JPH11196961A - Article drop preventing device for stock shelf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an article drop preventing device for a stock shelf, which can surely prevent articles from dropping off shelf boards when the shelf boards are vibrated, without disturbing the loading and unloading of the articles under normal conditions. SOLUTION: When a seismoscope 10 is operated, the locking of a turning movement link 10 is released, turning movement link 10 is rotated, the rotation of the turning movement link 10 is transmitted to a slide link 13 through an intermediate link 11, and the slide link 13 is slid forward. Then a front part of the slide link 13 is protruded forward from a front edge of a shelf board 7, the slide link 13 is moved backward at the time when a shelf fence 18 is moved to the protruded position by a turning movement means, and the shelf fence 19 is drawn back to the neighborhood of the front edge of the shelf board 7, whereby the articles can be prevented from dropping from the shelf board 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing an article placed on a shelf of an article shelf from falling off the shelf.

[0002]

2. Description of the Related Art Conventionally, as an article drop prevention device for an article shelf of this type, there is known an apparatus disclosed in Japanese Utility Model Laid-Open No. 8-299080.

In this device, a stopper member projecting upward or downward via an urging spring is provided at a tip end of a shelf plate. Usually, the stopper member is inserted into the shelf plate by a locking member. When the vibration is detected by the vibration sensor, the locking state between the locking member and the stopper member is released, and the stopper member is protruded upward or downward from the shelf plate, and the article on the shelf plate is removed. Falling is prevented.

[0004]

However, in such a method, when the article is placed so as to reach the front of the shelf, the stopper member is not hindered by the article and does not protrude, so that the article falls. Not only can we prevent it,
If the height of the stopper member is greater than the thickness of the shelf, it will protrude to the lower part of the shelf during storage, which will hinder the loading and unloading of articles during normal operation, and if it is less than the thickness of the shelf, it will be a tall article. There is a problem that it is not possible to effectively prevent such a fall.

[0005] In addition, when a stopper member is attached by providing an elongated hole in the left-right direction on the upper surface of the tip of the shelf, there is a possibility that the strength of the shelf is reduced.

The present invention has been made in view of such problems, and does not hinder the loading and unloading of articles in a normal state, and when vibrations occur on the shelf, the articles are removed from the shelf. An object of the present invention is to provide an article fall prevention device for an article shelf that can reliably prevent the article from falling.

[0007]

In order to achieve the above object, an apparatus for preventing an article from dropping on an article shelf according to the present invention comprises a shelf support member and a shelf attached to the shelf support member via a bracket. A sliding link provided at the front of the bracket so as to be slidable in the front-rear direction, a rotating link having one end pivotally attached to the rear of the bracket, and one end being located after the sliding link. At an end, an intermediate link having the other end pivotally attached to the other end of the rotating link, and a storage position substantially parallel to the sliding link at a front end of the sliding link;
A shelf fence rotatably provided between a projecting position at which a tip projects at least above or below the shelf, and the shelf fence when at least a part of the sliding link projects from a front end of the shelf. Rotating means for rotating the rotating link from the storage position to the projecting position, a locking device for locking the rotating link at a predetermined position, and locking the rotating link by the locking device by sensing vibration. With a seismic device to cancel,
By the rotation of the rotation link, at least the sliding member is moved forward to a position where the shelf fence can be rotated from the storage position to the protruding position, and then the shelf fence is held at the front end of the shelf board. It is designed to be moved backward until According to this feature, when the seismic device is operated, the locking of the rotating link is released, the rotating link rotates, and the rotation of the rotating link is transmitted to the sliding link via the intermediate link. Then, the sliding link is slid forward. And the front part of the sliding link projects forward from the shelf front end, and when the shelf fence is moved to the projecting position by the rotating means, the sliding link is moved backward, and the shelf fence is moved to near the front end of the shelf board. It is pulled back and the article is prevented from falling off the shelf.

In the article drop prevention device for an article shelf according to the present invention, it is preferable that at least the sliding link, the intermediate link, the rotating link and the locking device are attached to the inner surface of the bracket. By doing so, each link becomes difficult to be seen from the outside, the appearance is improved, and these links can be protected from external impact.

In the article drop prevention device for an article shelf according to the present invention, the rotation link is held by a locking pin provided on the bracket so as to be slightly inclined backward from the vicinity of the top dead center, and at a predetermined angle or more. Is preferably rotated forward by the vibration of. This simplifies the structure because a part of the link becomes a seismic device.

