JP2000213224A - Lock device in earthquake of hinged door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the lock without holding a ball in the lock position by preventing the rotation of a locking body mounted on a device body by a ball moved from a stable position, and retaining the slightly opened state of a hinged door by the elastic force of the groove of the locking body. SOLUTION: When an earthquake occurs, a ball 9 moves forward from the rear end chamber of a vibration area A and laterally moves at the front edge thereof. The front part of the vibration area A is extended sideward in the inclined front edge, and the ball 9 laterally moves into the front part extended sideward. According to this, the locking part of a locking body is never lifted up even if a hinged door 91 touches against the tip side inner wall of an opening 7a according to the opening directional movement, and the groove of the locking part is contracted, so that the locking part reaches an opening end 7b through the throttled part 7c of a locking tool 7. When the force received from the vibration return of the earthquake is less than the locking retaining force in the step in this state, the hinged door 91 is not released, and the hinged door 91 is locked and retained in the state having a clearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinged door locking device for automatically locking a hinged door in the event of an earthquake.

[0002]

2. Description of the Related Art Conventionally, in a hinged door locking device that automatically locks a hinged door in the event of an earthquake, an earthquake detection method has been used in which a ball is moved by shaking to detect an earthquake. In this case, in order to secure the lock, a method of holding the ball at the lock position with a magnet or the like has been conventionally used. However, when held, it is necessary to release from holding (its holding force) at the time of release, and the release mechanism is complicated.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by moving the ball to the locked position by swinging, but without locking the ball in the locked position, it is possible to obtain an effect of ensuring locking as well as holding. It is an object of the present invention to provide a lock device for a hinged door that automatically locks a possible hinged door in the event of an earthquake.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a locking member rotatably mounted on an apparatus main body mounted on a shelf main body, and a lower portion below a rear portion of the locking body. A ball that moves from its stable position in the vibration area to prevent rotation of the locking body, and a locking tool that is attached to the hinged door side and locks the locking body with a small force when the hinged door is closed,
The locking body, whose rotation has been prevented, becomes another locking state with the locking tool in the event of an earthquake, and the locking state is a return resistance due to the elastic force of the groove of the locking body with the hinged door slightly opened. The present invention proposes a locking device for an opening of a hinged door which is in an opened and held state.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a locking device for a hinged door according to an embodiment of the present invention. FIGS. 1 and 2 show a seismic locking device according to the present invention. In the seismic locking device, a recess as a vibration area A is provided in a device main body (1). The vibration area A accommodates a ball (9) so as to vibrate, and the vibration area A has a rear end chamber A9 as shown in FIG. Further, the front edge A1 of the vibration area A allows a lateral movement to be added when the stored ball (9) moves forward. Since the floor of the vibration area A has the lowest rear end chamber A9 and is gently inclined in a horn-like shape from there, the stable position of the ball (9) is the rear end chamber A9. Next, a locking body (6) is attached to the apparatus main body (1) so as to be rotatable about a shaft (6e). As shown in FIG. 3, the locking body (6) has a front part (6a).
And a rear part (6f), and the rear part (6f) protrudes above a front part of the vibration area A. That is, in the vibration area A below the rear part of the locking body (6), a ball (9) is provided which moves from its stable position and prevents the rotation of the locking body (6). The front part (6a) of the locking body (6) is bent and provided with a locking part (6b) so that it can be locked by a locking tool (7) attached to the hinged door (91). The locking portion (6b) of the locking body (6) has a step (6c), and the width of the distal end (6d) of the locking portion is enlarged on both sides. Next, the locking member (7) has an opening (7a) into which the locking portion (6b) of the locking body (6) is fitted.
That is, the locking member (7) is attached to the hinged door (91) side, and when the hinged door (91) is closed, the locking member (6) is closed.
Are locked with a light force. Next, the opening (7a) is continuous with the opening end (7b) of the tip of the locking member (7), and a narrow stop (7c) is provided between the two. The operation of the locking device of the present invention shown in FIGS. That is, in a normal use state, FIG.
As shown in FIG. 2, the locking body (6) has its front part (6a) lowered by its own weight about its axis (6e).
The hinged door (91) is opened and closed in this state.
Since the front surface of the locking portion (6b) is inclined, the locking portion (6b) of the locking body (6) rises around the shaft (6e) when the locking tool (7) enters and hits. Therefore, the locking member (7) lifts the locking portion (6b) and enters the locking portion (6b).
b) fits into the opening (7a) of the locking tool (7). Here, during the approach process, the leading end (6d) of the locking portion of the locking body (6) passes through the opening end (7b) located on the distal end side from the opening (7a). Since the opening width of the opening end (7b) is smaller than the lateral width of the locking end (6d), the locking end (6d) can pass through without being fitted into the opening end (7b).
The locking portion (6b) of the locking body (6) can be lifted because the ball (9) is in the stable position of the rear end chamber A9 in the vibration area A. That is, since the rear part (6f) of the locking body (6) is located in front of the vibration area A, the locking body (6) can rotate without being hindered by the ball (9). The above is the movement of the locking body (6) when closing the hinged door (91), but when opening the hinged door (91), the locking part of the locking body (6) fitted in the opening (7a). (6b) hits the inner wall (forming the stop (7c)) on the tip side of the opening (7a) of the locking tool (7). Shaft (6
Since the locking portion (6b) is below the position of (e), the locking portion (6b) of the locking body (6) is moved to the inner wall on the distal end side of the opening (7a) with the retraction of the locking tool (7). Is also lifted. Therefore, when the hinged door (91) is opened and closed, the locking part (6b) of the locking body (6) fits and floats with a light force into the opening (7a) of the locking member (7), and prevents opening and closing of the hinged door (91). It does not become a large resistance. That is, when the hinged door (91) is closed, the locking portion (6b) of the locking body (6) is fitted into the opening (7a) of the locking tool (7) as shown in FIGS. Has become. When an earthquake occurs in this state, the ball (9) moves forward from the stable position of the rear end chamber A9 shown in FIG. 4 in the vibration area A and moves laterally at the front edge A1. Vibration area A
The rear part is a rear end chamber A9, and the front part expands laterally at the inclined front edge A1. Therefore, when the ball (9) advances, a lateral movement is added at the inclined leading edge A1. The sphere (9) therefore travels laterally into the laterally enlarged front (sometimes accompanied by longitudinal vibration). As the path of the ball (9), the path at the front part of the vibration area A is expanded to the side so that the time at which the ball (9) exists at the front part is longer than the time at which the ball (9) exists at the rear part. The sphere (9) travels in the lateral direction in the front part, but starts to return when reaching the side end due to the inclination of the floor of the vibration area A. The sphere (9) may return to the center and enter the rear end chamber A9, or may pass past and proceed into the front portion that has expanded to the opposite side. That is, the ball (9)
The time that exists in the front part is longer than the time that exists in the rear part, and it is possible to cope with a shift (delay) of the opening / closing waveform of the hinged door (91) from the vibration waveform of the earthquake. That is, the hinged door (9
The ball (9) remains below the rear part (6f) of the locking body (6) even if 1) continues to move in the opening direction. As a result, as shown in FIGS. 5 and 6, the locking portion (6b) of the locking body (6) moves toward the inner wall on the distal end side of the opening (7a) as the hinged door (91) moves in the opening direction. You can't lift it. As a result, the stop (7)
c) Locking portion (6b) (groove shrinks due to having groove)
Pass through to the open end (7b). Open end (7
In step (b), the locking portion (6b) secures a locking holding force (also a locking releasing force) at the step (6c). That is, the locking body (6), whose rotation has been prevented, becomes another locked state with the locking member (7) at the time of the earthquake, and the locked state is such that the hinge means (91) is slightly opened and the elastic means ( (The groove functions as an elastic means) and is held open with a return resistance. In this state, the hinged door (91) is not released by the force received from the return of the tremor of the earthquake if it is lower than the locking holding force (also the locking releasing force) at the step (6c). That is, in the event of an earthquake, the hinged door (91) is locked and held with a gap. When the earthquake is over, the user pushes the hinged door (91) in the state of FIGS. 5 and 6 which is locked with a gap with a force greater than the holding force. As a result, the locked state is released, and the state shown in FIGS.
And as shown in FIG. 2, the locking body (6) passes through the aperture (7c) of the locking tool (7), returns to the opening (7a), and opens (91).
Can be opened and closed freely. On the other hand, the ball (9) returns to the rear end room A9 due to the inclination of the floor of the vibration area A regardless of the release of the locked state after the earthquake.

