JP6868266B2 - Fall prevention device - Google Patents

Description

The present invention relates to a fall prevention device for furniture, and more specifically, to a fall prevention device for the purpose of preventing the furniture from falling in the forward direction.

Conventionally, as a method of preventing the furniture from falling forward due to the occurrence of an earthquake, a method of fixing the furniture and the wall surface or the like with metal fittings, a method of interposing a tension rod between the furniture and the wall surface or the like has been adopted. ..

However, the method of fixing with metal fittings has a drawback that the construction work becomes large-scale and the cost required for the construction work increases. Also, depending on the material of the furniture, it may be difficult to fix it.
On the other hand, the method of interposing a tension rod or the like has a drawback that the fixing force is weak and it cannot withstand a large tremor. Moreover, if the strength of the ceiling or wall is weak, it cannot be adopted.

Therefore, there is a method of installing a pedestal under the furniture and tilting the furniture backward at the time of shaking to prevent the furniture from tipping over regardless of the material of the furniture and the strength of the wall (for example, Patent Document 1, 2).

JP-A-2002-265014 Registered Utility Model No. 3017616

However, with the fall prevention device as described in Patent Documents 1 and 2, although the furniture can be prevented from tipping forward, the inclination angle cannot be adjusted stepwise. There are large and small earthquakes, but with these devices, there are only two choices, "whether to tilt the furniture backwards or not", so even if it is a small earthquake, the furniture will tilt significantly. turn into. Then, there is a risk that the furniture or the contents of the furniture may be damaged or pop out due to a strong impact.

Therefore, the present invention has been made in view of the above problems, and one of the objects of the present invention is to balance the center of gravity of the furniture by suspending the furniture at the time of an earthquake. It is to provide a fall prevention device that enables the furniture to be tilted stepwise according to the size of the furniture and can prevent the furniture from tipping forward.

In order to achieve the above object, the present invention comprises at least the following configurations or carries out procedures. In the following description, reference numerals and the like shown in the drawings may be added to facilitate understanding of the present invention, but each component of the present invention is limited to those shown in the drawings. It should be broadly interpreted to the extent that those skilled in the art can technically understand it.

The fall prevention device according to the present invention is a fall prevention device that tilts the furniture backward to prevent the furniture from falling forward, and the pulley of the furniture is provided with a pulley provided on the wall surface or the ceiling as a fulcrum. A suspension portion for suspending the furniture at a first point arranged on the top surface and a second point arranged in the rearward direction from the first point, a lower pedestal portion arranged on the floor, and the furniture. A pedestal portion which is arranged on the bottom surface of the pedestal and slides forward while tilting on the lower pedestal portion, and the upper pedestal portion regulates the swinging back of the upper pedestal portion in the rear direction. The lower pedestal portion has a plurality of first regulating surfaces that engage with the first regulating portion in the front-rear direction, and the hanging portion has an inclination of the upper pedestal portion. Correspondingly, the ratio of the distance from the pulley to the first point and the distance from the pulley to the second point is changed.
With such a configuration, the fall prevention device according to the present invention enables the furniture to be tilted stepwise according to the magnitude of the vibration while balancing the center of gravity of the furniture by suspending the furniture in the event of an earthquake. It is possible to prevent forward movement.

Further, preferably, the pedestal portion has a first sliding body that moves when the pedestal portion slides in the forward direction, and when the pedestal portion intends to swing back in the rear direction. Is characterized in that a part of the first sliding body engages with any of the plurality of first regulation surfaces.
With such a configuration, in the fall prevention device according to the present invention, a part of the first sliding body engages with any one of the plurality of first regulation surfaces while sliding the lower part of the furniture forward. Therefore, it is possible to prevent the rocking back stepwise. As a result, it is possible to gradually incline the furniture according to the magnitude of the vibration.

