KR20170138026A - a door hinge - Google Patents

Abstract

The present invention relates to a hinge for a hinged door. More specifically, the hinge for a hinged door is provided to reduce the speed at which the door is closed, such that noise and accidents occurring while the door is closed are prevented, and provided to automatically close the opened door. The hinge for a hinged door couples a door frame plate and a door plate, wherein a first sleeve and a third sleeve are formed on one side of the door frame plate, and a second sleeve is formed on one side of the door plate, such that the second sleeve is located between the first sleeve and the third sleeve. The hinge for a hinged door comprises: a deceleration member lever protruding inward from an upper portion of the second sleeve; a first fixing member having a latch pin groove and a center rod hole formed at a lower portion thereof and inserted and fixated to the first sleeve; a latch pin inserted to the latch pin groove of the first fixing member; a third fixing member having a stopper and a center rod hole formed on an upper portion thereof and inserted and fixated to the third sleeve; a center rod having a latch formed on an upper outer surface, wherein an upper end is inserted into the center rod hole of the first fixing member, and a lower end is inserted into the center rod hole of the third fixing member; and a deceleration member having an upper pin formed on an upper portion, a magnet inserted thereinto, a lower pin formed on a lower portion, and a center rod through hole formed at a center, such that the deceleration member is inserted into the center rod.

Description

Hinge for a door {a door hinge}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge for a hinged door, and more particularly, to a hinge for a hinged door which reduces door closing speed to prevent door closing noise and safety accidents and completely closes the door automatically.

In general, the hinged door uses two or more hinges for smooth opening and closing operations. The hinge includes a door plate which is usually fastened to the door frame and a door plate which is fastened to the door.

When using such a hinged door, the door is severely closed due to user's carelessness or wind, and a door-closure noise or a fingernail safety accident occurs. Therefore, a damper device (damper) for preventing door closing noise and safety accident is also installed separately for decelerating the door closing speed.

However, since the damper device is installed after the door is installed and the additional device is installed again, there is a problem that it is troublesome for the cosmetic view because the device which is apparently visible is conspicuous.

In order to solve such a problem, various damper hinges have been devised in which a damper function is added to a hinge which is essentially used in a door, and it is not necessary to provide a separate damper device if only a hinge is provided.

However, since the conventional damper hinge has to have a complicated structure in a relatively small hinge, it is difficult to manufacture the damper hinge, the manufacturing cost is increased, the damper hinge is difficult to install on the door, the trouble is frequent, and maintenance is troublesome.

The present invention has been devised to solve the problems of the conventional damper hinge. It is similar in size to be compatible with a general hinge, has the same installation method, and has a damper function and a closer function for automatically closing the door The purpose of the hinges is to show the hinges for the hinges.

In addition, the hinge of the present invention (hereinafter referred to as the hinge of the present invention) simplifies the structure and facilitates fabrication and lowers the possibility of failure.

In order to achieve the above object, the hinge of the present invention is characterized in that a first sleeve and a third sleeve are formed on one side of a door frame plate, a second sleeve is formed on one side of the door plate, and a first sleeve and a third sleeve And the door plate and the door plate are coupled to each other so that the second sleeve is positioned on the second sleeve, the hinge member comprising: a deceleration member lever protruding inward from an upper portion of the second sleeve; A first fixing member formed with a latch pin groove and a center bar hole in the lower portion and inserted and fixed in the first sleeve; A latch pin inserted into the latch pin groove of the first fixing member; A third fixing member formed with a stop jaw and a central bore hole at an upper portion thereof and fixedly inserted into the third sleeve; A center rod having a latch formed on an upper outer surface thereof and having an upper end inserted into the center hole of the first holding member and a lower end inserted into the center hole of the third holding member; And a decelerating member having an upper pin formed at an upper portion thereof, a magnet inserted therein, a lower pin formed at a lower portion of the upper pin, and a center bar through hole formed at a center thereof.

