CN108674181B

CN108674181B - Electronic pedal structure

Info

Publication number: CN108674181B
Application number: CN201810810270.7A
Authority: CN
Inventors: 宋志明; 王保东; 谢颖哲
Original assignee: ANHUI PROVINCE JINGRUI AUTOMOBILE COMPONENTS CO LTD
Current assignee: ANHUI PROVINCE JINGRUI AUTOMOBILE COMPONENTS CO LTD
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2024-01-26
Anticipated expiration: 2038-07-23
Also published as: CN108674181A

Abstract

The invention relates to an electronic pedal structure. One end of the pedal is arranged in the shell assembly and can rotate around the shell assembly, and the angle sensor is fixed on the shell assembly; the pedal drives an input shaft of the angle sensor through a rocker-slider mechanism, the rocker-slider mechanism comprises a rocker and a transmission arm, the transmission arm is fixed on the input shaft of the angle sensor, the transmission arm is provided with an outwards protruding slider, the rocker is fixed on the pedal, the rocker is provided with a chute, and the slider is inserted into the chute to form sliding connection; when the pedal rotates, the rocker rotates along with the pedal and drives the transmission arm to rotate through the sliding groove and the sliding block. According to the electronic pedal structure, the sliding block is driven through the sliding groove, so that the angle sensor is driven to generate an angle signal, under the same mechanism principle, the rotation angle of the transmission arm can be amplified, the slope of the rotation angle output signal is smaller, and the problem of fluctuation of the pedal signal under the structural principle is solved.

Description

Electronic pedal structure

Technical Field

The invention relates to an automobile pedal, in particular to an electronic pedal structure.

Background

Pedals, such as accelerator pedals, brake pedals, etc., are used in substantially all vehicles on the market. In the old automobile, the accelerator pedal and the brake pedal are all purely mechanical connection transmission structures. However, with the progress of technology, electronic sensors are gradually used for detecting pedal angles by automobile pedals, and the pedal angles are transmitted to a driving computer for corresponding control. A typical automobile pedal is provided with a pin at the inner end of the pedal, the pin slides in a chute in the sensor, and the sensor obtains angle data. Because the relation of the inner space of the pedal can only place the sensor chute at the proximal end of the pedal, the rotation angle of the sensor is too small, the slope of the output signal is large, the pedal is sensitive to the change of the surrounding environment, and the pedal signal is easy to change and needs to be improved.

Disclosure of Invention

The present invention is directed to an electronic pedal structure that overcomes the above-mentioned drawbacks of the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the electronic pedal structure comprises a shell component, a pedal and an angle sensor, wherein one end of the pedal is arranged in the shell component and can rotate around the shell component, and the angle sensor is fixed on the shell component; the pedal drives an input shaft of the angle sensor through a rocker-slider mechanism, the rocker-slider mechanism comprises a rocker and a transmission arm, the transmission arm is fixed on the input shaft of the angle sensor, the transmission arm is provided with an outwards protruding slider, the rocker is fixed on the pedal, the rocker is provided with a chute, and the slider is inserted into the chute to form sliding connection; when the pedal rotates, the rocker rotates along with the pedal and drives the transmission arm to rotate through the sliding groove and the sliding block.

The electronic pedal structure drives the sliding block through the sliding groove, so that the angle sensor is driven to generate an angle signal, the spatial position of each part is utilized to the greatest extent, the sliding block is placed at the far end of the pedal, the rotation angle of the transmission arm can be amplified under the same mechanism principle, the amplification of the rotation angle is beneficial to solving the sensitivity problem of the change of the pedal signal, namely, under the same pedal stroke angle, the rotation angle is larger, the slope of the output signal of the rotation angle can be smaller, and thus when the external environment has the conditions of interference (such as thermal expansion, cold contraction) and the like on a product, the transmission arm has slight change, but the change of the output signal of the pedal is within the tolerance range, the problem of the fluctuation of the pedal signal under the structural principle is solved, and the robustness of the product is improved.

In one aspect, a compression spring for providing restoring force for the pedal is arranged in the shell assembly, one end of the compression spring is propped against the pedal, and the other end of the compression spring is propped against the shell assembly.

