JP2001234663A - Stopper for door closer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stopper for a door closer by which the tightening degree of serrations can be visually checked and the serrations can be reliably tighten. SOLUTION: In the external stopper A of the door closer which can maintain a door D in an opened condition at an arbitrary position by engaging a pair of serrations with each other by operating a tightening member 11, moving members 10, 16, 19 which are moved by tightening the tightening member 11 are provided, and the reliable engagement of the pair of serrations by these moving members can be visually recognized from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closer stop device for holding a door in an open state, and more particularly to an exterior stop device capable of arbitrarily changing a door stop angle from outside.

[0002]

2. Description of the Related Art As a stop device of this kind, there is a Japanese Utility Model No. 1
In Japanese Patent No. -30526, a stop cam is interposed at a connection point between a main arm of a door closer and a stop joint,
The stop cam and the main arm are connected via a pair of serrations, and both are provided so as to be able to rotate integrally with the stop joint. Inside the stop joint, the stop cam is engaged when the door is opened to a predetermined angle. There is disclosed a device incorporating a mechanism for preventing the door from returning in the closing direction. According to this device, the stop position of the door can be adjusted by changing the mounting angle of the stop cam with respect to the main arm by loosening the bolt for tightening the pair of serrations.

[0003]

In the conventional stop device, since the engagement of the serration is performed by tightening a bolt, whether or not the serration is engaged is left to the judgment of the operator. As is well known, the serrations have irregularities, and the height of the irregularities is very small, so that the bolts may be tightened while the projections of the pair of serrations are in contact with each other. When installed in this manner, the serrations will finally come into contact with the opening and closing of the door, but the stop device may not operate due to insufficient tightening of the bolts. In this case, the bolts must be tightened again, which causes unnecessary work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door closer stop device which can visually confirm the tightening condition of serrations and can surely tighten serrations.

[Means for Solving the Problems]

[0005]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fastening member (11).
In the exterior stop device (A) of the door closer which can maintain the door (D) open at an arbitrary position by engaging the pair of serrations by the operation of (1), the door (D) is moved by tightening the tightening member (11). A stop device for a door closer, comprising a movable member (10, 16, 19), wherein it is possible to visually recognize from the outside that the pair of serrations have reliably engaged by the movement of the movable member. It is.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. The door D is suspended from the vertical frame W by a pivot hinge or a hinge (not shown). The bracket 1 is attached to the vertical frame W, and the bracket 1 is connected to the door closer DC attached to the door D via the link 2 and the arm 3. When the door D is opened, the spring in the door closer DC (not shown) is compressed, and when the compression of the spring is released, the door D closes.

At this time, an exterior stop device A is provided to hold the door D at a certain position. The exterior stop device A is usually provided at a connection portion between the bracket 1 and the arm 2 and is formed by a cam 6, a steel ball 12, and a coil spring 13 described later. To prevent the rotation of the link 2 and hold the door D at an arbitrary position.

Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a partially enlarged cross-sectional view of the exterior stop device A. A connecting member 4 is fixed to the bracket 1 by welding. The upper bush 5, the link 2, the cam 6, and the lower bush 7 are inserted into the connecting member 4 in this order. The tubular member 8 is press-fitted into the connecting member 4 so as not to move. Then, the plate member 9 and the cover 10 are fixed by the screws 11. The lower bush 7 is not fixed to the connecting member 4 and rises when the screw 11 is tightened. The upper bush 5 and the lower bush 7 are formed of resin in order to prevent contact between metals.

On the outer periphery of the connecting member 4, there is formed a vertical serration shaft which meshes with a vertical serration hole provided in the cam 6. FIG. 2A shows a state in which the serrations are not engaged. When the screw 11 is tightened, the plate member 9 and the cover 10 are raised, and accordingly, the plate member 9 pushes up the lower bush 7. The pushed-up lower bush 7 raises the cam 6 to engage the serration between the connecting member 4 and the cam 6 (see FIG. 2B).

