JPH09272360A - Detection device of accelerator operation amount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a turning mechanism compact, reduce the number of parts and a processing manhour remarkably and also improve the workability at the production and assembly time, by making the other end side of a turning shaft to a free end. SOLUTION: A turning mechanism 31 is composed of a casing 32, a turning shaft 37, a wire drum 38 and a connection plate 41 The turning shaft 37 is supported turnably through a bearing 33 in a shaft insertion hole 32A and a bush 36 in a support cylinder 35. The wire drum 38 connected to an acceleration pedal through a wire is fixed on the screw part 37D of the turning shaft 37. Further, a hiss generator 46 and the connection plate 41 are installed on the screw part 37c. A turning angle sensor 27 is installed on the installation part 32B of the casing 32 and its detection lever is connected to the connection plate 41. A return spring 43 is installed between the wire drum 38 and the casing 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accelerator operation amount detection device suitable for detecting an operation amount with respect to an accelerator pedal of an automobile or the like.

[0002]

2. Description of the Related Art Here, a conventional accelerator operation amount detecting device will be described with reference to FIGS.

In the figure, reference numeral 1 denotes an accelerator pedal operated by a driver, such as an automobile, for accelerating and decelerating the vehicle. The accelerator pedal 1 is arranged inside the vehicle at the foot of a driver's seat and is depressed by the driver. It is rotated around the shaft portion 1A by an operation.

Reference numeral 2 denotes a rotating mechanism connected to an accelerator pedal 1 via a wire 12 which will be described later. The rotating mechanism 2 is, as shown in FIG. A rotation shaft 10 described later that is supported, and the rotation shaft 10
Is roughly configured by a wire drum 11 described later that rotates the gear according to the operation amount of the accelerator pedal 1.

Here, the casing 3 as a whole is "ko".
It has a character shape and has one side arm portion 4 and the other side arm portion 5. Then, in the one side arm portion 4 and the other side arm portion 5, shaft insertion holes 4A, 5A are formed as stepped holes so as to be concentric with each other, and constitute a bearing portion of the rotating shaft 10. . A bearing 6 and an annular retainer 7 are mounted in the shaft insertion hole 4A, and a bearing 8 and a retainer 9 are mounted in the shaft insertion hole 5A.

Further, one side concave portion 4C opening to the one side end face 4B is formed on one side of the shaft inserting hole 4A so as to expand the diameter of the shaft inserting hole 4A, and the shaft inserting hole 5A is formed. Similarly, on the other side, another side concave portion 5C that opens to the other side end surface 5B is formed.

Reference numeral 10 denotes a rotary shaft which is rotated in accordance with the operation amount of the accelerator pedal 1. The rotary shaft 10 has a small-diameter shaft portion 10A on one end side and another end side of the small-diameter shaft portion 10A. The large-diameter shaft portion 10B is formed in a stepped shape, and the small-diameter shaft portion 10A and the large-diameter shaft portion 10B each have a threaded portion 1 on the tip side.
0C and 10D are integrally formed. And the rotating shaft 1
The small-diameter shaft portion 10A of 0 is rotatably supported in the shaft insertion hole 4A of the one-side arm portion 4 together with the cylindrical body 13 described later through the bearing 6, and the large-diameter shaft portion 10B is formed through the bearing 8 It is rotatably supported in the shaft insertion hole 5A of the other side arm portion 5.

Further, the small-diameter shaft portion 10A and the screw portions 10C and 10D of the rotating shaft 10 are formed so that the cross-sectional shape thereof is non-circular (for example, D-shaped), and they are formed on the outer peripheral side of the rotating shaft 10. The mounting plate 11 of the wire drum 11 which will be described later and is inserted
A, the connecting plate 15, the rotating plate 21, and the position adjusting plate 26 are restricted from rotating relative to the rotating shaft 10.

