JP6739050B2 - Fall prevention tool - Google Patents

Description

The present invention relates to a fall prevention tool, and more particularly, to a fall prevention tool that prevents articles put on a shelf or articles placed on a table from falling due to an earthquake.

2. Description of the Related Art Conventionally, there is a fall prevention tool that prevents articles from falling from a shelf due to the shaking of an earthquake. For example, in JP-A-2014-18628, a pair of left and right side rails are vertically arranged on the front end faces of the left and right side plates of an open shelf, and a slide bar is installed between the pair of left and right side rails so as to be vertically slidable. A preventive device is disclosed. In this fall prevention tool, the lower end of the side rail is located above the shelf board, and the slide bar is supported above the bottom board, so that the articles placed on the shelf board jump forward due to the shaking of the earthquake. This is to prevent this.

However, the above-described conventional fall prevention tool has a drawback that the slide bar cannot be removed from the side rail when the slide bar is not used, and the aesthetics of the shelf is impaired.

JP, 2014-18628, A

The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide a fall prevention tool capable of removing the fall prevention bar when not in use or retracting to a place where it does not interfere.

According to the invention of claim 1,
A pair of left and right bar supports that can be mounted on the inner wall surfaces or front surfaces of the left and right side plates near the front end of the shelf so as to face each other upward from near the shelf plate on which the article is placed,
A pair of left side bar support and a right side bar support provided with a fall prevention bar that can be detachably installed horizontally.
The fall-prevention bar is provided with axially outward projecting portions from the left and right end portions and symmetrically formed projecting portions, and each projecting portion has a neck portion extending axially outward of the fall-preventing bar and a neck portion. And a locking portion extending in the radial direction or the diametrical direction from the tip of
Left bar support and the right bar support has a guide portion which is open in the left-right direction center direction of the shelf while being extended in the up and down direction or obliquely vertical direction, vertical left and right locking portions of the fall preventing bars It is formed so that it can be inserted into and removed from the guide portions of the left bar support and the right bar support through the openings in the state of being oriented vertically or diagonally vertically, and when the left and right locking parts are oriented horizontally or diagonally horizontally. It is formed so that it cannot be inserted or removed through the opening,
Left and right inside the opening in the middle of the guide part that extends vertically or diagonally in the vertical direction of the left bar support , and inside the opening in the middle of the guide that extends vertically or diagonally in the vertical direction of the right bar support. Symmetrically, there is a space that can rotate around the axis between the vertical or diagonal vertical direction and the horizontal or diagonal horizontal direction, and the lock receiving part that can lock the horizontal or diagonal horizontal direction To form the bar receiving space part of
The lower ends of the left and right guide parts extend below the lock receiving part, and the fall prevention bar can be retracted below the lock receiving part.
Is characterized by.
According to the invention of claim 2,
A pair of left side bar support and right side bar support, which can be mounted so as to face each other upward, at the end of the horizontal plate on which the article is placed,
A pair of left side bar support and a right side bar support provided with a fall prevention bar that can be detachably installed horizontally.
The fall-prevention bar is provided with axially outward projecting portions from the left and right end portions and symmetrically formed projecting portions, and each projecting portion has a neck portion extending axially outward of the fall-preventing bar and a neck portion. And a locking portion extending in the radial direction or the diametrical direction from the tip of
Left bar support and the right bar support has a guide portion which is open in the left-right direction center direction of the shelf while being extended in the up and down direction or obliquely vertical direction, vertical left and right locking portions of the fall preventing bars It is formed so that it can be inserted into and removed from the guide portions of the left bar support and the right bar support through the openings in the state of being oriented vertically or diagonally vertically, and when the left and right locking parts are oriented horizontally or diagonally horizontally. It is formed so that it cannot be inserted or removed through the opening,
Left and right inside the opening in the middle of the guide part that extends vertically or diagonally in the vertical direction of the left bar support , and inside the opening in the middle of the guide that extends vertically or diagonally in the vertical direction of the right bar support. Symmetrically, there is a space that can rotate around the axis between the vertical or diagonal vertical direction and the horizontal or diagonal horizontal direction, and the lock receiving part that can lock the horizontal or diagonal horizontal direction To form the bar receiving space part of
The lower ends of the left and right guide parts extend below the lock receiving part, and the fall prevention bar can be retracted below the lock receiving part.
Is characterized by.
According to the invention of claim 3,
The guide part was opened upward and to the center of the shelf in the left-right direction,
Is characterized by.

