JP2002348098A - Lift truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lift truck excellent in operability. SOLUTION: In this lift truck provided, in a body, with an elevatable lifter and an operation part 5 having a normally and reversely rotatable grip 10 for advancing and retreating the body and having an operation box 11 fixed to a root part of the grip 10, and provided with plural operation buttoms 17-19 in an operation face 11a of the operation box 11, a facing angle α between the axial center O1 of the grip 10 and the axial center O2 of each of the operation buttom 17-19 is set to an acute angle by inclining the operation face 11a to a grip 10 side by a prescribed angle β.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift truck excellent in operability such as an order picking lift.

[0002]

2. Description of the Related Art FIG. 7 shows an example of an order picking lift. The lifter 2 is disposed on a vehicle body 1 so as to be able to move up and down, and the lifter 2 is provided with a fork 3, a picking worktable 4, and an operation unit 5, and an emergency stop switch 6, a headlight, A switch 7, a key switch 8, and the like are arranged. A steering handle 9 is rotatably arranged on the front left side of the operation section 5. The grip 10 is disposed so as to be rotatable forward and backward about the axis of the grip 10. An operation box 11 is fixed to the base of the grip 10, and the grip 10 and the operation box 11 rotate integrally. In addition, 1
Reference numeral 2 denotes a brake pedal, 13 denotes a protective guard that can be turned up and down, 14 denotes a lift cylinder for lifting and lowering the lifter 2, and 15 denotes a cable.

Conventionally, as shown in FIGS. 8 and 9, the operation box 11 has a box body 11A integrally connected to a grip 10, and a substantially U-shaped cover plate screwed into an opening of the box body 11A. 11B, and its cover plate 1
A plurality of operation buttons 17 and 18 for raising and lowering the lifter 2 and an alarm operation button 19 are provided on the flat operation surface 11a of 1B. In FIG. 9, reference numeral 21 denotes a box body 11A facing a stopper 22 protruding from the inner surface of the recess 5a.
Is a rotation-preventing projection protruding from the side surface of the main body.

In the above configuration, an operator rides on the picking worktable 4, grips the grip 10 with the right hand, and rotates the grip 10 forward or backward b from the neutral position, so that the grip 10 is proportional to the rotation angle of the grip 10. The vehicle body 1 is moved forward or backward at a speed that is controlled, and the steering handle 9 is operated forward and reverse with the left hand.
8, the lifter 2 is raised by pressing the front operation button 17 with the thumb of the right hand gripping the grip 10, and the lifter 2 is lowered by pressing the rear operation button 18, as shown in FIG. Then, a pallet operation or a picking operation is performed by pressing an alarm operation button 19 to generate an alarm.

[0005]

In the above-mentioned conventional configuration,
As shown in FIG. 9C, the opposing angle α between the axis O1 of the grip 10 and the axis O2 of each of the operation buttons 17 to 19 is set to be a right angle, and the upper surface of each of the operation buttons 17 to 19 is gripped. 1
0 is formed in parallel with the outer peripheral surface of the grip 10 and the two are relatively separated from each other. By loosening the grip and moving the right hand to the left, it is necessary to extend the thumb above each of the operation buttons 17 to 19, and the operation is troublesome, and it is disadvantageous especially for an operator with a small hand. There is a drawback that the property is low.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a lift truck excellent in operability.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a rod-shaped grip is provided on an operating portion, and an operating means capable of operating a thumb close to the grip is provided. The operating means is characterized in that the projecting direction of the operating means is inclined toward the grip.

According to the above construction, since the projecting direction of the operating means is inclined to the grip side, the operating means can be easily operated with the thumb without loosening the grip of the grip, and the operability is excellent. And is particularly suitable for operators with small hands.

According to a second aspect of the present invention, in the first aspect of the present invention, the grip and the operating means are integrally rotatable.

According to the above configuration, both the operation of rotating the grip and the operation of the thumb of the operation means can be performed smoothly.

According to a third aspect of the present invention, in the second aspect of the present invention, the rotation of the grip and the operating means is an accelerator operation.

According to the above configuration, the lift truck can be moved back and forth at a desired speed by rotating the grip.

According to a fourth aspect of the present invention, in the second aspect of the invention, the rotation of the grip and the operating means is a lift operation.

According to the above construction, the lifter of the lift truck can be raised and lowered smoothly by rotating the grip.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the operation means comprises an operation button, and an opposing angle between the axis of the operation button and the axis of the grip. Is set to an acute angle.

