JP3492211B2 - Moving shelf - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable shelf that can store and move books and other articles.

[0002]

2. Description of the Related Art A movable rack has a plurality of movable racks arranged on a guide rail so that a movable passage is formed only between the racks required for loading and unloading articles and the adjacent racks. However, by converging the other shelves, the limited space can be effectively used as an article storage space.

The movable rack can be roughly classified into an electric movable rack and a manual movable rack depending on its drive system. In the case of an electric type mobile rack, it is necessary to electrically connect adjacent racks in order to supply power between the mobile racks and exchange control signals. Also in the case of a manual type moving rack, for example, a solenoid or other electric actuator is used to lock or unlock the moving rack immovably, and further, a detection signal of the seismic sensing device is used. In some cases, the actuator is actuated to release the lock. Therefore, adjacent shelves may be electrically connected to each other. As a method of connecting such movable shelves to each other, a connection method using a cable arm has been conventionally known. FIG. 7 is a top view of a moving shelf to which this method is applied. The movable shelves 40, 41, 42, 43 are arranged on the rail 11 in a direction perpendicular to the rail 11, and wheels (not shown) travel on the rail 11. FIG. 7 shows a state in which a passage is formed between the movable rack 40 and the movable rack 41.

The following cable arms are provided on the upper surface of each movable rack. One end of the cable arm 45 is rotatably provided on the moving shelf 41 side of the moving shelf 40 in the horizontal plane, and one end of the cable arm 46 is rotatable on the moving shelf 40 side of the moving shelf 41 in the horizontal plane. The distal ends of the cable arm 45 and the cable arm 46 are joined by a hinge 52. Mobile shelf 41
And the movable rack 42, the cable arms 45, 46 are also provided.
A cable arm 4748 similar to the above is provided, and the tip ends of the cable arms 47 and 48 are joined by a hinge 53. Similarly, cable arms 49 and 50 are provided between the moving rack 42 and the moving rack 43, and the cable arms 4 and
The tips of the reference numerals 9 and 50 are joined by a hinge 54.

These cable arms are for accommodating the cables passed to the adjacent movable shelves, and the cable arms between the movable shelves are expanded as the working passage formed between the adjacent movable shelves expands. The angle formed by the cable arms between the movable shelves narrows as the working path narrows. A flexible cable is used so as to cope with a change in angle formed by the cable arm.

[0006] As shown in FIG. 7, the electrical connection method of passing a cable through a cable arm joined by a hinge requires less equipment and is inexpensive, and is commonly used in mobile shelves. Although it is a method, since the length of the cable arm is fixed in advance, it is necessary to extend the cable arm if it is necessary to change the width of the passage formed between the moving shelves (especially when it is desired to be wide). There was a problem that it was necessary to add equipment.
Further, since the adjacent movable shelves are joined by the cable arm, there is a problem that the movable shelves may be cascading and fall due to a quake during an earthquake.

Further, as another example of the method of supplying power to the movable rack, a method of supplying power by a trolley duct has been conventionally known. This method is a method in which a trolley duct is provided along the moving path of the moving shelf and power is supplied to the moving shelf through the trolley duct. This trolley duct power feeding system has an advantage that it can be used for both power feeding and signal exchange, and it is often used for automatic warehouse article shelves, but on the other hand, it has the drawback of being expensive and not easy to handle. there were.

[0008]

SUMMARY OF THE INVENTION The present invention was conceived based on the above-mentioned background. It does not have the drawbacks of the prior art, is relatively inexpensive, and is a mobile rack that is strong against earthquakes. The purpose is to provide.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is provided with an underframe, traveling wheels rotatably attached to this underframe, and the traveling frame. A movable rack having a rack and a cable for electrically connecting the adjacent racks to each other, a cable mounting portion on a surface opposite to a surface opposite to each other on an underframe of the mobile rack adjacent to each other. Is provided, and both ends of the cables between the adjacent movable shelves are attached to the cable attachment portions on the opposite sides of the surfaces of the adjacent shelves opposite to each other, and are wired in a staggered manner. To do.

The invention according to a second aspect is characterized in that, in the movable shelf according to the first aspect, the cable attachment portion has a surface perpendicular to a moving direction of the movable shelf.

The invention according to claim 3 is the moving rack according to claim 1 or 2, wherein the cable is a spring cable.
The spring cable is arranged in a duct provided on the floor, and the cable attachment portion is also located in the duct.

