JP2000008696A - Stop angle adjusting mechanism for door closer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arbitrarily adjust the stop angle of a stop device built in a link mechanism of a door closer without using tool. SOLUTION: By moving up and down a cam plate 4 along a bracket shaft 2, for which a recessed portion is linked to a fork arm 5 and outer periphery, outer side serration 6 formed on the bracket shaft 2 and inner side serration of a cam plate 4 are engaged and disengaged, and a relative angle position of the cam plate 4 relative to the bracket shaft 2 is made adjustable. And a spacer 18 is fitted and fixed between a linkage flange 22 and a cam plate fixing collar 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stop angle adjustment mechanism for a door closer (hereinafter simply referred to as a stop angle adjustment mechanism).
In particular, the present invention relates to a stop angle adjusting mechanism that can easily adjust a stop angle of a door closer without using a tool such as a driver.

[0002]

2. Description of the Related Art A device for stopping a door closer, that is, a device for temporarily stopping a door closer in a closing motion,
For example, when carrying luggage into a room, it is convenient that the door does not have to be held by hand.

Various types of door closing devices have been proposed, but one that has a simple structure and reliable operation is incorporated in a link mechanism of the door closer.

As shown in FIG. 1, this stopping device is mounted on a bracket shaft 2 which is usually fixed to a door frame (not shown) via a bracket 1, and has a recess 3 which engages with a click ball described later. A click body such as a click ball (not shown) that is housed in the cylindrical base A of the fork arm 5 rotatably supported on the cam plate 4 and the bracket shaft 2 and urged in the bracket shaft 2 direction. And

Then, the door closer operates in the closing direction, and the fork arm 5 rotates relatively around the bracket shaft 2 with respect to the cam plate 4 fixed to the bracket shaft 2 and is built in the base A thereof. When the click ball is aligned with the concave portion 3 of the cam plate, the click ball enters the concave portion 3 and stops against the closing force of the door closer.

As shown in FIG. 2, this type of stop device can incorporate a stop angle position adjusting mechanism.

That is, in FIG. 2, reference numeral 6 denotes an outer serration formed in the base line direction of the base of the bracket shaft 2 fixed to the bracket 1, and the outer serration 6 is an opening of the mounting hole 7 of the cam plate 4. It can mesh with the inner serration 8 formed on the edge.

The cam plate 4 formed as described above is used.
Is inserted horizontally into a slit 9 formed at the base end of the fork arm 5, and after the mounting hole 7 is aligned coaxially with the rotation axis of the fork arm, the bracket shaft 2 is connected to the base end of the fork arm 5. The inner and outer serrations 8 and 6 are inserted into the bearing holes 11 to engage at appropriate relative angular positions.

The stop angle adjusting mechanism constructed as described above includes the collars 12 and 12, the support plate 13 and the cover 1.
4 together with a set screw 15.

For this reason, if the set screw 15 is loosened, the respective components can be relatively moved in the vertical direction in FIG. 2, so that the engagement between the inner serration 8 of the cam plate 4 and the outer serration 6 of the bracket shaft is established. The stop angle can be adjusted by retightening the set screw 15 after adjusting these relative angular positions.

[0011]

The stop angle adjusting mechanism as shown in FIG. 2 has been used as a matter of course, while exhibiting its intended function. However, every time the angle is adjusted, a driver or the like is used. It is necessary to loosen the set screw 15 with this tool, and there is a resentment that the stop angle cannot be arbitrarily adjusted on the spot.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stop angle adjusting mechanism which can easily adjust the stop angle of a door closer at any time without using a tool such as a driver.

