JP2002283872A - Accelerator pedal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accelerator pedal device, capable of highly preventing a feeling of wrongness from being caused in operation on an accelerator and preventing an excessive load from exerting on an accelerator pedal shaft. SOLUTION: The accelerator pedal device has an accelerator pedal arm 1 which is pivotally supported on a housing 4 and oscillated by an accelerator operation, a liner 3 set near the fulcrum of the accelerator pedal arm 1, a hysteresis lever 5 provided with flexibility, engaged in the housing 4 intersecting the accelerator pedal arm 1 as well as provided with a part to be slid 5a sliding on the liner 3, and a spring 9 which is installed between the opposite side of the power point to which the accelerator operation force is applied for the fulcrum of the accelerator pedal arm 1 in the accelerator pedal arm 1 and the opposite side of a part with which the hysteresis lever 5 is engaged for the part to be slid at the hysteresis lever 5, generating the reaction force and hysteresis load by expanding according to the oscillation of the accelerator pedal arm 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an accelerator pedal device.

[0002]

2. Description of the Related Art In US Pat. No. 6,070,490, a pedal reaction force spring for generating a reaction force opposing an accelerator operation force applied to an accelerator pedal and a hysteresis spring for generating a hysteresis load are separate members. Further, an accelerator pedal device has been proposed in which a hysteresis generating member or the like is arranged only on one side of an accelerator pedal arm.

[0003]

The above-mentioned US Pat.
The problems of the accelerator pedal device disclosed in Japanese Patent Publication No. 0 will be described.

The first problem is that if the pedal reaction force spring and the hysteresis spring are separate members, if the operation of the pedal reaction force spring is hindered, only the hysteresis load remains and the accelerator pedal returns. This means that a sense of incongruity may occur.

[0005] A second problem is that the load applied to the accelerator pedal arm shaft may increase due to the arrangement of the hysteresis generating member or the like only on one side of the accelerator pedal arm.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an accelerator pedal device capable of preventing the occurrence of an uncomfortable feeling during accelerator operation at a high level and preventing an excessive load from being applied to an accelerator pedal shaft.

[0007]

According to the present invention, there is provided an accelerator pedal arm which is pivotally supported by a housing and is swung by an accelerator operation. The accelerator pedal arm is provided on the accelerator pedal arm and near a pivot point of the accelerator pedal arm. A hysteresis lever having a liner provided, a flexible, engagement with the housing so as to intersect with the accelerator pedal arm, and a sliding portion sliding on the liner; The other side of the pedal arm opposite to the point of application of the accelerator operating force to the pivot point of the accelerator pedal arm, and the other side of the hysteresis lever with respect to the sliding portion where the hysteresis lever is engaged with the housing. By being interposed between the side and the expansion and contraction according to the swing of the accelerator pedal arm,
An accelerator pedal device, comprising: an elastic member that generates a reaction force opposing an accelerator operation force and a hysteresis load due to sliding of the liner and the slidable portion.

The operation of the accelerator pedal device will be described for a case where the accelerator pedal arm is operated by an accelerator pedal attached to the arm. When the accelerator pedal is depressed by the accelerator operator and the accelerator pedal arm swings in a predetermined direction, the elastic member interposed between the predetermined portion of the accelerator pedal arm and the predetermined portion of the hysteresis lever is compressed or expanded. Therefore, a reaction force opposing the accelerator operation force (so-called pedal reaction force) and a hysteresis load are generated. by this,
The accelerator operator can feel a moderate moderation when accelerating, and when maintaining the accelerator pedal in a fixed position, the accelerator pedal must be operated with a smaller operating force than that required to depress the accelerator pedal. Can be maintained in a fixed position.

Further, according to the accelerator pedal device, since the elastic member is interposed between the accelerator pedal arm and the hysteresis lever arranged so as to intersect each other, the pivotal portion of the accelerator pedal arm becomes excessively large. Application of a heavy load is prevented.

In addition, according to this accelerator pedal device, the elastic member that generates a reaction force (pedal reaction force) opposing the accelerator operation force and the elastic member that generates the hysteresis load are the same member. Even if the operation of the elastic member is hindered, both the pedal reaction force and the hysteresis load acting in opposite directions are eliminated or reduced, so that a great sense of discomfort may occur when the accelerator pedal returns. It is prevented as much as possible.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described.

In a preferred embodiment of the present invention,
The liner and the slidable portion are formed in an arc shape, and the arc of the slidable portion is formed larger than the arc of the liner on a sliding surface between the liner and the slidable portion. According to this embodiment, even when the hysteresis lever is greatly deformed by the elastic means, the phenomenon that the hysteresis lever is wound around the accelerator pedal arm or the accelerator pedal arm shaft or is sandwiched between them is prevented. As a result, a hysteresis load is generated stably. In addition, according to this embodiment, the position where the sliding portion of the hysteresis lever slides on the liner is stabilized. This further contributes to stabilization of the hysteresis load.

