KR200366450Y1 - Floor hinge - Google Patents

Abstract

The present invention relates to a floor hinge, and more specifically, a cam and a shock absorber are formed in the casing of a substantially rectangular box shape, which are interlocked by a hinge axis. A floor hinge for a door configured to be closed is related to a floor hinge for smoothly and slowly closing a door by the action of oil between a hollow piston member and a cylinder member.

Description

Floor hinge {Floor hinge}

The present invention relates to a floor hinge for a door, and more particularly, to a floor hinge, which is configured to greatly reduce the length of the main body by more than half compared to a conventional floor hinge. In general, the door of the building is provided with a door that can open and close the door freely in one direction or in both directions, the door is provided with a hinge device for restoring to the closed state by its elasticity after the door is opened by an external force. The hinge device is widely used to be constructed in the form of a hinge at the center of the door or to be buried in the lower floor of the door. Here, what is buried in the floor and constructed is generally referred to as a floor hinge. The conventional floor hinge has a hinge shaft which is connected to the lower end of the door and rotates inside the rectangular casing, and the piston, which is revolving dependently according to the rotation of the hinge shaft, is connected to the piston rod and is long and disposed in one direction. The piston rod is formed by being fitted to a return spring of a mounting type.

The floor hinge device arranged in the longitudinal direction as described above has a configuration in which the return spring and the piston are operated by the long piston rod, so that the length of the casing naturally becomes long in the longitudinal direction, and thus the floor hinge during construction Owing to the increase of the occupied area, all parts are made of metal, and the required amount of metal increases as the length increases, which makes the weight considerably heavy, making the production, transportation and construction work inconvenient.

Meanwhile, a floor hinge as shown in FIGS. 1 to 5 has been proposed as an improved floor hinge. According to FIG. 1, the hinge shaft 10 protrudes from the inside of the substantially rectangular casing 100 to the outside. Hinge shaft 10 is a lower end is fitted to the housing formed on the bottom of the casing 100 and the upper end is inserted into a hole formed in the lid 110 to be rotatably fixed, the protruding upper end is coupled to the door (not shown) . The lower surface of the lid 110 is formed with a bearing groove 112 for fitting a bearing (not shown) to reduce the friction force when the hinge shaft 10 is rotated.

As shown in FIG. 5, the hinge shaft 10 is fitted with a plurality of bolts 70 coupled to each other by a plurality of bolts 70 and an upper plate 20 and a lower plate 30 having a working hole 24 formed in a lengthwise direction. At this time, the roller (72) is fitted in the bolt 70 to the upper plate 20 and the lower plate 30 to maintain a predetermined interval. In addition, a cam 60 is fitted between the upper plate 20 and the lower plate 30, but the cam 60 is fixed to the hinge shaft 10. 3 and 4 show the shape of the cam.

On the other hand, the "T" shaped plate is bent to form a support member 40 formed with the coupling portion 48 and the fixing portion 46, the coupling portion 48 is coupled to the front end of the lower plate (30). In this case, the support member 40 is formed so that the fixing part 46 having the screw holes 42 formed on both sides thereof protrudes outward from the lower plate 30.

The piston rod 51 extending from the shock absorber 50 separately formed in the screw hole 42 formed as described above is screwed and fixed firmly, and the rear of the shock absorber 50 is fitted to the rear of the casing 100. It is supported and fixed by the support bolt 54. At this time, the support bolt (54) is formed with a projection (55) and the shock absorber (50) is formed in the fitting hole for the projection (55) is fitted, the projection (55) is the rear of the support bolt (54) The movement is interrupted by being fitted into the fitting hole.

Here, the shock absorber fitted between the fixing part 46 and the support bolt 54 has been proposed a hydraulic cylinder, gas shock absorber (gas shock absorber).

In addition, a pair of rail grooves 44 are formed at a lower end of the fixing part 46 at predetermined intervals, and the bottom of the casing 100 corresponding to the rail grooves 44 has a rail 108 protruding therefrom. The rail flaw 44 is mounted on the rail 108 so as to be slidably movable.

When the user opens the door coupled to the hinge shaft 10, the hinge shaft 10 is rotated accordingly, as shown in FIG. 4, the cam 60 fixed to the hinge shaft 10 rotates and the roller 72 is rotated. Will push. At this time, the upper plate 20 and the lower plate 30 is pushed backward along the operating hole 24 and at the same time firmly fixed to the fixing portion 46 of the support member 40 coupled to the lower plate 30 50 will be compressed.

After the door is released, the shock absorber 50 is operated to push the lower plate 30 coupled with the support member 40, and at the same time, the roller fitted to the bolt 70 coupling the upper plate 20 and the lower plate 30. 72 rotates the cam 60 to return to the original position, which causes the door to automatically close as the hinge shaft 10 is rotated to its original position.

