JP7442797B2 - Seismic fall prevention device - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law (1) Sanshin Metal Industry Co., Ltd. has announced to Tsumori Partec Co., Ltd. that the product name Upguard is being applied to the seismic fall prevention device invented by Katsumi Hayashi, Akihiko Hashimoto, and Yushiki Ohashi. It was sold as a seismic unit set (product number 3139424000000-FMW) and a product name Upguard fall prevention bar (product number 3139573000000).・Date of sale: January 10, 2020 ・Place of sale: Tsumori Paltec Co., Ltd. (3-4-34 Futada-cho, Izumiotsu City, Osaka Prefecture)

The present invention relates to a seismic fall prevention device that prevents stored items from falling from shelves due to vibrations such as earthquakes.

It is known to install a fall prevention device on a shelf board on which stored items such as books are placed to prevent the stored items from falling from the shelf board due to vibrations such as an earthquake (Patent Documents 1 and 2).

Patent Document 1 discloses a swinging member with an arm that has a counterweight and is provided in pairs on both sides of a shelf board, and a swinging member with an arm that is connected to the ends of the swinging members on both sides of the shelf board and has a counterweight. and a regulation bar that is biased to swing in the direction of moving toward the article loading/unloading surface, and when an earthquake vibration is detected, the regulation bar advances to an appropriate height position in front of the storage space for stored items. is disclosed.

Further, Cited Document 2 describes a vibration-sensing fall prevention device in which a counterweight is swingably attached to a swinging member to change the position of the center of gravity with respect to the swinging member.

In the fall prevention device described above, the main body of the swinging member is housed in the case, and the arm protrudes from the opening on the front surface of the case.

Patent No. 3333475 Patent No. 6081342

The seismic fall prevention device is generally installed by fixing the left and right units to a shelf board and side plates such as shelf supports provided at both left and right ends of the shelf board. From the viewpoint of preventing stored items from falling, they are attached directly or indirectly to structural members such as columns and vertical beams. However, depending on the storage fixture to which the above-mentioned seismic fall prevention device is attached, there is no side plate such as a shelf holder, and the vertical bar provided on the side plate of the storage fixture protrudes from the front or side of the shelf board. There is. In such storage fixtures, when the left and right units are installed inside the vertical beam, it is difficult to hold the left and right units in parallel because a space is created between the left and right units and the side panels.

Furthermore, the installation spacing between the left and right units is determined by the spacing between the left and right vertical bars, and the length of the regulation bar is also determined by the spacing between the vertical bars. However, the protruding dimensions of the vertical bars vary depending on the storage fixture. If the regulation bar is cut to the required length, it can accommodate the spacing between the vertical bars, but if the mass of the regulation bar changes due to cutting, the regulation bar will not move to the regulation position at the set seismic intensity, and the swinging members including the counterweight will Adjustments will be necessary. This makes it difficult to standardize products.

In view of the above-mentioned background technology, the present invention has developed an earthquake-sensing type that can be extremely easily installed even in storage fixtures where there is no flat part on the side of the shelf board on which the left and right units are installed, and where the installation intervals are not constant. The purpose is to provide a fall prevention device.

That is, the present invention has the configurations described in [1] to [3] below.

[1] A seismic fall prevention device that is attached to a shelf board on which stored items are placed in a storage fixture,
a pair of seismic sensing units each having a swinging member disposed at both left and right ends of the shelf board and swingably supported by a shaft fitted in a bearing hole;
It is extendable and retractable in the longitudinal direction, and both ends of the longitudinal direction are connected to the ends of the swinging members of the left and right vibration sensing units, and the regulation position on the front side of the shelf board is adjusted based on the swinging of the swinging members. a regulation bar that is movable between the retracted position and the retracted position;
an adjuster that adjusts the distance from the side plate of the storage fixture to the vibration sensing unit;
A seismic fall prevention device characterized by comprising:

[2] The seismic fall prevention device according to item 1, which includes a back support bar that is longitudinally extendable and whose longitudinal ends are connected to the left and right seismic units.

[3] The adjuster includes a base plate that presses against the side plate of the storage fixture, a screw that is inserted through the base plate, and a receiving member that is disposed within the vibration sensing unit and engages with the screw, 3. The seismic fall prevention device according to item 1 or 2, wherein the distance from the side plate to the seismic unit is set according to the depth of engagement between the screw and the receiving member.

