KR20160046692A - Apparatus for rotating door - Google Patents

Apparatus for rotating door Download PDF

Info

Publication number
KR20160046692A
KR20160046692A KR1020140191161A KR20140191161A KR20160046692A KR 20160046692 A KR20160046692 A KR 20160046692A KR 1020140191161 A KR1020140191161 A KR 1020140191161A KR 20140191161 A KR20140191161 A KR 20140191161A KR 20160046692 A KR20160046692 A KR 20160046692A
Authority
KR
South Korea
Prior art keywords
space
shaft
cam
housing
coupled
Prior art date
Application number
KR1020140191161A
Other languages
Korean (ko)
Other versions
KR101643768B1 (en
Inventor
정길석
전병기
Original Assignee
에버시스 주식회사
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
Application filed by 에버시스 주식회사 filed Critical 에버시스 주식회사
Publication of KR20160046692A publication Critical patent/KR20160046692A/en
Application granted granted Critical
Publication of KR101643768B1 publication Critical patent/KR101643768B1/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
    • E05F1/04—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights for wings which lift during movement, operated by their own weight
    • E05F1/06—Mechanisms in the shape of hinges or pivots, operated by the weight of the wing
    • E05F1/061—Mechanisms in the shape of hinges or pivots, operated by the weight of the wing with cams or helical tracks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops

Landscapes

  • Fluid-Damping Devices (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door rotation device capable of maintaining an open / closed state of a door and changing the rotational speed of the door to enhance the feeling of use. A door rotation device according to an embodiment of the present invention includes a housing portion, a first shaft portion, a second shaft portion, and a gear portion. Here, the housing part has a first space, a second space separated from the first space, and a second space in which a viscous fluid is received inside. The first shaft portion is provided in the first space, and forms the center of rotation of the housing portion, and rotates independently of the housing portion. The second shaft portion is provided in the second space, and rotates independently of the housing portion, and is provided with a damping force by the viscous fluid. The gear portion has a first gear coupled to the first shaft portion and a second gear coupled to the second shaft portion and gear-engaged with the first gear to transmit rotational force to the second shaft portion.

Description

[0001] APPARATUS FOR ROTATING DOOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door rotation device, and more particularly, to a door rotation device capable of maintaining an open / closed state of a door and changing the rotational speed of the door to enhance the feeling of use.

Generally, a door closure is used to control the rotational force of a door, a lid, a lid, and the like so as to prevent a door or a lid from being suddenly closed.

The door closer includes a damper for providing a rotational force to rotate a door or a lid, and a damping force for preventing sudden rotation of a door or a cover .

The damper can be largely divided into an elastic member type using an elastic member such as a spring and a viscous fluid type using a viscous fluid to give a damping force.

A damper to which an elastic member system is applied is disclosed in Korean Patent Laid-Open Publication No. 1988-0014408. The damper includes a casing, a shaft rotatably inserted in the casing and having one end protruding therefrom, and a damper installed between the casing and the shaft, And an elastic member.

Such an elastic member type damper can not be employed when a damping force is required for damping force in both directions (clockwise and counterclockwise) only in one direction. Further, as the number of times of use increases, the elastic force of the elastic member is changed, so that the damping force can not be maintained constant.

On the other hand, Korean Patent Registration No. 0414520 is disclosed as a damper using a viscous fluid system. However, the conventional damper using the viscous fluid method has the following problems.

First, an oil damper using a conventional viscous fluid system needs to adjust a damping force in accordance with a rotational force for rotating an application object. However, the conventional damper has a problem that it is impossible to control the damping force.

In the conventional oil damper using the viscous fluid method, many parts are formed inside the housing in order to obtain a damping force due to the sealing and rotation of the viscous fluid, so that the structure is complicated and the assembling process is complicated, resulting in low productivity. In addition, due to such a complicated structure, the manufacturing cost is high, and the overall size of the oil damper becomes large, so that there are many restrictions to be applied to various fields.

Korean Patent Publication No. 1988-0014508 (December 24, 1988) Korean Patent Publication No. 0414520 (December 24, 2003)

SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention provides a door rotation device capable of maintaining an open / closed state of a door and changing the rotational speed of the door to enhance the feeling of use.

According to an aspect of the present invention, there is provided a vacuum cleaner comprising: a housing having a first space and a second space separated from the first space and having a second space in which a viscous fluid is received; A first shaft portion provided in the first space and forming a rotation center of the housing portion and rotating independently of the housing portion; A second shaft provided in the second space, the second shaft being rotatable independently of the housing and being provided with a damping force by the viscous fluid; And a gear portion having a first gear coupled to the first shaft portion and a second gear coupled to the second shaft portion and gearing with the first gear to transmit rotational force to the second shaft portion, to provide.

