JP7822155B2 - Fixture tip-over prevention structures, and panel restraining members, panel connecting members, and panel under-panel members used in fixture tip-over prevention structures - Google Patents

Description

The present invention relates to a structure that prevents fixtures placed on a raised floor, which has multiple floor panels laid on the floor surface via panel supports, from tipping over. Here, fixtures include furniture such as cabinets and shelves (racks), but also broadly include electrical (electronic) products such as multifunction printers and refrigerators, display devices for merchandise, exhibit devices for artwork, PC servers, distribution boards, and other items that are placed on the floor and are at risk of tipping over in an earthquake.

Many methods have been proposed to prevent cabinets from tipping over in the event of an earthquake. Measures to prevent tipping include those that allow cabinets to sway but reduce the degree of that sway, and those that 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, means to prevent cabinets from moving independently include connecting the tops of the cabinets to the building walls with brackets, as disclosed in Patent Document 2, and placing anti-tip plates on which cabinets are fixed inside the OA floor, as disclosed in Patent Document 3.

Japanese Patent Application Laid-Open No. 2007-037990 JP 2016-002420 A Patent No. 3541362

The solution described in Patent Document 1 is considered theoretically superior, but suffers from the problem of an extremely complex structure. On the other hand, the solution described in Patent Document 2 has a simple structure, but suffers from the problems of being unable to be applied to layouts where the cabinets are placed away from the building walls (so-called island placement), and of the difficulty of attaching brackets when the cabinets are tall. Furthermore, the solution described in Patent Document 3 suffers from the problems of incorporating anti-tip plates into the access floor, which requires a great deal of work, and of being unable to be applied to floors that are not access floors, resulting in poor versatility.

The most common and simplest method of preventing fixtures from tipping over is to secure them directly to the floor or wall, and fixtures that are not placed along the wall have no choice but to be secured to the floor. However, if fixtures are secured to the floor panels of an OA floor, there is a risk that if the fixtures tilt due to floor shaking such as during an earthquake, the floor panels to which the fixtures are secured will lift up, causing the fixtures to tip over along with the floor panels. Some OA floors are also equipped with panel retaining members that secure the four corners of the floor panels from above. However, even with these types, there is a risk that the panel retaining members will break if the fixtures tilt, causing the fixtures to tip over along with the floor panels.

The present invention was developed in response to this current situation, and its purpose is to prevent fixtures fixed to the floor panels of a raised floor from tipping over.

A first aspect of the fixture tip-over prevention structure of the present invention is a structure for preventing the tip-over of fixtures placed on a double floor having multiple floor panels laid on the floor surface via panel supports. The structure includes a fastener for fixing the fixture to a fixture-fixed floor panel selected from the multiple floor panels, and a panel restricting member for preventing the fixture-fixed floor panel from lifting up. The panel support has a support base that extends sideways from the top of a support leg erected on the floor surface and supports the edge of the floor panel. The panel restricting member has an insertion portion that passes vertically through the gap between the fixture-fixed floor panel and its adjacent floor panel, an upper locking portion that extends from the upper end of the insertion portion toward the top of the fixture-fixed floor panel, and a lower locking portion that extends from the lower end of the insertion portion toward the bottom of the support base.

According to the first aspect of the present invention, even if the fixture-fixed floor panel attempts to lift when the floor shakes due to an earthquake or other event, the lower locking portion of the panel restricting member catches on the support base of the panel support, preventing the fixture from lifting. This prevents fixtures from tipping over. Furthermore, the panel restricting member can be realized with a simple structure formed, for example, by bending sheet metal, and can be attached to an existing double floor structure without any additional work. Therefore, this aspect of the present invention can prevent fixtures from tipping over with low cost and simple work.

A second aspect of the fixture tip-over prevention structure of the present invention is a structure for preventing the tip-over of fixtures placed on a double floor having multiple floor panels laid on the floor surface via panel supports. The structure includes a fastener for securing the fixture to a fixture-fixed floor panel selected from the multiple floor panels, and a panel connecting member for preventing the fixture-fixed floor panel from lifting up. The panel support supports the edge of the floor panel with a support base while pressing the edge downward with a retaining member. The panel connecting member has an insertion portion that passes vertically through the gap between the fixture-fixed floor panel and the adjacent floor panel, an upper locking portion that extends from the upper end of the insertion portion toward the top of the fixture-fixed floor panel, and a lower locking portion that extends from the lower end of the insertion portion toward the bottom of the adjacent floor panel.

According to the second aspect of the present invention, even if the fixture-fixed floor panel attempts to lift when the floor shakes due to an earthquake or other event, the lower locking portion of the panel connecting member catches on the underside of the adjacent floor panel, preventing the fixture from lifting. This prevents fixtures from tipping over. Furthermore, the panel connecting member can be realized with a simple structure formed, for example, by bending sheet metal, and can be attached to an existing double floor structure without any additional work, so this aspect of the present invention can prevent fixtures from tipping over with low cost and simple work.

A third aspect of the fixture tip-over prevention structure of the present invention is a structure for preventing tip-over of fixtures placed on a double floor having a plurality of floor panels laid on the floor surface via panel supports, and comprises a fixing device for fixing the fixture to a fixture-fixed floor panel selected from the plurality of floor panels, and a panel under-member for preventing the floor panel from lifting up, the panel support being configured to support the edge of the floor panel with a support base portion while pressing the edge downward with a pressing member, the panel under-member being positioned from below the fixture-fixed floor panel to below the adjacent floor panel, and the fixing device passing through the fixture-fixed floor panel and connected to the panel under-member , and the panel under-member is not bolted to the floor surface .

According to the third aspect of the present invention, even if the fixture-fixed floor panel attempts to lift when the floor shakes due to an earthquake or other event, the lower panel member catches on the underside of the adjacent floor panel, preventing the fixture-fixed floor panel from lifting and preventing fixtures from tipping over. Furthermore, the panel connecting member can be realized with a simple structure formed, for example, from metal pipes or sheet metal bending, and can be attached to an existing double floor structure without any additional construction work, so this aspect of the present invention can prevent fixtures from tipping over at low cost and with simple work.

The fixture tip-over prevention structure of the present invention includes a fixture tip-over prevention device interposed between the fixture and the fixing device, and the fixture tip-over prevention device includes an elastic plate placed on the fixture fixed floor panel below the fixture, the plate including multiple connecting portions that connect to the fixture and a fixing portion that is fixed to the floor panel at a position between the multiple connecting portions in a plan view, and the fixing portion may be fixed to the fixture fixed floor panel by the fixing device.

