JP3741456B2 - Pedal position detection device for automobile operation - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a position detection device for an automobile operation pedal.
[0002]
[Prior art]
A pedal position detection device for operating an automobile is known, but a typical technique is described in, for example, Japanese Utility Model Laid-Open No. 1-135519. This technique will be described with reference to FIG. A connecting rod 3 is provided via a ball joint 2 at an intermediate portion of the pedal 1 position disposed below the driver's seat, and the other end of the connecting rod 3 is pivotally supported by the airframe so as to be swingable. Is rotatably connected to. On the other hand, a proximity switch 7 is provided on the airframe via a bracket 6, and the proximity switch 7 is disposed on the side surface of the sensing plate 4.
[0003]
In such a conventional technique, when the pedal 1 is depressed and the swinging operation is performed in the α direction in FIG. 1, the sensing plate 4 swings in conjunction with each other, and the movement of the sensing plate 4 is detected by the proximity switch 7. It has become.
[0004]
In such an apparatus, since the sensing plate 4 approaches the proximity switch 7 from the side, there is a disadvantage that the detection position does not correspond to the predetermined target position due to an error or deviation of the detection gap.
[0005]
Further, in the above technique, since the pedal 1 and the sensing plate 4 are connected by the ball joint 2, the pedal 1 has a drawback that the detection position does not correspond to the predetermined target position due to the arrow β, that is, the displacement in the left-right direction.
[0006]
In addition, such a conventional technique requires a space for providing the ball joint 2, a swing mechanism for the sensing plate 4, and the like.
[0007]
[Problems to be solved by the invention]
The present invention was invented to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to reduce errors in the detection distance between the sensing plate and the proximity switch in the pedal position detection device, The object is to avoid the influence of displacement in the left-right direction, to save space, and to provide an inexpensive and highly reliable pedal position detection device.
[0008]
[Means for Solving the Problems]
According to the present invention, in the pedal position detection device in which the proximity switch (12) is provided in the vicinity of the pedal (1) on the body (10) side of the vehicle body, the pedal (1) is integrated with the pedal (1) at the upper portion of the pedal (1). A bracket (1s) is provided, and an end of the bracket (1s) is provided with a sensing plate (4) via a spring (9), and the spring (9) is accommodated in the cylinder unit (8). The sensing plate (4) is provided to the cylinder unit (8) so as to be able to advance and retract in the swinging direction of the pedal (1), and the pedal (1) of the pedal (1) corresponds to the swinging locus of the sensing plate (4). A proximity switch (12) is disposed on the front body (10) via a bracket (11), and a protective cover is provided at a position facing the sensing plate (4) in front of the proximity switch (12). Chromatography (13) is provided.
[0010]
In this case, it is preferable that the storage amount of the cylinder unit has a stroke larger than the amount of movement corresponding to the pedal depression amount after the sensing plate comes into contact with the protective cover.
[0011]
[Action]
According to the present invention, when the pedal is depressed, the sensing plate approaches the proximity switch and detects the movement of the pedal. Since the sensing plate remains in contact with the protective cover even after the detection position, the detection distance is kept constant, and the pedal can be further displaced in the stepping direction by a sliding mechanism by expansion and contraction of the spring.
[0012]
When the pedal is returned, the sensing plate is separated from the proximity switch and the detection is completed.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
FIG. 1 shows an embodiment of the present invention. A pedal 1 has the same configuration as that of the prior art shown in FIG. In this embodiment, a bracket 1 s integrated with the pedal 1 is provided above the pedal 1, and a sensing plate 4 is provided at the end of the bracket 1 s via a spring 9.
[0015]
