JP2005132219A - Entanglement prevention device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an entanglement prevention device capable of preventing a pedestrian or the like from being entangled with the front wheel of a vehicle. <P>SOLUTION: The prevention device is equipped with arms 7, 8 pivoted on a base 3 of the lower side of a cab 1 so that their tips can oscillate between a position near the front vehicle side of the front wheel and an upper position near the body center, a guard 11 which is mounted to the tips of the arms 7, 8 and can be projected to the cab 1 side when the arms 7, 8 are biased to the vehicle side, a motor 12 oscillating the arm7, and a control means 23 actuating the motor 12 based on the presence of the actuation of a turn signal and the steering angle of the front wheel. When the vehicle is turned to the left or to the right, the arms 7, 8 are oscillated by the motor 12, and the guard 11 mounted to the tips is flicked toward the front of the front wheel steered to an outward steering position so that an object on the road surface G is prevented from being entangled with the front wheel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an entrainment prevention device.

  In vehicles where the lower side of the vehicle is not covered with a body panel such as a truck or trailer, plate-like, sword-like, net-like, or rod-like side guards are provided between the front and rear wheels, It prevents pedestrians and motorcycle riders from getting caught in the rear wheels.

Moreover, there is an entrainment prevention device for ensuring the safety of a person or an object located on the rear side of the vehicle when the vehicle moves backward (see, for example, Patent Document 1).
JP-A-8-142782

  However, no means has been proposed so far that can prevent pedestrians from being caught by the front wheels of the vehicle.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a wrapping prevention device suitable for a front wheel.

  In order to achieve the above-mentioned object, the invention according to claim 1 is pivotally supported on the auxiliary member of the body so that the tip end portion can swing between a position closer to the vehicle side in front of the wheel and an upper position closer to the center of the body. Linkage, a guard that is attached to the front end of the linkage and can protrude toward the body when the linkage is biased toward the vehicle side, an actuator that swings the linkage, whether or not the turn signal is activated, and the wheel Control means for operating the actuator based on the steering angle.

  The invention according to claim 2 is a linkage pivotally supported on an accessory member of the body so that the tip portion can swing between a position near the vehicle side in front of the wheel and an upper position near the center of the body, A guard that is attached to the tip and can project to the side of the body when the linkage is biased toward the vehicle side, a motor that swings the linkage, a motor that operates based on whether a turn signal is activated, and the motor And a control means for interrupting power supply according to the temperature state.

  The invention according to claim 3 is a linkage pivotally supported on an accessory member of the body so that the tip portion can swing between a position near the vehicle side in front of the wheel and an upper position near the center of the body, A guard that is attached to the front end portion and can protrude to the side of the body when the linkage is biased toward the vehicle side, a motor that swings the linkage, and a motor that operates based on whether or not a turn signal is activated, and driving the motor And control means for interrupting power supply in accordance with the current.

  According to the first aspect of the present invention, when the turn signal is activated, the control means activates the actuator, and swings the guard at the tip end portion of the linkage to the forward steering position according to the steering angle. Prevents objects on the road from getting caught.

  Further, following the return of the wheel to the neutral position, the control means operates the actuator, and retracts the guard at the distal end portion of the linkage toward the center of the body and stores it.

  In either of the inventions according to claim 2 or claim 3, when the turn signal is activated, the control means activates the motor and swings the guard at the tip end portion of the linkage to the forward steering position to the front of the wheel. Prevents objects on the road from getting caught.

  Further, following the return of the wheel to the neutral position, the control means operates the motor to retract the guard at the distal end portion of the linkage toward the center of the body and store it.

  In particular, in the invention described in claim 2, when the motor is excessively heated, the power supply to the motor is interrupted by the control means, and the guard stops.

  In particular, in the invention described in claim 3, when the driving current of the motor becomes excessive, the power supply to the motor is interrupted by the control means, and the guard stops.

  (1) In the first aspect of the invention, since the guard is swung out forward of the wheel according to the steering angle, it is possible to prevent the object on the road surface from being caught by the wheel when the vehicle turns left or right.

  (2) In the invention described in claim 2, since the guard is stopped when the motor is excessively heated, the object sandwiched between the guard and the road surface is not excessively damaged and damage such as linkage is avoided. can do.

