JPS6326039Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a locking device for a pull-out shelf in a rack for storing articles.

[Conventional technology]

In factories, warehouses, etc., in racks where the shelves on which goods are placed can be pulled out and moved freely, it is necessary to prevent the shelves from being inadvertently moved back when loading and unloading goods onto the shelves.
In addition, in order to prevent the shelf from unexpectedly protruding forward from the stored state, the shelf is locked when it is pulled out to the front of the rack body, and it is also possible to lock the shelf when it is pushed inside the rack body. As a prior art, Japanese Utility Model Application Publication No. 54-22931 discloses a front locked part that extends appropriately in the direction in which the shelf is pulled out and faces forward on the top surface of the side of the shelf, and a rear locked part that faces forward. A movable stopper is provided on the front side of the rack body, which is reversible back and forth about the horizontal pivot axis above the longitudinal movement path of each of the locked parts, and the movable stopper is provided on the front side of the rack main body. The proposed structure is such that the stopper is reversed in either the front or rear direction and is selectively locked to the locking portion on either the front or rear of the shelf.

[The problem that the idea attempts to solve]

According to this configuration, for example, when the movable stopper is locked to the rear locked portion, the shelf pulled out forward can be prevented from moving backward to some extent, but it cannot be prevented from moving forward. However, when an item is placed on or taken out from a shelf in a pulled-out state, the shelf moves forward.

In addition, in order to reversely rotate the movable stopper from the state where it is once locked to the rear locked part to the state where it is locked to the next front locked part, the movable stopper must be rotated upward 180 degrees around the lateral pivot axis. If the movable stopper is simply rotated upward by a slight angle so as to disengage from the rear locked part, the movable stopper will return to its original position due to its own weight, and even if you push the shelf in this state. However, there was a problem that the front locking part could not be locked.

The present invention aims to solve these problems.

[Means to solve the problem]

Therefore, in the present invention, the shelf is supported between the left and right side frames of the rack main body so that the drawer can be moved back and forth, and a front stopper part and a rear stopper part are provided on one side edge of the shelf, separated as appropriate along the direction of movement of the shelf. At the same time, the lower part of the locking body disposed in the gap between one side edge of the shelf on which both the stopper parts are provided and the inner surface of the side frame facing this is swung to a position closer to the front of the inner surface of the side frame. The locking body is movably supported, the upper end of the locking body faces the top surface of the shelf, and the locking body is moved in a direction in which the upper end approaches the central part of the shelf, which is approximately perpendicular to the direction of movement of the shelf, and from thereon. When the upper end of the locking body is tilted toward the center of the shelf, the locking body locks with one of the stoppers and moves the shelf back and forth. A downward guide body is provided on the lower surface of one side edge of the shelf to protrude between the two stopper parts, and the stopper body has a structure that abuts the guide body as the shelf moves back and forth. An abutment is provided for tilting the upper end of the locking body toward the center of the shelf.

[Functions and effects of the invention]

In this way, the locking body is arranged in the gap between one side edge of the shelf where both the front and rear stopper parts are provided and the inner surface of the side frame facing this, and the lower end of the locking body can be freely swung against the inner surface of the side frame. Since the upper end faces the upper surface of the shelf, most of the locking body can be stored within the gap, improving the appearance and allowing the locking body to be operated from the top surface of the shelf.

A guide end is provided to protrude downward on the lower surface of one side edge of the shelf at a midway position of both stoppers, and the locking body is provided with the locking body tilted in a direction away from the center of the shelf. Since there is a contact piece that comes into contact with the guide body, all you have to do is remove the locking body from the stopper part of the shelf.
After that, no matter which direction the shelf moves back and forth, it can be automatically locked to the stopper part.
This has the effect of reliably preventing the shelf from advancing or retreating.

In addition, by tilting the locking body at a slight angle in the direction away from the center of the shelf,
This has the effect that it is possible to prevent and release the back and forth movement of the shelf, and the operation is extremely simple.

〔Example〕

Next, an embodiment of the present invention will be described. Reference numeral 1 indicates front and rear supports 2, 2' having a rectangular cross section, etc.
This figure shows a rack main body in which side frames 4 are connected at 3 and are erected at appropriate distances to the left and right via cross beams 5, 5 in the frontage direction.

