JP2006029043A - Lock device for earthquake and storage box having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for earthquake implementing a securer locking at the time of earthquake. <P>SOLUTION: The lock device for earthquake with a latch member 13 is provided in a casing 12 mounted on a frame 3 while a bracket 9 provided on a hinged door 4 installed openable/closable at a front opening of the frame 3 is formed in such a way that the latch member 13 is locked with the bracket 9 only when an earthquake occurs. The bracket 9 includes a pair of parts 11 to be engaged while a front end of the latch member 13 has a pair of engaging parts 20. The latch member 13 with the pair of engaging parts 20 is inserted freely rotatably around forward-to-backward axis relative to the casing 12 and shiftable either to an engaging state for hooking respectively to each part 11 to be engaged or a non-engaging state for coming off from the parts 11 to be engaged. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an earthquake locking device and a storage box having the same.

For example, in a storage box with a wing represented by furniture such as cupboards, bookshelves, chests, makeup cases, and top bags, a door (wing) is pivotally attached to the opening of the box body with the front open. ing.
In storage boxes with wings typified by the above-mentioned furniture, storage articles are frequently taken in and out, so in general there are few cases where a locking device is provided, and even if a locking device is provided, the user does not use this much. Many.

For this reason, as can be seen from the previous experience of the Great Hanshin Earthquake, when the storage box is shaken greatly due to a large earthquake, etc., the closed door opens and storage items such as tableware jump out. As a result, the stored items may be damaged or hit by a resident.
Therefore, a wing is pivotally attached to the opening of the frame so that it can be freely opened and closed. A casing is provided on the inner surface of the opening of the frame. The casing contains a latch member that is normally in the unlocked position and moves to the locked position by vibration. On the inner surface of the lock, a bracket that engages the protruding end of the latch member in the locked position is provided, and the latch member returns to the unlocked position as the wing moves in the closing direction. A storage box having a function has already been proposed (see, for example, Patent Documents 1 and 2).

  JP-A-8-199886   JP-A-9-287338

However, the conventional earthquake locking device and the storage box having the same have a hook structure in which the protruding end portion of the latch member protruding upward or downward from the casing in the event of an earthquake is fitted into one recess formed in the bracket. Therefore, the latch member and the bracket are disengaged particularly when the earthquake is severely shaken, and there is a possibility that a reliable lock during the earthquake cannot be secured.
Such inconvenience is particularly remarkable when the bracket is made of a flexible material such as plastic.

  Then, the subject of this invention is providing the storage box which has this and the locking device at the time of an earthquake with more reliable locking at the time of an earthquake.

In order to achieve the above-mentioned problems, the solutions taken by the present invention are as follows.
That is, according to the present invention, a latch member is provided on a casing attached to a frame, a bracket is provided on a hinged door that is openable and closable at a front opening of the frame, and the latch member is attached to the bracket only during an earthquake. In the earthquake locking device, the bracket is provided with a pair of hooking portions, and the latch member is provided with a pair of hooking portions at a front end portion, and the latch having the pair of hooking portions. A shaft in the front-rear direction with respect to the casing so that the member can be switched between an engaged state where the member is hooked on each of the hooked portions and a non-engaged state where the member is disengaged from the hooked portions. It is characterized by being inserted so as to be rotatable around the center.

  In this case, the latch member having a pair of latching portions can be switched between an engaged state in which each latched portion is hooked and a non-engaged state in which each latched portion is disengaged. In addition, the latch member having a pair of latching portions is inserted into each of the latched portions of the bracket in the locked state at the time of the earthquake. As compared with a hook structure in which the protruding end portion of the latch member is fitted in a single recess formed in the bracket, the degree of hooking on the bracket increases.

The earthquake locking device according to the present invention can be employed in any of the following types (a) and (b).
(A) Non-contact type in which the latch member does not contact the bracket when the opening and closing of the hinged door is repeated during normal times other than an earthquake, and the latch member protrudes and is locked to the bracket only during an earthquake.
(B) A contact type in which the latch member repeatedly engages and disengages with the bracket even when the opening and closing of the hinged door is repeated during normal times other than an earthquake, and the engagement state of the latch member with the bracket is maintained only during an earthquake.

And when employ | adopting the locking device at the time of the earthquake which concerns on this invention as said contact type, what is necessary is just to set it as the structure provided with the following each member.
-A casing that is attached to the frame-A bracket that has a pair of hooked parts on both sides in the width direction and that is attached to a hinged door that can be opened and closed at the front opening of the frame-A pair of hooking parts at the front end And can be switched between an engagement state in which each of the latching portions is hooked on each of the latched portions and a non-engagement state in which the latching portions are disengaged from the latched portions. A rotary type latch member that is inserted into the casing so as to be rotatable about a longitudinal axis.When the hinged door is opened, the latch member is switched to a non-engaged state, and the hinged door is closed. A switching means for switching the latch member to the engaged state; and a lock means for holding the latch member in the engaged state when an earthquake shakes.

