JPH057885U - Door opening / closing mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize a door opening / closing mechanism that can be opened without using hands, at a lower cost than electric automatic doors. [Structure] A biasing means for biasing the door 5 to an open state is provided on the door 5, a cylindrical door stopper 3 having a door stopper surface 7 is rotatably provided on the opening, and a spiral groove 13a is formed on the outer periphery. The formed engagement shaft 13 is formed at the lower end of the door stop 3 and is moved up and down by the pressing means, and the projection that engages with the spiral groove 13a is formed.
An engaging arm 21 for rotating is provided on the floor, and a magnet 11 having an attraction force larger than the urging force of the urging means is provided between the door 5 and the door contact surface 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door opening / closing mechanism that can be opened without using a hand.

[0002]

[Background technology]

 Conventional doors are provided with an empty space (so-called “punch”) between them and a door frame, which is opened by a puller or a lock case is provided on the door, and the closed state is maintained by a latch bolt. , Some of them are opened by releasing the holding by rotating the knob. All of these doors must be pulled by hand or operated by operating knobs to open and close, which is troublesome to open and close, and is inconvenient when the hands cannot be used. Therefore, if it is desired to omit the opening / closing operation of the door, a limit switch or an automatic door that controls the opening / closing of the door by an infrared sensor is used. However, the structure of the automatic door becomes complicated, and the construction cost and the maintenance cost are extremely high. Also, there are swing doors that can be opened and closed by touching the body without using hands or by hitting an object such as a dolly, but they were similar in terms of lack of airtightness and troublesome opening and closing.

[0003] Thus, there is a demand for the development of a door opening / closing mechanism that can be opened without using a hand, especially in the case of an internal door, and does not increase the construction cost and the maintenance cost.

[0004]

[The purpose of the device]

 The present invention has been made in view of the above circumstances, and provides a door opening / closing mechanism that can be opened without using a hand, at a cost much lower than that of an automatic door, thereby improving comfortability. The purpose is to

[0005]

[Means for Solving the Problems]

 To achieve the above object, the structure of the door opening / closing mechanism according to the present invention comprises a door, a biasing means for biasing the door to an open state, and upper and lower ends which are provided along the vertical frame of the opening. A cylindrical door stop that is freely supported, a door contact surface that is formed over the upper and lower ends of the door contact and that is the contact surface when the door is closed, and the center of the door contact at the lower end of the door contact. The engaging shaft with a spiral groove formed on the outer periphery and the engaging shaft provided on the floor in the vicinity of the engaging shaft and moved up and down by a pushing step, and with the projections engaging with the spiral groove formed. It is characterized by comprising an engaging arm for rotating the door stop through the magnet, and a magnet provided across the door and the door stop surface and having a larger attractive force than the urging force of the urging means.

[0006]

[Action]

 Normally, the door is attracted to the door stop surface by a magnet and held in a state of contacting the door stop. When the door is opened, the engaging arm is pushed down by the pressing means, the protrusion descends in the spiral groove, and the door stop rotates through the engaging shaft. When the door stop is rotated, the door is pushed out to the door contact surface, the holding state on the door contact surface is released, and the door is opened in the opening direction by the urging force of the urging means.

[0007]

【Example】

 Hereinafter, a preferred embodiment of a door opening / closing mechanism according to the present invention will be described in detail with reference to the drawings. 1 is a front view showing a main part of a door opening / closing mechanism according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

In the vicinity of the vertical frame 1 of the opening frame, a cylindrical door stop 3 is erected upright along the vertical frame 1, and the door contact 3 is rotatable about an axis in the vertical direction. A part of the door stop 3 is cut out along the upper and lower ends in the axial direction, and a pair of cut surfaces orthogonal to each other are formed by the cutouts. One of the pair of cutout surfaces is a door-contact surface 7 that abuts when the door 5 is closed. An attraction plate 9 is attached to the door contact surface 7, and a magnet 11 attached to the door 5 is attracted to the attraction plate 9. In other words, the door 5 normally holds the state in which the magnet 11 is attracted to the attraction plate 9 and is in contact with the door contact surface 7 of the door contact 3.

By the way, the door 5 is designed so that an urging means (not shown) exerts an urging force in the opening direction on the hanging base side. This urging force is adjusted so as to be smaller than the attraction force between the attraction plate 9 and the magnet 11 described above. That is, the door 5 is held by the door contact surface 7 when the attraction plate 9 and the magnet 11 are attracted to each other, and when the magnet 11 is separated from the attraction plate 9, the door 5 is opened by its own force. There is.

