Swing tricycle

Abstract

The utility model relates to the technical field of tricycles, in particular to a swinging tricycle which comprises a front frame, a rear hopper, a connecting frame, a swinging device, a universal shaft and a differential motor, a front wheel is mounted at the front end of the front frame, a driving chain wheel is mounted in the middle of the front frame, and rear wheels are symmetrically mounted on the left side and the right side of the rear hopper. The connecting frame is arranged in the rear car hopper and located at the bottom end of the rear car hopper, the top end of the front portion of the connecting frame is connected with the front end of the rear car hopper through a swinger, the front end of the connecting frame is connected with the rear end of the front car frame, and the left side and the right side of the middle of the connecting frame are connected with rear wheels through universal shafts correspondingly. The differential motor is installed in the middle of the connecting frame, an output shaft of the differential motor is connected with the universal shaft, and a flywheel on the differential motor is in transmission connection with the driving chain wheel through a driving chain; the driving chain is simple in structural design, 8-shaped distortion of the driving chain is avoided, the chain falling phenomenon is prevented, and the driving chain is not prone to rollover during rapid turning.

Description

Technical Field

[0001] The utility model relates to the technical field of tricycles, in particular to a swing tricycle. Background Art

[0002] The frame of the rocking tricycle consists of a front frame and a rear frame. When turning, the front frame can twist at a certain angle relative to the rear frame to move the center of gravity to the inside of the curve, thereby making the tricycle more stable and reliable when turning.

[0003] Since the front drive sprocket and the rear drive sprocket are connected by a drive chain, when the front frame swings, the drive chain will be twisted in a figure 8 shape, which is prone to chain falling off. In addition, the torque of the left and right twists is different, which affects the transmission performance. It is easy to roll over when turning quickly, affecting riding safety and riding experience. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a swing tricycle with a simple structural design, which can avoid the drive chain from falling off due to 8-shaped distortion and is not easy to tip over when turning quickly.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a swing tricycle, including a front frame and a rear bucket, the front end of the front frame is equipped with a front wheel, and the middle part is equipped with a driving sprocket, the rear bucket is symmetrically equipped with rear wheels on the left and right sides, and also includes a connecting frame, a rocker, a universal shaft and a differential motor, the connecting frame is arranged in the rear bucket, and it is located at the bottom end of the rear bucket, the front top end of the connecting frame is connected to the front end of the rear bucket through the rocker, the front end of the connecting frame is connected to the rear end of the front frame, and the left and right sides of the middle part are respectively connected to the rear wheels through the universal shaft, the differential motor is installed in the middle part of the connecting frame, and its output shaft is connected to the universal shaft, and the flywheel on the differential motor is connected to the driving sprocket through a driving chain.

[0006] Furthermore, the rocker includes a shell, a U-shaped plate, a rocking shaft and a recovery assembly. The shell is a hollow disc structure, installed in the middle of the front end of the rear truck bucket and located in the U-shaped plate. The U-shaped plate is installed at the front top of the connecting frame. The rocking shaft passes through the middle of the shell and rotates with the shell. The two ends of the rocking shaft are respectively connected to the two sides of the U-shaped plate. The recovery assembly is arranged in the shell and is sleeved on the middle of the rocking shaft.

[0007] Further, the restoring component includes a fixed shaft, a spacer sleeve, an elastic block and a gasket. The fixed shaft is sleeved on the middle part of the swing shaft. The spacer sleeve is installed on the inner wall of the housing and coaxially sleeved outside the fixed shaft. A plurality of first card slots are circumferentially formed on the outer wall of the fixed shaft, and a plurality of second card slots are circumferentially formed on the inner wall of the spacer sleeve. The first card slots correspond to the second card slots. The elastic block is embedded in the first card slots and the second card slots. The gaskets are respectively sleeved on both ends of the fixed shaft and connected to the spacer sleeve.

[0008] Further, the universal shaft includes a transmission shaft and a universal joint. Both ends of the transmission shaft are respectively connected to the axle of the rear wheel and the output shaft of the differential motor through universal joints.

[0009] Further, the housing includes a circular plate, a front end cover and a rear end cover. The circular plate is installed in the middle of the front end of the rear cargo bed. The front end cover is installed on the front side of the circular plate. The front end cover is sleeved on the swing shaft and is in clearance fit with the swing shaft. The rear end cover is installed on the rear side of the circular plate. The rear end cover is sleeved on the swing shaft and is in rotational fit with the swing shaft.

