CN216269513U

CN216269513U - Simple automobile steering system

Info

Publication number: CN216269513U
Application number: CN202122587646.2U
Authority: CN
Inventors: 程王峰; 孙华双; 卫明; 王鑫; 周俊; 林东; 徐绍聪; 程梦雅; 秦永红; 王雪; 方佳欣
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-04-12
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a simple automobile steering system which comprises a steering wheel, a rotating shaft, a corner signal sensing device, a steering power-assisted mechanism and an electronic control device, wherein a torque arm is fixedly connected to the outer surface of the rotating shaft, a first movable cavity and a second movable cavity which are symmetrically distributed are fixedly connected to the outer surfaces of the left side and the right side of the torque arm, a first reset spring is fixedly connected to the inner part of the first movable cavity, a second reset spring is fixedly connected to the inner part of the second movable cavity, the torque sensors can be divided into a left-turning torque sensor and a right-turning torque sensor, the outer surface of the upper end of a shaft sleeve is fixedly connected with a left-turning torque sensor and a right-turning torque sensor which are symmetrically distributed, and one sides of the left-turning torque sensor and the right-turning torque sensor, which are far away from the rotating shaft, are fixedly connected with baffles. When the rotating shaft rotates, the torque arm elastically contacts acting force with the left-turn torque sensor and the right-turn torque sensor through the first return spring and the second return spring to generate a torque signal and transmit the torque signal to the electronic control device.

Description

Simple automobile steering system

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a simple automobile steering system.

Background

The driver, through a set of dedicated mechanisms, deflects the wheels (steering wheels) of a steering axle (typically a front axle) of the vehicle at an angle relative to the longitudinal axis of the vehicle. When the automobile runs in a straight line, the steering wheel is always subjected to the action of lateral interference force on the road surface and automatically deflects to change the running direction. In this case, the driver can also turn the steered wheels in the opposite direction by using the mechanism, so that the vehicle can return to the original driving direction. The special mechanism for changing or recovering the driving direction of the automobile is called an automobile steering system (commonly called an automobile steering system).

Automotive steering systems fall into two broad categories: mechanical steering systems and power steering systems, and mechanical steering systems use the physical strength of the driver as the steering energy source, wherein all force transmitting members are mechanical. The mechanical steering system consists of three parts, namely a steering control mechanism, a steering gear and a steering transmission mechanism. And the power steering system is a steering system which uses both the physical strength of a driver and the power of an engine as steering energy. Under normal conditions, only a small portion of the energy required for steering the vehicle is provided by the driver, while the majority is provided by the engine through the power steering. However, in the event of a failure of the power steering system, the driver should generally be able to undertake the steering task of the vehicle independently. Therefore, the power steering system is formed by adding a set of power steering device to the mechanical steering system.

The prior patent (publication number: CN106143604A) discloses an automobile steering system rotating at a small angle, which comprises a steering wheel and a rotating shaft, the torque sensor is divided into a left-turn torque sensor and a right-turn torque sensor, the left-turn torque sensor and the right-turn torque sensor are fixed on a shaft sleeve outside a rotating shaft, the shaft sleeve is fixed on an automobile, a torque arm is arranged on the rotating shaft, one end of the torque arm is fixed on the rotating shaft, and can rotate along with the rotating shaft, the left-turn torque sensor and the right-turn torque sensor are positioned on two sides of the torque arm, so that the torque arm can be in contact with the left-turn torque sensor after rotating leftwards for a certain angle, and the torque arm can be in contact with the right-turn torque sensor after rotating rightwards for a certain angle, and the left-turn torque sensor and the right-turn torque sensor can limit the rotation of the torque arm and output a torque signal of the torque arm to the electronic control device.

The simple automobile steering system has the following defects in the specific use process: 1. particularly, when the torque arm is driven by the rotating shaft to rotate, and a driver encounters an emergency, the steering wheel is rapidly rotated, and the faster the steering wheel is, the larger the force used is, so that the left-turn torque sensor and the right-turn torque sensor can generate larger oscillating force when colliding with the torque arm, the larger impact force is easily generated on the torque sensors, and the normal service life of the torque sensors is shortened; 2. when the rotating shaft rotates, the rotating angle is set to be a fixed forward and reverse rotation angle of 120 degrees, and the same rotating angle is set under the condition that a driver runs normally in an emergency, so that automobile parts are easily damaged; 3. when the rotating shaft urges the torque arm to rotate, under the interaction of forces, the torque arm is not protected while impact is generated on the torque sensor, and the service time of the torque arm is shortened.