According to an embodiment of the present invention, the first shaft portion may extend outwardly of the housing portion, the first cam may be formed at the other end portion of the first shaft portion, and the first cam may be rotated independently of the housing portion A first shaft which is provided in the first space in the longitudinal direction of the housing part and has one end coupled to the rotation cam and the other end coupled to the first gear, A sliding cam that slides in a longitudinal direction of the first shaft and has a second cam corresponding to the first cam formed at one end thereof facing the first cam, and a second cam that is provided so as to surround the outside of the first shaft, The other end of the sliding cam abuts against the engaging portion formed in the first space and has an elastic member elastically supporting the sliding cam in the direction of the rotation cam.

According to an embodiment of the present invention, a sliding protrusion is formed on an outer surface of the sliding cam in a longitudinal direction of the first shaft at predetermined intervals along a circumferential direction, and the sliding protrusion is coupled to an inner surface of the first space A guide groove can be formed.

In one embodiment of the present invention, the first cam may have a plurality of first hill portions and a first bottom portion alternately formed along the circumferential direction.

In one embodiment of the present invention, the second cam may have a second valley portion and a second peak portion which are simultaneously engaged with the first peak portion and the first valley portion, respectively.

In one embodiment of the present invention, the second shaft portion is provided in the second space in the longitudinal direction of the housing portion, and one end portion thereof is coupled to a coupling groove formed in a bottom portion of the second space, A damper member coupled to the second shaft and rotating in conjunction with the second shaft to press the viscous fluid received in the second space, the damper member being coupled to the gear, And a stopper portion coupled to the other end of the two shafts to block the second space to prevent the viscous fluid from leaking.

In an embodiment of the present invention, the damper member may include a body coupled to the second shaft, a protrusion formed on one side of the body, an outer side surface of the body being formed to contact an inner surface of the second space, A pressing part for pressing the viscous fluid while rotating together with the two axes and a lid provided at one side of the pressing part to selectively seal the passage hole formed in the width direction of the pressing part.

In one embodiment of the present invention, one end of the lid is fixed to the pressing portion, and the lid can be bent to open the flow passage hole by the viscous fluid discharged through the flow passage hole.

According to an embodiment of the present invention, the second space may have a predetermined length along the circumferential direction of the second space, and an outer side surface of the second space may protrude from the body.

According to an embodiment of the present invention, a velocity adjusting groove having a predetermined length and width may be formed on the inner circumferential surface of the second space so as to face the tight fitting portion along the rotation direction of the second shaft.

In one embodiment of the present invention, the housing portion may have a first housing having the first space and the second space, and a second housing coupled to the first housing to have the gear portion inside.

According to an embodiment of the present invention, the rotational speed of the door can be adjusted for each rotation section using a damper member.

According to an embodiment of the present invention, since the lid of the damper member is formed only on one side of the pressing portion, the damping force by the viscous fluid is reduced when the door is rotated in the opening direction, thereby improving the user's convenience. Further, when the door is rotated in the closing direction, the damping force by the viscous fluid is increased, thereby preventing the door from being suddenly rotated, thereby improving safety.

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.

1 is a perspective view of a door rotation device according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating an internal configuration of a door rotation device according to an embodiment of the present invention.
3 is a cross-sectional view illustrating an internal configuration of a door rotation device according to an embodiment of the present invention.
4 is an exploded perspective view of a door rotation device according to an embodiment of the present invention.
5 is a perspective view of a second space and a second shaft portion of a door rotation device according to an embodiment of the present invention as viewed from below the housing portion.
6 is a perspective view illustrating a damper unit of a door rotation device according to an embodiment of the present invention.
7 is a plan view illustrating an operation example of a door rotation device according to an embodiment of the present invention.
8 is a front view illustrating an example of operation of a door rotation device according to an embodiment of the present invention.
9 is an exploded perspective view illustrating a state in which a door rotation device and a bracket are engaged according to an embodiment of the present invention.
10 is a perspective view illustrating a state in which a door rotation device according to an embodiment of the present invention is coupled to a refrigerator.

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.

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.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a door rotation device according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating an internal configuration of a door rotation device according to an embodiment of the present invention. FIG. 4 is an exploded perspective view illustrating a door rotation device according to an embodiment of the present invention. FIG. 5 is an exploded perspective view of a door rotation device according to an embodiment of the present invention. FIG. 6 is a perspective view illustrating a damper unit of a door rotation device according to an embodiment of the present invention. FIG. 6 is a perspective view illustrating a structure of a second space and a second shaft of the door rotation device.