According to a fourth aspect of the present invention, in the movable rack according to the third aspect, a guide with which the spring cable contacts is provided in the duct.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a movable shelf according to the present invention will be described below with reference to the drawings. In addition,
The mobile shelf according to the present invention is a mobile shelf having a spring cable, but the cable is used not only for supplying electric power but also for transmitting a control signal. Therefore, the movable shelf according to the present invention is not limited to the electric type, and may be a manual type or a hydraulic type. Below, it demonstrates as an example of an electrically-driven moving shelf.

FIG. 1 shows an example of the structure of the underframe portion of the bottom of the movable shelf that can be used in the present invention. In FIG. 1, the movable shelf 100 has an underframe 1 formed by bending an iron plate or the like at the bottom, and an appropriate number of beam members 5 are laid in the underframe 1 to reinforce it. Is
High rigidity is maintained. An appropriate beam member 5 forms a pair, and the traveling wheel 3 or the traveling wheel 4 is rotatably supported via a bearing 6 between the paired beam members 5 and 5. The traveling wheels 3 with flanges are arranged on both sides in the left-right direction when viewed from the traveling direction of the movable rack 100 (vertical direction in FIG. 1) and before and after the traveling direction. The traveling wheel 4 without a flange is arranged at the center of the movable shelf 100 when viewed from the traveling direction and before and after the traveling direction.

Since the small-diameter gear 8 fixed to the output shaft of the motor 30 meshes with the large-diameter gear 9 fixed to the connecting shaft 32, which is a shaft integral with the traveling wheels 3, 4, 3, the motor 30 Of the traveling wheels 3, 4, 3 is transmitted to the connecting shaft 32 via the gears 8 and 9 that form the reduction gear train.
Is driven to rotate. That is, the rotating force of the motor 30 is transmitted to the connecting shaft 32, and the rotating force of the connecting shaft 32 is transferred to the wheels 3,
The movable rack 100 is transmitted to the rails 4, 3 and is driven by the wheels 3, 4, 3 to move along the rails.

The motor 30 may be a geared motor incorporating a reduction gear train. In that case, the motor 30
The output shaft of 1 may be directly connected to the connecting shaft 32. The motor 30 may also be a type of motor having an output shaft in a direction orthogonal to the rotation axis of the motor itself.
In addition, the type of the motor 30 is not particularly limited, and one suitable for the required specifications may be appropriately selected and used. For example, you may select from an induction motor, a reversible motor, an inverter control or a chopper control motor, a servo motor, etc. Further, it may be of a type in which the traveling wheels 3, 4, 3 and the motor 30 are fused, that is, a type in which the traveling wheels 3, 4, 3 constitute a rotor of the motor.

FIG. 2 shows an example of a mobile rack in which a plurality of mobile racks 100 configured as shown in FIG. 1 are installed. In this embodiment, the shelves 12, 13, 14, and 15 are all movable shelves. In FIG. 2, three guide rails 10 are laid in parallel and linearly on the floor of a building, warehouse or other structure. The number and size of the guide rails are appropriately changed depending on the type of moving rack and the number of wheels. On each rail 10, the traveling wheels 3, 4, 3 of the movable shelves 12, 13, 14, 15 similar to those described in FIG. 1 are mounted. Mobile shelves 12, 1
3, 14, 15 are linear along the rail 10, and
It is possible to move in a direction orthogonal to the putting-in / taking-out surface of the stored article.

In this embodiment, all the shelves are movable shelves, but it is not necessary that all shelves be movable shelves, and the outermost shelves may be fixed shelves. Good. In addition, the end stopper 2 is provided at the end of the rail 10.
2 is provided, but a partition or the like may be provided at the end of the rail 10 instead of an end stopper.

When articles are taken in and out of the movable rack, an appropriate movable rack is moved in the left-right direction in FIG. 2 to form a working passage on the front surface of the desired movable rack. FIG. 2 shows an example in which a passage is formed between the movable shelves 12 and 13.

FIG. 3 shows a schematic diagram in which a spring cable is connected between the movable shelves. A cable attachment portion is provided in the lower portion of the underframe on the side opposite to the facing surface of the underframes of the movable shelves adjacent to each other. That is, between the moving rack 12 and the moving rack 13, cable mounting portions 16b and 16c are mounted on the surface of the underframe opposite to the surfaces facing each other, and the spring cable 19b is passed between them. Between the moving shelves 13 and the moving shelves 14, the cable mounting portions 16d and 16e are mounted on the surfaces of the underframes opposite to each other.
The spring cable 19c is passed in the meantime. Also between the moving rack 13 and the moving rack 14, cable attachment portions 16f and 16g are attached on the opposite surface sides of the underframes, which face each other, and a spring cable 19d is passed between them. The spring cable 19a is passed from the mounting portion 16a of the moving shelf 12 at the right end to the external terminal, and the spring cable 19e is passed to the external terminal from the mounting portion 16h of the moving shelf 15 at the left end. Although not shown in FIG. 3, each spring cable is arranged in a duct provided on the floor.

