KR102467531B1 - Door hinge including damper unit having pressure control member - Google Patents

Abstract

The present invention relates to a door hinge including a plurality of pressure control members. A door hinge according to an embodiment of the present invention includes a cover plate; a first mounting plate rotatably connected to the cover plate; a lever unit rotatably disposed on the first mounting plate and the cover plate; and an operating shaft connected to the lever unit and reciprocating according to rotation of the lever unit, a piston connected to the operating shaft, a cylinder into which the piston is inserted, an internal chamber formed by the piston and the cylinder, and an internal pressure of the internal chamber. A first pressure control unit for discharging the fluid inside the inner chamber to the outside when the first pressure is reached, and a second pressure control unit for discharging the fluid inside the inner chamber to the outside when the inner pressure of the inner chamber reaches the second pressure. A damper unit comprising a; includes.

Description

Door hinge including a damper having a plurality of pressure control members {Door hinge including damper unit having pressure control member}

The present invention relates to a door hinge including a plurality of pressure control members.

A damper is a device for relieving shock, and a door hinge including a damper is generally installed on a door that is opened and closed in a casement manner. Damper can be applied to prevent impact and noise when closing or opening the door.

Conventional dampers often break when a strong force is applied to the door, and as a result, the shock is transmitted to the hinge and the door as it is, resulting in the door being damaged or unpleasant shock, vibration, and noise being transmitted to the user. .

Prior patent documents disclose a door hinge having a damper bracket for preventing play.

Korean Patent Registration No. 10-207996

An object of the present invention is to provide a door hinge capable of absorbing shock and preventing noise generation.

In addition, it can withstand strong impact and has excellent durability.

A door hinge according to an embodiment of the present invention includes a cover plate; a first mounting plate rotatably connected to the cover plate; a lever unit rotatably disposed on the first mounting plate and the cover plate; and an operating shaft connected to the lever unit and reciprocating according to rotation of the lever unit, a piston connected to the operating shaft, a cylinder into which the piston is inserted, an internal chamber formed by the piston and the cylinder, and an internal pressure of the internal chamber. A first pressure control unit for discharging the fluid inside the inner chamber to the outside when the first pressure is reached, and a second pressure control unit for discharging the fluid inside the inner chamber to the outside when the inner pressure of the inner chamber reaches the second pressure. A damper unit comprising a; includes.

The second pressure may be greater than the first pressure.

The piston includes a groove communicating an inner space and an inner chamber,

The second pressure controller may include a second check valve unit disposed inside the piston to open or close the groove and a second flow path.

The second pressure controller includes a second spring disposed between the working shaft and an inner surface of the piston, and a blocking member disposed to block the groove of the piston by the second spring, and the second flow path includes the piston. It may be disposed between the inner surface of and the working shaft.

The first pressure controller may include a first flow path disposed along an outer surface of the piston.

The door hinge according to an embodiment of the present invention can absorb shock and prevent noise generation.

In addition, it can withstand strong impact and has excellent durability.

1 and 2 show a door hinge according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of Figure 1;
4 is a perspective view of a damper.
5 is an exploded perspective view of a damper.
6 is a cross-sectional view of the damper.
7 is a cross-sectional view showing how the damper operates when pressure is applied to the operating shaft of the damper.
8 is a cross-sectional view showing how the damper operates when a stronger pressure is applied to the operating shaft of the damper.
9 and 10 show a state in which the door hinge operates while attached to the door and the wall.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention may be modified in various forms, and the scope of the present invention is not limited to the embodiments described below. In addition, the embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art. Therefore, the shape and size of elements in the drawings may be exaggerated for clearer description, and elements indicated by the same reference numerals in the drawings are the same elements. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and actions. In addition, "include" a component in the entire specification means that other components may be further included without excluding other components unless otherwise stated.

1 to 3 show a door hinge 10 according to an embodiment of the present invention, and FIGS. 4 to 8 show a damper 510.

1 to 8, a door hinge 10 according to an embodiment of the present invention includes a cover plate 300; a first mounting plate 100 rotatably connected to the cover plate 300; a lever unit 400 rotatably disposed on the first mounting plate 100 and the cover plate 300; And an operating shaft 511 connected to the lever unit 400 and reciprocating according to the rotation of the lever unit 400, a piston 512 connected to the operating shaft 511, and a cylinder into which the piston 512 is inserted. 513, the internal chamber 514 formed by the piston 512 and the cylinder 513, and when the internal pressure of the internal chamber 514 reaches the first pressure, the fluid inside the internal chamber 514 is transferred to the outside. A first pressure control unit 515 discharged to and a second pressure control unit 516 configured to discharge the fluid inside the inner chamber 514 to the outside when the internal pressure of the inner chamber 514 reaches the second pressure. It includes; a damper unit 500 to do. In addition, a second mounting plate 200 connected to the cover plate 300 may be further included.

