JPH0379227B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage device for a side stand in a motorcycle, and more particularly to a device for automatically storing a side stand during riding.

When riding a motorcycle, it is necessary to keep the side stand in the stowed position.

In view of the above, an object of the present invention is to provide a side stand storage device for a motorcycle, which simplifies the storage operation of the side stand by automatically collapsing the side stand to the storage position when the motorcycle starts and reaches a certain running state. It is to be.

In order to achieve the above object, the present invention includes a first detection circuit that detects an upright state of a side stand that is raised/retracted by an operation based on the intention of an occupant;
A second detection circuit detects the running state of the motorcycle, a standing position detection signal from the first detection circuit that indicates that the side stand is in the upright state, and a second detection signal that indicates that the motorcycle has reached a predetermined running state after starting. a storage command signal sending circuit that sends out a storage command signal to store the side stand by receiving the driving state detection signal from the second detection circuit; and a drive circuit that stores the side stand in response to the storage command signal from the storage command signal transmission circuit. The side stand storage device for a motorcycle consists of:

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a side view of a motorcycle to which an embodiment of the present invention is applied, and FIG. 2 is an overall circuit diagram of the side stand storage device. In FIG. 1, reference numeral 10 is a cradle type main frame, and 12 is a down tube. The rear part of the down tube 12 is a seat pillar 14 bent upward. 16 is the engine, 1
8 is a rear wheel held by the rear arm 20;
2 is a front wheel held by a front fork 24, 26 is a fuel tank, and 28 is a seat.

Next, 30 is a side stand. The side stand 30 is rotatably pivoted to a bracket 32 fixed to the down tube 12, and is stopped in an upright position and a retracted position (imaginary line position) by a coil spring (not shown). Incidentally, a side stand storing/erecting motor and an electromagnetic clutch (not shown) are attached to this bracket 32.

34 is a storage position detection switch fixed to the bracket 32. This storage position detection switch 3
4 comes into contact with the side stand 30 in the storage position of the side stand 30. This contact causes the storage position detection switch 34 to close. 36 is a standing position detection switch fixed to the bracket 32. The upright position detection switch 36 contacts the side stand 30 when the side stand 30 is in the upright position. This contact causes the standing position detection switch 36 to close.

A speed sensor 38 detects the rotational speed of the front wheel 22 and is installed within the tachometer 39. This speed sensor 38 is designed to generate an electric pulse train corresponding to the amount of rotation of the front wheel 22. It should be noted that a storage/erase operation switch, which is operated to store or raise the side stand 30, is provided on the right handle (not shown).

In FIG. 2, 40 is a microcomputer. This microcomputer 40 is the first to
a fifth input terminal 42, 44, 46, 48, 48';
It has first to fourth output terminals 50, 52, 54, and 56, respectively. This microcomputer 40 is provided at the bottom of the seat 28 in FIG. In the microcomputer 40, a speed sensor 38 is connected to its first input terminal 42, a storage position detection switch 34 is connected to its second input terminal 44, and a third input terminal 46 is connected to it.
A stand-up position detection switch 36 is connected to the switch 36, and its fourth and fifth input terminals 48, 48' are connected to the storage/stand-up operation position side and the stand-up operation position side of the storage/stand-up operation switch 58, respectively. The speed sensor 38 is composed of a rotating magnet 382 having north and south poles arranged alternately, and a reed switch 384. This speed sensor 38 is configured so that a reed switch 384 is opened and closed by the rotation of a rotary magnet 382 together with the rotation of the front wheel 22. Note that 60 is a right-hand drive.

Further, in the microcomputer 40, the first output terminal 50 is connected to a side stand storage motor 6 for driving the side stand 30 in the direction of the storage position.
2 is connected, an electronic ignition device 64 is connected to its second output terminal 52, and its third output terminal 54 is connected to
An electromagnetic clutch 68 is connected to the fourth output terminal 56 of the electromagnetic clutch 68, and a side stand raising motor 70 for driving the side stand 30 toward the upright position is connected to its fourth output terminal 56. Here, the electromagnetic clutch 68 has a driving part connected to the rotating shafts of both the motors 62 and 70;
It consists of a driven part connected to the rotating shaft of the side stand 30. In addition, both the motors 62, 7
0 is composed of one forward/reverse motor, but for convenience of explanation, it is shown divided into two.

