Adjustable middle axle frame for motor tricycle

Abstract

The utility model discloses an adjustable centre shaft frame for a motor tricycle, which relates to the technical field of frames and comprises a frame structure, the frame structure comprises a support frame and a seat cushion support, the seat cushion support is fixedly mounted on the support frame, a fixing structure is arranged on the seat cushion support and comprises a bottom plate, and the bottom plate is fixedly mounted on the seat cushion support. A lifting structure and a supporting structure are arranged at the top end of the bottom plate, the supporting structure comprises a seat plate, and an adjusting structure is arranged on the seat plate. The seat plate is controlled to ascend or descend through the lifting structure, flexible seat height adjustment is provided, the requirements of drivers of different heights are met, the drivers are allowed to adjust the seat height according to personal preference and physical conditions, riding fatigue is reduced, the gear is driven by the rack to rotate, and therefore the angle of the backup plate is adjusted, and riding comfort is improved. A user can finely adjust the angle of the backup plate to find the most comfortable supporting angle, back fatigue and discomfort caused by long-time riding are reduced, and comfort and the supporting effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle frames, in particular to an adjustable middle-axle vehicle frame for a three-wheeled motorcycle. Background Art

[0002] A mid-axle three-wheeled motorcycle is a cargo vehicle with three wheels, one of which is located in the center of the vehicle and two wheels are located on both sides of the vehicle. Compared with traditional two-wheeled and four-wheeled vehicles, mid-axle three-wheeled motorcycles have the characteristics of small turning radius, low center of gravity, light body and strong load capacity.

[0003] In the prior art, the seat height is fixed and the backrest angle cannot be adjusted. An inappropriate seat height will affect the driver. Maintaining a fixed sitting posture for a long time will lead to poor blood circulation and muscle stiffness, increase riding fatigue, and is not conducive to long-term driving and riding, increasing driving risks. The fixed backrest angle cannot provide effective back support, which increases back fatigue and discomfort caused by long-term riding and reduces comfort and support effects. Utility Model Content

[0004] The utility model aims to provide an adjustable middle axle frame for a three-wheeled motorcycle to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An adjustable center axle frame for a three-wheeled motorcycle comprises a frame structure, wherein the frame structure comprises a support frame and a seat cushion bracket, wherein the seat cushion bracket is fixedly mounted on the support frame, a fixing structure is arranged on the seat cushion bracket, the fixing structure comprises a bottom plate, a lifting structure and a supporting structure are arranged on the top of the bottom plate, the supporting structure comprises a seat plate, and an adjustment structure is arranged on the seat plate.

[0007] As a further solution of the utility model: the base plate is fixedly installed on the top of the seat cushion bracket, the first sliding rod is fixedly installed inside the base plate, the bearing seat is fixedly installed in the middle position of the base plate, the screw is rotatably installed on the bearing seat, one end of the screw passes through the base plate and extends to the outside of the base plate, one end of the screw is fixedly installed on a turntable, a cross bar is threadedly installed on the screw, the first slider is slidably installed on the first sliding rod, and the first slider is fixedly connected to the cross bar.

[0008] As a further solution of the utility model: the seat plate is arranged at the top of the base plate, second slide bars are fixedly installed on both sides of the bottom end of the seat plate, and second slide blocks are slidably installed on the second slide bars.

[0009] As a further solution of the utility model: the lifting structure includes a first connecting rod, a second connecting rod, a connecting shaft, a first mounting plate and a second mounting plate, the first mounting plate is fixedly installed on one side of the base plate, the second mounting plate is fixedly installed on one side of the bottom end of the seat plate, the first mounting plate and the second mounting plate are on the same side, one end of the first connecting rod is rotatably connected to the first slider, the end of the first connecting rod away from the first slider is rotatably connected to the second mounting plate, one end of the second connecting rod is rotatably connected to the first mounting plate, the end of the second connecting rod away from the first mounting plate is rotatably connected to the second slider, and the first connecting rod and the second connecting rod are rotatably connected via a connecting shaft.

[0010] As a further solution of the utility model: the adjustment structure includes a back plate and a rotating shaft, the back plate is rotatably mounted on the seat plate via the rotating shaft, gears are fixedly mounted at both ends of the rotating shaft, slide grooves are respectively arranged on both sides of the seat plate, racks are arranged on both sides of the seat plate, slide rails are fixedly mounted on the racks, the slide rails extend into the slide grooves, the racks are slidably connected to the seat plate via the slide rails and the slide grooves, electric push rods are installed on both sides of the seat plate, and the telescopic ends of the electric push rods are connected to the racks.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The seat plate is raised or lowered through the lifting structure, providing flexible seat height adjustment to meet the needs of drivers of different heights. It allows drivers to adjust the seat height according to personal preferences and physical conditions to reduce riding fatigue. The rack drives the gear to rotate to adjust the angle of the backrest. Users can fine-tune the angle of the backrest to find the most comfortable support angle, reduce back fatigue and discomfort caused by long-term riding, and improve comfort and support effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the fixing structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the lifting structure of the utility model.

