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WO2019117480A1 - Roller unit and home appliance including same - Google Patents

Roller unit and home appliance including same Download PDF

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Publication number
WO2019117480A1
WO2019117480A1 PCT/KR2018/013887 KR2018013887W WO2019117480A1 WO 2019117480 A1 WO2019117480 A1 WO 2019117480A1 KR 2018013887 W KR2018013887 W KR 2018013887W WO 2019117480 A1 WO2019117480 A1 WO 2019117480A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner ring
ball
wire
roller unit
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/013887
Other languages
French (fr)
Korean (ko)
Inventor
이두면
김덕회
임정규
최규혁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEGOS
Original Assignee
SEGOS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020180003356A external-priority patent/KR102060076B1/en
Application filed by SEGOS filed Critical SEGOS
Publication of WO2019117480A1 publication Critical patent/WO2019117480A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/50—Racks ; Baskets

Definitions

  • the present invention relates to a roller unit and a household electric appliance having the roller unit, and more particularly to a roller unit having a pair of detachable engagement portions forming an insertion space portion into which a vertical wire of a housing body is inserted, and a household appliance having the same.
  • a dishwasher is a device that automatically cleans dishes using electricity.
  • the dishwasher is configured to clean a dishwasher such as food wastes on the dishware by spraying a washing solution and washing water toward the dishwasher housed in the basket-type housing, and to dry the dishwasher after washing.
  • the dishwasher can automatically process a large amount of dishes as the dishwashing process is automatically performed.
  • a movable member for accommodating a tableware is provided with a movable member.
  • the user can store the accommodating body inside the body of the dishwasher, or can easily take out the accommodating body from which the dishwashing has been completed, to the outside.
  • the conventional moving member coupled to the housing body is not firmly coupled to the housing body, which causes a problem that the housing body is shaken when moved.
  • the conventional moving member coupled to the housing body is complicated in the detachment / attachment structure with the housing body, so that it is difficult to replace the movable member when the moving member is broken.
  • the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a roller unit having a pair of attaching / detaching / attaching / attaching / detaching / attaching / attaching /
  • an inner ring having an insertion hole into which a protrusion of a housing body is inserted;
  • An outer ring formed on an outer side of the inner ring and having a hollow through which the inner ring is inserted;
  • a ball bearing provided between the inner ring and the outer ring, the ball bearing being in rolling contact with the inner ring and the outer ring;
  • a detachable coupling portion formed as a pair and having an insertion space portion into which the vertical wire of the accommodating body is inserted, one end portion of which is coupled to the inner ring and the other end portion is coupled to a lower end wire of the accommodating body do.
  • the outer ring of the inner ring may be formed with a first annular groove in rolling contact with the ball bearing.
  • the outer ring includes: a body portion into which the inner ring is inserted; And a guide flange having an outer diameter larger than that of the body and connected to the body.
  • a second annular groove may be formed on the inner surface of the body portion to be in rolling contact with the ball bearing.
  • the ball bearing includes: a plurality of balls at predetermined intervals; And a ball support portion having a ball engagement space portion into which the ball is inserted.
  • the ball supporting portion includes: a retainer; And an escape prevention blade extending from the retainer and forming the ball engagement space portion together with the retainer.
  • the detachable coupling portion may include: a pair of leg supporting portions, one end of which is coupled to the inner ring; A reinforcing portion connecting the pair of spaced leg supports; And a grip portion which is engaged with the other end of the leg support portion and is detached from the lower end wire, wherein the spaced pair of leg supports form the insertion space portion, and the insertion space portion has a width corresponding to the vertical wire .
  • the leg support portion may be inclined upward from the inner ring toward the grip portion, and one end of the leg support portion may be formed to be wider than the other end portion.
  • the grip portion is formed with a fixing hole having a shape corresponding to the bottom wire, and the bottom wire can be inserted into the fixing hole through the opening space portion.
  • a pair of coupling guides connected to ends of the grip portion forming the opening space portion and guiding the bottom wire to the fixing holes are further provided, and the coupling guide is widened toward the outer side .
  • the fixing hole may further include a contact pad.
  • the ball support portion may further include a point contact protrusion.
  • One embodiment of the present invention provides a household appliance provided with a roller unit.
  • the roller unit is structured to be easily detachable from the accommodating body. Therefore, upon breakage of the roller unit, the user can easily replace the roller unit.
  • the roller unit is provided with the insertion space in which the vertical wire is inserted, so that the roller unit and the housing can be firmly engaged. Therefore, when the roller unit is moved, shaking can be prevented.
  • FIG. 1 is a perspective view showing a housing body having a roller unit according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view showing the main part of the accommodating body to which the roller unit according to the first embodiment of the present invention is coupled.
  • FIG. 3 is a schematic view illustrating a state in which a housing having the roller unit according to the first embodiment of the present invention is used in a household appliance.
  • FIG. 4 is a front view of the roller unit according to the first embodiment of the present invention.
  • FIG. 5 is an exploded perspective view of the roller unit according to the first embodiment of the present invention viewed from the front.
  • FIG. 6 is an exploded perspective view of the roller unit according to the first embodiment of the present invention viewed from the rear.
  • FIG. 7 is a sectional view taken along line I-I of Fig.
  • FIG. 8 is a cross-sectional view illustrating a grip portion according to a second embodiment of the present invention.
  • FIG. 9 is a sectional view showing a ball bearing according to a third embodiment of the present invention.
  • FIG. 1 is a perspective view showing a housing body having a roller unit according to a first embodiment of the present invention
  • FIG. 2 is a perspective view showing a main portion of a housing body coupled with the roller unit according to the first embodiment of the present invention
  • FIG. 3 is a schematic view illustrating a state in which a housing having the roller unit according to the first embodiment of the present invention is used in a household appliance.
  • the roller unit 1000 is detachable from the receptacle 2000.
  • the housing 2000 may be a housing 2000 provided in the household appliance 3000, and various receptors may be accommodated in the housing 2000.
  • the receptacle accommodated in the housing 2000 can be a dishware.
  • Such a housing 2000 may include, for example, a horizontal wire 2100 and a vertical wire 2200.
  • the vertical wire 2200 is formed in a vertical direction in a state where the housing 2000 is cut in a transverse section, and the longitudinal direction is horizontal Horizontal wire 2100.
  • the lower end of the vertical wire 2200 and the horizontal wire 2100 are connected to each other to form the bottom surface of the accommodating body 2000.
  • the horizontal wire 2100 and the vertical wire 2200 form a mesh, and form a receiving space for a receiver (tableware, etc.).
  • the roller unit 1000 is detachable from the housing 2000.
  • roller unit 1000 is combined with a vertical wire 2200 having a protrusion 2210 at one end of a plurality of vertical wires 2200.
  • the coupling relationship between the roller unit 1000 and the protruding portion 2210 will be described later in detail.
  • the housing 2000 is not necessarily limited to the above-mentioned form, but may be formed in various forms according to the type of the household appliance 3000.
  • the housing 2000 can be easily stored in the main body of the dishwasher and taken out to the outside.
  • FIG. 4 is a perspective view of the roller unit according to the first embodiment of the present invention viewed from the front
  • FIG. 5 is an exploded perspective view of the roller unit according to the first embodiment of the present invention
  • FIG. 7 is a cross-sectional view taken along the line II of FIG. 4.
  • FIG. 7 is a cross-sectional view taken along the line II of FIG. 4.
  • FIG. 7 is a sectional view of the roller unit according to the embodiment of FIG. , And a detailed description thereof will be omitted.
  • the roller unit 1000 may include an inner ring 100, an outer ring 200, a ball bearing 300, and a detachable coupling portion 400.
  • an insertion hole 101 is formed in the inner ring 100.
  • a protrusion 2210 formed in the housing 2000 can be inserted into the insertion hole 101.
  • the inner ring 100 can be supported and fixed to the housing 2000.
  • the outer ring 200 is provided on the outer side of the inner ring 100.
  • the outer ring 200 has a hollow 201 through which the inner ring 100 is inserted.
  • the outer ring 200 is rotatable around the inner ring 100 fixed to the housing 2000.
  • the outer ring 200 may be rotated about the inner ring 100 by a ball bearing 300 provided between the inner ring 100 and the outer ring 200.
