Accelerator mistaken stepping prevention device actuator

Abstract

An accelerator mistaken stepping prevention device actuator comprises a motor, a crank, a connecting rod, an inner box body and an outer box body, and the inner box body is arranged in the outer box body; a reset spring is arranged between the inner box body and the outer box body; under the driving of the connecting rod, the inner box body reciprocates along the guide post in the outer box body; an inner shaft is arranged in the inner box body; a driving gear and a power input wheel are fixedly mounted on the inner shaft in the circumferential direction; the accelerator is connected with the power input wheel; during abnormal work, the motor rotates to sequentially drive the crank and the connecting rod, and the inner box body moves downwards relative to the outer box body along the guide column, so that the driving gear is disengaged from the driven gear, the winding drum is in the free state again, the steel wire rope returns, and the throttle valve is closed; meanwhile, the lifting bolt located above the lifting bolt also descends along with the lifting bolt, so that a vehicle is triggered to brake. The system has the advantages of being low in false alarm rate, rapid in response, reliable in braking, simple in structure, low in purchase cost and capable of being popularized and applied to other low-end vehicle models in a large scale, and a high-computing-power chip does not need to be purchased.

Description

Technical Field

[0001] The invention belongs to the field of vehicle safety and relates to an accelerator anti-misstepping device actuator, and in particular to an accelerator anti-misstepping device actuator used in conjunction with a pressure sensor. Background Art

[0002] With the rapid development of the automobile industry and the increasing complexity of urban traffic, driving safety issues have attracted more and more attention. Especially in emergency situations, drivers may mistake the accelerator (i.e., the accelerator pedal) for the brake due to nervousness or misoperation, resulting in serious traffic accidents. This misoperation not only poses a threat to vehicle occupants, but also poses a great safety hazard to pedestrians and other road users. At present, technical solutions that can be used to prevent accelerator misoperation include accelerator misoperation prevention control systems based on sensors (ultrasonic / radar sensors, cameras, vehicle speed sensors), accelerator misoperation prevention control systems based on driving behavior detection and analysis (measuring changes in vehicle longitudinal acceleration, monitoring the rate of change of throttle opening, steering angle information), and accelerator misoperation prevention control systems based on data fusion and algorithms. In addition, the existing throttle misoperation prevention execution mechanisms are mostly indirect interference, including the following two types: (1) power limitation, that is, once an erroneous operation is detected, the ECU can immediately reduce the throttle opening, thereby reducing the engine output power; this can be achieved by controlling the throttle motor or adjusting the fuel injection through electronic signals; (2) warning intervention, that is, providing visual and sound warnings to remind the driver of the risk of misoperation, giving him the opportunity to correct the error by himself.

[0003] There are many problems with the existing technology: (1) High false alarm rate: The information obtained based on ultrasonic / radar sensors, cameras, and vehicle speed sensors is often unable to accurately determine whether the driver is in a state of accidentally stepping on the accelerator, which leads to unnecessary intervention and affects the driver's operating fluency; (2) Long response time: As mentioned above, the existing accelerator anti-misstep execution mechanism is mostly indirect interference. The time interval between detecting the misoperation and the actual intervention needs to be as short as possible, but it cannot directly apply braking force to slow down the vehicle; (3) Cost issue: The accelerator anti-misstep control system based on data fusion and algorithms often requires the purchase of high-computing power chips, which has high purchase costs, which limits its application in low-end models. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an actuator for preventing accidental stepping of the throttle, which is characterized by comprising a motor, a crank, a connecting rod, an inner box and an outer box, wherein:

[0005] The outer box body is fixedly arranged on the vehicle;

[0006] The inner box body is arranged inside the outer box body; a return spring is arranged between the inner box body and the outer box body;

[0007] A guide post is arranged in the outer box body, and a guide hole is arranged on the inner box body accordingly; the guide post and the guide hole constitute a moving pair; under the driving of the connecting rod, the inner box body reciprocates along the guide post in the outer box body;

[0008] The motor, crank, connecting rod and inner box are movably hinged in sequence;

[0009] An inner shaft is arranged in the inner box; a driving gear and a power input wheel are fixedly mounted circumferentially on the inner shaft; a throttle is connected to the power input wheel; when the throttle is stepped on, the power input wheel can be driven to rotate;

[0010] An outer shaft is arranged on the outer box body; a driven gear is fixedly mounted on the outer shaft circumferentially; under the elastic restoring force of the return spring, the driving gear and the driven gear remain in meshing state during normal operation;

[0011] The outer shaft is also circumferentially fixedly provided with a drum; a steel wire rope is arranged on the drum; the other end of the steel wire rope is connected to the throttle valve;

[0012] The inner box body is provided with a lifting eye screw, which is connected to the brake via a steel wire rope;

[0013] During normal operation, when the driver steps on the accelerator normally, the power input wheel can rotate a certain angle, thereby driving the driving gear to rotate, and then driving the outer shaft to drive the drum to rotate; the drum pulls the wire rope, thereby opening the throttle;

[0014] During abnormal operation, the motor rotates, thereby driving the crank and connecting rod in sequence, and causing the inner box to move downward along the guide column relative to the outer box, causing the driving gear to disengage from the driven gear, and the drum to be free again, causing the wire rope to recover and the throttle to close; at the same time, the eye screw above it will also drop, triggering the vehicle's brakes.

