KR101840515B1

KR101840515B1 - Adjustable shock-absorbing hinge

Info

Publication number: KR101840515B1
Application number: KR1020150099465A
Authority: KR
Inventors: 박희범
Original assignee: 박희범
Priority date: 2015-07-13
Filing date: 2015-07-13
Publication date: 2018-03-20
Also published as: KR20170008109A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge provided on a door, and relates to a shock absorbing hinge for preventing door closure noise by constituting parts such as a center pin, a rotary member, a pressing member, and a spring.
The cushion hinge of the present invention comprises: a door plate having a first sleeve formed at an upper portion thereof and a third sleeve formed at an upper portion thereof; a door plate having a second sleeve formed at an intermediate portion thereof and an adjustment window formed at a lower portion thereof; A rotary member having an inclined surface having an oblique surface and a horizontal surface formed in a lower portion and a hole formed therethrough in which a center pin penetrates, A pressing member having a through hole formed therein and having an oblique projection having an oblique surface and a horizontal surface on an upper portion thereof, a spring, a pressure regulating member having a hole formed therein through which the center pin passes, A hinge including a hole into which the member is inserted and a pressure regulating rotation member formed with a screw groove and formed with an adjusting groove on the outside; The door plate and the door plate are coupled so that the second sleeve is positioned between the first sleeve and the third sleeve, one stopper is inserted and fixed in the upper portion of the first sleeve, The upper surface of the rotating member and the upper surface of the pressing member are brought into contact with each other and the spring pin is fitted to the center pin so that the upper portion of the spring The pressure adjusting member is brought into contact with the lower portion of the pressing member, the pressure adjusting member is fitted to the pressure adjusting and rotating member, the upper portion of the pressure adjusting member is brought into contact with the lower portion of the spring, and another stopper is fixed to the lower portion of the third sleeve; When the door is closed, the door plate and the second sleeve are rotated to rotate the rotary member, and the asperity protrusion of the pressing member in contact with the beveled projection of the rotary member moves downward, and the pressing member moves downward to compress the spring.
The cushion hinge of the present invention prevents the door closing noise by reducing the door closing speed by generating a resistance force by compressing the spring when the door is closed. As the door starts to close, the spring is not compressed and the door is compressed after it has been rotated more than a certain distance, so it is convenient to do not need much force from the beginning to close the door.
Further, the buffer hinge of the present invention can be used in place of existing hinges, and it is advantageous that the hinge does not need to install a separate buffer device, so that it is convenient and inexpensive, and the structure is simple, .
Compared with the conventional patent, the cushion hinge of the present invention excludes the thread groove and the threaded structure, and is easy to manufacture and low in manufacturing cost. And, after the door is closed, the door does not open by itself due to the restoring force of the spring, and the user can manipulate the pressure regulating member to adjust the spring pressure appropriately.

Description

{ADJUSTABLE SHOCK-ABSORBING HINGE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge provided on a door, and relates to a shock absorbing hinge for preventing door closure noise by constituting parts such as a center pin, a rotary member, a pressing member, and a spring.

A hinge is a part that connects a door leaf to a frame and rotates to open and close. It is generally a door plate with a door frame sleeves, a door plate with door sleeves, a door frame sleeve and door sleeves, And a center pin passing through the sleeve.

Conventional hinges having the general configuration described above are manufactured in various forms according to functions and demands and are used universally.

However, when the door with the existing hinge is opened and then the door is severely closed, there is a problem that the door hits the door frame strongly and a door-closing noise is generated.

In order to solve the problem of door-closed noise, various buffering techniques have been proposed to reduce the door closing speed to prevent noise. However, it has been proposed that the door is used for a smaller and lighter door such as a cabinet It was necessary to install a separate shock absorber.

Accordingly, the applicant of the present invention has found a "buffer hinge" which is a domestic patent application No. 10-2015-0071300 (hereinafter referred to as a conventional patent). In the conventional hinge for buffering, the rotary motion in which the door is closed is changed to the vertical motion of the center pin or the accessory part by using the coupling relation between the center pin having the thread groove on the outside and the part having the threaded part therein, To reduce the door closing speed by generating a resistance force.

The buffer hinge of the above-mentioned conventional patent can be used instead of the conventional hinge, and it is advantageous that the hinge itself performs the buffering function without the necessity of installing a separate buffer device, so that it is convenient and inexpensive and the structure is simple, have.

