KR101576248B1 - The friction rotary damper and the hinge having the same - Google Patents

The friction rotary damper and the hinge having the same Download PDF

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Publication number
KR101576248B1
KR101576248B1 KR1020140037662A KR20140037662A KR101576248B1 KR 101576248 B1 KR101576248 B1 KR 101576248B1 KR 1020140037662 A KR1020140037662 A KR 1020140037662A KR 20140037662 A KR20140037662 A KR 20140037662A KR 101576248 B1 KR101576248 B1 KR 101576248B1
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South Korea
Prior art keywords
housing
door
lever
rotary damper
rotation shaft
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Application number
KR1020140037662A
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Korean (ko)
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KR20150113550A (en
Inventor
최지한
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최지한
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Priority to KR1020140037662A priority Critical patent/KR101576248B1/en
Priority to PCT/KR2015/002154 priority patent/WO2015152525A1/en
Publication of KR20150113550A publication Critical patent/KR20150113550A/en
Application granted granted Critical
Publication of KR101576248B1 publication Critical patent/KR101576248B1/en

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    • 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
    • E05F5/006—Braking devices, e.g. checks; Stops; Buffers for hinges having a cup-shaped fixing part, e.g. for attachment to cabinets or furniture
    • 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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/14—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with fluid brakes of the rotary type

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  • Hinges (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

The friction rotary damper 100 according to the present invention includes a housing 110 opened to one side and having a working fluid filled therein to function as a receiving body, an impeller 130 accommodated in the housing 110 and mounted to rotate, And a cover 140 closing the opening of the housing 110. The impeller 130 includes a rotating shaft 133 passing through the cover 140 and a rotating shaft 133 formed on the outer surface of the rotating shaft 133. [ And a crank-shaped lever 150 connected to the end portion protruding from the rotation shaft 133 to the outside of the cover 140. The blade 135 has an outer end S And contact with the inner surface of the housing 110 to generate friction.
The hinge 200 equipped with the rotary damper according to the present invention includes a door fixing part 210 mounted with the friction rotary damper 100 and fixed to a door of a furniture, And a fixed arm (230) coupled to the link (220) so as to be pivotally mounted on an inner side wall of the side wall of the furniture, wherein the link (220) is configured to press the lever do.
Therefore, no clearance is generated over the entire section in which the door is rotated when the door of the furniture is closed, so that the shock and noise can be prevented.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a friction rotary damper,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction rotary damper and a hinge to which the friction rotary damper is mounted. More specifically, the present invention relates to a frictional rotary damper for preventing shocks and noise from occurring when a door of a furniture is closed. It is about a hinge.

The structure of the damper 40, which is mounted on the hinge for furniture 1 and alleviates the impact when the door D is closed, will be described with reference to FIGS. 1 and 2. FIG.

And a shaft 43 which is received in the housing 41 and reciprocates forward and backward and opens rearward. Further, a working fluid 49 and a compression spring 47 accommodated in the shaft 43 are constituted. The piston 45 is inserted into the rear of the shaft 43 and presses the working fluid 49 and the compression spring 47. The piston 45 is extended to the rear of the piston 45 and supported by the housing 41. A rod 46 is constructed. Needless to say, the piston 45 is constructed such that the working fluid 49 does not leak backward.

The structure of the furniture hinge 1 used for the furniture to which the damper 40 is attached will be described with reference to FIG.

A fixed arm 10 mounted on the inner side S of the side wall W constituting the main body of the furniture and a link 20 hingedly connected to the front end of the fixed arm 10 to rotate. Further, a door fixing portion 30 which is rotatably mounted on the link 20 and is fixed to the door D of the furniture is constituted.

The housing 41 of the damper 40 is fixed to the fixed arm 10 and the shaft 43 is directed toward the front side (door side). At this time, the damper 40 is adjusted in position so that the door fixing portion 30 presses the shaft 43 in a state where the door D is closed.

When the door D is closed, the door 43 is closed by the door 43. The door 43 is closed by the door 43, Is restored forward.

