JPH0881197A - Control stick for reach forklift truck - Google Patents

Abstract

PURPOSE: To carry out plural operations by a right hand only by providing a control stick main body, which can be substantially horizontally turned forward/backward freely while setting the predetermined point as the center and controls forward/backward movement of a vehicle, forming an approximately L-shaped groove part, for holding an elbow in the control stick main body, and arranging varied kinds of control parts in a grip in one end of the control stick main body. CONSTITUTION: A control stick for a reach forklift truck is provided with a control stick main body 12, in which an approximately L-shaped groove part 11 by which an elbow can be held is formed upward, in an upper panel 5 on the front side of a driving unit 2. The control stick main body 12 is supported so as to be substantially horizontally turned forward/backward freely while setting an approximately central point A in the approximately L-shaped bending part, as the center. On the tip side of a grip integrally arranged on one end side of the control stick main body 12, a lift switch 16a, a tilt switch 17a, and a reach switch 18a, which are seesaw type button switches, are arranged for a lift operating part 16, a tilt operating part 17, and a reach operating part 18 for a fork claw individually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reach forklift truck control stick capable of performing forward / backward movement and operation of each working machine in a reachforklift truck.

[0002]

2. Description of the Related Art Conventionally, a pair of left and right reach legs which are forwardly mounted are mounted on a lower front part of a vehicle, and a mast is erected up and down along the left and right reach legs, and a fork is provided along the mast. In a reach forklift truck having pawls that can be raised and lowered, as shown in FIG. 1, a driver unit 2 for an operator to stand on the right rear portion of a vehicle 1 is provided.
Is formed, a handle 4 is provided on an upper panel 3 on the left side of the operating part 2, and a lift lever 6 for raising and lowering a fork pawl is tilted to an upper panel 5 on the front side of the operating part 2 and the fork pawl is tilted back and forth. A work lever operating lever such as a tilt lever 7 and a reach lever 8 for sliding the mast back and forth and a forward / backward moving lever 9 for moving the vehicle forward and backward are provided upright.

[0003]

Conventionally, when operating a reach forklift truck, an operator stands on the operating unit 2 and operates the handle 4 with his left hand, and at the same time operates the lift lever 6, tilt lever 7 and reach lever with his right hand. Although each working machine operating lever of 8 and the forward / backward moving lever 9 are operated, in order to shorten the working time, the working machines are often operated while moving forward / backward.
Therefore, as shown in FIG. 2, the operator operates each of the lift lever 6, the tilt lever 7, and the reach lever 8 with the right hand and operates the forward / backward movement lever 9 with the right elbow, that is, with one right hand, a plurality of operations are simultaneously performed. Was going on.

However, since such an operation is performed by using each lever with one right hand, it is complicated and requires skill, making it impossible for a beginner to operate, and for an expert, it is difficult to operate. . Moreover, since the right hand floats in the air during operation, there is no way to support the body, and there is a risk that the body will shake when the vehicle suddenly stops or turns suddenly. There was a problem in operability and safety because it could not be operated in some cases and malfunctions occurred. An object of the present invention is to solve this problem.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a groove portion for holding an elbow in a substantially L-shape is formed in a front upper panel of a driving portion of a reach truck, and a predetermined portion is formed. In order to move the vehicle forward and backward by allowing the vehicle to move forward and backward substantially horizontally about the point, a grip is provided on one end side of the control stick body, and the fork claw is moved up and down on the grip. There is provided a control rod for a reach forklift truck, comprising: a lift operation part, a tilt operation part for tilting the fork claw back and forth, and a reach operation part for sliding the mast back and forth.

[0006]