However, the conventional buffer hinge has the following three disadvantages. The first is that relatively expensive manufacturing techniques and equipment are required to implement threading of the threaded grooves of the center pin and its associated parts, thereby increasing manufacturing costs.

Second, since the spring maintains the compressed state even when the door is closed, the force of opening the door constantly by the restoring force of the spring acts. The hinge of the conventional patent compresses the spring when the door is closed, so that the door always tries to rotate in the opposite direction (direction in which the door opens) due to the restoring force of the spring. Generally, since the door has a fixing device, it is difficult for the closed door to open by itself, but when the door is not provided with a fixing device, the door opens by itself.

The third is that the spring pressure can not be controlled. The shock absorber hinges can not change the spring pressure of the user. If the spring pressure is too low, the buffering effect is insufficient. If it is too strong, too much force is needed to close the door. In practice, the conditions that affect the buffering function, such as the weight of the door and the number of hinges used, may vary, so the user must include means to control the spring pressure of the buffering hinge.

SUMMARY OF THE INVENTION The present invention has been devised to solve the problems of the above-described conventional patent, and it is an object of the present invention to provide a hinge with a center pin, a rotating member, a pressing member, a spring, It is an object to provide a further improved shock absorbing hinge which prevents the phenomenon of self-opening after the door is closed and allows the user to properly adjust the spring pressure.

The above-described object of the present invention can be achieved through a buffer hinge (hereinafter referred to as a buffer hinge) capable of controlling the pressure, and the buffer hinge proposed by the present invention can be implemented in the following manner.

The cushion hinge of the present invention comprises: a door plate having a first sleeve formed at an upper portion thereof and a third sleeve formed at an upper portion thereof; a door plate having a second sleeve formed at an intermediate portion thereof and an adjustment window formed at a lower portion thereof; A rotary member having an inclined surface having an oblique surface and a horizontal surface formed in a lower portion and a hole formed therethrough in which a center pin penetrates, A pressing member having a through hole formed therein and having an oblique projection having an oblique surface and a horizontal surface on an upper portion thereof, a spring, a pressure regulating member having a hole formed therein through which the center pin passes, A hinge including a hole into which the member is inserted and a pressure regulating rotation member formed with a screw groove and formed with an adjusting groove on the outside; The door plate and the door plate are coupled so that the second sleeve is positioned between the first sleeve and the third sleeve, one stopper is inserted and fixed in the upper portion of the first sleeve, The upper surface of the rotating member and the upper surface of the pressing member are brought into contact with each other and the spring pin is fitted to the center pin so that the upper portion of the spring The pressure adjusting member is brought into contact with the lower portion of the pressing member, the pressure adjusting member is fitted to the pressure adjusting and rotating member, the upper portion of the pressure adjusting member is brought into contact with the lower portion of the spring, and another stopper is fixed to the lower portion of the third sleeve; When the door is closed, the door plate and the second sleeve are rotated to rotate the rotary member, and the asperity protrusion of the pressing member in contact with the beveled projection of the rotary member moves downward, and the pressing member moves downward to compress the spring.

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The buffer hinge of the present invention can be applied as an automatic closing hinge (SELF-CLOSING HINGE) which automatically closes an open door by slightly changing the technical principle. A self-closing hinge that compresses the spring when the door is closed and decelerates the door closing speed with the resistance of the spring, and an automatic closing hinge that automatically closes the door with the resilience of the compressed spring by compressing the spring when the door is opened, However, since the key technical principle of the hinge is the same and can be easily implemented by slightly changing some of the components, it will be described as an application method of the present invention.

The automatic closing hinge of the present invention comprises a door plate having a first sleeve formed at an upper portion thereof and a third sleeve formed at a lower portion thereof, a door plate having a second sleeve formed at an intermediate portion thereof and an adjustment window formed at a lower portion thereof, A rotatable member having an inclined surface having an oblique surface and a horizontal surface formed in a lower portion and a hole having a center hole formed therein, A pressing member having an upper surface formed with an oblique projection having an oblique surface and a horizontal surface with a hole through which the pin passes, a spring, a pressure regulating member formed with a hole through which the center pin penetrates, A hinge including a hole into which the adjustment member is inserted and a pressure regulating rotation member formed with a screw groove and formed with an adjustment groove on the outside; The door plate and the door plate are coupled so that the second sleeve is positioned between the first sleeve and the third sleeve, one stopper is inserted and fixed in the upper portion of the first sleeve, The upper surface of the rotating member and the upper surface of the pressing member are brought into contact with each other and the spring pin is fitted to the center pin so that the upper portion of the spring The pressure adjusting member is brought into contact with the lower portion of the pressing member, the pressure adjusting member is fitted to the pressure adjusting and rotating member, the upper portion of the pressure adjusting member is brought into contact with the lower portion of the spring, and another stopper is fixed to the lower portion of the third sleeve; When the door is opened, the door plate and the second sleeve rotate to rotate the rotating member, and the biasing projection of the pressing member in contact with the beveled projection of the rotating member moves downward, and the pressing member moves downward to compress the spring.