[0015] Preferably, the inner box and the outer box constitute the main structure of the throttle anti-misstepping device actuator; the main structure of the throttle anti-misstepping device actuator is installed near the throttle;

[0016] Preferably, the power input wheel is a ratchet wheel;

[0017] More preferably, the ratchet comprises a first ratchet and a second ratchet; the first ratchet and the second ratchet are arranged symmetrically about the driving gear;

[0018] Preferably, the inner shaft is circumferentially movably arranged on the inner box body through a rolling bearing; the outer shaft is circumferentially movably arranged on the outer box body through a rolling bearing;

[0019] Preferably, the outer box body is a left-right split structure;

[0020] Preferably, the inner box body is a left-right split structure;

[0021] Preferably, a pair of return springs are arranged symmetrically about the inner box body;

[0022] Preferably, a pair of eye screws are arranged symmetrically about the inner box body;

[0023] Preferably, a pair of guide posts are arranged symmetrically with respect to the outer box body.

[0024] Compared with the prior art, the present invention is beneficial in that:

[0025] (1) Compared with the prior art, the present invention does not rely on information obtained by ultrasonic / radar sensors, cameras, and vehicle speed sensors, but directly determines whether the vehicle is in an abnormal working state based on the force with which the driver steps on the accelerator in an emergency situation. This can accurately determine whether the driver is in a state of mistakenly stepping on the accelerator, avoid interference from external factors such as rain, fog, and obstacles, and have a low false alarm rate.

[0026] (2) Compared with the prior art, in an emergency, the dual safety measures of the present invention take effect simultaneously (cutting off the power source and braking), so that the time interval from detecting an erroneous operation to actual intervention is greatly shortened, the response is rapid, and the braking is reliable;

[0027] (3) Compared with the prior art, the present invention is not developed based on data fusion technology and deep learning algorithms, does not require the purchase of high-computing chips, has low purchase costs, and can be widely promoted and applied in other low-end models;

[0028] (4) The present invention has a simple structure and high operating accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 This is a three-dimensional schematic diagram of the appearance of an actuator of an accelerator anti-misstepping device according to the present invention (the motor, crank and connecting rod are not shown).

[0031] Figure 2 The present invention is a schematic diagram of installing an actuator of an accelerator anti-misstepping device in a vehicle.

[0032] Figure 3 The figure is a schematic diagram of the internal structure of the normal operation of an actuator of a throttle anti-misstepping device according to the present invention.

[0033] Figure 4 The present invention is a schematic diagram of the internal structure of an actuator of a throttle mis-stepping prevention device that does not work properly.

[0034] Figure 5 for Figure 3 Exploded diagram.

[0035] Main parts symbols:

[0036]

[0037] DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0040] like Figures 1 to 5 As shown, the present invention provides an actuator for preventing accidental stepping of the throttle, which is characterized by comprising a motor 12, a crank 11, a connecting rod 10, an inner box 8, and an outer box 9, wherein:

[0041] The inner box 8 and the outer box 9 constitute the main structure of the accelerator anti-misstepping device actuator;

[0042] The accelerator anti-misstepping device actuator is installed in the vehicle; more specifically, Figure 2 As shown, the main structure 13 of the accelerator anti-misstepping device actuator is installed near the accelerator (not numbered);

[0043] The outer box body 9 is fixed on the frame by threaded fasteners;

[0044] The inner box body 8 is arranged in the outer box body 9; a return spring 1 is arranged between the inner box body 8 and the outer box body 9;

[0045] A guide column 91 is vertically arranged in the outer box body 9; a guide hole is correspondingly arranged on the inner box body 8; the guide column 91 and the guide hole constitute a moving pair; under the drive of the connecting rod 10, the inner box body 8 reciprocates along the guide column 91 in the outer box body 9;

[0046] The output shaft of the motor 12, the crank 11, the connecting rod 10 and the protruding portion of the inner box 8 are movably hinged in sequence;