In this manner, fixtures can be secured to floor panels via fixture anti-tip devices, preventing fixtures from tipping over in earthquakes and other events. Furthermore, when fixtures sway during an earthquake or other event, the plate of the anti-tip device elastically bends and deforms, reducing the force applied to the securing part and preventing the anti-tip device from peeling off from the floor panel. Furthermore, because the anti-tip device and fixtures can be connected at at least two points sandwiched between the securing part, fixtures can be prevented from tipping over in the event of swaying in two directions, for example, forward and backward or left and right, while preventing the anti-tip device from peeling off from the floor panel.

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

The fixture tip-over prevention structure of the present invention can prevent fixtures fixed to the floor panels of a double floor from tipping over.

1A and 1B show fixtures and an anti-tip device, where FIG. 1A is a side view and FIG. 1B is a perspective view from below. FIG. 2 is a separated perspective view of the fixture and the fall prevention device from above. 1A is a plan view showing the base and the anti-tip device, and FIG. 1B is a cross-sectional view taken along the line IIIB-IIIB in FIG. FIG. 9 is a cross-sectional view taken along the line IV-IV in FIG. 8. FIG. 2 is an exploded perspective view showing the fall prevention device. FIG. 10 is a cross-sectional view illustrating the vibration damping effect of the anti-toppling device. 10 is a plan view showing an example of the arrangement of a panel restricting member together with a floor panel. FIG. 10 is a plan view showing the panel regulating member together with the base, the anti-tip device, and the floor panel. FIG. 1A shows a panel support, in which (A) is a plan view, (B) is a side view, and (C) is an exploded side view. 10A and 10B are side views for explaining a procedure for installing the panel restricting member. FIG. 10 is a plan view for explaining the installation procedure. FIG. 2 is a perspective view showing the panel restricting member together with the floor panel. FIG. 10 is a cross-sectional view illustrating an anchor member as an example of a fixing tool. 1A is a plan view showing an example of the arrangement of panel regulating members, and FIG. 1B is a side view showing an example of the arrangement of panel regulating members relative to an intermediate panel support member. 10 is a plan view showing a modified example of the panel restricting member together with the base, the anti-tip device, and the floor panel. FIG. FIG. 16 is a cross-sectional view taken along the line XVI-XVI in FIG. 15 . 10A and 10B are side views for explaining a procedure for installing a modified example of the panel restricting member. FIG. 10 is a plan view for explaining the installation procedure. FIG. 10 is a plan view showing an example of the arrangement of panel connecting members together with floor panels. 10 is a cross-sectional view illustrating the arrangement structure of the panel connecting member. FIG. FIG. 10 is a plan view showing an example of the arrangement of a modified example of the panel connecting member together with the floor panel. FIG. 10 is a cross-sectional view illustrating the arrangement structure of the modified example. 1A is a plan view showing an example of the arrangement of a panel lower member, and FIGS. 1B, 1C, and 1D are a plan view, a front view, and a side view of the same panel lower member. FIG. 4 is a cross-sectional view illustrating the arrangement structure of the panel lower member. 1A is a plan view showing an example of the arrangement of a modified example of the panel lower member, and FIGS. 1B, 1C, and 1D are a plan view, a front view, and a side view of the same modified example. FIG. 10 is a cross-sectional view illustrating the arrangement structure of the modified example.

Overview of First Embodiment
Next, an embodiment of the present invention will be described with reference to the drawings. First, an embodiment shown in Figures 1 to 11 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 tipping over.

As shown in Figures 1 to 4, the cabinet 1 is placed on a double-floor structure F, which has multiple floor panels 53 laid on a floor slab 51 (floor surface) via panel supports 70. The cabinet 1 comprises a cabinet main body 2 that opens forward, a double-door door 3 that can rotate horizontally to open and close the opening, and a steel plate base 4 on which the cabinet main 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, an anti-tip device 6 is used in this embodiment.

As shown in Figures 1, 4, and 7 to 11, fixing screws 10 (an example of a fastener) are provided to secure the cabinet 1 to a fixture-fixed floor panel 53A selected from the multiple floor panels 53, and panel restricting members 60 are provided to prevent the fixture-fixed floor panel 53A from lifting up. As shown in Figures 7 and 8, the cabinet 1 is placed on the floor F, straddling the two fixture-fixed floor panels 53A. Four panel restricting members 60 are provided at locations corresponding to the four corners of the cabinet 1. Note that the floor finishing material 54 is not shown in Figures 7 and 8.

The panel support 70 has a support base 72 that extends sideways from the top of the support leg 71 erected on the floor slab 51 and supports the edge 53a of the floor panel 53. The panel restricting member 60 has an insertion portion 61 that passes vertically through the gap S between the fixture fixed floor panel 53A and its adjacent floor panel 53B, an upper locking portion 62 that extends from the upper end of the insertion portion 61 toward the top of the fixture fixed floor panel 53A, and a lower locking portion 63 that extends from the lower end of the insertion portion 61 toward the bottom of the support base 72. The panel restricting member 60 is made of metal plate.

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 made 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 F, a pair of front and rear connecting portions 8 provided at the front and rear ends of the base 7, and a fixing portion 9 provided on the base 7 at a position between the front and rear connecting portions 8 in a plan view. The connecting portion 8 is connected to the base 4 of the cabinet 1 with a screw-in adjuster member 23, while the fixing portion 9 is fixed to the floor F (furniture fixed floor panel 53A) with fixing screws 10, thereby fixing the cabinet 1 to the floor F (furniture fixed floor panel 53A) via the anti-tip device 6.

The fastener used to secure the anti-tip device 6 to the fixture fixed floor panel 53A is not limited to the fixing screw 10. For example, the anti-tip device 6 (cabinet 1) may be secured to the fixture fixed floor panel 53A using a scissors-type anchor member 11 (see Figure 13), such as an IT hanger.

In this embodiment, even if the fixture fixed floor panel 53A attempts to lift when the floor F shakes due to an earthquake or other event, the lower locking portion 63 of the panel restricting member 60 hooks onto the support base portion 72 of the panel support body 70, preventing the fixture fixed floor panel 53A from lifting. This prevents the cabinet 1 from tipping over. Furthermore, the panel restricting member 60 can be realized with a simple structure formed, for example, by bending sheet metal, and can be attached to an existing double floor structure without any additional work, so this embodiment can prevent fixtures from tipping over with low cost and simple work.

In addition, in this embodiment, by fixing the cabinet 1 to the furniture fixing floor panel 53A on the floor F via the anti-tip device 6, it is possible to prevent 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 anti-tip device 6 elastically bends and deforms, thereby reducing the force applied to the fixing part 9 and preventing the anti-tip 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 anti-tip device 6 from peeling off from the floor F when the cabinet 1 is shaken in two directions (forward and backward), while also preventing the cabinet 1 from tipping over.

