JP6893680B2 - Article fall prevention device - Google Patents

Description

The present invention relates to an article fall prevention device arranged at a rack entrance / exit.

As disclosed in Patent Document 1, the rack article fall prevention device is an article fall prevention device arranged at the entrance / exit of a rack in which a plurality of shelves are attached between columns, and is a left and right vertical swivel and its own. A fall prevention frame that is formed in a frame shape with upper and lower horizontal rods that connect the above and below to open and close the entrance and exit of the rack, and a pair of upper and lower pivot tools that pivotally support the base side of this fall prevention frame to the support of the rack. , It has a connecting tool that connects the free end side of the fall prevention frame to the shelf material of the rack, and the connecting tool has a vertical hook member attached to the front surface of the shelf material of the rack and a vertical fall prevention frame. It is supported by a rod and has a lock member that can be engaged and disengaged with the vertical hooking member by moving up and down or rotating.

The lock member has a straight lower end and an inverted J-shaped hook at the upper end, and the hook is inserted into and removed from directly above the hook hole of the upper hook member.

Japanese Unexamined Patent Publication No. 2016-2257

In the prior art, the hook on the upper end of the lock member must be aligned not only vertically but also rotated to be inserted directly above the hook hole in order to be inserted into the hook hole of the upper hook member. This alignment is difficult and troublesome.
In addition, since the hook must move upward to above the hook hole of the upper hook, the vertical position of the upper hook with respect to the hook must be accurate, and the spacing between the multiple shelves must be correct. If they are different, it is necessary to prepare a hook that corresponds to the interval, which makes it less versatile.

Further, since the shape of the lower end and the upper end of the lock member are different, it is troublesome to engage and manufacture the lock member.
An object of the present invention is to provide an article fall prevention device capable of solving such problems of the prior art.
An object of the present invention is to provide an article fall prevention device capable of engaging a vertical hooking portion with a hooking groove of a vertical hooking member simply by rotating a lock member and facilitating a closing lock operation of a fall prevention frame. To do.

Specific means for solving the problem in the present invention are as follows.
First, a fall prevention frame 7 for opening and closing the entrance / exit Ra of the rack R to which a plurality of shelves 3 are attached between the support columns 2 and a base side of the fall prevention frame 7 are pivotally supported by the support 2 of the rack R. The pivot support 8 and the connecting tool 9 for connecting the free end side of the fall prevention frame 7 to the shelf material 3 of the rack R are provided.
The connecting tool 9 includes a hooking member 20 attached to the shelf material 3 of the rack R, and a lock member 21 supported by the free end of the fall prevention frame 7 and engaged with the hooking member 20 so as to be engaged and detached freely. It is an article fall prevention device that you have
The locking member 20 is provided with a pair of upper and lower hooking grooves K and is formed with a hooking groove K that is open in the horizontal direction. The locking member 21 has a vertical axis 21A rotatably supported by a fall prevention frame 7 and a vertical axis 21A thereof. the vertical axis provided 21A and the vertical axis 21A has a pair of upper and lower engaging portions G which engages freely Kakeda' and below the lock grooves K by rotating,
Characterized that you have a handle 24 for rotating operation is provided on the longitudinal axis 21A.

Second, between the free end of the handle 24 and the fall prevention frame 7 of the longitudinal axis 21A, biases rotating the vertical axis 21A in a direction to engage the upper and lower fitting part G above and below the latch member 20 It is characterized in that the urging member 25 is provided.
Third, the longitudinal axis 21A is disposed on the outer surface of the frame extending direction of the free ends of the fall prevention frame 7, in a state where the upper and lower engaging portion G is hooked to the opposite and upper and lower latching member 20 to the shelf member 3, The article fall prevention device according to claim 1 or 2, wherein the handle 24 extends from a frame extension position of the free end of the fall prevention frame 7 to the front side of the free end.

Fourth, the outer peripheral surface of the vertical axis 21A is formed in a rectangular shape, and a plurality of support members 27 for supporting the vertical axis 21A so as to be rotatable at a required angle are provided on the free end side of the fall prevention frame 7.
The lower portion of the engaging portion G of the lower, characterized in that it is placed on the upper surface of the support member 27D below.
Fifth, at least one of the upper and lower engaging portions G is detachably attached to the vertical axis 21A.

