JP2001139298A - Power unit for fork lift truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with wiring to a mast to improve the field of view, to supply power free of maintenance and to facilitate mounting to an existing vehicle. SOLUTION: A laser pointer 21 for irradiating laser beams is disposed at the front face lower part of a back rest 20 of a lift bracket 14. A power supply part 22 with a solar battery as an electric power supply source is disposed at the upper part back face of the back rest 20. The laser pointer 21 and the power supply part 22 are wired by a cable. Part of a light receiving face of the solar battery of the power supply part 22 is disposed to receive light from headlights 16 and a working lamp 17. Light is normally received from the sunlight and indoor illuminating lamps. When the quantity of sunlight diminishes, light is received from the headlights 16 and working lamp 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply for a forklift used for powering an accessory.

[0002]

2. Description of the Related Art Conventionally, there has been provided a laser pointer which irradiates a forklift fork with a pallet fork insertion port by irradiating an end face of a pallet with a laser beam. Attached to. As a power supply source for this conventional laser pointer, a battery as a power source for the entire vehicle body or a separate dry cell is used,
By receiving electric power from these, the laser beam is irradiated and the position of the pallet is detected.

[0003] Further, since the laser pointer is attached to the lift bracket, when the battery is a power supply source, electric power is supplied to the laser pointer by masting and wiring an electric wire.

[0004]

When a power supply source is a battery, an electric wire is masted. However, since this electric wire is located in front of a driver's seat, there is a problem that visibility is deteriorated. In addition, when retrofitting a laser pointer to an already delivered vehicle, it takes a lot of trouble such as masting and wiring the electric wires. Further, when the power supply source is a dry battery, it is necessary to replace the dry battery every two to four weeks, which requires a lot of time and effort for maintenance and has a problem that running costs are not ridiculous.

[0005] The present invention has been made in view of the above points, and has improved visibility by eliminating the need for mast-attached wiring.
Another object of the present invention is to provide a power supply device for a forklift capable of supplying power without maintenance and facilitating attachment to a delivered vehicle.

[0006]

SUMMARY OF THE INVENTION Accordingly, a power supply device for a forklift according to a first aspect of the present invention includes a forklift having a lift bracket mounted on a mast erected on a vehicle body so as to be able to move up and down. It is characterized in that a solar cell is arranged on a bracket.

[0007] With such a configuration, since it is a solar cell,
There is no need to replace or charge the battery, and power can be supplied without maintenance. Furthermore, by arranging the solar cell on the lift bracket of a forklift, a device that receives power supply to the lift bracket, for example, when a laser pointer is arranged, the laser pointer and the solar cell cooperate with the lift bracket. There is no need to wire the mast like
Therefore, it is possible to drive safely without obstructing the view from the driver's seat. In addition, since there is no need to wire the mast, it is easy to retrofit to a delivered car, and the installation is also easy.

According to a second aspect of the present invention, there is provided a power supply device for a forklift, wherein a solar cell is arranged so as to be able to receive light of an illumination lamp provided on the forklift.

With this arrangement, the solar cells are arranged so as to be able to receive the light of the illuminating lamp provided in the forklift. Therefore, even when the amount of solar radiation is small or the indoor lighting is dark, the solar light is used by the illuminating lamp. A battery can be generated, and power can be supplied to a device, for example, a laser pointer, which receives power supply by the electromotive force of the solar cell.

According to a third aspect of the present invention, in the power supply device for a forklift, the illumination light is a headlight or a work light.

[0011] With this configuration, the illumination lamp is a headlight or a work light. Therefore, even when the amount of solar radiation is small or the indoor light is dark, the solar battery is driven by the light of the headlight or the work light of the forklift. Can be generated, and power can be supplied to a device, for example, a laser pointer, which receives power supply by the electromotive force of the solar cell.

According to a fourth aspect of the present invention, there is provided a power supply device for a forklift, comprising a charging unit for charging an electromotive force from a solar cell.

