KR20160077427A

KR20160077427A - One way rotation damper

Info

Publication number: KR20160077427A
Application number: KR1020140186894A
Authority: KR
Inventors: 이응석; 김기환; 이석용; 김도엽; 박민수; 이준석
Original assignee: 충북대학교 산학협력단
Priority date: 2014-12-23
Filing date: 2014-12-23
Publication date: 2016-07-04

Abstract

The present invention relates to a unidirectional rotary damper which can provide a greater resistance force when a door rotates in one direction than when it rotates in one direction, a housing having a fluid therein, and a housing rotatably coupled to the housing A stopper provided between the housing and the shaft to prevent the fluid from circulating; and a stopper provided between the housing and the shaft and rotatable with respect to the shaft, A first block having a first opening and a second block provided between the housing and the shaft and rotatable with respect to the shaft and having a second opening through which the fluid can flow; And a second block which is located between the first block and the second block, And a third block having a third opening through which the fluid can flow, the size of the first flow opening formed when the first opening and the third opening are adjacent to each other, Is smaller than the size of the second flow opening formed when the first flow opening is adjacent to the second flow opening.

Description

One way rotation damper

The present invention relates to a damper, and more particularly, to a one-way rotary damper.

The door of the hinged door is fixed to the window frame through the hinge. The hinge is used as a structure for opening and closing the door by artificial force, and for opening and closing the door smoothly.

Also, when opening and closing doors and windows of refrigerators, high-rise apartments, and doors and windows of offices, sudden opening or closing motion causes severe shocks to be applied to window frames, refrigerators and door frames. Especially when the apartment is high-rise and the atmospheric circulation by high-rise and high-rise building is blocked, a kind of chimney effect and rapid rising air currents and vortices are introduced into the room and the windows or doors are severely closed.

In the case of a refrigerator or a kimchi refrigerator, the size of the door increases as the size of the door is increased. As a result, the door is severely impacted by its own weight.

Also, even in the high-rise office, the window suddenly closes or opens suddenly due to the extreme external wind pressure received by the window. In severe cases, the glass breaks or the window frame is distorted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a one-way rotary damper capable of providing a greater resistance force when the door rotates in one direction, . However, these problems are exemplary and do not limit the scope of the present invention.

According to an aspect of the present invention, there is provided a method of controlling a fluid pressure in a fluid-filled internal combustion engine including a housing having a fluid therein, a shaft rotatably coupled to the housing, a stopper provided between the housing and the shaft to prevent the fluid from circulating, A first block provided between the housing and the shaft and rotatable with respect to the shaft, the first block having a first opening through which the fluid can flow, and a second block provided between the housing and the shaft, A second block coupled to the shaft and positioned between the first block and the second block, the first block having a second opening through which the fluid can flow, And a third block adjacent the second block and having a third opening through which the fluid may flow, wherein the first opening and the third opening The size of the first flow opening formed when adjacent is a small one-way rotary damper than the size of the second flow opening formed when the third opening and the second opening is provided adjacent.

A shaft rotatably coupled to the inside of the housing; a stopper provided between the housing and the shaft to prevent the fluid from circulating; and a stopper provided between the housing and the shaft A first block having a first opening through which the fluid can flow and a second block provided between the housing and the shaft and movable along the rotation direction of the shaft, A second block having a second opening through which the fluid can flow; and a second block positioned between the first block and the second block and adjacent to the first block or the second block according to the rotational direction of the shaft, And a third block rotatably coupled to the shaft and having a third opening through which the fluid can flow, wherein the third opening and the first Gyeopchyeojyeot sphere when the size of the cross section of the fluid passing through the third opening and the second opening and gyeopchyeojyeot a small, one-way rotary damper size of the cross section through which the fluid is.

And a connecting block connecting the first block and the second block.

The second opening may be greater than or equal to the first opening.

According to an embodiment of the present invention as described above, it is possible to realize a unidirectional rotational damper capable of providing a greater resistance force when the door rotates in one direction than when rotated in the other direction. Of course, the scope of the present invention is not limited by these effects.

1 is a schematic view illustrating a one-way hinge damper according to an embodiment of the present invention.
2 is an exploded perspective view schematically showing a one-way hinge damper according to an embodiment of the present invention.
FIGS. 3 and 4 are perspective views of a part of a one-way hinge damper according to an embodiment of the present invention, viewed from different angles.
5 is an application example of a one-way hinge damper according to an embodiment of the present invention.
6 and 7 are cross-sectional views schematically illustrating the operation of a one-way hinge damper according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

In the following embodiments, the unit angle is a value obtained by dividing 360 deg. By a predetermined angle with reference to the central axis of the shaft. For example, the unit angle may be 1 °. However, the present invention is not limited thereto.