According to the present invention, the upper and lower engaging portions can be engaged with the engaging grooves of the upper and lower engaging members simply by rotating the lock member, and the closing lock operation of the fall prevention frame can be easily performed.
That is, in the invention according to claim 1, a pair of upper and lower hooking members 20 are provided and a hooking groove K that is open in the horizontal direction is formed, and the lock member 21 is rotatably supported by the fall prevention frame 7. The upper and lower engaging portions G are formed on the vertical axis 21A, and by rotating the vertical axis 21A, the upper and lower engaging portions G are engaged with the upper and lower hook grooves K so as to be freely engaged and disengaged, so that only the lock member 21 is rotated. The upper and lower engaging portions G can be simultaneously engaged with the hook groove K of the upper and lower hooking members 20, and the closing lock and unlock operations of the fall prevention frame 7 can be easily performed.

In the invention according to claim 2, a handle 24 is provided on the vertical axis 21A, and an urging member 25 is provided between the handle 24 and the free end of the fall prevention frame 7, so that the engaging portion G is hooked. The operation of engaging and disengaging the stop member 20 can be easily performed.
In the invention according to claim 3, since the handle 24 extends from the frame extension position of the free end of the fall prevention frame 7 to the front side of the free end in a state where the engaging portion G is engaged, the article is a rack R. The handle 24 does not hit even if it protrudes from the doorway Ra, and it is possible to prevent the handle 24 from being unintentionally rotated.

In the invention according to claim 4, since the outer peripheral surface of the vertical axis 21A is formed in a rectangular shape and is supported by the support member 27 so as to be rotatable at a required angle, excessive rotation of the vertical axis 21A can be prevented and the lower support member can be prevented. Since the lower part of the lower hooking portion G is placed by 27D, the vertical position of the vertical axis 21A can be properly maintained.
In the invention according to claim 5, since at least one of the upper and lower engaging portions G is detachably attached to the vertical axis 21A, the distance between the upper and lower engaging members 20U and 20D is adjusted, and the connecting tool 9 is incorporated into the fall prevention frame 7. Etc. can be easily done.

It is an overall front view of the rack entrance closed state which shows the embodiment of this invention. It is the same overall plan view. It is a front view of the main part of the article fall prevention device. It is a side explanatory view of the article fall prevention device. It is a top view of the main part. FIG. 3 is a cross-sectional view taken along line XX of FIG. It is a perspective view of the handle of the article fall prevention device. It is a plane explanatory view of a support member and a guide member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIGS. 1 to 7, a pair of article fall prevention devices 1 are attached to the left and right columns 2 of the rack R so as to face each other.
The rack R is configured by erection of a plurality of columns 2 and attaching the shelf materials 3 to a plurality of stages such as the lower stage and the upper stage. The entrance / exit Ra is used to move in and out, and the article fall prevention device 1 is rotatably arranged at the entrance / exit Ra to prevent articles from falling from the entrance / exit Ra in the closed state during an earthquake.

When the rack R forms a wide entrance / exit Ra between the two columns 2, the article fall prevention device 1 is symmetrically attached to each of the left and right columns 2, and the left and right fall prevention frames 7 are opened and closed in a double-door shape. In FIG. 1, two symmetrical objects are illustrated as an article fall prevention device 1A and an article fall prevention device 1B.
When the rack R has three or more columns 2, two article fall prevention devices 1A are mounted back-to-back symmetrically on the intermediate columns 2.

The article fall prevention devices 1 (1A, 1B) are roughly classified into a fall prevention frame 7, a pair of upper and lower pivot tools 8 on the base end side of the fall prevention frame 7, and a free end side connection of the fall prevention frame 7. It has a tool 9.
The fall prevention frame 7 is formed in a square frame shape by a pair of left and right vertical rods 5 made of a square pipe material (square pipe) and a pair of upper and lower horizontal rods 6 connecting the upper and lower ends of the left and right vertical rods 5. An auxiliary vertical rod 16 for connecting the upper and lower horizontal rods 6 is provided at an intermediate position between the rods 5. Both the vertical rod 5 and the horizontal rod 6 are square pipes and are welded together. The upper horizontal rod 6 is located above the upper shelf material 3.

In FIGS. 1 and 2, the pair of upper and lower pivot tools 8 pivotally support the base side (the pivot side) of the fall prevention frame 7 to the support column 2 of the rack R. Each of the upper and lower pivots 8 has a pedestal 12 fixed to the support column 2 so as to be vertically repositionable, and a hinge 13 for connecting the pedestal 12 and the fall prevention frame 7.
In FIGS. 1 to 6, the connecting tool 9 is supported by a vertical hook member 20 (20U, 20D) attached to the front surface of the upper and lower shelf members 3 of the rack R and a vertical rod 5 of the fall prevention frame 7. It has a lock member 21.

