KR200300592Y1 - Pivot Hinge for Door and Bearing for Pivot Hinge - Google Patents

Abstract

Since the hinge shaft and the bearing are integrally combined, the door frame member fixed to the door frame and the shaft insertion hole is formed to securely prevent the separation or omission of the bearing, and the door hinge member fixed to the door and the shaft support hole is formed. A hinge shaft inserted into the shaft insertion hole of the door frame hinge member and the shaft support hole of the door hinge member to rotatably support the door hinge member to the door frame hinge member and having a coupling groove formed therein; A ring is installed therein and is provided between the door frame hinge member and the door hinge member to provide a pivot hinge for the door including a bearing in rolling contact.

And a plurality of balls, a retainer for supporting a plurality of balls, a pair of first and second wheels surrounding and protecting the plurality of balls and retainers, and installed between an inner surface of the first wheel and an inner surface of the second wheel. Provided are bearings for pivoting hinges including retaining rings.

Description

Pivot Hinge for Door and Bearing for Pivot Hinge

The present invention relates to a pivot hinge for a door and a bearing for a pivot hinge, and more particularly, a fixing ring is installed inside the bearing to conveniently and securely fix the hinge shaft. The present invention relates to a pivot hinge for a door and a bearing for a pivot hinge, which can prevent the bearing from detaching.

In general, steel doors used for fire doors or front doors are heavy so that hinges can be installed at the top and bottom to open and close the doors.

Hinge for opening and closing the conventional door in the door frame is installed in a pair in the upper and lower, fixed to the door frame and the hinged shaft is inserted into the door frame mounting plate is formed in the door insertion plate is formed It consists of a door attachment plate in which a shaft support hole is formed.

Recently, many structures are used to install bearings between the door frame mounting plate and the door mounting plate so that the opening and closing operation of the door is smoothly performed. Especially in the case of connecting the door and the lower part of the door frame, the bearing is mainly used.

Korean Utility Model Publication No. 1996-5796 describes an example of a pivot hinge using a bearing. That is, Korean Utility Model Publication No. 1996-5796 discloses a structure in which a step is formed in the hinge shaft in order to prevent the bearing from being separated or dropped, and a structure in which the position of the bearing is fixed by inserting a ring in the hinge shaft.

Since the hinge shaft and the bearing are not securely fixed even in the case of the conventional pivot hinge as described above, if the hinge shaft is accidentally detached from the shaft insertion hole of the door frame mounting plate during the assembly of the door to the door frame, the bearing There is a risk of coming off the hinge shaft.

An object of the present invention is to solve the problems as described above, since the fixing ring is inserted into the coupling groove formed in the hinge shaft by installing a fixing ring inside the bearing to integrally couple the hinge shaft and the bearing integrally. It is to provide a pivot hinge for the door that can prevent the bearing from falling off or missing.

And another object of the present invention is for pivot hinge to be integrally coupled by inserting the fixing ring is inserted into the coupling groove of the hinge shaft when the hinge shaft is inserted by installing a fixing ring between the inner surface of the first wheel and the inner surface of the second wheel. To provide a bearing.

1 is an exploded perspective view showing an embodiment of a door hinge hinge according to the present invention.

Figure 2 is a partially enlarged cross-sectional view showing a state in which the hinge shaft and the bearing in the embodiment of the pivot hinge for the door according to the present invention.

Figure 3 is a cross-sectional view showing an embodiment of a bearing for pivot hinge according to the present invention.

Figure 4 is a perspective view showing one embodiment of a fixing ring according to the present invention.

The door pivot hinge proposed by the present invention is a door frame hinge member fixed to the door frame and the shaft insertion hole is formed, a door hinge member fixed to the door and the shaft support hole is formed, the shaft insertion hole of the door frame member and A hinge shaft inserted into the shaft support hole of the door hinge member to rotatably support the door hinge member to the door frame hinge member and having a coupling groove formed therein, and a fixing ring inserted into the coupling groove of the hinge shaft. It is installed between the door frame hinge member and the door hinge member is installed inside and comprises a bearing in contact with the rolling.

The door hinge member is formed in a shape corresponding to a door attachment plate in which one side is fixed to the door and a shaft support hole is formed on the protruding side, and a portion protruding from the door of the door attachment plate and to reinforce strength. And a door reinforcing plate integrally fixed to the door mounting plate and having a shaft support hole corresponding to the shaft support hole of the door mounting plate.