Therefore, a simple automobile steering system is provided.

SUMMERY OF THE UTILITY MODEL

The present invention provides a simplified steering system for an automobile to overcome the above-mentioned problems of the related art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a simple automobile steering system, which comprises a steering wheel, a rotating shaft, a corner signal sensing device, a steering power-assisted mechanism and an electronic control device, wherein the steering wheel is fixedly connected to the rotating shaft, the corner signal sensing device comprises a torque sensor, a corner sensor and a vehicle speed sensor, the corner sensor can sense the rotating angle of the steering wheel and feed back the rotating angle to the electronic control device, the vehicle speed sensor can feed back the measured speed to the electronic control device, a torque arm is fixedly connected to the outer surface of the rotating shaft, a first movable cavity and a second movable cavity are fixedly connected to the outer surfaces of the left side and the right side of the torque arm, which are symmetrically distributed, a first return spring is fixedly connected inside the first movable cavity, a second return spring is fixedly connected inside the second movable cavity, the torque sensor can be divided into a left-turning torque sensor and a right-turning torque sensor, and a shaft sleeve is positioned between a front fork and a wheel of an automobile, and the outer surface of the upper end of the shaft sleeve is fixedly connected with a left-turn torque sensor and a right-turn torque sensor which are symmetrically distributed, and the baffle is fixedly connected to one side of the left-turn torque sensor and one side of the right-turn torque sensor, which are far away from the rotating shaft.

Preferably, the first movable cavity and the second movable cavity which are fixedly connected with the left side and the right side of the torque arm play a role in protecting the first return spring and the second return spring.

Preferably, the first return spring and the second return spring contact baffle slide to the left-turn torque sensor and the right-turn torque sensor along the same direction, one end of the first return spring and the second return spring elastically deform with the first movable cavity and the second movable cavity and contract with the first movable cavity and the second movable cavity, and the other end of the first return spring and the left-turn torque sensor elastically deform with the right-turn torque sensor.

Preferably, the inclination angle of the baffle plate, the left-turn torque sensor and the right-turn torque sensor is about 120-135 degrees.

Preferably, the rotation axis is set to have a maximum angle change of 135 ° and a minimum angle change of 120 ° between the normal rotation and the reverse rotation.

Preferably, the left-turn torque sensor and the right-turn torque sensor are in elastic contact with the first return spring and the second return spring, and transmit the torsion signal of the torque arm to the electronic output device.

Compared with the prior art, the utility model has the beneficial effects that:

1. through adding activity chamber one and activity chamber two in the torque arm left and right sides, when reset spring one and reset spring two when with the left turn torque sensor with turn right torque sensor elastic contact, will produce elastic deformation's reset spring one and reset spring two shrink in activity chamber one and activity chamber two, not only can prevent that reset spring one and reset spring two from receiving the pressure too big and popping out, can also play the guard action to reset spring one and reset spring two, make it in activity chamber one and activity chamber two elastic deformation.

2. Through at activity chamber one and activity chamber two inside fixed connection reset spring one and reset spring two, carry out elastic contact earlier with the baffle at it along with the torque arm rotation, reduce partly buffer power earlier, then with the left turn torque sensor and the elastic contact of right turn torque sensor, reduce the buffer power as far as, reduce the loss to torque sensor, also be simultaneously to torque arm and reset spring one and the protection of reset spring two.

