JPH09154657A - Device for preventing object from falling down - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent a shelf from falling down forward from occurring as a safety procedure, without the necessity to install connecting fittings on the shelf, a wall or a floor surface and make it possible to move the shelf easily without imparing wall or the floor surface by connecting fittings. SOLUTION: This device 1 for preventing an object from falling down is composed of a support leg for supporting a shelf 6, installing fittings for installing the support leg to the shelf 6 and ratchet pawls for moving the support leg only downward. Each of these ratchet pawls is installed at each of both forward corners on the inner part of a platform wheel 6a at the bottom of the shelf 6. A rack is formed on one of the lateral faces of the support leg. The ratchet pawls provided on the installing fittings in freely rocking manner allow the supporting leg to be slided downward but stop the supporting leg so that it is not moved upward, by engaging the ratchet pawls with the rack.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closet, a cupboard, a bookshelf, etc. used as furniture installed along a vertical wall, and a commercial product display shelf (collectively referred to as a shelf in this specification). ) Related to the fall prevention device that prevents the fall during an earthquake.

[0002]

2. Description of the Related Art When a wardrobe, a cupboard, etc. as furniture, or a commercial product display shelf, a bookcase, etc. installed along a wall falls down due to the shaking due to an earthquake, the contents inside do not just fall and are scattered. However, there is a danger that the person nearby will fall down directly, and therefore, a fall prevention device for fixing these to a wall or floor has been commercially available. The conventional fall prevention device is
Attach to the shelf body and wall or floor with screws etc.,
It was a connecting metal fitting type that connects both to prevent falling.
This conventional fall-prevention tool has to be attached to a position where the shelf and the wall (floor) are strong and strong, and also has to be attached so as not to come off securely. For this reason, if the shelf and the wall (floor) are structurally weak, or if the fall-prevention tool is difficult to attach, it cannot be attached. Also, it is troublesome to remove and reattach the shelves whenever moving shelves. And since most of them were attached by screws, the wall (floor) was scratched and the aesthetics were spoiled.

[0003]

SUMMARY OF THE INVENTION The problems to be solved by the present invention are to solve the above-mentioned problems, to prevent the shelf from falling forward, and to be safe. It is an object of the present invention to provide a fall prevention device that does not require attachment of a connecting fitting or the like, can easily move a shelf, and does not damage a wall surface or a floor surface.

[0004]

Means for Solving the Problems The constitution of the present invention which has solved the above problems is as follows: 1) A predetermined number of elongated columnar support legs are vertically arranged in the lower inner part near the floor surface of a shelf installed along a vertical wall. A mounting bracket, which is movably arranged and vertically penetrates through this support leg, is attached to the inside of the lower part of the shelf, and a rack is formed vertically on the side surface of the support leg. The ratchet pawl that restricts movement to the rack is installed in the mounting bracket by urging it so that it will engage with the rack, and the support legs are constantly urged downward. 2) For a shelf installed along a vertical wall A required number of vertically elongated pillar-shaped support legs are arranged in the lower inside near the floor so that they can move up and down, and a mounting bracket that vertically penetrates the support legs is installed inside the lower part of the shelf. A rack is formed vertically on the inner surface of the penetration. A fall-prevention device that urges the support leg so as to engage with the rack and restricts the upward movement of the support leg in a direction to engage the rack, and always urges the support leg downward. ) A fall prevention device according to 1) or 2), which is provided with a holding means for holding the support leg so that it does not move out of the lower surface of the shelf. 4) As the holding means, the support leg is a side. The fall prevention device according to 3), in which a set screw for tightening and stopping from one side is attached to a mounting member. 5) A foot portion that is sufficiently wider than the area of the lower surface of the support leg is tiltably attached to the lower portion of the support leg. 1) The fall prevention device according to any one of 4) 6) Two supporting legs are arranged in parallel at a predetermined interval, and the upper portions thereof are connected to each other, and mounting brackets supporting the respective supporting legs are connected to be integrated. Did, before 1) to 5) in anti-tip device according to any one.

