JP2707869B2 - Shelf with slide table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf provided with a slide table which can be moved back and forth between a protruding limit position and a retreat limit position.

[0002]

2. Description of the Related Art Conventionally, as this type of shelf with a slide table, there is one disclosed in Japanese Utility Model Laid-Open No. 2-107337, for example. That is, a slide table that is supported and guided by the guide rails of the shelf frame via guide rollers and that can move back and forth is provided, and the screw shaft along the direction of movement is rotated to one of the left and right sides of the shelf frame. A nut body that fits freely with the screw shaft is connected to the slide table, and a connection portion with an electric tool is formed at an end of the screw shaft.

When the power tool is connected to the screw portion and rotated forward and backward, the screw shaft rotates and the nut body moves along the screw shaft, whereby the slide table is guided by the guide rail. Get out and retreat.

[0004]

However, according to the above-mentioned conventional type, an electric tool is required to move the slide table back and forth. For this reason, in order to move the slide table at a high position from the floor surface back and forth, an operator must ride on a table or the like and operate the power tool, and the worker slides the slide table protrudingly. There is a danger of falling due to contact with the device or dropping of the power tool.

[0005] Further, in order to move the slide table at a low position near the floor surface back and forth, the operator has to crouch on the floor surface and operate the power tool, which is very difficult to operate.

Further, since the screw shaft is provided only on one of the left and right sides of the shelf frame, when the slide table is moved back and forth in a state where the load applied to the slide table is biased, the slide table is twisted. It did not work smoothly.

An object of the present invention is to provide a shelf with a slide table that allows the slide table to be safely, easily and smoothly retracted.

[0008]

According to the present invention, a pair of left and right guide rails are disposed on a shelf frame in the front-rear direction and supported by a plurality of guide rollers on these guide rails. A slide table to be guided is provided, and a drive roller rotatable in the front-rear direction on the guide rail and a motor interlocked with the drive roller are provided on both left and right sides of the slide table, and power is supplied to these motors. Providing a power supply device and a power collection device, wherein the power supply device
Is mounted inside the guide rail, and the current collector is
A detection device attached to the ride table for detecting a protruding limit position and a retreat limit position of the slide table; a control device for stopping driving of the electric motor by a detection signal from the detection device; An operation unit for instructing retreat is provided.

[0009]

With the above arrangement, when pulling out the slide table from the shelf, the pair of left and right electric motors are driven synchronously by operating the operation unit, and the drive roller rotates forward. Thereby, the target slide table is supported and guided by the guide rail via the guide roller, and protrudes forward of the shelf. When the slide table is pulled out to the protruding limit position, the detection device operates and a detection signal is sent to the control device, whereby the control device stops driving the two electric motors.

When inserting the slide table into the shelf,
By operating the operation unit, both motors are driven synchronously,
The drive roller rotates backward, and the slide table retreats to the shelf. When the slide table is inserted to the retreat limit position, a detection signal of the detection device is sent to the control device, and the control device stops driving of the two electric motors.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, reference numeral 1 denotes a shelf frame, which includes a pair of left and right front supports 2, a pair of left and right intermediate supports 3, a pair of right and left rear supports 4, and each of the supports 2, 3, 4. A lattice 5 connecting the front and rear, a brace 6 connecting the rear struts 4,
It is composed of a top plate frame 7 connecting the upper portions of the columns 3 and 4 and a lower support 8 connecting the lower portions.

A pair of left and right guide rails 10 are provided on the shelf frame 1.
Are arranged in a plurality of upper and lower stages. As shown in FIGS. 4 and 5, these guide rails 10 are channel-shaped, are arranged in the front-rear direction with their open portions facing each other, and correspond to the outer surfaces and the columns 2, 3, and 4. The mounting brackets 11, 12, and 13 are connected to the corresponding locations. Mounting is performed by applying brackets 11, 12, and 13 to the columns 2, 3, and 4, and then passing the connector pins 14 between them. On the upper surface of the lower plate part of both guide rails 10, rail material 15
Is laid. At the front and rear ends inside the guide rail 10,
For example, front and rear stopper plates 16,1 made of urethane rubber
7 are provided.