The cushion hinge of the present invention prevents the door closing noise by reducing the door closing speed by generating a resistance force by compressing the spring when the door is closed. As the door starts to close, the spring is not compressed and the door is compressed after it has been rotated more than a certain distance, so it is convenient to do not need much force from the beginning to close the door.

Further, the buffer hinge of the present invention can be used in place of existing hinges, and it is advantageous that the hinge does not need to install a separate buffer device, so that it is convenient and inexpensive, and the structure is simple, .

Compared with the conventional patent, the cushion hinge of the present invention excludes the thread groove and the threaded structure, and is easy to manufacture and low in manufacturing cost. And, after the door is closed, the door does not open by itself due to the restoring force of the spring, and the user can manipulate the pressure regulating member to adjust the spring pressure appropriately.

Meanwhile, the automatic closing hinge of the present invention automatically closes a door opened by an external action of a user or the like, thereby preventing the door from being left open. Contrary to the hinge, the door is opened and the spring is compressed. When the external action of opening the door disappears, the door is rotated in the opposite direction (door closing direction) by the restoring force of the compressed spring.

The automatic closing hinge of the present invention can be used in place of existing hinges, and it is convenient and inexpensive to carry out the automatic closing function by itself without the need of installing a separate automatic closing device, and the merit of simple structure and trouble- .

FIG. 1 shows an exploded view
Fig. 2 is a view showing a door opening state of the buffer hinge
Fig. 3 is a state diagram of the buffer hinge before the door is closed
Fig. 4 is a view showing a state in which the buffer hinge is closed
5 is a perspective view and a bottom view of the stopper of the buffer hinge, the pressure regulating member, the pressure regulating rotary member,
6 is a perspective view and a bottom view of the rotating member of the buffer hinge,
7 is an explanatory diagram of the operation of the pressure regulating member of the buffer hinge
Fig. 8 is a view showing the door closing state
9 is a view showing a door opening state of the automatic closing hinge
10 is a view showing a door closing state of the automatic closing hinge

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the buffer hinge of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 3 is a state before the closure of the closure hinge, Fig. 4 is a state showing the closure of the closure hinge, Fig. 5 is a view showing the state before the closure of the closure hinge, Fig. 6 is a perspective view and a bottom view of a rotating member, a pressing member of the present invention, and Fig. 7 is a perspective view of a pressure regulating member of the present invention. Fig. 8 is a door closing state of the application system of the present invention, Fig. 9 is a door opening state of the automatic closing hinge of the present invention, and Fig. 10 is a door closing state view of the automatic closing hinge of the present invention.

2 and 9 illustrate a portion of the second sleeve 21 in cross-section, and FIGS. 3, 4, and 8 And FIG. 10 shows a second sleeve 21 and a part of the door plate 20 omitted. FIG. 7 shows the entire door plate 20 including the second sleeve 21 omitted.

As shown in FIGS. 1 to 6, the cushion hinge of the present invention includes a door frame 10 having a plurality of screw holes formed therein for fixing the door frame to the door frame, and a first sleeve 11 and a third sleeve 12 at the bottom.

A door plate 20 having a plurality of screw holes is formed for the purpose of fixing the door to the door, and a second sleeve 21 is formed in the middle of the door plate 20. A regulating window 21-1 is formed under the second sleeve 21 so that the regulating groove 81 of the pressure regulating rotation member 80 will be exposed.

The center pin 40 has a cylindrical rod shape and a guide groove 41 is formed on a side surface thereof.