  • the outer ring 200 may include a body 210 and a guide flange 220.
  • a hollow 201 is formed in the body 210 so that the inner ring 100 can be inserted through the body 210.
  • the guide flange 220 is connected to the body 210.
  • the guide flange 220 has a larger outer diameter than the body 210 and guides the moving direction of the roller unit 1000 moved along the rail 3100 (see FIG. 3).
  • the roller unit 1000 moves along the rail 3100 in a state where the body 210 is seated on an 'L' shaped rail 3100 provided in the electric appliance 3000.
  • the guide flange 220 is disposed at one side of the end of the rail 3100 to guide the moving direction of the roller rail 3100. That is, when the user moves the receptacle 2000 from the outside to the inside of the dishwasher, or moves the inside of the body of the dishwasher from the outside to the outside, the guide flange 220 moves the housing 2000 in a swinging And guides the moving direction of the roller unit 1000.
  • the ball bearing 300 is provided between the inner ring 100 and the outer ring 200.
  • the ball bearing 300 is in rolling contact with the inner ring 100 and the outer ring 200 so that the outer ring 200 can be rotated around the inner ring 100.
  • the ball bearing 300 may include a ball 310 and a ball support 320.
  • the ball 310 is in rolling contact with the inner ring 100 and the outer ring 200. At this time, the balls 310 may be provided in a plurality of predetermined intervals.
  • the ball support 320 supports the plurality of balls 310.
  • the ball support portion 320 is formed with a ball engagement space portion 323 into which the ball 310 is inserted. Therefore, the ball 310 inserted into the ball engagement space portion 323 can be prevented from being separated. At this time, the ball engagement space portion 323 has a shape corresponding to the ball 310.
  • the ball 310 supported by the ball support 320 includes a first annular groove 102 formed on the outer surface of the inner ring 100 and a second annular groove 211 formed on the inner surface of the body 210. [ And the rolling contact is made.
  • the first annular groove 102 and the second annular groove 211 have a shape corresponding to the spherical surface of the ball 310.
  • the first annular groove 102 and the second annular groove 211 form a shape corresponding to the spherical surface of the ball 310, 310).
  • the ball 310 can be prevented from being shaken during the rotation of the ball 310.
  • the outer ring 200 can be smoothly rotated.
  • the ball support 320 may include a retainer 321 and a release prevention blade 322.
  • the retainer 321 is formed in an outer shape of the ball supporting portion 320.
  • Such a retainer 321 is connected in the form of a ring and supports a plurality of balls 310 provided at predetermined intervals. That is, the retainer 321 is formed with a ball engagement space portion 323 to support the plurality of balls 310.
  • the release preventing vane 322 extends from the retainer 321 and forms a ball engagement space portion 323 together with the retainer 321.
  • the release preventing vanes 322 extend from the retainer 321 to form a pair of ball locking space portions 323.
  • the ball retaining portion 320 is provided with the release preventing vane 322 that forms the ball engagement space portion 323, thereby reducing the size of the retainer 321. Therefore, the manufacturing cost of the ball support 320 can be reduced.
  • the detent blade 322 supports the ball 310 together with the retainer 321 to prevent the ball 310 from being detached.
  • the detachable engagement portion 400 is detachably attached to the receptacle 2000.
  • One end of the detachable coupling part 400 is coupled to the inner ring 100 and the other end of the detachable coupling part 400 is coupled to the receiving body 2000 .
  • the detachable coupling part 400 can be detached from the lower end wire 2110 (see FIG. 1) disposed under the plurality of horizontal wires 2100 of the housing 2000.
  • the detachable engagement portion 400 may include a leg support portion 410, a reinforcement portion 420, and a grip portion 430.
  • leg supports 410 are spaced apart and form a pair of insertion spaces 411.
  • a vertical wire 2200 may be inserted into the insertion space 411. That is, when the detachable coupling portion 400 is coupled to the lower end wire 2110, the vertical wire 2200 is inserted into the insertion space portion 411.
  • the insertion space portion 411 is formed to have a width corresponding to the vertical wire 2200. That is, the spacing distance of the pair of leg supports 410 corresponds to the diameter of the vertical wire 2200.
  • the leg support 410 can be supported on the vertical wire 2200.
  • a part of the force applied to the leg support 410 may be distributed to the vertical wire 2200.
  • the detachable coupling part 400 can be firmly coupled to the housing body 2000 without any shaking.
  • leg support 410 One end of the leg support 410 is coupled to the inner ring 100 and the other end is coupled to the grip 430.
  • the leg support portion 410 is inclined upward from the inner ring 100 toward the grip portion 430. This is to minimize the occurrence of engagement between the roller unit 1000 and the housing 2000 when the gripper 430 and the lower wire 2110 are coupled to each other, thereby facilitating the user's desorption work.
  • the width W1 of one end of the leg support 410 is longer than the width W2 of the other end. This is for the purpose of enhancing the supporting force of the leg supporting portion 410. Thus, even if a pressing force equal to or more than a certain level is applied to the leg supporting portion 410, cracks, breakage, or other damage to the joint portion between the inner ring 100 and the leg supporting portion 410 can be prevented.
  • the spaced pair of leg supports 410 are connected to each other by the reinforcing portion 420. Therefore, the support force of the leg support portion 410 can be increased. Therefore, even if the receptacle 2000 has a receptacle having a predetermined weight or more, the roller unit 1000 can stably support the receptacle 2000.
  • the grip portion 430 is coupled to the other end of the leg support portion 410 and is detachable from the lower end wire 2110.
  • a fixing hole 431 having a shape corresponding to that of the lower wire 2110 is formed in the grip portion 430.
  • the fixing hole 431 is communicated with the opening space portion 432.
  • the opening space portion 432 is a space communicated with the fixing hole 431 and open to the outside.
  • the lower wire 2110 can be inserted into the fixing hole 431 through the opening space portion 432.
  • the distance of the opening space portion 432 is formed to be shorter than the diameter of the fixing hole 431 in the state where the gripper portion 430 is cut to the longitudinal section.
  • the grip portion 430 may further include a pair of coupling guides 433.
  • the coupling guide 433 is connected to the end of the grip portion 430 forming the opening space portion 432. At this time, the engaging guide 433 has a shape extending outward from the opening space portion 432.
  • the coupling guide 433 guides the lower end wire 2110 to the fixing hole 431 communicating with the opening space portion 432 when the grip portion 430 and the lower end wire 2110 are coupled.
  • the lower wire 2110 When the user joins the lower wire 2110 and the gripper 430, the lower wire 2110 is held by the gripper 430 in a state where the engaging positions of the fixing hole 431 and the lower wire 2110 are not exactly aligned with each other ). ≪ / RTI > In other words, when the user pushes the gripper 430 in a state where the lower end wire 2110 is positioned in the inner space of the wedged joining guide 433, the lower end wire 2110 moves along the engagement guide 433 And may be inserted into the fixing hole 431 after being moved to the space portion 432.
  • the grip portion 430 is provided with the engaging guide 433, the engaging operation of the grip portion 430 and the lower end wire 2110 can be simplified.
  • the roller unit 1000 may be used in various home appliances 3000 requiring movement of the housing 2000 such as a dishwasher, a dish dryer, a refrigerator, and a bread maker.
  • FIG. 8 is a cross-sectional view showing a gripper according to a second embodiment of the present invention.
  • the components denoted by the same reference numerals as in FIGS. 1 to 7 have the same functions. A description thereof will be omitted.
  • the gripper 430 ' may further include a contact pad 434.
  • the contact pads 434 may be provided in the fixing holes 431.
  • the contact pad 434 may be made of an elastic material such as rubber. Thus, when the grip portion 430 'and the lower end wire 2110 are coupled, slipping can be prevented. Therefore, the grip portion 430 'and the lower end wire 2110 can be firmly coupled.
  • the contact pads 434 may be provided in the fixing hole 431 as a whole or may be provided at regular intervals as shown in FIG. 8 (b) (434) may be provided in various shapes in the fixing hole (431).
  • FIG. 9 is a sectional view showing a ball bearing according to a third embodiment of the present invention.
  • the components denoted by the same reference numerals as those shown in FIGS. 1 to 7 have the same functions. A description thereof will be omitted.
  • the ball bearing 300 ' may further include a point contact protrusion 330.
  • the point contact protrusions 330 are provided on the ball supporting portion 320 forming the ball engagement space portion 323.
  • the point contact protrusion 330 is in point contact with the ball 310 inserted into the ball engagement space 323.
  • the ball supporting portion 320 is provided with the point contact protrusion 330, the contact area between the ball 310 and the ball supporting portion 320 can be minimized. Therefore, the ball bearing 300 'can rotate the outer ring 200 smoothly. Also, the noise generated during the rotation of the ball 310 can be minimized.
  • the ball supporting portion 320 may be provided on the ball supporting portion 320 according to the first embodiment as shown in FIG. 9A. Alternatively, as shown in FIG. 9B, It is also possible to form the ball support portion 320 in a shape that is not formed.