[0005]

The shelf to which the fall prevention device of the present invention is attached is set apart from the wall for a predetermined period. In the normal state, the lower part of the shelf is in contact with the floor surface to support the weight of the shelf, and the supporting legs are lowered by the urging force to attach the lower part to the floor surface on which the shelf is installed. When the shelf shakes during the earthquake and the front side floats by leaning toward the wall, the support legs push down the ratchet pawl on the rack and urge it downward, projecting under the shelf and attaching the lower part to the floor. . When the shaking changes to the direction that tilts the shelf forward, it tries to return to the original posture by retracting the supporting legs from which the shelves project, but the ratchet pawl of the mounting bracket and the rack of the supporting legs engage and the supporting legs Is fixed so as not to move upward relative to the mounting bracket, the movement of the shelf is restrained, and the supporting legs support the shelf while tilting to the wall side, and prevent the shelf from tilting forward. While the shaking continues, if the shaking tilts the shelf toward the wall in this way, if the shelf tilts and the front floats, the supporting legs drop, and conversely if the shaking tilts the shelf forward, The state where the shelves are kept tilted toward the wall with the lowered support legs continues alternately, and eventually the shelves lean against the wall and are supported from the rear, and together with the support by the support legs, the shaking It is held stable so that it does not move. The shelves are safe because they do not fall forward, and the contents inside do not drop due to the inclination to the wall side.

In the structure in which the rack is provided on the mounting bracket and the ratchet pawl is provided on the support leg, when the rack shakes during an earthquake and the front side floats by tilting to the wall side, the support leg contacts the ratchet pawl with the rack of the mounting bracket. While pushing down, it is lowered by the downward urging force, protruding below the shelf and attaching the lower part to the floor. When the shaking changes to the direction that tilts the shelf forward,
She tries to return to its original position while retracting the support legs with protruding shelves, but the ratchet claws on the support legs engage with the racks of the mounting brackets, and the supporting legs are stopped so that they do not move upward relative to the mounting brackets. So, the movement of the shelf is restrained,
The support legs support the shelf while tilting to the wall side to prevent the shelf from tilting forward. Similarly to the above, the shelf is finally supported from the rear by leaning against the wall, and is stably held against shaking together with the support by the support legs.

In the structure provided with the holding means for keeping the support leg in the state where it does not protrude downward from the lower surface of the shelf, the holding means attached to the mounting bracket when the shelf is normally lifted and moved. Operate in advance before moving,
Hold the support legs and secure them against the mounting bracket. While lifting and moving the shelves, the supporting legs do not go down under the shelves and do not interfere with the moving work. Once the shelves are properly installed, replace the retention means and release the support legs to ensure movement during an earthquake.

In the structure in which the set screw is provided as the holding means for tightening and fixing the support leg, when moving the installation position of the shelf in the usual state, the set screw screwed into the mounting bracket is tightened in advance before moving. And hold the support legs to prevent them from moving with respect to the mounting bracket. While the rack is being lifted and moved, the support legs do not go down under the rack, which is convenient because it does not disturb the work. Once the shelves are in place, loosen the set screws to ensure that the support legs move in the event of an earthquake.

In the structure in which the foot portion is attached to the lower portion of the support leg, in a normal state, the support leg lowered by the urging force is stationary with the foot portion attached to the floor surface. When the shelf tilts toward the wall during an earthquake and the front of the shelf floats, the supporting legs fall by the urging force, protruding below the shelf and putting the feet on the floor. Even if the supporting legs are not perpendicular to the floor surface, the feet can freely tilt, the wide lower surface is firmly contacted with the floor surface, and when the direction of the swing changes to the direction to tilt the shelf forward, The support of the shelf by the support legs becomes more stable.

In the structure in which the two support legs and the mounting brackets arranged in parallel are integrated with each other, when the shelf shakes and the front part thereof floats during an earthquake, the support legs that are connected and integrated include a connecting portion. It goes down smoothly with its own weight increased, and it projects to the bottom of the shelf and its lower part is attached to the floor. As the contact area of the support legs to the floor surface increases, when the direction of shaking changes to the direction that tilts the shelf forward,
The support of the shelf by the support legs becomes more stable. Even if only one is placed in the center of the lower inner side of the shelf, the contact area with the floor surface is sufficiently wide, and it can be stably supported in a well-balanced manner in front, rear, left and right.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A shelf provided with a fall prevention device of the present invention is installed with a predetermined gap between it and a wall so that it can be leaned against a wall when an earthquake occurs.