Two stoppers 30 for fitting the first sleeve 11 and the third sleeve 12 are formed and fixing grooves 31 for receiving the center pin 40 are formed in the lower portion of the stopper 30. When the upper or lower portion of the center pin 40 is inserted into the fixing groove 31, the center pin 40 is inserted into the center pin 40, Is formed so as to be fixed firmly without rotating.

The rotary member 50 has a cylindrical shape with a hole through which the center pin 40 passes, and a beveled surface projection 51 is formed at a lower portion. The beveled surface projection 51 has an oblique surface 51-1 and a horizontal surface 51-2, and the oblique surface 51-1 is formed in a direction in which the door rotates when the door is closed.

The pressing member 60 has a cylindrical shape and a hole through which the center pin 40 passes and forms a guide projection 61 that is fitted into the guide groove 41 of the center pin 40 in the hole. The inclined projection 62 has an inclined surface 62-1 and a horizontal surface 62-2 corresponding to the inclined projection 51 of the rotary member 50. [

The spring 90 is formed of a compression spring having a size allowing the center pin 40 to pass therethrough.

The pressure regulating member 70 is formed in the form of a bolt and has a hole through which the center pin 40 passes and forms a guide protrusion 71 fitted in the guide groove 41 of the center pin 40 do. And form an external thread.

The pressure regulating rotation member 80 has a shape of a nut and has a hole and a screw groove in which the pressure regulating member 70 is assembled, and an adjusting groove 81 is formed on the outside.

The buffer hinge of the above configuration is assembled as follows. The door frame 10 and the door plate 20 are coupled so that the second sleeve 21 is positioned between the first sleeve 11 and the third sleeve 12 and one The stopper (30) is fitted and fixed. The center pin 40 is inserted into the second sleeve 21 through the lower part of the third sleeve 12 and the upper part of the center pin 40 is inserted into the fixing groove 31 of the plug 30 fixed to the first sleeve 11 . The rotating member 50 is fitted to the center pin 40 and positioned above the second sleeve 21 and then the pressing member 60 is inserted into the center pin 40 to be positioned under the rotating member 50. At this time, the guide protrusion 61 formed in the inner hole of the pushing member 60 is fitted into the guide groove 41 of the center pin 40. After the pressing member 60 is inserted, a spring 90 is fitted to the center pin 40 so that the upper portion of the spring 90 is brought into contact with the lower portion of the pressing member 60. As a result, as the rotary member 50 rotates, the beveled projections 51 under the rotary member 50 can be brought into contact with the beveled projections 62 on the upper portion of the pushing member 60, and the two beveled projections 51 The pushing member 60 can be moved downward to compress the spring 90 or vice versa to restore the compressed spring 90 so that the pushing member 60 can be pushed up. The pressure regulating member 70 and the pressure regulating rotational member 80 are sandwiched by the center pin 40. The pressure regulating member 70 is fitted into the inner hole of the pressure regulating rotational member 80, And the screw groove of the inner hole of the pressure regulating rotary member 80 are screwed to each other and then the pressure regulating member 70 is fitted to the center pin 40 and positioned under the spring 90. At this time, the guide protrusion 71 of the inner hole of the pressure regulating member 70 is fitted into the guide groove 41 of the center pin 40. Finally, one stopper 30 is fixed to the bottom of the third sleeve. At this time, the lower part of the center pin (40) is fitted and fixed to the fixing groove (31) of the cap (30). This completes the assembly of the buffer hinge.

The buffer hinge of the present invention operates as follows. The door leaf 20 and the second sleeve 21 rotate and the rotary member 50 fixed to the second sleeve 21 rotates when the door starts to be closed by an external action such as a user in the door opened state (Fig. 2) . When the rotary member 50 rotates more than a predetermined distance (Fig. 3), the inclined surface 51-1 of the inclined projection 51 under the rotary member 50 and the inclined surface 62 of the inclined projection 62 on the upper portion of the pressing member 60 -1) are brought into contact with each other, and the rotational force of the rotary member 50 is transmitted to the pressing member 60. However, since the pushing member 60 is not rotated because the guide projection 61 is fitted in the guide groove 41 of the center pin 40, the pushing member 60 is pressed in accordance with the contact form of the two bevel faces 51-1 and 62-1 The biasing protrusion 62 of the member 60 moves under the inclined projection 51 of the rotary member 50 and the pushing member 60 moves downward. As a result, the spring 90 is compressed and resistance is generated, thereby reducing the door closing speed.