[0047] An inner shaft 3 is horizontally arranged in the inner box 8; a driving gear 2 and a power input wheel are fixedly mounted circumferentially on the inner shaft 3; a throttle is connected to the power input wheel; when the throttle is stepped on, the power input wheel can be driven to rotate;

[0048] An outer shaft 5 is horizontally arranged on the outer box body 9; a driven gear 6 is fixedly mounted circumferentially on the outer shaft 5; under the elastic restoring force of the return spring 1, during normal operation (the force of the driver stepping on the accelerator does not exceed the rated value), the driving gear 2 and the driven gear 6 remain in meshing state;

[0049] The outer shaft 5 is also circumferentially fixedly mounted with a drum 51; a steel wire rope (not shown) is arranged on the drum 51; the other end of the steel wire rope (not shown) is connected to the throttle valve;

[0050] A lifting eye screw 81 is provided on the upper part of the inner box body 8; the lifting eye screw 81 movably passes through the outer box body 9; the lifting eye screw 81 is connected to the brake through a steel wire rope (not shown);

[0051] During normal operation, when the driver normally steps on the accelerator, the ratchet wheel can rotate around the inner shaft 3 in one direction at a certain angle, thereby driving the driving gear 2 to rotate; since the driving gear 2 and the driven gear 6 are in a meshing state, the outer shaft 5 is driven to drive the reel 51 to rotate, and the wire rope is pulled, so that the throttle valve can be gradually opened, allowing more air to enter the combustion chamber, thereby achieving the purpose of normal acceleration;

[0052] During abnormal operation (the driver's accelerator pedal force exceeds the rated value), the motor 12 starts to rotate, thereby driving the crank 11 and the connecting rod 10 in sequence, and causing the inner box 8 together with the inner shaft 3 to move downward along the guide column 91 relative to the outer box 9, causing the driving gear 2 to disengage from the driven gear 6, and the drum 51 to be free again, so that the wire rope is restored and the throttle remains in a closed state; at the same time, the eye screw 81 above it will also drop, triggering the vehicle's braking system.

[0053] Preferably, the power input wheel is a ratchet; the throttle is connected to the ratchet; when the throttle is stepped on, the ratchet can be driven to rotate in one direction; since the ratchet has the function of locking the one-way motion, the safety and reliability of the system are enhanced;

[0054] More preferably, in order to improve the reliability of transmission, the ratchet includes a first ratchet 4 and a second ratchet 7; the first ratchet 4 and the second ratchet 7 are arranged symmetrically about the driving gear 2;

[0055] Preferably, the inner shaft 3 is circumferentially movably arranged on the inner box body 8 through a rolling bearing; the outer shaft 5 is circumferentially movably arranged on the outer box body 9 through a rolling bearing;

[0056] Preferably, the outer box body 9 is a left-right split structure;

[0057] Preferably, the inner box 8 is a left-right split structure;

[0058] Preferably, a pair of return springs 1 are arranged symmetrically about the inner box 8;

[0059] Preferably, a pair of eye screws 81 are arranged symmetrically about the inner box 8;

[0060] Preferably, a pair of guide posts 91 are arranged symmetrically with respect to the outer box body 9 .

[0061] The general use process of the accelerator anti-misstepping device actuator of the present invention is briefly introduced as follows:

[0062] 1) When the accelerator is stepped on normally, the accelerator drives the first ratchet 4 and the second ratchet 7 to rotate, thereby driving the coaxial driving gear 2 to rotate. At the same time, the driven gear 6 matched therewith starts to rotate, driving the reel 51 matched with the key on the outer shaft 5 to rotate, pulling the wire rope connected to the throttle, so that air can enter the combustion chamber, and the vehicle accelerates normally, thereby achieving the purpose of normal driving.

[0063] 2) In an emergency, i.e., abnormal operation, the accelerator pedal is stepped on with great force, the motor 12 starts to rotate, thereby driving the crank 11 to move, the inner box 8 connected to the crank 11 is subjected to downward traction, the return spring 1 is squeezed, and the inner shaft 3 moves downward with the inner box 8, causing the driving gear 2 and the driven gear 6 to no longer mesh, so that the reel 51 is in a free state, the wire rope is automatically recovered, the throttle is closed again, and the air no longer enters the combustion chamber, the combustion inside is insufficient, and sufficient power cannot be provided, and the vehicle speed is reduced. At the same time, as the inner box 8 moves downward, the eye screw 81 placed on the upper part of the inner box 8 also moves downward, and the eye screw is connected to the brake, so that the car brakes; at this time, the car completes the entire braking action, and the accelerator anti-misstepping takes effect.

