JP7286470B2 - work machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to, for example, a work machine having an anti-theft function.

BACKGROUND ART Conventionally, a working machine disclosed in Patent Document 1 is known.
The work machine disclosed in Patent Document 1 has an input device for inputting first authentication information and a control device that stores second authentication information. The control device compares the first authentication information and the second authentication information, and permits driving of the prime mover when the matching is successful.
The first authentication information and the second authentication information are multi-digit numbers composed of a combination of 10 numbers from 0 to 9.

The input device has 10 manipulators corresponding to numbers 0-9. Each operating tool is operated independently, and a number corresponding to the operated operating tool is input.

Japanese Patent Application Laid-Open No. 2011-905

The work machine disclosed in Patent Document 1 has the problem that the structure of the input device is complicated and the cost is high.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a work machine capable of simplifying an input device for inputting first authentication information.

A work machine according to an aspect of the present invention includes a prime mover, an input device for inputting first authentication information including at least one of first information and second information, and acquiring the first authentication information input to the input device. a storage unit that stores the second authentication information in advance; and an authentication unit that compares the first authentication information and the second authentication information and permits driving of the engine when the matching is successful. , wherein the input device comprises a plurality of switches, a single operation tool for independently operating one switch among the plurality of switches to input first information, and a control device comprising: a compound operating tool for inputting second information by operating at least two switches in a compound manner, wherein the single operating tool presses the switch in the operating direction of the single operating tool; is provided so as to overlap one of the switches of the above so as to overlap in the operation direction of the single operation tool, and the compound operation tool presses the switch in the operation direction of the compound operation tool. , a switch pressed by one single operation tool out of the plurality of single operation tools, and a switch pressed by another single operation tool out of the plurality of single operation tools; They are superimposed so as to overlap in the operating direction .

The compound operation tool is provided between the single operation tools and straddles at least two adjacent switches among the plurality of switches.

The control device cancels the first information or the second information acquired immediately before the operation of the number of switches exceeding the number of the switches to be operated in combination, or cancels all of the acquired first information and the second information. It has a corrector that cancels the information.
The work machine comprises: a prime mover; an input device having four operating tools ; and first information input by four independent operations for selectively operating any one of the four operating tools. and second information input by six kinds of compound operations, which are compound operations for operating any two of the four operating tools and are operations of all combinations of the two operating tools. an information generation unit that generates first authentication information by means of a memory unit that stores second authentication information in advance; and a storage unit that stores second authentication information in advance; and a control device having an authentication unit that permits the driving of the.

The control device determines that a single operation has been performed when no operation of another operation tool is recognized during the period from the start of operation to the end of operation of one operation tool, and It is determined that a compound operation has been performed when the operation of another operation tool is recognized at the same time.
The control device determines that a single operation has been performed when no operation of the other operation tool is recognized within a certain period of time from the start of operation of one operation tool, and a predetermined time has passed since the start of operation of the one operation tool. If the operation of another operation tool is recognized until later, it is determined that a compound operation has been performed.

The control device cancels the first information or the second information acquired immediately before, or cancels all the acquired first information when the number of manipulators exceeding the number of the manipulators to be operated in combination is operated. and a corrector for canceling the second information.

With the above configuration, the input device can be simplified.

It is a figure which shows the input device which concerns on 1st Embodiment. 1 is a configuration diagram showing a control system for a working machine; FIG. 3 is a block diagram showing a connection configuration between an input device and a control device; FIG. It is a figure which shows the modification of the input device which concerns on 1st Embodiment. It is a block diagram which shows the control system which concerns on 2nd Embodiment. It is a figure which shows the input device which concerns on 2nd Embodiment. FIG. 11 is a first diagram for explaining a single operation and a compound operation; It is a second diagram for explaining a single operation and a compound operation. FIG. 4 is a block diagram showing another example of the connection configuration between the input device and the control device; It is a schematic side view of a lawn mower.

Hereinafter, the present invention will be described with appropriate reference to the drawings.
[First embodiment]
FIG. 8 shows an overall view of the working machine. A working machine is a lawn mower 1 . The work machine may be a tractor, a combine harvester, a rice transplanter, a backhoe, a skid steer loader, a compact track loader, or the like.

As shown in FIGS. 2 and 8 , the mower 1 is, for example, a riding mower, and includes a vehicle (vehicle body) 2 , a traveling device 3 , a working device 4 , and a prime mover 5 . The travel device 3 has front wheels 3F and rear wheels 3R provided on the vehicle body 2 . The working device 4 is a device that can be driven by the power of the prime mover 5, and is, for example, a mowing device that is driven by the power of the prime mover 5 to cut grass. The work device 4 has a rotary shaft 10 rotatably supported by the vehicle body 2 or the like, and a cutting blade (cutter) 11 provided on the rotary shaft 10 . In this embodiment, the work device 4 has a plurality of rotating shafts 10 and a plurality of cutting blades 11 attached to each of the rotating shafts 10 . In this embodiment, as shown in FIG. 2, the working device 4 includes three rotating shafts 10a, 10b, 10c and three cutting blades 11a, 11b, 11c. The work device 4 can be moved up and down with respect to the vehicle body 2 by, for example, a hydraulic actuator or the like.

