Electric control shifting fork structure of electric tricycle and electric tricycle

Abstract

The utility model provides an electric control shifting fork structure of an electro-tricycle, which comprises a gear shifting box, an installation platform and a driving mechanism, a gear shifting shaft is horizontally arranged in the gear shifting box, a shifting fork is sleeved on the gear shifting shaft in a sliding mode, the installation platform is arranged on the gear shifting box, an installation column is fixedly arranged at the bottom of the installation platform, a shifting plate is sleeved on the installation column in a rotating mode, and the driving mechanism is arranged on the driving mechanism. The mounting column is further sleeved with a torsion spring, the two extending ends of the torsion spring abut against the two sides of the shifting fork respectively, and the driving mechanism is arranged on the mounting platform and used for driving the shifting plate to deflect around the mounting column. And the problem that the gear cannot be engaged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shift forks, in particular to an electric-controlled shift fork structure of an electric tricycle and the electric tricycle. Background Art

[0002] The shift mechanism of an electric tricycle is a key component in the transmission system, responsible for switching the gear set from one gear to another, thereby achieving smooth driving of the vehicle under different speeds and load conditions. The shift mechanism usually works in conjunction with the drive shaft and gear set in the gearbox. Its main function is to push the gears to slide along the drive shaft through mechanical or electronic control devices to achieve gear switching.

[0003] The current electric tricycle shift mechanism mainly adopts a rigid fork structure. When the gear set is not fully aligned, it is easy to fail to engage the gear or shift smoothly. This is more obvious when the vehicle is heavily loaded or driving at high speed, resulting in interruption of vehicle power transmission and affecting the driver's control of vehicle speed and acceleration. Especially at critical moments such as going uphill, overtaking or emergency braking, it cannot respond in time, reducing driving safety. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an electronically controlled shift fork structure for an electric tricycle, which solves the problem in the prior art that the shift fork of the shift mechanism is in rigid contact with the gear set, the shift fork and the gear set are not fully aligned, and the gear cannot be engaged.

[0005] According to an embodiment of the utility model, an electric-controlled shift fork structure of an electric tricycle includes a shift box, a mounting platform and a driving mechanism, a shift shaft is horizontally provided in the shift box, a shift fork is slidably mounted on the shift shaft, the mounting platform is arranged on the shift box, a mounting column is fixedly provided at the bottom of the mounting platform, a shift plate is rotatably mounted on the mounting column, a torsion spring is also mounted on the mounting column, two extending ends of the torsion spring are respectively abutted against two sides of the shift fork, the driving mechanism is arranged on the mounting platform, and the driving mechanism is used to drive the shift plate to deflect around the mounting column.

[0006] Compared with the prior art, the utility model has the following beneficial effects: by arranging a rotating column at the bottom of the mounting platform, a torsion spring and a toggle plate are movably sleeved on the rotating column, so that when the driving mechanism drives the toggle plate to deflect, the toggle plate can drive the two extended ends of the torsion spring to push the shift fork to move along the shift shaft, so that the gear set connected to it can achieve engagement of different gears, thereby achieving the purpose of shifting; since the two extended ends of the torsion spring are elastic, during the shifting process, the shift fork will not have a rigid collision with the gear set; on the other hand, when the gears on the gear set are not fully aligned, the extended end of the torsion spring can be adaptively displaced slightly to avoid the situation of gear shifting jamming; when the shift fork is aligned with the gear set again, the shift fork moves to a predetermined position under the push of the extended end of the torsion spring to complete the gear shifting.

[0007] Furthermore, a toggle plate is provided at one end of the toggle plate away from the mounting column, and slots are provided on both sides of the toggle plate. The two extended ends of the torsion spring are respectively located in the two slots of the toggle plate.

[0008] Furthermore, a diamond block is provided on the top of the shift fork, and two extended ends of the torsion spring are respectively located on both sides of the diamond block.

[0009] Furthermore, a spring contact piece is provided on the top of the diamond block, and the spring contact piece extends toward the mounting platform, and a plurality of conductive spring pieces are embedded at the bottom of the mounting platform.

[0010] Furthermore, both ends of the shifting piece are bent in a direction away from the shifting fork.

[0011] Furthermore, the diamond block and the shift fork are integrally formed.

