JPH119371A - Rack having function for preventing stored article from falling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rack having function for preventing stored article from falling with which it is not necessary to open/close a door and further a stored article fall preventing function can be effectively utilized even in the case of vibration occurrence completely without trouble in ordinarily putting in/taking out stored articles. SOLUTION: A vibration sensor 3 is provided on a top plate 1B of a rack 1, a fall prevention fence 4 is attached on the front face of the rack 1 so as to be vertically slid, a fence hold pin 7 to be engaged with the fall prevention fence 4 and a pin housing part 6 for freely movably housing this pin are provided at the upper part of the rack 1, and an output part 24 of the vibration sensor 3 is engaged with the fence hold pin 7. When vibrations are sensed, the fence hold pin 7 is moved by the output of the output part 24, the fall prevention fence 4 and the fence hold pin 7 are disengaged, and the fall prevention fence 4 is dropped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration detecting device which operates when a vibration is generated, automatically lowers a fence provided on the front of a shelf, and prevents articles stored in the shelf from falling outside. The present invention relates to a shelf having a function of preventing stored items from falling.

[0002]

2. Description of the Related Art As a conventional shelf having a function of preventing falling of stored items, for example, a bar, a spring, a magnet, and various other types of automatic or manual opening stopper members are attached to the door of a shelf with a door. The door opening member is always opened when the door is opened, and when an earthquake or the like occurs, the door opening member is kept closed by the operation of the door opening member to prevent the storage items from dropping. is there.

[0003] In the case of a shelf without a door, there is known a structure in which a drop-preventing rod is laterally mounted between the steps constituting the storage section of the shelf.

[0004]

However, in the case of conventional shelves having a function of preventing falling of stored items with a door, every time the door is opened, the door itself is opened by hand each time, and then the door is opened. There are many things that are inconvenient to use, such as opening the door or opening the door with a considerable force to automatically open the stopper member.

[0005] In the case of a shelf without a door, it is troublesome to attach and detach a rod for preventing a fall. Therefore, the present invention provides a shelf having a stored item fall prevention function that does not need to open and close the door, has no problem in taking out and out of stored items daily, and can exhibit the stored item fall prevention function only when vibration occurs. The purpose is to do.

[0006]

According to a first aspect of the present invention, there is provided a shelf having a function for preventing falling of stored items, comprising a vibration sensing device on a top plate of the shelf, and a shelf. A fall prevention fence is slidably mounted on the front surface, and a fence holding pin engaging with the fall prevention fence and a pin storage part for movably storing the fence holding pin are provided at the upper part of the shelf. Engaged with the fence holding pin,
When the vibration is detected, the fence holding pin is moved by the output of the output unit to disengage the fall prevention fence from the fence holding pin.

According to a second aspect of the present invention, there is provided the shelf having the function of preventing a stored item from falling according to the first aspect,
(A) The fall prevention fence is formed by a vertical member having a length slightly shorter than the vertical frame along the front surfaces of the vertical frames on both sides constituting the shelf storage portion, and a horizontal member at the bottom of the horizontal frame constituting the shelf storage portion. Having a horizontal member corresponding to the horizontal frame of each step except the frame, and having an engagement recess with the fence holding pin in the uppermost horizontal member,
(B) the pin storage portion has a tunnel hole including a horizontal hole extending horizontally from the front surface of the shelf in the depth direction and a vertical hole extending rearward and upward from the horizontal hole and opening to the shelf top plate;
(C) The fence holding pin is an L-shape that is turned sideways, and its horizontal portion has a plurality of wheels in the longitudinal direction and is stored in a horizontal hole of the pin storage portion. And the end portion thereof protrudes upward from the opening of the shelf top plate to form a pressure receiving surface for the output of the vibration sensing device,
(D) The vibration sensing device has an output unit that horizontally moves by the urging force of the urging member when the vibration is sensed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 are three views showing an example of a shelf having a function of preventing falling of stored items according to the present invention. FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a plan view. First, an outline of the overall configuration will be described. In the figure, reference numeral 1 denotes a shelf main body.
The shelf body 1 of this example is a box type, and has a left and right vertical frame 1A, an uppermost horizontal frame (top plate) 1B, and a lowermost horizontal frame (bottom plate) 1C.
The space enclosed by the backboard 1D and the backboard 1D is partitioned by a plurality of horizontal frames 1E to form a plurality of shelf storage sections 2.