1 to 6, a door rotation device 100 according to an embodiment of the present invention includes a housing part 200, a first shaft part 300, a second shaft part 500, and a gear part 600, . ≪ / RTI >

The housing part 200 may have a first space 211 and a second space 212 formed separately from the first space 211 and containing a viscous fluid therein. The first shaft portion 300 is provided in the first space 211 and forms the center of rotation of the housing portion 200 and can rotate independently of the housing portion 200.

The second shaft part 500 is provided in the second space 212 and can rotate independently of the housing part 200 and can be provided with a damping force by the viscous fluid. The gear portion 600 includes a first gear 610 coupled to the first shaft portion 300 and a second shaft portion 500 coupled to the second shaft portion 500 and gear- And a second gear 620 that transmits a rotational force to the second gear 620.

In detail, the housing part 200 may form the body of the door rotation device 100.

The housing part 200 may have a first housing 210 and a second housing 250. The first housing 210 may include a first space 211 and a second space 212, Lt; / RTI >

The first space 211 may be formed to open outward through both ends of the first housing 210. That is, the first space 211 may be formed through the first housing 210.

The second space 212 may be formed to open outward through one end of the first housing 210. That is, the second space 212 may be formed in the shape of a groove in the first housing 210. In addition, the viscous fluid can be accommodated in the second space 212. At this time, the viscous fluid may be oil.

The second housing 250 may be coupled to one side of the first housing 210 and may have an open shape. The second housing 250 may cover the gear portion 600 so that a gear portion 600 to be described later is provided on the inner side so that the gear portion 600 can be protected and the foreign material can be prevented from entering the second housing 250 .

The first shaft portion 300 may have a rotation cam 310, a first shaft 320, a sliding cam 330, and an elastic member 340.

First, the rotation cam 310 may have a rotating body 311 and an extension 312. The extended portion 312 may protrude to the outside of the first space 211 by forming one end of the rotating cam 310. The rotating body 311 forms the other end of the rotating cam 310, (Not shown).

The outer surface of the rotating body 311 may have a shape corresponding to the inner surface of the first space 211, for example, a cylindrical shape. The rotating body 311 may be coupled to rotate independently of the first housing 210.

The first cam 313 may be formed at one end of the rotating body 311. The first cam may have a plurality of first hill portions 314 and a first hill portion 315 alternately formed along the circumferential direction of the rotating body 311.

Here, each of the first hill portions 314 and each of the first hill portions 315 may be formed in the same shape, and two first hill portions 314 and first hill portions 315 may be formed, respectively . The first peak 314 and the first valley 315 may be symmetrical with respect to each other and the first peak 314 and the first valley 315 may be formed symmetrically with respect to the center of each of the first peak 314 and the first valley 315 . The lowest portion of the first valley 315 adjacent to the highest portion of the first hill 314 may have an angular interval of 90 degrees with respect to the center of the rotary cam 310.

The extension 312 may be formed integrally with the rotating body 311. The extension portion 312 may have a coupling surface 316 on its outer surface. The mating surface 316 may be formed flat on the bottom surface and may be coupled to the first mating hole 810 of the bracket 800. At this time, a washer 380 may be further coupled between the bracket 800 and the extension 312.

A first through hole 317 may be formed in the center of the rotation cam 310 in the axial direction.

The first shaft 320 may be provided in the first space 211 in the longitudinal direction of the first housing 210. One end of the first shaft 320 may be coupled to the first through hole 317 of the rotation cam 310. Thus, the first shaft 320 can be rotated integrally with the rotation cam 310.

A second through hole 331 may be formed in the center of the sliding cam 330 in the axial direction and the first shaft 320 may be inserted into the second through hole 331. The inner diameter of the second through hole 331 may be larger than the outer diameter of the first shaft 320 so that the sliding cam 330 can slide in the longitudinal direction of the first axis. In addition, the first shaft 320 can rotate independently of the sliding cam 330.

The sliding protrusions 332 may be formed on the outer surface of the sliding cam 330 in the longitudinal direction of the first shaft 320 at predetermined intervals along the circumferential direction. A guide groove 213 may be formed on the inner surface of the first space 211 to correspond to the sliding protrusion 332. The sliding protrusion 332 can be coupled to the guide groove 213 so that the sliding cam 330 can move in the first space 320 in the longitudinal direction of the first shaft 320. [ In addition, the sliding cam 330 can rotate in conjunction with the first housing 210.

The sliding cam 330 may be in close contact with the rotation cam 310. The sliding cam 330 may have one end opposed to the first cam 313 of the rotation cam 310 at a position corresponding to the first cam 313 The second cam 335 may be formed.

The second cam 335 has a second valley portion 336 and a second valley portion 337 which can be engaged with the first peak portion 314 and the first valley portion 315 of the first cam 313 at the same time, have. For this purpose, the second cam 335 may be formed to correspond to the shape of the first cam 313.

