KR20040057561A - Floor hinge for a door - Google Patents

Abstract

PURPOSE: A floor hinge device for a door is provided to manufacture and construct easily, to improve the stability after installation and to improve processing efficiency of a cylinder for a casing and a damper. CONSTITUTION: The floor hinge device for a door comprises a transformed casing(1a), a hinge shaft(2), upper and lower operating plates(4a,4b), a transformed cylinder type damper(5a), a cam installed on the hinge shaft(2), a roller(11) installed between the working plates(4a,4b), and an operating plate return device(20). The upper operating plate(4a) is provided with a connecting piece(15) attached to the center of the front, and the operating plate return device(20) is composed of a front spring sheet(21) provided with perforated holes(22), a rear spring sheet(23), a pair of spring rods(24), a return spring(25) and a nut(26), and loaded on the upper operating plate(4a).

Description

Floor hinge device for doors {FLOOR HINGE FOR A DOOR}

The present invention relates to a door hinge device for a door that is easy to manufacture and install by reducing the length of the main body, and also has excellent stability over time after installation. At the entrance of the building, the door hinge is installed so that the door can be opened or closed in one direction or in both directions, and the opened door can be closed by its own elasticity.

As shown in FIG. 6, the conventional general floor hinge structure includes a hinge shaft 2 and a hinge shaft 2 installed at one side of the rectangular casing 1 in a longitudinal direction and connected to a lower end of the door to rotate. 3) A cylindrical damper consisting of a piston (6) and a cylinder (7), which are loosely fitted to the upper and lower operating plates (4,4 ') and retracted by the linear movement of the operating plate (4,4), which are retracted by the hinge shaft. (5), the return spring 8 and the mounting piston rod 9, which physically connect the operating plates 4, 4 'and the piston 6, are arranged in a single line arrangement structure. .

The cam 10 is provided on the hinge shaft 2 between the operating plates 4 and 4 ', and the cam 10 is provided on the operating plates 4 and 4' at both adjacent positions of the hinge shaft 2. The roller 11 which transmits the limited rotational force of the hinge shaft 2 to the operation plates 4 and 4 'is also provided.

The casing door hinge device is naturally connected to the operation plate and the damper by the long piston rod, so the casing is naturally long. The long casing means the longening of the door hinge device.

This long door hinge device has a high occupancy area on the floor of the entrance of the building, thus increasing the difficulty of installation. In addition, there is a problem in that the depth of embedding at the floor of the entrance of the building is low, and the stability after installing the door is also lowered over time.

In addition, the conventional structure is difficult to produce a large amount and difficult to form the cylinder integrally in the casing due to the casting production, difficult to manufacture and a lot of defective rate, in particular, there is a risk of cracking and oil leakage due to the weak cap installation portion of the cylinder There were many problems.

The present invention provides a door hinge device that is easy to manufacture and install by eliminating the problems of the conventional long door hinge device, and also has excellent stability over time after installation.

Another object of the present invention is to improve the workability of the casing and damper cylinder.

The first object of the present invention is to significantly reduce the length of the piston rod, and at the same time, the return spring, which loses its seat along the length reduction of the piston rod, is moved to the upper operation plate, so that the length of the door hinge device is shortened to the piston rod ( A door hinge device reduced by W of FIG. 6 can be achieved.

The second object of the present invention can be implemented by removing the cylinder fastening hole of the damper from the casing, and replacing the cylinder with a structure simply inserted into the casing.

1 is an exploded view of the floor hinge device for the present invention

Figure 2 is an exploded view of the damper of the present invention

3 is a longitudinal sectional front view of the assembled floor hinge apparatus of the present invention;

4 is a plan view of the present invention

Figure 5 is a plan view of the present invention the hinge is rotated in one direction

6 is a plan view of a conventional floor hinge device

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

1a: casing 4a: upper operation plate

5a: damper 6a: piston

7a: cylinder 20: return means for operating plate

21: tip spring seat 22: sealing

23: rear spring seat 24: spring rod

25: return spring 26: nut

Hereinafter, the floor hinge device of the present invention will be described in detail with reference to FIGS. 1 to 5.

In Figure 1, the floor hinge device proposed in the present invention is a modified casing (1a), hinge shaft (2), upper and lower operating plates (4a, 4b), modified cylindrical damper (5a), hinge shaft (2) It consists of a cam (10) installed on the), a roller (11) installed between the operating plates (4a, 4b), the deformed operating plate return means (20).