  As described above, according to the present invention, compared to a hook structure in which the protruding end portion of the latch member is fitted into one recess formed in the bracket, the hook with respect to the bracket is increased, so that the lock during an earthquake is more reliable. become.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the upper part of the front end of a storage box 1 having an earthquake locking function according to the present invention. This storage box 1 is used as a hanging cabinet of a kitchen. A box body (frame) 2 assembled in a square frame shape from a pair of left and right side plates, a top plate 2 and a bottom plate, and a front opening of the box body 3 And a pair of left and right hinged doors 4 for closing and opening the opening.

In the example shown in the figure, the upper and lower opening edges of the box body 3 are provided with rubber seal members 5 that contact the inner surface of the hinged door 4 to seal the hinged door 4, but this seal member 5 is omitted. You can also.
The pair of left and right hinged doors 4 are so-called double doors that are pivotally attached to the side plate of the box body 3 via hinges with springs so as to be rotatable inward and outward of the storage box 1. The hinge incorporates a winding spring that biases the hinged door 4 toward the opening side of the box body 3, and the hinged door 4 is always biased in the closing direction (right side in FIG. 1).

  As a hinge for urging the hinged door 4 in the closing direction, not only the spring type but also a cam type that moves the hinged door 4 in the closing direction by its own weight can be used. In addition, a known magnet catch is attached to the inner surface of the opening of the box body 3, and the metal plate provided on the inner surface of the hinged door 4 is attracted by the magnetic force of the magnet catch to urge the hinged door 4 toward the box body 3 side. You can also.

On the top plate 2 of the box body 3, the locking device body 8 of the earthquake locking device 7 that automatically prevents the pair of left and right hinged doors 4 from being opened due to shaking such as an earthquake corresponds to the pair of left and right hinged doors 4. A pair is attached. The earthquake locking device 7 mainly includes a locking device body 8 attached to the box body 3 side and a bracket 9 attached to the hinged door 4 side.
The bracket 40 includes a mounting plate 10 that is screwed to the inner surface of the hinged door 4 and a pair of upper and lower hooked portions 11 that protrude from the upper and lower ends of the mounting plate 10 in the closing direction of the hinged door 4. It is prepared as one. These hooked portions 11 are formed in an approximately L shape in a side view so that the tips thereof face each other.

  As shown in FIGS. 1 and 2, the lock device main body 1 includes a synthetic resin casing 12 attached to the lower surface of the front edge of the top plate 2 (the inner surface of the opening of the box main body 3), and the casing 12. A rotary latch member 13 rotatably inserted around the axial center in the front-rear direction (left-right direction in FIG. 1), and switching means 14 for rotating the latch member 13 in conjunction with the movement of the hinged door 4 in the opening / closing direction. And a lock means 15 for holding the latch member 13 in an engaged state when an earthquake shake occurs.

The casing 12 includes a case main body 17 having a substantially rectangular cross section that is screwed to the lower surface of the top plate 2, and a substantially circular cross section that protrudes from the rear end wall of the case main body 17 to the rear side (right side in FIG. 1). The guide cylinder part 18 is comprised.
The latch member 13 includes a hollow cylindrical portion 19 made of a cylindrical body that is rotatably passed through the front end wall of the casing 12, and a pair of latching portions 20 that are integrally provided at the front end of the hollow cylindrical portion 19. These latching portions 20 are projected in the radially outward direction of the hollow cylindrical portion 19 in a state opposite to each other.

The latch member 13 is immovable in the front-rear direction with respect to the casing 12 by fitting the circumferential groove 21 formed in the midway portion of the hollow cylinder portion 19 in the through hole of the front end wall of the casing 12. It is inserted so as to be rotatable around the axial center in the front-rear direction. For this reason, the latch member 13 is engaged with each latched portion 11 of the bracket 9 (the solid line state in FIG. 1), and is in a disengaged state in which the latch member 13 is disengaged from each latched portion 11 (the virtual state in FIG. 1). It is provided in the casing 12 so that it can be switched to any one of (Line state).
A switching rod 22, which is one of the constituent elements of the switching means 14, is inserted into the latch member 13. The switching rod 22 is made of a rod-like member that is longer than the entire length of the latch member 13 and is coaxial with the hollow cylinder portion 19 so as to be movable in the front-rear direction inside the hollow cylinder portion 19 of the casing 12. Is inserted.

