower bearing housing is designed to fasten and fix the stator of the motor, so that simple assembly and shortening of assembly time can be obtained.
세탁기의 세탁외조에 고정되어 구동축에 결합된 상측 베어링을 지지하는 상측 베어링 하우징과 모우터의 스테이터에 고정되어 구동축에 결합된 하측 베어링을 지지 하는 하측 베어링 하우징을 한 번의 조립공정으로 동시에 결합시킬 수 있도록 하기 위해 하측 베어링 하우징에 형성되는 다수개의 요입부와,The upper bearing housing fixed to the washing outer tub of the washing machine to support the upper bearing coupled to the drive shaft and the lower bearing housing fixed to the stator of the motor to support the lower bearing coupled to the drive shaft can be combined simultaneously in one assembly process. A plurality of recesses formed in the lower bearing housing to
상기의 하측 베어링 하우징으로 모우터의 스테이터를 결합하기 위하여 하측 베어링 하우징에 형성되는 다수개의 돌출부를 구비한 것을 특징으로 하는 직결식 세탁기의 베어링 하우징 결합구조를 제공한다.It provides a bearing housing coupling structure of the direct type washing machine characterized in that it has a plurality of protrusions formed in the lower bearing housing to couple the stator of the motor to the lower bearing housing.
Description
본발명은 직결식 세탁기에 관한 것으로 특히, 구동축의 하측 베어링을 지지하는 하측 베어링 하우징에 요입부와 돌출부를 형성시키고 상기 요입부에 형성되는 제1통공에 의해 하측 베어링 하우징을 상측베어링 하우징과 동시에 결합시킬 수 있도록 하는 동시에 상기 하측 베어링 하우징의 돌출부에 형성되는 제4나사공에는 모우터의 스테이터를 체결 고정시킬 수 있도록 함으로서 간편한 조립성과 조립시간의 단축효과 등을 얻을 수 있도록 된 직결식 세탁기의 베어링 하우징 결합구조에 관한 것이다.The present invention relates to a direct type washing machine, and in particular, to form a recess and a protrusion in the lower bearing housing for supporting the lower bearing of the drive shaft, and simultaneously coupling the lower bearing housing with the upper bearing housing by a first hole formed in the recess. In addition, the fourth screw hole formed in the protruding portion of the lower bearing housing can be fastened and fixed to the stator of the motor, so that the bearing housing of the direct-type washing machine can achieve simple assembly and shortening of the assembly time. It relates to a coupling structure.
종래 하측 베어링 하우징이 결합된 직결식 세탁기의 구성은 도1에 나타내었다.The configuration of a direct type washing machine combined with a conventional lower bearing housing is shown in FIG. 1.
즉, 상기의 구성은 모우터(7)의 로터(8)에 연결되어 구동되면서 세탁내조(3)를 회전시는 구동축(6)과,That is, the above configuration is connected to the rotor 8 of the motor 7 and driven while rotating the washing tub 3 and the drive shaft 6,
상기 구동축(6)의 원활한 회전을 위해 구동축(6)의 상,하측으로 결합되는 상,하측 베어링(10)(11)과,Upper and lower bearings 10 and 11 coupled to the upper and lower sides of the drive shaft 6 for smooth rotation of the drive shaft 6,
상기 상측 베어링(10)을 지지하기 위하여 세탁외조(2)에 결합된 상측 베어링 하우징(4)과,An upper bearing housing 4 coupled to the laundry outer tub 2 to support the upper bearing 10;
상기 하측 베어링(11)을 지지하는 동시에 모우터(7)의 스테이터(9)를 고정시키기 위해 상측 베어링 하우징(4)으로 결합되는 하측 베어링 하우징(5)을 구비한 구성 으로 되어 있다.The lower bearing housing 5 is coupled to the upper bearing housing 4 to support the lower bearing 11 and to fix the stator 9 of the motor 7.