[0013] In a preferred embodiment of the present invention, the housing has an opening hole (having an opening having a normal in the front and back direction in FIG. 1) into which a portion near the pivot point of the accelerator pedal arm is inserted. And a window (having a normal in the front and back direction in FIG. 1) that is opened on a plane basically orthogonal to the hole and communicates with the open hole and into which the elastic means is inserted. According to this embodiment, the housing (pedal housing) can be integrally molded (excellent in productivity), and the elastic member can be inserted into the housing (pedal housing) during the assembly process (assembly). Also excellent in nature). Further, according to this embodiment, it is possible to preferably prevent foreign matter from entering the housing. The window can be closed by assembling the accelerator pedal sensor housing.

In a preferred embodiment of the present invention,
The accelerator pedal arm and the hysteresis lever are not offset and are basically arranged on the same line. This prevents stress such as prying from being applied to the pivot portion of the accelerator pedal arm or the accelerator pedal arm shaft.

In a preferred embodiment of the present invention,
The hysteresis lever is formed at low cost by using a press material such as steel. On the other hand, preferably, the liner is formed using a resin. According to such an embodiment, the sliding portion is made of a metal material and the slidable portion is made of a resin, which is advantageous in terms of the durability of the device. Particularly preferably, the entire accelerator pedal arm is made of resin. In this case, a portion on the accelerator pedal arm that can slide with the hysteresis lever serves as a liner.

In a preferred embodiment of the present invention,
An accelerator pedal arm is pivotally supported on the housing via an accelerator pedal shaft. Preferably, the accelerator pedal arm and the accelerator pedal shaft are configured to rotate integrally by spline fitting with each other. According to this embodiment, the accelerator pedal shaft can be manufactured by press molding, or can be manufactured using inexpensive materials such as resin and metal.

According to the accelerator pedal device of the present invention, it is possible to tune only the hysteresis of the pedal depression force characteristic by changing the fulcrum of the hysteresis lever.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the preferred embodiments of the present invention described above, an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram of an accelerator pedal device according to one embodiment of the present invention. Referring to FIG. 1, an accelerator pedal arm shaft 2 is rotatably supported on a housing 4. Accelerator pedal arm shaft 2
A pivot portion (boss portion) of the accelerator pedal arm 1 is spline-fitted to an outer peripheral portion of the accelerator pedal arm 1. As a result, the accelerator pedal arm 1 is pivotally supported with respect to the housing,
It is rocked by the accelerator operation. An accelerator pedal 1a is formed at one end of the accelerator pedal arm shaft 2. A liner 3 is provided (formed) on the accelerator pedal arm 1 and near a pivot point of the accelerator pedal arm 1 (near the accelerator pedal arm shaft 2). The accelerator pedal arm 1 has an arm portion 1c extending above the pivot point. A hole 1b is formed at the center in the width direction of the arm 1c.

The housing 4 is inserted through the hole 1b of the accelerator pedal arm 1 and
And a hysteresis lever 5 arranged to intersect at one end thereof. The hysteresis lever 5 has flexibility, and includes a sliding portion 5 a that slides on the liner 3.

The hysteresis lever 5 is connected to the housing 4 with respect to the sliding portion 5a of the accelerator pedal arm 1 on the opposite side of the point of application of the accelerator operating force to the pivot point of the accelerator pedal arm 1.
A spring 8 is interposed between the portion and the opposite side of the portion to be engaged. The spring 8 expands and contracts in response to the swing of the accelerator pedal arm 1, thereby generating a reaction force opposing the accelerator operation force and a hysteresis load due to sliding between the liner 3 and the sliding portion 5a. Further, the liner 3 and the sliding portion 5a are formed in an arc shape, and the arc of the sliding portion 5a is formed larger than the arc of the liner 3 on the sliding surface between the liner 3 and the sliding portion 5a. .

The housing 4 has an opening 4a into which a portion near the pivot point of the accelerator pedal arm 1 is inserted, and an opening 4A which is open on a plane basically perpendicular to the opening 4a.
Window 4b formed to communicate with
And

Next, the kick down generating mechanism 9 shown in FIG. 1 will be described. FIG. 2 is an enlarged view of the kick-down load generating mechanism 9 of the accelerator pedal device shown in FIG.