FIG. 1 is a perspective view schematically showing a unidirectional rotary damper according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view schematically showing a unidirectional rotary damper according to an embodiment of the present invention. 3 and 4 are perspective views of the first block 10 to the third block 30 of the unidirectional rotational damper according to the embodiment of the present invention viewed from different directions.

The unidirectional rotational damper according to the present embodiment may include a housing 40, a shaft 50, a stopper 41, a first block 10, a second block 20, and a third block 30.

The housing 40 may be formed in a cylindrical shape having a hollow portion inside and forming the entire outer shape of the one-way rotary damper. For example, the housing 40 may include a cylindrical case opened at only one of the opposite ends, and a lid coupled to the open portion of the case. Of course, the shape of the housing 40 is not limited thereto, and the housing 40 may be formed in a polygonal shape as required.

And the housing 40 may contain fluid therein. Where the fluid can fill most of the interior space of the housing 40.

The shaft 50 may be rotatably coupled to the housing 40. For example, the shaft 50 may be rotatably coupled to the center of the cylindrical housing 40. In addition, the shaft 50 may extend to protrude out of the housing 40 to engage with the hinge 1.

The stopper 41 is provided between the housing 40 and the shaft 50 to prevent the fluid from circulating. Specifically, the stopper 41 may be provided from the inner wall of the housing 40 to the shaft 50. Therefore, the stopper 41 can prevent the fluid from circulating clockwise or counterclockwise with respect to the shaft 50. The stopper 41 may have a plate shape or a triangular block shape as shown. Of course, the shape of the stopper 41 is not limited thereto.

3 and 4, the first block 10 may be provided between the housing 40 and the shaft 50 so as to be rotatable with respect to the shaft 50. For example, the first block 10 may contact the inner wall of the housing 40 and contact the outer circumferential surface of the shaft 50. The first block 10 may rotate in the same direction as the rotation direction of the shaft 50 along the inner wall of the housing 40. For example, the first block 10 may be indirectly rotated by the shaft 50. A detailed description thereof will be described later.

And the first block 10 may include a first opening 11 through which the fluid provided in the housing 40 passes. Here, the first opening 11 passes through the first block 10 and can be disposed on the rotating direction of the shaft 50. Thus, the fluid may pass through the first opening 11 as the first block 10 rotates about the shaft 50.

The second block 20 may be provided between the housing 40 and the shaft 50 and may be rotatable with respect to the shaft 50. For example, the second block 20 may contact the inner wall of the housing 40 and contact the outer circumferential surface of the shaft 50. The second block 20 may rotate in the same direction as the rotation direction of the shaft 50 along the inner wall of the housing 40. For example, the second block 20 may be indirectly rotated by the shaft 50. A detailed description thereof will be described later.

And the second block 20 may include a second opening 21 through which the fluid provided in the housing 40 passes. Here, the second opening 21 passes through the second block 20 and can be disposed in the rotational direction of the shaft 50. Thus, the fluid may pass through the second opening 21 as the second block 20 rotates about the shaft 50.

At this time, the first block 10 and the second block 20 may be spaced apart. For example, the first block 10 and the second block 20 may form a predetermined angle with respect to the shaft 50. Here, the predetermined angle may be an acute angle.

On the other hand, the first block 10 and the second block 20 can rotate in the same direction with respect to the shaft 50. Specifically, the shaft 50 can indirectly push and rotate any one of the first block 10 and the second block 20 when rotating in the clockwise or counterclockwise direction. For example, the second block 20 can be pushed when the shaft 50 rotates clockwise, and the first block 10 can be pushed when the shaft 50 rotates counterclockwise. At this time, the second block 20 needs to be moved in the clockwise direction so that the shaft 50 pushes the first block 10 clockwise and then pushes the second block 20 counterclockwise. The opposite is true, of course.

Accordingly, the first block 10 and the second block 20 can rotate together. Specifically, the unidirectional rotational damper according to the present embodiment may further include a connecting block 70 connecting the first block 10 and the second block 20.

The connecting block 70 may be positioned between the first block 10 and the second block 20 and may connect the first block 10 and the second block 20 together. In addition, the connecting block 70 may be provided adjacent to the inner wall of the housing 40 so as not to disturb the flow of the fluid as shown. Here, the connecting block 70, the first block 10 and the second block 20 may be integrally formed.

