JP2007190939A - Accelerator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent foreign matter from being caught between a stopper of an accelerating rotor and an abutting member of a supporting member, in an accelerator device provided with no cover in a movable part such as the accelerating rotor. <P>SOLUTION: The stopper 34 of the accelerating rotor is formed into a projecting shape on an upper side of a floor surface so that the foreign matter may not be stayed, even if the foreign matter rides on the stopper 34. As a result, an increase of engine speed against an intention of a driver due to catching of the foreign matter between the stopper 34 of the accelerating rotor and the abutting member 65 of the supporting member can be prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an accelerator device, and more particularly to a stopper structure for abutting an accelerator rotor, which is rotated by an accelerator pedal operation by a driver, on a support member attached to a vehicle body.

Conventionally, the accelerator device is mechanically connected to the throttle device by a wire or the like, and the throttle opening is controlled by pulling the wire by depressing an accelerator pedal attached to the pedal arm. On the other hand, as disclosed in Patent Document 1 and Patent Document 2, the throttle opening is electrically controlled based on a detection signal of an accelerator opening sensor that detects an accelerator pedal depression amount, that is, an accelerator opening. Accelerator devices are known. Any accelerator device is required to be lightweight and easy to manufacture.
Japanese Patent Laid-Open No. 10-287147 JP 2001-180326 A

  However, the accelerator devices disclosed in Patent Documents 1 and 2 are usually assembled to the vehicle body in a state where a movable part such as an accelerator rotor is covered with a cover. However, there is an accelerator device that does not include a cover that covers the movable part for the purpose of reducing the weight of the device and facilitating manufacture. When there is no cover that covers the movable part of such an accelerator pedal device, for example, by removing the floor mat of the driver's seat, there is a possibility that foreign matter such as dust and pebbles accumulated on the floor mat will be scattered on the movable part. is there.

  If the scattered foreign matter falls on the stopper for bringing the accelerator rotor into contact with the support member, it stays on the accelerator rotor stopper when the driver performs an operation to lightly depress the accelerator and return it immediately. There is a possibility that foreign matter may be caught between the stopper and the contact member of the support member.

  If foreign matter is caught between the stopper of the accelerator rotor and the contact member of the support member in this way, the rotational speed increases from the normal engine idle speed even though the driver is not operating the accelerator. The driver feels uncomfortable.

  Accordingly, an object of the present invention is to prevent foreign matter from being caught between the stopper of the accelerator rotor and the contact member of the support member when the accelerator is stepped on even if foreign matter is scattered on the movable part such as the accelerator rotor. It is an object of the present invention to provide an accelerator device that can perform the above-described operation.

  In the invention according to claim 1 of the present invention, an accelerator pedal, a pedal arm having an accelerator pedal attached to one end portion thereof, a support member for attachment to a vehicle body, a support member rotatably supported by the pedal, An accelerator rotor attached to the other tip of the arm, an urging means for urging the accelerator rotor in a direction opposite to the depression direction of the accelerator pedal, and a direction in which the accelerator rotor is urged by the urging means with respect to the support member And a stopper for restricting the rotation of the accelerator rotor, and the stopper of the accelerator rotor is formed such that the shape of the upper portion of the stopper with respect to the floor surface is such that no foreign matter remains.

  As a result, even if foreign matter such as dust and pebbles accumulated on the floor is scattered and falls on the stopper for bringing the accelerator rotor into contact with the support member, the foreign matter does not easily stay on the stopper. For this reason, even if the foreign matter is scattered on the movable part such as the accelerator rotor, the foreign matter is prevented from staying on the stopper, so that it is prevented from being caught between the stopper and the contact member of the support member. it can.

  In the invention according to claim 2, the stopper of the accelerator rotor is formed so that the shape of the stopper upper portion with respect to the floor surface is convex upward. As a result, when foreign matter such as dust and pebbles accumulated on the floor scatters and falls onto the accelerator rotor stopper, the accelerator rotor stopper shape is convex upward with respect to the floor surface. Falls on the floor without staying on the stopper. As a result, foreign matters such as dust and pebbles remain on the stopper, so that the foreign matter can be prevented from being caught between the stopper of the accelerator rotor and the contact member of the support member in accordance with the accelerator operation.

  In the invention according to claim 3, the stopper of the accelerator rotor has a hemispherical shape with the upper portion of the stopper with respect to the floor surface being upward. Even in this case, even if foreign matter such as dust or pebbles collected on the driver's floor in the passenger compartment falls on the accelerator rotor stopper, the foreign matter does not stay on the stopper and falls on the floor. . As a result, foreign matters such as dust and pebbles remain on the stopper, so that the foreign matter can be prevented from being caught between the stopper of the accelerator rotor and the contact member of the support member in accordance with the accelerator operation.

