JP3069588B2 - Furniture fall prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furniture fall prevention device which is effective as a safety measure against strong vibration such as an earthquake.

[0002]

2. Description of the Related Art Conventionally, there is a fall prevention device as one of earthquake countermeasures for furniture having a structure that cannot be fixed to a house or the like such as a chest of drawers. As a conventional typical fall prevention device, furniture is arranged in an unconstrained state so as to be able to linearly move with respect to the floor surface, and a tension spring and a tension spring are provided between the furniture and a fixed frame fixed to the floor surface. It is known that a damping mechanism is interposed so that when the furniture rolls, the furniture absorbs the shocking vibration and automatically returns to a predetermined position after the vibration. .

[0003]

However, in such a conventional apparatus, when the amplitude of the rolling motion becomes large, the furniture collides with a fixed frame to forcibly stop further rolling of the furniture. Therefore, it is not possible to expect a sufficient seismic isolation function. In addition, the fixing frame must be fixed to the floor surface, and a work of interposing a tension spring and a damping mechanism between the fixing frame and the bottom of the furniture must be performed. The increase is also inevitable.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention can effectively exert the function of removing the shocking lateral swing of furniture even when the amplitude is large. Is intended to provide a simpler fall prevention device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A furniture fall prevention device according to the present invention comprises a base arranged in a non-restricted state between a floor and furniture, and a furniture provided at a position where the furniture is supported by the base. An operation conversion unit that converts a part of the swing operation into a lifting operation of the furniture, and a part of the furniture that is provided on the base when the amplitude of the roll operation of the furniture exceeds a predetermined value. A hanging portion, a part of the furniture disposed between the base and the floor surface collides with the hanging portion,
Allow horizontal movement of the raised base relative to the floor
And a friction body that suppresses the moving force of the friction member.

In such a configuration, when a roll occurs in the furniture, the roll motion is converted into a lifting operation of the furniture by the motion conversion unit, and the furniture is moved to a higher position. Part of the energy is temporarily converted to potential energy, avoiding a shocking roll. In addition, when the roll exceeds a certain level, the furniture collides with the hanging portion, and the base provided with the hanging portion causes the furniture and the furniture to move horizontally with respect to the floor surface. Since a friction body is interposed between the base and the floor, the base can be moved horizontally while
At the same time as the moving force is suppressed, a part of the kinetic energy in the friction body is converted into thermal energy.
Therefore, this device can effectively exhibit the function of removing shocking energy related to the roll of the furniture even when the roll exceeds a certain level, and can prevent the furniture from overturning. In addition, this product can be assembled simply by placing a base provided with a hook on the floor via a friction body and placing furniture on it via a motion converter. The operation is much simpler than the conventional one, and the number of parts can be reduced.

As a specific embodiment, the motion conversion section is constituted by a guide surface which gradually shifts the contact position of the furniture to a higher position in the rolling direction, and the end of the guide surface is provided with the hook. And the like. In order for furniture to behave smoothly, it is desirable that a caster be attached to the lower end of the furniture.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, furniture 2 to which the fall prevention device 1 of this embodiment is applied is permanently installed at a certain place such as a chest and used for a long period of time. In addition, casters 3 are attached to the furniture 2 in the vicinity of the four corners on the lower surface so as to roll in the direction of low stability. That is, the furniture 2 of the present embodiment has a shorter depth dimension than the width dimension like the normal furniture, and is more likely to fall in the front-rear direction indicated by the arrow A in the figure than in the left-right direction. The casters 3 are arranged so as to roll in the front-back direction.

As shown in FIGS. 1 and 2, a fall prevention device 1 uses a caster 3 and a base 4, a motion conversion unit 5, and a hook 6 between a furniture 2 and a floor F. And the friction body 7 is interposed. Base 4
Is a flat casing having a bottom plate 41, a pair of opposing walls 42, and a pair of opposing walls 43 orthogonal to both opposing walls 42, and having a large opening 44 provided above. The shape roughly corresponds to the planar shape of the furniture 2.

The motion conversion unit 5 is provided on the bottom plate 41 of the base 4,
The casters 3 are arranged on four V-shaped blocks 5a fixed to the positions corresponding to the casters 3, and the casters 3 are set at regular grounding positions so that the center of the furniture 2 matches the center of the base 4. A base portion 51 to be held, and guide surfaces 52, 5, 5, 5, 5, 5, 5, 6, 7, 8, 17, 18, 17, 18, 17, 18, which gradually move the caster 3 from the base portion 51 toward the front-back direction.
3 is provided. When the furniture 2 rolls in the front-rear direction, the casters 3 are moved to their guide surfaces 5.
While guiding along the furniture 2 and 53, the rolling motion can be converted into the lifting motion of the furniture 2.

Each of the hooking portions 6 is a guide surface 52 of the motion converting portion 5 which is located closer to the center of the furniture 2 than the base portion 51.
Or, a plate-like member fixed to the upper end of 53, the amplitude of the furniture 2 exceeds a certain value, and the casters 3
A part of the furniture 2, that is, a part facing the caster 3, can be brought into contact with the hooking part 6 when the person 2 or 53 climbs up to a certain position.