[0064] Compared with the prior art, the present invention is beneficial in that:

[0065] (1) Compared with the prior art, the present invention does not rely on information obtained by ultrasonic / radar sensors, cameras, and vehicle speed sensors, but directly determines whether the vehicle is in an abnormal working state based on the force with which the driver steps on the accelerator in an emergency situation. This can accurately determine whether the driver is in a state of mistakenly stepping on the accelerator, avoid interference from external factors such as rain, fog, and obstacles, and have a low false alarm rate.

[0066] (2) Compared with the prior art, in an emergency, the eyebolt 81 of the present invention disposed on the upper part of the inner box 8 also moves downward, and the eyebolt is connected to the brake, thereby directly applying braking force to decelerate the vehicle; at the same time, the driving gear 2 and the driven gear 6 are no longer meshed, so that the drum 51 is in a free state, the wire rope is automatically recovered, the throttle is closed again, and the vehicle stops accelerating; the dual safety measures take effect at the same time (cutting off the power source and braking), so that the time interval from detecting the wrong operation to the actual intervention of the present invention is greatly shortened, the response is rapid, and the braking is reliable;

[0067] (3) Compared with the prior art, the present invention is not developed based on data fusion technology and deep learning algorithms, does not require the purchase of high-computing chips, has low purchase costs, and can be widely promoted and applied in other low-end models;

[0068] (4) The present invention cleverly uses the crank-connecting rod principle to convert the rotational motion generated by the motor 12 into linear reciprocating motion, thereby accurately adjusting the position of the inner box 8. This method not only simplifies the mechanical structure, but also significantly improves the operating accuracy.

[0069] In the present invention, it should be understood that the disclosed components and structures can be implemented in other ways. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "including" does not exclude other units or steps, and the singular does not exclude the plural. The words first, second, etc. are used to indicate names, and do not indicate any specific order.

[0070] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention is described in detail with reference to the above preferred embodiments, ordinary technicians in this field should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An actuator for preventing accidental stepping of the throttle, characterized in that: It includes a motor, a crank, a connecting rod, an inner box and an outer box, wherein: The outer box body is fixedly arranged on the vehicle; The inner box body is arranged inside the outer box body; a return spring is arranged between the inner box body and the outer box body; A guide post is arranged in the outer box body, and a guide hole is arranged on the inner box body accordingly; the guide post and the guide hole constitute a moving pair; under the driving of the connecting rod, the inner box body reciprocates along the guide post in the outer box body; The motor, crank, connecting rod and inner box are movably hinged in sequence; An inner shaft is arranged in the inner box; a driving gear and a power input wheel are fixedly mounted circumferentially on the inner shaft; a throttle is connected to the power input wheel; when the throttle is stepped on, the power input wheel can be driven to rotate; An outer shaft is arranged on the outer box body; a driven gear is fixedly mounted on the outer shaft circumferentially; under the elastic restoring force of the return spring, the driving gear and the driven gear remain in meshing state during normal operation; The outer shaft is also circumferentially fixedly provided with a drum; a steel wire rope is arranged on the drum; the other end of the steel wire rope is connected to the throttle valve; The inner box body is provided with a lifting eye screw, which is connected to the brake via a steel wire rope; During normal operation, when the driver steps on the accelerator normally, the power input wheel can rotate a certain angle, thereby driving the driving gear to rotate, and then driving the outer shaft to drive the drum to rotate; the drum pulls the wire rope, thereby opening the throttle; During abnormal operation, the motor rotates, thereby driving the crank and connecting rod in sequence, and causing the inner box to move downward along the guide column relative to the outer box, causing the driving gear to disengage from the driven gear, and the drum to be free again, causing the wire rope to recover and the throttle to close; at the same time, the eye screw above it will also drop, triggering the vehicle's brakes.

2. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: The inner box and the outer box constitute the main structure of the throttle anti-misstepping device actuator; the main structure of the throttle anti-misstepping device actuator is installed near the throttle.

3. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: The power input wheel is a ratchet wheel.

4. The accelerator anti-misstepping device actuator according to claim 3, characterized in that: The ratchet comprises a first ratchet and a second ratchet; the first ratchet and the second ratchet are arranged symmetrically with respect to the driving gear.

5. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: The inner shaft is movably arranged on the inner box body in the circumferential direction through a rolling bearing; the outer shaft is movably arranged on the outer box body in the circumferential direction through a rolling bearing.

6. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: The outer box body is a left-right split structure.

7. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: The inner box is a left-right split structure.

8. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: A pair of return springs are arranged symmetrically about the inner box.

9. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: A pair of eye screws are arranged symmetrically about the inner box body.

10. The accelerator anti-misstepping device actuator according to claim 1, characterized in that: A pair of guide posts are arranged symmetrically with respect to the outer box body.

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