CN203318169U

CN203318169U - Electronic accelerator pedal

Info

Publication number: CN203318169U
Application number: CN2013203221647U
Authority: CN
Inventors: 王慕昊
Original assignee: SHANGHAI KAIZHONG POLYURETHANE CO Ltd
Current assignee: Shanghai Carthane Co ltd
Priority date: 2013-06-05
Filing date: 2013-06-05
Publication date: 2013-12-04
Anticipated expiration: 2023-06-05

Abstract

The utility model discloses an electronic accelerator pedal. A force hysteresis generating mechanism is arranged at the tail end of a pedal arm and comprises a base, a pushing rod, a friction element, a spring positioning block and a spring group, wherein the friction element is arrange at the tail end of the base, the spring positioning block is suspended above the base, the upper end face of the spring positioning block is provided with a spring positioning part, and the spring positioning part is located between the spring positioning part of the spring positioning block and a second spring positioning part on a casing. One end of the spring positioning block is a wedge-shaped oblique plane, one end of the pushing rod is a cambered surface, the wedge-shaped oblique plane of the spring positioning block is in contact with the cambered surface of the pushing rod, and the other end of the pushing rod is connected with the friction element. The electronic accelerator pedal can achieve a good force hysteresis function and has good cost effectiveness.

Description

Efp

Technical field

The utility model relates to a kind of novel efp.

Background technology

In traditional engine design, the position of throttle gate is mainly controlled by a mechanical linkage (Bao pause drag-line).People's pin is trampled mechanical Das Gaspedal and is directly controlled throttle gate valve plate aperture by drag-line, therefore can't accurately control suction quantity, can't realize mating the air/fuel ratio of real-time vehicle condition, affect the combustion efficiency of driving engine, and then reduce the emission level of fuel economy and vehicle.Theory based on drive-by-wire (drive-by-wire), traditional mechanical type Das Gaspedal is progressively replaced by efp.Efp changes into electric output by the position of pedal by position transduser, and sends electric signal to throttle controller.Efp is applicable to engine electric-controlled system more, and the position signal of Das Gaspedal is an important input parameter of engine electronic control system.

Traditional stay-supported Das Gaspedal; produce friction force between its bracing wire and its protecting sleeve; this friction force can effectively prevent the shake of pedal arm; and provide the comfortable sensation of trampling for the driver; therefore novel efp should design corresponding mechanism and produce this friction force; reach anti-shake effect, and make the driver that comfortable driving sensation be arranged.U.S. Pat 0169093 such as people such as Peniston has been announced a pedal, and this pedal adopts and a kind ofly can produce the side friction mechanism that the power residual effect is answered.

From product in the market, some does not have the stagnant mechanism of power; Although there are some that the stagnant mechanism of so-called power is arranged, the power residual effect fruit produced is very limited, also has some mechanism's complexity, and assembly difficulty is large, and cost is high.

The utility model content

Above-mentioned deficiency for prior art, according to embodiment of the present utility model, be desirable to provide a kind of have good power residual effect fruit and good cost-benefit efp simultaneously, the anglec of rotation of pedal arm can be converted into to electric output, can simulate again the use sensation of traditional acceleration pedal.

According to embodiment, the efp that the utility model provides, comprise housing, pedal arm, case lid and sensor assembly, described pedal arm is arranged between housing and case lid, innovative point is: also comprise the power bradytoia life structure of the tail end that is arranged on pedal arm, this power bradytoia life structure comprises pedestal, spring locating piece, spring assembly, push rod and friction element; Pedestal is positioned at the tail end of pedal arm;

One end of push rod is cylindric draw-in groove, and an other end is cambered surface; Push rod and friction element are placed in the end support groove of pedestal, and the cambered surface end of push rod is inside;

The rotating shaft of friction element is installed in the cylindric draw-in groove of push rod, and the cylindric draw-in groove opening size of push rod is less than the diameter of friction element rotating shaft;

The upper end of pedestal arranges the spring locating piece, and spring assembly is positioned between spring locating piece and housing; The outside cambered surface of friction element contacts with the cambered surface inwall of housing;

The rotating shaft of pedal arm and the rotating shaft of sensor assembly connect, and make rotating shaft and the pedal arm synchronous rotary of sensor assembly.