The damper 40 is configured to prevent shock and noise when the door D of the furniture is closed. However, in a state where the door D is opened, A clearance is generated until the door fixing portion 30 comes into contact with the shaft 43, so that there is a problem that a noise is generated together with an impact when the door fixing portion 30 contacts the shaft 43. That is, since the damper 40 operates only in a part of the rotation section of the door D, there is a problem that shock and noise can not be actually prevented.

Also, since the damper 40 is composed of 12 to 13 parts including a washer, a rod guide and the like in addition to the above-described parts, the damper 40 has a complicated structure, which makes it difficult to assemble, low productivity, and high cost.

It is common to attach the damper 40 while detaching the damper 40 when the fixing arm 10 is installed in the field because the damper 40 has a portion where the screw hole is drilled in the fixing arm 10 Because it covers it. Therefore, the damper 40 is mounted on the fixed arm 10 after the damper 40 is detached and the fixed arm 10 is mounted on the fixed arm 10, which results in troublesome work and low productivity.

In addition, the operating fluid 49 mainly uses silicone oil having a viscosity of 1,000,000 times so as to be able to function as a buffer. In this case, the housing 41 can not withstand pressure due to high viscosity and is damaged.

(Document 1) Korean Patent Registration No. 10-0873922 (December 08, 2008)

The friction rotary damper according to the present invention and the hinge having the friction damper according to the present invention are capable of buffering in all sections that are rotated when the door of the furniture is closed so that no clearance is generated so as to prevent the generation of impact and noise .

In addition, because of its simple structure, it is easy to assemble to improve the productivity and to reduce the production cost.

Further, since the operation of attaching the friction rotary damper separately in the field is omitted, the object of the present invention is to provide the convenience of the operation.

The object of the present invention is to make it possible to sufficiently function as a buffer even if a working fluid having a viscosity of 5,000 and a low viscosity is used.

The friction rotary damper according to the present invention is constructed as follows.

And a cover for closing an opening of the housing, wherein the impeller penetrates the cover through the cover. The impeller includes: a housing that is opened to one side and is filled with a working fluid to function as a housing; And a crank-shaped lever connected to an end portion protruding outwardly of the cover from the rotation shaft, wherein the blade has an outer end portion contacting the inner side surface of the housing Thereby generating friction.

The blades are configured such that the pressure receiving surface faces the rotating direction of the rotating shaft, and the blades are connected to the side walls of the flange and formed on the outer surface of the rotating shaft.

In addition, the side walls are formed in a plurality of and connected to the respective blades.

In addition, the side wall is in the shape of a disc formed continuously along the circumference of the rotating shaft.

And a hole penetrating the side wall.

And a torsion spring which is received and fixed inside the housing and connected to the rotation shaft 133.

The friction rotary damper according to the present invention may be constructed as follows.

And a cover for closing an opening of the housing, wherein the impeller penetrates the cover through the cover. The impeller includes: a housing that is opened to one side and is filled with a working fluid to function as a housing; And a crank-like lever connected to an end portion protruding from the rotary shaft at an outer side of the cover, wherein the crank-like lever is connected to the rotary shaft, And the outer surface of the outer ring is configured to contact the inner surface of the housing when rotating.

And a torsion spring which is received and fixed in the housing and connected to the rotation shaft.

The construction of the hinge with the friction rotary damper according to the present invention is as follows.

And a fixed arm attached to an inner side surface of the side wall connected to the door so as to be pivotally connected to the door, wherein the door is fixed to the door by the frictional rotary damper, The link is configured to press the lever.

The door fixing portion may include a hinge cup formed to hinge the link and to rotate the link, and a flange formed at an edge of the hinge cup and fixed to the door of the furniture, The friction rotary damper is fixed and the rotary shaft is passed through the hinge cup, the lever is received in the hinge cup and connected to the rotary shaft, and the link is rotated to be received in the hinge cup The lever is pressed and rotated.

Further, in the door fixing portion, a frictional rotary damper, which is the same as the frictional rotary damper, is further mounted on a side surface of the door corresponding to the side on which the frictional rotary damper is mounted, and is connected to the lever in the same structure as described above.