In the hinge of the present invention, the third sleeve and the fifth sleeve are formed on one side of the door frame plate, the fourth sleeve is formed on one side of the door plate, and the fourth sleeve is positioned between the third and fifth sleeves. A hinge comprising a plate and a door plate coupled to each other, the nut lever protruding inward from an upper portion of the fourth sleeve; A third fixing member formed with a screw hole at the bottom and inserted and fixed in the third sleeve; A fifth fixing member having a screw groove formed on an inner surface thereof and inserted and fixed in a fifth sleeve; A spring compression member having a center hole at its center and a screw thread at its outer surface to be screwed with the fifth fixing member; A screw rod having a screw groove formed on an outer surface thereof, an upper end inserted into a screw rod hole of the third fixing member, and a lower end inserted into a screw rod hole of the spring compression member; A nut having a slide groove formed on an outer surface thereof and a screw thread formed on an inner surface thereof and screwed to the screw rod; And a spring positioned between the nut and the spring compression member.

The reduction member of the hinge of the present invention has a lower pin and a center bar through hole at the lower portion thereof; Forming an opening in the upper portion by forming a space therein; A plurality of pressing members positioned in the inner space and contacting the center bar passing through the center bar through-hole; A plurality of bolts inserted outside and urging the pressing member; And a lid having an upper pin formed at an upper portion thereof, a magnet inserted therein, and a center bar through hole formed therein, the lid being inserted and fixed in the opening portion.

Alternatively, the decelerating member of the hinge of the present invention has a lower pin and a center bar through hole at the lower portion thereof; Forming an opening in the upper portion by forming a space therein; A wing member which is located in the inner space and is fixed to the center bar passing through the center bar through hole and formed with a plurality of blades; Oil injected into the inner space; And a lid having an upper pin formed at an upper portion thereof, a magnet inserted therein, and a center bar through hole formed therein, the lid being inserted and fixed in the opening portion.

According to the structure of the hinge of the present invention, when the door is closed, frictional force is generated between the decelerating member and the center bar at a certain angle before closing completely, and this frictional force acts as a resistance to decelerate the door closing speed.

This damper function is like the sudden turning of the door suddenly, so that even if the door is severely closed due to user's carelessness or wind, the power is reduced or stopped in the middle, so door-closed noise and safety accident .

The damper function of the hinge of the present invention is characterized in that when the door is opened, no resistance is generated, and when the door is closed, there is no resistance but a resistance is generated from a certain angle. It is inconvenient to use a door that is always tough when opening or closing the door, but it is faithful to the original function of the damper to prevent the door from clashing with the door without being inconvenient if it is stiff only before the door is closed.

In the hinge of the present invention, when the door is opened, the spring is compressed, and when the user releases the door from the door, the spring is restored and the door is automatically closed (closing function). Therefore, even if the door is stopped by the damper function, It is completely closed.

The closure function of the hinge of the present invention is characterized in that, when the door is opened wide and goes beyond a certain angle, the closure function does not work and the door remains open. This is the door that was automatically closed at all times, but you can leave it open as needed.

As such, the hinge of the present invention can be used in place of existing hinges and performs a damper function and a closure function by itself, so that it is unnecessary to install a separate device on the door, which is convenient and good in appearance. Further, since the structure is simple, the manufacturing is easy and the possibility of failure is low.

1 is an exploded perspective view showing a structure of a hinge of the present invention;
2 is an assembled perspective view of the hinge of the present invention.
3 is a partial cross-sectional perspective view showing the engaged state of the hinge of the present invention.
4 is a partially sectional front view showing another engagement state according to the door opening angle of the hinge of the present invention.
5 is a partial cross-sectional perspective view showing the engaged state in which the spring compression of the hinge of the present invention is stopped;
6 is a cross-sectional view showing the engagement state of other main parts according to the door opening angle of the hinge of the present invention
7 is a partial sectional view showing a lower surface of the first fixing member of the hinge of the present invention
8 is a partial cross-sectional front view showing the engaged state of the spring compression member of the hinge of the present invention
Fig. 9 is an exploded perspective view showing various embodiments of the speed reducing member of the hinge of the present invention.

