JPH0710750U - Pedal pressure adjustment device - Google Patents

Abstract

(57) [Summary] [Purpose] When a brake pedal operation ability measuring device or a similar device is operated, a reaction force is applied and a reaction force is applied so that a pedaling force similar to that in the case of an actual automobile is required. The force can be adjusted arbitrarily. [Structure] A cylinder device 6 operable in conjunction with a pedal 2, and an accumulator 8 connected to the cylinder device 6.
And a pedal effort adjusting device including a pressure adjusting device 9 for adjusting the pressure applied to the cylinder device 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pedal effort adjusting device, and more particularly, to a device for arbitrarily adjusting a reaction force to a pedal effort in a brake pedal operation measuring device or the like.

[0002]

[Prior art]

 Conventionally, the brake pedal operation measuring device has been used to judge and evaluate the basic driving ability for the elderly and persons with physical disabilities. In such a conventional brake pedal operation measuring device, a brake pedal is arranged imitating a driver's seat of an automobile and a seat and a lower front portion thereof, and the brake pedal is operated in conjunction with a measuring device using a spring device. It was installed. As a result, when the subject depresses the brake pedal, it is possible to measure and determine how much pedaling force the subject has, and evaluate the result.

By the way, when a brake pedal is depressed in an actual automobile, for example, in the case of a drum brake, it is well known that a predetermined pedal force is required to press the brake shoe against the inner surface of the rotating drum to stop the brake shoe. . Then, at this time, immediately when the brake shoe is pressed against the inner surface of the drum, a reaction force corresponding to the pressing force is exerted on the brake pedal.

It is desirable that the conventional brake pedal operation ability measuring device be as similar to the brake pedal state in an actual vehicle as possible. Therefore, a repulsive force generating device using a spring or the like is provided in the brake pedal to provide an actual automobile. A reaction force similar to the above is applied to the pedal, in other words, a predetermined pedal force is required when the brake pedal is depressed.

[0005]

However, in the case of the conventional brake pedal operation ability measuring device, since the reaction force exerted on the pedal is due to the spring force, the reaction force is the same as in the case of an actual automobile. Since no force can be applied, there is a problem in that the measured result of the subject's brake pedal operating ability, that is, the pedal effort, is slightly different from that in the case of actual vehicle brake pedal operating.

Therefore, it is necessary to make the brake pedal in the device for measuring the ability to operate the brake pedal, etc., to have the same pedaling force as the brake pedal of an actual vehicle, so that the steering wheel operation capacity of the subject can be improved. It was also desired to properly judge.

The object of the present invention is to solve the above-mentioned conventional problems. For example, even when operating a pedal in a brake pedal operation ability measuring device or a similar device, it is different from the case of an actual automobile. It is an object of the present invention to provide a pedal effort adjusting device that applies a reaction force so that the same pedal force is required and that can adjust the reaction force arbitrarily.

[0008]

[Means for Solving the Problems]

 The present invention has solved the above-mentioned technical problems by the following configurations. That is, the present invention is an apparatus capable of applying a reaction force so as to press the pedal with a necessary pedal force and adjusting the reaction force arbitrarily in, for example, a brake pedal operation ability measuring device.

The pedal effort adjusting device of the present invention is a cylinder device 6 operable in conjunction with the pedal 2, an accumulator 8 connected to the cylinder device 6, and a pressure adjusting device for adjusting the pressure applied to the cylinder device 6. And device 9.

In the pedal effort adjusting device of the present invention, the pressure adjusting device 9 is installed between the accumulator 8 and the pressure supply source 10 connected to the accumulator 8 to control the original pressure to obtain a desired pressure. It is characterized by comprising an electromagnetic pressure adjusting valve 12 which is adjusted to 1. and an electromagnetic valve 11 which prevents fluctuations in pressure and flow rate during operation of the pedal effort adjusting device 1.

Further, the pedal effort adjusting device of the present invention is characterized in that the electromagnetic pressure adjusting valve 12 can be remotely controlled, and the pedal effort adjusting device 1 is used in a brake pedal operation measuring device. It is also characterized by applying the same reaction force as the actual vehicle to the brake pedal of the measuring device.