According to an embodiment, in the above-mentioned efp of the utility model, the lower end of spring locating piece is unsettled; Spring locating piece one side is vertical plane, and an other side is wedge shape inclined-plane wide at the top and narrow at the bottom, and this wedge shape inclined-plane contacts with the cambered surface of push rod.

According to an embodiment, in the above-mentioned efp of the utility model, the arm pivoted side of pedal has cross slot, the rotating shaft sponson of sensor assembly has cross post bolt, and pedal arm rotating shaft and sensor assembly rotating shaft are plugged in cross slot and are linked together by cross post bolt.

With respect to prior art, power bradytoia life structure of the present utility model is by changing into the radially thrust pressure to push rod by spring to the pressure of spring locating piece, pressure changes along with the position difference of pedal arm, friction element is arranged on push rod, wall friction in friction element outer face and housing cambered surface, and then produce variable friction force; The scale of friction force can be regulated by the angle that changes supported by springs wedge shape inclined-plane.Under the effect of spring, the spring locating piece is radially released push rod along rotating shaft together with friction element, is following the motion of pedal arm, between friction element and housing rear arc inwall, produces force of sliding friction, produces power residual effect fruit.Pedal arm is positioned at diverse location, the pressure difference that spring produces, and the suffered outward thrust of push rod is also different, and friction element is connected with push rod by columnar shaft, and can rotate by this axle, for the housing cambered surface, the position adaptation function is arranged.Therefore this power bradytoia becomes mechanism to have adaptation function and power is stagnant changes with the pedal arm position is different.

With respect to prior art, the pedal arm of the utility model efp can rotate in certain angular range, and its maximum anglec of rotation is regulated in the position of the confined planes of idle position confined planes or mechanical stop side by changing pedal arm.Efp of the present utility model changes into electric signal by the diverse location of pedal arm and exports vehicle control system to, reaction driver's driving intention, and possess anti-shake characteristic and driver comfort simultaneously.Efp of the present utility model not only realizes the pedal arm position is converted into the function of electric output, and more, owing to having adopted novel power bradytoia life structure, this mechanism simple is effective, can produce good power residual effect fruit, can effectively reduce cost again.

The accompanying drawing explanation

Fig. 1 is efp one example structure figure of the present utility model.

Fig. 2 is the cutaway view of efp shown in Fig. 1.

Fig. 3 is the structural representation of power bradytoia life structure in efp shown in Fig. 1.

Fig. 4 is the cross slot figure of pedal arm axle one side in efp shown in Fig. 1.

Fig. 5 is the structural representation of the cross post bolt of sensor assembly shaft.

Wherein: 1 is housing; 11 is axle; 12 is cambered surface; 13 is the second spring locating surface; 14 is the 4th confined planes; 15 is the second confined planes;

2 is pedal arm; 21 is rotating shaft; 22 is cross slot; 23 is the 3rd confined planes; 24 is the first confined planes; 25 is pedestal; 26 is support slot;

3 is case lid;

4 is sensor assembly; 41 is cross post bolt;

5 is the spring locating piece; 51 is the wedge shape inclined-plane; 52 is vertical plane

6 is spring assembly;

7 is push rod; 71 is cylindric draw-in groove; 72 is cambered surface

8 is friction element; 81 is rotating shaft; 82 is cambered surface.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, further set forth the utility model.These embodiment are interpreted as only being not used in for the utility model is described restriction protection domain of the present utility model.After the content of having read the utility model record, those skilled in the art can make various changes or modifications the utility model, and these equivalences change and modification falls into the utility model claim limited range equally.