The first mounting plate 100 and the second mounting plate 200 perform a function of fixing the door hinge 10 to the door 1 and the wall 2 to which the door hinge 10 is attached. 9 and 10, the first mounting plate 100 is fixed to the door 1, and the second mounting plate 200 is fixed to the wall 2 or the door frame, so that the door 1 is installed on the wall. (2) Alternatively, it can be made to rotate with respect to the door frame. The first mounting plate 100 is inserted into a groove for fixing with a screw or the like and a groove formed in a door so that the fixed position is not distorted, and a cup into which a part of the cover plate 300 can be inserted. ) The second mounting plate 200 may also be fixed to a wall or door frame using screws or the like.

The cover plate 300 may be rotatably coupled to the first mounting plate 100 and fixedly coupled to the second mounting plate 200 . A lever part 400 and a damper part 500 may be disposed inside the cover plate 300, and the cover plate 300 protects the lever part 400 and the damper part 500 and imparts durability function can be performed. The plate of the cover 310 and the first mounting plate 100 may be rotated centrally by pins inserted into grooves formed therein. The cover plate 300 surrounds the damper part 500 and the lever part 400 and is rotatably coupled to the body frame 320 coupled to the second mounting plate 200 and the body frame 320 and a cover 310 rotatably coupled to the first mounting plate 100 . In addition, a torsion spring may be further included to provide elastic force during rotation between the cover 310 and the first mounting plate 100 . The torsion spring is disposed to surround the rotation axis of the cover 310 and the body frame 320, one end is disposed to contact the rotation axis of the cover 310 and the first mounting plate 100, and the other end is a lever. 410 and the body frame 320 may be arranged to touch the axis of rotation. Through this, when the lever 410 and the cover 310 rotate with respect to the first mounting plate 100, an elastic force may be applied.

The lever part 400 functions to determine an angle and a direction in which the second mounting plate 200 rotates with respect to the first mounting plate 100 . In addition, the pressure caused by the rotation of the first mounting plate 100 is transferred to the damper 510 of the damper unit 500 so that the damper 510 can absorb shock.

The lever unit 400 may include a lever 410 and at least one arm member 420 or 430. The lever 410 has one end rotatably coupled to the first mounting plate 100 and the other end rotatably coupled to the arm members 420 and 430, and the cover plate 300 between the one end and the other end. It can be arranged in combination with the body frame 320 so as to be rotatable. The arm members 420 and 430 may have one end rotatably coupled to the other end of the lever 410 and the other end rotatably coupled to the other arm members 420 and 430 or the operation shaft 511. . The arm members 420 and 430 may be plural, such as the first arm 420 and the second arm 430. In this case, each of the arm members 420 and 430 may be disposed to be rotatable with each other. . Among the female members 420 and 430, the female members 420 and 430 coupled to the operating shaft 511 may further include a rotation shaft or a groove rotatably coupled to the cover plate 300 between one end and the other end. have. Through this, the direction of the force generated by the rotation of the first mounting plate 100 can be linearly changed, so that the operation shaft 511 can move back and forth. The rotatably coupled parts of the lever unit 400 may each form a groove, and a pin inserted into each groove may be disposed.

The damper unit 500 performs a function of reducing impact and noise generated when the door is opened and closed. The damper part 500 may be disposed while being fixed to the cover plate 300 . The damper unit 500 may include a damper 510 for absorbing shock and a damper bracket 520 for fixing and supporting the damper 510 .

The damper 510 includes an operation shaft 511 connected to the lever unit 400 and reciprocating according to the rotation of the lever unit 400, a piston 512 connected to the operation shaft 511, and the piston 512 ) is inserted into the cylinder 513, the internal chamber 514 formed by the piston 512 and the cylinder 513, and when the internal pressure of the internal chamber 514 reaches the first pressure, the internal chamber 514 A first pressure control unit 515 for discharging the internal fluid to the outside and a second pressure control unit for discharging the fluid inside the internal chamber 514 to the outside when the internal pressure of the inner chamber 514 reaches a second pressure. (516).

