JPH10272957A - Accelerator interlock device - Google Patents

Abstract

(57) [PROBLEMS] To mechanically obtain the timing of movement of a lock member for disabling an accelerator pedal in accordance with opening and closing of a door without using a solenoid valve or an electric / electronic controller. A simple and compact accelerator interlock device capable of securely locking the accelerator pedal. An input member that forms a cam surface on a vehicle door and is guided by the cam surface to generate a driving force by reciprocating motion, and a lock that protrudes and retracts below an accelerator pedal to fix the accelerator pedal. A member is provided, and with the opening of the door, a drive member is operated with a drive force obtained from the input member to move the lock member to a position where the accelerator pedal is not depressed, thereby fixing the accelerator pedal. It is constituted so that.

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 interlock device that prevents an accelerator pedal from being depressed.

[0002]

2. Description of the Related Art In a one-man route bus, etc., since the entrance is 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 to start the vehicle with the door closed incompletely, there is a risk that passengers may be in danger.

In order to prevent this danger, when the door is not completely closed, the accelerator pedal is mechanically fixed so that even if the accelerator pedal is depressed, the accelerator pedal cannot be depressed.
An accelerator interlock device that prevents starting is provided. This accelerator interlock device is used to prevent departure when the taxi door is not completely closed, and to prevent departure during work of various work vehicles. A similar lock device is used for a clutch pedal.

Various measures have been devised for this accelerator interlock device, and the structure of one of the accelerator interlock devices is shown in FIG. In this device, the opening and closing of the door 2 for getting on and off is switched by the electromagnetic switching valve 32 between the supply path of the compressed air from the air tank 31 and the compressed air is supplied to the pushing side of the double-acting air cylinder 33 called a “door engine”. This is performed by supplying the air to the chamber 33a or the chamber 33b on the retraction side.

This device receives a door opening instruction signal from a control unit (CU) 34 when the door 2 is opened,
The air supply to the double-acting air cylinder 33 is switched to the open side 33b by setting the electromagnetic switching valve 33 to the A side. At the same time, the electromagnetic switching valve 35
Switch to the operation side D, supply air to the air cylinder 36, extend the shaft 36a, push down the rear end of the lock lever 37 of the lock member 25, push up the roller 37a at the front end, and draw a solid line. And locked so that the accelerator pedal 1 cannot be depressed.

When the door 2 is to be closed, it receives a door closing instruction signal from the control unit (CU) 34 and
When the air supply is switched to the closing side 33a with the passage 32 as the B side, the door 2 is closed. Immediately before the door 2 closes, it hits the limit switch 38 to open the circuit of the electromagnetic switching valve 35, switch the electromagnetic switching valve 35 to the non-operating side E, and open the air of the air cylinder 36 to the atmosphere. . Therefore, the return spring 39 built in the air cylinder 36
is pulled back, and the lock lever 37 returns to the unlock position U shown by the dotted line.

The two solenoid-operated directional control valves 33 and 35 are an electric circuit formed by a limit switch 38, a relay, and the like, and provide a time lag (operation time) for operating the air cylinder 33 for opening and closing the door 2 and the air cylinder 36 for locking. (Delay), and safety is ensured by releasing the lock after the door 2 is completely closed.

[0008]

However, in this device, the air cylinder 33 for opening and closing the door 2 and the air cylinder 36 for locking are controlled by separate electromagnetic switching valves 32 and 35 because a time lag is required. It is necessary to use two electromagnetic switching valves, an electric circuit for operating each of them, a controller 34 including limit switches 38 and relays, and the number of parts and connection points are increased. Problem. In addition, a long air pipe is required and the number of connection points is increased, so that there is a problem that air leakage easily occurs.

In order to solve this problem, Japanese Utility Model Application
No. 44838 proposes a device that operates both an air cylinder for opening and closing a door and an air cylinder for locking an accelerator pedal with a single electromagnetic switching valve and providing a check valve with a variable throttle to generate a time lag. I have. However, in this device, the time lag, which is the difference between the timing of opening and closing the door and the timing of setting and releasing the lock of the accelerator pedal, is adjusted by adjusting the flow rate of air using a check valve with a variable throttle. The air flow rate is affected by the air pressure, and the air pressure fluctuates when the air is consumed due to opening and closing of a door or the like. Therefore, there is a problem that adjustment is difficult and an appropriate time lag cannot be set.

In addition, in the accelerator interlock device that supports the accelerator pedal 1 with the operating force of the air cylinder 36, the operating force of the air cylinder 36 is increased in order to securely lock against the depressing force. And a large air cylinder is required. However, when the size is increased, there is a problem in that the clutch pedal 52, the brake pedal 53, and the like in addition to the accelerator pedal 1 shown in FIG. 13 cannot be arranged in a narrow floor space.