  In the invention which concerns on Claim 4, the stopper of an accelerator rotor is made into the shape which covers the contact position of the said stopper in the supporting member for attaching to a vehicle body. Thus, the accelerator rotor stopper shape is supported even when foreign objects such as dust and pebbles are scattered by making the stopper of the accelerator rotor cover the stopper contact position on the support member for mounting on the vehicle body. Since the shape of the member covers the contact position of the stopper, foreign matter can be prevented from being caught between the accelerator rotor, the stopper, and the contact member of the support member by an accelerator operation or the like.

  Hereinafter, a plurality of embodiments showing embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
The accelerator apparatus according to the first embodiment of the present invention is shown in FIG. The accelerator device 10 is not connected to the throttle device by a wire or the like. Based on the accelerator opening detected by the accelerator opening sensor 40, an engine control device (not shown) (hereinafter referred to as “ECU”) controls the throttle opening.

  The accelerator device 10 is attached to the vehicle body by fixing the support member 20 with bolts or the like. An accelerator pedal 11 for operating the accelerator device 10 by the driver is attached to one end portion of the pedal arm 12. The other tip of the pedal arm 12 on the side opposite to the accelerator pedal is attached to the accelerator rotor 30. When the driver operates the accelerator pedal 11, the accelerator rotor 30 rotates. As shown in FIG. 4, the other tip end portion of the pedal arm 12 is bent twice at a substantially right angle in the opposite direction. Further, the pedal arm 12 is bent so as to intersect with a virtual straight line 100 connecting the distal end portion 12a and the bent portion 12b of the pedal arm attached to the accelerator rotor 30. As shown in FIG. 3, the support shaft 25 passes through the bearing plates 21 and 22 of the support member 20 so as not to rotate, and is fixed by bolts 26. The lever rotor 27 is formed of resin, and the disc portion 61 of the lever 60 is insert-molded into the lever rotor 27 as shown in FIG. One end of the spring 64 as the urging means is locked to the arm 63 of the lever 60. The other end of the spring 64 is locked to a locking portion 23 formed on the support member 20. The spring 64 biases the lever 60 in the direction of arrow B in FIG. In a state where the accelerator pedal 11 is not depressed, the stopper 34 formed on the accelerator rotor is in contact with and locked with a locking member 65 attached to the support member 20. When the driver depresses the accelerator pedal 11 against the urging force of the spring 64, the lever rotor 27 and the lever 60 together with the accelerator rotor 30 rotate in the direction of arrow A in FIG. A claw 62 is formed on the disc portion 61 of the lever 60, and when the claw 62 rotates to a position indicated by a two-dot chain line 62 a, the claw 62 is locked to a locking portion formed on the support member 20.

  As shown in FIG. 3, the lever rotor 27 and the accelerator rotor 30 are provided with teeth 27a and 30a on opposite sides, respectively. The helical teeth 27a and the helical teeth 30a are meshed so that the lever rotor 27 and the accelerator rotor 30 receive a force in a direction away from each other by the biasing force of the spring 64. Also, when the accelerator pedal 11 is depressed against the urging force of the spring 64, the lever rotor 27 and the accelerator rotor 30 receive a force in a direction away from each other due to the engagement between the helical teeth 27a and the helical teeth 30a. A washer plate 28 is sandwiched between the lever rotor 27 and the bearing plate 21. The washer plate 28 reduces sliding wear between the lever rotor 27 and the bearing plate 21.

  The accelerator rotor 30 is integrally formed of resin and is rotatably supported on the support shaft 25. As shown in FIG. 1, the accelerator rotor 30 has a press-fit portion 31 as a first attachment portion and a fitting 32 as a second attachment portion on the outer periphery, which form an angle of approximately 90 °. The press-fit portion 31 and the fitting 32 are formed away from each other in the rotational direction of the accelerator rotor 30.

  As shown in FIGS. 2, 3, and 5, the accelerator opening sensor 40 is attached to the bearing plate 22 on the side opposite to the accelerator rotor 30. As shown in FIG. 3, the accelerator opening sensor 40 includes a sensor rotor 44, a contact portion 47 attached to the sensor rotor 44, and a substrate 48 coated with a resistor. The substrate 48 is fixed to the center rotor 44 side of the bearing plate 22. A constant voltage of 5 V is applied to the resistor applied to the substrate 48, and the output voltage value varies when the sliding position between the resistor and the contact portion 47 changes according to the accelerator operation amount. An ECU (not shown) inputs this output voltage value from the accelerator opening sensor 40 and detects the accelerator opening.

