Tiltable suspension balance mechanism and tiltable suspension vehicleTechnical Field
The invention relates to the technical field of motorcycles, in particular to a tiltable suspension balance mechanism and a tiltable suspension vehicle.
Background
With the development of economy and the progress of society, people pursue more and more high individualization for comfort type vehicles for traveling. Various types of electric motorcycles are used as commuting tools, and the electric motorcycles are developed towards individuality and comfort. The existing motorcycles generally adopt a two-wheel structure, and the two-wheel motorcycles bring convenience for traveling to thousands of households, but have great hidden dangers, such as sideslip and side turning during sudden turning, steering accidents caused by insufficient tire grabbing force during rain and snow or cold weather, and the like.
In order to solve the above problems, a tiltable suspension vehicle is gradually raised in the market at present, which is a tricycle with front wheels provided with left and right wheels and rear wheels provided with one wheel, wherein the two front wheels have steering functions, and the rear wheels have driving functions. By adopting the structural form, under the complex terrain environment, the stable and safe passing performance is better than that of a two-wheel vehicle, particularly, the tire grabbing force is stronger than that of the two-wheel vehicle during turning, and compared with a four-wheel motorcycle, the structure is obviously simpler, the cost is lower, and therefore, the two-wheel vehicle is popular with people. But the front suspension mechanism of the existing tiltable suspension vehicle is unreasonable in arrangement, so that the connection is effectively avoided, the required transmission is realized, the connection strength is low, and the vehicle operability is poor when the vehicle encounters a road surface with poor road condition.
For this reason, china patent application number 202111160084.1 discloses an inverted three-wheeled front suspension mechanism and an inverted three-wheeled electric vehicle, which comprise a main support, a buffer mechanism, a steering mechanism, a locking mechanism and a swinging mechanism, wherein the buffer mechanism, the steering mechanism, the locking mechanism and the swinging mechanism are arranged on the main support, the swinging mechanism is connected with front wheels arranged on two opposite sides of the main support through a steering knuckle, the steering mechanism is connected with the steering knuckle, the swinging mechanism comprises a first rocker arm assembly and a second rocker arm assembly which are respectively hinged with the main support, and one sides of the first rocker arm assembly and the second rocker arm assembly, which are far away from the main support, are respectively hinged with the steering knuckle. The buffer mechanism comprises a first shock absorber and a second shock absorber which are respectively arranged between the front support arm and the rear support arm of the two groups of rocker arm assemblies, and the stability of the vehicle is improved through the structure.
However, since the first rocker arm assembly and the second rocker arm assembly are disposed in parallel up and down and extend to a position close to the inner side of the wheel and the shock absorbers on both sides are disposed, a large amount of steering space on the inner side of the wheel is occupied, and thus there is a limitation in steering angle of the wheel. The front suspension mechanism can lead the steering angle of the vehicle to be larger during steering, namely, the vehicle needs to turn a large curve during over-bending steering, and further, the operability of the vehicle is reduced during narrow roads or crowded road conditions, and the turning and reversing process in the steering process is time-consuming and labor-consuming.
And because its structure is complicated and be difficult to the lightweight and subtract heavy, cause whole car design focus to be close to the front, also can influence the driving experience of backing the driver, have the risk of side to roll when the bending is crossed to low-speed especially, influence the vehicle operability when turning at low speed, low-speed bending.
Meanwhile, aiming at four-wheel motorcycles on the market, the main representation is that the beach vehicle belongs to a non-road running vehicle, the main function is recreation, all beach vehicles cannot be high in speed, the vehicle body cannot be inclined when turning and bending, the turning radius is larger, thus the sport recreation function is greatly limited, the four-wheel motorcycles adopting the tiltable front suspension balancing mechanism and the rear tilting technology are under development, the four-wheel motorcycles with the characteristics become substitute products of the existing four-wheel beach vehicles, and the sport, recreation and recreation experience of the four-wheel motorcycles is greatly increased.
