JP3291411B2 - Automatic door closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door closing device which is buried on a door side or a door stop side and has a clean appearance.

[0002]

2. Description of the Related Art A door checker is a door checker which automatically closes a door or the like at an entrance or the like after the door is opened. The piston, valve, and spring are built into the cylinder filled with hydraulic oil, and the flow of hydraulic oil flowing in both chambers of the cylinder separated by the piston is adjusted, and the spring is built into the door. There is an external type that adjusts the closing time so that it closes slowly and securely, or a Kamoi or a type that is embedded in the floor.

[0003]

Regardless of the type of the conventional hydraulic external door checker or the type of door checker embedded in the floor or the like, this door is provided separately from the hinge for opening and closing the door. It is necessary to install a checker, and this door checker is structurally large, and when it is externally mounted, it always projects outside the door, impairing its appearance.In the case of a recessed type, it has a mounting hole on the floor surface Since it is pierced and attached, a great deal of time and labor is required for the attaching operation.

In the present invention, the exterior of the door is buried in either the upper frame of the door or the door stop attached to the lower surface of the door, so that the appearance around the door is simplified, the installation is simplified, and the door is automatically closed after being released. The purpose is to do.

[0005]

Means for Solving the Problems The present invention has been made to achieve the above object, and a first invention is to provide a body having a shape capable of storing a moving body with wheels, a fixed wheel and a spring; A fixed-side wheel that is disposed inside the main body and is rotatable; and a moving body that is disposed opposite to the fixed-side wheel and has a movable-side wheel rotatably provided;
A spring disposed between the movable body and the main body so as to apply a tensile force to the movable body in a direction in which the door closes;
A rope stretched across the two opposed wheels and fixed at one end to a fixed side; and a rotatable end fastener to which the other end of the rope led out of the main body is fixed. And a holder supported on the bottom ;
Instead of the door stop, attach the body to the Kamoi side and tighten the cable ends
A retainer that rotatably supports the tie is attached to the upper frame of the door
The main point is that

According to a second aspect of the present invention, when a door is closed, a braking means is provided in the main body so as to act on a moving body movably fitted in the main body and a moving wheel supported by the moving body. The gist of the present invention is that the return speed in the door closing direction is controlled by the tensile force of the spring so that the door is closed quietly.

Further, the third invention is directed to swinging in the door closing direction.
A spring acting on the link support shaft to resist
On the door side so that the tip slides against the door stop.
The gist of the invention is to provide a braking means for supporting the link so as to swing freely .

According to a fourth aspect of the present invention, the main body is provided on an upper frame of a door,
The gist of the present invention is that holding members that rotatably support the cable end fasteners are respectively attached to the gate.

A fifth aspect of the present invention relates to a main body having a shape capable of housing a moving body with wheels, a roller for a link guide and a spring; a roller for a link guide slidably fitted in the main body; A moving body provided opposite to the link guide roller and having a movable side wheel rotatably provided; and a moving body disposed between the moving body and the main body and pulled in a direction in which a door is closed by the moving body. A spring locked to apply a force; a cable hung on a moving wheel of the moving body, one end of which is fixed to the fixed side, and the other end of which is fixedly attached to the link guide roller mounting shaft. And a link which is swingably connected to the door side via a link support shaft and has a tip fixed to a roller mounting shaft; and the main body is to be mounted on the gate side.

In a sixth aspect of the present invention, a door is pivotally connected to a door via a link support shaft, and a tip of the link is supported by a link support shaft of which a roller is mounted on a roller mounting shaft. The gist of the present invention is to provide a braking means provided with a spring acting to resist it.

[0011]

The automatic door closing device A has a flat cross-sectional shape having at least one side open, for example, a size and length used as a substitute for a door stop for applying an upper frame to a door D using a U-shaped member, or a door D. A main body 1 sized to be buried or attached to the top of the upper frame, which is mounted instead of a door stop or buried at the top of the upper frame of the door, and the tension of the spring 6 is always kept in the main body. A moving-side wheel 5 of a moving body disposed to move within the main body;
A cable 7 such as a wire is laid between the fixed wheel 4 supported at a fixed position of the main body, and one end of the cable 7 is attached to the door D or the door side, and the other end is attached to the fixed wheel 4. The door is locked so that the tension of the spring always acts on the door in the door closing direction. As a result, the structure is simplified, the installation is simplified, and since there is no large protrusion around the door, the appearance around the door is neat. When the door D is opened, the spring is stretched by being pulled through the cable. When the external force on the door in the direction of opening the door is removed, the door is securely and automatically closed by the tension of the spring.

