Steering trunk mechanism

Abstract

The utility model belongs to the technical field of motorcycles, and particularly relates to a steering trunk mechanism, which is used for controlling the steering of a front wheel of a motorcycle, and comprises a main body, a yoke plate and a bushing, the connecting plate is provided with a damping mounting hole used for being connected with a damping mechanism of a front wheel, the damping mounting hole forms a damping center of the front wheel, the connecting plate is connected to the body through a connecting rod so that the connecting plate and the body can be detachably connected, the connecting rod is sleeved with the lining, and the two ends of the lining abut against the body and the connecting plate respectively. Therefore, the distance between the central shaft of the steering trunk mechanism and the damping center is changed by means of the change of the length of the bushing. The distance between the center shaft and the damping center of the steering main mechanism can be adjusted by replacing the bushings of different lengths, then the dragging distance of the motorcycle is adjusted, only the bushings need to be replaced in the dragging distance adjusting process, the research and development progress is accelerated, and cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of motorcycle technology, specifically relating to a steering backbone mechanism. Background Technology

[0002] In motorcycle development, actual riding tests are usually required to determine the optimal performance. For riding safety, trail distance is a key influencing parameter. Trail distance is the distance between the intersection of the vertical line from the front axle to the ground and the intersection of the steering axis and the ground. Specifically, trail distance is the distance between the intersection of the vertical line from the center point of the front axle to the ground and the intersection of the extended line of the steering axis (usually the three-star platform or steering trunk) and the ground. Currently, trail distance adjustments are mainly reflected in… Figure 1 and Figure 2 The adjustment of the 'steering trunk' of the shown part is achieved by adjusting... Figure 1 The distance L' (the distance between the steering trunk center axis and the damper center) is used to change the trailing distance. Therefore, during the development process, each adjustment of the trailing distance requires redrawing the 3D structure of the steering trunk and prototyping it, which seriously slows down the development progress. In order to reduce the number of prototypings, the trailing distance range is large each time, so the trailing distance parameter is difficult to obtain accurately. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing motorcycle development processes, such as the inconvenience of adjusting the trail distance, which leads to slow development progress, and to provide a steering backbone mechanism that facilitates the adjustment of the trail distance.

[0004] To achieve the above objectives, the technical solution of this utility model includes:

[0005] A steering trunk mechanism for controlling the steering of a motorcycle's front wheel includes a main body, a connecting plate, and a bushing. The main body is used to connect to the motorcycle handlebars, and its central axis forms the central axis of the steering trunk mechanism. The connecting plate has shock-absorbing mounting holes for connecting a shock-absorbing mechanism of the front wheel, and the shock-absorbing mounting holes form a shock-absorbing center of the front wheel. The connecting plate is connected to the main body via a connecting rod, making the connecting plate and the main body detachably connected. The bushing is fitted onto the connecting rod, and its two ends abut against the main body and the connecting plate, respectively, so that the distance between the central axis of the steering trunk mechanism and the shock-absorbing center varies by the change in the length of the bushing.

[0006] In one embodiment, the main body includes a trunk body and a triangular truncated pyramid, the triangular truncated pyramid being fixedly disposed at the end of the trunk body, one end of the bushing abutting against the triangular truncated pyramid, and the other end of the bushing abutting against the connecting plate.

[0007] In one embodiment, the connecting plate is half-frame-shaped, comprising two opposite shock-absorbing mounting portions, each of which is provided with a shock-absorbing mounting hole, and a connecting portion between the two shock-absorbing mounting portions, the triangular platform is arranged on the inner side of the half-frame-shaped connecting plate, the triangular platform is provided with a first connecting surface opposite to the connecting portion of the connecting plate, and the connecting rod is connected to the first connecting surface by penetrating the connecting hole of the connecting portion, so that the connecting plate and the main body are detachably connected.

[0008] In one embodiment, the triangular platform is provided with two second connecting surfaces distributed on the two sides of the first connecting surface, the second connecting surfaces are arranged opposite to the shock-absorbing mounting portions, and the second connecting surfaces abut against the inner side surfaces of the shock-absorbing mounting portions.

[0009] In one embodiment, the shock-absorbing mounting portion is provided with a split groove, one end of the split groove is communicated with the shock-absorbing mounting hole, and the other end is communicated with the outer side surface of the shock-absorbing mounting portion, the outer side surface of the shock-absorbing mounting portion is arranged opposite to the inner side surface of the shock-absorbing mounting portion, the two sides of the split groove are respectively formed with locking structures, and the shock-absorbing mounting holes are tightened or loosened by the locking structures to approach or move away from each other.