  The plurality of terminals 42 are embedded in a connector portion 41 a formed on a resin cover 41. The sensor rotor 44 is made of resin and is rotatably supported on the support shaft 25. The leaf spring 50 urges the sensor rotor 44 in the direction of the support shaft 25 toward the accelerator rotor 30 side. Since the taper surface 45 formed on the sensor rotor 44 is pressed against the taper surface 25a formed on the support shaft 25 by the urging force of the leaf spring 50, both tapered surfaces slide. A protrusion 46 is formed at a position eccentric to the support shaft 25 of the sensor rotor 44, and the protrusion 46 is fitted in a recess 33 formed in the accelerator rotor 30. The leaf spring 51 is inserted into the recess 33, and the portion that holds the protrusion 46 is bent in a U-shaped cross section. Since the leaf spring 51 holds the protrusion 46 by the biasing force in the direction facing the rotation direction, the accelerator rotor 30 is prohibited from shifting in the rotation direction with respect to the center rotor 44. A space is formed in the direction of the support shaft 25 between the protrusion 46 and the leaf spring 51, and the opening on the protrusion 46 side of the leaf spring 51 extends in the radial direction of the accelerator rotor 30. Accordingly, the accelerator rotor can be displaced with respect to the sensor rotor 44 while sliding with the leaf spring 51 in the direction of the support shaft 25 and in the radial direction of the accelerator rotor 30.

  Next, the operation of the accelerator device 10 will be described. In FIGS. 2 and 3, when the driver adjusts the amount of depression of the accelerator pedal 11, the accelerator rotor 30 rotates together with the accelerator arm 12 about the support shaft 25 as a rotation axis. Since the helical teeth of the accelerator rotor 30 and the lever rotor 27 are engaged with each other, the rotation of the accelerator rotor 30 by the operation of the accelerator pedal 11 is transmitted to the lever rotor 27, and the urging force of the spring 64 is transmitted from the lever rotor 27 to the accelerator. It is transmitted to the pedal 11.

  As described above, the helical teeth of the lever rotor 27 and the accelerator rotor 30 mesh with each other and receive a force in a direction away from each other. When the accelerator pedal 11 is stepped on, the urging force of the spring 64 and the sliding resistance between the bearing plates 21 and 22 when both rotors rotate act on the accelerator pedal 11 in the opposite direction to the accelerator return direction. This is greater than the force acting in the accelerator return direction when the pedal 11 is returned. Since hysteresis occurs in the characteristics of when the accelerator pedal 11 is depressed and the force applied in the return direction of the accelerator pedal 11, it is easy to hold the accelerator pedal 11 at a fixed position.

  Since the protrusion 46 of the center rotor 44 is fitted in the recess 33 of the accelerator rotor 30, the sensor rotor 44 rotates together with the accelerator rotor 30. When the rotation angle of the sensor rotor 44 changes, the position of the contact portion 47 that contacts the resistor applied to the substrate 48 is displaced, and the output voltage value increases or decreases. By detecting this voltage value, the accelerator opening can be detected.

  Next, the characteristic part of this embodiment is demonstrated. In this embodiment, as shown in FIG. 1, movable parts, such as an accelerator rotor, are not covered with the cover. For this reason, when removing the floor mat, there is a possibility that foreign matters such as dust and pebbles accumulated on the floor may be scattered on the movable part. When the scattered foreign matter falls on the stopper 34 for bringing the accelerator rotor into contact with the support member, if the driver performs an operation to lightly depress the accelerator and immediately return it, the accelerator rotor stopper 34 There is a possibility that the foreign matter that has remained on the surface is caught between the stopper 34 and the contact member 65 of the support member.

  Thus, if a foreign object is caught between the accelerator rotor stopper 34 and the support member abutment member 65, the rotational speed increases from the normal engine idle speed even though the driver does not perform the accelerator operation. The driver feels uncomfortable.

Therefore, in the present embodiment, the accelerator rotor stopper 34 shown in FIG. 1 has the shape shown in FIG. 6 is a view as seen from the direction of arrow II shown in FIG.
In FIG. 6, the shape of the accelerator rotor is formed so as to protrude upward with respect to the floor surface. As a result, foreign matter such as pebbles on the floor of the passenger seat of the passenger compartment is scattered by the accelerator or brake operation, and even if the foreign matter falls on the stopper 34 of the accelerator rotor, the foreign matter does not stay there. It will fall on the floor of the driver's seat. For this reason, even if the foreign matter is scattered on the movable part such as the accelerator rotor, the foreign matter is prevented from staying on the stopper, so that it is prevented from being caught between the stopper and the contact member of the support member. it can.