In the article drop prevention device for an article shelf according to the present invention, the rotating means has one end at the tip of the shelf fence,
The other end is a wire fixed to a predetermined portion of the bracket via the rotation axis of the shelf fence, and when the sliding link is projected forward, the wire is stretched and the shelf fence projects from the storage position. It is preferable that it is configured to be rotated up to By doing so, the shelf fence is not biased in the protruding position direction at the storage position, the sliding link is smoothly slid, and the shelf fence is simply returned from the protruding position to the storage position. Each link is operated in reverse, and can be easily returned to the normal storage position.

In the article drop prevention device for an article shelf according to the present invention, the sliding link front end is provided with two shelf fences each having a tip directed upward and downward of a shelf plate at a projecting position, and at least one of the shelf fences. However, it is preferable to be rotated in conjunction with the other shelf fence. With this configuration, when a plurality of shelves are provided, the upper part and the lower part of the articles placed on the predetermined shelves are respectively supported at the same time, so that the drop prevention effect of the articles is improved. You.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows an article shelf 1 to which the present invention is applied. , A support 3 erected substantially at the center of the leg 2 in the front-rear direction, and a plurality of locking holes 4 formed in the front and rear surfaces of the support 3 in a vertical direction. Stop piece 5 (see FIGS. 2 and 3)
, Brackets 6 detachably attached to the front and rear of the support 3, and a plurality of shelf plates 7 whose left and right lower surfaces are supported on the brackets 6 respectively attached to the left and right support 3
It is composed of Reference numeral 8 denotes a partition plate provided between the left and right columns 3, 3, and G denotes an article placed on the upper surface of the shelf 7. The lowermost shelf 7 is attached by a bracket 6 having a shape different from that of the upper shelf.

As shown in FIGS. 2 and 3, inside the left and right brackets 6, a rotating link 10 rotatably mounted at one end by a shaft 9 provided at the rear lower end of the bracket 6. An intermediate link 11 having one end pivotally connected to the other end of the rotary link 10 via a shaft (not shown), and a slide having a rear end pivotally connected to the other end of the intermediate link 11 via a shaft 12. A link 13 is provided. At the rear end of the intermediate link 11, a weight member 14 having a predetermined weight is provided so as to project inward.

At a position slightly above the shaft 9, the rotating link 10 is held at a position slightly inclined backward from the top dead center, and at a position where the rotating link 10 rotates forward with a predetermined vibration or more. A locking pin 15 that locks and protrudes inward.

The sliding link 13 is inserted into a channel-like guide member 16 fixed to the front of the bracket 6 so as to be slidably guided in the front-rear horizontal direction. A shaft member 17 protrudes from the front end of the sliding link 13, and a regulating member 18 that regulates rotation of a mounting member described later is formed.

The shaft member 17 has a hole 21 formed at an end of an attachment member 20 attached to both left and right ends of a plate member 19 as a shelf fence having substantially the same lateral width as the shelf plate 7. It is mounted on the shaft via the cover member 23 so as not to deviate. The mounting member 20 and the sliding link 13
Between them, a coil spring 22 is provided as a rotating means of the plate member 19 so that the mounting member 20 is constantly urged to rotate clockwise.

On the upper part of the guide member 16, when the plate member 19 is located below the shelf plate 7 as shown in FIG. 2, a stopper piece 16a for regulating the upward bias of the mounting member 20 is provided.
Are provided so as to protrude inward. In addition, a stopper pin 24 for restricting downward rotation of the mounting member 20 is protruded inward at a substantially central position of the sliding link 13.

The rear end edge 20b of the mounting piece 20a of the mounting member 20 is connected to the regulating member
8 is provided so as to be in contact with the upper end of the plate member 1.
9 can be held in a vertical position.

Next, the action of the article falling of the embodiment of the present invention will be described with reference to FIGS. 4 (a) to 4 (c). First, as shown in FIG. In a normal state, the rotating link 10 is held by the locking pin 15 in a state of being slightly backward from the top dead center. At this time, the tip of the sliding member 13 does not protrude forward from the front end of the shelf 7, and the plate 19 is held at the storage position below the shelf 7. Here, since the mounting piece 20a is located below the stopper piece 16a of the guide member 16,
The rotation is regulated.

At this time, since the links 10, 11, 13 and the guide member 16 are all accommodated in the inner surface of the bracket 6, the appearance from the outside is improved, and the damage due to the impact from the outside is prevented. And the plate member 19 is in the retracted position below the
Since it is held in a horizontal state similarly to 3, it does not protrude below the shelf plate 7 or the like, and does not obstruct the taking out of articles.

