KR102013025B1 - Door hinge - Google Patents

Abstract

The present invention is an arm fixed to the door frame, is installed on the door and coupled to the arm and the hinge axis, the housing pivoting around the hinge axis, fitted into the inner space of the housing and the end is connected to the link link axis And a link which is pulled down or pushed up through the link shaft according to the rotational movement of the housing, a spring lever connected to the tip of the link by a pin, and fitted into an outer diameter of the spring lever, A spring supporting elasticity, a damper fitted into an inner space of the link, a damper cover installed at a lower end of the damper, and a pin coupled to the damper cover and in contact with an outer side of the arm, according to the closing operation of the door. A roller moving along the outer edge of the arm and pushing up the damper cover to generate a resistance of the damper, The damper case is installed on the upper end of the damper, protrudes on the upper end of one side of the damper case and is caught by a locking pin installed inside the housing in the process of moving up the link by closing the door to stop the damper case. To provide a door hinge, characterized in that comprising a projection for generating a resistance of the damper.

Description

Door hinge {DOOR HINGE}

The present invention relates to a door hinge, and more particularly, to a door hinge that allows a stable opening and closing operation of the door by slowing the opening and closing speed of the door immediately before the door is closed and in a section where the door starts to open.

As is well known, the door hinge is a device designed to perform the opening and closing operation on the door frame, the door hinge is configured so that the door can be opened and closed in the left and right opening and closing manner from one side, It is divided into one that can be opened and closed from the top and bottom by opening and closing (that is, the front and the way out).

Meanwhile, the latter door hinge is used for a door of a gas oven or a microwave oven which is a home appliance, and a conventional configuration of such a door hinge is shown in FIG. 1.

As shown, the conventional door hinge 250 is fixed to the door 210 is installed on the door frame 100, is installed on the door 200 and the hinge 210 and the hinge 226 is fastened to the hinge 226 Rotating around the center and comprises a working table (212) for opening and closing the door (200).

On the other hand, between the fixing table 210 and the operating table 212 is provided with a guide means 214 for guiding the opening and closing operation of the door 200.

The guide means 214 is connected to the connecting plate 216 is installed on the fixing table 210, the connecting plate 216 and the pin 218 is rotated around the pin 218 and the rotating plate 220 and The guide pin 224 is coupled to the front end of the pivoting plate 220 and moves up and down in the guide holes 222 formed on both sides of the operating table 212.

When the guide means 214 having the above-described configuration rotates the operating table 212, the guide pin 224 moves vertically downward through the guide hole 222, and at the same time is fastened to the guide pin 224. Rotating plate 218 is rotated about the pin 218 in accordance with the movement of the guide pin 224 to guide the rotation of the operating table 212, and thus the door 200 to perform a stable opening operation It becomes possible.

On the other hand, the door hinge is provided with a spring, the spring elastically supports the opening operation of the door, as well as during the closing operation of the open door, generates a compressive force in the start section in which the closing operation of the door door It also performs a function to slow down the rotation speed of the door so that the closing of the door can be made slowly.

However, the compressive force of the spring is limited, therefore, when the spring is configured to support the load of the door with only one spring, the compressive force is larger enough to support the load of the door when it enters the progress section where the closing operation of the door continues. There is a disadvantage that can not effectively reduce the rotational speed of the door as it can not generate.

Through these shortcomings, the door closes at a rapid speed and is attached to the device when the door is closed in order to close the door, which causes various safety accidents and damages to various electronic parts due to the shock delivered to the device, thereby extending the service life of the device. In addition to the shortening problem, the noise generated in the process of the process brings a lot of inconvenience to use.

On the other hand, the prior art for solving this problem may be exemplified by Korean Patent Application Publication No. 10-2010-0055110 (name: door hinge) (hereinafter referred to as prior art).

The prior art is configured to damp the closing speed of the door by mounting a damper means in the door hinge.

However, in the prior art, the damper means continuously resists the damping means and attenuates the closing speed of the door while the door frame mounted on the door directly attaches to the damper means. There is a problem in that the damper means are often damaged without overcoming the impact, requiring unnecessary maintenance.

Moreover, as the impact is transmitted to the entire product installed with the door frame when the door is closed, the compression force of the damper must be amplified just before the door is closed, but conventionally the compression force of the damper cannot be increased or decreased depending on the situation. There is a disadvantage in that the shock due to the closing cannot be effectively absorbed.