상기와 같은 구성에 의해 상측 베어링 하우징(4)을 고정시키기 위해서는 상측 베어링 하우징(4)을 세탁기(1)의 세탁외조(2) 저면으로 밀착시킨 뒤 상측 베어링 하우징(4)의 제1결합공(13)과 세탁외조(2)의 제1나사공(12)으로 제1보울트(14)를 체결하여 고정시키고 상측 베어링 하우징(4)의 제3결합공(19)과 세탁외조(2)의 제3나사공(18)으로는 제3보울트(20)를 체결하여 고정시킨다.In order to fix the upper bearing housing 4 by the above configuration, the upper bearing housing 4 is brought into close contact with the bottom surface of the washing tub 2 of the washing machine 1, and then the first coupling hole of the upper bearing housing 4 is formed. 13) and the first bolt 14 of the washing outer tub (2) by fastening by fixing the first bolt (14) and the third coupling hole (19) of the upper bearing housing (4) The third bolt 20 is fastened by fixing the third bolt 20.
그리고, 상기 상측 베어링 하우징(4)의 저부에는 하측 베어링 하우징(5)을 밀착시킨 뒤 하측 베어링 하우징(5)의 통공(17)과 상측 베어링 하우징(4)의 제2 결합공(16)그리고 세탁외조(2)의 제2나사공(15)으로 제2보울트(21)를 체결하여 고정시키게 된다.The lower bearing housing 5 is in close contact with the bottom of the upper bearing housing 4, and then the through hole 17 of the lower bearing housing 5 and the second coupling hole 16 of the upper bearing housing 4 are washed. The second bolt 21 is fastened to the second screw hole 15 of the outer tub 2 to be fixed.
또한, 상기 하측 베어링 하우징(5)에 형성된 제4나사공(22)에는 모우터(7)의 스테이터(9)에 형성된 삽입공(22)을 일치시켜 제4보울트(24)에 의해 고정을 시키게 된다.In addition, the fourth screw hole 22 formed in the lower bearing housing 5 coincides with the insertion hole 22 formed in the stator 9 of the motor 7 to be fixed by the fourth bolt 24. do.
그러나, 상기의 상,하측 베어링 하우징(4)(5)을 결합하기 위해서는 항상 상측 베어링 하우징(4)을 먼저 결합한 뒤 하측 베어링 하우징(5)을 결합시켜야 함으로 2공정의 조립공정이 필요하게 된다.However, in order to combine the upper and lower bearing housings 4 and 5, the upper bearing housing 4 must be combined first, and then the lower bearing housing 5 must be combined, so that a two-step assembly process is required.
따라서, 상기 2개공정에 의한 조립에 의해 조립작업의 능률이 저하되었고 조립시간 등을 많이 허비하게 되는 등의 문제점을 가지고 있었다.Therefore, there is a problem in that the assembly operation by the two processes is reduced the efficiency of the assembly work and waste a lot of assembly time.
이러한 종래의 문제점 등을 해결 보완하기 위한 본발명의 목적은,The purpose of the present invention for solving and complementing such a conventional problem,
세탁외조의 저부로 결합되는 상측 베어링 하우징과 하측 베어링 하우징을 한공정 으로 간편하게 결합시킬 수 있도록 함으로서 조립시의 작업능률 향상과 조립시간등을 단축시킬 수 있도록 하는 목적을 제공한다.The upper bearing housing and the lower bearing housing, which are coupled to the bottom of the washing tank, can be easily combined in one step, thereby providing an object of improving work efficiency and shortening assembly time.
상기의 목적을 달성하기 위하여 본발명은,In order to achieve the above object, the present invention,
상측 베어링 하우징을 세탁외조로 체결 고정시키는 다수개의 보울트들이 하측 베어링 하우징을 통과하면서 체결되도록 하측 베어링 하우징에 제1통공이 형성된 다수개의 요입홈을 형성시키고 상기 하측 베어링 하우징에 형성되는 다수개의 돌출부에는 모우터의 스테이터를 고정시키는 제4보울트가 체결되도록 제4나사공을 형성시키면 본발명의 목적을 달성할 수 있게 된다.The plurality of bolts for fastening and fixing the upper bearing housing to the laundry outer tub are formed by forming a plurality of recessed grooves having a first through hole formed in the lower bearing housing so as to be fastened while passing through the lower bearing housing. Forming the fourth screw hole to fasten the fourth bolt for fixing the stator of the rotor can achieve the object of the present invention.
