JP7575915B2 - Fixtures and anti-tip devices and base units used therewith - Google Patents

Description

This invention relates to fixtures and anti-tip devices and base units used therewith. Here, fixtures are typically furniture such as cabinets and shelves (racks), but also include a wide range of items that are placed on the floor and may tip over in the event of an earthquake, such as electrical (electronic) products such as multifunction printers and refrigerators, display devices for merchandise, exhibition devices for artworks, PC servers, distribution boards, etc.

Many methods have been proposed to prevent cabinets from tipping over in the event of an earthquake. There are two types of methods to prevent tipping: one is to allow cabinets to sway but reduce the degree of that sway, and the other is to prevent cabinets from moving independently even during an earthquake (the building moves during an earthquake, so cabinets also sway relative to the ground, but the idea is to prevent them from moving relative to the building).

An example of the former method is a seismic isolation device that moves cabinets relative to the floor, as disclosed in Patent Document 1. On the other hand, as a means for preventing cabinets from moving independently, proposals have been made to connect the tops of the cabinets to the building walls with brackets, as disclosed in Patent Document 2, and to place anti-tip plates on which the cabinets are fixed inside the access floor, as disclosed in Patent Document 3.

JP 2007-037990 A JP 2016-002420 A Patent No. 3541362

The solution of Patent Document 1 is considered to be theoretically superior, but has the problem of an extremely complicated structure. On the other hand, the solution of Patent Document 2 has a simple structure, but has the problems of being unable to apply to layouts where the cabinet is placed away from the wall of the building (so-called island placement) and of being troublesome to attach brackets when the cabinet is tall. Furthermore, the solution of Patent Document 3 has the problems of being extremely time-consuming to install, as it is necessary to incorporate anti-tip plates into the access floor, and of being less versatile as it cannot be applied to floors that are not access floors.

The present invention was made in response to this current situation, and aims to provide a fixture tip-prevention technology that is simple in structure, easy to install, and highly practical and versatile.

The present invention includes a floor-mounted fixture and an anti-tip device and base unit used therewith, and typical configurations thereof are specified in each claim of the present application.

The fixture tip-over prevention device of the present invention comprises an elastic plate that is placed on the floor below the fixture, and the plate includes a number of connecting parts that are connected to the fixture, and a fixing part that is fixed to the floor at a position between the multiple connecting parts in a plan view.

According to the fixture tip-over prevention device of the present invention, by fixing the fixture to the floor via the fixture tip-over prevention device, it is possible to prevent the fixture from tipping over due to an earthquake or the like. Furthermore, when the fixture sways due to an earthquake or the like, the plate of the tip-over prevention device elastically bends and deforms, thereby reducing the force applied to the fixing part and preventing the tip-over prevention device from peeling off from the floor. In addition, since the tip-over prevention device and the fixture can be connected at least two points sandwiched between the fixing part, it is possible to prevent the fixture from tipping over while preventing the tip-over prevention device from peeling off from the floor in the event of shaking in two directions, for example, forward and backward or left and right.

In the fixture tip-over prevention device of the present invention, the fixing part may have a screw insertion hole through which the shank of a fixing screw that is screwed into the floor from above can be inserted.

This configuration allows the anti-tip device to be securely and easily fixed to the floor by the simple task of inserting the shaft of the fixing screw from above into the screw insertion hole of the anti-tip device and screwing it into the floor.

Furthermore, the fixing portion may be provided with a plurality of the screw insertion holes.

According to this aspect, when the anti-tip device is placed at a desired position on the floor, the options for the screwing position of the fixing screw that connects the anti-tip device to the floor are increased. For example, even if a member into which a fixing screw is difficult to screw (e.g., a rebar material inside the floor) is present below one screw insertion hole of the anti-tip device placed at a desired position, the anti-tip device can be fixed to the floor using the other screw insertion hole without changing its position. As a result, even if the screwing position of the fixing screw to the floor is limited, the anti-tip device can be fixed to the floor at a desired position, improving the freedom of layout of the fixture to which the anti-tip device is connected. It is also possible to firmly fix the anti-tip device to the floor at multiple points using multiple fixing screws.