Document 1: Registered Utility Model Registration No. 20-0428124 of the Korean Intellectual Property Office Document 2: Korean Patent Office Publication No. 10-2010-0055110

Accordingly, an object of the present invention for solving the above problems is that the damping force of the damper acts immediately before the door is closed and immediately before the door is closed, thereby slowing the rotational speed of the door, thereby stably opening and closing the door. It is to provide a door hinge to facilitate the operation.

Another technical problem to be achieved by the present invention is that the compression force of the damper acts by the pressing pressure of the lower cover acting on the lower end of the damper immediately before the opening operation of the door, and immediately before the closing operation of the door, The upper hinge acting on the lower cover provides a door hinge that allows the compressive force of the damper to act by the pressing pressure of the lower cover.

The present invention for achieving the above object, in the door hinge, an arm fixed to the door frame, the housing is installed on the door and coupled to the hinge shaft, the housing rotates around the hinge shaft, the inner space of the housing The end is connected to the link axis to the arm is connected to the link to perform the operation to be pulled down or pushed up through the link shaft in accordance with the rotational movement of the housing, a spring lever connected to the tip of the link with a pin, A spring fitted to an outer diameter of a spring lever and elastically supporting the operation of the link, a damper fitted into an inner space of the link, a damper cover installed at a lower end of the damper, and a pin coupled to the damper cover, The damper cover is moved along the outer periphery of the arm according to the closing operation of the door in a contact state. A roller for generating a resistance of the damper by pushing up, a damper case installed on the upper end of the damper, protrudes on the upper end of one side of the damper case, and is installed inside the housing in a process in which the link is moved upward by the closing operation of the door. It is characterized in that it comprises a projection that is caught by the engaging pin is to generate the resistance of the damper by stopping the damper case.

It is preferable to form guide grooves for moving the pins on both inner walls of the housing, and a locking step for stopping the movement of the pins is formed at the lower end of the guide grooves.

The present invention has the effect of reducing the rotational speed of the door to achieve a stable opening and closing operation of the door by the compression force of the damper immediately before the end of the door closing operation and just before the opening operation of the door.

In addition, the present invention is the resistance of the damper according to the operation of one pin of the damper cover immediately before the opening operation of the door is generated, on the contrary, just before the closing operation of the door, the two rollers of the damper cover and the protrusions of the damper case By generating the resistance of the damper according to the simultaneous operation of the branch, the resistance of the damper in the closing operation of the door that can deliver the most shock to the product has an effect that can achieve a stable closing operation of the door.

1 is a view showing the configuration of a conventional general door hinge.
2 is a view showing in three dimensions the configuration of the door hinge according to an embodiment of the present invention.
3 is a cross-sectional view of the door hinge shown in FIG.
FIG. 4 shows the door hinge side of FIG. 3. FIG.
5 is a view showing an operating state immediately before the door is opened through the door hinge according to the present invention.
Figure 6 is an enlarged view of the main configuration of FIG.
7 is a view showing an operating state just before the door is closed through the door hinge according to the present invention.
8 is an enlarged view of the main configuration of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description will be presented a representative embodiment in the present invention to achieve the above technical problem. And other embodiments that can be presented with the present invention are replaced by the description in the configuration of the present invention.

2 is a view showing in three dimensions the configuration of the door hinge according to a preferred embodiment of the present invention, Figure 3 is a view showing a cross section of the door hinge shown in Figure 2, Figure 4 is a It is a figure which shows the use state of a damper means.

As shown in Figures 2 to 4, the door hinge of the present invention to open and close the door 100 is opened and closed in a manner of opening and closing (i.e., plunged forward and outward) starting from the top. As installed in the home appliance, it is divided into an arm 10 mounted on the door frame 200 and a housing 20 mounted on the door 100 and rotatably connected to the arm 10.

Among the components, the housing 20 is coupled to the arm 10 and the hinge shaft 22 in a state in which the housing 20 is mounted on the door 100, and rotates about the hinge shaft 22 and the door 100. ) Is a means for supporting the opening and closing.

Guide means 30 is installed in the inner space of the housing 20 to stably open the door 100.

The guide means 30 is composed of a link 32, a spring lever 36 and a spring 40.

The end of the link 32 is connected to the arm 10 by a link shaft 34 and the tip thereof is connected to the end of the spring lever 36 by a pin 38, so that the housing 20 is hinged. In the process of rotating around the (22) to perform the operation to be pulled down or pushed up through the link shaft 34.

The spring lever 36 is connected to the tip of the link 32 by a pin 38 to pull down and push up together with the link 32.