According to one aspect of the present invention, a pair of left side bar support and right side bar support, which face the inner wall surfaces or front surfaces of the left and right side plates near the front end of the shelf and face each other upward from near the shelf plate on which an article is placed. The left and right bar supports, insert the left and right protrusions of the fall-prevention bar vertically or diagonally vertically into the guides provided in the vertical direction on the left and right bar supports, and insert the guides. In the bar receiving space formed in the middle of the rack, the projecting part is turned sideways or diagonally sideways and locked to the lock receiving part so that it falls between the left and right side plates near the front end of the shelf to a position higher than the shelf plate. A preventive bar can be installed to prevent an article on the shelf from falling when it moves in an earthquake.
Also, the lower ends of the left and right guide parts are extended below the lock receiving part, and the fall prevention bar can be retracted below the lock receiving part, so that articles can be taken in and out of the shelf board. , The fall prevention bar can be kept out of the way.
According to another aspect of the present invention, the fall prevention bar can be installed at a position higher than the horizontal plate at the end of the horizontal plate such as a table or desk on which the article is placed, and the bar is placed on the horizontal plate. It is possible to prevent the article from falling when it moves in an earthquake .

FIG. 1 is a partially omitted perspective view showing a use state of a shelf with a fall prevention tool according to the present invention (Example 1). It is the perspective view which abbreviate|omitted and which expands and shows the circumference|surroundings of the left side bar support tool in FIG. 3(1) is a front view of the left bar support in FIG. 2, (2) is a right side view, and (3) is a plan view. 4(1) is a front view of the support body in FIG. 2, (2) is a right side view, and (3) is a plan view. 5(1) is a front view of the cover plate in FIG. 2, (2) is a right side view, and (3) is a plan view. FIG. 3 is an assembly view of the left bar support device of FIG. 2. It is the perspective view which abbreviate|omitted and expands and shows the circumference|surroundings of the right side bar support tool in FIG. 8(1) is a front view of the left bar support in FIG. 7, (2) is a right side view, and (3) is a plan view. 9(1) is a front view of the support main body in FIG. 7, (2) is a right side view, and (3) is a plan view. 10(1) is a front view of the cover plate in FIG. 7, (2) is a right side view, and (3) is a plan view. FIG. 8 is an assembly view of the right side bar support of FIG. 7. It is a perspective view of the fall prevention bar in FIG. 13 (1) is a front view of the left protruding portion in FIG. 12, (2) is a plan view, and (3) is a left side view. 14(1) is a front view of the right protruding portion in FIG. 12, (2) is a plan view, and (3) is a right side view. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the usage method of a fall prevention tool. It is explanatory drawing of the modification of a fall prevention bar. It is explanatory drawing of the attachment method of a fall prevention bar. It is explanatory drawing of the attachment method of a fall prevention bar. It is explanatory drawing of the other usage of a fall prevention tool.

Hereinafter, the best mode of the present invention will be described based on examples.

An embodiment of the present invention will be described with reference to FIGS. 1 is a partially omitted perspective view showing a use state of a shelf with a fall prevention tool according to the present invention, FIG. 2 is an enlarged perspective view showing a left side bar support tool in FIG. 1, and FIG. ) Is a front view of the left bar support in FIG. 2, (2) is a right side view, (3) is a plan view, (1) in FIG. 4 is a front view of the support body in FIG. 3, and (2) is Right side view, (3) is a plan view, (1) of FIG. 5 is a front view of the cover plate in FIG. 3, (2) is a right side view, (3) is a plan view, and FIG. 6 is an assembly of FIG. 7 is an external perspective view showing the right side bar support in FIG. 1 in an enlarged manner, (1) of FIG. 8 is a front view of the right side bar support of FIG. 7, (2) is a right side view, (3 8) is a plan view, FIG. 9(1) is a front view of the support body in FIG. 8, (2) is a left side view, (3) is a plan view, and (1) of FIG. 10 is a cover plate in FIG. Front view, (2) left side view, (3) plan view, FIG. 11 is an assembly view of FIG. 7, FIG. 12 is an external perspective view of the fall prevention bar in FIG. (1) is a front view of the left protruding portion in FIG. 12, (2) is a plan view, (3) is a side view, and (1) of FIG. 14 is a front view of the right protruding portion in FIG. , (2) is a plan view and (3) is a side view.