Further, preferably, the upper pedestal portion further includes a second regulating portion for restricting the furniture from protruding in the forward direction, and the lower pedestal portion engages with the second regulating portion. It is characterized by further providing the regulatory aspect of 2.
With such a configuration, the fall prevention device according to the present invention can prevent the furniture from popping out in the forward direction.

Further, preferably, the pedestal portion has a second sliding body that moves when the pedestal portion slides in the forward direction, and a part of the second sliding body is the second regulation. It is characterized by engaging with a surface.
With such a configuration, the fall prevention device according to the present invention can more reliably prevent the furniture from popping out in the forward direction while sliding the lower part of the furniture in the forward direction.

Further, preferably, at least the upper pedestal portion or the lower pedestal portion engages with the first regulating portion and the first regulating surface when the upper pedestal portion slides forward from the initial position. It is characterized by being provided with a release mechanism that enables the release of the combination.
Here, the initial position refers to a position in which the furniture stands up substantially vertically, for example, before the occurrence of a vibration due to an earthquake or the like.
With such a configuration, the fall prevention device according to the present invention can easily return to the initial position even when the furniture slides forward due to vibration.

Further, preferably, a connecting member having a force for connecting the upper pedestal portion and the lower pedestal portion and pulling the upper pedestal portion in the rear direction when the upper pedestal portion slides in the forward direction is provided. , Further prepared.
With such a configuration, in the fall prevention device according to the present invention, even when the furniture slides forward due to the vibration, the upper pedestal portion and the lower pedestal portion are not separated by the connecting member, and further, the upper pedestal portion Is stretched in the backward direction, so that the state can be stabilized even if the pedestal portion is inclined.

Further, preferably, at least a part of the first sliding body is made of metal.
With such a configuration, it is possible to prevent damage to the first sliding body even when a strong impact is generated.

Similarly, it is more preferable that at least a part of the second sliding body is made of metal, and in this case, it is possible to prevent the second sliding body from being damaged even when a strong impact is generated. ..

Further, preferably, at least a part of the first regulating portion or the first regulating surface is an elastic member.
With such a configuration, the fall prevention device according to the present invention can reduce the impact when preventing the furniture from swinging back.

Similarly, at least a part of the second regulating portion or the second regulating surface is more preferably an elastic member, and reduces an impact when preventing the furniture from popping out in the forward direction. It becomes possible.

As described above, according to the present invention, by suspending the furniture in the event of an earthquake, the center of gravity of the furniture can be balanced, and the furniture can be tilted stepwise according to the magnitude of the vibration, and the furniture can be tilted forward. It can be prevented.

It is a side view which shows the initial position of the fall prevention device 100 which concerns on one Embodiment of this invention. It is a side view which shows the state which the pedestal part 120 slid forward in the fall prevention device 100 which concerns on one Embodiment of this invention. It is sectional drawing which shows a mode that the upper pedestal part 120 slides forward on the lower pedestal part 130 in the fall prevention device 100 which concerns on one Embodiment of this invention. It is a bottom view which shows the pedestal part 120 in the fall prevention device 100 which concerns on one Embodiment of this invention. It is a figure which shows the connecting member 140 which connects the upper pedestal part 120 and the lower pedestal part 130 in the fall prevention device 100 which concerns on one Embodiment of this invention. It is sectional drawing which shows the modification of the pedestal part 120 in the fall prevention device 100 which concerns on one Embodiment of this invention.

Hereinafter, each embodiment of the present invention will be specifically described with reference to the drawings. It should be noted that the embodiments described below are merely examples of specific examples for carrying out the present invention, and do not limit the interpretation of the present invention.
<One Embodiment>

FIG. 1 is a side view showing an initial position of a fall prevention device 100 according to an embodiment of the present invention. In FIG. 1, the fall prevention device 100 includes a hanging portion 110, an upper pedestal portion 120, and a lower pedestal portion 130. Further, the suspension portion 110 is rearward from the pulley (fulcrum) 111 provided on the wall surface 10, the pulley (first point) 112 provided on the top surface of the furniture 20, and the pulley (first point) 112. The pulley (second point) 113 provided and the wire 114 are provided.

