CN113928459A - Flexible transmission type swinging steering device - Google Patents
Flexible transmission type swinging steering device Download PDFInfo
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- CN113928459A CN113928459A CN202111238185.6A CN202111238185A CN113928459A CN 113928459 A CN113928459 A CN 113928459A CN 202111238185 A CN202111238185 A CN 202111238185A CN 113928459 A CN113928459 A CN 113928459A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/08—Cycles with handlebars, equipped with three or more main road wheels with steering devices acting on two or more wheels
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Abstract
The invention discloses a flexible transmission type swing steering device, which is a steering device, wherein one part of the steering device can swing back and forth relative to the other part of the steering device, and flexible transmission is adopted between the two parts of the steering device. The steering device is applied to the dynamic balance vehicle, so that the swinging and steering actions of the dynamic balance vehicle are independent, and the dynamic balance control of the vehicle is more free, thereby providing a practical and feasible technical idea for realizing the dynamic balance of the non-integrated steering four-wheel and reverse three-wheel dynamic balance vehicle. The steering transmission system has the advantages of good instantaneity of steering transmission, accurate and flexible steering control and the like, and is simple and compact in structural design and stable and reliable in transmission.
Description
Technical Field
The present invention relates to a steering apparatus for a vehicle, and more particularly, to a flexible transmission type swing steering apparatus.
Background
The prior small electric vehicle or motorcycle mainly has the following problems: firstly, although the small-sized two-wheeled vehicle is flexible and compact and has good dynamic balance characteristic, the small-sized two-wheeled vehicle cannot be totally closed, and the problems of wind, rain and cold prevention cannot be fundamentally solved; and the two-wheel system has poor anti-skid (braking) capability, particularly anti-sideslip (braking stability), and low safety factor. Secondly, although the small three-wheel or four-wheel vehicle can adopt a fully-closed carriage, the braking performance is enhanced, if the speed is high, the vehicle is easy to turn over, if the vehicle cannot turn over quickly, the vehicle width needs to be increased, and the advantages of compactness and flexibility are lost, so that the conventional small three-wheel or four-wheel vehicle cannot be too high in speed, and the size in the width direction is more than 1 meter, so that the applicable crowd and occasions of the small three-wheel or four-wheel vehicle are greatly limited.
In order to solve the above problems of the existing small electric vehicle or motorcycle, a patent of a man-machine combined balance car (patent number 201922148722.2) proposes a solution combining the respective advantages of a two-wheel vehicle and a three-wheel/four-wheel vehicle, namely, a chassis of the three-wheel or four-wheel vehicle is adopted, but a vehicle body can freely swing left and right on the chassis, the vehicle body is balanced by the balance control of a driver when the vehicle runs, namely, the three-wheel or four-wheel vehicle (herein, the vehicle is called as a dynamic balance car) driven by the driving balance principle of the two-wheel vehicle is used, so that the stability of the traditional small three-wheel or four-wheel vehicle when the vehicle runs at high speed is solved, and the braking stability of the three-wheel or four-wheel vehicle and the protection effect of a closed carriage on people are obtained. However, in this patent application, the front wheels of the inverted tricycle and the quadricycle are directly connected to the steering handle as the steering wheel, as in the case of the regular tricycle, which makes the inverted tricycle and the quadricycle substantially regular tricycles, equivalent to having an ultra wide front wheel, which is inclined with the swing of the vehicle body. Therefore, how to realize the reverse three-wheel and four-wheel dynamic balance vehicle with more practicability needs further improvement on the steering device.
Chinese patent No. ZL201480067213.4 discloses a "vehicle with tilting frame", the tilting frame 2 of which can be tilted relative to the main frame 1 and has a tilting axis 35 (the reference number in patent 201480067213.4 is used here), but whose track rod actuating element 39 can be moved relative to the tilting frame 2 and is actuated by tilting of the tilting frame 2 about the tilting axis 35 and, independently thereof, by rotation of the steering axis 59, so that the at least one steerable contact element 3a is subjected to a steering movement by means of the at least one track rod 7, and the track rod actuating element 39 can be moved relative to the main frame 1 by tilting of the tilting frame and, independently of the tilting, by rotation of the steering tube 6 for actuation of the at least one track rod 7. It can be seen that the vehicle disclosed in this patent application has a body frame tilt that is related to the steering of the vehicle, i.e. there are two factors in the actuation of the track rod 7: tilting of the tilting frame 2 and rotation through the axis 59; thus, the tilting of the vehicle affects the steering of the vehicle, whereas the steering movement of the vehicle also affects the tilting of the vehicle body. It is known from the dynamic balancing principle of two-wheeled vehicles that the tilting and steering of the vehicle body are separate and irrelevant, otherwise the vehicle body cannot achieve dynamic balancing. For example, when a two-wheeled vehicle passes through a curve at high speed, the inclination angle of the vehicle body is large, but the steering of the vehicle is fine; when the two-wheeled vehicle is running at low speed, a slight body lean requires a large degree of steering to bring the body back to the equilibrium point again, so it can be seen that there is no clear correlation between body lean and steering, otherwise it is difficult to achieve the dynamic equilibrium of the vehicle in the true sense, that is, although the vehicle proposed by this patent has a tiltable frame, tilting about the tilting axis, it cannot achieve the principle of dynamic equilibrium of the two-wheeled vehicle in the true sense, and its balancing function is defective.