[0010] In one embodiment, the locking structures approach or move away from each other by screw connection.

[0011] In one embodiment, the connecting rod is a bolt, the first connecting surface of the triangular platform is provided with a lock hole, the connecting hole of the connecting portion is a through hole, and the connecting rod is connected with a nut by penetrating the connecting hole and the lock hole in sequence, so that the connecting plate and the triangular platform are detachably connected.

[0012] In one embodiment, the connecting portion is provided with four connecting holes, and the connecting rod is four, each of the connecting rods is sleeved with a bushing.

[0013] The utility model discloses a split type structure formed by splitting the traditional integrated steering main mechanism into a main body, a connecting plate and a bushing, detachable connection between the main body and the connecting plate, adjusting the distance between the central shaft of the steering main mechanism and the shock-absorbing center by replacing the bushing of different lengths, and then adjusting the trailing distance of the motorcycle, only replacing the bushing is needed in the process of adjusting the trailing distance, without repeatedly drawing the 3D structure of the steering main and sampling, thereby speeding up the research and development progress and reducing the research and development cost. In addition, the length of the bushing can be designed smaller, which is beneficial to accurately adjusting the trailing distance, so that the motorcycle obtains the best trailing distance. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1is a side view of the existing steering trunk.

[0015] Figure 2 is a perspective view of the existing steering trunk.

[0016] Figure 3 is a use state diagram of an embodiment of the present utility model.

[0017] Figure 4 is a connection structure diagram of an embodiment of the present utility model.

[0018] Figure 5 is a perspective view of an embodiment of the present utility model.

[0019] Figure 6 is an exploded view of an embodiment of the present utility model.

[0020] Figure 7 is a main body perspective view of an embodiment of the present utility model.

[0021] Figure 8 is a connecting plate perspective view of an embodiment of the present utility model.

[0022] Explanation of reference numerals in the drawings:

[0023] 1 main body, 11 trunk body, 12 triangular table, 121 first connecting surface, 122 second connecting surface, 123 lock hole, 2 connecting plate, 21 shock absorbing mounting hole, 22 shock absorbing mounting part, 221 split groove, 222 locking structure, 23 connecting part, 231 connecting hole, 3 bushing, 4 connecting rod

[0024] 100 handle, 200 shock absorbing mechanism, 300 frame DETAILED DESCRIPTION

[0025] To further illustrate the embodiments, the present utility model provides drawings. These drawings are part of the disclosure of the present utility model, which mainly serves to illustrate the embodiments, and can be combined with the relevant description of the specification to explain the operating principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible embodiments and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] Reference is made to Figures 3 to 5As shown, the utility model discloses a steering main stem mechanism, this steering main stem mechanism sets up at the front wheel of motorcycle for controlling the steering of motorcycle front wheel, this steering main stem mechanism includes main body 1, connecting plate 2 and bushing 3, main body 1 is used for connecting motorcycle handle 100 and the center shaft is formed as the center axis X1 of this steering main stem mechanism, connecting plate 2 is equipped with shock absorbing mounting hole 21 for connecting the shock absorbing mechanism 200 of front wheel, and shock absorbing mounting hole 21 forms a shock absorbing center X2 of front wheel, and connecting plate 2 is connected to main body 1 through a connecting rod 4 so that connecting plate 2 and main body 1 form detachable connection, and bushing 3 is sleeved on connecting rod 4 and the both ends thereof abut on main body 1 and connecting plate 2 respectively, so that the distance L between the center axis X1 of steering main stem mechanism and shock absorbing center X2 changes by means of the change of the length of bushing 3. Main body 1 is also connected to the frame 300 and forms the connection of relative rotation with the frame 300, when the motorcycle driver rotates handle 100, the steering main stem mechanism swings around the center axis X1, so as to drive the shock absorbing mechanism 200 connected with connecting plate 2 to swing, and then drive the front wheel to steer.

