CN114379690B

CN114379690B - Tiltable vehicle with two front wheels

Info

Publication number: CN114379690B
Application number: CN202111021233.6A
Authority: CN
Inventors: 廖伟翔; 庄惟霖; 丁信志
Original assignee: Kwang Yang Motor Co Ltd
Current assignee: Kwang Yang Motor Co Ltd
Priority date: 2020-10-22
Filing date: 2021-09-01
Publication date: 2023-06-30
Anticipated expiration: 2041-09-01
Also published as: TWI774094B; FR3115499A1; CN114379690A; TW202216523A

Abstract

The present invention provides a tiltable vehicle having two front wheels, comprising: a vehicle body; two front wheels; a tilting mechanism and a pair of front shock absorbers, which are arranged between the vehicle body and the front wheels and are used for supporting the front wheels so that the front wheels can move up and down relative to the vehicle body; a locking device for locking the tilting mechanism and the pair of front shock absorbers or unlocking the front shock absorbers to limit up-down movement of the front wheels or to release the limit; an engine speed sensor for sensing an engine speed; a vehicle speed sensor for sensing a vehicle speed; a locking switch; and a controller electrically connected with the engine speed sensor, the vehicle speed sensor and the locking switch, wherein when the locking switch is pressed, the controller judges whether to control the locking device to switch from an unlocking state to a locking state according to the engine speed and the vehicle speed.

Description

Tiltable vehicle with two front wheels

Technical Field

The present invention relates to a vehicle, and more particularly to a tiltable vehicle having two front wheels.

Background

As is well known, a typical motorcycle generally has a rear wheel and a front wheel on the same axis as the rear wheel. The unstable design of only one rear wheel and one front wheel, although changing the operation sensitivity, relatively sacrifices the stability of riding, so that the rider has to rely on the balance feeling of the rider to control the motorcycle to avoid the motorcycle from toppling over, and therefore, the aged or the people with poor balance feeling are not suitable for riding the motorcycle.

Accordingly, in order to improve stability of the motorcycle, related industries have actively developed and produced motor tricycle having two front wheels in recent years. Referring to fig. 1 and 2, for example, taiwan patent publication No. TWI346055 discloses an incline locking mechanism for a motor tricycle having two front wheels, which includes a motor 11, a driving lever 12 which is driven by the motor 11 and has a gear 120 at its end, a transmission gear 13 engaged with the gear 120 of the driving lever 12, an actuating lever 14 integrated with the transmission gear 13, and an oil pump 16 provided corresponding to the actuating lever 14 and connected to a hydraulic circuit 15. When the motor 11 is started, the driving rod 12 is driven to rotate, the gear 120 at the tail end of the driving rod 12 drives the transmission gear 13 to rotate, and finally, the actuating rod 14 integrated with the transmission gear 13 is driven to act on the oil pump 16 to provide driving oil pressure for the hydraulic circuit 15. The driving oil pressure is mainly used for a tilting mechanism locking device 181 and a front fork stroke stopping device 182. The cam 17 pivoted on the actuating lever 14 is driven by a mechanism to control whether the rear wheel brake 183 is interlocked. Furthermore, the TWI346055 patent discloses that an electronic control unit (not shown) can actuate the motor 11 according to the rocking angle and the vehicle speed of a tilting mechanism (not shown).

As described above, the above-mentioned TWI346055 patent mainly discloses that a lever mechanism is used to push the oil pump 16, and the cam 17 is only used as a means for interlocking the rear wheel brake 183. Further, the design of pushing the oil pump 16 by the lever mechanism is difficult in terms of space arrangement and has a problem of large size, and thus, it has an adverse effect on the miniaturization of the arrangement space of the entire motor tricycle.

Disclosure of Invention

[ problem to be solved by the invention ]

It is therefore an object of the present invention to provide a tiltable vehicle having two front wheels.

[ means of solving the problems ]

Thus, a tiltable vehicle having two front wheels according to the technology of item 1 of the present invention includes: a vehicle body; two front wheels which are arranged at the front side of the vehicle body and are arranged in parallel left and right; a one-to-one tilting mechanism and a pair of front shock absorbers, which are arranged between the vehicle body and the front wheels and are used for supporting the front wheels so that the front wheels can move up and down relative to the vehicle body; a locking device for locking the tilting mechanism and the pair of front shock absorbers or unlocking the front shock absorbers to limit up-down movement of the front wheels or to release the limit; an engine speed sensor for sensing an engine speed; a vehicle speed sensor for sensing a vehicle speed; a locking switch; and a controller electrically connected with the engine speed sensor, the vehicle speed sensor and the locking switch, wherein when the locking switch is pressed, the controller judges whether to control the locking device to switch from an unlocking state to a locking state according to the engine speed and the vehicle speed.

