JPH0671259U - Vehicle pedal position detector - Google Patents

Abstract

(57) [Abstract] [Purpose] In a pedal position detecting device for a vehicle, the device is made compact and high detection accuracy of the pedal position is obtained without being substantially affected by lateral displacement due to pedaling force of the pedal. To do so. A proximity switch 14 facing the operating direction of the pedal 10 is provided on one of the vehicle body side 13 and the pedal side 16, and a sensing plate 17 facing the proximity switch 14 at a predetermined pedal position is provided on the other side. Between the sensing plate 17 and the proximity switch 14, the spring 19 that urges the sensing plate 17 to the initial position toward the proximity switch 14 while movably supporting the sensing plate 17 in the approach direction to the proximity switch 14. A stopper 20 is provided to prevent these from approaching more than a predetermined amount.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle pedal position detecting device.

[0002]

[Prior art]

 As a conventional pedal position detecting device, a device provided with a contact switch that is operated by being pushed by a push portion at a predetermined position when the pedal is depressed is proposed in Japanese Utility Model Laid-Open No. 1-135519. Since the pedal effort acts, it is prone to failure and has problems in terms of reliability and durability.

Therefore, there is an example in which a proximity switch is used as shown in FIG. Reference numeral 1 denotes an operation pedal such as a clutch provided in a driver's cab, and the pedal 1 is swingably supported by a base end of an arm 2 thereof via a horizontal shaft 3. One end of the link rod 4 is connected to an intermediate portion of the pedal arm 2 via a ball joint 4a, and the other end of the link rod 4 is connected to a sensing plate 5 via a ball joint (not shown).

The sensing plate 5 is rotatably attached to the base end side of the vehicle body side bracket 6 on the opposite side of the ball joint with a pin 7. A proximity switch 8 is fixed to the tip of the bracket 6 at a fixed detection distance with respect to the sensing plate 5 in a predetermined angular range so as to overlap with the sensing plate 5.

When the pedal 1 is depressed, the sensing plate 5 pivots (swings) with the pin 7 as a fulcrum via the link rod 4, and the proximity switch is moved along with the movement of the plate 5. By turning 8 on and off, the pedal position can be detected with some accuracy. In this case, the pedal 1 is displaced left and right (horizontal axis direction) by the stepping force, but since the pedal position is detected via the sensing plate 5, the detection distance of the proximity switch 8 can always be kept constant. .

[0006]

[Problems to be solved by the device]

 However, since such a conventional example is provided with the link rod 4 that connects the sensing plate 5 and the pedal arm 2, there is a problem in that it is disadvantageous in terms of space and layout. Even if it can be said that the detection distance of the proximity switch 8 can be kept constant regardless of the lateral displacement of the pedal 1, the position of the sensing plate 5 is displaced via the link rod 4 depending on the displacement amount of the pedal 1. Therefore, there was also a problem that the accuracy of detecting the pedal position was affected.

The present invention aims to solve such problems.

[0008]

[Means for Solving the Problems]

 For this reason, one of the vehicle body side and the vehicle body side is provided with a proximity switch facing in the pedal operating direction, and the other is provided with a sensing plate that faces the proximity switch at a predetermined pedal position substantially in parallel with the proximity plate. A spring that urges the sensing plate to the initial position toward the proximity switch and a spring that urges the sensing plate toward the proximity switch side while restricting them from approaching more than a predetermined amount while supporting the switch freely in the approaching direction A stopper is provided.

[0009]

[Action]

 When the pedal is depressed, the sensing plate moves relatively close to the proximity switch, and the proximity switch turns on at the pedal position facing the sensing plate almost in parallel. The switch will turn off.

When the sensing plate and the proximity switch approach each other by a predetermined amount or more, the stopper pushes the sensing plate between the proximity switch and the proximity switch to move the spring in the compression direction of the spring, so that the sensing plate does not hit the proximity switch. In other words, even if there are some errors or deviations in the mounting positions of the sensing plate and proximity switch, as long as they are within the moving range of the sensing plate, the detection distance of the proximity switch can be kept constant. .

Since the sensing plate and the proximity switch have a relative relationship of approaching each other in the operation direction of the pedal, even if the plate and the switch face are slightly displaced even if the pedal is displaced in the left-right direction by the pedaling force, these The detection position does not change.