Reference numeral 11 indicates an accelerator pedal 1 together with a wire 12.
2 shows a wire drum which constitutes a connecting means for connecting the rotary shaft 10 to the rotary shaft 10. The wire drum 11 includes a substantially annular mounting plate 11A inserted into the outer peripheral side of the small diameter shaft portion 10A, and the mounting plate 1
A plurality of arm portions 11 protruding from the outer peripheral side of 1A in an L-shaped cross section
B (only one is shown) and a wire guide portion 11C that is fixed to the tip end side of each arm portion 11B and has a U-shaped cross section and extends in an arc shape around the rotating shaft 10. The wire drum 11 is fitted and fixed to the rotary shaft 10 via a mounting plate 11A.

A wire attachment portion 11D to which the proximal end side of the wire 12 (see FIG. 3) is attached is formed on one end side in the circumferential direction of the wire guide portion 11C, and the tip end side of the wire 12 is attached to the accelerator pedal 1. In this state, the accelerator pedal 1 and the wire drum 11 are connected.

Reference numeral 13 denotes a tubular body inserted into the outer peripheral side of the small diameter shaft portion 10A. The tubular body 13 has a connecting plate 15 sandwiched between a nut 14 whose one end face is screwed to the screw portion 10C. With the other end face sandwiching the mounting plate 11A of the wire drum 11 and the position adjusting plate 26, which will be described later, between the large-diameter shaft portion 10B,
These are positioned in the axial direction.

Reference numeral 15 denotes a connecting plate serving as a displacement transmitting means for transmitting the rotational displacement of the rotating shaft 10 to a later-described rotational angle sensor 27. The connecting plate 15 has a substantially L-shaped rotating lever 15A in cross section.
Is formed as a substantially annular body protruding from the outer peripheral side in one direction. The connecting plate 15 is located in the one side recessed portion 4C of the one side arm portion 4, is inserted into the outer peripheral side of the screw portion 10C, and is fitted and fixed to the rotating shaft 10 by the nut 14.

Reference numeral 16 denotes a return spring as an urging means,
The return spring 16 has the base end side attached to the spring attachment portion of the casing 3 and the tip end side attached to the spring attachment portion of the wire drum 11 (neither is shown). It always urges in the opposite direction. Then, the driver operates the accelerator pedal 1
3 is released, the accelerator pedal 1 is returned by the return spring 16 via the wire 12 and indicated by an arrow A in FIG.
The accelerator pedal 1 and the rotary shaft 10 are both returned to their initial positions by being urged in the direction.

Reference numerals 17 and 18 denote annular spring holders disposed between the cylindrical body 13 and the return spring 16 so as to be rotatable relative to each other. The spring holders 17 and 18 are wound around their outer peripheral sides. The return spring 16 is held in an aligned state, and when the return spring 16 bends, a part of the return spring 16 strongly contacts the one side arm portion 4 of the casing 3 and the mounting plate 11A of the wire drum 11. To prevent this.

Reference numeral 19 denotes a hiss generator as a resistance applying means for giving a frictional resistance to the rotating shaft 10, and the hiss generator 19
Is arranged in the other recess 5C of the other arm 5, and the nut 20
The ring-shaped rotary plate 21 fitted and fixed to the threaded portion 10D of the rotary shaft 10 is rotatably inserted to the outer peripheral side of the large-diameter shaft portion 10B, and is directed toward the rotary plate 21 by the corrugated washer 22. The rotating shaft 1 is sandwiched between the annular pressing plate 23, which is constantly urged, and the rotating plate 21 and the pressing plate 23, and the rotating shaft 1 is interposed via the rotating plate 21.
A plurality of friction rollers 24 and 2 which give a frictional resistance to the rotation of 0.
4, (only two are shown).

Reference numeral 25 is a cover attached to the other end surface 5B so as to shield the other recess 5C from the outside.
Reference numeral 5 prevents foreign matter such as dust from entering the hiss generator 19 and the like from the outside.

Reference numeral 26 is a position adjusting plate for adjusting the initial position of the rotating shaft 10. The position adjusting plate 26 has an inner peripheral side fitted and fixed to the small diameter shaft portion 10A of the rotating shaft 10 and an outer peripheral side. A contact portion (not shown) that contacts the initial position adjusting screw provided on the casing 3 side is provided. Then, when the adjusting screw is rotated in the forward and reverse directions by a manual operation or the like, the position adjusting plate 26 is rotated together with the rotating shaft 10 against the return spring 16, so that the accelerator pedal 1 is not operated. The initial position of the rotating shaft 10 (rotating angle sensor 27) is adjusted.

