JPH0214621Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door closer opening/stopping limiting device for stopping and holding a door at a desired opening angle.

Conventionally, in the above-mentioned device, on the upper frame of the door mounting frame,
Door closers equipped with a guide groove and an opening stop part for a sliding body pivoted at the end of the arm are Jikosho.
This is disclosed in Japanese Utility Model Publication No. 37-3691 and Japanese Utility Model Publication No. 39-4889, but in the former case, the sliding body is formed as a slider, while the opening stop portion is formed by a pair of bullet plates. Therefore, the deterioration of the bullet plate and the wear of the slider make it difficult to keep the door stopped, and there are problems with durability and restrictions on the predetermined opening angle of the door.
In the latter case, the sliding body is formed as a sliding roller, and the opening stop portion is formed as a recessed portion, so that even a slight vibration of the door will cause the sliding roller to separate from the recessed portion. However, there are disadvantages in that the door cannot be reliably stopped and the angle at which the door stops opening cannot be changed.

Therefore, the present invention was devised in view of the above-mentioned conventional difficulties, and its purpose is to provide an opening/stopping limiting device for door closers that has a simple structure, ensures reliable opening/closing and opening/stopping operations, and has excellent durability. Our goal is to provide the following.

The present invention will be described in detail below based on the illustrated embodiment. As shown in FIG. 1, a door B is pivoted to a rigid frame of a door mounting frame (not shown) by a hinge A so that it can be opened and closed. A door closer D having a door closing function is fixed to the door, and a sliding body 2 is rotatably pivoted by a shaft 8 at the tip of an arm 1 whose base end is fixed to a rotating shaft (not shown). The sliding body 2 is
It is fitted into a long guide groove 6 provided on the upper frame of the door mounting frame so that it can slide freely in conjunction with the opening and closing of the door B, and an opening stop limit is provided inside the long guide groove 6 on the upper frame. The door B is provided with a closing force in the X direction in the drawing by the door closer D, and the door B is provided with a closing force in the X direction in the drawing by the door closer D.
When the opening angle is engaged, the opening angle is stopped and held at the desired opening angle.

Here, the guide long groove 6 may be provided in the upper frame itself, or may be provided by fixing a separate member casing C to the upper frame as shown in the example, but in either case, the guide groove 6 may be provided in the upper frame itself. It is formed into a flat shape.

According to the present invention, the sliding body 2 is the second sliding body 2.
As shown in FIG.
At least the upper end portion thereof has a substantially convex spherical engaging portion 5a.
A stopper 5 formed in the above-mentioned shape is resiliently biased upward by an elastic body 4 and is housed in a vertically movable manner, and an engaging portion 5a is formed to protrude upwardly from an opening 7a of a mounting hole 7.

On the other hand, the opening stop limiting part 3 is located at a position corresponding to the sliding body 2 when the door B is opened at a predetermined opening angle, and has a stopper recess 3b with a downward opening into which the engaging part 5a of the stopper 2 can be engaged. On the front and rear sides thereof, an inclined surface 3c is formed to be inclined in a direction to guide the engaging portion 5a toward the stopper recess 3b, and the sliding body 2 is vertically disposed so as to be able to come into contact with the door B. A seat plate 3a is provided with a restriction portion 3d that can limit the opening of the seat plate 3a, and is fixed within the guide groove 6 so as to be able to change its position in the longitudinal direction.

Here, as shown in FIG. 2, the sliding body 2 has a stopper 5 having a substantially convex spherical engaging portion 5a in the shape of a head at the upper end of the rod-like portion 5b, and the rod-like portion 5b. An elastic body 4 made of a coil spring is mounted on the outside,
Its upper end is supported by the downward step of the engaging part 5a, and its lower end is supported by the bottom wall 7b of the mounting hole 7,
After inserting the lower end of the rod-shaped part 5b into the hole 7c bored in the center of the bottom wall 7b, the diameter of the protruding end is expanded by caulking, etc., so that the rod-like part 5b can be slid in the vertical direction and is attached to the elastic body 4. Therefore, the engaging portion 5a may be formed to protrude from the mounting hole opening 7a by a desired amount as shown in the figure, or the entire stopper 5 may be formed into a spherical shape as shown in FIG. By doing so, the upper part thereof is formed into a convex spherical engaging portion 5a, while the mounting hole 7 is formed in a bottomed shape, and the bottom wall 7b is covered with, for example, a highly elastic metal plate, rubber, etc.
An elastic body 4 made of plastic or the like is placed in an arcuate or hemispherical shape, the stopper 5 is placed on the elastic body 4, and the stopper 5 is placed inside the mounting hole 7, and then the opening of the mounting hole 7 is It is supported by locking pieces 7d protruding from the portion 7a and is movable up and down against the elastic force of the elastic body 4, and the engaging portion 5a is moved from the opening 7a as shown in the figure. It may be formed so that it is held in a protruding state by a desired dimension.

Further, the stopper recess 3b of the seat plate 3a in the open holding part 3 is connected to the engaging part 5 of the stopper 5.
It is preferable to form a substantially spherical concave surface 3e with a curvature corresponding to the surface a. If formed in this way, the stopper 5 can be moved into the stopper recess 3 when the door is closed.
It can be smoothly removed from b.