도1은 종래 세탁기에 결합되는 하측 베어링 하우징을 나타낸 단면도1 is a cross-sectional view showing a lower bearing housing coupled to a conventional washing machine
도2는 본발명 세탁기에 결합되는 하측 베어링 하우징을 나타낸 단면도Figure 2 is a cross-sectional view showing a lower bearing housing coupled to the present invention washing machine
도3은 본발명 하측 베어링 하우징과 상측 베어링 하우징의 분리사시도Figure 3 is an exploded perspective view of the lower bearing housing and the upper bearing housing of the present invention
<도면중 주요 부분에 대한 부호설명><Code Description of Main Parts of Drawing>
101-세탁기 102-세탁외조101-washing machine 102-washing tank
103-제1나사공 104-제2나사공103-Thread 1 104-Second thread
105-제3나사공 111-상측 베어링 하우징105-Threaded hole 111-Upside bearing housing
112-제1결합공 113-제2결합공112-first binding hole 113-second binding hole
114-제3결합공 115-상측 베어링114-3rd engagement hole 115-upper bearing
121-하측 베어링 하우징 122-요입부121 lower bearing housing 122 recess
123-돌출부 124-제1통공123-projection 124-first via
125-제2통공 126-제4나사공125-Second hole 126-Four thread
127-하측 베어링 131-모우터127-lower bearing 131-motor
133-스테이터 135-구동축133-stater 135-drive shaft
136-제1보울트 137-제2보울트136-first bolt 137-second bolt
138-제3보울트 139-제4보울트138-third bolt 139-fourth bolt
본발명의 구성을 도2와 도3에 의해 상세히 설명하기로 한다.The configuration of the present invention will be described in detail with reference to Figs.
세탁기(101)의 세탁외조(102)에 고정되어 구동축(135)에 결합된 상측 베어링(115)을 지지하는 상측 베어링 하우징(111)과 모우터(131)의 스테이터(133)에 고정되어 구동축(135)에 결합된 하측 베어링(127)을 지지하는 하측 베어링 하우징(121)을 한 번의 조립공정으로 동시에 결합시킬 수 있도록 하기 위해 하측 베어링 하우징(121)에 형성되는 다수개의 요입부(122)와,The driving shaft is fixed to the upper bearing housing 111 and the stator 133 of the motor 131 which are fixed to the washing outer tub 102 of the washing machine 101 to support the upper bearing 115 coupled to the driving shaft 135. A plurality of concave portions 122 formed in the lower bearing housing 121 in order to be able to simultaneously combine the lower bearing housing 121 supporting the lower bearing 127 coupled to 135 in one assembly process;
상기의 하측 베어링 하우징(121)으로 모우터(131)의 스테이터(133)를 결합하기 위하여 하측 베어링 하우징(121)에 형성되는 다수개의 돌출부(123)를 구비한 구성이다.The lower bearing housing 121 is configured to include a plurality of protrusions 123 formed in the lower bearing housing 121 to couple the stator 133 of the motor 131 to the lower bearing housing 121.
그리고, 상기 하측 베어링 하우징(111)의 요입부(122)에는 세탁외조(102)의 내측에 형성된 제1나사공(103)과 상측 베어링 하우징(111)의 내측에 형성된 제1결합공(112)으로 제1보울트(136)가 체결될 수 있도록 하기 위해 제1결합공(112)과 일치 되도록 요입부(122)에 형성되는 다수개의 제1통공(124)을 더 구비하였다.The first screw hole 103 formed inside the washing tub 102 and the first coupling hole 112 formed inside the upper bearing housing 111 are formed in the recess 122 of the lower bearing housing 111. In order to be fastened to the first bolt 136 was provided with a plurality of first through holes 124 formed in the concave portion 122 to match the first coupling hole 112.
또한, 상기 하측 베어링 하우징(121)의 돌출부(123)에는 모우터(131)의 스테이터(133)에 형성된 삽입공(134)으로 삽입되는 제4보울트(139)를 고정시키기 위하여 삽입공(134)과 일치되도록 돌출부(123)에 형성되는 다수개의 제4나사공(126)을 더 구비하였다.In addition, the insertion hole 134 to fix the fourth bolt 139 inserted into the insertion hole 134 formed in the stator 133 of the motor 131 to the protrusion 123 of the lower bearing housing 121. It was further provided with a plurality of fourth screw holes 126 formed in the protrusion 123 to match with.
