JPH10264676A - Accelerator pedal lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact accelerator pedal lock device of high reliability and low cost in which an accelerator pedal can be securely locked, which can be adjusted in a simple way, which can be easily installed even in a narrow space between pedals, and which can be securely actuated. SOLUTION: On a lower surface of an accelerator pedal which vertically oscillates, a stopper mechanism 2 movable between the tip side of the accelerator pedal 1 and a root part is provided, the stopper mechanism 2 comprises a reciprocatory moving means driven by a motor 3, the stopper mechanism 2 invades to under the accelerator pedal 1 to stop by the reciprocatory moving means based on a lock instruction signal for setting the accelerator pedal 1 in a fixed condition, and the stopper mechanism 2 retreats by the reciprocatory moving means to move to a stand-by position for setting the accelerator pedal 1 in an actuation condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a route bus operated by a single person, for example, in order to prevent danger, in a state where an entrance door is open, an accelerator pedal is fixed, and even if the accelerator pedal is depressed, The present invention relates to an accelerator pedal lock device that prevents an accelerator pedal from being depressed.

[0002]

2. Description of the Related Art In a route bus operated by a single person, since the entrance is located at the center or rear of the vehicle, it is difficult to confirm the open / closed state of the door. If the driver depresses the accelerator pedal while the deadline is incomplete, the passenger may be in danger.

Therefore, in order to prevent danger, when the door is open, the accelerator pedal is mechanically fixed so that even if the accelerator pedal is depressed, the accelerator pedal cannot be depressed to prevent starting. An accelerator pedal lock device is provided. Such an accelerator pedal lock device is used to prevent departure when a taxi door is about to be tightened or to prevent starting during operation of various work vehicles. A similar lock device is used for a clutch pedal.

Various modifications have been made to this accelerator pedal lock device, and one of them is a structure of an accelerator pedal lock device developed by the present inventors in FIG.
As shown in FIG. 11 and 12 are views of the accelerator pedal 1 as viewed from the side, and show a lock lever 24 in which a rotating shaft 24c is fitted to a bracket 22 provided in front of the accelerator pedal 1.
And a roller 25 is provided at one end. A shaft 26a of an air cylinder 26 is in contact with the other end of the lock lever 24. The air cylinder 26 is connected to an air tank 29 via an electromagnetic valve 27 which opens and closes in synchronization with a door open / close switch. Connected.

According to the accelerator pedal lock device,
When the door is closed, as shown in FIG. 11, the solenoid valve 27 allows the compressed air of the air cylinder 26 to escape into the atmosphere, so that the shaft 26a of the air cylinder 26 is retracted by the internal return spring. Become. This shaft 26
When a is retracted, the lock lever 24 is also returned to the unlocked position shown in FIG. 11 by a return spring (not shown), so that the accelerator pedal 1 can be depressed and normal operation with the accelerator pedal 1 becomes possible.

[0006] When the door is in the open state, FIG.
As shown in FIG. 2, the solenoid valve 27
Makes the air tank 29 and the air cylinder 26 communicate with each other, and the compressed air in the air tank 29 is
26, the shaft 26a of the air cylinder 26 is pushed out, and the end of the lock lever 24 is pushed down until it hits the stopper 23, and at the same time, the roller 25 on the opposite side is pushed up to make contact with the accelerator pedal 1. To lock.

At this time, even if the accelerator pedal 1 and the roller 25 come into contact with each other, a large operating force is used as the air cylinder 26 and the roller 25 provided at the tip of the lock lever 24 rotates. The lock lever 24 can be brought to a predetermined lock position. When the accelerator pedal 1 is depressed during this lock, the pushing force of the roller 25 at the tip of the lock lever 24, that is, the pushing force of the shaft 26a of the air cylinder 26 opposes the pushing force, so that the accelerator pedal 1 is depressed. Has been prevented.

By linking the operation of the solenoid valve 27 with the opening / closing switch of the door, the accelerator pedal 1 can be depressed with a predetermined stroke S as shown in FIG. 11 during normal operation with the door closed. In the state where the door is opened and the interlock is effective, the accelerator pedal 1 can be fixed by the lock lever 24 as shown in FIG.