[0027] The utility model discloses a steering main stem mechanism, this steering main stem mechanism sets up at the front wheel of motorcycle for controlling the steering of motorcycle front wheel, this steering main stem mechanism includes main body 1, connecting plate 2 and bushing 3, main body 1 is used for connecting motorcycle handle 100 and the center shaft is formed as the center axis X1 of this steering main stem mechanism, connecting plate 2 is equipped with shock absorbing mounting hole 21 for connecting the shock absorbing mechanism 200 of front wheel, and shock absorbing mounting hole 21 forms a shock absorbing center X2 of front wheel, and connecting plate 2 is connected to main body 1 through a connecting rod 4 so that connecting plate 2 and main body 1 form detachable connection, and bushing 3 is sleeved on connecting rod 4 and the both ends thereof abut on main body 1 and connecting plate 2 respectively, so that the distance L between the center axis X1 of steering main stem mechanism and shock absorbing center X2 changes by means of the change of the length of bushing 3. Main body 1 is also connected to the frame 300 and forms the connection of relative rotation with the frame 300, when the motorcycle driver rotates handle 100, the steering main stem mechanism swings around the center axis X1, so as to drive the shock absorbing mechanism 200 connected with connecting plate 2 to swing, and then drive the front wheel to steer. Figure 1 and Figure 2 The utility model discloses a steering main stem mechanism, this steering main stem mechanism sets up at the front wheel of motorcycle for controlling the steering of motorcycle front wheel, this steering main stem mechanism includes main body 1, connecting plate 2 and bushing 3, main body 1 is used for connecting motorcycle handle 100 and the center shaft is formed as the center axis X1 of this steering main stem mechanism, connecting plate 2 is equipped with shock absorbing mounting hole 21 for connecting the shock absorbing mechanism 200 of front wheel, and shock absorbing mounting hole 21 forms a shock absorbing center X2 of front wheel, and connecting plate 2 is connected to main body 1 through a connecting rod 4 so that connecting plate 2 and main body 1 form detachable connection, and bushing 3 is sleeved on connecting rod 4 and the both ends thereof abut on main body 1 and connecting plate 2 respectively, so that the distance L between the center axis X1 of steering main stem mechanism and shock absorbing center X2 changes by means of the change of the length of bushing 3. Main body 1 is also connected to the frame 300 and forms the connection of relative rotation with the frame 300, when the motorcycle driver rotates handle 100, the steering main stem mechanism swings around the center axis X1, so as to drive the shock absorbing mechanism 200 connected with connecting plate 2 to swing, and then drive the front wheel to steer. Figure 5 and

[0028] As shown in Figure 3 、 Figures 5 to 8 , main body 1 includes main stem body 11 and triangular platform 12, and the triangular platform 12 is fixedly arranged at the end of the main stem body 11, one end of the bushing 3 abuts against the triangular platform 12, and the other end of the bushing 3 abuts against the connecting plate 2. When it is necessary to adjust the trail, the connecting rod 4 and the bushing 3 are detached, another bushing 3 with a different length is sleeved on the connecting rod 3, and the connecting rod 3 connects and fixes the main body 1 and the connecting plate 2, so that the distance L between the center axis X1 of the steering main stem mechanism and the shock absorbing center X2 is changed, and then the trail T of the motorcycle is adjusted. The end of the main stem body 11 away from the triangular platform 12 is connected to the handle 100, and the main stem body 11 is sleeved on the frame 300.

[0029] The connecting plate 2 is a half frame shape, comprising two opposite shock-absorbing mounting portions 22, each of which is provided with a shock-absorbing mounting hole 21, and a connecting portion 23 between the two shock-absorbing mounting portions 22, the triangular platform 12 is arranged on the inner side of the half frame shape connecting plate 2, the triangular platform 12 is provided with a first connecting surface 121 opposite to the connecting portion 23 of the connecting plate 2 and two second connecting surfaces 122 distributed on both sides of the first connecting surface 121, the connecting rod 4 is connected to the lock hole 123 on the first connecting surface 121 by being arranged in the connecting hole 231 of the connecting portion 23, so that the connecting plate 2 and the main body 1 are detachably connected. The connecting portion 23 is provided with four connecting holes 231, and the connecting rod 4 is four connecting rods, each of which is sleeved with a bushing 3, and the four connecting rods 4 are distributed in a rectangular shape, so that the connecting points between the connecting plate 2 and the triangular platform 12 are more and dispersed, which is beneficial to the stable connection between the two. The connecting rod 4 of the embodiment is a bolt, the connecting hole 231 of the connecting portion 23 is a through hole, and the connecting rod 4 is connected with a nut (not shown in the figure) by sequentially penetrating the connecting hole 231 and the lock hole 123, so that the connecting plate 2 and the triangular platform 12 are detachably connected. In other embodiments, the connecting rod 4 can also be a pin.

[0030] The second connecting surface 122 is arranged opposite to the shock-absorbing mounting portion 22, and the inner side surface of the second connecting surface 122 abuts against the shock-absorbing mounting portion 22, so that the connection between the triangular platform 12 and the connecting plate 2 is more stable, and the steering accuracy of the motorcycle is improved. In addition, the contact between the two second connecting surfaces of the triangular platform 12 and the inner side surface of the shock-absorbing mounting portion 22 of the connecting plate 2 can increase the lateral stiffness of the steering main mechanism assembly.