In the fixture tip-over prevention device of the present invention, the plate has a plate-shaped base that contacts the floor surface, and the connecting part is formed by bending the plate and has an upright part extending upward from an end of the base and a flange part extending outward from an upper end of the upright part . The connecting part may also have engagement holes that open up and down and are provided in the flange part, and the connecting part and the fixture may be configured to be connectable by inserting a shaft part of a connecting screw that is attached upward to the lower part of the fixture into the engagement hole.

According to this aspect, the fixture tip-prevention device can be formed with a simple structure formed by bending and drilling a plate. This makes it possible to realize a tip-prevention device that is low-cost and easy to attach to fixtures.

Furthermore, the connecting screw may be constituted by a screw-in type adjuster member provided at the bottom of the fixture.

In this manner, the screw-in adjuster member allows the fixture and anti-tip device to be connected with a low-cost, simple configuration without the need for a dedicated connecting screw.

The base unit for fixtures of the present invention comprises a base on which the fixture body rests, and a fixture anti-tip device attached to the lower part of the base, and the fixture anti-tip device comprises an elastic plate placed on the floor below the base, the plate including a plurality of connecting portions connected to the base and a fixing portion fixed to the floor at a position between the plurality of connecting portions when viewed in a plane , and further, the plate comprises a plate-shaped base portion in contact with the floor surface, and the connecting portion is formed by bending the plate and comprises an upright portion extending upward from the end of the base and a flange portion extending outside the base from the upper end of the upright portion .

The fixture of the present invention is equipped with the fixture tip-over prevention device of the present invention or the fixture base unit of the present invention.

The fixture base unit and fixture of the present invention are equipped with the configuration of the fixture tip-over prevention device of the present invention, so it is possible to provide a fixture base unit and fixture with a tip-over prevention function that is simple in structure, easy to install, and highly practical and versatile.

The present invention does not exclude fixtures having other functions, such as shock-absorbing devices, in addition to the anti-tip device. Having a device that assists the anti-tip device is preferable as an earthquake countermeasure for fixtures.

The fixture tip-over prevention device, fixture base unit, and fixture of the present invention are simple in structure, easy to install, and provide a fixture tip-over prevention device, fixture base unit, and fixture that are highly practical and versatile.

1A and 1B are a side view and a perspective view seen from below, respectively, of one embodiment. FIG. 2 is an exploded perspective view of the embodiment as viewed from above. 1A is a plan view showing the base and the anti-tipover device, and FIG. 1B is a cross-sectional view taken along the line IIIB-IIIB of FIG. 6 is a cross-sectional view of the base and the anti-tipover device taken along the line VI-VI in FIG. FIG. 2 is an exploded perspective view showing the anti-toppling device according to the embodiment. FIG. 4 is a cross-sectional view for explaining the vibration damping effect of the embodiment. FIG. 11 is a cross-sectional view showing another embodiment. FIG. 4 is a cross-sectional view for explaining the vibration damping effect of the embodiment. 13 is a plan view showing a base and a tip-over prevention device according to still another embodiment. FIG. 10 is a cross-sectional view of the base and the anti-tip device taken along the line XX in FIG. 9 . 13 is a cross-sectional view showing a base and a tip-over prevention device according to still another embodiment. FIG.

Overview of an embodiment
Next, an embodiment of the present invention will be described with reference to the drawings. First, an embodiment shown in Figures 1 to 6 will be described. This embodiment is applied to preventing a steel cabinet 1 formed in a horizontally elongated rectangular shape in a plan view from falling over.

As shown in Figures 1 and 2, the cabinet 1 comprises a cabinet body 2 that opens forward, a double door 3 that can rotate horizontally to open and close the opening, and a steel base 4 on which the cabinet body 2 rests. Because the depth of the cabinet 1 is much smaller than its height, it is prone to tipping forward or backward in the event of an earthquake. For this reason, a tip-over prevention device 6 is used.