First, the case where the motorcycle is started with the side stand 30 erected in the circuit shown in FIG. 2 having the above configuration will be described first. In this case, a standing position detection signal from the closed standing position detection switch 36 of the side stand 30 is inputted to the microcomputer 40 via the third input terminal 46. On the other hand, after the motorcycle has started, when a running state detection signal from the speed sensor 38 indicating that the motorcycle is in a predetermined running state is input to the microcomputer 40 via the first input terminal 42, the microcomputer 40 , a side stand storage command signal is sent from the first output terminal 50 based on the standing position detection signal and the driving state detection signal, while the third
An electromagnetic clutch actuation command signal is sent from the output terminal 54. By sending these command signals, the side stand storage motor 62 rotates and the electromagnetic clutch 68 is connected, whereby the side stand 30 is rotated toward the storage position. In this way, the side stand 30 is automatically retracted.
Next, a case in which the side stand 30 is raised and lowered by the storage/erase operation switch 58 will be described. First, the switch 58 is switched from the neutral position to, for example, the standing operation position. Then, a standing operation signal for setting the side stand 30 to the standing position is input to the microcomputer 40 via the fifth input terminal 48'. microcomputer 40
In response to this raising operation signal, a side stand raising command signal is sent to the side stand raising motor 70 through the fourth output terminal 56, and an electromagnetic clutch actuation command signal is sent through the third output terminal 54. By sending these command signals, the side stand raising motor 70 rotates and the electromagnetic clutch 68 is connected, whereby the side stand 30 is raised toward the upright position. On the other hand, when the storage/erase operation switch 58 is switched from the neutral position to the storage operation position, the side stand storage motor 62 and the electromagnetic clutch 68 operate, contrary to the above, and the side stand 30 is tilted toward the storage position. In addition, the microcomputer 40 detects that the motorcycle starts with the side stand 30 up, and even though the motorcycle reaches the predetermined running state, the side stand storage device does not operate or is unable to operate, and the side stand is turned off. 30 is not in the storage position, a misfire command signal is sent to the electronic ignition device 64 via the second output terminal 52 to stop the motorcycle from running.

Next, the above-mentioned operation of the microcomputer 40 will be explained in more detail with reference to FIG.

FIG. 3 is a specific circuit diagram of the microcomputer 40 shown in FIG. In FIG. 3, reference numeral 72
is a waveform shaping circuit that shapes the waveform of the electric pulse from the speed sensor 38 that is input via the first input terminal 42 . This waveform shaping circuit 72 sends out a signal corresponding to the amount of rotation of the front wheel 22, that is, a distance signal. Reference numeral 74 is a speed calculation circuit that calculates the running speed of the motorcycle based on the reference time signal from the reference time generation circuit 76 and the distance signal, and sends out a speed signal. 78 compares the speed signal with the first reference comparison signal from the first reference comparison value input circuit 80, and in the comparison, sends a first speed signal indicating that the motorcycle has reached the first speed after starting. This is a first speed comparison circuit. 80 compares the speed signal with a second reference comparison signal from the second reference comparison value input circuit 82, and in the comparison, determines whether the motorcycle has started at a second speed (however, it is greater than the first speed). , the relationship with the first speed will be described later). A third speed comparison circuit 86 compares the speed signal with a third reference comparison signal from a third reference comparison value input circuit 88, and upon the comparison, sends out a third speed signal indicating that the motorcycle has stopped. 90 is a first distance counter that counts the distance signal and sends out a first distance signal when the first count value is reached; 92 is a second distance counter that counts the distance signal and sends out a second distance signal that is larger than the first count value; When the count value is reached, the second distance signal (first
The relationship with the distance signal will be described later. ) is the second distance counter. In addition, 94,9
6, 98 and 100 are first to fourth input interfaces, respectively, and 102 and 104 are first and second chattering prevention circuits, respectively. Also, 1
06, 108, and 110 are first to third OR circuits, 112, 114, 116, and 118 are first to fourth AND circuits, respectively, and 120 is a delay circuit.

Next, the operation will be explained.