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  • Rolling Contact Bearings (AREA)

Abstract

An embodiment of the present invention provides a roller unit and a home appliance including same, the roller unit including: an inner ring in which an insertion hole into which a protruding portion of a storage body is inserted is formed; an outer ring having a hollow that the inner ring is inserted into and passes through, and provided on the outside of the inner ring; a ball bearing provided between the inner ring and the outer ring and in rolling contact with the inner ring and the outer ring; and a pair of detachable coupling parts forming an insertion space portion into which a vertical wire of the storage body is inserted and having one end coupled to the inner ring and the other end coupled to a lower end wire of the storage body.

Description

롤러 유닛 및 그를 갖는 가전제품Roller unit and appliances having same

본 발명은 롤러 유닛 및 그를 갖는 가전제품에 관한 것으로, 보다 상세하게는 수납체의 수직 와이어가 삽입되는 삽입 공간부를 형성하는 한 쌍의 탈착 결합부가 구비된 롤러 유닛 및 그를 갖는 가전제품에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller unit and a household electric appliance having the roller unit, and more particularly to a roller unit having a pair of detachable engagement portions forming an insertion space portion into which a vertical wire of a housing body is inserted, and a household appliance having the same.

식기 세척기(dishwasher)는 전기를 이용하여 자동으로 식기를 세척하는 기기이다.A dishwasher is a device that automatically cleans dishes using electricity.

이러한 식기 세척기는 바구니 형태의 수납체에 수납된 식기를 향해 세척액 및 세척수를 분사하여 식기에 묻어있는 음식물 찌꺼기와 같은 오물을 세척하고, 세척이 완료된 식기를 건조시키도록 이루어진다.The dishwasher is configured to clean a dishwasher such as food wastes on the dishware by spraying a washing solution and washing water toward the dishwasher housed in the basket-type housing, and to dry the dishwasher after washing.

이와 같이, 식기 세척기는 식기의 세척 및 건조 과정이 자동으로 이루어짐에 따라 대량의 설거지는 간편하게 처리될 수 있다.Thus, the dishwasher can automatically process a large amount of dishes as the dishwashing process is automatically performed.

일반적으로 식기를 수납하는 수납체에는 이동 부재가 구비된다. 이에, 사용자는 수납체를 식기 세척기의 본체 내부로 수납시키거나 식기 세척이 완료된 수납체를 외부로 간편하게 인출할 수 있다.In general, a movable member for accommodating a tableware is provided with a movable member. Thus, the user can store the accommodating body inside the body of the dishwasher, or can easily take out the accommodating body from which the dishwashing has been completed, to the outside.

그러나 수납체에 결합된 종래의 이동 부재는 수납체와의 결합이 견고하지 못하여 수납체의 이동시, 흔들림이 발생되는 문제가 있다.However, the conventional moving member coupled to the housing body is not firmly coupled to the housing body, which causes a problem that the housing body is shaken when moved.

또한, 수납체에 결합된 종래의 이동 부재는 수납체와의 탈착 구조가 복잡하여 이동 부재의 파손시 교체 작업에 어려움이 있다.In addition, the conventional moving member coupled to the housing body is complicated in the detachment / attachment structure with the housing body, so that it is difficult to replace the movable member when the moving member is broken.

상기와 같은 문제점을 해결하기 위한 본 발명의 기술적 과제는, 수납체의 수직 와이어가 삽입되는 삽입 공간부를 형성하는 한 쌍의 탈착 결합부가 구비된 롤러 유닛 및 그를 갖는 가전제품을 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a roller unit having a pair of attaching / detaching / attaching / attaching / detaching / attaching / attaching /

상기 기술적 과제를 달성하기 위하여, 본 발명의 일실시예는 수납체의 돌출부가 삽입되는 삽입홀이 형성된 이너링; 상기 이너링이 관통 삽입되는 중공이 형성되며, 상기 이너링의 외측에 구비되는 아우터링; 상기 이너링과 아우터링 사이에 구비되며, 상기 이너링과 아우터링에 구름 접촉되는 볼 베어링; 및 한 쌍을 이루며 상기 수납체의 수직 와이어가 삽입되는 삽입 공간부를 형성하되, 일단부는 상기 이너링에 결합되고, 타단부는 상기 수납체의 하단 와이어에 결합되는 탈착 결합부를 포함하는 롤러 유닛을 제공한다.According to an aspect of the present invention, there is provided an inner ring having an insertion hole into which a protrusion of a housing body is inserted; An outer ring formed on an outer side of the inner ring and having a hollow through which the inner ring is inserted; A ball bearing provided between the inner ring and the outer ring, the ball bearing being in rolling contact with the inner ring and the outer ring; And a detachable coupling portion formed as a pair and having an insertion space portion into which the vertical wire of the accommodating body is inserted, one end portion of which is coupled to the inner ring and the other end portion is coupled to a lower end wire of the accommodating body do.

본 발명의 일실시예에 있어서, 상기 이너링의 외측면에는 상기 볼 베어링과 구름 접촉되는 제1 환형홈이 형성될 수 있다.In one embodiment of the present invention, the outer ring of the inner ring may be formed with a first annular groove in rolling contact with the ball bearing.

본 발명의 일실시예에 있어서, 상기 아우터링은, 상기 이너링이 삽입되는 몸체부; 및 상기 몸체부보다 외경이 크며, 상기 몸체부와 연결되는 가이드 플랜지를 포함할 수 있다.In one embodiment of the present invention, the outer ring includes: a body portion into which the inner ring is inserted; And a guide flange having an outer diameter larger than that of the body and connected to the body.

본 발명의 일실시예에 있어서, 상기 몸체부의 내측면에는 상기 볼 베어링과 구름 접촉되는 제2 환형홈이 형성될 수 있다.According to an embodiment of the present invention, a second annular groove may be formed on the inner surface of the body portion to be in rolling contact with the ball bearing.

본 발명의 일실시예에 있어서, 상기 볼 베어링은, 미리 정해진 간격을 이루는 복수개의 볼; 및 상기 볼이 삽입되는 볼 체결 공간부가 형성된 볼 지지부를 포함할 수 있다.In one embodiment of the present invention, the ball bearing includes: a plurality of balls at predetermined intervals; And a ball support portion having a ball engagement space portion into which the ball is inserted.

본 발명의 일실시예에 있어서, 상기 볼 지지부는, 리테이너; 및 상기 리테이너로부터 연장되며, 상기 리테이너와 함께 상기 볼 체결 공간부를 형성하는 이탈 방지 날개를 포함할 수 있다.In one embodiment of the present invention, the ball supporting portion includes: a retainer; And an escape prevention blade extending from the retainer and forming the ball engagement space portion together with the retainer.

본 발명의 일실시예에 있어서, 상기 탈착 결합부는, 일단부는 상기 이너링에 결합되는 한 쌍의 다리 지지부; 이격된 한 쌍의 상기 다리 지지부를 연결하는 보강부; 및 상기 다리 지지부의 타단부와 결합되며 상기 하단 와이어와 탈착되는 파지부를 포함하며, 이격된 한 쌍의 상기 다리 지지부는 상기 삽입 공간부를 형성하되, 상기 삽입 공간부는 상기 수직 와이어와 대응되는 폭을 갖도록 이루어질 수 있다.According to an embodiment of the present invention, the detachable coupling portion may include: a pair of leg supporting portions, one end of which is coupled to the inner ring; A reinforcing portion connecting the pair of spaced leg supports; And a grip portion which is engaged with the other end of the leg support portion and is detached from the lower end wire, wherein the spaced pair of leg supports form the insertion space portion, and the insertion space portion has a width corresponding to the vertical wire .

본 발명의 일실시예에 있어서, 상기 다리 지지부는 상기 이너링으로부터 상기 파지부로 갈수록 상향으로 경사를 이루되, 상기 다리 지지부의 일단부는 타단부보다 너비가 길게 형성될 수 있다.According to an embodiment of the present invention, the leg support portion may be inclined upward from the inner ring toward the grip portion, and one end of the leg support portion may be formed to be wider than the other end portion.