[0010] Further, annular ridges are respectively provided on the relative inner sides of the front end cover and the rear end cover, and both ends of the inner wall of the circular plate are respectively in contact with the outer walls of the annular ridges.

[0011] Further, a plurality of grooves are circumferentially formed on the inner wall of the circular plate, and a plurality of convex blocks are circumferentially provided on the outer wall of the spacer sleeve. The convex blocks are embedded in the grooves.

[0012] Further, the rear end of the swing shaft is connected to one side of the U-shaped plate, and its front end is connected to the other side of the U-shaped plate through a shaft sleeve and locked by a nut.

[0013] Further, a speed measurement sensor is installed at the left end of the bottom of the connecting frame.

[0014] The beneficial effects of the present utility model are as follows:

[0015] (1) In the present utility model, the front top of the connecting frame is connected to the front end of the rear cargo bed through a swing device, and the front end of the connecting frame is connected to the rear end of the front vehicle frame. When the front vehicle frame swings, the front vehicle frame and the connecting frame swing integrally relative to the rear cargo bed, so that the driving chain will not be twisted in a figure-eight shape, ensuring the reliability of the transmission performance and improving the riding safety and riding experience.

[0016] (2) With the arrangement of the restoring component in the present utility model, when the front vehicle frame swings relative to the rear cargo bed, it can automatically return to the initial state, further enhancing the riding experience. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a schematic structural view of the present utility model;

[0019] Figure 2 is a schematic view of the flywheel in the present utility model;

[0020] Figure 3 is a schematic view of the universal shaft in the present utility model;

[0021] Figure 4 is a schematic view of the rocker in the present utility model;

[0022] Figure 5 is a schematic view of the housing in the present utility model;

[0023] Figure 6 is a sectional view of the rocker in the present utility model;

[0024] Figure 7 is a schematic view of the rocker with the front end cover removed in the present utility model;

[0025] Figure 8 is a schematic view of the recovery component with the gasket removed in the present utility model.

[0026] In the figure: 100, front frame; 110, front wheel; 200, rear cargo bed; 210, rear wheel; 300, connecting frame; 400, rocker; 410, housing; 411, circular plate; 4111, groove; 412, front end cover; 413, rear end cover; 420, U-shaped plate; 430, rocker shaft; 440, recovery component; 441, fixed shaft; 4411, first card slot; 442, spacer sleeve; 4421, second card slot; 443, elastic block; 444, gasket; 500, universal shaft; 510, transmission shaft; 520, universal joint; 600, differential motor; 610, flywheel; 700, annular rib; 800, bump; 900, bushing; 1000, nut; 1100, speed measurement sensor. Detailed implementation manners

[0027] Now, the present utility model will be further described with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0028] Such as Figures 1-3As shown in the figure, a rocking tricycle includes a front frame 100 and a rear cargo box 200. A front wheel 110 is installed at the front end of the front frame 100, and a driving sprocket (not shown in the figure) is installed in the middle thereof. Rear wheels 210 are symmetrically installed on both left and right sides of the rear cargo box 200. It further includes a connecting frame 300, a rocker 400, a universal shaft 500, and a differential motor 600. The connecting frame 300 is arranged inside the rear cargo box 200 and is located at the bottom end of the rear cargo box 200. The front top end of the connecting frame 300 is connected to the front end of the rear cargo box 200 through the rocker 400. The front end of the connecting frame 300 is connected to the rear end of the front frame 100, and the left and right sides in the middle thereof are respectively connected to the rear wheels 210 through the universal shaft 500. The differential motor 600 is installed in the middle of the connecting frame 300, and its output shaft is connected to the universal shaft 500. A flywheel 610 on the differential motor 600 is in transmission connection with the driving sprocket through a driving chain (not shown in the figure). The front top end of the connecting frame 300 is connected to the front end of the rear cargo box 200 through the rocker 400, and the front end of the connecting frame 300 is connected to the rear end of the front frame 100. When the front frame 100 rocks, the front frame 100 and the connecting frame 300 rock integrally relative to the rear cargo box 200, so that the driving chain will not be twisted in an 8-shaped manner, ensuring the reliability of the transmission performance and improving the riding safety and riding experience. Specifically, the flywheel 610 is installed on the output shaft of the differential motor 600.

