JP2695138B2 - 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 that supports a lower end of a door of a building.

[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.

4 to 6 show examples of floor hinges,
Referring to the drawings, reference numeral 1 is a main body of a floor hinge. Inside the main body 1, a rotary shaft 3 having an upper end protruding from an upper end of the main body 1 and fitted and coupled to a lower end of a door 2 is attached.
And a horizontal cam plate 4 attached to the rotating shaft 3 and having a substantially semicircular curved surface 4a formed on one end side and curved surfaces 4b and 4c close to a heart shape formed from both ends of the curved surface 4a.
And a pair of rollers 5a, 5b located above and below the cam plate 4 and abutting against the curved surfaces 4a, 4b, 4c of the cam plate 4 at one end side thereof, which slides horizontally when the cam plate 4 rotates. Moving plates 6 and 6, two parallel rods 8 having one ends connected to each other by two pins 7 and 7 between the other ends of the sliding plates 6 and 6, and each rod 8 A piston 10 connected to the other end of the rod by a pin 9, a spring bearing 12 supported by a pin 11 near the other end of each rod 8 and a spring bearing 13 supported inside the main body 1, and the rod. 8, sliding plate 6, rollers 5a, 5
b, a cam plate 4, and a rotating shaft 3, a spring 14 for applying an urging force to the rotating shaft 3 so as to urge the door 2 in the closing direction,
In order to adjust the operating speed of the piston 10 so that the rotation speed of the door 2 does not become too fast when the door 2 rotates in the closing direction, the oil flow rate is adjusted by a flow rate adjusting valve. Etc. are stored. The sliding plates 6 and 6 are formed with long holes 6a so that they can be fitted to the rotating shaft 3 and slide horizontally with respect to the rotating shaft 3. Further, recesses 15 and 15 are formed in the centers of the other ends of the sliding plates 6 and 6 between the connecting portions with the two rods 8 and 8.
Immediately before the door 2 is completely closed, a pin 16 provided in the vertical direction inside the main body 1 starts to fit into the recesses 15 and 15 so that the door 2 is completely closed. By the way, taper portions 15a, 15a are formed on both sides of the openings of the recesses 15, 15 so as to expand outward, so that the recesses 15, 15 can be easily fitted into the pins 16. Reference numeral 17 denotes a case having an upper end opening, in which the main body 1 is housed. 5c is provided between the sliding plates 6 and 6 so as to be close to the other end of the cam plate 4 when the door 2 is closed, and when the cam plate 4 rotates, the curved surface 4b of the cam plate 4b,
It is a roller for abutting against 4c and stabilizing the operation of the cam plate 4.

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. As a result, the sliding plates 6 and 6 having the pair of rollers 5a and 5b 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. 6 and 6, the rods 8 and 8 and the pistons 10 and 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 sliding plate 6, the rollers 5a, 5b are urged by the urging force of the spring 14.
To return to the original position, and the cam plate 4 is pushed by the rollers 5a and 5b to try to return to the original position, and the door 2 is closed via the rotary shaft 3. By the way, when the door 2 is closed, the taper portions 15a, 15a hit the pins 16 to guide the sliding plates 6, 6 just before the door 2 is completely closed, and finally the recesses 15, 15 are completely fitted with the pins 16. Accordingly, the sliding plates 6 and 6 are in the correct posture without inclination, and the door 2 is completely closed.

[0005]

In the floor hinge having the above structure, when the hand is released from the opened door 2, the biasing force of the spring 14 causes the door 2 to close. For example, it is not a configuration that can be stopped in the state of being opened 90 degrees.

Therefore, as another type of floor hinge, as shown in FIG. 7, the roller 5a or 5b is opened when the door 2 is opened 90 degrees so that the door 2 can be stopped in a state where the door 2 is opened 90 degrees, for example. It is also known that recesses 4b 'and 4c' to be fitted are provided on the curved surfaces 4b and 4c on both sides of the cam plate 4.