Disclosure of Invention
The invention aims to provide a tiltable suspension balance mechanism and a tiltable suspension vehicle, which are used for solving the problems of complex structure, heavy steering and inflexible operation of the front suspension mechanism of the conventional tiltable suspension vehicle.
In order to achieve the above purpose, the present application adopts the following scheme:
in a first aspect, the present application provides a tiltable suspension balancing mechanism comprising:
The steering mechanism comprises a steering rod, a steering transmission connecting rod, a steering knuckle and a steering support connecting rod; the steering rod is connected with the steering knuckle through the steering transmission connecting rod, and the steering knuckle is connected with the front hub; the steering support connecting rod is connected with the steering knuckle and is arranged on the front side of the steering transmission connecting rod along the extending direction of the vehicle body;
The damping assembly comprises a damper and a damping spring, the damping spring is sleeved on the outer side of the damper, and the upper end of the damper is connected with the steering mechanism;
The swing arm assembly comprises a left large swing arm, a right large swing arm, a left small swing arm and a right small swing arm; one end of the left large swing arm adjacent to the right large swing arm is hinged with a first hinge part; one end of the left small swing arm, which is close to the left large swing arm, is hinged to the middle part of the left large swing arm through a second hinge shaft, and one end of the right small swing arm, which is close to the right large swing arm, is hinged to the middle part of the right large swing arm through a third hinge shaft; one end, close to the right small swing arm, of the left small swing arm is hinged through a first hinge shaft; the lower end of the damper is provided with the first hinge shaft;
The steering device comprises a steering support connecting rod, a steering knuckle and a steering support connecting rod, and is characterized by further comprising a hub hinging shaft, wherein the steering knuckle and the steering support connecting rod are hinged with the hub hinging shaft and can rotate relative to the hub hinging shaft in the horizontal direction, one end, close to a front hub, of the left large swing arm and the right large swing arm is connected with the steering support connecting rod in a rotating manner, and the left large swing arm and the right large swing arm can deflect relative to the steering support connecting rod in a vertical plane.
As a preferred embodiment of the present application, the steering transmission link includes a left steering transmission link and a right steering transmission link, the steering support link includes a left steering support link and a right steering support link, and the knuckle includes a left knuckle and a right knuckle; the left steering transmission connecting rod is connected with the left steering knuckle and the right steering transmission connecting rod is connected with the right steering knuckle through a universal joint;
The left steering knuckle and the left steering support connecting rod are respectively connected with the wheel hub hinge shaft on the left side; the left steering knuckle and the left steering support connecting rod can rotate around the hub hinging shaft in the horizontal direction, and the left large swing arm can swing up and down relative to the left steering support connecting rod in the vertical direction; the right steering knuckle and the right steering support connecting rod are respectively connected with the hub hinging shaft on the right side; the right knuckle and the right steering support connecting rod can rotate around the hub hinging shaft in the horizontal direction, and the right large swing arm can swing up and down relative to the right steering support connecting rod in the vertical direction.
As a preferred embodiment of the present application, the left large swing arm includes a left front arm and a left rear arm, the second hinge shaft being provided between the left front arm and the left rear arm; the right large swing arm comprises a right front arm and a right rear arm, and the third hinge shaft is arranged between the right front arm and the right rear arm; the left steering support connecting rod is connected with the right steering support connecting rod through a ball joint connecting shaft.
As a preferred embodiment of the present application, a reinforcing portion is provided between the left forearm and the left rear arm, and between the right forearm and the right rear arm.
As a preferred embodiment of the present application, one of the left small swing arm and the right small swing arm has a middle hinge part, and the other of the two is provided with a bifurcated hinge part; the middle hinge part is hinged to the middle of the first hinge shaft, and the bifurcation hinge part is hinged to two ends of the first hinge shaft.