As shown in Figures 1 and 4, the anti-tip devices 6 are installed between the floor F and the cabinet 1 to prevent the cabinet 1 from tipping over. In this embodiment, a pair of anti-tip devices 6 are provided on the left and right below the cabinet 1. The left and right anti-tip devices 6 have the same shape and are composed of elastic metal (steel) plates that are placed on the floor F below the cabinet 1.

The anti-tip device 6 has a plate-shaped base 7 that contacts the floor surface F, a pair of front and rear connecting parts 8 provided at the front and rear ends of the base 7, and a fixing part 9 provided on the base 7 at a position between the front and rear connecting parts 8 in a plan view. The connecting parts 8 are connected to the base 4 of the cabinet 1 by a screw-in type adjuster member 23, while the fixing parts 9 are fixed to the floor F by fixing screws 10, so that the cabinet 1 is fixed to the floor F via the anti-tip device 6.

In this embodiment, the cabinet 1 is fixed to the floor F via the tip-prevention device 6, thereby preventing the cabinet 1 from tipping over due to an earthquake or the like. Furthermore, when the cabinet 1 sways due to an earthquake or the like, the base 7 of the tip-prevention device 6 elastically bends and deforms, thereby reducing the force applied to the fixing part 9 and preventing the tip-prevention device 6 from peeling off from the floor F.

In addition, in this embodiment, the anti-tip device 6 and the cabinet 1 are connected at two locations, front and rear, using front and rear connecting parts 8 sandwiching the fixing part 9. This makes it possible to prevent the cabinet 1 from tipping over while suppressing the anti-tip device 6 from peeling off from the floor F when shaking in two directions, front and rear (forward and backward).

<Configuration of the fall prevention device>
3 to 5, the anti-toppling device 6 is a generally rectangular shape with a long front-to-rear direction (vertical) in a plan view, and the width dimension (left-to-right dimension) of the anti-toppling device 6 is formed to be about one-fifth the width dimension of the horizontally elongated frame-shaped base 4. In addition, the depth dimension (front-to-back dimension) of the anti-toppling device 6 is formed to be shorter than the depth dimension of the base 4. Note that the planar shape and planar size of the anti-toppling device 6 are not limited to this embodiment and can be changed as appropriate.

As described above, the fall prevention device 6 has a plate-shaped base 7 that contacts the floor surface F, a pair of front and rear connecting parts 8 provided at the front and rear ends of the base 7, and a fixing part 9 provided on the base 7 at a position between the front and rear connecting parts 8 in a plan view. The front and rear connecting parts 8 are formed by bending the front and rear edges of the steel plate that constitutes the fall prevention device 6.

As shown in Figures 3 to 5, the connecting portion 8 includes an upright portion 81 extending upward from the front and rear ends of the base portion 7, a flange portion 82 extending from the upper end of the upright portion 81 to the outside of the base portion 7 (the opposite side to the base portion 7 in a plan view), and an engagement hole 83 with upper and lower openings provided in the flange portion 82. In this embodiment, the upright portion 81 is provided in a vertical position relative to the horizontally positioned base portion 7, and the flange portion 82 is provided in a horizontal position. The engagement hole 83 is provided in the center position of the flange portion 82 from left to right.

The width dimensions of the base 7 and the connecting portion 8 (the upright portion 81 and the flange portion 82) are the same. In addition, the base 7 has a generally rectangular shape with a long front-to-back length, while the upright portion 81 and the flange portion 82 have a generally rectangular shape with a long left-to-right length (horizontal length).

As shown in Figures 3 to 5, screw-in adjuster members 23 are attached upward from below to the four corners of the base 4 of the cabinet 1. The height of the base 4 can be adjusted by rotating the adjuster members 23. In this embodiment, the adjuster members 23 form connecting screws that connect the base 4 and the tip-over prevention device 6.

In the tip-prevention device 6, the spacing between the front and rear engagement holes 83 is configured to be the same as the spacing between a pair of adjuster members 23 aligned in the front-rear direction on the base 4. The left and right tip-prevention devices 6 are non-detachably connected to positions near the left and right edges of the base 4 by inserting the shafts of the adjuster members 23 from below into the engagement holes 83 of the connecting part 8.