본 발명의 일실시예에 있어서, 상기 파지부에는 상기 하단 와이어와 대응되는 형상의 고정홀이 형성되며, 상기 하단 와이어는 개구 공간부를 통해 상기 고정홀에 삽입 결합될 수 있다.In one embodiment of the present invention, the grip portion is formed with a fixing hole having a shape corresponding to the bottom wire, and the bottom wire can be inserted into the fixing hole through the opening space portion.

본 발명의 일실시예에 있어서, 상기 개구 공간부를 형성하는 상기 파지부의 단부와 연결되며 상기 하단 와이어를 상기 고정홀로 안내하는 한 쌍의 결합 가이드가 더 구비되되, 상기 결합 가이드는 외측으로 갈수록 벌어지도록 이루어질 수 있다.In one embodiment of the present invention, a pair of coupling guides connected to ends of the grip portion forming the opening space portion and guiding the bottom wire to the fixing holes are further provided, and the coupling guide is widened toward the outer side .

본 발명의 일실시예에 있어서, 상기 고정홀에는 밀착 패드가 더 구비될 수 있다.In one embodiment of the present invention, the fixing hole may further include a contact pad.

본 발명의 일실시예에 있어서, 상기 볼 지지부에는 점 접촉 돌기가 더 구비될 수 있다.In one embodiment of the present invention, the ball support portion may further include a point contact protrusion.

본 발명의 일실시예는 롤러 유닛이 구비된 가전제품을 제공한다.One embodiment of the present invention provides a household appliance provided with a roller unit.

상기에서 설명한 본 발명에 따른 롤러 유닛 및 그를 갖는 가전제품의 효과를 설명하면 다음과 같다.Effects of the roller unit and the household electric appliances having the roller unit according to the present invention described above will be described as follows.

본 발명에 따르면, 롤러 유닛은 수납체와의 탈착이 간편한 구조로 이루어진다. 따라서, 롤러 유닛의 파손시, 사용자는 롤러 유닛을 간편하게 교체할 수 있다.According to the present invention, the roller unit is structured to be easily detachable from the accommodating body. Therefore, upon breakage of the roller unit, the user can easily replace the roller unit.

본 발명에 따르면, 롤러 유닛에는 수직 와이어가 삽입되는 삽입 공간부가 형성되어 롤러 유닛과 수납체는 견고한 결합이 이루어질 수 있다. 따라서, 롤러 유닛의 이동시, 흔들림이 방지될 수 있다.According to the present invention, the roller unit is provided with the insertion space in which the vertical wire is inserted, so that the roller unit and the housing can be firmly engaged. Therefore, when the roller unit is moved, shaking can be prevented.

본 발명의 효과는 상기한 효과로 한정되는 것은 아니며, 본 발명의 상세한 설명 또는 특허청구범위에 기재된 발명의 구성으로부터 추론 가능한 모든 효과를 포함하는 것으로 이해되어야 한다.It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

도 1은 본 발명의 제1 실시예에 따른 롤러 유닛이 구비된 수납체를 보여주는 사시도이다.1 is a perspective view showing a housing body having a roller unit according to a first embodiment of the present invention.

도 2는 본 발명의 제1 실시예에 따른 롤러 유닛이 결합된 수납체의 요부를 보여주는 사시도이다.FIG. 2 is a perspective view showing the main part of the accommodating body to which the roller unit according to the first embodiment of the present invention is coupled.

도 3은 본 발명의 제1 실시예에 따른 롤러 유닛이 구비된 수납체가 가전제품에 사용된 개략적인 사용 상태도이다.FIG. 3 is a schematic view illustrating a state in which a housing having the roller unit according to the first embodiment of the present invention is used in a household appliance. FIG.

도 4는 본 발명의 제1 실시예에 따른 롤러 유닛을 정면에서 바라본 사시도이다.4 is a front view of the roller unit according to the first embodiment of the present invention.

도 5는 본 발명의 제1 실시예에 따른 롤러 유닛을 정면에서 바라본 분해 사시도이다.5 is an exploded perspective view of the roller unit according to the first embodiment of the present invention viewed from the front.

도 6은 본 발명의 제1 실시예에 따른 롤러 유닛을 배면에서 바라본 분해 사시도이다.6 is an exploded perspective view of the roller unit according to the first embodiment of the present invention viewed from the rear.

도 7은 도 4의 I-I 단면도이다.7 is a sectional view taken along line I-I of Fig.

도 8은 본 발명의 제2 실시예에 따른 파지부를 보여주는 단면도이다.8 is a cross-sectional view illustrating a grip portion according to a second embodiment of the present invention.

도 9는 본 발명의 제3 실시예에 따른 볼 베어링을 보여주는 단면도이다.9 is a sectional view showing a ball bearing according to a third embodiment of the present invention.

이하에서는 첨부한 도면을 참조하여 본 발명을 설명하기로 한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며, 따라서 여기에서 설명하는 실시예로 한정되는 것은 아니다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

명세서 전체에서, 어떤 부분이 다른 부분과 "연결"되어 있다고 할 때, 이는 "직접적으로 연결"되어 있는 경우뿐 아니라, 그 중간에 다른 부재를 사이에 두고 "간접적으로 연결"되어 있는 경우도 포함한다. 또한 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 구비할 수 있다는 것을 의미한다.Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

이하 첨부된 도면을 참고하여 본 발명의 실시예를 상세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 제1 실시예에 따른 롤러 유닛이 구비된 수납체를 보여주는 사시도이고, 도 2는 본 발명의 제1 실시예에 따른 롤러 유닛이 결합된 수납체의 요부를 보여주는 사시도이며, 도 3은 본 발명의 제1 실시예에 따른 롤러 유닛이 구비된 수납체가 가전제품에 사용된 개략적인 사용 상태도이다.FIG. 1 is a perspective view showing a housing body having a roller unit according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a main portion of a housing body coupled with the roller unit according to the first embodiment of the present invention, FIG. 3 is a schematic view illustrating a state in which a housing having the roller unit according to the first embodiment of the present invention is used in a household appliance. FIG.

도 1 내지 도 3에서 보는 바와 같이, 롤러 유닛(1000)은 수납체(2000)와 탈착 가능하도록 이루어진다.As shown in Figs. 1 to 3, the roller unit 1000 is detachable from the receptacle 2000.

여기서 수납체(2000)는 가전제품(3000) 내에 구비되는 수납체(2000) 일 수 있으며, 이러한 수납체(2000)에는 다양한 수용체가 수용될 수 있다. 예를 들어, 가전제품(3000)이 식기 세척기인 경우, 수납체(2000)에 수용되는 수용체는 식기가 될 수 있다.The housing 2000 may be a housing 2000 provided in the household appliance 3000, and various receptors may be accommodated in the housing 2000. For example, when the household appliance 3000 is a dishwasher, the receptacle accommodated in the housing 2000 can be a dishware.

본 발명에서는 가전제품(3000)이 식기 세척기인 경우를 일예로 설명하기로 한다.In the present invention, a case where the household appliance 3000 is a dishwasher will be described as an example.

이와 같은 수납체(2000)는 예를 들어, 수평 와이어(2100)와 수직 와이어(2200)를 포함할 수 있다. 여기서 수평 와이어(2100)와 수직 와이어(2200)를 정의하면, 수납체(2000)를 횡단면으로 절단한 상태에서, 길이 방향이 수직으로 이루어진 것이 수직 와이어(2200)이고, 길이 방향이 수평으로 이루어진 것이 수평 와이어(2100)이다.Such a housing 2000 may include, for example, a horizontal wire 2100 and a vertical wire 2200. When the horizontal wire 2100 and the vertical wire 2200 are defined here, the vertical wire 2200 is formed in a vertical direction in a state where the housing 2000 is cut in a transverse section, and the longitudinal direction is horizontal Horizontal wire 2100.

이러한 수납체(2000)는 수직 와이어(2200)의 하단부와 수평 와이어(2100)가 연결되며, 수납체(2000)의 바닥면을 형성하기도 한다.In this case 2000, the lower end of the vertical wire 2200 and the horizontal wire 2100 are connected to each other to form the bottom surface of the accommodating body 2000.

이와 같은 수평 와이어(2100)와 수직 와이어(2200)는 그물망 형태를 이루며, 수용체(식기 등)의 수납 공간을 형성하게 된다.The horizontal wire 2100 and the vertical wire 2200 form a mesh, and form a receiving space for a receiver (tableware, etc.).