As a preferred embodiment of the present application, the axes of the steering rod, the damper, and the first hinge shaft are on one plane in the vertical direction, and the axes of the steering rod and the damper are perpendicular to the axis of the first hinge shaft.
As a preferred embodiment of the present application, the axes of the second hinge shaft and the third hinge shaft are parallel to the axis of the steering rod and are located at equal distances between the left forearm and the left rear arm, and between the right forearm and the right rear arm.
As a preferred embodiment of the present application, the first hinge member includes a bracket, and a left hinge shaft and a right hinge shaft provided on the bracket, the left hinge shaft being rotatably connected to the left large swing arm, and the right hinge shaft being rotatably connected to the right large swing arm.
In a second aspect, the present application also provides a tiltable suspension vehicle comprising a frame, a rear wheel provided on the frame, and a tiltable suspension balancing mechanism as described above.
As a preferred embodiment of the present application, the front part of the frame is provided with a first connecting part connected with the first hinge member and a second connecting part connected with the steering support link; the frame is also provided with a composite connecting piece, the steering rod is rotationally connected with the composite connecting piece, and the upper end of the damper is fixedly connected with the lower end of the composite connecting piece.
By adopting the technical scheme, the application has the following beneficial effects:
1. The large swing arm and the small swing arm are directly connected and then connected with the steering support connecting rod, so that the installation space occupied by the swing arm assembly on the inner side of the wheel is reduced, more sufficient steering space is provided for steering the wheel, the steering angle of the wheel can be increased to reduce the turning radius under narrow roads and complex road conditions, and the turning reversing under the narrow roads and complex road conditions can be conveniently realized; meanwhile, the buffer assemblies are only provided with one group and are arranged in the middle of the whole front suspension mechanism, so that occupation of the front suspension mechanism on steering space on the inner side of the wheel is further reduced, steering of a vehicle is facilitated, and maneuverability of the vehicle is improved.
2. The wheel hub hinge shaft, the steering knuckle and the front wheel hub connected with the wheel hub hinge shaft can deflect relative to the swing arm assembly in a vertical plane under the action of the steering support connecting rod, so that the front wheel hub can incline at a certain angle relative to the ground during steering, further, the vehicle can realize bending operation, the risk of rolling of the vehicle is reduced, and better driving experience is brought to drivers and passengers.
3. Compared with the prior art that the buffer vibration reduction devices are respectively arranged on the two sides of the steering rod, the buffer assembly is arranged in the buffer assembly, so that the resistance brought by the buffer vibration reduction devices in the steering process is reduced, the steering load is reduced, and the steering is lighter.
4. The steering transmission link and the steering support link in the application are both above the front hub in the vertical direction and are retracted toward the steering rod. Compared with the prior art, the steering device has the advantages that the main support is arranged or the steering transmission structure is arranged between the two front hubs, so that a large amount of steering space on the inner side of the front hubs is occupied, the steering transmission connecting rod and the steering support connecting rod are convenient to increase steering and telescopic travel, the front hubs are convenient to drive to obtain larger steering amplitude, and the vehicle is more flexible to operate under the conditions of narrow roads and/or crowded roads, and is smoother in turning and reversing.
5. The tiltable suspension balance mechanism only adopts one group of buffer components, and the large swing arm and the small swing arm in the swing arm components are directly connected, so that compared with other tiltable suspension balance mechanisms in the prior art, the tiltable suspension balance mechanism has the advantages of fewer parts, simpler structure, more convenient assembly and disassembly and is beneficial to overhauling and maintenance; and the weight of the whole front suspension mechanism is reduced, so that the steering load is reduced, the steering is lighter and more flexible, and better use experience is provided for a user.