First, a case in which the motorcycle starts with the side stand 30 upright will be described.
In this case, since the storage position detection switch 34 is open, the storage position detection signal inputted into the microcomputer 40 via the second input terminal 44 is a low level signal that is output to the first input interface 94 and 1 Chattering prevention circuit 1
02, the signal is inputted to a second input section which is a signal inversion input section of the second AND circuit 114 and a third input section which is a signal inversion input section of the third AND circuit 116. On the other hand, a number of electrical pulses proportional to the amount of rotation of the front wheels from the speed sensor 38 are sent to the waveform shaping circuit 72 in the microcomputer 40 via the first input terminal 42.
The waveform is shaped by the speed calculation circuit 74 and the first and second distance counters 90 and 92 as a distance signal.
is input. The distance signal inputted to the speed calculation circuit 74 is converted into a speed signal in the speed calculation circuit 74, and then inputted to the first to third speed comparison circuits 78, 82, and 86, respectively. By the way, when the motorcycle reaches the first speed after starting, the speed signal is sent from the first speed comparison circuit 78 as the first speed signal to the first OR circuit 10.
6 to the first input section of the second AND circuit 114. In this way, the second AND circuit 1
14, a high-level first speed signal is input to its first input section, while a low-level signal is input to its second input section, which is a signal inversion input section, that is, the side stand 30 is not stored. A storage position detection signal will be input. Therefore, a high level signal is output from the output section of the second AND circuit 114. This high-level signal is input to the side stand storage motor 62 via the first output terminal 50 as a side stand storage command signal, and is also input to the side stand storage motor 62 via the third OR circuit 110 and the third output terminal 54 as an electromagnetic clutch operation command signal. The signal is input to the electromagnetic clutch 68 as a signal.
As a result, the side stand 30 is connected to the electromagnetic clutch 6.
The storage drive force from the side stand storage motor 62 transmitted through the side stand storage motor 8 causes the side stand to be tilted toward the storage position. Note that when the motorcycle has traveled a first distance after starting, the first distance signal from the first distance counter 90 is sent to the first input portion of the second AND circuit 114 via the first OR circuit 106 as a high-level signal. Therefore, after the motorcycle starts, the side stand 30 is automatically tilted in the storage direction when the motorcycle reaches the first speed or travels the first distance. However, even though the side stand storage command signal and the electromagnetic clutch activation command signal are input to the side stand storage motor 62 and the electromagnetic clutch 68 as described above, if the side stand 30 is not stored and is still in the upright position, A motorcycle stops as follows. In other words, when the motorcycle reaches the first speed or travels the first distance after starting, and then reaches the second speed or travels the second distance while the side stand 30 remains in the upright position, the motorcycle reaches the second speed or travels the second distance. Either the second speed signal from the comparison circuit 82 or the second distance signal from the second distance counter 92 is input as a high level signal to the second input part of the third AND circuit 116 via the second OR circuit 108. be done. Then, the third AND circuit 11
6, the second AND circuit 1 is connected to its first input.
A high-level signal from the signal delay circuit 120 from 14 is inputted, a high-level second speed signal or a second distance signal is inputted to its second input, and a low-level signal is inputted to its third input. It will be entered. Therefore, the third AND circuit 1
A high level signal, that is, a misfire command signal, is input from the output section 16 to the electronic ignition device 64 via the second output terminal 52, thereby stopping the motorcycle. Note that the high-level signal from the second AND circuit 114 is time-delayed by the signal delay circuit 120 and then input to the first input section of the third AND circuit 116. This is because a certain amount of time is required for the side stand to fall to the stowed position after the side stand storage command signal is output.
Therefore, it is not appropriate to immediately output a misfire command signal based on a low-level stowed position detection signal indicating that the side stand is not stowed. In addition, there are full transistor type or CDI type electronic ignition devices,
Either cause these charge coils or thyristors to misfire by grounding them with a misfire command signal, or
Alternatively, by closing the injector of the fuel injection device in response to a misfire command signal, a misfire can be caused and the motorcycle can be stopped. In this way,
When the motorcycle stops, the third speed comparison circuit 86
A third speed signal, that is, a stop speed signal, is inputted to the reset terminals of the first and second distance counters 90, 92, thereby causing the first and second distance counters 90,
92 is reset to prepare for the next automatic storage operation of the side stand.

