KR20170108482A

KR20170108482A - door hinge

Info

Publication number: KR20170108482A
Application number: KR1020160032459A
Authority: KR
Inventors: 이준영
Original assignee: 서원코리아 주식회사
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2017-09-27
Also published as: KR101870020B1

Abstract

The present invention relates to a door hinge which reduces a closing speed of a door just before the door is closed to reduce an impact and noise produced while the door is closed. The door hinge comprises: a fixed member fixed and installed on a door frame; an operating member installed on a door and coupled to a connection part fixed and installed on the fixed member by a hinge shaft to rotate around the hinge shaft and open and close the door; and an operating frame which is installed in the operating member, slides and moves by opening and closing operations of the door, and stabilizes the opening and closing operations of the door. The door hinge further comprises: a damper operating cam positioned in the operating member, wherein one end thereof is hinged and coupled to the operating member; a block disposed on the other end of the damper operating cam, wherein a lower surface thereof is lifted while coming in contact with a protruding part formed on an outer surface of the connection part and eccentrically rotates the damper operating cam about the hinge; and a damper means which is fixed and installed on an outer surface of the operating member, has a rod disposed on a lower end thereof to selectively come in contact with an upper surface of the block, and includes a damper cylinder to generate resistance while the rod is pushed by an ascending operation of the block to reduce a closing speed of the door.

Description

Door hinge < RTI ID = 0.0 >

The present invention relates to a door hinge, and more particularly, to a door hinge comprising damper means for implementing a shock-absorbing function on a door hinge so as to attenuate the closing speed of the door immediately before the door is closed, To a door hinge capable of relieving shock and noise.

As is well known, a door hinge is a device designed to enable a door to perform an opening and closing operation on a door frame. Such a door hinge is configured such that the door can be opened and closed in a left and right door manner starting from one side, And is configured to be opened and closed in an upward and downward sliding manner (that is, in a manner of lying down on the front side and approaching and retracting) based on the upper end.

In the meantime, the latter door hinge is used in a door of a gas oven range or a microwave oven, which is a home appliance, and the conventional structure of such a door hinge is shown in FIG. 1 attached hereto.

The conventional door hinge 250 includes a fixing table 210 installed on the door frame 100 and a hinge 226 fixed to the door 200 and coupled to the fixing table 210 by a hinge 226, And an operating rod 212 which rotates around the door 200 and opens and closes the door 200.

Meanwhile, a guide means 214 for guiding the opening and closing operation of the door 200 is provided between the fixing table 210 and the operation table 212.

The guide means 214 includes a coupling plate 216 installed on the fixing table 210 and a rotary plate 220 coupled to the coupling plate 216 by a pin 218 and rotating about the pin 218, And a guide pin 224 which is coupled to the tip of the rotary plate 220 and moves upward and downward along a guide hole 222 formed on both sides of the operation table 212.

The guiding means 214 having the above-described configuration is configured such that the guide pin 224 is vertically moved downward along the guide hole 222 when the operation pedestal 212 is rotated and at the same time is fastened to the guide pin 224 The rotary plate 218 rotates about the pin 218 in accordance with the movement of the guide pin 224 and guides the rotation of the operation table 212. Accordingly, the door 200 performs a stable opening operation .

Meanwhile, the door hinge is provided with a spring, the spring elastically supports the opening operation of the door, and also generates a compressive force in a start section in which the door is closed during the closing operation of the opened door, And also slows the rotation speed of the door so that the closing of the door can be performed slowly.

However, in the case where the spring has a limited compressive force, when the load is to be supported by only one spring as in the prior art, when the door is closed, the door is closed and a larger compressive force So that the rotational speed of the door can not be effectively slowed down.

As a result of these drawbacks, when the door is closed at a rapid pace for closing the door, the door is suddenly closed and the door is damaged, resulting in various safety accidents and damage to various electronic parts due to shock transmitted to the device. The problem of shortening, as well as the noise generated in the process of putting it, causes a lot of inconvenience to use.

Document 1: Registered Utility Model Registration No. 20-0428124 (Registered on September 28, 2006)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a door hinge for a door, And a door hinge for relieving impact and noise generated when the door is closed.