The prime mover 5 is a machine that generates power, and is at least an electric motor that is driven by electric power. Note that the prime mover 5 may be of a hybrid type having an internal combustion engine such as a gasoline engine or a diesel engine and an electric motor. The prime mover 5 includes a first electric motor 8 that transmits power to the travel device 3 and a second electric motor 9 that transmits power to the working device 4 .

The first electric motor 8 includes a left motor 8L that transmits power to the left rear wheel 3R and a right motor 8R that transmits power to the right rear wheel 3R. The rear wheels 3R can be driven and rotated independently. The second electric motor 9 is provided on each of the rotating shafts 10a, 10b and 10c, and rotates the rotating shafts 10a, 10b and 10c.
The lawn mower 1 includes a power storage device 15 capable of supplying electric power to the prime mover 5 . The power storage device 15 is provided at the rear portion of the vehicle body 2 . The power storage device 15 is detachable from the vehicle body 2 . For example, it is possible to attach the power storage device 15 to the vehicle body 2 by providing a mounting portion 2b for mounting the power storage device 15 on the frame 2a at the rear portion of the vehicle body 2 and setting the power storage device 15 on the mounting portion 2b. be. Further, by opening the bonnet provided at the rear portion of the vehicle body 2, the power storage device 15 mounted on the mounting portion 2b can be removed from the lawn mower 1 to the outside. Note that the power storage device 15 may be of a fixed type that cannot be attached to and detached from the vehicle body 2 .

As shown in FIG. 2, the storage battery device 15 includes a storage battery 15a for storing electric power and a storage battery 15a.
and a control unit 15b for controlling the The storage battery 15 a supplies electric power to the first electric motor 8 (the left motor 8 L and the right motor 8 R) and the second electric motor 9 via the inverter 16 while being attached to the vehicle body 2 . The control unit 15b is composed of a CPU, electric/electronic parts, and the like. That is, the control unit 15b has a protection circuit, a charge/discharge control circuit, etc., and controls the discharge, charge, etc. of the storage battery 15a. For example, the control unit 15b stops discharging or charging when overcharge, overdischarge, overcurrent, or the like occurs in the storage battery 15a, and stops charging when the temperature is equal to or higher than a threshold. In addition, control of the control part 15b is not limited to the example mentioned above.

As shown in FIGS. 2 and 8 , the mower 1 includes a driver's seat 17 provided on the vehicle body 2 and an operating member 18 provided near the driver's seat 17 . The operation member 18 includes a left steering lever 18a for steering the vehicle body 2 to the left, a right steering lever 18b for steering the vehicle body 2 to the right, a reaping operation lever 18c for operating the driving of the cutting blade 11, and an elevation of the working device 4. and an elevating lever 18d for operating the .

FIG. 2 shows the control system in the lawn mower 1. As shown in FIG.
As shown in FIG. 2 , the mower 1 has a control device 20 . The control device 20 is a device that controls the prime mover 5 . In this embodiment, the control device 20 controls the work device 4 , ie the three second electric motors 9 . The control device 20 also controls the first electric motor 8 . Specifically, the controller 20 is connected to a sensor 22a for detecting the operation of the left steering lever 18a, a sensor 22b for detecting the operation of the right steering lever 18b, and a sensor 22c for detecting the operation of the reaping operation lever 18c. there is

When the sensor 22a detects the operation of the left steering lever 18a, the control device 20 outputs a control signal for driving the left motor 8L to the inverter 16 to drive the left motor 8L. When the sensor 22b detects the operation of the right steering lever 18b, it outputs a control signal for driving the right motor 8R to the inverter 16 to drive the right motor 8R. When the sensor 22 c detects the operation of the reaping operation lever 18 c , the control device 20 outputs a control signal for driving the second electric motor 9 to the inverter 16 to drive the second electric motor 9 .

A sensor 22d that detects the operation of the lifting lever 18d is connected to the control device 20. As shown in FIG. When the sensor 22d detects the operation of the lifting lever 18d, the control device 20 outputs a control signal to a control mechanism that controls a hydraulic actuator or the like for lifting the work device 4, thereby lifting the work device 4. As shown in FIG.
As shown in FIG. 2 , a switch (ignition switch) 30 that can be switched ON/OFF is connected to the control device 20 . The ignition switch 30 is arranged near the driver's seat 17 and can be operated by the driver (operator). When the ignition switch 30 is switched from OFF to ON, the control device 20 is activated.

Between the storage battery 15 a of the power storage device 15 and the inverter 16 , a first switching section 31 is connected which includes a relay or the like that can be switched ON/OFF. When the first switching unit 31 is OFF, the power of the storage battery 15a is not supplied to the inverter 16 . Further, when the first switching unit 31 is switched from OFF to ON, the power of the storage battery 15a is supplied to the inverter 16, and the inverter 16 is activated.

Between the inverter 16 and the electric motors (the first electric motor 8 and the second electric motor 9), a second switching section 33 including a relay or the like that can be switched ON/OFF is connected. When the second switching unit 33 is OFF, the electric power (control signal) output from the inverter 16 is not supplied to the electric motors 8 and 9 . When the second switching unit 33 is switched from OFF to ON, the electric power output from the inverter 16 can be supplied to the electric motors 8 and 9 . Note that the second switching unit 33 is not necessarily required and may be omitted.