Further, in the door fixing portion, a spring damper is further mounted on the side surface of the door corresponding to the side on which the rotary damper is mounted, and is connected to the lever, and the spring damper is opened to one side A torsion spring received and fixed within the housing; a rotation shaft connected to the torsion spring and received in the housing, the rotation shaft extending to the open side of the housing; and the rotation shaft passing through the rotation shaft and closing the opening of the housing And the rotary shaft is connected to the lever through the mating side surface.

Further, the lever 150 is characterized by being of a d-shape or a d-shape.

The friction rotary damper according to the present invention and the hinge having the friction damper according to the present invention are capable of buffering in a whole section that rotates when a door of a furniture is closed.

Further, in the state that the friction rotary damper is mounted on the door fixing portion of the furniture hinge, the friction rotary damper does not cover the screw hole for attaching the hinge to the furniture, so that it is troublesome to attach the frictional rotary damper separately in the field So that productivity can be improved.

In addition, since the load is applied by the friction between the impeller and the housing, even if the silicone oil having a low viscosity is used, the buffering effect can be obtained as if a sufficiently high viscosity silicone oil is used. Therefore, since the silicone oil having a high viscosity is used, the present invention can be prevented from being broken.

In addition, since the number of components is only five as compared with the background art, the frictional rotary damper has a simple structure and is easy to assemble, so that the productivity can be improved and the production cost can be reduced.

1 is a perspective view showing a furniture hinge according to the background art;
2 is a sectional view showing a damper mounted on a furniture hinge according to the background art;
3 is a perspective view showing a friction rotary damper according to the present invention.
4 is an exploded perspective view showing a friction rotary damper of the present invention.
5 is a perspective view showing the front and rear of the impeller mounted on the friction rotary damper of the present invention,
FIG. 6 is a perspective view showing an impeller mounted on a friction rotary damper according to another embodiment of the present invention, showing a front side and a rear side. FIG.
7 is a perspective view showing a first embodiment of a hinge equipped with a friction rotary damper according to the present invention;
8 is a perspective view showing a second embodiment of a hinge equipped with a friction rotary damper according to the present invention.
9 is a perspective view showing a spring damper mounted in a third embodiment in which a friction rotary damper according to the present invention is mounted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a friction rotary damper according to the present invention, FIG. 4 is an exploded perspective view showing a friction rotary damper according to the present invention, and FIG. 5 is a front view and a rear view of the impeller mounted on the friction rotary damper, FIG. 6 is a perspective view showing an impeller mounted on a friction rotary damper of the present invention, showing front and rear views, and FIG. 7 is a front view of a hinge with a friction rotary damper according to the present invention. Fig. 8 is a perspective view showing a second embodiment of a hinge equipped with a friction rotary damper according to the present invention, Fig. 9 is a perspective view of a hinge mounted on a third embodiment equipped with a friction rotary damper according to the present invention The spring damper will be described together with a perspective view.

The friction rotary damper 100 according to the present invention will be described with reference to FIGS. 3 to 5. FIG.

A housing 110 which is opened to one side and filled with a working fluid such as silicone oil is constituted so as to have a receiving function and an impeller 130 which is accommodated in the housing 110 and supported to rotate is constituted, A cover 140 closing the opening of the cover 110 is formed.

The impeller 130 includes a rotating shaft 133 passing through the cover 140 and a blade 135 formed on the outer surface of the rotating shaft 133. The impeller 130 rotates around the rotating shaft 133 to the outside of the cover 140 And a crank-shaped lever 150 connected to the protruding end portion. The blade 135 is configured to receive a large load so as to be bent in a forward direction (a direction in which the door is closed), and to rotate smoothly in a reverse direction (direction in which the door is opened)

The blade 135 contacts the inner surface of the housing 110 to generate friction, so that the blade 135 has a buffering function. The inner surface of the housing 110 is formed in a circular shape so that the outer end S of the blade 135 is guided. Since the blade 135 faces the rotation direction of the rotary shaft 133, the hydraulic fluid is compressed and the buffering function is enabled.