Chinese patent application No. 201610157690.0 discloses "a forced control frame and wheel automatic balance mechanism for motor tricycle", its balance mechanism divides the car into two parts front and back, and the front part contains the front wheel, and the rear portion contains the rear wheel, and whole front portion is connected with the rear portion through "frame connecting bearing group", and the front portion can be relatively the rear portion around the axis swing of bearing like this, and this patent application has two characteristics: firstly, the balance side inclination is forcibly controlled; the other is that during the tilting or swinging process of the vehicle body, the front wheel as the steering wheel swings along with the vehicle body in a tilting way, and as all the wheels are always grounded, the wheels tilt along with the swinging as a result of the swinging. Neither of these features can create the destabilizing swing or tilt required for dynamic balance similar to a two-wheel vehicle, and therefore it cannot create a dynamic balance state similar to a two-wheel vehicle.
In summary, for a dynamic balance vehicle, under the condition that wheels do not swing and incline along with a vehicle body, how to enable a vehicle body which can swing freely and is unstable to be on a chassis which can steer and is stable without any other external force to realize dynamic balance becomes a main difficulty of realizing dynamic balance of the dynamic balance vehicle, particularly a four-wheel or reverse three-wheel dynamic balance vehicle, and how to realize that steering of the vehicle and swinging of the vehicle body are not influenced mutually is a main contradiction for overcoming the problems. Therefore, it is necessary to design a steering device for a dynamic balance vehicle, which can achieve the steering of the vehicle and the swinging of the vehicle body without influencing each other.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the problem that the steering action of the existing swingable vehicle and the swinging action of the vehicle are mutually interfered and real dynamic balance cannot be realized, and provides a flexible transmission type swing steering device, by adopting the technical scheme of the invention, a flexible transmission mechanism can be freely bent along with the swinging or the tilting of the vehicle, so that the steering motion of the vehicle and the swinging or the tilting motion of the vehicle are not influenced mutually, a feasible practical technical thought is provided for realizing the dynamic balance of the non-integrally steered four-wheel and three-wheel dynamic balance vehicle, the swinging and the steering actions of the dynamic balance vehicle are mutually independent, the dynamic balance control of the vehicle is more free, and the driving safety and the operation flexibility of the vehicle are greatly improved; and the steering device has simple and compact structural design and stable and reliable transmission.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a flexible transmission type swing steering device which is arranged on a vehicle with a steering control part of the vehicle swinging or inclining relatively to a steering wheel containing part of the vehicle, and comprises a steering operation component, a steering execution component and a flexible transmission mechanism, wherein the steering operation component is arranged on the steering control containing part of the vehicle, the steering execution component is arranged on the steering wheel containing part of the vehicle, the steering operation component is connected with the steering execution component through the flexible transmission mechanism, the flexible transmission mechanism can freely bend along with the swinging or inclining of the steering control containing part of the vehicle relative to the steering wheel containing part of the vehicle, the steering motion of the vehicle is input from the steering operation component and output from the steering execution component, and the flexible transmission mechanism transmits the steering motion of the vehicle from the steering operation component to the steering execution component so as to ensure that the steering motion of the vehicle and the swinging or inclining of the steering control containing part of the vehicle relative to the steering wheel containing part of the vehicle The oblique movements do not affect each other.
Furthermore, the flexible transmission mechanism adopts a steel wire sleeve pipeline, the steel wire sleeve pipeline comprises a steel wire and a sleeve, the steel wire is used as a wire core and is arranged in the sleeve, the steel wire can axially slide back and forth relative to the sleeve, and the steel wire and the sleeve form the flexible steel wire sleeve pipeline which can be bent together; one end of the sleeve is fixed on a portion, containing a steering control, of the vehicle, the other end of the sleeve is fixed on a portion, containing a steering wheel, of the vehicle, one end of the steel wire extends out of a corresponding end of the sleeve to be connected with the steering operation assembly, and the other end of the steel wire extends out of a corresponding end of the sleeve to be connected with the steering execution assembly.
Still further, the steering operation assembly is a device that converts steering motion of a vehicle into traction of the wire; the steering actuation assembly is a device that converts relative sliding of the wire relative to the sleeve into a push-pull motion to a knuckle of a steerable wheel.
Furthermore, the steering operation assembly comprises a steering tap, an active traction device and a sleeve initial end fixing piece, wherein the steering tap is rotatably arranged on a part containing steering operation of the vehicle, the active traction device is fixed on a shaft of the steering tap, the sleeve initial end fixing piece is fixed on the part containing steering operation of the vehicle, the initial end of the steel wire is fixed on the active traction device, and the initial end of the sleeve is fixed on the sleeve initial end fixing piece;
two groups of steel wire sleeve pipelines are symmetrically arranged on two sides of the steering faucet, when the steering faucet turns to one side, the active traction device is driven to rotate to one side, and the active traction device is used for drawing the steel wire on one side, so that the steel wire slides relative to the sleeve; when the steering faucet turns to the other side, the steel wire at the side which is dragged before is driven by the active traction device to be released, and the steel wire at the side which is released before is dragged.
