JPH087064Y2 - Accelerator safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an accelerator complete device for a battery vehicle.

[Prior art]

As shown in FIG. 13, an accelerator 5 in a battery vehicle is attached to a rotating arm 7 and a rod 52 arranged below a vehicle floor 6 so that the accelerator 5 can be stepped on.

That is, the lower end portion 55 of the accelerator 5 is attached to the rotating pin 51 projectingly provided on the vehicle floor 6. Further, a rod 52 is attached to the accelerator 5 via a fixture 521 attached near the lower end surface 53 of the accelerator. The lower end 522 of the rod 52 is movably attached to the rod 52 via a connecting tool 71 fixed to the tip of the rotating arm 7. The other end of the rotating arm 7 is rotatably attached to a sensor shaft 81 projecting from the lower side surface of the accelerator unit 8.

The lower end 92 of the two springs 9 and 9 as elastic members is attached to the rotating arm 7 at a substantially central portion thereof. The upper end 93 of the spring 9 is attached to the spring hanger 91. As a result, the accelerator 5 is always urged in the releasing direction A. Further, on the vehicle floor 6, a stopper 61 is provided upright on the lower portion of the front end of the accelerator 5.

Therefore, as shown in Fig. 13, step on the accelerator with the foot from the F direction. As a result, the rod 52 and the rotary arm 7 move downward in the D direction against the tensile force of the two springs 9. At this time, the sensor shaft 81 rotates together with the rotating arm 7. Further, the spring 9 extends in the G direction. When the accelerator 5 is further depressed,
The tip lower surface 53 comes into contact with the stopper 61.

Then, as shown in FIG. 14, in the accelerator circuit T, when the sensor shaft 81 is rotated, a sensor shaft switch (not shown) provided in the accelerator unit 8 comes into contact with the switch contact 80 to be turned on. . Also, the sensor axis
The speed adjusting terminal 84 provided on the 81 moves on the resistor 83 according to the amount of depression of the accelerator. As a result, the speed of the battery vehicle is adjusted.

[Problems to be solved]

However, the above conventional technique has the following problems.

That is, due to the strong impact and deterioration of the spring 9,
When both books are broken, the rotating arm 7 is
The lower surface 53 of the tip of the accelerator 5 descends until it comes into contact with the stopper 61, and does not return upward even if the foot is removed from the accelerator 5. That is, the sensor shaft 81 remains switched on, and the speed adjusting terminal 84 also remains in the maximum speed position.

The present invention has been made in view of the above conventional problems. When the elastic member is broken, it can be detected by the breakage detecting means and the battery vehicle can be stopped to ensure safety. It is intended to provide a device.

[Means for solving problems]

The present invention detects an accelerator provided in a battery vehicle, an elastic member that constantly urges the accelerator in the opening direction, and a breakage of the elastic member, and electrically turns on and off between output terminals based on the detection signal. The accelerator safety device is characterized in that breakage detecting means for causing the breakage detecting means is provided and the output of the accelerator circuit is stopped based on the on / off output of the breakage detecting means.

What is most noticeable in the present invention is the provision of various breakage detecting means capable of detecting breakage of an elastic member in a battery vehicle and stopping the battery vehicle. The breakage detecting means detects breakage of the elastic member and stops the output of the accelerator circuit based on the result.

Examples of the elastic member include a coil spring and a conductive spring.

Examples of the breakage detecting means include a mode using a limit switch, a conductive spring, and a photo sensor.

[Action]

In the present invention, since various breakage detecting means for detecting breakage of the elastic member are provided, it is possible to detect the breakage of the elastic member and stop the battery vehicle.

For example, when a limit switch is used as the breakage detecting means (see FIG. 1), when the elastic member is broken, the limit switch is also released and the accelerator circuit is turned off. Therefore, the battery vehicle stops.

On the other hand, when a conductive spring is used as the breakage detecting means (see FIG. 5), the conductive spring itself forming a part of the accelerator circuit is disconnected. Therefore, the accelerator circuit is turned off and the battery vehicle stops.

When a photo sensor is used as the breakage detecting means (see FIG. 10), the broken elastic member blocks light. As a result, the accelerator circuit is turned off and the battery vehicle is stopped.

〔effect〕

As described above, according to the present invention, it is possible to provide an accelerator safety device capable of ensuring safety by stopping the battery vehicle by detecting the breakage of the elastic member by the breakage detecting means. .

〔Example〕

First Embodiment An accelerator safety device according to this embodiment will be described with reference to FIGS.
This will be described with reference to the drawings.

