JP3229778B2 - 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 a door or a door closer embedded in an upper frame of a door, wherein a shaft is fixed to a swinging end of an arm fixed to an output shaft, and a slider pivotally mounted on the shaft is mounted on the door. The present invention relates to an automatic door closing device movably engaged with a groove of a guide rail embedded in a frame or a door, and particularly, when the gap between a door upper frame facing surface and a door facing surface of a door upper frame is large or small due to an earthquake or the like. The present invention relates to an automatic door closing device that does not have a risk of hindering opening and closing of the door if the change of the gap is within a range of an allowable dimension even if the gap changes.

[0002]

2. Description of the Related Art A conventional door self-closing device having a concealed door closer has a shaft fixed to a swinging end of an arm fixed to an output shaft of a door or a door closer embedded in a door upper frame. Is movably engaged with a door upper frame or a groove of a guide rail embedded in the door, and the slider cannot slide up and down in the groove of the guide rail. The automatic door closing device can be mounted on the door frame and the door on condition that the clearance between the door frame and the door is accurately mounted so as to have a reference size.

[0003]

However, when the building is squeezed due to a large earthquake, the passage of months, or the subsidence of the ground, the pivot hinge mounting portion of the upper frame of the door is deformed by the weight of the door, and the door is damaged. If the gap between the door upper frame facing surface and the door upper frame facing surface becomes large, the tip of the arm is lifted and the arm is deformed. When an external force is applied, a force is applied to the slider to get out of the guide rail, and the running resistance of the slider is increased, which may hinder opening and closing of the door. If the gap between the door upper frame facing surface and the door upper frame facing surface becomes smaller, the shaft and the guide rail interfere, or the arm and the door interfere with each other, which hinders the opening and closing of the door. There was something wrong.

The present invention has been made in view of the above points, and the gap between the door upper frame facing surface of the door and the door upper frame facing the door changes from the reference dimension at the time of installation to either large or small. If the change in the gap is within the allowable range, the arm deforms due to the lifting of the tip of the arm, which causes the opening and closing of the door, and the rotational moment is applied to the output shaft of the door closer due to the deformation of the arm. It is possible to avoid the application of external force other than the above and increase the running resistance of the slider, or the interference between the shaft and the guide rail and between the arm and the door. In order to provide an automatic closing device that does not impair the function of the earthquake-resistant door in case of emergency
I have.

[0005]

According to a first aspect of the present invention, as a means for solving the above-mentioned problem, a swinging end of an arm 2 fixed to an output shaft 1a of a door closer 1 provided on an upper portion of a door D is provided. A self-closing door in which a shaft 3 is fixedly mounted and a slider 4 pivotally mounted on the shaft 3 is movably engaged with a groove 5a of a guide rail 5 formed of a C-shaped cross section provided in a door upper frame W. In the device, the slider 4 is arranged on the shaft 3
The slider 3 is provided so as to be slidable and rotatable with respect to the shaft 3 and cannot be detached by a slider detachment preventing plate 6 fixed to the tip of the shaft 3, and the slider 4 and the slider detachment preventing plate 6 are resiliently displaced. An elastic member 7 is attached to the shaft 3 so as to be sandwiched, and the slider 4 and the slider detachment preventing plate 6 are
Groove 5a of the guide rail 5 so that it can move up and down
Are provided, and an automatic door closing device is provided. According to a second aspect of the present invention, as a means for solving the above-described problem, a shaft 3 is fixed to a swinging end of an arm 2 fixed to an output shaft 1a of a door closer 1 provided on a door upper frame W, In a self-closing device in which a slider 4 pivotally mounted on a door 3 is movably engaged with a groove 5a of a guide rail 5 formed of a C-shaped groove provided on a door D, the slider 4 is provided with the shaft 3 The slider 3 is slidably and rotatable with respect to the shaft 3 and cannot be detached by a slider detachment prevention plate 6 fixed to the end of the shaft 3, and is elastically sandwiched between the slider 4 and the step 3 a of the shaft 3. An elastic member 7 is attached to the shaft 3 so that the slider 4 can move up and down in the groove 5a of the guide rail 5 so that the groove 5a of the guide rail 5 is formed deep. Features automatic closing There is provided an apparatus.