그리고 롤러 유닛(1000)은 수납체(2000)와 탈착 가능하도록 이루어진다.The roller unit 1000 is detachable from the housing 2000.

여기서 롤러 유닛(1000)은 복수개의 수직 와이어(2200) 중 단부에 돌출부(2210)가 형성된 수직 와이어(2200)와 결합이 이루어진다. 이와 같은 롤러 유닛(1000)과 돌출부(2210)의 결합 관계는 후술하여 구체적으로 설명하기로 한다.Here, the roller unit 1000 is combined with a vertical wire 2200 having a protrusion 2210 at one end of a plurality of vertical wires 2200. The coupling relationship between the roller unit 1000 and the protruding portion 2210 will be described later in detail.

여기서 수납체(2000)는 반드시 상기 언급된 형태로만 한정되지 않으며, 가전제품(3000)의 종류에 따라 다양한 형태로 이루어질 수 있다.Here, the housing 2000 is not necessarily limited to the above-mentioned form, but may be formed in various forms according to the type of the household appliance 3000.

이와 같이, 수납체(2000)에는 롤러 유닛(1000)이 결합됨에 따라, 수납체(2000)는 식기 세척기의 본체 내부로의 수납 및 외부로의 인출이 간편하게 이루어질 수 있다.As described above, since the roller unit 1000 is coupled to the housing 2000, the housing 2000 can be easily stored in the main body of the dishwasher and taken out to the outside.

도 4는 본 발명의 제1 실시예에 따른 롤러 유닛을 정면에서 바라본 사시도이고, 도 5는 본 발명의 제1 실시예에 따른 롤러 유닛을 정면에서 바라본 분해 사시도이며, 도 6은 본 발명의 제1 실시예에 따른 롤러 유닛을 배면에서 바라본 분해 사시도이고, 도 7은 도 4의 I-I 단면도로, 도 1 내지 도 3에 도시된 도면부호와 동일한 도면부호에 의해 지칭되는 구성들은 동일한 기능을 가지는 것으로서, 그들 각각에 대한 상세한 설명은 생략하기로 한다.4 is a perspective view of the roller unit according to the first embodiment of the present invention viewed from the front, FIG. 5 is an exploded perspective view of the roller unit according to the first embodiment of the present invention, FIG. 7 is a cross-sectional view taken along the line II of FIG. 4. FIG. 7 is a cross-sectional view taken along the line II of FIG. 4. FIG. 7 is a sectional view of the roller unit according to the embodiment of FIG. , And a detailed description thereof will be omitted.

도 4 내지 도 7에서 보는 바와 같이, 롤러 유닛(1000)은 이너링(100), 아우터링(200), 볼 베어링(300) 및 탈착 결합부(400)를 포함할 수 있다.4 to 7, the roller unit 1000 may include an inner ring 100, an outer ring 200, a ball bearing 300, and a detachable coupling portion 400.

여기서 이너링(100)에는 삽입홀(101)이 형성된다.Here, an insertion hole 101 is formed in the inner ring 100.

이러한 삽입홀(101)에는 수납체(2000)에 형성된 돌출부(2210)가 삽입될 수 있다. 이렇게 이너링(100)의 삽입홀(101)에 돌출부(2210)가 삽입된 경우, 이너링(100)은 수납체(2000)에 지지 고정될 수 있다.A protrusion 2210 formed in the housing 2000 can be inserted into the insertion hole 101. When the protrusion 2210 is inserted into the insertion hole 101 of the inner ring 100, the inner ring 100 can be supported and fixed to the housing 2000.

한편, 아우터링(200)은 이너링(100)의 외측에 구비된다.On the other hand, the outer ring 200 is provided on the outer side of the inner ring 100.

이러한 아우터링(200)에는 이너링(100)이 관통 삽입되는 중공(201)이 형성된다.The outer ring 200 has a hollow 201 through which the inner ring 100 is inserted.

이와 같은 아우터링(200)은 수납체(2000)에 고정된 이너링(100)을 중심으로 회전 가능하도록 이루어진다. 여기서 아우터링(200)은 이너링(100)과 아우터링(200) 사이에 구비되는 볼 베어링(300)에 의해 이너링(100)을 중심으로 회전될 수 있다.The outer ring 200 is rotatable around the inner ring 100 fixed to the housing 2000. The outer ring 200 may be rotated about the inner ring 100 by a ball bearing 300 provided between the inner ring 100 and the outer ring 200.

이러한 아우터링(200)은 몸체부(210)와 가이드 플랜지(220)를 포함할 수 있다.The outer ring 200 may include a body 210 and a guide flange 220.

몸체부(210)에는 중공(201)이 형성되어, 이너링(100)은 몸체부(210)에 관통 삽입될 수 있다.A hollow 201 is formed in the body 210 so that the inner ring 100 can be inserted through the body 210.

그리고 가이드 플랜지(220)는 몸체부(210)와 연결 형성된다. 이러한 가이드 플랜지(220)는 몸체부(210)보다 외경이 더 크게 형성되어, 레일(3100, 도 3 참조)을 따라 이동되는 롤러 유닛(1000)의 이동 방향을 안내하게 된다.The guide flange 220 is connected to the body 210. The guide flange 220 has a larger outer diameter than the body 210 and guides the moving direction of the roller unit 1000 moved along the rail 3100 (see FIG. 3).

예를 들어, 롤러 유닛(1000)은 가전제품(3000)에 구비된 'L' 자 형상의 레일(3100) 상에 몸체부(210)가 안착된 상태에서 레일(3100)을 따라 이동하게 된다.For example, the roller unit 1000 moves along the rail 3100 in a state where the body 210 is seated on an 'L' shaped rail 3100 provided in the electric appliance 3000.

이때, 가이드 플랜지(220)는 레일(3100)의 단부 일측에 배치되어 롤러 레일(3100)의 이동 방향을 안내하게 된다. 즉, 사용자가 수납체(2000)를 외부로부터 식기 세척기의 본체 내부로 이동시키거나 식기 세척기의 본체 내부로부터 외부로 이동시킬 시, 가이드 플랜지(220)는 수납체(2000)의 흔들거림 및 이탈을 방지하며 롤러 유닛(1000)의 이동 방향을 안내하게 된다.At this time, the guide flange 220 is disposed at one side of the end of the rail 3100 to guide the moving direction of the roller rail 3100. That is, when the user moves the receptacle 2000 from the outside to the inside of the dishwasher, or moves the inside of the body of the dishwasher from the outside to the outside, the guide flange 220 moves the housing 2000 in a swinging And guides the moving direction of the roller unit 1000. [

한편, 볼 베어링(300)은 이너링(100)과 아우터링(200) 사이에 구비된다.Meanwhile, the ball bearing 300 is provided between the inner ring 100 and the outer ring 200.

이와 같은 볼 베어링(300)은 이너링(100)과 아우터링(200)에 구름 접촉되어, 아우터링(200)은 이너링(100)을 중심으로 회전될 수 있다.The ball bearing 300 is in rolling contact with the inner ring 100 and the outer ring 200 so that the outer ring 200 can be rotated around the inner ring 100.

이러한 볼 베어링(300)은 볼(310)과 볼 지지부(320)를 포함할 수 있다.The ball bearing 300 may include a ball 310 and a ball support 320.

여기서 볼(310)은 이너링(100)과 아우터링(200)에 구름 접촉된다. 이때, 볼(310)은 미리 정해진 간격을 이루며 복수개로 구비될 수 있다.Here, the ball 310 is in rolling contact with the inner ring 100 and the outer ring 200. At this time, the balls 310 may be provided in a plurality of predetermined intervals.

그리고 볼 지지부(320)는 복수개의 볼(310)을 지지하도록 이루어진다. 이러한 볼 지지부(320)에는 볼(310)이 삽입되는 볼 체결 공간부(323)가 형성된다. 따라서, 볼 체결 공간부(323)에 삽입된 볼(310)은 이탈이 방지될 수 있다. 이때, 볼 체결 공간부(323)는 볼(310)과 대응되는 형상을 이루게 된다.The ball support 320 supports the plurality of balls 310. The ball support portion 320 is formed with a ball engagement space portion 323 into which the ball 310 is inserted. Therefore, the ball 310 inserted into the ball engagement space portion 323 can be prevented from being separated. At this time, the ball engagement space portion 323 has a shape corresponding to the ball 310.

