JPH02167975A - Floor hinge - Google Patents

Abstract

PURPOSE:To make it possible to fully open a door automatically by opening it only by half and shut it afterward, by providing a spindle supporting the door at the bottom thereof, an energizing means to store an energizing force, a one-way clutch and a transmission means of the energizing force. CONSTITUTION:A spindle 4 projecting upward from a casing 3 to support a door bottom, a one way clutch 7 connected to the spindle 4 via a plate 5 and a link 6 and a rack 9 engaging with a gear 8 of the clutch 7 are provided. An energizing means 14 having a piston 13 and a spring 16 is connected to the spindle 4 via a plate 10 and a link 12 and also a parallel link mechanism 15 is provided to connect one end of the link 12 to the front edge of the rack 9. When opening the door, by pushing it to open with hands by half against the fully opening angle (about 90 degree), fully opening action thereafter and completely closing action are performed automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor hinge which is embedded in a floor surface and rotatably supports the lower end of a door.

2. Description of the Related Art Conventional floor hinges of this kind are generally configured to push the door open at the maximum opening angle link, and then, when the door is released, the door is automatically closed by the force of a spring built into the floor hinge. ing.

Problems to be Solved by the Invention] As mentioned in 1., the conventional floor hinge only closes an opened door using the force of a spring. Therefore, when opening the door in the opposite direction to the maximum opening angle, the door must be pushed open as far as it will go by hand, which may be difficult for children or elderly people to do depending on the weight of the door.

The present invention is intended to solve this problem, and aims to enable the door to be automatically fully opened by pushing the door halfway open, and then automatically closed.

Means for Solving the Problem In order to solve this problem, the present invention provides a floor hinge which is buried in the floor of a building, and which includes a main shaft that faces in the vertical direction inside the casing and supports the lower end of the door. , a biasing means that engages with the main shaft until the door is in the middle of opening and stores a biasing force as the door opens, a one-way clutch connected to the main shaft, and a biasing means that stores the biasing force until the door is in the middle of opening. and a transmission means for transmitting force to the one-way clutch, and is configured to transmit one rotation of the one-way clutch by the transmission means to the main shaft to perform the operation of the door from mid-opening to fully opening and from fully opening to fully closing. It is something.

Effect: With this configuration, it is possible to provide a floor hinge that, when opening a door, can automatically open the door until it is fully opened by pushing the door halfway open, and can then automatically close the door. .

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

In Figures 1 to 4, 1 is a door whose lower end is supported by the main shaft of a floor hinge embedded in the floor surface and whose upper end is supported by a bearing (not shown) to open and close the entrance/exit part 2 of the building. , it is designed to open the road up to 90 degrees.

The floor hinge has a main shaft 4 which faces inside the casing 3 in the vertical direction and projects upwardly from the casing 3, and a first plate part 5 which has one end pivoted to a first plate part 5 which projects from the main shaft 4 at right angles. A link 6, a one-way clutch 7 that is pivotally connected to the other end of the first link 6 and is rotatable around a vertical axis, and a rack 9 that engages with a gear portion 8 of the one-way clutch 7 and is slidable. , a second link 12 whose one end engages with a pin 11 provided on a second plate portion 10 protruding from the main shaft 4 at right angles, and a piston 13, the piston shaft 13;
a is a biasing means 1 pivotally connected to the other end of the second link 12;
4, a parallel link mechanism 15 connecting the other end of the second link 12 and the tip of the rack 9, and the like.

More specifically, the biasing means 14 is provided with a spring 16 so as to bias the piston 13 in the direction of closing the door 1 via the second link 12.

Furthermore, when the one-way clutch 7 starts to open the door 1 and moves to a certain angle (for example, 45 degrees), the upper plate body 17 connected to the first link 6 is pulled by the first link 6. 1, and the gear portion 8 on the lower side thereof does not rotate in the same direction. fl of the second link 12! The 1fRA section and the tip of the rack 9 are connected by a parallel link mechanism 15, and when the door L is opened, the parallel link I! l
The rack 9 is pulled by the mechanism 15 being displaced as shown by the dashed line in FIG. It rotates in the direction of arrow B in the figure. This rotation of the gear portion 8 is not transmitted to the door 1. As mentioned above, when the door 1 is opened, the spring 16 is compressed by being pushed by the piston 13 via the second link 12, and when you release your hand with the door 1 separated by approximately 45 mm, the biasing force of the spring 16 is reduced. As a result, the piston 13 and the second link 12 try to return to their original positions. At this time, the second link 12 is connected to the pin 11.
In conjunction with the movement of the second link 12, which is not engaged with the second link 12, the parallel link mechanism 15 and the rack 9 connected thereto also operate to return to their original positions, and the gear portion 8 meshing with the rack 9 moves back to its original position. Rotate in the direction of the arrow hole in the figure. This rotation of the gear portion 8 in the direction of the arrow hole in FIG. Since the gear portion 8 rotates in the direction of the arrow in FIG. 1 as described above, the door 1 can be automatically opened up to approximately 90 degrees after the user releases his or her hand from the door 1.