In one aspect, the chute is a straight chute, and in particular, the chute is a rectangular chute with semicircular ends. When the pedal is at the initial position, the connecting line between the rotation center of the transmission arm and the center of the sliding block is used as a reference line, and the axis of the sliding groove in the length direction is collinear with the reference line. The plane perpendicular to the rotation plane of the pedal and passing through the pedal rotating shaft is a reference plane, and the included angle between the reference line and the reference plane is an acute angle between 40 degrees and 50 degrees. The sliding groove can push the sliding block on the driving arm, and the transmission is more linear, direct and effective.

In one aspect, a housing assembly includes a shell and a base that is embedded and secured within the shell. The two sides of the outer side of the pedal are respectively provided with a circular arc convex strip, and the connecting line of the circle centers of the two convex strips is the rotating shaft of the pedal. The base is provided with two semicircular arch plates, the convex strips are in one-to-one correspondence with the semicircular arch plates, and the convex strips are clamped between the shell and the top surfaces of the semicircular arch plates. In addition, the outer surface of the convex strip is sleeved with a wear-resistant sleeve which can generate force stagnation.

In one aspect, the angle sensor is secured to the housing assembly by two snap hooks. The angle sensor comprises a body and a front cover, wherein two clamping hooks are fixedly arranged on the front cover and fixedly clamped on the shell component after penetrating through the body. The shell component is provided with at least two positioning plates for mounting and positioning the sensor, and the angle sensor is provided with positioning holes corresponding to the positioning plates. The assembly of the angle sensor adopts screw connection originally, the torque of the screw needs to be controlled in the process, the assembly time is long, the invention adopts the buckle type, the automatic production assembly can be realized, the process control point is less, and the installation is simple, convenient and rapid.

In one aspect, the shell component is provided with a through hole for the hook to pass through, and one side of the inner wall of the through hole corresponding to the tooth shape of the hook is provided with a boss. In the inserting direction of the clamping hook, an inclined transition surface is arranged between the boss and the inner wall of the through hole. And a stop block for preventing the clamping hook from separating from the through hole is arranged on the opposite surface of the boss arranged on the through hole, and the minimum distance between the stop block and the boss is equal to the thickness of the tooth-shaped part of the clamping hook.

Drawings

Fig. 1 is an exploded view of the electronic pedal structure of the present invention.

Fig. 2 is a perspective view of the bottom view of the housing of the present invention.

Fig. 3 is an exploded view of the pedal and two wear sleeves of the present invention.

Fig. 4-1 is a partial view showing the assembly of the pedal, the base and the angle sensor when the pedal of the present invention is not depressed.

Fig. 4-2 is a partial view of the assembly of the pedal, base and angle sensor of the present invention when the pedal is depressed to a maximum angle.

Fig. 5 is an exploded view of the housing and angle sensor of the present invention.

Fig. 6 is an exploded view of the angle sensor of the present invention.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to specific embodiments.

As shown in fig. 1, the electronic pedal structure includes a housing assembly 100, a pedal 30, and an angle sensor 40, and the housing assembly 100 includes a housing 10 and a base 20, the base 20 being insertedly fixed in the housing 10. The housing 10 and the base 20 can be made of hard plastic or cast iron or aluminum alloy. The pedal 30 may be made of cast iron or an aluminum alloy. The electronic pedal structure is a suspension pedal, and can be used as an accelerator pedal or a brake pedal on an automobile. While the electronics within the angle sensor 40 may be purchased from outside.

As shown in fig. 1, one end of the pedal 30 is disposed in the housing assembly 100 and is rotatable about the housing assembly 100, and the angle sensor 40 may be fixed to the housing assembly 100. The two sides of the outer side of one end of the pedal 30 inserted into the shell 10 are respectively provided with a circular arc convex strip 31, and the connecting line of the centers of the two convex strips 31 is the rotating shaft of the pedal 30. The base 20 is provided with two semicircular arch plates 21, and the convex strips 31 are in one-to-one correspondence with the semicircular arch plates 21. As shown in fig. 2, a semicircular concave portion 11 is provided in the housing 10, and the semicircular concave portion 11 corresponds to the convex strip 31 one by one. The ribs 31 are sandwiched between the semicircular depressions 11 of the housing 10 and the top surface of the semicircular arch plate 21 at the time of installation.