In FIG. 1, reference numeral 1 denotes an open shelf, and a plurality of horizontally arranged shelf plates 4, 5,... Are fixed to the upper and lower sides of the left and right side plates 2, 3. The front end surface 4a of the shelf plate 4 is retracted slightly rearward from the front end surfaces 2a and 3a of the side plates 2 and 3. Near the front ends of the inner wall surfaces 2b, 3b of the side plates 2, 3, a pair of left and right left side bar supports 10 and right side bar supports 40 are symmetrically opposed to each other from the left and right ends of the front end of the shelf plate 4 upward. The fall prevention bar 60 is bridged between the left side bar support tool 10 and the right side bar support tool 40. The left bar support 10, the right bar support 40, and the fall prevention bar 60 constitute a fall prevention device according to the present invention.

The left side bar support 10 is configured as shown in FIGS. Among these, 11 is a box-shaped support body, which is made of plastic and has a stepped lower part and a triangular mountain-shaped upper part. First, the guide groove 12 extending straight upward from the side, then bent in a V shape and extending obliquely upward and rearward, and near the opening 13 obliquely upward and rearward of the guide groove 12. A bar receiving space 15 having a bell-shaped cross section is provided, and three screw holes 18 are provided around the guide groove 12 in FIG. 4B.

In the guide groove 12, the groove width from the opening 13 to the bar receiving space 15 is narrow w, and from the outlet 15a of the bar receiving space 15 to the middle of the inclined passage 12A, the groove width is 1.0 to 1 times w. After gradually widening in the range of about 4 times, it is formed to a constant width of about 1.4 times w to the upper end of the vertical passage part 12B, and the groove width of the vertical passage part 12B is 1.4 times w. It is formed to a constant width of about 1.2 times. The height H of the bar receiving space 15 in the groove direction is formed to be about three times larger than w. Further, a cross section of about 1/3 of the upper part of the bar receiving space 15 viewed in the groove direction is formed along an arc of radius W/2. The guide groove 12 is formed from the opening 13 to the outlet 15a of the bar receiving space 15 so as to pass through the line-symmetrical bell shape of the bar receiving space 15 in an obliquely vertical direction from the apex side along the line of symmetry. After passing through the outlet 15a of the bar receiving space 15, the inclined passage 12A and the subsequent vertical passage 12B are bent in a V shape and extended to near the lower end of the support body 11.
The guide groove 12 and the bar receiving space 15 are open to the right side surface 11b of the support body 11. The guide groove 12 and the bar receiving space 15 have the same depth E and are formed to be slightly larger than w. A step portion 19 is formed on the back surface side of the lower end portion of the support tool body 11 and can be fitted into the upper corner of the left front end portion of the shelf board 4.

2 and 3, reference numeral 20 denotes a cover plate made of plastic and having a lower portion with a stepped shape and an upper portion formed in a triangular mountain shape, and as shown in FIG. The guide slit 21 extends downward in a downward direction and has screw holes 22 arranged at three locations around the guide slit 21. Each screw hole 22 is provided at a position corresponding to the screw hole 18 of the support body 11. A step portion 25 is formed at the lower end portion on the rear surface side of the cover plate 20 and can be fitted into the upper corner of the front end portion of the shelf plate 4. The step portion 25 is formed in the same shape as the step portion 19 of the support body 11.

The guide slit 21 is formed by bending in the same direction as the guide groove 12 of the support body 11 of FIG. 3, and the vertical slit portion following the inclined slit portion 21A starting from the opening 23 slightly rearward near the upper end. It is bent in a V shape by 21B and extends to near the lower end of the cover plate 20. In the inclined slip portion 21A, the opening 23 at the upper end in a side view coincides with the opening 13 of the guide groove 12, and overlaps from the opening 13 of the guide groove 12 to the lower end of the inclined passage portion 12A. The vertical slit portion 21B overlaps the vertical passage portion 12B of the guide groove 12 (see FIG. 2). However, the lower end of the guide slit 21 is located slightly above the lower end of the guide groove 12 of the support body 11.
The guide groove 12 of the support body 11 and the guide slit 21 of the cover plate 20 form a guide portion 26. The guide portion 26 is opened upward by the opening 13 at the upper end of the guide groove 12 and the opening 23 at the upper end of the guide slit 21. Also, the guide slit 21 opens to the center of the open shelf 1 in the left-right direction.