Here, the structure of the hinge shaft (2), the operating plate (4a, 4b), the cam (10), the roller (11) is not different from the case of the conventional linear arrangement floor hinge device, so to avoid duplication of description The description is omitted.

The casing 1a is similar in shape to the casing of a conventional one-way floor hinge but is much shorter in length and somewhat higher in height. Specifically, the length of the casing 1a is made shorter by the shorter portion of the piston rod (W in FIG. 6), and the return spring 25 is stacked on the upper operating plate 4a in a stacked manner so that the diameter As high as corresponding.

Another feature of this casing 1a is that the integral fastening hole used for the conventional damper 5 cylinder shown in FIG. 6 is excluded. As such, when the cylinder fastening hole is excluded, it is shaped like a normal box having only an upper surface, and the manufacturing process of the cylinder fastening hole is omitted, and thus the manufacturing is easy. Decreases. Reference numeral 12 denotes a shaft hole for a hinge drilled on the bottom of the casing 10 opposite to where the damper is located, and a bearing 13 is provided. The bearing 13 may be a bushing.

Referring to FIG. 2, the damper 5a has an oval shape in which the cylinder 7a fits into the casing 1a of the main body, and its outer circumferential surface is excluded from the external thread that is fastened to the threaded cylinder hole of the casing as in the prior art. The removal of the external thread from the cylinder 7a is an inevitable measure as the structure is changed to a simple insertion type as the cylinder fastening hole is excluded from the casing 1a. As such, when the fastening screw is excluded from the outer circumferential surface of the cylinder 7a, the same machining convenience as in the case of the fastening hole is provided, and the machining defect factor disappears.

1 again, the tip spring sheet 21 is integrally formed by the operation plate return means 20 at the front end of the upper operation plate 4a. The tip spring seat 21 supports the tips of the plurality of return springs 25 for the operation plate, which are moved to the upper operation plate 4a, and cuts the material of the upper operation plate 4a by the height thereof, Each of the spring rods 24 to penetrate the through-hole 22 to be penetrated upwardly bent at right angles along the boundary line with the front spring sheet 21.

A short connecting piece 15 is attached to the center of the tip of the upper operating plate 4a. The connecting piece 15 is a connecting element for connecting to the piston instead of the piston rod provided in the conventional cylindrical damper. This connecting piece 15 is much shorter in length than a conventional long piston rod. This is intimately related to the shortening of the length of the floor hinge device as described above.

The operation plate return means 20 is composed of the front spring seat 21, the rear spring seat 23, a pair of spring rods 24, a return spring 25, and a nut 26. The rear end spring seat 23 is located on the opposite side of the front end spring seat 21 to support the expandable elasticity of each return spring 25 to always act toward the damper 5a. In addition, the spring rod 24 is attached to the rear spring seat 23 side by side at the same distance as the above-mentioned both side holes 22 to support the return spring 25 so that the posture of the return spring 25 is not disturbed. Screw was given. In addition, the nut 26 is necessary to fasten to the distal end of the spring rod 24 passing through the rod 22 to maintain the coupling state between the upper operating plate 4a and the return means 20.

Reference numeral 16 is a spacer for integrally connecting and fixing them while determining the distance between the upper and lower operating plates 4a and 4b.

3 and 4 show the assembled state (closed) of the floor hinge device according to the present invention. The assembly instructions are as follows.

First, the cam 10 is inserted between the upper operating plate 4a and the lower operating plate 4b with the tip spring sheet 21 facing upward, and the hinge shaft through the long hole 3 of the upper operating plate 4a. (2) is inserted into the shaft hole of the cam 10 to be integrally fixed by means of welding or the like, and then the lower half of the hinge shaft 2 exposed under the cam 10 is exposed to the lower operating plate 4b. It penetrates the long hole 3 to organize the operating plate-hinge assembly.

On the other hand, the rear end spring seat 23 having the return spring 25 inserted into each spring bar 24 passes through the end of each spring bar 24 through the corresponding hole 22 of the front end spring sheet 21, and then closes it. The nut 26 is tightened at each end of the spring rod 23 protruding toward the front of the 22 to overcome the expandable elasticity of the return spring 25, and the engagement state of the upper operation plate 4a and the rear spring seat 23 is To be maintained.