Hereinafter, preferred embodiments of the hinge of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing the structure of the hinge of the present invention, Fig. 2 is an assembled perspective view of the hinge of the present invention, Fig. 3 is a partial cross- Fig. 5 is a partial cross-sectional perspective view showing a state in which the spring compression of the hinge of the present invention is stopped; Fig. 6 is a partial cross-sectional perspective view of the hinge according to the present invention; Fig. FIG. 7 is a partial cross-sectional view showing a lower surface of the first fixing member of the hinge of the present invention, FIG. 8 is a partial cross-sectional front view of the hinge, 9 is an exploded perspective view showing various embodiments of the reduction member of the hinge of the present invention.

3 and 4 illustrate the first sleeve, the second sleeve, the third sleeve, the fourth sleeve, and the fifth sleeve to show the internal structure of the hinge of the present invention. Figs. 4 and 5 show the second sleeve, the fourth sleeve The sleeve was cut and shown, and Fig. 8 cut out the third sleeve, the fourth sleeve, and the fifth sleeve. Fig. 4 shows a state in which the angle between the door frame plate and the door plate is 0 degrees (0 degrees) and 30 degrees (30 degrees), and Fig. 6 is a cross- Sectional views are shown in three stages of 0 degree (A-1, B-1), 30 degrees (A-2, B-2), and 140 degrees (A-3, B-3). Fig. 8 shows a state in which the spring compression member is decompressed (R) and compressed (P) in the same condition that the hinge of the present invention makes 180 degrees, Fig. 9 shows three embodiments A ) (B) (C).

As shown in FIGS. 1 to 5, the hinge of the present invention has a plate-shaped door plate 10 having a plurality of screw holes formed therein for the purpose of being fixed to the door frame, and a cylindrical first sleeve 11 ), The third sleeve 12, and the fifth sleeve 13 are formed.

A plate-shaped plate-like plate 20 having a plurality of screw holes formed therein for the purpose of being fixed to the door is formed, and cylindrical second sleeves 21 and fourth sleeves 22 are formed on one side thereof. A decelerating member lever 21-1 is protruded into the upper portion of the second sleeve 21 and a nut lever 22-1 is protruded inside the upper portion of the fourth sleeve 22. [ At this time, the deceleration member lever 21-1 is made of steel that sticks to the magnet. In this embodiment, holes are formed outside the second sleeve 21 and the fourth sleeve 22 so as to facilitate assembly of the hinge, and the deceleration member lever 21-1 and the nut lever 22-1 are inserted and fixed do.

The first fixing member 30 having a cylindrical shape is formed with a latch pin groove 32 into which a latch pin 62 is inserted and a center rod hole 31 into which a top end of the center rod 60 is inserted. The first fixing member 30 inserted into and fixed to the first sleeve 11 is inserted up to the upper portion of the second sleeve 21 so that the engagement between the door frame plate 10 and the door plate 20 is not separated .

The third fixing member 40 having a cylindrical shape is provided with a stopper 43 at an upper portion and a center bar hole 41 into which a lower end of the center bar 60 is to be inserted and an upper end of a screw rod 80 The screw bar hole 42 to be fixed is formed in an angular shape. Since the third fixing member 40 inserted and fixed to the third sleeve 12 is inserted into the lower portion of the second sleeve 21 and the upper portion of the fourth sleeve 22, And the engagement of the door plate 20 with each other.

The fifth fixing member 50, which is cylindrical, forms a screw groove on the inner surface thereof to which a spring compression member 110, which will be described later, is to be screwed. The fifth fixing member 50 inserted and fixed to the fifth sleeve 13 is inserted into the lower portion of the fourth sleeve 22 so that the door frame 10 and the door plate 20 ) From being separated from each other.

The long bar-shaped center bar 60 forms a latch 61 on the upper outer surface. Since the upper end of the center bar 60 is inserted into the center hole 31 of the first fixing member 30 and the lower end thereof is not fixed to be inserted into the center hole 41 of the third fixing member 40, Do.