In addition, as shown in fig. 3, in order to improve wear resistance and increase force stagnation, the outer surface of the raised strip 31 is sleeved with a wear-resistant sleeve 60, and the wear-resistant sleeve 60 is made of POM material. The wear sleeve 60 is hollow and circular arc shaped such that the outer ring 61 of the wear sleeve 60 is sandwiched between the ribs 31 and the semicircular recesses 11 of the housing 10, and the inner ring 62 of the wear sleeve 60 is sandwiched between the ribs 31 and the semicircular arch plate 21. And a side plate 63 is arranged at the edge of the outer ring 61 of the wear-resistant sleeve 60, a plurality of positioning holes 64 are arranged on the side plate 63, and a plurality of corresponding positioning rib plates 33 are arranged at the root of the raised line 31. In addition, two positioning posts 65 are disposed inside the inner ring 62 of the wear sleeve 60, and positioning blind holes 34 corresponding to the positioning posts 65 are disposed below the protruding strips 31. When the wear-resistant sleeve 60 is installed, the positioning rib plates 33 are required to be placed in the positioning holes 64, and the positioning columns 65 are inserted into the positioning blind holes 34, so that the wear-resistant sleeve 60 is ensured to be installed correctly and the wear-resistant sleeve 60 cannot shift when being used for multiple times.

As shown in fig. 1, the pedal 30 drives the input shaft of the angle sensor 40 through a rocker slider mechanism 50. In this embodiment, the rocker slider mechanism 50 includes a rocker 51 and a transmission arm 52. The driving arm 52 is plate-shaped, and the driving arm 51 is fixed to the input shaft of the angle sensor 40, and the driving arm 52 is provided with a cylindrical slider 521 protruding outward. By pushing the slider 521, the transmission arm 52 is rotated while the input shaft of the angle sensor 40 follows the rotation, thereby generating an angle signal in the angle sensor 40.

A compression spring (not shown) for providing a restoring force to the pedal 30 is provided in the housing assembly 100. The compression spring is mounted along axis a in fig. 1, with one end of the compression spring abutting against the back of the pedal 30 and the other end abutting against the cylindrical recess 22 of the base 20 of the housing assembly 100.

As shown in fig. 1, the rocker 51 is plate-shaped and is fixed to the pedal 30. The rocker 51 is fixed below the ends of the protruding bars 31, and the tread surface 32 of the pedal 30 and the rocker 51 are the two ends of the pedal 30, respectively. In this embodiment, a sliding slot 511 is formed on the rocker 30, and a slider 521 of the driving arm 52 is inserted into the sliding slot 511 to form a sliding connection. The sliding chute 511 is a straight chute, specifically, the sliding chute 511 is a rectangular chute with semicircular ends.

As shown in fig. 4-1, when the pedal 30 is not depressed in the initial position of the pedal 30, the transmission arm 52 is in the initial position, and the line connecting the center of rotation of the transmission arm 52 and the center of the slider 521 as the reference line D is seen from the direction perpendicular to the rotation plane of the pedal 30, and the longitudinal axis of the chute 511 is collinear with the reference line D. The plane C perpendicular to the rotation plane of the pedal 30 and passing through the rotation axis of the pedal 30 is a reference plane, and the included angle B between the reference line D and the reference plane C is 42 degrees, and the angle detected by the angle sensor 40 is set to zero.

When the pedal 30 is depressed, the rocker 51 rotates, the chute 511 of the rocker 51 rotates, the chute 511 pushes the slider 521 to move, the movement of the slider 521 is limited to rotate around the input shaft of the angle sensor 40, the movement of the slider 521 drives the transmission arm 52 to rotate around the input shaft of the angle sensor 40, and the angle signal change is generated inside the angle sensor 40, so that the angle signal can be transmitted to the driving computer for control. In the state shown in fig. 4-2, the pedal 30 is rotated to a maximum angle, the compression spring (not shown) is compressed to a maximum potential energy, the slider 521 drives the driving arm 52 to rotate to a maximum angle, and the slider 521 is attached to the most distal inner wall of the chute 511. 4-1-4-2, the rotation angle of the driving arm 52 is approximately 60 degrees, that is, the angle sensor 40 detects the angle change of about 60 degrees, so that the slope of the output signal of the angle sensor 40 is smaller, the influence of the external environment on the pedal 30 is smaller in the change generated by the output signal of the angle sensor 40, and the stability of the signal generated by the pedal 30 is good.

