JPS587075A - Door opening and closing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This JI! The beak relates to a door opening/closing device that includes a support metal fitting, a screw shaft, a receiving metal fitting, an operating member, and an electric motor, and is capable of automatically opening and closing a door-like door.

Conventionally, an opening/closing buffer device called a so-called door checker has been used for swinging doors. However, when such a door checker is used on a door facing outdoors,
In the event of gusts or strong winds, sufficient resistance and buffering force may not be provided and the door may close suddenly, creating the risk of hands and feet being caught in the layer. In addition, doors using such door checkers must be opened by hand/pull, so they cannot be opened in public places used by unspecified people, or in hospital rooms, kitchens, washrooms, etc. When such a door is used, the knob is likely to become contaminated, which is unsanitary. As a solution to part of this problem, for example, Utility Model Publication No. 61-52210 or Utility Model Publication No. 49-9
A door opening/closing device shown in Japanese Patent No. 689 has been proposed. However, since the former uses a rack and a pinion, its operation tends to be uneven, and the rack is fixed and protrudes at an angle into the room, making the device bulky. The latter is configured so that the output shaft of the reversible motor directly drives the connecting rod attached to the door through an arm71, so that even when the door is closed, the arm protrudes into the room, spoiling the aesthetics, and causing damage during the initial stage of operation. There are drawbacks such as the need for large rotational force.

Book Jl! The purpose of this invention is to provide a door opening/closing device that can solve these problems and has a simple structure, and one embodiment thereof will be described below with reference to the drawings.

Figures 1 and 2 show a basic embodiment of the zero-start system.

As shown in the figure, the door opening/closing device (hereinafter referred to as the device) (1) consists of a support fitting (2) fixed to the lintel (lintel part) and a screw shaft (3).
), a receiving metal fitting (4) for holding the screw shaft (3), an actuating member (6) comprising a nut fitting (2), and an electric motor (7).

In this embodiment, the support fitting (2) is fixed to the lintel part (a) at a position slightly apart from the hinge part c) of the door (b). The supporting metal fitting (2) has a support piece (b) placed upright on the board αQ fixed to the lintel part (a), facing the front of the lintel part (a), and its tip is attached to the hinge part (C ) is bent towards. The screw shaft (3) has one end rotatably attached to the bracket (4) K, and when the door (b) is closed, extends in the opposite direction to the hinged portion (C) and has a square screw. is engraved along the entire length, except for the pivot point.

The receiving fitting (4) protrudes oppositely from rotating arms (2) (2) extending toward the supporting fitting (2)K on the side of the pivoting part of the screw shaft (3), and the supporting fitting (2) extends between the rotating arms 0Ja1. The support pieces (B) located above the member (2) are interposed and pivotally fixed to each other at their tips, so that the screw shaft (3) and the pivot point of the actuating member (6) are eccentric. Separate the distance ■. The upper rotating arm is formed in a rectangular shape, and a motorized flap (7) is mounted on the rotating arm (2).
However, the output shaft Q4 is attached to the rear end, and a belt consisting of a pulley 0 and a belt (to) is attached to the output shaft A4 and the end protruding from the receiving fitting (4) of the screw shaft (3), respectively. A transmission device is provided to connect the two. In this embodiment, the actuating member (6) is composed of a fastener (to) fixed to the door (b) and the nut (5) which is pivotably supported at the tip thereof so that it can be rotated in a horizontal plane. The fastener O1e is fixed to the front surface of the door (b) by its bent member, and when the door (cough) is closed, the screw shaft (3) is held almost parallel to the door (b) and held in the hanging position. Install the nut fitting (5).

However, in the zero threat device (1), the electric motor (7) is driven to screw the screw shaft (3) back from the nut fitting (5), and the gap between the nut fitting (5) and the receiving fitting (4) is removed. extend the distance.