When the air cylinder 36 is provided at a distance from the accelerator pedal 1 to lock the accelerator pedal 1 via a lever or a link mechanism, a drive for moving the lever or the link mechanism is further increased. This requires power, increases the size of the air cylinder 36, increases air consumption, and further increases the cost of the apparatus.

An object of the present invention is to mechanically obtain the timing of movement of a lock member for disabling the accelerator pedal in accordance with opening and closing of a door without using a solenoid valve or an electric / electronic controller. Another object of the present invention is to provide a simple and compact accelerator interlock device capable of securely locking an accelerator pedal.

[0013]

According to the present invention, there is provided an accelerator interlock device comprising a cam surface formed on a vehicle door, an input member guided by the cam surface to generate a driving force by reciprocating motion, and an accelerator pedal. And a lock member that protrudes and retracts below the lock member to fix the accelerator pedal, and operates the drive member with a drive force obtained from the input member when the door is opened, thereby causing the accelerator member to release the accelerator pedal. The accelerator pedal is moved to the step-inhibited position and the accelerator pedal is fixed.

Further, the input member is constituted by a hydraulic cylinder having a piston which reciprocates while being guided by the cam surface, and the drive member is constituted by a hydraulic cylinder. Or,
The input member is constituted by a push-pull wire that is guided by the cam surface and reciprocates, and the lock member is configured to protrude and retract below the accelerator pedal by the push-pull wire.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, as shown in FIG. 1, a cam surface 3 is provided at an upper end portion of a door 2 for a vehicle. Directly connected to the piston 15a of the oil feeding cylinder 15 of the input member 5, the reciprocating motion of the cam portion 4 is converted into a hydraulic pressure, that is, a driving force. Further, in order to transmit the hydraulic pressure, a hydraulic pipe 16 is provided, and a drive cylinder 17 is connected to the hydraulic pipe 16 to convert the transmitted hydraulic pressure into reciprocating motion. And this drive cylinder 17
Causes the lock member 9 to reciprocate between the lock position R and the lock release position U on the lower surface of the accelerator pedal 1.

That is, the input member 5 is formed by the oil supply cylinder 15, the transmission member 6 is formed by the hydraulic pipe 16, the drive member 7 is formed by the hydraulic drive cylinder 17, and the lock member 9 is used to drive the accelerator pedal 1 by the drive member 7. It is configured to move to the lock position R where the depression is prohibited. As shown in FIG. 1, the lock member 9 is formed by pivotally supporting a lock lever 37 having a roller 37a at the distal end side by a bracket 8, and when locking, pushes down the rear end of the lock lever 37 to release the roller at the distal end side. 37a
To lock the accelerator pedal 1 as shown by the dotted line in FIG. 1 (a) so that the accelerator pedal 1 cannot be depressed. When the lock is released, the accelerator pedal 1 is connected to the accelerator pedal 1 as shown by the solid line. The lock lever 37 is returned to the lock release position U where no interference occurs, and the accelerator pedal 1 can be depressed.

The lock member 9 is not limited to the example shown in FIG. 1, but directly stops the depression force of the accelerator pedal 1 at the working end 17a of the small drive cylinder 17 as shown in FIG. It may be configured as
In this case, the working end 17a becomes the lock member 9. In short, any mechanism can be used as long as it can reciprocate the lock member 9 capable of inhibiting the depression of the accelerator pedal 1 between the lock position R and the unlock position U on the lower surface of the accelerator pedal 1 by operating the drive cylinder 17.

As for the cam surface 3 and the cam portion 4, various arrangements of the cam surface 3 and the cam portion 4 can be considered according to the opening and closing method of the door 2, as exemplified in FIGS. As for the sliding door system, the upper surface of the door 2 is a cam surface in FIG.
An inclined surface 3a is provided at the rear end of the upper surface, and in FIG. 2, the cam surface 3 is provided at the side surface of the door 2, and the inclined surface 3a is provided at the rear end of the side surface. Further, in FIG. 3, a rail 19 is attached to the surface of the door 2, the lower surface of the rail 19 is formed as the cam surface 3, and the cam portion is provided even when there is no room for disposing the cam portion 4 on the upper portion of the door 2. I can do it.

In the case of a folding door type door, a cam surface 3 is provided around the rotation axis 2c of the door 2 in FIG. 4, and in FIG. Surface 3 is provided. Each of the cam surfaces 3 and the cam portions 4 is formed so as to optimize the operation timing of the lock member 9 in accordance with the opening and closing timing of the door 2.