A slide table 18 located between the two guide rails 10 has guide rollers 19 on both sides of a rear portion supported and guided by rail members 15, and further has a vertical plate portion of the guide rail 10.
There are side guide rollers 20, 21 guided on the inner surface at both the rear side and the intermediate side.

A drive roller 23 supported and guided by the rail member 15 and rotatable in the front-rear direction, and a DC motor 24 for driving the drive roller 23 are provided on the left and right sides of an intermediate portion of the slide table 18, respectively. Have been. Each motor 24
It is mounted on the slide table 18 side via a mounting bracket 25, and is directly connected to the drive shaft 26 of the drive roller 23, respectively. 27 is a cover for covering the electric motor 24.

Each of the slide tables 18 and each of the guide rails 10 have magnetic proximity switches 28 and 29 as an example of a detecting device.
And a magnet 30 are attached. That is, a magnet is provided at one of the left and right ends of the rear end of the lower surface of the slide table 18.
30 is provided, and the guide rail 10 in the same direction as the magnet 30 is provided.
A pair of front and rear magnetic proximity switches 28 and 29 are provided on the lower surface of the. When the slide table 18 is pulled forward and reaches the projecting limit position, the front magnetic proximity switch 28
It is provided at a position facing 30. The rear magnetic proximity switch 29 is provided at a position facing the magnet 30 when the slide table 18 is inserted into the shelf frame 1 and reaches the retreat limit position.

A control device 32 is provided on the lower support 8, and stops the driving of the two electric motors 24 according to detection signals of the front and rear magnetic proximity switches 28 and 29. The above-mentioned front support 2
An operation unit 33 having operation buttons is provided in the middle part of the front surface on either one of the sides. By operating this operation unit 33, the target slide table 18 can be moved out and back.

As shown in FIGS. 6 to 9, a pair of insulated trolleys 36 as a power supply device 35 are provided on the inner surface of the vertical plate portion 34 of each of the left and right guide rails 10 on the hanger 37 and the end cap 38. It is supported and provided in the front-back direction. The insulation trolley 36 has a U-shaped insulation sheath 39.
(See FIG. 8) and a conductor 41 (see FIG. 8) fitted into the groove 40 of the insulating sheath 39.

The hanger 37 has a U-shape made of an insulating material, and the insulating trolley 36 is detachably fitted therein. At one end of each of the pair of horizontal plates 43 of the hanger 37, a bent portion 44 that is expanded outward is formed. One end of a boss portion 46 is fixed to the outer surface of a vertical plate 45 provided between the other end portions of the two horizontal plates 43.
Is fitted in a mounting hole 48 formed in the vertical plate portion 34 of the guide rail 10. Then, a washer 49 having a larger diameter than the mounting hole 48 is externally fitted to the mounting bolt 47, and these mounting bolts 47 are screwed into the boss portion 46, whereby the hanger 37 is attached to the inner surface of the vertical plate portion 34 of the guide rail 10. Fixed.

As shown in FIGS. 10 to 12, the end cap 38 is provided at the front end of the insulating trolley 36, and is made of an insulating material.
And consists of The trolley support part 51 is
It has a U-shape like 37, and the front end of the insulating trolley 36 is fitted into the trolley support 51.

In the brush guide 52 provided at one end of the end cap 38, guide grooves 53 communicating with the respective grooves 40 of the insulating trolley 36 fitted into the trolley support 51 are formed. The width of the guide grooves 53 increases toward one end of the end cap 38. As shown in FIG. 12, the bottom surface 54 of the guide groove 53 is inclined toward one end of the end cap 38, and the step H at the tip of the bottom surface 54 is set small. The end cap 38 is a brush guide
With the 52 facing forward, the mounting bolt 47 fitted with the washer 49 is screwed into the boss 46 in the same manner as the hanger 37.
The guide rail 10 is fixed to the inner surface of the vertical plate portion 34.

As shown in FIG. 6, an insulating trolley feed-in portion 55 is provided at the rear end of the insulating trolley 36, and lead wires are externally wired through crimp terminals (not shown).
56 is connected to the conductor 41 of the insulating trolley 36.