At that time, the receiving bracket (4) receives a rearward reaction force, and the rotational moment due to the reaction force and the eccentric distance (1) rotates.
'By acting on the arm (2), the screw shaft (3) is rotated around the pivot point of the rotating arm @, and as a result, the screw shaft (
3) through the nut fitting (Ss) screwed onto the actuating member (6).
) can be rotated in the same direction to open the door (b) to an opening angle of approximately 9G'' as shown by the dashed line. Figure 2 shows the inclination angle of the screw shaft (3) between them. is CiO~d90, and the rotation angle of door (b) is β0~β9
0. The numbers O~90 at the end refer to the door (b).
) indicates the opening angle of the screw shaft (3) at the initial stage of opening.
It can be seen that the inclination of the door (b) is larger, so that the door (b) can be opened smoothly. Note that by reversing the electric motor (7), the door (b) can be closed through a similar route. Electric motor(
As 7), a reversible electric motor can be used, and if necessary, a speed reduction device can be incorporated into the electric motor (7), and the impact at the time of opening and closing can be alleviated. Fig. 3 shows another example of the screw shaft (3), in which the screw shaft (3) has a 411 shaft (3 hatake) which is pivotally supported by the bracket (4) and the w4 rotation shaft (j
It consists of a threaded cylinder (8b) which is inserted externally and has a threaded part carved into its periphery to be screwed into the nut fitting (5). Screw tube (
8b) has a flange (b) between the receiving metal fitting (4) and the nut metal fitting (5), and the flange (2) has a spring that biases the screw shaft (8a) before and after the flange (b). In addition to being movable, the shaft (8a) and the threaded cylinder (8b) are always engaged with each other at the deep notch (2) provided at the base of the groove (in the groove), and therefore, under normal conditions, the rotating shaft (8a) and the threaded cylinder (8b) rotate as one body. As in the case of the embodiment shown in the figure, the door (b) can be opened and closed, and in the event of an emergency such as a fire, when the door (bum) is strongly pulled, the ball (2) will open at the notch.
The door (b) can be opened without rotating the rotating shaft (8a) as shown by the dashed line in FIG. 8. After opening, by reversing the electric motor, the screw I (Bb) engages with the nut (5) K and retreats, and the ball (ball) can automatically return to the notch (2). Figure 4 is...
Another example of the nut fitting (5) is shown in which, instead of the internal thread, a ball is attached which is biased by a spring in accordance with the thread groove arrangement of the screw shaft (3). Even in this example, in the case of Am, by pulling the door, the ball ■ climbs over the screw thread of the screw shaft (3) while moving the ball up and down, thereby operating the electric motor (7). The door (
− can be opened.

5 to 7 show still other embodiments of the present invention.

In this embodiment, the actuating member (6) has a protrusion formed integrally with the support fitting (2) and on the hinged portion (C) side thereof, and is pivoted by the protrusion and has a long hole at the tip. lever (2)
and a pin slot to be inserted into the slot () and the door (
b) A leg fitting (6) to which K is fixed, and the nut fitting (6) is attached to the forward protruding part of the lintel part (a) of lever 4.
5) is rotatably supported. , the screw shaft (3) is the seventh
As shown in the figure, the case (2) attached to the rotating arm @
It is attached to the motor (7) so that it can rotate through a bearing (2) and cannot move back and forth, and is directly connected to the output shaft α◆ of the electric motor (7) through a joint (to). The nut fitting (5) is bolted using the leg member (2) K collar (toward).
and its opposing wall tlt)
(6a)
Install. The oak) (5i) uses a pin fixed to the wall (2) (1) to prevent rotation, and the wall @
(b) A contact piece is inserted between the nuts (5a) and a contact piece for connecting and separating the switch (2) is attached to the lower surface of the nut (5a). Therefore, in this embodiment, the rotation moment acting on the rotating arm due to the rotation of the electric motor (7) rotates the lever of the actuating member (6) and opens the door (b) via the leg fitting (to). The door (b) can be opened and closed by reversing the electric motor (7). Also, when opening and closing the door (b)
When the switch (b) is restrained, the nut (5a) moves against the spring and the contact piece separates from the switch (b), immediately stopping its opening and closing. Note that when the restraint is removed, the opening/closing operation can be continued.