The anti-tip device 6 is also configured so that it does not protrude from the cabinet 1 (base 4) in a plan view when attached to the base 4. This prevents the anti-tip device 6 from being visible to the public, which could cause a poor appearance, or prevents people from tripping over the anti-tip device 6.

As shown in Figures 3 to 5, the fixing part 9 of the tip-prevention device 6 has a large number of screw insertion holes 91 arranged in a staggered pattern. Each screw insertion hole 91 is sized to allow the shank of a fixing screw 10 to be screwed into the floor F from above to pass through. The arrangement area of the screw insertion holes 91 in the fixing part 9 is divided into left and right areas so as not to overlap with the auxiliary frame 21 of the base 4 (described later) in a plan view.

<Base unit configuration>
1 to 5, the basic structure of the base 4 is the same as that of a conventional base, and includes left and right side frames 16 and a front frame 17 and a rear frame 18 that connect the left and right side frames 16. Each of the frames 16, 17, 18 is formed in a groove shape having an upper horizontal piece 19, a lower horizontal piece 20, and an upright piece 20a provided at the tip of the lower horizontal piece 20.

The lower horizontal piece 20 is narrower than the upper horizontal piece 19. Also, the upper horizontal piece 19 of the front frame 17 is wider than the upper horizontal piece 19 of the rear frame 18, but the two may be the same width.

Auxiliary frames 21 are arranged on the left and right sides of the base 4. The auxiliary frames 21 are U-shaped with an upward opening, and both the front and rear ends are fixed to the front frame 17 and the rear frame 18 by welding or the like.

As shown in Fig. 3B and Fig. 4, the bottom surface 22 of the auxiliary frame 21 is located above the lower end of the base 4. The connecting portion 8 of the anti-toppling device 6 is non-detachably connected to both front and rear ends of the bottom surface 22 of the auxiliary frame 21 by a screw-in type adjuster member 23 via a nut member 32.

As shown in FIG. 5, when attaching the anti-tip device 6 to the base 4, the base 4 is turned upside down, the shaft of the adjuster member 23 is inserted into the engagement hole 83 of the connecting portion 8 of the anti-tip device 6, and screwed into the nut member 32 from above. This allows the base 4 and the anti-tip device 6 to be connected with a low-cost and simple configuration without using a dedicated connecting screw. Also, the anti-tip device 6 can be connected to the base 4 with the easy and quick task of screwing the adjuster member 23 into the nut member 32.

It is also possible to connect the connecting portion 8 of the anti-tip device 6 to the auxiliary frame 21 using a separately prepared fastener such as a connecting screw, without using the adjuster member 23 and the nut member 32. It is also possible to connect the anti-tip device 6 to another part of the base 4 (for example, the lower horizontal piece 20) using the adjuster member 23 or a fastener such as a dedicated connecting screw. Also, one connecting portion 8 may be connected to the base 4 with multiple fasteners.

<Floor configuration>
As shown in Fig. 4, in this embodiment, the floor F has a double floor structure called an OA floor. Specifically, the floor F includes a floor base material 53 supported on a floor slab 51 such as a concrete slab by support legs 52 with a space provided between the floor slab 51 and the floor base material 53, and a floor finishing material 54 such as a carpet laid on the floor base material 53. The floor base material 53 is made of, for example, metal or concrete. As shown in Figs. 3 and 4, the tip-over prevention device 6 is fixed to the floor base material 53 of the floor F using a fixing screw 10.

Summary of one embodiment
An example of a procedure for installing the anti-toppling device 6 will be described. First, the base 4 is placed upside down as shown in Fig. 5. The anti-toppling devices 6 are connected to the left and right edges of the bottom surface of the base 4 using the adjuster members 23.

Next, the base 4 with the anti-tip device 6 on the bottom is placed at the desired position on the floor F. As shown in Figures 3 and 4, the shaft of the fixing screw 10 is inserted from above through the screw insertion hole 91 provided in the fixing part 9 of the anti-tip device 6, penetrates the floor finishing material 54, and is screwed into the floor base material 53 for fixing.

