JPH046476Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an auto hinge for doors.
This relates to a concealed type autohinge.

[Conventional technology]

Various types of door closers and automatic hinges, such as a concealed type, are commercially available as shock absorbers for doors that open and close along rotational movement trajectories.

[The problem that the idea attempts to solve]

By using such door closers and auto hinges, it is possible to prevent sudden restoring force from being generated in the door that is about to close, but doors equipped with conventional door closers and auto hinges Due to interference between the vertical frame of the door mounting part of the building and the door body or door closer, the opening/closing range of the door is often limited to, for example, a maximum of about 60 degrees for single-swing doors. Furthermore, many of the known door closers and autohinges have a separate structure from the hinge mechanism that rotatably supports the door, which poses a major obstacle in making the device as a whole more compact.

The main object of the present invention is to provide a compact semi-concealed door autohinge that can solve the above-mentioned problems found in conventional door closers and autohinges.

[Means to solve the problem]

In view of this purpose, the present invention is an automatic door hinge that is installed near the center of rotation of a door that opens and closes along a rotational locus, and that is installed at a predetermined eccentric distance from the door body 1 and perpendicular to the stile and floor. Fixedly installed in
It also consists of a pivot 3 for supporting the door body on which a pinion 4 is fixed, and an autohinge body A, and the autohinge body A is rotated into a pipe-shaped outer cylinder 8 and into the pipe-shaped outer cylinder 8. A pivot 6 having a sector gear 5 at its base end 6a which is arranged so as to be able to engage with the pinion 4 of the pivot 3.
and a torsion spring 7 which is wound around the pivot shaft 6, whose base end 7a is locked to the base end 6a of the pivot shaft 6, and whose free end 7b is locked to a collar 9 fixed to the outer cylinder 8; Inside the outer cylinder 8, there is a cylindrical sleeve 10g whose base is fixed to the tip of the pivot 6 and a female thread 11 is carved on the inner wall surface, and a male thread 12 that meshes with the female thread of the cylindrical sleeve 10g. on the outer wall surface, a serration 10i on the inner wall surface of the distal end portion, and a support member 10k for a check valve having a first check valve 10b and a second check valve 10c on the proximal end portion. a cylindrical slide piece 10a; a serration 10m that fits into the tip of the outer cylinder 8 and meshes with the serration 10i of the slide piece 10a on the outer wall surface; a guide member 10h that also serves as a seal member and has a valve stem with a tapered side surface that is inserted into the guide hole 10l of the stop valve 10b so that its protrusion length can be adjusted; A first oil chamber 10d is provided at the tip of the cylindrical slide piece 10a.
A second oil chamber 10e is provided inside the slide piece 10.
A third oil chamber 10f is formed between a and the tip of the pivot 6, and the first and second oil chambers 10d and 10e are communicated through a through hole 10j formed in the engagement surface of the serration,
Slide the second and third oil chambers 10e and 10f into the slide piece 1.
First and second check valves 10b and 10c provided at 0a
The main points of this report are the following.

[Effect]

Most of the autohinge components other than the pivot attached to the stile and floor are assembled inside the side edge 1d of the door body 1 in a semi-concealed manner.
In this way, it is possible to increase the opening/closing angle of the door by utilizing the eccentric arrangement of the pivot and the door body, and to prevent an increase in the size of the device and a deterioration in aesthetic appearance due to exposure of the autohinge components.

〔Example〕

FIG. 1 is a perspective view showing the overall structure of the device of the present invention in a state where it is attached to a door body, and FIG. 2 is a longitudinal sectional view of the device of the present invention. FIG. 3 is a partial cross-sectional view of the device of the present invention, illustrating the relative positions of the pivot and the axis.

