JPS6326045Y2 - - 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 in which the shelves on which goods are placed can be freely pulled out and moved, this is to prevent the shelves from inadvertently retreating when loading and unloading goods, or from unexpectedly protruding from the stored state. , it is necessary to configure the rack so that it can be locked in a state in which it is largely pulled out to the front side of the rack and in a state in which it is fully pushed in. Furthermore, in factories, indoor cranes, etc. are often used to load and unload heavy objects, and at this time, workers must operate the cranes with one hand, so the lock mechanism is easy to operate and reliable. Something that works is required.

As a prior art for this purpose, Utility Model Application No. 56-170118
In the publication, on the front side of the rack main body, the base end of a locking rod is pivoted to a horizontal shaft located above the shelf so as to be movable up and down, and on the upper surface of one side of the rack, a free end of the locking rod is supported on the front side of the rack body. A configuration is proposed in which a front stopper part and a rear stopper part that engage with a laterally protruding pin are appropriately spaced in the front and rear.

[The problem that the idea aims to solve]

According to this configuration, one tip of the pin protrudes horizontally from the front of the front strut, and the locking rod cannot be rotated more than 180 degrees.
For example, when the shelf is pushed in and the pin of the locking rod is engaged with the front stopper, to release it, rotate the pin slightly upward to remove it from the front stopper. When you pull out the shelf and then release your hand from the locking rod, the pin in the locking rod will be in contact with the upper surface of one side of the shelf and will slide as the shelf is pulled out, allowing the pin to pass over the upper surface of the rear stopper. Then, the rear end surface of the rear stopper portion and the pin become engaged.

On the other hand, when disengaging from the rear stopper part that restricts the pushing movement of the shelf in the drawer state, if you release the locking rod after pushing the shelf a little with the pin slightly raised, it will move to the front position than the rear stopper part. When the engagement is released, the shelf must be moved forward or backward a little before the locking lever can be released, so that the pin can be moved freely.

In this case, the operator has to move the locking rod up and down with one hand while moving the shelf back and forth with the other hand, which poses a danger in handling heavy objects. In particular, in the case of a shelf in a drawn-out state, there is a large distance from the front end of the shelf to the front of the rack body, so before and after the disengagement operation, the rotation operation of the locking rod and the operation of pushing the shelf are performed almost simultaneously. The problem was that it was difficult to implement.

The present invention aims to solve this problem.

[Means to solve the problem]

Therefore, in the present invention, a front stopper part and a rear stopper part are provided on one side of the right or left side of a shelf that is supported so as to be movable back and forth with respect to the rack body, and are appropriately spaced from each other. The base end of the locking rod extending in the direction of pulling out the shelf is placed close to one side of the shelf where the stopper portions are provided, so that the locking rod can freely rotate in the vertical and horizontal directions. The locking rod is provided with a locking piece that can be engaged with each of the stopper portions when the locking rod is rotated downward, and the locking piece is provided on the locking rod so that the locking piece can be engaged with each of the stopper portions on one side of the shelf. In the positions adjacent to each side,
A contact portion is provided to hold the locking rod in a state in which the locking piece does not engage with each stopper portion only at the position of each stopper portion, while the locking piece is held against the locking rod. The structure is such that an elastic body is provided that urges it in the horizontal direction so that it can be fitted into each stopper part.

[Functions and effects of the invention]

In this way, the locking piece of the locking rod provided on the front part of the rack body so as to be vertically movable and horizontally rotatable is engaged with each of the stopper parts, and then the locking piece is released from the engagement with each of the stoppers. To release, move the locking rod vertically and horizontally in an inverted U-shape so as to straddle the abutting portions provided on the side adjacent to each stopper, and then release the locking piece. If the stopper comes into contact with the side surface of the contact portion, the unlocked state at the stopper portion can be maintained.

In this way, when the lock is released, the amount of rotation of the locking rod is changed from the state in which it is engaged with the stopper part to the opposite side by straddling the contact part located adjacent to the stopper part, in a substantially inverted U-shape. It is extremely easy to operate, as all you have to do is move it.

After performing this lock release operation, the worker does not need to hold the locking rod in his hand, and can concentrate on moving the shelf back and forth.Furthermore, the operator can press it with the elastic body without any additional effort. As the shelf moves forward or backward, the energized locking rod disengages from the abutting part and stabilizes at a position where it can engage with both stopper parts. Since it automatically engages with the stopper part and locks the shelf so that it cannot be pulled out when it is stored or cannot be pushed when it is pulled out, it has the effect of improving workability and safety when unlocking the shelf. .

〔Example〕

Next, an embodiment of the present invention will be described. In the figure, reference numeral 1 indicates a side frame 4 formed by connecting front and rear supports 2, 2' having a rectangular cross-section or the like with depth cross beams 3, 3. The rack main body is shown vertically spaced apart from each other to the left and right.