However, in this device, when the force generated by the air cylinder 26 becomes weak due to insufficient air pressure at the time of locking or air leakage which is likely to occur due to the use of a long air pipe, the air cylinder 26 However, there is a risk that the accelerator pedal 1 will be depressed and the vehicle will start. As an improvement to this, as shown in FIG. 13, the angle formed by the accelerator pedal 1 and a line connecting the contact point of the roller 25 with the accelerator pedal 1 and the center of the rotary shaft 24c is inclined forward by θ with respect to a right angle. Then, when the depressing force is applied to the accelerator pedal 1,
A rotational force is generated in the front of the lock lever 24 (direction A in the figure), that is, on the side to be locked, and this rotational force is received by the stopper 23 on the floor surface 10 to prevent the lock lever 24 from being pushed back during locking. There is a device.

[0010]

However, in these accelerator pedal lock devices, the stroke of the accelerator pedal 1, that is, the rotation shaft 24c of the lock lever 24, is required.
In order to secure the distance between the
It is necessary to form c with a small diameter. However, this rotary shaft 24c has a stepping force applied via the roller 25 and the lock lever 24, and dust easily adheres under bad conditions of the feet. There is a problem in that the rotating shaft 24c is easily damaged by dust, and looseness due to bitterness and abrasion occurs to cause malfunction.

Further, with respect to the air cylinder 26, the roller 25 is slid on the back surface of the accelerator pedal 1 to attach the lock lever 24 to a predetermined position in order to generate a force opposing the stepping force. However, since a large operating force is required, and a long stroke is required for the stroke to hit the end of the lock lever 24 to the stopper 23 of the floor surface 10, the air cylinder 26 becomes large, and in a small floor space, However, there is a problem that the arrangement of the components becomes difficult.

Further, the roller 25 is slid to the back of the accelerator pedal 1 to fix the lock lever 24 at a predetermined position.
There is also a problem that the durability of the 25 needs to be improved.
Further, in the case of the improved device of FIG.
However, if the lock lever 24 rotates too much, a gap beyond the play of the accelerator pedal 1 is formed between the accelerator pedal 1 and the engine, and when the pedal is depressed, the rotation of the engine increases. Coordination becomes very important. This adjustment is performed using the accelerator pedal 1 shown in FIG.
In addition, since it is necessary to perform the operation on a narrow floor where the brake pedal 52 and the clutch pedal 53 are provided, there is a problem that it is difficult and troublesome.

In addition, the air cylinder 26 is operated by the powerful air cylinder 26 and is returned by the return spring, so that the operation sound is loud. This loud operation sound gives passengers and crew members an uneasy feeling and a low-grade feeling. There is a problem that it is necessary to make the stopper quiet, and there has been an attempt to make the stopper quiet by attaching rubber to the stopper, but a new problem of durability of the rubber occurs.

It is an object of the present invention to securely lock the accelerator pedal, furthermore, it is easy to adjust the device, can be easily installed even in a narrow space between the pedals, and has a reliable operation that can be reliably performed. An object of the present invention is to provide a small, low-noise, and inexpensive accelerator pedal lock device.

[0015]

The accelerator pedal lock device of the present invention is provided with a stopper mechanism on the lower surface of the vertically oscillating accelerator pedal for moving between the tip side and the root of the accelerator pedal. The stopper mechanism has a reciprocating means driven by a motor, and the stopper mechanism enters the lower surface of the accelerator pedal by the reciprocating means and stops by the lock instruction signal, thereby setting the accelerator pedal in a fixed state. Further, the stopper mechanism is configured to be moved backward by the reciprocating movement means to a standby position where the accelerator pedal can be operated by an unlock signal.

