JPH0537295Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is used for accelerators, brakes,
This invention relates to a foot pedal that can be adjusted forward and backward to operate a clutch, etc.

[Prior Art] Generally, the accelerator, brake, clutch, etc. of an automobile are operated using a foot pedal. Conventionally,
This foot-type pedal has an arm rotatably supported on a bracket fixed to the vehicle's dash panel, and a rod or wire connected to the accelerator, brake, or clutch is connected near one end of the arm, and the other end is connected to a rod or wire that connects to the accelerator, brake, or clutch. A pedal is attached to the part, and when the driver presses the pedal with his foot, a rod or wire is pushed or pulled to operate the accelerator, brake, or clutch.

By the way, since the height of the pilot varies from person to person, he or she may not be able to reach the pedals with his or her feet.In such cases, the seat can be adjusted by sliding it forward. Also, if you are taller than the standard, you will have to slide the seat backwards. If the seat is slid backwards, the leg space for the person sitting in the rear seat becomes narrower, making the seat uncomfortable. However, when the seat is slid in this manner, the viewing point of the pilot naturally changes, so the viewing point varies depending on individual differences in height. In the same vehicle, it is inherently undesirable for the viewing point to change every time the driver changes, as this changes the viewing angle and causes a difference in the width and narrowness of the field of view.

Therefore, there are known configurations in which the pedals can be adjusted back and forth in order to change the position of the pedals without sliding the seat (for example, Japanese Patent Publications No. 50-6694, No. 50-34814, and other U.S. (See Patent No. 3151499, Patent No. 3563111, etc.)

[Problems to be solved by the invention] However, according to the above-mentioned conventional example, the structure tends to be complicated, leading to high costs, and
Although there are problems with maintenance and there are simple configurations, it is questionable whether or not safety can be ensured sufficiently in actual use, regardless of theory, and thus, actual use is possible. It can be said that it has not yet been completed.

However, in this day and age of advanced automobiles, it can no longer be said that it is desirable to operate the pedals by adjusting individual differences in height by sliding the seat, due to the above-mentioned circumstances.

Therefore, in view of the above-mentioned circumstances, this invention was made for the purpose of providing an adjustable pedal that can be practically used and can be adjusted back and forth.

[Means for Solving the Problems] In order to solve the above problems, this invention has a bracket fixed to the vehicle body, a holder rotatably biased and pivotally supported by the bracket, and a holder mounted horizontally on the holder. A pair of elongated holes opened in parallel with each other at a constant interval in upper and lower stages, a pedal arm suspended from a holder so as to be movable in parallel via pins that engage with the elongated holes, and the pins. an adjustment lever that is rotatably supported on the holder and has an arcuate elongated hole with which one of the levers is engaged; A foot-operated pedal that can be adjusted forward and backward is made up of a rocking lever having a long hole that engages with a provided shaft, an operating rod connected to the shaft of the adjustment lever, and a drive means for moving the pedal arm back and forth. A bracket that is fixed to the vehicle body, a holder that is rotatably biased and pivotally supported by the bracket, and a holder that is installed horizontally in two stages above and below at a constant interval and parallel to the holder. a pair of elongated holes, a pedal arm suspended from the holder so as to be movable in parallel via pins that engage with the elongated holes, and an arcuate elongated hole that engages with one of the pins. an adjustment lever that is rotatably supported on the rotational axis of the holder and that has an end that abuts a spring that biases the holder to rotate; , a swinging lever having a long hole with which a shaft provided on the adjustment lever engages, an operating rod connected to the shaft of the adjustment lever, and a driving means for moving the pedal arm back and forth, and is adjustable back and forth. It consists of a foot pedal.

[Function] According to the above structure of this invention, when the pedal arm is translated in parallel to a desired position back and forth via the drive means, the adjustment lever rotates following the movement of the pedal arm and is connected to the adjustment lever. The ratio at which the swinging lever rotates to push or pull the operating rod connected to the adjustment lever is always constant even if the position of the pedal arm changes. Further, the position of the pedal pad is always maintained at a constant height.