[0012]

[Action]

 In the pedal depression force adjusting device of the present invention, when the subject depresses the pedal 2, the cylinder device 6 is operated in conjunction with this, and the depression amount of the pedal 2 is replaced by a change in pressure in the cylinder device 6. The changes in pressure and volume generated in the cylinder device 6 are accumulated in the accumulator 8 by the communication passage connected to the cylinder device 6.

On the contrary, the pressure accumulated in the accumulator 8 acts on the cylinder device 6, so that a reaction force is applied from the cylinder device 6 to the pedal 2. That is, when the pedal of the cylinder device 6 is moved by pressing the pedal 2, the accumulated pressure of the accumulator 8 reversely pushes back the piston of the cylinder device 6, and the restoring force of this piston is transmitted to the pedal 2.

However, in order to make the pedaling force exerted on the pedal 2 the same as in the case of an actual automobile, it is necessary to initialize the pressure in the cylinder device 6 so as to generate a predetermined reaction force. Therefore, the initial pressure of the cylinder device 6 is set by the pressure adjusting device 9. The pressure in the cylinder device 6 is set by the pressure adjusting device 9 by operating the electromagnetic pressure adjusting valve 12 so that the pressure supply source 10 communicates with the cylinder device 6.

[0015]

【Example】

 Hereinafter, the pedal effort adjusting device of the present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 shows a brake pedal operation ability measuring device A using a pedal effort adjusting device 1 according to an embodiment of the present invention.

The brake pedal operation ability measuring device A includes a load sensor 4 which is connected to the brake pedal 2 and is attached to the tip of an operating rod 3 which moves linearly when the pedal 2 is stepped on. A displacement sensor 5 that detects the amount of depression of the pedal 2 is attached to the end of the operating rod 3.

The operation rod 3 connected to the brake pedal 2 is connected to the piston rod 6 a of the cylinder device 6 via the load sensor 4. An oil is put inside the cylinder device 6, and the cylinder device 6 is connected to an accumulator 8 by a hydraulic circuit 7. The volume of the accumulator 8 is set to be the same as that of the cylinder device, and the inside thereof is filled with nitrogen gas N ₂ .

A pressure adjusting device 9 is further connected to the accumulator 8. This pressure adjusting device 9 is for setting the initial pressure in the cylinder device 6, and is a pressurizing pump 10 which is a hydraulic pressure supply source, and a hydraulic circuit which connects the pressurizing pump 10 and the accumulator 8 to each other. The electromagnetic valve 11 and the electromagnetic pressure regulating valve 12 which can be remotely controlled are installed.

The load sensor 4 and the displacement sensor 5 are electrically connected to the control device 13, respectively. The control device 13 receives signals from the sensors 4 and 5 and performs necessary processing, and outputs these as output signals to a treading force indicator 14, a treading amount indicator 15, a printer (not shown), etc. The indicators 14 and 15 indicate the pedaling force and the pedaling amount by a digital or LED, respectively, or a printer prints a record. Further, the control device 13 outputs a pressure setting signal to the pressure adjusting device 9, and operates the electromagnetic pressure adjusting valve 12 described later based on the pressure setting signal.

Next, the operation of the brake pedal operation ability measuring device A configured as described above will be described. When the examinee depresses the brake pedal 2, the operating rod 3 moves to operate the load sensor 4 and the displacement sensor 5, and the detection signals are output to the control device 13.

This movement of the operating rod 3 pushes in the piston 6 b of the cylinder device 6 via the load sensor 4. As a result, the oil in the cylinder device 6 into which the piston 6b is pushed flows into the accumulator 8 and is accumulated by compressing the nitrogen gas in the accumulator 8 and exerts its reaction force on the oil.

This reaction force acts on the brake pedal 2 via the piston 6 b of the cylinder device 6, and as a result, becomes a resistance force against the pedaling force of the pedal 2. This reaction force depends on the accumulated pressure of the accumulator 8. Therefore, in order to reproduce this in the same way as in an actual automobile, it is necessary to set the initial pressure to the oil in the hydraulic circuit 7 such as the cylinder device 6 and the accumulator 8.