7, the wide one is inserted and fixed in the latch pin groove 32 of the first fixing member 30 and the narrow one is inserted into the latch pin groove 32 of the center pin 60 And is engaged with the latch 61. Due to the latching engagement of the latch 61 and the latch pin 62, the center rod 60 is fixed only in the direction in which the door is opened (Fig. 7B) 7 A)

A cylindrical deceleration member 70 has an upper pin 71 protruding from its upper portion and a magnet 73 inserted therein and a lower pin 72 protruding from its lower portion to form a center bar through hole 74 at its center, 60 are inserted. When the door is closed, the decelerating member lever 21-1 is rotated by pushing the upper pin 71. At this time, since the center bar 60 is fixed by the latching engagement, A frictional force is generated between the members 70 to decelerate the door closing speed.

The structure of the decelerating member 70 will be described in more detail as follows. 9A), the decelerating member 70 is integrally formed in a cylindrical shape with an upper pin (not shown) integrally with the decelerating member 70, and the decelerating member 70 can be constituted by three embodiments as shown in Fig. 9. In the first embodiment 71 are protruded and a magnet 73 is inserted and a lower pin 72 is protruded and formed at the lower part and a center bar through hole 74 into which the center bar 60 is inserted is formed at the center. The size of the center bar through hole 74 is slightly smaller than the outer diameter of the center bar 60 so that a frictional force is generated between the center bar 60 and the decelerating member 70 when the decelerating member 70 rotates. In this embodiment, the deceleration member 70 is made of a resin material.

9B), the deceleration member 70 has a cylindrical shape with a lower pin 72 protruding from its lower portion, forming a center bar through-hole 74, forming a space therein, .

A plurality of urging members p that come in contact with the center bar 60 passing through the decelerating member 70 are formed in the inner space and a plurality of bolts b are inserted outside the decelerating member 70, (p) toward the center rod.

That is, since the pressing member p presses against the center bar 60, a frictional force is generated between the center bar 60 and the pressing member p when the speed reducing member 70 rotates. A screw groove is formed in the hole of the speed reduction member 70 through which the bolt b passes, so that the threaded bolt b presses the pressing member p and maintains the state.

An upper pin 71 is protruded from the upper part of the lid c and a magnet 73 is inserted into the upper part of the lid c to form a center bar through hole 74 So that the center bar 60 penetrates.

The first and second embodiments of the deceleration member 70 described above are the same in that the deceleration member 70 directly presses the center bar 60 to generate friction.

9C), the deceleration member 70 has a cylindrical shape with a lower pin 72 protruding from its lower portion, forming a center bar through-hole 74, and forming a space therein, As shown in Fig. At this time, the size of the center bar through-hole 74 is made smaller than the outer diameter of the center bar 60 to have airtightness.

A wing member w is fixed to the inner space by being inserted into a center bar 60 penetrating the decelerating member 70. The wing member w is formed with a plurality of blades. Then, oil is poured into the inner space to fill it.

The lid c is inserted into the opening of the decelerating member 70 to seal the lid c so that the oil does not leak. An upper pin 71 protrudes from the lid c and a magnet 73 is inserted. A hole 74 is formed to allow the center bar 60 to penetrate. The center-shaft through hole 74 has the same airtightness as that under the deceleration member 70.

The third embodiment of the decelerating member 70 constructed as described above does not directly press the center bar 60 against the decelerating member 70, unlike the other two embodiments. When the center rod 60 rotates, the wing member w rotates, and the wing stirs the oil to generate a resistance force. Thus, the detailed description of the embodiment of the deceleration member 70 is completed.

On the other hand, the long bar-shaped screw rod 80 is formed in an angular shape rather than a circular shape so that a thread groove is formed on the outer surface thereof and an upper end thereof is inserted and fixed in the screw rod hole 42 of the third fixing member 40. The upper end of the screw rod 80 is inserted into the screw rod hole 42 of the third fixing member 40 and the lower end of the screw rod 80 is inserted into the screw rod hole 111 of the spring compression member 110 to be described later.