On the other hand, an engaging shaft 13 is projected at the lower end of the floor of the door stop 3 with the same central axis as the door stop 3, and a spiral groove 13 a is formed around the central axis on the outer periphery of the engaging shaft 13. ing. In the floor near the engaging shaft 13, a pedal 15 that is a pushing means that is vertically moved is installed, and the pedal 15 is urged by a spring 17 so that the upper step plate 19 is normally on the floor surface. It is in a state of protruding from. An engaging arm 21 is provided on a side surface of the pedal 15, and the engaging arm 21 is engaged with the spiral groove 13a of the engaging shaft 13 via a protrusion (not shown). Therefore, when the step board 19 is stepped on, the engaging arm 21 is pushed downward, and the protrusion moves downward in the spiral groove 13a, whereby the door stop 3 is rotated.

The operation of the door opening / closing mechanism configured as described above will be described with reference to FIGS. 3 to 5. Figure 3 is a plan view near the door stop showing the door closed, Figure 4 is a plan view near the door stop showing the state immediately after the door is opened, and Figure 5 shows the door stop in its original position. The top view showing the returned state is shown.

The door 5 is normally held in a state in which the magnet 11 is attracted to the attraction plate 9 and is in contact with the door contact surface 7 (see FIG. 3). When the step plate 19 is stepped on when the door 5 is opened, the pedal 15 is lowered against the inactive force of the spring 17, and at the same time, the engaging arm 21 is pushed downward, so that the engaging arm 21 moves downward. .. When the engagement arm 21 moves downward, the protrusion slides in the spiral groove 13 a, and the door stop 3 is rotated via the engagement shaft 13. When the door stop 3 is rotated, the door 5 is pushed in the rotation direction by the door contact surface 7 (see FIG. 4), and the door 5 released from the holding state on the door contact surface 7 is opened by the urging means. It opens and is held open. The depressed pedal 15 returns to its original position again by the reaction force of the spring 17, the door stop 3 is reversely rotated via the engaging arm 21, and the door contact surface 7 again holds the door 5 by suction. (See Figure 5). When the door 5 is closed, the door 5 is brought into contact with the door stop 3 and the magnet 11 is attracted to the suction plate 9, so that the door 5 is held again in the state of coming into contact with the door stop surface 7. ..

In the above-described embodiment, the pedal 15 is used as the pressing means for lowering the engaging arm 21, and the door stop 3 is rotated by stepping on it with the foot. However, other pressing means include, for example, A part of the floor in front of the opening is provided so that it can move up and down, and by connecting the engaging arm 21 to this movable floor, the engaging arm 21 is lowered by the weight only when a person stands, and the door stop 3 rotates. Various things are considered.

[0014]

[Effect of the device]

 As described above in detail, according to the door opening / closing mechanism of the present invention, the door is urged in the open state, and the cylindrical door stop having the door contact surface is rotatably installed in the opening. Since a magnet is provided between the door and the door stop surface, when the door is opened, the door stop is rotated by the pressing means, so that the door is pushed out to the door contact surface, and the door contact surface. Is released by the biasing force. As a result, even if the user's hands are full, the door can be opened by the treading force of the foot, etc., and the habitability can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a door opening / closing mechanism according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan view of the vicinity of a door stop showing a state in which the door is closed.

FIG. 4 is a plan view of the vicinity of a door stop showing a state immediately after the door is opened.

FIG. 5 is a plan view showing a state where the door stop has returned to the original position.

[Explanation of symbols]

1 Vertical Frame 3 Door Stop 5 Door 7 Door Stop Surface 11 Magnet 13 Engaging Shaft 13a Spiral Groove 15 Pedal (Pushing Means) 21 Engaging Arm

Claims (1)

[Claims for utility model registration] [Claim 1] A door, a biasing means for biasing the door to an open state, and a circle having upper and lower ends rotatably supported along the vertical frame of the opening. A columnar door stop, a door contact surface that is formed over the upper and lower ends of the door contact and serves as an abutting surface when the door is closed, and is formed at the lower end of the door contact with the same center as the door contact. The engaging shaft having a spiral groove formed on the outer periphery thereof and the engaging shaft formed on the floor near the engaging shaft and moved up and down by a pressing means, and the projection engaging with the spiral groove are formed. A door comprising: an engagement arm that rotates the door stop through a magnet; and a magnet that is provided over the door and the door stop surface and that has a larger attraction force than the urging force of the urging means. Opening and closing mechanism.