이와같이된 본발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention as described above is as follows.
먼저, 세탁외조(102)로 구동축(135)을 결합하기 전에 구동축(135)의 상,하측부로 상,하측 베어링(115)(127)을 결합시킨다.First, the upper and lower bearings 115 and 127 are coupled to upper and lower portions of the driving shaft 135 before the driving shaft 135 is coupled to the washing tub 102.
그리고, 상기의 상측 베어링(115)의 외측부에는 상측 베어링 하우징(111)을 결합시키고 하측 베어링(127)의 외측부에는 하측베어링 하우징(121)을 동시에 결합시킨다.The upper bearing housing 111 is coupled to the outer side of the upper bearing 115, and the lower bearing housing 121 is coupled to the outer side of the lower bearing 127 at the same time.
또한, 상기와 같이 상,하측 베어링(115)(127)과 상,하측 베어링 하우징(111)(135)이 결합된 구동축(135)의 조립체를 비로소 세탁외조(102)에 결합시키게 된다.In addition, the assembly of the drive shaft 135 to which the upper and lower bearings 115 and 127 and the upper and lower bearing housings 111 and 135 are coupled as described above is coupled to the laundry outer tub 102.
즉, 상기의 상측 베어링 하우징(111)을 세탁외조(102)의 저면에 맞대은 다음 하측베어링 하우징(121)의 요입부(122)에 형성된 제1통공(124)과 상측 베어링 하우징(121)의 제1결합공(112)으로 제1보울트(136)를 삽입하여 세탁외조(102)의 제1나사공(103)에 체결시키면 상,하측 베어링 하우징(111)(127)을 동시에 고정시킬 수 있게 된다.That is, the upper bearing housing 111 is abutted on the bottom surface of the laundry outer tub 102 and then the first through hole 124 and the upper bearing housing 121 formed in the recessed portion 122 of the lower bearing housing 121. When the first bolt 136 is inserted into the first coupling hole 112 and fastened to the first screw hole 103 of the washing tub 102, the upper and lower bearing housings 111 and 127 can be fixed at the same time. .
그리고, 상기 하측베어링 하우징(121)의 플랜지에 형성된 제2통공(125)과 상측 베어링 하우징(121)의 제2결합공(113)으로 제2보울트(136)를 삽입하여 세탁외조(102)의 제2나사공(104)에 체결시킴으로서 상,하측 베어링 하우징(111)(127)을 보다 견고하게 고정시킬 수 있게 된다.In addition, the second bolt 136 is inserted into the second through hole 125 formed in the flange of the lower bearing housing 121 and the second coupling hole 113 of the upper bearing housing 121 to insert the second bolt 136 into the washing tub 102. By fastening to the second screw hole 104, the upper and lower bearing housings 111 and 127 can be more firmly fixed.
또한, 상기 상측 베어링 하우징(111)의 제3결합공(114)에는 제3보울트(138)를 결합하여 세탁외조(102)의 제3나사공(105)으로 체결 고정시키면 상,하측 베어링 하우징(111)(121)의 조립작업이 간편하게 완료된다.In addition, by coupling the third bolt 138 to the third coupling hole 114 of the upper bearing housing 111 to fasten and fix the third screw hole 105 of the washing tub 102, the upper and lower bearing housings ( The assembly work of 111) 121 is completed simply.
한편, 상기 하측 베어링 하우징(121)으로 결합된 구동축(135)에는 모우터(1310의 로터(132)가 고정되어지고 하측 베어링 하우징(121)의 돌출부(123)에는 모우터(131)의 스테이터(133)가 고정되어진다.Meanwhile, the rotor 132 of the motor 1310 is fixed to the drive shaft 135 coupled to the lower bearing housing 121, and the stator of the motor 131 is attached to the protrusion 123 of the lower bearing housing 121. 133 is fixed.