As described above, according to the present invention, the cable attachment portion is provided on the side of the underframes of the moving shelves adjacent to each other opposite to the facing surface, and the spring cables are staggered between the plurality of moving shelves. ing. Normally, the cables between the adjacent movable shelves are connected to each other by opposing cables so that the length thereof is the shortest. However, when the cable is passed between the facing surfaces of the moving shelves facing each other in this way, a passage is formed between the moving shelves, and the elongation rate when the spring cable is extended to the maximum becomes very large. Therefore, it is necessary to use an expensive spring cable having a high elongation ratio to withstand this, or an expensive cable having a large diameter. On the other hand, according to the above-described embodiment of the present invention, since the spring cables are staggered between the plurality of movable shelves, passages are formed between the movable shelves and the spring cables are extended to the maximum extent. Even if
Since the natural length of the spring cable is originally long, the elongation rate of the spring cable is small, and it is possible to use a spring cable with a small spring diameter, and there is an advantage that the duct can be small corresponding to the spring cable. .

Next, an example of the cable mounting portion is shown in FIG. The cable attachment portion 16 is attached to the underside of the underframe 1 of the movable shelf, and one end of the spring cable is attached to the cable attachment portion and passed between the adjacent movable shelves. The cable mounting portion 16 is a rod-shaped portion 17.
The rod-shaped portion 17 is joined to the lower side of the underframe 1 by a welding, for example, to a mounting plate 24 that can be screwed. The planar portion 18 is attached to the lower end of the rod portion 17 by welding, for example, so that the surface thereof is perpendicular to the moving direction of the movable shelf.

Coil end 20 of spring cable 19
Is fixed to the surface of the planar portion 18 that is not welded to the rod-shaped portion 17 with a tape, an adhesive, or other appropriate fixing means.

FIG. 4 shows an example of the spring cable.
FIG. 4A is a cross-sectional view of the cable, in which the five local wires 29 on the inside are covered by the tube 30 on the outside to form one cable. FIG. 4B is a side view of the spring coil. A linear cable portion 21 is formed on both sides of the spring coil, and a central portion thereof is a coil portion 23 wound in a coil shape.
The coil portion 23 is expandable and contractible in the left-right direction in the drawing.

The planar portion 18 is the spring cable 1
The shape may be circular or polygonal as long as it has a shape sufficient to support 9, but it is desirable that the shape has an outer diameter similar to the outer diameter of the coil portion 23 of the spring cable 19.

FIG. 6 shows a sectional view of the underframe portion. On the lower side of the underframe 1, two cable mounting portions 16a,
16b is provided. Although the front-rear relationship of the two cable mounting portions 16a and 16b is not understood in FIG. 6, the cable mounting portion 16a is the back side and the cable mounting portion 16b is the front side when viewed from the front side of the movable shelf, that is, the front side of the paper surface in FIG. It is provided in.

Two ducts 25a and 25b are provided on the floor in parallel with the moving direction of the movable rack. Duct 25a
Is a stepped iron plate 26 in the hole provided on the floor along the rail.
It is formed by combining and fitting a, L-shaped iron plate 27a and U-shaped iron plate 28a. Duct 25b
Also has a stepped iron plate 26 in the hole provided on the floor along the rail.
b, L-shaped iron plate 27b, and U-shaped iron plate 28b are combined and fitted.

The cable mounting portion 16 is provided in the duct 25a.
The planar portion 18a of "a" and the spring cable 19a are housed therein, and a space is created in which these can be moved within the duct 25a in accordance with the movement of the movable rack. Cable mounting part 16
The upper center of the duct 25a is open so that the rod-shaped portion 17a of a can move along the duct 25a, and a slit in the moving direction of the movable shelf is formed. The same applies to the duct 25b.

As described above, when the spring cable is housed in the duct, compared with the case where the cable is exposed, it is not caught on the cable, the safety is improved, and the life of the cable itself is extended. it can.