The inside of the guide cylinder portion 18 of the casing 12 is formed in a hexagonal cross section, and a hexagonal contact plate 23 formed at the rear end of the switching rod 22 is inserted into the guide cylinder portion 18 in a non-rotating state. ing. For this reason, the switching rod 22 penetrates the inside of the latch member 13 in the axial direction so that the switching rod 22 is movable in the longitudinal direction with respect to the casing 12 and cannot be rotated around the axial center in the longitudinal direction. .
A cam mechanism 25 is provided in the case body 17 of the casing 12 to rotate the latch member 13 as the switching rod 22 moves in the front-rear direction.

The cam mechanism 25 includes a cam pin 26 projecting outward in the radial direction of the switching rod 22 and a helical cam groove 27 formed in the hollow cylinder portion 19 of the latch member 13. Is inserted.
For this reason, as shown by a solid line in FIG. 1, when the front end portion of the switching rod 22 is immersed in the latch member 13, the pair of latching portions 20 face in the vertical direction, and each latched portion 11 of the bracket 9 Get caught. On the other hand, as indicated by phantom lines in FIG. 1, when the front end portion of the switching rod 22 protrudes forward from the front end of the latch member 13, the pair of latching portions 20 face the horizontal direction and each latched portion of the bracket 9 is latched. Depart from part 11.

Further, as described above, since the hinged door 4 is biased in the closing direction by the hinge with spring, the switching rod 22 is inserted by the biasing force of the hinged door 4 in the closing direction, whereby the latch member 12 is engaged. It is designed to switch to.
On the other hand, a biasing member 28 that biases the switching rod 22 toward the protruding side is provided in the guide tube portion 19 of the casing 12, and this biasing member 28 switches with the rear end wall of the guide tube portion 18. It consists of a coil spring interposed between the contact plate 23 of the rod 22. Therefore, when the hinged door 4 is opened by the user, there is no pressing force against the front end portion of the switching rod 22, so that the switching rod 22 protrudes forward by the urging force of the urging member 28, and thereby the latch member 13 is not engaged. It is designed to switch to a combined state.

Therefore, in the earthquake locking device 7 of this embodiment, the switching means 14 is constituted by the switching rod 22, the cam mechanism 25, and the biasing member 28. The switching means 14 is latched when the hinged door 4 is opened. It has a function of switching the member 13 to the disengaged state and switching the latch member 13 to the engaged state when the hinged door 4 is closed.
In the present embodiment, a taper-shaped tapered surface 29 is formed on the back side of the latching portion 20 (the side that comes into contact with the latched portion 11). It is easy to switch to the engaged state.

The locking means 15 includes a rolling member 31 provided in the case body 17 of the casing 12 so as to be freely rollable in the front-rear direction, and a lock slider 32 that moves back and forth by the inertial force of the rolling member 31. ing.
Among these members, the rolling member 31 is made of a metal roller member housed in the case body 17 so that the axial center direction is in the left-right direction (the through direction in FIG. 1). It is placed on rolling step portions 33 formed on the left and right wall surfaces in the main body 17. The rolling step portion 33 is inclined so that the center portion in the front-rear direction is slightly lower than both ends in the same direction, whereby the roller member 31 is positioned at the center portion in the front-rear direction in the case body 17. Yes.

  The lock slider 32 is made of a U-shaped member that surrounds the hollow cylindrical portion 19 of the latch member 13, and has a storage recess 34 in which the roller member 31 is stored at the upper end portion. The lower end portion of the lock slider 32 is formed with a clearance groove 35 (see FIGS. 2 and 3) that is long in the circumferential direction and a pair of lock grooves 36 that communicate with the central portion of the clearance groove 35 from both the front and rear sides. ing. In addition, a lock piece 37 that fits into either the escape groove 35 or the lock groove 36 protrudes from the hollow cylinder portion 19 of the latch member 13.

  In normal times when no shaking such as an earthquake occurs, the rolling member 31 and the lock slider 32 are positioned at the center in the front-rear direction of the case body 17, and at this time, the lock piece 37 of the latch member 13 is in the escape groove 35. Therefore, the latch member 13 can freely rotate. On the other hand, when a shake such as an earthquake occurs, the lock slider 32 is biased in either the front-rear direction of the case body 17 due to the inertial force accompanying the rolling of the rolling member 21, whereby the lock piece 37 of the latch member 13 is locked into the lock groove 36. And the latch member 13 is prevented from rotating, and the latch member 13 is held in the engaged state.