When a predetermined or more vibration occurs in the longitudinal direction of the article shelf 1 due to the occurrence of an earthquake or the like, the locking between the rotating link 10 and the locking pin 15 is released as shown in FIG. When the rotating link 10 is rotated forward from the top dead center, the sliding link 13 is moved forward via the intermediate link 11. A plate member 19 whose tip is folded rearward around the shaft member 17 is projected forward of the shelf board 7 and
The plate member 19 is urged to rotate clockwise by the coil spring 22 when the center link 11 and the intermediate link 11 become substantially linear, and the plate member 19 stands upright due to the contact between the rear end edge 20b of the mounting piece 20a and the regulating member 18. At the protruding position.

When the rotating link 10 is further rotated, the sliding link 13 is moved rearward through the intermediate link 11 as shown in FIG.
At the time when the rotary link 1 contacts the front end face 7a of the
Zero rotation is stopped. Further, since the moment of the rotating link 10 is increased by the weight member 14,
Even if a forward load is applied to the plate member 19 by an article placed on the shelf 7, the plate member 19 is not easily moved forward.

The plate member 19 thus protruded upright.
Is provided at the front end of the shelf 7 to effectively prevent the articles placed on the shelf 7 from falling off the shelf 7. In addition, at the time of normal operation, that is, at the time of storage,
Is held in a substantially horizontal state, the height of the plate member 19 should be set to a height high enough to prevent the article from falling off the shelf board without being affected by the thickness of the shelf board 7 or the like. Can be done.

Further, since the plate member 19 is protruded at a position in front of the shelf 7, there is no possibility that the projecting operation is hindered by the articles on the shelf 7, so that it is possible to reliably prevent the articles from dropping.

Next, a second embodiment of the article fall prevention device of the present invention will be described with reference to FIGS. 5 (a) to 5 (c).
The present embodiment is different from the above-described embodiment in that one end is fixed to the locking pin 15 and the other end goes around the front of the shaft member 17 as the rotating means of the shelf fence.
Is that a wire 25 of a predetermined length is fixed to the tip of the wire. 26 is a guide roller for the wire 25.

The operation of the article fall prevention device according to the present embodiment will be described below. When the plate member 19 is at the storage position below the shelf plate 7 as shown in FIG.
Is in a bent state. The plate member 19 is held horizontally by a stopper pin 24.

When vibration is generated and one end of the wire 25 is pulled forward with the forward movement of the sliding link 13 due to the rotation of the rotating link 10, the plate member 19 is moved as shown in FIG. When the wire 25 is projected to a predetermined front position of the shelf board 7, the wire 25 is completely stretched. Sliding link 13
Is moved forward, the tip of the plate member 19 is
5, the plate member 19 is rotated, and is held by the regulating member 18 in an upright state. At this time, the weight member 14 protruding inward is hooked on a predetermined portion of the wire 25.

The rotation link 10 is further rotated, and FIG.
As shown in (c), the wire 25 is connected to the weight member 1.
The rear surface 19a of the plate member 19 is brought into contact with the front end surface 7a of the shelf plate 7 by being pulled by 4 and moving the sliding link 13 backward.

By using the wire 25 as described above, the plate member 19 can be rotated to the protruding position, and the plate member 19 in the state of FIG. 5C, the weight member 14 is reversely rotated by the wire 25, and each link is connected to each of FIGS.
Since the operation is reversed in the order of (a), the plate member 19 can be easily returned to the storage position.

FIGS. 6 and 7 show a third embodiment of the present invention. The difference between the third embodiment and the first embodiment is that a plate member is provided at the front end of the sliding link 13. FIG. 19 is that a plate member 19a that rotates upward and a plate member 19b that rotates downward in conjunction with the rotation of the plate member 19a are provided.

As shown in FIG. 7, both plate members 19a,
19b is an upper and lower shaft member 1 via mounting members 20 and 20 '.
7, 17 ', and are attached to each other by attachment members 20, 2
The gear portions 27, 27 'formed at 0' are provided so as to be interlocked with each other by meshing. Only the upper plate member 19 is urged upward by a coil spring (not shown) and an arc-shaped long hole 28 formed in the mounting member 20.
The rotation is regulated by a regulating pin 29 protruding so as to be inserted into the elongated hole 28.

At the projecting position, the predetermined shelf plate 7
Since the plate members 19a and 19b projecting upward and downward are attached, the upper part and the lower part of the articles placed on the predetermined shelf plate 7 are respectively supported at the same time. The effect is improved.

Further, it is possible to simultaneously project the two plate members 19a and 19b by a simple mechanism without providing a coil spring or the like as a rotating means of the shelf fence on each plate member 19.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

For example, the height and shape of the shelf fence, the rotating means and the like are arbitrary and can be variously modified.