As shown in fig. 5, the angle sensor 40 is fastened to the housing 10 by two hooks 41. The casing 10 is provided with a through hole 12 for the hook 41 to pass through, and one surface of the inner wall of the through hole 12 corresponding to the tooth-shaped part 411 of the hook 41 is provided with a boss 13. In the insertion direction of the hook 41, the boss 13 and the inner wall of the through hole 12 are provided with an inclined transition surface 131. When the angle sensor 40 is installed, the hooks 41 are respectively aligned with the through holes 12 and inserted, the tooth-shaped portions 411 of the hooks 41 pass over the transition surface 131 of the boss 13 to reach the top surface of the boss 13, and finally are buckled on the back surface of the boss 13, so that clamping and fixing are completed. In addition, as shown in fig. 5, two positioning plates 15 for mounting and positioning the angle sensor 40 are provided on the housing 10, and positioning holes 42 corresponding to the positioning plates 15 are provided on the angle sensor 40. In this embodiment, the positioning plate 15 is made into a circular tile shape to increase the strength of the positioning plate 15, and the shape and size of the positioning hole 42 should correspond to those of the positioning plate 15.

As shown in fig. 5, a stopper 14 for preventing the hook 41 from coming off the through hole 12 is provided on the opposite surface of the through hole 12 where the boss 13 is provided. The stop 14 is made in two separate pieces in order to avoid cracking failure caused by stress concentration during injection molding due to excessive thickness. The minimum distance between the stopper 14 and the boss 13 is equal to the thickness of the tooth-shaped portion 411 of the hook 41, and when the hook 41 is completely fastened to the back of the boss 13, if the hook 41 is to be separated from the through hole 12, it is difficult to pass the tooth-shaped portion 411 of the hook 41 through the gap between the boss 13 and the stopper 14, and the hook 41 needs to be broken to detach the angle sensor 40. That is, the angle sensor 40 is installed by the hook 41 at one time, and is not detachable after installation, and the angle sensor 40 is not easy to separate due to severe vibration conditions.

As shown in fig. 5, the cross section of the hook 41 is also circular arc-shaped, which can improve the strength.

In addition, as shown in fig. 5, the housing 10 is provided with a middle hole 16 and a circular arc hole 17, wherein the middle hole 16 is used for the middle shaft 522 of the transmission arm 52 to penetrate, and the circular arc hole 17 is used for the sliding block 521 of the transmission arm 52 to penetrate and slide therein.

As shown in fig. 6, the angle sensor 40 includes a body 48 and a front cover 49. The body 48 and the front cover 49 may be made of hard plastic. The angle sensor 40 has electronic components disposed within the body 48. Both hooks 41 are fixedly arranged on the front cover 49, and the hooks 41 pass through the body 48 and are then clamped and fixed on the housing 10 (fig. 5). The body 48 is provided with corresponding through holes 43, and the hooks 41 penetrate through the through holes 43 and then are fastened on the through holes 12 (fig. 5) of the housing 10, so that the body 48 and the front cover 49 of the angle sensor 40 can be firmly fixed on the housing 10.

As shown in fig. 6, the positioning hole 42 is provided on the body 48 of the angle sensor 40 and beside the through hole 43, so that the deformation caused by the large moment generated by the two forces being far apart is avoided. The positioning hole 42 is a penetrating hole on the body 48, the positioning hole 42 does not need to extend to the front cover 49, the positioning plate 15 directly abuts against the front cover 49 after passing through the positioning hole 42, and meanwhile, the clamping hook 41 just fastens the through hole 12 of the shell 10, so that the angle sensor 40 can be installed and fixed without loosening. The angle sensor 40 is installed by adopting a buckle type, so that automatic production and assembly can be realized, the process control points are few, and the installation is simple, convenient and rapid.