Current collectors 58 are provided on the left and right sides at the rear of the slide table 18. As shown in FIGS. 8 and 13, these current collectors 58 are provided in the grooves of the insulating trolley 36.
Two brushes 59 that are slidable in contact with the conductor 41 while being fitted in the 40, a support plate 60 that supports the brushes 59, respectively, and a connection shaft that connects the mounting bracket 66 and each support plate 60. It consists of 61. The support plate 60 has a U-shape, and a base end of a brush 59 is fitted into a concave portion 62 thereof. The brush 59 is rotatably connected to the support plate 60 via a vertical pin 63. A spring 64 is provided between the base end of the brush 59 and the concave portion 62 of the support plate 60 to absorb an impact when the brush 59 slides. A lateral connection shaft 61 is provided on one side surface of each support plate 60. On the slide table 18 side, a mounting bracket 66 is mounted via a bolt 65, and a U-shaped portion 67 is formed at an intermediate portion of the mounting bracket 66. The connection shaft 61 has a U-shaped portion.
67 is fitted inside so as to be able to move back and forth in the left-right direction. Support plate
A spring 68 externally fitted to the connecting shaft 61 is provided between the mounting bracket 66 and the mounting bracket 66, and the support plate 60 is urged toward the insulating trolley 36 by the spring 68. One end of a lead wire 56 is connected to one end of each brush 59,
The other end of the lead wire 56 is connected to the electric motor 24.

The operation of the above configuration will be described below.
From the state where all the slide tables 18 are inserted, 1
When pulling out the slide table 18 from the shelf, the operator operates the operation unit 33 to cause the pair of left and right electric motors to move.
24 is driven synchronously, and the drive roller 23 rotates forward in conjunction with the drive. Then, the target slide table 18 is supported and guided by the guide rail 10 via the guide roller 19 and the side guide rollers 20, 21 and protrudes forward of the shelf.

As shown by the imaginary line (a) in FIG. 14, when the slide table 18 is pulled out to the protruding limit position, the magnet 30
Reaches a position facing the front magnetic proximity switch 28, the front magnetic proximity switch 28 is turned on from off, and a detection signal is sent to the control device 32. Thereby, the control device 32
Automatically stops the driving of both motors 24, and the slide table 18 is moved by the front side guide rollers 20 to the front stopper plate 16
Stops at the protruding limit position by contact with At this time, the user operates the operation unit 33 to newly add another slide table 18.
By setting the control device 32 so that the two electric motors 24 do not drive even if the user tries to pull out the slide table 18, even if an erroneous operation is performed, the loading and unloading work of the article with respect to the slide table 18 already drawn out can be performed. It is possible to prevent an accident in which another slide table 18 newly protrudes and collides with a worker who is performing.

After loading and unloading the articles to and from the slide table 18 drawn out as described above, when the slide table 18 is to be inserted into the shelf, the operator operates the operation section 33 to operate the operation section 33. Then, both motors 24 are driven synchronously, and the drive roller 23 is rotated backward. Then, the slide table 18 retreats into the shelf frame 1.

As shown by the solid line (b) in FIG. 14, when the slide table 18 is inserted to the retreat limit position, the magnet 30 reaches the position facing the rear magnetic proximity switch 29, and the rear magnetic proximity switch 29 From the off state to the on state, a detection signal is sent to the control device 32. As a result, the control device 32 automatically stops the driving of both electric motors 24, and the slide table 18
Is stopped at the retreat limit position by the rear side guide roller 21 abutting the rear stopper plate 17.

As the slide table 18 moves back and forth, the brush 59 of the current collector 58 slides back and forth along the insulating trolley 36 in contact with the conductor 41 of the insulating trolley 36 of the power feeding device 35. Move. Thus, electric power can be supplied to the pair of left and right electric motors 24, and both electric motors 24 are reliably driven synchronously.

In the above embodiment, since the DC motor 24 is directly connected to the drive shaft 26 of the drive roller 23, the structure becomes simple and compact, and the number of parts can be reduced. further,
A commonly used three-phase induction motor requires three insulated trolleys, while the DC motor 24 is an insulated trolley.
Since only two 36 are required, the power supply device 35 can be made compact, and the power supply device 35 can be incorporated inside the guide rail 10. This allows the operator to mistakenly
There is no need to touch the 35 to prevent electric shock accidents, and furthermore, it does not impair the aesthetics of the entire shelf.