이와 같은 볼 지지부(320)에 지지되는 볼(310)은 이너링(100)의 외측면에 형성된 제1 환형홈(102)과 몸체부(210)의 내측면에 형성된 제2 환형홈(211)과 구름 접촉이 이루어진다. 이때, 제1 환형홈(102)과 제2 환형홈(211)은 볼(310)의 구면과 대응되는 형상되는 형상을 이루며, 볼(310)의 상부측 및 하부측을 수용한 상태로 볼(310)과 구름 접촉이 이루어진다. 이에, 볼(310)이 회전하는 과정에서 볼(310)의 흔들림이 방지될 수 있다. 따라서, 아우터링(200)은 부드럽게 회전될 수 있다.The ball 310 supported by the ball support 320 includes a first annular groove 102 formed on the outer surface of the inner ring 100 and a second annular groove 211 formed on the inner surface of the body 210. [ And the rolling contact is made. The first annular groove 102 and the second annular groove 211 have a shape corresponding to the spherical surface of the ball 310. The first annular groove 102 and the second annular groove 211 form a shape corresponding to the spherical surface of the ball 310, 310). Thus, the ball 310 can be prevented from being shaken during the rotation of the ball 310. Thus, the outer ring 200 can be smoothly rotated.

이러한 볼 지지부(320)는 리테이너(321)와 이탈 방지 날개(322)를 포함할 수 있다.The ball support 320 may include a retainer 321 and a release prevention blade 322.

여기서 리테이너(321)는 볼 지지부(320)의 외형으로 이룬다.Here, the retainer 321 is formed in an outer shape of the ball supporting portion 320.

이와 같은 리테이너(321)는 링의 형태로 연결 형성되며, 미리 정해진 간격으로 구비된 복수개의 볼(310)을 지지하게 된다. 즉, 리테이너(321)에는 볼 체결 공간부(323)가 형성되어 복수개의 볼(310)을 지지하게 된다.Such a retainer 321 is connected in the form of a ring and supports a plurality of balls 310 provided at predetermined intervals. That is, the retainer 321 is formed with a ball engagement space portion 323 to support the plurality of balls 310.

그리고 이탈 방지 날개(322)는 리테이너(321)로부터 연장되며, 리테이너(321)와 함께 볼 체결 공간부(323)를 형성하게 된다.The release preventing vane 322 extends from the retainer 321 and forms a ball engagement space portion 323 together with the retainer 321. [

이러한 이탈 방지 날개(322)는 리테이너(321)로부터 연장되되, 한 쌍을 이루며 볼 체결 공간부(323)를 형성하게 된다.The release preventing vanes 322 extend from the retainer 321 to form a pair of ball locking space portions 323.

이와 같이, 볼 지지부(320)에는 볼 체결 공간부(323)를 형성하는 이탈 방지 날개(322)가 구비됨에 따라 리테이너(321)의 크기를 줄일 수 있다. 따라서, 볼 지지부(320)의 제조 단가를 낮출 수 있다.As described above, the ball retaining portion 320 is provided with the release preventing vane 322 that forms the ball engagement space portion 323, thereby reducing the size of the retainer 321. Therefore, the manufacturing cost of the ball support 320 can be reduced.

이러한 이탈 방지 날개(322)는 리테이너(321)와 함께 볼(310)을 지지함과 동시에 볼(310)의 이탈을 방지하게 된다.The detent blade 322 supports the ball 310 together with the retainer 321 to prevent the ball 310 from being detached.

한편, 탈착 결합부(400)는 수납체(2000)와 탈착 가능하도록 이루어진다.On the other hand, the detachable engagement portion 400 is detachably attached to the receptacle 2000.

이러한 탈착 결합부(400)는 한 쌍을 이루되, 탈착 결합부(400)의 일단부는 이너링(100)에 결합되고, 탈착 결합부(400)의 타단부는 수납체(2000)에 결합된다. 이때, 탈착 결합부(400)는 수납체(2000)의 복수개의 수평 와이어(2100) 중 하부에 배치되는 하단 와이어(2110, 도 1 참조)와 탈착될 수 있다.One end of the detachable coupling part 400 is coupled to the inner ring 100 and the other end of the detachable coupling part 400 is coupled to the receiving body 2000 . At this time, the detachable coupling part 400 can be detached from the lower end wire 2110 (see FIG. 1) disposed under the plurality of horizontal wires 2100 of the housing 2000.

이와 같은 탈착 결합부(400)는 다리 지지부(410), 보강부(420) 및 파지부(430)를 포함할 수 있다.The detachable engagement portion 400 may include a leg support portion 410, a reinforcement portion 420, and a grip portion 430.

여기서 다리 지지부(410)는 이격된 상태로 한 쌍을 이루며, 삽입 공간부(411)를 형성한다. 이러한 삽입 공간부(411)에는 수직 와이어(2200)가 삽입될 수 있다. 즉, 탈착 결합부(400)가 하단 와이어(2110)에 결합 시, 삽입 공간부(411)에는 수직 와이어(2200)가 삽입된다.Here, the leg supports 410 are spaced apart and form a pair of insertion spaces 411. A vertical wire 2200 may be inserted into the insertion space 411. That is, when the detachable coupling portion 400 is coupled to the lower end wire 2110, the vertical wire 2200 is inserted into the insertion space portion 411.

이와 같은 삽입 공간부(411)는 수직 와이어(2200)와 대응되는 폭을 갖도록 이루어진다. 즉, 한 쌍을 이루는 다리 지지부(410)의 이격 거리는 수직 와이어(2200)의 직경과 대응되도록 이루어진다.The insertion space portion 411 is formed to have a width corresponding to the vertical wire 2200. That is, the spacing distance of the pair of leg supports 410 corresponds to the diameter of the vertical wire 2200.

따라서, 롤러 유닛(1000)이 레일(3100)을 따라 이동될 시, 다리 지지부(410)는 수직 와이어(2200)에 지지될 수 있다. 이와 같이, 다리 지지부(410)가 수직 와이어(2200)에 지지됨에 따라 다리 지지부(410)로 가해지는 힘의 일부는 수직 와이어(2200)로 힘의 분산이 이루어질 수도 있다.Thus, when the roller unit 1000 is moved along the rail 3100, the leg support 410 can be supported on the vertical wire 2200. [ As the leg support 410 is supported on the vertical wire 2200, a part of the force applied to the leg support 410 may be distributed to the vertical wire 2200.

이러한 다리 지지부(410)는 한 쌍을 이루며 삽입 공간부(411)를 형성함에 따라 탈착 결합부(400)는 수납체(2000)에 흔들림이 없이 견고히 결합될 수 있다.As the leg supports 410 are formed as a pair and the insertion space part 411 is formed, the detachable coupling part 400 can be firmly coupled to the housing body 2000 without any shaking.

이와 같은 다리 지지부(410)의 일단부는 이너링(100)에 결합되고, 타단부는 파지부(430)에 결합된다.One end of the leg support 410 is coupled to the inner ring 100 and the other end is coupled to the grip 430.

이러한 다리 지지부(410)는 이너링(100)으로부터 파지부(430)로 갈수록 상향 경사를 이루게 된다. 이는, 파지부(430)와 하단 와이어(2110)의 결합시, 롤러 유닛(1000)과 수납체(2000) 간에 걸림 발생을 최소화하여 사용자가 탈착 작업을 편리하게 하기 위함이다.The leg support portion 410 is inclined upward from the inner ring 100 toward the grip portion 430. This is to minimize the occurrence of engagement between the roller unit 1000 and the housing 2000 when the gripper 430 and the lower wire 2110 are coupled to each other, thereby facilitating the user's desorption work.

그리고 다리 지지부(410)의 일단부의 너비(W1)는 타단부의 너비(W2)보다 길게 형성된다. 이는, 다리 지지부(410)의 지지력을 향상시키기 위함이다. 이에, 일정 이상의 가압력이 다리 지지부(410)에 가해지더라도 이너링(100)과 다리 지지부(410)의 결합 부위에 크랙 및 끊어짐 등의 파손 발생이 방지될 수 있다.The width W1 of one end of the leg support 410 is longer than the width W2 of the other end. This is for the purpose of enhancing the supporting force of the leg supporting portion 410. Thus, even if a pressing force equal to or more than a certain level is applied to the leg supporting portion 410, cracks, breakage, or other damage to the joint portion between the inner ring 100 and the leg supporting portion 410 can be prevented.

