JPH023444Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a fluidized shelf that slopes diagonally downward from the loading side to the unloading side. This invention relates to a rail fixing structure on the side rails of a floating shelf.

Prior Art As shown in Fig. 1, a rail is inclined downwardly from one opening side, which is the loading side, to the other opening side, which is the loading side. A fluid shelf with a large number of rollers pivotally attached to each shelf can store many items of the same type in a first-in, first-out manner in one shelf booth, and it is also possible to change the types of articles stored in each shelf booth. Therefore, the floating shelves are widely used in factory assembly sites, etc., where large quantities of various types of items are stored and taken out from a relatively narrow shelf width range as needed. I'm getting old.

The cross-sectional shape of the conventional fluidized shelf rail is U
It was formed in a U-shape or an inverted U-shape, and the front and rear ends of the rail were supported on the side rails of the shelf.
With a letter-shaped rail, when a vertical load is applied to the rollers pivotally supported by the rail, there is no part to prevent the upper edges of the rail from expanding, so when an excessive load is applied, Both upper edges of the rail widened, and the rollers that were pivotally supported on both sides of the rail sometimes came off.

In addition, in the latter conventional floating shelf equipped with rails formed in an inverted U-shape, rail fixing pieces are attached to predetermined locations on the side rails of the shelf, and both lower edges of the rail are attached to both sides of the rail fixing pieces. Because the rails are arranged on the horizontal rails so as to be held in place, both lower edges of the rails come into contact with the horizontal rails, creating a frictional force between them, which somewhat prevents the lower edges of the rails from spreading. However, since there is no way to actively prevent the lower edges of the rail from widening, this also has the same drawbacks as mentioned above.

Problems to be Solved by the Invention However, in the above-mentioned conventional fluidized shelf, as shown in Figures 6 and 7, the rail has an inverted U-shape in which both lower end pieces c of both side pieces b of the rail a are inside. An engagement concave shape that is bent toward the U-shape and curved inwardly above the U-shaped lower end bent piece c so as to be able to engage with the engagement step h of the horizontal beam g. d was formed.

However, since the engaging recess d is adjacent to the U-shaped bent piece c, it is extremely difficult to bend the upper and lower parts e and f of the engaging recess d inward at right angles. As a result, the upper and lower lower pieces e and f were inclined inward.

Therefore, although the side pieces b are prevented from expanding outward by the engaging stepped portions h against the downward load applied to the rail a, against the lateral load that occurs when loading and unloading articles, The vertically sloping pieces e and f of the engagement recess d slide on the engagement step h of the crosspiece g, and the engagement recess d easily comes off from the engagement step h, resulting in extremely poor resistance to lateral loads. low.

In particular, the guide rail (not shown) that restricts the lateral movement of the article is tall and receives a strong lateral load, so the vertically inclined portion e of the engaging concave shape d,
The sliding force acting on f and the engaging stepped portion h became significantly large, making them more likely to come off and unable to function as a guide rail.

In addition, since the engagement recess d is not on the lower edge of both side pieces b, but is located relatively closer to the upper edge of both side pieces b, when engaging the engagement recess d with the engagement stepped portion h, b
Since the inclination angle of inward deformation is large, it is necessary to apply a large force to both pieces d, and it is difficult to attach the rail a to the crossbar g. Therefore, it is necessary to make the engagement recess d shallower. Ta.

Furthermore, in the horizontal rail g of the fluidized shelf described above, not only the protruding piece i provided at both ends with the engaging stepped portion h that engages with the engaging concave shape d of the rail a, but also the adjacent rail supporting portions j. Since the horizontal rail g is bent upward at a right angle from the flat part k, the front and rear width of the rail support part j that supports the U-shaped lower end piece c of the rail a from below is approximately the thickness of the horizontal rail g, and the lower end of the rail The contact area between the piece c and the rail support part j becomes extremely narrow, and the surface pressure on the contact surface becomes extremely high against the vertical load applied to the rail a.
One or both of them were extremely susceptible to deformation and friction.