Furthermore, the steering execution assembly comprises a sleeve terminal fixing piece, a driven traction device, a conversion device and a steering pull rod, wherein the sleeve terminal fixing piece and the conversion device are respectively installed on a part of the vehicle, which contains a steering wheel, the conversion device comprises a rotating shaft and a steering force arm, the driven traction device and the steering force arm are respectively fixed on the rotating shaft, the terminal of the sleeve is fixed on the sleeve terminal fixing piece, the terminal of the steel wire is fixed on the driven traction device, and the outer end of the steering force arm is connected with a steering knuckle of the steering wheel through the steering pull rod;
when the steering wheel is steered, the pulled steel wire drives the driven traction device and the rotating shaft to rotate, the rotating shaft drives the steering force arm to rotate around the rotating shaft, and push-pull steering motion is transmitted to a steering knuckle of the steering wheel through the steering pull rod.
Furthermore, the contact surface of the active traction device and the steel wire is of a circular arc structure, the circle center of the circular arc contact surface is the rotation center of the active traction device, and the steel wire is always pulled along the tangential direction of the circular arc contact surface.
Furthermore, the contact surface of the driven traction device and the steel wire is of an arc-shaped structure, the circle center of the arc-shaped contact surface is the rotation center of the driven traction device, and the steel wire always pulls the driven traction device along the tangent line of the arc-shaped contact surface.
Furthermore, the steering execution assembly comprises a sleeve terminal fixing piece, and the terminal of the steel wire is directly connected with the steering knuckle of the steering wheel of the vehicle so as to directly pull the steering knuckle of the steering wheel to steer.
Furthermore, the flexible transmission mechanism adopts a transmission flexible shaft which can be bent and can transmit rotation, one end of the transmission flexible shaft is connected with the steering operation assembly, and the other end of the transmission flexible shaft is connected with the steering execution assembly.
Furthermore, the steering operation assembly comprises a steering tap and an upper coupler, the steering execution assembly comprises a lower coupler, a conversion device and a steering pull rod, the conversion device comprises a rotating shaft and a steering force arm, the steering tap is rotatably installed on a part of the vehicle containing steering control, the shaft of the steering tap is connected with one end of a transmission flexible shaft through the upper coupler, the other end of the transmission flexible shaft is connected with the rotating shaft of the conversion device through the lower coupler, the rotating shaft is rotatably installed on a part of the vehicle containing a steering wheel, one end of the steering force arm is fixedly connected with the rotating shaft, and the outer end of the steering force arm is connected with a steering knuckle of the steering wheel through the steering pull rod;
when the steering tap steers to one side, the upper coupling drives the transmission flexible shaft to rotate, the transmission flexible shaft drives the rotating shaft of the conversion device to rotate through the lower coupling, the rotating shaft drives the steering force arm to rotate around the rotating shaft, and push-pull steering motion is transmitted to a steering knuckle of the steering wheel through the steering pull rod; in the steering process, when the steering operation assembly swings or inclines relative to the steering execution assembly, the transmission flexible shaft swings and bends along with the steering operation assembly by virtue of flexibility, so that the swinging of the steering operation assembly does not influence the steering transmission of the vehicle.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the invention relates to a flexible transmission type swing steering device which is arranged on a vehicle, wherein the part of the vehicle containing steering control relatively swings or inclines relative to the part of the vehicle containing steering wheels, and a flexible transmission mechanism can freely bend along with the swing or inclination of the part of the vehicle containing steering control relative to the part of the vehicle containing steering wheels, so that the steering motion of the vehicle and the swing or inclination motion of the vehicle are not affected with each other, a feasible technical thought is provided for realizing dynamic balance of a non-integrated steering four-wheel dynamic balance vehicle and a reverse three-wheel dynamic balance vehicle, the swing and steering actions of the dynamic balance vehicle are independent, the dynamic balance control of the vehicle is more free, and the running safety and the operation flexibility of the vehicle are greatly improved;
(2) according to the flexible transmission type swing steering device, the characteristic of the flexible transmission mechanism is utilized, the steering motion of the steering operation assembly can be synchronously transmitted to the steering execution assembly, meanwhile, the free swing or inclination of a vehicle is not influenced, and the flexible transmission mechanism has the advantages of good instantaneity, accurate and flexible steering control and the like; moreover, the steering device has simple and compact structural design and stable and reliable transmission;
(3) the flexible transmission type swinging steering device has the advantages that the flexible transmission mechanism adopts a steel wire sleeve pipeline, the steel wire sleeve pipeline comprises a steel wire and a sleeve, the steel wire and the sleeve form the flexible steel wire sleeve pipeline which can be bent together, the action transmission between the steering operation assembly and the steering execution assembly is realized by utilizing the traction and sliding of the steel wire in the sleeve, the structure is simple, and the steering transmission action is direct and efficient;