  (3) In the invention described in claim 3, since the guard is stopped when the drive current becomes excessive, the object sandwiched between the guard and the road surface is not excessively damaged, and damage such as linkage is avoided. can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1 to 5 show a first example of an embodiment of an entanglement preventing device according to the present invention. The entanglement preventing device is a base 3 provided at the lower part of a step 2 on the left and right sides of a cab 1. And the front end side of the front wheel 4 that is aligned in the vehicle width direction (see the lower side of FIG. 1 and the lower side of FIG. 2) and the upper position near the center of the cab 1 (upper side of FIG. 1, FIG. A pair of arms 7 and 8 pivotally supported on the base 3 by pins 5 and 6 so that the base end portion can swing between the upper and lower edges), and the tip end portions of the arms 7 and 8 on the upper edge portion. A guard 11 pivotally supported by pins 9 and 10, a motor 12 that swings one arm 7, a control means 23 (see FIG. 4) of the motor 12, and the like.

  The distance between the pins 5 and 6 and the distance between the pins 9 and 10 are set equal. The distance between the pins 5 and 9 and the distance between the pins 6 and 10 are also set equal. A parallelogram link having the base 3 as a fixed node is formed.

  The outer shape of the guard 11 is such that when the distal end portions of the arms 7 and 8 are close to the road surface G, the vehicle-side portion protrudes outward from the cab 1, and the distal end portions of the arms 7 and 8 are close to the base 3. In this case, the entirety is set to be located above the lower edge of the bumper 15 and may be any of a plate shape, a lattice shape, a saw shape, or a net shape.

  Further, the postures of the left and right guards 11 are slightly inclined forward so that an object hitting the guard 11 can be pushed away to the side of the vehicle.

  The control means 23 includes a cancel switch 24 for transmitting a signal by a driver's manual operation, a vehicle speed sensor 25 for transmitting a signal corresponding to the traveling speed, and a steering sensor 26 for transmitting a signal corresponding to the steering angle of the front wheels 4. The standby lamp 29 is lit on the basis of the rotation angle sensor 27 provided in the motor 12, the signals from these switches 24, sensors 25, 26 and 27, and the blinking command signal from the turn signal switch 28, and the motor. 12 and an arithmetic unit 31 for operating the buzzer 30.

  The switches 24 and 28, the standby lamp 29, the buzzer 30, and the arithmetic unit 31 are installed inside the cab 1.

  Arithmetic unit 31 includes step S1 (setting of cancel switch 24), step S2 (presence / absence of flashing signal of turn signal switch 28), step S3 (contrast of preset speed range and detection value of vehicle speed sensor 25), The determination is made in the order of step S4 (the presence / absence of drive current to the motor 12 and the detected value of the rotation angle sensor 27) and step S5 (confirmation of storing of the guard 11 based on the detection value of the rotation angle sensor 27) (FIG. 5).

  If it is determined in step S1 that the cancel switch 24 is ON, the standby lamp 29 is turned off, and the motor 12 does not operate even if a blink signal is transmitted from the turn signal switch 28.

  When it is determined in step S1 that the cancel switch 24 is OFF, the standby lamp 29 is turned on, and in step S2, it is determined that the turn signal switch 28 is transmitting a blinking signal, and step S3. When it is determined that the detected value of the vehicle speed sensor 25 is in the range of 5 to 15 km / h, the arithmetic unit 31 operates the motor 12 based on the signal from the steering sensor 26 and the signal from the rotation angle sensor 27.

  That is, when the vehicle turns left or right, if the cancel switch 24 is OFF and the turn signal switch 28 is operated and the vehicle speed is slow or slightly higher, the motor 12 below the step 2 in the direction in which the vehicle travels is The arms 7 and 8 are rotated so that their tip portions are close to the road surface G and biased toward the vehicle side.

  Thereby, the guard 11 is swung out to the outside of the cab 1 according to the steering angle of the front wheel 4, and the object on the road surface G by the front wheel 4 can be suppressed.