Next, the storage/erase operation switch 58 will be explained. First, a case will be described in which, when the motorcycle is stopped with the side stand 30 erected, the motorcycle is started by tilting the side stand 30 to the stowed position. First, the storage/erase operation switch 58 is switched from the neutral position to the storage position. Then, the side stand storage operation signal is input to the third input interface 98 in the microcomputer 40 via the fourth input terminal 48, and further to the first input section of the second AND circuit 114 via the first OR circuit 106. Input as a high level signal. At this time, the storage position detection switch 34 outputs the second input terminal 44, the first input interface 94, and the first chattering prevention circuit 10.
A low level storage position detection signal is sent to the second
It is input to the second input section of the AND circuit 114. Therefore, a high level signal, that is, a side stand storage command signal, is input from the second AND circuit 114 to the side stand storage motor 62 via the first output terminal 50, and at the same time, the electromagnetic clutch operation command signal is input to the third output terminal 50. The signal is input to the electromagnetic clutch 68 via the output terminal 54. As a result, the side stand 30 is brought down to the storage position.

Next, a case will be described in which the side stand 30 is raised when the side stand 30 is in the storage position. In this case, from the standing position detection switch 36, the third input terminal 46, the second input interface 96, the second tearing prevention circuit 1
A low-level standing position detection signal is input to the first input section, which is a signal inversion input section, of the fourth AND circuit 118 via the fourth AND circuit 04. On the other hand, side stand 3
0, it is necessary to stop the motorcycle, so a high-level third speed signal indicating that the motorcycle has stopped is sent from the third speed comparison circuit 86 to the first input section of the first AND circuit 112. is input. Then, the storage/stand-up operation switch 58
When the switch is switched from the neutral position to the standing position, the standing position operation signal is sent to the first AND circuit 1 via the fifth input terminal 48' and the fourth input interface 100.
The signal is input to the second input section No. 12 as a high level signal. In this way, the first AND circuit 112
The third speed signal and the standing position operation signal, both of which are at high level, are input to both input sections. As a result, a high level signal is output from the output section of the first AND circuit 112 to the second input section of the fourth AND circuit 118. Then, a low level signal will be input to the first input section which is the signal inversion input section of the fourth AND circuit 118, and a high level signal will be input to the second input section thereof.
A high-level signal, that is, a side stand raising command signal and an electromagnetic clutch actuation command signal, are output from the output section of the fourth AND circuit 118 to the side stand raising motor 70 via the fourth output terminal 56 and the third output terminal 54, respectively. It is output to the electromagnetic clutch 68. As a result, the side stand 30 is erected. In this way, the side stand 30 can be stowed or raised by switching the stow/rise operation switch 58 to the stow operation side or the rise operation side.

As explained above, according to the present invention, by receiving the standing position detection signal indicating that the side stand is in the upright state and the running state detection signal indicating that the motorcycle has reached a predetermined running state after starting, It has a storage command signal sending circuit that sends out a storage command signal to store the side stand, and a drive circuit that flips the side stand to the storage position based on the storage command signal from the storage command signal sending circuit, so the side stand can be automatically moved while the side stand is upright. When the motorcycle starts, the drive circuit is activated by the stow command signal from the stow command signal sending circuit, and the side stand is automatically folded to the stowed position, making it easy to operate without forgetting to stow it. become.

[Brief explanation of drawings]

The figure relates to one embodiment of this invention,
Fig. 1 is a side view of a motorcycle to which an embodiment of the present invention is applied, Fig. 2 is an overall circuit diagram of its side stand storage device, and Fig. 3 is a detailed circuit diagram of a microcomputer in the circuit. be. 30... Side stand, 34... Storage position detection switch, 36... Standing position detection switch, 3
8...Speed sensor, 40...Microcomputer, 58...Storage/erase operation switch, 62...
Motor for storing side stand, 68... Electromagnetic clutch, 70... Motor for raising side stand.

Claims (1)

[Claims] 1 A first detection circuit that detects the upright state of the side stand that is raised/retracted by an operation based on the rider's intention, and a second detection circuit that detects the running state of the motorcycle.
a detection circuit, a standing position detection signal from the first detection circuit indicating that the side stand is in the upright state, and a running state detection signal from the second detection circuit indicating that the motorcycle has reached a predetermined running state after starting. A motorcycle comprising: a storage command signal sending circuit that sends out a storage command signal to store the side stand in response to a storage command signal; and a drive circuit that stores the side stand in response to a storage command signal from the storage command signal transmission circuit. Side stand storage device.