When the door 1 is fully open at approximately 90 degrees, the spring 16, piston 13, second link 12, parallel link mechanism 15, and rack 9 have returned only halfway, and the first plate portion 5 has returned to its original position. The second plate part 10 is in the position shown in Figure 1A, and the connecting pin 18 between the first link 6 and the upper plate 17 is in the position shown in Figure 1C. When the piston 13, the second link 12, the parallel link mechanism 15, and the rack 9 try to completely return to their original positions by the spring 16, the gear part 8 rotates once from its original state, and as a result, the first link 6 is pulled by the upper plate 17 and positioned in the state shown by the solid line in FIG. This causes the door 1 to move closed. Further, the first plate part 5 and the second plate part 10 are also located in the state shown by solid lines in FIG. This second
Just before the plate part 10 of the second plate part 10 returns completely, the bottle 1 of the second plate part 10
1 comes into contact with the curved surface near one end of the second link 12, and in this state, the second link 12 is pushed by the bottle 11 and rotates around the shaft 19 on the other end side to form the second plate part. Since the second link 12 is biased by the spring 20 in the direction of contacting the stopper 21, the pin 11 of the second plate portion 10 is configured to allow rotation of the second link 12. can be engaged at one end.

In this state, the door 1 is in a closed state. In short, according to the floor hinge of this embodiment, when opening the door, by pushing it open with the angle link that is half the full opening angle (for example, 90 degrees), the subsequent opening movement until full opening and the subsequent closing movement from full opening to full opening are controlled. It can be done automatically.

Note that during these operations, the door 1 is configured to apply an appropriate braking force when opening and closing the door 1. As a structure for this purpose, a link 23 whose one end is pivotally connected to the pin 22 of the gear section 8 is fl! It4A and the second
The piston shaft 13a to which the other end of the link 12 is pivotally connected
cylinder devices 24 and 25 for the brakes, respectively.
Although the specific structure of the cylinder device 24 is not shown in the drawing in which the pistons 24a and 25a are connected, a flow 41 regulating valve or the like may be provided as appropriate, so that, for example, when the door 1 is opened, it can be adjusted from approximately 75 degrees to 90 degrees. Apply the brakes between
It is possible to apply a brake so that the closing movement can be performed while gradually slowing down the speed during the closing movement. moreover,
In the drawing, a roller 28 is provided which receives the force of the spring 16 via a link 26 and comes into contact with the outer periphery of a disc 27 which is provided integrally with the main shaft 4, and when the door l is completely closed, the disc 27 In other words, even if the door 1 attempts to close with a gap left in the fully closed state, the roller 28 is forced toward the disc 27. Since the roller 28 is pushed into the recess 29, the disc 27 can be rotated to the end, and the main shaft 4 can be rotated to completely close the door 1.

Effects of the Invention As described above, according to the present invention, when opening a door, the floor can be automatically opened until it is fully opened by pushing the door halfway open, and then can be automatically closed. - A hinge can be provided.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a cross-sectional view showing the internal mechanism of the floor hinge, and FIGS.
The figure is a longitudinal sectional view taken at a different position from FIG. 1, and FIG. 4 is a schematic plan view of the door mounting portion. DESCRIPTION OF SYMBOLS 1... Door 2... Entrance/exit part, 3... Gauging, 4... Main shaft, 6... First link, 7... One-way clutch, 8... Gear part, 9... ·rack,
12... Second link, 13... Piston, 13a
...Piston shaft, 14...Biasing means, 15...Parallel link R side, 16...Spring, 17...Upper plate.

Claims (1)

[Claims] 1. A floor hinge that is buried in the floor of a building,
A main shaft inside the casing that faces in the vertical direction and supports the lower end of the door, a biasing means that engages with the main shaft until the door is in the middle of opening and stores a biasing force as the door opens, and a one-way connected to the main shaft. It comprises a clutch and a transmission means for transmitting the biasing force of the biasing means stored during the opening of the door to the one-way clutch, and the transmission means controls the operation of the door from the middle of opening to fully opening and from fully opening to fully closing. A floor hinge configured to transmit one rotation of the one-way clutch to the main shaft.