According to the seismic fall prevention device described in [1] above, the left and right seismic units can be held in parallel by adjusting the distance from the side plate of the storage fixture to the seismic unit using the adjuster. For this reason, if a reinforcing vertical bar etc. protrudes inward from the side panel of the storage fixture, the adjuster will hold the left and right seismic units parallel even if only part of the seismic unit can be fixed to the vertical bar etc. can. Moreover, the regulation bar is structured to expand and contract according to the distance between the left and right vibration sensing units, and the mass of the regulation bar is always constant regardless of the adjusted length, so the sensitivity to vibration of the swinging member can be changed. There's no need.

According to the seismic fall prevention device described in [2] above, the back support bar can prevent stored items from falling backward.

According to the seismic drop prevention device described in [3] above, by pressing the base plate of the adjuster against the side plate of the storage fixture and adjusting the engagement depth between the screw and the receiving member, the side plate of the storage fixture can be adjusted. The distance from the seismic unit to the seismic unit can be easily set.

1 is an overall perspective view of a seismic fall prevention device that is an embodiment of the present invention. FIG. 2 is a perspective view of a unit base constituting a seismic unit of the seismic fall prevention device of FIG. 1; FIG. 2 is a perspective view of a unit cover that constitutes a vibration sensing unit of the vibration sensing type fall prevention device shown in FIG. 1; FIG. 2 is a side view of the seismic unit of the seismic fall prevention device of FIG. 1; It is an enlarged view of the main part of a regulation bar. It is a figure which shows the method of adjusting the position of a seismic unit by an adjuster. FIG. 2 is a perspective view showing an example in which the seismic fall prevention device of FIG. 1 is installed on a shelf board of a cabinet. 8 is an enlarged view of the main part of FIG. 7. FIG.

[Seismic drop device]
FIGS. 1 to 8 show an embodiment of the seismic fall prevention device of the present invention. The vibration-sensing type fall prevention device of the present invention is installed in a storage fixture such as a cabinet that does not have a flat part on the side of the shelf board. In the following description, the front and rear directions are referred to as the "front" side for taking out stored items from the storage fixture, and the "back" side for the opposite side. Furthermore, regarding the left-right direction, the right-hand side toward the front of the cabinet or the like is referred to as "right," and the left-hand side is referred to as "left."

The seismic fall prevention device 1 includes a pair of left and right seismic sensing units 10A and 10B, a regulation bar 50, a back support bar 60, and an adjuster 70.

The vibration sensing units 10A and 10B are bilaterally symmetrical, and are housed in a vertical flat case in which a unit base 20 placed on the left and right end sides of the shelf board and a unit cover 40 placed on the center side are combined. Main functional parts including the swinging member 30 are housed inside. Although FIGS. 4 and 6 show the seismic unit 10A installed on the left side, the seismic unit 10B on the right side is similar to the seismic unit 10B on the left side, except that its constituent members are symmetrically shaped or arranged symmetrically. Since they have the same structure and the same functions as the seismic unit 10A, the seismic sensing units are labeled with "10A, 10B" in these figures. Also, in the following description, the vibration sensing units are denoted by numerals "10A, 10B".

As shown in FIG. 2, the unit base 20 includes a rectangular base plate 21 that forms the outer wall of the case, and a rear flange 22 and a bottom flange 23 that are bent inward from the rear and lower ends of the base plate 21. . Furthermore, three adjuster insertion holes 24 are bored at intervals near the upper end of the base plate 21.

As shown in FIG. 4, a swinging member 30 and a counterweight 36, which constitute the main functional parts, are attached to the base plate 21. Note that FIG. 4 shows a part of the internal members with solid lines when looking through the inside of the case.

The swinging member 30 is a plate-like body integrally formed with a substantially rectangular main body 31 and an arm 32 that projects forward from one corner of the main body 31 and is bent at an intermediate portion in the longitudinal direction, A circular bearing hole 33 into which the support shaft 34 is fitted is bored at the boundary between the main body part 31 and the arm part 32. Three bearing holes 35 for mounting a counterweight 36 are bored in the upper front side of the main body 31 so as to communicate with each other. Further, a regulation bar attachment hole 37 for attaching a regulation bar 50 is formed at the tip of the arm portion 32. The swinging member 30 is swingably supported by a support shaft 34 fitted in a bearing hole 33 and fixed to the base plate 21.

