KR20030090233A - A door hinge provided with a damper element - Google Patents

Abstract

PURPOSE: A hinge having a function of a damper is provided to remove noise and to make operation smoothly by making a door closed slowly and to reduce manufacturing costs by simplifying a damper. CONSTITUTION: In a hinge provided with a door assembly member(210) having a door fixing bracket(212) formed on one side of a cylindrical housing(211), a doorframe fixture(220) having a doorframe fixing bracket(222) formed on a cylindrical housing(221), a movable shaft(230) interposed to hollows of the housings(211,221), and a damper coupled with the movable shaft(230) to operate a door, wherein the damper contains: a one-way clutch(250) attached to the movable shaft(230) coupled into the lower end of the housing(211) of the door assembly member(210) to move the movable shaft(230) in the closing direction only when a door is closed; and a rotation breaking member(260) coupled with the movable shaft(230) in the housing(221) of the doorframe fixture(220) and stopping the rotation of the movable shaft(230) when a door is closed.

Description

A door hinge provided with a damper element

The present invention relates to a hinge having a damper function, and more particularly, to a hinge having a damper function in which a damper device having a simple structure is installed in the hinge of the door so that the door is free when the door is opened and the door is braked when the door is closed.

In general, the hinge is installed between the door frame and the door to enable the door to rotate, and is spread in various forms according to its function.

However, due to long-term use, frequent breakdowns and noises are apt to occur, and in recent years, a function of automatically closing the door in the open state is provided to smooth the operation of the door and prevent noise from occurring when the door is opened and closed. The door check to be performed was installed and used on the upper side of the door.

Such a door check has a problem such that the installation cost of the door frame and the installation of the expensive door check is carried out separately, the installation cost burden and the hassle of work.

Therefore, there are those having a damper clutch that functions as a door check directly inside the hinge of the door for smooth operation of the door, there is utility model registration No. 231698.

The hinge structure illustrated in the above document is a hinge having a damper clutch device using hydraulic pressure, and as shown in FIG. 1, the first rotating member 11 and the door fixing bracket 12 are integrally formed with the door pivot member. (1); A door frame fixing member 2 in which a cylindrical second housing 21 and a door frame fixing bracket 22 are integrally formed; A pivot shaft 31 coupled to the inner cylinder 30 of the door pivot member 1 is provided, and a first check valve 33 and the cylinder 30 are formed at the center of the head 32 of the cylinder 30. A piston 35 having a second check valve 34 is provided at an inner central portion, and the hydraulic actuator 3 is configured to linearly and vertically rotate and rotate along the lower guide portion 36 of the cylinder 30. ) Is composed of a damper hinge provided.

However, the conventional damper hinge has a problem such that the sudden closing operation of the door is prevented, but the structure including the hydraulic actuating unit is complicated and the manufacturing cost increases due to the excessive number of parts.

The object of the present invention devised in view of the above problems is to provide a hinge that facilitates the smooth operation when the door is opened or closed, as well as to simplify the manufacturing and reduce the cost of purchase by simplifying the structure. .

In addition, the present invention provides a hinge having damper devices capable of braking a sudden closing operation of the door.

1 is a cross-sectional view showing one structure of a conventional hinge,

2 is an exploded perspective view showing a hinge of a first embodiment of the present invention;

3 is a longitudinal sectional view showing the hinge of FIG.

Figure 4 is a longitudinal cross-sectional view showing a coupling state of the one-way clutch and the rotation shaft of the hinge of Figure 2,

Figure 5 is a plan view showing a coupling state of the one-way clutch and the rotating shaft of the second embodiment of the present invention,

Figure 6 is a longitudinal cross-sectional view showing a coupling state of the one-way clutch and the rotating shaft of the third embodiment of the present invention,

Figure 7a is a front view showing a coupling state of the one-way clutch and the rotating shaft of the fourth embodiment of the present invention,

Figure 7b is a front view showing the operation of the one-way clutch of Figure 7a,

8 is a partial cross-sectional view showing a hinge of a fifth embodiment of the present invention;

9 is a partial sectional view showing a hinge of a sixth embodiment of the present invention;

(Explanation of symbols for the main parts of the drawing)