The tiltable vehicle with two front wheels according to claim 2 of the present invention, the locking device comprises a first tilting mechanism locking device corresponding to the tilting mechanism, a pair of front fork stroke locking devices corresponding to the pair of front shock absorbers, and an oil pressure driving device, wherein the oil pressure driving device is used for simultaneously driving the first tilting mechanism locking device and the pair of front fork stroke locking devices to lock or unlock.

The tiltable vehicle with two front wheels in the technology of the invention 3, the oil pressure driving device has a first motor driven by the controller, a cam driven by the first motor to eccentrically rotate, a roller wheel in rolling contact with the cam and driven by the cam to translate in a working stroke, a total pump, and an oil pressure push rod, wherein two ends of the oil pressure push rod are respectively pivoted to the roller wheel and extend into the total pump, and when the roller wheel translates in the working stroke, the oil pressure push rod can be driven to translate in the working stroke relative to the total pump so as to establish oil pressure or release oil pressure.

The tiltable vehicle with two front wheels of the invention of claim 4 further comprises a cam position sensor for sensing a rotation angle of the cam, wherein the rotation angle corresponding to zero of the total pump is defined to be about 0 ° and a zero position, the rotation angle is about 60 ° being an unlock position corresponding to the unlock state and the total pump is slightly oil pressure, and the rotation angle is about 120 ° being a lock position corresponding to the lock state.

The tiltable vehicle having two front wheels of the invention of claim 5, the controller comprising a first current sensor for sensing a first current value flowing through the first motor, the controller controlling the first motor to rotate forward to rotate the cam from the unlocked position to the locked position when determining to control the locking device to switch from the unlocked state to the locked state, and indicating that the first motor has been locked when the first current sensor senses that the first current value is greater than a first current threshold value, and the locking device having been switched to the locked state.

The tiltable vehicle with two front wheels according to claim 6 of the present invention further comprises a main switch electrically connected to the controller, wherein the hydraulic driving device further comprises a housing for accommodating the cam, the roller and the hydraulic ram, and a cover detachably disposed on the housing, wherein a blocking block is disposed on an inner surface of the cover, and when the cam is in the unlocking position, the controller controls the first motor to reverse until the cam rotation angle is less than 3 ° when the main switch is closed, indicating that the cam is zero, or when the first current sensor senses that the first current value is greater than the first current threshold value due to the cam being blocked by the blocking block, the cam is zero.

In the tiltable vehicle having two front wheels according to the technology of claim 7 of the present invention, the cam is maintained at the lock position regardless of whether the main switch is turned off or turned on with the cam at the lock position.

In the tiltable vehicle with two front wheels according to the technology of claim 8 of the present invention, when the cam is located at the locking position, the tiltable vehicle further comprises an unlocking switch electrically connected to the controller, when the engine speed is within a first engine speed interval representing that the engine is stationary and the vehicle speed is less than a first vehicle speed, and the locking switch is pressed, the controller controls the locking device to switch to the locking state, and then when the unlocking switch is pressed, the controller controls the locking device to switch to the unlocking state.

In the tiltable vehicle having two front wheels according to the invention of claim 9, the first engine speed interval is 900rpm or less, and the first vehicle speed is 10km/hr.

In the tiltable vehicle having two front wheels of the technology of claim 10 of the present invention, when the engine speed is in the second engine speed interval representing the engine idle speed and is less than the continuously variable automatic transmission disengaging speed, and the vehicle speed is less than the first vehicle speed, and the lock switch is pressed, the controller controls the lock device to shift to the lock state, and then when the unlock switch is pressed, the controller controls the lock device to shift to the unlock state.

The tiltable vehicle having two front wheels of the technology of claim 11 of the present invention, the second engine speed range being 900rpm to 3000rpm, the continuously variable automatic transmission disengage speed being 2000rpm, the first vehicle speed being 10km/hr.

In the tiltable vehicle with two front wheels according to the 12 th aspect of the present invention, when the engine speed is within the second engine speed range and the locking device is in the locked state, and the engine speed is increased to be greater than the engagement speed of the continuously variable transmission and the vehicle speed is greater than a second vehicle speed, the controller controls the locking device to automatically switch to the unlocked state.

