JPH057882U - Safety stopper - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the safety when opening and closing the door by providing a braking plate that generates a braking force due to inertial force when the door tries to move at a certain speed or more. [Structure] Support shaft 7 extending in the same direction as the front direction of door 1.
Is provided at the lower part of the door 1, and the triangular braking plate 9 is at the bottom p.
Is supported with a support shaft 7 rotatably so that it is arranged with a slight gap from the floor surface 3, and the bottom p
The bottom surface 9b of this braking plate including is formed by an arcuate curved surface having a radius larger than the arc E having a radius from the support shaft 7 to the lowermost portion p.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety stopper that restricts a sudden opening / closing operation of a door.

[0002]

[Background technology]

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

[0003] Although a door check function is used as a door stop to stop the movement of the door when the door is closed, it may be difficult to use in terms of designability and cost increase. Therefore, it has been desired to develop a safety device that can be realized at a low cost without damaging the design and that does not cause the door to open and close suddenly even when wind pressure is applied.

[0004]

[The purpose of the device]

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

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the safety stopper according to the present invention has a structure in which a support shaft is provided at a lower portion of a door and extends in the same direction as a frontal direction of the door, and a vertical angle portion is rotatably supported by the support shaft. The lowermost part is arranged with a slight gap from the floor surface, and the bottom face including the lowermost part is an arcuate curved surface with a radius larger than the arc having the radius from the support shaft to the lowermost part. The bottom surface, other than the lowermost part, is composed of a substantially triangular plate-shaped braking plate that is in contact with the floor surface when rotated about the support shaft by a predetermined rotation angle or more.

[0006]

[Action]

 If the door opens and closes below the specified speed, a large inertial force does not act on the brake plate, the brake plate does not rotate more than 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, 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. To be done.

[0007]

【Example】

 Hereinafter, a preferred embodiment of a safety stopper according to the present invention will be described in detail with reference to the drawings. FIG. 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 away, 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 (not shown) of the door 1. It is cut across the front and back. As shown in FIG. 1, a support shaft 7 extending in the same direction as the frontage 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) to be adjusted in position. It is like this. A triangular plate-shaped braking plate 9 is rotatably supported on the support shaft 7 with its plate surface in the thickness direction of the door 1 and its apex angle portion 9a. The bottom surface 9b of the braking plate 9 is a curved surface that is convex toward the floor surface 3, and the central 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 central support shaft 7 to the lowermost portion p. That is, when the braking plate 9 is rotated about the support shaft 7, the bottom surface other than the lowermost part p gradually contacts the floor surface 3 from a constant rotation angle θ (see FIG. 3) or more. Of.

Since the brake plate 9 is rotatably supported by the support shaft 7, when the door 1 moves at a constant speed or higher, it rotates due to inertial force. Therefore, the weight of the brake plate 9 is set so that the brake plate 9 rotates only when the door 1 moves at a speed higher than a predetermined speed. The braking plate 9 is preferably made of steel in terms of weight and strength. Further, an anti-slip material 11 such as rubber is attached to the bottom surface 9b of the braking plate 9, and the anti-slip material 11 appropriately secures a friction force with the floor surface 3 when the braking plate 9 contacts the floor surface 3. It has become possible.

The operation of the safety stopper 15 thus configured 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 damping plate 9 does not become larger than the angle θ, and the bottom surface 9b is placed on the floor surface 3. There is no contact. When the door 1 is opened and closed at a predetermined speed or more, a sufficient inertial force acts on the brake plate 9, and the rotation angle of the brake plate 9 tends to become larger than the angle θ. When the rotation angle is about to become larger than the angle θ, the bottom surface 9b of the braking plate 9 contacts the floor surface 3, and the friction force with the floor surface 3 brakes the opening / closing movement of the door 1. The braking plate 9 has a larger rotation angle as the inertial force becomes larger, and the bottom surface 9b has an arcuate curved surface having a larger radius than the arc E. Therefore, the frictional force increases in proportion to the initial speed of the door 1, The braking force increases.

[0012]

[Effect of the device]

 As described in detail above, the safety stopper according to the present invention is provided with the support shaft in the front direction of the door, and the bottom surface of the support shaft has an arc-shaped curved surface with a radius larger than the arc having the radius from the support shaft to the lowermost part. Since a braking plate is provided, when the door opens and closes at a predetermined speed or more, the braking plate is rotated by a certain rotation angle due to inertial force, the bottom surface contacts the floor surface, and the door opens and closes due to the frictional force with the floor surface. Motion can be braked. As a result, even if the door tries to move at a certain speed or higher, the braking force acts and the door does not suddenly open and close, so the 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 7 Support Shaft 9 Braking Plate 9a Top Corner 9b Bottom 15 Safety Stopper E Radius of Radius from Support Shaft to Bottom Part p Bottom Part θ Constant Rotation Angle

Claims (1)

[Claims for utility model registration] Claims: 1. A support shaft provided in the lower portion of the door and extending in the same direction as the front direction of the door; It is arranged with a slight gap from the floor surface, and 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, A safety stopper characterized in that the bottom surface other than the lowermost portion comprises a substantially triangular plate-shaped braking plate that contacts the floor surface when rotated about a certain rotation angle about the center.