Reference numerals 6 indicate the left and right side frames 4 of the rack main body;
4, the shelves are arranged in multiple stages vertically and are movable back and forth, and the front and rear longitudinal side members 7, 7 on both the left and right sides of each shelf are formed in a U-shape in cross section, and their openings are arranged outside each other. Wheels 9, 9 that fit into rails 8, 8, which will be described later, are rotatably supported at the rear ends of both side members 7, 7.

Reference numeral 8 denotes a rail having a U-shaped cross section, which is disposed facing the side members 7, 7 of the shelf 6 so as to guide and support both left and right sides of the shelf 6 in the front and back direction.
are located substantially horizontally inside the left and right side members 7, 7, facing each other at the same height position, and each rail 8, 8
A bracket 10, 10 having an L-shaped cross section or the like is fixed to the front part of the support column 2,
Place it in contact with the side of 2 and secure it with bolts, etc. Also,
The left and right front brackets 10 have the shelves 6, respectively.
Support rollers 11 that support the lower surfaces of the left and right side members 7 of
will be established.

Reference numerals 12 and 13 denote a front stopper part and a rear stopper part which are provided on one side of the right or left side of the shelf 6 along the front and rear direction of the drawer of the shelf 6 and are appropriately spaced apart from each other.
As shown in the figure, the outer edge of the upper plate of the left side member 7 of the shelf 6 is formed by notching the left end face appropriately inward in width.

The front stopper part 12 is designed so that it can engage with a locking piece 16 provided on a locking rod 14, which will be described later, when the shelf 6 is stored.
3 are provided so as to be able to engage with the locking pieces 16 of the locking rod 14 when the shelf 6 is pulled out.

Reference numeral 14 denotes a locking rod that is located at an appropriate height from the top surface of the shelf 6 at the front of the inner surface of the side frame 14 and is elongated in the direction of movement of the shelf 6. connects the pivot shaft 17 to the shelf 6
The pivot shaft 17 is provided horizontally at right angles to the direction of movement of the pivot shaft 17.
The rear base of the locking rod 14 is pivotally connected to the locking rod 1 so that it can freely rotate vertically and horizontally.
The front end of the rack body 1 is made to face the front side of the rack body 1 and is used as an operating part 15, and a locking piece 16 is provided to protrude downward approximately at the lower center.

In this embodiment, the locking piece 16 is formed at the front and back midway between the operation part 15 and the pivot shaft 17, but the position near the operation part 15 is set as the pivot shaft 17, and the locking piece 16 is formed at the back side of the pivot shaft 17. may be provided.

The locking rod 14 is urged in the horizontal direction by a spring 18 fitted onto the pivot shaft 17 so that the locking piece 16 can be held in a position where it can fit into both the stoppers 12 and 13.

Further, reference numerals 19 and 20 are abutting parts for holding the locking body 14 horizontally rotated to the right so that the locking piece 16 does not return to the stopper parts 12 and 13 after the lock is released. Shelf 6 from parts 12 and 13
A plate-shaped member having a substantially rectangular shape in plan view and an appropriate height is installed at an inner position longitudinally in the moving direction of the shelf 6.

Since a downward moment is always acting on the locking rod 14 due to its own weight, if no external force is applied from other sources, the locking piece 16 will move along the straight line connecting the two stopper portions 12 and 13 on the upper surface of the shelf side member 7. to touch.

In other words, as shown in the embodiments of FIGS. 4 to 6, when the longitudinal direction of the locking rod 14 biased by the spring 18 is parallel to the longitudinal movement direction of the shelf 6, the locking piece 16 is the both stopper parts 12,1
3, and when the locking piece 16 is separated in a horizontal position so as to come into contact with each of the contact portions 19 and 20 against the force of the spring 18, each of the contact portions The stopper portions 12 and 13 located adjacent to the portions 19 and 20 cannot be engaged with each other.

In addition, in the present invention, instead of protruding the abutting parts 19 and 20 on the upper surface of the shelf side member 7, grooves 19' and 2 are provided on the upper surface of the shelf side member 7 with a width that allows the lower end of the locking part 16 to fit into the grooves 19' and 20.
0' may be formed as a recess (see the dashed line in FIG. 4).

Further, in FIG. 7, reference numerals 21 and 22 are stoppers that restrict the maximum movement position of the shelf 6 when it is pulled out or pushed in.

Next, the method of operating the locking body 14 will be described. In the solid line shown in FIGS. 4 and 5, when the shelf 6 is in the stored state, the locking piece 16 fits into the front stopper part 12, making it impossible to pull out. It is locked.

When pulling out the shelf 6 from this state, as shown by the two-dot chain line in FIG.
5 to release the lock, and then rotate the locking rod 14 horizontally to the right against the force of the spring 18, as shown by the two-dot chain line in FIGS. 4 and 6, to release the locking piece 16. is brought into contact with the inner surface of the contact portion 19 (the side surfaces near the left and right center of the shelf).