The upper pedestal portion 120 is arranged on the bottom surface of the furniture 20, and the lower pedestal portion 130 is arranged on the floor. The upper pedestal portion 120 has a boat shape that gently curves from the central portion to the end portion, and the lower pedestal portion 130 has an inverted boat shape corresponding to the boat shape of the upper pedestal portion 120. There is. Since both pedestals have such a shape, when an earthquake occurs, the upper pedestal 120 slides forward while tilting on the lower pedestal 130. That is, the furniture 20 mounted on the pedestal portion 120 and the pedestal portion 120 slides forward along the curves of both pedestals.

FIG. 2 is a side view showing a state in which the gantry portion 120 slides forward in the fall prevention device 100 according to the embodiment of the present invention. When the upper pedestal portion 120 slides forward, the hanging portion 110 adjusts the center of gravity of the furniture 20. In FIG. 2, when the pulley (fulcrum) 111 is referred to as point A, the pulley (first point) 112 is referred to as point B, and the pulley (second point) 113 is referred to as point C, the lower end of the furniture 20 is directed upward in the front due to the occurrence of vibration. When sliding to, point C will be lowered from the initial position. Then, as compared with the state in FIG. 1, the wire between ACs becomes longer and the wire between AB becomes shorter. In this way, the center of gravity of the furniture 20 is adjusted by changing the ratio of the length of the wire between AB and the length of the wire between AC by using the pulley (fulcrum) 111.

Although the pulley (fulcrum) 111 is installed on the wall surface 10 in FIGS. 1 and 2, the pulley (fulcrum) 111 is not limited to this, and may be installed on the ceiling or other fixable place, for example. ..

Further, although the three pulleys 111 to 113 were used here, it is not always necessary to use the three pulleys. For example, at the first and second points, the pulleys are not used and the wire is simply applied to the top surface of the furniture 20. Both ends of 114 may be connected to each other. Further, when an earthquake occurs, it is preferable to use a member having a slight elasticity or elasticity for the wire 114 in order to mitigate the impact (effect) due to the vibration.

FIG. 3 is a cross-sectional view showing a state in which the upper pedestal portion 120 slides forward on the lower pedestal portion 130 in the fall prevention device 100 according to the embodiment of the present invention. The upper pedestal portion 120 includes an upper pedestal main body 121, a first sliding body 122, and a second sliding body 123. The lower pedestal portion 130 includes a lower pedestal main body 131, a plurality of first regulation surfaces 132, and a second regulation surface 133.

The upper pedestal main body 121 has a boat shape that gently curves from the central portion to the end portion, and is installed on the bottom surface of the furniture 20. The upper pedestal main body 121 slides on the lower pedestal portion 130, but a part of the contact surface side with the lower pedestal portion 130 has a concave shape, and the first sliding body 122 and the second sliding body 122 and the second sliding body portion 122 are contained therein. It has a sliding body 123.

The lower pedestal main body 131 has an inverted boat shape corresponding to the boat shape of the upper pedestal main body 121, and is arranged on the floor. The upper pedestal portion 120 on which the furniture 20 is placed slides on the upper surface of the lower pedestal main body 131, but the upper pedestal portion 120 is slid in order to prevent the upper pedestal portion 120 from swinging back in the rear direction. It has a plurality of recesses in the moving direction (front-rear direction), and a first regulation surface 132 is formed in each of the plurality of recesses. Further, the lower pedestal main body 131 constitutes a second regulation surface 133 in order to prevent the upper pedestal portion 120 from protruding in the forward direction.