[0006]

The embodiments of the locking device of the swing door according to the present invention during an earthquake are as described above, and the effects thereof are listed below. (1) The locking device during an earthquake according to the present invention prevents the rotation of the locking member only when the ball has moved from its stable position. You can do it. (2) The locking device for an earthquake according to the present invention prevents the rotation of the locking member only when the ball moves from its stable position, so that it is not necessary to release from the holding (the holding force) at the time of releasing, and the locking device is released. The mechanism becomes simple.

[Brief description of the drawings]

FIG. 1 is a plan view of an apparatus embodying an earthquake locking device according to the present invention.

FIG. 2 is a side sectional view of FIG. 1;

FIG. 3 is a perspective view of a locking body of the device of FIG. 1;

FIG. 4 is a plan view of a vibration area of the apparatus of FIG. 1;

FIG. 5 is a plan view showing an operation state of the apparatus of FIG. 1;

FIG. 6 is a side sectional view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 3 Lid 6 Locking body 6a Front part 6b Locking part 6c Step 6d Locking part tip 6e Shaft 6f Rear part 7 Locking tool 7a Opening 7b Open end 7c Aperture 9 Ball 90 Body 91 Opening door A Vibration area A1 Front edge A9 Rear end room

Claims (1)

[Claims] A locking member rotatably mounted on an apparatus main body mounted on a shelf main body side, and a rotation of the locking member by moving from a stable position in a vibration area below a rear portion of the locking body. A ball for preventing movement, a locking member attached to the hinged door side and locking the locking member with a light force when the hinged door is closed, and the locking member for preventing the rotation In the event of an earthquake with a hinged door, the door is in another locked state during an earthquake, and the locked state is a state in which the door is slightly opened and held open with return resistance due to the elastic force of the groove of the locking body. When locking device