JP4210771B2 - Opening / closing mechanism of revolving door - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention mainly relates to an opening / closing mechanism for a revolving door in a building structure, in particular, the revolving door can be opened in any direction, and the closed posture can be reliably locked, In addition, the present invention relates to a rotating door opening / closing mechanism having a function of unlocking a latch at the same time as opening / closing operation of a door by pushing or pulling a push button and opening the door with one touch.
[0002]
[Prior art]
In general, as a revolving door provided at a room entrance / exit of a building structure, there is a front / rear opening / closing type that can be opened / closed by pulling forward or pushing in. In order to maintain a closed position, such a front / rear opening / closing type rotary door is provided with a temporary lock such as a spring catch or a magnetic catch, which is called a triangular patch. It can be opened and closed. Therefore, it is necessary to provide another lock lock such as a lock to prevent the door from being naturally opened due to leaning on the door. However, attaching the two types of locks has a problem that the cost is high and the installation work is troublesome.
[0003]
[Problems to be solved by the invention]
Therefore, in order to solve the above-mentioned problem, the present applicant has a simple locking member with a function capable of reliably locking the closed posture while being able to open the door in any direction. A special opening / closing 2001-329732 was proposed that can be achieved simply by attaching a sash.
[0004]
However, in the above structure, the engagement portions (5b) and (5b) provided at the inclined skirt portion of the latch (6) fit into the recessed fitting portion (4) of the engaged member (E) to open and close the door. Due to the structure of blocking, the projection amount of the latch (6) becomes longer by the amount of forming the engaging portion. Therefore, when the door is opened, there is a problem that the latch protrudes long from the door end surface and hooks clothes or the like. In addition, when the door is closed, the guide piece (8) that makes contact with the latch engaging portions (5b) and (5b) and retracts the latch must be formed in a state that it protrudes long to the fixed frame side. In addition, there are problems such as being dangerous by catching the hand and clothes.
[0005]
Accordingly, the present invention solves the above-mentioned problems, and at the same time the door is opened or closed by pushing or pulling the push button, the latch is unlocked and the door can be opened with one touch, and the limb movement function is injured. The main purpose of the present invention is to provide a mechanism for opening and closing a revolving door that can reduce the burden of the door opening operation for the handicapped.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention takes the following technical means. That is, in the opening / closing mechanism of the rotating door according to the present invention, the door A is pivotably attached to the fixed frame B ′ via the hinge C, and the free end side end surface 1 of the door A is provided. Is provided with a locking member D for holding the closed position of the door A. The locking member D is accommodated in a cylindrical case 2 having an opening at one end thereof, and is retractable in the case 2 so that the locking member D can be moved in and out by a spring 3 from the back. The latch 6 is biased in the projecting direction and has a triangular tip 6a in plan view at the tip, and the fixing frame B opposed to the latch 6 is a concave fitting that receives the triangular tip 6a of the latch 6. An engaged member E having a portion 4 is provided, an engaging portion 6b having side surfaces parallel to the left and right sides is provided in the middle of the triangular tip portion 6a, and the recessed fitting portion 4 of the engaged member E has When the door A is closed, the engaging portion 6b of the triangular tip 6a is engaged to prevent the door A from being opened and closed. The engaging groove 4a is provided, and push buttons 7 and 7 for moving the latch 6 back to the unlocking position are provided on the front surface 9 and the rear surface 10 of the door A.
[0007]
The push button 7 is formed so that the latch 6 can be retracted to the unlocked position by a pushing operation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described below based on the first embodiment shown in FIGS. In the figure, symbol A indicates a pivotable door, which is pivotally attached to a fixed frame B ′ via a hinge C, and holds the closed position of the door A on the end face 1 on the free end side. A locking member D is provided.
[0009]
The locking member D has a cylindrical case 2 having an opening at one end, and is housed in the case 2 so as to be able to protrude and retract, and is always urged in a protruding direction by a spring 3 from the back, and has a triangular shape in plan view at the tip. And a latch 6 having a tip 6a. Further, the fixed frame B facing the latch 6 is provided with an engaged member E having a recessed fitting portion 4 for receiving the triangular tip portion 6a of the latch 6.
[0010]
An engaging portion 6b having side surfaces parallel to each other is provided in the middle of the triangular tip portion 6a, and the triangular tip portion 6a when the door A is closed in the recessed fitting portion 4 of the engaged member E. An engaging groove 4a that engages with the engaging portion 6b to prevent the door A from opening and closing is provided. Further, push buttons 7 and 7 for retracting the latch 6 to the unlocking position are provided on the front surface 9 and the rear surface 10 of the door A.
[0011]
The mechanism for retracting the latch 6 to the unlocked position against the spring 3 by the push buttons 7 and 7 is not specified, but in this embodiment, as shown in detail in FIGS. Inclined guide surfaces 13, 13 with which the tip ends of the slidable contact are provided at the rear part of the latch 6, and when the push buttons 7, 7 are pressed, the tip ends slidably contact the inclined guide surface 13 and the latch 6 retracts to the unlocked position It is formed to do.
