JP2001311345A - Lock device for earthquake and storage box having therreof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure a locking at the time of earthquake while minimizing the occurrence of defective parts by surely catching a bracket even if a recessed part is not formed in the projected end part of a dead bolt. SOLUTION: This lock device for earthquake comprises a casing 6 installed in a box body 4 and having a guide tube part 5 in vertical direction, a bracket 7 installed on the inner surface of a hinged door 3 pivotally installed on the front opening part of the box body 4, and dead bolts 8 projectedly and recessedly inserted into the guide tube part 5 of the casing 6 and having a projected end part hooked to the bracket 7 at the time of earthquake to stop the opening of the hinged door 3. A hooking part 16 projected from the inside diameter of the guide tube part 5 in radial outer direction is provided at the projected end part of the dead bolts 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake lock device and a storage box having a hinged door having the lock device.

[0002]

2. Description of the Related Art Heretofore, by detecting a swing generated in a storage box constituting a cupboard or a storage furniture of a system kitchen and automatically locking an opening door, a storage article in a box body pops out. Earthquake locking devices are already on the market to prevent the
The lock member that locks the hinged door is roughly classified into a swing type in which a lock member is pivotally attached by a pin and a lock member that locks the hinged door performs a linear motion.

[0003] Among them, a slide type earthquake locking device is a casing which is mounted in a box body and has a vertical guide cylinder, and a bracket which is mounted on an inner surface of a hinged door which is pivotally attached to a front opening of the box body. And a dead bolt having a protruding end portion which is inserted into the guide cylinder portion of the casing so as to be able to move back and forth and is caught by the bracket in the event of an earthquake to prevent the opening of the hinged door.

In this slide type earthquake locking device, since the dead bolt needs to be inserted with some play to the guide cylinder portion in relation to the linear movement of the dead bolt, the projecting end portion of the dead bolt is required. When the bracket is pulled in the opening direction of the hinged door by the bracket, it falls down slightly in the same direction, and even though the deadbolt is properly projecting to the locking position, the bracket may come out from the protruding end and the hinged door may not be securely locked. .

Therefore, in order to solve the above-mentioned drawbacks inherent in the slide type using a dead bolt that moves linearly, a recess is provided at the protruding end of the dead bolt to ensure that the bracket is hooked to the hook. As a result, a seismic locking device has been proposed which ensures that the bracket is reliably caught by the dead bolt even if the dead bolt slightly falls in the opening direction of the hinged door (JP-A-9-287338). Reference).

[0006]

However, with the means for forming a recess at the protruding end of the dead bolt as in the above-mentioned conventional locking device at the time of an earthquake, when the dead bolt protrudes and retracts from the casing, the recess is formed. The portion where the portion is formed always passes through the inside of the guide tube portion. On the other hand, for example, when the deadbolt is a molded product made of a synthetic resin, burrs are likely to be generated around the recess.

[0007] For this reason, in the conventional earthquake lock device,
Burrs generated around the hollow during resin molding are caught on the inner surface of the guide cylinder and increase the frictional resistance, which increases the possibility of defective products that do not properly eject dead bolts during an earthquake ing. Therefore,
An object of the present invention is to ensure that a bracket can be reliably caught without forming a recess at a protruding end portion of a dead bolt, and to secure locking during an earthquake by the dead bolt while minimizing the occurrence of defective products. On the point.

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention has taken the following technical means. That is, according to the present invention, in the above-mentioned slide type earthquake locking device having the linearly moving dead bolt, the projecting end portion of the dead bolt is provided with a hook portion projecting radially outward from the inner diameter of the guide cylinder. Things.

According to the present invention, since the bracket is hooked on the hook portion of the dead bolt, the bracket can be reliably caught even if the dead bolt slightly falls in the opening direction of the hinged door. Further, since the hook portion is formed so as to protrude radially outward from the inner diameter of the guide tube portion, the hook portion does not pass through the inside of the guide tube portion. Therefore, even if burrs are generated around the hook portion, the burrs do not catch on the inner surface of the guide tube portion and increase the frictional resistance, and the dead bolt does not protrude properly during an earthquake. Is less likely to occur.