3. The rotation angle of the rotating shaft is set to be 120-135 degrees, the emergency and the general driving are divided, when a driver meets the emergency, the rotation angle is 135 degrees, the angle set in the general situation is 120 degrees, the requirement of corresponding to different rotation angles under different situations is met, and therefore the service lives of the torque arm and the torque sensor can be prolonged as much as possible.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the detailed description or the prior art description, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall structural view 1 of an embodiment of the present invention;

FIG. 2 is an overall structural view 2 of an embodiment of the present invention;

FIG. 3 is a view showing a structure of a steering assist structure according to an embodiment of the present invention 1;

FIG. 4 is a partial structural view of a steering assist structure according to an embodiment of the present invention, shown in FIG. 2;

description of reference numerals:

1. a steering wheel; 2. a rotating shaft; 3. a torque arm; 4. a first movable cavity; 5. a second movable cavity; 6. a first return spring; 7. a second return spring; 8. a left turn torque sensor; 9. a right-turn torque sensor; 10. a shaft sleeve; 11. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open", "upper", "lower", "top", "middle", "inner", and the like, indicate positional or orientational relationships and are used merely for convenience in describing the utility model and for simplicity in description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Referring to fig. 1-4, the utility model is a simple automobile steering system, comprising a steering wheel 1, a rotating shaft 2, a corner signal sensing device, a steering boosting mechanism and an electronic control device, wherein the steering wheel 1 is fixedly connected to the rotating shaft 2, the corner signal sensing device comprises a torque sensor, a corner sensor and a vehicle speed sensor, the corner sensor can sense the rotating angle of the steering wheel 1 and feed back the rotating angle to the electronic control device, the vehicle speed sensor can feed back the measured speed to the electronic control device, a torque arm 3 is fixedly connected to the outer surface of the rotating shaft 2, a first movable cavity 4 and a second movable cavity 5 are fixedly connected to the outer surfaces of the left side and the right side of the torque arm 3, the first movable cavity 4 is fixedly connected with a first return spring 6, the second movable cavity 5 is fixedly connected with a second return spring 7, the torque sensor can be divided into a left-turn torque sensor 8 and a right-turn torque sensor 9, axle sleeve 10 is located in the middle of car front fork and the wheel, and axle sleeve 10 upper end surface fixed connection has left turn torque sensor 8 and the right turn torque sensor 9 of symmetric distribution, the equal fixedly connected with baffle 11 in one side of axis of rotation 2 is kept away from to left turn torque sensor 8 and right turn torque sensor 9.

In one embodiment, for the torque arm 3, the first movable cavity 4 and the second movable cavity 5 are fixedly connected to the left and right sides of the torque arm 3 to protect the first return spring 6 and the second return spring 7, so that the possibility that the first return spring 6 and the second return spring 7 fall off is reduced, and the service life of the torque arm is further prolonged.

In one embodiment, for the first return spring 6 and the second return spring 7, the contact baffle 11 of the first return spring 6 and the second return spring 7 slides to the left-turn torque sensor 8 and the right-turn torque sensor 9 along the same direction, one end of the contact baffle elastically deforms with the first movable cavity 4 and the second movable cavity 5 and contracts into the first movable cavity 4 and the second movable cavity 5, and the other end of the contact baffle elastically deforms with the left-turn torque sensor 8 and the right-turn torque sensor 9, so that the first return spring 6 and the second return spring 7 respectively contract into the first movable cavity 4 and the second movable cavity 5, and the first return spring 6 and the second return spring 7 are correspondingly protected.

In one embodiment, the angle of inclination of the baffle plate 11 with the left-turn torque sensor 8 and the right-turn torque sensor 9 is about 120-135 ° for the baffle plate 11, so that the driver can rotate about 135 ° in case of emergency, and about 120 ° in normal condition, thereby prolonging the service life of the torque arm and the torque arm sensor as much as possible.

In an embodiment, for the rotating shaft 2, the maximum angle change of the forward rotation and the reverse rotation is set to be 135 ° and the minimum angle change is set to be 120 °, so that the rotating shaft rotates by different angles in an emergency and a normal situation, and further the utilization rate of the rotating shaft 2 in different situations is improved, and the traditional way is optimized and improved correspondingly.

In summary, according to the above technical solution of the present invention, the first return spring can contact with the baffle plate and slide to the left-turning torque sensor after the torque arm rotates a certain angle to the left by the left-turning torque sensor and the right-turning torque sensor, and the second return spring can contact with the baffle plate and slide to the right-turning torque sensor after the torque arm rotates a certain angle to the right. The torque arm can be contacted with the right-turn torque sensor, and finally the acting force is elastically contacted with the left-turn torque sensor and the right-turn torque sensor through the first return spring and the second return spring to generate a torque signal and transmit the torque signal to the electronic control device.