The upper and lower hooking members 20 (20U, 20D) have the same shape, and the hooking plate 31 is welded to the mounting plate 32 attached to the front surface of the shelf material 3 in a T-shape in a side view. The hook plate 31 is a horizontal plate material, has an arrowhead shape in a plan view, has a hook groove K open in the horizontal direction between the hook plate 32 and the mounting plate 32 on the rear side, and has an inclined contact on the front side. A contact portion 20a and a receiving portion 20b are formed.
The back portion of the hook groove K is located immediately after the lock member 21, and the contact portion 20a is formed on the front side of the hook groove K and its left-right width is wider than the length of the hook groove K.

The receiving portion 20b is a surface that receives the vertical rod 5 of the fall prevention frame 7 when closed, and the contact portion 20a is inclined from a position protruding from the receiving portion 20b toward the open end side of the hook groove K. That is, the contact portion 20a is inclined from the front front to the rear and away from the receiving portion 20b with reference to the inner portion of the hook groove K.
The lock member 21 is formed of a vertical axis 21A formed of a vertically long straight square bar, a square pipe, or the like along a vertical rod 5, and an upper and lower engaging portion G provided on the vertical axis 21A, and has a vertical axis. A handle 24 is attached to the lower part of 21A.

The vertical axis 21A is arranged on the outer surface of the vertical rod 5 at the free end of the fall prevention frame 7 in the frame extension direction, and is rotatably supported by a plurality of support members 27 and guide members 28 provided on the vertical rod 5. ..
The upper and lower engaging portions G are formed by bending a round bar member in a U shape and connecting both ends thereof to the vertical axis 21A, and the lower engaging portion G has both ends of the U-shaped bar member welded to the vertical axis 21A by welding or the like. As shown in FIGS. 4 and 6, the upper hooking portion G has a mounting portion Ga in which the strips are bent in a U shape at both ends, and is detachable with respect to the vertical axis 21A and can be freely changed in the vertical position. It is attached to.

The upper and lower engaging portions G are radially separated from the rotation axis of the vertical axis 21A and parallel to the vertical axis 21A, and are formed long in the vertical direction, and the upper and lower engaging members 20U and 20D are formed. It is possible to engage with the hook groove K which is in contact with the inclined contact portion 20a formed in the above direction and is open in the horizontal direction. The engaging portion G can be engaged with the engaging member 20 in a long range in the vertical direction.
The upper and lower engaging portions G can be moved by rotating the lock member 21 around the vertical axis, and from a state where the lock member 21 is located on the back side of the vertical axis 21A, abuts on the abutting portion 20a and is lateral to the vertical axis 21A. Moves to, enters the hook groove K, moves to the back (the back side of the vertical axis 21A), and fixes the fall prevention frame 7 in the closed position. On the contrary, when the vertical axis 21A is artificially rotated and the upper and lower engaging portions G are projected outward from the back of the hook groove K through the tip of the hook groove K, the engagement is released and the fall prevention frame is released. Make 7 openable.

The handle 24 is made by bending a round bar member in a U shape and fixing both ends thereof to the lower part of the vertical axis 21A by welding or the like, and the handle 24 projects from the vertical axis 21A to the front side of the free end of the fall prevention frame 7.
That is, the vertical axis 21A is arranged on the outer surface of the free end of the fall prevention frame 7 in the frame extension direction, and the engaging portion G projects toward the shelf material 3 immediately after the vertical axis 21A, and the hooking groove K of the hooking member 20. The handle 24 extends from the frame extension position of the free end of the fall prevention frame 7 to the front side of the free end in a state of being engaged in the back of the handle 24, and in this state, the handle 24 extends from the vertical axis 21A to the fall prevention frame 7. It is tilted so as to move away from the front side.

The handle 24 separated to the front side of the fall prevention frame 7 can be rotated until it comes into contact with the fall prevention frame 7, and the rotation operation is an operation of detaching the upper and lower engaging portions G from the hook groove K. The grip portion of the handle 24 is located at a position separated from the vertical rod 5 at the free end of the fall prevention frame 7, and is configured so that the gripper does not come into contact with the vertical rod 5.
An urging member 25 is provided between the handle 24 and the free end of the fall prevention frame 7 to rotate and urge the vertical axis 21A in the direction in which the engaging portion G is engaged with the engaging member 20. The urging member 25 is formed of a coil spring and is fitted on the vertical axis 21A, one end of which is locked to the handle 24 and the other end of which is locked to the lower guide member 28.