Further, the reciprocating means is constituted by an endless belt wound around a pulley driven by a motor. Alternatively, the stopper mechanism is formed of an annular double-sided gear having teeth on the inner and outer surfaces, and the reciprocating means includes a pinion that meshes with an internal gear of the double-sided gear disposed inside the stopper mechanism, and the accelerator pedal. A guide member provided on the lower surface of the device and having guide portions on both sides, a rack formed between the guide portions, and a motor slidably supported in the movement direction by the guide portions. By driving the pinion to rotate the stopper mechanism via the internal gear of the double-sided gear, and engaging the external gear of the double-sided gear with the rack, the stopper mechanism is moved in the moving direction. It is configured to reciprocate.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment, FIG. 1 is a perspective view, FIG. 2 is a side view, and FIG. 3 is a view as seen from the X direction in FIG. The accelerator pedal lock device according to the first embodiment includes two brackets 7 a, which are provided on a floor 10 below the vertically swinging accelerator pedal 1 in a direction substantially perpendicular to the rotation axis direction of the accelerator pedal 1. 7b
Are provided in parallel, and a stopper mechanism (accel stopper) 2 inserted therebetween guides the accelerator pedal 1 to move between the tip side and the base.

A belt driving pulley 4 is attached to both ends of the brackets 7a and 7b as a reciprocating means for moving the stopper mechanism 2, and an endless belt 5 is hung on the pulley 4 so that one of the pulleys 4 can be normally inverted. Motor 3 or two motors, one for normal rotation and the other for reverse rotation, and the motor 3 is rotated forward by a lock instruction signal synchronized with an opening / closing switch of a door for getting on and off the bus, and a stopper is provided. The mechanism 2 enters the lower surface of the accelerator pedal 1 and stops, and the accelerator pedal 1 is fixed. Similarly, the motor 3 is rotated in reverse by an unlock signal synchronized with the opening / closing switch of the door for getting on and off the bus, and the stopper mechanism 2 is retracted to the standby position (unlock position) U so that the accelerator pedal 1 can be operated. To be configured.

The accelerator stopper 2 has a curved upper surface and a flat lower surface, and is mounted on the endless belt 5 without being fixed. Specifically, protrusions 2 a are provided on both side surfaces of the akle stopper 2, and the protrusions 2 a ride on the endless belt 5 to support the body of the akle stopper 2. The accelerator stopper 2 keeps a gap between the accelerator stopper 2 and the floor 10, and moves the accelerator stopper 2 in a direction substantially perpendicular to the direction of the rotation axis 1 c of the accelerator pedal 1 as the endless belt 5 moves. The accelerator pedal 1 is configured to be able to reciprocate between a position (lock position) R where the depression of the pedal 1 is prevented and the accelerator pedal 1 is fixed (a lock position) U and a standby position (unlock position) U where the accelerator pedal 1 is not hindered.

As shown in FIG. 2, the accelerator stopper 2 moves toward the accelerator pedal 1 and
When the limit switch 6a contacts the accelerator pedal 1 when the lock switch R comes to the lock position R, the limit switch 6b moves to the standby side and reaches the unlock position U, and the limit switch 6b moves to the shaft 4a of the pulley 4. The limit switches 6a and 6b prevent the respective positions from overrunning.

FIG. 4 shows an example of a method of setting the pulley shafts 4a and 4b. Pulley shafts 4a, 4 are provided on the brackets 7a, 7b.
A groove for stopping the bush 4c attached to the groove b, that is, a pulley shaft groove 8a, 8b extending from the front and a pulley shaft groove 9a, 9b formed to be inclined obliquely forward from the upper surface. Then, the endless belt 5 is hung on the pulley 4 and the front pulley shaft 4a is inserted into the depth of the pulley shaft grooves 8a, 8b, and the extension of the endless belt 5 is used to connect the pulley shaft 4b on the accelerator pedal 1 side to the pulley shaft. Grooves 9a, 9
b, the pulley 4 and the endless belt 5 can be easily set on the brackets 7a and 7b.

Once set, the pulley shaft 4
Since no force is applied to the a and 4b in the direction in which they are removed, they can be completely fixed. In this embodiment, the accelerator stopper 2 is merely mounted on the upper endless belt 5 and is not fixed. However, since the limit switches 6a and 6b are provided on the accelerator stopper 2, the position where the accelerator stopper 2 is mounted on the upper endless belt 5 is set. Since the accelerator stopper 2 stops at the predetermined position R or U by the limit switches 6a and 6b at the first operation after the setting, it is not necessary to adjust the position of the accelerator stopper 2 at the time of mounting.