According to the earthquake locking device 7 according to the above structure, the locking means 15 is not operated and the latch member 13 is freely rotatable in a normal time when no earthquake shaking occurs. Therefore, the latch member 13 can be engaged and disengaged from the bracket 9, and the user can open and close the hinged door 4.
On the other hand, when an abnormality such as an earthquake occurs, the locking means 15 is activated and the latch member 13 is held in the engaged state. The hinged portion 11 is hooked to prevent the opening of the hinged door 4, and as a result, stored items such as tableware in the storage box 1 are prevented from jumping out.
When the shaking such as an earthquake is stopped, the rolling member 33 constituting the locking means 15 returns to the central portion of the case body 17 and the latch member 13 is allowed to rotate again. The lock on is automatically released.

  At this time, according to the earthquake locking device 7 according to the present embodiment, the latch member 13 having the pair of latching portions 20 is engaged with the latched portions 11 and the latched portions. 11 so that it can be switched to any one of the non-engaged states disengaged from 11 so as to be rotatable around the axial center in the front-rear direction with respect to the casing 12. When the latch member 13 having the latching portion 20 is engaged with each latched portion 11 of the bracket 9 and the protruding end portion of the latch member 13 is fitted into one recess formed in the bracket 9. In comparison, the degree of catching on the bracket 9 is increased, and the locking at the time of an earthquake is more reliable.

The present invention is not limited to the above embodiment.
For example, in the illustrated embodiment, the case where the latch member 13 repeatedly engages and disengages with the bracket 9 even when the opening and closing of the hinged door is repeated normally is illustrated, but the present invention is a latch member only when an earthquake occurs. It is also possible to adopt a non-contact type in which 13 protrudes and is locked to the bracket 9.

It is side surface sectional drawing of the locking device at the time of an earthquake attached to the storage box. It is a plane sectional view of the locking device. It is a cross-sectional view of the locking device.

Explanation of symbols

1 Storage box 3 Box body (frame)
4 hinged door 7 earthquake locking device 9 bracket 11 hooked portion 12 casing 13 latch member 14 switching means 15 locking means 20 hooking portion

Claims (4)

A latch member is provided on a casing attached to the frame, and a bracket is provided on a hinged door provided to be openable and closable at a front opening of the frame so that the latch member is locked to the bracket only at the time of an earthquake. In an earthquake lock device,
The bracket is provided with a pair of hooked portions, a pair of hooking portions are provided at the front end of the latch member, and the latch members having the pair of hooking portions are respectively hooked on the hooked portions. It is inserted through the casing so as to be rotatable around the axial center in the front-rear direction so that it can be switched to either the engaged state or the non-engaged state in which it is disengaged from the respective latched portions. An earthquake locking device characterized by. A casing attached to the frame;
A bracket attached to a hinged door that has a pair of hooked portions on both sides in the width direction, and that can be opened and closed at the front opening of the frame;
One of the engagement state in which each of the latching portions is hooked on each of the latched portions and the non-engaged state of disengaging from each of the latched portions. A rotary-type latch member that is rotatably inserted about the axial center in the front-rear direction with respect to the casing so as to be switchable to the casing,
Switching means for switching the latch member to a disengaged state when the hinged door is open, and switching the lock member to an engaged state when the hinged door is closed;
Lock means for holding the latch member in an engaged state when an earthquake shake occurs;
Equipped with an earthquake lock device. A hinged door is provided at the front opening of the frame so that it can be freely opened and closed, a latch member is provided on a casing attached to the frame, a bracket is provided on the hinged door, and the latch member is locked to the bracket only during an earthquake. In the storage box with an earthquake lock function,
The bracket is provided with a pair of hooked portions, a pair of hooking portions are provided at the front end of the latch member, and the latch members having the pair of hooking portions are respectively hooked on the hooked portions. It is inserted through the casing so as to be rotatable around the axial center in the front-rear direction so that it can be switched to either the engaged state or the non-engaged state in which it is disengaged from the respective latched portions. A storage box with an earthquake lock function. A frame with an open front;
A hinged door that can be opened and closed at the front opening of the frame,
A casing attached to the frame;
A bracket having a pair of hooked portions on both sides in the width direction and attached to the hinged door;
One of the engagement state in which each of the latching portions is hooked on each of the latched portions and the non-engaged state of disengaging from each of the latched portions. A rotary-type latch member that is rotatably inserted about the axial center in the front-rear direction with respect to the casing so as to be switchable to the casing,
Switching means for switching the latch member to a disengaged state when the hinged door is open, and switching the lock member to an engaged state when the hinged door is closed;
Lock means for holding the latch member in an engaged state when an earthquake shake occurs;
A storage box with an earthquake lock function.

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