The elastic member 340 may be provided to surround the outer side of the first axis. For example, the elastic member 340 may be a coil spring. One end of the elastic member 340 is provided so as to abut the other end of the sliding cam 330 and the other end of the elastic member 340 may abut the engaging portion 214 formed in the first space 211. Accordingly, the elastic member 340 can elastically support the sliding cam 330 in the direction of the rotation cam 310.

The other end of the first shaft 320 may be extended to the outside of the first space 211 and the other end of the first shaft 320 may be connected to the third through hole 334 formed in the first gear 610. [ (Not shown). A first pin hole 321 may be formed in the other end of the first shaft 320 and a second pin hole 612 may be formed in the first gear 610. As the first engagement pin 650 is coupled to the second pin hole 612, the first gear 610 can rotate integrally with the first shaft 320. That is, the rotation cam 310, the first shaft 320, and the first gear 610 can rotate integrally.

When the first housing 210 is fixed and the rotation cam 310 rotates, the first cam 313 of the rotation cam 310 rotates to push the sliding cam 330. Here, the sliding cam 330 Is moved in the longitudinal direction of the first shaft 320 because the sliding protrusion 332 is coupled to the guide groove 213 and is not rotatable. When the rotating force applied to the rotating cam 310 is removed, the sliding cam 330 is moved in the direction of the rotating cam 310 by the elastic force of the elastic member 340, So that it can rotate in the opposite direction.

When the rotation cam 310 is fixed and the first housing 210 rotates, the sliding cam 330 rotates together with the first housing 210. Since the rotation cam 310 is in a fixed state, The sliding cam 330 is moved in the longitudinal direction of the first shaft 320. When the rotational force applied to the first housing 210 is removed, the sliding cam 330 is moved in the direction of the rotation cam 310 by the elastic force of the elastic member 340, Can rotate in the opposite direction.

The second shaft portion 500 may have a second shaft 510, a damper member 520, and a stopper portion 530.

The second shaft 510 may be provided in the second space 212 in the longitudinal direction of the first housing 210. Accordingly, the second axis 510 may be provided parallel to the first axis 320.

One end of the second shaft 510 may be coupled to the coupling groove 215 formed in the bottom of the second space 212. The coupling groove 215 may be formed to have an inner diameter larger than the outer diameter of the second shaft 510. The other end of the second shaft 510 may be coupled to the fourth through hole 621 formed in the second gear 620.

A third pin hole 511 may be formed at the other end of the second shaft 510 and a fourth pin hole 622 may be formed through the second gear 620. A third pin hole 511 and / As the second engagement pin 651 is coupled to the fourth pin hole 622, the second gear 620 can rotate integrally with the second shaft 510. That is, the second shaft 510 can rotate independently of the first housing 210.

The damper member 520 is coupled to the second shaft 510 and rotates in conjunction with the second shaft 510. The damper member 520 includes a body 521, a pressing portion 522, 523).

The body 521 may have a fifth through hole 524 formed in the axial direction and the second shaft 510 may be coupled to the fifth through hole 524 to rotate integrally with the second shaft 510 .

The pressing portion 522 may protrude from one side of the body 521. The pressing portion 522 may be formed to cross the second space 212 and the outer surface 525 of the pressing portion 522 may be formed to contact the inner surface of the second space 212 have. Therefore, the pressing portion 522 of the damper member 520, which rotates in conjunction with rotation of the second shaft 510, can press the viscous fluid accommodated in the second space 212. At this time, the pressing portion () can be provided with the pressing force, i.e., the damping force, applied in the direction opposite to the rotation of the pressing portion 522 by the pressurized viscous fluid.

A plurality of flow path holes 526 may be formed through the pressing portion 522 in the width direction of the pressing portion 522. The flow hole 526 can connect the second spaces 212 separated by the pressing portion 522 to each other. When the damper member 520 rotates, part of the viscous fluid received in the second space 212 and pressurized by the pressing portion 522 is moved through the flow passage hole 526 so that the pressure of the pressing portion 522 So that it can be discharged to the opposite side.

A lid 523 may be provided on one side of the pressing portion 522. A first engaging hole 527 may be formed on one side of the pressing portion 522 and a second engaging hole 528 may be formed on one end of the lid 523. The second engaging hole 528, The one end of the lid 523 can be fixedly coupled to one side of the pressing portion 522 as the fastening member 652 penetrating through the lid 523 is coupled to the first engaging hole 527. [

Further, the lid 523 may be formed to have a sufficient length and width such that the other end covers the flow passage hole 526. 6, two covers 523 are provided on one side of the pressing portion 522, and one end of the lid 523 located at one end of one side of the pressing portion 522 is pressed by the pressing member 522, The number of the lids 523 and the position at which the cover 523 is coupled to the pressing portion 522 can be variously modified.