[0006]

[Action]

<Effect of the First Invention> When the gap between the door upper surface W and the door upper surface of the door D is maintained at the standard size at the time of installation, the arm may be used for many years. 2 is lifted by the urging of the elastic member 7, it is possible to avoid the deformation of the arm and the application of an external force other than the rotational moment to the output shaft of the door closer due to the deformation of the arm and the increase in the running resistance of the slider. There is no hindrance to opening and closing the door. Even if the gap between the door facing surface of the upper door frame W and the facing surface of the door D of the door D becomes larger than the standard size C1 due to an earthquake, the lapse of months, or the subsidence of the ground, the allowable maximum size C2 is exceeded. If it does not become too large, the slider detachment preventing plate 6 compresses the elastic member 7 and descends in the groove 5a of the guide rail 5 integrally with the shaft 3 by the changed dimension, and an abnormal lifting external force acts on the tip of the arm 2. Therefore, the deformation of the arm and the application of external force other than the rotational moment to the output shaft of the door closer due to the deformation of the arm and the increase in running resistance of the slider can be avoided, and the opening and closing of the door is not hindered. Also, if the dimensional change of the gap becomes smaller than the standard size C1 but not smaller than the allowable minimum size C3, the shaft 3, the slider 4, the slider detachment prevention plate 6, and the elastic member 7 are relatively installed. While maintaining the positional relationship, the guide rail 5
Can move upward in the groove 5a, the shaft 4 and the guide rail 5 interfere with each other, or the arm 2 and the door D interfere with each other, which hinders the opening and closing of the door, and the deformation of the arm and the deformation of the arm The application of an external force other than the rotational moment to the output shaft of the door closer and the increase in the running resistance of the slider can be avoided, and the opening and closing of the door is not hindered.

<Effect of the Second Invention> Even if many months have passed, as long as the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is maintained at the standard size at the time of installation, Arm 2
Is lifted by the bias of the elastic member 7,
The deformation of the arm and the application of an external force other than the rotational moment to the output shaft of the door closer due to the deformation of the arm and the increase in running resistance of the slider can be avoided, and the opening and closing of the door is not hindered. Due to an earthquake, the passage of many months, or the like, even if the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D becomes smaller than the standard size C1, it is smaller than the allowable minimum size C3. If not, the step 3a of the shaft 3 compresses the elastic member 7 so that the slider disengagement prevention plate 6 and the shaft 3 have the groove 5
a, the shaft 4 and the guide rail 5 interfere with each other, or the arm 2 and the door D interfere with each other, thereby hindering the opening and closing of the door, the deformation of the arm, and the output of the door closer accompanying the deformation of the arm. It is possible to avoid the application of an external force other than the rotational moment to the shaft and the increase in the running resistance of the slider, and there is no hindrance to opening and closing the door. Further, if the dimensional change of the gap does not become larger than the allowable maximum dimension C2 even if the dimensional change of the gap becomes larger than the standard dimension C1, the shaft 3, the slider 4, the slider detachment preventing plate 6, and the elastic member 7 are relatively installed. While maintaining the positional relationship, the guide rail 5
Can be moved upward in the groove 5a, and the deformation of the arm 2 and the application of an external force other than the rotation moment to the output shaft 1a of the door closer 1 due to the deformation of the arm 2 and the increase in running resistance of the slider 4 can be avoided. There is no hindrance to opening and closing the door.