[0012] On the other hand, according to an embodiment of the utility model, there is also provided an electric tricycle, which comprises the electric-controlled fork structure of the electric tricycle described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the shift box according to an embodiment of the utility model.

[0015] Figure 3 This is a top view of the installation platform of an embodiment of the utility model.

[0016] Figure 4 This is a test diagram of the internal structure of the shift box of an embodiment of the utility model.

[0017] Figure 5 This is a schematic diagram of the installation of the spring contact piece of the embodiment of the utility model.

[0018] Figure 6This is a schematic diagram of the bottom structure of the installation platform of an embodiment of the utility model.

[0019] Figure 7 This is an axonometric view of the connection between the torsion spring and the shift fork according to an embodiment of the utility model.

[0020] Figure 8 This is a side view of the connection between the torsion spring and the shift fork according to an embodiment of the utility model.

[0021] In the above drawings: 1, shift box; 2, shift shaft; 3, shift fork; 4, mounting platform; 5, mounting column; 6, toggle plate; 7, torsion spring; 8, extension end; 9, toggle plate; 10, diamond block; 11, spring contact piece; 12, conductive spring piece; 13, drive motor; 14, first gear; 15, first idler gear; 16, second idler gear; 17, worm; 18, second gear; 19, rotating shaft; 20, turbine; 21, toggle column; 22, gear set. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 , 2As shown in Figures 3 and 4, the embodiment of the utility model proposes an electric control fork structure of an electric tricycle, including a shift box 1, a mounting platform 4 and a driving mechanism. A shift shaft 2 is horizontally arranged in the shift box 1, a shift fork 3 is slidably sleeved on the shift shaft 2, the mounting platform 4 is arranged on the shift box 1, a mounting column 5 is fixedly arranged at the bottom of the mounting platform 4, a shift plate 6 is rotatably sleeved on the mounting column 5, a torsion spring 7 is also sleeved on the mounting column 5, and two extended ends 8 of the torsion spring 7 are respectively abutted against the two sides of the shift fork 3, and the driving mechanism is arranged on the mounting platform 4, and the driving mechanism is used to drive the shift plate 6 to deflect around the mounting column 5. Specifically, a gear set 22 is arranged in the shift box 1, a gear sleeve is arranged on the gear set 22, one end of the shift fork 3 is embedded in the groove of the gear sleeve, and the gear sleeve is driven to move horizontally by the shift fork 3. The sliding of the gear sleeve determines which gear is meshed with the drive shaft, thereby realizing the switching of different gears. This is the existing technology of the shift mechanism, and no further description is made here. The torsion spring 7 is movably connected to the mounting column 5. When shifting gears, the driving mechanism is started, and a groove is provided on the mounting platform 4. The driving mechanism is arranged in the groove. The driving mechanism drives the toggle plate 6 to deflect around the mounting column 5, so that the toggle plate 6 drives the torsion spring 7 to rotate, so that the extending end 8 on the torsion spring 7 pushes the shift fork 3 to move along the shift shaft 2 to realize the shifting operation. In this embodiment, the two extending ends 8 of the torsion spring 7 are respectively a first extending portion and a second extending portion. When the driving mechanism drives the toggle plate 6 to deflect counterclockwise, the toggle plate 6 drives the first extending portion to move to the left. When the first extending portion moves to the left, the torsion spring 7 and the mounting column 5 rotate relative to each other, so that the second extending portion also moves toward the left, so that the second extending portion pushes the shift fork 3 to move to the left to realize the shifting operation. The same is true when the driving mechanism drives the toggle plate 6 to rotate clockwise, which will not be repeated here. The shift fork 3 mechanism uses the two extended ends 8 of the torsion spring 7 to shift the shift fork 3 horizontally to achieve gear shifting. Since the two extended ends 8 are elastic, rigid collision between the shift fork 3 and the gear set is avoided during the gear shifting process. At the same time, due to the elastic characteristics of the extended ends 8 of the torsion spring 7, a certain amount of misalignment or error can be allowed. When the gear positions on the gear set 22 are not completely aligned, the extended ends 8 of the torsion spring 7 can adapt to small displacements to prevent gear shifting from getting stuck, thereby improving the driving experience of the driver. When the shift fork 3 is aligned with the gear set 22, the extended ends 8 of the torsion spring 7 push the shift fork 3 to move again to complete the gear shifting.