[0016] Figure 4 It is a schematic diagram of the adjustment structure of the utility model.

[0017] Notes on the accompanying drawings: 1. Frame structure; 11. Support frame; 12. Cushion bracket; 2. Fixing structure; 21. Bottom plate; 22. First slide bar; 23. Screw rod; 24. Bearing seat; 25. Cross bar; 26. First slider; 3. Lifting structure; 31. First connecting rod; 32. Second connecting rod; 33. Connecting shaft; 34. First mounting plate; 35. Second mounting plate; 4. Support structure; 41. Seat plate; 42. Second slide bar; 43. Second slider; 5. Adjusting structure; 51. Back plate; 52. Rotating shaft; 53. Gear; 54. Rack; 55. Slide rail; 56. Electric push rod. DETAILED DESCRIPTION

[0018] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0019] Example

[0020] See also Figure 1 to Figure 4In the embodiment of the utility model, an adjustable middle axle frame for a three-wheeled motorcycle includes a frame structure 1, the frame structure 1 includes a support frame 11 and a seat support 12, the seat support 12 is fixedly mounted on the support frame 11, a fixing structure 2 is arranged on the seat support 12, the fixing structure 2 includes a bottom plate 21, the bottom plate 21 is fixedly mounted on the top of the seat support 12, a first slide bar 22 is fixedly mounted in the bottom plate 21, a bearing seat 24 is fixedly mounted in the middle position of the bottom plate 21, a screw rod 23 is rotatably mounted on the bearing seat 24, and one end of the screw rod 23 passes through the bottom plate 21 and extends to the bottom plate 21 On the outside, a turntable is fixedly installed at one end of the screw rod 23, a cross bar 25 is threadedly installed on the screw rod 23, a first slider 26 is slidably installed on the first slider 22, and the first slider 26 is fixedly connected to the cross bar 25. A lifting structure 3 and a support structure 4 are arranged at the top of the bottom plate 21. The support structure 4 includes a seat plate 41, the seat plate 41 is arranged at the top of the bottom plate 21, and second sliders 42 are fixedly installed on both sides of the bottom end of the seat plate 41. A second slider 43 is slidably installed on the second slider 42. The lifting structure 3 includes a first connecting rod 31, a second connecting rod 32, a connecting shaft 33, a first mounting plate 34 and a first mounting plate 35. Two mounting plates 35, the first mounting plate 34 is fixedly mounted on one side of the bottom plate 21, the second mounting plate 35 is fixedly mounted on one side of the bottom end of the seat plate 41, the first mounting plate 34 and the second mounting plate 35 are on the same side, one end of the first connecting rod 31 is rotatably connected to the first slider 26, the end of the first connecting rod 31 away from the first slider 26 is rotatably connected to the second mounting plate 35, one end of the second connecting rod 32 is rotatably connected to the first mounting plate 34, the end of the second connecting rod 32 away from the first mounting plate 34 is rotatably connected to the second slider 43, the first connecting rod 31 and the second connecting rod 32 The seat plate 41 is rotatably connected by the connecting shaft 33, and an adjustment structure 5 is arranged on the seat plate 41. The adjustment structure 5 includes a support plate 51 and a rotating shaft 52. The support plate 51 is rotatably mounted on the seat plate 41 through the rotating shaft 52. Gears 53 are fixedly mounted at both ends of the rotating shaft 52. Slide grooves are respectively arranged on both sides of the seat plate 41. Racks 54 are arranged on both sides of the seat plate 41. Slide rails 55 are fixedly mounted on the racks 54. The slide rails 55 extend into the slide grooves. The racks 54 are slidably connected to the seat plate 41 through the slide rails 55 and the slide grooves. Electric push rods 56 are installed on both sides of the seat plate 41. The telescopic ends of the electric push rods 56 are connected to the racks 54.