The third block 30 may be located between the first block 10 and the second block 20. At this time, the third block 30 may not interfere with the connecting block 70. And the third block 30 may be spaced apart from the first block 10 and the second block 20. That is, the first block 10, the third block 30, and the second block 20 may be arranged in this order. Also, at least a portion of the third block 30 may contact the inner wall of the housing 40.

And the third block 30 may be coupled to the shaft 50 and rotated together with the shaft 50. Therefore, when the shaft 50 rotates in the clockwise direction, the third block 30 is adjacent to the second block 20. When the shaft 50 is rotated in the counterclockwise direction, the third block 30 is adjacent to the first block 10. At this time, the third block 30 can contact the first block 10 and push the first block 10 as the shaft 50 further rotates. The third block 30 may contact the second block 20 and push the second block 20 as the shaft 50 rotates further. That is, the first block 10 and the second block 20 can be rotated counterclockwise and clockwise by the third block 30.

The third block 30 may also include a third opening 31 that communicates with the first opening 11 and the second opening 21 and through which the fluid may flow. Here, the third opening 31 passes through the third block 30 and can be disposed along the rotation direction of the shaft 50. Accordingly, the fluid can pass through the third opening 31 as the third block 30 rotates. Here, the first opening 11, the second opening 21, and the third opening 31 are shown in a quadrangular shape, but are not limited thereto, and may be circular, polygonal, or plural.

Meanwhile, the unidirectional rotational damper according to an embodiment of the present invention may have a different resistance when the shaft 50 rotates clockwise and counterclockwise. For example, when the shaft 50 rotates in the counterclockwise direction as compared with when the shaft 50 rotates in the clockwise direction, the damping force may be large due to the high resistance. Of course, the opposite is also possible.

When the shaft 50 rotates in the counterclockwise direction, the amount of flow (volume or mass) per unit angle of the fluid is relatively small, so that the rotational resistance is increased and the damping force of the one-way rotary damper can be increased. When the shaft 50 rotates in the clockwise direction, the amount of flow (volume or mass) per unit angle of the fluid becomes relatively large and the rotational resistance becomes small, so that the damping force of the one-way rotary damper can be reduced.

Referring to FIG. 3, as the shaft 50 rotates counterclockwise, the third block 30 is adjacent to the first block 10, and when the shaft 50 further rotates, the third block 30 and The first block 10 can be contacted. The third opening 31 is adjacent to the first opening 11 and the third opening 31 and the first opening 11 can overlap when the shaft 50 further rotates. At this time, the first opening 11 and the third opening 31 may form a first flow opening 61 through which the fluid flows.

Referring to FIG. 4, as the shaft 50 rotates clockwise, the third block 30 is adjacent to the second block 20, and when the shaft 50 further rotates, the third block 30 and the second The block 20 can be contacted. The third opening 31 is adjacent to the second opening 21 and the third opening 31 and the second opening 21 can overlap when the shaft 50 further rotates. At this time, the second opening 21 and the third opening 31 may form a second flow opening 62 through which the fluid flows.

At this time, the first flow opening 61 may be smaller than the second flow opening 62. That is, the fluid flow rate through the first flow opening 61 may be less than the flow amount through the second flow opening 62 per unit angle. Therefore, when the shaft 50 rotates in the clockwise direction, the flow resistance increases, and the unidirectional rotational damper can increase the damping force more than when the shaft 50 rotates counterclockwise.

The size of the cross section through which the fluid passes when the third opening 31 and the first opening 11 are overlapped is that the fluid passes when the third opening 31 and the second opening 21 are overlapped with each other May be smaller than the size of the cross section. Here, the cross section may be a plane including the central axis of the shaft 50.

That is, the third block 30 can adjust the damping force by adjusting the degree of opening of the first opening 11 and the second opening 21 differently by using the third opening 31. Or the third opening 31 may have a greater degree of opening when it overlaps with the second opening 21 than when it overlaps with the first opening 11. [ This will be described in detail below.

First, the first opening 11 and the second opening 21 will be described. The second opening 21 may be larger than or equal to the first opening 11. Specifically, the area through which the fluid passes through the second opening 21 may be greater than or equal to the area of the first opening 11. For example, the second block 20 may have a rectangular second opening 21 adjacent to the shaft 50 in a U-shaped block. The first block 10 may be a C-shaped block and may have a rectangular first opening 11 adjacent to the shaft 50. At this time, the size of the first opening 11 may be smaller than or equal to the size of the second opening 21.