Reference numeral 27 denotes a rotation angle sensor as a rotation detection means for detecting the rotation displacement of the rotation shaft 10. The rotation angle sensor 27 has a bolt (see FIG. (Not shown) or the like. A detection lever (not shown) is rotatably provided on the rotation angle sensor 27, and the detection lever is connected to the rotation lever 15A of the connecting plate 15 to rotate integrally with the rotation shaft 10. To do.

As a result, the rotation angle sensor 27 detects each rotation of the rotation shaft 10 as the operation amount of the accelerator pedal 1 via the detection lever, and uses this as a detection signal from the connector portion 27A to a controller described later. It outputs to 28.

Reference numeral 28 denotes a controller constituted by a microcomputer or the like. As shown in FIG. 3, the controller 28 has an input side connected to a rotation angle sensor 27 (see FIG. 4) and an output side connected to a throttle valve (not shown). ) Is connected to the rotary actuator 29 which opens and closes. Then, the controller 28 controls the rotation angle sensor 27.
A drive signal corresponding to the detection signal from the rotary actuator 29 is output to the rotary actuator 29, and the rotary actuator 29 opens and closes the throttle valve with an opening degree corresponding to the operation amount of the accelerator pedal 1. As a result, the amount of intake air taken into each cylinder (not shown) of the engine 30 is increased or decreased according to the opening of the throttle valve, and the rotation speed of the engine 30 is accelerated or decelerated.

The accelerator operation amount detecting device according to the prior art has the above-mentioned structure, and its operation will be described below.

First, when the driver steps on the accelerator pedal 1 in the direction of arrow B in FIG.
By being pulled in the direction opposite to the direction, the rotating shaft 10 is rotationally displaced together with the wire drum 11 against the return spring 16. Since the detection lever of the rotation angle sensor 27 is rotationally displaced integrally with the rotation shaft 10 via the connecting plate 15, the rotation angle sensor 27 detects the rotation displacement of the rotation shaft 10 from the accelerator pedal 1. Is output as a detection signal to the controller 28.

[0023]

By the way, in the above-mentioned conventional technique, the rotating shaft 10 is supported at both ends by the one side arm portion 4 and the other side arm portion 5 of the casing 3, and the rotation angle sensor is provided. 27 is attached to the one end surface 4B of the one side arm portion 4 and the hiss generator 19 is provided on the other end surface 5B side of the other side arm portion 5, so that the axial dimension of the entire turning mechanism 2 is turned. The angle sensor 27, the hiss generator 19, and the like increase the size, and the mounting position is restricted to mount the rotating mechanism 2 on the engine room side of the vehicle, which makes it difficult to design the layout on the engine room side.

Further, in order to support the rotary shaft 10 at both ends, the bearings 6, 8 and the retainers 7, 9 are provided on one side arm portion 4,
It is necessary to separately provide the other side arm portion 5, and it is necessary to separately perform hole processing of the shaft insertion holes 4A, 5A and the like on the one side arm portion 4 and the other side arm portion 5, respectively. There is a problem that the number of parts of the mechanism 2 and the number of processing steps are increased, and the workability at the time of manufacturing and assembling is deteriorated.

The present invention has been made in view of the above-mentioned problems of the prior art. The rotating mechanism can be downsized, the degree of freedom of the mounting position can be increased, and the number of parts and processing man-hours can be reduced. It is an object of the present invention to provide an accelerator operation amount detection device capable of surely improving workability during assembly.

[0026]

In order to solve the above-mentioned problems, the present invention is directed to an accelerator pedal which is operated to accelerate or decelerate a vehicle, and to be rotated according to an operation amount of the accelerator pedal. The present invention is applied to an accelerator operation amount detection device including a rotation mechanism and a rotation detection unit that detects a rotation displacement of the rotation mechanism as an operation amount of the accelerator pedal.