At this time, since the fixing portion 9 of the tip-prevention device 6 is provided with a large number of screw insertion holes 91, the screw-in position of the fixing screw 10 can be appropriately selected. For example, even if a member (a support leg 52 of the floor F) into which the fixing screw 10 is difficult to screw in is present below one screw insertion hole 91 of the base 4 and tip-prevention device 6 placed in the desired position, the base 4 and tip-prevention device 6 can be fixed to the floor F using the other screw insertion hole 91 without changing their positions.

In this embodiment, one anti-tip device 6 is fixed to the floor F at two points sandwiched between the auxiliary frame 21 in a plan view. In this way, the anti-tip device 6 can be firmly fixed to the floor F at multiple points using multiple fixing screws 10.

Next, the cabinet body 2 of the cabinet 1 is placed on the base 4, and the bottom of the cabinet body 2 and the upper horizontal piece 19 of the base 4 are firmly connected using fasteners such as screws (not shown). This fixes the cabinet 1 to the floor F via the anti-tip device 6.

As shown in FIG. 6, when the floor F (building) shakes and the cabinet 1 shakes during an earthquake, the anti-tip device 6 can reliably prevent the cabinet 1 from moving and tipping over because the fixing part 9 is fixed to the floor F by the fixing screw 10, and the base 7 (including the fixing part 9) can bend and deform elastically to reduce the force applied to the fixing part 9. For example, if the base 4 is directly fixed to the floor F by a fixing device such as a screw, when the cabinet 1 shakes due to repeated earthquakes, a large pulling force is applied to the fixing device, causing the fixing device to come off the floor F and the cabinet 1 to tip over. In contrast, in this embodiment, the pulling force applied to the fixing screw 10 when the cabinet 1 shakes is reduced by the deformation of the base 7, so that the anti-tip device 6 can be significantly prevented from peeling off from the floor F. Therefore, even if earthquakes occur repeatedly, the cabinet 1 can be prevented from moving and tipping over, and safety can be significantly improved.

In addition, in this embodiment, the anti-tip device 6 can be easily attached and detached by a simple operation using the adjuster member 23 provided on the base 4. Even after the anti-tip device 6 is fixed to the floor F with the fixing screw 10, the height of the base 4 (cabinet 1) can be adjusted by rotating the screw-in adjuster member 23, making it highly practical and versatile. In addition, since the anti-tip device 6 is divided into two, left and right, for one base 4, the size of the anti-tip device 6 can be made smaller than the base 4, improving the convenience of transporting and storing the anti-tip device 6. The left and right anti-tip devices 6 may be connected by being made of a single metal plate.

<Other embodiments>
7 and 8, the structure of the floor F is different from that of the above-mentioned embodiment. The floor F of this embodiment is configured by laying a plurality of resin panels 55 on a floor slab 51, and laying a floor finishing material 54 on the resin panels 55.

In this embodiment, the fixing screw 10 is inserted through the screw insertion hole 91 from above the fixing part 9 of the tip-over prevention device 6, passes through the floor finishing material 54 and the resin panel 55, and is screwed into the floor slab 51. This allows the tip-over prevention device 6 to be firmly fixed to the floor F, and reliably prevents the cabinet 1 from moving or tipping over.

In addition, since the fixing portion 9 of the anti-tip device 6 is provided with a large number of screw insertion holes 91, even if, for example, a member (reinforcing bar material inside the floor slab 51) into which it is difficult to screw in the fixing screw 10 is present below one of the screw insertion holes 91 of the base 4 and anti-tip device 6 placed in the desired position, the other screw insertion holes 91 can be used to fix the base 4 and anti-tip device 6 to the floor F in the desired position without changing their positions.

<Further Other Embodiments>
9 and 10, for a laid-type floor F in which a plurality of resin panels 55 are laid on a floor slab 51, a lower plate 56 is placed between the resin panels 55 and a floor finishing material 54, and fixing screws 10 are fixed to the lower plate 56. Although not shown in the drawings, the lower plate 56 is fixed to the resin panels 55 by fixing means such as adhesive, double-sided tape, hook-and-loop fastener, etc. The lower plate 56 is a member that constitutes a part of the floor F.