더불어, 이격된 한 쌍의 다리 지지부(410)는 보강부(420)로 연결 형성된다. 이에, 다리 지지부(410)의 지지력은 높아질 수 있다. 따라서, 수납체(2000)에 일정 이상의 무게를 갖는 수용체가 수용되더라도 롤러 유닛(1000)은 수납체(2000)를 안정적으로 지지하게 된다.In addition, the spaced pair of leg supports 410 are connected to each other by the reinforcing portion 420. Therefore, the support force of the leg support portion 410 can be increased. Therefore, even if the receptacle 2000 has a receptacle having a predetermined weight or more, the roller unit 1000 can stably support the receptacle 2000.

한편, 파지부(430)는 다리 지지부(410)의 타단부에 결합되며, 하단 와이어(2110)와 탈착 가능하도록 이루어진다.Meanwhile, the grip portion 430 is coupled to the other end of the leg support portion 410 and is detachable from the lower end wire 2110.

이러한 파지부(430)에는 하단 와이어(2110)와 대응되는 형상의 고정홀(431)이 형성된다. 이와 같은 고정홀(431)은 개구 공간부(432)와 연통 형성된다.In the grip portion 430, a fixing hole 431 having a shape corresponding to that of the lower wire 2110 is formed. The fixing hole 431 is communicated with the opening space portion 432.

여기서 개구 공간부(432)는 고정홀(431)과 연통되되, 외부로 개방된 공간이다. 따라서, 하단 와이어(2110)가 고정홀(431)에 삽입될 시, 하단 와이어(2110)는 개구 공간부(432)를 통해 고정홀(431)로 삽입될 수 있다.Here, the opening space portion 432 is a space communicated with the fixing hole 431 and open to the outside. Thus, when the lower wire 2110 is inserted into the fixing hole 431, the lower wire 2110 can be inserted into the fixing hole 431 through the opening space portion 432.

이때, 파지부(430)를 종단면으로 절단한 상태에서, 개구 공간부(432)의 거리는 고정홀(431)의 직경보다 길이가 짧게 형성된다. 이에, 고정홀(431)로 하단 와이어(2110)가 삽입될 시, 파지부(430)는 일정의 탄성 변형이 이루어진 상태에서 하단 와이어(2110)와 결합될 수 있다.At this time, the distance of the opening space portion 432 is formed to be shorter than the diameter of the fixing hole 431 in the state where the gripper portion 430 is cut to the longitudinal section. Thus, when the lower end wire 2110 is inserted into the fixing hole 431, the grip portion 430 can be engaged with the lower end wire 2110 in a state where a certain elastic deformation is performed.

그리고 파지부(430)에는 한 쌍의 결합 가이드(433)가 더 구비될 수 있다.The grip portion 430 may further include a pair of coupling guides 433.

이러한 결합 가이드(433)는 개구 공간부(432)를 형성하는 파지부(430)의 단부와 연결된다. 이때, 결합 가이드(433)는 개구 공간부(432)로부터 외측으로 갈수록 벌어지는 형태를 이루게 된다.The coupling guide 433 is connected to the end of the grip portion 430 forming the opening space portion 432. At this time, the engaging guide 433 has a shape extending outward from the opening space portion 432.

이와 같은 결합 가이드(433)는 파지부(430)와 하단 와이어(2110)의 결합시, 하단 와이어(2110)를 개구 공간부(432)와 연통된 고정홀(431)로 안내하도록 이루어진다.The coupling guide 433 guides the lower end wire 2110 to the fixing hole 431 communicating with the opening space portion 432 when the grip portion 430 and the lower end wire 2110 are coupled.

따라서, 사용자가 하단 와이어(2110)와 파지부(430)를 결합할 시, 고정홀(431)과 하단 와이어(2110)의 결합 위치가 정확히 맞지 않은 상태에서도 하단 와이어(2110)는 파지부(430)에 결합될 수 있다. 다시 말해서, 벌어진 형태의 결합 가이드(433)의 내측 공간에 하단 와이어(2110)가 위치된 상태에서 사용자가 파지부(430)를 밀어 넣으면, 하단 와이어(2110)는 결합 가이드(433)를 따라 개구 공간부(432)로 이동된 후, 고정홀(431)에 삽입 결합될 수 있다.When the user joins the lower wire 2110 and the gripper 430, the lower wire 2110 is held by the gripper 430 in a state where the engaging positions of the fixing hole 431 and the lower wire 2110 are not exactly aligned with each other ). ≪ / RTI > In other words, when the user pushes the gripper 430 in a state where the lower end wire 2110 is positioned in the inner space of the wedged joining guide 433, the lower end wire 2110 moves along the engagement guide 433 And may be inserted into the fixing hole 431 after being moved to the space portion 432.

이와 같이, 파지부(430)에는 결합 가이드(433)가 구비됨에 따라 파지부(430)와 하단 와이어(2110)의 결합 작업은 간편하게 이루어질 수 있다.As described above, since the grip portion 430 is provided with the engaging guide 433, the engaging operation of the grip portion 430 and the lower end wire 2110 can be simplified.

이와 같은 롤러 유닛(1000)은 식기 세척기, 식기 건조기, 냉장고, 제빵기 등의 수납체(2000)의 이동이 필요한 다양한 가전제품(3000)에 사용될 수 있다.The roller unit 1000 may be used in various home appliances 3000 requiring movement of the housing 2000 such as a dishwasher, a dish dryer, a refrigerator, and a bread maker.

도 8은 본 발명의 제2 실시예에 따른 파지부를 보여주는 단면도로, 도 1 내지 도 7에 도시된 도면부호와 동일한 도면부호에 의해 지칭되는 구성들은 동일한 기능을 가지는 것으로서, 그들 각각에 대한 상세한 설명은 생략하기로 한다.FIG. 8 is a cross-sectional view showing a gripper according to a second embodiment of the present invention. The components denoted by the same reference numerals as in FIGS. 1 to 7 have the same functions. A description thereof will be omitted.

도 8에서 보는 바와 같이, 파지부(430')에는 밀착 패드(434)가 더 구비될 수 있다.As shown in FIG. 8, the gripper 430 'may further include a contact pad 434.

이러한 밀착 패드(434)는 고정홀(431)에 구비될 수 있다.The contact pads 434 may be provided in the fixing holes 431.

여기서 밀착 패드(434)는 고무와 같은 탄성 재질로 이루어질 수 있다. 이에, 파지부(430')와 하단 와이어(2110)와의 결합시, 미끄러짐이 방지될 수 있다. 따라서, 파지부(430')와 하단 와이어(2110)는 견고한 결합이 이루어질 수 있다.The contact pad 434 may be made of an elastic material such as rubber. Thus, when the grip portion 430 'and the lower end wire 2110 are coupled, slipping can be prevented. Therefore, the grip portion 430 'and the lower end wire 2110 can be firmly coupled.

이러한 밀착 패드(434)는 도 8의 (a)에서와 같이 고정홀(431)에 전체적으로 구비될 수도 있고, 도 8의 (b)에서와 같이 일정 간격을 이룬 형태로 구비될 수도 있는 등 밀착 패드(434)는 고정홀(431)에 다양한 형태로 구비될 수 있다.8 (a), the contact pads 434 may be provided in the fixing hole 431 as a whole or may be provided at regular intervals as shown in FIG. 8 (b) (434) may be provided in various shapes in the fixing hole (431).

도 9는 본 발명의 제3 실시예에 따른 볼 베어링을 보여주는 단면도로, 도 1 내지 도 7에 도시된 도면부호와 동일한 도면부호에 의해 지칭되는 구성들은 동일한 기능을 가지는 것으로서, 그들 각각에 대한 상세한 설명은 생략하기로 한다.FIG. 9 is a sectional view showing a ball bearing according to a third embodiment of the present invention. The components denoted by the same reference numerals as those shown in FIGS. 1 to 7 have the same functions. A description thereof will be omitted.

도 9에서 보는 바와 같이, 볼 베어링(300')에는 점 접촉 돌기(330)가 더 구비될 수 있다.As shown in FIG. 9, the ball bearing 300 'may further include a point contact protrusion 330.

