JPH06351111A - Controller for vehicle - Google Patents

Abstract

PURPOSE:To easily alter a plurality of control data groups in response to an operator's alternation in a short time by inputting the groups at each of a plurality of types of keys for operating key switches in a state, that a control type is designated and storing the plurality of the groups in memory means. CONSTITUTION:Control data groups having control data such as a traveling acceleration, a traveling speed limit, a tilting speed, an attachment speed, etc., are input through a keyboard 11 in a state that a control type is previously designated by a plurality of types of keys, and stored in an EEPROM 15 of charging/displaying microcomputer 2 according to the respective control types. At the time of driving a vehicle, a key responsive to an operator is inserted to a key switch 31 and operated to be turned to an ON position thereby to designate a desired control type. As a result, the group of the designated control type is input from the EEPROM 15 to an EEPROM 16 of a traveling-loading microcomputer 3, and stored in the EEPROM 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a vehicle such as a rechargeable forklift.

[0002]

2. Description of the Related Art A control device for a rechargeable forklift is shown in FIG. 1, which comprises a keyboard 1, a charging / display microcomputer 2, a traveling / loading microcomputer 3, a liquid crystal display 4 and the like. There is. As shown in FIG. 2, the keyboard 1 inputs a control data group for determining the control type of the forklift. The control data group controls the traveling acceleration, traveling speed limitation, tilt speed, attachment speed, etc. of the forklift. It consists of control data about the item. The keyboard 1 is provided in the operation part of the forklift, and the keyboard 1 is provided with a mode select switch 6, an increasing level select switch 7, a decreasing level select switch 8, a traveling speed limit switch 9, and the like. ing.

The mode select switch 6 is used to select a control item to be set. Normally, the control item which is set as the running acceleration is the running acceleration → running speed limit → tilt speed → attachment when the mode select switch 6 is pressed. It is changed in order of speed → running acceleration.

The increase level select switch 7 and the decrease level select switch 8 are used to input control data in eight steps for each selected control item. When the increase level select switch 7 is pressed, the control data is input. As a result, large set values are sequentially input, and by pressing the reduction level select switch 8, small set values are sequentially input as control data. It should be noted that a set value in the range of 4 km / h to the maximum speed is input as the traveling speed limit, and a set value in the range of 100% or 30% of the maximum speed is input as the tilt speed. The attachment speed input is valid when the attachment is mounted on the forklift.

The traveling speed limit switch 9 is for designating whether the traveling speed limit setting is valid or invalid. By pressing the traveling speed limit switch 9, the traveling speed limit setting is validated, and when it is pressed again, The travel speed limit setting is invalid.
Microcomputer 2 for charging / display and microcomputer 3 for traveling / cargo handling
Are CPUs 11 and 12, ROMs 13 and 14 that store control programs for the CPUs 11 and 12, and EEPROMs 15 and 16 that can electrically rewrite the stored contents.
And RAMs 17 and 18 having work areas necessary for the CPUs 11 and 12 to execute various processes.

As shown in FIG. 3, control data such as traveling acceleration, traveling speed limitation, tilt speed, and attachment speed from the keyboard 1 are stored in the EEPROMs 15 and 16 of the charging / display microcomputer 2 and the traveling / loading microcomputer 3.
Is input and stored. The display of the liquid crystal display 4 is controlled by the CPU 11 of the charging / display microcomputer 2 and the CP of the traveling / cargo handling microcomputer 3 is controlled.
U12 controls the traveling motor and the cargo handling motor of the forklift.

As shown in FIG. 4, the liquid crystal display is
It is provided in the meter panel of the operating part of the forklift, and is displayed on the liquid crystal display 4 by a level indicator 20, an attachment speed setting indicator 21 displayed when setting the attachment speed, and when setting the tilt speed. A tilt speed setting indicator 22, a travel speed limit valid indicator 23 displayed when the travel speed limit is valid, a travel speed limit invalid indicator 24 displayed when the travel speed limit is invalid, and the like are arranged from left to right. ing.

The level indicator 20 indicates the control data of each control item, and has eight-stage display sections A1 to A8,
Display mark 2 of substantially pentagonal shape on any of the display parts A1 to A8
6 is displayed. The numbers "1" to "8" are sequentially displayed on the respective display units A1 to A8 from the leftmost display unit A1 to the rightmost display unit A8, and the leftmost display unit A1 and the numbers are displayed. Between "1" of "1", "E" is displayed when the traveling acceleration is set, and "L" is displayed when the traveling speed limit is set. Also, the display section A8 at the right end and the number "8"
In between, "P" is displayed when the traveling acceleration is set, and "H" is displayed when the traveling speed limit is set. Furthermore,
Between “E” and “P”, “←
"SPEED LIMIT →" is displayed.