[0008]

FIG. 1 (a), FIG. 1 (b), (c), (d), and FIG.
This will be described with reference to FIG. In the automatic door closing device of this embodiment, the door closer 1 is embedded in a recess d1 formed on the door upper frame facing surface of the door D so as not to be seen from both sides of the door, and the door upper frame W is placed on the door D facing the door upper frame. A strip-shaped arm 2 is inserted into a concave portion d2 formed so as to secure a large gap between the facing surface, and a door suspension side end of the arm 2 is fixed to the output shaft 1a of the door closer 1 and swings. A shaft 3 protrudes upward from the end and is fixedly mounted. A slider (roller or slide block) 4 is pivotally slidably and rotatably axially mounted on the shaft 3. It is fixed to prevent the slider 4 from detaching from the shaft 3, and is elastically sandwiched between the slider 4 and the slider detachment prevention plate 6 in a resilient state and the shaft 3 passes through the center (a conical screwed member). Coil spring) 7 attached, other Recess W guide rails formed on the door facing surface of the door upper frame W
1, a guide rail 5 made of a C-shaped channel (aluminum or steel) is accommodated and fixed with screws 8, and the door 4 is opened and the slider 4 is moved to the guide rail 5.
Groove 5a from a portion 5a 'in which the rail edge of groove 5a is notched.
, The door D is half-closed, the slider 4 is moved to the approximate center of the guide rail 5, and then the slider stopper 9 is fitted into the groove 5a from the notched portion 5a ', and is slid and fixed with screws. Thus, the slider 4 is configured to be movable in the rail direction and not to escape. Further, in the automatic door closing device of this embodiment, the groove 5a of the guide rail 5 is formed to be as deep as necessary so that the slider 4 and the slider detachment preventing plate 6 can move up and down in the groove 5a of the guide rail 5. I have. Therefore, even if the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D becomes larger than the standard size C1 due to an earthquake or the like, if the gap does not become larger than the allowable maximum size C2, the slider The detachment preventing plate 6 compresses the elastic member 7 and descends in the groove 5a of the guide rail 5 by a change dimension integrally with the shaft 3. If the size of the gap is in the range of C1 or C2, the slider 4 is
The guide rail 5 carries a half of the weight of the arm 2 on the swinging end of the arm 2 via the elastic member 7 and the slider 4. Further, if the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D becomes smaller than the standard size C1, it does not become smaller than the allowable minimum size C3.
The shaft 3, the slider 4, the slider detachment preventing plate 6, and the elastic member 7 can move upward in the groove 5 a of the guide rail 5 while maintaining the relative positional relationship at the time of building.

Next, the operation of the embodiment of the automatic door closing device of the first invention of the present invention configured as described above will be described with reference to FIGS. 1 (a), (c), (d) and (e).
This will be described with reference to FIG. At the time of building, a gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is secured to a standard size, so that the slider 4 is pivoted toward the arm 2 by the bias of the elastic member 7. 3 and is lowered into the groove 5a of the guide rail 5. The groove 5a of the guide rail 5 secures a gap above the slider 4 in which the slider 4 can move, and separates the slider. A gap in which the slider detachment prevention plate 6 can move is secured above the prevention plate 6. The tip of the arm 2 is lifted by the bias of the elastic member 7 so as not to hang down. Therefore, as long as months have passed, as long as the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is maintained at the standard size, the tip of the arm 2 does not hang down. An external force other than a rotational moment is not applied to the output shaft of the door closer due to the deformation or the deformation of the arm, and the running resistance of the slider can be prevented from being increased, and the opening and closing of the door is not hindered. However, the building squeaks due to an earthquake, the passage of months, or the subsidence of the ground, and the pivot hinge attachment portion of the door upper frame is deformed by the weight of the door, and the door upper frame W
If the dimensional change of the gap between the door facing surface of the door D and the door upper frame facing surface of the door D does not become larger than the standard size C1 but becomes larger than the allowable maximum size C2, the tip of the arm 2 While being separated from the door facing surface by the dimension change, the slider detachment preventing plate 6 compresses the elastic member 7 and descends in the groove 5a of the guide rail 5 integrally with the shaft 3 by the change dimension. However, the state where the tip of the arm 2 is lifted by the bias of the elastic member 7 is maintained. Slider 4
Is maintained at a lowered position in the groove 5a of the guide rail 5. Therefore, if the dimensional change is larger than the standard size C1 but not larger than the allowable maximum size C2, the tip of the arm 2 does not hang down. The application of external force other than the rotational moment and the increase in running resistance of the slider can be avoided, and the opening and closing of the door is not hindered. In addition, the building is squeezed due to an earthquake, the passage of months, or the subsidence of the ground, and the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is smaller than the standard size C1. If it is not smaller than the permissible minimum dimension C3, the groove of the guide rail 5 is maintained while maintaining the relative positional relationship between the shaft 3, the slider 4, the slider detachment preventing plate 6 and the elastic member 7 at the time of installation. 5a can be moved up. The arm 2 does not deform because no abnormal pushing force is applied to the tip. The tip of the arm 2 approaches the door facing surface of the upper door frame W. Therefore, if the dimensional change is smaller than the standard size C1 but not smaller than the allowable minimum size C3, the slider 4 and the guide rail 5 interfere with each other, or the arm 2 and the door D interfere with each other, which hinders the opening and closing of the door. It can be avoided that the arm is deformed and that an external force other than the rotational moment is applied to the output shaft of the door closer due to the deformation of the arm and the running resistance of the slider is increased, and that the opening and closing of the door is not hindered. .