[0029] As Figures 4-6 shown, the rocker 400 includes a housing 410, a U-shaped plate 420, a rocking shaft 430, and a restoring component 440. The housing 410 has a hollow disc structure. The housing 410 is installed in the middle of the front end of the rear cargo box 200 and is located inside the U-shaped plate 420. The U-shaped plate 420 is installed at the front top end of the connecting frame 300. The rocking shaft 430 penetrates through the middle of the housing 410 and is rotationally matched with the housing 410. Both ends of the rocking shaft 430 are connected to both sides of the U-shaped plate 420. The restoring component 440 is arranged inside the housing 410 and is sleeved on the middle of the rocking shaft 430. The setting of the restoring component 440 can automatically return to the initial state when the front frame 100 rocks relative to the rear cargo box 200, further enhancing the riding experience.

[0030] As Figures 6-8As shown in the figure, the restoring component 440 includes a fixed shaft 441, a spacer sleeve 442, an elastic block 443 and a gasket 444. The fixed shaft 441 is sleeved on the middle part of the swing shaft 430. The spacer sleeve 442 is installed on the inner wall of the housing 410 and coaxially sleeved outside the fixed shaft 441. A plurality of first card slots 4411 are circumferentially formed on the outer wall of the fixed shaft 441, and a plurality of second card slots 4421 are circumferentially formed on the inner wall of the spacer sleeve 442. The first card slots 4411 correspond to the second card slots 4421. The elastic block 443 is embedded in the first card slots 4411 and the second card slots 4421. The gaskets 444 are respectively sleeved on both ends of the fixed shaft 441 and connected to the spacer sleeve 442. Specifically, the elastic block 443 is made of an elastic material; the gasket 444 is connected to the spacer sleeve 442 by bolts. When the rocker 400 is stationary, the elastic block 443 does not deform; when the front vehicle frame 100 swings relative to the rear cargo box 200, the U-shaped plate 420 swings relative to the housing 410, and then drives the fixed shaft 441 to rotate relative to the spacer sleeve 442 through the swing shaft 430, and the middle part of the elastic block 443 is squeezed and deformed; when the front vehicle frame 100 needs to return to the initial state, the elasticity of the elastic block 443 plays an automatic restoring role. The setting of the gasket 444 can prevent sundries from entering the first card slots 4411 and the second card slots 4421.

[0031] As Figure 2 and Figure 3 shown in the figure, the universal shaft 500 includes a transmission shaft 510 and a universal joint 520. Both ends of the transmission shaft 510 are respectively connected to the wheel axle of the rear wheel 210 and the output shaft of the differential motor 600 through the universal joint 520. Through the setting of the universal shaft 500, the influence of different left and right torques is reduced, and the transmission performance is guaranteed.

[0032] As Figures 4-6 shown in the figure, the housing 410 includes a circular plate 411, a front end cover 412 and a rear end cover 413. The circular plate 411 is installed in the middle of the front end of the rear cargo box 200. The front end cover 412 is installed on the front side of the circular plate 411. The front end cover 412 is sleeved on the swing shaft 430 and is in clearance fit with the swing shaft 430. The rear end cover 413 is installed on the rear side of the circular plate 411. The rear end cover 413 is sleeved on the swing shaft 430 and is in rotational fit with the swing shaft 430. Specifically, the circular plate 411 is integrally formed and connected with the rear cargo box 200; the rear end cover 413 is sleeved on the swing shaft 430 through a bearing; both the front end cover 412 and the rear end cover 413 are connected to the circular plate 411 by bolts, which is convenient for installation and disassembly.

[0033] As Figure 6 shown in the figure, annular convex ribs 700 are respectively provided on the relative inner sides of the front end cover 412 and the rear end cover 413. Both ends of the inner wall of the circular plate 411 are in contact with the outer walls of the annular convex ribs 700. The setting of the annular convex ribs 700 plays a positioning role and is convenient for the installation of the front end cover 412 and the rear end cover 413.

[0034] As Figure 7 shown, a plurality of grooves 4111 are circumferentially formed in the inner wall of the circular plate 411, and a plurality of protrusions 800 are circumferentially provided on the outer wall of the spacer sleeve 442. The protrusions 800 are embedded in the grooves 4111. The cooperation setting of the protrusions 800 and the grooves 4111 facilitates the fixing, installation and disassembly of the spacer sleeve 442 in the circular plate 411.

[0035] As Figure 6 shown, the rear end of the swing shaft 430 is connected to one side of the U-shaped plate 420, and its front end is connected to the other side of the U-shaped plate 420 through a bushing 900 and locked by a nut 1000. Specifically, the nut 1000 is in threaded cooperation with the front end of the swing shaft 430.