The tiltable vehicle having two front wheels of the technology of claim 13 of the present invention, the continuously variable automatic transmission combining rotational speed is 2200rpm, and the second vehicle speed is 2km/hr.

In the tiltable vehicle with two front wheels according to the 14 th aspect of the invention, when the engine speed is within the third engine speed interval representing the riding of the vehicle, the controller controls the lock switch to be disabled if the lock device is in the unlock state, and controls the lock device to automatically switch to the unlock state if the lock device is in the lock state.

In the tiltable vehicle having two front wheels according to claim 15 of the present invention, the third engine speed interval is 3000rpm or more.

In the 16 th aspect of the invention, the engine speed sensor transmits the engine speed to an engine control unit, and the engine control unit transmits the engine speed to the controller via a communication interface.

In the invention according to claim 17, the tiltable vehicle having two front wheels, the vehicle speed sensor transmits the vehicle speed to an anti-lock braking system, and the anti-lock braking system transmits the vehicle speed to the controller via the communication interface.

The tiltable vehicle with two front wheels of the 18 th aspect of the present invention further comprises a disc fixed on the tilting mechanism, the locking device comprising a second tilting mechanism locking device corresponding to the tilting mechanism and having a caliper, a pair of front fork travel locking devices corresponding to the pair of front shock absorbers, and an oil pressure driving device, wherein the caliper of the second tilting mechanism locking device is used for releasably clamping the disc, and the oil pressure driving device is used for driving the pair of front fork travel locking devices to lock or unlock.

The tiltable vehicle with two front wheels of the 19 th aspect of the present invention, the hydraulic driving device has a first motor driven by the controller, a cam driven by the first motor to eccentrically rotate, a roller in rolling contact with the cam to be driven by the cam to translate in a working stroke, a total pump, and a hydraulic push rod, wherein two ends of the hydraulic push rod are respectively pivoted to the roller and extend into the total pump, and when the roller translates in the working stroke, the hydraulic push rod can be driven to translate in the working stroke relative to the total pump to establish or release the hydraulic pressure.

The tiltable vehicle with two front wheels of the invention of claim 20, the hydraulic driving device further having a cam position sensor for sensing a rotation angle of the cam, the rotation angle corresponding to the oil pressure of the master pump being defined as zero being about 0 ° and a zero position, the rotation angle being about 60 ° being an unlock position corresponding to the unlock state and the master pump having a slight oil pressure, the rotation angle being about 120 ° being a lock position corresponding to the lock state.

The tiltable vehicle having two front wheels of the invention of claim 21, the controller comprising a first current sensor for sensing a first current value flowing through the first motor, the controller controlling the first motor to rotate forward to rotate the cam from the unlocked position to the locked position when determining to control the front fork stroke locking device to switch from the unlocked state to the locked state, and indicating that the first motor has been blocked when the first current sensor senses that the first current value is greater than a first current threshold value, and the front fork stroke locking device having switched to the locked state.

The tiltable vehicle having two front wheels of claim 22 further comprising a second motor driven by the controller, the controller comprising a second current sensor for sensing a second current value flowing through the second motor, the controller driving the second motor to rotate forward to drive the caliper to clamp the disc until the second current sensor senses the second current value being greater than a second current threshold value, indicating that the second motor has rotated forward to lock, and the second tilting mechanism locking device has shifted to the locked state, and then the controller driving the second motor to rotate backward until the second current sensor senses the second current value being less than a third current threshold value, indicating that the caliper has released the disc, and the second tilting mechanism locking device has shifted to the unlocked state, wherein the third current threshold value is less than the second current threshold value.

[ Effect of the invention ]

The invention has the following effects by the technology of the 1 st item: (1) When the locking switch is pressed by a user, the controller can judge whether to control the locking device to switch from the unlocking state to the locking state according to the engine rotating speed and the vehicle speed; (2) When the tiltable vehicle with two front wheels is locked and then the engine speed is increased to a riding state higher than 3000rpm, the controller controls the locking device to be automatically unlocked, so that system misoperation caused by failure of the vehicle speed sensor can be avoided; (3) The unlocked position of the cam helps to shorten the locking and unlocking times; (4) If the user turns OFF the main switch (Key OFF), the controller controls the first motor to rotate reversely until the cam is reset to zero, so that the oil pressure is zero, and the oil pressure driving device is maintained and replaced; (5) If the main switch is turned ON (Key ON) when the locking device is in the locked state, the first motor and the cam remain stationary, or if the main switch is turned ON when the locking device is not in the locked state, the first motor and the cam rotate to the unlocking position, which can help to shorten the working stroke and shorten the driving time; (6) The hydraulic driving device directly pushes the master pump by means of the cam and other elements, thereby ensuring the miniaturization of the mechanism and reducing the cost.