[0012] Further, by providing a braking means on a moving body in the main body, or by providing a braking means on a link attached to the door side so as to swing according to opening and closing of the door,
When the door is closed by releasing the external force of the door, the return speed at the time of the return in the door closing direction by the spring is controlled, so that the door can be slowly and securely closed with a simple device.

Further, a roller for link guide, and a movable body provided with the movable side wheel rotatably provided in the main body so as to face the roller for link guide and to be rotatable, are movably inserted. A spring is locked between the moving body and the main body so as to apply a pulling force to the moving body in a direction in which the door closes, is further hung on a moving wheel of the moving body, and one end is fixed, and the other end is Side is fixed to the roller mounting shaft for the link guide, a cable is stretched, and a link is swingably pivoted to the door side via a link support shaft, and the tip of the link is connected to the roller mounting shaft. Because it is fixed, only one link is exposed to the exterior, the appearance is clean, and even when the door is strongly closed, it is firmly supported by this link.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an automatic door closing apparatus according to the present invention.

FIG. 1 shows a first embodiment of the present invention in which a main body is attached to a doorway side instead of a door stop, and a holder at the end of a cable is attached to a door side. As shown in this figure, a door D is attached to a vertical frame P of a pillar or an opening frame via a hinge H so as to be openable and closable, and a door D is attached to a gate S (or an upper frame) of the opening.
The automatic door closing device A of the present invention is attached instead of the door stop to which the upper frame is applied.

As shown in FIGS. 2 to 4, the first embodiment of the automatic door closing device A uses a member having a flat U-shaped cross section, and is used in place of a door stop for applying an upper frame to a door D. ,
Alternatively, the main body 1 sized to be attached to the top of the upper frame of the door D is supported at a fixed position of the main body by a moving-side wheel 5 disposed so as to always move under the tension of the spring 6 and move inside the main body. A rope 7 such as a wire is hung between the fixed side wheel 4 and one end of the rope 7 is attached to the door D, and the other end is attached to the main body 1.
Alternatively, when the door D is opened, the wheel 5 is moved through the cable to pull the spring when the door D is opened, and the door is automatically used by using the pulling force of the spring when the door is closed. It is made to close automatically. The fixed side wheel 4 and the movable side wheel 5 are each provided with a cable fitting groove for hanging the cable so as not to come off.

In order to support the fixed wheel 4 in the main body 1, a wheel mount 2 is provided at a predetermined position from one end of the main body 1 as shown in FIG. The wheel mounting base 2 is fitted into the main body 1 and fixed at a predetermined position with a screw. The wheel mounting groove is formed on the outer periphery of the wheel mounting base 2 by a wheel shaft 21 fitted and supported in a shaft hole 23 formed in the wheel mounting base 2. The rotatable support of the fixed-side wheel 4 formed with a rope fixing piece 22 is provided at one end of the wheel mounting base 2.
When the fixed wheel 4 is supported on the wheel mounting base 2 via the wheel shaft 21, the wheel top surface is positioned within the main body, that is, the mounting base 2 and the fixed wheel 4 are completely inserted into the groove of the main body 1. To fit in.

The moving wheel 5 provided on the main body 1 has the moving body 3 slidably fitted into the main body as shown in FIGS. 2 and 5, and the wheel fitting groove 3A of the moving body 3 has: A moving side wheel 5 having a cable fitting groove formed on the outer periphery similar to the fixed side wheel 4 is fitted and rotatably supported by a wheel shaft 31, and is disposed in the moving body 3 in the main body 1. One end of the spring 6 is supported.

The tip of the spring 6 supporting the moving body 3 is
It is supported on a spring stopper 10 fixed to the main body 1 via a spring engaging pin 11 or via a spring supporting bracket 12 as shown in FIG. At this time, the spring 6
So that the spring 6 can be adjusted so that the spring 6 is slightly stretched even at the closing position of the door D where the moving body is furthest away from the fixed-side wheel. The tip of the spring 6 is supported by the spring stopper 10.

Between the two fixed wheels 4 opposing each other in the main body and the movable wheels 5, a wire 7 such as a wire is provided.
Over. At this time, the cable 7 is fitted into the cable fitting groove engraved on the outer peripheral surfaces of both wheels. Then, one end of the cable 7 is fixed to the cable fixing piece 22 of the wheel mounting base. As shown in FIG. 2, one end of the cable is inserted into the cable fixing piece 22 and fixed by crimping, or it is fixed by screwing, welding or other methods. The cable 7 is hung on the movable wheel 5, and is hung around the fixed wheel 4 so as to make a full circle. Thereafter, the end of the cable is led out of the main body, and the cable end fastener 9 is attached. As shown in FIG. 7, the boss portion 91 is inserted into the holding member 8 which is fixed by crimping to the rope upper piece 92 as shown in FIG. To support.