(4) the invention relates to a flexible transmission type swinging steering device, wherein a steering operation assembly comprises a steering faucet, a driving traction device and a sleeve initial end fixing piece, a steering execution assembly comprises a sleeve terminal fixing piece, a driven traction device, a conversion device and a steering pull rod, two groups of steel wire sleeve pipelines are symmetrically arranged on two sides of the steering faucet, when the steering faucet turns to one side, the driving traction device drives steel wires in one group of steel wire sleeve pipelines to be pulled, the steel wires in one group of steel wire sleeve pipelines are released, and the steel wires synchronously drive the driven traction device to move so as to realize steering of a steering wheel; the steering action of the steering faucet is directly transmitted to the steering execution assembly through a steel wire, so that the transmission is stable and reliable; in addition, the contact surfaces of the driving traction device, the driven traction device and the steel wire line adopt an arc-shaped structure, the circle center of the arc-shaped contact surface is the rotation center of the traction device, and the transmission of the steel wire sleeve pipeline is more stable and efficient through the winding and releasing of the steel wire line on the driving traction device and the driven traction device, thereby being beneficial to the design of the movement tracks of the two ends of the steel wire line and being more beneficial to the contact stress among the steel wire line, the driving traction device and the driven traction device;
(5) according to the flexible transmission type swing steering device, the steering execution assembly comprises the sleeve terminal fixing piece, the terminal of the steel wire is directly connected with the steering knuckle of the steering wheel of the vehicle and used for directly dragging the steering knuckle of the steering wheel to steer, and by adopting the structural design, the transmission structure in the steering execution assembly is omitted, so that the structure of the steering device is simplified, and the steering transmission action is direct and efficient;
(6) according to the flexible transmission type swing steering device, the flexible transmission mechanism adopts the transmission flexible shaft which can be bent and can transmit rotation, one end of the transmission flexible shaft is connected with the steering operation assembly, the other end of the transmission flexible shaft is connected with the steering execution assembly, the transmission flexible shaft is adopted, the connection between the steering faucet and the steering execution assembly can be realized through the shaft coupling at the two ends of the transmission flexible shaft, the transmission mechanism of the steering device is further simplified, the transmission flexible shaft can also be rotated and freely bent, and the steering movement of a vehicle and the swing or tilt movement of the vehicle are not influenced by each other.
Drawings
Fig. 1 is a schematic structural view of a flexible transmission type swing steering apparatus according to embodiment 1 of the present invention;
FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 1 at I;
fig. 5 is a schematic structural view of a flexible transmission type swing steering apparatus according to embodiment 2 of the present invention.
The reference numerals in the schematic drawings illustrate:
1. a steering operation assembly; 11. a steering faucet; 12a, an active traction device; 12b, an upper coupler; 13a, a sleeve initial end fixing piece;
2. a steering actuation component; 21a, a sleeve terminal fixing piece; 21b, a lower coupling; 22a, a driven traction device; 23. a conversion device; 24. a steering tie rod; 231. a rotating shaft; 232. a steering moment arm;
3. a flexible transmission mechanism; 3a, steel wire sleeve pipelines; 3a1, steel wire; 3a2, cannula; 3b, a flexible transmission shaft.
Detailed Description
For a further understanding of the present invention, the inventive concepts of the present invention will now be described in detail.
The invention relates to a flexible transmission type swing steering device which is arranged on a vehicle, wherein a part of the vehicle, which contains a steering control, is relatively swung or inclined relative to a part of the vehicle, which contains a steering wheel, for example, the vehicle, wherein the steering wheel of the vehicle is not inclined along with the swinging or inclination of a vehicle body. The flexible transmission type swing steering device comprises a steering operation component 1, a steering execution component 2 and a flexible transmission mechanism 3, wherein the steering operation component 1 is arranged on a part containing steering control of a vehicle, the steering execution component 2 is arranged on the part containing steering wheels of the vehicle, the steering operation component 1 is connected with the steering execution component 2 through the flexible transmission mechanism 3, the flexible transmission mechanism 3 can freely bend along with the swinging or inclining of the part containing steering control of the vehicle relative to the part containing steering wheels of the vehicle, the steering motion of the vehicle is input from the steering operation component 1 and output from the steering execution component 2, the flexible transmission mechanism 3 transmits the steering motion of the vehicle from the steering operation component 1 to the steering execution component 2, and the steering motion of the vehicle and the swinging or inclining motion of the part containing steering control of the vehicle relative to the part containing steering wheels of the vehicle are not influenced by each other, the dynamic balance control method provides a practical technical idea for realizing dynamic balance of the non-integrated steering four-wheel and reverse three-wheel dynamic balance vehicle, so that the swinging and steering actions of the dynamic balance vehicle are independent, the dynamic balance control of the vehicle is more free, and the driving safety and the operation flexibility of the vehicle are greatly improved. Meanwhile, the characteristic of the flexible transmission mechanism 3 is utilized, the steering motion of the steering operation component 1 can be synchronously transmitted to the steering execution component 2, the free swing or inclination of the vehicle is not influenced, the hysteresis of the steering transmission action is small, and the rotation control is accurate and flexible; and the steering device has simple and compact structural design and stable and reliable transmission.
The invention is further described below with reference to the figures and examples.
