CN104943730A - Steering device with temporary locking function at automobile tire blow-out moment - Google Patents

Abstract

The invention relates to a steering device with a temporary locking function at the instant of a car tire blowout. The device mainly includes a car steering system, a driving gear, a driven gear, a locking mechanism and the like. It is characterized in that: the locking mechanism is installed on the steering shaft in the steering system of the car, and the steering shaft will generate a large moment of inertia when the front wheel of the car blows out, and the moment of inertia will make the weighted swing bar of the self-locking mechanism overcome its limit When the spring rotates and touches the locking cam, the locking cam moves and drives the locking ratchet block to lock the ratchet group, thereby locking the steering system. Down reset, the lock is released, at this moment the driver can freely control the steering system. The steering device of the run-flat-proof automobile has simple structure and good reliability. When the tire of the automobile blows out, the steering system can be momentarily and temporarily locked, so that the driving direction of the automobile remains unchanged, and emergency response time is reserved for the driver.

Description

Steering device with temporary locking function at the moment of car tire blowout

technical field

The invention relates to a steering device with a temporary locking function at the moment of a car tire blowout, which is suitable for the technical field of vehicle engineering.

Background technique

When the car is running at high speed, if the front tire blows out, the body will tilt and vibrate, and the steering wheel will deflect to the side of the blown tire under the action of the instantaneous huge torque, causing the car to lose control and cause serious consequences. According to the special investigation report of "Correlation Analysis between Tire Blowout and Highway Traffic Accidents", it is shown that in highway traffic accidents, traffic accidents caused by blown tires account for 34.14% of all traffic accidents, and the casualty rate accounts for 22.55%. When the speed of a vehicle exceeds 100km/h, a tire blows out, and the death rate tends to be 100%. When a car tire blows out, it is difficult for the steering device to control the front wheels to keep going straight, and the tire blowout occurs in an instant of 0.1 seconds, and the driver's reaction to the yaw is delayed, which can easily lead to traffic accidents.

At present, many anti-run tire technologies have appeared in the domestic and foreign markets and have been gradually developed and applied to the high-end automobile market, such as BMW RSC tires, Toyota tire pressure monitoring system and Michelin YAX tire system, etc. Although tire safety is increasingly valued by the public, but at present Most of the relevant safety products start from the prevention of tire blowouts, and there are no mature products that can control the stability of the steering system after a tire blowout. Although the automotive electronic stability control system has a very obvious effect on vehicle stability control, but in the design Did not consider sudden situations such as tire blowout at the time, it is not very ideal aspect controlling the stability of tire blowout car.

Contents of the invention

In order to solve the above problems, the present invention designs an automobile steering device with simple structure and excellent reliability, which can temporarily lock the steering system when the automobile tire blows out, keeps the driving direction of the automobile unchanged, and provides emergency response for the driver. time.

Its technical scheme is that the steering device with a temporary locking function at the moment of a car tire burst is mainly composed of a right front wheel of the car, a steering shaft, a steering wheel, a universal joint, a driven gear, a locking mechanism, a driving gear, a car left front Wheel, steering tie rod, steering gear, mounting frame, locking mechanism mounting support, trapezoidal arm, steering tie rod, locking mechanism installation shaft; the locking mechanism is mainly composed of ratchet group, left weighted swing rod, left weighted Swing lever limit spring, left fixed connecting rod, left trigger cam, left locking ratchet, ratchet holder, right fixed connecting rod, right trigger cam limit spring, right trigger cam, right locking ratchet, right weight Composed of a swing rod, a right weighted swing rod limit spring, and a left trigger cam limit spring; the ratchet group mainly includes a left weighted swing rod limit spring fixing seat, a left weighted swing rod cylindrical pin, a left lock ratchet, and a right lock Ratchet, right weighted swing rod limit spring holder, right weighted swing rod straight pin.

The driving gear is installed on the steering shaft, meshing with the driven gear installed on the locking mechanism installation shaft, the locking mechanism installation shaft is installed on the locking mechanism installation support, and the locking mechanism installation support is installed on the installation frame .

The ratchet group in the locking mechanism is installed on the mounting shaft of the locking mechanism. The left weighted swing rod is arranged in an array and installed at the cylindrical pin of the left weighted swing rod. The other end of the position spring is fixed on the limit spring fixed seat of the left weighted swing rod, and the right weighted swing rod is arranged in an array and installed at the cylindrical pin of the right weighted swing rod, one end of which is connected with one end of the limit spring of the right weighted swing rod, and the right weighted swing rod The other end of the limit spring is fixed on the right weighted fork limit spring holder.