FIG. 6 is an explanatory view of the assembling method of the left bar support tool 10, in which the left side surface 11c of the support tool body 11 is applied to the inner wall surface 2b of the side plate 2 and the step portion 19 is fitted to the upper corner of the left end portion of the shelf board 4. , The cover plate 20 is placed on the right side surface 11b of the support body 11 so that the screw holes 18 and 22 are aligned with each other, and the three screws 27 are passed through the screw holes 22 and then screwed into the screw holes 18. The inner wall surface 2b of 2 is detachably screwed.

The right bar support 40 is constructed as shown in FIGS. Among them, 41 is a box-shaped support body which is made of plastic and has a stepped lower part and a triangular mountain-shaped upper part, and as shown in FIG. 9, opens obliquely upward and rearward and rightward, Near the guide groove 42, which first extends straight upward from the lower end side, and then bends in a V shape and extends obliquely upward and rearward, and the opening 43 obliquely upward rearward of the guide groove 42. 9 is provided with a bar receiving space portion 15 having a bell-shaped cross section, and screw holes 48 provided at three locations around the guide groove 42 in FIG. 9B.

In the guide groove 42, the groove width from the opening 43 to the bar receiving space 45 is narrow w, and from the outlet 45a of the bar receiving space 45 to the middle of the inclined passage 42A, the groove width is 1.0 to 1 times w. After gradually widening in the range of about 4 times, a constant width of about 1.4 times w is formed to the upper end of the vertical passage portion 42B, and the groove width of the vertical passage portion 42B is 1.4 times w. It is formed to a constant width of about 1.2 times. The height H of the bar receiving space 45 in the groove direction is formed to be approximately three times larger than w. In addition, a cross section of about 1/3 of the upper portion of the bar receiving space portion 45 when viewed in the groove direction is formed along an arc having a radius W/2. The guide groove 42 is formed from the opening 43 to the outlet 45a of the bar receiving space portion 45 so as to penetrate the line-symmetrical bell shape of the bar receiving space portion 45 obliquely in the vertical direction along the line of symmetry from the apex side. After passing through the outlet 45a of the bar receiving space 45, the inclined passage 42A and the succeeding vertical passage 42B are bent in a V-shape and extend to near the lower end of the support body 41.
The guide groove 42 and the bar receiving space 45 are opened to the left side surface 41b of the support body 11. The guide groove 42 and the bar receiving space 45 have the same depth E and are formed to be slightly larger than w. A step portion 49 is formed on the back surface side of the lower end portion of the support body 41, and can be fitted into the upper corner of the right front end portion of the shelf board 4.

7 and 8, reference numeral 50 denotes a cover plate which is made of plastic and has a lower portion with a stepped shape and an upper portion formed into a triangular mountain shape. As shown in FIG. The guide slit 51 extends downward in a downward direction and has screw holes 52 provided at three locations around the guide slit 51. Each screw hole 52 is provided at a position corresponding to the screw hole 48 of the support body 41. A step portion 55 is formed at the lower end portion on the rear surface side of the cover plate 50, and can be fitted into the upper corner of the front end portion of the shelf plate 4. The step portion 55 is formed in the same shape as the step portion 49 of the support body 41.

The guide slit 51 is formed by bending in the same direction as the guide groove 42 of the support body 41 of FIG. 9, and the vertical slit portion that follows the inclined slit portion 51A starting from the opening 53 slightly rearward near the upper end. It is bent in a V-shape by 51B and extends near the lower end of the cover plate 50. In the inclined slip portion 51A, the opening 53 at the upper end in a side view coincides with the opening 43 of the guide groove 42, and overlaps from the opening 43 of the guide groove 42 to the lower end of the inclined passage portion 42A. The vertical slit portion 51B overlaps the vertical passage portion 42B of the guide groove 42 (see FIG. 8). However, the lower end of the guide slit 51 is located slightly above the lower end of the guide groove 42 of the support body 41.
The guide groove 42 of the support body 41 and the guide slit 51 of the cover plate 50 constitute a guide portion 56. The guide portion 56 is opened upward by the opening 43 at the upper end of the guide groove 42 and the opening 53 at the upper end of the guide slit 51. In addition, the guide slit 51 opens in the center of the open shelf 1 in the left-right direction.

FIG. 11 is an explanatory view of the method for assembling the right bar support 40, in which the right side surface 41c of the support body 41 is applied to the inner wall surface 3b of the side plate 3 and the step 49 is fitted to the upper corner of the right end of the shelf plate 4. The cover plate 50 is placed on the left side surface 41b of the support body 41 so that the screw holes 48 and 52 are aligned with each other, and the three screws 27 are passed through the screw holes 52 and then screwed into the screw holes 48, and the side plate of the shelf 1 is inserted. The inner wall surface 3b of 3 is detachably screwed.