Shown in Fig. 1,2, the efp that the utility model preferred embodiment provides comprises housing 1, pedal arm 2, case lid 3, sensor assembly 4, spring locating piece 5, spring assembly 6, push rod 7, friction element 8, wherein: described housing 1 is the cavity of an opening, it is a cambered surface 12 concentric with axle 11 that there are axle 11, rear end in middle part.One side of the axle of pedal arm 2 21 is arranged on the axle 11 of housing 1, then case lid 3 is arranged on housing 1.The rotating shaft 21 of pedal arm 2 has cross slot 22 in the case lid side, the rotating shaft of sensor assembly 4 has cross post bolt 41, sensor assembly 4 is connected with the cross slot 22 of pedal arm 2 by cross post bolt 41, realize the rotating shaft synchronous rotary that rotarily drives sensor assembly 4 of pedal arm 2, the position of pedal arm 2 is converted into to electric signal output.

Shown in Figure 2, the tail end of pedal arm 2 has the first confined planes 24, and has the second confined planes 15 on the corresponding housing 1 of this first confined planes 24.Under state of nature, the first confined planes 24 contacts with the second confined planes 15, guarantees the idle position of pedal arm 2.

Pedal arm 2 is positioned at rotating shaft 21 left sides belows and has the 3rd confined planes 23, and has the 4th confined planes 14 on the corresponding housing 1 of the 3rd confined planes 23.When pushes pedals arm 2 makes its rotation, the 3rd confined planes 23 on pedal arm 2 finally contacts with the 4th confined planes 14 of housing 1, and this is the mechanical stop of pedal arm 2.

The maximum anglec of rotation of pedal arm 2 can be regulated by the position that changes the 3rd confined planes 23 on pedal arm 2, and then changes the rotating range of pedal arm 2.

Shown in Fig. 2,3, be positioned at the tail end of pedal arm 2 at power bradytoia life structure, this power bradytoia life structure comprises pedestal 25, spring locating piece 5, spring assembly 6, push rod 7 and friction element 8.

Pedestal 25 is positioned at the tail end of pedal arm 2.In pedestal 25 rear ends, a push rod support slot 26 is arranged.Push rod 7 is that a side has cylindric draw-in groove 71, and an other side is the block of cambered surface 72.Friction element 8 is that a side is the lamellar body that the other side of cambered surface 82 has rotating shaft 81.The rotating shaft 81 of friction element 8 is installed in the cylindric draw-in groove 71 of push rod 7.Push rod 7 is placed in the support slot 26 of pedestal 25 rear ends together with friction element 8.The cambered surface 72 of push rod is inside.

One side of spring locating piece 5 is vertical plane 52, and an other side is wedge shape inclined-plane 51 wide at the top and narrow at the bottom.Spring locating piece 5 is arranged on the top of pedestal 25, and vertical plane 52 is front, and wedge shape inclined-plane 51 is rear, and wedge shape inclined-plane 51 contacts with the cambered surface 72 of push rod 7.

As shown in Figure 2, the upper surface of supposing spring locating piece 5 is the first spring locating surface, has the second spring locating surface 13 on housing 1, and spring assembly 6 is located between the first spring locating surface and the second spring locating surface 13.