[ example 1]
Referring to fig. 1 to 4, the flexible transmission type swing steering apparatus of the present embodiment is mounted on a vehicle in which a portion including a steering operation of the vehicle swings or tilts relative to a portion including a steered wheel of the vehicle, and is configured to enable a steering operation of the steered wheel of the vehicle and the swinging or tilting operation of the vehicle to be independent or independent from each other. The steering operation component 1 is arranged on a part containing steering control of a vehicle, the part containing steering control of the vehicle can swing or incline relative to the part containing steering wheels of the vehicle, the steering execution component 2 is arranged on the part containing steering wheels of the vehicle and is used for controlling the steering wheels of the vehicle to steer, the steering operation component 1 is connected with the steering execution component 2 through the flexible transmission mechanism 3, the flexible transmission mechanism 3 can swing or incline relative to the part containing steering wheels of the vehicle and freely bend along with the part containing steering control of the vehicle, the steering motion of the vehicle is input from the steering operation component 1 and output from the steering execution component 2, the flexible transmission mechanism 3 transmits the steering motion of the vehicle from the steering operation component 1 to the steering execution component 2, the steering movement of the vehicle and the swinging or tilting movement of the part of the vehicle containing the steering control relative to the part of the vehicle containing the steering wheel are not affected mutually. The part of the vehicle containing the steering control can be called a vehicle body, the part of the vehicle containing the steering wheels can be called a vehicle chassis, the vehicle body is also provided with a steering operation assembly 1, the vehicle chassis is provided with a steering execution assembly 2 and wheels, and the steering execution assembly 2 is in transmission connection with the steering wheels in the wheels.
Specifically, in this embodiment, the flexible transmission mechanism 3 adopts a steel wire sleeve pipeline 3a, the steel wire sleeve pipeline 3a includes a steel wire 3a1 and a sleeve 3a2, the steel wire 3a1 is arranged in the sleeve 3a2 as a wire core, and the steel wire 3a1 can slide back and forth in the axial direction relative to the sleeve 3a2, the steel wire 3a1 and the sleeve 3a2 form a flexible steel wire sleeve pipeline 3a capable of bending together, the steel wire 3a1 and the sleeve 3a2 are both flexible and can be bent together, and the section of the sleeve 3a2 is hardly deformed during bending, so that the sliding of the steel wire 3a1 in the sleeve 3a2 is not affected, so that the steel wire sleeve pipeline 3a can perform two non-interfering movements, that is, namely, the flexible bending movement of the steel wire 3a1 together with the sleeve 3a2 and the sliding of the steel wire 3a1 relative to the sleeve 3a 2; one end of the sleeve 3a2 is fixed on the part of the vehicle containing steering control, and the other end of the sleeve 3a2 is fixed on the part of the vehicle containing steering wheel, i.e. the sleeve 3a2 is used for keeping the steel wire 3a1 to perform bending movement; one end of the steel wire 3a1 extends out of the corresponding end of the sleeve 3a2 to be connected with the steering operation component 1, the other end of the steel wire 3a1 extends out of the corresponding end of the sleeve 3a2 to be connected with the steering execution component 2, and the traction movement of the steel wire 3a1 is used for realizing the transmission of the steering movement of the steering operation component 1 to the steering execution component 2. By adopting the steel wire sleeve pipeline 3a, the action transmission between the steering operation component 1 and the steering execution component 2 is realized by utilizing the traction and sliding of the steel wire 3a1 in the sleeve 3a2, the structure is simple, and the steering transmission action is direct and efficient. The steel wire sleeve pipeline 3a is the prior art, such as a speed change cable and a brake cable which are commonly used for bicycles, the innovation of the invention is not in the steel wire sleeve pipeline, but in the application form of the steel wire sleeve pipeline 3a in a steering device of a vehicle capable of swinging, and the characteristic that the steel wire sleeve pipeline can flexibly bend and relatively slide to transmit traction force is utilized, so that the steering motion of the vehicle and the swinging or tilting motion of the vehicle are not influenced mutually. In addition, as a complete wire-sheathed line, it is a sheath fixing device which cannot be separated from both ends of the sheath, because it is necessary to fix the sheath 3a2 or the wire 3a1 (conventionally, the sheath 3a2 is fixed) to form a relative sliding movement between the wire 3a1 and the sheath 3a 2. For illustration purposes, the casing fixing device is respectively placed in the steering operation assembly 1 and the steering actuation assembly 2, namely, the casing starting end fixing member 13a and the casing ending end fixing member 21a, but this should not be construed as a limitation of the present invention.