In the invention according to claim 1, the casing is a casing having the bearing portion, and one side of the bearing portion serves as a mounting portion for mounting the rotation detecting means,
One end side is rotatably supported by the bearing portion of the casing, and the other end side is a free end, and the rotation shaft projects outward from the other side of the casing, and the other end side of the rotation shaft serves as the accelerator pedal. Connecting means for connecting and rotating the rotating shaft in accordance with the operation amount of the accelerator pedal, and a rotating displacement of the rotating shaft which is provided at one side of the casing and is provided at one end side of the rotating shaft. Is configured to include a displacement transmitting means for transmitting to the rotation detecting means.

With this structure, one end of the rotating shaft can be supported rotatably as a cantilever structure with respect to the bearing portion of the casing, and the entire rotating mechanism can be made compact. Since the rotating shaft is rotated by the connecting means on the other end side in accordance with the operation amount of the accelerator pedal, this rotating displacement is transferred to the casing one side via the displacement transmitting means on one end side of the rotating shaft. By transmitting the movement to the movement detection means, the rotation displacement of the rotation shaft can be reliably detected by the rotation detection means.

According to the second aspect of the present invention, a tubular support portion that axially protrudes from the bearing portion and rotatably supports the rotary shaft is integrally formed on the other side of the casing, On the other end side of the rotating shaft, the connecting means is provided at an end portion protruding from the supporting portion.

Thus, the rotating shaft can be stably supported by the supporting portion and the bearing portion of the casing, and the rotating shaft can be smoothly rotated through the connecting means when the accelerator pedal is operated.

Further, in the third aspect of the invention, a resistance is provided between the casing and the rotating shaft, which is located on one end side of the rotating shaft and provides frictional resistance to the rotation of the rotating shaft. Means is provided, and urging means for constantly urging the rotation shaft so as to return the accelerator pedal to the initial position is provided on the other end side of the rotation shaft.

As a result, it is possible to give the accelerator pedal an appropriate weight by the resistance applying means, and to give the accelerator pedal a natural operation feeling. Further, when the operation amount of the accelerator pedal decreases, the accelerator pedal can be returned toward the initial position by the biasing means.

[0033]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

Here, FIG. 1 shows a first embodiment according to the present invention. In the embodiments, the same components as those of the conventional technique are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 31 denotes a rotating mechanism of the accelerator operation amount detecting device according to the present embodiment. The rotating mechanism 31 has a casing 32 in which a shaft insertion hole 32A is formed as a bearing portion as in the prior art. And a rotary shaft 37 and a wire drum 3 which will be described later.
8 and the connecting plate 41, the structure is almost the same,
In this embodiment, the rotation shaft 37 is rotatably supported by the shaft insertion hole 32A of the casing 32 and the support cylinder 35 described later.

Here, the shaft insertion hole 32A of the casing 32
Is formed as a stepped hole whose diameter increases stepwise toward one side, and the other end side of the shaft insertion hole 32A communicates with the inside of the support cylinder 35. Further, one end surface of the casing 32 serves as a mounting portion 32B for mounting the rotation angle sensor 27. Further, the shaft insertion hole 3 is provided on one side of the shaft insertion hole 32A.
A recess 32C is formed so as to open in the mounting portion 32B so as to expand the diameter of 2A, and the recess 32C is closed by the rotation angle sensor 27 mounted in the mounting portion 32B.

Reference numeral 33 denotes a bearing which is a ball bearing or the like fitted in the shaft insertion hole 32A of the casing 32. The bearing 33 has its outer peripheral side inserted in the shaft insertion hole 32A, and the bearing is rotated by an annular retainer 34. It is positioned in the insertion hole 32A. In addition, a spring seat 34A to which a corrugated washer 49, which will be described later, is attached is formed on one end surface of the retainer 34 as a shallow annular recess.

Reference numeral 35 denotes a supporting cylinder as a cylindrical supporting portion formed on the other side of the casing 32 so as to project from the shaft insertion hole 32A in the axial direction. ,
For example, a bush 36 formed in a tubular shape from a material having a self-lubricating property is fitted, and the support cylinder 35 rotatably supports a rotary shaft 37 via the bush 36.

