JP2001329732A - Opening/closing mechanism for revolving door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing mechanism opening a door in either of the forward and backward directions and surely locking a door closed position. SOLUTION: A lock member D holding the door closed position is arranged in the end face on the free end side of the door A and constructed of a cylindrical case having an opening part in one end part and a latch 6 housed in the case freely retractably, always energized in the projecting direction from the back part by means of a spring 3 and provided with an engagement projection part 5 to be engaged in an engagement recess part 4 in an engaged member E arranged in a fixed frame B facing the front end. In a plane view, the engagement projection part 5 is provided with a triangular tip part and laterally parallel side face engagement parts 5b formed in the slant base part of the triangular tip part, while the engaged member E is provided with a guide piece 8 abutting on the side face engagement part 5b of the latch in closing the door so as to retract the latch 6, and push buttons 7 retracting the latch to an unlocking position are arranged on the front and back faces of the door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pivoting door opening and closing mechanism for a building structure, and more particularly to a pivoting door opening / closing mechanism capable of opening a pivoting door in any direction. The present invention relates to an opening / closing mechanism for a rotating door having a function of being able to easily retract the latch by simply pressing a push button to release the lock.

[0002]

2. Description of the Related Art Generally, there is a front and rear opening and closing type door which can be opened and closed by pulling in and pushing in the room as a door provided at a doorway of a building structure. In order to maintain the closed posture, such a front / rear opening / closing type pivot door is provided with a temporary lock such as a spring catch or a magnet catch called a triangular patch, and the temporary lock is provided by pushing the door by hand or pulling it forward. It can be opened and closed. Therefore,
In order to prevent the door from opening naturally by leaning on the door, it was necessary to provide another lock lock such as a bar lock. However, mounting two types of locks is problematic in that the cost is high and the mounting operation is troublesome.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a lock having a simple structure, which is capable of opening a door in any of the front and rear directions, and of securely locking a closed position. The main object of the present invention is to achieve the above by simply attaching members, thereby reducing the total cost.

[0004]

In order to achieve the above object, the present invention takes the following technical measures. That is, in the rotating door opening / closing mechanism according to the present invention, the door A is rotatably attached to the fixed frame B ′ via the hinge C, and the end surface 1 on the free end side of the door A is provided. Is provided with a lock member D for holding the closed position of the door A. The lock member D is provided with a cylindrical case 2 having an opening at one end, and is housed in the case 2 so as to be freely protruded and retracted. A latch 6 provided with an engaging projection 5 which is urged in the protruding direction and engages with the engaging concave portion 4 of the engaged member E provided on the fixed frame B opposed to the front end. The convex portion 5 has a triangular tip 5a in plan view and left and right parallel side engaging portions 5b, 5b formed on the inclined skirt of the triangular tip 5a. When the door A is closed, the side engaging portion 5 of the latch
b, a guide piece 8 which comes into contact with 5b to retract the latch 6;
8, and push buttons 7, 7 for retracting the latch 6 to the unlocked position are provided on the front surface 9 and the rear surface 10 of the door A.

In the present invention, as described above, the lock member D is connected to the door A
It is preferable that the lock member D is attached to the fixed frame B and the engaged member E is attached to the door A as shown in FIG.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below with reference to FIGS.
A description will be given based on the first embodiment shown in FIG. In the drawing, reference numeral A denotes a pivotable door, which is rotatably attached to a fixed frame B ′ via a hinge C, and holds the closed position of the door A on the end surface 1 on the free end side. A lock member D is provided.

The lock 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 by a spring 3 in a protruding direction from a back portion and fixed to the front end. A latch 6 having an engaging projection 5 that engages with the engaging recess 4 of the engaged member E provided on the frame B is provided. The engaging projection 5 has a triangular tip 5a in plan view.
And right and left parallel side engaging portions 5b and 5b formed on the inclined skirt of the triangular tip 5a. Further, push buttons 7, 7 for retracting the latch 6 to the unlocked position against the spring 3 are provided on the front surface 9 and the rear surface 10 of the door A.
It is provided in.

The engaging recess 5 of the engaged member E has a triangular tip 5a of a latch 6 and a left and right parallel side engaging portion 5b formed on an inclined bottom of the triangular tip 5a. , 5b
It is formed in a shape that accepts Further, as shown in FIG. 5, when the door A is closed, the engaged members E are brought into contact with the side engaging portions 5b, 5b of the latch 6 and the guide pieces 8, 8 for retracting the latch 6 are provided on the front and rear surfaces of the door A. It is formed to be exposed.

Although the mechanism for retracting the latch 6 to the unlocked position against the spring 3 by the push buttons 7, 7 is not specified, in the present embodiment, as shown in detail in FIGS. At the rear of the latch 6, inclined guide surfaces 13, 13 with which the tips of 7, 7 are in sliding contact are provided. By pressing the respective push buttons 7, 7, the distal ends are in sliding contact with the inclined guide surface 13, and the latch 6 is unlocked. It is formed to retreat to the position. Incidentally, the engaging projection 5 of the latch 6 is
It has a shape having directivity that once needs to be engaged with the engagement concave portion 4 of the engaged member E.