The operating shaft 511 is connected to the other ends of the arm members 420 and 430 of the lever unit 400 . The direction of the force generated as the first mounting plate 100 rotates changes linearly through the lever 410 and at least one arm member 420 or 430, and the operating shaft 511 is driven by this force. As a result, reciprocating motion in and out of the cylinder 513 is possible. In the closed state (FIG. 10) in which the first mounting plate 100 and the cover plate 300 are arranged to form a right angle, more specifically, the angle formed between the first mounting plate and the cover 310 is an acute angle, When there is only one arm member 420 or 430, one end of the lever 410 moves downward and the other end moves upward so that one end of the arm member 420 or 430 moves upward. , The arm members 420 and 430 are rotated around a rotational axis rotatably coupled to the cover plate 300 so that their other ends rotate toward the first mounting plate 100, so that the operation shaft 511 It moves in the outer direction of the cylinder 513. If there are two arm members 420 and 430, one end of the first arm 420 member of the lever 410 is pulled toward the first mounting plate 100, and the first arm 420 The other end of the member pulls one end of the second arm 430 toward the first mounting plate 100, and the arm members 420 and 430 are rotatably coupled to the cover plate 300 as a rotating shaft. By rotating around , the other end rotates in the opposite direction to the first mounting plate 100 , so that the actuating shaft 511 moves in the inner direction of the cylinder 513 . As such, the moving direction of the operating shaft 511 may vary according to the number of arm members 420 and 430 . An open state in which the first mounting plate 100 and the cover plate 300 are arranged horizontally, more specifically, the angle formed by the first mounting plate 100 and the cover 310 becomes an obtuse angle (FIG. 9) In the case of , the operating shaft 511 moves opposite to the closed state. The operation shaft 511 may include a groove for inserting a pin responsible for the rotation shaft, and may have a cylindrical shape, but is not particularly limited.

The cylinder 513 provides a space for forming the inner chamber 514 therein, and serves to block the inner chamber 514 from the outside.

The piston 512 is coupled to the other end of the drive and forms an inner chamber 514 therein together with the cylinder 513 . The piston 512 moves inside the cylinder 513 as the working shaft 511 moves, and through this, the size and internal pressure of the inner chamber 514 can be changed. The piston 512 may have a funnel shape with an empty inside so that the second pressure control unit 516 can be disposed therein, and the fluid in the inner chamber 514 may flow into the second pressure control unit 516. It may include a first piston groove (512a) for enabling. In addition, a second piston groove 512b is provided at a portion contacting the inner surface of the cylinder 513 to allow the fluid in the inner chamber 514 flowing into the first pressure controller 515 to escape to the outside. can include To this end, the plane shape of the cylinder 513 may have a serrated edge.

The inner chamber 514 is a space defined by the cylinder 513 and the piston 512. As the piston 512 moves, the size and pressure of the internal space are changed. A first spring 518 may be disposed inside the piston 512 to apply a pushing force to the piston 512 so that the piston 512 is in a normal open state. In addition, the inner chamber 514 may further include a sealing port 519 for preventing leakage of the fluid inside. The sealing port 519 may be a sphere made of metal, but is not particularly limited.

The first pressure controller 515 performs a function of discharging the fluid inside the inner chamber 514 to the outside when the pressure of the inner chamber 514 exceeds a predetermined pressure. At this time, since the flow rate discharged through the first pressure controller 515 is small, the speed at which the piston 512 moves into the inner chamber 514 can be appropriately controlled. In addition, the passage provided by the first pressure controller 515 may remain open, and when the piston 512 presses or relaxes the inner chamber 514, the inner chamber 514 immediately and allows fluid to move between the outside. The first pressure controller 515 may include a check valve generally used to control the flow of fluid. More specifically, referring to FIGS. 4 to 8 , the first pressure controller 515 includes an upper support member 515c in contact with the piston 512 and a lower support member 515a in contact with the first spring 518 . ) and a first ring member 515b disposed between the upper support member 515c and the lower support member 515a. The lower support member 515a may include a passage or groove through which the fluid inside the inner chamber 514 can move, and the upper support member 515c may include a fluid introduced through the lower support member 515a. It may include a flow path or groove to move to the outside. The first pressure control unit 515 may be inserted and disposed in a form surrounding the outside of the piston 512 and may form a path along which fluid moves along the outer surface of the piston 512 .