Reference numeral 37 denotes a rotating shaft. The rotating shaft 37 has a large-diameter shaft portion 37A on one end side which is rotatably supported in a shaft insertion hole 32A of the casing 32 through a bearing 33. The large-diameter shaft portion 37A is integrally formed in a stepped manner on the other end side of the large-diameter shaft portion 37A, and includes a small-diameter shaft portion 37B rotatably supported in the support cylinder 35 via a bush 36. And threaded portions 37C and 37D are integrally formed on the tip side of the small diameter shaft portion 37B.

The rotary shaft 37 is provided with the screw portion 3 on one end side.
7C projects into the recess 32C of the casing 32, and the threaded portion 37D on the other end side is a free end projecting from the other end side of the support cylinder 35.

Further, the screw portions 37C and 37D are formed so that the cross-sectional shape thereof is non-circular (for example, D-shaped), and the wire drum 38 inserted into the outer peripheral side of the rotating shaft 37.
The mounting plate 38A, the connecting plate 41, the rotating plate 47, etc. are restricted from rotating relative to the rotating shaft 37 in the circumferential direction.

Reference numeral 38 denotes a wire drum as a connecting means, and the wire drum 38 is similar to the prior art, and the mounting plate 3 is used.
8A, the arm portion 38B and the wire guide portion 38C, and the wire attachment portion 39 is connected to the accelerator pedal 1 via the wire 12 (see FIG. 3), but in the present embodiment, the attachment plate 38A is the nut 40. Is fitted and fixed to the screw portion 37D of the rotating shaft 37. Further, the wire drum 38 is integrally provided with an initial position adjusting plate (not shown) similar to that of the prior art.

Reference numeral 41 designates a connecting plate as a displacement transmitting means, and the connecting plate 41 is similar to the prior art, and the rotation angle sensor 2 is provided.
A rotation lever 41A connected to the detection lever 7 is provided. The connecting plate 41 is fitted and fixed to the screw portion 37C of the rotating shaft 37 by the nut 42 together with the rotating plate 47.

Reference numeral 43 denotes a return spring as an urging means,
Similar to the prior art, the return spring 43 is inserted and fitted on the outer peripheral side of the support cylinder 35 via spring holders 44 and 45 described later, and both ends are attached to the casing 32 and the wire drum 38, respectively, and the wire drum 38 is attached. The accelerator pedal 1 is always urged in a direction opposite to the rotation direction.

Reference numerals 44 and 45 denote a pair of spring holders slidably fitted on the outer peripheral side of the support cylinder 35. The spring holders 44 and 45 are formed of, for example, a resin material as a substantially annular body, and the outer peripheral side thereof. The return spring 43 wound around is held in an aligned state.

Reference numeral 46 designates a hiss generator as a resistance applying means disposed in the recess 32C of the casing 32. The hiss generator 46 is made of a metal material such as stainless steel (SUS) as in the prior art. Formed in an annular shape, nut 4
A rotating plate 47 fitted and fixed to the screw portion 37C by 2;
For example, the large diameter shaft portion 3 is formed in an annular shape from a metal material such as cold rolled steel plate (SPCC) and is located on the other side of the rotating plate 47.
A pressing plate 48 that is rotatably inserted into the outer peripheral side of 7A, and a wave washer 49 that is mounted in the spring seat 34A of the retainer 34 and that always biases the pressing plate 48 toward the rotating plate 47.
For example, it is composed of a plurality of friction rollers 50, 50 (only two of which are shown) formed of a resin material such as polytetrafluoroethylene (PTFE) and sandwiched between a pressing plate 48 and a rotating plate 47. .

The hiss generator 46 also includes a waveform washer 4
Each friction roller 5 pressed by the pressing plate 48 by
The sliding contact of 0 with the rotating plate 47 gives frictional resistance to the rotation of the rotating shaft 37. As a result, the hiss generator 46 adds a desired hysteresis between the depression operation of the accelerator pedal 1 and the rotational displacement of the rotary shaft 37, and the operational feeling of the accelerator pedal 1 is mechanically coupled to the throttle valve. To approximate the feeling of
Giving the accelerator pedal 1 a natural feel.

The accelerator operation amount detecting device according to the present embodiment has the above-mentioned structure, and its basic operation is not different from that of the prior art.