Since the side wall 137 is formed on the outer surface of the rotary shaft 133 and the blade 135 is connected to the side wall 137, the blade 135 is damaged by the compressive force. And the outer side end portion of the side wall 137 is brought into contact with the inner side surface of the housing 110, so that friction can be generated to provide a buffering function.

Since the side walls 137 are formed in a plurality of and connected to the respective blades 135, a spacing M is formed between the side walls 137. Accordingly, the working fluid can pass through the spacing portion M. As the size of the spacing portion M becomes smaller, the load on the rotating shaft 133 becomes larger. Therefore, the size of the load can be adjusted through the size of the spacing portion M.

In another embodiment of the side wall 137, a circular plate may be formed continuously along the circumference of the rotation shaft 133. A hole (not shown) through which the working fluid passes is formed through the side wall 137. The smaller the size of the hole (not shown), the greater the load on the rotary shaft 133. Therefore, the size of the load can be adjusted through the size of the hole (not shown).

The cover 140 is formed with a through hole 145 to allow the rotation shaft 133 to pass therethrough. However, since the rotation shaft 133 is fitted in the inner oil chamber 161, the through hole 145 is closed, . That is, the inner oil chamber 161 rotates in a state in which the gap between the rotary shaft 133 and the through-hole 145 is closed. In addition, the outer oil chamber 162 is interposed between the housing 110 and the cover 140 so that the working fluid does not leak. The description of the sealing technique is obvious to anyone skilled in the art, so a detailed description thereof will be omitted.

The cover 140 is formed as an example of a cap and is configured to fit the housing 110 and is disposed between the cover 140 and the housing 110 by an outer oil chamber 162 which is in close contact with the inner surface of the cover 140. [ Thereby preventing the working fluid from leaking.

The cover 140 is provided with a plurality of flanges 147 each having a hole 149 so that the cover 149 can be attached. Therefore, a tubular protrusion protruding from the door fixing part 210, which will be described later, is inserted through the hole 149 and then caulked so that it can be mounted.

The lever 150 has a crank-like shape capable of converting a linear motion, such as an L-shape or a C-shape, into a rotational motion.

Another embodiment of the impeller 130 will be described with reference to FIG.

The impeller 130 includes a rotating shaft 133 passing through the cover 140 and an outer ring 131 formed along the circumference of the rotating shaft 133. In addition, a blade 135 connecting the inner surface of the outer ring 131 and the outer surface of the rotation shaft 133 is formed. The blade 135 is configured such that the hydraulic pressure surface U is directed to the rotating direction of the rotating shaft 133, so that the operating fluid is compressed to enable the buffering function. The outer surface of the outer ring 131 is configured to contact the inner surface of the housing 110 when it rotates to generate friction, so that the shock absorbing function is enabled. In order to increase the strength of the outer ring 131 and the blade 135, a side wall 137 covering one side of the outer ring 131 is formed. The outer ring 131 and one side of the blade 135 are connected to the side wall 137 so that the outer ring 131 and the blade 135 are not damaged even if they rotate in a high viscosity working fluid. The side wall 137 may be configured to contact the inside of the housing 110 to generate friction to enable a buffering function. In addition, a hole H through which the working fluid passes is formed through the side wall 137. The smaller the size of the hole H, the more load is applied to the rotating shaft 133. Therefore, the size of the load can be adjusted through the size of the hole H.

An operation example of the friction rotary damper 100 will be described with reference to FIGS. 3 to 5. FIG.

The blade 135 and the side wall 137 rotate in contact with the inside of the housing 110 when the rotation shaft 133 is rotated in a direction in which the torsion spring 120 is wound by applying a force to the lever 150, And the pressure receiving surface U of the blade 135 is loaded by the working fluid. Of course, at this time, the torsion spring 120 also generates a load in a winding state. The working fluid passes through the spacers M and holes (not shown). As the sizes of the spacers M and holes (not shown) increase, the load decreases, The load can be controlled by adjusting.