The cylindrical nut 90 has a screw thread corresponding to the screw groove of the screw rod 80 formed on the inner surface thereof and a slide groove 91 formed vertically on the outer surface thereof. The slide groove 91 is engaged with the nut lever 22-1 of the fourth sleeve 22. The nut 90 is screwed into the screw rod 80.

The spring compression member 110 is formed on the outer surface thereof with a screw thread screwed into the screw groove of the fifth fixing member 50 and has a screw bar hole 111 into which a lower end of the screw rod 80 is inserted, . At this time, the screw rod hole 111 does not form a screw thread, and the inserted screw rod 80 loosens.

The spring 100 is a compression spring located between the nut 90 and the spring compression member 110. When the nut 90 is lowered as the door is opened and compressed, The spring is suitable.

The inventive hinge of the above construction is assembled as follows. The second sleeve 21 is positioned between the first sleeve 11 and the third sleeve 12 and the fourth sleeve 22 is positioned between the third sleeve 12 and the fifth sleeve 13, The door plate 10 and the door plate 20 are engaged and the door plate 10 and the door plate 20 are opposed to each other (0 degrees).

The first fixing member 30 is inserted and fixed to the first sleeve 11 after the latch pin 62 is inserted into the latch pin groove 32 of the first fixing member 30. At this time, since the fixing method can be implemented by various technically suitable methods such as bolt or pin insertion from the outside or welding the contact portion between the first sleeve 11 and the first fixing member 30 exposed to the outside, References are omitted.

The deceleration member 70 is inserted into the center bar 60 and then the upper end of the center bar 60 is inserted into the center hole 31 of the first fixing member 30. [ At this time, the latch pin (61) of the center rod (60) engages with the lock pin (62).

And the third fixing member 40 is inserted and fixed to the third sleeve 12. At this time, the lower end of the center bar 60 is inserted into the center hole 41 of the third fixing member 40, and the stop pin 43 and the lower pin 72 are separated from each other.

The nut 90 is screwed into the screw rod 80 and then the upper end of the screw rod 80 is inserted and fixed in the screw rod hole 42 of the third fixing member 40. [

The spring 100 is inserted under the nut 90 after the spring compression member 110 is inserted and screwed into the fifth fixing member 50 and the fifth fixing member 50 is inserted into the fifth sleeve 13 Fixed. At this time, the lower end of the screw rod 80 is inserted into the screw rod hole 111 of the spring compression member 110.

Finally, the deceleration member lever 21-1 is inserted and fixed on the upper portion of the second sleeve 21, and the nut lever 22-1 is inserted and fixed on the upper portion of the fourth sleeve 22. [ The deceleration member lever 21-1 must be inserted into a position where it is in contact with the upper pin 71 of the deceleration member 70 and is affected by the magnetic force of the magnet 73 and the nut lever 22-1 is inserted into the nut 90 In the slide groove 91 of the slide fastener. Thus, the assembling of the hinge of the present invention is completed.

The hinge of the present invention having the above configuration is operated as follows. As shown in Fig. 4 (0) and Fig. 6 (A-1) and (B-1), when the door is completely closed, the deceleration member lever 21-1 and the upper pin 71 are in contact , The deceleration member lever 21-1 is positioned just above the magnet 73. [ The lower pin 72 does not come into contact with the stopper 43. On the other hand, the nut 90 is raised to the highest position by the nut lever 22-1 coupled to the slide groove 91, and thus the spring 100 is not compressed.

When the door starts to be opened, the door leaf 20 rotates in the door opening direction, and the deceleration member lever 21-1 also rotates. Because the deceleration member lever 21-1 is made of iron, due to the magnetic force of the magnet 73 The deceleration member 70 also tries to rotate along the deceleration member lever 21-1. However, when the decelerating member 70 is rotated, the center bar 60 also rotates due to the friction between the decelerating member 70 and the center bar 60. The center bar 60 is not fixed to the first fixing member 30 or the third fixing member 40 and the center bar 60 is not fixed to the first fixing member 30 or the third fixing member 40. However, Since the coupling rod 60 is allowed to rotate in the direction in which the door is opened, consequently, both the deceleration member 70 and the center rod 60 rotate without resistance. On the other hand, since the nut lever 22-1 also rotates in the door opening direction, the nut 90 also rotates. Since the nut 90 is screwed with the screw rod 80, the nut 90 rotates and descends, thereby compressing the spring 100.