However, in this embodiment, the large diameter shaft portion 37A and the small diameter shaft portion 37B of the rotation shaft 37 can be rotated by the shaft insertion hole 32A of the casing 32 and the support cylinder 35 via the bearing 33 and the bush 36. And the screw portion 37 of the rotating shaft 37 that is supported as a free end from the other end of the support cylinder 35.
Since the mounting plate 38A of the wire drum 38 is fitted and fixed to D, the rotating shaft 37 is stably supported by the bearing 33 and the bush 36 in a long range from the large diameter shaft portion 37A to the small diameter shaft portion 38A. At the same time, the rotating shaft 37 can be smoothly rotationally displaced by the wire drum 38 on the other end side according to the operation amount of the accelerator pedal 1.

Therefore, since the rotating shaft 37 can be rotatably supported as a cantilever structure, the casing 32 is supported by the rotating shaft 37.
On the other end side of the vehicle, the turning mechanism 31 can be made compact, and the turning mechanism 31 can be mounted on the engine room side of the vehicle with a high degree of freedom in the mounting position. The layout of the detection device on the vehicle side can be easily designed.

Further, since the rotating shaft 37 is cantilevered with respect to the casing 32, the wire drum 38 can be attached to the screw portion 37D at the other end of the rotating shaft 37, and the hiss generator 46 can be rotated. Since it can be disposed in the recess 32C on one side of the casing 32 covered by the moving angle sensor 27, the bearing 8, the retainer 9, and the wire drum 11 that support the other end of the rotating shaft 10 used in the conventional technique. The cylindrical body 13 for positioning the other parts, the cover 25 of the other side recess 5C, etc. can be omitted, and the shaft insertion hole 5A and the other side recess 5C of the other side arm 5 can be omitted.
It is possible to omit the drilling of holes.

As a result, the number of parts and processing man-hours of the rotating mechanism 31 can be greatly reduced, and the structure thereof can be simplified, so that the workability in manufacturing and assembling the rotating mechanism 31 can be surely improved. .

Next, FIG. 2 shows a second embodiment according to the present invention. In this embodiment, the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. And However, the feature of this embodiment is that the support cylinder 35 in the first embodiment is omitted, and the spring holders 53, 54 described later are brought into direct sliding contact with the outer peripheral side of the small diameter shaft portion 37B of the rotating shaft 37. is there.

Reference numeral 51 denotes a rotating mechanism of the accelerator operation amount detecting device according to this embodiment. The rotating mechanism 51 is similar to the first embodiment, and the shaft inserting hole 52A, the mounting portion 52B and the opening concave portion 52C. Casing 52 with a large diameter shaft portion 37
A, a rotating shaft 37 having a small diameter shaft portion 37B and screw portions 37C and 37D, a wire drum 38 having a mounting plate 38A, an arm portion 38B, a wire guide portion 38C and a wire mounting portion 39, and a rotating lever 41A. The connecting plate 41 is generally configured.

The rotating mechanism 51 includes a bearing 33, a retainer 34 having a spring seat 34A, and a return spring 43.
And a hiss generator 46 having a rotating plate 47, a pressing plate 48, a wave washer 49, and each friction roller 50.

However, in this embodiment, the support cylinder 35 in the first embodiment is omitted, and the small-diameter shaft portion 37 of the rotary shaft 37 is omitted.
B projects from the other side of the casing 52, so that only the large-diameter shaft portion 37A of the rotary shaft 37 is supported by the casing 32.
It is rotatably supported via 3.

Reference numerals 53 and 54 denote spring holders. The spring holders 53 and 54 are formed of, for example, a resin material as a substantially annular body, and the return spring 43 wound on the outer peripheral side is similar to the first embodiment. However, in the present embodiment, the spring holders 53 and 54 are slidably inserted into the outer peripheral side of the small diameter shaft portion 37B so that their end surfaces are slidably brought into contact with each other. .

Thus, even in the present embodiment constructed as described above, it is possible to obtain substantially the same operational effects as in the first embodiment, but particularly in this embodiment, the support cylinder of the first embodiment is used. 35 and the bush 36 are omitted, the number of parts of the casing 52 and the number of processing steps can be further reduced.