The present invention also provides a slide-type earthquake lock device having a dead bolt that moves linearly, wherein the outer peripheral surface of the dead bolt is made of a rubber material. According to the present invention, since the outer peripheral surface of the deadbolt is made of a rubber material, the bracket is hooked on the protruding end portion while being cut into the outer peripheral surface of the deadbolt. For this reason, even if the recessed portion is not formed at the protruding end portion of the dead bolt, it is ensured that the dead bolt is slightly caught in the opening direction of the hinged door and that the dead bolt is stuck to the bracket.

Further, according to the present invention, in the above-mentioned sliding type locking device having a dead bolt which moves linearly, the guide cylinder of the casing is inclined toward the inner side of the box body toward the projecting side of the dead bolt. It is formed in. According to the present invention, since the guide cylindrical portion of the casing is inclined in the above direction,
The protruding end of the dead bolt projects to the lock position with the protruding end facing the inside of the box body. For this reason,
Even if the recessed portion is not formed at the protruding end of the dead bolt, the catch to the bracket when the dead bolt slightly falls in the opening direction of the hinged door is ensured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention illustrated in the drawings will be described. The earthquake locking device 1 according to the present embodiment detects a swing generated in a storage box 2 constituting a cupboard, storage furniture, or the like of a system kitchen, and automatically locks a hinged door 3. A box body 4 having an open front side, and the box body 4
Is provided with a hinged door 3 which is pivotally attached to a front opening of the vehicle through a hinge (not shown).

[0013] As shown in FIG.
Are inserted into the box main body 4 and have a casing 6 having a vertical guide cylinder 5, a bracket 7 attached to the inner surface of the hinged door 3, A dead bolt 8 having a protruding end portion which is caught on the bracket 7 in the event of an earthquake to prevent the opening of the hinged door 3.

Among the above-mentioned components, the casing 6 is made up of a plastic case body 9 formed in an open top and a short cylindrical shape, and a plastic lid member 10 for closing the upper part of the case body 9. Storage space 11 inside
It has. A rolling ball 12 made of a steel sphere is stored in the storage space 11, and the rolling ball 12 is placed on the bottom wall of the case body 9 at a position separated from the lock plate 13 of the dead bolt 8. A positioning recess 14 for calming is formed.

The bottom wall of the casing 6 has a cylindrical guide tube portion 5 whose axis is oriented vertically.
Are formed integrally, and the body 15 of the dead bolt 8 is slidably inserted into the guide cylinder 5. The dead bolt 8 includes a cylindrical body 15 guided vertically by the guide cylinder 5, a disk-shaped lock plate 13 formed at an upper end of the body 15, and a casing 6.
And a hook portion 16 formed at the lowermost end of the protruding end portion that protrudes and retracts. The hook portion 16 is more radially outward than the inner diameter of the guide tube portion 5 (substantially the same as the inner diameter of the body portion 15). It is formed in a protruding flange shape.

The body 15 of the dead bolt 8 may be formed of a prism having a rectangular cross section. In this case,
A hook portion made of a claw member protruding only to the rear side can be employed.

The bracket 7 is integrally formed of a synthetic resin such as a hard plastic, and is fixed to the inner surface of the hinged door 3 in a cantilever manner so that the tip side faces the inside of the box body 4 (the left side in FIG. 1). . The bracket 7 has a hooking portion 17 on the tip side which is inclined in a direction in which the deadbolt 8 is immersed with the closing of the hinged door 3, and an upper end of the hooking portion 17 is provided outside the box body 4 ( (Right side of Fig. 1)
A hook claw extending toward is formed.