During state of nature, the pressure that spring assembly 6 deformation provide, make the trend of spring locating piece 5 in moving downward, the lozenges 51 of spring locating piece 5 contacts with the cambered surface 72 of push rod 7, forces push rod 7 radially outside movement tendency in the push rod support slot 26 of pedestal 25.The friction face 82 of friction element 8 contacts with the inwall 12 of housing 1, and is subject to inwall 12 spacing of housing 1.The pressure of 6 pairs of spring locating pieces 5 of spring assembly is converted into the pressure of the inwall 12 of 8 pairs of housings 1 of friction element with the ratio of fixing thus.Drive friction element 8 motions when pedal arm 2 rotates, 12 of the inwalls of the friction face 82 of friction element 8 and housing 1 produce kinetic force of friction.The position difference of pedal arm 2, spring assembly 6 deformation differences, to the positive pressure difference of spring locating piece 5, cause the pressure difference of the inwall 12 of 8 pairs of housings 1 of friction element, so the friction force difference.Therefore follow the power residual effect fruit that pedal arm 2 diverse locations change.Push rod 7 can outwards move in the groove 26 of pedestal 25 together with friction element 8, and the axle 81 of friction element 8 can, in the interior certain limit rotation of the groove 71 of push rod 7, make the stagnant system of this power have adaptation function.

At the material decision of friction element 8 and housing 1, can be by changing the model of spring assembly 6, the degree of dip on wedge shape inclined-plane 51 that maybe can be by changing spring locating piece 5 is carried out the stagnant effect of change power.

The rotating shaft 41 of sensor assembly 4 is connected with pedal arm 2.Shown in Fig. 4,5, a side of pedal arm 2 has cross slot 22, and cross post bolt 41 is stretched out in the rotating shaft of sensor assembly 4.Cross post bolt 41 is arranged in cross slot 22, guarantees reliable and effective connection, makes the rotating shaft of sensor assembly 4 synchronize rotation with pedal arm 2.

Abovely by the specific embodiment, the utility model is described in detail, but these not form restriction of the present utility model.Those skilled in the art also can make some distortion and improvement in the situation that do not break away from the utility model principle, and these also should be considered as the protection domain of this patent.

Claims

1. an efp, comprise housing (1), pedal arm (2), case lid (3) and sensor assembly (4), described pedal arm (2) is arranged between housing (1) and case lid (3), it is characterized in that: the power bradytoia life structure that also comprises the tail end that is arranged on pedal arm (2)

This power bradytoia life structure comprises pedestal (25), spring locating piece (5), spring assembly (6), push rod (7) and friction element (8); Pedestal (25) is positioned at the tail end of pedal arm (2);

One end of push rod (7) is cylindric draw-in groove (71), and an other end is cambered surface (72); Push rod (7) and friction element (8) are placed in the end support groove (26) of pedestal (25), and the cambered surface end of push rod (7) is inside;

It is inner that the rotating shaft (81) of friction element (8) is installed on the cylindric draw-in groove (71) of push rod (7), and cylindric draw-in groove (71) opening size of push rod (7) is less than the diameter of friction element rotating shaft (81);

The upper end of pedestal (25) arranges spring locating piece (5), and spring assembly (6) is positioned between spring locating piece (5) and housing (1); The outside cambered surface (82) of friction element (8) contacts with the cambered surface inwall of housing (1);

The rotating shaft of the rotating shaft of pedal arm (21) and sensor assembly (4) connects, and makes rotating shaft and pedal arm (2) synchronous rotary of sensor assembly (4).

2. efp as claimed in claim 1, it is characterized in that: the lower end of spring locating piece (5) is unsettled; Spring locating piece (5) one sides are vertical plane (52), and an other side is wedge shape inclined-plane (51) wide at the top and narrow at the bottom, and this wedge shape inclined-plane (51) contacts with the cambered surface (72) of push rod.

3. efp as claimed in claim 1 or 2, it is characterized in that: a side of pedal arm rotating shaft (21) has cross slot (22), the rotating shaft sponson of sensor assembly (4) has cross post bolt (41), and pedal arm rotating shaft (21) and sensor assembly (4) rotating shaft are plugged in cross slot (22) and are linked together by cross post bolt (41).

4. efp as claimed in claim 3, it is characterized in that: the upper surface of spring locating piece (5) is the first spring locating surface, have the second spring locating surface (13) on housing (1), spring assembly (6) is positioned between the first spring locating surface and the second spring locating surface (13).