The spring 40 is in contact with the outer diameter of the spring lever 36, the end is in contact with the upper end of the housing 20, the front end is in contact with the engaging jaw of the spring lever 36 and the spring lever 36 Compressive force is exerted according to the pulling operation of the spring, and elastically supporting the opening and closing operation of the door 100 through the compression force of the spring 40.

On the other hand, a damper means 50 is installed inside the link 32. The damper means 50 is a compression force of the damper 52 is applied immediately before the closing operation of the door 100 and just before the opening operation of the door 100 to slow down the rotational speed of the door 100 according to the impact It is possible to achieve stable opening and closing operations of the door 100 by reducing noise, and in particular, the door 100 which may cause the most damage of the product due to the direct impact between the door 100 and the door frame 200. Just before the end of the closing operation is characterized in that the buffering force of the damper means 50 can be varied so that the buffering force of the damper means 50 acts more.

The damper means 50 is composed of a damper 52, a damper cover 60 and a damper case 70.

The damper 52 includes a cylinder 54 in which fluid is filled therein, and a piston rod 56 having one end inserted into the cylinder 54 and the other end exposed to the outside. When the damper 52 acts as an external force acting on the cylinder 54 or the piston rod 56, the resistance force of the fluid filled in the cylinder 54 acts, resulting in a slowing of the rotational speed of the door 100. It works by force.

The damper cover 60 is located at the lower end of the damper 52 and is raised just before the closing operation of the door 100 and just before the opening operation of the door 100 ends, thereby causing the cylinder 54 of the damper 52 to be closed. It is a member that pushes up to generate resistance.

The damper cover 60 has a recessed recess 61 formed therein for the damper 52 to be fitted in the upper end thereof, and a roller 62 is coupled to the pin 64 at the lower end thereof.

The roller 62 generates resistance of the damper 52 according to the closing operation of the door 100, and the pin 64 generates resistance of the damper 52 according to the opening operation of the door 100.

First, the roller 62 is in contact with one side 12 of the arm 10 just before the closing operation of the door 100 is completed, as shown in FIGS. 7 and 8. The cylinder of the damper 52 connected to the damper cover 60 by raising the damper cover 60 in the process of moving along the outer surface 12 of the arm 10 and located on the upper surface of the outer surface 12 of the arm 10. 54) to raise the resistance.

The pin 64 is a member for fixing the roller 62 to the damper cover 60, and both ends of the pin 664 pass through the long hole 33 formed at both sides of the link 32. In one state, the guide groove 24 is formed on both inner walls of the housing 20 which accommodates the link 32.

The pin 64 is lowered in the guide groove 24 of the housing 20 immediately before the opening operation of the door 100 is completed, as shown in FIGS. 5 and 6, and then the guide groove 24. The lower stepped portion 26 is caught, and thus the damper cover 60 to which the pin 64 is coupled is no longer lowered even when the link 32 is pulled down, but is caught by the pin 64. By maintaining the state, as a result, the cylinder 54 of the damper 52 is pushed up, thereby generating a resistance force.

The damper case 70 is positioned at the upper end of the damper 52 and descends immediately before the closing operation of the door 100 is completed. The damper case 70 presses the piston rod 56 of the damper 52 to generate a resistance force.

The damper case 70 has a space 71 for accommodating the damper 52 therein, and a protrusion 72 protrudes from one side of the upper end thereof.

The projection 72 of the damper case 70 is the damper case 70 together with the link 32 when the link 32 returns to the return force of the spring 40 by the closing operation of the door 100. ) Is caught by the catching jaw 28 formed in the housing 20 in the process of ascending, thereby limiting the rise of the damper case 70. When the rising of the damper case 70 is limited, the piston rod 56 of the damper 52 accommodated in the inner space 72 of the damper case 70 is disposed on the upper surface of the inner space 72 of the damper case 70. As it is pressed in accordance with the rising limit of the damper case 70 in the contacted state, as a result, a resistance force is generated such that a stable closing operation of the door 100 is performed immediately before the closing operation of the door 100 is completed.

That is, in the present invention, immediately before the opening operation of the door 100 is completed, the resistance force of the damper 52 according to the operation of one of the pins 64 of the damper cover 60 is generated and, on the contrary, the door 100 is closed. Immediately before the operation is completed, resistance of the damper 52 is generated due to the simultaneous operation of two rollers 62 of the damper cover 60 and the projections 72 of the damper case 70. In the closing operation of the door 100 that can be transmitted, the resistance of the damper 52 is further strengthened to achieve a stable closing operation of the door 100.