As shown in FIG. 12, the fall prevention bar 60 in FIG. 1 is an outer cylinder 61 in which the surface of a metal pipe made of aluminum, steel or the like is covered with a plastic film, and the inner cylinder 61 can be inserted into and removed from the outer cylinder 61 so that aluminum, steel, etc. The inner rod 62 is formed by coating the surface of the metal pipe with a plastic film. Screw holes 63 are formed at three positions in the outer cylinder 62 which are spaced apart in the axial direction, and a set screw 64 is inserted into the desired one from the outside and screwed into the inner rod 62. By fixing the inner rod 62 and the inner rod 62, the fall prevention bar 60 can be adjusted to a desired length.
The closed end portion of the outer cylinder 61 on the left end side is made of a T-shaped plastic projecting portion 70 in a plan view, and the closed end portion of the inner rod 62 on the right end side is made of a T-shaped plastic projection in a plan view. The installation portion 80 is fixed. The protruding portions 70 and 80 are formed symmetrically. The left protruding portion 70 has a cylindrical neck portion 73 protruding outward from the center of the outer cylinder 61 in the axial direction, and a prismatic protruding portion extending from the tip of the neck portion 73 in a diameter direction perpendicular to the axial direction. It comprises a locking portion 74.

The outer diameter C1 of the outer cylinder 61 is formed to be larger than the width w of the guide groove 12 and the openings 13 and 23 of the guide slit 22, the outer diameter C2 of the neck portion 73 is smaller than w, and the axial length D1 is the cover plate. It is formed slightly longer than the thickness d1 of 20 (see FIG. 5A). The locking portion 74 has a length L in the radial direction when viewed from the axial center of the neck portion 73, and 2L is formed to be much larger than w and slightly smaller than W. Further, the axial length D2 of the locking portion 74 is formed to be shorter than the depth E (see FIG. 4A) of the guide groove 12 and the bar receiving space portion 15. Further, the height h of the locking portion 74 is formed to be the same as the outer diameter C2 of the neck portion 73. The locking portion 74 is rotatable about its axis in the bar receiving space 15 of the left-hand support main body 11.

The right side protruding portion 80 is formed in the same shape as the left side protruding portion 70, and as shown in FIG. 14, a columnar neck portion 83 and a neck portion 83 protruding from the outside center of the inner rod 62 to the outside in the axial direction. It is composed of a prismatic locking portion 84 protruding from the tip end of the shaft in a diametrical direction perpendicular to the axial direction.
The outer diameter C3 of the inner rod is formed larger than the width w of the guide groove 42 and the openings 43 and 53 of the guide slit 51, the outer diameter C2 of the neck portion 83 is smaller than w, and the axial length D1 is the cover plate 50. Is slightly longer than the thickness d1 (see FIG. 10(1)). The locking portion 84 has a length L in the radial direction when viewed from the axial center of the neck portion 83, and 2L is formed to have a size far larger than w and slightly smaller than W. Further, the axial length D2 of the locking portion 84 is formed shorter than the depth E (see FIG. 9A) of the guide groove 42 and the bar receiving space portion 45. Further, the height h of the locking portion 84 is formed to be the same as the outer diameter C2 of the neck portion 83. The locking portion 84 is rotatable around its axis in the bar receiving space 45 of the right support main body 41.
The left side bar support tool 10, the right side bar support tool 40, and the fall prevention bar 60 constitute a fall prevention tool.

Next, with reference to FIGS. 1 and 15 to 22, a method of using the fall prevention tool configured as described above will be described.
In addition, the step portions 19 and 25 are fitted in advance to the upper corners of the left end portion of the front end of the shelf plate 4 of the open shelf 1, and the left bar support device 10 is attached to the left side plate 2 by the three setscrews 27. It is attached to the inner wall surface 2b, and the step portions 49 and 55 are fitted in the upper corners of the right end portion of the front end of the shelf board 4 so that the right bar support tool 40 causes the right side bar plate 40 to move by the three setscrews 57. It is assumed to be mounted on the inner wall surface 3b of the. Further, the length of the fall prevention bar 60 is such that the neck portions 73 and 83 of the left and right protruding portions 70 and 80 in the horizontal direction are the thickness portion of the cover plate 20 of the left side bar support tool 10 and the cover of the right side bar support tool 40. It is assumed that the neck portions 73 and 83 have already been adjusted to a length such that the neck portions 73 and 83 can be inserted into and removed from the guide slits 21 and 51 when the plate 50 is reached.