Now, the control device 20 has an anti-theft function. For example, when the first authentication information input to the input device 40 and the second authentication information stored in advance are successfully authenticated, the control device 20 permits the drive of the prime mover 5, and when the authentication is not successful, Driving of the prime mover 5 is not permitted.
As shown in FIG. 2, the mower (working machine) 1 has an input device 40 for inputting first authentication information. The input device 40 is arranged, for example, near the driver's seat 17 and can be operated by the driver. The input device 40 is connected to the control device 2 , and the control device 20 can acquire first authentication information input to the input device 40 .

The control device 20 also has a storage unit 21 that stores second authentication information in advance. The storage unit 21 is composed of a nonvolatile memory or the like. The second authentication information is set for each lawn mower 1 (body 2).
In this embodiment, the first authentication information and the second authentication information are single-digit numbers including numbers or multi-digit numbers including multiple numbers. The number of digits of the first authentication information and the second authentication information is preferably a plurality of digits. good. The first authentication information and the second authentication information may contain characters, symbols, or the like.

The control device 20 also has a storage unit 21 , an authentication unit 23 and an acquisition unit 25 . The storage unit 21 is configured by a nonvolatile memory or the like, and stores second authentication information in advance. The second authentication information stored in the storage unit 21 is set for each lawn mower 1 (body 2).
The authentication unit 23 and the acquisition unit 25 are composed of electrical/electronic components provided in the control device 20, programs stored in the control device 20, and the like. Acquisition unit 25 acquires the first authentication information from input device 40 . Authentication unit 23 collates the first authentication information and the second authentication information. If the authentication unit 23 succeeds in matching the first authentication information and the second authentication information (the first authentication information and the second authentication information match), the authentication unit 23 permits the drive of the prime mover 5 . Further, if the collation fails (the first authentication information and the second authentication information do not match), driving of the prime mover 5 is not permitted.

Specifically, when the first authentication information and the second authentication information match, the control device 20 determines that the matching has been established, switches the first switching unit 31 to ON, and puts the inverter 16 into the activated state. If the first authentication information and the second authentication information do not match, the control device 20 determines that the matching is not established, keeps the first switching unit 31 OFF, and does not start the inverter 16 . If the first authentication information and the second authentication information do not match, the inverter 16 is not activated (the drive of the prime mover 5 is not permitted), thereby preventing theft.

The ON/OFF switching of the second switching section 33 may be linked to the ON/OFF switching of the first switching section 31, or an ON/OFF switching operation of the second switching section 33 may be performed manually. You can also use Further, without providing the first switching section 31, the second switching section 33 is switched ON when the first authentication information and the second authentication information match, and the second switching section 33 is switched OFF when they do not match. may be held at .

Further, the authentication unit 23 may count the number of times the authentication fails, and notify the surroundings of the abnormality when the number of failures exceeds a predetermined number. This notification is performed by a notification unit 39 mounted on the vehicle 2 or the like. The notification unit 39 is configured by components, devices, etc., such as an alarm buzzer, horn, hazard lamp, work light, and warning lamp connected to the control device 20 . Note that the notification unit 39 may be any component, device, or the like that can make the user aware that the input number and the registration number do not match.

Further, as shown in FIG. 2, a display section 43 for displaying the first authentication information may be provided. The display unit 43 is provided, for example, in the vicinity of the driver's seat 17 and is provided at a position that can be visually recognized by the driver. Also, the display unit 43 may be provided in the input device 40 .
In the above-described embodiment, the motor 5 is driven when the authentication by the authentication unit 23 is successful, and the driving of the motor 5 is stopped when the authentication is not successful. can be locked directly.

FIG. 1 shows an input device 40. As shown in FIG. The input device 40 has a plurality of switches that can be turned ON or OFF. The plurality of switches are composed of four switches (first switch 44a to fourth switch 44d) in the example shown in FIG.
Switching of the plurality of switches (the first switch 44a to the fourth switch 44d) is performed, for example, by the operating tool 41 that is pressed. When any one of the first to fourth switches 44a to 44d is not pressed by the operating tool 41, the first to fourth switches 44a to 44d are OFF. When one of the first to fourth switches 44a to 44d is pressed by the operating tool 41, one of the first to fourth switches 44a to 44d is ON.

The manipulator 41 has a single manipulator and a compound manipulator. A single operation tool is an operation tool that allows single operation of one switch among a plurality of switches. For example, the single operation tool can perform a single operation of pressing only the first switch 44a out of the first switch 44a to the fourth switch 44d. A compound operation tool is an operation tool capable of performing a compound operation of at least two switches out of a plurality of switches. For example, the compound operation tool can perform a compound operation by simultaneously pressing the first switch 44a and the second switch 44b out of the first switch 44a to the fourth switch 44d.