The lid 523 may be made of a flexible material, for example, the lid 523 may be a metal plate. Since the cover 523 is in a state where one end is fixed to the pressing portion 522 and the other end is not fixed to the pressing portion 522, the lid 523 can be bent by an external force. As described above, since the lid 523 is provided to cover the flow passage hole 526, when the lid 523 is bent outward, the flow passage hole 526 can be opened.

When the door 523 is rotated in a direction in which the door 920 (see FIG. 10) to be described later is opened, the lid 523 is pushed by the viscous fluid that moves through the passage hole 526 and is discharged, . When the cover 523 is rotated in the direction in which the door 920 is closed, the lid 523 can be hermetically sealed to the one side of the pressing portion 522 by the viscous fluid to seal the flow hole 526 . That is, the lid 523 can selectively seal the flow path hole 526 in accordance with the rotation direction of the second shaft 510.

The stopper 530 may be coupled to the other end of the second shaft 510, specifically, between the second gear 620 and the damper member 520. A sixth through hole 531 may be formed in the center of the stopper portion 530 and the second shaft 510 may be inserted into the sixth through hole 531. The inner diameter of the sixth through hole 531 may be larger than the outer diameter of the second shaft 510 so that the stopper 530 is coupled to the first housing 210, (510) may be rotatable.

The cap 530 may have a first thread 532 on its outer surface and the first thread 532 may be threadably engaged with the second thread 216 formed on the inner surface of the second space 212. [ . The stopper portion 530 may be screwed into the second space 212 to block the second space 212.

A first groove 533 may be formed in the stopper portion 530 in the circumferential direction and a first sealing member 534 may be coupled to the first groove 533. The first sealing member 534 is in close contact with the inner surface of the second space 212 to prevent the viscous fluid stored in the second space 212 from leaking between the stopper 530 and the second space 212 . A plurality of first sealing members 534 and first grooves 533 may be provided.

A second groove 512 may be formed at a portion where the stopper 530 is coupled to the second shaft 510 and a second sealing member 513 may be coupled to the second groove 512 . The second sealing member 513 can be brought into close contact with the inner surface of the sixth through hole 531 of the stopper 530 so that the viscous fluid can be prevented from leaking through the sixth through hole 531 have.

On the other hand, the second space 212 may be formed with the tightly fitting portion 217 protruding. The adhered portion 217 may be formed to have a predetermined length along the circumferential direction of the second space 212. The outer surface 218 of the tight fitting portion 217 may be formed so as to be in contact with the body 521 of the damper member 520. That is, the outer surface 218 of the adhered portion 217 may be formed to have a curved surface corresponding to the outer diameter of the body 521 of the damper member 520. Accordingly, the movement of the viscous fluid through the space between the contact portion 217 and the body 521 of the damper member 520 can be restricted.

The pressing portion 522 of the damper member 520 can rotate in the space in which the adhered portion 217 is not formed in the second space 212 as the second shaft 510 rotates. The adhered portion 217 can reduce the volume of the second space 212 and thereby reduce the amount of viscous fluid received in the second space 212 and can be reduced by the viscous fluid being pressed by the rotating pressure portion 522 So that the pressing force can be transmitted to the pressing portion 522 more efficiently.

A speed adjusting groove 219 may be formed on the inner circumferential surface of the second space 212. The speed adjusting groove 219 may be formed to face the tight fitting portion 217 and the speed adjusting groove 219 may be formed along the rotating direction of the second shaft 510. The speed adjusting groove 219 may be formed to have a predetermined length and width. Since the speed adjusting groove 219 forms a space inside and thus also forms a space with the pressing portion 522 of the damper member 520, the viscous fluid can be moved through the speed adjusting groove 219 have.

As the space of the speed adjusting groove 219 is larger, a larger amount of viscous fluid can be moved, so that the rotational speed of the damper member 520 can be increased. Conversely, the smaller the space of the speed adjusting groove 219, the slower the rotational speed of the damper member 520 may be.

The rotating speed of the damper member 520 can be adjusted by the size of the speed adjusting groove 219, the size of the flow passage hole 526 formed through the pressing portion 522, and the magnitude of the elastic force of the lid 523.

Hereinafter, an operation example of the door rotation device will be described.

FIG. 7 is a plan view illustrating an operation example of the door rotation device according to an embodiment of the present invention, FIG. 8 is a front view illustrating an operation example of the door rotation device according to an embodiment of the present invention, and FIG. And FIG. 10 is a perspective view illustrating a state in which a door rotation device according to an embodiment of the present invention is coupled to a refrigerator. FIG. 10 is an exploded perspective view illustrating a door rotation device and a bracket engaged according to an embodiment of the present invention. Here, FIG. 7 mainly shows the operation of the second shaft part according to the rotation of the housing part 200, and FIG. 8 shows the operation of the first shaft part in each operation state of FIG.