And the bearing for pivot hinge proposed by the present invention is a plurality of balls, a retainer for supporting the plurality of balls, a pair of the first wheel and the second wheel to wrap and protect the plurality of balls and retainers, and It includes a fixing ring installed between the inner surface of the first wheel and the inner surface of the second wheel.

Next, a preferred embodiment of a pivot hinge for a door and a pivot hinge bearing according to the present invention will be described in detail with reference to the accompanying drawings.

First, one embodiment of the door pivot hinge according to the present invention, as shown in Figures 2 to 3, the door frame hinge member 20 is fixed to the door frame 4 and the shaft insertion hole 21 is formed, and the door ( 2) a door hinge member 10 fixed to the shaft support hole 13, a shaft insertion hole 21 of the door frame hinge member 20, and a shaft support hole of the door hinge member 10. A hinge shaft 26 inserted into the hinge shaft 26 to rotatably support the door hinge member 10 to the door frame hinge member 20 and to form a coupling groove 27, and the hinge shaft 26. The fixed ring 38 is inserted into the coupling groove 27 of the) is installed therein and is installed between the door frame hinge member 20 and the door hinge member 10, including a bearing (30) for rolling contact Is done.

The door frame hinge member 20 is formed in a substantially "L" shape, the vertical portion is fixed to the door frame 4, the horizontal portion is formed with a shaft insertion hole 21 into which the hinge shaft 26 is inserted.

Although not shown in the figure where the vertical portion and the horizontal portion of the door frame hinge member 20 meet, it is also possible to form one or more ribs to reinforce the bending strength.

The door frame hinge member 20 may be fixedly installed on the lower side or the upper side of the door frame 4 by using a bolt or a small screw, or may be integrally fixed by welding or the like.

The door hinge member 10 has a door mounting plate 11 having one side fixed to the door 2 and a axial support hole 13 formed at the protruding side thereof, and a door of the door mounting plate 11. Shaft support formed in a shape corresponding to the portion protruding from 2) and integrally fixed to the door mounting plate 11 for reinforcing strength, and corresponding to the shaft support hole 13 of the door mounting plate 11. And a door reinforcing plate 14 in which a hole 13 is formed.

The door hinge member 10 conceals a line where the door reinforcing plate 14 and the door mounting plate 11 come into contact with each other to make the aesthetic appearance beautiful and to prevent foreign substances such as dust from entering the coupling part. It further comprises a door cover 16 which is installed on the upper side of the reinforcing plate (14).

The door cover 16 is fixedly installed to the door reinforcing plate 14 and the door mounting plate 11 by using a small screw 18 or the like. The door cover 16 is provided with a fastening hole 17 for fastening the small screw 18.

The door attachment plate 11 is fixedly installed on the upper or lower surface of the door 2 using fixing members 12 such as bolts or small screws.

In addition, the door attachment plate 11 can be fixedly installed on the door 2 by welding or the like.

And one embodiment of the pivot hinge bearing 30 according to the present invention, as shown in Figure 3, a plurality of balls 36, retainers 35 for supporting the plurality of balls 36, and the A pair of first wheels 32 and second wheels 34 surrounding and protecting the plurality of balls 36 and retainers 35, and the inner surface and the second wheels 34 of the first wheels 32 described above. It comprises a fixing ring 38 is installed between the inner surface of the.

As shown in FIG. 4, the fixing ring 38 is formed in a cut shape to temporarily open outwardly. The fixing ring 38 is formed of a material having a predetermined elasticity so that it is possible to return to the original state when the force applied to the outside is removed. The fixing ring 38 may be configured by a snap ring or the like. The fixing ring 38 may be formed to have a cross section of various shapes such as a circle, a square, an ellipse, and the like.

The fixing ring 38 is formed by setting the inner diameter smaller than the outer diameter of the hinge shaft 26 to be inserted into the coupling groove 27 of the hinge shaft 26.

The hinge shaft 26 is formed in a cylindrical shape, and the end of one side (the side into which the shaft insertion hole 21 of the door hinge member 20 is inserted) has a locking jaw to maintain a constant depth of insertion. It is formed by the insertion portion 28 is formed so that the diameter is small.

Next, a process of rotatably coupling the door 2 to the door frame 4 by using an embodiment of the door pivot hinge according to the present invention will be described.

First, the door frame hinge member 20 is fixedly installed on the lower side of the door frame 4. The door reinforcing plate 14 is integrally fixed to the door mounting plate 11, and the door mounting plate 11 is fixed to the bottom surface of the door 2. In addition, the hinge shaft 26 is inserted into the bearing 30 so that the fixing ring 38 of the bearing 30 is inserted into the coupling groove 27 of the hinge shaft 26 so that the hinge shaft 26 and the bearing ( Assemble 30) integrally.

