JPS6040773Y2 - Door closer stop device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a stop device for a door closer.

Conventional door closer stop devices have drawbacks such as being complex and expensive in structure, and emitting unpleasant noises when the door is stopped, resulting in a large number of complaints.

Therefore, in view of the above-mentioned circumstances, this invention was made for the purpose of eliminating the drawbacks.

Hereinafter, this invention will be described in detail based on specific embodiments shown in the accompanying drawings.

FIG. 1 shows the door in a closed state, and the door 1 is provided on a wall 3 of a room via a hinge 2 so as to be openable and closable.

The door closer 4 is attached to the surface of the door 1 and applies a self-closing force to the door 1, and the base end of a main lever 6 is fixed to the rotating shaft 5 of the door closer 4.

The base end of a link 9 is pivotally attached to a mounting bracket 8 fixed to a door frame 7, and the tip of the main lever 6 and the tip of the link 9 are pivotally attached with a stop plate 10 interposed therebetween.

A radial serration 11 is carved on the bottom surface of the tip of the link 9 in FIG. Serrations 13 are carved, serrations 11 of the link 9 and serrations 13 of the stop plate 10.
The pins 14 are inserted through the tip of the main lever 6, the base of the stop plate 10, and the tip of the link 9, and then tightened with a lock nut 15.

At this time, the opposing outer surface of the insertion portion of the pin 14 through the stop plate 1° is formed into a parallel surface 16, as shown in FIG. The pin 14 fastens the stop plate 10 to the tip of the link 9 with a lock nut 15. On the other hand, the insertion part of the pin 14 for the main lever 6 is loosely fitted, and the main lever 6 is moved around the pin 14 into the door 1.
Rotates according to the opening degree.

The link 9 and the stop plate 10 rotate integrally, and their relative position, that is, the intersecting angle α, can be arbitrarily selected by adjusting their meshing positions.

A sliding hole 17 is bored at a position corresponding to the locking hole 12 of the stop plate 10 of the main lever 6, that is, a position facing the lock hole 12 when the stop plate 10 rotates on the main lever 6. A steel ball 19 biased by a leaf spring 18 is inserted into the sliding hole 17.

In order to prevent the steel ball 19 from pulling out above the main lever 6, the upper periphery of the sliding hole 17 is formed with a slightly smaller diameter as shown in FIG. 6, and the steel ball 19 is press-fitted from below. The completed state is shown in FIG.

Here, if the radius of the steel ball 19 is G, and the distance from the top surface of the main lever 6 to the center of the steel ball 19 fitted into the sliding hole 17 is H, then H/G = about 176 is the stop action. Experiments have shown that this is preferable.

The leaf spring 18 is disposed on the lower surface of the main lever 6 and supports the steel ball 19 fitted into the sliding hole 17 at its tip, and has a protrusion 20 protruding from the upper surface of the base end and a hole 21 recessed in the lower surface of the main lever 6. A bolt 23 is inserted into a long hole 22 drilled in the center of the main lever 6, and then tightened to the main lever 6 with a lock nut 24.

When the urging force of the leaf spring 18 to be applied to the steel ball 19 is to be strengthened, it is tightened at the distal end side, and when it is to be weakened, it is tightened at the proximal end side.

Alternatively, the biasing force can be adjusted by tightening or loosening the lock nuts 24 at each of the three positions.

For this purpose, a long hole 22 is formed in the leaf spring 18, and adjustment holes 25, 26 are formed in the main lever 6.

The operation of the door closer stop device having the above configuration will be described below.

Door 1 is closed in the state shown in Figure 1, but this is indicated by arrow A.
As the main lever 6 and the link 9 open in this direction, the crossing angle β between the main lever 6 and the link 9 gradually increases, and eventually becomes β' as shown in FIG.

This crossing angle β' is equal to the crossing angle α between the link 9 and the stop plate 10 described above, and becomes the opening stop position of the door 1.

This operation sequence will be explained in detail with reference to FIGS. 11, 12, and 13.

The state shown in FIG. 11 changes to the state shown in FIG. 12, and the stop plate 10 approaches the steel ball 19 of the main lever 6, and the slope 27 formed on the lower side of the stop plate 10 comes into contact with the steel ball 19, causing the steel ball 19 to stop. It moves to the right while pushing downward against the biasing force of the spring 18 and applying a deflection δ to the plate spring 18.