Reference numeral 6 indicates a shelf which is arranged vertically in multiple stages between the left and right side frames 4, 4 of the rack main body 1 and is movable back and forth. It is formed into a U-shape, with its openings facing outward, and wheels 9, 9, which fit into rails 8, 8, which will be described later, are rotatably supported at the rear ends of both side members 7, 7.

Reference numerals 8, 8 denote rails having a U-shaped cross section, which are disposed facing the side members 7, 7 of the shelf 6 so as to guide and support the left and right sides of the shelf 6 in the front and back direction.
8 are arranged substantially horizontally inside the left and right side frames 4, 4 facing each other at the same height position, brackets 1 having an L-shaped cross section or the like are installed at the front and rear of each rail 8.
0 and 10' are fixed, and both brackets 10 and 10' are brought into contact with the side surfaces of the front and rear struts 2 and 2', and fixed with bolts or the like.

Furthermore, support rollers 11 are provided on the left and right front brackets 10, respectively, to support the lower surfaces of the left and right side members 7 of the shelf 6.

Among the side members 7 forming the left and right side edges of the shelf 6, one of the outer side edges of either the right or left side member 7 is provided with a spacer at an appropriate distance from front to back along the front and back direction of the drawer of the shelf 6. A front stopper part 12 and a rear stopper part 13 are formed.

In the embodiment shown in FIGS. 3 and 5, the outer edge of the upper plate of the left side member 7 of the shelf 6 is cut out in a rectangular shape in plan view by an appropriate width to form a front stopper part 12 and a rear stopper part 13, respectively.

Reference numeral 14 denotes a lock provided at a position closer to the front of the inner surface of the side frame 4 facing one side edge of the shelf where the stopper parts 12 and 13 are provided, so as to be swingable in the left-right direction perpendicular to the front-rear movement direction of the shelf. In this embodiment, the lower end 16 of the locking body 14 is inserted and supported into the hole 15 bored in the upper plate of the left rail 8, and the middle part 14 of the locking body 14 is
a is made to face the gap between the side frame 4 and one side edge of the shelf 6, and the upper end 17 of the locking body 14 is made to face the upper surface side of the one side edge of the shelf 6 from the gap, and also faces the left and right center portions of the shelf. Form by bending in the direction of approach.

When the upper end 17 of the locking body 14 is tilted so as to slightly deviate the center of gravity toward the center of the shelf 6, which is perpendicular to the direction of movement of the shelf 6, the middle part 1 of the locking body 14
4a fits and locks into the front stopper part 12 or the rear stopper part 13, and can prevent the shelf 6 from moving back and forth at that position. The rear stopper section 13 is provided for the purpose of holding the shelf 6 in the drawn-out position.

And, contrary to the above, the upper end 17 of the locking body 14
When the stopper portion 1 is tilted away from one side edge of the shelf 6 so as to contact the inner surface of the side frame 4, the stopper portion 1
2 or 13.

Reference numerals 18 and 19 are support side plates that support the locking body 14 on both front and rear sides in the moving direction of the shelf 6.

Reference numeral 20 indicates an abutment that projects from the middle part 14a of the locking body 14 toward the lower surface of the upper plate of the side member 7 of the shelf 6, and reference numeral 21 indicates a contact that protrudes from the middle part 14a of the locking body 14 toward the lower surface of the upper plate of the side member 7. The guide body 21 is a guide body that protrudes downward at an intermediate position in the front and back of the sections 12 and 13, and the guide body 21 is inclined downward as the front side goes rearward along the front and back movement direction of the shelf 6, and the rear side goes rearward. Accordingly, the surface is formed to be a so-called downwardly convex curved surface that is inclined upwardly.

Therefore, the locking body 14 whose upper end 17 is tilted toward the inner side of the side frame 4 of the rack body 1 is such that the abutment 20 attached thereto moves toward the front or rear side of the guide body 21 as the shelf 6 moves back and forth. When abutting against the lower side surface, the posture can be changed so that the upper end 17 side of the locking body 14, and by extension the midway portion 14a, tilts toward the center of the shelf.