Since the accelerator stopper 2 only needs to have enough strength to support the stepping force, the accelerator stopper 2 may be made hollow as shown in FIG. 5 to reduce the weight. Further, by applying rubber or the like to the contact portion of the accelerator stopper 2 or the contact portion of the accelerator pedal 2, silence can be further reduced, and damage to the contact portion can be reduced. Next, the operation of this device will be described with reference to a circuit example of a limit switch shown in FIG. 6 and a schematic movement diagram of FIG.

First, at the time of locking shown in FIG. 6A, when the door is open, the limit switch SW1, which indicates the open / closed state of the door, is closed when the interlock is activated. The circuit on the LS6a side is energized, the motor M3 rotates forward, and the accelerator stopper 2 moves to the lock position R. When the accelerator stopper 2 comes into contact with the accelerator pedal 1, the limit switch LS6a opens, so that the motor M3 stops and the accelerator stopper 2 stops at the lock position R.

In this state, when the accelerator pedal 1 is depressed, the accelerator stopper 2 is pressed against the floor surface 10 and is fixed, so that the depression of the accelerator pedal 1 is stopped to prevent the engine speed from rising. . The movement in the front-rear direction (moving direction) is prevented by the frictional force generated by the stepping force. Next, as shown in FIG. 6B, when the door is closed and the lock is released, the limit switch SW1 indicating the open / closed state of the door is opened, so that the relay R1 is turned off and the circuit on the limit switch LS6b side is connected. The polarity is reversed, and the motor M3 is reversed. If the accelerator pedal 1 is not depressed in this state, the accelerator stopper 2 is floating from the floor surface 10, and the accelerator stopper 2 moves to reach the unlock position U.
At the lock release position U, the limit switch LS6b is pushed and opened to stop energization, so that the motor M3 stops and the accelerator stopper 2 stops. In a state where the accelerator stopper 2 is located at the lock release position U, there is no interference with the accelerator pedal 1, so that normal traveling is possible.

In this case, the limit switches 6a,
At 6b, the movement of the endless belt 5 is stopped,
Endless belt 5 is locked at lock position R and unlock position U
Motor 3 for a predetermined time slightly longer than the time
The timer may be activated such that is activated. Even if the predetermined time is slightly longer, the accelerator stopper 2 is only fixed on the endless belt 5 and is not fixed.
At the locked position R, the vehicle is stopped by the accelerator pedal 2 and at the unlocked position U, by the pulley shaft 4a, and the endless belt 5 idles.
Move the accelerator pedal 2 to the lock position R or the unlock position U
Can be moved and arranged.

Next, a second embodiment is shown in FIGS. The accelerator stopper 2 is formed by an annular double-sided gear having an external gear 11 on the outer peripheral portion and an internal gear 12 on the inner peripheral portion, and having teeth on the inner and outer surfaces. External gear 11 on the outer periphery
Is engaged with the rack 14 provided on the bottom surface between the brackets 7a and 7b of the guide member having the guide portions 17a and 17b on both sides.

The internal gear 12 of the accelerator stopper 2
Then, a pinion 13 provided on a drive shaft 3c of the motor 3 disposed in the accelerator stopper 2 is meshed. The motor 3 has a guide groove 17a formed in the bracket 7a.
And is fixed to a motor base 15 supported movably in the moving direction of the accelerator stopper 2. Also, pinion 13
The drive shaft 3c provided with is guided by a roller 16 so as to be rotatable in a moving direction by a roller 16.

The limit switches 6a and 6b are provided at the lock position R and the unlock position U. In this example,
As shown in FIG. 9, the limit switch 6a is mounted on the accelerator pedal 1 side, and the limit switch 6a is mounted on the bracket 7b side. The movement of the accelerator stopper 2 of this device is performed by rotating the motor 3, which is described in detail below.