[Example] Next, an example of this invention will be described based on the drawings. 1 and 2 show a first embodiment implemented on a brake pedal, in which a substantially triangular holder 3 is rotatably supported via a shaft 2 on a bracket 1 fixed to a vehicle body such as a dash panel. There is. A return spring 4 is wound around the shaft 2 and applies a rotational force to the holder 3 in the counterclockwise direction shown in the figure. A shaft 5 is provided protruding from the holder 3, and an adjustment lever 6 is rotatably supported on the shaft 5. Adjustment lever 6
A long hole 9a is bored in the swing lever 9 connected to the
The shaft 10 of the adjustment lever 6 is engaged with the elongated hole 9a. An end portion 12 of an operating rod 11, such as a brake operating rod, is rotatably connected to the swing lever 9 via a shaft 10. The adjustment lever 6 has a substantially arcuate shape, and has an arcuate long hole 6 in its long protruding arcuate part.
A is provided. The curvature of this arcuate elongated hole 6a is not constant, and the distance DS between the shaft 2 and the shaft 10 changes proportionally to the change in the distance DL between the centers of the shaft 2 and the pedal pad 27,
Even when the position of the lever is adjusted by moving back and forth, a constant lever ratio is maintained and the force applied to the operating rod 11 is kept constant. Further, a spring hooking protrusion 13 is formed on a part of the adjustment lever 6, and the spring hooking protrusion 1
A spring 15 is elastically loaded between the bracket 1 and the spring hooking protrusion 14 of the bracket 1. Spring 15
is provided to hold the center of gravity of the holder 3 at a predetermined position. On the other hand, the holder 3 has two parallel elongated holes 16, 16a opened in the width direction, extending in the width direction with a certain interval, and the elongated holes 16, 16a are engaged with the elongated holes 16, 16a, respectively. A pedal arm 18 is connected so as to be movable in parallel via slidable pins 17, 17a. One pin 17 is engaged with the arc-shaped elongated hole 6a of the adjustment lever 6.
A screw nut 19 is fixed to the pedal arm 18, and a screw rod 20 that is screwed into the screw nut 19 is attached to the rear wall portion 2 of the holder 3.
1 and a corresponding gear housing 22 fixed on the front side. A worm wheel 23 is housed in the gear housing 22 by being pivotally attached to the end of the screw rod 20, and a worm 24 meshes with the worm wheel 23.
A motor unit 26 serving as a driving means is connected to the worm 24 via a flexible shaft 25. Motor unit 26
is fixed to the outer surface of the bracket 1, and is configured so that its forward and reverse rotation output can be transmitted to the screw rod 20 by operating a switch. Note that a pedal pad 27 is attached and fixed to the lower end of the pedal arm 18 in the drawing. Furthermore, 28,2
9 is a stopper that restricts the movement of the holder 3 when the return spring 4 is restored.

Next, the operation of the above embodiment will be explained. First, if the position of the pedal pad 27 is not adjusted back and forth, the pedal arm 1 is in the state shown by the solid line in FIG.
8, the pins 17 and 17a are connected to the elongated holes 16 and 1, respectively.
6a, and the pin 17 is located at the leftmost end of the arc-shaped elongated hole 6a of the adjustment lever 6. Therefore, in this state, the pedal pad 27
When you step on the pedal, the pedal arm 18 and the holder 3 rotate as a unit around the shaft 2 in the clockwise direction shown in the figure, as shown by the imaginary line, and the swing lever 9 is pushed to the left in the figure, allowing operation. Push rod 11 to the left. Also, when you take your foot off the pedal pad 27, the pedal arm 18 and holder 3 are integrated, and the return spring 4
Return to the original state with the force of.

To adjust the position of the pedal pad 27, move the pedal arm 1 as shown in FIG.
8 to the operator side. That is, in FIG. 1, the switch for starting the motor unit 26 in forward rotation is appropriately selected and operated, the screw rod 20 is rotated in the forward direction, and the position of the screw nut 19 is moved in a direction parallel to the elongated holes 16, 16a. . When screw nut 19 moves, pin 1
7 and 17a move rearward (to the right in the figure), the pin 17 moves to the right along the arcuate elongated hole 6a, which causes the adjustment lever 6 to move counterclockwise in the figure with the shaft 5 as the center. Rotate. Then, at the same time as this pin 17 moves along the shape of the arcuate long hole 6a, the shaft 10 moves downward through the long hole 9a of the swing lever 9, so that the distance DS between the shafts 2 and 10 and the shaft 2 The distance DL between the centers of the pedal pads 27 is
Since DS changes in proportion to the length of DL, the lever ratio of the pedal arm 18 does not change. In other words, no matter where the pin 17 is located in the arcuate elongated hole 6a, DS changes in the same way and the lever ratio remains constant. In addition,
During the movement of the shaft 7, the tension spring 15 acts, and the tension spring 15 supports the weight of the holder 3, the adjustment lever 6 and the pedal arm 18 loaded thereon, and holds the holder 3 in place. This eliminates the load on the return spring 4 and makes the spring force acting on the pedal arm 18 constant. Thus, after the position of the pedal pad 27 has been moved and adjusted, when the pedal pad 27 is depressed with the foot, the pedal arm 18 and the holder 3 are integrated and moved around the shaft 2 as shown by the imaginary line in FIG. It rotates clockwise, rotates the swing lever 9 clockwise in the figure, and pushes and moves the operating rod 11 to the left in the figure. In this case, when the pedal arm 18 rotates around the shaft 2, the pins 17, 17a move in vectors A, B in the arrow direction with respect to the elongated holes 16, 16a.
act in opposite directions and cancel each other out, so the pins 17 and 17a do not slide along the elongated holes 16 and 16a, and the pedal arm 18 has no rotation around either pin 17 or 17a. Do not cause Thus, by rotating the holder 3 integrally with the pedal arm 18 around the shaft 2, the operation is almost the same as in the normal state, and the force applied to the operating rod 11 is the same as in the unadjusted state. can be kept. When the foot is removed from the pedal pad 27, the pedal arm 18 rotates integrally with the holder 3 about the shaft 2 in the counterclockwise direction shown in the drawing, returning to the original state shown by the solid line. In order to return the pedal arm 18 to the state shown by the solid line in FIG. 1, it is sufficient to start the motor unit 26 in reverse rotation. In addition, the pedal arm 18
It goes without saying that the parallel movement of the holder 3 may be detected by limit switches provided at the front and rear of the holder 3, or may be regulated using a potentiometer equipped with a lever that can move integrally with the pedal arm 18.