Now, in the state shown in FIG.
And the door is held in the closed position. In this state, the door cannot be opened unless the left and right parallel side engaging portions 5b and 5b of the latch are fitted into and engaged with the step portions 4a of the engaging concave portion 4 to retreat the latch 6. In this state, when one of the push buttons 7 is pushed, the inclined guide surface 13 is pushed by the tip of the push button 7 as shown in FIG.
Retracts to the unlocked position. Therefore, the door A can be opened by the pressing force of 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.

FIG. 6 shows another embodiment of the retreat function of the latch 6 by the push button 7. The latch 6 is always urged by the spring 3 in the projecting direction. A slide plate 14 is provided at the rear of the latch 6 to slide in the direction in which the push buttons 7 are pushed, and the slide plate 14 is formed with inclined guide surfaces 14a, 14a.
A pin 15 slidably contacting the inclined guide surfaces 14a, 14a is formed on the latch 6 so as to protrude. With such a configuration,
When one of the push buttons 7 is pressed, the inclined guide surface 14 is pressed.
The pin 15 is pushed backward by a, and the latch 6 is retracted to the unlock position.

In the present invention, as shown in FIG. 7, the locking member D may be attached to the fixed frame B, and the engaged member E may be attached to the door A. In this case, it is necessary to push the push button 7 to retract the latch 6 to the unlock position, and then push the door A with the other hand or body to open it. Therefore, in such a case, if a resilient device such as a spring that constantly biases the door A in the opening direction is incorporated in the hinge portion of the door, the door A can be naturally opened at the same time when the push button 7 is pressed.

Although the embodiment of the present invention has been described above, the present invention is not necessarily limited to the structure of the embodiment, but has the structural requirements and achieves the object of the present invention. The present invention can be appropriately modified within the range in which the effects can be obtained.

[0014]

Since the present invention is constructed as described above, the door can be opened in any of the front and rear directions, and the function of securely locking the closed position is one simple function. It can be achieved only by attaching a lock member having a simple structure, and the total cost can be reduced. In particular, according to the configuration of the first aspect, the door can be opened with a single touch simultaneously with the unlocking operation of the latch by the pressing operation of the push button, and the burden of the door opening operation for a handicapped person with impaired limb motor function. There is an effect that can be reduced.

[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 a 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 sectional view showing a process of closing a door of the opening / closing mechanism.

FIG. 6 is a sectional view showing another embodiment of the latch retreat mechanism in the opening / closing mechanism.

FIG. 7 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 End surface of door 2 Cylindrical case 3 Spring 4 Engaging concave part 5 Engaging convex part 5a Triangular tip part 5b Side engaging part 6 Latch 7 Push button 8 Guide piece 9 Front of door 10 Rear of door 11 Front of fixed frame 12 Rear surface of fixed frame A Door B, B 'Fixed frame C Hinge D Lock member E Engaged member

[Procedure amendment]

[Submission date] May 19, 2000 (2005.1.
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Although the mechanism for retracting the latch 6 to the unlocked position against the spring 3 by the push buttons 7, 7 is not specified, in the present embodiment, as shown in detail in FIGS. At the rear of the latch 6, inclined guide surfaces 13, 13 with which the tips of 7, 7 are in sliding contact are provided. By pressing the respective push buttons 7, 7, the distal ends are in sliding contact with the inclined guide surface 13, and the latch 6 is unlocked. It is formed to retreat to the position.

Claims (2)

[Claims] 1. A door (A) rotatably attached to a fixed frame (B ') via a hinge (C), wherein the door (A) has a door (1) on an end surface (1) on a free end side. (A) is provided with a lock member (D) for holding the closed position, and the lock member (D) is housed in a cylindrical case (2) having an opening at one end and removably in the case (2). Engagement is always urged from the back by the spring (3) in the protruding direction and engages with the engagement recess (4) of the engaged member (E) provided on the fixed frame (B) facing the tip. It has a latch (6) provided with a projection (5), and the engagement projection (5) has a triangular tip (5a) in plan view.
And left and right parallel side engaging portions (5b) and (5b) formed on the inclined skirt of the triangular tip (5a), and the engaged member
(E) shows the side engaging portion (5) of the latch (6) when the door (A) is closed.
Guide pieces that abut on (b) and (5b) to retract the latch (6)
(8), (8), and push buttons (7), (7) for retracting the latch (6) to the unlocked position are provided on the front surface (9) and the rear surface (10) of the door (A). Opening and closing mechanism of the rotating door. 2. A door (A) rotatably attached to a fixed frame (B ') via a hinge (C), adjacent to an end surface (1) of the door (A) on a free end side. A lock member (D) for holding a closed position of the door (A) is provided on a fixed frame (B) to be closed, the lock member (D) has a tubular case (2) having an opening at one end, and the case (2) is retractably retracted, is constantly urged from the back by a spring (3) in a protruding direction, and is provided with an engagement recess (4) of an engaged member (E) provided on a door (A) opposed to the tip. ) Is provided with a latch (6) having an engagement projection (5), the engagement projection (5) has a triangular tip (5a) in plan view, and the triangular tip (5a). Left and right parallel side engaging portions (5b) and (5b) formed on the inclined skirt of the latched member (E) when the door (A) is closed. Guide pieces (8) and (8) are provided to abut the engaging portions (5b) and (5b) to retract the latch (6), and the latch (6) is further retracted to the unlock position. Push the front of the button (7), (7) the fixed frame (B)
(11) and an opening / closing mechanism for a rotating door provided on the back surface (12).