The counterweight 36 is a circular plate with a bearing hole bored in the center. The two counterweights 36 are arranged on both sides of the upper front side of the main body 31 of the swinging member 30, and the support shaft is fitted into one of the bearing holes 35 of the swinging member 30 and the bearing hole of the counterweight 36. By matching them together, they are swingably supported by the swinging member 30. Furthermore, if the mounting position of the counterweight 36 on the swinging member 30 can be changed, the sensitivity to vibrations can be adjusted by changing the mounting position of the counterweight 36. The mounting position of the counterweight 36 can be changed by providing bearing holes 35 at a plurality of locations in the swinging member 30. For example, the illustrated swinging member 30 has three bearing holes 35, which communicate with each other. Further, the shape and material of the counterweight are not limited, and the sensitivity to vibrations can be adjusted by changing these.

As shown in FIG. 3, the unit cover 40 includes a rectangular side cover portion 41 arranged parallel to the base plate 21 of the unit base 20, and a front surface that bends inward from the edges of the four sides of the side cover portion 41. It is a shallow cover in which a cover part 42, a top cover part 43, a rear cover part 44, and a bottom cover part 45 are integrally molded. The front side and upper side of the side cover part 41 are shorter than the front side and upper side of the base plate 21, and the front cover part 42 and the top cover part 43 are inclined in the outward opening direction. Further, a backrest bar mounting hole 46 is formed in the side cover portion 41, and a slit 47 is formed in the front cover portion 42 for allowing the tip portion of the arm portion 32 of the swinging member 30 to protrude outside the case. ing.

A channel member 48 having a U-shaped cross section is attached along the front-rear direction above the inner surface of the side cover portion 41 with both flanges thereof protruding from the side cover 41. Three blind nuts 49 are attached to the web of the channel material 48. The positions of the three blind nuts 49 correspond to the positions of the three adjuster insertion holes 24 of the unit base 20.

The unit cover 40 is placed over the unit base 20, the arm portion 32 of the swinging member 30 is passed through the slit 47 of the front cover portion 42, and the rear cover portion 44 and the bottom cover portion 45 of the unit cover 40 are attached to the rear flange of the unit base 20. 22 and bottom flange 23, and screw them together. As a result, the seismic sensing units 10A and 10B are assembled. Furthermore, in the assembled seismic sensing units 10A and 10B, the center line of the adjuster mounting hole 24 of the unit base 20 and the center line of the blind nut 49 of the unit cover 40 coincide.

As shown in FIGS. 1 and 5, the regulation bar 50 includes an intermediate bar 51 having a circular cross section, an outer cylindrical body 52 having an inner diameter larger than the outer diameter of the intermediate bar 51, and a width larger than the elongated hole 53. It also includes a fixing screw 54 with a large head diameter. A long hole 53 is bored in the circumferential surface of the outer cylindrical body 52. With the outer cylindrical body 52 covering both ends of the intermediate bar 51, fixing screws 54 inserted through the elongated holes 53 are engaged with the ends of the intermediate bar 51. When the fixing screw 54 is tightened to restrain the outer cylindrical body 52 with the head, the intermediate bar 51 and the outer cylindrical body 52 are fixed, and when the fixing screw 54 is loosened to release the restraint on the outer cylindrical body 52, the long hole is released. The intermediate bar 51 can be slid within a range of 53. Thereby, the length of the regulation bar 50 can be easily adjusted within the sliding range of the left and right outer cylinder bodies 52. Further, since the intermediate bar 51, the outer cylinder body 52, and the fixing screw 54 are always provided as constituent members of the regulating bar 50, the mass of the regulating bar 50 is always constant regardless of the adjusted length. The regulation bar 50 has the ends of the left and right outer cylindrical bodies 52 attached to the regulation bar attachment hole 37 at the tip of the arm part 32 of the swinging member 30. The length adjustment range of the regulating bar 50 in this example is approximately 130 mm.

Note that the expandable structure of the regulating bar is not limited to the above structure. Any structure that can be expanded or contracted without increasing or decreasing mass may be used.

The back support bar 60 includes an intermediate bar 61 having a circular cross section, an outer cylindrical body 62 having an elongated hole 63 and an inner diameter larger than the outer diameter of the intermediate bar 61, and a fixing screw 64 (see FIG. 8). The length can be adjusted using the same telescopic structure as the above-mentioned regulating bar 50. Further, the back support bar 60 is attached to the left and right outer cylinder bodies 62 using the back support bar attachment holes 46 of the unit cover 40. There are five back bar mounting holes 46 in the front and back direction, and one is selected depending on the depth dimension of the stored items. By attaching the back support bar 60, it is possible to prevent small stored items that are less than the depth of the shelf board from falling backward.