According to an aspect of the present invention, there is provided a door device comprising: a fixing member fixedly installed on a door frame; a connection unit fixed to the fixing member and installed on a door, the door being coupled with a hinge shaft, And an operation frame installed inside the operation member and slidably moving according to an opening and closing operation of the door and stably performing opening and closing operations of the door, A damper operation cam which is located inside the operation member and has one end hinged to the operation member, and a damper operation cam which is provided at the other end of the damper operation cam and whose lower surface is in contact with a guide curved surface formed on the outer surface of the linkage A block for eccentrically rotating the damper operation cam from the hinge, And a lower end of the rod is provided with a rod which is in contact with the upper surface of the block so as to selectively contact with the upper surface of the block, thereby generating a resistance force in the process of pushing the rod according to the lifting operation of the block, thereby attenuating the closing speed of the door And damper means constituted by a damper cylinder for allowing the damper to rotate.

In addition, the present invention provides a door locking device comprising: a fixing member fixedly installed on a door frame; a connection unit, which is installed on the door and fixed to the fixing member, connected to the hinge shaft, rotates around the hinge shaft, And an operation frame which is installed inside the operation member and slidably moves in accordance with the opening and closing operation of the door and stably performs the opening and closing operations of the door. In the door hinge, A damper operation cam hinged to one end of the damper operation cam, the damper operation cam being installed at a lower end of the damper operation cam and contacting a guide curved surface protruding from an outer surface of the damper, A roller for eccentrically rotating the hinge, And a rod that is fixed to the outer surface of the actuating member and selectively contacts the pressing piece is provided at the lower end of the pressing piece, And damper means for damaging the closing speed of the door by generating a resistance force in the course of the rod being pushed down.

The door hinge is provided with a damper means for implementing a damping function so as to attenuate the closing speed of the door immediately before the door is closed so as to alleviate impact and noise generated in closing the door, Thereby extending the service life of the apparatus and enhancing usability through noise reduction.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a configuration of a conventional door hinge.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door hinge.
3 is a cross-sectional view of the door hinge shown in Fig. 2; Fig.
Fig. 4 is a view showing a state in which the door is opened by 90 degrees in the door hinge of Fig. 3; Fig.
Fig. 5 is a view showing a state immediately before the door shown in Fig. 4 is closed; Fig.
6 is a view showing a configuration of a door hinge according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following detailed description, exemplary embodiments of the present invention will be described in order to accomplish the above-mentioned technical problems. And other embodiments which may be presented by the present invention are replaced by descriptions in the constitution of the present invention.

In the present invention, the damper means for implementing the damping function is mounted on the door hinge, so that the guide roller of the damper operation cam contacts the protruding jaw formed on the guide curved surface in the process of passing over the guide curved surface of the damper operating cam, The damper operation cam eccentrically rotates and presses the rod of the damper cylinder to generate a resistance force so as to attenuate the closing speed of the door immediately before the door is closed so that the shock and noise generated in closing the door So that the door hinge can be relieved.

Hereinafter, the structure of the door hinge according to the present invention will be described with reference to one embodiment. However, since the embodiments described below describe the best mode for carrying out the features and technical ideas of the present invention, The present invention is not limited by the following examples.

{Example 1}

FIG. 2 is a cross-sectional view of a door hinge according to a preferred embodiment of the present invention, and FIG. 3 is a cross-sectional view of the door hinge shown in FIG.

As shown in FIGS. 2 and 3, the door hinge according to the present invention allows the door 100 to be opened and closed in an upward and downward sliding manner (that is, The door 100 is provided with a fixing member 10 mounted on a door frame 200 and connected to the fixing member 10 by a connecting rod 12, And an operating member (12).

Among the components, the operating member 20 is coupled to the connecting rod 12 fixed to the fixing member 10 with the hinge shaft 24 mounted on the door 100, and the hinge shaft 24 So that the door 100 can be opened and closed.

A link means 30 is provided in the internal space 22 of the operating member 20 to stably perform the opening operation of the door 100.

The link means 30 comprises an actuating frame 32, a rod 38 and a spring 40.

The actuating frame 32 is located in the internal space 22 of the actuating member 20. One end of the actuating frame 32 is connected to the connecting rod 12 by a pin 34, When the operation member 20 is rotated with the hinge shaft 24 as a starting point, when the operation member 20 is rotated together with the operation member 20, And pulls the rod 38 to compress the spring 40 that fits into the outer diameter of the rod 38.

A rod 38 is coupled to the other end of the actuating frame 32 and the rod 38 is operated by the operation of sliding the actuating frame 32 by the opening operation of the door 100, And is pulled in the advancing direction of the frame 32.