[0010] A steel ball 12 and a coil spring 13 are built in the link 2, and the steel ball 12 is constantly pressed against the cam 6 by using the repulsive force of the coil spring 13.

Next, confirmation of the setting of the stop device will be described. As shown in FIG. 3, two grooves 8a and 8b are formed in the cylindrical member 8 at symmetrical positions. As shown in FIG. 4, a detent member 9a formed in the dish member 9 is provided in the groove 8a.
Engage. The pin 1 formed on the cover 10 is inserted into the groove 8b.
4 engage. Thereby, the plate member 9 is raised along the groove 8a by tightening the screw 11, and the cover 10 is
Rise along.

The outer periphery of the plate member 9 has a portion 9b of a different color.
Is provided. The different color portion 9b is formed over a range of about a quarter of the outer circumference of the plate member 9. For example, red can be used for the different color portion 9b and blue can be used for the other portions, but any color can be used. Window 1 on cover 10
The outer periphery of the plate member 9 can be confirmed from the window 15.

FIG. 5 shows the rotation operation of the cover 10 when the stop device is set. FIG. 5 (A)
-1 and (A) -2 in FIG. 5 show a state where the screw 11 has begun to be tightened. In this state, the stop does not work because the serrations of the connecting member 4 and the cam 6 have not yet been engaged.
The cover 10 has a pin 14 formed in the cover 10 and a groove 8b.
To maintain a certain direction to follow. Further, the different color part 9b can be confirmed from the window part 15.

FIGS. 5B-1 and 5B-2 show a state in which the screws 11 are tightened to some extent. By tightening the screw 11, the cover 10, the plate member 9, and the lower bush 7 are raised, and the cam 6 is pushed upward. At this time, the rotation preventing member 9a formed on the plate member 9 is
The plate member 9 rises along the groove 8a. The cover 10 is provided with the groove 8
rise along b. In this state, the serrations are almost meshed with each other, but are not yet securely tightened and are unstable. Further, the different color part 9b can be confirmed from the window part 15.

5 (C) -1 and FIG. 5 (C) -2, the screw 11 is further tightened to fit the pin 14 into the bent portion of the groove 8b.
Are engaged. The bent portion is formed so as to slightly rise in the bending direction, and a locking portion 8c is provided at the final portion. The cover 10 is raised by tightening the screw 11, but when the pin 14 is raised to a certain position, it is engaged with the bent portion of the groove 8b. When the screw 11 is tightened, the cover 10 tries to ascend further and rises while rotating along the bent portion.
At this time, the different color portion 9b can still be confirmed from the window portion 15.

FIGS. 5D-1 and 5D-2 show the state in which the screw 11 is completely tightened. In this state, the pin 14 is engaged with the engaging portion 8c which is the final portion of the bent portion. It is set such that the serrations of the connecting member 4 and the cam 6 are reliably engaged only when the pin 14 is engaged with the engaging portion 8c. In this state, the cover 10 is
(A) -1 and (A) -2 of FIG. 5 are rotated about one-quarter, and no different color portion can be confirmed from the window portion 15; You can check. That is, when the serrations are securely engaged, a color different from that at the time of setting can be confirmed from the window portion 15.

Next, a second embodiment of the present invention will be described. Parts similar to those of the first embodiment are denoted by the same reference numerals. This embodiment is different from the first embodiment in that 10b and 10c separated by a linear portion 10a on the outer periphery of the cover 10 have two color portions. These two colors may be any colors. As shown in FIG. 6, the cylindrical member 8 has only the groove 8b. This groove 8b
7, a pin 14 provided on the cover 10 is engaged.

A set of stop devices according to the second embodiment will be described with reference to FIG. (A) -1 of FIG. 8 and FIG.
(A) -2 is a state where the screw 11 has begun to be tightened. In this state, the stop does not work because the serrations of the connecting member 4 and the cam 6 have not yet been engaged. The cover 10 maintains a certain direction because the pins 14 formed on the cover 10 are along the grooves 8b.