[0031] The shock-absorbing mounting portion 22 is provided with a split groove 221, one end of the split groove 221 is communicated with the shock-absorbing mounting hole 21, and the other end is communicated to the outer side surface of the shock-absorbing mounting portion 22, the outer side surface of the shock-absorbing mounting portion 22 is arranged opposite to the inner side surface of the shock-absorbing mounting portion 22, and the two sides of the split groove 221 form locking structures 222 respectively, and the shock-absorbing mechanism 200 arranged in the shock-absorbing mounting hole 21 is tightened or loosened by the locking structures 222. In the embodiment, the locking structures 222 are connected by bolts to approach or move away from each other, and in other embodiments, the approach or movement away from each other can also be achieved by pin connection or clamping, so as to tighten or loosen the shock-absorbing mechanism 200.

[0032] In addition to facilitating the adjustment of the trailing distance of the motorcycle, the connecting plate 2 and the shock-absorbing front wheel form a small assembly, the main body 1 of the steering main mechanism and the frame 300 form a small assembly, different small assembly patterns can be used for rapid assembly of motorcycles with different parameters, so that the steering main mechanism of the utility model can adapt to more vehicle models, and the sample making and time cost are further reduced.

[0033] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that the remaining unexplained parts are prior art, and various changes made to the utility model in form and details without departing from the spirit and scope of the utility model defined by the appended claims all fall within the protection scope of the utility model.

Claims

1. A steering main mechanism for controlling steering of a front wheel of a motorcycle, characterized by: The application relates to a steering stem mechanism of a motorcycle, which comprises a main body, a connecting plate and a bushing, the main body is used for connecting a handle of the motorcycle and a center shaft of the main body is formed as a center shaft of the steering stem mechanism, the connecting plate is provided with shock absorbing mounting holes used for connecting a shock absorbing mechanism of a front wheel, the shock absorbing mounting holes form a shock absorbing center of the front wheel, the connecting plate is connected to the main body through a connecting rod so that the connecting plate and the main body form detachable connection, and the bushing is sleeved on the connecting rod and the two ends of the bushing abut against the main body and the connecting plate respectively, so that the distance between the center shaft of the steering stem mechanism and the shock absorbing center is changed by changing the length of the bushing.

2. A steering column assembly according to claim 1, wherein: The main body comprises a stem body and a triangular platform, the triangular platform is fixedly arranged at the end of the stem body, one end of the bushing abuts against the triangular platform, and the other end of the bushing abuts against the connecting plate.

3. A steering column assembly according to claim 2, wherein: The connecting plate is half-frame-shaped and comprises two oppositely arranged shock absorbing mounting portions, each of the shock absorbing mounting portions is provided with a shock absorbing mounting hole, a connecting portion is arranged between the two shock absorbing mounting portions, the triangular platform is arranged at the inner side of the half-frame-shaped connecting plate, the triangular platform is provided with a first connecting surface opposite to the connecting portion of the connecting plate, and the connecting rod is connected to the first connecting surface by penetrating the connecting hole of the connecting portion, so that the connecting plate and the main body form detachable connection.

4. A steering column assembly according to claim 3, wherein: The triangular platform is provided with two second connecting surfaces, the two second connecting surfaces are distributed on the two sides of the first connecting surface, the second connecting surfaces are oppositely arranged with the shock absorbing mounting portions, and the second connecting surfaces abut against the inner side surfaces of the shock absorbing mounting portions.

5. A steering column assembly according to claim 4, wherein: The shock absorbing mounting portion is provided with a split groove, one end of the split groove is communicated with the shock absorbing mounting hole, and the other end of the split groove is communicated with the outer side surface of the shock absorbing mounting portion, the outer side surface of the shock absorbing mounting portion is oppositely arranged with the inner side surface of the shock absorbing mounting portion, the two sides of the split groove form locking structures respectively, and the shock absorbing mounting holes are tightened or loosened by the shock absorbing mechanisms penetrating in the shock absorbing mounting holes through the locking structures moving close to or away from each other.

6. A steering column assembly according to claim 5, wherein: The locking structures are connected through bolts to move close to or away from each other.

7. A steering column assembly according to claim 3, wherein: The connecting rod is a bolt, the first connecting surface of the triangular platform is provided with a lock hole, the connecting hole of the connecting portion is a through hole, and the connecting rod is connected with a nut by penetrating the connecting hole and the lock hole in sequence, so that the connecting plate and the triangular platform form detachable connection.

8. A steering column assembly according to claim 3, wherein: The connecting portion is provided with four connecting holes, and the connecting rod is four connecting rods, each of the connecting rods is sleeved with a bushing.

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