When the rod 38 is pulled or pushed by the opening and closing operation of the door 100 in a state where it is fitted to the outer diameter of the rod 38, the spring 40 exerts a tensile force, The tension force of the spring 40 at this time acts as a force to elastically support the opening operation of the door 100 as a result.

When the door 100 is opened through the link means 30 having the above structure, the operation member 20 installed on the door 100 rotates together. At this time, the operation member 20 The operation frame 32 installed in the inner space 22 of the door 100 is slidingly moved and pulls the rod 38 to exert the tension force of the spring 40 to thereby elastically support the opening operation of the door 100 .

On the other hand, the operating member 20 is provided with a damper means 50. The damper means 50 is operated in a predetermined interval immediately before the door 100 is closed at the time of closing the door 100, that is, at an angle between 0 ° and 20 ° immediately before the door closes, Thereby reducing the impact and noise generated in the process of closing the door 100.

The damper means (50) mainly comprises a damper operation cam (52) and a damper cylinder (60).

One end of the damper operation cam 52 is coupled to a hinge 54 of the operation member 20 and a block 56 is provided at the other end of the damper operation cam 52. [ do. The lower surface of the block 56 is in contact with the guide curved surface 14 formed on the outer surface of the connecting rod 12 and is rotated in the rotating operation of the operating member 20 according to the opening operation of the door 100. [ And travels on the guide curved surface 14. The guide curved surface 14 of the linkage 12 is pushed in accordance with the shape of the guide curved surface 14 in the process of contacting the lower surface of the block 56 and the damper operation cam 52 is started from the hinge 54 Eccentric rotation operation is performed.

The upper surface of the block 56 presses the rod 64 provided in the damper cylinder 60 during the eccentric rotation of the damper operation cam 52 about the hinge 54, (60) to generate a resistance force capable of slowing the rotation speed of the door (100).

As described above, the damper cylinder 60 is a member that generates a resistance force that slows down the rotation speed of the door 100 in accordance with the eccentric rotation operation of the damper operation cam 52, As shown in Fig. A cushioning member 62 is provided in the damper cylinder 60 and one end of the rod 64 contacts the cushioning member 62 and the other end of the rod 64 contacts the end of the damper cylinder 60 And is selectively brought into contact with the upper surface 56a of the block 56 of the damper operation cam 52 in the state of being exposed to the outside.

When the damper cylinder 60 is eccentrically rotated from the hinge 54 and the upper surface of the block 56 presses the rod 64, The resistance against the jumping operation acts on the lower surface 56b of the damper operation cam 52 so that the lower surface of the block 56 is connected to the connecting rod The door 100 is gradually reduced from the angle of 0 ° to 20 ° immediately before the closing of the door 100 so that the door 100 is gradually closed. The impact and the noise generated in the closing process of the door can be alleviated.

Hereinafter, the operation of the door hinge according to the present invention will be described with reference to FIGS. 4 to 5 attached hereto.

4 and 5, when the door 100 is closed, when the door 100 is pushed and held by the door handle (not shown), the operation member 20 Is pivoted about the hinge shaft 24 and closes the door 100.

At this time, during the closing operation of the door 100, the operation frame 32 mounted on the operation member 20 is pushed to perform a sliding movement operation. At this time, The rod 38 is also pushed and the closing action of the door 100 can be stably achieved by using the tension force of the spring 40 fitted to the outer diameter.

On the other hand, when the door 100 is closed and the door 100 is completely closed, the damper means 50 operates to attenuate the closing speed of the door 100, The shock and noise generated in the process of closing the door 100 are mitigated.

The lower surface 56b of the block 56 provided at the other end of the damper operation cam 52 is positioned on the outer surface of the connecting rod 12 The block 56 is lifted up and the damper actuating cam 52 is operated to rotate eccentrically from the hinge 54. In this case,

At the same time, the upper surface of the block 56 presses the rod 64 provided in the damper cylinder 60 in accordance with the eccentric rotation of the damper operation cam 52, Is gradually pushed by the buffering force of the cushioning member (62) installed in the cylinder (60) in the process of being pushed into the damper cylinder (60), and resistance is generated to resist the block (56) The lower surface of the door 56 acts as a force for gradually moving on the guide curved surface 14 of the connecting rod 12 and after the closing of the door 100 enters between 0 and 20 degrees, So that the shock and noise generated in the closing process are mitigated.