On a top plate 1B of the shelf main body 1 (hereinafter simply referred to as a shelf 1), a vibration sensing device 3, which will be described later in detail, is attached to the front surface at the center position of the shelf width. A fall prevention fence 4 is mounted on the front of the shelf 1 so as to be guided up and down by a guide 5 and can slide up and down. Usually, a pin storage section 6 provided on a top plate 1B of the shelf 1 is provided.
And is held in a state of being lifted upward by a fence holding pin 7 built in.

Next, the configuration of each part will be described in detail. The fall prevention fence 4 includes a vertical member 4A along the front surface of the vertical frames 1A, 1A on both sides of the storage unit 2 of the shelf 1,
It is formed by combining a horizontal member 4B corresponding to the top plate 1B of the shelf 1 and a horizontal member 4E corresponding to the horizontal frame 1E that divides each step. The length of the vertical member 4A is shorter than the vertical frame 1A of the shelf 1 by about half the height of the shelf storage section 2,
Therefore, there is no horizontal member corresponding to the bottom plate 1C which is the lowermost horizontal frame of the shelf 1. The uppermost horizontal member 4B of the fall prevention fence 4 is provided with a pin engaging recess 8 in which the fence holding pin 7 engages at the center of the width thereof, and is open to the shelf 1 side. (See FIG. 4).

A guide 5 for guiding the slide of the fall prevention fence 4 up and down is a metal fitting having an L-shaped cross section. The guide 5 is fixed to and attached to the front ends of the outer surfaces of the vertical frames 1A and 1A of the shelf 1. It may be fixed and attached to the vertical member 4A of the fence 4. The guide 5 is not limited to this, and may be, for example, a combination of a projection and a groove. In short, the guide 5 may be any as long as the fall prevention fence 4 can be attached to the front surface of the shelf 1 so as to be vertically slidable.

As shown in FIG. 4, the pin storage section 6 provided on the top plate 1B of the shelf 1 is located at a position directly below the vibration sensing device 3 installed on the top plate 1B. And a vertical hole 10 extending horizontally from the rear end of the horizontal hole 9 and extending upward from the rear end of the horizontal hole 9 and opening on the upper surface of the top plate 1B. The opening 6a of the lateral hole 9 faces the pin engaging recess 7 of the fall prevention fence 4 in the suspended state. On the other hand, the opening 6b of the vertical hole 10
Is longer than the thickness of the fall prevention fence 4 from the rear end of the vibration sensing device 3 on the top plate 1B toward the rear of the shelf 1.

As shown in FIGS. 4 to 6, the fence holding pin 7 is in the shape of a horizontal L-shaped member formed by bending or joining a rigid plate such as a metal plate or a hard plastic plate. A plurality of wheels 7C are provided on the elongated horizontal portion 7A.
However, they are rotatably mounted side by side on the upper and lower surfaces at intervals in the longitudinal direction. This L-shaped fence holding pin 7
Similarly, it is horizontally movably housed in a pin housing 6 formed of an L-shaped tunnel hole. The tip of the horizontal portion 7A usually projects from the opening 6a and engages with the pin engaging recess 8 of the fall prevention fence 4. On the other hand, the upper end side of the vertical portion 7B rising upward from the rear end of the horizontal portion is provided with an opening 6b of the pin storage portion 6.
From above, and the front surface 7D of the protruding portion serves as a pressure receiving surface for the output of the vibration sensing device 3.

As shown in FIG. 7 and FIG. 8, the vibration sensing device 3 has a long plate spring 22 inserted and movably inserted in a rectangular parallelepiped box 21 which is long in the horizontal direction. Have been. The leaf spring 22 has a rear end protruding outside through a hole 23 formed in an end wall of the box 21, and a handle 24 as an output unit is attached to the protruding end.
On the other hand, a triangular prism-shaped arrowhead 25 is attached to the tip of the leaf spring 22. A support plate 27 for movably supporting the leaf spring 22 is provided at a substantially central portion in the longitudinal direction in the box 21, and the leaf spring 22 is provided in the box 21 on the rear end side of the support plate 27. Is provided on the rear end side. One end of the tension coil spring 28 is fixed to the leaf spring 22, and the other end is fixed to an end wall of the box 21.