During the opening of the door, as shown in Fig. 4 (30) and Fig. 6 (A-2) and (B-2), when the lower pin 72 reaches a fixed angle, The holding and decelerating member 70 and the center rod 60 stop rotating. Since the magnetic force of the magnet 73 acting on the decelerating member lever 21-1 caused the rotation of the decelerating member 70 up to this time, if the door is opened with a force stronger than the magnetic force, (A-3) and (B- 3, only the door plate 20 rotates, and the decelerating member 70 maintains the stopped position. Thereafter, since there is no action between the door plate 20 and the decelerating member 70, the door plate 20 is rotated without resistance.

When the door is further opened, the nut 90 is continuously lowered, so that the nut lever 22-1 is moved out of the slide groove 91 as shown in FIG. 5, and the nut 90 stops rotating and falling. However, since the user keeps opening the door, the nut lever 22-1 continues to rotate in a state of being raised on the nut 90. Since the nut lever 22-1 is positioned above the nut 90, The nut 90 is restrained from rising by the restoring force of the nut 100. [ When the nut lever 22-1 moves out of the slide groove 91, the lowering of the nut 90 and the compression of the spring 100 are stopped and the door plate 20 is rotated by the spring 100 ). In this state, the door does not automatically close when the user releases the door.

The operation of the door of the invention hinge has been described so far. The process of closing an open door is as follows. 3 and 5, the hinge of the present invention is located such that the deceleration member lever 21-1 and the upper pin 71 are far away from each other and the lower pin 72 is located at the stop pin 43 The nut lever 22-1 comes out of the slide groove 91 and comes into contact with the upper part of the nut 90 and the spring 100 is kept in the compressed state as much as possible.

When the door starts to be closed by the user, the door plate 20 rotates in the closing direction without any resistance. When the nut lever 22-1 is first engaged with the slide groove 91, The nut 90 is raised by the restoring force. The nut 90 is raised and the door is rotated in the closing direction so that the nut lever 22-1 is also rotated so that the door plate 20 rotates in a direction in which the door is closed. That is, when the nut lever 22-1 is engaged with the slide groove 91, the nut plate 90 is rotated up by the restoring force of the spring 100, and the door plate 20 is automatically closed.

If the nut lever 22-1 is released from the slide groove 91 by opening the door wide, the user must close the nut lever 22-1 and the slide groove 91 slightly. However, if the nut lever 22-1 is not released, As soon as the hand is released, the door is closed by the restoring force of the spring 100. This is a closure function of the hinge of the present invention.

The door plate 20 is rotated without any resistance until the door starts to be closed and the decelerating member lever 21-1 comes into contact with the upper pin 71. When the deceleration member lever 21-1 reaches a certain angle, The deceleration member 70 rotates due to contact with the upper pin 71. Unlike the situation in which the door is opened previously, since the center rod 60 is fixed due to the latch engagement and can not rotate, only the deceleration member 70 . At this time, a frictional force is generated between the decelerator 70 and the center rod 60, and this frictional force acts as a resistance for decelerating the door closing speed. That is, the deceleration member 70 and the center rod 60, which have no resistance, rotate together in the direction in which they are opened. However, since the deceleration member 70 alone rotates without the center rod 60 rotating in the closing direction, It happens. This is the damper function of the hinge of the present invention. With this damper function, the door closing speed can be reduced and even stopped, but if the spring 100 is strong enough, the door closes completely by the closing function.

In addition, although the latch 61 and the latch pin 62 are used in the present embodiment in order to implement the one-way clutch in which the center rod 60 rotates in the opening direction but does not rotate in the closing direction , Or a conventional one-way clutch bearing may be used.