According to the above arrangement, the opposing angle between the axis of the grip and the axis of the operation button is set to an acute angle, and the upper surface of the operation button is inclined toward the outer peripheral surface of the grip so that both of them are inclined. Since they are relatively close to each other, the operation buttons can be easily operated with the thumb without substantially loosening the grip, and are excellent in operability, and are particularly suitable for operators with small hands.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the operation surface is formed along an imaginary circle centered on an axis perpendicular to the axis of the grip at a substantially central portion of the grip. A plurality of the operation buttons are arranged in an arc at a predetermined angle.

According to the above configuration, the thumb is moved in an arc around the axis perpendicular to the axis of the grip while the grip is held, so that each operation button is reliably pressed by the thumb. be able to.

The invention according to claim 7 is the invention according to claim 5 or 6.
In the invention described above, a plurality of the operation buttons are arranged in an arc shape at predetermined angles on an operation surface along a virtual circle drawn around the axis of the grip.

According to the above configuration, by moving the thumb in an arc shape around the axis of the grip while gripping the grip, it is possible to more reliably press the operation buttons with the thumb.

[0021]

1 and 2 show a main part of an order picking lift according to a first embodiment of the present invention, in which an operation surface 11a is set at a predetermined angle β (in this embodiment, 30 °), the opposite angle α between the axis O1 of the grip 10 and the axis O2 of each of the operation buttons (operating means) 17 to 19 becomes an acute angle (60 ° in this embodiment). ) Is set to Since the configuration other than the above is substantially the same as the configuration shown in FIGS. 7 to 9, the same portions are denoted by the same reference numerals and description thereof will be omitted.

When performing a pallet operation or a picking operation, an operator rides on the picking work table 4, holds the grip 10 with the right hand, and rotates the grip 10 forward or backward b from the neutral position. The traveling direction of the vehicle body 1 is changed by moving the vehicle body 1 forward or backward at a speed proportional to the rotation angle of the grip 10 and operating the steering handle 9 forward or reverse with the left hand (see FIG. 7). As shown in FIG. 1, the lifter 2 is raised by pressing the front operation button 17 with the thumb of the right hand gripping the grip 10, the lifter 2 is pressed by pressing the rear operation button 18, and the alarm operation button 19 is pressed by pressing the alarm operation button 19. Perform operations such as issuing

According to the above configuration, the axis O of the grip 10 is
1 is set at an acute angle with the axis O2 of each of the operation buttons 17 to 19, and the upper surface of each of the operation buttons 17 to 19 is inclined toward the outer peripheral surface of the grip 10 so that the two can be compared. And the operation box 11 provided with the operation buttons 17 to 19 is rotated integrally with the grip 10, so that the operation buttons 17 to 19 are pressed from the state in which the grip 10 is rotated forward and reverse. When operating, each of the operation buttons 17 to 1 is pressed with the thumb without substantially loosening the grip of the grip 10.
9 can be easily operated and has excellent operability.
Particularly suitable for operators with small hands.

It is preferable that the facing angle α is set in a range of 45 ° to 75 °. Here, if the angle is less than 45 °, the inclination angle of the upper surface of each of the operation buttons 17 to 19 may be too large to make the operation difficult. There are times when it becomes almost the same and operation becomes difficult.

FIGS. 3 and 4 show a main part of an order picking lift according to a second embodiment of the present invention. As shown in FIG. h, the axis O of the grip 10 substantially at the center.
Each operation button is provided at a predetermined angle t (about 22 ° in this embodiment) on the inclined flat operation surface 11a along an imaginary circle O4 drawn with a predetermined radius r around an axis O3 orthogonal to 1. 17 to 19 are arranged in an arc shape. Since the configuration other than the above is substantially the same as the configuration shown in FIGS. 1 and 2, the same portions are denoted by the same reference numerals and description thereof will be omitted.

According to the above configuration, in addition to the effect of the first embodiment, in a state where the grip 10 is gripped, the thumb is moved in an arc around the axis O3 perpendicular to the axis O1 of the grip 10. By moving, each thumbwheel 17-1
9 can be reliably pressed.

FIGS. 5 and 6 show a main part of an order picking lift according to a third embodiment of the present invention. The operation surface 11a is formed in an arc shape substantially along the outer peripheral surface of the grip 10. Then, as shown in FIG. 6A, a predetermined distance f is set on the inclined arc-shaped operation surface 11a along an imaginary circle O5 drawn with a predetermined radius d around the axis O1 of the grip 10.
Each of the operation buttons 17 to 17 (approximately 35 ° in this embodiment)
19 are arranged in an arc shape. The configuration other than the above is shown in FIG.
4 are almost the same as those shown in FIG.