[0013]

In order to achieve the above object, the invention according to claim 1 is characterized in that an outer serration is formed on a part of an outer peripheral surface and a bracket shaft having a locking flange formed at a tip thereof. At the end, a support hole for fitting with the bracket shaft is opened, and a fork arm having a slit perpendicular to the support hole is formed. The fork arm is built in the base end of the fork arm and is urged in the direction of the center axis of the support hole. Click body and
A cam having a recess formed on the outer periphery thereof for engaging with the click body, opening a mounting hole to be fitted with the bracket shaft, and having an inner serration meshing with and engaging with the outer serration at an opening edge of the mounting hole. A plate, a cam plate fixing collar fitted to a bracket shaft on a side opposite to the bracket with respect to the fork arm, and having a flange, and a notch with an oblique angle at the center for viewing the center, and an annular spacer made of an elastic material. In a state where the cam plate is inserted into the slit of the fork arm, the bearing hole and the mounting hole are aligned, and these and the cam plate fixing collar are slidably guided in the axial direction of the bracket shaft, and the spacer is mounted on the bracket. Set the distance between the bracket and the locking flange so that it can be fitted to the shaft, and attach the spacer between the bracket and the fork arm and the cam plate. When fitted to either of the color and the locking flange, characterized in that the outer serration of the inner serration and the bracket shaft of the cam plate is to be aligned in the axial direction of the bracket axis.

According to a second aspect of the present invention, an outer serration is formed on a part of an outer peripheral surface, a bracket shaft having a locking flange formed at a distal end thereof, and a support hole for fitting the bracket shaft at a base end. A fork arm formed with a slit perpendicular to the bearing hole, a click body built into the base end of the fork arm and urged in the direction of the center axis of the bearing hole, and an outer periphery associated with the click body. A cam plate that forms a recess that mates with the bracket shaft to open a mounting hole that fits with the bracket shaft, and that has an inner serration that can mesh with and engage with the outer serration at the opening edge of the mounting hole; Has a notch with an inferior angle, has an annular spacer made of an elastic material, inserts the cam plate into the slit of the fork arm, aligns the support hole and the mounting hole, and braces them. The guide is slidably guided in the axial direction of the shaft, and the distance between the bracket and the locking flange is set so that the spacer can be fitted to the bracket shaft. And when fitted to one of the locking flanges, the inner serrations of the cam plate and the outer serrations of the bracket shaft are aligned in the axial direction of the bracket shaft.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and FIG.
Denotes the bracket, and a bracket shaft 2 is fixed to the lower surface of the bracket 1 by, for example, welding.

An outer bracket 6 is formed substantially at an intermediate portion of the outer peripheral surface of the bracket shaft 2. In this serration, a number of protrusions extending in the generatrix direction of the bracket shaft 2 are continuously provided in the circumferential direction.

A cam plate 4 and a base end of a fork arm 5 are inserted into the bracket shaft 2, the former is inserted into the latter slit 9, and the former mounting hole 7 (see FIG. 2) and the latter support hole are provided. 11 (see FIG. 3) are fitted rotatably and slidably in an aligned state.

In the illustrated embodiment, the upper collar 10 is attached to the bracket shaft 2 between the bracket 1 and the outer serration 6 to reduce the friction torque between the bearing hole 11 of the fork arm and the bracket shaft 2. The upper collar 10 is not an essential component of the present invention.

On the other hand, the bracket shaft 2 on the side opposite to the bracket 1 (ie, below) with respect to the fork arm 5
As shown in FIGS. 3 and 4, a short cylindrical cam plate fixing collar 16 having a flange is slidably fitted thereto.

In the illustrated embodiment, a lower collar 17 is fitted below the bracket shaft 2 in order to reduce the friction torque between the cam plate fixing collar 16 and the bracket shaft 2. This lower collar 17 is not an essential component of the present invention.

On the other hand, as a characteristic configuration of the present invention, a spacer 18 is detachably fitted to the bracket shaft 2.

As shown in FIGS. 5 and 6, the spacer 18 is a member made of an annular elastic material having a notch 19 having an inferior angle (an angle of not less than 90 degrees and not more than 180 degrees) at the center. In the embodiment, handle 2 for easy handling
1 are joined together.