More specifically, the first sliding body 122 is movable when the furniture 20 mounted on the pedestal portion 120 and the pedestal portion 120 slides in the forward direction. On the other hand, when the pedestal portion 120 and the furniture 20 attempt to swing back in the rear direction, a part of the first sliding body 122 serves as a first regulating portion and is one of a plurality of first regulating surfaces 132. Engage in. This prevents the upper pedestal portion 120 and the furniture 20 from swinging back in the rear direction.

Further, the second sliding body 123 also moves up to a predetermined distance when the furniture 20 mounted on the upper pedestal portion 120 and the upper pedestal portion 120 slides in the forward direction, but the upper pedestal portion 120 and the furniture A part of the second sliding body 123 engages with the second regulating surface 133 as a second regulating portion so that the 20 does not slide by a predetermined distance or more. As a result, the upper pedestal portion 120 and the furniture 20 are prevented from popping out in the forward direction.

When a vibration occurs, the upper pedestal portion 120 slides forward on the lower pedestal portion 130, but the sliding distance of the upper pedestal portion 120 also differs depending on the magnitude of the vibration. When the vibration is small, the gantry 120 slides slightly forward. At that time, the rearward swinging back of the pedestal portion 120 is prevented by engaging the first regulating surface 132 provided at the rearmost end with the first sliding body 122 (FIG. 3 (FIG. 3). b)).

If the vibration is large, the pedestal 120 slides further forward. At that time, the rearward swinging back of the gantry portion 120 is prevented by engaging the first regulating surface 132, which is the second or third from the rear, with the first sliding body 122 (FIG. 3). (C) (d)).

When the vibration is further large, the second sliding body 123 engages with the second regulation surface 133 to move the upper pedestal main body 121 (and the furniture 20 mounted on the upper pedestal portion 120) in the forward direction. Control popping out (Fig. 3 (e)).

As described above, since the lower pedestal portion 130 is configured with a plurality of first regulating surfaces 132 in the front-rear direction, the first sliding body 122 in the upper pedestal portion 120 serves as the first regulating portion, and the magnitude of the vibration is large. Accordingly, it engages stepwise with any one of the plurality of first regulatory surfaces 132. As a result, it is possible to realize a stepwise inclination of the furniture 20 according to the magnitude of the vibration.

Further, when a strong vibration occurs and the gantry portion 120 and the furniture 20 move in the forward direction, the second sliding body 123 engages with the second regulation surface 133 as the second regulation portion. It is possible to prevent the upper base portion 120 from moving further forward.

As shown in FIG. 3, each end of the upper pedestal portion 120 is provided with an upper pedestal convex portion 124 and an upper pedestal concave portion 125, and each end of the lower pedestal portion 130 is provided with a lower pedestal convex portion 134. And the lower pedestal recess 135 may be provided. By providing a convex portion and a concave portion in each of the upper pedestal portion 120 and the lower pedestal portion 130, both can be combined. By adopting such a configuration, the stability of the upper pedestal portion 120 and the lower pedestal portion 130 at the initial position (FIG. 3A) is ensured, and further, the upper pedestal portion 120 and the lower pedestal portion 130 are combined. It will be easier to carry in combination, and you will also get a sense of unity in appearance.

Further, here, the convex portion and the concave portion are provided so that the upper pedestal portion 120 and the lower pedestal portion 130 do not shift in the vertical direction, but the present invention is not limited to this, and for example, the lower pedestal portion 130 is displaced in the lateral direction. A configuration may be provided in which a convex portion and a concave portion are provided so as not to be present. Considering the pitching caused by the occurrence of an earthquake, a configuration that shifts in the vertical direction is preferable.

The lower pedestal main body 131 may be fixed to the floor, but may be simply placed on the floor so as to slide on the floor depending on the magnitude of the vibration caused by the earthquake. If the lower pedestal main body 131 is fixed to the floor, it will be stable when the furniture 20 is set, but the floor and the lower pedestal main body 131 may be destroyed when a large vibration is received. Whether to simply place the lower pedestal body 131 on the floor or to fix it on the floor can be appropriately selected according to various situations such as the place where the furniture 20 is installed, the size and weight of the furniture 20, and the like. Good.