Hereinafter, the operation of the door hinge according to the present invention will be described with reference to FIGS. 5 to 8.

5 and 6 are views illustrating a door hinge operation state immediately before the opening operation of the door is completed.

As shown in FIGS. 5 and 6, both ends of the pin 64 of the damper cover 60 are lowered together with the link 32 while the door 100 is laid forward and the opening operation is performed. The guide groove 24 formed on both inner surfaces of the side 20 is moved, and immediately before the opening operation of the door 100 is completed, the pin 64 has a lower locking jaw of the guide groove 24 ( 26, so that the damper cover 60 is not lowered by the pin 64 but remains stationary even when the lowering operation of the link 32 proceeds, whereas the cylinder of the damper 52 As the 54 continues to descend with the link 52, the cylinder 54 of the damper 52 is naturally pressed and generates a resistance force just before the opening operation of the door 100 to stably open the door 100. do.

On the other hand, Figures 7 and 8 are views showing the door hinge operating state immediately before the closing operation of the door 100 is completed.

As shown in FIGS. 7 and 8, the roller 62 of the damper cover 60 is in contact with one side 12 of the arm 10 while the door 100 is erected rearward and the closing operation is performed. In the state just before the closing operation of the door 100 is completed, the damper cover 60 is raised while being pushed up in the process of being located on the outer surface 12 of the arm 10, thereby the damper cover ( The cylinder 54 of the damper 52 connected to 60 is pushed up to generate a resistance force.

At the same time, the projection 72 of the damper case 70 is caught by the catching jaw 26 formed in the housing 20 in the process of returning the link 32 up by the return force of the spring 40. The rise of the damper case 70 is limited, and thus, the piston rod 56 of the damper 52 accommodated in the inner space 71 of the damper case 70 has an inner space 71 of the damper case 70. In the state in contact with the upper surface is pressed in accordance with the rising limit of the damper case 70 generates a resistance force.

That is, the damper 52 generates resistance by the roller 62 of the damper cover 60 and the protrusion 72 of the damper case 70 just before the door 100 is erected to the rear and the closing operation is completed. The door 100 is stably closed.

10: arm 20: housing
30: guide means 32: link
36: spring lever 40: spring
50: damper means 52: damper
54: cylinder 56: piston rod
60: damper cover 62: roller
64: pin 70: damper case
72: turning

Claims (2)

For door hinges,
An arm 10 fixed to the door frame 200;
A housing 20 installed in the door 100 and coupled to the arm 10 and the hinge shaft 22 to rotate about the hinge shaft 22;
Fitted into the inner space of the housing 20 and the end is connected to the arm 10 by a link shaft 34 and the tip is connected to the end of the spring lever 36 by a pin 38, the housing 20 A link 32 for pulling down or being pushed up through the link shaft 34 in the course of rotating the hinge shaft 22 around the hinge shaft 22;
A spring (40) fitted to an outer diameter of the spring lever (36) connected to the tip of the link (32) by a pin (38) and elastically supporting the operation of the link (32);
A damper 52 fitted into an inner space of the link 32;
A damper cover (60) installed at a lower end of the damper (52);
A pin 64 is coupled to the damper cover 60 and moves along the outer side of the arm 10 according to the closing operation of the door 100 in a state of being in contact with an outer side of the arm 10. A roller (62) for pushing up the (60) to generate a resistance of the damper (52);
A damper case 70 installed at an upper end of the damper 52;
It protrudes on the upper end of one side of the damper case 70 and is caught by the locking step 28 installed in the housing 20 in the process of the link 32 being lifted up by the closing operation of the door 100. A projection (72) for stopping the damper case (70) to generate a resistive force of the damper (52);
Both ends of the pin 64 are configured to penetrate the long holes 33 formed on both sides of the link 32, and the long holes 33 are formed on both inner walls of the housing 20 that accommodate the link 32. Both ends of the pin (64) penetrating the through is formed to form a guide groove (24) for guiding the movement of the pin (64), the lower end of the guide groove (24) to move the pin (64) Configured to include a stopping jaw 26 for stopping;
The damper 52 is composed of a cylinder 54 filled with fluid therein, a piston rod 56 having one end inserted into the cylinder 54 and the other end exposed to the outside, and the damper 52 being The door hinge, characterized in that the closing force of the door is achieved by adding the resistance generated by the movement of the roller 62 and the resistance generated by the projection 72 is caught on the locking jaw 28 to achieve a stable closing operation of the door. .







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