A regulating member 29 is provided in the box 21 on the tip side of the support plate 27. The regulating member 29 presses the handle 24 against the urging force of the extension coil spring 28 to thereby It has an inclined surface 30 which comes into contact with the arrowhead 25 when the 22 is moved to the tip side and pushes down the arrowhead 25. Further, when the arrowhead 25 returned upward due to the elasticity of the leaf spring 22 after passing through the inclined surface 30 tries to return to the rear end side by the urging force of the extension coil spring 28, the gill 25a of the arrowhead 25 is hooked. It has a hooked portion 31 for restricting further movement of the leaf spring 22 to the rear end side. Hooked part 3
A weight 32 is disposed above the arrowhead 25 that is hung on 1 so as to drop when vibrating.

The weight 32 has a columnar shape slightly shorter than the width of the box 21, and a shaft 33 is formed concentrically at both ends thereof. The shaft portion 33 is movably supported by a lateral groove 34 formed on both side walls in the width direction of the box 21 along the longitudinal direction of the leaf spring 22. As a result, the weight 32 is disposed above the buttocks 25 hung on the hooked portion 31. In a state where the shaft portion 33 is supported by the lateral groove 34,
The shaft 33 protrudes from the side wall of the box 21. A vertical structure 35 extending downward (vertically) is formed continuously at an end of the horizontal groove 34, and the vertical groove 35 guides the shaft 33 downward when the weight 32 falls. I have.

Next, the operation of the shelves having the function of preventing falling of stored articles according to the present invention configured as described above will be described. Normally, the weight 32 of the vibration sensing device 3 has a lateral groove 34 as shown in FIG.
The leaf spring 22 is pushed into the box 21 and the extension coil spring 28 is extended. The handle 24 is close to the end wall of the box 21. Fence holding pin 7
Is in the forward position shown in FIG. 4, and the pressure receiving surface 7D thereof is close to or in contact with the rear end surface of the handle 24 of the vibration sensing device 3. At this time, the wheel P on the top surface of the tip of the fence holding pin 7
Engages with the pin engaging recess 8 of the fall prevention fence 4 and receives the weight of the fall prevention fence 4. This load is the second wheel Q on the lower side
To the wheel R at the rearmost point on the upper surface with the
Has been accepted. As a result, the fall prevention fence 4 is held in a state of being lifted to the upper limit position, and the respective lateral members 4E
Is overlapped with the horizontal frame 1E of the shelf 1, so that articles can be taken in and out of the shelf storage section 2 freely.

In this state, when an earthquake occurs and horizontal vibration occurs, first, the weight 32 in the vibration sensing device 3
Then, the shaft 33 moves from the horizontal groove 34 to the vertical groove 35 side. Thus, the shaft 33 is guided by the vertical groove 35, and the weight 32 falls to the bottom of the box 21. Then, as shown in FIG. 9, the weight 32 hits the arrowhead 25, and the locking of the gill 25 a of the arrowhead 25 on the hooked portion 31 is released. As a result, the leaf spring 22 moves to the rear end side by the urging force of the extension coil spring 28, and the handle 24 projects vigorously rearward.

At this time, since the handle 24 strongly presses the pressure receiving surface 7D of the fence holding pin 7 rearward, the fence holding pin 7 horizontally moves rearward in the pin storage portion 6 as shown in FIG. The engagement with the fall prevention fence 4 is released. Therefore, the fall prevention fence 4 falls by its own weight, and the lower end of the vertical member 4A hits the floor surface and stops. Thus, each of the horizontal members 4B and 4E of the fall prevention fence 4 which usually overlaps with the horizontal frame 1E of the shelf 1 moves to an intermediate position between the front openings of the respective storage portions 2 of the shelf 1 as shown in FIG. As a result, the stored items (for example, books) in the shelf 1 are prevented from jumping out and falling.

When resetting, the shaft 33 protruding from the side wall of the box 21 of the vibration sensing device 3 is operated to return the shaft 33 to the lateral groove 34 and set the weight 32 to the original position. Thereafter, the handle 24 is pressed toward the distal end of the leaf spring 22 against the urging force of the extension coil spring 28. At this time,
While the arrowhead 25 comes down against the inclined surface 30 and is lowered,
After passing through the inclined surface 30, the gills 25 a of the arrowheads 25 that have returned upward due to the elasticity of the leaf springs 22 are hooked on the hooked portions 31, and the reset of the vibration sensing device 3 is completed. Subsequently, after the fall prevention fence 4 is pulled up to the state shown in FIG. 1, the fence holding pin 7 is pushed by hand to move forward, and the tip of the pin is engaged with the pin engagement recess 8 of the fall prevention fence 4. In this case, the fall prevention fence 4 is held in a normal suspended state.

