JPH0222471Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floor hinge that rotatably supports the lower end of a door provided at an entrance in, for example, a theater such as a movie theater.

A floor hinge is installed by being embedded in a recess formed in the floor surface to pivot the lower end of the door. For example, when installing it on a soundproof door at the entrance of a theater such as a movie theater, it has conventionally been installed as shown in Figure 1. As shown, the main axis 2 of the floor hinge 1 is located at the middle part in the width direction of the floor hinge 1, so in order to bring the main axis 2 closer to the soundproof door 4 attached to the doorway 3, the shoelace part 10 on the lower side of the soundproof door 4 is shaved. It was necessary to take the floor hinge 1 and embed it in the floor surface 5. 6 is a connecting rod that connects the main shaft 2 of the floor hinge 1 and the lower end of the soundproof door 4, and 7 is a connecting rod 8 that is attached to the upper end of the doorway 3 so as to be located on the same vertical axis as the center of the main shaft 2. A shaft 9 rotatably provided at the tip is a connecting rod that connects the shaft 7 and the upper end of the soundproof door 4.
In such a conventional example, there was a problem that cutting out the shoelace part 10 for installing the floor hinge 1 was time-consuming.

The present invention was developed in order to deal with such conventional problems, and by providing the main axis of the floor hinge at one end in the width direction of the floor hinge, it is possible to avoid the above-mentioned shoe rub part on the underside of the door. Also, there is no need to remove this shoelace part, and the floor hinge can be easily installed. Furthermore, the present invention provides a locking means that can be unlocked to stop the rotation of the main axis of the floor hinge at a predetermined angle, so that, for example, the door can be stopped at an opening angle of 90 degrees by the locking means, or the locking means can be released. This allows the door to be opened and closed freely.

The following drawings (Fig. 2,
The explanation will be based on Fig. 3). In the figure 11
is a soundproof door installed at an entrance 12 of a theater, etc., and its lower end is connected to a rod 17 connected to the main shaft 16 of a floor hinge 15 embedded in a recess 14 formed in a floor surface 13.
Supported through. Reference numeral 18 denotes a shaft rotatably provided at the tip of a connecting rod 19 attached to the upper end of the entrance/exit 12 so as to be located on the same vertical axis as the center of the main shaft 16 . 20 is a connecting rod that connects this shaft 18 and the upper end of the soundproof door 11. Reference numeral 21 denotes a shoelace section on the lower side of the soundproof door 11.

The floor hinge 15 includes various members as shown in FIG. That is, the floor hinge 15
is rotatably provided at one end in the length direction and one end in the width direction of the main body 22, the upper end protrudes upward from the main body 22, and the outer circumferential surface of the main body 22 has teeth 23...
The main shaft 16 has a main shaft 16, and the vertical shaft 24 has a fan-shaped gear 24 that meshes with the teeth 23 of the main shaft 16.
The main lever 26 is pivoted to the main body 22 at 5.
, an auxiliary lever 29 connected to the main lever 26 via a link 27 and pivoted to the main body 22 with a shaft 28 , a rod support member 30 whose intermediate portion is pivoted to the auxiliary lever 29 ; Two parallel rods 31 and 32 whose one ends are connected to both ends of the rod support member 30, and a piston 33 which is connected to the other ends of the rods 31 and 32 and located at the other end in the length direction of the main body 22. , one end is in contact with this piston 33 and the other end is closer to the main body 22 than the rod support member 30.
Two springs 35 and 36 are provided to surround the rods 31 and 32, respectively, in contact with a spring receiver 34 provided near the other end in the length direction, and the main lever 26 rotates together with the soundproof door 11. A lock lever 39 has a recess 38 formed at its tip into which a roller 37 pivoted at an appropriate position on the outer circumference of the main lever 26 is fitted in order to rotate by the main shaft 16 and stop the soundproof door 11 at an opening angle of 90 degrees. A built-in operating shaft 40 is swingable between a position where it engages with the roller 37 and a position away from the position where it engages. More specifically, one end of the link 27 is connected to the main lever 26 through a shaft 41, and the other end is connected to the sub-lever 29 through a shaft 42. The auxiliary lever 29 is connected to the middle of the rod support member 30 by a shaft 43, and both ends of the rods 31, 32 are pivotally supported by the rod support member and piston 33, respectively, by shafts 44. Incidentally, due to the rotation of the main shaft 16 and the main lever 26, the link 27 and the sub-lever 29 are displaced as shown by the two-dot chain line in FIG. Because it is displaced from the state shown by the solid line to a slightly tilted state,
The rod support member 3 is designed to have some play in the connection between one rod 31 and the rod support member 30.
0 and one end of the rod 31 is fitted into a hole 45 formed in the rod support member 30 that is larger than a perfect circle. Further, the rod support member 30 is the third rod support member 30.
By being displaced as shown by the two-dot chain line in the figure, the piston 33 is moved to the third position via the two rods 31 and 32.
It is displaced against the springs 35 and 36 as shown by the two-dot chain line in the figure. Also, one end of the spring receiver 34 is connected to the main body 22.
is pivotally supported by a shaft 46, and the intermediate portion abuts against a stopper 47. Furthermore, the lock lever 39
is pivotally supported at the other end of the spring receiver 34 by a shaft 48, and a portion near the tip of the lock lever 39 and the horizontal projecting portion 40a of the operating shaft 40 are connected via two links 49, 50. ing. 51
52 is a pivot shaft between the links 49 and 50, and 53 is a pivot shaft between the link 50 and the horizontal projecting portion 40a of the operating shaft 40. As shown in FIG. 3, a stopper 54 is formed on the inner surface of one longitudinal end of the main body 22, with which the main lever 26 comes into contact when the soundproof door 11 is closed. Further, a long groove 55 is formed in the bottom of the main body 22, into which the lower end of the pivot shaft 52 is inserted and which guides the pivot shaft 52 when the lock lever 39 is displaced.