First, when the motor 3 is rotated, the pinion
The internal gear 13 on the inner peripheral portion of the accelerator stopper 2 is meshed with the internal gear 13 to rotate the accelerator stopper 2. When the accelerator stopper 2 rotates, the external gear 11 on the outer peripheral portion is moved to the rack 14.
To move in the direction of the arrow between the brackets 7a and 7b. Further, with the movement of the accelerator stopper 2, the motor 3 engaged with the accelerator stopper 2 is also integrally formed with the guide grooves 17a,
It is guided by 17b and moves. The moving direction is the motor 3
You can switch between forward and reverse rotation.

When the accelerator stopper 2 comes to the lock position R, it comes into contact with the accelerator pedal 1, and the motor 3 is stopped by the limit switch 6a. When a depressing force F is applied in this state, as shown in FIG.
Since the eleven teeth 11a and 11b abut on the accelerator pedal 1 at two points A and B, forces Fa and Fb act on both sides of a line passing through the center C of the external gear 11, and the rotation of the forces Fa and Fb. The component forces Ra and Rb in the directions are balanced, and the rotation of the external gear 11, that is, the accelerator stopper 2, is stopped. Therefore, even if the stepping force F is applied, the accelerator stopper 2 does not slip, and the stepping force F can be reliably supported.

When the accelerator stopper 2 moves to the unlocked position U by moving in the opposite direction, the limit switch 6 is turned off.
b operates and stops. In this state, the accelerator pedal 1
Therefore, the accelerator pedal 1 can be depressed, and normal operation can be performed. According to the accelerator pedal lock device as described above, under the accelerator pedal 1,
Since the accelerator stopper 2 is moved in a direction substantially perpendicular to the rotation axis 1c, it is easy to secure an installation place, and the motor 3 does not support the stepping force by its operating force, and the accelerator stopper 2 moves. Since only a small operating force is required, it is possible to reduce the size of the pedal, so that it can be easily mounted even in a narrow space between the pedals.

Further, the fixing of the accelerator stopper 2 in the moving direction is achieved by the frictional force generated by the depressing force F or the rotational balancing forces Ra and Rb, so that the depressing force F can be reliably supported. Is applied to the floor 10 via the accelerator stopper 2, so that there is no structurally weak portion, and high reliability can be obtained. Further, since the driving force for moving the accelerator stopper 2 is obtained by the motor 3 and compressed air is not used, malfunctions due to air leakage do not occur, and no air piping is required. It can be a low cost, low noise device.

In addition, in the first embodiment, since the position adjustment at the time of mounting the accelerator stopper 2 becomes unnecessary, the mounting can be simplified. Further, in the second embodiment, since the motor 3 can be built in the accelerator stopper 2, a space-saving device that can fit within the width of the accelerator pedal 1 can be obtained.

[0035]

According to the accelerator pedal lock device of the present invention described above, the accelerator stopper is moved under the accelerator pedal to be disposed at the lock position and the unlock position, so that the installation place can be easily secured. In addition, since the motor only moves the accelerator stopper, a small operating force is required, so that the motor can be reduced in size and can be easily mounted even in a narrow space between the pedals.

Further, a frictional force generated by a stepping force,
Or, with the rotational balancing force, the moving direction of the accelerator stopper can be fixed, so that the stepping force can be reliably supported, and
Since this stepping force is applied to the floor via the accelerator stopper, there is no structurally weak portion, and high reliability can be obtained. Further, since compressed air is not used, malfunctions due to air leakage do not occur, and no air piping is required, so that a low-cost and low-noise apparatus can be obtained.

In addition, in the device according to the second aspect of the present invention, it is not necessary to adjust the position when the accelerator stopper is mounted.
Easy to install. In the device according to the third aspect of the present invention, the motor can be built in the accelerator stopper, so that a space-saving device that can fit within the width of the accelerator pedal can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of an accelerator pedal lock device according to a first embodiment of the present invention.

FIG. 2 is a side view of the accelerator pedal lock device according to the first embodiment of the present invention.