[0012]
Now, in the state of FIG. 2, the latch 6 is engaged with the concave fitting portion 4 and the door is held in the closed posture. In this state, the door cannot be opened unless the left and right engaging portions 6 b of the latch 6 are fitted and engaged with the engaging grooves 4 a of the recessed fitting portion 4 to retract the latch 6. When one of the push buttons 7 is pushed from this state, the inclined guide surface 13 is pushed by the tip of the push button 7 as shown in FIG. 3, and the latch 6 is moved back to the unlocked position. For this reason, the door A can be opened by the force of pushing the push button 7 simultaneously with the release of the latch 6. When the hand is released from the push button 7, the push button 7 returns to the original posture together with the latch 6 by the force of the spring 3. When the door is closed, the tip inclined surface of the latch 6 comes into contact with the edge of the fixed frame B or the engaged member E from the state shown in FIG. Return to. In this series of operations, the engaging portion 6b having side surfaces that are parallel to each other is formed on the middle part of the latch tip portion 6a having a triangular shape in plan view. Therefore, the protruding amount of the latch 6 is a triangular tip portion. 6a can be accommodated within the range, and the protrusion of the latch when the door is opened can be kept small, and the inclined end surface of the latch 6 is the edge of the fixed frame B or the engaged member E even when the door is closed. Since it is in contact with the portion and moves backward, there is no need to provide a large guide piece on the engaged member E to guide the backward movement of the latch as in the prior art.
[0013]
FIG. 7 shows another embodiment of the retracting function of the latch 6 by the push button 7. The latch 6 is always urged by the spring 3 in the protruding direction. A slide plate 14 that slides along the push direction of the push buttons 7 and 7 is provided at the rear of the latch 6, and inclined guide surfaces 14 a and 14 a are formed on the slide plate 14, and the inclined guide surfaces 14 a and 14 a are formed. A pin 15 slidably contacting is formed on the latch 6. With such a configuration, when either one of the push buttons 7 is pushed or pulled, the pin 15 is pushed backward by the inclined guide surface 14a, and the latch 6 is retracted to the unlocked position.
[0014]
Although one embodiment of the present invention has been described above, the present invention is not necessarily limited to the structure of these embodiments. For example, as shown in the figure, the small guide pieces 8 and 8 with which the tip inclined surface of the latch 6 contacts when the door is closed may be provided on the end portion of the fixed frame B or the engaged member E. In addition, in the present invention, the object can be achieved and modified as appropriate within the scope of the following effects.
[0015]
【The invention's effect】
Since the present invention is configured as described above, the door can be opened in either the front or rear direction with one touch at the same time as the unlocking operation of the latch by the pushing operation of the push button. The burden of door opening operation can be reduced for a handicapped person. In particular, according to the present invention, the protrusion of the latch when the door is open can be suppressed to a small extent so that clothes or the like can be prevented from being caught, and the inclined surface of the leading end of the latch is fixed even when the door is closed. Since the frame or the edge of the engaged member contacts and moves backward, there is no need to provide the engaged member E with a large guide piece that actively guides the backward movement of the latch as in the prior art. There is an effect.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a door and a fixed frame incorporating a door opening / closing mechanism according to the present invention.
FIG. 2 is a sectional view showing a first embodiment of the opening / closing mechanism.
FIG. 3 is a sectional view showing a state in which the latch of the opening / closing mechanism is retracted.
FIG. 4 is an enlarged perspective view of only the latch of the opening / closing mechanism.
FIG. 5 is a cross-sectional view showing a process in which the door of the opening / closing mechanism is closed.
FIG. 6 is a perspective view of only an engaged member of the opening / closing mechanism.
FIG. 7 is a sectional view showing another embodiment of the latch retraction mechanism portion in the opening / closing mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Door end surface 2 Cylindrical case 3 Spring 4 Recessed fitting part 6 Latch 6a Latch triangular tip part 6b Latch engagement part 7 Push button 9 Door front face 10 Door rear face A Door B, B 'Fixed frame C Hinge D Lock member E Engaged member

Claims (1)

The door (A) is pivotally attached to the fixed frame (B ') via a hinge (C), and the door (A) has an end face (1) on the free end side of the door (A). A locking member (D) for holding a closed posture is provided, and the locking member (D) is accommodated in a cylindrical case (2) having an opening at one end, and is retractable in the case (2) from the back. A latch (6) that is constantly urged in a protruding direction by a spring (3) and has a tip (6a) having a triangular shape in plan view at the tip, and further a fixed frame (B) facing the latch (6) Is provided with an engaged member (E) having a recessed fitting part (4) for receiving the triangular tip part (6a) of the latch (6), and is parallel to the middle part of the triangular tip part (6a). An engaging portion (6b) having a side surface is provided, and the recessed fitting portion (4) of the engaged member (E) has an engaging portion of a triangular tip portion (6a) when the door (A) is closed. (6b) engaging groove (4a) is provided to prevent the closing of the door (a) engages, the operation further pushes the latch (6) Ri push button to retract to unlock position (7), (7) the front (9) and closing mechanism of the pivoting doors that are provided on the rear surface (10) of the door (A).

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