When the door is closed (FIG. 4), the rotary member 50 and the pressing member 60 are stopped and the spring 90 is kept in a compressed state. Immediately before the door is closed, the bevel projection 51 of the rotary member 50 and the bevel projection 62 of the pushing member 60 pass through the inclined surfaces 51-1 and 62-1 to the horizontal surfaces 51-2 and 62- 2 because the direction in which the restoring force of the spring 90 acts is orthogonal to the two horizontal surfaces 51-2 and 62-2 in contact with each other, Do not. Therefore, even if the door is not provided with a fixing device, the door is stopped and the door does not open by itself.

In the buffer hinge of the present invention, the pressure regulation of the spring operates as follows. 7, when a suitable pin or a tool is inserted into the adjustment groove 81 exposed through the adjustment window 21-1 of the second sleeve 21 to rotate the pressure adjustment rotary member 80 to the left or to the right, The pressure regulating member 70 moves up and down to compress or uncompress the spring 90. [ The pressure regulating member 70 is configured such that the guide projection 71 is fitted in the guide groove 41 of the center pin 40 and is screwed to the pressure regulating rotary member 80, It moves up and down without rotating.

Generally, the force required to compress the spring is proportional to the length to be compressed, so it requires more force to compress the already compressed spring than to compress the uncompressed spring. Therefore, if the pressure regulating member 70 is moved upward to compress the spring 90 located between the pressure regulating member 70 and the pressing member 60 in advance, the pressure of the spring 90, that is, the resistance force increases when the door is closed . As the resistance increases, the buffering effect increases and more force is needed to close the door. Then, in order to reduce the increased spring pressure, the pressure regulating rotation member 80 is rotated in the opposite direction, and the pressure regulating member 70 is moved downward to uncompress the spring 90.

For reference, the buffer hinge of the present invention can implement an application method for increasing the pressure of the spring 90 independently of the method using the pressure regulating member 70 described above. A second rotary member 52 having an oblique projection is formed at an upper portion of the rotary member 50 in addition to the configuration of the shock absorbing hinge as shown in FIG. 8, and, unlike the pressing member 60, A second pressing member 63, a spring 90, and a pressing member 63 are formed on the center pin 40 in the assembling process of the hinge, (60) and the rotary member (50) in this order.

When the second sleeve 21 rotates while the door is closed, the rotary member 50 and the second rotary member 52 rotate in the same manner. The rotary member 50 rotates the pressing member 60 downward And the second rotating member 52 presses the second pressing member 63 upward to compress the spring 90 located between the two pressing members 60 and 63. [ In this case, the pressure of the spring 90 is increased by compressing the spring 90 twice as compared with the basic embodiment in which the rotating member 50 and the pressing member 60 are provided one by one.

Unlike the method using the pressure regulating member 70, the above-described application method is not user-adjustable, but merely illustrates a method of maximizing the pressure of the spring 90 in the course of implementation. It is but one example of the application of principles.

This completes the description of the buffer hinge of the present invention. The following describes the automatic closing hinge of the present invention.

As shown in Figs. 9 to 10, the components of the automatic closing hinge of the present invention are mostly the same as those of the above-mentioned buffer hinge. The inclined surface of the lower surface of the rotary member 500 is longer than the inclined surface 51 of the rotary member 50 and the inclined surface of the inclined surface of the rotary member 500 is inclined with respect to the inclined surfaces 51- 1). The inclined projection on the upper surface of the pressing member 600 is longer than the inclined projection 62 of the pressing member 60 and the inclined surface of the pressing member 600 is inclined with respect to the inclined surface 62- 1). That is, the bi-directional protrusions of the rotary member 500 and the pressing member 600 of the automatic closing hinge are longer than those of the rotary member 50 of the hinge hinge 60 and the interdigital protrusions 51 and 62 of the pressing member 60, Direction.

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This is the only difference between the components of the automatic closing hinge and the buffer hinge, and the assembly process is the same.