Means and Effects for Solving the Problems The present invention relates to an improvement of the side rails of a fluidized shelf that overcomes the above-mentioned difficulties. Rails with an inverted U-shaped cross section are installed on the side rails at predetermined intervals in the width direction of the shelf frame, and are oriented in the inclination direction. In a fluid shelf in which the engaging portions are formed by bending, and the engaging portions on both sides of the rail are elastically deformed at both ends in the longitudinal direction to be engaged with the locking claws of the crossbars of the shelf frame, the rail is bent. A plurality of through holes are formed at predetermined intervals in the flat support part of the horizontal rail that supports both ends, and the synthetic resin engages and locks the both side edge locking parts of the rail. The locking piece made of material includes a main body having a length that is an integral multiple of the interval between the through holes, a projecting piece formed upward from both ends of the main body at right angles, and a projecting piece provided inwardly from the upper end of the projecting piece. The width of the locking pawl is equal to the width of the through hole, and the both side edge engaging portions of the rail are engaged between the lower surface of the locking pawl and the upper surface of the flat support portion of the crossbar. Since the locking pawl is projected upward to a height sufficient to allow the horizontal support, only the hole for fitting the locking piece is provided on the flat support surface of the crosspiece, making the machining extremely simple. It is possible to easily transport the logs by stacking them on top of each other.

Further, in the present invention, in a state where both side surfaces of the rail of the fluidizing shelf are elastically deformed so as to incline inwardly, both side edge engaging portions of the rail are fitted into the locking claws of the locking piece. Accordingly, the rail can be firmly fixed to the crossbar not only in the upper and side directions but also in the rotational direction centered on the longitudinal direction of the rail.

Furthermore, in the present invention, since the lower surfaces of the both side edge engaging portions of the rail are in wide contact with the flat supporting portion surface of the horizontal rail, the contact per unit area is reduced with respect to the vertical load applied to the rail. The surface pressure is low, the amount of deformation of the rail and side rail is small, and it is difficult to wear.

Further, since the locking piece is processed by injection molding of synthetic resin, the molding process is easy and the cost is low.

Embodiments Hereinafter, the present invention will be described with reference to embodiments shown in FIGS. 1 to 4.

FIG. 1 is a perspective view of a fluid shelf equipped with an embodiment of a crossbar according to the present invention, and 1 is a pillar of the fluid shelf whose upper and lower ends are integrally engaged with a side frame 2 by bolts and nuts 5. The upper and lower ends of the column frame 1 are also removably engaged with the front and rear frames 3 and bolt nuts 5, and the upper and lower side frames 2 are removably engaged with both ends of the brace 4 with bolt nuts 5. The main frame of the fluid shelf is assembled three-dimensionally.

Further, the front and rear ends and intermediate ends of the pair of left and right side rails 6 are integrally joined by a horizontal rail 7 and a middle horizontal rail 8 to form a shelf frame 9.

FIG. 2 is a perspective view of this embodiment in which the crosspiece is provided with a through hole, and the flat support portion 7a of the flat surface of the crosspiece 7 is
A large number of rectangular through-holes 7b, which are elongated in a direction perpendicular to the longitudinal direction, are formed at regular intervals along the longitudinal direction by punching using a press or the like.

FIG. 3 is a perspective view of the locking piece 10 of this embodiment used for a horizontal crossbar, and this locking piece 10 has the through hole 7.
The main body 10a of the locking piece 10 is set to have a length twice as long as the distance b, the protruding pieces 10b are formed perpendicularly upward from both ends of the main body 10a of the locking piece 10, and the protruding pieces 10b are It consists of a locking claw 10c projecting inward from the upper end at right angles, and this locking claw 10c
The width of the through hole 7b is formed to be equal to the width of the through hole 7b. Further, the inner surface of the main body 10a of the locking piece 10,
The height to the lower surface of the locking pawl 10c is such that the protrusion 10b of the locking piece 10 and the locking pawl 10c are
While the flat support portion 7a is fitted into the through hole 7b from below, the engaging portions on both side edges of the rail, which will be described later, are engaged between the lower surface of the locking pawl 10c and the upper surface of the flat support portion 7a. The locking claws 10c are made to protrude upward with a sufficient interval to allow the locking claws 10c to move.

Furthermore, four pairs of roller rails 11 and three guide rails (not shown) are attached to the locking claws 10c on the shelf frame 9, as will be explained in detail later.