If the size of the second opening 21 is smaller than the first opening 11, even if the second opening 21 and the third opening 31 are adjacent to each other to allow passage of a large amount of fluid during rotation in the clockwise direction, A resistive force is generated at the first electrode 11 and the damping force can be increased. That is, the damping force can be determined by the size of the first opening 11. Thus, the second opening 21 may be greater than or equal to the first opening 11.

The third opening 31 is a rectangular opening and can be spaced a predetermined distance from the shaft 50. Therefore, as shown in FIG. 3, the third opening 31 can be partially opened when it overlaps with the first opening 11. As shown in FIG. 4, the third opening 31 may be opened more than when it overlaps with the first opening 11, for example, when the third opening 31 is overlapped with the second opening 21.

FIGS. 5, 6 and 7 schematically illustrate the use of the one-way rotary damper according to the embodiment of the present invention.

The unidirectional rotary damper according to the present embodiment can be coupled to the hinge 1. Specifically, the housing 40 is fixedly coupled to one of the hinges 1, and the hinge 1 protruding from the housing 40 can be fixedly coupled to the other one of the hinges 1. The hinge 1 may be coupled to a door or the like.

At this time, the stopper 41 may be disposed such that the hinge 1 to which the housing 40 is coupled is positioned at the outer portion. Here, the portion where the hinge 1 is folded is referred to as the inside, and the opposite portion is referred to as the outside portion.

Referring to FIG. 6, the door may be in a closed state. 7, the shaft 50 rotates in a clockwise direction, and the first block 10 to the third block 30 can also rotate in a clockwise direction.

And the fluid may pass through the second opening 21 and the third opening 31. At this time, the fluid passes through the second flow opening 62 formed by the second opening 21 and the third opening 31, so that a small resistance can be generated. Therefore, the user can easily open the door by a little resistance or damping force.

Referring to FIG. 7, the door may be in an open state. At this time, the door can be closed to the state of FIG. 6 by the user or door check (not shown). The shaft 50 rotates in the counterclockwise direction and the first block 10 to the third block 30 can also be rotated counterclockwise.

And the fluid can pass through the first opening 11 and the third opening 31. At this time, the fluid passes through the first flow opening (61) formed by the first opening (11) and the second opening (21), so that a large resistance can be generated. Therefore, the door can be closed more slowly when opened.

Therefore, the one-way rotary damper according to the embodiment of the present invention prevents the opening force of the door from being opened too fast without obstructing the opening force of the door, and it can be closed too early when the door is closed.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: hinge 10: first block
11: first opening 20: second block
21: second opening 30: third block
31: third opening 40: housing
41: stopper 50: shaft
61: first flow opening 62: second flow opening
70: connecting block

Claims

A housing having a fluid therein;
A shaft rotatably coupled to the housing;
A stopper provided between the housing and the shaft to prevent the fluid from circulating;
A first block provided between the housing and the shaft and rotatable with respect to the shaft, the first block having a first opening through which the fluid can flow;
A second block provided between the housing and the shaft and rotatable about the shaft, the second block having a second opening through which the fluid can flow;
And a third opening which is coupled to the shaft and which is located between the first block and the second block and which is adjacent to the first block or the second block along the direction of rotation of the shaft, A third block;
Lt; / RTI >
The size of the first flow opening formed when the first opening and the third opening are adjacent to each other is smaller than the size of the second flow opening formed when the second opening and the third opening are adjacent to each other.

A housing having a fluid therein;
A shaft rotatably coupled to the interior of the housing;
A stopper provided between the housing and the shaft to prevent the fluid from circulating;
A first block disposed between the housing and the shaft, the first block being movable along the rotation direction of the shaft, the first block having a first opening through which the fluid can flow;
A second block provided between the housing and the shaft, the second block being movable along the rotation direction of the shaft and having a second opening through which the fluid can flow;
A third block located between the first block and the second block and adjacent to the first block or the second block along the direction of rotation of the shaft and coupled to the shaft and rotating, A third block having
/ RTI >
Wherein a size of a cross-section through which the fluid passes when the third opening overlaps with the first opening is smaller than a size of a cross-section through which the fluid passes when the third opening overlaps with the second opening.

3. The method according to claim 1 or 2,
Further comprising: a connecting block connecting the first block and the second block.

3. The method according to claim 1 or 2,
And the second opening is greater than or equal to the first opening.