6. The frame of the tiltable suspension vehicle is directly connected with the front suspension mechanism, compared with the existing inverted three-wheel fuel/electric vehicle or four-wheel fuel/electric motorcycle, the frame reduces the arrangement of the front suspension mechanism support, thereby being beneficial to the light weight of the whole vehicle, saving the installation space for the installation of other parts of the whole vehicle, ensuring that the assembly of the whole vehicle is simpler and more convenient, and facilitating the installation of other performance components/structures to improve the performance of the vehicle.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view of a portion of a front elevation structure of a tiltable suspension balancing mechanism;
FIG. 2 is a schematic front view of a damping assembly and swing arm assembly;
FIG. 3 is a schematic top view of a damping assembly and swing arm assembly;
FIG. 4 is a schematic view of the bottom view of the cushion assembly and swing arm assembly;
FIG. 5 is a schematic perspective view of a damping assembly and a swing arm assembly;
FIG. 6 is a schematic structural view of a swing arm assembly;
FIG. 7 is a schematic diagram of a connection structure of the buffer assembly and the left and right swing arms;
FIG. 8 is a schematic view of the connection of the tiltable suspension balancing mechanism to the vehicle frame;
FIG. 9 is a schematic illustration of a partial connection of a front hub, knuckle, steering support link and swing arm assembly.
List of parts and reference numerals:
1, a steering rod;
2 steering transmission links, 21 left steering transmission links, 22 right steering transmission links;
3 knuckle, 31 left knuckle, 32 right knuckle;
4 steering support links, 41 left steering support links, 42 right steering support links;
5, a buffer assembly, a 51 damper and a 52 damping spring;
61 left large swing arm, 611 left forearm, 612 left rear arm, 62 right large swing arm, 621 right forearm, 622 right rear arm, 63 left small swing arm, 64 right small swing arm, 65 reinforcing portion, 66 middle hinge portion, 67 bifurcation hinge portion;
71 first articulation, 711 left articulation, 712 right articulation, 72 first articulation, 73 second articulation, 74 third articulation, 75 hub articulation;
8 front wheel hub;
9 frames, 91 first connection portions, 92 second connection portions, 93 composite connection members.
Detailed Description
In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than as described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1 to 9, the present application provides a tiltable suspension balancing mechanism comprising a steering mechanism including a steering rod 1, a steering transmission link 2, a knuckle 3, and a steering support link 4; the steering rod 1 is connected with the steering knuckle 3 through the steering transmission connecting rod 2, and the steering knuckle 3 is connected with the front hub 8; the steering support link 4 is connected with the knuckle 3 and the steering support link 4 is arranged on the front side of the steering transmission link 2 in the extending direction of the vehicle body; the buffer assembly 5 comprises a damper 51 and a damping spring 52, the damping spring 52 is sleeved on the outer side of the damper 51, and the upper end of the damper 51 is connected with the steering mechanism; the swing arm assembly comprises a left large swing arm 61, a right large swing arm 62, a left small swing arm 63 and a right small swing arm 64; one end of the left large swing arm 61 adjacent to the right large swing arm 62 is hinged with the first hinge 71; one end of the left small swing arm 63, which is close to the left large swing arm 61, is hinged to the middle part of the left large swing arm 61 through a second hinge shaft 73, and one end of the right small swing arm 64, which is close to the right large swing arm 62, is hinged to the middle part of the right large swing arm 62 through a third hinge shaft 74; one end of the left small swing arm 63, which is close to the right small swing arm 64, is hinged through a first hinge shaft 72; the lower end of the damper 51 is provided with a first hinge shaft 72.
As a preferred embodiment of the present application, with continued reference to fig. 1, further comprising a hub hinge shaft 75, a knuckle 3 and a steering support link 4 hinged to the hub hinge shaft 75 and rotatable in a horizontal direction with respect to the hub hinge shaft 75, one ends of the left and right large swing arms 61 and 62 near the front hub 8 are rotatably connected to the steering support link 4, and the left and right large swing arms 61 and 62 are deflectable with respect to the steering support link 4 in a vertical plane.