In the middle of the bracket 7, there is formed an immersion piece 18 which is inclined in a direction in which the dead bolt 8 is immersed with the opening of the hinged door 3, and this immersion piece 18 is largely elastically deformed in the vertical direction. It is formed to a thickness that allows it. In addition, the bracket 7 is provided with the above-mentioned hook 17 and the immersion piece 1.
8 is mounted at a height that exactly interferes with the protruding end of the dead bolt 8.

Next, the operation of the earthquake lock device 1 having the above configuration will be described. First, in a normal time without an earthquake, as shown in FIG. 1A, the rolling ball 12 is stable in the positioning recess 14 in the casing 6, and the dead bolt 8 is free along the guide cylinder 5. You can come and go. For this reason, even when the latch 17 or the immersion piece 18 of the bracket 7 hits the projecting end of the dead bolt 8 when opening and closing the hinged door 3, the dead bolt 8 remains inside the casing 6 as shown by a broken line in FIG. The door 3 can be opened and closed as usual.

On the other hand, if an earthquake occurs while the hinged door 3 is closed, as shown in FIG.
The rolling ball 12 separates from the positioning concave portion 14 in the casing 6 and rides on the lock plate 13 of the dead bolt 8 by the accompanying inertia force, thereby restricting the dead bolt 8 from entering upward. For this reason,
Even if the hinged door 3 receives a strong force in the opening direction due to the shake of the earthquake, as shown in FIG. 1B, the immersion piece 18 is elastically deformed, and the claw portion of the hooking portion 17 becomes the hook portion 1 of the dead bolt 8.
Therefore, the opening of the hinged door 3 is blocked and locked.

When the casing 6 returns to its original horizontal state after the earthquake has subsided, the rolling balls 12 move into the positioning recesses 14.
And the hinged door 3 can be opened and closed again. According to the present embodiment, since the hook 16 of the dead bolt 8 protrudes radially outward from the inner diameter of the guide cylinder 5, the hook 16 may pass through the inside of the guide cylinder 5. Absent. Therefore, even if burrs are formed around the hook portion 16 during resin molding, the burrs do not catch on the inner surface of the guide tube portion 5 and increase the frictional resistance. It is possible to minimize the occurrence of defective products that do not protrude into the product.

FIGS. 2A to 2C show the dead bolt 8.
Are shown. Of these, in the dead bolt 8 of FIG. 2A, the hook portion 16 is formed not in a flange shape but in a trumpet shape gradually increasing in diameter toward the tip. Also, the dead bolt 8 shown in FIG.
In FIG. 2B, the body 15 is covered with a cover member 20 made of silicon rubber or the like having low friction. In the dead bolt 8 shown in FIG.
1.

In the case where the outer peripheral surface of the protruding end of the dead bolt 8 is made of a rubber material as described above, the hooking claw of the bracket 7 bites into the outer peripheral surface of the dead bolt 8 and is attached to the protruding end. You will be caught. Therefore, even in this case, even if the protruding end portion of the dead bolt 8 does not have a recess as in the related art, the dead bolt 8 can be reliably caught on the bracket 7 when slightly falling in the opening direction of the hinged door 3. can do.

FIG. 3 shows another embodiment of the present invention. In this embodiment, a guide cylinder 5 of a casing 6 is provided.
Is formed so as to be inclined toward the inside of the box body 4 (to the left in FIG. 3) toward the projecting side of the dead bolt 8, so that the protruding end of the dead bolt 8 faces the inside of the box body 4. In the state, it protrudes to the lock position. Therefore, in the case of the embodiment of FIG.
Even if the protruding end of the dead bolt 8 does not have a recess as in the related art, the catch on the bracket 7 when the dead bolt 8 slightly falls in the opening direction of the hinged door 3 is ensured.

FIG. 4 shows still another embodiment of the present invention. This earthquake lock device 1 sets the rolling ball 12 so as to be sandwiched between the lock plate 13 and the bottom wall of the casing 6, contrary to the case of FIG. The dead bolt 8 is immersed in the casing 6. Then, when an earthquake occurs, the rolling ball 12 moves to the outside of the lock plate 13, whereby the dead bolt 8 naturally falls and projects, and the bracket 7 is locked by the projecting end.