As shown in FIG. 6, the oil feeding cylinder 15 has a return spring 15s for pushing back the piston 15a.
And a cylinder opening communicating with the oil tank 18.
15d is provided so as to replenish the amount of oil that is consumed due to slight leakage or adhered to the cylinder wall surface so that it can be used continuously. The drive cylinder 17 is, as shown in FIG.
The piston 17a, that is, the shaft 17b, is configured to reciprocate based on the oil supply amount.

The stroke of each reciprocating motion of the oil supply cylinder 15 and the drive cylinder 17 needs to be set in accordance with the amount of movement of the cam portion 4 and the lock member 9. 8 (a) and (b), at least one of the shafts of the oil feeding cylinder 15 and the driving cylinder 17
Elastic parts 15c, 17c such as compressible rubber and springs are provided on 15b, 17b so as to be compressible within the range of play of the accelerator pedal 1 so as to absorb the excess stroke of each cylinder 15, 17. To be configured. With this configuration,
Just set the stroke slightly larger than required,
Stroke adjustment can be completed, and fine adjustment can be eliminated.

Further, by providing the air vent 14 at the highest position of the pipe, or by arranging the oil supply tank 18 and the cylinder opening 15d at the highest position of the hydraulic section and bleeding air, the gas in the hydraulic pipe is To prevent the desired stroke from being lost due to the compression and expansion of the gas. Alternatively, the gas mixed in by applying a pressure to the entire hydraulic pipe in advance may be in a compressed state so that the influence of the volume change of the gas does not appear.

Next, as shown in FIG. 9, as a second embodiment, an oil supply cylinder 15, a hydraulic pipe 16 and a drive cylinder
Instead of 17, the lock lever 37 may be reciprocated by using a push-pull wire 19 which is guided by the cam surface 3 and reciprocates directly connected to the cam portion 4. That is, one end of the push-pull wire 19 penetrating through the tube 20 is directly connected to the cam portion 4, the other end is connected to the shaft 17a for reciprocating the lock member 9, and the push-pull wire 19 is returned to the original position. A return spring 15s and elastic bodies 15c and 17c for absorbing overstroke are provided on at least one of the input side shaft 15b and the drive side shaft 15b.

The operation of these devices will be described below. When the door 2 starts to open, as shown in FIG. 1A, the cam portion 4 which has been in contact with the rear inclined surface 3a of the upper end of the door 2
Is pushed up along the inclined surface 3a, and reaches the upper surface 3b of the door 2 to keep the cam lift amount. At this time, the piston 15a in the oil supply cylinder 15 is pushed up, closing the opening 15d connected to the oil supply tank 18 and sending out the oil in the oil supply cylinder 15 to the drive cylinder 17 side. The drive cylinder 17 generates a stroke corresponding to the oil supply amount, and moves the lock lever 37 to lock the accelerator pedal 1 as shown in FIG.

Next, the door 2 is closed, and the cam portion 4 is
When it comes to a, the cam part 4 goes down, so the return spring
With the biasing force of 15 s, the piston 15a goes down and pulls back oil from the drive cylinder 17, and the piston 17a of the drive cylinder 17
Pull back a. The retracting of the piston 17a returns the lock lever 37 to the unlocked position U so that the accelerator pedal 1 can be depressed, so that normal operation by the accelerator pedal 1 is enabled.

FIG. 11 shows the opening / closing amount of the door 2 and the cam lift amount (=
The relationship between the oil supply cylinder 15 (stroke) and the oil supply amount (= stroke of the drive cylinder 17) is shown. As soon as the cam portion 4 is pushed up along the inclined surface 3a, the cylinder opening 15d connected to the refueling tank 18 is closed and the driving cylinder 17 is closed.
Oil is sent to the piston 17a and the lock lever 37
To the lock position R. Then, when the rubber portion 2a provided at the end of the door 2 at the end of the door 2 is fully extended, the cam portion 4 completes the lift, and even when the door 2 is opened, the cam portion 4 maintains a constant lift, The lock lever 37 keeps the accelerator pedal 1 locked.

When the door 2 is closed, the cam portion 4 comes into contact with the inclined surface 3a after the rubber portion 2a comes into contact with the entrance wall.
When the door stop rubber portion 2a is crushed and closed, the shaft 17b of the drive cylinder 17 also finishes retracting. When the shaft 17b is retracted, the lock lever 37 returns to the unlock position U, and the accelerator pedal 1
Is unlocked and can be depressed.