That is, as shown in FIG. 1 and FIG. 2, the accelerator safety device of the present embodiment includes an accelerator 5 provided in a battery vehicle and a spring 2 as an elastic member that normally biases the accelerator 5 in a releasing direction. And a limit switch 1 as breakage detecting means for detecting breakage of the elastic member.

As shown in FIG. 1, the limit switch 1 has a switch box 12 provided on the side surface of the accelerator unit 8.
And a switch lever 13 standing upright on the switch box 12 and movable up and down, and a contact roller 11 attached to the lever 13. The contact roller 11 is attached so as to come into contact with the substantially central portion of the switch lever 20 arranged above it. The lever 13 is connected to an accelerator circuit S (Figs. 3 and 4) by a lead wire 14.

The switch lever 20 has its rear end attached to the upper rear end 85 of the accelerator unit 8 by means of a rotating pin 201. Further, a stopper 82 is provided above the accelerator unit 8 below the vicinity of the tip portion 202 of the switch lever 20.

The spring 2 is a coil spring. The upper end of the spring 2 is attached to the front end 202 of the switch lever 20, and the lower end thereof is attached to a locking hole 70 provided in the approximate center of the rotating arm 7. And
The spring 2 is attached so as to normally urge the accelerator 5 in the releasing direction A. That is, the spring 2 is located between the rotating arm 7 and the switch lever 20 and pulls both of them. And, the limit switch 1 is always in the ON state (Fig. 3).

Others are the same as the above-mentioned conventional example (Figs. 13 and 14).

 Next, the function and effect will be described.

First, as shown in FIG. 1 and FIG.
Is normal (not broken), the limit switch 1 is always in contact with the back surface 200 of the switch lever 20.

Therefore, in the accelerator circuit S, the limit switch 1 is in the ON state as shown in FIG. Further, when the accelerator 5 is not depressed, the sensor shaft 81 is in a switch OFF state. Also, accelerator 5
At the time of the operation of, the accelerator circuit S is brought into contact with the switch contact 80 and the switch is turned on, so that the battery vehicle can be driven as in the conventional case.

However, when the spring 2 is broken for some reason, the urging force of the spring 2 disappears. Therefore, the rotating arm 7 rotates to the lowest position. On the other hand, the switch lever 20 is not in contact with the limit switch 1 and is in the released state.

At this time, the accelerator circuit S, as shown in FIG.
The switch by the sensor shaft 81 is in the ON state, while the limit switch 1 is in the OFF state. That is,
The accelerator circuit S is cut off.

Therefore, the accelerator circuit will not operate and the battery vehicle will stop.

Therefore, according to this example, when the spring 2 is broken, the accelerator circuit is turned off, the battery vehicle is stopped, and safety can be ensured.

Second Embodiment An accelerator safety device according to this embodiment will be described with reference to FIGS.
This will be described with reference to the drawings.

That is, as shown in FIG. 5, the accelerator safety device of this embodiment uses a conductive spring 21 instead of the spring 2 in the first embodiment, which is used in the accelerator circuit X (7th embodiment).
(Figure) is incorporated in a part. Also, because of that,
The limit switch 1 of the first embodiment is not used. Other configurations are similar to those of the first embodiment.

The conductive spring 21 is a conductive coil spring. As shown in FIGS. 5 and 6, the conductive spring 21 has its upper end portion 211 connected to the circuit connection terminal 213 attached to the side surface of the accelerator unit 8. The circuit connection terminal 213 is connected to the accelerator circuit X via the lead wire 214 as shown in FIG. The lower end 212 of the conductive spring 21 is attached to the locking hole 70 of the rotating arm 7. As a result, the conductive spring 21 always urges the accelerator 5 in the releasing direction. In addition, in the accelerator circuit X, a conductive spring
21 is in the ON state.

Next, when the battery vehicle travels, the accelerator 5 is depressed in the F direction as shown in FIG. As a result, the rod 52 and the rotating arm 7 move downward in the D direction.

However, if the spring 21 breaks for some reason, the rotating arm 7 rotates in the maximum speed direction as in the first embodiment. However, as shown in FIG.
In the accelerator circuit X, the conductive spring 21 is turned off due to the breakage (breakage). Therefore, the drive device (not shown) is stopped and the battery vehicle is stopped.

Therefore, according to the present embodiment, the safety of the battery vehicle can be ensured by utilizing the conductive spring 21 as in the first embodiment.

Third Embodiment An accelerator safety device according to this embodiment will be described with reference to FIGS.
This will be described with reference to the drawings.

That is, as shown in FIGS. 8 to 10, the accelerator safety device of this embodiment includes an accelerator 5 provided in a battery vehicle, and a spring 22 as an elastic member that normally urges the accelerator in the releasing direction. , A photo sensor as a breakage detecting means for detecting breakage of the spring 22.

