JP2006076426A - Entrainment preventing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an entrainment preventing device suitable to front wheels of a vehicle since a means capable of suppressing entrainment of a pedestrian, etc., due to the front wheels has not been suggested. <P>SOLUTION: This device is provided with arms 16 and 17 pivotally attached to a base 13 so that distal end parts may be oscillated between a position close to the vehicle side in front of the wheels and an upper position close to the cab center, a cross bar 20 fitted at the distal end parts of the arms 16 and 17 to be extended in the vehicle width direction, and a guard 21 which can be suspended from the cross bar 20 and swung up to the front to be projected to the cab side when the arms 16 and 17 deviate close to the vehicle side. At the time of a left turn or a right turn of the vehicle, the arms 16 and 17 are oscillated, and the guard 21 suspended from the cross bar 20 is swung out to the front of the wheels converted to outward steering positions. When the cab is inclined to the front, the guard 21 is abutted on the wheels and is pressed and stopped, but an oscillating mechanism of the guard 21 constituted of the cross bar 20, the arms 16 and 17 and the base 13 is tilted together with the cab. <P>COPYRIGHT: (C)2006,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 object, the present invention provides a linkage provided on the lower side of the cab 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 cab, A guard is provided that hangs down from the linkage so as to protrude toward the cab when biased toward the vehicle side and can be swung forward.

  Further, an actuator for swinging the linkage and a control means for operating the actuator based on the presence / absence of the turn signal and the steering angle of the wheel are provided.

  That is, by displacing the linkage toward the vehicle side, the guard is swung out in front of the wheel turned to the outward steering position.

  When the actuator and the control means are provided, when the turn signal is activated, the control means activates the actuator and swings the guard forward of the wheel turned to the outward steering position.

  Further, when the cab is tilted forward, if the guard hanging from the linkage comes into contact with the wheel, the guard is held down and the linkage continues to tilt with the cab.

  According to the entrainment prevention device of the present invention, the following excellent effects can be obtained.

  (1) Since the guard is swung forward in front of the wheel turned to the outward steering position, it is possible to prevent the object on the road from being caught by the wheel when the vehicle turns left or right.

  (2) When the guard comes into contact with the wheel when the cab is tilted forward, the linkage keeps tilting together with the cab separately from the guard, so damage to the guard and the linkage can be avoided, and the utility as a vehicle equipment is high.

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

  FIG. 1 to FIG. 6 show an example of an embodiment of the entanglement preventing device of the present invention. The base 13 is assembled below the step 12 (see FIG. 4) on the left and right sides of the cab 11 and arranged in the vehicle width direction. A pair of arms 16 and 17 pivotally supported on the base 13 by pins 14 and 15; a cross bar 20 extending in the vehicle width direction and pivotally supported by pins 18 and 19 on the lower ends of the arms 16 and 17; A guard 21 attached to the vehicle-side end of the cross bar 20, a bracket 22 attached to the vehicle-side arm 16, a motor 23 for biasing the cross bar 20, and its control means 24 are provided. Yes.

  The arms 16 and 17 and the cross bar 20 are obtained by cutting a steel pipe into a predetermined length, and the interval between the pins 14 and 15 is equal to the interval between the pins 18 and 19, and the interval between the pins 14 and 18 and the pin 15 , 19 are equal, and the base 13, the arms 16, 17, and the cross bar 20 form a parallelogram link having the base 13 as a fixed node.

  That is, the cross bar 20 is lowered toward the road surface by the swinging of the arms 16 and 17, is biased toward the vehicle side position indicated by the solid line, and is raised toward the base 13 and indicated by the two-dot chain line. It is biased to a position closer to the center of the cab 11 (see FIG. 1).

  Two holes 25 penetrating from the rear side toward the inside of the crossbar 20 are formed in the end portion closer to the vehicle side of the crossbar 20 so as to be aligned in the vehicle width direction (see FIG. 2).

  The guard 21 is obtained by bending a steel pipe cut to a predetermined length into a spiral shape, and a guide 26 that is slidably inserted into an end portion on the vehicle side of the cross bar 20 is fixed to the end portion outside the spiral. Further, a cap 27 made of synthetic rubber or the like is attached to the end inside the spiral.

  The guide 26 is formed by drilling two slits 28 extending in the circumferential direction in a steel pipe cut into a predetermined length. After the guide 26 is inserted into the end of the cross bar 20 closer to the vehicle, A stopper 29 is driven into 25 to enter the slit 28.

  Accordingly, the guard 21 is allowed to swing from the position (see FIG. 1) depending on the crossbar 20 toward the front (in the direction of arrow A), and from the position depending on the crossbar 20 toward the rear. The swing of the guard 21 is restricted.

  The predetermined part of the cross bar 20 and the spiral intermediate part of the guard 21 are connected via the coil spring 30, and the guard 21 is urged toward a position where it hangs down from the cross bar 20.

  The outer shape of the guard 21 covers the vicinity of the ground contact portion of the front wheel 31 that protrudes outward from the cab 11 and turns to the outward steering position when the cross bar 20 is biased toward the vehicle side. Yes.

  Furthermore, the mounting posture of the base 13 to the cab 11 is such that each of the guards 21 faces obliquely forward when viewed from above so that an object that hits the guard 21 can be pushed away to the side of the vehicle. (See FIG. 3).