Then, the piston 6a of the damper 5a and the connecting piece 15 of the upper operating plate 4a are pinned to be seated on one side of the casing 1a, and the operating plate-hinge assembly is opposite to the damper 5a. The lower end of the hinge shaft 2 is fitted into the bearing 13 of the casing 1a while being inserted into the casing 1a. Subsequently, oil is injected into the casing, and then the cover 30 is placed on the casing 1a. At this time, the upper end of the oil adjusting tip 18 and the hinge shaft 2 of the cylinder 7a penetrates the tip hole 31 and the shaft hole 32 previously drilled in the cover 30 upward.

Through these figures, it can be seen that the operating plate return spring 25 is stacked in the area of the upper operating plate 4a and the distance between the operating plates 4a and 4b and the damper 5a is very close. .

It arranges the return spring 8 between the cylindrical damper 5 and the operating plate 4, 4 ′, and also with the long piston rod 9 the cylindrical damper 5 and the operating plate 4, 4 ′. Unlike the conventional door hinge device that is connected in a straight line by means of connecting the short connecting piece 15 means that the distance between the damper (5a) and the operating plate (4a, 4b) at least shortened by the length of the shortened piston rod. Accordingly, the casing 1a that determines the length of the door hinge device in which the cylindrical damper is built can be shortened by the corresponding length.

Then, as the operation plates 4a and 4b and the dampers 5a are connected by the short connecting pieces 15, the same return spring 25 is mounted on the upper operation plate 4a and thus the return spring 25 is mounted. ) Function is still intact, and by attaching a plurality of return springs 25, the function of the operation plates 4a and 4b to help maintain the balance of the operation plate and to return from the opening position to the closing position is rather enhanced.

5 shows an opening state of the floor hinge apparatus according to the present invention. When the door is opened in the closed state, both the hinge shaft 2 and the cam 10 in the direction of opening the door push the roller 11 while rotating in the direction along the door, so that the whole operation plate is pressed backward while compressing the spring 25. At the same time, since the suction force is generated inside the cylinder by pulling the piston 6a connected to the operating plate, oil is sucked into the cylinder through the suction port S as shown by the arrow of FIG.

At this time, since the check valve is installed in the inlet port S, the oil can be sucked in, but the reverse flow is not easy. When the piston 6a is returned by the closing of the door, the oil pressure is gradually discharged to the discharge port T on the opposite side. This is to return slowly, the discharge amount is to adjust the oil adjusting tip (18).

In addition, when the door is opened and the first stop groove (90 ° angle) or the second stop groove (120 ° angle) of the cam 10 is caught by the roller 11, the open state is fixed. In this case, the door is not closed unless external force is applied. Do not.

Therefore, when the closed door is closed, the return elasticity of the compressed spring provides the return force to close the door, and the oil-filled cylinder acts to close the door slowly by suppressing the fast closing of the door.

As described above, the present invention connects the piston and the operating plate of the cylindrical damper with a connecting piece much shorter than the conventional piston rod, and the return spring loaded on the piston rod is mounted on the upper operating plate to mount the length of the floor hinge device to the piston rod. It is possible to provide a short door hinge device reduced by a shortening portion (w) of.

The short floor hinge device has a higher casing than the casing of the line-type door hinge device, so that the casing is installed deeper in the floor of the entrance and exit.

In addition, as the casing and damper cylinders are improved by being inserted into the casing by simply inserting the cylinder fastening holes of the damper in the casing and the external screws required for the fastening holes in the casing, respectively, simply inserting them into the casing. As the casing is mass-produced by die-casting operation rather than casting, it is possible to reduce the cost. The cylinder is made of steel, so it can be used for a long time without the risk of being damaged by strong oil pressure or leaking oil. In addition, relatively low defects can be reduced to provide a high quality and inexpensive floor hinge device.

Claims (2)

In the door hinge device, in which the return spring is compressed and opened when the door is opened, and the return force of the compressed return spring is closed while the hinge is reversed, the casing 1a is a non-damper fastened with a shortened length. The upper operating plate 3a has a tip spring seat 21 and a short connecting piece 15 in which the opening 22 is perforated, and the actuating plate returning means 20 includes the tip spring seat ( 21 and a plurality of spring rods 24, each having a return spring 25 loaded thereon, and a rear end spring seat 23 and a nut 26 fastened to the tip of the spring rod 24 through the rod 22. The floor hinge device for a door, characterized in that mounted on the upper operating plate (4a). The floor hinge device for a door according to claim 1, wherein the damper (5a) has an elliptical piston (6a) and a cylinder (7a).