Therefore, even if a force is applied to the lever 150, the impeller 130 does not turn over but slowly rotates. In this case, even if the working fluid is used at a low viscosity of 5,000, the friction force and the load of the blade 135 cause the working fluid to slowly rotate. Generally, the working fluid having the number of 5,000 times is low viscosity, and thus is not used for a damper. Therefore, although the fluid having the viscosity of 1,000,000 times is used most often, the viscosity is too large to generate a high pressure in the housing 110, which may damage the life. However, since the present invention uses a low viscosity working fluid, damage due to high pressure can be prevented, and a buffering effect such as using a high viscosity working fluid can be obtained for the impeller 130 while using a low viscosity working fluid. When the force is applied to the lever 150 in this state, the rotating shaft 133 rotates in the opposite direction due to the restoring force of the torsion spring 120.

When the impeller 130 of another embodiment shown in FIG. 6 is mounted, when the rotation shaft 133 is turned by applying a force to the lever 150, the outer ring 131 and the side wall 137 are separated from the inner surface of the housing 110 A friction force is generated, and the blade 135 receives a load by the working fluid. The working fluid passes through the hole H, and as the size of the hole H increases, the load decreases. Therefore, the load can be controlled by adjusting the size. Therefore, even if a force is applied to the lever 150, the impeller 130 does not turn over but slowly rotates. When the force is applied to the lever 150 in this state, the rotating shaft 133 rotates in the opposite direction due to the restoring force of the torsion spring 120. The effect of the impeller 130 according to the other embodiment is the same as the embodiment shown in FIG. 3 through FIG.

A first embodiment of a hinge 200 equipped with a rotary damper according to the present invention will be described with reference to FIGS. 3 to 7. FIG.

A door fixing portion 210 is formed in which the friction rotary damper 100 is mounted and fixed to a door of a furniture. A link 220 connected to rotate the door fixing unit 210 is formed and a fixed arm 230 connected to the link 220 so as to rotate is mounted on an inner side surface of the side wall of the furniture. The link (220) is configured to press the lever (150). Since the configuration excluding the friction rotary damper 100 in the above-described configuration is a general technique, it can be understood by anyone skilled in the art, and a detailed description thereof will be omitted.

The door fixing part 210 includes a hinge cup 215 in the form of a container which is opened to one side so that the link 220 is hinged and the link 220 is rotated and accommodated, A flange 217 is formed at the rim of the door 215 to be fixed to the door of the furniture. The flange 217 is configured such that a screw hole penetrates and is fixed to the door by a screw. The flange 217 is formed at the end edge of the open side of the hinge cup 215.

Further, the friction rotary damper 100 is fixed to the side surface of the hinge cup 215, and it is preferably mounted on the upper portion or the lower portion. The rotation shaft 133 passes through the hinge cup 215 and the lever 150 is received in the hinge cup 215 and connected to the rotation shaft 133. And is configured to press and rotate the lever 150 when the link 220 rotates and is accommodated in the hinge cup 215. That is, to force the link 220 in a linear direction.

One side plate 151 is fixed to the rotary shaft 133 and the mating plate 153 is fixed to the link 220 .

The lever 150 is configured to be in a state in which the mating plate 153 is pivoted to the opened side of the door fixing part 210 in the free state of the torsion spring 320. [ Thus, when the link 220 is received in the hinge cup 215, it is configured to receive an external force immediately.

Therefore, the fixing arm 230 is fixed to the inner side surface of the side wall of the furniture, and the door fixing portion 210 is fixed to the inner side surface of the door of the furniture.

In this state, when the door is closed while the door is opened, the link 220 is pivoted to be received in the hinge cup 215 and pushes the lever 150. At this time, as the torsion spring 120 is wound, a load is generated in the friction rotary damper 100, so that the door suddenly closes, thereby preventing shock and noise from occurring. Further, when the door is opened, it is opened by the restoring force of the torsion spring 120.

7, when the torsion spring 320 is in a free state, the lever 150 is rotated in the direction of the arrow A, The link 220 can be brought into a state in which it is in close contact with the link 220. Therefore, a clearance phenomenon occurring when the door is closed can be prevented. Since the door fixing part 210 is mounted on the side surface of the hinge cup 215, the door fixing part 210 or the fixing arm 230 does not cover the screw holes. Therefore, it is possible to solve the problem of attaching the friction rotary damper 100 after attaching the door fixing portion 210 and the fixing arm 230 to the furniture.