The left locking ratchet mounted on the left fixed connecting rod cooperates with the left trigger cam in an arc movement pair, the left trigger cam is connected with one end of the left trigger cam limit spring, and the other end of the left trigger cam limit spring is fixed on the left fixed connecting rod , one end of the left fixed connecting rod is fixed on the ratchet block fixing frame, and the other end is fixed on the vehicle body.

The right locking ratchet installed on the right fixed post and the right trigger cam cooperate with the arc movement pair, the right trigger cam is connected with one end of the right trigger cam limit spring, and the other end of the right trigger cam limit spring is fixed on the right fixed post , one end of the right fixed connecting rod is fixed on the ratchet block fixing frame, and the other end is fixed on the vehicle body.

The meshing transmission of the driving gear and the driven gear is a speed-up transmission, so that when the steering shaft rotates at a small angle, the locking mechanism on the locking mechanism installation shaft can rotate at a large angle, so that the left weighted swing lever can touch the left side in time. The trigger cam or the right weighted swing lever can touch the right trigger cam in time to ensure the timeliness of locking.

The invention provides a steering device with a temporary locking function at the moment of a car tire blowout. When the left front wheel of the car is blown out, the car has a tendency to deflect to the left instantaneously, which produces a large moment of inertia on the steering shaft, and The moment of inertia is transmitted to the installation shaft of the locking mechanism through the driving gear and the driven gear, so that the locking mechanism on the installation shaft of the locking mechanism generates a large moment of inertia, so that the left weighted pendulum bar overcomes the left weighted pendulum under the instantaneous centrifugal force. When the spring force of the rod limit spring touches the left trigger cam, the left trigger cam will drive the left lock ratchet to lock the left lock ratchet, thereby realizing the lock of the steering shaft. The swing rod resets under the force of the limit spring, and at the same time, the left trigger cam resets under the force of the limit spring of the left trigger cam to release the lock; when the right front wheel of the car blows out, the car instantly deflects to the right. A large moment of inertia is also generated on the steering shaft, which is transmitted to the installation shaft of the locking mechanism through the driving gear and the driven gear, so that the locking mechanism on the installation shaft of the locking mechanism produces a large moment of inertia, resulting in aggravated Under the action of instantaneous centrifugal force, the swing rod overcomes the spring force of the limit spring of the right weighted swing rod, touches the right trigger cam, and the right trigger cam drives the right locking ratchet to lock the right locking ratchet, thereby realizing the locking of the steering shaft , after a tire blowout, the right weighted swing lever resets under the force of the limit spring of the right weighted swing lever, and at the same time, the right trigger cam returns to its original position under the force of the limit spring of the right trigger cam, and the lock is released. The above two lock actions They are all executed in an instant, so the steering wheel can be instantly locked to keep the driving direction of the car unchanged. Spring The lock is released under the force of the spring to ensure that the driver can freely control the steering wheel after an emergency; when the car is running normally or in emergency avoidance, the moment of inertia generated by the driver's steering wheel on the steering shaft is too small to trigger the locking mechanism.

The invention has the advantages of simple structure and good reliability. When the tire of the automobile blows out, the steering system can be locked temporarily, the running direction of the automobile can be kept unchanged, and the emergency response time is reserved for the driver.

Description of drawings

Accompanying drawing 1 is a schematic diagram of the overall external structure of the present invention;

Accompanying drawing 2 is the structural layout schematic diagram of the present invention;

Accompanying drawing 3 is a schematic diagram of a locking mechanism layout;

Accompanying drawing 4 is the second schematic diagram of the layout of the locking mechanism;

Accompanying drawing 5 is the schematic diagram of ratchet group introduction;

Marks in the accompanying drawings: 1. Right front wheel of the car, 2. Steering shaft, 3. Steering wheel, 4. Universal joint, 5. Driven gear, 6. Locking mechanism, 7. Driving gear, 8. Left front of the car Wheel, 9. Steering tie rod, 10. Steering gear, 11. Mounting frame, 12. Locking mechanism mounting support, 13. Trapezoidal arm, 14. Steering tie rod, 15. Locking mechanism mounting shaft, 6.1, Ratchet Group, 6.2, left weighted swing rod, 6.3, limit spring of left weighted swing rod, 6.4, left fixed connecting rod, 6.5, left trigger cam, 6.6, left locking ratchet, 6.7, ratchet fixed frame, 6.8, right Fixed connecting rod, 6.9, right trigger cam limit spring, 6.10, right trigger cam, 6.11, right locking ratchet, 6.12, right weighted swing rod, 6.13, right weighted swing rod limit spring, 6.14, left trigger cam limit Position spring, 6.1.1, limit spring fixed seat of left weighted swing rod, 6.1.2, cylindrical pin of left weighted swing rod, 6.1.3, left locking ratchet, 6.1.4, right locking ratchet, 6.1.5, The limit spring fixing seat of the right weighted swing rod, 6.1.6, the straight pin of the right weighted swing rod.