Next, an embodiment of the automatic door closing device according to the second invention of the present application will be described with reference to FIGS. 2 (a), 2 (b), 2 (c) and 2 (d). In the automatic door closing device of this embodiment, the door closer 1 is embedded in a recess W2 formed on the door facing surface of the door upper frame W so as not to be seen from both sides of the door, and a band is formed in a recess d2 formed on the door upper frame facing surface of the door D. The plate-shaped arm 2 is inserted and the end of the arm 2 on the side of the door hanging end is connected to the output shaft 1 of the door closer 1.
a, and a shaft 3 protrudes downward from the swinging end and is fixedly mounted. A slider 4 is pivotally attached to the shaft 3 so as to be slidable and rotatable in the axial direction. Is fixed to prevent the slider 4 from coming off the shaft 3, and the slider 4
The elastic member 7 is attached to the step portion 3a of the shaft 3 formed on the opposite side to the slider 4 so as to be sandwiched between the slider 4 in a resilient state and the shaft 3 passes through the center. A guide rail 5 made of a channel material having a C-shaped cross section is accommodated in the recess d3 for the guide rail, fixed with screws 8, and the door D is opened, and the slider 4 is moved to the rail 5a of the groove 5a of the guide rail 5. The edge 5 is cut into the groove 5a from the cutout portion 5a ', the door D is half-closed, the slider 4 is moved to the approximate center of the guide rail 5, and then the slider stopper 9 is cut out from the cutout portion 5a'. 5a, the slider 4 is fixed by a screw by sliding, so that the slider 4 is movable in the rail direction and is irreversibly engaged.
Furthermore, when the clearance between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is secured to a standard size at the time of installation, the automatic door closing device of this embodiment can be configured to use the slider 4 and the slider 4. The guide rail 5 is moved so that the detachment preventing plate 6 is in close contact with the slider 4 so that the slider 4 can move upward in the groove 5a of the guide rail 5 and the slider detachment preventing plate 6 can move downward in the groove 5a of the guide rail 5. Groove 5a is formed as deep as necessary. Therefore, even if the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D becomes smaller than the standard size C1 due to an earthquake or the like, if the gap does not become smaller than the allowable minimum size C3, the shaft is The third step 3a compresses the elastic member 7 so that the slider detachment preventing plate 6 and the shaft 3 are relatively lowered in the groove 5a of the guide rail 5 by the changed dimension. When the size of the gap is in the range of C1 to C3, the slider 4 is at a position lowered in the groove 5a of the guide rail 5, and is の of the weight of the arm 2 applied to the swing end of the arm 2. The guide rail 5 carries the elastic member 7 and the slider 4. Further, if the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is larger than the standard size C1, but not larger than the allowable maximum size C2, the shaft 3 and the slider The guide rail 5 can be moved upward in the groove 5a while maintaining the relative positional relationship between the slider 4, the slider detachment preventing plate 6 and the elastic member 7 at the time of building.