As shown in FIG. 1, the door autohinge 2 according to the present invention has a predetermined eccentric distance (e, for example, 14 mm in this embodiment) from the rotation center O of the door body 1.
Pivots 3, 3 for supporting the door body 1 are fixed vertically to the stile and floor with their axes aligned with the upper end 1b and lower end 1c of the door body 1. and an autohinge main body A having a pivot 6 having a base end 6a fixed to a sector gear 5 that meshes with a pinion 4 fixed to the pivot. The autohinge main body A includes a coil fitted concentrically to the base end 6a of the pivot shaft 6, which is rotatably incorporated along the side edge 1d of the door main body 1 near the rotation center O. While fixing the base end 7a of the shaped torsion spring 7, the door body 1
The torsion spring 7 is attached to a collar 9 that is loosely fitted to the tip 6b of the pivot shaft 6, and has an integral structure with a pipe-shaped outer cylinder 8 that extends concentrically surrounding the pivot shaft 6 while being fixed to the collar 9. The free end 7b is locked. A buffer hydraulic mechanism 10 is connected to the tip of the pivot shaft 6 so as to be relatively rotatable. The buffer hydraulic mechanism 10 includes a cylindrical slide piece 10a at the tip 6b of the pivot 6 within the outer cylinder 8.
, two check valves 10b and 10c, a cylindrical sleeve 10g, and a guide member 1 that also serves as a sealing member.
0h, and a hydraulic flow is generated between the oil chambers 10d, 10e, and 10f by forward and reverse rotation of the pivot shaft 6 as the door 1 opens and closes. To explain in more detail, the inner wall surface of the cylindrical sleeve 10g, which is loosely fitted into the outer cylinder 8 while being fixed to the tip 6b of the pivot 6, has a female thread 1.
1 is cut, and correspondingly, a male screw 12 is cut on the outer wall surface of the slide piece 10a. Inside the outer cylinder 8, there is a guide member 10 that doubles as a seal member and is fixed to the inside of the tip of the outer cylinder 8.
A first check valve 10b having a tapered side wall surface is fixed with its base end supported by h.
When the door 1 is opened, the cylindrical sleeve 10g rotates, and the slide piece 10a that meshes with the cylindrical sleeve 10g generates a sliding movement along the axial direction of the pivot 6. That is, the engagement surfaces of the guide member 10h and the slide piece 10a are provided with serrations 10i,
10 m is formed, and the serration 10
A first oil chamber 10d is provided on the engagement surface between the guide member 10h and the slide piece 10a, on which the guide member 10m is formed.
A through hole 10j is provided which functions as a flow path for pressure oil from the oil chamber 10e to the second oil chamber 10e. This through hole 10j is opened when the door 1 is closed, that is, when the slide piece 10
When a moves toward the base end, it functions as a flow path for pressure oil flowing from the second oil chamber 10e toward the first oil chamber 10d. On the other hand, slide piece 1
A check valve support member 10k is fixed to the inner end of the check valve 0a, and the first check valve 10k is fixed to the axial center of the support member 10k.
A second check valve 10c, which functions as a flow path for pressure oil only when the door 1 is opened, is disposed on the side of the guide hole 10l.

The operating procedure of the device of the present invention will be explained below. First, when opening the door 1, the door 1 rotates about the pivot 3 as the center of rotation O due to the engagement between the pinion 4 and the sector gear 5, and the pivot 6 rotates, causing the base end of the torsion spring 7 to rotate. 7a also rotates together with the pivot 6, and stores elasticity for closing the door between it and the free end 7b that is locked to the collar 9. At this time, slide piece 1
0a, the male screw 12 is a cylindrical sleeve 10g
Since it is engaged with a female screw 11 cut on the inner wall surface of the pivot 6, it slides toward the tip along the axis of the pivot 6. At this time, since the slide piece 10a is engaged with the guide member 10h via the serrations 10i and 10m, it does not rotate in the direction perpendicular to the axis of the pivot 6. The movement of the slide piece 10a opens the first check valve 10b and the second check valve 10c, and the pressure oil in the first oil chamber 10d flows through the through hole 10.
j into the second oil chamber 10e, and the hydraulic pressure in the second oil chamber 10e is transferred to the gap between the first check valve 10b and its guide hole 10l and the second check valve maintained in an open state. It flows into the third oil chamber 10f through the check valve 10c. On the other hand, when the door 1 is closed by the stored elasticity of the torsion spring 7, the cylindrical sleeve 1
The direction of movement of the slide piece 10a with respect to 0 g is reversed, the second check valve 10c is maintained in a closed state by the close contact between the ball and the valve seat, and the third oil chamber 10f is closed.
The hydraulic pressure flow path from to the second oil chamber 10e is as follows:
Only the narrow gap remaining between the tapered side wall surface of the first check valve 10b and the guide hole 10l functions. As a result, the flow rate per unit time of the pressure oil flowing from the third oil chamber 10f to the second oil chamber 10e is the same as the flow rate of pressure oil from the second oil chamber 10e to the first oil chamber 10d. Regardless, it is significantly less than when opening door 1. In this way, the door 1 rotating in the closing direction is given a gentle closing action caused by the restoring force of the torsion spring 7 to its original shape and the reduction in the flow rate of the pressure oil per unit time.