[0012]

【Example】

 In FIG. 1, reference numeral 10 denotes an operation pedal such as a clutch provided in a driver's cab, and the pedal 10 is swingably supported by a pedal bracket 11 on the vehicle body side at a base end of an arm 12 via a horizontal shaft (not shown). It A switch bracket 13 is attached to the pedal bracket 11 near the base end of the pedal arm 12, and a proximity switch 14 is arranged on the side wall facing the pedal operating direction. A lever 16 is screwed to the pedal arm 12 in the vicinity of the base end together with a support metal fitting 15 on a side surface, and a sensing plate 17 facing the proximity switch 14 at a predetermined pedal position is provided at a tip end of the lever 16 in a substantially parallel manner.

The sensing plate 17 is movably supported via a shaft 18 perpendicular to the tip of the lever 16, and a spring 19 for biasing the plate 17 to the initial position toward the proximity switch 14 is interposed between the sensing plate 17 and the tip of the lever 16. To be dressed. A stopper 20 is attached to the sensing plate 17 to prevent the plate 17 from approaching the switch 14 more than a predetermined distance between itself and the switch bracket 13. The stopper 20 is formed by a bolt that is screwed to the sensing plate 17, and the amount of protrusion from the plate 17 surface (that is, the pedal position where the stopper 20 abuts the switch bracket 13) can be adjusted by rotating the bolt. .

With such a configuration, when the pedal 10 is stepped on, the sensing plate 17 approaches the proximity switch 14 together with the arm 12 as shown in FIG. 2, and the stopper 20 abuts the switch bracket 13 at the pedal position where the proximity switch 14 abuts. When the pedal 10 is returned, the stopper 20 is separated from the switch bracket 13 and the distance from the sensing plate 17 is widened, so that the proximity switch 14 is turned off. Will be done.

When the sensing plate 17 and the proximity switch 14 approach each other by a predetermined amount or more, the stopper 20 pushes the sensing plate 17 between it and the proximity switch 14 to move the spring 19 in the compression direction, so that the sensing plate 17 moves to the proximity switch 14. There is nothing to hit. In other words, even if there are some errors or deviations in the mounting positions of the sensing plate 17 and the proximity switch 14 as long as they are within the moving range of the sensing plate 17, the detection distance of the proximity switch 14 is kept constant. Can be kept.

Since the sensing plate 17 and the proximity switch 14 are close to each other in the operation direction of the pedal 10, even if the pedal 10 is displaced in the left-right direction by the stepping force, the opposing surfaces of the plate 17 and the switch 14 may be slightly different. Even if the displacement occurs, the detection position of the sensing plate 17 does not change. Further, by rotating the stopper 20, the detection distance between the proximity switch 14 and the sensing plate 17 can be adjusted appropriately.

Therefore, the detection position is not affected by the displacement of the pedal 10 in the left-right direction, and the detection distance is unlikely to change due to an attachment error or deviation of the sensing plate 17 and the proximity switch 14, so that the pedal position is good. It is possible to obtain high detection accuracy. Further, since no connecting member such as a link rod is required, the entire device can be compactly integrated, which is advantageous in terms of space and layout.

[0018]

[Effect of device]

 In short, according to this invention, one of the vehicle body side and the pedal side is provided with a proximity switch facing the pedal operation direction, and the other is provided with a sensing plate facing the proximity switch at a predetermined pedal position substantially parallel to the proximity plate. , While supporting the sensing plate freely in the direction of approach to the proximity switch, the spring that biases the sensing plate to the initial position toward the proximity switch and the proximity between the sensing plate and the proximity switch are greater than a predetermined value. Since a stopper that restricts the movement of the pedal is provided, the pedal position can be raised without being affected not only by the displacement of the pedal in the left and right direction, but also by the mounting error and displacement of the sensing plate and the proximity switch. It can be detected with accuracy. Moreover, since no connecting member such as a link rod is used, it is advantageous in terms of space and layout.

[Brief description of drawings]

FIG. 1 is a configuration side view showing an embodiment of the present invention.

FIG. 2 is likewise an operation explanatory view.

FIG. 3 is a configuration perspective view illustrating a conventional device.

[Explanation of symbols]

 10 pedal 12 pedal arm 14 proximity switch 17 sensing plate 19 spring 20 stopper

Claims (1)

[Scope of utility model registration request] 1. A proximity switch facing the operation direction of the pedal is provided on either the vehicle body side or the pedal side, and a sensing plate facing the proximity switch is provided on the other side at a predetermined pedal position substantially parallel to the proximity plate. While supporting the proximity switch so that it can move freely in the direction of approach, the spring that biases the sensing plate to the initial position toward the proximity switch and the proximity between the sensing plate and the proximity switch are restricted from reaching a predetermined amount or more. A pedal position detecting device for a vehicle, comprising a stopper.