  Thereafter, when the front wheel 4 starts to return to the neutral position, the motor 12 operates in the opposite direction, and the guard 11 is pulled toward the center of the cab 1 while being raised to the vicinity of the base 3 and the rear side of the bumper 15 Stored in

  The operation of the motor 12 at this time may be such that the guard 11 moves stepwise corresponding to the turning of the front wheel 4 or may move continuously.

  If power is not supplied to the motor 12 and the signal from the rotation angle sensor 27 is not changed in step S4, it is determined that the guard 11 has moved according to the steering angle of the front wheel 4, and the next determination is made. Returns to step S1 (when the guard 11 is moving, power is supplied and the signal fluctuates).

  In step S4, when power is supplied to the motor 12 and no change is observed in the signal from the rotation angle sensor 27, an object is placed between the guard 11 and the road surface G or between the guard 11 and the cab 1. It is determined that the motor 12 has been caught, the buzzer 30 sounds and notifies the driver of the occurrence of an abnormality, and the power supply to the motor 12 is interrupted so that the guard 11 maintains the current state.

  In step S4, when the signal from the rotation angle sensor 27 fluctuates even though there is no power supply to the motor 12, it is determined that the guard 11 is pushed toward the center of the cab 1 due to the contact of the object, and the buzzer 30 And the driver is notified of the occurrence of an abnormality, power is supplied to the motor 12, and the guard 11 moves to the retracted position.

  Furthermore, if it is determined in step S5 that the guard 11 has returned to the origin (storage position) based on the signal from the rotation angle sensor 27, the next determination returns to step S1.

  Further, when it is determined in step S5 that the guard 11 has not returned to the origin, power supply to the motor 12 is interrupted.

  As described above, in the wrapping prevention device shown in FIGS. 1 to 5, in addition to suppressing the entanglement of the object on the road surface G by the front wheels 4, the object is in contact with the guard 11, or the guard 11 is The driver can be notified that the is caught.

  6 and 7 show a second example of the embodiment of the wrapping prevention apparatus according to the present invention. The parts denoted by the same reference numerals as those in FIGS. 1 to 4 described above represent the same items. ing.

  This entrainment prevention device includes stoppers 32 and 33 and a control means 34.

  The stopper 32 is provided on the lower side of the step 2 so as to come into contact with the arm 8 rotated to a position where the guard 11 side of the guard 11 is swung out of the cab 1.

  The stopper 33 is provided below the step 2 so that the entire guard 11 contacts the arm 7 rotated to a position where it is stored above the lower edge of the bumper 15.

  In addition to the cancel switch 24, the vehicle speed sensor 25, the steering sensor 26, the rotation angle sensor 27, the standby lamp 29, and the buzzer 30, the control means 34 includes a temperature sensor 35 that measures the temperature of the motor 12, and these switches. 24, an arithmetic unit 36 for turning on the standby lamp 29 and operating the motor 12 and the buzzer 30 based on the signals from the sensors 25, 26, 27, and 35 and the signal from the turn signal switch 28.

  That is, when the vehicle turns left or right, if the cancel switch 24 is OFF and the turn signal switch 28 is operated and the vehicle speed is slow or slightly higher than that, the guard is similar to that shown in FIGS. 11 is swung out to the outside of the cab 1 according to the steering angle of the front wheel 4 to prevent the object on the road surface G from being caught by the front wheel 4.

  Thereafter, when the front wheel 4 starts to return to the neutral position, the motor 12 operates in the opposite direction, and the guard 11 is pulled toward the center of the cab 1 while being raised to the vicinity of the base 3 and the rear side of the bumper 15 Stored in

  Furthermore, the arithmetic unit 36 determines, based on the signal from the temperature sensor 35, whether or not the guard 11 is not moving even though power is supplied to the motor 12.

  That is, if the moving guard 11 pinches an object and cannot move, or even if the arms 7 and 8 are in contact with the stoppers 32 and 33 and the power supply to the motor 12 continues, the coil of the motor 12 excessively increases in temperature. .

  As a result, it is determined that the guard 11 has stopped, and power supply to the motor 12 is interrupted.

  The functions of the arithmetic unit 36 other than those described above are the same as those of the arithmetic unit 31 described above.