[0024] like Figure 4 , 56, further, a toggle plate 9 is provided at one end of the toggle plate 6 away from the mounting column 5, and a clamping groove is provided on both sides of the toggle plate 9, and the two extended ends 8 of the torsion spring 7 are respectively located in the two clamping grooves of the toggle plate 9. In this embodiment, the toggle plate 9 is vertically arranged with the toggle plate 6, and the toggle plate 9 and the toggle plate 6 are integrally formed, and the toggle plate 9 is an inverted T-shaped structure, and the two extended ends 8 of the torsion spring 7 are respectively located in the clamping grooves on the left and right sides of the toggle plate 9, so that when the toggle plate 9 moves, the extended ends 8 of the torsion spring 7 can be pushed to displace, so that the extended ends 8 of the torsion spring 7 push the shift fork 3 to move along the shift shaft 2 to achieve the shifting operation.

[0025] like Figure 5 , 7 As shown in Figures 1 and 8, further, a diamond block 10 is provided on the top of the shift fork 3, and the two extended ends 8 of the torsion spring 7 are respectively located on both sides of the diamond block 10. The diamond block 10 is provided on the top of the shift fork 3. When the two extended ends 8 of the torsion spring 7 push the shift fork 3 to move horizontally, the extended ends 8 of the torsion spring 7 abut against the side walls of the diamond block 10. Since both sides of the diamond block 10 have inclined surfaces, the extended ends 8 of the torsion spring 7 have elastic characteristics, so that when the extended ends 8 of the torsion spring 7 push the shift fork 3 to move, the contact surface between the extended ends 8 and the inclined surfaces of the diamond block 10 gradually increases, so that the extended section pushes the shift fork 3 to move horizontally for shifting more stably.

[0026] like Figure 5 , 6 , 7, and 8, further, a spring contact piece 11 is provided at the top of the diamond block 10, and the spring contact piece 11 extends toward the direction of the mounting platform 4, and a plurality of conductive spring pieces 12 are embedded at the bottom of the mounting platform 4. In this embodiment, three conductive spring pieces 12 are embedded at the bottom of the mounting platform 4, and each conductive spring piece 12 is electrically connected to a controller and a display. When the shift fork 3 moves horizontally and shifts gears, the spring contact piece 11 at the top of the shift fork 3 will contact with the corresponding blade contact piece to achieve electrical connection, thereby generating an electrical signal, which is displayed on the display in the form of text or images to remind the driver whether the vehicle is currently in the low gear, middle gear, or reverse gear state, so that the driver and passengers can know the driving state of the vehicle at a glance in the cab.

[0027] like Figure 6 , 7 As shown in FIG. 8 , further, both ends of the toggle piece 9 are bent in the direction away from the shift fork 3. When the toggle piece 9 on the toggle plate 6 drives the extended end 8 of the torsion spring 7 to push the shift fork 3 to move, the toggle piece 9 will deflect and the shift fork 3 will move. The bent toggle piece 9 leaves space for the movement of the shift fork 3 to avoid interference between the toggle piece 9 and the shift fork 3.

[0028] Furthermore, the diamond block 10 is integrally formed with the shift fork 3. The diamond block 10 and the shift fork 3 are integrally formed to improve the overall strength of the two when they are combined together.

[0029] like Figure 2 , 3 As shown, in this embodiment, the driving assembly includes: a driving motor 13, the driving motor 13 is fixedly arranged on the top of the mounting platform 4, a first gear 14 is arranged on the output end of the driving motor 13, a first idler wheel 15 and a second idler wheel 16 are also rotatably arranged on the mounting platform 4, the first idler wheel 15 is transmission-connected with the first gear 14, the second idler wheel 16 is transmission-connected with the first idler wheel 15, a deflection assembly for driving the deflection of the toggle plate 6 is also arranged on the mounting platform 4, and the second idler wheel 16 is transmission-connected with the deflection assembly. The first idler wheel 15 and the second idler wheel 16 play a role in power transmission. When the gear shifting operation is performed, the driving motor 13 is started, and the rotation of the driving motor 13 drives the first gear 14 at its output end to rotate, the first gear 14 transmits power to the first idler wheel 15, the first idler wheel 15 transmits power to the second idler wheel 16, and the second idler wheel 16 finally transmits power to the deflection assembly, so that the toggle plate 6 is deflected, so that the shift fork 3 moves along the shift shaft 2 to achieve gear shifting. Preferably, the mounting platform 4 is detachably bolted with an end cover (not shown in the figure) for covering components such as the drive motor 13 .