Furthermore, since the seat plate 3a is fixed to the upper frame or casing C with screws, a plurality of screw holes (not shown) are provided at appropriate intervals in the longitudinal direction of the upper frame or casing C. By selecting this screw hole and fixing the seat plate 3a with screws, the mounting position can be adjusted.

Furthermore, the stopper 5 and the seat plate 3 are made of steel that has been heat treated to have high hardness.

In the above configuration, the door B is attached by the door closer D as shown in FIG.
When the door is opened in the direction shown in FIG. The engaging portion 5a contacts the inclined surface 3c of the seat plate 3a in the portion 3, but since the engaging portion 5a is formed in a substantially convex spherical shape and protrudes upwardly by being resiliently biased by the elastic body 4, the engaging portion 5a contacts the inclined surface 3c of the seat plate 3a. As a result, the contact force acts in a downward direction on the stopper 5, and as a result, the stopper 5 is pushed down against the elastic force of the elastic body 4 and is temporarily recessed into the mounting hole 7, so that the sliding body 2 performs the door opening operation. The above seat plate 3a
When the stopper 5 moves toward the stopper recess 3b side and the engaging part 5a matches the stopper recess 3b, the stopper 5 returns to protrude again, and the engaging part 5a engages with the stopper recess 3b, so that it is not affected by the closing force of the door closer D. In contrast, door B is stopped and held in the open position. Also, at this time, the main body 2a of the sliding body 2 is connected to the limiting portion 3d of the seat plate 3a.
Since the opening of the door B is restricted by coming into contact with the door B, the opening of the door B is restricted. In other words, door B is stopped from opening and restricted from opening.

Then, in order to close the door B that is held stopped, when the door B is pushed in the closing direction, the sliding body 2 is pushed in the direction opposite to the arrow Y direction, so the engaging portion 5a of the stopper 5 has a convex spherical shape. Surface and stopper recess 3b
The stopper 5 is pushed down against the elastic force of the elastic body 4 by sliding with the spherical concave surface 3e.
It sinks into the mounting hole 7 and is disengaged from the stopper recess 3b, and thereafter the sliding body 2 slides in the opposite direction of the arrow by the closing force of the door closer D, and the door B is closed.

As explained above, the door closer opening/stopping restricting device according to the present invention is constructed and operates, so that when the door B is opened at a predetermined angle, the stopper 5 of the sliding body 2 moves against the stopper of the seat plate 3a. At the same time as the sliding body 2 is elastically engaged with the recess 3a, the sliding body 2 is engaged with the seat plate 3a.
Since the door B comes into contact with the restricting portion 3d, it is possible not only to reliably stop and hold the door B at a predetermined opening angle, but also to reliably restrict its opening.

Furthermore, the sliding body 2 has a mounting hole 7 provided in its main body 2a.
A stopper 5 is formed inside through an elastic body 4,
On the other hand, the opening stop limiting portion 3 includes a stopper recess 3b,
The seat plate 3a provided with the inclined surface 3c and the limiting portion 3d can be easily manufactured by fixing it in the guide long groove 6, and the fixing position of the seat plate 3a in the guide long groove 6 can be easily changed. The opening and stopping angle of door B can be changed with extremely easy work,
Furthermore, since the engagement portion 5a of the stopper 5 and the contact surfaces of the seat plate 3a are all spherical or inclined surfaces, the engagement and disengagement operations are smooth and no undue force is applied to each part, making it easy to open and close the door B. It has many practical effects, such as being able to do this smoothly and having excellent durability.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the state of use of the door closer opening/stopping limiting device according to the present invention, and FIGS. 2 and 3 are cross-sectional side views showing embodiments of the door closer opening/stopping limiting device according to the present invention. . B...Door, D...Door closer, 1...Arm, 2...Sliding body, 2a...Sliding body, 3...
...Opening stop limiting part, 3a... Seat plate, 3b... Stopper recess, 3c... Inclined surface, 3d... Opening limiting part, 4... Elastic body, 5... Stopper, 5a...
Engaging portion, 6... Guide long groove, 7... Mounting hole.

Claims (1)

[Scope of utility model registration request] The upper frame of the door mounting frame is provided with a long guide groove 6 and an opening stop restriction portion 3 for a sliding body 2 pivotally mounted at the tip of an arm 1 of a door closer D, and the sliding body has at least an upper end portion formed into a substantially convex spherical surface. shaped engaging portion 5
The stopper 5 provided in the main body 2a is formed inside the mounting hole 7 of the main body 2a by being elastically biased to protrude from the opening by the elastic body 4, while the opening stop limiting portion is located within the guide long groove and formed as desired. A stopper recess 3 into which the stopper engaging portion is engaged at the door opening angle.
b, which are located on both front and rear sides, and are provided with an inclined surface 3c for guiding the engaging portion to the stopper recess, and an opening limiting portion 3d for locking the sliding body, so that the seat plate 3a can be repositioned. An opening/stopping device for a door closer, characterized in that it is formed by being attached.