According to the electronic pedal structure, the sliding block 521 is driven by the sliding groove 511, so that the angle sensor 40 is driven to generate an angle signal, the spatial position of each part is utilized to the greatest extent, the sliding block 521 is placed at the far end of the pedal 30, therefore, under the same mechanism principle, the rotation angle of the transmission arm 52 can be amplified, the amplification of the rotation angle is helpful for solving the sensitivity problem of the change of the pedal 30 signal, namely, under the same pedal 30 stroke angle, the rotation angle is larger, the slope of the rotation angle output signal can be smaller, and thus, when the external environment has conditions such as interference (such as thermal expansion and contraction) on a product, the transmission arm 52 has slight change, but the change of the output signal of the pedal 30 is within the tolerance range, the problem of the fluctuation of the pedal 30 signal under the structural principle is solved, and the robustness of the product is improved.

The foregoing description is provided to illustrate the technical contents of the present invention by way of example only, so that the reader can easily understand the technical contents, but it is not intended to limit the embodiments of the present invention thereto, and any technical extension or re-creation according to the present invention is protected by the present invention.

Claims

1. The electronic pedal structure comprises a shell component, a pedal and an angle sensor, wherein one end of the pedal is arranged in the shell component and can rotate around the shell component, and the angle sensor is fixed on the shell component; when the pedal rotates, the rocker rotates along with the pedal and drives the transmission arm to rotate through the sliding groove and the sliding block;

the sliding groove is a straight groove; when the pedal is at the initial position, the connecting line between the rotation center of the transmission arm and the center of the sliding block is used as a reference line, and the axis of the sliding groove in the length direction is collinear with the reference line; the plane perpendicular to the rotation plane of the pedal and penetrating through the pedal rotating shaft is a reference plane, and the included angle between the reference line and the reference plane is an acute angle which is more than 40 degrees and less than 50 degrees;

when the pedal rotates to the maximum angle, the sliding block drives the transmission arm to rotate to the maximum angle, and the sliding block is attached to the inner wall of the farthest end of the sliding groove.

2. The electronic pedal structure according to claim 1, wherein a compression spring for providing a restoring force to the pedal is provided in the housing assembly, and one end of the compression spring abuts against the pedal and the other end abuts against the housing assembly.

3. The electronic pedal structure of claim 1 wherein the chute is an elongated slot with semi-circular ends.

4. The electronic pedal structure of claim 1 wherein the housing assembly includes a housing and a base, the base being embedded and secured within the housing; the two sides of the outer side of the pedal are respectively provided with an arc convex strip, and the connecting line of the circle centers of the two convex strips is a rotating shaft of the pedal; the base is provided with two semicircular arch plates, the convex strips are in one-to-one correspondence with the semicircular arch plates, and the convex strips are clamped between the shell and the top surfaces of the semicircular arch plates.

5. The electronic pedal structure of claim 4 wherein the outer surface of the rib is sleeved with a wear sleeve that creates a force hysteresis.

6. The electronic pedal structure of claim 1 wherein the angle sensor is secured to the housing assembly by two snap-locks.

7. The electronic pedal structure of claim 6 wherein the angle sensor comprises a body and a front cover, wherein two hooks are fixedly arranged on the front cover, and the hooks are fixedly clamped on the housing assembly after passing through the body.

8. The electronic pedal structure according to claim 6, wherein the housing assembly is provided with at least two positioning plates for mounting and positioning an angle sensor, and the angle sensor is provided with positioning holes corresponding to the positioning plates.

9. The electronic pedal structure according to claim 6, wherein the housing assembly is provided with a through hole for the hook to pass through, and a boss is arranged on one surface of the inner wall of the through hole corresponding to the tooth shape of the hook; in the inserting direction of the clamping hook, an inclined transition surface is arranged between the boss and the inner wall of the through hole.

10. The electronic pedal structure according to claim 9, wherein a stopper for preventing the hook from coming off the through hole is provided on an opposite face of the through hole where the boss is provided, and a minimum distance between the stopper and the boss is equal to a thickness of a tooth-shaped portion of the hook.