When the closed door is opened again, the blade 135 of the impeller 130 is bent in the winding direction of the torsion spring 120, so that a load less than when the door is closed is received, and the torsion spring 120 is again rotated in the reverse direction The door can be opened smoothly because it is restored. At this time, the lever 150 is restored to its original state.

A second embodiment of a hinge 200 equipped with a rotary damper according to the present invention will be described with reference to FIG.

A frictional rotary damper 100 'identical to the frictional rotary damper 100 is provided on a side surface of the door fixing part 210 corresponding to the side on which the friction rotary damper 100 is mounted. And is connected to the lever 150 in the same structure as that of the first embodiment.

At this time, the lever 150 is formed in a c-shape. That is, one plate (a, c) connected to each rotation shaft 133 of the two friction rotary dampers 100, 100 ' and a counter plate (b) connected to the one plate are constituted.

The lever 150 is configured to pivot the mating plate b toward the link 220 when the torsion spring 120 is in a free state. Since the mating plate b is configured to be close to the link 220, it is preferable that no clearance is generated.

The operation example of the second embodiment is the same as that of the first embodiment.

A third embodiment of a hinge 200 equipped with a rotary damper according to the present invention will be described with reference to FIG. Since the appearance of the third embodiment is the same as that of the second embodiment, FIG.

In the configuration of the first embodiment, a spring damper 300 is further mounted on a side of a mating surface corresponding to a side on which the friction rotary damper 100 is mounted, and is connected to the lever 150.

The spring damper 300 includes a housing 310 that is open to one side and a torsion spring 320 that is received and fixed within the housing 310. The rotating shaft 330 is connected to the torsion spring 320 and is received in the housing 310 to extend to the opened side of the housing 310. The rotating shaft 330 is passed through the housing 310 The cover 340 is closed. The rotation shaft 330 is connected to the lever 150 through the mating side.

The lever 150 is formed in a C shape. That is, one plate (a, c) connected to the rotation shafts 133, 330 of the both-side friction rotary damper 100 and the counter plate (b) connected to the one plate are constituted. The rotary shaft 330 is connected to the one side plate c through the door fixing part 210.

The torsion spring 320 of the spring damper 300 is configured to be wound in the same direction as the friction rotary damper 100.

Therefore, the door of the furniture is closed by the frictional rotary damper 100 and the spring damper 300 when the door is closed, and is opened smoothly when it is opened.

In the fourth embodiment of the hinge 200 equipped with the friction rotary damper according to the present invention, in the configuration of the third embodiment, the torsion spring 120 is not mounted on the friction rotary damper 100 can do. Accordingly, when the door of the furniture is closed, the load is applied to the friction rotary damper 100 so that the door is gradually closed. When the door is opened, the door is opened by the restoring force of the torsion spring 320 of the spring damper 300 You may.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not for purposes of limiting the technical idea of the present invention, but are intended to be illustrative, and therefore, the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100, 100 ': Friction rotary damper 110: Housing
120: Torsion spring 130: Impeller
A hinge provided with a rotary damper; a door fixing portion; a hinge cup; a hinge cup; a flange; a flange; a link; a link; 300: spring damper 310: housing 320: torsion spring 330: rotating shaft 340: cover
M: Separation part H: Hole

Claims (13)