Further, in the present embodiment, the steering operation assembly 1 is a device that converts the steering motion of the vehicle into traction of the wire 3a 1; the steering actuator assembly 2 is a device that converts the relative sliding of the wire 3a1 with respect to the sleeve 3a2 into a push-pull motion to the knuckle of the steered wheel. Specifically, as shown in fig. 1 and 2, the steering operation assembly 1 includes a steering tap 11, an active traction device 12a and a casing starting end fixing member 13a, the steering tap 11 is rotatably mounted on a portion of the vehicle including a steering operation, the active traction device 12a is fixed on a shaft of the steering tap 11, the steering tap 11 is rotated to drive the active traction device 12a to synchronously rotate, the casing starting end fixing member 13a is fixed on the portion of the vehicle including the steering operation, a starting end of the steel wire 3a1 is fixed on the active traction device 12a, and a starting end of the casing 3a2 is fixed on the casing starting end fixing member 13 a; two groups of steel wire sleeve pipelines 3a are symmetrically arranged at two sides of a steering tap 11, when the steering tap 11 steers to one side, an active traction device 12a is driven to rotate to one side, the active traction device 12a pulls the steel wire 3a1 at one side, and the steel wire 3a1 slides relative to a sleeve 3a 2; when the steering handle 11 is steered to the other side, the previously pulled one side wire 3a1 is released by the active traction device 12a, and the previously released one side wire 3a1 is pulled, thereby achieving the left and right steering control of the vehicle. As shown in fig. 3, the steering executing assembly 2 includes a sleeve terminal fixing member 21a, a driven traction device 22a, a converting device 23 and a steering rod 24, the sleeve terminal fixing member 21a and the converting device 23 are respectively mounted on a portion of the vehicle including a steering wheel, the converting device 23 includes a rotating shaft 231 and a steering arm 232, the driven traction device 22a and the steering arm 232 are respectively fixed on the rotating shaft 231, the rotating shaft 231 is rotatably mounted on the portion of the vehicle including the steering wheel, a terminal end of the sleeve 3a2 is fixed on the sleeve terminal fixing member 21a, a terminal end of the steel wire 3a1 is fixed on the driven traction device 22a, and an outer end of the steering arm 232 is connected with a knuckle of the steering wheel through the steering rod 24; during steering, the pulled steel wire 3a1 drives the driven traction device 22a and the rotating shaft 231 to rotate, the rotating shaft 231 drives the steering arm 232 to rotate around the rotating shaft 231, and push-pull steering motion is transmitted to a steering knuckle of a steering wheel through the steering pull rod 24. The steering action of the steering tap 11 is directly transmitted to the steering actuating component 2 through the steel wire 3a1, and the transmission is smooth and reliable. In the steering actuator assembly 2, a specific embodiment is shown in the present embodiment, and the connection between the steering arm 232 and the tie rod 24, and the tie rod 24 and the knuckle needs to use spherical bearings to adapt to the spatial position variation caused by the shock absorption and damping of the suspension system required by the wheel, which are in the prior art, so that the detailed description of the part is not repeated here.
Further preferably, the contact surface between the active traction device 12a and the steel wire 3a1 is in an arc shape, the center of the arc contact surface is the rotation center of the active traction device 12a, and the steel wire 3a1 is always pulled along the tangential direction of the arc contact surface; the contact surface of the driven traction device 22a and the steel wire 3a1 is in a circular arc structure, the circle center of the circular arc contact surface is the rotation center of the driven traction device 22a, and the steel wire 3a1 always pulls the driven traction device 22a along the tangent line of the circular arc contact surface. The driving traction device 12a and the driven traction device 22a can be designed into sheave structures with wire grooves, and by winding and releasing the steel wire 3a1 on the driving traction device 12a and the driven traction device 22a, the transmission of the steel wire sleeve pipeline 3a is more stable and efficient, the design of the motion tracks of two ends of the steel wire 3a1 is facilitated, and the contact stress between the steel wire 3a1 and the driving traction device 12a and the driven traction device 22a is also more facilitated. Of course, the contact surfaces of the driving traction device 12a, the driven traction device 22a and the steel wire 3a1 are not only circular arc-shaped structures, but may be designed into a curved cam or the like according to the steering design requirement.
As another preferred embodiment, the steering actuation assembly 2 includes a sleeve terminal fixing member 21a, and the terminal end of the steel wire 3a1 is directly connected to the knuckle of the steered wheel of the vehicle to directly pull the knuckle of the steered wheel to steer; the conditions for forming this structure are: the amount of drawing of the steel wire 3a1 in one set of the wire jacket pipeline 3a matches the amount of discharge of the steel wire 3a1 in the other set of the wire jacket pipeline 3 a. By adopting the structural design, a transmission structure in the steering execution assembly 2 is omitted, so that the structure of the steering device is simplified, and the steering transmission action is more direct and efficient.
[ example 2]
Referring to fig. 5, the basic structure and operation principle of the flexible transmission type swing steering apparatus of this embodiment are the same as those of embodiment 1, except that:
in this embodiment, the flexible transmission mechanism 3 is a flexible transmission shaft 3b capable of bending and transmitting rotation, one end of the flexible transmission shaft 3b is connected with the steering operation assembly 1, and the other end of the flexible transmission shaft 3b is connected with the steering execution assembly 2. The transmission flexible shaft 3b is in the prior art, can be bent and can transmit rotation, the steering angular displacement is transmitted and changed by utilizing the characteristic that the transmission flexible shaft 3b transmits rotation, the swinging action of the vehicle is met by utilizing the bendable characteristic of the transmission flexible shaft 3b, and the two movements do not interfere with each other. The innovation of the invention is that the application form of the flexible transmission shaft 3b in the steering device of the vehicle capable of swinging is not the flexible transmission shaft, and the characteristic that the flexible transmission shaft 3b can flexibly bend and rotate to transmit steering force is utilized, so that the steering motion of the vehicle and the swinging or tilting motion of the vehicle are not influenced mutually.