The lower end of the soundproof door 11 is supported by the floor hinge 15 having such a configuration, and when the soundproof door 11 is opened, the main shaft 1
6 rotates in the direction of the arrow in FIG. As a result, the main lever 26 also rotates, and when the soundproof door 11 is opened 90 degrees, the roller 37 of the main lever 26 is press-fitted into the recess 38 of the lock lever 39 located at the solid line position in FIG. In addition, soundproof door 1
Stop the rotation of 1. By the way, as mentioned above, when the roller 37 is press-fitted into the recess 38 of the lock lever 39, the roller 37 is moved into the lock lever 3 by the rotation of the roller 37, which rotates together with the main lever 26.
Trying to get over the tip of 9. At that time, the tip of the lock lever 39 is pushed by the roller 37 and
The roller 37 is tilted slightly to the right from the solid line state in the figure, and at the same time the roller 37 is moved through the lock lever 39 to the spring receiver 3.
4 from the connection part by the shaft 48 to the springs 35, 36.
The lock lever 39 moves toward the spring receiver 34 by pressing it against the force of . This causes the spring 35,3
Overcoming the force of 6, roller 37 locks lever 3
9 and fits into the recess 38.
Incidentally, when the lock lever 39 is slightly tilted to the right from the solid line state in FIG.
Rotates around 2. With the above operations, soundproof door 1
1 can be maintained in the open state. When closing the soundproof door 11 from this state, a force is applied in the direction of closing the soundproof door 11, so that the roller 37 engages in the recess 38 in an operation opposite to that of the main shaft 11.
6. The roller 37 moves into the recess 38 via the main lever 26.
If you move your hand away from the soundproof door 11, the main lever 26 will release the link 27,
Sub lever 29, rod support member 30, rod 3
1, 32, springs 35, 36 via piston 33
Since the force is applied, the main lever 26 automatically tries to rotate to its original state by the spring force, and as a result, the soundproof door 11 can be automatically closed via the main shaft 16.

By the way, if you want to freely rotate the soundproof door 11 at an opening angle of 90 degrees without stopping it, use the operating shaft 4.
0 in the direction of the arrow in FIG.
50, the lock lever 39 swings to the position shown by the two-dot chain line in FIG. 3, and even when the main lever 26 rotates, the roller 37 does not fit into the recess 38. Although not shown in the drawings, in FIG. 3, the upper end of the main body 22 is closed by a lid, the main shaft 16 projects upward from the lid, and the operating shaft 40 is prevented from rotating after operation by a locking member provided on the lid. is prevented.

Furthermore, in the above embodiments, the shapes of the main lever 26 and lock lever 39 and the mounting position of the roller 37 are determined so that the soundproof door 11 is stopped at an opening angle of 90 degrees, but it is not possible to stop the soundproof door 11 at an opening angle other than 90 degrees. This can also be easily achieved by changing the shapes of the main lever 26 and lock lever 39 and the mounting position of the roller 37. Further, although the floor hinge 15 supports the soundproof door 11, it goes without saying that it can support other doors.

The floor hinge of the present invention can be implemented as described above, and by providing the main axis of the floor hinge at one end in the width direction of the floor hinge, even if there is a shoelace on the underside of the door, this shoelace can be removed. There is no need to cut out the floor hinge (see Figure 2), and the floor hinge can be easily installed. Furthermore, the present invention provides a locking means that can be unlocked by operating the operating shaft in order to stop the rotation of the main shaft of the floor hinge at a predetermined angle. By releasing the locking means, the door can be opened and closed freely.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional side view of a soundproof door mounting part showing a conventional example, Fig. 2 is a longitudinal sectional view of a soundproof door mounting part showing an example of implementation of the present invention, and Fig. 3 is an enlarged plan view of the same floor hinge. be. 11... Soundproof door, 12... Doorway, 13... Floor surface, 14... Hollow, 15... Floor hinge, 1
6... main shaft, 21... shoelace section, 22... main body,
23... Teeth, 24... Sector gear, 25... Vertical shaft, 26... Main lever, 27... Link, 29...
...Auxiliary lever, 30...Rod support member, 31,3
2... Rod, 33... Piston, 34... Spring receiver, 35, 36... Spring, 37... Roller, 3
8... recess, 39... lock lever, 40... operating shaft, 49, 50... link.

Claims (1)

[Scope of utility model registration request] A floor hinge that rotatably supports the lower end of a door, with a vertical main shaft connected to the lower end of the door provided at one end in the width direction of the floor hinge body, and a gear that meshes with teeth formed on the outer peripheral surface of this main shaft. A lever is rotatably provided with a lever, a transmission means is provided on the lever for applying a spring force that acts to bias the main shaft in the direction of closing the door, and the lever is further provided with a transmission means for applying a spring force that acts to bias the main shaft in the direction of closing the door, and a transmission means that applies a spring force to the lever to bias the main shaft in the direction of closing the door. An operation in which a locking means whose tip can be freely fitted and removed is swingably provided on a protrusion provided at an appropriate position on the outer circumference of the lever, and the locking means is moved between a position where the tip engages with the protrusion and a position away from this position. A floor hinge with an axis.