The automatic closing hinge of the present invention operates as follows. When the door is closed, the oblique surface of the beveled projection of the rotary member 500 and the oblique surfaces of the beveled protrusions of the pushing member 600 are kept in contact with each other while the spring 90 is kept in a slightly compressed or uncompressed state. When the door is opened by an external action such as a user (Fig. 9), the rotary member 500 is rotated and the pressing member 600 is pushed down and the spring 90 is compressed. When the door opening operation is finished and the user exits his or her hand and the external action disappears, the rotary member 500 is rotated reversely (in the door closing direction) by the restoring force of the spring 90, )

As described above, the automatic closing hinge of the present invention is the same as the buffer hinge and the core technical principle and most of the components, but slightly modified a few components. Therefore, it is possible to apply the spring pressure control method using the pressure regulating member 70 described in the automatic closing hinge and the buffer hinge, or the application method of increasing the spring pressure by adding the second rotating member and the second pressing member. Do. A repeated description thereof will be omitted.

Thus, the embodiments of the present invention have been described. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is obvious that it belongs to the range of.

10: door frame plate 11: first sleeve
12: third sleeve 20: door plate
21: second sleeve 21-1: adjustment window
30: stopper 31: fixing groove
40: center pin 41: guide groove
50: rotating member 51: oblique projection
51-1: oblique plane 51-2: horizontal plane
52: second rotating member 60: pressing member
61: guide projection 62: oblique projection
62-1: oblique plane 62-2: horizontal plane
63: second pressing member 70: pressure adjusting member
71: guide projection 80: pressure regulating rotation member
81: Adjusting groove 90: Spring
500: rotating member 600: pressing member

Claims

A door plate having a first sleeve formed at an upper portion thereof and a third sleeve formed at a lower portion thereof, a door plate having a second sleeve formed in the middle thereof and a control window formed under the second sleeve, A rotating member having a stopper, a center pin having a guide groove formed on a side surface thereof, a hollow portion having an oblique surface and an inclined surface having a horizontal surface, the hole having a hole through which the center pin penetrates, A pressing member having an oblique projection having an oblique and horizontal surface on its upper surface; a spring; a hole formed in the inside of the hole to penetrate the center pin; a guide protrusion that is inserted into the guide groove of the center pin is formed in the hole; A hinge including a pressure regulating member and a pressure regulating rotary member having a hole into which a pressure regulating member is inserted and a screw groove formed therein and having an adjusting groove on the outside;
The door plate and the door plate are coupled so that the second sleeve is positioned between the first sleeve and the third sleeve, one stopper is inserted and fixed in the upper portion of the first sleeve, The upper surface of the rotating member and the upper surface of the pressing member are brought into contact with each other and the spring pin is fitted to the center pin so that the upper portion of the spring The pressure adjusting member is brought into contact with the lower portion of the pressing member, the pressure adjusting member is fitted to the pressure adjusting and rotating member, the upper portion of the pressure adjusting member is brought into contact with the lower portion of the spring, and another stopper is fixed to the lower portion of the third sleeve;
When the door is closed, the door plate and the second sleeve are rotated to rotate the rotary member, and the biasing projection of the pressing member in contact with the beveled projection of the rotary member moves downward, and the pressing member is moved downward to compress the spring. .

A door plate having a first sleeve formed at an upper portion thereof and a third sleeve formed at a lower portion thereof, a door plate having a second sleeve formed in the middle thereof and a control window formed under the second sleeve, A rotating member having a stopper, a center pin having a guide groove formed on a side surface thereof, a hollow portion having an oblique surface and an inclined surface having a horizontal surface, the hole having a hole through which the center pin penetrates, A pressing member having an oblique projection having an oblique and horizontal surface on its upper surface; a spring; a hole formed in the inside of the hole to penetrate the center pin; a guide protrusion that is inserted into the guide groove of the center pin is formed in the hole; A hinge including a pressure regulating member and a pressure regulating rotary member having a hole into which a pressure regulating member is inserted and a screw groove formed therein and having an adjusting groove on the outside;
The door plate and the door plate are coupled so that the second sleeve is positioned between the first sleeve and the third sleeve, one stopper is inserted and fixed in the upper portion of the first sleeve, The upper surface of the rotating member and the upper surface of the pressing member are brought into contact with each other and the spring pin is fitted to the center pin so that the upper portion of the spring The pressure adjusting member is brought into contact with the lower portion of the pressing member, the pressure adjusting member is fitted to the pressure adjusting and rotating member, the upper portion of the pressure adjusting member is brought into contact with the lower portion of the spring, and another stopper is fixed to the lower portion of the third sleeve;
When the door is opened, the door plate and the second sleeve are rotated to rotate the rotary member, and the biasing projection of the pressing member in contact with the beveled projection of the rotary member moves downward and the pressing member moves downward to compress the spring. hinge.

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