The single manipulator and the compound manipulator will be described in detail below.
The input device 40 is composed of, for example, a keypad having a plurality of operating tools 41 . The plurality of operating tools 41 are button-type keys. Hereinafter, for convenience of explanation, the operation tool 41 will be referred to as a "key". In this embodiment, the plurality of keys (operating tools) 41 includes ten keys (first key 41a to tenth key 41j), for example.

The first key 41a to the third key 41c are arranged in order in the horizontal direction. The first key 41a is arranged to overlap the first switch 44a, and the third key 41c is arranged to overlap the second switch 44b. The second key 41b is arranged between the first key 41a and the third key 41c and overlapped with the first switch 44a and the second switch 44b. That is, the second key 41b is arranged between the first key 41a and the third key 41c, straddling the first switch 44a and the second switch 44b that are laterally adjacent to each other.

Therefore, the first key 41a is a single operation tool, and when the first key 41a is operated (pressed), only the first switch 44a is operated (pressed). The second key 41b is a compound operation tool, and when the second key 41b is operated, the first switch 44a and the second switch 44b are operated. The third key 41c is a single operation tool, and when the third key 41c is operated, only the second switch 44b is operated.

Also, the eighth key 41h to the tenth key 41j are arranged in order in the lateral direction. The eighth key 41h is arranged to overlap the third switch 44c, and the tenth key 41j is arranged to overlap the fourth switch 44d. The ninth key 41i is arranged between the eighth key 41h and the tenth key 41j and overlapped with the third switch 44c and the fourth switch 44d. The ninth key 41i is arranged between the eighth key 41h and the tenth key 41j, straddling the third switch 44c and the fourth switch 44d adjacent to each other in the horizontal direction.

Therefore, the eighth key 41h is a single operating tool, and when the eighth key 41h is operated, only the third switch 44c is operated. The ninth key 41i is a compound operating tool, and when the ninth key 41i is operated, the third switch 44c and the fourth switch 44d are operated. The tenth key 41j is a single operation tool, and when the tenth key 41j is operated, only the fourth switch 44d is operated.

Also, the fourth key 41d to the seventh key 41g are arranged in order in the lateral direction. The fourth key 41d is arranged between the first key 41a and the eighth key 41h and overlapped with the first switch 44a and the third switch 44c. That is, the fourth key 41d is arranged between the first key 41a and the eighth key 41h, straddling the first switch 44a and the third switch 44c adjacent to each other in the vertical direction.

The seventh key 41g is arranged between the third key 41c and the tenth key 41j and overlapped with the second switch 44b and the fourth switch 44d. That is, the seventh key 41g is arranged between the third key 41c and the tenth key 41j, straddling between the second switch 44b and the fourth switch 44d adjacent to each other in the vertical direction.
The fifth key 41e is arranged between the fourth key 41d and the seventh key 41g and overlapped with the first switch 44a, the third switch 44c and the fourth switch 44d. That is, the fifth key 41e straddles the vertically adjacent first switch 44a and the third switch 44c between the fourth key 41d and the seventh key 41g, and is located between the horizontally adjacent third switch 44a and the third switch 44c. It is arranged across the switch 44c and the fourth switch 44d.

The sixth key 41f is arranged between the fourth key 41d and the seventh key 41g and overlapped with the first switch 44a, the second switch 44b and the fourth switch 44d. That is, the sixth
Between the fourth key 41d and the seventh key 41g, the key 41f straddles the vertically adjacent second switch 44b and fourth switch 44d, and is horizontally adjacent to the first switch 44a and the fourth switch. 2 switch 44b.

Therefore, the fourth key 41d to the seventh key 41g are a compound operation tool, and operating the fourth key 41d operates the first switch 44a and the third switch 44c, and operating the fifth key 41e operates the first switch 44a. , the third switch 44c and the fourth switch 44d are operated, the sixth key 41c is operated to operate the first switch 44a, the second switch 44b and the fourth switch 44d, and the seventh switch 41g is operated to operate the second switch 44b. and the fourth switch 44d are operated.

In summary, the first key 41a, the third key 41c, the eighth key 41h and the tenth key 41j are independent operating tools. A second key 41b, a fourth key 41d to a seventh key 41g, and a ninth key 41i are a compound operating tool. Specifically, the second key 41b, the fourth key 41d, the seventh key 41g and the ninth key 41i are compound operating tools for compoundly operating two switches, and the fifth key 41e and the sixth key 41f are three switches. It is a compound operating tool that operates switches in a compound manner.

FIG. 3 is a block diagram showing an outline of the connection configuration between the input device 40 and the control device 20. As shown in FIG.
As shown in FIG. 3, a first switch 44a is connected through a resistor 47a to an output port 45a, a second switch 44b is connected through a resistor 47b to an output port 45b, and a third switch 44c is connected through a resistor 47c. The fourth switch 44d is connected to the output port 45d through a resistor 47d.