That is, as shown in FIG. 8, the lower end 221 of the spring 22 is attached to the lower end 751 of the rotating arm 75 disposed below the vehicle floor 6. Also, the spring 2
2, the upper end 222 is attached to the locking hole 250 of the bracket 25. Photosensors are provided on both sides of the spring 22, as shown in FIGS. 9 and 10. The photo sensor includes a light emitting element 3 and a light receiving element 4 having an electronic structure.

The rotating arm 75 is an upper arm 750 protruding upward.
And a roller 753 arranged at the tip of the upper arm 750 and a lower arm 752 protruding downward. Further, the rotating arm 75 is integrally connected to the sensor shaft 81 at a substantially central portion thereof. The sensor shaft 81 has a switch contact 80, a resistor 83, etc. as in the first embodiment (11th
These are connected to a driving device (not shown) via a connector 82 and a lead wire 821.

The roller 753 is brought into contact with the back surface 54 of the accelerator 5. The lower end 55 of the accelerator 5 is rotatably attached to a rotating pin 51 provided on the vehicle floor 6. Further, a stopper 61 is provided upright on the vehicle floor 6 in the vicinity of the lower end surface 53 of the accelerator 5.

Further, the lower arm 752 is arranged so as to come into contact with the lower stopper 62 provided below the vehicle floor 6.

 Next, the function and effect will be described.

First, the accelerator 5 is normally urged in the releasing direction by the spring 22 via the rotating arm 75. At that time, the spring 22 is located above the light emitting element 3 and the light receiving element 4 of the photo sensor. Therefore, the light 31 from the light emitting element 3 is always incident on the light receiving element 4, and the switch of the photo sensor is ON (FIG. 11).

Therefore, when traveling, as shown in FIG. 8, the accelerator 5 is first depressed in the K direction. As a result, the spring 22 extends in the N direction. And the rotating arm 75
The lower end 751 of M moves in the M direction. In addition, the above roller 753
Moves in the L direction while sliding on the back surface 54 of the accelerator 5. At this time, the sensor shaft 81 is rotated in the same manner as in the first embodiment, and the accelerator circuit Y is in an operating state (ON state).

By the way, when the spring 22 is broken at a part C of the engaging portion 222, the spring 22 is
As shown in Fig. 10, it falls in the R direction. Therefore, the light 31
Will be blocked by the spring 22. Therefore, the light 31 does not reach the light receiving element 4 from the light emitting element 3. As a result, as shown in FIG. 12, the accelerator circuit Y is in the OFF state even when the sensor shaft 81 is in the operating state.

Therefore, according to the present example, when the spring is broken, the photo sensor detects it and stops the battery vehicle to ensure safety.

In this example, the photosensor is not used, and instead of the spring 22, the conductive coil spring shown in the second embodiment can be used to form a part of the accelerator circuit. As a result, the same effect as in the second embodiment can be obtained.

[Brief description of drawings]

1 to 4 show the first embodiment, FIG. 1 is a front view of an accelerator safety device, FIG. 2 is a side view of the accelerator safety device, and FIGS. 3 and 4 are accelerator circuit diagrams. 5 to 7
FIG. 5 shows a second embodiment, FIG. 5 is a front view of an accelerator safety device, FIG. 6 is a side view of the accelerator safety device, FIG. 7 is an accelerator circuit diagram, and FIGS. Fig. 8 shows an example, Fig. 8 is a front view of the accelerator safety device, Fig. 9 is a plan view showing the positional relationship between the spring and the photosensor, Fig. 10 is a side view showing the state when the spring is broken, and Fig. 11 And the
FIG. 12 is an accelerator circuit diagram, FIGS. 13 and 14 are conventional examples, FIG. 13 is a front view of the accelerator device, and FIG. 14 is an accelerator circuit diagram. 1 …… Limit switch, 2,22 …… Spring, 20 …… Switch lever, 21 …… Conductive spring, 3 …… Light emitting element,
4 …… Light receiving element, 5 …… Accelerator, 6 …… Vehicle floor, 7 ……
Pivoting arm, 8 ... Accelerator unit, S, X, Y, ... Accelerator circuit,

Claims (1)

[Scope of utility model registration request] 1. An accelerator provided in a battery vehicle, an elastic member that constantly urges the accelerator in the opening direction, and a breakage of the elastic member are detected, and an output terminal is electrically connected based on the detection signal. An accelerator safety device comprising: breakage detecting means for turning on and off, and stopping the output of the accelerator circuit based on the on / off output of the breakage detecting means.