FIG. 4 is a perspective view of the main part of the roller rail mounted on the crossbar of this embodiment. A portion 11b near this center line 11a is bent downward at a right angle by a certain width as an axis of symmetry, and a portion 11c following this top surface portion 11b is overlapped and deformed inward, and this overlapped bent portion It is formed with both side edge engaging portions 11d which are bent outward at right angles. The distance between the pair of rising portions 11c is set equal to the distance between the end surfaces of the locking claws 10c that protrude inwardly from the upper ends of the adjacent protrusions 10b, and the side edge engaging portions 1
The thickness of 1d is set to be slightly thinner than the distance between the upper surface of the horizontal support portion 7a and the lower surface of the locking claw 10c.

In addition, the molding of the guide rail (not shown) is also
With the width center line oriented in the longitudinal direction of a band-shaped plate of a constant width as the axis of symmetry, the part near this center line is deformed into a round curve, and after folding the part following this circular curved part parallel to this parallel part, The continuing part is bent outward by about 45 degrees, the part following this inclined part is folded inward by about 45 degrees, the part following this rising parallel part is overlapped inward and deformed, and this overlapped part is It is formed with both side edge engaging portions bent outward at right angles. The distance between the pair of rising portions and the thickness of both side edge engaging portions are determined by the roller rail 1 described above.
Each setting is the same as that of 1.

Furthermore, as shown below, a large number of rollers 12 are pivotally supported on the roller rail 11 at regular intervals along the longitudinal direction of the rail 11.

FIG. 5 shows a cross-sectional side view of the roll rail taken along the line V-V in FIG. As shown in FIG. 5, a disk 12b is provided to protrude outward from the longitudinal center of the central shaft portion 12a, and four reinforcing pieces 12c are provided to protrude from the central shaft portion 12a in the radial direction. A cylindrical rim 12d is integrally formed on the outer periphery of the disk 12b and the reinforcing piece 12c.

Furthermore, the top surface portion 11 of the roller rail 11
A rectangular hole 11e is provided in the longitudinal direction of b, and a support hole 11f into which the roller center shaft 12a can be loosely fitted is provided directly below the longitudinal center line of the rectangular hole 11e, and the center shaft portion 12a is firmly fixed. The support hole 11f is drawn so that a reinforcing piece 11g extending outward from the bottom to the side thereof is formed so as to support the support hole 11f.

The actual machining of the roller rail 11 and the mounting of the rollers 12 are performed in the following order.

First, the rectangular hole 11e and the support hole 1 are formed on the strip plate.
Punching of 1f and drawing of reinforcing piece 11g are performed simultaneously using a press, and then roller drawing is performed to overlap and deform the overlapping portion corresponding to both side edge engaging portions 11d, and to bend the overlapping portion at an outward right angle. These processes are performed continuously in the order of bending deformation process (both side edge engaging parts 11d) and right angle bending process of the rising part 11c with respect to the top surface part 11b, and during the final process, an automatic feeding device ( Although the roller 12 is fitted into the rectangular hole 11e and the support hole 11f while being supplied by a roller (not shown), the order of these processes can be changed as necessary.

In the embodiment described above, the roller rail 11 and the bent portion 11d of the guide rail (not shown) that engage with the locking pawl 10c may be reinforced by being overlapped.

Since the embodiment shown in FIGS. 1 to 5 is constructed as described above, the roller rail 11
are continuously formed by punching and drawing by pressing and a series of roller drawing, and the rollers 12 are automatically attached to the roller rail 11.

Furthermore, the guide rail (not shown) is formed continuously and efficiently by a series of roller drawing operations.

In particular, the through hole 7b of the crosspiece 7 can be formed by punching by press working, and the locking piece 10 fitted into the through hole 7b is formed by injection molding of a resin such as high-density polypropylene resin. The fitting into the through hole 7b is very easy.

In addition, since both side edges of the roller rail 11 are overlapped and bent outward at right angles, and these are cold worked, the section modulus of the rail (including the guide rail) 11 becomes extremely large. Although the rail 11 is made of a relatively thin plate, it has extremely high rigidity and strength.

Further, the both side edge engaging portions 11d formed by one overlapping bent portion of the rail 11 are inserted between the flat support portion 7a of the crossbar 7 and the locking claw 10c of one of the locking pieces 10, While elastically deforming the rail 11 by hand so as to move the other side edge engaging portion 11d inward, the same side edge engaging portion 11d is moved between the locking claw 7c of the other protruding piece 10b and the flat support portion 7a. Insert it between
Once the hand is released, the elastic restoring force of the rail 11 allows the rail 11 to be easily attached to the crossbar 7.