It should be noted that the dead bolt 8 shown in FIGS. 2 and 3 can be adopted in the embodiment shown in FIG.

[0027]

According to the present invention, the bracket can be reliably caught without forming a recess at the protruding end of the deadbolt, thereby minimizing the occurrence of defective products whose deadbolt projection is uncertain. In addition, the lock at the time of the earthquake due to the deadbolt can be ensured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an attached state of an earthquake locking device, wherein (a) shows a non-locked state and (b) shows a locked state.

FIG. 2 is a view showing a modified example of a dead bolt.

FIG. 3 is a cross-sectional view showing an attached state of an earthquake locking device according to another embodiment.

FIG. 4 is a cross-sectional view showing an attached state of an earthquake locking device according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Earthquake locking device 2 Storage box 3 Door 4 Box body 5 Guide cylinder 6 Casing 7 Bracket 8 Dead bolt 16 Hook

Claims (6)

[Claims] 1. A casing mounted in a box main body and having a vertical guide cylinder, a bracket mounted on an inner surface of a hinged door pivotally attached to a front opening of the box main body, and a guide cylinder of the casing. A dead bolt having a protruding end portion which is inserted into and retracted from the bracket and which is caught by the bracket in the event of an earthquake to prevent the opening of the hinged door, wherein the protruding end portion of the dead bolt is provided. A locking portion protruding radially outward from the inner diameter of the guide tube portion. 2. A casing mounted in a box main body and having a vertical guide cylinder, a bracket mounted on an inner surface of a hinged door pivotally mounted on a front opening of the box main body, and a guide cylinder of the casing. A dead bolt having a protruding end portion which is inserted through the bracket so as to be able to move out and out and is caught by the bracket in the event of an earthquake to prevent the opening of the hinged door, wherein an outer peripheral surface of the dead bolt is provided. An earthquake locking device comprising a rubber material. 3. A casing mounted in the box main body and having a vertical guide cylinder, a bracket mounted on an inner surface of a hinged door pivotally mounted on a front opening of the box main body, and a guide cylinder of the casing. A dead bolt having a protruding end portion that is inserted into and retracted from the bracket and that is caught by the bracket in the event of an earthquake to prevent the opening of the hinged door. An earthquake locking device characterized in that it is formed so as to be inclined toward the inside of the box body as it goes toward the projecting side of the deadbolt. 4. A box main body, a hinged door pivotally attached to a front opening of the main body, a casing mounted in the box main body and having a vertical guide cylinder, and mounted on an inner surface of the hinged door. And a dead bolt, which is inserted into the guide cylinder portion of the casing so as to be able to move back and forth, and has a protruding end portion which is caught by the bracket and prevents the opening of the hinged door in the event of an earthquake. The storage box, wherein a hook portion is provided at a protruding end of the dead bolt so as to protrude radially outward from an inner diameter of the guide cylinder. 5. A box main body, a hinged door pivotally attached to a front opening of the main body, a casing mounted in the box main body and having a vertical guide cylinder, and mounted on an inner surface of the hinged door. And a dead bolt, which is inserted into the guide cylinder portion of the casing so as to be able to move back and forth, and has a protruding end portion which is caught by the bracket and prevents the opening of the hinged door in the event of an earthquake. A storage box, wherein an outer peripheral surface of the dead bolt is made of a rubber material. 6. A box main body, a hinged door pivotally attached to a front opening of the main body, a casing mounted in the box main body and having a vertical guide cylinder, and mounted on an inner surface of the hinged door. And a dead bolt, which is inserted into the guide cylinder portion of the casing so as to be able to move back and forth, and has a protruding end portion which is caught by the bracket and prevents the opening of the hinged door in the event of an earthquake. A storage box, wherein the guide cylinder portion of the casing is formed so as to be inclined toward the inside of the box body as it goes toward the projecting side of the deadbolt.