In a specific example, referring to fig. 1-6 and 9, the steering drive link 2 includes a left steering drive link 21 and a right steering drive link 22, the steering support link 4 includes a left steering support link 41 and a right steering support link 42, and the knuckle 3 includes a left knuckle 31 and a right knuckle 32; the left steering transmission link 21 is connected with the left steering knuckle 31, and the right steering transmission link 22 is connected with the right steering knuckle 32 through universal joints;
The left knuckle 31 and the left steering support link 41 are connected to the hub axle 75, respectively; the left knuckle 31 and the left steering support link 41 are rotatable about the hub hinge shaft 75 in the horizontal direction, and the left large swing arm 61 is swingable up and down with respect to the left steering support link 41 in the vertical direction; the right knuckle 32 and the right steering support link 42 are connected to the hub axle 75, respectively; the right knuckle 32 and the right steering support link 42 are rotatable about the hub hinge shaft 75 in the horizontal direction, and the right large swing arm 62 is swingable up and down with respect to the right steering support link 42 in the vertical direction.
In the scheme, the tiltable suspension balance mechanism only adopts one group of buffer assemblies 5, and the large swing arms and the small swing arms in the swing arm assemblies are directly connected, so that compared with the existing tiltable suspension balance mechanism, the installation space occupied by the swing arm assemblies and the buffer assemblies 5 on the inner sides of wheels is reduced, and more sufficient steering space is provided for steering the wheels, so that the tiltable suspension balance mechanism is beneficial to improving the steering angle of the vehicle on narrow roads and complex road conditions to reduce the turning radius by increasing the steering angle of the wheels, and is convenient to realize turning and reversing on the narrow roads and the complex road conditions; compared with the existing front suspension mechanism of the inverted three-wheel/four-wheel motor vehicle or the electric vehicle, the structure has the advantages that the number of parts is smaller, the structure is simpler, the assembly and the disassembly are more convenient, and the overhaul and the maintenance are facilitated; and the weight of the whole front suspension mechanism is reduced, so that the steering load is reduced, the steering is lighter and more flexible, and better use experience is provided for a user. Meanwhile, in the above scheme, since the left large swing arm 61 and the right large swing arm 62 can deflect relative to the steering support link in the vertical plane, the vehicle body can incline a certain angle relative to the ground to realize the bending operation when steering and over-bending, so that the rolling risk can be reduced, the turning radius is reduced, and better driving experience and more driving fun are brought to the user while the vehicle steering performance is improved.
With continued reference to fig. 1-6, the left large swing arm 61 includes a left front arm 611 and a left rear arm 612, with a second hinge shaft 73 provided between the left front arm 611 and the left rear arm 612; the right large swing arm 62 includes a right front arm 621 and a right rear arm 622, and a third hinge shaft 74 is provided between the right front arm 621 and the right rear arm 622; the left steering support link 41 and the right steering support link 42 are connected by a ball joint connecting shaft.
In the scheme, the connecting structure among the steering transmission connecting rod 2, the steering support connecting rod 4, the knuckle 3 and the swing arm assembly is simple and clear and convenient to assemble, and the steering support connecting rod 4 is positioned on the upper side of the front hub 8 in the vertical direction and is retracted towards the steering rod 1 in the mechanism, so that the interference to the steering of the front hub 8 is further avoided. Meanwhile, in the scheme, the steering transmission connecting rod 2 and the steering support connecting rod 4 are arranged outside the steering range of the front hub 8, so that the sizes of the steering transmission connecting rod 2 and the steering support connecting rod 4 are increased on the premise of not interfering the steering of the front hub 8, and the large-amplitude steering of the front hub 8 is conveniently realized. Compared with the prior art that the steering transmission connecting rod 2 and the steering support connecting rod 4 are arranged between the two front hubs 8, the steering transmission connecting rod 2 and the steering support connecting rod 4 are prevented from being limited in telescopic size due to limited installation space between the front hubs 8, so that the steering amplitude of the two front hubs 8 is limited, and the front hubs 8 are also convenient to deflect relative to the swing arm assembly in the vertical direction so as to realize driving operations such as buckling.