FIG. 4 shows a second embodiment of this invention, and the main difference between this embodiment and the first embodiment is that an extending portion 6b is integrally formed at one end of the adjustment lever 6, so that the holder 3 can be rotated. A biasing return spring 4 is brought into contact with the end, and the other configuration is the first one.
Since it is the same as the embodiment, the same parts will be denoted by the same reference numerals and redundant explanation will be omitted. Therefore,
According to this second embodiment, although its function is the same as that of the first embodiment, the adjustment lever 6
The tension spring 15 that biases the holder 3
Since I replaced it with a return spring 4 that biases the rotation,
The number of parts can be omitted.

[Effects of the invention] According to the invention explained above, the pedal arm can be adjusted in parallel by moving forward and backward, and even if the pedal arm moves, the ratio at which the operating rod is pushed or pulled by the adjustment lever that is linked to it is always constant. Therefore, when used as an operating lever for the accelerator, brake, or clutch of a car, the pedal arm can be adjusted back and forth, eliminating operational inconveniences due to individual differences in height and differences in viewing points in the same car. This can ensure safe driving. As the pedal arm moves back and forth, the adjustment lever displaces the position of the connection part of the operating rod and changes the rotation radius of the operating rod, making it easy to maintain a constant lever ratio of the pedal arm. Since the operating rod is directly operated using the adjustment lever, there is little vector loss. Moreover, since the pedal arm is translated in parallel via the pin that engages with the elongated hole, the position of the pedal pad is always at the same level, and the operating feeling does not change, so it is extremely safe. In addition, a pair of pins that engage with a pair of elongated holes in the lever are provided separately on the pedal arm, so even when the pedal arm is rotated, the pins do not slide through the elongated holes, and the operation lever is can operate reliably. Further, since the adjustment lever is formed with an end portion that comes into contact with a spring that biases the holder to rotate, it is possible to eliminate the need for a dedicated tension spring, thereby reducing the number of parts.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional side view showing the first embodiment of this invention, Fig. 2 is a front view, Fig. 3 is an explanatory view of the operation, and Fig. 4 is a cross-sectional side view showing the first embodiment of this invention.
The figure is a cross-sectional side view showing the second embodiment. 1...Bracket, 2...Shaft, 3...Holder, 4...Return spring, 6...Adjustment lever, 6
a... arcuate elongated hole, 6b... extension part, 9... rocking lever, 11... operating rod, 15... tension spring,
16, 16a... Long hole, 17, 17a... Pin,
18...Pedal arm, 27...Pedal pad.

Claims (1)

[Scope of claim for utility model registration] (1) A bracket fixed to the vehicle body, a holder rotatably biased and pivotally supported by the bracket,
The holder is suspended from the holder so as to be movable in parallel through a pair of elongated holes opened horizontally in the holder in two stages, upper and lower, at a constant interval, and pins respectively engaged with the elongated holes. a pedal arm, an adjustment lever having an arcuate elongated hole with which one of the pins engages and rotatably supported on the holder; and a lever rotatably supported coaxially with the rotation axis of the holder. The pedal arm also includes a swinging lever having a long hole that engages with a shaft provided on the adjustment lever, an operating rod connected to the shaft of the adjustment lever, and a drive means for moving the pedal arm back and forth. Features a foot pedal that can be adjusted forward and backward. (2) a bracket fixed to the vehicle body; a holder rotatably biased and pivotally supported by the bracket;
The holder is suspended from the holder so as to be movable in parallel through a pair of elongated holes opened horizontally in the holder in two stages, upper and lower, at a constant interval, and pins respectively engaged with the elongated holes. an adjustment lever having a pedal arm and an arcuate elongated hole that engages with one of the pins, is pivotably supported on a holder, and has an end that abuts a spring that biases the holder to rotate; a swinging lever that is rotatably supported coaxially with the rotational shaft of the holder and has a long hole that engages with a shaft provided in the adjustment lever; What is claimed is: 1. A foot-type pedal that can be adjusted forward and backward, comprising an operating rod and a drive means that moves the pedal arm back and forth.