The back support bar 60 is a member that can be added arbitrarily, and the present invention also includes a vibration-sensing fall prevention device without a back support bar.

As shown in FIG. 6, the adjuster 70 includes a base plate 71, screws 72, and nuts 73, and is used to adjust the distance D from the side plate 104 of the storage fixture to the vibration sensing units 10A, 10B. This distance D is the protruding height of the vertical bar 102 provided on the side plate 104 of the storage fixture, and the vibration sensing units 10A and 10B installed on the left and right sides are held in parallel.
The adjuster 70 is assembled by attaching a nut 73 to a screw 72 passed through the center hole of the base plate 71, inserting the tip of the screw 72 into the adjuster insertion hole 24 of the base plate 21, and screwing it into the blind nut 49 of the unit cover 40. let Then, the distance D is set by turning the screw 72 to adjust the depth of engagement with the blind nut 49. The screws 72 and the blind nuts 49 are set so that the deeper they are engaged, the smaller the amount of protrusion of the screws 72 from the base plates 21 of the vibration sensing units 10A, 10B becomes, and the smaller the distance D becomes. The distance D is set so that the shallower the distance D is, the larger the amount of protrusion of the screw 72 becomes.

The distance D can be determined by, for example, first assuming the distance D and temporarily determining the positions of the vibration sensing units 10A and 10B, and adjusting the screw 72 of the adjuster 70 so that the distance D becomes larger. This can be determined by contacting the side plate 104. After setting the distance D from the base plate 71 to the vibration sensing units 10A, 10B by adjusting the screw 72, the distance D is fixed by tightening the nut 73 to the vibration sensing units 10A, 10B. The blind nut 49 corresponds to a "receiving member" in the present invention.

When the positions of the vibration sensing units 10A and 10B are determined, the lengths of the regulation bar 50 and the back support bar 60 are also determined, so these lengths are fixed by the method described above. If the lengths of the regulation bar 50 and the back support bar 60 are fixed, the distance between the left and right vibration sensing units 10A, 10B is fixed, so in this state, the base plate 71 of the left and right adjuster 70 can be pressed against the side plate 104. This allows the left and right vibration sensing units 10A and 10B to be stably held in parallel.

By setting the distance D in the manner described above, the left and right vibration sensing units 10A and 10B can be fixed in parallel to the vertical beam 102 provided on the side plate 104 of the storage fixture.

The adjustable range of the adjuster 70 can be adjusted by adjusting the engagement depth of the screw 72 with the blind nut 49, and can also be expanded by using screws of different lengths.

Further, the adjuster 70 is detachably attached to the vibration sensing units 10A and 10B.
[Installation and operation of seismic fall prevention device]
7 and 8 show examples in which the seismic fall prevention device 1 is installed on the shelf board 101 of the cabinet 100.

The cabinet 100 has vertical bars 102 and 103 with a rectangular cross section arranged at the left, right, front and rear four corners inside a side plate 104 (only the left end is shown), and shelf supports attached to the four vertical bars 102 and 103. The shelf board 101 is attached using the above. In such a cabinet 100, the vibration sensing units 10A and 10B are arranged inside the vertical beam 102. Further, the amount of protrusion of the vertical bars 102 and 103 from the side plate 104 varies depending on the cabinet and the like.

The seismic fall prevention device 1 is installed on the shelf board 101 of the cabinet 100 in the following manner.

First, loosen the fixing screws 54 and 64 of the regulation bar 50 and the backrest bar 60 to release the engagement between the intermediate bars 51 and 61 and the outer cylindrical bodies 52 and 62 to follow the positions of the vibration sensing units 10A and 10B. In this state, the base plates 21 of the unit bases 20 of the seismic sensing units 10A, 10B are brought into contact with the vertical beams 102 on the front side to determine the positions of the seismic sensing units 10A, 10B. By attaching the seismic adhesive mat 76 to the bottom surface of the seismic sensing units 10A, 10B, the seismic adhesive mat 76 can be interposed between the shelf board 101 and the bottom surface of the seismic sensing units 10A, 10B (see FIG. 6). ). Once the positions of the left and right vibration sensing units 10A, 10B are determined, the distance between the left and right vibration sensing units 10A, 10B is determined, so the lengths of the regulation bar 50 and the back support bar 60 are fixed. Thereafter, the screw 72 of the adjuster 70 is adjusted in the manner described above to press the base plate 71 against the side plate 104. The left and right vibration sensing units 10A and 10B are held parallel by the front side of the base plate 21 of the unit base 20 being supported by the vertical beam 102 and supported by the side plate 104 via the adjuster 70.