Drawings

Other features and advantages of the invention will be apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram illustrating a prior art tilt lock mechanism for a motor tricycle having two front wheels;

FIG. 2 is a perspective view illustrating some of the components of the tilt lock mechanism of FIG. 1;

FIG. 3 is a perspective view illustrating some of the elements of a first embodiment of the tiltable vehicle with two front wheels of the present invention;

FIG. 4 is a functional block diagram illustrating the locking device, the controller, the engine speed sensor, the vehicle speed sensor, the main switch, the locking switch, and the unlocking switch of the first embodiment;

fig. 5 is a side view illustrating the oil pressure drive apparatus in the first embodiment;

fig. 6 is a sectional view illustrating the oil pressure driving apparatus;

fig. 7 is a side view illustrating that a stopper is provided on an inner surface of a cover of the oil pressure driving apparatus;

fig. 8 is a side view illustrating the rotation of the cam of the oil pressure drive apparatus to the zero position;

FIG. 9 is a side view illustrating the cam rotated to an unlocked position;

FIG. 10 is a side view illustrating the cam rotated to a locked position;

FIG. 11 is a flow chart illustrating a tilt lock control scenario for a tiltable vehicle having two front wheels of the present invention;

FIG. 12 is a perspective view illustrating a portion of the elements of a second embodiment of the tiltable vehicle with two front wheels of the present invention; a kind of electronic device with high-pressure air-conditioning system

Fig. 13 is a functional block diagram illustrating the lock device, the controller, the engine speed sensor, the vehicle speed sensor, the main switch, the lock switch, and the unlock switch in the second embodiment.

List of reference numerals

Tiltable vehicle with two front wheels

20.car body

21L, 21R two front wheels

22 engine speed sensor

23 speed sensor

24-disc

25L and 25R front shock absorber

26 locking device

261 hydraulic driving device

2610. Shell

2611. First motor

2612. Cam

2613. Roller

2614. Subrack pump

2615 & hydraulic push rod

2616 cam position sensor

2617. Cover

2618 blocking block

262 first tilting mechanism locking device

263 front fork travel locking device

264 second tilting mechanism locking device

2641 callipers

265 second motor

27 tilting mechanism

28. Controller

280. Micro Control Unit (MCU)

281 first current sensor

282 first motor driving circuit

283 second current sensor

284 second motor driving circuit

291 Main switch

292 locking switch

293, unlocking switch

30-332. Steps.

Detailed Description

Referring to fig. 3 and 4, a first embodiment of the tiltable vehicle 2 with two front wheels of the present invention includes a vehicle body 20, two

front wheels

21L, 21R, a tilting mechanism 27, a pair of

front shock absorbers

25L, 25R, a locking device 26, an engine speed sensor 22, a vehicle speed sensor 23, a main switch 291, a locking switch 292, an unlocking switch 293, and a controller 28. Wherein the engine speed sensor 22, the vehicle speed sensor 23, the main switch 291, the lock switch 292, and the unlock switch 293 are all electrically connected to the controller 28. In the first embodiment, the engine speed sensor 22 is configured to sense an engine speed and directly transmit the engine speed to the controller 28; the vehicle speed sensor 23 is used for sensing a vehicle speed and directly transmitting the vehicle speed to the controller 28. It should be specifically noted that, in the variation of the first embodiment, the engine speed sensor 22 may first transmit the engine speed to an engine control unit (ECU, not shown), and then the engine control unit transmits the engine speed to the controller 28 via the communication interface; the vehicle speed sensor 23 may transmit the vehicle speed to an anti-lock brake system (ABS, not shown) and then the anti-lock brake system transmits the vehicle speed to the controller 28 via the communication interface; the communication interface may be, for example, a Controller Area Network (CAN) bus.

The

front wheels

21L, 21R are provided on the front side of the vehicle body 20 and are juxtaposed right and left.

The tilting mechanism 27 and the pair of

front shock absorbers

25L, 25R are provided between the vehicle body 20 and the

front wheels

21L, 21R, and serve to support the

front wheels

21L, 21R so that the

front wheels

21L, 21R can move up and down with respect to the vehicle body 20.