[Second Embodiment]
As a second embodiment, the accelerator rotor stopper 34 shown in FIG. 1 has the shape shown in FIG. FIG. 7A is a view as seen from the direction of the arrow II shown in FIG. In FIG. 7A, the shape of the accelerator rotor stopper 34 is formed to be hemispherical upward with respect to the floor surface. Even in such a shape, even if foreign matter such as pebbles on the floor of the passenger compartment of the passenger compartment scatters and falls on the accelerator rotor stopper 34, the floor of the passenger compartment seat does not stay there. Fall on top.

[Third Embodiment]
As a third embodiment, the accelerator rotor stopper 34 shown in FIG. 1 has the shape shown in FIGS. As shown in FIGS. 2 and 3, when the accelerator opening sensor 40 is arranged on the right side when viewed from the direction of arrow II shown in FIG. 1, if foreign matter slides down to the right from the stopper of the accelerator rotor. There is a possibility that foreign matter may be caught between the accelerator rotor stopper 34 and the bearing plate 22 to which the accelerator opening sensor 40 is attached. For this reason, when the accelerator opening sensor 40 is arrange | positioned on the right side as mentioned above, it is good to select a shape like FIG.7 (b). On the other hand, when the accelerator opening sensor 40 is arranged on the left side, it is preferable to select a shape as shown in FIG.

[Fourth Embodiment]
As a fourth embodiment, the accelerator rotor stopper 34 shown in FIG. 1 has the shape shown in FIG. When the shape of the accelerator rotor stopper is as shown in FIG. 8, since the accelerator rotor stopper 34 covers the contact member 65 with the support member, when the accelerator is opened from the fully closed state in accordance with the accelerator operation, Foreign matter can be prevented from being caught between the stopper 34 of the accelerator rotor and the contact member 65 of the support member.

  In this embodiment, the shape of the accelerator rotor stopper 34 is deformed to prevent foreign matter from being caught between the contact portion 65 of the accelerator rotor stopper 34 and the support member. The shape of 65 may be deformed to cover the contact member 65 with the support member.

  In the present embodiment, the accelerator rotor is made of resin, but a metal material other than resin may be used. Further, the accelerator device includes an accelerator opening sensor 40, and the throttle opening is controlled by a detection signal of the accelerator opening sensor 40 without connecting the accelerator device and the throttle device with a wire. On the other hand, the accelerator device may not include an accelerator opening sensor, and the throttle opening may be controlled by connecting the accelerator device and the throttle device with a wire.

It is the II sectional view taken on the line of FIG. 3 which shows the accelerator apparatus in embodiment of this invention. It is a top view which shows the accelerator apparatus in embodiment of this invention. It is sectional drawing containing the support shaft which shows the accelerator apparatus in embodiment of this invention. It is a V direction arrow directional view of FIG. FIG. 3 is a view in the direction of the arrow VI in FIG. 2. It is an arrow line view which shows the accelerator rotor shape of the II direction of FIG. 1 in 1st Embodiment. It is an arrow line view which shows the accelerator rotor shape of the II direction of FIG. 1 in 2nd, 3rd embodiment. (A) spherical shape, (b) left-tilting shape, (c) right-tilting shape It is the II sectional view taken on the line of FIG. 3 which shows the accelerator apparatus in 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Accelerator apparatus 11 Accelerator pedal 12 Pedal arm 20 Support member 30 Accelerator 34 Accelerator rotor stopper 40 Accelerator opening sensor 44 Sensor rotor 64 Spring 65 Contact member

Claims (4)

An accelerator pedal,
A pedal arm having the accelerator pedal attached to one end;
A support member for mounting on the vehicle body;
An accelerator rotor that is rotatably supported by the support member and is attached to the other tip of the pedal arm;
Urging means for urging the accelerator rotor in a direction opposite to the depression direction of the accelerator pedal;
A stopper for restricting the rotation of the accelerator rotor in a direction in which the accelerator rotor is biased by the biasing means with respect to the support member;
The accelerator of the accelerator rotor is characterized in that the shape of the upper portion of the stopper with respect to the floor surface is a shape in which foreign matter does not stay. The accelerator apparatus according to claim 1, wherein the stopper of the accelerator rotor has a shape in which a shape of an upper portion of the stopper with respect to the floor surface is convex upward. The accelerator apparatus according to claim 1, wherein the stopper of the accelerator rotor has a hemispherical shape in an upper portion of the stopper with respect to the floor surface. The accelerator device according to claim 1, wherein the stopper of the accelerator rotor has a shape that covers a contact position of the stopper in the support member to be attached to a vehicle body.

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