In the installation examples shown in FIGS. 7 and 8, in order to suppress the displacement between the adjuster 70 and the side plate 104 in the event of an earthquake, the base plate 71 is attached to the side plate 104 via an earthquake-resistant adhesive mat 75 of the same size as the base plate 71 of the adjuster 70. The distance from the side plate 104 to the vibration sensing units 10A, 10B is adjusted by the method described above. Therefore, in the examples of FIGS. 7 and 8, the thickness of the earthquake-resistant adhesive mat 75 is added to the distance to the earthquake sensing units 10A and 10B.

Although the above-mentioned adhesive seismic mats 75 and 76 have the effect of increasing installation stability, they are not essential components of the seismic fall prevention device of the present invention, and can be installed even if they are not used.

As shown by the solid line in FIGS. 1 and 4, the regulating bar 50 is normally in the lower retracted position and does not prevent the storage items from being taken in and out. As shown by the broken lines in FIGS. 1 and 4, when vibrations such as an earthquake occur, the swinging member 30 and the counterweight 36 swing, and the center of gravity of the swinging member 30 and the counterweight 36 is shifted from the support shaft 34. The main body 31 of the swinging member 30 rotates rearward about the support shaft 34, and the tip of the arm 32 moves upward. Therefore, the restriction bar 50 attached to the tip of the arm portion 32 is located at the upper restriction position.

The seismic fall prevention device 1 can accommodate the distance between the left and right seismic units 10A and 10B with both the adjuster 70 and the regulation bar 50, and the left and right seismic units 10A and 10B are held in parallel. Ru. Moreover, since the mass of the regulating bar 50 does not change even if the length of the regulating bar 50 is changed, there is no need to adjust the counterweight 36 when the length of the regulating bar 50 is changed, so that it can be easily installed. Note that the seismic fall prevention device 1 can be applied to obstacles other than the vertical bars 102 and 103 as long as they protrude inside the side plate 104.

INDUSTRIAL APPLICABILITY The present invention can be used as a fall prevention device that is installed on a shelf board of a storage fixture such as a cabinet that does not have a flat part on the side of the installation location to prevent stored items from falling in the event of an earthquake.

1...Seismic fall prevention device 10A, 10B...Seismic unit 20...Unit base 21...Base plate 24...Adjuster insertion hole 30...Swinging member 31...Main body part 32...Arm part 36...Counterweight 40...Unit cover 46... Back bar mounting hole 47...Slit 49...Blind nut (receiving member)
50...Regulation bar 60...Back bar 70...Adjuster 71...Base plate 72...Screw 73...Nut 100...Cabinet 101...Shelf board 102, 103...Vertical frame 104...Side plate

Claims (3)

A vibration-sensing fall prevention device that is attached to a shelf board on which stored items are placed in a storage fixture,
It has a swinging member that is disposed at both left and right ends of the shelf board and is swingably supported by a shaft part fitted in a bearing hole , and has a swinging member that is swingably supported by a shaft part fitted in a bearing hole, and is configured to prevent obstacles protruding into the inside of the side plate of the storage fixture. a pair of seismic sensing units that come into contact with each other;
It is extendable in the longitudinal direction and has an extendable structure at both ends , and both ends are connected to the ends of the swinging members of the left and right vibration sensing units, and the front side of the shelf board is moved based on the swinging of the swinging members. a regulation bar movable between a regulation position and a retracted position;
an adjuster that is attached to the seismic unit and that adjusts the distance from the side plate of the storage fixture to the seismic unit and comes into contact with the side plate ;
A seismic fall prevention device characterized by comprising: The seismic fall prevention device according to claim 1, further comprising a back support bar that is extendable and retractable in the longitudinal direction and whose longitudinal ends are connected to the left and right seismic units. The adjuster includes a base plate that presses against the side plate of the storage fixture, a screw that is inserted through the base plate, and a receiving member that is disposed within the vibration sensing unit and engages with the screw, and the screw and the receiving member are arranged in the seismic unit and engage with the screw. The seismic fall prevention device according to claim 1 or 2, wherein the distance from the side plate to the seismic unit is set according to the engagement depth of the members.

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