JPH0730648B2 - Door fixing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door fixing device which is used by being attached to doors, doors, etc. of various facilities such as general houses and companies, and which can fix the doors in all fully opened and half opened states.

[0002]

2. Description of the Related Art Generally, conventional doors stop when they are completely open or closed, and it is difficult to stop when they are in the middle or half-open position. If you try to fix it at any position, for example, sandwich a wedge piece under the door,
It is known that a door is provided with a fixture that is operated by a foot so as to project downward and presses the floor surface by a spring bias.

[0003]

By the way, in the above-mentioned conventional door fixing device for maintaining the half-opened state,
In the case of sandwiching wedges under the door, it was complicated because the user had to sit down and set each time. Also,
It was difficult to fix the door securely because the wedge pieces came off. In other words, even if the wedge piece was set on the floor, it gradually became loose and the door closed. Further, there is a defect that the floor surface and the carpet are damaged by the wedge pieces. On the other hand, in the case where the floor pressing piece is operated by the foot and spring-biased, it can be fixed in the closing direction, but since it was fixed against the closing direction force of the door closer, it was not fixed in the opening direction. It was impossible to secure the door securely because it would open without opening. Also, a door closer was required.
Further, if the distance between the lower end of the door and the floor surface is large, the floor push rod may not be usable due to insufficient length. Also, the floor surface was sometimes damaged.

The object of the present invention was made in view of the above-mentioned drawbacks of the prior art. The door fixing device can fix the door at an arbitrary opening position, is easy to operate, and does not damage the floor surface. To provide.

[0005]

A door fixing device according to the present invention is provided at an upper portion of a door and has an arm rotatably supported at one end by a door frame, and rotatably at the other end of the arm. A moving plate that is axially supported and has an engaging portion, a guide portion that guides the movement of the moving plate and that is provided at an upper portion of the door, and an engaging portion of the moving plate that is disposed along the guide portion. The braking mechanism includes an engaging portion that engages and disengages, a drive mechanism that vertically moves the braking member to an engagement position and a disengagement position, and an operating rod that drives the drive mechanism. ,
A rotation link that rotates about a fixed shaft and that includes a first action arm and a second action arm, and a connection in which one end is connected to the detection member and the other end is connected to the first action arm and the operating rod. A link and a slide plate that vertically moves the braking member in an up-down direction by an inclined groove. A pin erected on the second working arm is loosely fitted in an elongated hole of the slide plate, and the detection member is The door is fixed by moving the slide plate via the pivot link by operating the operating rod only when the door can be freely projected. Further, a roller that is slightly larger than the width of the engagement concave and convex is rotatably arranged on the moving plate. Further, the detection member is for detecting the opening and closing of the door,
It is arranged at the free end of the door so that it can be retracted.

[0006]

As described above, according to the door fixing device of the present invention, the door can be fixed at any position. Also,
Does not hurt the floor. Furthermore, it can be operated very easily with the thumb turn and knob.

[0007]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a use state of a door fixing device according to the present invention, and FIG. 2 is a partially omitted front view showing an overall configuration of a door fixing device according to an embodiment of the present invention. The door fixing device is arranged above the door 1.

An arm member 23 of a predetermined length which constitutes this door fixing device is rotatably attached to a door frame 27 through a shaft 26 at one end thereof, and a movable plate 24 is provided at the other end thereof with a shaft 28.
And is rotatably attached via a circular nut 28a. The lower surface of the moving plate 24 has an engaging portion, that is, an uneven surface 24.
a is provided, and a plurality of rollers 24b for smooth sliding are provided on both side surfaces of the pin 33 and the nut 34.
Is rotatably provided (see FIG. 5).

The moving plate 24 is fitted and guided in a guide portion provided in the upper portion of the door 1 along the longitudinal direction, that is, a concave groove 29, and slightly inward at the upper edge of the concave groove 29. A guide rail portion 29a is formed so as to project to the inside, and the moving plate 24 is provided inside the guide rail portion 29a.
Is arranged so as not to come out of the upper part, and the roller 24b comes into contact with the inner surface of the concave groove 29 and rolls so that the moving plate 24 can freely move along the concave groove 29. Has become.