The door rotation device 100 may be mounted on any article provided with the door, but for convenience, the door rotation device 100 is mounted on the refrigerator.

9 and 10, as the extension portion 312 of the rotation cam 310 is coupled to the first engagement hole 810 formed in the bracket 800, the door rotation device 100 is rotated And may be coupled to the bracket 800.

A second coupling hole 820 may be formed in the bracket 800 and a coupling member (not shown) coupled to the second coupling hole 820 may be coupled to the main body 910 of the refrigerator 900 The bracket 800 may be held in a fixed state to the main body 910 of the refrigerator 900.

Since the extended portion 312 of the rotation cam 310 is coupled to the first coupling hole 810 of the bracket 800 so as to be unable to rotate, the rotation cam 310, the first shaft 320, The first gear 610 is kept in a fixed state.

The housing part 200 may be coupled to the inside of the door 920, and may rotate in association with rotation of the door 920. At this time, the door 920 and the housing part 200 are rotated around the first axis 320 (see FIG. 2).

7 (a) and 8 (a), when the door 920 is closed with the main body 910, the first cam 313 of the rotation cam 310, The second cam 335 of the sliding cam 330 may be in a state in which the second cam 335 is engaged with the sliding cam 330 so as to be brought into close contact with each other.

When the door 920 is rotated to open the main body 910, the housing part 200 also rotates. 7 (b), when the housing part 200 rotates in one direction, the second shaft part 500 (see FIG. 4) rotates in association with the housing part 200, The second gear 620 coupled to the second shaft 610 is rotated about the first shaft 320.

As the second gear 620 rotates, the damper member 520 rotates about the second axis 510 because the second shaft 510 also rotates. That is, when the housing part 200 rotates about the first axis 320, the second axis part rotates around the first axis 320 and rotates about the second axis 510 .

In one embodiment of the present invention, the gear ratio of the first gear 610 and the second gear 620 may be one. That is, the first gear 610 and the second gear 620 may be the same. When the housing portion 200 is rotated by 45 degrees in one direction about the first axis 320, the second gear 620 is rotated at 45 degrees in one direction, and the second shaft 510 ), As shown in Fig. At this time, the pressing portion 522 of the damper member 520 may be located near the one end of the speed adjusting groove 219.

The viscous fluid accommodated in the front space in the rotational direction of the pressing portion 522 can be moved to the rear space in the rotational direction of the pressing portion 522 through the flow hole 526 while the damper member 520 rotates. At this time, since the lid 523 is bent by the viscous fluid discharged through the flow path hole 526 to open the flow path hole 526, the damper member 520 can be relatively easily rotated.

8 (b), the sliding cam 330 also rotates in one direction around the first axis 320. In addition, as shown in FIG. Since the rotation cam 310 and the first shaft 320 are in a fixed state, the sliding cam 330, which rotates in conjunction with the rotation of the housing part 200, rotates the second cam 335 in the first cam 313, and moves upward.

As described above, since the crests and valleys of the first cam 313 and the second cam 335 are formed at angular intervals of 90 degrees, respectively, the elastic member 340 is in a compressed state at this time. Therefore, when the external force for rotating the housing unit 200 is removed, that is, when the user releases his / her hand from the door 920, the elastic force of the elastic member 340 pushes the sliding cam 330, . Accordingly, the housing part 200 rotates in the opposite direction in one direction about the first axis 320, so that the door 920 is closed.

7 (c), when the housing part 200 rotates 90 degrees in the first direction (the door is closed), the second gear 620 rotates 180 degrees . At this time, the pressing portion 522 of the damper member 520 can rotate in a section where the speed adjusting groove 219 is formed. The viscous fluid accommodated in front of the pressing portion 522 in the rotational direction can be moved not only in the flow path hole 526 but also in the backward direction of the pressing portion 522 through the speed adjusting groove 219. [ As a result, the damper member 520 can be rotated more easily.

Further, as shown in FIG. 8 (c), the sliding cam 330 at this time is rotated 90 degrees from the initial state. Accordingly, when the housing part 200 is rotated in one direction, the sliding cam 330 is moved downward by the elastic force of the compressed elastic member 340 even if the external force is removed by the user, (200) can be rotated.

That is, if the user rotates the door 920 slightly in the closing direction at this point of time, the door 920 can be rotated and closed even if the user releases his / her hand from the door 920. Alternatively, if the user rotates the door 920 a little further in the direction of opening the door at the present time, the door 920 may be rotated until it is fully opened (rotated 180 degrees) even if the user releases his / her hand from the door 920 .