<Floor configuration>
As shown in Figures 4 and 7 to 11, in this embodiment, the floor F has a double-floor structure known as an OA floor. Specifically, the floor F includes floor panels 53 supported on a floor slab 51, such as a concrete slab, by support legs 71 with a space provided between the floor slab 51 and the floor panel 53, and a floor finishing material 54, such as carpet, laid on the floor panels 53. The floor panels 53 are made of, for example, metal or concrete.

As shown in Figure 9, the panel support body 70 has a support leg 71 erected on the floor slab 51, a support base 72 extending laterally from the top of the support leg 71, a positioning member 73 attached to the upper surface of the support base 72, and a retaining member 74 attached to the top of the positioning member 73. The support leg 71 has a height adjustment function, and a flange 71a attached to the bottom of the support leg 71 is fixed to the floor slab 51 with adhesive, bolts, or the like (not shown). The support base 72 is donut-shaped and disc-shaped, and is fixed to the upper end of the support leg 71 by welding or the like. Four radially extending base protrusions 72a are provided on the top surface of the support base 72 at equal intervals around the circumference. The support leg 71 and support base 72 are made of metal.

The positioning member 73 is made of resin and has a cylindrical portion 73b that protrudes from the center of the top surface of a disk-shaped base portion 73a. Four positioning ribs 73c extend in all directions from the side surfaces of the cylindrical portion 73b. Recesses are formed inside the base portion 73a and the ribs 73c into which the support base portion 72 and base protrusions 72a fit. By fitting the positioning member 73 into the support base portion 72 from above, engaging claws (not shown) provided on the peripheral ribs of the base portion 73a engage with the underside of the peripheral edge of the support base portion 72, connecting the support base portion 72 and the positioning member 73 so that they cannot come loose.

As shown in Figure 7, the floor panel 53 is roughly square in plan view, with cutouts 53b formed at the four corners 53e (which are also the edges 53a). The upper surface of each corner 53e is formed with a roughly quarter-circular recess 53c into which a retaining member 74, described below, fits. A cushioning member 53d made of an elastic material such as rubber is provided on the lower surface of each corner 53e.

As shown in Figures 7, 9, etc., a large number of panel supports 70 are erected at equal intervals in a grid pattern on the floor slab 51. The corners 53e of four floor panels 53 are arranged on the support base 72 of each panel support 70. In other words, each floor panel 53 is supported by four panel supports 70. Adjacent floor panels 53 are arranged close to each other. Between adjacent floor panels 53, rib portions 73c of positioning members 73 are interposed near the corners 53e, while gaps S are formed in positions that do not overlap with the panel supports 70 in a plan view.

As shown in Figure 9 and other figures, a retaining member 74 is removably attached to the upper end of the cylindrical portion 73b of the positioning member 73. The retaining member 74 is made of resin and has a threaded portion 74b hanging down from the center of the underside of a disk-shaped retaining portion 74a that fits into the recesses 53c of four floor panels 53 placed on the support base 72. By screwing the threaded portion 74b of the retaining member 74 into a female thread (not shown) cut into the inner wall of the cylindrical portion 73b of the positioning member 73, the retaining member 74 is irremovably connected to the positioning member 73, and the retaining portion 74a fits into the recesses 53c of the floor panel 53 and faces the upper surface of the corner 53e. This prevents the floor panel 53 from lifting up.

Instead of the retaining member 74, a metal disk-shaped cap member with a screw hole in the center can be used, and the cap member can be connected to the support leg 71 with a screw member. In this case, a screw hole is provided on the upper end of the support leg 71, and the screw hole is exposed on the upper surface of the support base 72. A screw member is inserted from above into the screw hole of the cap member and screwed into the screw hole of the support leg 71 via the cylindrical portion 73b of the positioning member 73. In this way, the cap member is directly connected to the support leg 71, more firmly preventing the floor panel 53 from lifting up.

In this way, the floor panel 53 is prevented from lifting up by the retaining member 74. However, in the case of the fixture fixed floor panel 53A to which the cabinet 1 is fixed, if the cabinet 1 tilts in response to shaking of the floor F due to an earthquake or other event, a force may act in the direction of lifting the fixture fixed floor panel 53A, potentially damaging the retaining member 74, and this is not a sufficient measure to prevent tipping over. Therefore, in this embodiment, a panel restricting member 60 is attached to the double-layered floor F to prevent the fixture fixed floor panel 53A from lifting up.

<Configuration of panel restricting member>
4 and 10 to 12, the plate-shaped upper locking portion 62 of the panel restricting member 60 is generally rectangular in plan view, and a plate-shaped insertion portion 61 hangs down from the center of one side of the upper locking portion 62, extending along that side in plan view. A plate-shaped lower locking portion 63 extends from the lower end of the insertion portion 61 in a direction along the side of the upper locking portion 62 in plan view. The insertion portion 61 and the lower locking portion 63 form an inverted T shape in side view.

A pair of tilt suppression portions 64 extend from both edge portions of the above-mentioned side of the upper locking portion 62, sandwiching the base end of the insertion portion 61. The insertion portion 61 and the pair of tilt suppression portions 64 are concave in plan view. Both edge portions of the lower locking portion 63 in the direction along the above-mentioned side are located below the tilt suppression portions 64.

<Installation of panel restraining members>
10 to 12, the thickness of the insertion portion 61 and the lower locking portion 63 is set to be smaller than the gap S. The insertion portion 61 and the lower locking portion 63 are inserted into the gap S from above before the floor finishing material 54 is laid or after the floor finishing material 54 has been peeled off (see the upper drawing in FIG. 10).

The panel restricting member 60 is inserted into the gap S with the upper retaining portion 62 positioned above the fixture fixed floor panel 53A. The upper retaining portion 62 abuts against the upper surface of the fixture fixed floor panel 53A, and the tilt suppression portion 64 abuts against the upper surface of the adjacent floor panel 53B, maintaining the vertical position of the insertion portion 61 and lower retaining portion 63 (see the middle diagrams in Figure 10 and Figure 11).

Next, slide the panel restricting member 60 along the gap S to position the lower locking portion 63 below the support base portion 72 (see the bottom diagrams of Figures 10 and 11). For example, slide the panel restricting member 60 until the end of the lower locking portion 63 contacts the support leg 71.

When a force is applied in the direction that causes the fixture fixed floor panel 53A to lift up, the lower locking portion 63 of the panel restricting member 60 contacts the underside of the support base portion 72 (positioning member 73), and the upper locking portion 62 restricts the upward movement of the fixture fixed floor panel 53A. This allows the panel restricting member 60 to prevent the fixture fixed floor panel 53A from lifting up. Furthermore, the panel restricting member 60 can be installed without removing the floor panel 53, improving workability.