FIG. 3 is a view of the accelerator pedal lock device according to the first embodiment of the present invention, as viewed from the X direction in FIG. 2;

FIG. 4 is a perspective view showing a method of attaching a pulley shaft.

FIG. 5 is a perspective view showing an example of an accelerator stopper.

6A and 6B are explanatory diagrams of a circuit of a limit switch according to the present invention, wherein FIG. 6A shows a circuit at the time of locking, and FIG. 6B shows a circuit at the time of unlocking.

FIG. 7 is a schematic view showing movement of an accelerator stopper.

FIG. 8 is a perspective view of an accelerator pedal lock device according to a second embodiment of the present invention.

FIG. 9 is a side view of an accelerator pedal lock device according to a second embodiment of the present invention.

FIG. 10 is a partial view for explaining rotation stop of an accelerator stopper according to a second embodiment of the present invention.

FIG. 11 is a side view of a prior art accelerator pedal lock device when unlocked.

FIG. 12 is a side view of a prior art accelerator pedal lock device when locked.

FIG. 13 is an explanatory diagram of a locking method of the improved accelerator pedal lock device of the prior art.

FIG. 14 is a plan view showing an arrangement example of an accelerator pedal and the like.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Accelerator pedal 2 ... Accel stopper 3 ... Motor 4 ... Pulley 5 ... Endless belt 7a, 7b ... Bracket 10 ... Floor surface 11 ... External gear 12 ... Internal gear 13 ... Pinion 14 ... Rack 15 ... Motor stand 16 ... Roller 17a, 17b ... Guide groove

Continuing from the front page (72) Inventor Akio Saito 3-25-1, Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside the Kawasaki Plant of Isuzu Motor Co., Ltd. (72) Inventor Masanobu Morino 3- 25-1, Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture No. Isuzu Motors Corporation Kawasaki Plant (72) Inventor Toru Okubo 3-25-1, Tonomachi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Isuzu Motors Corporation Kawasaki Plant (72) Inventor Shuji Wakisaka 8 Fujisawa City, Fujisawa City, Kanagawa Prefecture Isuzu Motors Co., Ltd. Fujisawa Plant (72) Inventor Tsuguo Fujita 8th floor of Tsurana, Fujisawa City, Kanagawa Prefecture Isuzu Motors Co., Ltd. Fujisawa Plant (72) Inventor Michiyo Tokumoto 3-25-1, Tonomachi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Isuzu Motors Corporation Kawasaki Plant (72) Inventor Kazuyuki Kuroda 3-25-1, Tonomachi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Isuzu Motors Corporation Kawasaki Plant (72) Inventor Takehisa Iwamoto Kamizayabe, Totsuka-ku, Yokohama, Kanagawa Prefecture Town character Fujii 320 Hashimoto Forming Industry Co., Ltd.

Claims (3)

[Claims] A stopper mechanism is provided on a lower surface of an accelerator pedal which swings up and down, between a tip side of the accelerator pedal and a base, and the stopper mechanism is a reciprocating means driven by a motor. The stopper mechanism is moved into the lower surface of the accelerator pedal by the reciprocating movement means and stopped by the lock instruction signal, the accelerator pedal is fixed, and the stopper mechanism is reciprocated by the lock release signal. An accelerator pedal lock device configured to move back to a standby position where the accelerator pedal can be operated by moving backward by a moving unit. 2. The accelerator pedal lock device according to claim 1, wherein said reciprocating means is an endless belt wound around a pulley driven by a motor. 3. The stopper mechanism is formed of an annular double-sided gear having teeth on the inner and outer surfaces, and the reciprocating means includes a pinion meshed with an internal gear of the double-sided gear disposed inside the stopper mechanism. A guide member provided on the lower surface of the accelerator pedal and having guide portions on both sides, a rack formed between the guide portions, and a motor slidably supported in the movement direction by the guide portions; By driving the pinion with the motor and rotating the stopper mechanism via the internal gear of the double-sided gear, and engaging the external gear of the double-sided gear with the rack, the stopper mechanism is The accelerator pedal lock device according to claim 1, wherein the accelerator pedal lock device is configured to reciprocate in a moving direction.