At this time, the side surface of the locking piece 16 of the locking rod 14 is pressed against the contact portion 19 by the repulsive force of the spring 18, but as the shelf 6 is pulled out, the contact portion 19
is removed from the locking piece 16, and the locking rod 14 horizontally rotates to the left due to the biasing force of the spring 18, and the locking piece 16 closes both stopper portions 12, 1 on the upper surface of the side member 7.
Located on the straight line connecting 3.

Therefore, if the shelf 6 is pulled out further, the locking piece 16 will automatically fit into the rear stopper part 13 due to the weight of the locking rod 14, and the shelf 6 will be pushed in in the pulled out state as shown in FIG. It becomes locked down. When pushing in the shelf 6, release the lock using exactly the same procedure, and if the shelf 6 is pushed in almost completely, the locking piece 1 will be released.
6 automatically falls into engagement with the front stopper portion 12 and is locked in the stored state so that it cannot be pulled out.

In this embodiment, a coil spring is used to hold the locking rod 14 in a fixed position, but other elastic bodies such as a plate spring or urethane rubber may be used, and the mounting position is not limited to the pivot shaft 17. Of course, it is also possible to use a spring that has a biasing force not only in the axial direction of the pivot shaft 17 but also in such a way that the locking piece 16 of the locking rod 14 is directed downward; in this case, the locking Since the rod 14 is biased downward by the spring in addition to the downward moment due to its own weight, the engagement with the stoppers 12 and 13 becomes even more reliable.

Further, in the illustrated embodiment, the stopper parts 12 and 13 are formed by cutting out the side member 7, but a plate-shaped stopper part that is rectangular in plan view and has an appropriate height is formed on the upper surface of the side member 7 so that its longitudinal direction is the direction in which the shelf 6 moves. In this case, the locking piece 16 at the bottom of the locking rod 14 is formed into an inverted isosceles triangular shape when viewed from the side, and the locking piece 16 extends from the apex toward the base. A groove into which the stopper part can be fitted may be cut out, and the groove and the stopper part may be connected so as to fit into each other.

In this way, a longitudinal locking rod provided with a locking piece is pivotally attached to the rack body so as to be able to rotate vertically and horizontally, and the locking rod has a locking piece that is aligned with the shelf. An elastic body is attached to one side of the shelf so as to keep the shelf positioned an appropriate distance inward, and one side of the shelf is engaged with the locking piece to prevent the shelf from being pulled out and moved in the stored state. A front stopper section that locks the shelf and a rear stopper section that locks the shelf so that it cannot be moved when pushed in when the shelf is pulled out are provided, and at positions adjacent to the right or left of both stopper sections on the upper surface of one side of the shelf,
Since the structure is such that a contact portion is provided to maintain the locking rod in a state in which the locking piece cannot engage with both stopper portions, the locking rod can be rotated from each stopper portion so as to straddle the contact portions. If you release the lock by simply moving it, the locking rod, which is biased by the elastic body, will move away from the contact part as the shelf moves forward and backward, without any additional effort. As the shelf comes off, it becomes stable in a position where it can engage with both stopper parts, and as the shelf moves forward or backward, it automatically engages with the rear stopper part or the front stopper part, so that the shelf can remain in the stored state and cannot be pulled out. Since it can be locked so that it cannot be pushed in when it is pulled out, it has excellent workability and safety.

Furthermore, since the pivoting of the locking rod by the pivot shaft is rough and there is little friction surface, the downward rotation of the locking rod is smooth, the engagement with the stopper portion is reliable, and there is no malfunction.

In addition to these effects, it also has the advantage of reducing manufacturing costs due to its simple structure and shape.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a perspective view of the rack, Fig. 2 is a side view, Fig. 3 is a plan view from the side of Fig. 2, and Fig. 4 is an enlarged view of the main part of Fig. 3. 5 is a side view of FIG. 4, FIG. 6 is a front view of FIG. 4, and FIG. 7 is a diagram showing the operation. 1... Rack body, 4, 4... Side frame, 6...
Shelf, 8, 8... Rail, 12... Front stopper part, 13... Rear stopper part, 14... Locking body,
16... Locking piece, 17... Pivoting shaft, 18... Spring, 19, 20... Contact portion.

Claims (1)

[Scope of utility model registration request] A front stopper part and a rear stopper part are provided on one side of the right or left side of the shelf supported so as to be movable back and forth with respect to the rack body, and are appropriately spaced apart from each other. Proximally to one side where the stopper portion is provided, the base end of a locking rod extending in the direction of pulling out the shelf is pivotally mounted so that the locking rod can freely rotate in the vertical and horizontal directions; The locking rod is provided with locking pieces that can be engaged with the respective stopper portions when the locking rod is rotated downward, and the locking pieces are provided on one side of the shelf adjacent to the stopper portion and the rear stopper portion, respectively. A contact portion is provided at the position of each stopper portion so that the locking rod is held in a state in which the locking piece does not engage with each stopper portion. A locking device for a pull-out shelf in a rack, comprising an elastic body that biases the locking piece in the horizontal direction so that it can fit into each stopper part.