Even if the panel support body 70 does not have a retaining member 74, the fixture fixed floor panel 53A can be prevented from lifting up by positioning the lower locking portion 63 of the panel restricting member 60 below the support base portion 72.

<Configuration of the fall prevention device>
3 to 5, the anti-tip device 6 is a generally rectangular shape with its front-to-back length (vertical length) in plan view, and the width dimension (left-to-right dimension) of the anti-tip device 6 is approximately one-fifth the width dimension of the laterally elongated frame-shaped base 4. The depth dimension (front-to-back dimension) of the anti-tip device 6 is also shorter than the depth dimension of the base 4. The planar shape and planar size of the anti-tip device 6 are not limited to those in 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 F, a pair of front and rear connecting portions 8 provided at the front and rear ends of the base 7, and a fixing portion 9 provided on the base 7 between the front and rear connecting portions 8 in a plan view. The front and rear connecting portions 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 from the base portion 7 in a plan view), and an engaging 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 7, and the flange portion 82 is provided in a horizontal position. The engaging hole 83 is also provided in the center position of the flange portion 82.

The width dimensions of the base 7 and the connecting portion 8 (the upright portion 81 and the flange portion 82) are the same. Furthermore, the base 7 has a roughly rectangular shape with its front-to-back length extended, while the upright portion 81 and the flange portion 82 have a roughly rectangular shape with its left-to-right length extended (horizontally elongated).

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

The spacing between the front and rear engagement holes 83 of the anti-tip device 6 is configured to be the same as the spacing between a pair of adjuster members 23 lined up in the front-to-rear direction on the base 4. The left and right anti-tip 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.

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

As shown in Figures 3 to 5, the fixing portion 9 of the anti-tip device 6 has a large number of screw insertion holes 91 arranged in a staggered pattern. Each screw insertion hole 91 is sized to accommodate the shank of a fixing screw 10 that is screwed into the floor F from above. The arrangement area of the screw insertion holes 91 in the fixing portion 9 is divided into left and right areas so that they do not overlap with the auxiliary frame 21 of the base 4, which will be 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 connecting front and rear frames 17 and 18. Each of the frames 16, 17, and 18 is formed in a groove shape with 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, which are longitudinal from front to rear, are located on both the left and right sides of the base 4. The auxiliary frames 21 are U-shaped with an upward opening, and their front and rear ends are fixed to the front frame 17 and rear frame 18 by welding or other means.

As shown in Figures 3(B) and 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-tip device 6 is non-detachably connected to both the front and rear ends of the bottom surface 22 of the auxiliary frame 21 by a screw-type adjuster member 23 via a nut member 32.

As shown in Figure 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 then screwed into the nut member 32 from above. This allows the base 4 and anti-tip device 6 to be connected with a low-cost, simple configuration without using a dedicated connecting screw. Furthermore, 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 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 dedicated fastener such as a connecting screw. Furthermore, one connecting portion 8 may be connected to the base 4 using multiple fasteners.

Summary of one embodiment
An example of the procedure for installing the anti-tip device 6 will now be described. First, the base 4 is placed upside down as shown in Figure 5. The anti-tip device 6 is connected to each of the left and right edges of the underside of the base 4 using the adjuster members 23.

Next, the base 4 with the anti-tip device 6 facing downwards is placed at the desired position on the floor F. As shown in Figures 3 and 4, the shank 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 panel 53 to secure it.

In this case, since the fixing portion 9 of the anti-tip device 6 is provided with multiple screw insertion holes 91, the screwing position of the fixing screw 10 can be selected as appropriate. For example, even if a component (a support leg 71 of the floor F) into which a fixing screw 10 is difficult to screw is located below one of the screw insertion holes 91 of the base 4 and anti-tip device 6 placed in the desired position, the base 4 and anti-tip device 6 can be fixed to the floor F using the other screw insertion holes 91 without changing their positions.

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

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

As shown in FIG. 6 , when floor F (building) shakes and cabinet 1 sways during an earthquake, the anti-tip device 6 reliably prevents cabinet 1 from moving or tipping over because the fixing portion 9 is fixed to floor F with fixing screws 10. Furthermore, the base 7 (including fixing portion 9) elastically bends and deforms, reducing the force acting on fixing portion 9. For example, if the base 4 were directly fixed to the floor F with a fastener such as a screw, repeated earthquakes would cause a large pull-out force to be exerted on the fastener, causing it to come loose from floor F and causing cabinet 1 to tip over. In contrast, in this embodiment, the pull-out force acting on the fixing screw 10 when cabinet 1 shakes is reduced by the deformation of base 7, significantly reducing separation of anti-tip device 6 from floor F. Therefore, the cabinet 1 can be prevented from moving or tipping over even during repeated earthquakes, significantly improving safety.

Furthermore, in this embodiment, the anti-tip device 6 can be easily attached and detached using the adjuster member 23 provided on the base 4 with a simple operation. Furthermore, even after the anti-tip device 6 is fixed to the floor F with the fixing screws 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. Furthermore, 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 also be connected by a single metal plate.

<Other arrangement examples of panel restricting members>
14, a plurality of panel restricting members 60 may be arranged for one panel support body 70, with the lower locking portion 63 of each panel restricting member 60 positioned below the support base portion 72 of one panel support body 70. Alternatively, an intermediate panel support body 70A may be provided to support a midpoint of the edge portion 53a of the floor panel 53, and the panel restricting members 60 may be provided so that the lower locking portion 63 is positioned below the support base portion 72 of the intermediate panel support body 70A.

As shown in Figure 14 (B), the intermediate panel support 70A has support legs 71 and a support base 72, just like the panel support 70, but does not have the base protrusions 72a, positioning members 73, or retaining members 74 (see Figure 9, etc.). A buffer member 75 made of an elastic material such as rubber is provided on the upper surface of the support base 72 of the panel support 70.

The intermediate panel support 70A is disposed below and straddles adjacent floor panels 53, supporting the midpoints of the opposing sides (edges 53a) of those floor panels 53. The panel restricting member 60 can be disposed on the intermediate panel support 70A in the same manner as the process for disposing the panel restricting member 60 on the panel support 70. That is, the panel restricting member 60 can be disposed by the simple procedure of inserting the lower locking portion 63 and insertion portion 61 of the panel restricting member 60 into the gap S, and then sliding the panel restricting member 60 until the lower locking portion 63 is positioned below the support base portion 72 of the intermediate panel support 70A.

In addition, in a configuration in which two fixture-fixed floor panels 53A are arranged adjacent to each other, as shown in Figures 7 and 14, when viewed from one fixture-fixed floor panel 53A, the other fixture-fixed floor panel 53A constitutes an adjacent floor panel 53B.