[Operation] The operator can operate the reach forklift truck control stick only, and can easily perform lift operation, tilt operation, reach operation, and vehicle forward / backward operation with his / her hand, elbow or each finger. It is possible to easily perform a plurality of operations at the same time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the control stick for a reach forklift truck according to the present invention will be described. As shown in FIG. 3, a reach forklift truck control stick has a substantially L-shaped groove 11 for holding an elbow upwardly formed on an upper panel 5 on the front side of a driving section 2 of the reachforklift truck. The control stick main body 12 is provided with a main body 12.
Is slightly rotated in the front-rear and substantially horizontal directions about a point A, which is substantially the center of the substantially L-shaped bent portion, and is rotated substantially in the front-rear direction to move the vehicle forward and backward. That is, when the control stick main body 12 is rotated forward, the vehicle moves forward, and when it is rotated backward, the vehicle moves backward. Then, a grip 13 is provided so as to be integrated with one end side of the control stick main body 12, and the grip 13 extends obliquely upward in a continuous shape from one end of the control stick main body 12, and at the tip end side thereof. An elongated through hole 14 into which a hand can be inserted is formed. Further, on the tip side of the grip 13, a lift switch 16a of a seesaw type button switch as a lift operation section 16, a tilt switch 17a of a seesaw type button switch as a tilt operation section 17, and a seesaw type as a reach operation section 18 from the tip. The reach switch 18a of the button switch is provided respectively, and these switches are used to raise and lower the fork claw,
It is designed to tilt the fork claws back and forth and slide the mast back and forth. Further, a horn button 19 is provided at the tip of the grip 13.

In this control rod for a reach forklift truck, the rotation of the control rod main body 12 and the operation of each operating portion are electrically transmitted to a controller or the like (not shown) to operate the operation valve or the like. Then, each actuator is operated.

In such a control rod for a reach forklift truck as described above, the operation method is as follows: the operator's right elbow is placed in the groove portion 11 of the control rod main body 12, and the hand of the right hand is through the through hole of the grip 13. 14 from above and insert your thumb, which is your fingertip, into the horn button 19
Also, attach the forefinger to the lift switch 16a, the middle finger to the tilt switch 17a, and the ring finger to the reach switch 18a, and operate each switch with each finger to move the fork claw up and down, tilt the fork claw back and forth, and slide the mast back and forth. At the same time, the hand side is moved around the elbow (point A) to operate the control stick main body 12 to move the vehicle forward and backward.

By configuring the control stick for the reach forklift truck as described above, the operator operates only the control stick for the reach forklift truck to easily perform the lift operation, the tilt operation, the reach operation by the hand, elbow or each finger. Further, the vehicle can be moved forward and backward, and a plurality of operations can be easily performed simultaneously with one right hand. Therefore, a skilled person can enable a beginner to operate the apparatus.

Moreover, the operator's right elbow is the control stick body 1
Since it is held in the second groove portion 11, the body can be prevented from being shaken by being supported by the right elbow during a sudden stop or a sharp turn, and the operability and safety during work can be improved. .

Next, a second embodiment will be described. As shown in FIG. 4, the reach forklift truck control stick has a substantially L-shaped groove portion 11 on the upper panel 5 on the front side of the operating portion 2 of the reachforklift truck, which is similar to the first embodiment and can hold an elbow. Control stick main body 1 with upward facing
2, the control stick main body 12 is adapted to pivot slightly horizontally in the front-rear direction about a point A at the substantially center of the bent portion in the substantially L-shape. so,
It is designed to move the vehicle forward and backward. Then, a grip 13 is erected on the upper part of one end side of the control stick main body 12,
The grip 13 is tilted in the front-rear direction and the left-right direction, and the front-rear tilt serves as a lift operation unit 16 for lifting and lowering the fork claws, and the left-right tilt is a reach operation unit 18. The mast slides back and forth. Further, the grip 13 has a tilt forward tilt switch 17b and a tilt rear tilt switch 1 which are button switches as the tilt operating section 17.
7c is provided on the side surface to tilt the fork back and forth, and a horn button 19 is provided at the leading edge.

In such a control stick for a reach forklift truck, the operation method is as follows: the operator's right elbow is placed in the groove 11 of the control stick main body 12, and the grip 13 is gripped with the right hand. Attach the thumb to the horn button 19, attach the index finger to the tilt forward tilt switch 17b, and attach the middle finger to the tilt back tilt switch 17c, tilt the grip 13 to raise and lower the fork claw, and slide the mast back and forth. The switch is operated to tilt the fork claw forward and backward, and the hand side is moved around the elbow (point A) to operate the control stick main body 12 to move the vehicle forward and backward.

By constructing the control stick for the reach forklift truck in this manner, it is possible to easily perform a plurality of operations with one right hand at the same time as in the first embodiment. In addition to making it possible, by holding the right elbow of the operator in the groove portion 11 of the control stick main body 12, it is possible to prevent the body from being shaken by supporting the body during a sudden stop or a sharp turn. It is possible to improve operability and safety at the time.