Further, the seismic device may be provided separately from the rotating link, and when the seismic device detects vibration, the locking device may be released and the rotating link may be rotated.

[0037]

The present invention has the following effects.

(A) According to the first aspect of the present invention, the height of the shelf fence is set to a sufficient height to prevent the articles from falling off the shelf without being affected by the thickness of the shelf. In addition, since the shelf fence is projected at a position in front of the shelf, the projecting operation is not hindered by the articles on the shelf. Thus, the article is reliably prevented from falling off the shelf.

(B) According to the second aspect of the present invention, each link is difficult to be seen from the outside, and the appearance is improved.
These links can be protected from external impact.

(C) According to the third aspect of the present invention, since a part of the link is a seismic device, the structure is simplified.

(D) According to the fourth aspect of the present invention, the shelf fence is not urged toward the projecting position in the storage position, and the sliding link slides smoothly.
Just by returning the shelf fence from the protruding position to the storage position, the links are operated in reverse, and it is possible to easily return to the normal storage position.

(E) According to the invention of claim 5, when a plurality of shelves are provided, the upper part and the lower part of the articles placed on the predetermined shelves are simultaneously supported, respectively. The effect of preventing the articles from falling is improved.

[0043]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an installation state of an article shelf to which the present invention is applied.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partially exploded perspective view showing the structure of the article fall prevention device.

FIGS. 4A to 4C are schematic side views showing the operation of the article fall prevention device when an earthquake occurs.

FIGS. 5A to 5C are schematic side views showing the action of the article fall prevention device according to the second embodiment of the present invention when an earthquake occurs.

FIG. 6 is a side view showing an article falling prevention device as a third embodiment of the present invention.

FIG. 7 is an enlarged sectional view of a main part of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Article shelf 2 Legs 3 Prop (shelf support member) 4 Lock hole 5 Lock piece 6 Bracket 7 Shelf 7a Front end face 8 Partition plate 9, 12 Axis 10 Rotation link (Seismic device) 11 Intermediate link 13 Sliding Dynamic link 14 weight member 15 locking pin (locking device) 16 guide member 16a stopper piece 17, 17 'shaft member 18 regulating member 19 plate member (shelf fence) 19a, 19b plate member (shelf fence) 20 mounting member 20a mounting Piece 20b rear end edge 21 hole 22 coil spring (rotating means) 23 cover member 24 stopper pin 25 wire (rotating means) 26 guide roller 27, 27 'gear part 28 long hole 29 regulating pin

Claims (5)

[Claims] An article shelf comprising a shelf support member and a shelf attached to the shelf support member via a bracket, wherein a slide is provided at the front of the bracket so as to be slidable in the front-rear direction. A link, a rotating link having one end pivotally attached to a rear portion of the bracket, an intermediate link having one end coupled to the rear end of the sliding link, and the other end pivotally coupled to the other end of the rotating link, A shelf fence provided at a front end of the link so as to be rotatable between a storage position substantially parallel to the sliding link and a projecting position at which a tip projects at least above or below the shelf plate; Turning means for turning the shelf fence from the storage position to the projecting position when a part of the moving link is projected from the shelf plate front end; and a locking device for locking the turning link at a predetermined position. Detecting the vibration, the locking device And seismic equipment to release the locking of the pivot link by,
After the at least the sliding member is moved forward to a position where the shelf fence can rotate from the storage position to the projecting position by the rotation of the rotation link, the shelf fence is moved to the front end portion of the shelf plate. A device for preventing an article from falling on an article shelf, wherein the article is prevented from being moved backward until the article is held by the article. 2. The apparatus according to claim 1, wherein at least the sliding link, the intermediate link, the rotating link, and the locking device are attached to an inner surface of a bracket. 3. The rotating link is held by a locking pin provided on a bracket so as to be tilted slightly rearward from the vicinity of the top dead center, and is rotated forward by a predetermined vibration or more. The device for preventing an article from falling on an article shelf according to claim 1 or 2, wherein: 4. The rotating means is a wire having one end fixed to a tip of the shelf fence and the other end fixed to a predetermined portion of a bracket via a rotating shaft of the shelf fence, and a sliding link being moved forward. 4. The device according to claim 1, wherein the wire is stretched when the wire is protruded, and the shelf fence is rotated from the storage position to the protruding position. 5. The sliding link front end is provided with two shelf fences, each of which has a tip facing upward and downward of a shelf plate at a projecting position, and at least one of the shelf fences is interlocked with the other shelf fence. 5. The apparatus for preventing an article from falling on an article shelf according to claim 1, wherein the apparatus is adapted to be rotated.