<Modification of Panel Regulating Member>
The panel regulating member 60A shown in Figures 15 to 18 has an insertion portion 61A that passes vertically through the gap S between the fixture fixed floor panel 53A and its adjacent floor panel 53B, an upper engaging portion 62A that extends from the upper end of the insertion portion 61A toward above the fixture fixed floor panel 53A, and a lower engaging portion 63A that extends from the lower end of the insertion portion 61A toward below the support base portion 72.

The panel restricting member 60A is made of metal plate and has a pair of flat insertion portions 61A. These insertion portions 61A are arranged in a substantially vertical position, sandwiching the panel support body 70 in a plan view. Extending from the upper end of each insertion portion 61A are a pair of upper locking portions 62A that are arranged in a substantially horizontal position on the fixture fixed floor panel 53A.

The lower retaining portion 63A has a roughly semicircular shape in plan view and is disposed in a roughly horizontal position, spanning below the corners 53e of the floor panels 53A and 53B. The linear edge of the lower retaining portion 63A is longer than the diameter of the support base 72 of the panel support body 70, connecting the lower ends of the pair of insertion portions 61A. A roughly semicircular cutout 63a is provided in the center of the linear edge of the lower retaining portion 63A, into which half of the support leg 71 of the panel support body 70 fits. With the cutout 63a fitted into the support leg 71, the lower retaining portion 63A is fixed to the underside of the support base 72 of the panel support body 70 with an adhesive 65, such as double-sided tape.

Even if the fixture-fixed floor panel 53A attempts to lift when the floor F shakes due to an earthquake or other event, the lower locking portion 63A of the panel restraining member 60A hooks onto the support base portion 72 of the panel support body 70, while the upper locking portion 62A restricts the upward movement of the fixture-fixed floor panel 53A. This prevents the fixture-fixed floor panel 53A from lifting up and the cabinet 1 from tipping over. Furthermore, the panel restraining member 60A can be realized with a simple structure formed, for example, by bending sheet metal, and can be attached to an existing double floor structure without any additional work. Therefore, this embodiment can prevent fixtures from tipping over at low cost and with simple work.

<Installation of Modified Panel Regulating Member>
As shown in the top and middle views of Figures 17 and 18, before installation, the upper locking portions 62A of the panel restricting member 60A are not bent relative to the insertion portions 61A and are arranged straight. Before laying the fixture fixed floor panel 53A, or after the fixture fixed floor panel 53A has been removed, the cutout portions 63a of the panel restricting member 60A are fitted into the support legs 71, and the lower locking portions 63 are fixed to the underside of the support base portion 72 with adhesive 65 (see the top views of Figures 17 and 18). The pair of insertion portions 61A are adjacent to the adjacent floor panel 53B.

After placing the corner 53e of the fixture fixing floor panel 53A on the support base 72 of the panel support body 70, the retaining member 74 is attached to the positioning member 73 (see the middle diagrams in Figures 17 and 18). The insertion portion 61A is positioned in the gap S, while the portion that constitutes the upper locking portion 62A protrudes upward from the top surfaces of the floor panels 53A and 53B.

The portion that constitutes the upper retaining portion 62A is bent toward the fixture fixed floor panel 53A (see the bottom diagrams in Figures 17 and 18). This completes the installation of the panel restricting member 60A.

When a force is applied in the direction that causes the fixture fixed floor panel 53A to lift up, the lower locking portion 63A of the panel restricting member 60A contacts the underside of the support base portion 72 (positioning member 73), and the upper locking portion 62A restricts the upward movement of the fixture fixed floor panel 53A. This allows the panel restricting member 60 to prevent the fixture fixed floor panel 53A from lifting up. The panel restricting member 60A can prevent the fixture fixed floor panel 53A from lifting up even if the panel support body 70 is configured without a retaining member 74.

<Outline of Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to the drawings. The cabinet 1, the fall prevention device 6, the double-layered floor F, and other structures are the same as those in the above embodiment, so detailed description thereof will be omitted.

As shown in Figures 19 and 20, this embodiment is a structure that prevents a cabinet 1 from tipping over when placed on a double floor having multiple floor panels 53 laid on a floor slab 51 (floor surface) via panel supports 70. An anchor member 11 (fixing device) is provided for securing the cabinet 1 to a fixture-fixed floor panel 53A selected from the multiple floor panels 53, and a panel connecting member 40 is provided for preventing the fixture-fixed floor panel 53A from lifting up. The panel support member 70 supports the corner 53e (also the edge 53a) of the floor panel 53 with a support base portion 72, while pressing the corner 53e downward with a pressing member 74.

As shown in Figure 19, the cabinet 1 is placed on the floor F, straddling two fixture-fixed floor panels 53A. A panel connecting member 40 is provided for each fixture-fixed floor panel 53A. The panel connecting member 40 is made of metal plate and has an insertion portion 41 that passes vertically through the gap S between the fixture-fixed floor panel 53A and its adjacent floor panel 53B, an upper locking portion 42 that extends from the upper end of the insertion portion 41 toward the top of the fixture-fixed floor panel 53A, and a lower locking portion 43 that extends from the lower end of the insertion portion 41 toward the bottom of the adjacent floor panel 53B.

In this embodiment, even if the fixture fixed floor panel 53A attempts to lift when the floor F shakes due to an earthquake or other event, the lower locking portion 43 of the panel connecting member 40 hooks onto the underside of the adjacent floor panel 53B, and the upper locking portion 42 restricts the upward movement of the fixture fixed floor panel 53A. This prevents the fixture fixed floor panel 53A from lifting up, and prevents the cabinet 1 from tipping over. Furthermore, the panel connecting member 40 can be realized with a simple structure formed, for example, by bending sheet metal, and can be attached to an existing double floor structure without any additional work, making it possible to prevent the cabinet 1 from tipping over with low cost and simple work.

<Configuration of panel connecting member>
As shown in Figures 19 and 20, the plate-shaped upper locking portion 42 of the panel connecting member 40 is generally rectangular in plan view, and its longitudinal dimension extends from one side of the fixture fixing floor panel 53A to the opposite side. Plate-shaped insertion portions 41 hang down from both edges of the upper locking portion 42. The insertion portions 41 hang down from the upper locking portion 42 with dimensions slightly larger than the thickness of the floor panel 53. The insertion portions 41 are also formed to a thickness that allows them to pass through the gap S between the floor panels 53A and 53B. In this embodiment, the panel connecting member 40 is formed with a substantially uniform thickness.

A plate-shaped lower locking portion 43 extends from the lower end of each insertion portion 41, extending away from the upper locking portion 42 in a plan view. An upwardly extending folded portion 44 stands up from the tip of the lower locking portion 43.