When the hinge shaft 26 is inserted into the bearing 30 in the above, the fixing ring 38 is temporarily extended outward as the hinge shaft 26 is inserted, and the coupling groove of the hinge shaft 26 ( When the 27 reaches the position of the fixing ring 38, the fixing ring 38 is inserted into the coupling groove 27 while returning to the original position by the elastic force of the fixing ring 38. Therefore, insertion of the hinge shaft 26 is stopped.

In the above state, the insertion portion 28 of the hinge shaft 26 in which the bearing 30 is integrally assembled is inserted into the shaft insertion hole 21 of the door frame hinge member 20, and the door mounting plate 11 And the hinge shaft 26 is inserted into the shaft support hole 13 of the door reinforcing plate 14.

Then, the door cover 16 is attached to the door reinforcing plate 14 and the door mounting plate 11 by using the small screw 18 to fix the door frame 16 to the door frame 4. (See Figure 2)

Although the above description is based on the bottom coupling of the door 2 and the door frame 4, it is also possible to simultaneously proceed to the upper coupling in the same process, and to perform the coupling to the lower side first, based on this coupling to the upper side It is also possible to carry out.

In the above description of the preferred embodiment of the door pivot hinge and the pivot hinge bearing according to the present invention, the present invention is not limited to this, but the utility model registration claims and the detailed description of the design and the scope of the accompanying drawings in various ways Modifications can be made and this also falls within the scope of the present invention.

According to the pivoting hinge for the door and the bearing for the pivot hinge according to the present invention made as described above, the hinge shaft and the bearing is integrally fixed by the fixing ring, the bearing may be missing or detached in the process of assembling the door to the door frame In addition, even if the door is removed from the door frame and reassembled in order to repair or replace the door or the door frame, there is no fear of losing the bearing, and the bearing replacement work that occurs due to the wear or damage of the bearing is made very easy. In particular, in the structure of fixing a bearing by inserting a conventional ring, the ring is so small that it may be easily lost during assembling or dismantling, and is difficult to find when it is lost. In this case, the machining of the stepped jaw on the hinge shaft precisely in accordance with the inner diameter of the bearing On the other hand, it is very difficult because of the small size, but in the case of the door pivot hinge and the pivot hinge bearing according to the present invention, since the retaining ring is assembled to the bearing, there is no fear of loss and the elasticity of the retaining ring even when there is a dispersion in the outer diameter of the hinge shaft. The bearing can be fixed by means of this, so you do not have to pay much attention to the processing accuracy.

And according to the pivot hinge for the door and the bearing for the pivot hinge according to the present invention, since the fixing operation of the hinge shaft and the bearing simply consists of inserting the hinge shaft into the bearing, the assembly operation is made simple and quick.

Claims (4)

A door frame hinge member fixed to the door frame and having a shaft insertion hole formed therein; A door hinge member fixed to the door and having an axial support hole formed therein; A hinge shaft inserted into the shaft insertion hole of the door frame hinge member and the shaft support hole of the door hinge member to rotatably support the door hinge member to the door frame hinge member and to form a coupling groove; The fixed ring is inserted into the coupling groove of the hinge shaft is installed inside the pivot hinge for the door comprising a bearing which is installed between the door frame hinge member and the door hinge member in contact with the cloud. The method of claim 1, wherein the door hinge member One side is fixed to the door and protruding side door mounting plate is formed with a shaft support hole, It is formed in a shape corresponding to the portion protruding from the door of the door mounting plate and is integrally fixed to the door mounting plate to reinforce strength, and the shaft support hole corresponding to the shaft support hole of the door mounting plate is formed. Door reinforcement plate, A door pivot hinge including a door cover installed on the upper surface of the door reinforcement plate to conceal a line that the door reinforcing plate and the door attachment plate abuts to aesthetically beautiful and to prevent foreign matter from entering the coupling portion. The method of claim 1, wherein the bearing is A number of balls, A retainer for supporting the plurality of balls described above; A pair of first and second wheels surrounding and protecting the plurality of balls and retainers; A pivot hinge for a door comprising a fixing ring installed between an inner surface of the first wheel and an inner surface of the second wheel. A number of balls, A retainer for supporting the plurality of balls described above; A pair of first and second wheels surrounding and protecting the plurality of balls and retainers; Bearing for pivot hinge comprising a fixing ring installed between the inner surface of the first wheel and the inner surface of the second wheel.