The supporting legs of the fall prevention device of the present invention are strong enough to support the weight of the shelf, and have a shape that does not change with age such as rust and is smooth so that it can always operate in the event of an earthquake. Use material with sufficient weight to hang under the shelf. Particularly, stainless steel is preferable.
The shape of the support leg may be either a prism or a cylinder.

As a method of applying downward force to the support leg of the fall prevention device of the present invention, there are a method of weighting the support leg itself and a method of biasing the support leg downward by a spring. It is structurally simpler and more main to use Sasaki.

To the lower part of the supporting leg used in the present invention, a foot portion which can surely contact the floor surface by tilting is attached, or a rubber foot is attached to ensure the contact of the supporting leg with the floor surface. Is desirable.

In the present invention, the ratchet pawl that engages with the rack of the support leg or the mounting bracket engages the ratchet pawl with the rack so that the ratchet pawl can engage with the rack and stop the upward movement of the support leg even when the entire shelf is tilted. It is desirable to provide a weight that swings in the direction or a spring that biases the ratchet pawl toward the rack.

[0016]

An embodiment of the present invention will be described with reference to the drawings.
Example 1 is an example in which two are provided near the inner front both corners of the lower shelf, Example 2 is an example in which it is provided in the inner front center of the lower shelf, and Example 3 is the ratchet pawl and the rack position in Example 1. This is an example of replacement. 1 is an explanatory view showing a shelf to which the first embodiment is attached, FIG. 2 is a front view showing the first embodiment, FIG. 3 is a left side view showing the first embodiment, and FIG. 4 is an explanation showing an operating state of the first embodiment. FIG. 5 is an explanatory diagram showing a shelf holding state according to the first embodiment,
6 is an explanatory view showing another example of the support leg of the first embodiment, FIG. 7 is an explanatory view showing another example of the mounting bracket and the ratchet pawl of the first embodiment, and FIG. 8 is a front view showing the second embodiment. FIG. 9 is an explanatory view showing the mounting position on the shelf of the second embodiment, and FIG. 10 is the third embodiment.
FIG. 4 is a left side view showing a part of which is cut away.

The fall prevention device 1 of the first embodiment mainly comprises a support leg 2 for supporting a shelf 6, a mounting bracket 3 for mounting the support leg 2 on the shelf 6, and a ratchet pawl 4 for moving the support leg 2 only downward. It is used as a part and is the bottom wheel 6a of the shelf 6.
, Two are provided near the inner front both corners. Shelf 6
The supporting leg 2 that supports is a prismatic type made of stainless steel that has sufficient strength and is hard to change the state, and can be moved up and down in the vertical direction to the stainless steel mounting bracket 3 that is securely screwed to the base 6a. Has been inserted into. At the uppermost portion of the support leg 2, a retainer 2d for preventing the support leg 2 from coming off the attachment fitting 3 is attached with a screw 2e. On the other hand, at the lowermost part of the support leg 2, a foot portion 2b that supports the shelf 6 stably while ensuring a sufficient contact area even if the floor surface 8 and the support leg 2 are not vertical is tiltably attached. A rack 2a is formed on the surface of the support leg 2 facing the center of the base wheel 6a. By engaging with the rack 2a, the support leg 2 is allowed to slide downward, but does not move upward. A ratchet pawl 4 for stopping is attached to the mounting bracket 3 so as to be swingable. A weight 4a is attached to the ratchet pawl 4 so that the ratchet pawl 4 is biased in a direction to engage with the rack 2a even when the shelf 6 is tilted. In addition, a set screw 5 for fixing the support leg 2 to the mounting bracket 3 by laterally tightening the support leg 2 when it is not desired to lower the support leg 2 when the shelf 6 is lifted for movement.
It is provided by screwing.