As shown in Figure 20, a large recess is formed in the underside of the floor panel 53, and the lower peripheral edge 53f is provided with a convex strip. The lower locking portion 43 extends from the insertion portion 41 with a dimension larger than the width of the lower peripheral edge 53f. The folded portion 44, located below the adjacent floor panel 53B, extends from the underside of the adjacent floor panel 53B and faces the inner wall of the lower peripheral edge 53f.

To install the panel connecting member 40, first remove the adjacent floor panel 53B, then place the upper locking portion 42 of the panel connecting member 40 on the fixture fixed floor panel 53A. Then, by attaching the adjacent floor panel 53B, the panel connecting member 40 is held in place so that it cannot be removed. The anchor member 11 (an example of a fixing device) that secures the cabinet 1 to the fixture fixed floor panel 53A via the tip-over prevention device 6 is inserted through the screw insertion hole 91 of the tip-over prevention device 6 and pilot holes drilled in the floor finishing material 54, the upper locking portion 42, and the fixture fixed floor panel 53A.

When a force acts on the fixture fixed floor panel 53A in a lifting direction, causing the upper locking portion 42 to lift, the lower locking portion 43 of the panel connecting member 40 comes into contact with the underside (lower surface peripheral portion 53f) of the adjacent floor panel 53B, thereby dispersing the force acting on the retaining member 74 of the panel support body 70. This prevents the fixture fixed floor panel 53A from lifting up and damage to the retaining member 74. Furthermore, by having the folded portion 44 of the panel connecting member 40 catch on the lower surface peripheral portion 53f, the fixture fixed floor panel 53A can be more reliably prevented from lifting up.

<Modifications of panel connecting member>
21 and 22, the length of the upper locking portion 42A disposed on the fixture fixed floor panel 53A (the length in the direction perpendicular to the side to which the insertion portion 41 is connected) is shorter than the length of one side of the floor panel 53. In this embodiment, the length of the upper locking portion 42A is approximately one-fourth of the side of the floor panel 53. The insertion portion 41 is connected to one side of the upper locking portion 42A, and the opposite side of that side is disposed on the fixture fixed floor panel 53A. The configurations of the insertion portion 41, lower locking portion 43, and folded portion 44 are the same as those of the panel connecting member 40 of the above embodiment.

As shown in Figure 21, in this embodiment, two panel connecting members 40A are provided for each of the two furniture fixing floor panels 53A to which the cabinet 1 is fixed. The four panel connecting members 40A are provided near the four corners of the cabinet 1. The panel connecting members 40A can be provided using the same procedure as for providing the panel connecting members 40 described above.

As shown in Figure 22, the base 4 of the cabinet 1 is disposed above the upper locking portion 42A. When a force acts in the direction of lifting the fixture fixed floor panel 53A, the panel connecting member 40A functions in the same way as the panel connecting member 40, preventing the fixture fixed floor panel 53A from lifting up. Note that by disposing the cabinet 1 (base 4) above the upper locking portion 42A, the upward movement of the upper locking portion 42A is restricted. This prevents the panel connecting member 40A from coming off the floor panels 53A, 53B when a force acts in the direction of lifting the fixture fixed floor panel 53A.

<Outline of the third embodiment>
Next, a third embodiment of the present invention will be described with reference to the drawings. The cabinet 1, the fall prevention device 6, the double-layered floor F, and other structures are the same as those of the above embodiment, so detailed description thereof will be omitted.

As shown in Figures 23 and 24, the furniture anti-tip structure of this embodiment includes fixing screws 10 (fixing devices) for fixing the cabinet 1 to a furniture-fixed floor panel 53A selected from multiple floor panels 53, and a panel under-member 90 for preventing the floor panel 53 from lifting up. The configuration of the panel support 70 is the same as in the above embodiment. The panel under-member 90 is positioned from below the furniture-fixed floor panel 53A to below the adjacent floor panel 53B. The fixing screws 10 pass through the furniture-fixed floor panel 53A and connect to the panel under-member 90.

As shown in Figure 23, the cabinet 1 is placed on the floor F, straddling two fixture-fixed floor panels 53A. A panel under-member 90 is provided for each fixture-fixed floor panel 53A. The panel under-member 90 is made of metal plate and is disposed so as to extend from below the fixture-fixed floor panel 53A to below the pair of adjacent floor panels 53B that sandwich the fixture-fixed floor panel 53A.

According to the third aspect of the present invention, even if the fixture fixed floor panel 53A attempts to lift when the floor F shakes due to an earthquake or the like, the panel lower member 90 connected to the fixture fixed floor panel 53A hooks onto the underside of the adjacent floor panel 53B, preventing the fixture fixed floor panel 53A from lifting and preventing the cabinet 1 from tipping over. Furthermore, the panel lower member 90 can be realized with a simple structure formed, for example, from a metal pipe or sheet metal bending process, and can be attached to an existing double floor structure without any additional construction work. Therefore, this embodiment can prevent the cabinet 1 from tipping over at low cost and with simple work.

<Configuration of panel lower component>
23 and 24, the lower member body 92 of the panel lower member 90 is formed of a channel steel (C-beam) with a downward opening, and is configured so that its height can be adjusted with a pair of adjuster bolts 93. The lower member body 92 has an upper surface portion 94 extending in the longitudinal direction of the C-beam, a pair of side surfaces 95 hanging down from both side edges of the upper surface portion 94, and a pair of lower surface portions 96 extending inward from the lower end of each side surface portion 95.

An adjuster bolt 93 is screwed from below into one longitudinal end of one underside surface portion 96 and into the other longitudinal end of the other underside surface portion 96. The height position of the lower member main body 92 can be adjusted by changing the degree to which the adjuster bolt 93 is screwed into the underside surface portion 96.

The length of the lower member body 92 is longer than one side of the fixture fixed floor panel 53A. When the lower member body 92 is placed below the fixture fixed floor panel 53A, both longitudinal ends of the lower member body 92 are positioned below the pair of adjacent floor panels 53B that sandwich the fixture fixed floor panel 53A.

To install the panel lower member 90, first remove the fixture fixed floor panel 53A and place the panel lower member 90 on the floor slab 51 with the adjuster bolts 93 facing downward. Place both longitudinal ends of the panel lower member 90 below the adjacent floor panel 53B. Adjust the height position of the lower member body 92 with the adjuster bolts 93 so that the upper surface 94 is close to the underside of the adjacent floor panel 53B. Once the fixture fixed floor panel 53A is attached, the upper surface 94 of the panel lower member 90 is placed close to the underside of the fixture fixed floor panel 53A.