When the door 8 is closed, the holding tool 8 and the cable end fastener 9 which fits into the hole 83 of the cylindrical portion 81 of the holding tool 8 are attached to the fixed side wheel when the door is closed. The distance to the axis of No. 4 is equal to the distance from the column side to the axis of the cable end fastener 9. Thus, when the door is closed, the position of the cable led out from the outer peripheral surface of the fixed wheel 4 and the position of the cable end fixed to the cable end fastener 9 are determined so as to oppose each other.

Therefore, in order to assemble with the components configured as described above, first, the wheel mount 2 supporting the fixed side wheel 4 is screwed into the groove of the main body 1 and the spring stopper 10 is spotted. Each is fixed to the main body 1 by welding or screwing. At this time, the fixed wheel 4 is attached to the wheel attachment 2 via the wheel shaft 21. As shown in FIG. 5, the moving body 3 having the moving side wheel 5 attached to the rotating self-cloth via the shaft 31 is inserted into the groove of the main body 1 and the spring 6 locked to the moving body 3 is Stopper 1
0 is locked via a locking pin 11 or a spring locking fitting shown in FIG.

Next, the two opposed fixed-side wheels 4,
The cable 7 is stretched between the moving wheels 5 as shown in FIG. At this time, one end of the cable 7 is fixed by crimping to the cable fixing piece 22 of the main body 1 or the wheel mount 2, and the other end is fixed to the cable end fastener 9.

Therefore, in order to mount the automatic door closing device A constructed as described above, as shown in FIG.
There is an embodiment in which the holder 8 is attached to the door D side, and an embodiment in which the main body 1 is attached to the door D side and the holder 8 is attached to the gate as shown in FIG. 8, but the operations are the same. . In FIG. 1, the main body 1 of the present invention is attached to the lower surface of the door by using screws or the like instead of the door stop, and the holding tool 8 is embedded in the upper frame of the door, and the mounting flange 82 is fixed with screws. Then, the cable end fastener 9 projecting from the main body is inserted into the hole 8 of the holder 8.
3 to complete the installation.

When the door D is openably and closably mounted on the pillar P via the hinge H using the automatic closing apparatus of the first embodiment of the present invention assembled as described above, when the door D is opened, the door is opened. The cable 7 is pulled according to the degree. Thereby, the moving body 3 provided with the moving side wheel 5 moves in the main body toward the fixed side wheel while pulling the spring 6. Therefore, the tensile force of the spring increases in accordance with the degree of opening of the door, and spring tension is applied to the door in a direction to close the door.

After the door is opened in this manner, when the external force to open is removed or when an external force is applied in the direction to close the door, the moving body 3 returns to the original position by the tensile force of the spring 6. Works. As a result, the rope 7 is pulled back, and the door D is automatically closed.

FIG. 9 shows the first embodiment of the present invention shown in FIGS. 1 to 7 with a braking means 11 so as to reduce the door closing force acting on the door by a spring force immediately before the door is completely closed. In the second embodiment, a fixed wheel 4, a movable body 3 having a movable wheel 5 attached thereto, and a spring 6 are disposed in the main body 1 in the same manner as in the first embodiment, and one end is fixed to the fixed side. The engaged rope 7 is bridged between the two opposed fixed-side wheels 4 and moving-side wheels 5, the other end of the rope 7 is led out of the main body, and the rope end fastener fitted to the holder 8. 9 and a braking means 11 provided inside the main body 1.

The base end of the braking means 11 is the main body 1
And the other end is respectively locked to the moving body 3 so that the door D
When the door is closed to a predetermined position when the door is closed by the tension of the spring 6, the braking means starts to operate, and when the door moves in the direction of completely closing, the tension exerted by the spring acting on the door is reduced. The door is quietly and securely closed by weakening.

As the braking means 11, besides using an air cylinder (air damper) as shown, a hydraulic damper or a spring type can be used. When the air type or hydraulic braking means 11 is used, FIG.
The rod 11a of the braking means 11 is locked on the moving body 3 as shown in FIG.
Can be disposed along the inner surface in the longitudinal direction of the main body.