7D, when the housing unit 200 is rotated 135 degrees in the first direction in the initial state, the second gear 620 rotates 270 degrees. At this time, the pressing portion 522 of the damper member 520 may be positioned at the other end portion of the speed adjusting groove 219. That is, the speed adjusting groove 219 can be formed such that the pressing portion 522 is positioned within the range of the speed adjusting groove 219 when the housing portion 200 is rotated in the angular range of 45 to 135 degrees. Thereby, when the door 920 is in the range of 45 to 135 degrees, the user can rotate the door more easily. In addition, since the rotation speed of the door can be increased, a feeling of luxury can be provided.

The length of the speed adjusting groove 219 formed in the circumferential direction can be designed in various ways, so that the rotational speed of the door can be adjusted according to the opening angle of the door.

8 (d), since the sliding cam 330 is moved downward by the elastic force of the elastic member 340, even if the user releases his / her hand from the door 920, the door 920 It can be automatically rotated.

On the other hand, when the opened door 920 is closed, since the pressing portion 522 of the damper member 520 rotates in the opposite direction to the one direction, the viscous fluid in front of the pressing direction of the pressing portion 522 flows into the cover 523 are pushed so that the flow path hole 526 is sealed. Therefore, when the door 920 is rotated in the closing direction, the damping force due to the viscous fluid becomes large, so that rapid rotation of the door is prevented, thereby improving safety.

In addition, when the door 920 is rotated in the opening direction, the damping force due to the viscous fluid is reduced, so that the door 920 can be opened quickly, thereby improving user convenience.

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.

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.

100: Door rotation device
200: housing part
210: first housing
211: First space
212: the second space
219: Speed adjusting groove
300: first shaft portion
310: rotation cam
320: 1st axis
330: Sliding cam
340: elastic member
500: second shaft portion
510: 2nd axis
520: damper member
522:
523: Cover
526: Euro hole
530:
600: gear portion
610: First gear
620: Second gear
800: Bracket
900: Refrigerator
910:
920: Door

Claims (11)

A housing part having a first space, a housing part separated from the first space and having a second space in which a viscous fluid is received inside;
A first shaft portion provided in the first space and forming a rotation center of the housing portion and rotating independently of the housing portion;
A second shaft provided in the second space, the second shaft being rotatable independently of the housing and being provided with a damping force by the viscous fluid; And
And a gear portion having a first gear coupled to the first shaft portion and a second gear coupled to the second shaft portion and gear-engaged with the first gear to transmit a rotational force to the second shaft portion. The method according to claim 1,
The first shaft portion
A rotation cam which is formed to extend independently from the housing part and which has a first cam formed on the other end thereof located in the first space,
A first shaft provided in the first space in the longitudinal direction of the housing part, one end coupled to the rotation cam and the other end coupled to the first gear,
A sliding cam coupled to the first shaft and slidable in a longitudinal direction of the first shaft and having a second cam corresponding to the first cam at one end thereof opposed to the first cam,
And an elastic member which is provided so as to surround the first shaft and has one end abutting against the other end of the sliding cam and the other end abutting against the engaging portion formed in the first space and elastically supporting the sliding cam in the direction of the rotation cam Door rotation device. 3. The method of claim 2,
Wherein a sliding protrusion is formed in an outer surface of the sliding cam at a predetermined interval along a circumferential direction in a longitudinal direction of the first shaft and a guide groove is formed in an inner side surface of the first space to receive the sliding protrusion, Device. 3. The method of claim 2,
Wherein the first cam has a plurality of first crest portions and a first crest portion alternately formed along the circumferential direction. 5. The method of claim 4,
And the second cam has a second valley portion and a second peak portion which are simultaneously engaged with the first peak portion and the first valley portion, respectively. The method according to claim 1,
The second shaft portion
The second space is provided in the longitudinal direction of the housing portion, one end portion of the second space is coupled to a coupling groove formed in the bottom portion of the second space, and the other end portion is coupled to the second gear, Axis,
A damper member coupled to the second shaft and rotating with the second shaft to press the viscous fluid received in the second space,
And a stopper coupled to the other end of the second shaft to block the second space to prevent leakage of the viscous fluid. The method according to claim 6,
The damper member
A body coupled to the second shaft,
A pressing part formed to protrude from one side of the body and configured to contact an inner surface of the second space with an outer surface thereof and to press the viscous fluid while rotating together with the second shaft;
And a lid provided on one side surface of the pressing portion to selectively seal the passage hole formed in the width direction of the pressing portion. 8. The method of claim 7,
Wherein one end of the lid is fixed to the pressing portion and bent to open the passage hole by viscous fluid discharged through the passage hole. 8. The method of claim 7,
Wherein the second space has a predetermined length along a circumferential direction of the second space, and an outer side surface of the door is protruded and formed to be in contact with the body. 10. The method of claim 9,
And a speed adjusting groove having a predetermined length and width is formed on an inner circumferential surface of the second space so as to face the tightening portion along a rotating direction of the second shaft. The method according to claim 1,
Wherein the housing portion has a first housing having the first space and the second space, and a second housing coupled to the first housing to have the gear portion inside.
KR1020140191161A 2014-10-21 2014-12-26 Apparatus for rotating door KR101643768B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20140142939 2014-10-21
KR1020140142939 2014-10-21