A braking member 22 of the moving plate 24 is arranged in the groove 29, which is the guide portion, along the longitudinal direction thereof, and the braking member 22 engages with the uneven surface of the moving plate 24. The joint portion, that is, the uneven surface 21 having the same shape is provided over the entire length. The braking member 22 is configured so that it can be arbitrarily moved to a position where it engages with the moving plate 24 and a position where it disengages by operating the operating rod 12 by an appropriate drive mechanism 10.

As an example of the drive mechanism 10, as shown in FIG. 2, a rotary link 11 having a substantially triangular shape,
It is composed of a connecting link 13, a detecting member 18 connected to one end of the connecting link, and a slide plate 17.

The turning link 11 has one corner rotatably fixed by a fixed shaft 14 and the other corner first.
The working arm 11a of the
Of the operating rod 12 and the other end of the connecting link 13 are connected to the first operating arm 11a by a pin 15.

A pin 16 is attached to the second working arm 11b in a planted state, and the pin 16 is engaged with a long hole 17a provided in the slide plate 17 in a loosely fitted state.
Is disposed in the chamber 30 and is supported so as to be movable in the arrow B direction.

The operating rod 12 is interlocked with a thumb turn (not shown) provided on the door or a door gripping tool, and can be pushed up in the direction of arrow A by operating these.
The tip of the operating rod 12 and the rear end of the connecting link 13 are pin-coupled to the pin 15 implanted in the first acting arm 11a of the rotating link 11.

The detecting member 18 is slidably housed in a housing portion 19 provided in the mechanism body, and its rear end is pin-connected by a connecting link 13. Further, the spring 25 urges the door from the end face in the storing direction. The slide plate 17 is movably supported in the lateral direction by a pin 31 on the apparatus main body side inserted into the supporting elongated hole 17c (see FIGS. 2 and 4). In addition, the action pin 17b is erected at an appropriate position, and the inclined groove 20 of the braking member 22 that is arranged oppositely is provided.
Is engaged with.

The operation of the door fixing device constructed as above will be described. First, when the door is opened and fixed at a predetermined opening, the operating rod 12 is pushed up. When the operating rod 12 rises in the arrow A direction, the rotary link 11 rotates in the arrow R direction. Then, as shown in FIG. 7, the detection member 18 projects from the door end surface via the connecting link 13.

Further, when the operating rod 12 is pushed up, the pin 16 of the rotary link 11 comes into contact with the end of the elongated hole 17a and moves the slide plate 17 laterally (direction B) as shown in FIG.
At this time, the detection member 18 retreats from the door end surface again.
When the slide plate 17 is driven by the rotation link 11 in the direction of arrow B, the braking member 22 rises via the action pin 17b and the inclined groove 20. When the braking member 22 rises, the engagement unevenness 21 on the upper surface engages with the engagement unevenness 24a of the moving plate 24 arranged to face the moving plate 24, thereby fixing the moving plate 24.

The movable plate 24 includes an arm member 23 and a door frame 2.
The door is fixed in that position because it is pin-connected to 7. When releasing the door fixation, the operation rod 12 is lowered to reverse the above operation, the engagement of the moving plate 24 is released, and the door can be freely opened and closed. The moving plate 24 can be smoothly moved in the concave groove 29 which is a guide portion of the mechanism main body by the roller 24b.

Next, when the operating rod 12 is operated with the door closed, the detecting member 18 cannot be projected from the end face of the door because it is blocked by the door frame as shown in FIG. Then, the rotation link 11 cannot be further rotated, and the fixing operation cannot be performed. Thus, the door fixing mechanism of the present invention can fix the door at any position. Further, when the door is closed, the fixing device does not operate due to the action of the detection member 18 and does not interfere with the locking and unlocking mechanism. Although the drive mechanism of the operating rod 12 is omitted in the above embodiments, it can be driven by using a thumb turn, a lever handle or the like. In other words, when operating with the thumb turn (inner knob), since the fixing can be released only from the inside of the door, a door open / close confirmation mechanism is necessary. Further, when operating with a handle such as a lever, since the fixing can be released from inside and outside of the door, a door opening / closing confirmation mechanism is not necessary. Furthermore, another mechanism may be provided.