As shown in FIG. 9, the lower plate 56 is configured so that its front-to-back length is greater than the front-to-back length (depth dimension) of the base 4, and is disposed so that it extends beyond the front and rear of the base 4 in a plan view. This allows the lower plate 56 to act as a support and prevent the cabinet 1 from falling over when the cabinet 1 sways due to an earthquake or the like. The lower plate 56 is covered with a floor finishing material 54 such as a carpet, which prevents the appearance from becoming unattractive.

Also, as shown in FIG. 11, a nut member 57 may be fixed to the upper surface of the lower plate 56, and a fixing screw 15 may be screwed into the nut member 57 through a screw insertion hole 91 from above the fixing portion 9 of the anti-toppling device 6, thereby fixing the anti-toppling device 6 to the floor F.

According to these embodiments, the anti-tip device 6 can be firmly fixed to the floor F, which is made of resin panels 55 laid on the floor slab 51, with a simple configuration in which a lower plate 56 is disposed between the resin panels 55 and the floor finishing material 54, without damaging the floor slab 51.

＜Other＞
Although the embodiment of the present invention has been described above with reference to the drawings, the present invention can be embodied in various other ways. For example, the applicable fixtures are not limited to cabinets, and as mentioned in the technical field section, the present invention can be applied to electric and electronic devices, vending machines, refrigerators, and product display shelves.

In the above embodiment, the base 7 of the anti-tip device 6 has a flat plate shape, but it is possible to give the base 7 a desired rigidity (resistance to deformation), for example, by adding bending processing to the base 7 or forming the base 7 into a corrugated plate shape. In addition, the floor F is not limited to a double floor structure, and may be a floor structure in which there is no space between the floor slab and the floor finishing material to allow wiring, etc. to be routed.

The present invention can be embodied in a device to prevent furniture from falling over. It can therefore be used industrially.

Reference Signs List 1 Cabinet 4 Base 6 Anti-tip device 7 Base 8 Connecting portion 9 Fixing portion 10 Fixing screw 15 Fixing screw 23 Adjuster member 81 Standing portion 82 Flange portion 83 Engagement hole 91 Screw insertion hole F Floor

Claims (7)

A resilient plate is provided on the floor below the fixture,
The plate includes a plurality of connecting portions that are connected to the fixture, and a fixing portion that is fixed to the floor at a position between the plurality of connecting portions in a plan view, and further includes
The plate includes a plate-shaped base portion that contacts a floor surface,
The connecting portion is formed by bending the plate, and includes an upright portion extending upward from an end of the base portion, and a flange portion extending outward from an upper end of the upright portion to the outside of the base portion.
Anti-tip device for fixtures. The fixing portion has a screw insertion hole through which a shank of a fixing screw that is screwed into the floor from above can be inserted.
The fixture tip-over prevention device according to claim 1. A plurality of the screw insertion holes are provided in the fixing portion.
The fixture tip-over prevention device according to claim 2. The connecting portion includes an engagement hole having upper and lower openings provided in the flange portion,
The connecting portion and the fixture are configured to be connectable by inserting the shaft portion of the connecting screw, which is attached upward to the lower portion of the fixture, into the engagement hole.
A fixture tip-over prevention device as claimed in any one of claims 1 to 3. The connecting screw is constituted by a screw-in type adjuster member provided at the bottom of the fixture,
The fixture tip-over prevention device according to claim 4. The fixture is provided with a base on which the fixture body rests and a fixture tip-over prevention device attached to the bottom of the base,
The fixture tip-over prevention device includes an elastic plate disposed on a floor below the base, the plate including a plurality of connecting parts connected to the base and a fixing part fixed to the floor at a position between the plurality of connecting parts in a plan view, and further including:
The plate includes a plate-shaped base portion that contacts a floor surface,
The connecting portion is formed by bending the plate, and includes an upright portion extending upward from an end of the base portion, and a flange portion extending outward from an upper end of the upright portion to the outside of the base portion.
Base unit for fixtures. The fixture anti-tip device according to any one of claims 1 to 5 or the fixture base unit according to claim 6 is provided.
furniture.

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