Detailed ways

The present invention will be further described in conjunction with accompanying drawings 1-5.

The present invention mainly consists of automobile right front wheel 1, steering shaft 2, steering wheel 3, universal joint 4, driven gear 5, locking mechanism 6, driving gear 7, automobile left front wheel 8, steering straight rod 9, steering gear 10. The installation frame 11, the locking mechanism mounting support 12, the trapezoidal arm 13, the steering tie rod 14, and the locking mechanism installation shaft 15; the locking mechanism is mainly composed of the ratchet group 6.1, the left weighted swing rod 6.2, the left weighted Swing rod limit spring 6.3, left fixed connecting rod 6.4, left trigger cam 6.5, left locking ratchet block 6.6, ratchet block fixing frame 6.7, right fixed connecting rod 6.8, right trigger cam limit spring 6.9, right trigger cam 6.10, Right locking ratchet 6.11, right weighted swing rod 6.12, right weighted swing rod limit spring 6.13, left trigger cam limit spring 6.14; the ratchet group 6.1 mainly includes left weighted swing rod limit spring holder 6.1.1, 6.1.2 cylindrical pin of the left weighted swing rod, 6.1.3 of the left lock ratchet, 6.1.4 of the right lock ratchet, 6.1.5 of the limit spring fixed seat of the right weighted swing rod, and 6.1.6 cylindrical pin of the right weighted swing rod.

The driving gear 7 is installed on the steering shaft 2, and it meshes with the driven gear 5 installed on the locking mechanism installation shaft 15. The locking mechanism installation shaft 15 is installed on the locking mechanism installation support 12, and the locking mechanism installation support 12 Installed on the mounting frame 11.

The ratchet group 6.1 in the locking mechanism 6 is installed on the locking mechanism installation shaft 15, and the left weighted swing rod 6.2 is arranged in an array and installed at the left weighted swing rod cylindrical pin 6.1.2, and one end is connected to the left weighted swing rod limit spring 6.3 One end is connected, the other end of the limit spring 6.3 of the left weighted swing rod is fixed on the fixed seat 6.1.1 of the limit spring of the left weighted swing rod, and the right weighted swing rod 6.12 is arranged in an array and installed at the cylindrical pin 6.1.6 of the right weighted swing rod. One end is connected with 6.13 one ends of the right weighted fork limit spring, and the right weighted fork limit spring 6.13 other end is fixed on the right weighted fork limit spring holder 6.1.5.

The left locking ratchet 6.6 is installed on the left fixed connecting rod 6.4, and cooperates with the left trigger cam 6.5 to move in an arc. The left trigger cam 6.5 is connected with one end of the left trigger cam limit spring 6.14, and the left trigger cam limit spring 6.14 The other end is fixed on the left fixed connecting rod 6.4, one end of the left fixed connecting rod 6.4 is fixed on the ratchet block fixing frame 6.7, and the other end is fixed on the vehicle body.

The right locking ratchet 6.11 is installed on the right fixed post 6.8, and cooperates with the right trigger cam 6.10 to move in an arc. The right trigger cam 6.10 is connected to one end of the right trigger cam limit spring 6.9, and the right trigger cam limit spring 6.9 The other end is fixed on the right fixed connecting rod 6.8, one end of the right fixed connecting rod 6.8 is fixed on the ratchet block fixing frame 6.7, and the other end is fixed on the vehicle body.

The meshing transmission of the driving gear 7 and the driven gear 5 is a speed-up transmission, so that when the steering shaft 2 rotates at a small angle, the locking mechanism 6 on the locking mechanism installation shaft 15 can rotate at a large angle, so that the left weighted swing lever 6.2 can touch the left trigger cam 6.5 in time or the right weighted swing rod 6.12 can touch the right trigger cam 6.10 in time to ensure the timeliness of locking.