210; Door pivoting members 211,221; housing

212; Door fixing bracket 220; Door frame fixing member

222; Door frame fixing bracket 230; Pivot

243; Pivot shaft support 250; One Way Clutch

251; Bearing housing 251a; Accommodation home

252; Roller bearings 253; Leaf spring

254; Spring holder 254a; Receptacle

254b; Locking groove 255; Coil spring

255a; Bottom portion 260; Rotary Braking Member

303; Wedge 303a; Wedge

303b; Inclined plane 305; Incision

307; Torsion springs 309; Rotating protrusion

401; Friction member 403; Protrusion

503; Ball spring 505; Flow ball

505a; Tooth 507; Fixture

653a; Circumference 653b; Home

755,756; Coil spring

The present invention for achieving the above object, the door rotation member formed on the door fixing bracket on one side of the cylindrical housing, the door frame fixing member formed on the door frame fixing bracket on the cylindrical housing, and the hollow portion of the housing coupled up and down A hinge provided with a rotating shaft inserted and coupled, and a damper device coupled to the rotating shaft to brake opening and closing of the door. A one-way clutch that rotates only in the direction of closing the pivot shaft when the door is closed; It is characterized in that it comprises a rotary braking member coupled to the rotating shaft in the middle of the housing of the door frame fixing member, for braking the rotation of the rotating shaft when the door is closed.

The one-way clutch is a bearing housing; A plurality of accommodating grooves formed on the inner circumferential surface of the bearing housing at regular intervals; A plurality of roller bearings mounted vertically in the receiving grooves; It may be composed of a leaf spring mounted in each end of the receiving groove to force the roller bearing to the other end side.

The one-way clutch has a plurality of wedge grooves formed on an inner circumferential surface of the pivot shaft support bush that is axially coupled to the upper end of the door pivot member, and a wedge portion having an inclined surface formed therein; A braking piece, one end of which is fixed to the upper end surface of the rotation shaft by a hinge and the other end of which is engaged with the wedge groove; It may be composed of a torsion spring which is laid to give the braking piece to one side.

The one-way clutch may be configured as a carriage member having a plurality of inclined protrusions extending in an inclined direction in one direction to the inner circumferential surface, and each inner end of the one-way clutch being in contact with the outer circumferential surface of the pivot shaft.

The one-way clutch, the fixed clutch is fixed to the rotation shaft, the fixed clutch formed with one-way gear teeth round the outer peripheral surface; A movable clutch which is axially coupled to the rotating shaft and has a one-way gear tooth engaged with the gear tooth on an outer circumference of a lower surface thereof; It may be composed of a ball spring spring axially coupled to the rotating shaft to give the movable clutch downward shot.

The one-way clutch may include: a spring holder mounted to the rotating shaft coupled to the housing of the door pivot member; It is accommodated in the receiving portion formed in the lower portion in the spring holder, it may be composed of a coil spring that is extended to the upper end bent outward to the engaging groove formed on the outer wall of the receiving portion.

The rotary braking member may include: a coil spring formed to be inserted into the pivot shaft in the middle of the housing of the door frame fixing member, the lower end of which being extended outwardly; An accommodating part for accommodating a lower portion of the coil spring may be formed on an inner circumferential surface thereof, and an outer wall of the accommodating part may include a spring holder having a hooking groove for hooking an extended lower end of the coil spring.

The rotary braking member is mounted to be coupled to the rotation shaft in the housing of the door frame fixing member, the upper and lower inner circumferential surface is formed with a receiving portion, each outer wall of the receiving portion has a spring holder formed with engaging grooves; A lower portion and an upper portion are respectively accommodated in the upper and lower accommodating portions, and the lower and upper ends bent outwardly to the engaging grooves may be configured as coil springs, respectively.

The coil spring may have an inner diameter smaller than the diameter of the rotation shaft.

The hinge having a damper function according to the present invention having such a configuration provides a damper device inside the hinge so that the door is free when the door is opened and progresses gradually in one direction when the door is closed, thereby preventing noise when closing, and the damper structure By simplifying the manufacturing cost burden can be reduced.

Hereinafter, a preferred embodiment of the damper hinge of the present invention as described above will be described in more detail with reference to the accompanying drawings.

2 is an exploded perspective view showing the hinge structure of the first embodiment of the present invention, Figure 3 is a longitudinal sectional view showing the hinge of FIG.