A plurality of upper and lower guide members 28 are provided on the outer surface of the free end of the fall prevention frame 7 (the surface of the vertical rod 5 facing the vertical axis 21A). As shown in FIGS. 4 and 8, the guide member 28 has a substantially C-shape in a plan view, a part of the central circular hole 28a is opened to form an opening 28b, and the circular hole 28a has a cross-sectional angle shape. The vertical axis 21A is inserted and rotation is allowed, and the opening 28b can pass through one side of the vertical axis 21A but is narrower than the diagonal length, and when the vertical axis 21A is rotated, the opening 28b cannot be separated from the guide member 28. It has become.

Similar to the vertical guide member 28, a pair of upper and lower support members 27 are provided on the outer surface of the free end of the fall prevention frame 7. The vertical support member 27 supports the upper end and the lower end of the vertical axis 21A so as to be rotatable at a constant angle.
As shown in FIGS. 4 to 6 and 8, holes 27a having a substantially circular shape in a plan view are formed in the upper and lower support members 27, and two triangular protrusions 30 are formed in the holes 27a at positions deviated by 180 degrees. Has been done. Each of the triangular protrusions 30 has an obtuse angle with respect to the regulation surface 30a which is orthogonal to the protrusion direction of the engaging portion G of the vertical axis 21A and parallel to the width direction (horizontal direction) of the fall prevention frame 7. It has a flank surface 30b that intersects at.

The regulation surface 30a of the two triangular protrusions has a dimension in which the vertical axis 21A having a cross-sectional angular shape is included and is substantially close to the front and back two surfaces of the vertical axis 21A, and the vertical axis 21A has two front and back surfaces. By abutting with the two regulating surfaces 30a, the vertical axis 21A is restricted from excessive rotation in the direction in which the engaging portion G is engaged.
The vertical axis 21A can escape and rotate in the direction opposite to the contact from the position where it abuts on the regulation surface 30a, and restricts the rotation of the vertical axis 21A in the direction of disengaging the engaging portion G by the rotation operation of the handle 24. .. The movement of the engaging portion G in the direction of disengagement may be restricted by the flank 30b of the support member 27, or by the handle 24 coming into contact with the vertical rod 5 at the free end of the fall prevention frame 7. May be good.

The lower portion of the lower hooking portion G is supported by the lower support member 27D, the lower support member 27D supports the lower end of the vertical axis 21A, and a retaining pin 34 is provided at the lower end of the vertical axis 21A. , The vertical axis 21A is restricted from moving upward and exiting.
The operation method of the article fall prevention device 1 will be described below.
When the article fall prevention device 1 closes the fall prevention frame 7 from the state where the entrance / exit Ra is opened, the upper and lower engaging portions G provided on the vertical axis 21A become the inclined contact portions 20a of the upper and lower hook members 20U and 20D. It abuts and rotates against the urging member 25, and the vertical axis 21A rotates in a direction in which the front and rear surfaces approach the flank surface 30b.

When the fall prevention frame 7 is further swung in the closing direction, the engaging portion G gets over the tip of the contact portion 20a of the hooking member 20 and enters the hooking groove K, and the hooking groove K located immediately after the vertical axis 21A. Engage in the back of. At this time, the engaging portion G is located immediately after the vertical axis 21A and is orthogonal to the width direction of the fall prevention frame 7, and the front and rear surfaces of the vertical axis 21A face the regulation surface 30a of the support member 27. When the hooking portion G engages with the hooking member 20, the fall prevention frame 7 is in a posture of closing the entrance / exit Ra and the posture is maintained.

When the fall prevention frame 7 closes the entrance / exit Ra, the handle 24 projects from the vertical axis 21A to the front side of the free end of the fall prevention frame 7, and the handle 24 is pushed against the urging member 25 to prevent the fall. When the rotation operation is performed in the direction approaching 7, the engaging portion G of the vertical axis 21A moves from the back of the engaging groove K of the engaging member 20 toward the tip end side and disengages. After the engaging portion G moves from the back of the hooking groove K to the tip side, the free end of the fall prevention frame 7 is pulled forward, so that the engaging portion G is separated from the hooking member 20 and the fall prevention frame 7 is removed. It can be opened.