The control device 20 has input ports 46a to 46d, the output port 45a is connected to the input port 46a, the output port 45b is connected to the input port 46b, the output port 45c is connected to the input port 46c, and the output port 45d. is connected to the input port 46d.
The resistors 47a to 47d constitute a signal circuit for sending signals to the control device 20. When the first switch 44a to the fourth switch 44d are operated, the signals are output from the output ports 45a to 45d corresponding to the operated switches. is output. The control device 20 acquires the first authentication information composed of numerals 0-9 based on the signals output from the respective output ports 45a-45d and the combination of the signals. That is, the keypad 40 can input numerals 0 to 9 by operating the four switches (the first switch 44a to the fourth switch 44d) singly or in combination with the operating tool 41. FIG. In other words, the first information (first element), which is one of the elements that make up the first authentication information, is input in the single operation, and the second information, which is one of the elements that make up the first authentication information, is input in the combined operation. (second element) is input. When the first authentication information is a number, the first information and the second information are numbers different from each other.

With reference to the keypad 40 illustrated in FIG. 2, numerical values (first information and second information) that are input when a switch is operated singly or in combination will be described.
First, numbers that are input when a switch is independently operated by a single operating tool will be described.
Different numerical values (first information) are assigned to the first key 41a, the third key 41c, the eighth key 41h, and the tenth key 41j that can be operated independently. When the first key 41a is operated (pressed), the first switch 44a is independently operated (pressed) to input "1". When the third key 41c is operated, the second switch 44b is operated independently to input "3". When the eighth key 41h is operated, the third switch 44c is operated alone to input "8". When the tenth key 41j is operated, the fourth switch 44d is operated alone to input "0".

As described above, any one of 1, 3, 8, and 0 is input to the control device 20 as the first information constituting the first authentication information by operating the single operation tool.
Next, numbers input when a switch is operated in a compound manner by a compound operating tool will be described.
Different numerical values (second information) are assigned to the second key 41b, the fourth key 41d, the seventh key 41g, and the ninth key 41i that can perform compound operations. When the second key 41b is operated, the first switch 44a and the second switch 44b are combined to input "2". When the fourth key 41d is operated, the first switch 44a and the third switch 44c are combined to input "4". When the fifth key 41e is operated, the first switch 44a and the third
The switch 44c and the fourth switch 44d are combined to input "5". When the sixth key 41f is operated, the first switch 44a, the second switch 44b and the fourth switch 44d are combined to input "6". When the seventh key 41g is operated, the second switch 44b and the fourth switch 44d are combined to input "7". When the ninth key 41i is operated, the third switch 44c and the fourth switch 44d are combined to input "9".

As described above, any one of 2, 4, 5, 6, 7 and 9 is input to the control device 20 as the second information constituting the first authentication information by operating the compound operation tool.
The correspondence relationship between the above-described key operations and numbers to be input is shown as an example, and is not limited and can be changed in various ways. Also, the number of constituent elements (numbers, letters, symbols, etc.) that can be input with the keypad 40 is not limited to ten, and may be plural. Also, at least two switches and at least three keys are sufficient. Further, as shown in FIG. 2, the keypad 40 (each key) is arranged so that the key to be operated can be easily understood with respect to the number to be entered (the correspondence relationship between the number to be entered and the key to be operated can be easily determined). As you can see), the numbers to be entered may be displayed.

According to the above embodiment, for example, when an operator sits on the driver's seat 17 and turns on the ignition switch 30, the control device 20 is activated. When the control device 20 is activated, the input of the authentication information is displayed on the display unit 43, and the operator can input the first authentication information by operating the input device 21. FIG. For example, if the first authentication information is a 4-digit number "1964", pressing the first key 41a, the ninth key 41i, the sixth key 41f, and the fourth key 41d in this order enables the first authentication. You can enter information.

Note that, as shown in FIG. 1, the control device 20 may have a correction unit 24 that cancels the last acquired number or all the acquired numbers. The correcting unit 24 is composed of electrical/electronic components and the like provided in the control device 20 .
For example, the correcting unit 20 corrects the input digits obtained immediately before or all of the obtained numbers when a number of keys exceeding the maximum number of switches to be combinedly operated (three in the case of the keypad 40 shown in FIG. 2) is operated. Cancel the entered digits. In the case of the keypad 40 shown in FIG. 2, when the four switches 44a to 44d are operated substantially at the same time, the corrector 20 cancels the last acquired number or all acquired numbers. When operating four switches simultaneously, it is preferable to operate the fifth key 41e and the sixth key 41f. Simultaneous operation also includes pressing one key while pressing another key. Also, the keypad 40 may be provided with a cancel key for canceling the entered number.

FIG. 4 shows a keypad 40 according to a modification.
The keypad 40 shown in FIG. 4 has six keys (first key 42a to sixth key 42f) and four switches (first switch 44a to fourth switch 44d).
The first key 42a to the third key 42c are arranged in order in the horizontal direction. The first key 42a is arranged to overlap the first switch 44a, and the third key 42c is arranged to overlap the second switch 44b. The second key 42b is arranged between the first key 42a and the third key 42c and overlapped with the first switch 44a and the second switch 44b. That is, the second key 42b is arranged between the first key 42a and the third key 42c, straddling the first switch 44a and the second switch 44b that are laterally adjacent to each other.

Therefore, the first key 42a is a single operation tool, and when the first key 42a is operated, only the first switch 44a is operated. The second key 42b is a compound operating tool, and when the second key 42b is operated, the first switch 44a and the second switch 44b are operated. The third key 42c is a single operating tool, and when the third key 42c is operated, only the second switch 44b is operated.