As shown in Figures 2 to 3, the hinge having a damper according to an embodiment of the present invention, the door rotating member 210 having a cylindrical housing 211, the door frame having a cylindrical housing 221 And a one-way clutch 250 for rotating only in a direction in which the rotating member 230, the rotating shaft 230 coupled to the inside through the respective housings 211 and 221, and the rotating shaft 230 are closed. It comprises a rotary braking member 260 for braking the rotation of the rotation shaft 203 when the door is closed.

The door pivot member 210 is integrally formed with a door fixing bracket 212 which is fastened by a screw (not shown) to the door to one side of the housing 211 formed of a cylindrical body, and a plurality of fastenings to the door fixing bracket 212. The balls 212a are penetrated.

The door frame fixing member 220 has a cylindrical housing 221 having a circumferential step 223 to which the lower end of the housing 211 of the door pivot member 210 is coupled at an upper end thereof. A door frame fixing bracket 222 that can be fastened to the door frame is integrally formed, and a plurality of fastening holes 222a are penetrated through the door frame fixing bracket 222.

On the other hand, circumferential jaws 211a and 221a to which the protective cap 241 may be fitted to protect both ends of the rotational shaft 230 coupled to the upper end of the housing 211 and the respective opposite ends of the housing 221. Is formed.

The rotating shaft 230 is coupled to the inside of the door rotating member 210 and the door frame fixing member 220, and supports the rotating shaft 230 in the housing 211 and 221 at both ends thereof. Rotating shaft support bushes 243 coupled to 230 to enable rotation are respectively coupled to upper and lower parts.

Figure 4 shows a longitudinal cross-sectional view showing a state of engagement of the one-way clutch and the rotating shaft of the hinge of FIG.

The one-way clutch 250 has a bearing housing 251 and a plurality of receiving grooves 251a formed at a predetermined interval on the inner surface of the bearing housing 251, and are respectively perpendicular to the receiving grooves 251a. A plurality of roller bearings 252 to be mounted are mounted. And it is provided in each end of the receiving groove (251a) is provided with a leaf spring 253 to force the roller bearing 252 to the other end side.

As such, the roller bearing 252 receives elasticity to one side and the roller shaft 252 receives the elasticity of the leaf spring 253 when the rotating shaft 230 reversely rotates in a free relationship, so that the roller bearing 252 contacts the contact surface of the rotating shaft 230. It can be rolled, while reducing the frictional resistance by rolling friction is to be able to rotate with the rotating shaft 230.

The rotary braking member 260 has a spring holder 253 which is coupled to the rotation shaft 230 inside the housing 221 of the door frame fixing member 220, and is directly above the spring holder 253. Winding coil spring 255 is formed to be coupled to the 230 is coupled. In addition, the coil spring 255 is formed with a lower end portion 255a, the part of which is wound at the lower end of the other side in the longitudinal direction and is bent to the outside.

Meanwhile, an accommodating part 254a is formed on an inner circumferential surface of the upper end of the spring holder 254 to accommodate a lower portion of the coil spring 255, and an outer wall of the accommodating part 254a has a lower end 255a of the coil spring 255. ), A locking groove 254b is formed to support the coil spring 255 during rotation of the door pivot member 210.

In addition, the rotation shaft 230 has a diameter of about 10 mm in diameter, and the inner diameter of the coil spring 255 connected to the rotation shaft 230 has an inner diameter of the coil spring 255 about 0.98 mm in diameter. It is preferable to form smaller than the diameter of the coaxial 230. This is the most appropriate state that the coil spring 255 is fitted to the rotation shaft 230 is not necessarily limited to the dimensions, but the coil spring 255 is opened and the contact surface is separated by a slight difference from the rotation shaft 230 It is sufficient if friction force is generated when the rotation shaft 230 is rotated at the contact surface.

The coil spring 255 is in the form of biting the rotating shaft 230, if the door rotating member 210 is rotated in the direction of closing the door, the coil in the locking groove 254b of the spring holder 254 In the state in which the lower end 255a of the spring 255 is coupled, a force acts in the opposite direction of the wound coil spring 255 to open the coil spring 255 engaged with the rotational shaft 230, and the rotation The coil spring 255 is spaced apart from the adhesive surface of the coaxial 230. Therefore, after the coil spring 255 is spaced apart, the roller bearing of the one-way clutch 250 coupled to the upper side of the rotation shaft 230 in a state where the frictional force between the rotation shaft 230 and the coil spring 255 is canceled ( 252) can be rotated together.