In order to prevent the articles 90, 91,... Placed on the shelf board 4 from falling off the shelf board 4 due to an earthquake, the user holds the fall prevention bar 60 in his hand and holds the horizontal and left and right engaging portions 70, 80. The projecting portions 72 and 82 of the left-side bar supporting tool 10 and the right-side bar supporting tool 40 from diagonally upper rear to diagonally lower front, and the left engaging portion 74. Is inserted into the guide groove 12 through the opening 13 of the left support body 11, the neck 73 is inserted through the opening 23 of the cover plate 20 into the guide slit 21, and the right locking portion 84 is inserted through the opening 43 of the right support body 41. It is inserted into the guide groove 42, and the neck portion 83 is inserted into the guide slit 51 from the opening 53 of the cover plate 50 (see arrow A in FIG. 15 and arrow A in FIG. 20(1)).

Then, the locking portion 74 on the left side enters the bar receiving space portion 15 (see FIGS. 16 and 20(2)), and the locking portion 84 on the right side enters the bar receiving space portion 45. The locking portions 74, 84 are turned 90 degrees about the axis so that the locking portions 74, 84 are oriented diagonally laterally (in this case, diagonally backward laterally) (see FIGS. 17 and 20(3)), and the locking receiving portion 15b at the bottom of the bar receiving space portion 15 is provided. The locking portion 74 is placed on (see FIGS. 18 and 21(1)), the locking portion 84 is placed on the bottom of the locking receiving portion 45b on the bottom of the bar receiving space 45, and the hand is released. Then, between the left side bar support tool 10 and the right side bar support tool 40, the fall prevention bar 60 is horizontally installed at a position distant upward from the shelf board 4 (see FIG. 1). Even if the shelves 1 sway and the tall articles 90, 91,... Move on the shelf board 4, the shelves 1 hit the fall prevention bar 60 located at a high position, so that the fall prevention is surely achieved.

Even if the fall prevention bar 60 moves vertically and horizontally due to shaking of the earthquake or collision of the articles 90, 91,..., The locking portion 74 hits the inner side walls 15c and 15d of the bar receiving space 15 and the cover plate 20. The locking portion 84 does not come off the left bar support tool 10 and the right bar support tool 40 by hitting the inner walls 45c, 45d of the bar receiving space 45 and the cover plate 50.

If the articles 90, 91,... Are to be taken out from the shelf board 4 to the outside, hold the fall prevention bar 60 and rotate it 90 degrees around the axis so that the locking portions 74, 84 are diagonally oriented vertically (FIG. 16, 20(3)), the locking portion 74 is inserted from the outlets 15a, 45a of the bar receiving spaces 15, 45 into the inclined passage portions 12A, 42A of the guide grooves 12, 42 (see FIG. 21(2)). Then, it moves to near the upper ends of the vertical passages 12B and 42B through the inclined passages 12A and 42A of the guide grooves 12 and 42, and during this time, the orientations of the locking portions 74 and 84 are changed to near vertical (FIG. 17, 18, FIG. 21(3), and FIG. 22(1)), by moving to the bottoms 12b, 42b of the vertical passage portions 12B, 42B and releasing the hands, lower the shelf board 4 to the position of the front end surface 4a. The retracted state is set (see FIGS. 19 and 22(2)). Thus, the articles 90, 91,... Mounted on the shelf board 4 can be taken out or the articles can be put on the shelf board 4 from the outside without being obstructed by the fall prevention bar 60.

When the fall prevention bar 60 is not used, the locking portions 74 and 84 are diagonally oriented vertically, and the projecting portions 70 and 80 are moved diagonally rearward and upward in the guide portions 26 and 56 to open the openings 13 and 23. , 43 and 53, and pull out upward.