As a preferred embodiment of the present application, referring to fig. 6, a reinforcing portion 65 is provided between the left front arm 611 and the left rear arm 612, and between the right front arm 621 and the right rear arm 622. The structural strength of the left and right large swing arms 61, 62 can be improved by the provision of the reinforcing portion 65, and the installation of the third hinge shaft 74 and the hub hinge shaft 75 is facilitated.
Further, referring to fig. 6 and 7, one of the left swing arm 63 and the right swing arm 64 has a middle hinge 66, and the other is provided with a bifurcated hinge 67; the middle hinge 66 is hinged to the middle of the first hinge shaft 72, and the bifurcated hinge 67 is hinged to both ends of the first hinge shaft 72. By adopting the structure, the installation space on the first hinge shaft 72 can be fully utilized, the utilization rate of the installation space is improved, and the occupation of the steering space on the inner side of the front hub 8 is reduced, so that the steering and inclined bending of the front hub 8 are more flexible and portable.
As a preferred embodiment of the present application, referring to fig. 3 and 4, the axes of the steering rod 1, the damper 51, and the first hinge shaft 72 are on one plane in the vertical direction, and the axes of the steering rod 1, the damper 51 are perpendicular to the axis of the first hinge shaft 72; the axes of the second and third hinge shafts 73 and 74 are parallel to the axis of the steering rod 1 and are located at equal distances between the left front arm 611 and the left rear arm 612, and between the right front arm 621 and the right rear arm 622. By adopting the structure, steering load can be reasonably distributed on the vertical direction on the horizontal direction, so that steering operation is more balanced, light and flexible, the whole vehicle has good control performance, and better use experience is brought to users.
Further, referring to fig. 2 to 5, the first hinge 71 includes a bracket, and a left hinge shaft 711 and a right hinge shaft 712 provided on the bracket, the left hinge shaft 711 is rotatably connected to the left large swing arm 61, and the right hinge shaft 712 is rotatably connected to the right large swing arm 62. By adopting the scheme, the left large swing arm 61 and the right large swing arm 62 are respectively and independently rotated relative to the first hinge piece 71, compared with the case that the left large swing arm 61 and the right large swing arm 62 are hinged on a single hinge shaft, the risk of mutual interference of the left large swing arm 61 and the right large swing arm 62 is avoided, and the left hinge shaft 711 and the right hinge shaft 712 respectively bear loads to avoid the risk of breakage caused by overlarge loads of the single hinge shaft.
Further, the present application also provides a tiltable suspension vehicle, which in one example, is shown with reference to fig. 8, which includes a frame 9, a rear wheel provided on the frame 9, and the tiltable suspension balancing mechanism described above. Specifically, as shown in fig. 1and 8, a first connecting portion 91 and a second connecting portion 92 are provided at the front portion of the frame 9, the first connecting portion 91 is connected to the first hinge 71, and the second connecting portion 92 is connected to the steering support link 4; the frame 9 is also provided with a composite connecting piece 93, the steering rod 1 is rotationally connected with the composite connecting piece 93, and the upper end of the damper 51 is fixedly connected with the lower end of the composite connecting piece 93. By adopting the scheme, the frame 9 is directly connected with the front suspension mechanism, and compared with the existing inverted three-wheel fuel/electric vehicle or four-wheel fuel/electric motorcycle, the arrangement of the front suspension mechanism bracket is reduced, so that the light weight of the whole vehicle is facilitated, meanwhile, the installation space is saved for the installation of other parts of the whole vehicle, the whole vehicle is simpler and more convenient to assemble, and other performance components/structures are convenient to install to improve the vehicle performance.
The technical solution protected by the present invention is not limited to the above embodiments, and it should be noted that, the combination of the technical solution of any one embodiment with the technical solution of the other embodiment or embodiments is within the scope of the present invention. While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.