FIGS. 8B-1 and 8B-2 show a state in which the screw 11 is tightened to some extent. By tightening the screw 11, the cover 10, the plate member 9, and the lower bush 7 are raised, and the cam 6 is pushed upward. At this time, the cover 10 rises along the groove 8b of the tubular member 8.
In this state, the serrations are almost meshed with each other, but are not yet securely tightened and are unstable.

8 (C) -1 and FIG. 8 (C) -2, the screw 11 is further tightened and the pin 14 is inserted into the bent portion of the groove 8b.
Are engaged. The bent portion is formed so as to slightly rise in the bending direction, and a locking portion 8c is provided at the final portion. The cover 10 is raised by tightening the screw 11, but when the pin 14 is raised to a certain position, it is engaged with the bent portion of the groove 8b. When the screw 11 is tightened, the cover 10 tries to ascend further and rises while rotating along the bent portion.
At this time, the cover 10 is rotated by about 1/8, and the two colors attached to the cover 10 can be confirmed from the front of the mounted state.

FIGS. 8D-1 and 8D-2 show the state in which the screw 11 is completely tightened. In this state, the pin 14 is engaged with the engaging portion 8c which is the final portion of the bent portion. It is set such that the serrations of the connecting member 4 and the cam 6 are reliably engaged only when the pin 14 is engaged with the engaging portion 8c. In this state, the cover 10 is
(A) -1 and (A) -2 of FIG. 8 are rotated about a quarter, and one of the color portions of the cover 10 is confirmed from the front of the door D in the mounted state. You can do it. That is, when the serrations are securely engaged, a color different from that at the time of setting is seen. Also,
The orientation of the linear portion 10a provided in the center of the cover 10 instead of the two colors is changed from (A) -1 in FIG. 8 and (A) -2 in FIG. 8 to (D) -1 in FIG. (D) -2 in FIG.
It may be confirmed that the angle changes by 90 degrees.

Next, a third embodiment of the present invention will be described. Parts similar to those in the first and second embodiments are denoted by the same reference numerals. This embodiment will be described with reference to FIGS. A connecting member 4 is fixed to the bracket 1 by welding. Connecting member 4
A moving member 16 having a ring portion 16a is fitted in the moving member 16, and the moving member 16 is formed so as to cover the upper cavity of the connecting member 4. The upper bush 5, the link 2, the cam 6, and the lower bush 7 are inserted into the connecting member 4 in this order. Then, the plate member 9 and the cover 10 are fixed by the screws 11. The lower bush 7 is not fixed to the connecting member 4 and rises when the screw 11 is tightened. The upper bush 5 and the lower bush 7 are formed of resin in order to prevent metal-to-metal contact as in the first and second embodiments.

A pressing member 17 which rises together with the screw 11 by tightening the screw is fixed to the tip of the screw 11. The moving member 16 can move upward independently of the ring portion 16a. A cap 18 is provided on the upper part of the connecting member 4 so as to cover the moving member 16, and a window 18 a is formed in a part of the cap 18 so that the tip of the moving member 16 can be confirmed. The tip of the moving member 16 is formed in a color that can be easily recognized from a window 18 a formed in the cap 18. As shown in FIG.
6a and the moving member 16 are formed integrally,
Since the notch 16b is provided, the moving member 16 can move in the vertical direction independently of the ring 16a.

The meshing of the outer periphery of the connecting member 4 with the vertical serrations provided on the cam 6 is the same as in the first and second embodiments, and will not be described.

The setting of the stop device according to the third embodiment will be described with reference to FIG. In FIG. 9A, when the screw 11 is tightened, the cover 10 and the plate member 9 are raised, and the lower bush 7 is also raised by the plate member 9. The lower bush 7 raises the cam 6 so that the connection member 4 and the serrations formed on the cam 6 mesh with each other. As the screw 11 rises, the pressing member 17 fixed to the screw 11 rises.

In FIG. 9B, when the pressing member 17 rises and comes into contact with the moving member 16, the moving member 16 rises and the tip end thereof cannot be seen from the window 18 a of the cap 18. That is, when the moving member 16 is completely invisible from the window 18a, the serration between the connecting member 4 and the cam 6 is reliably engaged.