According to this embodiment, with respect to the inner wall surfaces 2b and 3b of the left and right side plates 2 and 3 near the front end portion of the open shelf 1, the shelf boards 4 on which the articles 90, 91,... The pair of left and right bar supports 10 and 40 is detachably mounted so as to be opposed to each other, and the pair of left and right bar supports 10 and 40 are dropped into the guide portions 26 and 56 vertically provided on the left and right bar supports 10 and 40. The left and right projecting portions 70, 80 of the prevention bar 60 are inserted in a slanting vertical direction, and the locking portions 72, 82 are slanted laterally in the bar receiving space portions 15 and 45 formed in the middle of the guide portions 26, 56. By locking the locking receiving portions 15b and 45b, the fall prevention bar 60 can be installed horizontally at a position higher than the shelf board 4 between the left and right side plates 2 and 3 near the front end of the open shelf 1. It is possible to prevent the articles 90, 91,... Mounted on the shelf board 4 from dropping when they move due to an earthquake.
Further, since the guide portions 26 and 56 are opened obliquely upward, the fall prevention bar 60 can be easily removed from the open shelf 1.
Further, the lower end portions of the left and right guide portions 26, 56 are extended below the lock receiving portions 15b, 45b, and the fall prevention bar 60 is located on the front surface 4a of the shelf board 4 below the lock receiving portions 15, 45. By allowing the articles 90, 91,... To be put in and taken out from the shelf board 4, it is possible to prevent the fall prevention bar 60 from getting in the way.

In addition, in the above-described embodiment, the case where the left bar support and the right bar support are attached to the inner wall surfaces of the left and right side plates 2 and 3 of the open shelf by three screws 27 has been described as an example. The invention is not limited to this, and the left side surface of the support body 11 is attached to the inner wall surface 2b of the side plate 2 with a double-sided adhesive tape, and the right side surface of the support body 41 is inside the side plate 3 with a double-sided adhesive tape. It may be attached to the wall surface 3b. In this case, in this case, the screw 27 in FIG. 6 may have a length such that the cover plate 20 can be screwed to the support body 11, and similarly, the screw 57 in FIG. It suffices if the length is such that it can be screwed to 41.
Further, although the length of the fall prevention bar is adjustable, it may be fixed.
Further, as shown in the fall prevention bar 60A of FIG. 23, the whole may be formed in a plate shape and the protruding portions 70 and 80 may be formed at the left and right end portions.
In addition, a substantially T shape is formed by a neck portion that is provided with projections provided at both ends of the fall prevention bar and extends outward in the axial direction of the fall prevention bar, and a locking portion that extends diametrically from the tip of the neck portion. However, it may be formed in a substantially L-shape having a neck portion and a locking portion extending in the radial direction from the tip of the neck portion.
Of the projecting portions at the left and right ends, one may have a substantially T-shape and the other may have a substantially L-shape.

Further, in the above-described embodiment, the fall prevention bar 60 is inserted into and removed from the guide portions 26 and 56 through the openings 13 and 23 at the upper end of the left bar support tool 10 and the openings 43 and 53 at the upper end of the right bar support tool 40. Although the case has been described, the present invention is not limited to this, and the guide portions 26 and 56 are inserted into and removed from the guide portions 26 and 56 through the guide slits 21 and 41, which are openings facing the center in the left-right direction of the open shelf 1. It may be done.
Specifically, when the fall prevention bar 60 is set on the left bar support tool 10 and the right bar support tool 40, for example, as shown in FIG. The stoppers 74 and 84 are oriented vertically, and the right locking portion 84 is inserted into the lower end portion of the guide portion 56 from near the lower end of the guide slit 41 of the right bar support 40 (see arrow X in FIG. 24). Then, the left locking portion 74 is inserted into the lower end portion of the guide portion 26 from near the lower end of the guide slit 21 of the left bar support 10 while the fall prevention bar 60 is horizontal (see arrow Y in FIG. 25). When removing the fall prevention bar 60 from the left side bar support tool 10 and the right side bar support tool 40, the procedure may be reversed.

As shown in FIGS. 24 and 25, the fall prevention bar 60 is inserted into the guide portions 26 and 56 through the guide slits 21 and 41, which are the openings facing the center in the left-right direction, which are provided in the left bar support tool 10 and the right bar support tool 40. Since it can be inserted and removed freely, the openings 13 and 23 at the upper end of the left bar support 10 and the openings 43 and 53 at the upper end of the right bar support 40 can be omitted and closed.

Further, in the above-described embodiment, the case where the open shelf 1 is equipped with the fall prevention tool has been described as an example, but the present invention is not limited to this, and as shown in FIG. The horizontal plate 100 is mounted on the end portion of the horizontal plate 100 on which an article such as a table or a table is placed with a space provided therebetween, and the step portions 25 and 55 of the left bar support 10 and the right bar support 40 are attached with a double-sided adhesive tape or the like. You may try to prevent the fall of the article from.
Further, in the above-mentioned embodiment, the guide portion above the vertical passage portion, the guide groove, the guide slit, and the bar receiving space portion are provided obliquely in the vertical direction. When the locking part of the projecting part is placed vertically and is inserted into and removed from the guide part from the opening, and the locking part of the protruding part is placed horizontally on the lock receiving part of the bar in the bar receiving space, the guide The protruding portion may not be able to be inserted and removed from the portion.