Referring to FIGS. 1 and 2, when the accelerator pedal arm 1 is swung by a predetermined angle, the kick-down load generating mechanism 9 includes a plunger 10 which is biased in contact with the accelerator pedal arm 1. A leaf spring 11 locked by the housing 4 and through which the plunger 10 is inserted; a kick-down load spring 12 interposed between the plunger 10 and the leaf spring 11; It is configured to include a roller 14 sandwiched between the first and second parts. The kick-down load mechanism 9 can give a predetermined sense of moderation to the accelerator operator when a kick-down load is applied to the accelerator pedal shaft.

Next, the operation of the accelerator pedal device described above will be described. FIG. 3 is an operation diagram of the accelerator pedal device shown in FIG.

Referring to FIG. 1 and FIG. 3, when the accelerator pedal 1a is depressed by the accelerator operator and the accelerator pedal arm 1 swings in a predetermined direction, the spring 8 is compressed so that the pedal reaction force and the hysteresis are reduced. Load occurs. This allows the accelerator operator to
You can feel a moderate moderation and accelerator pedal 1
When a is maintained at a fixed position, the accelerator pedal can be maintained at a fixed position with an operation force smaller than the operation force required for depressing the accelerator pedal 1a.

Further, according to the accelerator pedal device, the hysteresis lever 5 is connected to the accelerator pedal arm 1.
Is inserted through a hole 1b provided at the center in the width direction of the accelerator pedal arm 1 and is arranged so as to cross each other.
The housing 4 is located at the center in the width direction of the housing 4.
The accelerator pedal arm shaft 2 pivotally supported by
The load is evenly supported at both ends, so that an excessive load is prevented from being applied to the accelerator pedal arm shaft 2.

In addition, according to the accelerator pedal device, since the elastic member 8 that generates the pedal reaction force and the elastic member that generates the hysteresis load are the same member (spring 8), the operation of the spring 8 is assumed. Even when trouble occurs, since both the pedal reaction force and the hysteresis load acting in opposite directions are eliminated or reduced, it is possible that a great feeling of discomfort occurs when the accelerator pedal 1a returns. Is prevented.

[0029]

According to the present invention, there is provided an accelerator pedal device capable of preventing the occurrence of discomfort during the operation of the accelerator to a high degree and preventing an excessive load from being applied to the accelerator pedal shaft.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an accelerator pedal device according to one embodiment of the present invention.

FIG. 2 is an enlarged view of a kick-down load generating mechanism of the accelerator pedal device shown in FIG.

FIG. 3 is an operation diagram of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Accelerator pedal arm 1a Accelerator pedal 1b Hole 1c Arm part 2 Accelerator pedal arm shaft 3 Liner 4 Housing 4a Opening hole 4b Window 5 Hysteresis lever 5a Sliding part 6 Spring seat 7 Spring seat 8 Spring (elastic means) 9 Kickdown load Generating mechanism 10 Plunger 11 Leaf spring 12 Spring for kickdown load 14 Roller

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masahiro Kimura 2-1-1 Asahi-cho, Kariya-shi, Aichi Prefecture Inside Aisin Seiki Co., Ltd. No.2 Ohashi Iron Works Co., Ltd. F term (reference) 3D037 EA03 EB02 EB05 EB16 3G065 CA21 CA22 GA46 JA04 JA11 JA13

Claims (4)

[Claims] An accelerator pedal arm pivotally supported by a housing and swinging by an accelerator operation; a liner provided on the accelerator pedal arm and near a pivot point of the accelerator pedal arm; A hysteresis lever which is engaged with the housing so as to intersect with the accelerator pedal arm and has a slidable portion which slides on the liner; and The hysteresis lever is interposed between the opposite side of the point of application of the accelerator operating force to the pivot point and the opposite side of the hysteresis lever with respect to the slidable portion with respect to the sliding portion. By expanding and contracting in response to the swing of the accelerator pedal arm, a reaction force opposing an accelerator operation force and the line An accelerator pedal apparatus characterized by having an elastic member for generating a hysteresis load due to sliding of the the sliding portion between. 2. The liner and the slidable portion are formed in an arc shape, and the arc of the slidable portion is greater than the arc of the liner on a sliding surface between the liner and the slidable portion. 2. The accelerator pedal device according to claim 1, wherein the accelerator pedal device is formed large. 3. The housing, wherein the housing is formed with an open hole into which a portion near the pivot point of the accelerator pedal arm is inserted, and is opened at a plane basically orthogonal to the open hole and communicates with the open hole. The accelerator pedal device according to claim 1, further comprising a window into which the elastic means is inserted. 4. The accelerator according to claim 1, wherein said hysteresis lever is inserted into a hole provided at a central portion in a width direction of said accelerator pedal arm, and is arranged so as to intersect said accelerator pedal arm. Pedal device.