Also, the fourth key 42d to the sixth key 42f are arranged in order in the horizontal direction. The fourth key 42d is arranged to overlap the third switch 44c, and the sixth key 42f is arranged to overlap the fourth switch 44d. The fifth key 42e is arranged between the fourth key 42d and the sixth key 42f and overlapped with the third switch 44c and the fourth switch 44d. That is, the fifth key 42e is arranged between the fourth key 42d and the sixth key 42f, straddling the laterally adjacent third switch 44c and fourth switch 44d.

Therefore, the fourth key 42d is a single operation tool, and when the fourth key 42d is operated, only the third switch 44c is operated. The fifth key 42e is a compound operating tool, and when the fifth key 42e is operated, the third switch 44c and the fourth switch 44d are operated. The sixth key 42f is a single operation tool, and when the sixth key 42f is operated, only the fourth switch 44d is operated.

When the first key 42a is operated, the first switch 44a is operated to input "1", and when the second key 42b is operated, the first switch 44a and the second switch 44b are operated to input "2". When the third key 42c is operated, the second switch 44b is operated to input "3". When the fourth key 42d is operated, the third switch 44c is operated to input "4", and when the fifth key 42e is operated, the third switch 44c and the fourth switch 44d are operated to input "5". When the sixth key 42f is operated, the fourth switch 44d is operated to input "6". In this modification, the first key 42a, the third key 42c, the fourth key 42d, and the sixth key 42f are single operating tools, and the second key 42b and the fifth key 42e are composite operating tools.

In this modification, when at least three switches are operated substantially simultaneously, the correcting unit 24 may cancel the last acquired number or all acquired numbers.
According to the above, the input device 40 includes a plurality of switches (first switch 44a to fourth switch 44d) and a single operation tool ( 1st key 41a, 3rd key 41c, 8th key 41h, and 10th key 41j), and a compound operating tool (second key) for compoundly operating at least two switches out of a plurality of switches to input second information. 41b, fourth key 41d to seventh key 41g, and ninth key 41i).

According to this, it is possible to input the first information by operating one switch alone, and to input the second information by operating the one switch and another switch in combination. That is, one switch can be shared for inputting the first information and for inputting the second information. As a result, the number of switches can be reduced, so that the input device 40 can be simplified and constructed at a low cost. In addition, since the input device 40 has a switch for single operation and compound operation, compared to a conventional switch such as a numeric keypad that is turned on or off only by a single operation, at least a large number of numbers on the switch can be used. etc. can be expressed.

The single operation tool is provided so as to overlap one switch among the plurality of switches, and the compound operation tool is provided so as to overlap at least two switches among the plurality of switches. Therefore, one switch can be turned ON or OFF by operating the single operating tool, and at least two switches can be simultaneously turned ON or OFF by operating the combined operating tool.

The compound operation tool is provided between the single operation tools and straddles at least two adjacent switches among the plurality of switches. It is possible to make the input device 40 compact, which is capable of performing a single operation and a compound operation.
The control device cancels the first information or the second information acquired immediately before, or cancels all of the acquired first information and second information when the number of switches exceeding the number of switches to be combinedly operated is operated. It has a correction unit 24 for canceling. According to this, the first information and the second information can be canceled without separately providing a cancel button for canceling the input first information and second information.
[Second embodiment]
FIG. 5 shows the control system in the second embodiment, and FIG. 6A shows the input device 40 in the second embodiment.

As shown in FIG. 5, the control device 20 has an information generator 26 . The information generator 26 is composed of electrical/electronic components provided in the control device 20, programs stored in the control device 20, and the like. Note that the control device 20 has a correction unit 24 .
The information generator 26 generates first authentication information based on first information input by a single operation of one key (operation tool) and second information input by a combined operation of at least two keys (operation tools). to generate The first authentication information may be generated using only the first information or the second information, or the first authentication information may be generated using a combination of the first information and the second information. In other words, the information generation unit 26 is assigned the first information and the second information generated in a single operation and a combined operation of the manipulator. In this embodiment, numbers from 0 to 9 are assigned to the first information or the second information.

As shown in FIG. 6A, the keypad 40 has four keys (first key 43a to fourth key 43d) and four switches (first switch 44a to fourth switch 44d).
The arrangement form of the first key 43a to the fourth key 43d is such that a key row composed of two keys arranged in the horizontal direction is arranged in two rows in the vertical direction.
The vertical upper key row has the first key 43a and the second key 43b arranged side by side, and the vertical lower key row has the third key 43d and the fourth key 43c arranged side by side. are doing.

The first switch 44a is provided at a position corresponding to the first key 43a, the second switch 44b is provided at a position corresponding to the second key 43b, and the third switch 44c is provided at a position corresponding to the third key 43c. , the fourth switch 44d is provided at a position corresponding to the fourth key 43d.
In the keypad 40, among a plurality of operation tools (first key 43a to fourth key 43d), a single operation for operating one operation tool alone and a compound operation for operating at least two operation tools allow a plurality of operation tools to be operated. can express more information than an operating tool or a plurality of switches. In this embodiment, numbers from 0 to 9 can be represented by four keys and four switches. That is, the keypad 40 can be configured with fewer keys than the number of components to be input, and the keypad 40 can be miniaturized, and the keypad 40 can be arranged in a space-saving manner.

