KR950005600Y1 - Hinge for door - Google Patents

Abstract

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Description

Hinge for building door

1 is a perspective view of the present invention.

2 is a cross-sectional view of the buffer mechanism employed in the present invention.

3 is a cross-sectional view of the door closed state of the present invention.

4 is a cross-sectional view of the door closed state of the present invention.

* Explanation of symbols for main parts of the drawings

10: first hinge piece 20: second hinge piece

21: protrusion bar 22: joint means

30: hinge axis 40: closing buffer mechanism

41: cylinder 42: internal space

43: bypass euro 43a: the first through

43b: second through hole 43c: second through hole

44: piston 45: distribution hole

46: valve plate S: coil spring

L: Liquid Fluid

The present invention relates to a hinge for a building door used when installing a building door, that is, a general door, a fire door, an auxiliary door of a fire shutter, and more particularly, a hinge for a building door having an automatic closing function and a slowly closing door check function. .

In the conventional door hinge, there was a hinge that only serves as a simple hinge and has a self-closing function. Only a simple hinge serves to install a separate door check in order to provide an auto closing function. Most of them are not only expensive goods depending on imports, but also have a disadvantage of poor appearance because they are installed on the outside of the door and when the door is closed because the hinge with automatic closing function can not be adjusted by the spring. There was a problem that there is a risk of hurting the occupants if the shock noise is generated every time and the closing speed is fast.

An object of the present invention is to provide a hinge for a building door to control the closing speed of the door by installing a buffer mechanism between the first hinge piece and the second hinge piece in order to solve the conventional problems as described above. In providing.

The present invention for achieving the above object is that the first hinge piece and the second hinge piece is foldably connected by the hinge side, the coil spring for door automatic closing on the hinge side and at the same time the door automatic closing speed It is characterized by installing a buffer mechanism consisting of a cylinder and a piston between the two hinge pieces to control the.

In addition, the present invention is characterized in that the rear end of the cylinder of the shock absorbing mechanism is rotatably installed on the first hinge piece, and the tip of the piston is connected to the protruding rod extending from the second hinge piece.

The present invention is characterized in that the bypass passage is provided on one side of the inner space of the cylinder to communicate with the inner space by the first passage, the second passage, and the third passage.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

In a hinge connected to the hinge axis 30 of the first hinge piece 10 and the second hinge piece 20 so as to be rotatable about the hinge axis 30, one on the hinge axis 30. The above coil spring S is provided to impart a home position return function to both of the hinge pieces 10 and 20, while the closing buffer mechanism 40 is disposed between the first hinge piece 10 and the second hinge piece 20. This is done by installing

The closing buffer mechanism 40 is a mechanism for adjusting the door closing speed, and comprises a cylinder 41 having an inner space 42 and a piston 44 reciprocating in the inner space 42, wherein the cylinder The rear end of the head 41 is pivotally mounted to the first hinge piece 10 to the shaft 50, and the tip of the piston 44 is articulated by the protruding rod 21 of the second hinge piece 20. Connected by

In addition, a bypass flow path 43 is provided at one side of the inner space 42 formed in the cylinder 41, and the bypass flow path 43 has a first through hole 43a, a second through hole 43b, and a third through hole 43. The first through hole 43a is disposed at the inner end of the inner space 41, and the third through hole 43c is disposed at the inlet side end by the through hole 43c. 43b) is disposed adjacent to the first through hole 43a, the second through hole 43b is coupled to the flow rate adjusting means 60 using a screw valve or the like so as to adjust the flow rate passing therethrough from the outside.

In addition, the head of the piston 44 is drilled with several flow holes 45 through which oil passes during the reciprocating movement of the piston 44. When the piston 44 moves inward, the flow holes are closed and move outwards. When exiting, the valve plate 46 which is opened is provided so that a movement is possible.

The inner space 42 and the bypass passage 43 of the cylinder are filled with a liquid fluid L.

The present invention configured as described above is used to automatically close the door silently, and the door is automatically closed by the home return coil coil S installed on the hinge side 30.

And the closing buffer mechanism 40 of the present invention is to suppress the door to close tightly by the coil spring (S) to be closed slowly but close relatively quickly until the closing speed of the door almost close and just before the final closing In order to further control the closing speed of the door to quiet the closed state of the door.

Referring to the closing operation state of the closing shock absorbing mechanism 40 as described above, in order to close the door as shown in the third way while the door is opened as shown in the fourth way, the piston 44 must enter the inside of the cylinder 41. do. At this time, the piston 44 has to be pushed in while pushing the liquid fluid (L) and the liquid fluid (L) has to exit somewhere. At this time, the valve plate 46 of the head of the piston 44 is in close contact with the head of the piston under the pressure of the liquid fluid L, and thus the flow hole 45 of the piston head is closed, so that the liquid fluid L of the first fluid 43 is closed. ) And the second through hole 43b, and flows into the third space through the third through hole 43c. In this state, since the traveling speed of the piston 44 is proportional to the moving speed of the liquid inductor L, the door closing speed can be adjusted by adjusting the passage flow rate of the bypass flow path 43 by the flow adjusting means 60. .

In addition, until the piston 44 reaches the second through hole 43b, the liquid inductor L can exit a relatively large amount through the first through 43a and the second through 43b. After the piston 44 has passed beyond the second through hole 43b, the liquid fluid L exits only through the first through hole 43a, so that the moving speed of the liquid fluid L decreases greatly. Closing speed is very quiet.

When the door is artificially opened, the valve plate 46 of the piston 44 is separated from the distribution hole 45 as in the fourth degree, so that the liquid fluid L opens the distribution hole 45 and the bypass flow path 43. Through the large amount of flow through it is possible to avoid the load by the closing buffer mechanism when opening the door.

In the present invention, the cylinder 41 is rotatably installed on the first hinge piece 10 by the shaft 50, and the tip of the piston 44 is attached to the protruding rod 21 of the second hinge piece 20. Since it is connected by the joint means 22, the stroke distance of the piston 44 can be sufficiently secured by the protruding rod 21 of the second hinge piece 20, and the accurate operation of the shock absorbing mechanism can be ensured. In addition, by installing the rear end of the cylinder 41 to be rotatable, the reciprocating motion of the piston 44 by the protruding rod 21 can be made smoothly.

Therefore, the present invention is a useful design that can be used particularly suitably for fire doors, fire doors, as well as general building doors.

Claims (4)

In the first hinge piece 10 and the second hinge piece 20 are connected to the hinge shaft 30 so as to be foldable, it is installed in the coil spring S for automatically closing the door to the hinge shaft 30 and A hinge for a building door made by installing a door closing buffer mechanism 40 between the first hinge piece 10 and the second hinge piece 20 to control the automatic door closing speed. According to claim 1, The door closing buffer mechanism 40 is composed of a cylinder 41 filled with a liquid inductor (L) and a piston 44 for reciprocating the inner space of the cylinder 41, the cylinder 41 The rear end of the) is rotatably installed on the first hinge piece 10 and the front end of the piston 44 is connected by the protruding rod 21 and the joint means 22 protruding from the second hinge piece 20. Hinges for building doors characterized in that. According to claim 2, The cylinder 44 is provided with a bypass flow path 43 on one side of the inner space 42, the first passage 43a, the second passage 43b, the third passage 43c Hinges for building doors, characterized in that the interior space by the 42 and the communication. The valve 44 according to claim 2, wherein the piston (44) forms a plurality of flow holes (45) in the head thereof, thereby opening and closing the valve plate (46) for opening and closing the flow holes (45) during the entry and exit of the piston (44). Hinges for building doors installed.