In the above embodiment, the fall prevention fence 4
Is described on the box-shaped shelf 1. However, the shelf 1 is not limited to the box-type, and can be applied to other types such as a type built near a wall. In that case, the top shelf may be used as the top plate.

In the vibration sensing device 3, the leaf spring 2
Although the tension coil spring is provided as the biasing member 28 for biasing the rear end 2 toward the rear end side, a compression coil spring may be used. In such a case, however, one end (front end) of the compression coil spring is locked to the support plate 27 and the other end (rear end) is locked to the leaf spring 22.

In FIG. 5, a plurality of wheels 7C are provided on the upper and lower surfaces of the horizontal portion 7A as the fence holding pins 7, but the wheels 7C are provided only on the lower surface side of the horizontal portion 7A. However, regarding the wheels on the upper surface side, the wheels other than the foremost wheel P (which contacts the fall prevention fence 4) can be omitted. In this case, since the pressure receiving surface 7D of the fence holding pin 7 is in contact with the handle 24 of the vibration sensing device 3, when the wheel P receives the weight of the fall prevention fence 4, the fence holding pin 7 functions as a unicycle having the wheel Q. And can move smoothly.

[0024]

As described above, according to the present invention, when a vibration such as an earthquake occurs, the vibration sensing device operates, and the fence holding pin is usually lifted with the horizontal member overlapping the horizontal frame of the shelf. The fall prevention fence engaged with the fence is automatically disengaged from the fence holding pin and falls naturally, and the horizontal member of the fall prevention fence is located at an intermediate position between the horizontal frames of the respective steps of the shelf. For,
The effect that the fall of the storage thing in a shelf can be prevented automatically is acquired.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of what is shown in FIG.

FIG. 3 is a plan view of what is shown in FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

FIG. 5 is a side view of a fence holding pin which is a component of the present invention.

FIG. 6 is a plan view of what is shown in FIG.

FIG. 7 is a cross-sectional view of a vibration sensing device that is a component of the present invention.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a sectional view for explaining the operation of the vibration sensing device;
(A) is a state immediately after the operation is started, and (b) is a state after the operation is completed.

FIG. 10 is a sectional view corresponding to FIG. 4 for explaining an operation at the time of occurrence of vibration.

FIG. 11 shows a state in which stored items are prevented from falling due to generation of vibration,
(A) is a front view, (b) is a side view.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shelf 1A vertical frame 1B top plate 1E horizontal frame 2 shelf storage section 3 vibration sensing device 4 fall prevention fence 4A vertical member 4B horizontal member 4E horizontal member 6 pin storage section 7 fence holding pin 7A horizontal section 7B vertical section 7C wheel 7D receiving pressure Surface 8 Pin engaging recess 9 Horizontal hole 10 Vertical hole 24 Output part (of vibration sensing device)

Claims (2)

[Claims] 1. A vibration sensing device is provided on a top plate of a shelf, and a fall prevention fence is slidably mounted on a front surface of the shelf so as to be vertically slidable. A pin storage portion for storing the vibration detection device, the output portion of the vibration sensing device is engaged with the fence holding pin,
A shelf having a fall prevention function for stored items, wherein when the vibration is detected, the fence holding pin is moved by the output of the output unit to disengage the fall prevention fence from the fence holding pin. 2. The shelf having a stored item fall prevention function according to claim 1, wherein: (a) the fall prevention fence is longer than the vertical frame along the front surface of the vertical frames on both sides constituting the shelf storage portion. Along with a slightly shorter vertical member and a horizontal member corresponding to each horizontal frame except for the lowermost horizontal frame with respect to the horizontal frame forming the shelf storage portion, the uppermost horizontal member is provided with the fence holding pin. (B) The pin storage portion has a tunnel hole formed by a horizontal hole extending horizontally in the depth direction from the front surface of the shelf and a vertical hole extending rearward and upward from the horizontal hole and opening to the shelf top plate. (C) The fence holding pin is L-shaped and turned sideways, and its horizontal portion has a plurality of wheels in the longitudinal direction and is stored in a lateral hole of the pin storage portion, and its vertical portion is the pin storage portion. And the end protrudes upward from the opening of the shelf top plate (D) the vibration sensing device has an output portion that horizontally moves by the urging force of the urging member when the vibration is sensed; Shelf with fall prevention function.