With this configuration, since the charging unit for charging the electromotive force from the solar cell is provided, even if it is dark and the solar cell does not generate an electromotive force, a device that receives power supply from the charging unit, for example, a laser pointer Power can be supplied.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a reach type forklift 1, which has a body 2.
And a cargo handling device 3 provided in front of the vehicle body 2. A straddle leg 4 is provided on both sides of the vehicle body 2, a pair of front wheels 5 is provided at a front portion, and a rear wheel 6 is provided at a rear portion. A driver's seat 7 is provided at a rear portion of the vehicle body 2, and a head guard 11 for protecting the vehicle body 2 and an operator from falling objects such as commodities is disposed above the driver's seat 7. . A plurality of cargo handling levers 12 are provided on the operation panel of the driver's seat 7.

The cargo handling device 3 is disposed between the left and right straddle legs 4, and is driven by a reach cylinder (not shown) in the front-rear direction.
3 and a pair of left and right forks 15 attached to the front of the lift bracket 14 and tilted back and forth by a tilt cylinder (not shown). It is composed of A hydraulic cylinder such as a reach cylinder, a lift cylinder, and a tilt cylinder (not shown) is driven by one of the plurality of cargo handling levers 12 to move the mast 13 back and forth, the lift bracket 14 up and down, and the fork 15 back and forth. Each of them is driven to tilt.

Also, as shown in FIG.
Headlights 16 are installed at the inside corners on both sides of the front upper part of the head 1, and a work light 17 for illuminating a work part such as a pallet is installed below the head guard 11 depending on specifications. Has become.

A laser pointer 21 for irradiating the pallet with a laser beam is attached to a lower portion of the lift bracket 14 and is arranged close to the fork 15. The power supply unit 2 as a power supply source of the laser pointer 21
2 is a backrest 20 constituting the lift bracket 14
It is attached to the upper back of the. The power supply unit 22 and the laser pointer 21 are wired by a cable (not shown).

FIG. 2 is a block circuit diagram of a power supply unit 22 including the laser pointer 21. The power supply unit 22 includes a solar cell 23 that generates electromotive force by light,
3, a storage battery (secondary battery) 25 for storing charge, a backflow prevention diode 24 interposed between the solar battery 23 and the storage battery 25, a storage battery 25 and a laser pointer 2
1 and a switch 26 and a constant voltage circuit 27 interposed therebetween.
And so on. The storage battery 25 uses a lithium ion battery, a nickel cadmium battery, or a lead storage battery, but may use a capacitor capable of storing electric charge. The switch 26 is connected to the backrest 20.
The power supply unit 22 is mounted on the power supply unit 22. In this case, the wiring between the switch 26 and the laser pointer 21 can be omitted as compared with a case where the switch 26 is attached to another place. The switch 26 may be arranged near the driver's seat 7 so that the operator can turn on the laser pointer 21 when driving the laser pointer 21.

The solar cell 23 is formed on any one of the upper surface, the rear surface, both side surfaces, the front surface, or a plurality of arbitrary surfaces, or all surfaces except the lower surface of the casing of the power supply unit 22 disposed on the backrest 20. Many cells are arranged. These many cells generate power by receiving sunlight and light from indoor lighting, and supply power to the storage battery 25 or directly to the laser pointer 21. When both the amount of power storage and the amount of solar radiation in the storage battery 25 are small, the headlight 1
6 and the light from the work lamp 17 to respond. In particular, when the workplace is dark, the headlight 16
And the work light 17 are turned on, so that the headlight 16 and the work light 1
7 is received by a cell provided on the back surface of the power supply unit 22, whereby power can be supplied to the laser pointer 21. As the mounting angle of the cell, an optimal angle capable of receiving light to any of the sunlight, indoor lighting, headlight, and the like is selected. This allows
It is suitable for indoor and outdoor use, such as use of a laser pointer in the outdoors receiving sunlight and use of a laser pointer in a house receiving light from an illumination lamp.