Therefore, conventionally, two types of doors, one that can stop the door at a predetermined angle and the other that cannot stop, have been prepared and are used properly. The present invention solves such a problem, and it is not necessary to prepare two types of doors that can be stopped at a predetermined angle and those that cannot be stopped. The purpose is to switch between so-called stop and free so that it can be used.

[0008]

In order to solve this problem, the present invention provides a rotating shaft having an upper end projecting from the upper end of the main body inside a main body, and a connecting means for reciprocating movement by the rotation of the rotating shaft. A piston provided through the spring, a spring that applies an urging force to the rotating shaft through the connecting means to urge the door in the closing direction through the rotating shaft, and the spring when the door rotates in the closing direction. A floor hinge in which oil or the like is stored so that the flow rate is adjusted by a flow rate adjusting valve in order to adjust the operating speed of the piston so that the rotation speed of the door does not become too fast. The means includes a horizontal cam plate attached to the rotating shaft, and a slide plate that has a pair of rollers abutting on curved surfaces on both sides of the cam plate at one end side and that moves horizontally by rotation of the cam plate,
One end of the sliding plate is connected to the other end of the sliding plate and the other end of the piston is connected to the rod.The curved surface of the cam plate has a roller located on the door opening side when the door opens a predetermined angle. A recess to be fitted is formed in approximately the upper half or the lower half of the thickness of the cam plate, and the roller is provided between the height position of the recess of the cam plate and the position deviated from the height position of the recess of the cam plate. It is configured to move up and down.

With this configuration, when it is desired to stop the door with the door opened by a predetermined angle, one of the rollers located on the door opening side is positioned at the height of the concave portion of the cam plate so that the door is predetermined. The roller can be inserted into the recess to stop it when it is opened at an angle, and when opening and closing the door in a free state, one roller located on the door opening side should be removed from the height of the recess of the cam plate. The door can be opened and closed in a free state by keeping it in the open position.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An 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.

A floor hinge according to an embodiment of the present invention is
The structure is basically the same as that of the conventional example shown in FIGS. 4 to 6, and like the structure shown in FIG.
The concave portions 4b 'and 4c' into which the roller 5a or 5b is fitted when opened at 0 degrees are formed on the curved surfaces 4b and 4c on both sides of the cam plate 4, respectively.
The door can be stopped with the door opened 90 degrees, for example. In the floor hinge according to the embodiment of the present invention, the recesses 4b ', 4
7 is the same as that shown in FIG. 7 in that the curved surfaces 4b, 4c on both sides of the cam plate 4 are provided with c ', but the difference from that shown in FIG. Of the recesses 4b 'and 4c' in the lower half of the thickness of the cam plate 4 below the recesses 4b 'and 4c'.
Not formed, and rollers 5a and 5b
Is the thickness that can be fitted into the recesses 4b 'and 4c', and it can be moved up and down between the positions where it is fitted into the recesses 4b 'and 4c' and the positions where it is not fitted. Specifically, the rollers 5a and 5b have a lower shaft portion 18 protruding vertically which is a male screw and is screwed into a female screw hole 6b formed in the lower slide plate 6, and the upper shaft portion 19 has a circular cross section. No male screw is formed on the surface, and it is fitted into a hole 6c formed in the upper slide plate 6, and a convex portion 19a is formed at the upper end. And the main body 1
The operating shaft 21 provided on the upper lid 1a by being biased upward by the spring 20 is pushed downward against the force of the spring 20 so that the lower end concave portion 21a of the operating shaft 21 becomes the upper end convex portion 19a of the shaft 19. It will be in the engaged state, and in that state the driver axis etc.
Roller 5a together with shaft 19 by rotating 21
Alternatively, 5b and the shaft portion 18 rotate so that the roller 5a or 5b moves up and down between a position where it is fitted into the recess 4b 'or 4c' and a position where it is not fitted. by the way,
As described above, the two rollers 5a contacting the cam plate 4,
The reason why 5b is provided is to correspond to a door that opens right or left. That is, in the case of opening to the right, the roller 5a
Acts on the cam plate 4, and in the case of left opening, the roller 5b acts on the cam plate 4.