즉, 상기 스테이터(133)의 고정은 스테이터(133)에 형성된 삽입공(134)으로 제4보울트(139)를 삽입하여 하측 베어링 하우징(121)의 돌출부(123)에 형성된 제4나사공(126)으로 체결시키면 용이하게 스테이터(133)를 고정시킬 수 있게 된다.That is, the fixing of the stator 133 is the fourth screw hole 126 formed in the protrusion 123 of the lower bearing housing 121 by inserting the fourth bolt 139 into the insertion hole 134 formed in the stator 133. By fastening with), the stator 133 can be easily fixed.
그리고, 상기 하측 베어링 하우징(121)으로 돌출된 구동축(135)에는 로터(132)가 너트에 의해 고정되어지고 상기 구동축(135)의 상단부에는 세탁내조를 고정시킬수 있게 된다.In addition, the rotor 132 is fixed to the drive shaft 135 protruding to the lower bearing housing 121 by a nut, and the washing inner tank can be fixed to the upper end of the drive shaft 135.
이와같이된 본발명은 모우터(131)의 스테이터(133)에서 발생되는 자력에 의해 로터(132)가 회전되고 상기 로터(132)의 회전에 의해 구동축(135)이 회전되면서 세탁내조를 반전운동시키게 되므로 원활한 세탁작용을 얻을 수 있게 된다.The present invention as described above is the rotor 132 is rotated by the magnetic force generated in the stator 133 of the motor 131 and the drive shaft 135 is rotated by the rotation of the rotor 132 to reverse the washing tank. Therefore, a smooth washing operation can be obtained.
특히, 본발명 하측 베어링 하우징(121)에 형성되는 다수개의 요입부(122)와 돌출부(123)에 의해 상측 베어링 하우징(111)과 하측 베어링 하우징(121)을 세탁외조(102)에 동시 결합시킬 수 있게 되므로 효율적인 조립작업과 신속한 조립작업을 수행할수 있게 된다.In particular, the upper bearing housing 111 and the lower bearing housing 121 may be simultaneously coupled to the laundry outer tub 102 by the plurality of recesses 122 and the protrusions 123 formed in the lower bearing housing 121 of the present invention. As a result, efficient assembly work and quick assembly work can be performed.
이와같이된 본발명은, 상측 베어링 하우징을 세탁외조로 체결 고정시키는 다수개의 보울트들이 하측 베어링 하우징을 통과하면서 체결되도록 하측 베어링 하우징에 제1통공이 형성된 다수개의 요입홈을 형성시키고 상기 하측 베어링 하우징에 형성되는 다수개의 돌출부에는 모우터의 스테이터를 고정시키는 제4보울트가 체결되도록 제4나사공을 형성시킴으로서 세탁외조의 저부로 결합되는 상측 베어링 하우징과 하측 베어링 하우징을 한공정 으로 간편하게 결합시킬 수 있고 상,하측 베어링 하우징의 조립시 향상된 작업능률과 조립시간의 단축효과 등을 얻을수 있는 유용한 효과를 가진다.Thus, the present invention forms a plurality of recessed grooves having a first through hole formed in the lower bearing housing such that a plurality of bolts for fastening and fixing the upper bearing housing to the laundry outer tub are fastened while passing through the lower bearing housing and formed in the lower bearing housing. By forming a fourth screw hole to fasten the fourth bolt fixing the stator of the motor to the plurality of protrusions, the upper bearing housing and the lower bearing housing coupled to the bottom of the washing tub can be easily combined in one step. When assembling the lower bearing housing has a useful effect to obtain improved work efficiency and shortening the assembly time.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980016728A KR100487300B1 (en) | 1998-05-11 | 1998-05-11 | Structure for installing bearing housing in the drum type washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980016728A KR100487300B1 (en) | 1998-05-11 | 1998-05-11 | Structure for installing bearing housing in the drum type washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990084746A true KR19990084746A (en) | 1999-12-06 |
| KR100487300B1 KR100487300B1 (en) | 2005-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980016728A KR100487300B1 (en) | 1998-05-11 | 1998-05-11 | Structure for installing bearing housing in the drum type washing machine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100487300B1 (en) |
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1998
- 1998-05-11 KR KR1019980016728A patent/KR100487300B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR100487300B1 (en) | 2005-06-16 |
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