Further, since the spring cable 19 has slack, the contact resistance with the inner surface of the duct 25 increases the driving force required to move the movable rack, and the spring cable 19 may wear. Therefore, for example, a resin guide may be provided on the inner surface of the duct 25 to smooth the contact surface, reduce the friction coefficient, and prevent an increase in driving force and wear of the spring cable 19. The material of the guide is not particularly limited to resin, and any material that is slippery may be used.

[0031]

According to the invention of claim 1, an underframe,
Moving movable shelves having traveling wheels rotatably attached to the underframe, shelves provided on the underframe, and cables electrically connecting adjacent shelves to each other On the underframe of the shelf, a cable attachment portion is provided on the side opposite to the surface facing each other, and both ends of the cable connecting the adjacent moving shelves are different from the surfaces facing each other of the adjacent shelves. Since it is attached to the above-mentioned cable attachment part on the opposite surface side and wired in a zigzag manner, the natural length of the spring cable itself can be increased, and the expansion rate of the cable due to movement of the moving shelf can be suppressed, equipment It is possible to obtain the effect that the cost is relatively low and the handling is easy. Moreover, since the cables do not tend to pull or pull against each other due to the vibration during an earthquake, there is almost no possibility of the mobile rack tipping over unlike the conventional one in which the mobile racks are connected by a cable arm. There is also.

According to the second aspect of the present invention, in the movable rack according to the first aspect, the cable mounting portion has a surface perpendicular to the moving direction of the movable rack, so that the spring cable can be securely mounted. Since the cable can be reliably pushed with the same force, the spring cable can be stably held.

According to the invention described in claim 3, in the movable shelf according to claim 1 or 2, the cable is a spring cable.
The spring cable, which is made up of a bull and is arranged in a duct provided on the floor, is safe because an operator is not caught by the spring cable, so that the life of the cable itself can be extended.

According to the invention described in claim 4, in the movable shelf according to claim 3, since a guide for contacting the spring cable is provided in the duct, the contact resistance between the spring cable and the duct is reduced. It is possible,
While preventing an increase in the driving force of the moving rack, it is possible to prevent wear of the spring cable.

[Brief description of drawings]

FIG. 1 is a bottom view showing an example of a movable shelf to which the present invention can be applied.

FIG. 2 is a plan view showing an example of a movable shelf to which the present invention can be applied.

FIG. 3 is a plan view showing an embodiment of a movable rack according to the present invention.

FIG. 4 (a) is a cross-sectional view showing an example of a spring cable that can be used in the movable shelf according to the present invention.
(B) is a side view.

FIG. 5A is a front view and FIG. 5B is a side view showing an example of a cable attachment portion that can be used in the movable shelf according to the present invention.

FIG. 6 is a cross-sectional view showing an example of an underframe and a cable duct applicable to the present invention.

FIG. 7 is a plan view showing an example of a movable rack that has been conventionally used.

[Explanation of symbols]

1 frame 3 running wheels 4 running wheels 16 Cable mounting part 25 ducts 100 moving shelves

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuhiro Higashi 3-8-1, Kamiakumamoto, Kumamoto-shi, Kumamoto Within Kongo Corporation (72) Inventor Kazuya Tokunaga 3-8-1 Kamiakumamoto, Kumamoto-shi, Kumamoto In Kongo Co., Ltd. (72) Inventor Toshihiro Higashi 3-8-1, Kamiakumamoto, Kumamoto-shi, Kumamoto In Kongo Corporation (72) Inventor Kanji Kashiwagi 3-8-1 Kamikaumamoto, Kumamoto-shi, Kumamoto Incorporated (56) References Kaikaihei 3-70017 (JP, U) Kaikaihei 3-53135 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47B 53/00 -53/02

Claims (4)

(57) [Claims] 1. A vehicle having a frame, a traveling wheel rotatably attached to the frame, a shelf portion provided on the frame, and a cable electrically connecting adjacent shelves to each other. In such a mobile shelf, cable mounts are provided on the underframes of the mobile shelves adjacent to each other on the side opposite to the surface facing each other, and both ends of the cable connecting the mobile shelves adjacent to each other are adjacent to each other. A movable shelf, which is attached to the above-mentioned cable attachment portion on the side opposite to the opposite sides of the shelves and is wired in a staggered manner. 2. The moving rack according to claim 1, wherein the cable attachment portion has a surface perpendicular to a moving direction of the moving rack. 3. The cable is a spring cable.
The movable shelf according to claim 1 or 2 , wherein the spring cable is arranged in a duct provided on the floor, and the cable attachment portion is also located in the duct. 4. The movable shelf according to claim 3, wherein a guide with which a spring cable contacts is provided in the duct.