The laser pointer 21 emits horizontal or vertical linear laser light or point-like laser light, and irradiates this laser light to the pallet to detect the position of the pallet. . FIG. 3 shows a front view of the pallet 31. The pallet 31 into which the fork 15 is inserted by irradiating a linear laser beam 32 from the laser pointer 21 to the beam 33 of the pallet 31 or the upper plate 34 and the lower plate 35. Can be easily detected.

The power supply section 22 includes a lift bracket 14
, It can be wired to the laser pointer 21 without masting as in the prior art, so that the driver can safely drive without obstructing the view from the driver's seat 7. it can. In addition, solar cell 2
3 and the power storage function of the storage battery 25, the power can be supplied to the laser pointer 21 without maintenance, and the running cost can be almost eliminated like the conventional dry battery. The running cost in this case is about replacement cost when the life of the solar battery 23 and the storage battery 25 is over. Furthermore, laser pointer 2
Even in the case of a delivered vehicle without the 1, since the laser pointer 21 and the power supply unit 22 are simply installed on the lift bracket 14 side without mast wiring, the retrofit to the delivered vehicle is possible, and the installation is easy. is there. Further, since the storage battery 25 is provided, the laser pointer 21 can be used even when there is no sunlight or light from the headlight 16 or the work light 17.

In the above embodiment, the case of the reach type forklift has been described. However, the present invention can be applied to other types of counterbalance type forklifts. In the above embodiment, the power supply unit 22
Although an example of the laser pointer 21 has been shown as a device that receives power supply from the device, other devices such as a sensor and an illumination lamp may be used.

[0023]

According to the power supply device for a forklift according to the first aspect of the present invention, since it is a solar battery, there is no need to replace or charge the battery, and power can be supplied without maintenance. Furthermore, by arranging the solar cell on the lift bracket of the forklift,
Similarly, when a device that receives power supply to the lift bracket, for example, a laser pointer is arranged, the laser pointer and the solar cell cooperate with the lift bracket, so there is no need to wire mast as in the past, so,
The driver can safely drive without obstructing the view from the driver's seat. In addition, since there is no need to wire the mast, it is easy to retrofit to a delivered car, and the installation is also easy.

According to the power supply device for a forklift according to the second aspect, the solar cells are arranged so as to be able to receive the light of the illuminating lamp provided on the forklift. Even in a dark case, the solar cell can generate power by the light of the illumination lamp, and power can be supplied to a device, such as a laser pointer, which receives power supply by the electromotive force of the solar cell.

According to the power supply device for a forklift according to the third aspect, since the illumination light is a headlight or a work light, the headlight of the forklift can be used even when the amount of solar radiation is small or when the indoor lighting is dark. A solar cell can be generated by light from a lamp or a work lamp, and power can be supplied to a device, for example, a laser pointer, which receives power supply by the electromotive force of the solar cell.

According to the power supply device for a forklift according to the fourth aspect, since the charging unit for charging the electromotive force from the solar cell is provided, even if the solar cell is dark and does not generate the electromotive force, the charging unit is not charged. Thus, power can be supplied to a device that receives power supply, for example, a laser pointer.

[Brief description of the drawings]

FIG. 1A is a side view of a forklift according to an embodiment of the present invention. (B) is a front view of the forklift according to the embodiment of the present invention.

FIG. 2 is a block circuit diagram of a power supply unit according to the embodiment of the present invention.

FIG. 3 is a front view of the pallet according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forklift 14 Lift bracket 15 Fork 16 Headlight 17 Work light 20 Backrest 21 Laser pointer 22 Power supply part 23 Solar cell 25 Storage battery

Claims (4)

[Claims] 1. A power supply device for a forklift, comprising: a forklift provided with a lift bracket attached to a mast erected on a vehicle body so as to be able to move up and down. 2. The power supply device for a forklift according to claim 1, wherein a solar cell is arranged so as to be able to receive light of an illumination lamp provided on the forklift. 3. The power supply device for a forklift according to claim 2, wherein the illumination light is a headlight or a work light. 4. The power supply device for a forklift according to claim 1, further comprising a charging unit that charges an electromotive force from a solar cell.