FIG. 4 is a bottom view showing the pedestal portion 120 in the fall prevention device 100 according to the embodiment of the present invention. The bottom surface of the upper pedestal portion 120 is a surface that comes into contact with the lower pedestal portion 130, and the first sliding body 122 and the second sliding body 123 are arranged in a cavity provided in the upper pedestal main body 121. Some of them are configured to be exposed from the bottom surface. Each sliding body is provided with a through hole, and a shaft provided across the gantry main body 121 is configured to pass through the through hole.

The first sliding body 122 and the second sliding body 123 may be basically made of any material, but at least they must be lowered downward by their own weight, so that they have a certain weight. is necessary. Further, a vibration occurs and the gantry portion 120 slides forward, and a part of the first sliding body 122 and the second sliding body 123 serves as the first regulating portion and the second regulating portion. When engaged with the regulation surface 132 and the second regulation surface 133, the strength must be at least not damaged. For the above reasons, it is desirable to use iron or other metal for the first sliding body 122 and the second sliding body 123.

Further, the plurality of first regulating surfaces 132 and the second regulating surface 133 of the lower pedestal portion 130 may be basically made of any material, but the first sliding body 122 and the second regulating surface 132 may be formed of any material. Since a part of the sliding body 123 may collide as the first regulating portion and the second regulating portion, it is desirable to use an elastic body having high impact absorption efficiency. Further, the plurality of first regulation surfaces 132 and the second regulation surface 133 may be configured as separate members from the lower pedestal main body 131.

Next, a case where the pedestal portion 120 and the furniture 20 are slid forward and tilted due to the occurrence of an earthquake and then returned to their original positions will be described. For example, in the state shown in FIGS. 3 (b) to 3 (d), the gantry portion 120 cannot be returned to the original position (FIG. 3 (a)) as it is. This is because the first sliding body 122 in the upper pedestal portion 120 is engaged with the first regulating surface 132 in the lower pedestal portion 130 as the first regulating portion.

In order to disengage the first sliding body 122 in the upper pedestal portion 120 and the first regulating surface 132 in the lower pedestal portion 130, the first sliding body 122 that is lowered downward by its own weight is moved. You can lift it upwards. As a mechanism for lifting the first sliding body 122 upward, for example, a thread passing through the pedestal main body 121 and the first sliding body 122 is arranged, and when the thread is pulled from the outside, the first sliding body 122 is released. It suffices to have a mechanism to lift it upward. As a result, the first sliding body 122 is lifted upward to disengage the engagement with the first regulation surface 132, and the upper pedestal portion 120 and the furniture 20 are placed in the initial positions (original position FIG. 3A). ) Can be restored.

The mechanism for lifting the first sliding body 122 upward is not limited to a mechanism for pulling from the outside using a thread, and may be realized by pressing or switching a button.

FIG. 5 is a diagram showing a connecting member 140 that connects the upper pedestal portion 120 and the lower pedestal portion 130 in the fall prevention device 100 according to the embodiment of the present invention. In FIG. 5, the upper pedestal portion 120 and the lower pedestal portion 130 are connected by a connecting member 140 having a leaf spring, and the connecting member 140 stretches the upper pedestal portion 120 in the rear direction.

When the upper pedestal portion 120 slides in the forward direction, the connecting member 140 expands, but a force for pulling the upper pedestal portion 120 in the rear direction always acts on the upper pedestal portion 120. As a result, even when the furniture 20 slides forward due to the vibration, the upper pedestal portion 120 and the lower pedestal portion 130 are not separated by the connecting member 140, and even if the upper pedestal portion 120 is tilted, the furniture 20 is tilted. The state can be stabilized.