The locking device 26 is used to lock the tilting mechanism 27 and the pair of

front shock absorbers

25L, 25R, or unlock the

front wheels

21L, 21R to restrict upward and downward movement, or unlock the restriction. In the first embodiment, the locking device 26 includes a first tilting mechanism locking device 262 corresponding to the tilting mechanism 27 and a pair of front fork stroke locking devices 263 corresponding to the pair of

front shock absorbers

25L, 25R, and an oil pressure driving device 261.

Referring to fig. 4 to 8, the hydraulic driving device 261 is used for simultaneously driving the first tilting mechanism locking device 262 and the pair of front fork stroke locking devices 263 to lock or unlock, and has a housing 2610, a cover 2617, a first motor 2611 driven by the controller 28, a cam 2612 eccentrically rotated by the first motor 2611, a roller 2613 in rolling contact with the cam 2612 and driven by the cam 2612 to translate in a working stroke, a total pump 2614, a hydraulic ram 2615, and a cam position sensor 2616 for sensing a rotation angle of the cam 2612. The housing 2610 accommodates the cam 2612, the roller 2613, the hydraulic ram 2615, and other components.

The two ends of the hydraulic push rod 2615 are respectively pivoted to the roller 2613 and extend into the master pump 2614, and when the roller 2613 translates in the working stroke, the hydraulic push rod 2615 can be driven to translate in the working stroke relative to the master pump 2614 so as to establish hydraulic pressure or release hydraulic pressure.

In the first embodiment, the cover 2617 is detachably disposed on the housing 2610, and has a blocking block 2618 on an inner surface.

The tiltable vehicle 2 with two front wheels of the present invention is mainly characterized in that the controller 28 can determine whether to control the locking device 26 to switch from an unlocked state to a locked state according to the engine speed and the vehicle speed when the locking switch 292 is pressed by a user.

In the first embodiment, the controller 28 includes a first current sensor 281 for sensing a first current value flowing through the first motor 2611, a first motor driving circuit 282 for driving the first motor 2611 to operate, and a Micro Control Unit (MCU) 280 electrically connected to the first current sensor 281, the first motor driving circuit 282 and the cam position sensor 2616.

Referring to fig. 4, 6, 8, 9 and 10, in the first embodiment, the rotation angle of the cam 2612 corresponding to zero oil pressure of the master pump 2614 is defined to be about 0 ° and a zero position (as shown in fig. 8), the rotation angle is about 60 ° to be an unlock position corresponding to the unlock state (as shown in fig. 9), and the master pump 2614 has a slight oil pressure, and the rotation angle is about 120 ° to be a lock position corresponding to the lock state (as shown in fig. 10).

In the first embodiment, when the controller 28 determines to control the locking device 26 to switch from the unlocked state to the locked state, the first motor 2611 is controlled to rotate forward to rotate the cam 2612 from the unlocked position to the locked position, and when the first current sensor 281 senses that the first current value is greater than a first current threshold value, it indicates that the first motor 2611 has locked up and the locking device 26 has switched to the locked state.

In the case where the cam 2612 is at the unlock position, if the user turns OFF the main switch 291 (Key OFF), the controller 28 controls the first motor 2611 to reverse until the cam 2612 is turned by less than 3 °, indicating that the return to zero is completed, or the first current sensor 281 senses that the first current value is greater than the first current threshold value because the cam 2612 is stopped by the stop block 2618 of the cover 2617 of the hydraulic driving device 261. In addition, with the cam 2612 in the locked position, the cam 2612 remains in the locked position regardless of whether the main switch 291 is closed or open (Key ON).

Referring to fig. 4 and 11, the tilting lock control scenario of the tiltable vehicle 2 with two front wheels of the present invention. As shown in step 30 of fig. 11, the user first turns ON the main switch 291 to turn ON the power (Key ON) of the tiltable vehicle 2 having two front wheels.

The controller 28 determines that the engine speed is within a first engine speed interval representing engine rest, as shown in step 310, wherein the first engine speed interval is 900rpm or less in the present first embodiment. Next, as shown in step 311, the controller 28 determines that the vehicle speed is less than a first vehicle speed, which in the first embodiment is 10km/hr, and the lock switch 292 is pressed by the user. The controller 28 then controls the locking device 26 to transition to the locked state, as shown in step 312. Then, the user presses the unlock switch 293, as shown in step 313, whereupon the controller 28 then controls the locking device 26 to transition to the unlocked state, as shown in step 314.