이러한 점 접촉 돌기(330)는 볼 체결 공간부(323)를 형성하는 볼 지지부(320)에 구비된다. 이와 같은 점 접촉 돌기(330)는 볼 체결 공간부(323)에 삽입되는 볼(310)과 점 접촉되도록 이루어진다.The point contact protrusions 330 are provided on the ball supporting portion 320 forming the ball engagement space portion 323. The point contact protrusion 330 is in point contact with the ball 310 inserted into the ball engagement space 323.

이렇게 볼 지지부(320)에는 점 접촉 돌기(330)가 구비됨에 따라, 볼(310)과 볼 지지부(320)의 접촉 면적이 최소화될 수 있다. 따라서, 볼 베어링(300')은 아우터링(200)을 부드럽게 회전시킬 수 있다. 그리고 볼(310)이 회전되는 과정에서 발생될 수 있는 소음도 최소화될 수 있다.Since the ball supporting portion 320 is provided with the point contact protrusion 330, the contact area between the ball 310 and the ball supporting portion 320 can be minimized. Therefore, the ball bearing 300 'can rotate the outer ring 200 smoothly. Also, the noise generated during the rotation of the ball 310 can be minimized.

여기서 볼 지지부(320)는 도 9의 (a)에서와 같이 제1 실시예에 따른 볼 지지부(320)에 구비될 수도 있고, 도 9의 (b)에서와 같이 이탈 방지 날개(322)가 구비되지 않는 형태의 볼 지지부(320)에도 형성될 수도 있음은 물론이다.9B, the ball supporting portion 320 may be provided on the ball supporting portion 320 according to the first embodiment as shown in FIG. 9A. Alternatively, as shown in FIG. 9B, It is also possible to form the ball support portion 320 in a shape that is not formed.

다만, 이는 본 발명의 바람직한 일실시예에 불과할 뿐, 본 발명의 권리 범위가 이러한 실시예의 기재 범위에 의하여 제한되는 것은 아니다.It should be understood, however, that the scope of the present invention is not limited by the scope of the present invention.

전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성 요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성 요소들도 결합된 형태로 실시될 수 있다.It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

본 발명의 범위는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

Claims (13)

수납체의 돌출부가 삽입되는 삽입홀이 형성된 이너링;An inner ring having an insertion hole into which a protrusion of the housing body is inserted; 상기 이너링이 관통 삽입되는 중공이 형성되며, 상기 이너링의 외측에 구비되는 아우터링;An outer ring formed on an outer side of the inner ring and having a hollow through which the inner ring is inserted; 상기 이너링과 아우터링 사이에 구비되며, 상기 이너링과 아우터링에 구름 접촉되는 볼 베어링; 및A ball bearing provided between the inner ring and the outer ring, the ball bearing being in rolling contact with the inner ring and the outer ring; And 한 쌍을 이루며 상기 수납체의 수직 와이어가 삽입되는 삽입 공간부를 형성하되, 일단부는 상기 이너링에 결합되고, 타단부는 상기 수납체의 하단 와이어에 결합되는 탈착 결합부를 포함하는 롤러 유닛.And a detachable coupling portion which is formed as a pair and forms an insertion space portion into which the vertical wire of the housing body is inserted, the one end portion being coupled to the inner ring and the other end portion being coupled to a lower end wire of the accommodating body. 제1항에 있어서,The method according to claim 1, 상기 이너링의 외측면에는 상기 볼 베어링과 구름 접촉되는 제1 환형홈이 형성된 것을 특징으로 하는 롤러 유닛.Wherein the inner ring has a first annular groove formed on an outer surface thereof in a rolling contact with the ball bearing. 제1항에 있어서,The method according to claim 1, 상기 아우터링은,Wherein the outer ring comprises: 상기 이너링이 삽입되는 몸체부; 및A body portion into which the inner ring is inserted; And 상기 몸체부보다 외경이 크며, 상기 몸체부와 연결되는 가이드 플랜지를 포함하는 것을 특징으로 하는 롤러 유닛.And a guide flange having an outer diameter larger than that of the body portion and connected to the body portion. 제3항에 있어서,The method of claim 3, 상기 몸체부의 내측면에는 상기 볼 베어링과 구름 접촉되는 제2 환형홈이 형성된 것을 특징으로 하는 롤러 유닛.And a second annular groove in rolling contact with the ball bearing is formed on an inner surface of the body portion. 제1항에 있어서,The method according to claim 1, 상기 볼 베어링은,In the ball bearing, 미리 정해진 간격을 이루는 복수개의 볼; 및A plurality of balls at predetermined intervals; And 상기 볼이 삽입되는 볼 체결 공간부가 형성된 볼 지지부를 포함하는 것을 특징으로 하는 롤러 유닛.And a ball support portion formed with a ball engagement space portion into which the ball is inserted. 제5항에 있어서,6. The method of claim 5, 상기 볼 지지부는,The ball- 리테이너; 및Retainer; And 상기 리테이너로부터 연장되며, 상기 리테이너와 함께 상기 볼 체결 공간부를 형성하는 이탈 방지 날개를 포함하는 것을 특징으로 하는 롤러 유닛.And a separation preventing blade extending from the retainer and forming the ball fastening space with the retainer. 제1항에 있어서,The method according to claim 1, 상기 탈착 결합부는,The desorption- 일단부는 상기 이너링에 결합되는 한 쌍의 다리 지지부;A pair of leg supports coupled to the inner ring at one end; 이격된 한 쌍의 상기 다리 지지부를 연결하는 보강부; 및A reinforcing portion connecting the pair of spaced leg supports; And 상기 다리 지지부의 타단부와 결합되며 상기 하단 와이어와 탈착되는 파지부를 포함하며,And a grip portion which is engaged with the other end portion of the leg support portion and is detached from the lower end wire, 이격된 한 쌍의 상기 다리 지지부는 상기 삽입 공간부를 형성하되, 상기 삽입 공간부는 상기 수직 와이어와 대응되는 폭을 갖도록 이루어진 것을 특징으로 하는 롤러 유닛.Wherein the pair of spaced apart leg supporting portions form the insertion space portion, and the insertion space portion has a width corresponding to the vertical wire. 제7항에 있어서,8. The method of claim 7, 상기 다리 지지부는 상기 이너링으로부터 상기 파지부로 갈수록 상향으로 경사를 이루되, 상기 다리 지지부의 일단부는 타단부보다 너비가 길게 형성된 것을 특징으로 하는 롤러 유닛.Wherein the leg support portion is inclined upward from the inner ring toward the grip portion, and one end portion of the leg support portion is formed to be wider than the other end portion. 제7항에 있어서,8. The method of claim 7, 상기 파지부에는 상기 하단 와이어와 대응되는 형상의 고정홀이 형성되며, 상기 하단 와이어는 개구 공간부를 통해 상기 고정홀에 삽입 결합되는 것을 특징으로 하는 롤러 유닛.Wherein the grip portion is formed with a fixing hole having a shape corresponding to the bottom wire, and the bottom wire is inserted into the fixing hole through the opening space portion. 제9항에 있어서,10. The method of claim 9, 상기 개구 공간부를 형성하는 상기 파지부의 단부와 연결되며 상기 하단 와이어를 상기 고정홀로 안내하는 한 쌍의 결합 가이드가 더 구비되되, 상기 결합 가이드는 외측으로 갈수록 벌어지도록 이루어진 것을 특징으로 하는 롤러 유닛.Further comprising a pair of coupling guides connected to end portions of the grip portions forming the opening space portions and guiding the bottom wire to the fixing holes, wherein the coupling guides are flared outwardly. 제9항에 있어서,10. The method of claim 9, 상기 고정홀에는 밀착 패드가 더 구비되는 것을 특징으로 하는 롤러 유닛.Wherein the fixing hole is further provided with a contact pad. 제5항에 있어서,6. The method of claim 5, 상기 볼 지지부에는 점 접촉 돌기가 더 구비되는 것을 특징으로 하는 롤러 유닛.Wherein the ball supporting portion is further provided with a point contact projection. 제1항 내지 제12항 중 어느 한 항에 따른 롤러 유닛이 구비된 가전제품.A household appliance provided with the roller unit according to any one of claims 1 to 12.
PCT/KR2018/013887 2017-12-14 2018-11-20 Roller unit and home appliance including same Ceased WO2019117480A1 (en)

Applications Claiming Priority (4)

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KR20170172360 2017-12-14
KR10-2017-0172360 2017-12-14
KR10-2018-0003356 2018-01-10
KR1020180003356A KR102060076B1 (en) 2017-12-14 2018-01-10 Roller unit and home appliances having the same

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