The input of the control data group is specifically shown in FIG.
It is performed as shown in. That is, the liquid crystal display 4 normally displays the traveling acceleration, and the display mark A having a substantially pentagonal shape is displayed on any of the display units A1 to A8 of the level indicator 20, and "E", "P" is displayed. In the above state, when changing the control data of the running acceleration, the increase level select switch 7 or the decrease level select switch 8 is pressed,
The display mark 26 is moved to the right to increase the running acceleration, or the display mark 26 is moved to the left to decrease the running acceleration.

From the above state, each time the mode select switch 6 is pressed, the liquid crystal display 4 sequentially displays the traveling speed limit, tilt speed, and attachment speed display screens. For traveling speed limitation, "← SP
“EED LIMIT →” and “L” and “H” are displayed. A tilt speed setting indicator 22 is displayed on the tilt speed display screen, and an attachment speed setting indicator 21 is displayed on the attachment speed display screen. Then, by pressing the increase level select switch 7 or the decrease level select switch 8 on each display screen, the setting of the traveling speed limit, the tilt speed, and the attachment speed can be changed in the same manner as above.

When the traveling speed limit switch 9 is pressed, the traveling speed limit valid indicator 23 is displayed, and the control data input for the traveling speed limit becomes valid. When the traveling speed limit switch 9 is pressed again, instead of the traveling speed limit effective indicator 23,
The traveling speed limit invalid indicator 24 is displayed, and the control data input in the traveling speed limit becomes invalid. In addition, in order to display the display mark 26 on the display unit A8 having the maximum set value, that is, the number "8", by the traveling speed limitation,
When the control data is input, the traveling speed cannot be limited, and the traveling speed limitation effective indicator 23 is not displayed.

As described above, in the conventional case, when changing the control data for the four control items of the traveling acceleration, the traveling speed limit, the tilt speed, and the attachment speed, the liquid crystal display is sequentially operated by the mode select switch 6. 4, it is necessary to call up each display screen and operate the increase level select switch 7 or the decrease level select switch 8 to change the control data for each control item.

[0013]

Therefore, there is a problem when the operator is changed when several operators share one forklift. That is, when the operator changes, the control data group including the traveling acceleration, the traveling speed limit, the tilt speed, and the attachment speed is changed, and when the control type of the forklift is changed, the control data group can be easily changed. There was a problem that it could not be done in a short time. An object of the present invention is to provide a vehicle control device that solves the above problems.

[0014]

In order to achieve the above object, a feature of the present invention is that a control data group is constituted by control data relating to a plurality of control items of a vehicle, and the control data group comprises: The control type of the vehicle is determined, the vehicle is controlled, and the key switch for connecting and disconnecting the main power source is provided. There are a plurality of types of keys for operating the key switch, and each key is a main power source in the key switch. Is connected and can be held at the ON position that specifies the control type for each key. By inputting the control data group for each control type specified by the key, you can enter multiple control data groups. Input means, a storage means for storing a plurality of control data groups input from the input means, and a control type control data group designated by the designating means. Hazuki lies in that a control means for controlling the vehicle.

[0015]

When the control data group is input for each control type, the key for operating the key switch is selected, the control type is designated, and the control data group is input and stored. The means stores a plurality of control data groups. When the vehicle is operating, the control type is designated by selecting a key in response to the change of the operator, and the vehicle is controlled by the control means based on the control data group of the designated control type.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a rechargeable forklift will be described below, but only the differences from the prior art will be described with reference to FIGS. 6 to 9. 6 to 9
1, the same reference numerals as those in FIG. 1 denote the same members and have the same functions unless otherwise specified. The embodiment will be described with reference to FIGS. 2, 4, and 5 as appropriate. Figure 6
Shows a control device of a forklift truck, which is composed of a keyboard 1 shown as an input means, a key switch 31, a charging / display microcomputer 2, a traveling / loading microcomputer 3, and the like.

The key switch 31 connects and disconnects the main power source and designates the control types 1 to 10 of the vehicle.
It has first to fourth four contacts. As shown in FIG.
The key switches 31 are numbered from 1 to 10
The type of the key 34 can be inserted, and the key 34 is the same as in FIG.
As shown by the solid line in FIG.
As shown by the phantom line in FIG. 7, the position can be freely changed and held from the same position to the ON position rotated in the clockwise direction. At the OFF position of the key 34, the main power supply is turned off, and the key 34 can be inserted into and removed from the key switch 31. Further, at the ON position of the key 34, the main power source is connected, but the key 34 cannot be inserted into or removed from the key switch 31. Further, as shown in FIG. 8, when the key 34 is turned to the ON position, the first to fourth contacts of the key switch 31 are turned on and off according to the number of the key 34.
After being FFed, 10 types of ON / OFF patterns are formed, and the control types 1 to 10 of the vehicle are designated by this.

As shown in FIG. 9, the EEPROM 15 of the charging / display microcomputer 2 is an example of a storage means. For each control type 1 to 10, traveling acceleration, traveling speed limitation, tilt speed, attachment speed, etc. Has an area for storing. Also, the CP of the traveling / cargo handling microcomputer 3
U12 is exemplified as the control means, and as shown in FIG. 9, the EEPROM 16 has a control type running acceleration, running speed limit, tilt speed,
It has an area to store the attachment speed and so on. According to the embodiment configured as described above, first, before the work by the forklift, the EEP of the charging / display microcomputer 2 is performed.
Each control data group is input to the ROM 15 for each control type 1-10.