  The bracket 22 is pivotally attached to the pins 14 and 18 so as to be able to tilt integrally with the arm 16, and the rotation of the shaft of the motor 23 is a crank (not shown) connecting the crank and the bracket 22. And the guard 23 is moved back and forth between the position closer to the vehicle side indicated by the solid line and the position closer to the center of the cab 11 indicated by the two-dot chain line by the operation of the motor 23 (see FIG. 1).

  The control unit 24 includes a cancel switch 32 that transmits a signal by a driver's manual operation, a vehicle speed sensor 33 that transmits a signal corresponding to the traveling speed, and a steering sensor 34 that transmits a signal corresponding to the steering angle of the front wheels 31. The standby lamp 37 is turned on and the motor 23 is turned on based on the rotation angle sensor 35 provided on the motor 23, the signals from these switches 32, sensors 33, 34, 35, and the blink command signal from the turn signal switch 36. And an arithmetic unit 39 for operating the buzzer 38 (see FIG. 5).

  The switches 32 and 36, the standby lamp 37, the buzzer 38, and the arithmetic unit 39 are installed inside the cab 11.

  The arithmetic unit 39 includes step S1 (setting of the cancel switch 32), step S2 (presence / absence of a blinking signal of the turn signal switch 36), step S3 (contrast between the preset speed range and the detected value of the vehicle speed sensor 33), The determination is made in the order of step S4 (the presence / absence of drive current to the motor 23 and the detected value of the rotation angle sensor 35) and step S5 (confirmation of storing of the guard 21 based on the detection value of the rotation angle sensor 35) (FIG. 6).

  When it is determined in step S1 that the cancel switch 32 is ON, the standby lamp 37 is turned off, and the motor 23 does not operate even if a blink signal is transmitted from the turn signal switch 36.

  When it is determined in step S1 that the cancel switch 32 is OFF, the standby lamp 37 is turned on. Subsequently, in step S2, it is determined that the turn signal switch 36 is transmitting a blinking signal. In step S3, when it is determined that the detected value of the vehicle speed sensor 33 is in the range of 5 to 15 km / h, the arithmetic unit 39 activates the motor 23 based on the signal from the steering sensor 34 and the signal from the rotation angle sensor 35. Operate.

  That is, when the vehicle turns left or right, if the cancel switch 32 is OFF and the turn signal switch 36 is operated and the vehicle speed is slow or slightly higher, the motor 23 below the step 12 in the direction in which the vehicle travels is The arm 16 is rotated, and the cross bar 20 is biased toward the vehicle side while approaching the road surface. As a result, the guard 21 is swung out of the cab 11 according to the steering angle of the front wheel 31, and the front Entrainment of objects on the road surface by the wheels 31 can be suppressed.

  Thereafter, when the front wheel 31 starts to return to the neutral position, the motor 23 operates in the opposite direction, and the guard 21 is pulled toward the center of the cab 11 and is raised to the retracted position near the base 13.

  In step S4, if there is no power supply to the motor 23 and no change is recognized in the signal from the rotation angle sensor 35, it is determined that the guard 21 has moved according to the steering angle of the front wheel 31, and in this case, The next determination returns to step S1 (if the guard 21 is moving, power is supplied and the signal fluctuates).

  If power is being supplied to the motor 23 in step S4 but no change is observed in the signal from the rotation angle sensor 35, an object is placed between the guard 21 and the road surface or between the guard 21 and the cab 11. The buzzer 38 sounds and notifies the driver of the occurrence of an abnormality, and the power supply to the motor 23 is interrupted so that the guard 21 maintains the current state.

  If the signal from the rotation angle sensor 35 fluctuates in the step S4 even though there is no power supply to the motor 23, it is determined that the guard 21 has been pushed into the center of the cab 11 due to the contact of the object, and the buzzer 38 And the driver is notified of the occurrence of an abnormality, and at the same time, the motor 23 is powered and the guard 21 moves to the retracted position.

  If it is determined in step S5 that the guard 21 has returned to the origin (storage position) based on the signal from the rotation angle sensor 35, the next determination returns to step S1.

  If it is determined in step S5 that the guard 21 has not returned to the origin, the power supply to the motor 23 is interrupted.

  If the cab 11 is tilted forward during engine or transmission inspection and maintenance, the guard 21 will eventually abut against the front wheel 31 and be held down, but as described above, the guard 21 faces forward (in the direction of arrow A). Since it can swing, the swing mechanism of the guard 21 including the cross bar 20, the arms 16, 17, and the base 13 tilts following the cab 11.

  Therefore, even if the guard 21 comes into contact with the front wheels 31 during vehicle inspection and maintenance, the swing mechanism of the guard 21 is not damaged.

  Further, when the cab 11 is returned from the forward inclined posture to the original normal posture, the guard 21 is separated from the front wheel 31 and is biased toward the position where it is suspended from the crossbar 20 by the restoring force of the coil spring 30. Become.

  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 a conceptual diagram which shows the state which looked at an example of embodiment of the winding prevention apparatus of this invention from the front. It is a conceptual diagram which shows the connection structure of the guard and crossbar relevant to FIG. 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.

Explanation of symbols

11 cab 20 crossbar (linkage)
21 Guard 23 Motor (actuator)
24 Control means

Claims (2)

  A linkage provided at the lower side of the cab so that the tip part can swing between a position near the vehicle side in front of the wheel and an upper position near the center of the cab, and the side of the cab when the linkage is biased toward the vehicle side And a guard that hangs down from the linkage so as to protrude to the front and swings upward toward the front.   The entanglement preventing device according to claim 1, further comprising an actuator that swings the linkage, and a control unit that operates the actuator based on the presence or absence of the turn signal and the steering angle of the wheel.

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