[0020]

As described in detail above, the door fixing device is provided at the upper part of the door and has one end rotatably supported by the door frame and the other end of the arm rotatably supported by the arm. A moving plate that is supported and has an engaging portion, a guide portion that guides the movement of the moving plate and that is provided on an upper portion of the door, and an engaging portion of the moving plate that is disposed along the guide portion. The braking mechanism includes an engaging portion that engages and disengages, a drive mechanism that vertically moves the braking member to an engagement position and a disengagement position, and an operating rod that drives the drive mechanism. A rotation link that rotates about a fixed shaft and that includes a first action arm and a second action arm, and a connection in which one end is connected to the detection member and the other end is connected to the first action arm and the operating rod. A link and a slide plate that vertically moves the braking member in an up and down direction with an inclined groove, The slide plate is moved through the rotation link by loosely fitting the pin standing on the working arm of No. 2 into the elongated hole of the slide plate and operating the operating rod only when the detection member can freely project. Since the door is fixed by doing so, the door can be reliably fixed at an arbitrary opening position.

Further, since the engaging portion between the moving plate and the braking member is formed by the uneven surface, it can be securely fixed. Furthermore, since the detection member detects opening and closing of the door, it operates only when the door is opened and does not operate when the door is closed.
It has various excellent effects such as not hindering the unlocking operation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a use state of a door fixing device which is an embodiment of the present invention.

FIG. 2 is a partially omitted front view showing the overall configuration of a door fixing device that is an embodiment of the present invention.

FIG. 3 is a sectional view taken along line XX in FIG. 2 of the door fixing device that is an embodiment of the present invention.

FIG. 4 is a perspective view showing a relationship between a braking member and a slide plate used in a door fixing device which is an embodiment of the present invention.

FIG. 5 is a perspective view showing a relationship between an arm member and a moving plate used in a door fixing device which is an embodiment of the present invention.

FIG. 6 is an explanatory view showing an operating state of the door fixing device of the present invention.

FIG. 7 is an explanatory view showing an operating state of the door fixing device of the present invention.

[Explanation of symbols]

 1 Door 10 Drive Mechanism 11 Rotating Link 11a First Working Arm 11b Second Working Arm 12 Operating Rod 13 Connection Link 14 Fixed Shaft 15 Pin 16 Pin 17 Slide Plate 17a Oblong Hole 17b Action Pin 17c Supporting Oblong Hole 18 Detection Member 19 Storage part 20 Inclined groove 21 Engagement unevenness 22 Braking member 22a Long hole 23 Arm member 24 Moving plate 24a Engagement unevenness 24b Roller 25 Spring 26 Shaft 27 Door frame 28 Shaft 29 Guide part (concave groove) 29a Guide rail part 30 Chamber 31 pin 33 pin 34 nut

Claims (3)

[Claims] 1. An arm disposed at an upper part of a door, one end of which is rotatably supported by a door frame, and a movable plate which is rotatably supported by the other end of the arm and has an engaging portion. A guide member provided on an upper part of the door for guiding the movement of the moving plate, and a braking member having an engaging portion arranged along the guide portion for engaging and disengaging with an engaging portion of the moving plate. , is composed of a drive mechanism for vertically moving the said braking member in the disengaged position and the engaged position, the operating lever for driving said drive mechanism, said drive mechanism
The structure rotates about the fixed shaft and the first working arm and the first working arm.
A rotation link with two working arms and one end as a detection member
A connecting link whose other end is connected to the first working arm and the operating rod.
And the braking member is vertically moved in the vertical direction by the inclined groove.
It is composed of a slide plate and is erected on the second working arm.
The pin is loosely fitted in the elongated hole of the slide plate,
Is operated by operating the operating rod only when the
The sliding plate is moved through the rotation link to secure the door.
Door fixing device characterized by setting . 2. The moving plate has a width slightly larger than the width of the engagement unevenness.
Claims characterized in that the threshold roller is rotatably arranged.
The door fixing device according to item 1 . 3. The door fixing device according to claim 1, wherein the detection member detects opening and closing of the door, and is arranged at a free end of the door so as to be retractable.