In this configuration, as shown in FIG.
With the locking body 1 pushed into the rack body 1, if the upper end 17 of the locking body 14 is tilted toward the center of the shelf 6 (arrow A) with your finger as shown by the two-dot chain line in FIG.
The middle part 14a of the locking body 14 fits into the front stopper part 12 and can prevent the shelf 6 from moving forward.On the other hand, when the locking body 14 is tilted in the direction of arrow B, it comes off from the front stopper part 12 and the shelf 6 can be pulled out.

In the middle of pulling out the shelf 6, the guide body 21
When the front side surface of the locking body 14 hits the abutment 20, the bottom surface of the guide body 21 presses the abutment 20 downward, and the center of gravity of the locking body 14 moves toward the center of the shelf, causing the locking body to move. The upper end 17 of the locking body 14 tilts toward the center of the shelf (see the dashed-dotted line in FIG. 5), and the middle part 14a of the locking body 14 leans against the outer side edge of the upper plate of the side member 7 of the shelf 6. , when it reaches the position of the rear stopper part 13, it will fit into this and be automatically locked (see the two-dot chain line in Figure 5).

Similarly, the abutment 20 of the locking body 14, which is tilted so as to be removed from the rear stopper part 13 when the shelf 6 is pulled out, comes into contact with the guide body 21 in the middle of the push-in movement of the shelf 6. After the upper end 17 of the locking body 14 is tilted toward the center of the shelf, the middle part 1
4a leans against one edge of the outer side of the upper plate of the side member 7 of the shelf 6, and can be automatically locked to the front stopper portion 12 at the push-in position of the shelf 6.

In this way, the present invention provides a locking body in the gap between one side edge of the shelf provided with both front and rear stopper parts and the inner surface of the side frame facing this, and the lower end of the locking body is connected to the inner surface of the side frame. Since the locking body is swingably supported and its upper end is exposed to the top surface of the shelf, most of the locking body can be stored within the gap, improving the appearance and allowing the locking body to be operated from the top surface of the shelf.

A guide end is provided to protrude downward on the lower surface of one side edge of the shelf at a midway position of both stoppers, and the locking body is provided with the locking body tilted in a direction away from the center of the shelf. Since there is a contact piece that comes into contact with the guide body, all you have to do is remove the locking body from the stopper part of the shelf.
After that, no matter which direction the shelf moves back and forth, it can be automatically locked to the stopper part.
It is possible to reliably prevent the shelf from advancing or retreating.

By tilting the locking body at a small angle in a direction away from the center of the shelf, it is possible to prevent and release the back and forth movement of the shelf.The operation is extremely simple, and the tilting of the locking body can be prevented. The structure also has the advantage of being extremely simple and compact.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the rack, FIG. 2 is a side view, FIG. 3 is a plan view taken along the - line in FIG. 2, and FIG. 4 is a view taken along the - line in FIG. 3. A partially cutaway view, FIG. 5 is an enlarged sectional view of a main part taken along the line - in FIG. 3, and FIG. 6 is an explanatory view of the operation shown in the - line in FIG. 1... Rack body, 4, 4... Side frame, 6...
Shelf, 7, 7... Side member, 8, 8... Rail, 12
...Front stopper part, 13...Rear stopper part,
14...Locking body, 14a...Middle part, 16...Lower end, 17...Upper end, 15...Hole, 20...Abutment, 21...Guide body.

Claims (1)

[Scope of utility model registration request] A shelf is supported between the left and right side frames of the rack main body so that the drawer can be moved back and forth, and a front stopper part and a rear stopper part are provided on one side edge of the shelf, appropriately spaced apart along the movement direction of the shelf. A lower part of a locking body disposed in a gap between one side edge of the shelf provided with the part and the inner surface of the side frame facing the side edge is swingably supported at a position closer to the front of the inner surface of the side frame, The upper end of the locking body faces the top surface of the shelf, and the upper end of the locking body can be tilted in the direction toward the center of the shelf, which is approximately perpendicular to the direction of movement of the shelf, and in the direction away from it. When the upper end of the locking body is tilted toward the center of the shelf, the locking body is configured to lock on one of the stoppers to prevent the shelf from moving back and forth. A downward guide body is provided on the lower surface of one side edge of the shelf to protrude between the two stopper parts, and the locking body comes into contact with the guide body as the shelf moves back and forth. A locking device for a pull-out shelf in a rack, which is provided with an abutment that tilts the top end toward the center of the shelf.