After laying the floor finishing material 54, the base 4 of the cabinet 1 is placed on top of the fixture fixed floor panel 53A. The fixing screws 10 are screwed from above through the screw insertion holes 91 of the anti-tip device 6, passing through the floor finishing material 54 and the fixture fixed floor panel 53A, and into the upper surface 94 of the panel lower member 90. The fixing screws 10 connect the cabinet 1 (anti-tip device 6) to the fixture fixed floor panel 53A and the panel lower member 90.

When a force acts in the direction of lifting the fixture fixed floor panel 53A, causing the panel lower member 90 to lift up, a portion of the lower member body 92 located below the adjacent floor panel 53B near the edge comes into contact with the underside of the adjacent floor panel 53B. This distributes the force acting on the retaining member 74 of the panel support body 70, preventing the fixture fixed floor panel 53A from lifting up and the retaining member 74 from being damaged.

<Modification of Panel Lower Member>
25 and 26 has a generally U-shaped cross section and includes a generally rectangular upper surface portion 94A, a pair of side surfaces 95A hanging down from both side edges of the upper surface portion 94A, and a pair of legs 93A extending downward from the lower end of the side surface portion 95A. The pair of legs 93A are spaced apart in the longitudinal direction of the upper surface portion 94A and the side surface portions 95A, and are provided for each pair of side surfaces 95A.

The panel lower member 90A is configured so that it can stand on its own on the floor slab 51 using four legs 93A. When the panel lower member 90A is placed on the floor slab 51, the upper surface 94A is positioned at a distance from the floor slab 51.

As shown in Figure 25, in this embodiment, a panel under-member 90A is provided for each of the two furniture fixing floor panels 53A to which the cabinet 1 is fixed. The length of the panel under-member 90A is longer than one side of the furniture fixing floor panel 53A.

To install the panel lower member 90A, first remove the fixture fixed floor panel 53A and place the panel lower member 90A on the floor slab 51 with the legs 93A facing downwards. Both longitudinal ends of the panel lower member 90A are placed below the adjacent floor panel 53B. The fixture fixed floor panel 53A is then attached. As shown in Figure 26 (A), the upper surface 94A of the panel lower member 90A is spaced apart from the undersides of the floor panels 53A and 53B.

After laying the floor finishing material 54, the base 4 of the cabinet 1 is placed on the fixture fixed floor panel 53A. The fixing screw 10 is screwed from above through the screw insertion hole 91 of the anti-tip device 6, passing through the floor finishing material 54 and the fixture fixed floor panel 53A, and into the upper surface 94A of the panel lower member 90A. As the fixing screw 10 continues to be screwed into the upper surface 94A, the panel lower member 90A rises and is pulled toward the floor panels 53A and 53B, until the upper surface 94A comes into contact with the underside of the fixture fixed floor panel 53A. In this way, the fixing screw 10 connects the cabinet 1 to the fixture fixed floor panel 53A and the panel lower member 90A via the anti-tip device 6.

Similar to the panel lower member 90 in the above embodiment, when a force acts in the direction of lifting the fixture fixed floor panel 53A, a portion of the panel lower member 90A near the edge comes into contact with the underside of the adjacent floor panel 53B. This distributes the force applied to the retaining member 74 of the panel support 70, preventing the fixture fixed floor panel 53A from lifting up and damage to the retaining member 74.

<Others>
Although the present invention has been described above with reference to the drawings, it is not limited to the above-described embodiment and can be embodied in various forms. The configuration of each part is not limited to the illustrated embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, the configurations described in the above-described embodiment and modified examples (notes, etc.) may be combined, and additions, omissions, substitutions, and other modifications of the configurations are also possible.

Furthermore, the applicable fixtures are not limited to cabinets; as mentioned in the technical field section, they can also include electrical and electronic equipment, vending machines, refrigerators, and product display shelves. In the above embodiment, the cabinet 1 is connected to the floor F (fixture fixed floor panel 53A) via the anti-tip device 6, but the fixtures may also be directly connected to the fixture fixed floor panel 53A. For example, the base 4 may be fixed to the fixture fixed floor panel 53A with fasteners such as screws.

Furthermore, although the base 7 of the tip-over prevention device 6 has a flat plate-like shape, it is possible to give the base 7 the 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 the furniture fixture anti-tip device 6, the fixing portion 9 has a screw insertion hole 91 through which the shank (fixing device) of the fixing screw 10 can be inserted, which is screwed into the floor F (furniture fixed floor panel 53A) from above. This configuration allows the anti-tip device 6 to be securely and easily fixed to the floor F by the simple process of inserting the fixing device into the screw insertion hole 91 of the anti-tip device 6 from above and connecting it to the floor F.

Furthermore, the fixing portion 9 is provided with multiple screw insertion holes 91. This configuration increases the options for inserting the fastener connecting the anti-tip device 6 to the floor F when the anti-tip device 6 is placed in a desired position on the floor F. For example, even if a component (e.g., rebar inside the floor) that makes it difficult to insert a fastener is present below one of the screw insertion holes 91 of the anti-tip device 6 placed in a desired position, the anti-tip device 6 can be fixed to the floor F using the other screw insertion holes 91 without changing its position. This allows the anti-tip device 6 to be fixed to the floor F at a desired position even when the insertion position of the fastener on the floor F is limited, thereby increasing the flexibility in the layout of fixtures to which the anti-tip device 6 is connected. It is also possible to firmly fix the anti-tip device 6 to the floor F (furniture fixing floor panel 53A) at multiple locations using multiple fasteners (e.g., fixing screws 10 and anchor members 11).

In the fixture tip-over prevention device 6, the plate includes a plate-shaped base 7 that contacts the floor surface, and the connecting portion 8 is formed by bending the plate and includes an upright portion 81 extending upward from the end of the base 7, a flange portion 82 extending outward from the upper end of the upright portion 81, and upper and lower engaging holes 83 provided in the flange portion 82. The connecting portion 8 and the fixture can be connected by inserting the shank of a connecting screw (adjuster member 23) attached upward to the bottom of the fixture through the engaging hole 83. This configuration allows the fixture tip-over prevention device 6 to be formed with a simple structure formed by bending and drilling the plate. This allows for a low-cost tip-over prevention device 6 that is easy to attach to fixtures.

Furthermore, the connecting screw may be configured as a screw-in type adjuster member 23 attached to the bottom of the fixture. In this manner, the screw-in type adjuster member 23 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 fixture base unit comprises a base 4 on which the fixture itself rests, and a fixture anti-tip device 6 attached to the bottom of the base 4. The fixture anti-tip device 6 comprises an elastic plate placed on the floor F below the base 4, and the plate includes multiple connecting portions 8 that connect to the fixture, and fixed portions 9 that are fixed to the floor F at positions between the multiple connecting portions 8 in a plan view. The fixture is equipped with the fixture anti-tip device 6 or the fixture base unit described above.