According to the above configuration, in addition to the effects of the first and second embodiments, by moving the thumb in an arc shape about the axis O1 of the grip 10 while holding the grip 10, Each of the operation buttons 17 to 19 can be more reliably pressed by the thumb.

In the above embodiment, the case where the operation buttons (operation means) 17 to 19 are used as the operation means has been described as an example. However, the present invention is not limited to this. For example, an operation lever or various switches may be used. It can also be applied when used.

Although the accelerator operation is performed by the rotation of the grip 10, the invention is not limited to this. The lift operation of raising and lowering the lifter 2 by the rotation of the grip 10 may be performed.

Furthermore, the order picking lift has been described as an example, but the present invention is not limited to this and can be applied to various types of lift trucks.

[0032]

According to the first aspect of the present invention, since the projecting direction of the operating means is inclined toward the grip, the operating means can be easily operated with the thumb without almost loosening the grip of the grip. It has excellent operability and is particularly suitable for operators with small hands.

According to the second aspect of the present invention, both the rotation operation of the grip and the thumb operation of the operation means can be smoothly performed.

According to the third aspect of the present invention, the lift truck can be moved forward and backward at a desired speed by rotating the grip.

According to the fourth aspect of the invention, the lifter of the lift truck can be raised and lowered smoothly by rotating the grip.

According to the fifth aspect of the invention, the opposing angle between the axis of the grip and the axis of the operation button is set to an acute angle, and the upper surface of the operation button is inclined toward the outer peripheral surface of the grip. Since the two are relatively close to each other, the operation buttons can be easily operated with the thumb without substantially loosening the grip, and the operability is excellent, which is particularly suitable for an operator with small hands.

According to the sixth aspect of the present invention, the thumb is moved in an arc shape around the axis perpendicular to the axis of the grip while the grip is held, so that each operation button can be securely moved by the thumb. Can be pressed.

According to the seventh aspect of the present invention, the thumb is moved in an arc around the axis of the grip while the grip is held, so that the thumb can press each operation button more reliably. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an order picking lift according to a first embodiment of the present invention.

2 (a) is a side view of the essential part, FIG. 2 (b) is a view as seen from an arrow AA, and FIG. 2 (c) is a view as seen from an arrow BB.

FIG. 3 is a perspective view showing a main part of an order picking lift according to a second embodiment of the present invention.

4 (a) is a side view of the essential part, FIG. 4 (b) is a view taken along CC, and FIG. 4 (c) is a view taken along DD.

FIG. 5 is a perspective view showing a main part of an order picking lift according to a third embodiment of the present invention.

6 (a) is a side view of the essential part, FIG. 6 (b) is a view as seen from arrow EE, and FIG. 6 (c) is a view as seen from arrow FF.

FIG. 7 is a perspective view of an order picking lift.

FIG. 8 is a perspective view of a main part showing a conventional example.

9A is a side view of the essential part, FIG. 9B is a view taken along a line GG, and FIG. 9C is a view taken along a line HH.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body 2 Lifter 5 Operation part 10 Grip 11 Operation box 11a Operation surface 17-19 Operation button (operation means) O1 Grip axis O2 Operation button axis O3 Approximately perpendicular to the axis of the grip almost in the center of the grip. O4 virtual circle O5 virtual circle α Opposing angle between grip axis and each operation button

Claims (7)

[Claims] 1. A stick-shaped grip is provided on an operating portion, and operating means operable for thumb operation is provided near the grip, and a projecting direction of the operating means is inclined to the grip side. Features lift truck. 2. The lift truck according to claim 1, wherein said grip and said operating means are integrally rotatable. 3. The lift truck according to claim 2, wherein rotation of the grip and the operation means is an accelerator operation. 4. The lift truck according to claim 2, wherein rotation of the grip and the operation means is a lift operation. 5. The operation means according to claim 1, wherein the operation means comprises an operation button, and an opposing angle between an axis of the operation button and an axis of the grip is set to an acute angle. Lift truck as described in. 6. A plurality of operation buttons are formed in an arc shape at a predetermined angle on an operation surface along an imaginary circle drawn about an axis perpendicular to the axis of the grip at a substantially central portion of the grip. The lift truck according to claim 5, wherein the lift truck is arranged. 7. The operation button according to claim 5, wherein a plurality of the operation buttons are arranged in an arc at a predetermined angle on an operation surface along a virtual circle drawn around the axis of the grip.
Or the lift truck according to 6.