6 is a view showing the structure of a damper means according to another embodiment of the present invention.

6, the damper means according to another embodiment of the present invention does not use the block 56 at the other end of the damper operation cam, and the roller 156 is provided on the other end surface of the damper operation cam 52 , And a pressing piece (158) is provided on the upper surface of the other end of the damper operation cam (52).

The roller 156 of the damper operation cam 152 is rotated by the rotation of the operation member 20 in accordance with the opening operation of the door 100 in a state of being in contact with the guide curved surface 14 formed on the outer surface of the connecting rod 12 And moves along the guide curved surface 14 in operation. The damper operation cam 52 is pushed in accordance with the shape of the guide curved surface 14 while the roller 156 contacts the curved guide surface 14 of the link 12, .

A pressing piece 158 is provided on the upper surface of the other end of the damper operation cam 52. The pressing piece 158 is raised when the damper operation cam 52 eccentrically rotates about the hinge 54 And presses the rod 64 provided on the damper cylinder 60 so that the damper cylinder 60 generates a resistance force to slow down the rotation speed of the door 100.

The damper cylinder 60 has the same structure as that of the above-described embodiment, that is, one end of a rod 64, which is provided with a buffer member 62 inside and has a draw- And the other end is selectively in contact with the pressing piece 158 of the damper operation cam 52).

That is, when the roller 156 of the damper operation cam 52 is pushed in accordance with the shape of the guide curved surface 14 of the linkage 12 to cause the damper operation cam 52 to eccentrically rotate, the pushing piece 158 is moved to the damper cylinder The load 64 is gradually pushed by the buffering force of the cushioning member 62 in the process of being pushed and the roller 156 of the damper operation cam 52 is pushed by the connecting rod The door 100 is gradually damped from an angle of 0 ° to 20 ° to gradually reduce the impact and noise generated during the closing process of the door 100 It can be mitigated.

10: fixing member 12: connecting rod
14: guide surface 16: protrusion
20: operative member 50: damper means
52: damper operation cam 54: hinge
56: Block 60: Damper cylinder
64: Load

Claims

A fixing member 10 fixed to the door frame 200 and a connecting rod 12 installed on the door 100 and fixed to the fixing member 10 and connected to the hinge shaft 24, An operation member 20 which rotates about an axis 24 and which opens and closes the door 100 and an operation member 20 which is installed inside the operation member 20 and which opens and closes the door 100, And an operation frame (32) for moving the door (100) so that opening and closing operations of the door (100) can be stably performed. The door hinge
A damper operation cam (52) located inside the operation member (20) and having one end coupled to the hinge (24) to the operation member (20);
The damper operation cam 52 is provided at the other end of the damper operation cam 52 and the lower surface of the damper operation cam 52 is in contact with the guide curved surface 14 formed on the outer surface of the connecting rod 12, 54); a block (56) for eccentrically rotating operation;
A rod 64 fixed to the outer surface of the actuating member 20 and selectively contacting the upper surface of the block 56 is provided at a lower end of the rod 56 so that the rod 64 And a damper cylinder (60) configured to generate a resistance force in a process of being pushed down to reduce the closing speed of the door (100).

The hinge shaft 24 is coupled to the door 100 through a fixing member 10 fixed to the door frame 200 and a hinge shaft 24 fixed to the door 100 and fixed to the fixing member 10, An operating member 20 which rotates around the door 100 and opens and closes the door 100 and an operating member 20 which is installed inside the operating member 20 and slides according to opening and closing operations of the door 100, A door hinge including an operation frame for stably opening and closing the door (100)
A damper operation cam (52) located inside the operation member (20) and having one end coupled to the hinge (54) to the operation member (20);
And the damper operation cam 52 is supported by the hinge 54. The damper operation cam 52 is installed at the other end of the damper operation cam 52 and is in contact with the guide curved surface 14 protruding from the outer surface of the link 12, A roller 156 that eccentrically rotates the roller 156;
A pushing piece 158 installed on the upper surface of the other end of the damper operation cam 52 and lifted up according to eccentric rotation of the damper operation cam 152;
A rod 64 fixed to the outer surface of the operation member 20 and selectively in contact with the pushing piece 158 is provided at a lower end of the rod 64 so that the rod 64 And a damper cylinder (60) configured to generate a resistance force in a process of being pushed down to reduce the closing speed of the door (100).