The present invention improves the casing internal structure of the floor hinge to provide a floor hinge whose working effect is the same or at least improved compared to the prior art, while its volume is significantly smaller, thereby obtaining a floor hinge that is easy to produce, transport and install. have.

Meanwhile, an object of the present invention is to provide a floor hinge that smoothly and slowly closes when the door is closed by improving the casing internal structure of the floor hinge.

On the other hand, an object of the present invention is to provide a floor hinge that is easy to manufacture and the manufacturing cost is reduced by improving the inner structure of the floor hinge.

1 to 5 are schematic diagrams of conventional floor hinges.

Figure 6 is an exploded view of one embodiment of the floor hinge of the present invention,

7 is a schematic view of one embodiment of the floor hinge of the present invention,

Fig. 8 is a schematic diagram of excerpts of the floor hinge of the present invention. Fig. 9 is a perspective schematic view of a part of the floor hinge of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: hinge shaft, 20: top plate, 22: rod, 30: bottom plate, 40: support member, 45: bolt, 50: shock absorber, 51: piston rod, 52: support bolt, 60: cam, 72: roller. 80: plug portion, 90: hollow piston member, 98: cylinder member, 100: casing, 120: guide portion

The present invention relates to a floor hinge having a cam (60) coupled to a hinge shaft (10) inside a casing of a substantially rectangular box shape, which is buried in the bottom building floor of the door, and protrudes from the inside of the casing (100) to the outside. The upper plate 20 and the lower plate 30, which are inserted into the hinge shaft 10 and are movable in the longitudinal direction by the operation of the cam 60, have a bent plate shape having a fixing portion 46 and a support portion 48 formed thereon. It is provided with a support member 40, the coupling portion 48 is coupled to the front end of the lower plate 30, the fixing portion 46 having a plurality of screw holes 42, 43 is formed outside the lower plate 30 And a pair of piston rods 51 extending from the shock absorber 50 separately formed in the pair of threaded holes 42, the hollow piston member 90 in the threaded hole 43. ) Is screwed on, the rear of the shock absorber 50 is fixed to the casing, the seal on one side of the casing The lining member 98 is formed, and when the door is opened, the hinge shaft 10 is rotated so that the piston rod is interlocked while the cam 60 rotates to compress the shock absorber and the shock absorber of the shock absorber. The piston rod is restored to its original state by a restoring force, and the hollow piston member 90 is inserted into the cylinder portion 99 of the cylinder member 98 while the door is closed by rotating the hinge shaft in reverse. The oil passage 130 is formed at one side of the floor hinge to prevent the door from being suddenly closed by the oil between the hollow piston member 90 and the cylinder portion 99 of the cylinder member 98. .

Since the steel ball 94 is coupled to the hollow of the piston member 90, oil is prevented from flowing back to the support member 40 while the door is closed, and the casing lid 110 includes the piston member 90. Guide portion 120 for guiding is formed and the rear of the shock absorber 50 is preferably screwed to the stopper portion 80 coupled to the casing.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings of FIGS. 6 to 9.

6 is a view showing an embodiment of the present invention. The guide part 120 is formed in the lower lid 110 of the casing 100 so that the hollow piston member 90 is inserted into the hollow 122 of the guide part so that one end of the hollow piston member is fixed to the support member 40. It is screwed to the screw hole 43 additionally formed in the government (46). As a result, the hollow piston member coupled to the fixed part is coupled to the fixed part and moved together with the fixed part, and guided by the guide part 120 to perform a linear reciprocating motion that does not move from side to side. That is, as the door is opened, the cam 60 rotates to push the roller 72 so that the upper plate 20 and the lower plate 30 to which the roller 72 is coupled move together and the support member coupled to the upper plate and / or the lower plate. 40 is moved in conjunction with the hollow piston member 90 coupled to the additional screw hole 43 formed in the fixing portion 46 of the support member is also moved in conjunction. According to the illustrated embodiment, the coupling portion 48 of the support member between the upper plate and the lower plate is coupled to the upper plate and the lower plate by the bolt 45 at the same time, but may be coupled to only one of the upper plate or the lower plate. 9A shows a perspective view in which a supporting member is coupled to an upper plate and a lower plate, a hollow piston member 90 is coupled to a lower plate, and a shock absorber 50 is coupled to both sides of the lower plate.

The hollow piston member is composed of a hollow tube as shown in Figure 9b, one side 93 of the hollow tube, that is, the part facing the screw hole 43 side is smaller in the inner diameter and the other side portion 95 is larger than the inner diameter Formed. It is preferable that the steel balls 94 are fixedly coupled to a portion having a large inner diameter by a coupling pin 92 or the like. A portion of the outer circumferential surface of the hollow piston member is preferably screwed to the threaded hole 43 as shown in the figure.