In the above-described embodiment, the outwardly extending bent portion 44 is formed at the distal end of the horizontal plate 43 of the hanger 37, so that the hanger 37 is attached to the guide rail 10 in advance during manufacture. Then, by press-fitting the insulating trolley 36, as shown by the phantom line in FIG. 8, the space between the two horizontal plates 43 is easily widened, and the insulating trolley 36 can be easily fitted into the hanger 37. For this reason, the position adjustment for aligning the hanger 37 with the position of the mounting hole 48 of the guide rail 10 becomes unnecessary.

In the above embodiment, the step H at the tip of the bottom surface 54 of the guide groove 53 of the end cap 38 is set small, so that when the slide table 18 is inserted into the guide rail 10 from outside during manufacture, FIG. Virtual lines (c), (d),
As shown in (e), the brush 59 of the current collector 58 does not catch on the front end of the end cap 38, but slides smoothly on the bottom surface 54 of the guide groove 53 and is guided by the insulating trolley 36.

[0031]

As described above, according to the present invention, electric motors and drive rollers are provided on both left and right sides of the slide table, and the slide table which can freely move is automatically moved between the protruding limit position and the retreat limit position. By providing a control device to stop,
A conventional power tool is not required to move the slide table back and forth, and by operating the operation unit, the slide table at a high position or a low position can be easily moved back and forth regardless of the mounting height of the slide table. be able to.

Therefore, the worker does not operate the electric tool by standing on the table or crouching on the floor as in the prior art, so that the worker comes into contact with the protruding slide table and falls. There is no danger of dropping the power tool or the power tool, and the work can be performed safely and easily.

Also, since the left and right motors are driven synchronously to move the slide table back and forth, the slide table is not twisted even when a biased load is applied to the slide table and is always smooth. Activate In addition, the power supply is mounted inside the guide rail
Power supply device is not exposed to the outside,
Can be prevented from contacting the power supply device, and safety is improved.
You. Effective use of space inside guide rails
can do.

[Brief description of the drawings]

FIG. 1 is a plan view of a shelf with a slide table according to an embodiment of the present invention.

FIG. 2 is a front view of the shelf with a slide table.

FIG. 3 is a side view of the shelf with the slide table.

FIG. 4 is an enlarged plan view of a main part in FIG.

FIG. 5 is a view taken in the direction of arrows AA in FIG. 4;

FIG. 6 is a side view of the power supply device of the embodiment.

FIG. 7 is a plan view of the power supply device.

FIG. 8 is an enlarged front view of the power supply device and the current collector of the embodiment.

FIG. 9 is a plan view of a hanger of the power supply device.

FIG. 10 is a front view of an end cap of the power supply device.

FIG. 11 is a side view of the end cap.

FIG. 12 is a plan view of the end cap.

FIG. 13 is a plan view of the current collector of the embodiment.

FIG. 14 is a schematic side view showing the reciprocating movement of the slide table of the embodiment.

[Explanation of symbols]

 1 Shelf frame 10 Guide rail 18 Slide table 19 Guide roller 20,21 Side guide roller 23 Drive roller 24 Electric motor 28,29 Magnetic proximity switch (detection device) 30 Magnet (detection device) 32 Control device 33 Operation unit 35 Power supply device 58 Electrical equipment

Claims (1)

(57) [Claims] 1. A pair of left and right guide rails are disposed on a shelf frame in a front-rear direction, and a slide table supported and guided by a plurality of guide rollers is provided on these guide rails.
A drive roller rotatable in the front-rear direction on the guide rail and a motor interlocked with the drive roller are provided on both left and right sides of the slide table, respectively. A power supply device and a current collector for supplying power to the motor are provided. The power supply
Is mounted inside the guide rail, and the current collector is
A detection device attached to the slide table for detecting a protruding limit position and a retreat limit position of the slide table; a control device for stopping driving of the electric motor by a detection signal from the detection device; A shelf with a slide table, comprising an operation unit for instructing retreat.