Specifically, when a combined operation of pressing both the first key 43a and the third key 43c is performed, the information generator 26 generates "1" as the second information. When the single operation of pressing only the first key 43a is performed, the information generator 26 recognizes "2" as the first information.
When the combined operation of pressing both the first key 43a and the second key 43b is performed, the information generation unit 26 generates "3" as the second information. When the single operation of pressing only the fourth key 43b is performed, the information generation unit 26 generates "4" as the first information. When the combined operation of pressing both the second key 43b and the fourth key 43d is performed, the information generating section 26 generates "5" as the second information. When the single operation of pressing only the third key 43c is performed, the information generator 26 recognizes "6" as the first information. When the combined operation of pressing both the second key 43b and the third key 43c is performed, the information generator 26 generates "7" as the second information. When the combined operation of pressing both the third key 43c and the fourth key 43d is performed, the information generator 26 generates "8" as the second information. When the combined operation of pressing both the first key 43a and the second key 43b is performed, the information generator 26 recognizes "9" as the second information. When the single operation of pressing only the fourth key 43d is performed, the information generator 26 recognizes "0" as the first information.

The control device 20 recognizes a compound operation by simultaneously pressing a plurality of keys (operating tools) or pressing a plurality of keys (operating tools) within a predetermined time. For example, the control device 20 controls the operation of one of the plurality of operation tools (the first key 43a to the fourth key 43d) from the start of operation (start of pressing) to the end of operation (end of pressing). If the key operation is not recognized, it is determined that the key has been operated independently. As shown in FIG. 6B, for example, after pressing the 1 key and closing the contact of the 1 switch corresponding to the 1 key (turning it on), the pressing of the 1 key is released and the 1 switch is closed. When another key is operated (when another switch is turned ON from OFF) before the contact of . to decide. For example, when one key is pressed while another key is pressed, or when one key and another key are pressed simultaneously, the control device 20 determines that a compound operation has been performed.

On the other hand, if the other switches are held OFF while one switch is turned OFF, the control device 20 determines that a single operation has been performed.
Note that the control device 20 may determine whether the operation is a single operation or a combination operation depending on whether or not the operation of another key is recognized within a certain period of time from the start of operation of one key. For example, as shown in FIG. 6C, the control device 20 waits for a certain period of time (until the time T1 elapses) from the start of operation of the key 1 (from OFF to ON). If the key operation is not recognized (when other switches do not turn from OFF to ON), it is determined that the key was operated independently, and another key is operated within a certain period of time from the start of operation of the first key. When it is recognized (when other switches turn from OFF to ON), it is determined that a compound operation has been performed. It is effective to eliminate chattering by causing the control device 20 to read the input signal a plurality of times to determine whether or not the key has been operated.

Further, the correcting unit 24 cancels the first information or the second information acquired immediately before when the number of manipulators (keys) that exceeds the number of manipulators (keys) to be operated in combination is operated. For example, in the case of a compound operation in which three of four keys (the first key 43a to the fourth key 43d) are pressed substantially simultaneously, the correcting unit 24 corrects the first information or the second information that was input immediately before, all of the The first information and the second information can be canceled.

FIG. 7 is a block diagram showing another connection relationship between the keypad 40 and the control device 20. As shown in FIG. One ends of the switches 44 a to 44 d are connected to the output port 49 . Output port 49 is connected to input port 50 of control device 20 . One end of the resistor 48a is connected to the other end of the first switch 44a, one end of the resistor 48b is connected to the other end of the second switch 44b, and one end of the resistor 48c is connected to the other end of the third switch 44c. , one end of the resistor 48d is connected to the other end of the fourth switch 44d. The other end of resistor 48a is connected between resistors 48e and 48f, the other end of resistor 48b is connected between resistors 48f and 48g, and the other end of resistor 48c is connected between resistors 48g and 48h. and the other end of the resistor 48d is connected between the resistor 48h and the ground side.

The resistors 48a to 48h constitute a voltage dividing circuit 51 that divides the reference voltage V. FIG. When the switches 44a to 44d are operated and closed, the voltage divided by the voltage dividing circuit 51 is output from the output port 49 as a signal. The voltage received by input port 50 allows controller 20 to determine which of the plurality of switches 44a-44d has been actuated.

According to the above embodiment, for example, when an operator sits on the driver's seat 17 and turns on the ignition switch 30, the control device 20 is activated. When the control device 20 is activated, the input of the authentication information is displayed on the display unit 43, and the operator can input the first authentication information by operating the input device 21. FIG. For example, if the first authentication information is a 4-digit number and is "1964", "1" is determined by the combined operation of the first key 43a and the third key 43c, and the first key 43a and the fourth key A combined operation of 43d can determine "9", a single operation of the third key 43c can determine "6", and a single operation of the second key 43b can determine "4".