As another example of the support leg 2 of the first embodiment, an example in which a spring 9 for urging the support leg 2 itself downward is attached between the support leg 2 and the attachment fitting 3 is shown (see FIG. 6). The biasing force of the spring 9 is the shelf 6
This is a mechanism in which the support leg 2 is smoothly lowered along with the weight of the support leg 2 without moving the support leg 2.

Shelf 6 to which the fall prevention device 1 of Embodiment 1 is attached
Is installed about 5 cm away from the wall 7. In the normal state, the weight of the shelf 6 is entirely supported by the pedestal 6a, and the supporting legs 2 are lowered by their own weight, and the legs 2b are attached to the floor surface 8 and remain stationary. When the shelf 6 shakes at the time of the earthquake and the front is floated by tilting toward the wall 7 side, the supporting leg 2 is lowered by its own weight while pushing and moving the ratchet pawl 4 with the rack 2a, and it goes out under the base wheel 6a to move the foot 2b to the floor. It becomes the state attached to 8. When the direction of shaking changes to the direction in which the shelf 6 is tilted forward, the shelf 6 tries to retract the support leg 2 into the pedestal 6a and returns to the original state, but due to the engagement of the ratchet pawl 4 and the rack 2a, this motion Since it can be stopped, the support leg 2 supports the shelf 6 tilted toward the wall 7 side as it is, and the center of gravity of the shelf 6 is left displaced toward the wall 7 side to prevent the shelf 6 from tilting forward. In this way, when the shaking is in the direction in which the shelf 6 is tilted toward the wall 7, the support leg 2 is lowered by the amount of the floating front of the shelf 6, and in the case of the shaking that tries to tilt the opposite shelf 6 forward, Shelf 6 with this lowered support leg 2
Keeps tilting toward the wall 7 side,
Eventually, the shelf 6 is hung by the wall 7 and does not move forward due to the support legs 2, so that the shelf 6 is supported from the front and the rear and is stably held against shaking of the earthquake. . The shelf 6 is safe without tilting to the front side, and there is no concern that the contents inside will fall.

When moving the installation position of the shelf 6 in the usual state, if the shelf 6 is lifted up as it is, the supporting leg 2 lowers and interferes with the work. Tighten the screw 5 to hold the support leg 2 so that it does not move, and prevent the support leg 2 from coming down. After the movement, when installed in the correct position, loosen the setscrew 5 so that the support leg 2 will surely lower during an earthquake.

As another example of the mounting bracket 3 and the ratchet pawl 4 of the first embodiment, the fulcrum position for mounting the ratchet pawl 4 on the mounting bracket 3 is changed so that the ratchet pawl 4 becomes the rack 2a by the weight of the ratchet pawl 4 itself. An example is shown in which the weight is not required so that the weight is always biased in the engaging direction (see FIG. 7). Into the gap between the ratchet pawl 4 and the pawl hole 3b of the mounting bracket 3, a pawl fixing piece 11 for holding the ratchet pawl 4 in a state of being engaged with the rack 2a is detachably inserted, and the supporting leg 2 is lowered when the shelf 6 is moved. It is a holding means to prevent it from happening.

In the fall prevention device 1 of the second embodiment, two devices similar to those of the first embodiment are arranged laterally at a predetermined interval, the upper portions of the support legs 2 are connected to each other, and the respective mounting fittings 3 are integrated. It has a shape and is provided in the center inside the front of the rack 6a of the shelf 6 (see FIGS. 8 and 9). The connecting portion 2c of the support leg 2 has a weighted structure, and the weight of the support leg 2 is increased so that the support leg 2 can be smoothly lowered during an earthquake. The contact area of the support leg 2 with the floor surface 8 is wide, and the shelf 6 can be stably supported in a well-balanced manner with only one at the front center of the pedestal 6a. Connecting part 2c
Other than that, the constitutions and functions of the support leg 2, ratchet pawl 4 and set screw 5 are the same as in the first embodiment.