In other words, forming the inner diameter of the coil spring 255 smaller than the diameter of the pivot shaft 230 is such that the coil spring 255 is tightly fixed to the pivot shaft 230, and the wound coil spring 255 is fixed. When the force acts in the opposite direction, the wound spring is opened to take a shape, and the diameter of the rotation shaft 230 and the inner diameter of the coil spring 255 are equal to each other so that the rotation shaft 230 is the coil spring 255. The structure becomes loose in the rotation of the rotating shaft 230 is free to rotate.

Therefore, when the coil spring 255 is in contact with the rotating shaft 230, the coil spring 255 bites the rotating shaft 230, so that the roller bearing 252 in the state in which the rotating shaft 230 is fixed The connected door rotating member 210 is free to rotate so that the door is opened.

When the coil spring 255 is spaced apart from the pivot shaft 230, the door is closed, so that the one-way clutch 250 can rotate simultaneously with the pivot shaft 230 so that the door operates by the rotation control member 260. It will close slowly while maintaining friction.

FIG. 5 is a plan view showing a coupling state of the one-way clutch and the rotating shaft according to the second embodiment of the present invention, and the rotating shaft connecting bush 243 coupled to the rotating shaft 230 at the upper end of the door rotating member 210. Shows a one-way clutch 250 installed in the inner diameter of.

The one-way clutch 250 is a wedge portion in which a plurality of wedge grooves 303a having inclined surfaces 303b are formed around the inner circumferential surface of the pivot shaft support bush 243 which is axially coupled to the upper end of the door pivot member 210. 303 is formed, one end of which is fixed to the upper end surface of the rotation shaft 230 by the hinge 305, the other end of the braking piece 309 is hooked to the wedge groove 303a of the wedge 303 It is formed, the torsion spring 307 is provided to give a shot to one side of the braking piece 309 is provided.

At this time, the braking piece 309 is hung on one inclined surface 303b of the wedge portion 303, and comes out of the inclined surface 303b while receiving the force of the torsion spring 307 during the forward rotation of the rotation shaft 230. By repeating the operation into the wedge portion 303 will be made without rotation. On the contrary, in the reverse rotation, the braking piece 309 is not affected by the wedge portion 303 without any influence, and the braking piece 309 is no longer rotated.

Figure 6 is a longitudinal cross-sectional view showing a coupling state of the one-way clutch and the rotating shaft of the third embodiment of the present invention, the one-way clutch 250 is inclined in one direction to the inner circumferential surface and extends round inward, each inner end is It is composed of a friction member 401 having a plurality of inclined protrusions 403 in contact with the outer circumferential surface of the rotating shaft 230.

Thus, when the rotation shaft 230 is rotated forward, the rotation shaft 230 is smoothly rotated smoothly to rotate in the inclined direction of the inclined protrusion 403, but in the reverse rotation, the rotation shaft 230 is inclined in the inclined protrusion 403 Since the inclined protrusion 403 rotates in the reverse direction, the friction force is applied.

Figure 7a is a front view showing a state of coupling of the one-way clutch and the rotating shaft of the fourth embodiment of the present invention, Figure 7b is a front view showing the operation of the one-way clutch of Figure 7a, respectively, the one-way clutch 250 ) Is fixedly fixed to the rotation shaft 230, and the fixing clutch 507 is formed on the outer circumference of the upper surface of the one-way gear teeth 507a. In addition, a movable clutch 505 is axially coupled to the pivot shaft 230 and has a one-way gear tooth 505a engaged with the gear tooth 507a on its outer circumference.

Also provided with a ball spring 503 is axially coupled to the rotating shaft 231 to cause the movable clutch 505 to be shot downward.

Accordingly, when the rotation shaft 230 rotates forward, as shown in FIG. 7B, the gear tooth 505a receives the elasticity of the ball spring 503 upward while riding on the inclined surface of the gear tooth 507a of the fixed clutch 507. Pushed upward to the rotation of the rotating shaft 230 is possible.