[0036] As Figure 2 shown, a speed sensor 1100 is installed at the left end of the bottom of the connecting frame 300.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A swing tricycle, comprising a front frame (100) and a rear bucket (200), wherein a front wheel (110) is mounted at the front end of the front frame (100), and a driving sprocket is mounted in the middle thereof, and rear wheels (210) are symmetrically mounted on the left and right sides of the rear bucket (200), characterized in that: The invention also comprises a connecting frame (300), a rocker (400), a universal shaft (500) and a differential motor (600). The connecting frame (300) is arranged in the rear bucket (200) and is located at the bottom end of the rear bucket (200). The front top of the connecting frame (300) is connected to the front end of the rear bucket (200) through the rocker (400). The front end of the connecting frame (300) is connected to the rear end of the front frame (100), and the left and right sides of the middle are respectively connected to the rear wheels (210) through the universal shaft (500). The differential motor (600) is installed in the middle of the connecting frame (300), and its output shaft is connected to the universal shaft (500). The flywheel (610) on the differential motor (600) is connected to the drive sprocket through a drive chain.

2. The rocking tricycle according to claim 1, characterized in that: The rocker (400) comprises a shell (410), a U-shaped plate (420), a rocking shaft (430) and a recovery assembly (440). The shell (410) is a hollow disc structure. The shell (410) is installed in the middle of the front end of the rear truck box (200) and is located in the U-shaped plate (420). The U-shaped plate (420) is installed at the front top of the connecting frame (300). The rocking shaft (430) passes through the middle of the shell (410) and is rotatably matched with the shell (410). The two ends of the rocking shaft (430) are respectively connected to the two sides of the U-shaped plate (420). The recovery assembly (440) is arranged in the shell (410) and is sleeved in the middle of the rocking shaft (430).

3. The rocking tricycle according to claim 2, characterized in that: The recovery assembly (440) comprises a fixed shaft (441), a spacer (442), an elastic block (443) and a gasket (444); the fixed shaft (441) is sleeved on the middle part of the swing shaft (430); the spacer (442) is installed on the inner wall of the housing (410) and is coaxially sleeved on the fixed shaft (441); the outer wall of the fixed shaft (441) is provided with a plurality of first slots (4411) along the circumferential direction; the inner wall of the spacer (442) is provided with a plurality of second slots (4421) along the circumferential direction; the first slots (4411) correspond to the second slots (4421); the elastic block (443) is embedded in the first slots (4411) and the second slots (4421); the gasket (444) is sleeved on both ends of the fixed shaft (441) and is connected to the spacer (442).

4. The rocking tricycle according to claim 1, characterized in that: The universal shaft (500) comprises a transmission shaft (510) and a universal joint (520), and the two ends of the transmission shaft (510) are respectively connected to the axle of the rear wheel (210) and the output shaft of the differential motor (600) through the universal joint (520).

5. The rocking tricycle according to claim 3, characterized in that: The shell (410) includes a circular plate (411), a front end cover (412) and a rear end cover (413); the circular plate (411) is installed at the front middle part of the rear truck box (200); the front end cover (412) is installed on the front side of the circular plate (411); the front end cover (412) is sleeved on the swing shaft (430) and is loosely matched with the swing shaft (430); the rear end cover (413) is installed on the rear side of the circular plate (411); the rear end cover (413) is sleeved on the swing shaft (430) and is rotationally matched with the swing shaft (430).

6. The rocking tricycle according to claim 5, characterized in that: Annular ridges (700) are respectively provided on the opposite inner sides of the front end cover (412) and the rear end cover (413), and both ends of the inner wall of the circular plate (411) are respectively in contact with the outer walls of the annular ridges (700).

7. The rocking tricycle according to claim 5, characterized in that: The inner wall of the circular plate (411) is provided with a plurality of grooves (4111) along the circumferential direction, and the outer wall of the spacer (442) is provided with a plurality of protrusions (800) along the circumferential direction, and the protrusions (800) are embedded in the grooves (4111).

8. The rocking tricycle according to claim 2, characterized in that: The rear end of the swing shaft (430) is connected to one side of the U-shaped plate (420), and the front end thereof is connected to the other side of the U-shaped plate (420) via a shaft sleeve (900) and is locked by a nut (1000).

9. The rocking tricycle according to claim 1, characterized in that: A speed sensor (1100) is installed at the left end of the bottom of the connecting frame (300).

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