The inner diameter of the spacer 18 in the natural state is set to, for example, about the outer diameter of the lower collar 17 (see FIGS. 3 and 4).

Further, the spacer 18 is mounted on the bracket shaft 2.
In order to be able to fit into the bracket, a locking flange 22 connected to the tip (the lower end in FIGS. 3 and 4) of the bracket shaft 2
The distance between the bracket 1 and the fork arm 5 is the sum of the thicknesses of the fork arm 5 and the cam plate fixing collar 16 and the thickness T of the spacer 18.
(See FIG. 6).

Further, as shown in FIG.
8 is fitted between the locking flange 22 and the cam plate fixing collar 16, the inner serrations 8 of the cam plate 4 and the outer serrations 6 of the bracket shaft 2 are aligned in the axial direction of the bracket shaft. The dimensions have been set.

In the stop angle adjusting mechanism according to an embodiment of the present invention as described above, in a normal state, that is, in a use state of the door closer, as shown in FIG. It is fitted to the bracket shaft 6 between the fixed collar 16 and the locking flange.

As described above, since the notch 19 of the spacer 18 is designed so that the angle with respect to the center thereof is formed at an inferior angle, in other words, the spacer 18 grips more than half the circumference of the lower collar 17. In order to separate the spacer 18 from the bracket shaft 2, it is necessary to elastically deform the spacer 18 in the direction in which the spacer 18 expands, so that the spacer 18 is securely mounted on the bracket shaft 2.

At this time, as described above, the outer serrations 6 of the bracket shaft and the inner serrations 8 of the cam plate are aligned with each other in the axial direction of the bracket shaft 2 and mesh with each other.

Therefore, the rotation of the cam plate 4 around the bracket shaft 2 is restricted, that is, the cam plate 4 is fixed to the bracket shaft 2, so that the fork arm 5 is connected to the bracket shaft 2 as described above. On the other hand, when the relative rotation is made by a predetermined angle, the click body (not shown) built in the fork arm 5 fits into the concave portion 3 of the cam plate 4, so that the door closer stops at the rotation angle.

When the door is pushed in the closing direction with a strong force, the click body gets over the concave portion 3 and disengages them, so that the door rotates in the closing direction thereafter.

To change the stop angle of the door, the relative angular position of the concave portion 3 of the cam plate with respect to the bracket shaft 2 is changed.

For this purpose, the handle 21 is strongly pulled to separate the spacer 18 from the bracket shaft 2, and this is fitted to the bracket shaft 2 between the bracket 1 and the fork arm 5.

At this time, in the illustrated embodiment, the spacer 18 is used.
Is fitted to the bracket shaft 2 so as to grip the upper collar 10 having a larger diameter than the lower collar 17, but as described above, since the spacer 18 is made of an elastic material such as a synthetic resin, for example, The annular portion expands due to its elasticity and is securely attached to the bracket shaft 2 (see FIG. 7).

Then, as shown in FIG. 3, the engagement between the outer serrations 6 of the bracket shaft and the inner serrations 8 of the cam plate is released, and the cam plate 4 becomes free. Alternatively, the cam plate 4 is rotated counterclockwise to reset the relative angular position of the cam plate 4 with respect to the bracket shaft 2.

After resetting the angular position of the cam plate 4, FIG.
The spacer 18 is refitted on the bracket shaft 2 between the cam plate fixing collar 16 and the locking flange 22 as shown in FIG.

At this time, the outer serrations 6 and the inner serrations mesh with each other while maintaining a new relative angular position,
A new stop angle is set in this way.

In the illustrated embodiment, the cam plate fixing collar 16 is interposed between the fork arm 5 and the locking flange 22 to make the rotation smooth. The present invention is established.