  As described above, in the entanglement preventing device shown in FIGS. 6 and 7, in addition to suppressing the entanglement of the object on the road surface G by the front wheels 4, it is possible to avoid burning of the motor 12.

  8 and 9 show a third example of the embodiment of the wrapping prevention apparatus according to the present invention, and the same reference numerals as those in FIGS. 1 to 4, 6 and 7 described above are attached. The parts represent the same thing.

  This entrainment prevention device includes a control means 37.

  The control means 37 includes the cancel switch 24, the vehicle speed sensor 25, the steering sensor 26, the rotation angle sensor 27, the standby lamp 29, and the buzzer 30, signals from these switches 24, sensors 25, 26 and 27, and turns. Based on a signal from the signal switch 28, the standby lamp 29 is turned on and the motor 12 and the buzzer 30 are operated.

  Further, the arithmetic unit 38 constantly monitors the current value of the motor 12 to determine whether or not the guard 11 is not moving even though power is supplied to the motor 12.

  In other words, if the moving guard 11 pinches an object and cannot move, or if the power supply to the motor 12 continues even if the arms 7 and 8 are in contact with the stoppers 32 and 33, the current value of the motor 12 becomes excessive.

  Thereby, it is determined that the guard 11 has stopped, and power supply to the motor 12 is interrupted.

  The functions of the arithmetic unit 38 other than the above items are the same as those of the arithmetic unit 31 described above.

  As described above, in the entanglement preventing device shown in FIGS. 8 and 9, in addition to suppressing the entanglement of the object on the road surface G by the front wheels 4, it is possible to avoid burning of the motor 12.

  Note that the entrainment prevention device of the present invention is not limited to the above-described embodiment, and it is needless to say that changes can be made without departing from the scope of the present invention.

  The entrainment prevention device of the present invention can be applied to various vehicle types.

It is the conceptual diagram which looked at the 1st example of embodiment of the entrainment prevention apparatus of this invention from back. It is the conceptual diagram which looked at the movement state of the guard relevant to FIG. 1 planarly. It is a fragmentary perspective view of the vehicle (truck) relevant to FIG. It is a block diagram of the control means used for the entrainment prevention apparatus shown in FIG. It is a flowchart figure of the control means shown in FIG. It is the conceptual diagram which looked at the 2nd example of embodiment of the entrainment prevention apparatus of this invention from back. It is a block diagram of the control means used for the entrainment prevention apparatus shown in FIG. It is the conceptual diagram which looked at the 3rd example of embodiment of the entrainment prevention apparatus of this invention from back. It is a block diagram of the control means used for the entrainment prevention apparatus shown in FIG.

Explanation of symbols

1 Cab (body)
3 Base (Attached member)
4 Front wheels
7 Arm (linkage)
8 Arm (linkage)
11 Guard 12 Motor (actuator)
23 control means 34 control means 37 control means

Claims (3)

  A linkage pivotally supported on an accessory member of the body so that the tip portion can swing between a position near the vehicle side in front of the wheel and an upper position near the center of the body, and the linkage is attached to the tip portion of the linkage and the linkage is attached to the vehicle. A guard that can protrude to the side of the body when biased to the side, an actuator that swings the linkage, and a control means that operates the actuator based on the presence or absence of the turn signal and the steering angle of the wheel. An entrainment prevention device characterized by.   A linkage pivotally supported on an accessory member of the body so that the tip portion can swing between a position near the vehicle side in front of the wheel and an upper position near the center of the body, and the linkage is attached to the tip portion of the linkage and the linkage is attached to the vehicle. A guard that can protrude to the side of the body when biased to the side, a motor that swings the linkage, a motor that operates based on the presence or absence of a turn signal operation, and power supply is interrupted according to the temperature rise state of the motor An entanglement preventing device comprising a control means.   A linkage pivotally supported by an accessory member of the body so that the tip portion can swing between a position near the vehicle side in front of the wheel and an upper position near the center of the body, and the linkage is attached to the tip portion of the linkage and the linkage is attached to the vehicle. A guard that can protrude to the side of the body when biased to the side, a motor that swings the linkage, and a control that activates the motor based on the presence or absence of a turn signal and interrupts power supply according to the drive current of the motor Means for preventing entanglement.

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