In addition, as shown in FIG. 7A, when the rotation shaft 230 reversely rotates, the gear teeth 505a and 507a are engaged with each other so that the rotation of the rotation shaft 230 is controlled.

8 is a partial cross-sectional view showing a hinge of the fifth embodiment of the present invention, wherein the one-way clutch 250 is a spring holder in which the pivot shaft 230 is mounted in the housing 211 of the door pivot member 210. An upper end portion 653 is provided and accommodated in an accommodating portion 653a formed at a lower portion of the spring holder 653, and an upper end portion bent outward in an engaging groove 653b formed in an outer wall of the accommodating portion 653a. A coil spring 655 is provided to which 655a is hooked.

As a result, the door pivot member 210 is caught by an upper end portion 655a of the coil spring 655 by a locking groove 653b formed in the spring holder 653, thereby reducing frictional resistance to the shaft when the door pivot member 210 is rotated. It will act as a one-way clutch to crack down on.

9 is a partial cross-sectional view showing a hinge of the sixth embodiment of the present invention, wherein the rotary braking member 260 is mounted such that the rotation shaft 231 penetrates through the housing 221 of the door frame fixing member 220. Receiving portions 753a and 754a are formed on the upper and lower inner circumferential surfaces, and spring holders 753 having locking grooves 753b and 754b are provided on the outer walls of the receiving portions 753a and 754a.

The upper and lower receiving portions 753a and 754a receive lower and upper portions, respectively, and the coil springs on which the lower end and the upper end portions 755a and 756a are bent outwardly in the engaging grooves 753b and 754b, respectively. 755 and 756 are provided.

Here, each of the coil springs 755 and 756 is wound to one side, but the winding directions thereof are differently formed. This is to maintain the balance of the coil springs (755, 756) hanging on the spring holder (753).

Referring to Figures 2 to 3 the effect of the hinge having a damper function according to the present invention configured as described above is as follows.

First, when the door is opened, the door rotating member 201 rotates without any friction. On the contrary, when the door is closed, the door rotating member 201 gradually operates while canceling the frictional resistance of the rotating shaft 230 by the operation of the rotary braking member 260. .

The rotary braking member 260 has a lower end portion 255a bent at the lower end of the coil spring 255 in a state of being caught by the locking groove 254b of the spring holder 254, and the one-way clutch 250 When the door rotating member 210 coupled to the rotating shaft 230 is rotated in the direction in which the door is closed, the coil spring 255 caught by the spring holder 254 is released in the opposite direction of the winding To work. At this time, the coil spring 255 is maintained in a state that the surface contact is separated slightly from the rotating shaft 230.

Therefore, the door pivot member 210 is rotated because the coil spring 255 does not receive the interference in a state slightly separated from the pivot shaft 230.

On the contrary, if the door rotating member 210 rotates in the direction of opening the door, the door rotating member 210 moves in the same direction as the winding direction of the coil spring 255, so that the coil spring 255 rotates. The state of being in close contact with the 230 is maintained in a state in which the rotating shaft 230 is fixed, and only the one-way clutch 250 of the door rotating member 210 is rotated to take an operation of opening the door.

Thus, by the damper operation according to the one-way clutch and the rotary braking member, the door is easily opened when the door is opened, and when the door is closed, the door is prevented from being suddenly closed, thereby reducing noise due to impact.

In addition, a damper hinge is installed on the door, and one of the hinges installed on at least three places of the door frame and the door has a torsion force accumulated therein as the door is opened, and the spring automatically closes the door. A hinge (not shown) having a logger is installed and used together. Accordingly, the damper hinge of the present invention serves to slowly close the door while constantly reducing the elastic restoring force of the spring closure.

The present invention as described above is not limited to the above embodiment, and can be modified as much as possible within the technical idea of the present invention.

As described above, the hinge having the damper function of the present invention is provided with a rotary braking member connected to the one-way clutch which operates in one direction inside the hinge, so that the door is closed slowly, and thus smooth operation can be performed. It is possible to reduce the manufacturing cost burden by simplifying the damper device.