In the illustrated embodiment, the spacer 18 is inserted between the bracket 1 and the fork arm 5 when changing the stop angle of the door (see FIG. 3). The fork arm 5 need not be fitted to the
It goes without saying that the angular position of the cam plate 4 may be adjusted with the other hand.

[0039]

As is apparent from the above description, according to the present invention, the forearm and the cam plate mounted on the bracket shaft are moved up and down along the bracket shaft, and the serration inside the cam plate and the outside of the bracket shaft are moved. Since the serrations can be disengaged and the inner and outer serrations engaged can be stably fixed by spacers, the intended purpose of adjusting the stop angle position of the door closer arbitrarily without tools can be achieved. To achieve.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a link mechanism of a conventional door closer having a stop device.

FIG. 2 is an external perspective view showing components of the stop angle adjusting mechanism in a developed state.

FIG. 3 is an enlarged sectional view of a stop angle adjusting mechanism according to an embodiment of the present invention, showing a state when the stop angle is changed.

FIG. 4 is an enlarged sectional view of the stop angle adjusting mechanism according to the embodiment of the present invention, showing a normal state when the door closer is operated.

FIG. 5 is a plan view of a spacer.

FIG. 6 is a side view of a spacer.

7 is a plan view of the spacer similar to FIG. 5, showing a state in which the spacer is fitted to a large-diameter portion of a bracket shaft and expanded.

[Description of Signs] 1 bracket 2 bracket shaft 3 recess 4 cam plate 5 fork arm 6 outer serration 7 mounting hole 8 inner serration 9 slit 10 upper collar 11 support hole 16 cam plate fixing collar 18 spacer 19 notch 22 locking flange

Claims (2)

[Claims] An outer serration is provided on a part of an outer peripheral surface, a bracket shaft having a locking flange formed at a distal end thereof, and a support hole for fitting the bracket shaft at a base end are opened.
A fork arm having a slit perpendicular to the support hole, a click body built into the base end of the fork arm and urged in the direction of the center axis of the support hole, and a concave portion on the outer periphery engaging with the click body A cam plate having an inner serration which can be engaged with the outer serration at the opening edge of the mounting hole, and a side opposite to the bracket with respect to the fork arm. A cam plate fixing collar fitted to the bracket shaft and having a flange, a notch with an inferior angle at the center, and an annular spacer made of an elastic material, and the cam plate is inserted into the slit of the fork arm. With the bearing holes and the mounting holes aligned, the guide plate and the cam plate fixing collar are slidably guided in the axial direction of the bracket shaft. The distance between the bracket and the locking flange was set so that the spacer could be fitted to the bracket shaft, and the spacer was fitted between the bracket and the fork arm, or one of the cam plate fixing collar and the locking flange. A stop angle adjusting mechanism for a door closer, wherein the inner serration of the cam plate and the outer serration of the bracket shaft are aligned in the axial direction of the bracket shaft. 2. An outer serration is provided on a part of an outer peripheral surface, a bracket shaft having a locking flange formed at a distal end thereof, and a support hole for fitting the bracket shaft at a base end are opened.
A fork arm having a slit perpendicular to the support hole, a click body built into the base end of the fork arm and urged in the direction of the center axis of the support hole, and a concave portion on the outer periphery engaging with the click body And a cam plate having an inner serration which can be engaged with the outer serration at an opening edge of the mounting hole and an opening edge to be fitted with the bracket shaft, and an angle at which the center can be seen is reduced. The cam plate is inserted into the slit of the fork arm, and the bearing hole and the mounting hole are aligned with each other, and these are slid in the axial direction of the bracket shaft. While movably guiding, the distance between the bracket and the locking flange is set so that the spacer can be fitted to the bracket shaft, and the spacer is moved between the bracket and the fork arm, and A stop angle adjusting mechanism for a door closer, wherein the inner serrations of the cam plate and the outer serrations of the bracket shaft are aligned in the axial direction of the bracket shaft when fitted to one of the fork arm and the locking flange. .