The friction members 7 are plate-shaped members disposed at four positions between the base 4 and the floor surface F corresponding to the positions of the casters 3, and have a relatively small friction coefficient. It is made of a resin material or the like, and operates to suppress the moving force while allowing the base 4 to move relative to the floor surface F. In this embodiment, the friction body 7 is fixed to the lower surface of the base 4, but may be fixed to the floor F. In this embodiment, the floor F is set on a rigid flat plate 8 placed on a building floor or a tatami mat, but the building floor itself may be used as the floor of the present invention. It is.

In such a configuration, when the furniture 2 rolls, the caster 3 slides on the guide surface 52 or 53 as shown by the arrow in FIG. 2 and the furniture 2 causes the center of gravity to move to a position higher than the base 51 each time, so that a part of the kinetic energy related to the roll is temporarily converted to potential energy, Shaking is avoided. After the roll, the furniture 2 falls down along the guide surfaces 52, 53 as appropriate and stabilizes again on the base 51. Therefore, the fall prevention device 1 also has the function of automatically returning the furniture 2 to the original installation position. On the other hand, when the roll exceeds a certain level, the casters 3 which are a part of the furniture 2 collide with the hooks 6 as shown by arrows in FIG. 4, a horizontal movement is caused with respect to the floor surface F as shown by an arrow in FIG. 4, but at this time, since the friction body 7 is interposed between the base 4 and the floor surface F, At the same time that horizontal movement of 4 is suppressed,
A part of the kinetic energy is converted into thermal energy in the friction body 7. Therefore, it can effectively exert the function of removing the shocking energy related to the roll of the furniture 2 even when the roll exceeds a certain level. Of course, even during a huge earthquake, furniture can be effectively protected from damage, and at the same time, the safety around the furniture can be surely improved. In addition, on this floor, a base 4 provided with a motion conversion unit 5 and a hooking unit 6 is placed on a floor F via a friction body 7,
The assembling can be completed simply by grounding the casters 3 of the furniture 2 on the base 4, so that the work is much simpler than that of the conventional one, and the number of parts can be reduced.

In this embodiment, the operation conversion unit 5
The furniture 2 is constituted by guide surfaces 52 and 53 that gradually shift the ground contact position toward the rolling direction to a higher position, and the upper end portions of the guide surfaces 52 and 53 are provided with the hooks 6. The rolling motion of the furniture 2 can be reliably converted to the lifting motion with a simple configuration, and the roll of the furniture 2 can be reliably received by the base 4 via the hanging portion 6 in case of excessive rolling. Become.

The specific configuration of each section is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the guide surface is configured by a flat inclined surface,
Deformation such as a curved surface can be appropriately performed. Further, the operation conversion unit is not limited to the above configuration.

[0016]

The present invention is embodied in the form described above and has the following effects. That is, the furniture overturn prevention device according to the present invention converts the rolling motion of the furniture into the lifting motion in the motion conversion unit provided between the furniture and the base supporting the furniture, thereby temporarily impacting the rolling motion. In addition to the function of automatically returning the furniture to its original position when the roll converges, if the amplitude is too large, the furniture can be automatically restored at the expense of the automatic return function of the furniture. Hook provided on supporting base
A part of the furniture collides with the part, the base is moved with the furniture to the floor, and the movement is suppressed while allowing the friction body interposed between the furniture and the floor during the movement. It is designed to take away part of the energy. For this reason, it is possible to prevent furniture from overturning at the highest priority, not only during minute earthquake motions, but also during huge earthquake motions, effectively protect furniture from damage, and at the same time dramatically increase the safety around furniture. It has an excellent effect that it can be done. In addition, compared to the conventional one using a tension spring or a damping mechanism, a practical effect that the setting operation is easy and the number of parts can be reduced can be achieved.

Further, when the motion converting section is constituted by a guide surface which gradually changes the ground contact position of the furniture 2 toward the rolling direction to a higher position, and a hook is provided at an end of the guide surface. Can reliably convert the roll motion of the furniture into a lifting motion with a simple configuration, and when the roll is excessive, the roll of the furniture can be reliably received by the base via the hanging portion. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view partially showing an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the embodiment.

FIG. 3 is an operation explanatory view of the embodiment.

FIG. 4 is an operation explanatory view of the embodiment.

[Explanation of symbols]

 F: Floor surface 1: Fall prevention device 2: Furniture 3: Casters 4: Base 5: Motion conversion unit 6: Hanging unit 7: Friction bodies 52, 53 ... Guide surface

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akihiko Matsuda 6-1, 1-1 Oimari Minami, Higashinari-ku, Osaka City Inside KOKUYO Co., Ltd. 63-178542 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47B 97/00

Claims (3)

(57) [Claims] 1. A base which is arranged between a floor surface and furniture in an unrestrained state, and an operation which is provided at a position where the furniture is supported by the base and converts a part of a rolling motion of the furniture into a lifting operation of the furniture. A converting unit, a hook provided on the base, and a hanging unit for abutting a part of the furniture when the amplitude of the rolling motion of the furniture exceeds a predetermined value, between the base and the floor surface It is attracted when a part of the furniture
Allows horizontal movement of raised base relative to floor
And a friction body for suppressing the moving force of the furniture. 2. A motion conversion unit comprising a guide surface for gradually moving a ground contact position of furniture to a higher position in a rolling direction, and the hook portion being provided at an end of the guide surface. The furniture fall prevention device according to claim 1, characterized in that: 3. The furniture overturn prevention device according to claim 1, wherein a caster is attached to a lower end of the furniture.