The invention provides a steering device with a temporary locking function at the moment of a tire blowout. When the left front wheel 8 of the automobile is blown out, the automobile has a tendency to deflect to the left instantly, and this tendency produces a large moment of inertia on the steering shaft 2. , and the moment of inertia is transmitted to the locking mechanism installation shaft 15 through the driving gear 7 and the driven gear 5, so that the locking mechanism 6 on the locking mechanism installation shaft 15 produces a large moment of inertia, causing the left weighted swing bar 6.2 to instantly Under the action of centrifugal force, overcome the spring force of the left aggravated swing rod limit spring 6.3, touch the left trigger cam 6.5, then the left trigger cam 6.5 drives the left locking ratchet 6.6 to lock the left locking ratchet 6.1.3, thereby realizing the steering shaft After the tire blows out, the left weighted swing lever 6.2 resets under the force of the left weighted swing lever limit spring 6.3, and the left trigger cam 6.5 resets under the force of the left trigger cam limit spring 6.14 to release the lock; and When the right front wheel 1 of the car blows out, the car instantly deflects to the right, and this trend also produces a large moment of inertia on the steering shaft 2, which is transmitted to the locking mechanism through the driving gear 7 and the driven gear 5 The shaft 15 is installed so that the locking mechanism 6 on the locking mechanism installation shaft 15 produces a large moment of inertia, so that the right weighted swing bar 6.12 overcomes the spring force of the right weighted swing bar limit spring 6.13 under the instantaneous centrifugal force and touches The right trigger cam 6.10, then the right trigger cam 6.10 drives the right locking ratchet 6.11 to lock the right locking ratchet 6.1.4, thereby realizing the locking of the steering shaft. Reset under the action force of position spring 6.13, and at the same time, the right trigger cam 6.10 returns to its original position under the action force of right trigger cam limit spring 6.9 to release the lock. The above two locking actions are executed instantaneously, so the steering wheel can be instantly locked 3. Keep the driving direction of the car unchanged, and at the same time release the lock under the spring force of the left weighted swing rod limit spring 6.3, the right weighted swing rod limit spring 6.13, the left trigger cam limit spring 6.14, and the right trigger cam limit spring 6.9 It is guaranteed that the driver can control the steering wheel 3 freely after the emergency;

Claims (4)

1. an automobile flat tire has the steering hardware of temporary latch functions instantaneously, it is characterized in that: primarily of Automobile Right front-wheel (1), steering shaft (2), steering handwheel (3), universal-joint (4), driven gear (5), lockable mechanism (6), driving gear (7), automobile the near front wheel (8), steering drag link (9), deflector (10), installation frame (11), lockable mechanism erection support (12), tie rod arm (13), tierod (14), lockable mechanism installation shaft (15) forms; Wherein driving gear (7) is arranged on steering shaft (2), engage with the driven gear (5) be arranged in lockable mechanism installation shaft (15), lockable mechanism installation shaft (15) is arranged on lockable mechanism erection support (12), and lockable mechanism erection support (12) is arranged on installation frame (11).

2. the steering hardware of temporary latch functions is had instantaneously based on automobile flat tire in claim 1, it is characterized in that: aforementioned lockable mechanism (6) is primarily of ratchet group (6.1), fork (6.2) is increased the weight of on a left side, fork limit spring (6.3) is increased the weight of on a left side, left fixed connecting rod (6.4), left activation cam (6.5), left locking sour jujube block (6.6), sour jujube block fixed mount (6.7), right fixed connecting rod (6.8), right activation cam limit spring (6.9), right activation cam (6.10), right locking sour jujube block (6.11), fork (6.12) is increased the weight of on the right side, fork limit spring (6.13) is increased the weight of on the right side, left activation cam limit spring (6.14) composition, described ratchet group (6.1) comprises that fork limit spring permanent seat (6.1.1) is increased the weight of on a left side, fork straight pin (6.1.2) is increased the weight of on a left side, fork limit spring permanent seat (6.1.5) is increased the weight of on left latch ratchet (6.1.3), right latch ratchet (6.1.4), the right side, fork straight pin (6.1.6) is increased the weight of on the right side, ratchet group (6.1) is arranged in lockable mechanism installation shaft (15), a left side is increased the weight of fork (6.2) and is arranged on a left side in array distribution and increases the weight of fork straight pin (6.1.2) place, its one end and a left side are increased the weight of fork limit spring (6.3) one end and are connected, a left side is increased the weight of fork limit spring (6.3) other end and is increased the weight of fork limit spring permanent seat (6.1.1) with a left side and be connected, the right side is increased the weight of fork (6.12) and is arranged on the right side in array distribution and increases the weight of fork straight pin (6.1.6) place, its one end and the right side are increased the weight of fork limit spring (6.13) one end and are connected, the right side increase the weight of fork limit spring (6.13) other end be fixed on the right side increase the weight of fork limit spring permanent seat (6.1.5) be connected, described left locking sour jujube block (6.6) is arranged on left fixed connecting rod (6.4), coordinate with camber line moving sets with left activation cam (6.5), left activation cam (6.5) is connected with left activation cam limit spring (6.14) one end, left activation cam limit spring (6.14) other end is fixed on left fixed connecting rod (6.4), described left fixed connecting rod (6.4) one end is fixed on sour jujube block fixed mount (6.7), and the other end is fixed on vehicle body, right locking sour jujube block (6.11) is arranged on right fixing extension bar (6.8), coordinate with camber line moving sets with right activation cam (6.10), right activation cam (6.10) is connected with right activation cam limit spring (6.9) one end, right activation cam limit spring (6.9) other end is fixed on right fixing extension bar (6.8), the described right side is fixed extension bar (6.8) one end and is fixed on sour jujube block fixed mount (6.7), and the other end is fixed on vehicle body.