A housing 110 opened to one side so as to have a receiving function and filled with a working fluid,
An impeller 130 accommodated in the housing 110 and mounted to rotate,
And a cover (140) closing the opening of the housing (110)
The impeller 130 includes a rotation shaft 133 passing through the cover 140,
A blade 135 formed on an outer surface of the rotating shaft 133,
And a crank-shaped lever 150 connected to the end portion protruding from the rotation shaft 133 to the outside of the cover 140,
Wherein the blade (135) is configured such that the outer end (S) contacts the inner surface of the housing (110) to generate friction. The method according to claim 1,
The blade 135 is configured such that the pressure receiving surface U faces the rotating direction of the rotating shaft 133,
A flange-shaped side wall 137 formed on the outer surface of the rotary shaft 133,
And the blade (135) is connected to the side wall (137). 3. The method of claim 2,
Wherein the side walls (137) are formed in a plurality of pieces and connected to the respective blades (135). 3. The method of claim 2,
Wherein the side wall (137) is formed in a disc shape continuously formed around the rotation shaft (133). 5. The method of claim 4,
And a hole (H) penetrating through the side wall (137). A housing 110 opened to one side so as to have a receiving function and filled with a working fluid,
An impeller 130 accommodated in the housing 110 and mounted to rotate,
And a cover (140) closing the opening of the housing (110)
The impeller 130 includes a rotation shaft 133 passing through the cover 140,
An outer ring 131 formed around the rotation shaft 133,
A blade 135 connecting the inner surface of the outer ring 131 and the outer surface of the rotation shaft 133,
And a crank-shaped lever 150 connected to the end portion protruding from the rotation shaft 133 to the outside of the cover 140,
Wherein an outer surface of the outer ring (131) is configured to contact an inner surface of the housing (110) when the outer ring (131) rotates. 7. The method according to any one of claims 1 to 6,
And a torsion spring (120) received and fixed in the housing (110) and connected to the rotation shaft (133). A door fixing part 210 to which the friction rotary damper 100 according to claim 7 is mounted and fixed to the door,
A link 220 connected to the door fixing portion 210 so as to rotate,
And a fixing arm (230) connected to the link (220) so as to be rotatable and attached to an inner side surface of the side wall on which the door is mounted,
Wherein the link (220) is configured to press the lever (150). 9. The method of claim 8,
The door fixing part 210 includes a hinge cup 215 hinged to the link 220 and configured to pivotally receive the link 220,
And a flange (217) formed at the rim of the hinge cup (215) and fixed to the door of the furniture,
The friction rotary damper 100 is fixed to a side surface of the hinge cup 215,
The rotation shaft 133 passes through the hinge cup 215,
The lever 150 is received in the hinge cup 215 and connected to the rotation shaft 133,
Is configured to press and rotate the lever (150) when the link (220) rotates and is accommodated in the hinge cup (215). 10. The method of claim 9,
In the door fixing part 210, a frictional rotary damper 100 'identical to the frictional rotary damper 100 is further mounted on a side surface of the door corresponding to the side on which the friction rotary damper 100 is mounted,
Wherein the rotary shaft (133) of the friction rotary damper (100 ') is connected to the lever (150) through the hinge cup (215) . 10. The method of claim 9,
A spring damper 300 is further mounted on a side surface of the door fixing part 210 corresponding to the side on which the rotary damper 100 is mounted and connected to the lever 150,
The spring damper (300) includes a housing (310) opened to one side in order to perform a receiving function,
A torsion spring 320 received and fixed in the housing 310,
A rotation shaft 330 connected to the torsion spring 320 and received in the housing 310 to extend to the opened side of the housing 310,
And a cover (340) through which the rotation shaft (330) passes and finishes an opening of the housing (310)
Wherein the rotary shaft (330) is connected to the lever (150) through the mating side surface. 9. The method of claim 8,
The lever 150 is equipped with a friction hinge, characterized in that the rotary damper type b. 11. The method of claim 10,
The lever 150 is of a C shape and includes one side plates a and c connected to the rotary shaft 133 of the friction rotary dampers 100 and 100 '
And a counter plate (b) connected to the one plate (a, c) .
KR1020140037662A 2014-03-31 2014-03-31 The friction rotary damper and the hinge having the same KR101576248B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140037662A KR101576248B1 (en) 2014-03-31 2014-03-31 The friction rotary damper and the hinge having the same
PCT/KR2015/002154 WO2015152525A1 (en) 2014-03-31 2015-03-06 Friction rotary damper and hinge having same mounted thereon

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CN107218076A (en) * 2017-08-07 2017-09-29 江西理工大学 A kind of full-automatic drop shaft anti-fall device

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KR101643408B1 (en) * 2015-09-18 2016-07-27 최지한 Hinge having double damper

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