Finally, as shown in FIG. 8, the pressure of the spring 100 can be adjusted by raising or lowering the spring compression member 110 screwed with the fifth fixing member 50. 8 (R) shows a state in which the spring 100 is not compressed at all by lowering the spring compression member 110, so that even if the door is opened wide, the spring 100 does not touch the nut 90, It does not. That is, it is equivalent to canceling the closure function.

8 (P) shows a state in which the spring 100 is further compressed by raising the spring compression member 110. In general, as the compression spring is compressed, the force required for compression increases and the restoring force becomes strong. (Door closing speed). If a hexagonal wrench groove or the like is formed in the lower portion of the spring compression member 110, the user can control the pressure of the spring 100 using a tool such as a hexagonal wrench.

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 will be obvious that it falls within the scope of.

10: door frame plate 11: first sleeve
12: third sleeve 13: fifth sleeve
20: door plate 21: second sleeve
21-1: Deceleration member lever 22: Fourth sleeve
22-1: nut lever 30: first fixing member
31: center hole 32: latch pin groove
40: third fixing member 41: central rod hole
42: screw rod hole 43: stop jaw
50: fifth fixing member 60: center rod
61: latch 62: latch pin
70: deceleration member 71: upper pin
72: lower pin 73: magnet
74: center through hole 80: screw rod
90: Nut 91: Slide groove
100: spring 110: spring compression member
111: Screw rod hole

Claims (4)

A first sleeve and a third sleeve are formed on one side of the door frame plate, a second sleeve is formed on one side of the door plate, and a hinged plate and a door plate are coupled so that the second sleeve is positioned between the first and third sleeves In this case,
A reduction member lever protruding inward from an upper portion of the second sleeve; A first fixing member formed with a latch pin groove and a center bar hole in the lower portion and inserted and fixed in the first sleeve; A latch pin inserted into the latch pin groove of the first fixing member; A third fixing member formed with a stop jaw and a central bore hole at an upper portion thereof and fixedly inserted into the third sleeve; A center rod having a latch formed on an upper outer surface thereof and having an upper end inserted into the center hole of the first holding member and a lower end inserted into the center hole of the third holding member; And a decelerating member formed with an upper pin at an upper portion thereof, a magnet inserted therein, a lower pin formed at a lower portion thereof, and a center bar through hole formed at a center thereof to be fitted into the center bar. A third sleeve and a fifth sleeve are formed on one side of the door frame plate, a fourth sleeve is formed on one side of the door plate, and a hinged plate and a door plate are coupled so that the fourth sleeve is positioned between the third and fifth sleeves In this case,
A nut lever protruding inward from an upper portion of the fourth sleeve; A third fixing member formed with a screw hole at the bottom and inserted and fixed in the third sleeve; A fifth fixing member having a screw groove formed on an inner surface thereof and inserted and fixed in a fifth sleeve; A spring compression member having a center hole at its center and a screw thread at its outer surface to be screwed with the fifth fixing member; A screw rod having a screw groove formed on an outer surface thereof, an upper end inserted into a screw rod hole of the third fixing member, and a lower end inserted into a screw rod hole of the spring compression member; A nut having a slide groove formed on an outer surface thereof and a screw thread formed on an inner surface thereof and screwed to the screw rod; And a spring positioned between the nut and the spring compression member. The method according to claim 1,
A lower pin and a center bar through hole are formed in the lower portion; Forming an opening in the upper portion by forming a space therein; A plurality of pressing members positioned in the inner space and contacting the center bar passing through the center bar through-hole; A plurality of bolts inserted outside and urging the pressing member; And a lid formed with an upper pin at an upper portion thereof, a magnet inserted therein, and a center bar through hole formed therein, the lid being inserted and fixed in the opening. The method according to claim 1,
A lower pin and a center bar through hole are formed in the lower portion; Forming an opening in the upper portion by forming a space therein; A wing member which is located in the inner space and is fixed to the center bar passing through the center bar through hole and formed with a plurality of blades; Oil injected into the inner space; And a lid formed with an upper pin at an upper portion thereof, a magnet inserted therein, and a center bar through hole formed therein, the lid being inserted and fixed in the opening.

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