The controller 28 determines that the engine speed is within a second engine speed interval representing engine Idle (Idle), as shown in step 320, wherein the second engine speed interval is 900rpm to 3000rpm in the present first embodiment. Next, as shown in step 321, the controller 28 determines that the lock switch 292 is pressed and that the engine speed is less than a continuously variable automatic transmission (CVT) release speed, which in the present first embodiment is 2000rpm, and that the vehicle speed is less than the first vehicle speed. Then, the controller 28 controls the locking device 26 to switch to the locked state as shown in step 322, and then, the user presses the unlocking switch 293 as shown in step 323, whereupon, next, the controller 28 controls the locking device 26 to switch to the unlocked state as shown in step 324. Alternatively, as shown in step 325, when the engine speed is within the second engine speed range and the locking device 26 is in the locked state, the controller 28 determines that the engine speed is increased to be greater than a continuously variable automatic transmission coupling speed and the vehicle speed is greater than a second vehicle speed, wherein in the first embodiment, the continuously variable automatic transmission coupling speed is 2200rpm and the second vehicle speed is 2km/hr, and then as shown in step 326, the controller 28 controls the locking device 26 to automatically switch to the unlocked state.

The controller 28 determines that the engine speed is within a third engine speed interval representing vehicle riding, wherein the third engine speed interval is 3000rpm or more in the present first embodiment, as shown in step 330. Then, as shown in step 331, if the controller 28 determines that the locking device 26 is in the unlocked state, the locking switch 292 is deactivated, or if the controller 28 determines that the locking device 26 is in the locked state, the locking device 26 is controlled to automatically switch to the unlocked state.

Referring to fig. 12 and 13, the main difference between the second embodiment of the tiltable vehicle 2 with two front wheels and the first embodiment is that in the second embodiment, the tiltable vehicle 2 with two front wheels further includes a disc 24 fixed on the tilting mechanism 27, and the hydraulic driving device 261 is only used for driving the pair of front fork stroke locking devices 263 to lock or unlock, so that the locking device 26 does not include the first tilting mechanism locking device 262 in the first embodiment, but also includes a second motor 265, and a second tilting mechanism locking device 264 corresponding to the tilting mechanism 27. The second tilt mechanism locking device 264 has a caliper 2641 and gear sets, pushers, etc. not shown. The second motor 265 rotates to drive the gear set and the pushing member in sequence, so as to drive the caliper 2641 to clamp the disc 24 releasably.

In addition, in the second embodiment, the controller 28 further includes a second current sensor 283 for sensing a second current value flowing through the second motor 265, and a second motor driving circuit 284. When the controller 28 determines to control the second tilting mechanism locking device 264 to switch from the unlocked state to the locked state, the second motor driving circuit 284 is used to drive the second motor 265 to rotate forward so as to drive the caliper 2641 to clamp the disk 25 until the second current sensor 283 senses that the second current value is greater than a second current threshold value, which indicates that the second motor 265 has rotated forward to lock and the second tilting mechanism locking device 264 has switched to the locked state. Conversely, when the controller 28 determines to control the second tilting mechanism locking device 264 to switch from the locked state to the unlocked state, the second motor driving circuit 284 is used to drive the second motor 265 to reverse until the second current sensor 283 senses that the second current value is less than a third current threshold value, which is less than the second current threshold value, indicating that the caliper 2641 has released the disc 25, and the second tilting mechanism locking device 264 has switched to the unlocked state.

In summary, the tiltable vehicle 2 with two front wheels of the present invention has at least the following advantages and effects: (1) When the user presses the lock switch 292, the controller 28 can determine whether to control the lock device 26 to switch from the unlock state to the lock state according to the engine speed and the vehicle speed; (2) When the tiltable vehicle 2 with two front wheels is locked and then the engine speed is increased to a riding state higher than 3000rpm, the controller 28 controls the locking device 26 to be automatically unlocked, so that system misoperation caused by failure of the vehicle speed sensor 23 can be avoided; (3) The unlocked position of the cam 2612 helps to shorten lock and unlock times; (4) If the user turns OFF the main switch 291 (Key OFF), the controller 28 controls the first motor 2611 to rotate reversely until the cam 2612 is completely zeroed, so that the oil pressure is zero, thereby facilitating maintenance and replacement of the oil pressure driving device 261; (5) If the main switch 291 is turned ON (Key ON) with the locking device 26 in the locked state, the first motor 2611 and the cam 2612 remain stationary, or if the main switch 291 is turned ON with the locking device 26 not in the locked state, the first motor 2611 and the cam 2612 are turned to the unlocked position, which can help to shorten the working stroke to shorten the driving time; (6) The hydraulic driving device 261 directly pushes the master pump 2614 by means of the cam 2612 and other elements, so that the mechanism can be ensured to be miniaturized and the cost can be reduced; therefore, the object of the present invention can be achieved.