Through the technical scheme, 1, through adding activity chamber one and activity chamber two in the torque arm left and right sides, when reset spring one and reset spring two when with left turn torque sensor and the elastic contact of right turn torque sensor, will produce elastic deformation's reset spring one and reset spring two and contract in activity chamber one and activity chamber two, not only can prevent that reset spring one and reset spring two from receiving the pressure too big and popping out, can also play the guard action to reset spring one and reset spring two, make it in activity chamber one and activity chamber two elastic deformation. 2. Through at activity chamber one and activity chamber two inside fixed connection reset spring one and reset spring two, carry out elastic contact earlier with the baffle at it along with the torque arm rotation, reduce partly buffer power earlier, then with the left turn torque sensor and the elastic contact of right turn torque sensor, reduce the buffer power as far as, reduce the loss to torque sensor, also be simultaneously to torque arm and reset spring one and the protection of reset spring two. 3. The rotation angle of the rotating shaft is set to be 120-135 degrees, the emergency situation and the general driving situation are divided, when a driver meets the emergency situation, the rotation angle is 135 degrees, the angle set in the general situation is 120 degrees, the requirement of corresponding to different rotation angles under different situations is met, and therefore the service lives of the torque arm and the torque sensor can be prolonged as much as possible.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and its practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a plain type car a steering system, includes steering wheel (1), axis of rotation (2), corner signal sensing device, turns to assist drive and electronic control device, steering wheel (1) fixed connection is on axis of rotation (2), corner signal sensing device includes torque sensor, corner sensor and speed sensor, corner sensor can respond to steering wheel (1) turned angle and feed back to electronic control device, speed sensor can feed back electronic control device, its characterized in that with measuring the speed: the outer surface of the rotating shaft (2) is fixedly connected with a torque arm (3), the outer surfaces of the left side and the right side of the torque arm (3) are fixedly connected with a first movable cavity (4) and a second movable cavity (5) which are symmetrically distributed, a first reset spring (6) is fixedly connected inside the first movable cavity (4), a second reset spring (7) is fixedly connected in the second movable cavity (5), the torque sensor can be divided into a left-turning torque sensor (8) and a right-turning torque sensor (9), a shaft sleeve (10) is arranged on the outer side of the rotating shaft (2), the shaft sleeve (10) is positioned between a front fork and a wheel of the automobile, and the outer surface of the upper end of the shaft sleeve (10) is fixedly connected with a left-turning torque sensor (8) and a right-turning torque sensor (9) which are symmetrically distributed, and the left-turn torque sensor (8) and the right-turn torque sensor (9) are fixedly connected with a baffle (11) on one side far away from the rotating shaft (2).

2. A simplified automotive steering system according to claim 1, characterised in that: the left side and the right side of the torque arm (3) are fixedly connected with a first movable cavity (4) and a second movable cavity (5) to protect a first return spring (6) and a second return spring (7).

3. A simplified automotive steering system according to claim 1, characterised in that: reset spring (6) and reset spring two (7) touch screen (11) slide to turning left torque sensor (8) and turning right torque sensor (9) with the situation, and its one end takes place elastic deformation with activity chamber one (4) and activity chamber two (5), and contracts in activity chamber one (4) and activity chamber two (5), and elastic deformation takes place with turning left torque sensor (8) and turning right torque sensor (9) in other one end.

4. A simplified automotive steering system according to claim 1, characterised in that: the inclination angle of the baffle (11) and the left-turning torque sensor (8) and the right-turning torque sensor (9) is about 120-135 degrees.

5. A simplified automotive steering system according to claim 1, characterised in that: the rotating shaft (2) is set to have a maximum angle change of 135 DEG and a minimum angle change of 120 DEG for the forward rotation and the reverse rotation.

6. A simplified automotive steering system according to claim 1, characterised in that: and the left-turn torque sensor (8) and the right-turn torque sensor (9) are in elastic contact with the first return spring (6) and the second return spring (7) and transmit a torsion signal of the torque arm (3) to the electronic control device.