Eventually, the stop plate 10 is placed directly above the steel ball 19 in the state shown in FIG.
When the locking hole 17 reaches the steel ball 19, it is urged upward by the restoring force f of the leaf spring 18 and fits into the locking hole 17. At this position, the stop plate 10 is locked on the main lever 6, and the plate The spring force f of the spring 18 is set so that it will not release naturally due to the self-closing force of the door closer body 4, and the intersection angle between the main lever 6 and the link 9 is constrained to β', and the door 1 stops opening. state.

Next, when releasing the door 1, apply a force equal to or greater than the stopping force in the direction of arrow C by inputting the door 1 in FIG. 8, and the operation described in FIGS. 11, 12, and 13 In the reverse order, the steel ball 19 and the stop plate 10 are unlocked, and then the door 1 is closed by the self-closing force of the door closer body 4.

Although the above-mentioned door closer has been explained using the standard mounting method among the mounting methods, the parallel mounting method shown in FIGS. It is.

As mentioned above, this idea pivots the base end of the link to the door frame side, fixes the base end of the main lever to the rotating shaft of the door closer body attached to the door, and pivots the ends of the link and main lever. In door closers, the serrations carved on the upper surface of the proximal end of the stop plate with a locking hole drilled in the protruding end are interlocked with the serrations carved on the lower surface of the end of the link or the lower surface of the mounting bracket on the door frame side. At the same time, a stop plate is fixed to the end of the link or to the mounting bracket, and a steel ball that is urged by a plate spring to protrude from the top surface at a position corresponding to the locking hole of the stop plate of the main lever or link and can be fitted into the locking hole. This is a door closer stopping device that allows the bolt insertion position to be changed using a long hole in the leaf spring and a link or multiple adjustment holes in the main lever.The structure is extremely simple and inexpensive. It is extremely easy to adjust the stopping position and stopping force of the door, and the door does not make any unpleasant noise when the door is stopped, so it has a great practical effect.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a specific embodiment of this invention with the door closed; Fig. 2 is an enlarged plan view of the main parts of Fig. 1;
Figure 3 is a sectional view taken along the line ■-■ in Figure 2, and Figure 4 is the IV in Figure 3.
-IV sectional view, Fig. 5 is a plan view of the leaf spring according to this invention, Figs. 6 and 7 are longitudinal sectional views illustrating how to attach the steel ball according to this invention, and Fig. 8 is an opening of the door. 9 is an enlarged plan view of the main part of FIG. 8, FIG. 10 is a sectional view taken along line XX in FIG. 9, FIG. 11, 12
13 and 13 are longitudinal sectional views taken along the line XX in FIG. 9 to explain the stopped and held state, and FIGS. 14 and 15 are other embodiments of this invention, and FIG. 14 is a state in which the door is closed. FIG. 15 is a plan view showing the door in the open and stopped state;
Figures 16 and 17 are further embodiments of this invention; Figure 16 is a plan view showing the door closed;
The figure is a plan view showing a state in which the door is not opened. 9...Link, 7...Door frame, 6...
...Main lever, 1...Door, 4...
... Door closer body, 5 ... Rotation shaft, 12
...Latching hole, 10... Stop plate, 13.
... Serration, 8 ... Mounting bracket, 1
1... Serrations, 18... Leaf springs, 19... Steel balls.

Claims (1)

[Scope of utility model registration request] In a door closer in which the base end of the link is pivotally attached to the door frame side, the base end of the main lever is fixed to the rotating shaft of the door closer body attached to the door, and the respective tips of the link and the main lever are pivotably attached, Link the stop plate by engaging the serrations carved on the top surface of the base end of the stop plate with a locking hole drilled at the protruding end with the serrations carved on the bottom surface of the end of the link or on the bottom surface of the mounting bracket on the door frame side. A steel ball is fixed to the end or the mounting bracket, is biased by a leaf spring at a position corresponding to the locking hole of the stop plate of the main lever or link, projects upward from the top surface, and can be fitted into the locking hole. A stopping position of a door closer, characterized in that a bolt insertion position can be changed by a long hole provided in a leaf spring and a plurality of adjustment holes provided in a link or a main lever.