In the above structure, when it is desired to stop the door with the door opened 90 degrees, the roller 5a,
It suffices to raise 5b to such a height that it fits into the recesses 4b 'and 4c'. Further, when opening and closing in a free state, the rollers 5a and 5b may be lowered to a height that does not fit into the recesses 4b 'and 4c'. As described above, the operation of vertically rotating the rollers 5a and 5b between the positions where the rollers 5a and 5b are fitted into the recesses 4b 'and 4c' and the positions where they are not fitted is such that the operating shaft 21 is pressed downward as described above, and the lower end of the operating shaft 21 is recessed. twenty one
The operation shaft 21 may be rotated by a driver or the like in a state where a is engaged with the upper end convex portion 19a of the shaft 19, whereby the positions of the rollers 5a and 5b can be changed.

[0013]

As described above, according to the present invention, when it is desired to stop the door with the door opened by a predetermined angle, one roller located on the door opening side is positioned at the height of the recess of the cam plate. By doing so, the roller can be inserted into the recess and stopped when the door is opened at a predetermined angle, and when opening and closing the door in a free state, one roller located on the door opening side is a cam plate. The door can be opened and closed in a free state by arranging it at a position deviating from the height position of the concave portion. Therefore, it is not necessary to prepare two types of doors that can be stopped at a predetermined angle and those that cannot be stopped, and one type of floor hinge can be used by switching to stopable and nonstopable, so-called stop and free.

[Brief description of the drawings]

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

FIG. 2 is a vertical cross-sectional view of the floor hinge when the door is closed.

FIG. 3 is an enlarged vertical sectional view of a main part of the floor hinge.

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

FIG. 5 is a horizontal sectional view of the floor hinge when the door is opened.

FIG. 6 is a vertical cross-sectional view of the floor hinge when the door is closed.

FIG. 7 is a horizontal sectional view of another conventional floor hinge when the door is closed.

[Explanation of symbols]

 1 Floor hinge main body 3 Rotating shaft 4 Cam plate 4a, 4b, 4c Curved surface 4b ', 4c' Recess 5a, 5b Roller 6 Sliding plate 6a Long hole 6b Female screw hole 6c hole 7 pin 8 Rod 9 pin 10 Piston 14 Spring 15 Recessed portion 15a Tapered portion 16 Pin 18 Shaft portion 19 Shaft portion 19a Convex portion 20 Spring 21 Operation shaft 21a Lower end recessed portion

Claims (1)

(57) [Claims] 1. A rotary shaft having an upper end projecting from the upper end of the main body inside the main body, a piston provided through a connecting means so as to reciprocate by the rotation of the rotary shaft, and a door through the rotary shaft. A spring for applying an urging force to the rotating shaft via the connecting means to urge the door in the closing direction, and the operating speed of the piston when the door rotates in the closing direction, so that the rotation speed of the door does not become too fast. Is a floor hinge in which oil or the like is filled so that the flow rate is adjusted by a flow rate adjusting valve so that the connecting means includes a horizontal cam plate attached to the rotary shaft. A pair of rollers that are in contact with the curved surfaces on both sides of the cam plate at one end side and that slides horizontally by the rotation of the cam plate,
One end of the sliding plate is connected to the other end of the sliding plate and the other end of the piston is connected to the rod.The curved surface of the cam plate has a roller located on the door opening side when the door opens a predetermined angle. A recess to be fitted is formed in approximately the upper half or the lower half of the thickness of the cam plate, and the roller is provided between the height position of the recess of the cam plate and the position deviated from the height position of the recess of the cam plate. A floor hinge characterized by being configured to move up and down.