The second pressure controller 516 performs a function of discharging the fluid inside the inner chamber 514 to the outside when the pressure of the inner chamber 514 reaches a predetermined level or higher. When the piston 512 is pressurized, the fluid can move by the first pressure controller 515, but the damper unit 500 is damaged by allowing more fluid to move through the second pressure controller 516 can prevent Accordingly, the second pressure controller 516 may be designed to operate only when a higher pressure than normal is applied. To this end, the second pressure control unit 516 may include a second check valve unit disposed inside the piston 512 to open or close the groove and a second flow path. More specifically, the second pressure control unit 516 is configured by a second spring 516b disposed between the inner surface of the operating shaft 511 and the piston 512 and the second spring 516b to the piston ( A blocking member 516a disposed to block the groove of 512 may be included. In addition, it is disposed between the actuating shaft 511 and the second spring 516b so that the second spring 516b maintains a constant force pressing the blocking member 516a, and the piston 512 A second spring support member 516c forming a second flow path therebetween may be further included. In this case, the second flow path may be disposed between the inner surface of the piston 512 and the operating shaft 511, and more preferably, the second flow path includes the second spring support member 516c and the piston. 512 may be disposed between the interior surfaces. Since the blocking member 516a is pressed by the second spring 516b, it blocks the first piston groove 512a when the pressure in the inner chamber 514 is low. If the pressure in the inner chamber 514 increases, the blocking member 516a is pushed despite the pressing force of the second spring 516b, and the fluid in the inner chamber 514 presses the second pressure. Flowed into the control unit 516, the introduced fluid is discharged to the outside along a second flow path formed between the second spring support member 516c and the piston 512.

Referring to FIG. 8, a second pressure control unit 516 and a first pressure control unit 515 are disposed in contact with the inside and outside of the piston 512, respectively, along the inner and outer surfaces of the piston 512. A flow path may be formed to discharge fluid inside the inner chamber 514 . Through this, the first pressure control unit 515 and the second pressure control unit 516 can discharge fluid without mutual interference.

7 shows a case where the operating shaft 511 receives a small pressure. The piston 512 is pushed by the working shaft 511, and the internal pressure of the inner chamber 514 rises, and the fluid moves through the first flow path provided by the first pressure controller 515 (dotted line). arrow). 8 shows a case where the operating shaft 511 receives a high pressure. The piston 512 is pushed by the working shaft 511, and the internal pressure of the inner chamber 514 rises, and the fluid moves through the first flow path provided by the first pressure control unit 515. (dotted arrow), the fluid moves more quickly to the outside through the second flow path provided by the second pressure controller 516 (solid arrow).

An upper portion of the cylinder 513 may further include a sealing portion 517 blocking inside and outside of the cylinder 513 . The sealing part 517 is in contact with the internal sealing member 517b in contact with the operating shaft 511, the external sealing member 517c surrounding the outside of the internal sealing member 517b, and the inner surface of the cylinder 513. A second ring member 517a may be included.

The damper bracket 520 may be detachably coupled to the cover plate 300 . For example, the damper bracket 520 may be smaller than the cover plate 300 and disposed inside the cover plate 300 . Also, the damper bracket 520 may have a shape surrounding the damper 510 .

The present invention is not limited by the above-described embodiments and accompanying drawings, but is intended to be limited by the appended claims. Therefore, various forms of substitution, modification, and change will be possible by those skilled in the art within the scope of the technical spirit of the present invention described in the claims, which also falls within the scope of the present invention. something to do.

10: door hinge, 100: first mounting plate, 200: second mounting plate, 300: cover plate, 310: cover, 320: body frame, 400: lever part, 410: lever, 420: first arm, 430: 2nd arm, 500: damper part, 510: damper, 511: working shaft, 512: piston, 512a: first piston groove, 512b: second piston groove, 513: cylinder, 514: inner chamber, 515: first pressure Control unit, 515a: lower support member, 515b: first ring member, 515c: upper support member, 516: second pressure control unit, 516a: blocking member, 516b: second spring, 516c: second spring support member, 517: seal Part, 517a: second ring member, 517b: internal sealing member, 517c: external sealing member, 518: first spring, 519: seal, 520: damper bracket, 1: door, 2: wall

Claims (5)

cover plate; a first mounting plate rotatably connected to the cover plate; a lever unit rotatably disposed on the first mounting plate and the cover plate; and an operating shaft connected to the lever unit and reciprocating according to rotation of the lever unit, a piston connected to the operating shaft, a cylinder into which the piston is inserted, an internal chamber formed by the piston and the cylinder, and an internal pressure of the internal chamber. A first pressure control unit for discharging the fluid inside the inner chamber to the outside when the first pressure is reached, and a second pressure control unit for discharging the fluid inside the inner chamber to the outside when the inner pressure of the inner chamber reaches the second pressure. A damper unit comprising a; includes,
The piston includes a groove communicating an inner space and an inner chamber,
The second pressure control unit includes a second check valve unit and a second flow path disposed inside the piston to open or close the groove,
The second check valve unit includes a second spring disposed between the working shaft and an inner surface of the piston and a blocking member disposed to block the groove of the piston by the second spring,
Wherein the second passage is disposed between the inner surface of the piston and the working shaft,
door hinge.
According to claim 1,
The second pressure is greater than the first pressure,
door hinge.
According to claim 1,
The first pressure control unit includes a first flow path disposed along the outer surface of the piston,
door hinge.

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