In the fall prevention device 1 of the third embodiment, the positions of the rack 2a and the ratchet pawl 4 in the first embodiment are replaced with the mounting bracket 3 for the rack 2a and the support leg 2 for the ratchet pawl 4 ( (See FIG. 10). When the support leg 2 moves downward, the ratchet pawl 4 urged to the rack 2a side by the spring 10 does not engage with the rack 2a even though the ratchet pawl 4 is in contact with the rack 2a. When trying to move upward, the ratchet pawl 4 moves to the rack 2
It is a mechanism that engages with a and stops the movement. Rack 2a
The structure other than the part related to the ratchet pawl 4 and the function of supporting the shelf 6 in the event of an earthquake are the same as in the first embodiment.

[0024]

According to the present invention, by adopting the above-mentioned structure, the shelf can be stably held without being tilted forward against shaking due to an earthquake, and the contents inside the shelf will not fall forward. , It is safe even if there is a person ahead. Further, it is convenient to move the shelves easily because it is not necessary to attach connecting metal fittings or the like to the wall surface or the floor surface, and processing scratches for mounting on the wall surface or the floor surface are not created, which does not spoil the appearance.

If a structure is provided in which holding means is provided to keep the support legs that are not protruding below the lower surface of the shelf as they are, the support legs are fixed so as not to be lowered by the holding means when the shelf is lifted and moved. This makes it easy to work without the supporting legs getting in the way.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a shelf to which a first embodiment is attached.

FIG. 2 is a front view showing the first embodiment.

FIG. 3 is a left side view showing the first embodiment.

FIG. 4 is an explanatory diagram showing an operating state of the first embodiment.

FIG. 5 is an explanatory diagram showing a shelf holding state according to the first embodiment.

FIG. 6 is an explanatory diagram showing another example of the support leg of the first embodiment.

FIG. 7 is an explanatory view showing another example of the mounting member and the ratchet pawl of the first embodiment.

FIG. 8 is a front view showing a second embodiment.

FIG. 9 is an explanatory diagram showing a mounting position on a shelf according to a second embodiment.

FIG. 10 is a partially cutaway left side view showing a third embodiment.

[Explanation of symbols]

 1 fall prevention device 2 support leg 2a rack 2b foot 2c connecting part 2d retaining 2e screw 3 mounting bracket 3a guide hole 3b pawl hole 3c mounting part 3d wood screw 4 ratchet pawl 4a weight 5 set screw 6 shelf 6a wheel 7 wall 8 Floor 9 Spring 10 Spring 11 Pawl fixing piece

Claims (6)

[Claims] 1. A required number of slender columnar support legs are vertically movably arranged in front of a lower inner side near a floor surface of a shelf installed along a vertical wall, and the support legs are vertically movably penetrated. Attach the mounting bracket to the inside of the lower part of the shelf, form a rack on the side of the support leg in the vertical direction, and engage the racket with the ratchet pawl that engages with this rack and restricts the upward movement of the support leg. A fall prevention device that is urged and installed, and the support legs are always urged downward. 2. A required number of slender columnar support legs are vertically movably arranged in front of a lower inner side near a floor surface of a shelf installed along a vertical wall, and the support legs are vertically movably penetrated. Attach the mounting bracket to the inside of the lower part of the shelf, form a rack vertically on the inside of the support leg penetration part of the mounting bracket, and use the ratchet pawl on the support leg to engage the rack and limit the upward movement of the support leg. A fall prevention device that is urged in a direction to engage with the support legs and always urges the support legs downward. 3. The fall prevention device according to claim 1, further comprising holding means for holding the support leg in a state where it does not protrude downward from the lower surface of the shelf so as not to move. 4. The fall prevention device according to claim 3, wherein as the holding means, a set screw is attached to the mounting member to clamp the support leg by being laterally tightened. 5. The foot portion, which is sufficiently wider than the area of the lower surface of the support leg, is tiltably attached to the lower portion of the support leg.
Any of the fall prevention devices described. 6. The support legs are arranged in parallel at a predetermined interval and are connected to each other at an upper part thereof, and mounting brackets for supporting the respective support legs are connected to be integrated.
5. The fall prevention device according to any one of 5.