The cylinder member 98 is coupled to the casing on one side of the hollow piston member in the moving path direction. 9C is a perspective schematic view of the cylinder member. At least one oil jet port 130 is formed in the cylinder member, as shown. Of course, it is preferable to include the O-ring 96 or the like in the middle when the cylinder member is coupled to the casing to prevent the oil in the casing from leaking out.

When the door is opened and closed by the restoring force of the shock absorber 50, the hollow piston member 90 is moved to the cylinder member 98 side and eventually inserted into the cylinder portion 99 formed in the cylinder member. The oil between the steel balls 94 of the hollow piston member and the cylinder portion 99 of the cylinder member is then compressed to act as a force to prevent the door from closing quickly. The steel ball moves to the rear, that is, the screw hole 43 side by the force of the oil, thereby closing the boundary between the portion 93 of the inner diameter of the hollow piston member and the portion 95 of the large inner diameter, thereby preventing the oil from flowing backward. do.

In order to adjust the door to be closed at an appropriate speed, the oil trapped between the steel ball 94 of the hollow piston member and the cylinder portion 99 of the cylinder member may be adjusted in size. In the present invention, as shown in FIG. 7, at least one oil jet port 130 is formed in the cylinder member to allow oil to move through the oil passage 140 connected thereto. On the other hand, as shown in Figure 6 it is preferable to be able to adjust the width of the oil passage by the oil bolt 150 is inserted from the outside of the casing.

The oil bolt 150 is simply formed with a groove 152 widening toward the end on one side of the side end, and can be configured as shown in FIG. 8 so that the width of the oil passage becomes narrower as the oil bolt is rotated and inserted.

Meanwhile, as shown in FIG. 6, the rear end of the shock absorber is not directly screwed to the casing body, but the stopper 80 is once screwed to the screw 83 formed on the casing body and the screw hole 81 is attached to the stopper itself. It is preferable to form a screw thread 52 is formed on one side of the shop-up bar 50 is screwed to this. This is because it is much more difficult to process such a work on the casing body itself than to work on a small part called the stopper 80 in the work of precisely machining the screw coupled with the shock absorber.

The present invention is devised to solve the above problems, and improves the casing internal structure of the floor hinge so that its effect is the same or at least improved compared to the prior art, the volume is significantly smaller.

On the other hand, the present invention has an effect of improving the casing of the floor hinge so that the door is always closed at a constant speed without sudden closure by the action of oil between the hollow piston member and the cylinder member.

Meanwhile, the present invention improves the internal structure of the casing of the floor hinge, thereby facilitating manufacturing and reducing manufacturing costs.

Claims (4)

In the floor hinge having a cam (60) coupled to the hinge shaft (10) inside a casing of a substantially rectangular box shape, which is embedded in the bottom building floor of the door. The upper plate 20 and the lower plate 30 which are inserted into the hinge shaft 10 protruding from the inside of the casing 100 to the outside and movable in the longitudinal direction by the operation of the cam 60 are provided, and the fixing unit 46 and With a bent plate-shaped support member 40 having a support portion 48 formed therein, the coupling portion 48 is coupled to the front end of the lower plate 30, and a plurality of screw holes 42 and 43 are formed. The government part 46 is formed to protrude to the outside of the lower plate 30, a pair of piston rod 51 extending from the shock absorber 50 formed separately in the pair of screw holes 42 is coupled, The hollow piston member 90 is screwed to the screw hole 43, the rear of the shock absorber 50 is fixed to the casing, the cylinder member 98 is formed on one side of the casing, and when the door is opened As the hinge shaft 10 is rotated so that the cam 60 rotates, the piston rod is interlocked to move the shock absorber. r) is compressed and the piston rod is restored to its original state by the restoring force of the shock absorber, and the hollow piston member 90 is the cylinder portion 99 of the cylinder member 98 while the door is closed by rotating the hinge shaft in reverse. It is formed to be inserted into, one side of the cylinder member is formed by the oil passage 130 by the oil between the hollow piston member 90 and the cylinder portion 99 of the cylinder member 98 the door is suddenly Prevented from closing Floor hinge. The method of claim 1, A steel ball 94 is coupled to the hollow of the piston member 90 so that oil is prevented from flowing back toward the support member 40 while the door is closed. Floor hinge. The method according to claim 1 or 2, The lid 110 of the casing is formed with a guide portion 120 for guiding the piston member 90 Floor hinge. The method of claim 1, The rear of the shock absorber 50 is characterized in that the screw is coupled to the stopper portion 80 is coupled to the casing Floor hinge.