Specifically, in this embodiment, the steering operation assembly 1 includes a steering tap 11 and an upper coupler 12b, the steering execution assembly 2 includes a lower coupler 21b, a conversion device 23 and a steering pull rod 24, the conversion device 23 includes a rotating shaft 231 and a steering force arm 232, the steering tap 11 is rotatably mounted on a portion of the vehicle including a steering operation, the shaft of the steering tap 11 is connected with one end of a transmission flexible shaft 3b through the upper coupler 12b, the other end of the transmission flexible shaft 3b is connected with the rotating shaft 231 of the conversion device 23 through the lower coupler 21b, the rotating shaft 231 is rotatably mounted on a portion of the vehicle including a steering wheel, one end of the steering force arm 232 is fixedly connected with the rotating shaft 231, and the outer end of the steering force arm 232 is connected with a steering knuckle of the steering wheel through the steering pull rod 24; when the steering tap 11 is steered to one side, the upper coupler 12b drives the transmission flexible shaft 3b to rotate, the transmission flexible shaft 3b drives the rotating shaft 231 of the conversion device 23 to rotate through the lower coupler 21b, the rotating shaft 231 drives the steering force arm 232 to rotate around the rotating shaft 231, and the push-pull steering motion is transmitted to a steering knuckle of a steering wheel through the steering pull rod 24; in the steering process, when the steering operation assembly 1 swings or inclines relative to the steering execution assembly 2, the transmission flexible shaft 3b swings and bends along with the flexibility, namely the upper part of the transmission flexible shaft 3b swings along with the swinging, the closer to the lower part, the smaller the swinging is, and the swinging is not carried out until the position of the upper coupling 12b, so that the swinging of the steering operation assembly 1 does not influence the steering transmission of the vehicle. By adopting the design of the flexible transmission shaft 3b in the embodiment, the two ends of the flexible transmission shaft 3b can be connected with the steering faucet 11 and the steering executing component 2 through the shaft couplings, so that the transmission mechanism of the steering device is further simplified, and the flexible transmission shaft 3b can also freely bend while rotating, so that the steering motion of a vehicle and the swinging or tilting motion of the vehicle are not influenced by each other.
The flexible transmission type swinging steering device provides a feasible technical idea for realizing dynamic balance of a non-integrally steered four-wheel dynamic balance vehicle and a reverse three-wheel dynamic balance vehicle, so that swinging and steering actions of the dynamic balance vehicle are independent, the dynamic balance control of the vehicle is more free, and the driving safety and the operation flexibility of the vehicle are greatly improved. Of course, the flexible transmission type swing steering device is not limited to be applied to four-wheel or reverse three-wheel dynamic balance vehicles, is suitable for occasions that the steering operation part of all vehicles has relative swing or tilt motion relative to the steering wheel, and has a larger application range for the flexible transmission type swing steering device. And the steering device has simple and compact structural design, stable and reliable transmission, easy processing and production and good economical efficiency.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. The utility model provides a flexible transmission formula swing turns to device which characterized in that: the steering operation component (1) is mounted on the vehicle with the steering operation part relatively swinging or inclining relative to the steering wheel part of the vehicle, the steering operation component (2) is mounted on the steering wheel part of the vehicle, the steering execution component (2) is mounted on the steering wheel part of the vehicle, the steering operation component (1) is connected with the steering execution component (2) through the flexible transmission mechanism (3), the flexible transmission mechanism (3) can freely bend along with the swinging or inclining of the steering wheel part of the vehicle relative to the steering wheel part of the vehicle, the steering motion of the vehicle is input from the steering operation component (1) and output from the steering execution component (2), and the flexible transmission mechanism (3) transmits the steering motion of the vehicle from the steering operation component (1) to the steering execution component (2), the steering movement of the vehicle and the swinging or tilting movement of the part of the vehicle containing the steering control relative to the part of the vehicle containing the steering wheel are not affected mutually.
2. The flexible drive pendulum steering device of claim 1, wherein: the flexible transmission mechanism (3) adopts a steel wire sleeve pipeline (3a), the steel wire sleeve pipeline (3a) comprises a steel wire (3a1) and a sleeve (3a2), the steel wire (3a1) is used as a wire core and arranged in the sleeve (3a2), the steel wire (3a1) can axially slide back and forth relative to the sleeve (3a2), and the steel wire (3a1) and the sleeve (3a2) form the flexible steel wire sleeve pipeline (3a) which can be bent together; one end of the sleeve (3a2) is fixed on a part of the vehicle containing steering control, the other end of the sleeve (3a2) is fixed on a part of the vehicle containing steering wheels, one end of the steel wire (3a1) extends out of the corresponding end of the sleeve (3a2) and is connected with the steering operation component (1), and the other end of the steel wire (3a1) extends out of the corresponding end of the sleeve (3a2) and is connected with the steering execution component (2).
3. A flexible drive type steering device according to claim 2, wherein: the steering operation assembly (1) is a device that converts the steering motion of a vehicle into traction of the wire (3a 1); the steering actuation assembly (2) is a device for converting the relative sliding of the wire (3a1) relative to the sleeve (3a2) into a push-pull movement of the steering knuckle of the steered wheel.