According to the second embodiment, information for generating the first authentication information based on the first information input by the single operation of one operation tool and the second information input by the combined operation of at least two operation tools. A generating unit 26, a storage unit 21 that stores second authentication information in advance, and an authentication unit that compares the first authentication information and the second authentication information and permits driving of the prime mover 5 when the matching is successful. 23 and a control device 20 having.

According to this, it is possible to input the first information by operating one operating tool alone, and to input the second information by operating the one operating tool and another operating tool in combination. . That is, one operating tool can be used in common for inputting the first information and for inputting the second information. As a result, the input device 40 can be simplified because the number of operating tools can be reduced. Further, since a large number of numbers can be expressed with a small number of keys, the keypad 40 can be miniaturized, and the keypad 40 can be arranged in a space-saving manner.

The control device 20 determines that a single operation has been performed when the operation of another operation tool is not recognized during the period from the start of operation to the end of operation of one operation tool. It may be determined that a compound operation has been performed when an operation of another operation tool is recognized immediately. According to this, it is possible to reliably distinguish between a single operation and a compound operation.
In addition, the control device 20 determines that a single operation has been performed when the operation of another operation tool is not recognized within a certain period of time from the start of operation of one operation tool, and It may be determined that a compound operation has been performed when an operation of another operation tool is recognized before the elapse of time. According to this, when operating another operating tool, it is not necessary to hold the previous operation, and the operability is good.

In addition, the control device 20 cancels the first information or the second information acquired immediately before, or cancels all of the acquired first information when the number of manipulators exceeding the number of manipulators to be operated in combination is operated. It may have a correction unit 24 that cancels the information and the second information. According to this, it is not necessary to separately provide a cancel button for canceling the input first information and second information.
Further, the input device 40 may have four operating tools, and the four operating tools may be capable of inputting multi-digit first authentication information composed of a combination of numbers from 0 to 9. .

According to this, numbers from 0 to 9 can be input with four operation tools, and the input device 40 can be formed compactly.
Although the present invention has been described above, it should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

5 Prime mover 20 Control device 21 Storage unit 23 Authentication unit 24 Correction unit 25 Acquisition unit 26 Information generation unit 40 Input device (keypad)
41a Single operating tool 41b Compound operating tool 41c Single operating tool 41d Compound operating tool 41e Compound operating tool 41f Compound operating tool 41g Compound operating tool 41h Single operating tool 41i Compound operating tool 41j Single operating tool 42a Single operating tool 42b Compound operating tool 42c Single Operating tool 42d Single operating tool 42e Combined operating tool 42f Single operating tool 43a Operating tool 43b Operating tool 43c Operating tool 43d Operating tool 44a Switch (first switch)
44b switch (second switch)
44c switch (third switch)
44d switch (fourth switch)

Claims (7)

a prime mover;
an input device for inputting first authentication information including at least one of first information and second information;
An acquisition unit that acquires the first authentication information input to the input device, a storage unit that stores the second authentication information in advance, and the first authentication information and the second authentication information are collated to establish the collation. a control device having an authentication unit that permits driving of the prime mover when
with
The input device is
a plurality of switches;
a single operation tool for independently operating one of the plurality of switches to input first information;
a compound operating tool for compoundly operating at least two of the plurality of switches to input second information;
The single operation tool presses the switch in the operation direction of the single operation tool, and overlaps one of the plurality of switches so as to overlap in the operation direction of the single operation tool. provided,
The compound operating tool presses the switch in the operation direction of the compound operating tool, and includes a switch pressed by one single operating tool among the plurality of single operating tools, and the plurality of single operating tools. A working machine that overlaps a switch pressed by another single operating tool among tools so as to overlap in the operating direction of the combined operating tool. The working machine according to claim 1 , wherein the compound operation tool is provided between the single operation tools and straddles at least two adjacent switches among the plurality of switches. The control device cancels the first information or the second information acquired immediately before the operation of the number of switches exceeding the number of the switches to be operated in combination, or cancels all of the acquired first information and the second information. 3. The working machine according to claim 1 , further comprising a correction section for canceling information. a prime mover;
an input device having four operating tools;
Selectively operating any one operating tool out of the four operating tools and operating any two operating tools out of the four operating tools with the first information input by four single operations. an information generation unit for generating first authentication information based on second information input by six types of compound operations, which are compound operations and operations of all combinations of two operation tools; and second authentication information in advance. and an authentication unit that compares the first authentication information and the second authentication information and permits driving of the engine when the matching is established;
machine with The control device determines that a single operation has been performed when no operation of another operation tool is recognized during the period from the start of operation to the end of operation of one operation tool, and 5. The working machine according to claim 4 , wherein it is determined that a combined operation has been performed when an operation of another operating tool is recognized immediately. The control device determines that a single operation has been performed when no operation of the other operation tool is recognized within a certain period of time from the start of operation of one operation tool, and a predetermined time has passed since the start of operation of the one operation tool. 5. The work machine according to claim 4 , wherein it is determined that a compound operation has been performed when an operation of another operation tool is recognized until later. The control device cancels the first information or the second information acquired immediately before, or cancels all the acquired first information when the number of manipulators exceeding the number of the manipulators to be operated in combination is operated. and a correction unit that cancels the second information.

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