In the second embodiment described above, the tilt operation of the grip 13 to the front and rear or to the left and right is performed by the lift operation part 16 and the reach operation part 18.
The tilt operating section 17 may be used without being limited to this.

Next, a third embodiment will be described. As shown in FIG. 5, a reach forklift truck control stick has a groove portion 1 in a substantially L-shape capable of holding an elbow in an upper panel 5 on the front side of a driving portion 2 of the reach truck.
1 is provided with the control stick main body 12 formed upward, and the control stick main body 12 is adapted to rotate slightly in the front-rear and substantially horizontal directions around a point A at the substantially center of the substantially L-shaped bent portion.
The vehicle is moved forward and backward by rotating the vehicle substantially horizontally. Then, a grip 13 is pivotally attached to one end side of the control stick main body 12 so as to be vertically rotatable,
The grip 13 is rotated up and down to lift the lift operation portion 16
The fork pawl is moved up and down. Further, the grip 13 is provided with a reach switch 18a of a seesaw type button switch as a reach operating part 18 and a tilt switch 17a of a seesaw type button switch as a tilt operating part 17 to slide the mast back and forth, front and rear of a fork claw. As it tilts, a horn button 19 is provided at the leading edge.

In such a control stick for a reach forklift truck, the operation method is as follows: the operator's right elbow is placed in the groove 11 of the control stick main body 12, and the grip 13 is gripped by the right hand. The thumb is attached to the horn button 19, the index finger is attached to the reach switch 18a, and the middle finger is attached to the tilt switch 17a. The grip 13 is turned up and down to raise and lower the fork claws, and each finger is operated to operate each switch. The front and rear sliding of the fork claw and the forward and backward tilting of the fork claw are performed, and the hand side is moved around the elbow (point A) to operate the control stick main body 12 to move the vehicle forward and backward.

By configuring the control stick for the reach forklift truck in this way, it is possible to easily perform a plurality of operations simultaneously with one right hand, as in the first and second embodiments.
Skilled persons can enable beginners to operate from the beginning, and by holding the right elbow of the operator in the groove 11 of the control stick body 12, the body can be supported and shaken during a sudden stop or a sharp turn. Can be prevented, and operability and safety during work can be improved.

In the third embodiment described above, the vertical movement of the grip 13 is performed by the lift operating portion 16, but the present invention is not limited to this, and the reach operating portion 18 and the tilt operating portion 17 are not limited thereto. It may be used as.

Next, a fourth embodiment will be described. As shown in FIG. 6, the reach forklift truck control stick can hold an elbow in a substantially L-shape on the front upper panel 5 of the drive unit 2 of the reachforklift truck as in the first and second embodiments. The control stick main body 12 is provided with a groove portion 11 formed upward, and the control stick main body 12 is adapted to slightly rotate in the front-rear and substantially horizontal directions about a point B at the substantially center of one end side thereof. The vehicle is moved forward and backward by turning to. And the control stick main body 1
A grip 13 is erected on the upper part of one end side of 2, and a lift switch 16a of a seesaw type button switch as a lift operating portion 16 and a reach switch 18a of a seesaw type button switch as a reach operating portion 18 and a tilt are provided on the grip 13. A tilt switch 17a, which is a seesaw-type button switch as the operation unit 17, is provided to raise and lower the fork claw,
The mast can be slid back and forth and the fork claws can be slanted back and forth, and a horn button 19 is provided at the leading edge.

In such a control stick for a reach forklift truck as described above, the operation method is as follows: the operator's right elbow is placed in the groove 11 of the control stick main body 12, and the grip 13 is held with the right hand. Attach the thumb to the horn button 19, the index finger to the lift switch 16a, the middle finger to the reach switch 18a, and the ring finger to the tilt switch 17a, and operate each switch with each finger to move the fork claw up and down and slide the mast back and forth. The fork claw is tilted forward and backward, and the elbow is moved around the hand side (point B) to operate the control stick main body 12 to move the vehicle forward and backward.

By constructing the control stick for a reach forklift truck in this way, it is possible to easily perform a plurality of operations with one right hand at the same time as in the first, second and third embodiments. In addition to being able to be operated by a beginner, the operator's right hand can be held by the grip 13 to prevent the body from being shaken by supporting the body during a sudden stop or a sharp turn. It is possible to improve operability and safety at the time.