[Effect of idea]

As can be understood from the above explanation, the present invention makes it possible to construct a compact autohinge in which most of the autohinge components other than the pivot are incorporated inside the door body in a semi-concealed manner. can. Furthermore, in the device of the present invention, a predetermined amount of eccentricity is maintained between the door body and its supporting member, the pivot, so that the distance between the vertical frame of the door mounting part of the building and the door body or auto hinge is maintained. There is no risk that the opening/closing range of the door will be restricted due to interference, and a wide opening/closing range with a rotation angle of 180°, for example, can be easily secured. In this way, it has become possible to significantly improve the usability and aesthetics of the door compared to conventional door closers or automatic hinges.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall structure of the device of the present invention in a state where it is attached to a door body, and FIG. 2 is a longitudinal sectional view of the device of the present invention. FIG. 3 is a partial cross-sectional view of the device of the present invention, illustrating the relative positions of the pivot and the axis. 1...Door body, O...Rotation center of door, 1a
...Surface of the door, e...Eccentricity distance, 1b...Top end of the door, 1c...Lower end of the door, 2...Auto hinge, 3...Pivot, 4...Pinion, 5...
...Sector gear, A...Auto hinge body, 1d
...Side edge of door, 6... Pivot, 6a... Base end of pivot, 7... Torsion spring, 7a... Base end of torsion spring, 8... Outer cylinder, 9... Collar, 6b... ... Tip of the shaft, 7b... Free end of the torsion spring, 10...
Buffer hydraulic mechanism.

Claims (1)

[Scope of utility model registration request] An auto hinge for doors that is installed near the center of rotation of a door that opens and closes along a rotational trajectory, and is fixed perpendicularly to the stile and floor at a predetermined eccentric distance from the door body, and has a fixed pinion. a pivot for supporting the door body; and an autohinge body; the autohinge body is rotatably disposed within the pipe-shaped outer cylinder; A pivot having a meshing sector gear at its base end, a torsion spring wrapped around the pivot, whose base end is locked to the base end of the pivot, and whose free end is locked to a collar fixed to an outer cylinder. ,
The base is fixed to the tip of the pivot within the outer cylinder,
and a cylindrical sleeve with a female thread carved on the inner wall surface, a male thread on the outer wall surface that engages with the female thread of the cylindrical sleeve, a serration on the inner wall surface of the distal end, and a serration on the inner wall surface of the distal end, and a serration on the inner wall surface of the distal end; A cylindrical slide piece formed by a fixed support member for a check valve having a first check valve and a second check valve, and a cylindrical slide piece that is fitted into the tip of the outer cylinder,
The valve stem has a serration on the outer wall surface that engages with the serration of the slide piece, and has a tapered side surface that penetrates the guide hole of the first check valve at the rear end so that the protrusion length can be adjusted. A guide member that also serves as a seal member having a first oil chamber inside the outer cylinder and at the tip of the slide piece, a second oil chamber inside the cylindrical slide piece, and a second oil chamber inside the cylindrical slide piece. A third oil chamber is formed between the front end of the shaft and the tip of the shaft, the first and second oil chambers are communicated with each other through a through hole formed in the engagement surface of the serration, and the second and third oil chambers are connected to each other through a through hole formed in the engagement surface of the serration. An auto hinge for a door, characterized in that these are communicated by first and second check valves provided on a slide piece.