Publications (2)

Publication Number Publication Date
KR20160046692A true KR20160046692A (en) 2016-04-29
KR101643768B1 KR101643768B1 (en) 2016-07-29

Family

ID=55761064

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140191161A KR101643768B1 (en) 2014-10-21 2014-12-26 Apparatus for rotating door

Country Status (2)

Country Link
KR (1) KR101643768B1 (en)
WO (1) WO2016064047A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102241983B1 (en) * 2019-10-16 2021-04-20 피에이치에이 주식회사 Damper type auto door closure device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111583483B (en) * 2020-05-22 2022-08-23 袁贵军 Intelligent access control system of unattended substation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880014508A (en) 1987-05-06 1988-12-24 가와까미 히로시 Cover structure of keyboard musical instrument
JPH06659Y2 (en) * 1988-02-23 1994-01-05 株式会社ニフコ Damper
KR100414520B1 (en) 2001-05-07 2004-01-07 세원정밀주식회사 Rotary type oil damper
KR20090112007A (en) * 2008-04-23 2009-10-28 주식회사 엠티엑스하이브리드 Hinge
KR20100006762A (en) * 2008-07-10 2010-01-21 주식회사 엠티엑스하이브리드 Hinge and door assembly using the same
KR101249742B1 (en) * 2011-12-07 2013-04-02 신병철 Hinge equipped with fluid pressure damper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100452459B1 (en) * 2001-12-31 2004-10-12 세원정밀주식회사 Rotary type oil damper
JP4477957B2 (en) * 2004-07-16 2010-06-09 株式会社ニフコ Pull-in locking mechanism at the stop position of the opening / closing body
KR100915101B1 (en) * 2009-01-19 2009-09-03 주식회사 에이오텍 Hinge with rotary damper
KR101343915B1 (en) * 2012-02-02 2013-12-20 동우정밀(주) A single hinge damping device for a door of electric home appliances

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880014508A (en) 1987-05-06 1988-12-24 가와까미 히로시 Cover structure of keyboard musical instrument
JPH06659Y2 (en) * 1988-02-23 1994-01-05 株式会社ニフコ Damper
KR100414520B1 (en) 2001-05-07 2004-01-07 세원정밀주식회사 Rotary type oil damper
KR20090112007A (en) * 2008-04-23 2009-10-28 주식회사 엠티엑스하이브리드 Hinge
KR20100006762A (en) * 2008-07-10 2010-01-21 주식회사 엠티엑스하이브리드 Hinge and door assembly using the same
KR101249742B1 (en) * 2011-12-07 2013-04-02 신병철 Hinge equipped with fluid pressure damper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102241983B1 (en) * 2019-10-16 2021-04-20 피에이치에이 주식회사 Damper type auto door closure device

Also Published As

Publication number Publication date
KR101643768B1 (en) 2016-07-29
WO2016064047A1 (en) 2016-04-28

Similar Documents

Publication Publication Date Title
KR100625920B1 (en) A damper and a door handle including the damper
EP2682637B1 (en) Rotary damper device and method for producing same
AU2017376532B2 (en) Refrigerator door body and refrigerator provided with same
US20140102840A1 (en) Rotary type damper
US11072958B2 (en) Damper hinge and western-style toilet using the same
KR101643768B1 (en) Apparatus for rotating door
EP2664818B1 (en) Damper device
KR20050018613A (en) Damper
WO2017204022A1 (en) Rotary damper
KR20090041348A (en) Damper
US9752349B2 (en) Handle for an appliance or furniture with a handle bar and one or two rotational devices
KR101345236B1 (en) Oil dampers for a toilet bowl
JP5341260B2 (en) Rotating damper
WO2012137778A1 (en) Damper
WO2008147020A1 (en) Rotation type oil damper
KR101527511B1 (en) Damper assembly and apparatus for rotating door having the same
KR20080082474A (en) Damper
JP6325387B2 (en) Door operation assist device
KR200266486Y1 (en) Hinge
JPH0719277A (en) Finite angular rotation damping device
KR100414520B1 (en) Rotary type oil damper
CN107911978A (en) Closed change torque rotary shaft and electronic equipment
KR100630228B1 (en) hinge for door of refrigerator
JP4249767B2 (en) Gas stopper
WO2012102148A1 (en) Damper

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant