JPH08457Y2 - Safety stopper - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety stopper which regulates a sudden opening / closing operation of a door.

[0002]

2. Description of the Related Art In recent years, in industrially manufactured houses, the assembling accuracy is improved, and when the doors (joints), sashes, etc. are completely closed, the room becomes hermetically sealed. Therefore, in a room provided with a plurality of doors, when one door is vigorously closed, or when the outside air suddenly flows in from the entrance, the other door receives the wind pressure and opens, or suddenly. The phenomenon of being closed occurs. Such a phenomenon may lead to an accident such as an infant pinching a finger or the like, which may be dangerous.

Further, there is a door check that doubles as a door stop and brakes the movement of the door when the door is closed. However, it is difficult to adopt in terms of designability and cost. Therefore, without damaging the design,
Moreover, it has been desired to develop a safety device that can be realized at low cost and that does not open and close the door suddenly even when wind pressure acts.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a safety stopper that restricts a sudden opening / closing movement of a door by a braking force when the door tries to move at a certain speed or more. Therefore, the purpose is to improve safety when opening and closing the door.

[0005]

The structure of a safety stopper according to the present invention for achieving the above object is to provide a support shaft provided at a lower portion of a door and extending in the same direction as the front direction of the door, An apex is rotatably supported and the lowermost part is arranged with a slight gap from the floor surface, and the bottom surface including the lowermost part is an arc having a radius from the support shaft to the lowermost part. It becomes an arcuate curved surface with a larger radius, and when it is rotated about the support shaft by a certain rotation angle or more, the bottom surface other than the lowermost part is formed of a substantially triangular plate-shaped braking plate, which is in contact with the floor surface. To do.

[0006]

When the door opens and closes at a predetermined speed or less, a large inertial force does not act on the braking plate, the braking plate does not rotate over a certain rotation angle, and the bottom surface does not contact the floor surface. When the door opens and closes at a predetermined speed or more, a sufficient inertial force acts on the brake plate, the brake plate rotates over a certain rotation angle, the bottom surface contacts the floor surface, and the opening and closing movement of the door is braked by the frictional force with the floor surface. It

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a safety stopper according to the present invention will be described in detail below with reference to the drawings. 1 is a side view showing a safety stopper according to the present invention with a part of a lower end of a door cut out, FIG. 2 is a perspective view showing a safety stopper according to the present invention, and FIG. 3 is a side view showing a safety stopper during braking. Show.

As shown in FIG. 2, a notch groove 5 opening toward the floor surface 3 is formed in the thickness direction of the door 1 on the lower end surface of the door 1 on the opposite side to the hanging base of the door 1 which is not shown. Notched across the front and back. As shown in FIG. 1, a support shaft 7 extending in the same direction as the front direction of the door 1 is provided in the notch groove 5, and the support shaft 7 is moved in parallel in the vertical direction by a mechanism (not shown) so as to be adjusted in position. It has become. A braking plate 9 having a triangular plate shape is rotatably supported on the support shaft 7 such that the apex angle portion 9a is rotatable with the plate surface in the thickness direction of the door 1. The bottom surface 9b of the braking plate 9 is a curved surface that is convex toward the floor surface 3, and the center portion, that is, the lowermost portion p is arranged with a slight gap from the floor surface 3. The bottom surface 9b is an arcuate curved surface having a larger radius than an arc E having a radius R from the support shaft 7 at the center to the lowermost portion p. That is, the brake plate 9
When it is rotated about the support shaft 7, a constant rotation angle θ (see FIG.
From the above, the bottom surface other than the lowermost part p gradually contacts the floor surface 3.

Since the brake plate 9 is rotatably supported by the support shaft 7, when the door 1 moves at a constant speed or more, it rotates due to inertial force. Therefore, the weight of the braking plate 9 is set so that the braking plate 9 rotates only when the door 1 moves at a predetermined speed or higher. The braking plate 9 is preferably made of steel in terms of weight and strength. Further, a non-slip material 11 such as rubber is attached to the bottom surface 9b of the braking plate 9,
The anti-slip material 11 is provided on the floor surface 3 when the braking plate 9 contacts the floor surface 3.
The frictional force between and can be properly secured.

The safety stopper 15 constructed as described above
The operation of will be described.

When the door 1 is opened and closed at a predetermined speed or less, a sufficient inertial force does not act on the braking plate 9, the rotation angle of the braking plate 9 does not become larger than the angle θ, and the bottom surface 9b contacts the floor surface 3. There is nothing to do. When the door 1 is opened and closed at a predetermined speed or more, a sufficient inertial force acts on the braking plate 9, and the rotation angle of the braking plate 9 tends to become larger than the angle θ. When the rotation angle is about to be larger than the angle θ, the bottom surface 9b of the braking plate 9 is the floor surface 3
And the opening / closing movement of the door 1 is braked by the frictional force with the floor surface 3. The braking plate 9 has a larger rotation angle as the inertial force is larger, and the bottom surface 9b is an arcuate curved surface having a larger radius than the arc E. Therefore, the frictional force is increased in proportion to the initial speed of the door 1, and the braking force is reduced. Power increases.

[0012]

As described in detail above, the safety stopper according to the present invention is provided with a support shaft in the front direction of the door, and the bottom surface of this support shaft is larger than an arc having a radius from the support shaft to the lowermost part. Since the brake plate that is an arcuate curved surface with a radius is provided, when the door opens and closes at a predetermined speed or more, the brake plate is rotated by a certain rotation angle or more due to inertial force, the bottom surface contacts the floor surface,
The opening / closing movement of the door can be braked by the frictional force with the floor surface. As a result, even if the door tries to move at a certain speed or more, the braking force acts and the door does not suddenly open and close, so that safety at the time of opening and closing can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a safety stopper according to the present invention with a lower end of a door partially cut away.

FIG. 2 is a perspective view showing a safety stopper according to the present invention.

FIG. 3 is a side view showing a safety stopper according to the present invention during braking.

[Explanation of symbols]

 1 Door 3 Floor surface 7 Support shaft 9 Braking plate 9a Top angle part 9b Bottom surface 15 Safety stopper E Arc having radius from support shaft to bottom part p Bottom part θ Constant rotation angle

Claims (1)

[Scope of utility model registration request] 1. A support shaft provided in the lower part of the door and extending in the same direction as the front direction of the door, and an apex angle portion is rotatably supported by the support shaft, and the lowermost part has a slight gap from the floor surface. In addition, the bottom surface including the lowermost portion is an arcuate curved surface having a radius larger than an arc having a radius from the support shaft to the lowermost portion, and is rotated about the support shaft by a predetermined rotation angle or more. Then, the safety stopper is characterized in that the bottom surface other than the lowermost portion comprises a substantially triangular plate-shaped braking plate that is in contact with the floor surface.