Therefore, when the pedaling force is not applied to the brake pedal 2, the pressure adjusting device 9 is operated to apply the initial pressure to the oil in the cylinder device 6. The operation of the pressure adjusting device 9 will be further described. The electromagnetic pressure adjusting valve 12 is a valve that can be operated from a remote position by an electric signal and that controls the original pressure to adjust it to a desired pressure (secondary pressure). The residual pressure is returned to the tank (not shown) via the reservoir 16.

On the other hand, the solenoid valve 11 is opened to introduce pressurized oil from the hydraulic pressure supply source when initializing the internal pressure of the cylinder device 6 as described above, and is returned to the closed state after the pressure is set. In order to prevent fluctuations in pressure and flow rate when the brake pedal operation ability measuring device A is in operation.

By thus initially setting the pressure in the cylinder device 6, a certain reaction force is applied to the pedal 2 immediately after the brake pedal 2 is depressed and the piston 6b of the cylinder device 6 starts to move. To be done.

As a result, a predetermined reaction force can be applied to the brake pedal 2. Therefore, by properly initializing the pressure in the cylinder device 6 by the electromagnetic pressure adjusting valve 12 of the pressure adjusting device 9, the brake pedal 2 can be reproduced as in an actual vehicle. Further, since the electromagnetic pressure control valve 12 can be remotely operated, the pressure in the cylinder device 6 can be easily and arbitrarily set, and the limit of the treading force of the subject can be detected. You can also

In the pedal depression force adjusting device 1 of the above-described embodiment, oil is described as an example of the pressure medium used in the cylinder device, but the present invention is not limited to oil and may be air pressure or the like. Needless to say.

Further, in the above-mentioned embodiment, the case where the pedal depression force adjusting device of the present invention is used for the brake pedal operation ability measuring device has been described, but the present invention is applicable to such a measuring device. The present invention is not limited to the above, and can be widely used in vehicle driving simulation devices and similar devices.

[0029]

[Effect of device]

 According to the pedal effort adjusting device of the present invention, for example, when the device is used for a brake pedal operation ability measuring device for an elderly person or a person with a physical disability, it is possible to reproduce a reaction force similar to that of an actual vehicle. , It is possible to know the subject's practical brake pedal operation ability.

Further, according to the pedal effort adjusting device, the reaction force applied to the pedal can be arbitrarily set by the pressure adjusting device, so that the limit of the pedal effort of the subject can be detected.

[Brief description of drawings]

FIG. 1 is a structural explanatory view schematically showing a structure of a pedal effort adjusting device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Pedal force adjusting device 2 Pedal 3 Actuating rod 4 Load sensor 5 Displacement sensor 6 Cylinder device 6a Piston rod 6b Piston 7 Hydraulic circuit 8 Accumulator 9 Pressure adjusting device 10 Pressure supply source 11 Electromagnetic valve 12 Electromagnetic pressure adjusting valve 13 Control device 14 Treading force indicator 15 Stepping amount indicator

Continuation of front page (72) Keiichi Kojima, 1-6-23 Kawa, Yokosuka City, Kanagawa Prefecture Sozo Co., Ltd.

Claims (4)

[Scope of utility model registration request] 1. A cylinder device (6) operable in conjunction with a pedal (2), an accumulator (8) connected to the cylinder device (6), and a pressure applied to the cylinder device (6). Pressure adjusting device (9) for adjusting the pedal effort. 2. The electromagnetic device, wherein the pressure adjusting device (9) is installed between the accumulator (8) and a pressure supply source (10) connected to the accumulator (8), and controls the original pressure to adjust it to a desired pressure. The pedal effort adjusting device according to claim 1, comprising a pressure adjusting valve (12) and an electromagnetic valve (11) for preventing fluctuations in pressure and flow rate during operation of the pedal effort adjusting device. 3. The pedal effort adjusting device according to claim 2, wherein the electromagnetic pressure adjusting valve (12) is remotely controllable. 4. The pedal depression force adjusting device according to claim 1, wherein the pedal depression force adjusting device is used in a brake pedal operation measuring device, and a reaction force similar to that of an actual vehicle is applied to a brake pedal of the measuring device. apparatus.