Further, in each of the above-described embodiments, the height of the control stick for the reach forklift truck can be arbitrarily set only by providing the vertical height adjusting mechanism below the center of rotation of the control stick main body 12. Therefore, it is difficult to set the height arbitrarily because it is necessary to individually set the work machine operation lever and the forward / backward movement lever in the related art, and it is difficult to match the height of the operator. In the present embodiment, by setting the height of the control stick for reach forklift truck according to the height of the operator, the operator can take an optimum posture during work, and further improve the operability and safety. You can

[0024]

The operator can operate only the reach forklift truck control stick to easily perform lift operation, tilt operation, reach operation, and forward / backward movement operation of the vehicle with his / her hand, elbow or each finger. Multiple operations can be easily performed simultaneously with one device. Therefore, a skilled person can enable a beginner to operate the apparatus. Moreover, by using button switches for the lift operation part, tilt operation part, and reach operation part of the grip, it is possible to easily perform each operation with fingers, and by using the seesaw type button switch, the number of switches installed can be reduced. By reducing the number, it is possible to reduce the number of assembling steps and improve the operability during use. In addition, since the operator holds a part of the body on the reach forklift truck control stick, it is possible to prevent the operator from swinging by supporting the body when the vehicle suddenly stops or turns sharply. And safety can be improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view in the vicinity of an operating portion of a conventional reach forklift truck.

FIG. 2 is an explanatory diagram showing an operating state of each work implement operating lever and a forward / backward moving lever in a conventional reach forklift truck.

FIG. 3 is a perspective view showing a first embodiment of a control stick for a reach forklift truck according to the present invention.

FIG. 4 is a perspective view showing a second embodiment of the control stick for a reach forklift truck according to the present invention.

FIG. 5 is a perspective view showing a third embodiment of the control stick for a reach forklift truck according to the present invention.

FIG. 6 is a perspective view showing a fourth embodiment of the control stick for a reach forklift truck according to the present invention.

[Explanation of symbols]

1 ... Vehicle, 2 ... Driving part, 3 ... Upper panel, 4 ... Steering wheel, 5 ... Upper panel, 6 ... Lift lever, 7 ... Tilt lever, 8 ... Reach lever, 9 ... Forward / reverse lever, 11 ...
Groove portion, 12 ... Control stick main body, 13 ... Grip, 14 ... Through hole, 16 ... Lift operation portion, 16a ... Lift switch, 1
7 ... Tilt operation part, 17a ... Tilt switch, 17
b ... tilt forward tilt switch, 17c ... tilt rear tilt switch, 18 ... reach operating section, 18a ... reach switch,
19 ... Horn button.

Claims (5)

[Claims] 1. A reach part 11 having a substantially L-shape for holding an elbow is formed in an upper panel 5 on the front side of a driving part 2 of a reach truck, and is rotatable about a predetermined point in a substantially horizontal direction. Is provided with a control stick main body 12 for moving the vehicle forward and backward, and a grip 13 is provided on one end side of the control stick main body 12.
The grip 13 is provided with a lift operation part 16 for raising and lowering the fork claw, a tilt operation part 17 for tilting the fork claw back and forth, and a reach operation part 18 for sliding the mast back and forth. Control stick for reach forklift truck, which is characterized by that. 2. A button switch is used in the lift operating portion 16, the tilt operating portion 17, and the reach operating portion 18 of the grip 13, by which the fork pawl is moved up and down, the fork pawl is tilted forward and backward, and before and after the mast. The reachable forklift truck control stick according to claim 1, wherein the control stick is adapted to slide. 3. The control stick for a reach forklift truck according to claim 2, wherein the button switch is a seesaw type. 4. A fork claw that can be tilted back and forth or left and right with respect to the control stick main body 12 as a lift operating portion 16, a tilt operating portion 17, or a reach operating portion 18 of the grip 13. The reachable forklift truck control stick according to claim 1, characterized in that it is adapted to move up and down, tilt forward and backward of a fork claw, and slide forward and backward of a mast. 5. The fork pawl is configured as a lift operating portion 16, a tilt operating portion 17, or a reach operating portion 18 of the grip 13 such that the grip 13 is pivotally attached to the control stick main body 12 so as to be vertically rotatable. The reachable forklift truck control stick according to claim 1, characterized in that it is adapted to move up and down, tilt forward and backward of a fork claw, and slide forward and backward of a mast.