In the assembly of the article fall prevention device 1, the upper end of the vertical axis 21A is inserted into the hole 27a of the upper support member 27U with the lower engaging portion G fixed to the vertical axis 21A and the upper engaging portion G removed. From the middle of the process, the middle portion of the vertical axis 21A is inserted into the circular hole 28a through the opening 28b of the vertical guide member 28.
Since the vertical axis 21A follows the free end of the fall prevention frame 7 when inserted through the vertical guide member 28, the lower end is inserted into the hole 27a of the lower support member 27 from above, and the lower portion of the lower engagement portion G is placed on the upper surface of the lower support member 27D. Abut and support. A retaining pin 34 is inserted below the lower support member 27 at the lower end of the vertical axis 21A to restrict the upward movement of the vertical axis 21A.

After that, the upper hook G is attached to the vertical axis 21A, one end of the coil spring of the biasing member 25 previously fitted to the vertical axis 21A is locked to the handle 24, and the other end is the lower guide member. Lock to 28.
In the present invention, it is best to configure the shape of each member in the embodiment and the positional relationship between the front and back, the left and right, and the top and bottom as shown in FIGS. 1 to 8. However, the present invention is not limited to the above embodiment, and the members and configurations can be variously modified or combinations can be changed.

For example, one end of the coil spring of the urging member 25 may be locked to the vertical axis 21A, and the other end may be locked to the vertical rod 5 on the free end side of the fall prevention frame 7.
The lock member 21 may be bent at two upper and lower parts of the vertical axis 21A into a crank shape to form an upper and lower engaging portion G.
The handle 24 is formed by welding a U-shaped bar to the vertical axis 21A, but the handle is made of a single bar having a fitting mounting portion formed at the end thereof, and is moved up and down on the vertical axis 21A. It may be fitted and mounted so that the position can be adjusted freely.

1 Article fall prevention device (1A, 1B)
2 Struts 3 Shelf material 5 Vertical rod 6 Horizontal rod 7 Fall prevention frame 8 Pivot support 9 Connector 12 Base 13 Hinge 20 Hook member (20U, 20U)
20a Contact part 20b Receiving part 21 Lock member 21A Vertical axis 24 Handle 25 Biasing member 27 Support member (27D, 27U)
27a hole 28 guide member 28a circular hole 28b opening 30 triangular protrusion 30a regulation surface 30b escape surface 31 hook plate 34 retaining pin G hooking part Ga mounting part K hooking groove R rack Ra entrance / exit

Claims (5)

A fall prevention frame (7) that can open and close the entrance (Ra) of the rack (R) to which a plurality of shelves (3) are attached between the columns (2), and the base side of the fall prevention frame (7). A connecting tool (8) that pivotally supports the support (2) of the rack (R) and a connecting tool (9) that connects the free end side of the fall prevention frame (7) to the shelf material (3) of the rack (R). And have
The connecting tool (9) includes a hooking member (20) attached to the shelf material (3) of the rack (R) and a hooking member (20) supported by the free end of the fall prevention frame (7). An article fall prevention device having a lock member (21) that can be engaged and disengaged freely.
A pair of upper and lower hooking members (20) are provided and a hooking groove (K) opened in the horizontal direction is formed, and the lock member (21) is rotatably supported by a fall prevention frame (7). It has been vertical axis (21A), Kakeda' freely engaged to a pair of upper and lower engaging portions to the longitudinal axes of the upper and lower by provided (21A) and the vertical axis (21A) is pivoted lock grooves (K) Has (G) and
The longitudinal axis article drop preventing apparatus characterized that you have a handle (24) is provided for rotating operation in (21A). Between the free end of the handle (24) and anti-drop frame (7) of the longitudinal axis (21A), the vertical axis in such a direction as to engage the upper and lower engaging part (G) above and below the latching member (20) ( The article fall prevention device according to claim 1, wherein an urging member (25) for rotating and urging 21A) is provided. The vertical axis (21A) is arranged on the outer surface of the free end of the fall prevention frame (7) in the frame extension direction, and the upper and lower engaging portions (G) face the shelf material (3) and the upper and lower hooking members (20). The first or second aspect of the present invention, wherein the handle (24) extends from the frame extension position of the free end of the fall prevention frame (7) to the front side of the free end in a state of being engaged with the free end. Article fall prevention device. The outer peripheral surface of the vertical axis (21A) is formed in a rectangular shape, and a plurality of support members (27) that support the vertical axis (21A) so as to be rotatable by a required angle are provided on the free end side of the fall prevention frame (7). Provided,
The article drop preventing apparatus according to any one of claims 1 to 3, characterized in that it is placed on the upper surface of the support member of the lower (27D) is lower under the latch member (20). The article fall prevention device according to any one of claims 1 to 4, wherein at least one of the upper and lower engaging portions (G) is detachably attached to the vertical axis (21A).

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