3. the steering hardware of temporary latch functions is had instantaneously based on automobile flat tire in claim 1, it is characterized in that: driving gear (7) and driven gear (5) engaged transmission are step-up drive, be convenient to steering shaft (2) under rotation smaller angle, the rotatable larger angle of lockable mechanism (6) in lockable mechanism installation shaft (15), make a left side increase the weight of fork (6.2) left activation cam (6.5) or the right side can be touched in time increase the weight of fork (6.12) right activation cam (6.10) can be touched in time, ensure the promptness of locking.

4. the steering hardware of temporary latch functions is had instantaneously according to automobile flat tire in claim 1-3, it is characterized in that: when automobile the near front wheel (8) is blown out, the trend that the oriented left avertence of instantaneous vehicle is oblique, this trend produces very large torque to steering shaft (2), and by driving gear (7), driven gear (5) by transmission of torque to lockable mechanism installation shaft (15), the lockable mechanism (6) in lockable mechanism installation shaft (15) is made to produce very large torque, a left side is caused to increase the weight of fork (6.2) under momentary centrifugal force effect, overcome the spring force that fork limit spring (6.3) are increased the weight of on a left side, touch left activation cam (6.5), then left activation cam (6.5) drives the left latch ratchet of left locking sour jujube block (6.6) locking (6.1.3), thus realize the locking of steering shaft, after blowing out, a left side is increased the weight of fork (6.2) and is resetted under fork limit spring (6.3) application force is increased the weight of on a left side, left activation cam (6.5) resets under left activation cam limit spring (6.14) application force simultaneously, remove locking, and when Automobile Right front-wheel (1) is blown out, the trend that the oriented right avertence of instantaneous vehicle is oblique, this trend produces very large torque equally to steering shaft (2), this moment is by driving gear (7), driven gear (5) by transmission of torque to lockable mechanism installation shaft (15), the lockable mechanism (6) in lockable mechanism installation shaft (15) is made to produce very large torque, the right side is caused to increase the weight of fork (6.12) under momentary centrifugal force effect, overcome the spring force that fork limit spring (6.13) are increased the weight of on the right side, touch right activation cam (6.10), then right activation cam (6.10) drives the right latch ratchet of right locking sour jujube block (6.11) locking (6.1.4), thus realize the locking of steering shaft, after blowing out, the right side is increased the weight of fork (6.12) and is resetted under fork limit spring (6.13) application force is increased the weight of on the right side, right activation cam (6.10) resets under right activation cam limit spring (6.9) application force simultaneously, remove locking, aforementioned two locking actions are all performing instantaneously, so can moment locking steering handwheel (3), keep automobile enforcement direction constant, increase the weight of fork limit spring (6.3) on a left side simultaneously, fork limit spring (6.13) is increased the weight of on the right side, left activation cam limit spring (6.14), locking is removed under right activation cam limit spring (6.9) acting force of the spring, steering handwheel (3) is freely manipulated after ensureing driver emergency, when automobile normal running or emergent dodge time, the torque that chaufeur manipulation steering handwheel (3) produces steering shaft (2) is too little, is not enough to actuate latch mechanism (6).