The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims and their equivalents, and all such modifications are intended to fall within the scope of the invention.

Claims

1. A tiltable vehicle having two front wheels, comprising:

a vehicle body;

the two front wheels are arranged on the front side of the vehicle body and are arranged in parallel left and right;

the tilting mechanism and the pair of front shock absorbers are arranged between the vehicle body and the front wheels and are used for supporting the front wheels so that the front wheels can move up and down relative to the vehicle body;

a locking device for locking the tilting mechanism and the front shock absorber or unlocking the front shock absorber so as to limit the up-down movement of the front wheel or release the limit;

an engine speed sensor for sensing an engine speed;

a vehicle speed sensor for sensing a vehicle speed;

a locking switch;

the controller is electrically connected with the engine rotating speed sensor, the vehicle speed sensor and the locking switch, wherein when the locking switch is pressed down, the controller judges whether to control the locking device to be switched from an unlocking state to a locking state according to the engine rotating speed and the vehicle speed; a kind of electronic device with high-pressure air-conditioning system

And the unlocking switch is electrically connected with the controller, when the engine rotating speed is in a first engine rotating speed interval representing engine idle speed, the vehicle speed is smaller than a first vehicle speed, and the locking switch is pressed, the controller controls the locking device to be switched to the locking state, then when the unlocking switch is pressed, the controller controls the locking device to be switched to the unlocking state, when the engine rotating speed is in a second engine rotating speed interval representing engine idle speed, and is smaller than a disengagement rotating speed of a continuously variable automatic transmission, the vehicle speed is smaller than the first vehicle speed, and the locking switch is pressed, the controller controls the locking device to be switched to the locking state, and then when the unlocking switch is pressed, the controller controls the locking device to be switched to the unlocking state.

2. The tiltable vehicle having two front wheels as in claim 1, wherein the locking means comprises a first tilting mechanism locking means corresponding to the tilting mechanism, a pair of front fork stroke locking means corresponding to the front shock absorber, and an oil pressure driving means for simultaneously driving the first tilting mechanism locking means and the front fork stroke locking means to lock or unlock.

3. The tiltable vehicle with two front wheels as claimed in claim 2, wherein the oil pressure driving device has a first motor driven by the controller, a cam eccentrically rotated by the first motor, a roller wheel rolling contact with the cam to be driven by the cam to translate in a working stroke, a total pump, and an oil pressure pushing rod, both ends of the oil pressure pushing rod are respectively pivoted to the roller wheel and extend into the total pump, and when the roller wheel translates in the working stroke, the oil pressure pushing rod is driven to translate in the working stroke relative to the total pump to establish oil pressure or release oil pressure.

4. The tiltable vehicle having two front wheels as claimed in claim 3, wherein the oil pressure driving apparatus further has a cam position sensor that senses a rotation angle of the cam, the rotation angle corresponding to the oil pressure of the total pump being defined as zero is 0 ° and a zero position, the rotation angle being 60 ° at an unlock position corresponding to the unlock state and the total pump being slightly oil pressure, the rotation angle being 120 ° at a lock position corresponding to the lock state.

5. The tiltable vehicle having two front wheels of claim 4, wherein the controller includes a first current sensor for sensing a first current value flowing through the first motor, the first motor is controlled to rotate forward to rotate the cam from the unlocked position to the locked position when the controller determines that the locking device is to be controlled to transition from the unlocked state to the locked state, and the first motor is indicated to have been blocked when the first current sensor senses that the first current value is greater than a first current threshold, and the locking device is transitioned to the locked state.

6. The tiltable vehicle having two front wheels as in claim 5, further comprising a main switch electrically connected to the controller, wherein the oil pressure driving apparatus further has a housing accommodating the cam, the roller, and the oil pressure push rod, and a cover detachably provided on the housing, a blocking block is provided on an inner surface of the cover, and the controller controls the first motor to reverse until the cam is completed when the main switch is turned off in the case that the cam is in the unlocking position, or the cam is completed when the first current sensor senses that the first current value is greater than the first current threshold value due to the blocking block of the cam.