The connecting member 140 is not limited to a leaf spring, and may be, for example, a coil spring, and it goes without saying that the same effect can be obtained in that case as well. Further, the connecting member 140 may be provided only on one side surface of the gantry portion, but may be provided on both side surfaces of the gantry portion. Further, the connecting member 140 may have a function as a constant load spring.
<Other variants>

FIG. 6 is a cross-sectional view showing a modified example of the gantry portion 120 in the fall prevention device 100 according to the embodiment of the present invention. As shown in this figure, the first sliding body 122 and the second sliding body 123 may be provided integrally with one member.

As described above, according to the fall prevention device 100 according to the embodiment of the present invention, the furniture 20 is suspended in the event of an earthquake to balance the center of gravity of the furniture 20 and to match the magnitude of the vibration. The furniture 20 can be tilted in stages to prevent the furniture 20 from tipping forward.

The specific description of each embodiment of the present invention has been described above. The above description is merely an embodiment, and the scope of the present invention is not limited to this one embodiment, and is broadly interpreted to a range that can be grasped by those skilled in the art.

The present invention can be used for a furniture fall prevention device, and more specifically, a furniture fall prevention device for the purpose of preventing the furniture from falling in the forward direction.

10 Wall surface 20 Furniture 100 Fall prevention device 110 Suspension part 111 Pulley (fulcrum)
112 Pulley (1st point)
113 Pulley (2nd point)
114 Wire 120 Upper pedestal 121 Upper pedestal body 122 First sliding body 123 Second sliding body 124 Upper pedestal convex part 125 Upper pedestal concave part 130 Lower pedestal part 131 Lower pedestal body 132 First regulation surface 133 Second regulation Surface 134 Lower pedestal convex part 135 Lower pedestal concave part 140 Connecting member

Claims (8)

A fall prevention device that tilts furniture backwards to prevent the furniture from tipping forward.
Suspension that suspends the furniture at a first point arranged on the top surface of the furniture and a second point arranged behind the first point with a pulley provided on a wall surface or a ceiling as a fulcrum. Department and
The lower pedestal placed on the floor and
It is provided with an upper pedestal portion that is arranged on the bottom surface of the furniture and slides forward while tilting on the lower pedestal portion.
The pedestal portion has a first regulating portion that regulates the swinging back of the pedestal portion in the rear direction.
The lower pedestal portion has a plurality of first regulating surfaces that engage with the first regulating portion in the front-rear direction.
The suspension portion is characterized in that the ratio of the distance from the pulley to the first point and the distance from the pulley to the second point is changed according to the inclination of the mount portion. Fall prevention device. The first regulating portion of the pedestal portion has a first sliding body that moves when the pedestal portion slides in the forward direction, and the pedestal portion intends to swing back in the rear direction. The fall prevention device according to claim 1, wherein a part of the first sliding body is engaged with any one of the plurality of first regulation surfaces. The pedestal portion further includes a second regulating portion for restricting the furniture from jumping out in the forward direction.
The fall prevention device according to claim 1 or 2, wherein the lower pedestal portion further includes a second regulating surface that engages with the second regulating portion. The pedestal portion has a second sliding body that moves when the pedestal portion slides in the forward direction, and a part of the second sliding body engages with the second regulation surface. The fall prevention device according to claim 3, wherein the device is characterized by the above. At least the upper pedestal portion or the lower pedestal portion can be disengaged from the first regulating portion and the first regulating surface when the upper pedestal portion slides forward from the initial position. The fall prevention device according to any one of claims 1 to 4, wherein the release mechanism is provided. In addition to connecting the upper pedestal portion and the lower pedestal portion, a connecting member having a force for pulling the upper pedestal portion in the rear direction when the upper pedestal portion slides in the forward direction is further provided. The fall prevention device according to any one of claims 1 to 5, which is characterized. The fall prevention device according to claim 2, wherein at least a part of the first sliding body is made of metal. The fall prevention device according to any one of claims 1 to 7, wherein at least a part of the first regulating portion or the first regulating surface is an elastic member.

Images