In the third embodiment shown in FIGS. 10 to 12, the third embodiment shown in FIG. 1 has the structure of the first embodiment shown in FIG. Things. In the third embodiment, a fixed wheel 4, a movable body 3 having a movable wheel 5 attached thereto, and a spring 6 are provided in the main body 1 in the same manner as in the first embodiment, and one end is connected to the fixed side. The attached rope 7 is bridged between the two opposed fixed-side wheels 4 and moving-side wheels 5, the other end of the rope 7 is led out of the main body, and the rope end fastener 9 fitted to the holder 8. And a link-type braking means 11 on the door D side.
Attach B.

The link type braking means 11B is mounted on the upper frame of the door D by swinging the base end side of the link 111 via a support shaft 113, and a roller 1
When the door is closed to this link 111 and the door D is closed to a certain angle, the roller 112 comes into contact with the door stop, and when the door is closed thereafter, the roller 11 is closed.
In the case where 2 slides along the door stop and changes the angle of the link 111 facing the door, the spring 114 attached to the link 111 acts to resist the swing of the link 111. Ensure that door closure is eased.

The fourth embodiment shown in FIGS.
In the combination of the embodiment and the third embodiment, a fixed-side wheel 4, a moving body 3 with a moving-side wheel or a roller 51 mounted thereon, and a spring 6 are disposed in the main body 1, and one end is fixed to the main body or the like. A rope 7 attached to the side is hung on the moving wheel 5, the other end of the rope 7 is locked to the moving body 3, and a link type braking means 11 C is attached to the door D side.

The link type braking means 11C is attached to the upper frame of the door D by swinging the base end side of the link 111 via the support shaft 113, and the tip end of the link 111 is attached to the moving body 3; When the door is opened / closed, the spring 6 is pulled through the cable, the moving body moves in the main body, the tip of the link 111 moves accordingly, and swings around the support shaft 113. The door can be opened and closed accurately and even when wind pressure acts on the door.

A spring may be provided at a position pivotally connected to the support shaft 113 of the link 111 so as to act in the closing direction of the door. Thus, when the door is closed, the link 111 is also swung. When the door D is closed to a certain angle and the link is swung to a predetermined angle, a spring 114 attached to the link 111 is operated by the action of this spring. ,
The closing of the door is eased by resisting the swing of the link 111.

[0035]

According to the first aspect of the present invention, a fixed-side wheel and a movable-side wheel supported by a movable body are disposed in the main body so as to face each other. Lock the spring that applies the pulling force to the moving body,
The cable spanned between the opposed fixed side and moving side wheels is led out at one end to the main body side and the tip end is pulled out of the main body, and is fastened to the rope end fastener, so the configuration and installation are simple. When the door is released, the external force is removed, and when the external force is removed, the door is securely and automatically closed by the pulling force of this spring. There is. And
In particular, since the main unit is attached to the underside of the Kamoi,
Has the advantage of simplifying installation.
You.

According to the invention described in the second aspect,
Since the braking means is arranged in the main body so as to act on the moving body which is movably inserted into the main body and the moving wheel supported by the moving body, when the door is closed, the tension force of the spring is used. To control the return speed in the door closing direction,
The door has the advantage that it can be opened and closed quietly and smoothly.

According to the third aspect of the present invention,
A spring for disposing a rotatable fixed wheel and a movable wheel rotatably provided in a main body so as to face each other, and applying a tensile force to the movable body in a direction in which a door closes. , And one end of the rope spanned between the two opposed wheels is led to the main body side, and the other end is led out of the main body to be fixed to the rope end fastener, and to swing in the door closing direction. Is attached to the link support shaft, and the door is provided with a braking means that swingably supports the link on the door side so that the tip abuts against the door stop. This has the advantage that the door can be opened and closed smoothly.

According to the fourth aspect of the invention,
Since the main body is attached to the upper frame of the door and the cord end fastener is attached to the side of the gate, there is no protrusion, so that there is an advantage that the appearance around the door is further cleaner.

According to the fifth aspect of the present invention,
A roller for link guide and a movable body provided with a movable wheel rotatably are opposed to each other in the main body, are fitted so as to be movable with each other, and a spring is applied to the movable body so that a tensile force acts on the movable body in a direction in which the door closes. And one end of the rope hung on the moving wheel is fixedly attached to the main body side, and the other end is fixedly attached to the roller mounting shaft for the link guide, and is stretched. The link is pivotably connected to the roller and the link end is fixed to the roller mounting shaft, so that only one link is exposed to the outside, the appearance is clear, and even if the door is closed strongly, this link is used. To be firmly supported,
There is an advantage that the door can be opened and closed smoothly.