[0021] See also Figure 1 to Figure 4, rotate the turntable, drive the screw rod 23 to rotate through the turntable, control the cross bar 25 to move on the screw rod 23 through the screw rod 23, and drive the first slider 26 to slide on the first slider 22 through the cross bar 25, because one end of the first connecting rod 31 is rotatably connected to the first slider 26, and the other end is rotatably connected to the second mounting plate 35, one end of the second connecting rod 32 is rotatably connected to the first mounting plate 34, and the other end of the second connecting rod 32 is rotatably connected to the second slider 43, and the first connecting rod 31 is rotatably connected to the second connecting rod 32 through the connecting shaft 33, so when the first slider 26 slides on the first slider 22, the first connecting rod 31 and the second connecting rod 32 will rotate at the connecting shaft 33 The second slider 43 slides on the second slide rod 42, and at the same time, the top positions of the first connecting rod 31 and the second connecting rod 32 are raised or lowered. The height of the seat plate 41 is controlled by the first connecting rod 31 and the second connecting rod 32. The height of the seat plate 41 is adjusted according to the height of the person, and the electric push rod 56 is started. The rack 54 is driven to move by the telescopic end of the electric push rod 56, and the slide rail 55 is driven to slide in the slide groove by the rack 54. Because the rack 54 is in meshing relationship with the gear 53, the rack 54 drives the gear 53 to rotate, and the gear 53 drives the rotating shaft 52 to rotate, and the rotating shaft 52 drives the support plate 51 to rotate, and the angle of the support plate 51 is adjusted by rotating the support plate 51.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable center axle frame for a three-wheeled motorcycle, comprising a frame structure (1), wherein the frame structure (1) comprises a support frame (11) and a seat cushion bracket (12), wherein the seat cushion bracket (12) is fixedly mounted on the support frame (11), and characterized in that: A fixing structure (2) is arranged on the cushion bracket (12), the fixing structure (2) comprising a bottom plate (21), a lifting structure (3) and a supporting structure (4) are arranged on the top of the bottom plate (21), the supporting structure (4) comprises a seat plate (41), and an adjusting structure (5) is arranged on the seat plate (41).

2. The adjustable middle axle frame for a three-wheeled motorcycle according to claim 1, characterized in that: The bottom plate (21) is fixedly mounted on the top of the cushion bracket (12); a first sliding rod (22) is fixedly mounted inside the bottom plate (21); a bearing seat (24) is fixedly mounted at the middle position of the bottom plate (21); a screw rod (23) is rotatably mounted on the bearing seat (24); one end of the screw rod (23) passes through the bottom plate (21) and extends to the outside of the bottom plate (21); a turntable is fixedly mounted on one end of the screw rod (23); a cross rod (25) is threadedly mounted on the screw rod (23); a first sliding block (26) is slidably mounted on the first sliding rod (22); and the first sliding block (26) is fixedly connected to the cross rod (25).

3. The adjustable middle axle frame for a three-wheeled motorcycle according to claim 1, characterized in that: The seat plate (41) is arranged at the top of the bottom plate (21), and second slide bars (42) are fixedly mounted on both sides of the bottom end of the seat plate (41), and second slide blocks (43) are slidably mounted on the second slide bars (42).

4. The adjustable middle axle frame for a three-wheeled motorcycle according to claim 1, characterized in that: The lifting structure (3) comprises a first connecting rod (31), a second connecting rod (32), a connecting shaft (33), a first mounting plate (34) and a second mounting plate (35); the first mounting plate (34) is fixedly mounted on one side of the bottom plate (21); the second mounting plate (35) is fixedly mounted on one side of the bottom end of the seat plate (41); the first mounting plate (34) and the second mounting plate (35) are on the same side; one end of the first connecting rod (31) is rotatably connected to the first slider (26); one end of the first connecting rod (31) away from the first slider (26) is rotatably connected to the second mounting plate (35); one end of the second connecting rod (32) is rotatably connected to the first mounting plate (34); one end of the second connecting rod (32) away from the first mounting plate (34) is rotatably connected to the second slider (43); and the first connecting rod (31) and the second connecting rod (32) are rotatably connected via the connecting shaft (33).

5. The adjustable middle axle frame for a three-wheeled motorcycle according to claim 1, characterized in that: The adjustment structure (5) comprises a backing plate (51) and a rotating shaft (52); the backing plate (51) is rotatably mounted on the seat plate (41) via the rotating shaft (52); gears (53) are fixedly mounted at both ends of the rotating shaft (52); slide grooves are respectively arranged on both sides of the seat plate (41); racks (54) are arranged on both sides of the seat plate (41); slide rails (55) are fixedly mounted on the racks (54); the slide rails (55) extend into the slide grooves; the racks (54) are slidably connected to the seat plate (41) via the slide rails (55) and the slide grooves; electric push rods (56) are installed on both sides of the seat plate (41); and the telescopic ends of the electric push rods (56) are connected to the racks (54).

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