In this case, as shown in FIG.
After inserting one of the ten types of keys 34 numbered 0 into the key switch 31, press the key 34 from the OFF position,
Rotate to the ON position to specify the control type. Then, as described above with reference to FIGS. 2, 4 and 5, by operating the mode select switch 6, the increasing level select switch 7, and the decreasing level select switch 8, the running acceleration, the running speed Limit, tilt speed,
EEPROM of charging / display microcomputer 2 by inputting a control data group consisting of control data such as attachment speed
Store in 15.

After the above operation, the key 34 inserted in the key switch 31 is replaced with another key 34 and the same operation as described above is performed. In this way, the control data group is input in a state where the control type is specified by the ten types of keys 34 numbered 1 to 10, and the control type is entered in the EEPROM 15 of the charging / display microcomputer 2. Separately, a control data group is stored. When several operators share one forklift, this control data group for each control type is input for each operator and also for each work situation such as the type of cargo and the situation at the site. To be done.

Therefore, when working with a forklift, select the key 34 according to the operator, insert the selected key 34 into the key switch 31, and turn it on.
By turning to the desired position, the desired control type 1-10
Can be specified automatically. As a result, the control data group of the designated control type is transferred to the charging / display microcomputer 2 EE.
EEPR of traveling / cargo handling microcomputer 3 from PROM 15
It is input to the OM 16 and stored. Then, based on the control data group, the CPU 1 of the traveling / cargo handling microcomputer 3
2 controls the traveling motor and the cargo handling motor of the forklift.

As described above, when the control data group consisting of the traveling acceleration, the traveling speed limit, the tilt speed, and the attachment speed is changed to change the control type of the forklift according to the change of the operator, the control data is changed. The group can be changed easily and quickly. Also, key switch 3
Since the control type is specified by the key 34 for operating 1, it is not necessary to additionally provide a means for specifying the control type, the structure can be simplified, and the key 34 for operating the forklift at all times can be used. Since the control type is specified, there is little fear that the operator forgets to specify the control type and operates the forklift to cause an accident.

The following examples are examples of operator-specific settings of the forklift. (1) Control type 2 is set as follows for an expert. Running acceleration-8, running speed limit-8, tilt speed-8, attachment speed-8 (2) For beginners, control type 3 is set as follows. Running acceleration-4, running speed limit-4, tilt speed-1, attachment speed-8 Although the present invention is applied to the rechargeable forklift in the embodiment, the present invention is applicable to other vehicles. Applicable.

[0024]

As described in detail above, according to the present invention,
When the control data group including traveling acceleration, traveling speed limitation, etc. is changed to change the control type of the vehicle in response to the change of the operator, the change of the control data group can be easily and quickly performed. Further, since the control type is designated by the key for operating the key switch, it is not necessary to additionally provide a means for designating the control type, the structure can be simplified, and the key which is always operated when the vehicle is started. As a result, the control type is specified, so there is little risk that the operator forgets to specify the control type, drives the vehicle, and causes an accident.

[Brief description of drawings]

FIG. 1 is a block diagram showing a conventional forklift control device.

FIG. 2 is a front view of a conventional forklift keyboard.

FIG. 3 is an explanatory diagram for explaining control of a conventional forklift.

FIG. 4 is a front view showing a liquid crystal display of a conventional forklift.

FIG. 5 is a diagram for explaining input of a conventional forklift control data group.

FIG. 6 is a block diagram showing a forklift controller according to an embodiment of the present invention.

FIG. 7 is a front view showing the key switch of the forklift according to the embodiment of the present invention.

FIG. 8 is a view showing the contact point O of the key switch according to the embodiment of the present invention.
It is a figure which shows N and an OFF state.

FIG. 9 is an explanatory diagram for explaining control of a forklift according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Keyboard, 2 ... Charging / display microcomputer, 3 ... Traveling / loading microcomputer, 4 ... Liquid crystal display, 6 ... Mode select switch, 7, 8 ... Increase / decrease level select switch, 9 ... Travel speed limit switch , 11, 12
... CPU, 15, 16 ... EEPROM, 31 ... key switch, 34 ... key.

Claims (1)

[Claims] 1. A control data group is composed of control data relating to a plurality of control items of a vehicle, the control type of the vehicle is determined by the control data group, the vehicle is controlled, and a main power source is intermittently connected. In those having a key switch, there are multiple types of keys for operating the key switch, and each key can be held in the ON position where the main power supply is in the connected state in the key switch and the individual key control type is specified. Input means for inputting a plurality of control data groups by inputting a control data group for each control type designated by the key, and storage means for storing the plurality of control data groups input from the input means And a control means for controlling the vehicle based on a control data group of the control type designated by the designating means. .