[0030] In this embodiment, the deflection assembly includes: a worm 17, which is horizontally and rotatably arranged on the top of the mounting platform 4, a second gear 18 is fixedly sleeved on the worm 17, and the second gear 18 is transmission-connected with the second idler 16, a rotating shaft 19 is vertically and rotationally penetrated on the mounting platform 4, a turbine 20 is fixedly sleeved on the rotating shaft 19, and the turbine 20 is meshed with the worm 17, and a toggle post 21 is eccentrically arranged at one end of the rotating shaft 19 close to the toggle plate 6, and a through groove for the toggle post 21 to extend into is provided on the toggle plate 6. The second idler 16 transmits power to the second gear 18, so that the second gear 18 drives the worm 17 to rotate, and the rotation of the worm 17 drives the turbine 20 meshed with it to rotate, and the turbine 20 transmits power to the rotating shaft 19, so that the rotating shaft 19 rotates, and finally the toggle post 21 on the rotating shaft 19 swings eccentrically, thereby driving the toggle plate 6 to deflect, so that the toggle plate 6 drives the extended end 8 of the torsion spring 7 to push the shift fork 3 to move.

[0031] On the other hand, according to an embodiment of the utility model, an electric tricycle is also provided, which includes the above-mentioned electric tricycle electric control fork structure. In this embodiment, at least two control buttons are provided in the electric tricycle, and the two control buttons are electrically connected to the controller respectively, and the controller is electrically connected to the drive motor 13, so that the driver can control the forward or reverse rotation of the drive motor 13 in the electric tricycle by pressing the corresponding control button to drive the fork 3 to move, thereby realizing the shifting operation of the electric tricycle.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the gist and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. An electric-controlled fork structure for an electric tricycle, characterized in that: include: A shift box (1), wherein a shift shaft (2) is horizontally arranged in the shift box (1), and a shift fork (3) is slidably sleeved on the shift shaft (2); A mounting platform (4), the mounting platform (4) being arranged on the shift box (1), a mounting column (5) being fixedly arranged at the bottom of the mounting platform (4), a shift plate (6) being rotatably sleeved on the mounting column (5), a torsion spring (7) being sleeved on the mounting column (5), two extended ends (8) of the torsion spring (7) being respectively in contact with two sides of the shift fork (3); A driving mechanism is arranged on the mounting platform (4), and is used to drive the toggle plate (6) to deflect around the mounting column (5).

2. The electric-controlled fork structure of an electric tricycle as claimed in claim 1, characterized in that: A toggle plate (9) is provided at one end of the toggle plate (6) away from the mounting column (5), and slots are provided on both sides of the toggle plate (9). The two extended ends (8) of the torsion spring (7) are respectively located in the two slots of the toggle plate (9).

3. The electric-controlled fork structure of an electric tricycle as claimed in claim 1, characterized in that: A diamond block (10) is provided on the top of the shift fork (3), and two extended ends (8) of the torsion spring (7) are respectively located on both sides of the diamond block (10).

4. The electric-controlled fork structure of an electric tricycle as claimed in claim 3, characterized in that: A spring contact piece (11) is provided on the top of the diamond block (10), and the spring contact piece (11) extends in the direction of the mounting platform (4). A plurality of conductive spring pieces (12) are embedded on the bottom of the mounting platform (4).

5. The electric-controlled fork structure of an electric tricycle as claimed in claim 2, characterized in that: Both ends of the shifting piece (9) are bent in a direction away from the shifting fork (3).

6. The electric-controlled fork structure of an electric tricycle as claimed in claim 3, characterized in that: The diamond block (10) and the shift fork (3) are integrally formed.

7. An electric tricycle, characterized in that: An electrically controlled fork structure for an electric tricycle comprising any one of claims 1-6.

Images