4. A flexible drive type steering device according to claim 3, wherein: the steering operation assembly (1) comprises a steering tap (11), an active traction device (12a) and a sleeve initial end fixing piece (13a), wherein the steering tap (11) is rotatably installed on a part containing steering operation of a vehicle, the active traction device (12a) is fixed on a shaft of the steering tap (11), the sleeve initial end fixing piece (13a) is fixed on the part containing steering operation of the vehicle, the initial end of the steel wire (3a1) is fixed on the active traction device (12a), and the initial end of the sleeve (3a2) is fixed on the sleeve initial end fixing piece (13 a);
the two groups of the steel wire sleeve pipelines (3a) are symmetrically arranged on two sides of the steering faucet (11), when the steering faucet (11) turns to one side, the active traction device (12a) is driven to rotate to one side, and the active traction device (12a) pulls the steel wire (3a1) on one side, so that the steel wire (3a1) slides relative to the sleeve (3a 2); when the steering tap (11) steers to the other side, the previously pulled one side wire (3a1) is released by the active traction device (12a), and the previously released one side wire (3a1) is pulled.
5. A flexible drive type steering device according to claim 3, wherein: the steering execution assembly (2) comprises a sleeve terminal fixing piece (21a), a driven traction device (22a), a conversion device (23) and a steering pull rod (24), wherein the sleeve terminal fixing piece (21a) and the conversion device (23) are respectively installed on a part of a vehicle, which contains a steering wheel, the conversion device (23) comprises a rotating shaft (231) and a steering force arm (232), the driven traction device (22a) and the steering force arm (232) are respectively fixed on the rotating shaft (231), the terminal of the sleeve (3a2) is fixed on the sleeve terminal fixing piece (21a), the terminal of the steel wire (3a1) is fixed on the driven traction device (22a), and the outer end of the steering force arm (232) is connected with a steering knuckle of the steering wheel through the steering pull rod (24);
when the steering wheel is steered, the pulled steel wire (3a1) drives the driven traction device (22a) and the rotating shaft (231) to rotate, the rotating shaft (231) drives the steering force arm (232) to rotate around the rotating shaft (231), and push-pull steering motion is transmitted to a steering knuckle of the steering wheel through the steering pull rod (24).
6. The flexible drive pendulum steering device of claim 4, wherein: the contact surface of the active traction device (12a) and the steel wire (3a1) is of an arc-shaped structure, the circle center of the arc-shaped contact surface is the rotation center of the active traction device (12a), and the steel wire (3a1) is always pulled along the tangential direction of the arc-shaped contact surface.
7. The flexible drive pendulum steering device of claim 5, wherein: the contact surface of the driven traction device (22a) and the steel wire (3a1) is of an arc-shaped structure, the circle center of the arc-shaped contact surface is the rotation center of the driven traction device (22a), and the steel wire (3a1) always pulls the driven traction device (22a) along the tangent line of the arc-shaped contact surface.
8. A flexible drive pendulum steering device according to claim 3, 4 or 6, wherein: the steering execution assembly (2) comprises a sleeve terminal fixing piece (21a), and the terminal end of the steel wire (3a1) is directly connected with the steering knuckle of the steering wheel of the vehicle so as to directly pull the steering knuckle of the steering wheel to steer.
9. The flexible drive pendulum steering device of claim 1, wherein: the flexible transmission mechanism (3) adopts a transmission flexible shaft (3b) which can be bent and can transmit rotation, one end of the transmission flexible shaft (3b) is connected with the steering operation assembly (1), and the other end of the transmission flexible shaft (3b) is connected with the steering execution assembly (2).
10. The flexible drive pendulum steering device of claim 9, wherein: the steering operation assembly (1) comprises a steering tap (11) and an upper coupling (12b), the steering execution assembly (2) comprises a lower coupling (21b), a conversion device (23) and a steering pull rod (24), the conversion device (23) comprises a rotating shaft (231) and a steering moment arm (232), the steering tap (11) is rotatably arranged on a part of the vehicle containing steering control, the shaft of the steering tap (11) is connected with one end of the transmission flexible shaft (3b) through an upper coupling (12b), the other end of the transmission flexible shaft (3b) is connected with a rotating shaft (231) of the conversion device (23) through a lower shaft coupling (21b), the rotating shaft (231) is rotatably arranged on the part of the vehicle containing the steering wheel, one end of the steering force arm (232) is fixedly connected with the rotating shaft (231), the outer end of the steering force arm (232) is connected with a steering knuckle of a steering wheel through a steering pull rod (24);
when the steering tap (11) steers to one side, the upper coupler (12b) drives the transmission flexible shaft (3b) to rotate, the transmission flexible shaft (3b) drives the rotating shaft (231) of the conversion device (23) to rotate through the lower coupler (21b), the rotating shaft (231) drives the steering force arm (232) to rotate around the rotating shaft (231), and the steering pull rod (24) transmits push-pull steering motion to a steering knuckle of a steering wheel; in the steering process, when the steering operation assembly (1) swings or inclines relative to the steering execution assembly (2), the flexible transmission shaft (3b) swings and bends along with the flexibility, so that the swinging of the steering operation assembly (1) does not influence the steering transmission of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111238185.6A CN113928459A (en) | 2021-10-25 | 2021-10-25 | Flexible transmission type swinging steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111238185.6A CN113928459A (en) | 2021-10-25 | 2021-10-25 | Flexible transmission type swinging steering device |
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| CN113928459A true CN113928459A (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111238185.6A Pending CN113928459A (en) | 2021-10-25 | 2021-10-25 | Flexible transmission type swinging steering device |
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