7. The tiltable vehicle having two front wheels of claim 6, wherein the cam is maintained in the locked position with the cam in the locked position regardless of whether the main switch is turned off or turned on.

8. The tiltable vehicle with two front wheels as in claim 1, wherein the first engine speed interval is 900rpm or less and the first vehicle speed is 10km/hr.

9. The tiltable vehicle with two front wheels of claim 1, wherein the second engine speed interval is 900rpm to 3000rpm, the continuously variable automatic transmission disengage speed is 2000rpm, and the first vehicle speed is 10km/hr.

10. The tiltable vehicle having two front wheels as in claim 1, wherein the controller controls the locking device to automatically transition to the unlocked state when the engine speed is increased to be greater than a continuously variable automatic transmission combined speed and the vehicle speed is greater than a second vehicle speed in the locked state while the engine speed is within the second engine speed interval.

11. The tiltable vehicle with two front wheels of claim 10, wherein the continuously variable automatic transmission has a combined rotational speed of 2200rpm and the second vehicle speed is 2km/hr.

12. The tiltable vehicle having two front wheels of claim 10, wherein the controller controls the lock switch to fail if the lock device is in the unlocked state and controls the lock device to automatically transition to the unlocked state if the lock device is in the locked state when the engine speed is within a third engine speed interval representing a vehicle being ridden.

13. The tiltable vehicle with two front wheels as in claim 12, wherein the third engine speed interval is 3000rpm or more.

14. The tiltable vehicle with two front wheels of claim 1, wherein the engine speed sensor transmits the engine speed to an engine control unit, and the engine control unit transmits the engine speed to the controller via a communication interface.

15. The tiltable vehicle with two front wheels of claim 1, wherein the vehicle speed sensor transmits the vehicle speed to an anti-lock brake system, and the anti-lock brake system transmits the vehicle speed to the controller via a communication interface.

16. The tiltable vehicle having two front wheels as in claim 1, further comprising a disc secured to the tilting mechanism, the locking device comprising a second tilting mechanism locking device corresponding to the tilting mechanism and having a caliper, a pair of front fork travel locking devices corresponding to the front shock absorber, and an oil pressure driving device, wherein the caliper of the second tilting mechanism locking device is configured to releasably clamp the disc, and the oil pressure driving device is configured to drive the front fork travel locking devices to lock or unlock.

17. The tiltable vehicle with two front wheels as claimed in claim 16, wherein the oil pressure driving device has a first motor driven by the controller, a cam eccentrically rotated by the first motor, a roller wheel rolling contact with the cam to be driven by the cam to translate in a working stroke, a total pump, and an oil pressure pushing rod, both ends of the oil pressure pushing rod are respectively pivoted to the roller wheel and extend into the total pump, and when the roller wheel translates in the working stroke, the oil pressure pushing rod is driven to translate in the working stroke relative to the total pump to establish oil pressure or release oil pressure.

18. The tiltable vehicle having two front wheels as in claim 17, wherein the oil pressure driving apparatus further has a cam position sensor that senses a rotation angle of the cam, the rotation angle corresponding to the oil pressure of the master pump being defined as zero being 0 ° and a zero position, the rotation angle being 60 ° at an unlock position corresponding to the unlock state and the master pump being slightly oil pressure, the rotation angle being 120 ° at a lock position corresponding to the lock state.

19. The tiltable vehicle having two front wheels of claim 18, wherein the controller includes a first current sensor to sense a first current value flowing through the first motor, the first motor is controlled to rotate forward to rotate the cam from the unlocked position to the locked position when the controller determines that the fork stroke locking device is to be controlled to transition from the unlocked state to the locked state, and the first motor is locked when the first current sensor senses that the first current value is greater than a first current threshold value, and the fork stroke locking device is transitioned to the locked state.

20. The tiltable vehicle having two front wheels of claim 16, wherein the locking apparatus further comprises a second motor that is drivable by the controller, the controller comprising a second current sensor for sensing a second current value flowing through the second motor, the controller being operable to drive the second motor in a forward direction to cause the caliper to clamp the disc until the second current sensor senses the second current value being greater than a second current threshold, indicating that the second motor has been rotated forward to a locked state, and the second tilting mechanism locking apparatus has been transitioned to the locked state, and then the controller being operable to drive the second motor in a reverse direction until the second current sensor senses the second current value being less than a third current threshold, indicating that the caliper has been released from the disc, and the second tilting mechanism locking apparatus has transitioned to the unlocked state, wherein the third current value is less than the third threshold.