Also, due to the elastic restoring force of the rail 11, the rail 1
The rising parallel portion 11c of the locking piece 10 is strongly pressed against the end surface of the locking pawl 10c, and the both side edge engaging portions 11d are between the upper surface of the flat support portion 7a of the crossbar 7 and the lower surface of the locking pawl 10c. Because it is held between the two, it can strongly resist upward pulling force, and can also strongly resist left and right lateral forces.

Furthermore, since the lower surface of the both side edge engaging portions 11d of the rail 11 and the upper surface of the flat support portion 7a of the crossbar 7 are in contact over a wide area, even if the vertical load of the article is considerably large, both sides of the rail The edge engaging portion 11d and the horizontal support flat support portion 7a are hardly deformed, and the rail 11 is moved from the horizontal support 7 by the impact force that occurs when loading and unloading articles.
Even if there is slight movement against the contact surface, there is almost no wear on the contact surface between the two.

Moreover, the outer edges of the both side edge engaging portions 11d of the rail 11 are rounded and curved, and the sharp strip side edges are located inward from this, so when the rail is attached or detached,
Even when the side edge engaging portions 11d are deformed so as to be moved toward each other, the worker's hands will not be injured at all, and since the locking piece 10 is also made of synthetic resin, the locking piece 10 can be used in the same way. Damage to the worker's hands is avoided. Furthermore, both sides of the rail 11 are less likely to be damaged.

Furthermore, since the side edge engaging portions 11d of the rail 11 are located at the farthest points from the top surface portion 11b of the rail 11, when the rail 11 is attached or detached, the distance between the side edge engaging portions 11d is adjusted to one side. Both side edge engaging parts 11
The angle of inclination of the rising parallel portions 11c when deformed so that they are moved together by the width d is small, and the rails can be easily attached and detached.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a fluidized shelf equipped with an embodiment of the horizontal rail according to the present invention, FIG. 2 is a perspective view of the main part of the horizontal rail with a through hole in the same embodiment, and FIG. 3 is a perspective view of the same horizontal rail. FIG. 4 is a perspective view of the main part of the locking piece used in this embodiment with a roller rail installed, and FIG. 6 is an enlarged perspective view of the main part of a conventional fluidized shelf, and FIG. 7 is a cross-sectional side view of the roller rail.
FIG. 2 is a cross-sectional side view of the roller rail taken along - in the figure. 1... Column frame, 2... Side frame, 3... Front and rear frames, 4...
...Brace, 5...Bolt nut, 6...Side arm,
7...Horizontal beam, 7a...Flat support part, 7b...Through hole, 8...Medium horizontal beam, 9...Shelf frame, 10...Locking piece, 11...Roller rail, 11a...Width center 11b...Top surface portion, 11c...Rising portion, 11d...Both side edge engaging portions, 11e...Rectangular hole, 11f...Support hole, 11g...Reinforcement piece, 12
...Roller, 12a... Central shaft portion, 12b... Disk, 12c... Reinforcement piece, 12d... Rim, 13...
...Guide rail.

Claims (1)

[Scope of utility model registration request] On the side legs of the shelf frame that slopes diagonally downward from the loading side to the loading side of the floating shelf, there is a cross-section inverted U that extends at a predetermined interval in the width direction of the shelf frame and is oriented in the direction of inclination.
A character-shaped rail is constructed, and both side edges of the inverted U-shaped rail with the same cross section are bent outward to form an engaging part,
In a fluid shelf in which both side edge engaging portions at both ends in the longitudinal direction of the rail are elastically deformed and engaged with the locking claws of the side rails of the shelf frame, the flat support portions of the side rails that support both ends of the rail. A large number of through holes are formed at predetermined intervals in the longitudinal direction of the rail, and locking pieces made of a synthetic resin material that engage and lock the locking portions on both sides of the rail are provided in the through holes. It consists of a main body with a length that is an integral multiple of the interval, a projecting piece formed perpendicularly upward from both ends of the main body, and a locking claw that projects inward from the upper end of the projecting piece. The width of the engaging portion is equal to the width of the through hole, and the height is sufficient to engage the engaging portions of both side edges of the rail between the lower surface of the locking pawl and the upper surface of the flat support portion of the crossbar. A rail fixing structure for a horizontal rung of a fluid shelf, characterized in that the retaining claws protrude upward.