JP2568810B2 - Floor hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor hinge for supporting a lower end of a building door.

[0002]

2. Description of the Related Art Conventionally, there has been known a floor hinge which is embedded in a floor surface to support a lower end portion of a door of a building and biases the door in a closing direction by a biasing force of a spring housed therein. I have.

FIGS. 4 and 5 show an example of a floor hinge, which will be described below with reference to the drawings. Reference numeral 1 denotes a main body of a floor hinge. A rotary shaft 3 fitted and coupled to the lower end of the rotary shaft 2; a substantially semicircular curved surface 4a attached to the rotary shaft 3 at one end side; and curved surfaces 4b and 4c near the heart shape from both ends of the curved surface 4a. And a pair of rollers 5, 5 interposed between upper and lower ends of the cam plate 4 and abutting against the curved surfaces 4a, 4b, 4c of the cam plate 4 at one end. Sliding plates 6 and 6 which are moved horizontally by the rotation of 4, and two rods parallel to each other, one end of which is connected by two pins 7 and 7 between the other ends of the sliding plates 6 and 6. 8, 8 and each of these rods 8
A piston 10 connected to the other end of the rod by a pin 9, a spring receiver 12 supported by a pin 11 near the other end of each of the rods 8, and a spring receiver 13 supported inside the body 1. 8, a spring 14 for applying a biasing force to the rotating shaft 3 to bias the door 2 in the closing direction via the sliding plate 6, the rollers 5, 5 and the cam plate 4, and the rotating shaft 3; In order to adjust the operating speed of the piston 10 when rotating in such a way that the rotating speed of the door 2 does not become too fast, filled oil or the like is stored so that the flow rate is adjusted by the flow rate adjusting valve. I have. The sliding plates 6,
Long holes 6a, 6a are formed in 6 so that they can be fitted to the rotating shaft 3 and slide horizontally with respect to the rotating shaft 3. Fifteen
Is a case having an upper end opening, in which the main body 1 is housed.

In the above configuration, when the door 2 is opened, the rotary shaft 3 rotates integrally with the door 2, and the cam plate 4 also rotates. Thereby, the sliding plates 6 and 6 having the pair of rollers 5 and 5 contacting the curved surfaces 4a, 4b and 4c of the cam plate 4 are pushed by the cam plate 4 and move in the direction of arrow A in FIG. Said rods 8, 8 and pistons being pulled by 6, 6
10, 10 also move in the same direction. At this time, the spring 14 is pressed by the spring receiver 12 and contracts. When the hand is released from the opened door 2, the piston 10, the rod 8, the slide plate 6, and the rollers 5, 5 try to return to their original positions by the urging force of the spring 14, and the cam plate 4 5,5
The door 2 is also pushed back and tries to return to the original position, and the door 2 is closed via the rotating shaft 3.

[0005]

However, in the above-structured floor hinge, when the door 2 is completely closed, the sliding plates 6 and 6 are normally located at positions shown by solid lines in FIG. However, since the sliding plates 6, 6 and the two rods 8 are connected by two pins 7, 7 and there is a slight play at the connection, the state shown by the two-dot chain line in FIG. Then, a phenomenon occurs in which the sliding plates 6 and 6 stop and the door 2 is closed. That is, there is a problem that the sliding plates 6 and 6 are slightly inclined and the door 2 is not completely closed.

An object of the present invention is to provide a floor hinge which can be operated in a completely closed state when a door is to be closed. .

[0007]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides a rotating shaft having an upper end protruding from the upper end of a main body inside a main body, and connecting means for reciprocating by the rotation of the rotating shaft. A piston provided through the connecting shaft, a spring for applying a biasing force to the rotating shaft via the connecting means to bias the door in the closing direction via the rotating shaft, and A floor hinge storing oil or the like filled so that a flow rate is adjusted by a flow rate adjusting valve in order to adjust an operation speed of a piston so that a rotation speed of a door does not become too fast, wherein the connection is performed. The means includes a horizontal cam plate attached to the rotating shaft, a sliding plate having a shaft body at one end side that comes into contact with a curved surface of the cam plate, and a sliding plate that moves horizontally by rotation of the cam plate. One end is connected to the other end The sliding plate is provided at one end with a rod connected to the other end of the sliding plate, and at the other end of the sliding plate, an opening is provided with a concave portion having a tapered portion extending outward, and the concave portion is provided when the door is completely closed. A pin that fits into the main body is provided inside the main body.

[0008]

With this construction, the tapered portion of the opening of the concave portion formed in the sliding plate hits the pin on the main body side immediately before the door closes and the sliding plate is guided, and finally the concave portion is completely fitted with the pin. Thus, the sliding plate is in a correct posture without inclination, and the door can be completely closed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings (FIGS. 1 to 3). In the figure, the same parts as those of the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the floor hinge according to one embodiment of the present invention, recesses 16 and 16 are formed in the center of the other end of the sliding plates 6 and 6 between the connecting portions with the two rods 8 and 8, and the door 2 is formed. Immediately before closing, the pins 17 provided in the vertical direction inside the main body 1 start to fit into the recesses 16, 16, so that the door 2 is completely closed. This is different from the conventional floor hinge. By the way, the recesses 16, 16
Tapered section 16 that spreads outward on both sides of the opening
a, 16 a are formed so that the recesses 16, 16 can be easily fitted to the pins 17. Other configurations are the same as those of the conventional example.

Therefore, when the door 2 closes, the door 2
Immediately before closing, the tapered portions 16a, 16a hit the pins 17 to guide the sliding plates 6, 6, and finally
The pins 6 and 16 are completely fitted with the pins 17 so that the sliding plates 6 and 6 are in a correct posture without inclination, and the door 2 is completely closed.

[0012]

As described above, according to the present invention, just before the door is closed, the tapered portion of the opening of the concave portion formed in the sliding plate contacts the pin on the main body side, and the sliding plate is finally guided. The recess is completely fitted with the pin, the sliding plate is in a correct posture without tilt, and the door can be completely closed.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a floor hinge when a door is closed according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the floor hinge when a door is opened.

FIG. 3 is a longitudinal sectional view of the floor hinge when the door is closed.

FIG. 4 is a horizontal sectional view when a door is closed by a floor hinge in a conventional example.

FIG. 5 is a longitudinal sectional view of the floor hinge when the door is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor hinge main body 2 Door 3 Rotating shaft 4 Cam plate 4a, 4b, 4c Curved surface 5 Roller 6 Sliding plate 7 Pin 8 Rod 9 Pin 10 Piston 14 Spring 16 Concave portion 16a Tapered portion 17 Pin

Claims (1)

(57) [Claims] A rotating shaft having an upper end protruding from the upper end of the main body inside the main body, a piston provided via connecting means so as to reciprocate by rotation of the rotating shaft, and a door provided via the rotating shaft. A spring for urging the rotating shaft through the connecting means to urge the door in the closing direction, and the operating speed of the piston when the door is turned in the closing direction does not become too fast. A floor hinge in which oil or the like filled so that the flow rate is adjusted by a flow rate adjustment valve for adjustment is stored, wherein the connecting means includes a horizontal cam plate attached to the rotating shaft. A sliding plate provided at one end with a shaft abutting on a curved surface of the cam plate, and a sliding plate that moves horizontally by rotation of the cam plate; one end is connected to the other end of the sliding plate, and the piston is connected to the other end. Made of rod The other end of the sliding plate has a concave portion formed with a tapered portion extending outward in the opening, and a pin that fits into the concave portion when the door is closed is provided inside the main body. A floor hinge, characterized in that: