Motorcycle windshield structure

Abstract

The utility model relates to the technical field of motorcycle auto parts, in particular to a motorcycle windshield structure which comprises a connecting frame and at least one self-locking driving mechanism rotationally connected with the connecting frame, first connecting rods are rotationally connected to the two sides of the upper portion of the connecting frame, and second connecting rods are rotationally connected to the two sides of the lower portion of the connecting frame. The first connecting rod and the second connecting rod are rotationally connected with a moving frame and are arranged in parallel; the self-locking driving mechanism comprises a motor and a speed reducing mechanism rotationally connected with the motor, a driving shaft is fixedly arranged at the output end of the speed reducing mechanism, and through cooperation of the motor and the speed reducing mechanism, a first connecting rod on the single side of the motorcycle windshield structure is driven. The first connecting rod drives the other first connecting rod and the second connecting rod to achieve linkage, then the movable frame is driven to conduct height adjustment, and distortion of the connecting rods or gear damage caused by distortion of the connecting shaft and the driving shaft and uneven stress of the connecting rods are avoided.

Description

A motorcycle windshield structure Technical Field

[0001] This utility model relates to the field of motorcycle and automobile parts technology, specifically to a motorcycle windshield structure. Background Technology

[0002] With social development and the improvement of people's living standards, motorcycles have become a widely used means of transportation. However, different users generally have different performance requirements for motorcycles. In existing motorcycles, a windshield is usually installed on the front to block the wind and guide airflow. In order to accommodate the different heights and driving habits of riders, some motorcycle models have height-adjustable windshields to ensure the comfort and safety of the rider. However, in the current technology, some height-adjustable windshields require the use of auxiliary tools for adjustment and require the motorcycle to be taken to a special place for adjustment, making windshield adjustment inconvenient. At the same time, some windshields use the power of an electric motor to achieve height adjustment. The motor drives multiple linkages to adjust the height, which is a relatively complex driving method. Moreover, the installation and disassembly process is complicated and economical. Some use a robotic arm to adjust the windshield height, but the structure is complex and the fixed strength after adjustment is not high. It is easy to vibrate and make noise during riding, which is not conducive to the riding experience.

[0003] For example, the windshield assembly and its motorcycle with announcement number CN208216889U mainly include a windshield assembly comprising a windshield body and a locking component. The windshield body slides with the motorcycle body with a single degree of freedom, and the height of the windshield body can be adjusted by sliding. The locking component is used to lock and fix the windshield body to the motorcycle body. The single-degree-of-freedom sliding engagement between the windshield body and the motorcycle body, and the locking component, helps to reduce the degree of freedom of movement of the windshield body, prevents the windshield body from shaking after the locking component is locked, avoids easy vibration and noise during riding, and facilitates convenient height adjustment of the windshield body, which can be completed by one person with both hands. The fixed strength of the windshield body after adjustment is high and the reliability is high. The two guide rails set on the left and right help to prevent the windshield body from flipping laterally, ensuring that the guide rails will not easily jam due to the windshield body flipping during adjustment, ensuring smooth adjustment and improving adjustment efficiency.

[0004] However, the locking components in the aforementioned prior art achieve locking by cooperating with the windshield body, but all of them adjust the height of the windshield structure by controlling multiple connecting structures. The adjustment method is complicated and cannot avoid the situation where the connecting shaft is twisted under external force and the connecting rod is twisted and deformed due to uneven force on the connecting rod. Summary of the Invention

[0005] To address the aforementioned issues, a motorcycle windshield structure is provided. Through the cooperation of a motor and a reduction mechanism, the first link on one side of the motorcycle windshield structure is driven, enabling the first link to drive another first link and a second link to achieve linkage, thereby driving the moving frame to adjust its height. This avoids the torsion of the connecting shaft and drive shaft, as well as the uneven force on the connecting rods, which could lead to link torsion deformation or gear damage.

[0006] To address the problems of existing technologies, this utility model provides a motorcycle windshield structure, including a connecting frame and at least one self-locking drive mechanism rotatably connected to the connecting frame. The connecting frame has first connecting rods rotatably connected to its upper two sides and second connecting rods rotatably connected to its lower two sides. Both the first and second connecting rods are rotatably connected to a movable frame, and the projection of the closed line connecting the first and second connecting rods to the connecting frame and the movable frame forms a quadrilateral. The self-locking drive mechanism includes a motor and a reduction mechanism rotatably connected to the motor. A drive shaft is fixedly mounted at the output end of the reduction mechanism. The reduction mechanism includes a reduction gear base connected to the motor and a reduction gear cover. A worm gear is disposed inside the reduction gear base and connected to the drive shaft. The worm gear meshes with a worm, with one end of the worm gear meshing with the worm gear having a threaded structure and the other end away from the threaded structure having a gear structure. The motor has an output shaft that passes through the reduction gear base and meshes with the gear structure of the worm. The self-locking drive mechanism also includes a self-tightening mechanism and a limiting mechanism disposed at the upper end of the reduction mechanism.

[0007] Preferably, the drive shaft is a variable cross-section cylindrical shaft, the drive shaft includes a first column disposed near the end of the reduction mechanism, a second column disposed at the end of the first column away from the reduction mechanism, and a third column disposed at the end of the second column away from the first column.

[0008] Preferably, a limit plate is provided on the drive shaft.

[0009] Preferably, the self-tightening mechanism includes a moving disc disposed on the upper part of the limiting disc, and a self-tightening clutch matched with the moving disc; the moving disc has a plurality of wedge-shaped protrusions equidistantly arranged in the circumferential direction on the side facing the self-tightening clutch; the self-tightening clutch has a groove formed on the side facing the moving disc that engages with the wedge-shaped protrusions.

[0010] Preferably, both the self-tightening clutch and the moving disc are mounted on the second column of the drive shaft.

[0011] Preferably, the limiting mechanism includes a self-tightening ring sleeved on the drive shaft, the self-tightening ring having a cavity inside, and a retaining ring embedded inside the cavity.

[0012] Preferably, the self-tightening ring is sleeved on the third column of the drive shaft, and an elastic element is provided at the lower part of the self-tightening ring. One end of the elastic element abuts against the limiting mechanism, and the other end abuts against the self-tightening clutch. The elastic element generates axial extrusion force on the self-tightening clutch, and in conjunction with the wedge-shaped protrusion and groove, provides axial deflection force for the moving disc.

[0013] Preferably, one end of the retaining ring is provided with an open structure, the retaining ring is engaged at the third column on the drive shaft and nested inside the self-tightening ring; a limit block is provided on the upper part of the retaining ring.

[0014] Preferably, a fixing member is fixedly provided between the two sides of the bottom of the connecting frame.

[0015] The advantages of this utility model compared to the prior art are:

[0016] 1. By cooperating with the self-tightening clutch and the moving plate, the two are misaligned and deflected. Therefore, the self-tightening clutch and the moving plate are locked on the drive shaft and there will be no shaking caused by the gap in the sleeve. This solves the problem of the linkage of the motorcycle windshield structure shaking due to the play.

[0017] 2. The drive shaft is set as a variable cross-section cylindrical shaft, which not only has the transmission function, but also provides a mounting position, greatly reducing the installation difficulty. An elastic element is set between the self-tightening clutch and the self-tightening ring. Under the elastic force of the elastic element, each component can always be fixed in the moving position, thus eliminating the shaking caused by mechanical clearance and wear clearance.

[0018] 3. By cooperating with the motor and the reduction mechanism, the first link on one side of the motorcycle windshield structure is driven, so that the first link drives the other first link and the second link to achieve linkage, thereby driving the moving frame to adjust the height. This avoids the twisting of the connecting shaft and drive shaft, uneven force on the link, and the resulting twisting deformation of the link or damage to the gear.

[0019] 4. The limit plate is set on the main body of the motorcycle windshield bracket, providing a range of rotation angles. The highest and lowest positions of the windshield can be adjusted. Overload protection is set by externally detecting the motor current. This reduces the number of limit switches and wiring, reduces the number of parts, and lowers the failure rate. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural diagram of a motorcycle windshield.

[0021] Figure 2 is a three-dimensional structural diagram of a motorcycle windshield.

[0022] Figure 3 is a three-dimensional structural diagram of a portion of a motorcycle windshield structure.

[0023] Figure 4 is a three-dimensional structural diagram of a portion of a motorcycle windshield;

[0024] Figure 5 is a three-dimensional structural diagram of a portion of a motorcycle windshield;

[0025] Figure 6 is an exploded three-dimensional structural diagram of a portion of a motorcycle windshield.

[0026] Figure 7 is a three-dimensional structural diagram of a motorcycle windshield.

[0027] The following are the labels in the diagram: 1. Mounting cover; 2. Self-tightening clutch; 3. Moving disc; 4. Limiting disc; 5. Reduction mechanism; 51. Worm gear; 52. Worm; 6. Motor; 61. Motor output shaft; 7. Drive shaft; 71. Limiting block; 8. Limiting mechanism; 81. Snap ring; 82. Self-tightening ring; 83. Elastic element; 9. Connecting frame; 10. First connecting rod; 11. Second connecting rod; 12. Moving frame; 13. Fixing element. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0029] Referring to Figures 1 to 7, a motorcycle windshield structure includes a connecting frame 9 and at least one self-locking drive mechanism rotatably connected to the connecting frame 9. The connecting frame 9 has first connecting rods 10 rotatably connected to its upper two sides and second connecting rods 11 rotatably connected to its lower two sides. Both the first connecting rods 10 and the second connecting rods 11 are rotatably connected to a movable frame 12, and the closed-loop connection line between the first connecting rods 10, the second connecting rods 11, the connecting frame 9, and the movable frame 12 forms a quadrilateral shape. The self-locking drive mechanism includes a motor 6 and a reduction mechanism 5 rotatably connected to the motor 6. The output end of the reduction mechanism 5... A drive shaft 7 is fixedly installed; the reduction mechanism 5 includes a reducer base connected to the motor 6 and a reducer cover. A worm gear 51 is installed inside the reducer base. The worm gear 51 is connected to the drive shaft 7. The worm gear 51 meshes with a worm 52. One end of the worm gear 52 that meshes with the worm gear 51 has a threaded structure, and the other end away from the threaded structure has a gear structure. The motor 6 is provided with a motor output shaft 61. The motor output shaft 61 passes through the reducer base and meshes with the gear structure of the worm 52. The self-locking drive mechanism also includes a self-tightening mechanism and a limiting mechanism 8 installed on the upper end of the reduction mechanism 5.

[0030] Through the cooperation of motor 6 and reduction mechanism 5, the first link 10 on one side of the motorcycle windshield structure is driven, so that the first link 10 drives the other first link 10 and second link 11 to achieve linkage, thereby driving the moving frame 12 to adjust the height. This avoids the first link 10, second link 11, and drive shaft 7 from twisting, or the first link 10 and second link 11 from uneven force, which would cause the first link 10 and second link 11 to twist and deform or the gears to be damaged.

[0031] The connection structure between the worm gear 51 and the worm 52 can buffer and reduce the rotational force output by the motor 6, preventing the transmission of the motor 6 from directly acting on the drive shaft 7, which could easily damage the drive shaft 7 or the gears.

[0032] Specifically, the drive shaft 7 is a variable cross-section cylindrical shaft. The drive shaft 7 includes a first column disposed near the end of the reduction mechanism 5, a second column disposed at the end of the first column away from the reduction mechanism 5, a third column disposed at the end of the second column away from the first column, and a mounting cover 1 disposed on the upper part of the drive shaft 7.

[0033] It should be added that the drive shaft 7 is a variable cross-section cylindrical shaft. The first, second, and third columns mentioned above can be set according to specific needs, as long as they are sufficient to achieve the function of this solution. At the same time, other mechanisms are set accordingly. This solution does not impose specific limitations. In this solution, it is preferred that the first and third columns be cylindrical, with the diameter of the first column being slightly larger than the diameter of the third column, and the second column be set as a square column.

[0034] The drive shaft 7 is set as a variable cross-section cylindrical shaft, which not only has a transmission function, but also provides a mounting position, greatly reducing the installation difficulty. An elastic element 83 is set between the self-tightening clutch 2 and the self-tightening ring 82. Under the elastic force of the elastic element 83, each component can be fixed in the mounting position, thus eliminating the shaking caused by mechanical clearance and wear clearance.

[0035] In this scheme, the connecting frame 9 is rotatably connected to at least one self-locking drive mechanism. Alternatively, two, but not limited to two, self-locking drive mechanisms can be connected as needed. In this scheme, it is preferred to connect one self-locking drive mechanism.

[0036] Specifically, a limiting disk 4 is provided on the drive shaft 7, and mounting holes are provided on both sides of the limiting disk 4.

[0037] The self-locking drive structure can be easily installed and disassembled by providing mounting holes in the limit plate 4.

[0038] Specifically, the self-tightening mechanism includes a moving disc 3 disposed on the upper part of the limiting disc 4, and a self-tightening clutch 2 matched with the moving disc 3; the moving disc 3 has a plurality of wedge-shaped protrusions equidistantly arranged in the circumferential direction on the side facing the self-tightening clutch 2; the self-tightening clutch 2 has a groove formed on the side facing the moving disc 3 that engages with the wedge-shaped protrusions.

[0039] Specifically, the self-tightening clutch 2 and the moving disc 3 are both sleeved on the second column of the drive shaft 7, and the moving disc 3 has mounting holes on both sides.

[0040] In this design, by preferably setting the second column as a square column, square holes are correspondingly opened inside the self-tightening clutch 2 and the moving disc 3. At this time, the elastic force of the elastic element 83 causes the self-tightening clutch 2 and the moving disc 3 to be misaligned relative to the drive shaft 7, thereby further engaging the self-tightening clutch 2 and the moving disc 3. At the same time, the self-tightening clutch 2 and the moving disc 3 are misaligned and fixed to the drive shaft 7, improving their firmness and stability and avoiding the shaking problem of misaligned installation.

[0041] It should be added that an elastic element 83 is provided between the self-tightening clutch 2 and the self-tightening ring 82. The elastic force of the elastic element 83 squeezes the self-tightening clutch 2, causing it to be misaligned and deflected with the moving disc 3, so that the self-tightening clutch 2 and the moving disc 3 are further engaged and fixed on the drive shaft 7, while eliminating the mechanical clearance or wear clearance between the moving disc 3 and the drive shaft 7.

[0042] By cooperating with the self-tightening clutch 2 and the moving disc 3, the two are misaligned and deflected. Therefore, the self-tightening clutch 2 and the moving disc 3 are locked on the drive shaft 7 and there will be no shaking caused by the gap in the sleeve. This solves the problem of the linkage of the motorcycle windshield structure shaking due to the play.

[0043] Specifically, the limiting mechanism 8 includes a self-tightening ring 82 sleeved on the drive shaft 7, the self-tightening ring 82 having a cavity inside, and a retaining ring 81 embedded inside the cavity.

[0044] Specifically, the self-tightening ring 82 is sleeved on the third column of the drive shaft 7. The lower part of the self-tightening ring 82 is provided with a circular protrusion, and the lower part of the circular protrusion is provided with an elastic element 83. One end of the elastic element 83 abuts against the limiting mechanism 8, and the other end abuts against the self-tightening clutch 2. The elastic element 83 generates an axial compressive force on the self-tightening clutch 2, which, together with the wedge-shaped protrusion and groove, provides an axial deflection force for the moving disc 3.

[0045] It should be added that when the limiting mechanism 8 is tightened, the presence of the elastic element 83 causes it to generate axial compressive force on the self-tightening clutch 2. At the same time, in conjunction with the wedge-shaped protrusion and groove, it partially deflects on the drive shaft 7 of the variable cross-section cylindrical shaft. Since the self-tightening clutch 2 is sleeved on the drive shaft 7 but there is a certain gap between the two, the self-tightening clutch 2 partially deflects on the drive shaft 7, thereby generating axial deflection force. At this time, the moving disc 3 is pressed to prevent the problem of shaking caused by the gap in the sleeve, thereby solving the problem of shaking caused by play.

[0046] The self-tightening ring 82 has a circular protrusion at the bottom, which can fix and limit the elastic element 83, further locking the elastic element 83, so that the elastic element 83 presses down on the self-tightening clutch 2 to engage with the moving disc 3, further improving stability.

[0047] Specifically, the retaining ring 81 has an open structure at one end, and the retaining ring 81 is engaged at the third column on the drive shaft 7 and nested inside the self-tightening ring 82; a limit block 71 is provided on the upper part of the retaining ring 81.

[0048] By setting the retaining ring 81 to be open at one end, quick disassembly can be achieved. At the same time, the retaining ring 81 is embedded inside the self-tightening ring 82, which can improve the fixing and limiting effect and prevent the retaining ring 81 from falling off under external force, thus affecting the use effect of the self-locking drive structure.

[0049] The limit block 71 can further limit the limit mechanism 8 and prevent the retaining ring 81 from disengaging.

[0050] It should be added that the motor 6 is provided with a motor housing. The motor housing provides protection for the motor 6 and prevents it from being damaged.

[0051] Specifically, fasteners 13 are fixedly installed on both sides of the bottom of the connecting frame 9.

[0052] The stability of the connecting frame 9 is improved by fixing the fastener 13.

[0053] The working principle of this application is as follows: In use, the self-locking drive structure can be installed on the windshield structure of the motorcycle and connected to one of the linkages of the windshield structure. At this time, the drive motor 6 can realize the linkage adjustment of the windshield structure, thereby realizing the height adjustment of the windshield structure. When installing the self-locking drive structure, an elastic element 83 is set between the self-locking clutch 2 and the self-locking ring 82. The elastic force of the elastic element 83 squeezes the self-locking clutch 2, causing it to be misaligned and deflected with the moving disc 3. This further locks and fixes the self-locking clutch 2 and the moving disc 3 onto the drive shaft 7, while eliminating the mechanical clearance or wear clearance between the moving disc 3 and the drive shaft 7. Therefore, the problem of shaking due to installation misalignment is eliminated.

[0054] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A motorcycle windshield structure, comprising a connecting frame (9) and at least one self-locking drive mechanism rotatably connected to the connecting frame (9), characterized in that, The upper two sides of the connecting frame (9) are rotatably connected to the first connecting rod (10), and the lower two sides are rotatably connected to the second connecting rod (11). The first connecting rod (10) and the second connecting rod (11) are both rotatably connected to the moving frame (12), and the projection of the closed line connecting the first connecting rod (10), the second connecting rod (11), the connecting frame (9), and the moving frame (12) forms a quadrilateral. The self-locking drive mechanism includes a motor (6) and a reduction mechanism (5) rotatably connected to the motor (6). The output end of the reduction mechanism (5) is fixedly provided with a drive shaft (7). The reduction mechanism (5) includes a drive shaft (7) connected to the motor. (6) A reducer base and a reducer cover are connected. A worm wheel (51) is provided inside the reducer base. The worm wheel (51) is connected to the drive shaft (7). The worm wheel (51) meshes with a worm (52). One end of the worm (52) meshing with the worm wheel (51) is a threaded structure, and the other end away from the threaded structure is a gear structure. The motor (6) is provided with a motor output shaft (61). The motor output shaft (61) passes through the reducer base and meshes with the gear structure of the worm (52). The self-locking drive mechanism also includes a self-tightening mechanism and a limiting mechanism (8) provided on the upper end of the reducer mechanism (5).

2. A windscreen structure for a motorcycle as defined in claim 1, characterized in that The drive shaft (7) is a variable cross-section cylindrical shaft. The drive shaft (7) includes a first column disposed near the end of the deceleration mechanism (5), a second column disposed at the end of the first column away from the deceleration mechanism (5), and a third column disposed at the end of the second column away from the first column.

3. A motorcycle windshield structure according to claim 2, characterized in that, A limit plate (4) is provided on the drive shaft (7).

4. A windscreen structure for a motorcycle as defined in claim 3, characterized in that The self-tightening mechanism includes a moving disc (3) disposed on the upper part of the limiting disc (4) and a self-tightening clutch (2) matched with the moving disc (3); the moving disc (3) has a plurality of wedge-shaped protrusions equidistantly arranged in the circumferential direction on the side facing the self-tightening clutch (2); the self-tightening clutch (2) has a groove formed on the side facing the moving disc (3) that engages with the wedge-shaped protrusions.

5. A windscreen structure for a motorcycle as defined in claim 4, characterized in that The self-tightening clutch (2) and the moving disc (3) are both mounted on the second column of the drive shaft (7).

6. A windscreen structure for a motorcycle as defined in claim 4, wherein The limiting mechanism (8) includes a self-tightening ring (82) sleeved on the drive shaft (7), the self-tightening ring (82) has a cavity inside, and a retaining ring (81) is embedded inside the cavity.

7. A motorcycle windscreen structure according to claim 6, wherein The self-tightening ring (82) is sleeved on the third column of the drive shaft (7). An elastic element (83) is provided at the lower part of the self-tightening ring (82). One end of the elastic element (83) abuts against the limiting mechanism (8) and the other end abuts against the self-tightening clutch (2). The elastic element (83) generates axial extrusion force on the self-tightening clutch (2), and in conjunction with the wedge-shaped protrusion and groove, provides axial deflection force for the moving disc (3).

8. A motorcycle windshield structure according to claim 7, characterized in that, The retaining ring (81) has an open structure at one end. The retaining ring (81) is engaged at the third column on the drive shaft (7) and nested inside the self-tightening ring (82). A limit block (71) is provided on the upper part of the retaining ring (81).

9. A windscreen structure for a motorcycle as defined in claim 1, wherein A fastener (13) is fixedly installed between the two bottom sides of the connecting frame (9).

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