The above-mentioned fixture base unit and fixture are equipped with the fixture tip-over prevention device 6, making it 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.

This invention can be embodied in a fixture tip-over prevention device. Therefore, it has industrial applicability.

1. Cabinet (an example of furniture)
6 Fixture anti-tip device 7 Base 8 Connecting part 9 Fixing part 10 Fixing screw (an example of a fixing device)
11 Anchor member (an example of a fixing device)
40 Panel connecting member 40A Panel connecting member 41 Insertion portion 42 Upper locking portion 42A Upper locking portion 43 Lower locking portion 44 Folded portion 51 Floor slab (an example of a floor surface)
53 Fixture fixed floor panel 53A Fixture fixed floor panel 53a Edge portion 53e Corner portion 53B Adjacent floor panel 60 Panel restricting member 60A Panel restricting member 61 Insertion portion 61A Insertion portion 62 Upper locking portion 62A Upper locking portion 63 Lower locking portion 63a Cutout portion 63A Lower locking portion 64 Tilt suppressing portion 65 Adhesive member 70 Panel support body 70A Intermediate panel support body 71 Support leg 71a Flange portion 72 Support base portion 74 Pressing member 90 Panel lower member 90A Panel lower member 92 Lower member body 93 Adjuster bolt 93A Leg portion 94 Upper surface portion 94A Upper surface portion 95 Side portion 95A Side portion 96 Lower surface portion F Floor S Gap

Claims (7)

A structure for preventing furniture placed on a double floor having a plurality of floor panels laid on a floor surface via panel supports from tipping over,
a fixture for fixing the fixture to a fixture fixing floor panel selected from the plurality of floor panels;
A panel regulating member for preventing the fixture fixed floor panel from lifting up,
The panel support has a support base portion that projects laterally from the upper portion of the support leg that stands on the floor surface and supports the edge portion of the floor panel,
The panel regulating member has an insertion portion that passes vertically through the gap between the fixture fixed floor panel and the adjacent floor panel, an upper locking portion that extends from the upper end of the insertion portion toward the top of the fixture fixed floor panel, and a lower locking portion that extends from the lower end of the insertion portion toward the bottom of the support base portion.
Structure to prevent fixtures from tipping over. A structure for preventing furniture placed on a double floor having a plurality of floor panels laid on a floor surface via panel supports from tipping over,
a fixture for fixing the fixture to a fixture fixing floor panel selected from the plurality of floor panels;
and a panel connecting member for preventing the fixture fixed floor panel from lifting up,
The panel support body is configured to support an edge of the floor panel with a support base portion and to press the edge downward with a pressing member,
The panel connecting member has an insertion portion that passes vertically through the gap between the fixture fixed floor panel and the adjacent floor panel, an upper locking portion that extends from the upper end of the insertion portion toward the top of the fixture fixed floor panel, and a lower locking portion that extends from the lower end of the insertion portion toward the bottom of the adjacent floor panel.
Structure to prevent fixtures from tipping over. A structure for preventing fixtures placed on a double floor having a plurality of floor panels laid on a floor surface via panel supports from tipping over,
a fixture for fixing the fixture to a fixture fixing floor panel selected from the plurality of floor panels;
a panel lower member for preventing the floor panel from lifting up,
The panel support body is configured to support an edge of the floor panel with a support base portion and to press the edge downward with a pressing member,
The panel lower member is disposed from under the fixture fixed floor panel to under the adjacent floor panel next to it,
The fixture penetrates the fixture fixing floor panel and is connected to the panel lower member,
The panel lower member is not bolted to the floor surface.
Structure to prevent fixtures from tipping over. A fixture tip-over prevention device is provided between the fixture and the fixing device,
The fixture tip-over prevention device is
a resilient plate disposed on the fixture fixed floor panel below the fixture;
The plate includes a plurality of connecting portions that are connected to the fixtures, and a fixing portion that is fixed to the floor panel at a position between the plurality of connecting portions in a plan view,
The fixing portion is fixed to the fixture fixing floor panel by the fixing device.
A structure for preventing fixtures from tipping over as claimed in any one of claims 1 to 3. A fixture tip-over prevention structure that prevents fixtures placed on a double floor having a plurality of floor panels laid on the floor surface via panel supports from tipping over, wherein the fixtures are fixed to a fixture-fixed floor panel selected from the plurality of floor panels with fasteners, and the panel supports have support base portions that extend sideways from the tops of support legs erected on the floor surface and support the edges of the floor panels. A panel restricting member for preventing the fixture-fixed floor panel from lifting up is used in the fixture tip-over prevention structure,
The fixture fixing panel has an insertion portion that passes vertically through the gap between the fixture fixing floor panel and the adjacent floor panel, an upper locking portion that extends from the upper end of the insertion portion toward the top of the fixture fixing floor panel, and a lower locking portion that extends from the lower end of the insertion portion toward the bottom of the support base portion.
Panel control components used in fixtures to prevent them from tipping over. A fixture tip-over prevention structure that prevents fixtures placed on a double floor having a plurality of floor panels laid on the floor surface via panel supports from tipping over, wherein the fixtures are fixed to a fixture-fixed floor panel selected from the plurality of floor panels with fasteners, and the panel supports have a configuration in which the edges of the floor panels are supported by support base portions while the edges are pressed downward by pressing members. A panel connecting member for preventing the fixture-fixed floor panel from lifting up is used in the fixture tip-over prevention structure,
The fixture fixing panel has an insertion portion that passes vertically through the gap between the fixture fixing floor panel and the adjacent floor panel, an upper locking portion that extends from the upper end of the insertion portion toward the top of the fixture fixing floor panel, and a lower locking portion that extends from the lower end of the insertion portion toward the bottom of the adjacent floor panel.
Panel connecting member used in fixtures to prevent them from tipping over. A fixture tip-over prevention structure that prevents fixtures placed on a double floor having a plurality of floor panels laid on the floor surface via panel supports from tipping over, wherein the fixtures are fixed to a fixture-fixed floor panel selected from the plurality of floor panels with fixing devices, the panel support has a configuration in which the edge of the floor panel is supported by a support base portion while the edge is pressed downward by a pressing member, and the fixing device is a panel under-member for preventing the floor panel from lifting up, used in the fixture tip-over prevention structure that penetrates the fixture-fixed floor panel,
The fixture is arranged from under the fixture fixed floor panel to under the adjacent floor panel, and is connected to the fixture but is not bolted to the floor surface.
Panel bottom component used in fixtures to prevent them from tipping over.