Next, the operation of the embodiment of the automatic door closing device according to the second invention of the present invention configured as described above will be described with reference to FIGS.
This will be described with reference to (c) and (d). At the time of installation, a gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is secured to a standard size, so that the slider 4 is moved to the slider detachment preventing plate 6 by the bias of the elastic member 7. The slider 5 is in close contact with the guide rail 5 and is lowered into the groove 5a. The groove 5a of the guide rail 5 secures a gap above the slider 4 in which the slider 4 can move, and the lower part of the slider release prevention plate 6 On the side, a gap in which the slider detachment prevention plate 6 can move is secured. The tip of the arm 2 is lifted by the bias of the elastic member 7 so as not to hang down.
Therefore, as long as months have passed, as long as the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D is maintained at the standard size, the tip of the arm 2 does not hang down. An external force other than a rotational moment is not applied to the output shaft of the door closer due to the deformation or the deformation of the arm, and the running resistance of the slider can be prevented from being increased, and the opening and closing of the door is not hindered. However, earthquakes and the passage of months,
Alternatively, even when the building is squeezed due to land subsidence or the like, and the dimensional change of the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D becomes smaller than the standard size C1, the allowable minimum size C3. If not smaller, the tip of the arm 2 is relatively close to the door upper frame facing surface of the door D, and
The step 3a of the shaft 3 compresses the elastic member 7, and the slider detachment preventing plate 6 and the shaft 3 relatively descend within the groove 5a of the guide rail 5 by the changed dimension. The state in which the tip of the arm 2 is lifted by the bias of the elastic member 7 is maintained, and the slider 4 remains lowered in the groove 5 a of the guide rail 5 by the bias of the elastic member 7. Therefore, if the dimensional change of the gap is smaller than the standard dimension C1 but not smaller than the allowable minimum dimension C3, the shaft 4 and the guide rail 5 interfere or the arm 2 and the door D interfere to open and close the door. It is possible to avoid hindrance, deformation of the arm and the application of external force other than the rotational moment to the output shaft of the door closer due to the deformation of the arm, and increase in the running resistance of the slider,
There is no hindrance to opening and closing the door. In addition, the building is squeezed due to an earthquake, the passage of months, or the subsidence of the ground, and the pivot hinge attachment portion of the door upper frame is deformed by the weight of the door, so that the door facing surface of the door upper frame W and the door D are closed. If the dimensional change of the gap with the door upper frame facing surface becomes larger than the standard size C1, but not larger than the allowable maximum size C2,
The tip of the arm 2 is separated from the surface of the door D facing the upper frame of the door D, and the shaft 3, the slider 4, and the slider detachment preventing plate 6
And the elastic member 7 can move upward in the groove 5a of the guide rail 5 while maintaining the relative positional relationship at the time of installation. The arm 2 does not deform because no abnormal pushing force is applied to the tip. Therefore, if the dimensional change of the gap does not become larger than the allowable maximum size C2 even if the dimensional change of the gap becomes larger than the standard size C1, the tip of the arm 2 does not hang down by its own weight (except for many months after the dimensional change). Since the slider 4 is easily accommodated in the groove 5a of the guide rail 5, the deformation of the arm 2 and the external force other than the rotation moment applied to the output shaft 1a of the door closer 1 due to the deformation of the arm 2 and the movement of the slider 4 An increase in resistance can be avoided, and there is no hindrance to opening and closing the door.