[0059]

As described above in detail, according to the first aspect of the present invention, one end side of the rotary shaft is rotatably supported by the bearing portion of the casing, and the other end side of the rotary shaft is free. Since the end is projected outward from the other side of the casing and the connecting means with the accelerator pedal is provided on the other end side of the rotating shaft, the rotating shaft is rotatably supported as a cantilever structure with respect to the casing. Therefore, the entire casing can be significantly downsized, the turning mechanism can be made compact, and the layout design when the accelerator operation amount detection device is mounted on the vehicle side can be easily performed. Further, since the rotating shaft has a cantilever structure, it is possible to omit the bearing portion and the like conventionally provided between the other end side of the rotating shaft and the casing.
The number of parts and processing steps for constructing the bearing, etc. on the other end side can be greatly reduced, and the structure of the rotating mechanism can be simplified, ensuring workability during manufacture and assembly of the operation amount detection device. Can be improved.

According to the second aspect of the invention, the rotating shaft is supported between the supporting portion projecting to the other side of the casing and the bearing portion of the casing, and the supporting shaft projects from the other end side of the supporting portion. Since the connecting means is provided at the end of the rotating shaft,
The supporting portion and the bearing portion of the casing can stably support the rotating shaft over a long axial range, and the rotating shaft can be smoothly rotated by the connecting means on the other end side.

According to the third aspect of the present invention,
Since the resistance giving means is provided between the casing and the one end of the rotating shaft and the biasing means is provided on the other end of the rotating shaft, the resistance giving means gives the accelerator pedal a natural operation feeling. Moreover, when the operation amount applied to the accelerator pedal is reduced, the accelerator pedal can be reliably returned toward the initial position by the biasing means.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a rotating mechanism of an accelerator operation amount detecting device according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a turning mechanism of an accelerator operation amount detecting device according to a second embodiment of the present invention.

FIG. 3 is an overall configuration diagram showing a conventional accelerator operation amount detection device together with a controller, a rotary actuator, and an engine.

4 is a vertical cross-sectional view showing a rotating mechanism in FIG.

[Explanation of symbols]

 1 Accelerator Pedal 27 Rotation Angle Sensor (Rotation Detection Means) 31,51 Rotation Mechanism 32,52 Casing 32A, 52A Shaft Insertion Hole (Bearing) 32B, 52B Mounting Part 35 Support Cylinder (Support) 37 Rotation Axis 38 Wire drum (connecting means) 41 Connecting plate (displacement transmitting means) 43 Return spring (biasing means) 46 His generator (resistance applying means)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keiichi Kai 1370 Onna, Atsugi-shi, Kanagawa Inside Unisex Jex Co., Ltd.

Claims (3)

[Claims] 1. An accelerator pedal that is operated to step on and off a vehicle to accelerate and decelerate a vehicle, a rotating mechanism that is rotated in accordance with an operation amount of the accelerator pedal, and a rotational displacement of the rotating mechanism is defined as the accelerator pedal. In the accelerator operation amount detecting device including rotation detecting means for detecting the rotation detecting means, the rotating mechanism has a bearing portion, and one side of the bearing portion serves as a mounting portion for mounting the rotation detecting means. A casing, one end side of which is rotatably supported by a bearing portion of the casing and the other end side of which is a free end and which protrudes outward from the other side of the casing; and the other end side of the rotating shaft. A connecting unit that is connected to the accelerator pedal and that rotates a rotating shaft according to an operation amount of the accelerator pedal; and a connecting unit that is located at one side of the casing and is provided at one end side of the rotating shaft. Is transmitted to the rotation detecting means. Accelerator operation amount detecting device in which consist of a displacement transmission means for. 2. A cylindrical support portion, which projects axially from the bearing portion and rotatably supports the rotating shaft, is integrally formed on the other side of the casing, and the other end side of the rotating shaft is formed. The accelerator operation amount detecting device according to claim 1, wherein the connecting means is provided at an end portion protruding from the supporting portion. 3. A rotating shaft is provided with a resistance applying means which is located at one end side of the rotating shaft and which gives a frictional resistance to the rotation of the rotating shaft, between the casing and the rotating shaft. On the other end side of
The accelerator operation amount detection device according to claim 1 or 2, wherein an urging unit that constantly urges the rotation shaft to return the accelerator pedal to an initial position is provided.