Next, a fourth embodiment of the present invention will be described. First to first
Parts similar to those of the third embodiment are denoted by the same reference numerals. This embodiment will be described with reference to FIGS. This embodiment is different from the third embodiment in that the moving member moves not in the vertical direction but in the horizontal direction. In this embodiment, an engaging member 17a is protruded from a pressing member 17 fixed to the screw 11. The moving member 19 has a space 19 a that is slightly larger than the diameter of the pressing member 17. Further, a locking piece 19b is formed on the moving member 19 so as to protrude into the space 19a. The moving member 19 can be moved in the horizontal direction by deformation of the elastic ring 20. As in the third embodiment, a cap 18 is provided on the upper part of the connecting member 4 so as to cover the moving member 19, and a part of the cap 18 is provided with the moving member 19.
A window 18a is formed so that the front end of the window 18a can be confirmed. The tip of the moving member 19 is formed in a color that can be easily recognized from the window 18 a formed in the cap 18.

A set of stop devices according to the fourth embodiment will be described with reference to FIG. In FIG. 11A, when the screw 11 is tightened, the cover 10 and the plate member 9 are raised, and the lower bush 7 is also raised by the plate member 9. The lower bush 7 raises the cam 6 so that the connection member 4 and the serrations formed on the cam 6 mesh with each other.
As the screw 11 rises, the pressing member 17 fixed to the screw 11 rises. At this time, the right end of the moving member 19 in the drawing protrudes from the window 18a, and is in a state where it can be confirmed from the outside.

In FIG. 11B, when the pressing member 17 rises while rotating, the engaging member 17 a formed on the pressing member 17 at a certain height is inserted into the space 19 a of the moving member 19. It engages with the formed locking piece 19b. At this time, the elastic ring 20 is compressed by the moving member 19, and the end of the moving member 19 cannot be confirmed from the window 18a.
That is, when the moving member 19 is completely invisible from the window 18a, the serration between the connecting member 4 and the cam 6 is reliably engaged.

In the above-described embodiment, the vertical serration is used. However, the present invention is not limited to the embodiment as long as the position of the meshing can be arbitrarily changed, such as a plane serration.

[0031]

As described above, when the screw 11 is tightened, the set state of the stop device can be visually confirmed, and it is easily understood whether or not the stop device has been set securely. Thus, the serration can be reliably set without separation of the serration.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the installation of a door closer provided with an exterior stop device of the present invention.

FIG. 2 is a partially enlarged sectional view of the exterior stop device of the first embodiment.

FIG. 3 is a view showing a cylindrical member of the first embodiment.

FIG. 4 is a view showing a dish member of the first embodiment.

FIG. 5 is a diagram showing a state of screw tightening of the first embodiment.

FIG. 6 is a view showing a cylindrical member of a second embodiment.

FIG. 7 is a view showing a cover of the second embodiment.

FIG. 8 is a diagram illustrating a state in which screws are tightened according to a second embodiment.

FIG. 9 is a partially enlarged sectional view of an exterior stop device of a third embodiment.

FIG. 10 is a diagram illustrating an outline of a moving member according to a third embodiment.

FIG. 11 is a partially enlarged sectional view of an exterior stop device of a fourth embodiment.

FIG. 12 is a diagram showing an outline of a moving member according to a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bracket 2 Link 4 Connecting member 5 Upper bush 6 Cam 7 Lower bush 8 Cylindrical member 9 Plate member 10 Cover (moving member) 11 Screw (tightening member) 16 Moving member (moving member) 17 Pressing member 18 Cap 19 Moving member (Moving member)

Claims (1)

[Claims] 1. An exterior stop device for a door closer capable of maintaining a door open at an arbitrary position by engaging a pair of serrations by operating a tightening member, the movement moving by tightening the tightening member. A stop device for a door closer, further comprising a member, wherein it is possible to visually recognize from the outside that the pair of serrations have reliably meshed by movement of the moving member.