In the automatic door closing device of the present invention, the concealed door closer 1 is attached to one of the upper side surface of the door D and the side surface of the door upper frame W, and the guide rail 5 is connected to the upper side surface of the door D or The present invention is also applied to a case where the concealed type door closer 1 and the guide rail 5 are attached to one of the side surfaces of the door upper frame W so as to face each other.
Further, although the above-mentioned embodiments all show the automatic door closing device provided with the concealed type door closer, the present invention is also applied to the automatic door closing device provided with the same arm rail type swing door door closer. The elastic member 7 is not limited to a conical spirally wound coil spring, and may be a cylindrically spirally wound coil spring or rubber.

[0013]

As described above, according to the automatic door closing apparatus of the present invention, the gap between the door upper frame facing surface and the door upper frame facing surface is larger or smaller than the reference dimension at the time of installation. If the change in the gap is within the range of the allowable dimension, the arm is deformed due to the lifting of the tip of the arm which causes the opening and closing of the door, and the output of the door closer accompanying the deformation of the arm is changed. It is possible to avoid the application of external force other than the rotational moment to the shaft and the increase in the running resistance of the slider, or to avoid the interference between the shaft and the guide rail or between the arm and the door. When applied to a door or the like, the function of the earthquake-resistant door is not impaired in an emergency.

[Brief description of the drawings]

FIG. 1 relates to an embodiment of an automatic door closing device according to the first invention of the present application,
(A) is a front view, (b) is an Ib-Ib sectional view in (a), (c) is an Ic-Ic enlarged sectional view in (a),
(D) shows a case where the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D in (c) becomes the maximum dimension C2 within a permissible range of a dimensional change from the standard dimension C1. FIG. 7E shows a case where the gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D in FIG. FIG.

FIG. 2 relates to an embodiment of the automatic door closing device according to the second invention of the present application,
(A) is a front view, (b) is an enlarged sectional view taken along the line IIb-IIb in (a), and (c) is a gap between the door facing surface of the door upper frame W and the door upper frame facing surface of the door D in (b). Is standard size C1
FIG. 6D shows a case where the dimensional change becomes the minimum dimension C3 within the allowable range, and FIG. 6D shows a standard case where the gap between the door facing surface of the door upper frame W and the door D facing the door D in FIG. Dimension C
The figure which shows the case where the dimensional change became the maximum dimension C2 within the permissible range rather than 1.

[Explanation of symbols]

 D ... door, W ... door upper frame, 1 ... door closer, 1a ... output shaft, 2 ... arm, 3 ... shaft, 3a ... step portion, 4 ... Slider 5 Guide rail 5a Groove 6 Slider separation preventing plate 7 Elastic member 8 Screw 9 Slider stopper

Claims (2)

(57) [Claims] An arm fixed to an output shaft of a door closer provided on an upper part of a door has a shaft fixed to a swinging end, and a slider pivotally mounted on the shaft is provided on a door upper frame. In the automatic door closing device movably engaged with a groove of a guide rail made of a channel member, the slider is provided so as to be slidable and rotatable with respect to the shaft, and is fixed to a tip of the shaft. An elastic member is attached to the shaft so that the slider cannot be detached by the slider detachment preventing plate, and is elastically sandwiched between the slider and the slider detachment preventing plate. An automatic door closing device, wherein a groove of the guide rail is formed so as to be able to move up and down in the inside. 2. A groove having a C-shaped cross section, wherein a shaft is fixed to a swinging end of an arm fixed to an output shaft of a door closer provided on a door upper frame, and a slider pivotally mounted on the shaft is provided on the door. In the automatic door closing device movably engaged with a groove of a guide rail made of a material, the slider is provided so as to be slidable and rotatable with respect to the shaft, and a slider detachably fixed to a tip of the shaft. An elastic member is attached to the shaft so that it cannot be detached by the prevention plate and is resiliently sandwiched between the slider and the step of the shaft, so that the slider can move up and down in the groove of the guide rail. Wherein the groove of the guide rail is formed deep.