INDUSTRIAL APPLICABILITY The present invention is applicable to bookshelves, cupboards, and other shelves with open front surfaces, desks, tables, and the like.

1 Open Shelf 2, 3 Side Plates 2b, 3b Side Wall Surface 4 Shelf Plate 10 Left Bar Support Tool 11, 41 Support Tool Body 12, 42 Guide Grooves 13, 23, 43, 53 Opening 15, 45 Bar Receiving Space 15b, 45b Stop receiving portion 20, 50 Cover plate 21, 51 Guide slit 26, 56 Guide portion 40 Right side bar support 60 Fall prevention bar 70, 80 Projecting portion 74, 84 Locking portion

Claims (3)

A pair of left and right bar supports that can be mounted on the inner wall surfaces or front surfaces of the left and right side plates near the front end of the shelf so as to face each other upward from near the shelf plate on which the article is placed,
A pair of left side bar support and a right side bar support provided with a fall prevention bar that can be detachably installed horizontally.
The fall-prevention bar is provided with axially outward projecting portions from the left and right end portions and symmetrically formed projecting portions, and each projecting portion has a neck portion extending axially outward of the fall-preventing bar and a neck portion. And a locking portion extending in the radial direction or the diametrical direction from the tip of
Left bar support and the right bar support has a guide portion which is open in the left-right direction center direction of the shelf while being extended in the up and down direction or obliquely vertical direction, vertical left and right locking portions of the fall preventing bars It is formed so that it can be inserted into and removed from the guide portions of the left bar support and the right bar support through the openings in the state of being oriented vertically or diagonally vertically, and when the left and right locking parts are oriented horizontally or diagonally horizontally. It is formed so that it cannot be inserted or removed through the opening,
The middle of the opening inside the left-side bar support in the vertical direction or an oblique vertical direction extends vertically or obliquely vertical direction of the guide portion of the interior during the opening of the extended by the guide portion and the right-side bar support the guide portion And the left and right symmetrically, the locking portion is provided in a vertically or diagonally vertical direction, and a space rotatable about the axis between the horizontal direction and the diagonally horizontal direction is provided, and the laterally or diagonally laterally locking portion can be locked. Form the bar receiving space part where the stop receiving part is formed,
The lower ends of the left and right guide parts extend below the lock receiving part, and the fall prevention bar can be retracted below the lock receiving part.
Fall prevention tool characterized by. A pair of left side bar support and right side bar support, which can be mounted so as to face each other upward, at the end of the horizontal plate on which the article is placed,
A pair of left side bar support and a right side bar support provided with a fall prevention bar that can be detachably installed horizontally.
The fall-prevention bar is provided with axially outward projecting portions from the left and right end portions and symmetrically formed projecting portions, and each projecting portion has a neck portion extending axially outward of the fall-preventing bar and a neck portion. And a locking portion extending in the radial direction or the diametrical direction from the tip of
Left bar support and the right bar support has a guide portion which is open in the left-right direction center direction of the shelf while being extended in the up and down direction or obliquely vertical direction, vertical left and right locking portions of the fall preventing bars It is formed so that it can be inserted into and removed from the guide portions of the left bar support and the right bar support through the openings in the state of being oriented vertically or diagonally vertically, and when the left and right locking parts are oriented horizontally or diagonally horizontally. It is formed so that it cannot be inserted or removed through the opening,
Left and right inside the opening in the middle of the guide part that extends vertically or diagonally in the vertical direction of the left bar support , and inside the opening in the middle of the guide that extends vertically or diagonally in the vertical direction of the right bar support. Symmetrically, there is a space that can rotate around the axis between the vertical or diagonal vertical direction and the horizontal or diagonal horizontal direction, and the lock receiving part that can lock the horizontal or diagonal horizontal direction To form the bar receiving space part of
The lower ends of the left and right guide parts extend below the lock receiving part, and the fall prevention bar can be retracted below the lock receiving part.
Fall prevention tool characterized by. The guide part should open upwards and toward the center of the shelf in the left-right direction,
The fall prevention tool according to claim 1 or 2.

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