In other words, the locking mechanism starts to be released after the door stop rubber portion 2a comes into contact with the entrance wall and the entrance / exit gap disappears, so that the accelerator cannot be depressed while the door is still open. According to the accelerator pedal lock device as described above, the driving force is generated by the input member 5 by the reciprocating motion guided by the cam surface 3 provided on the door 2,
With this driving force, the lock member 9 is moved between the lock position R and the unlock position U on the lower side of the accelerator pedal 1, and
Since the accelerator pedal 1 is configured to be locked, a required time lag can be mechanically obtained by the shape of the cam surface, so that electric and electronic control devices such as an electromagnetic switching valve and a relay can be eliminated. It is possible to make a small device with a simple component configuration.

Further, since the reciprocating motion of the cam portion 4 is transmitted by a hydraulic system or a push-pull wire to drive the drive cylinder 17, there is no fear of air consumption or air leakage. In the case of hydraulic pressure, there is no fear of leakage since oil does not easily leak. Also, depending on the manner in which the inclined surface 3a of the cam surface 3 provided on the door 2 is formed, in a state where the rubber portion 2a of the door stop is extended and a gap is formed in the door 2, the cam lift is completed and the locking of the accelerator pedal 1 is completed. Relationship can be easily set.

The elastic portions 15 are provided on the shafts 15b and 17b.
Since the c and 17c are provided, the adjustment of the movement amount of the shafts 15b and 17b can be simplified. That is, excessive lifting can be absorbed within the range of play of the accelerator pedal.

[0031]

According to the accelerator pedal lock device of the present invention described above, the driving force is obtained from the opening and closing operation of the door by the cam mechanism provided on the door, and the driving force inhibits the depression of the accelerator pedal by the driving force. Since the accelerator pedal can be locked by moving to the position, the timing of the operation of the lock member for opening and closing the door can be mechanically obtained by the cam mechanism, and electric and electronic control devices such as electromagnetic switching valves and relays are not required Can be

Therefore, it is possible to obtain an accelerator interlock device which can be easily attached and has a reliable operation with a simple component configuration. In addition, since the reciprocating motion of the cam section is transmitted by a hydraulic system or push-pull wire to drive the drive cylinder, the device can be downsized, and there is no need to worry about air consumption or air leakage, and the reliability of the device is improved. Can be.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an accelerator interlock device using a hydraulic device according to a first embodiment of the present invention;
(A) shows the unlocked state, and (b) shows the locked state.

FIG. 2 is a partial view of a door showing a cam surface and a cam portion relating to a sliding door type door.

FIG. 3 is a partial view of a door showing a cam surface and a cam portion relating to a sliding door type door.

FIGS. 4A and 4B are partial views of a door showing a cam surface and a cam portion relating to a folding door type door, wherein FIG. 4A shows a door closed and FIG. 4B shows a door opened.

5A and 5B are partial views of a door showing a cam surface and a cam portion relating to a folding door type door, FIG. 5A is a partial view showing the entire configuration, FIG. FIG. 4 is a partial view showing a state where a door is opened.

FIG. 6 is a configuration diagram showing an oil feeding cylinder.

FIG. 7 is a configuration diagram showing a drive cylinder.

FIG. 8 is a partial configuration diagram of a shaft showing an elastic body provided on the shaft of the cylinder.

FIG. 9 is a configuration diagram of an accelerator interlock device using a push-pull wire according to a second embodiment of the present invention.

FIG. 10 is a side view showing another example of the accelerator pedal lock mechanism.

FIG. 11 is a diagram showing a relationship among a door opening / closing amount, a cam lift amount, and an oil supply amount.

FIG. 12 is a configuration diagram of a prior art accelerator pedal lock device when locked.

FIG. 13 is a plan view showing an example of arrangement of an accelerator pedal and the like.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Accelerator pedal 2 ... Door 3 ... Cam surface 4 ... Cam part 5 ... Input member 6 ... Transmission member 7 ... Driving member 8 ... Bracket 9 ... Lock member 10 ... Floor surface 15 ... Oil cylinder 16 ... Hydraulic piping 17 ... Drive Cylinder 18… Oil tank 19… Rail 37… Lock lever 37 a… Roller O… Door open C… Door closed R… Lock position U… Lock release position

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] An input member which forms a cam surface on a vehicle door, is guided by the cam surface and generates a driving force by reciprocating motion, and protrudes and retracts below an accelerator pedal to fix the accelerator pedal. A lock member is provided, and with the opening of the door, a drive member is actuated by a drive force obtained from the input member to move the lock member to a position where the accelerator pedal is not depressed. An accelerator interlock device configured to be fixed. 2. The accelerator interlock device according to claim 1, wherein the input member is a hydraulic cylinder having a piston reciprocatingly guided by the cam surface, and the driving member is a hydraulic cylinder. 3. The push-pull wire, wherein the input member is guided by the cam surface and reciprocates, and the push-pull wire causes the lock member to protrude and retract under an accelerator pedal. Accelerator interlock device.