Claims (9)

The door rotating member 210 having the door fixing bracket 212 formed on one side of the cylindrical housing 211, the door frame fixing member 220 having the door frame fixing bracket 222 formed on the cylindrical housing 221, and up and down. In a hinge provided with a rotating shaft 230 is inserted into the hollow portion of the housing 211, 221 coupled and a damper device coupled to the rotating shaft 230 to brake the opening and closing of the door: The damper device, One-way clutch 250 mounted to penetrate the pivot shaft 230 coupled to the inner bottom of the housing 211 of the door pivot member 210, and rotates only in the direction in which the pivot shaft 230 is closed when the door is closed. )Wow; It is coupled to the rotating shaft 230 in the middle of the housing 221 of the door frame fixing member 220, and comprises a rotary braking member 260 for braking the rotation of the rotating shaft 230 when the door is closed A hinge having a damper function, characterized in that. The method of claim 1, wherein the one-way clutch 250, Bearing housing 251; A plurality of accommodating grooves 251a formed on the inner circumferential surface of the bearing housing 251 at regular intervals; A plurality of roller bearings 252 mounted vertically to the receiving grooves 251a; Hinge having a damper function, characterized in that it is mounted in each end of the receiving groove (251a) is composed of a leaf spring (253) to force the roller bearing (252) to the other end side. The method of claim 1, wherein the one-way clutch 250, A plurality of wedge grooves 303a are formed around the inner circumferential surface of the pivot shaft support bush 243 that is axially coupled to the upper end of the door pivot member 210, and the inclined surface 303b is formed in the wedge grooves 303a. Wedge portion 303; A braking piece 309, one end of which is fixed to the upper end surface of the pivot shaft 230 by a hinge 305, the other end of which is engaged with the wedge groove 303a; Hinge having a damper function, characterized in that composed of a torsion spring (307) which is laid to give the braking piece (309) to one side. The method of claim 1, wherein the one-way clutch 250, It has a damper function, characterized in that it extends round inclined in one direction to the inner circumferential surface, each inner end is composed of a friction member 401 formed with a plurality of inclined protrusions 403 to be in contact with the outer circumferential surface of the pivot shaft 230. hinge. The method of claim 1, wherein the one-way clutch 250, A fixed clutch 507 fixedly fixed to the rotation shaft 230 and having a one-way gear tooth 507a rounded around an upper surface thereof; A movable clutch 505 axially coupled to the pivot shaft 230 and having a one-way gear tooth 505a engaged with the gear tooth 507a on an outer circumference of the lower surface thereof; Hinge having a damper function, characterized in that consisting of a ball spring (503) axially coupled to the rotating shaft 230 to give the movable clutch (505) downwardly. The method of claim 1, wherein the one-way clutch 250, A spring holder 653 mounted through the pivot shaft 230 coupled to the housing 211 of the door pivot member 210; Coil springs are accommodated in the accommodating part 653a formed in the lower part of the spring holder 653, and the upper end part 655a bent outwardly is extended to the engaging groove 653b formed in the outer wall of the accommodating part 653a. 655) a hinge having a damper function, characterized in that consisting of. The method of claim 1, wherein the rotary braking member 260, A coil spring 255 mounted in the middle of the housing 221 of the door frame fixing member 220 to be coupled to the pivot shaft 230 and having a lower end portion 255a bent outwardly; An accommodating part 254a for accommodating a lower portion of the coil spring 255 is formed on an inner circumferential surface thereof, and a locking groove for hanging the lower end part 255a of the coil spring 255 extended to an outer wall of the accommodating part 254a ( Hinge having a damper function, characterized in that it comprises a spring holder (254) formed 254b). The method of claim 1, wherein the rotary braking member 260, The housing 221 of the door frame fixing member 220 is mounted to be coupled to the rotating shaft 231, the receiving portion (753a) (754a) is formed on the upper and lower inner circumferential surface of the receiving portion (753a) (754a) A spring holder 753 formed with engaging grooves 753b and 754b on each outer wall; Lower and upper portions are respectively accommodated in the upper and lower receiving portions 753a and 754a, and the lower and upper portions 755a and 756a which are bent outwardly in the engaging grooves 753b and 754b are respectively hooked with the coil springs ( 755) 756, a hinge having a damper function, characterized in that consisting of. The method of claim 7 or 8, wherein the coil spring 255, Hinge having a damper function, characterized in that the inner diameter is formed smaller than the diameter of the rotating shaft (230).