Figures 8 and 9 show other embodiments of the book 4t1. In this embodiment, the support metal fitting (2) is fixed to the upper end of the door (bl), and the iron door (b) can be opened outward. Also, the screw shaft (3) is placed oppositely on the rotating arm (2). It is keyed to a retaining ring which is loosely inserted into the support pin (to) between the walls gI) and v) so as to be movable back and forth, and is attached so as to be non-rotatable and movable back and forth.

A spring (A) is interposed between the retaining ring (B) and the wall (B), and a contact piece is provided at the lower end of the retaining ring (2) so that it can be brought into contact with and separated from the switch (2). The electric motor (7) is integrally formed with the nut fitting (5). The electric motor (7) has its rotor θ rotatably mounted directly on the frame through a bearing, and the screw shaft (3) is formed using a ball screw, and its nut (6a) is directly fixed to the inner surface of the rotor. be done. Therefore, when the electric motor (7) is ONL and the rotor is rotated, the nut (6a) can advance and retreat on the screw shaft (3), and the door (b) can be moved in the same way.
A vine that opens and closes.

As a gift, this m@ device consists of a supporting metal fitting, a screw shaft,
The door can be opened and closed by a rotational moment acting on the rotating arm by protruding a rotating arm from the receiving bracket, and thus making the screw shaft parallel to the door when the door is closed. In addition to being easy to hold and allowing for a snug installation with minimal protrusions, the door can be opened and closed by pressing the switch that activates the electric motor, reducing contact between the door and hands, making it ideal for kitchens and washrooms. Furthermore, it is possible to eliminate the use of knobs, which usually tend to be unsanitary, such as on hospital room doors. In addition, it is opened and closed using a screw shaft and a nut fitting that is screwed onto the screw shaft, so the screw connection is secure and safety is ensured by preventing sudden opening and closing even when gusts of wind etc. act during opening and closing. It has excellent effects such as being able to secure In addition, when the motor can be stopped by a switch that operates according to the load as in the embodiments shown in Figs. In addition to being preventable,
At the time of closing, each of the springs can be kept in a compressed state, and by utilizing the counter-throw force of the spring, it is also possible to reduce the initial opening torque of the electric motor. Furthermore, as an opening/closing device in an emergency, the rotating shaft and threaded cylinder shown in FIG. 8, for example, can be fixed using a bottle that can be easily pulled out by hand.

[Brief explanation of the drawing]

Figure 11 is a perspective view showing an example of this suction, Figure 2 is a diagram showing its action, Figure 8 is a perspective view showing another example of a screw shaft, and Figure 4 is a perspective view of another example of a nut fitting. FIG. 5 is a plan view showing another embodiment, FIG. 6 is a perspective view thereof, and FIG. 7 is a perspective view showing an example.
The figure is a sectional view of the main part, FIG. 8 is a perspective view showing still another embodiment, and FIG. 9 is a sectional view of the main part. (2)...Supporting metal fittings, (3)...Screw shaft, (4)...
...Bracket, (5)...Nut fitting, (6)...Operating member, (7)...Electric motor, @...Rotating arm, (a)
...Kamoi part, (b) ...door. Special and fraudulent applicant: Katsura Akashi - Agent: Tadashi Naemura, patent attorney

Claims (1)

[Claims] (1) A door opening/closing device for opening and closing an M-shaped door, which includes a support fitting fixed to the lintel part or the door, a screw shaft,
A receiver ^ which holds one end of the screw shaft and extends toward the support metal fitting from the side of the screw shaft, and whose tip is pivotally connected to the support metal L&, is screwed onto the screw shaft. A door opening/closing device comprising: an actuating member that is provided with a nut fitting that can be swung and is connected to a door or a lintel; and an electric motor that can relatively rotate the nut fitting and a screw shaft.