If the attachment position of the sensing plate 4 is too close to the stepped portion, it may be kicked by the foot and cause a malfunction. On the other hand, if it is too close to the support shaft of the pedal 1, it is not preferable because there is a possibility that erroneous detection may occur because the movement amount is small.
[0016]
The spring 9 is housed in a cylinder unit 8, and a sensing plate 4 is provided to the cylinder unit 8 so as to be able to advance and retreat by piston movement in the swinging direction of the pedal 1.
[0017]
In this case, it is preferable that the storage amount of the cylinder unit 8 has a stroke larger than the amount of movement corresponding to the pedal depression amount after the sensing plate 4 comes into contact with a protective cover 13 described later.
[0018]
On the other hand, a proximity switch 12 is disposed on the airframe 10 in front of the pedal 1 via a bracket 11 in a form corresponding to the swinging locus of the sensing plate 4, and in front of the proximity switch 12, that is, at a position facing the sensing plate 4. A protective cover 13 is provided.
[0019]
That is, when the driver depresses the pedal 1 and the cylinder unit 9 moves and reaches the front position (9a), the sensing plate 4 also rotates forward. As a result, the sensing plate 4 contacts the protective cover 13. The pedal 1 is detected at the position (4a). By this detection, for example, a tail lamp indicating a brake operation is turned on.
[0020]
In the above operation, the protective cover 13 is provided to prevent the proximity switch 7 from being damaged even if the sensing plate 4 does not slide in the cylinder unit 8. In this case, the plate thickness of the protective cover 13 makes the proximity distance constant.
[0021]
In the above operation, when the pedal 1 is depressed, the pedal 1 senses the position of the pedal 1a. Even if the pedal 1 is further depressed to reach the position of the pedal 1b, even if the sensing plate 4 moves further forward and passes the detection position, the sensing plate 4 is stopped by the protective cover 13, so that the detection distance is reduced. Kept constant. When the pedal 1 is returned to the opposite side to the α direction, the sensing plate 4 is separated from the proximity switch 12 and the detection is stopped.
[0022]
In the above configuration, the second switch 14 may be separately attached to the pedal 1 or the bracket 1s to perform other detection or switch operation.
[0023]
【The invention's effect】
According to the present invention, the above-described configuration provides the following effects.
(1) Since the sensing distance is regulated by stopping the movement of the sensing plate with the protective cover, the detection distance error is small.
(2) Even if the pedal is displaced in the left-right direction, the sensing distance does not change because the sensing plate and the petal are integral and there is no relative movement.
(3) Since there is no ball joint or sensing plate swing mechanism, it is compact and has a high degree of freedom in arrangement.
(4) Since the structure is simple, the cost is low.
(5) Since the sensing plate and the proximity switch are not in direct contact with the protective cover, the proximity switch will not be damaged even if the sensing plate is shocked by back-and-forth movement or if the sensing plate is stuck to the protective cover. .
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment according to the present invention.
FIG. 2 is a side view showing a conventional technique.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Pedal 2 ... Ball joint 3 ... Connecting rod 4 ... Sensing plate 5 ... Pedal position detector 6 ... Bracket 7 ... Proximity switch 8 ... Cylinder unit 9・ ・ Spring 10 ・ ・ Airframe 11 ・ ・ Bracket 12 ・ ・ Proximity switch 13 ・ ・ Protective cover 14 ・ ・ Second switch

Claims (1)

In the pedal position detection device in which the proximity switch (12) is provided near the pedal (1) on the body (10) side of the vehicle body, a bracket (1s) integrated with the pedal (1) is provided above the pedal (1). A sensing plate (4) is provided at the end of the bracket (1s) via a spring (9), and the spring (9) is housed in a cylinder unit (8). The cylinder unit (8) The sensing plate (4) is provided so as to be movable back and forth in the swinging direction of the pedal (1), and the airframe (10) in front of the pedal (1) corresponding to the swinging locus of the sensing plate (4). The proximity switch (12) is disposed through the bracket (11), and a protective cover (13) is provided at a position facing the sensing plate (4) in front of the proximity switch (12). Pedal position detection apparatus characterized by being.

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