According to the sixth aspect of the present invention,
A link is pivotally connected to the door via a link support shaft so as to be swingable, the link tip is engaged with the roller mounting shaft, and the link support shaft acts to resist swinging in the door closing direction. There is an advantage that the door can be closed slowly because the braking means provided with a spring is provided, and the outside is exposed with only one link, and the door can be opened and closed smoothly. .

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment showing a state in which an automatic door closing device of the present invention is attached to a gate.

FIG. 2 is a plan view of a main part of the automatic door closing device of the present invention.

FIG. 3 shows a wheel mounting portion of a main body of the automatic door closing device,
(A) is a plan view, (B) is a longitudinal sectional view, and (C) is a side view.

FIG. 4 shows a spring mounting portion of the main body, where (A) is a plan view,
(B) is a longitudinal sectional view, and (C) is a side view.

FIG. 5 is a front view of a moving object.

FIGS. 6A and 6B show a spring mounting tool, wherein FIG. 6A is a plan view and FIG. 6B is a side view.

FIG. 7 is an external view of a cable-side door-side attachment.

FIG. 8 is a plan view of an embodiment showing a state where the automatic door closing device of the present invention is attached to an upper frame of a door.

FIG. 9 is a plan view of a second embodiment showing a state in which a means for adjusting a speed when the door is closed is provided in the main body of the present invention.

FIG. 10 is a plan view of a third embodiment of the present invention in which a means for adjusting the speed at the time of closing is provided outside the door and the door is opened.

FIG. 11 is a plan view showing a state where the door is closed.

FIG. 12 is a front view showing a link attached to the door.

FIG. 13 is a plan view of a fourth embodiment of the present invention in which a link is provided with a means for adjusting the speed at the time of closing the door and the door is opened.

FIG. 14 is a plan view of the fourth embodiment showing a state where the door is closed.

FIG. 15 is a front view of the link unit.

[Explanation of symbols]

 Reference Signs List A Automatic door closing device P Column D Door S Kamoi H Hinge 1 Main body 2 Wheel mount 3 Moving body 4 Moving wheel 5 Fixed side wheel 51 Roller 6 Spring 7 Cable 8 Holder 9 Cable end fastener 10 Spring stopper 11 Braking means 111 Link 112 Roller 113 Support shaft 114 Spring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05F 1/10-13/04 E05F 17/00

Claims (6)

(57) [Claims] 1. A body having a shape capable of storing a moving body with wheels, a fixed wheel and a spring; a fixed wheel disposed in the body and rotatable; and opposed to the fixed wheel. A movable body provided with a movable wheel rotatably provided; and a movable body and a movable body provided so as to be locked between the main body and the movable body so as to apply a pulling force to the movable body in a closing direction of the door. a spring was; rope end fastening fixing the other end of the rope, derived out of the body; spanned between the two opposing wheels, and a rope which is stretched and fixed at one end to the fixed side And a retainer rotatably supporting the tool; and a main body instead of a door stop mounted on the lower surface of the headgate.
Attached to the Kamoi side and rotatably supported the cable end fastener
An automatic door closing device, wherein a holder is attached to an upper frame of a door. 2. A braking means for acting on a movable body movably fitted and inserted into a main body and a movable wheel supported by the movable body, and for controlling a return speed in a door closing direction by a tensile force of a spring. The automatic door closing device according to claim 1, wherein is disposed in the main body. 3. A device for resisting swinging in a door closing direction.
A working spring is attached to the link shaft, and the tip touches
The link is swingably supported on the door side so that
2. The automatic door closing device according to claim 1, further comprising:
Place. The 4. body stile on a door, according to each attachment has a holder which is rotatably supported the rope end fastener Kamoi side
Item 6. The automatic door closing device according to item 1, 2 or 3 . 5. A main body having a shape capable of housing a moving body with wheels, a roller for a link guide and a spring; a roller for a link guide slidably fitted in the main body;
A movable body disposed opposite to the link guide roller and having a movable wheel rotatably;
A spring disposed between the moving body and the main body and locked to apply a pulling force to the moving body in a direction in which the door closes; a spring hung on a moving wheel of the moving body, and one end on a fixed side; A cable having the other end fixedly attached to the roller mounting shaft for link guide and being stretched; a link pivotally attached to the door side via a link support shaft and having a leading end fixed to the roller mounting shaft. And an automatic door closing device, wherein the main body is attached to the gate. 6. A door is pivotally connected to a door via a link support shaft, and a link support shaft of which a tip is engaged with a roller mounting shaft is resistant to swing in a door closing direction. 6. The automatic door closing device according to claim 5, further comprising a braking means provided with a spring acting on the door.