KR102528682B1 - Vehicle kickstand and how it works - Google Patents

Abstract

The present invention relates to a kickstand (1) for a vehicle, preferably a two-wheeled vehicle such as a motorcycle, motor scooter, bicycle, electric bicycle, etc., the kickstand comprising: a base (2) fixed to a frame (T) of the vehicle; It includes a motor 3 and two legs 4, and the legs correspond to a stop state of the kickstand in which the legs 4 do not contact the ground and an operating state in which the legs 4 contact the ground. It rotates relative to the base 2 along a working path between two limiting positions, said at least one leg 4, preferably both legs 4, being telescopically extendable and retractable and having a cylindrical body 41 and a bar 42 that slides within the cylindrical body 41, wherein the kickstand 1 includes a hydraulic system 5 that drives the bar 42 relative to the body 41, The path from the stationary state to the operating state has two parts, a first working path part in which the drive motor 3 drives the legs or legs 4 to rotate them relative to the base and the drive hydraulic system 5 is the bar or driving the bars 42 to divide it into a second actuating path portion extending from the cylindrical body 41; The invention also relates to a method for operating the kick stand.

Description

Vehicle kickstand and how it works

The present invention relates to a kickstand for a vehicle, preferably a kickstand for a motorcycle, a motor scooter, a bicycle, an electric bicycle, and the like, and a method for operating the kickstand.

In the prior art, it is known to balance a two-wheeled vehicle in a parked state by means of a kickstand connected to the frame of the vehicle for turning.

In its simplest form, the kickstand takes the shape of an inverted U and is operated manually.

In some more developed embodiments, often used for particularly heavy vehicles or when the force a user can apply is limited, an electrically operated kickstand is provided; Simply put, in this case the U-shaped stand is powered by a user-controlled electric motor.

While the automatic solution is useful, it is not free from drawbacks.

According to one of the above disadvantages, the known kickstand has an actuating path divided into two parts. The U-shaped arm rotates from the collapsed position until it reaches a substantially vertical position or an intermediate position in which the vehicle is partially lifted (first path portion); From this intermediate position the U-shaped arm continues to rotate (second path portion) until the vehicle abuts a fixed pawl against the (parked) frame, which is tightly balanced.

For heavy vehicles with electric kickstands (eg grand touring motorcycles), a very powerful motor must be provided as the electric motor requires significant power to drive the kickstand, resulting in significant costs.

According to another disadvantage, the bearing structure of the kickstand (an attachment having a U shape and attached to the frame and the above The frame in the area fixed to the kickstand) must be oversized.

As a result, the electric kickstand is often broken or damaged.

Another disadvantage of the electric kickstand is found when the vehicle is parked on an uneven surface. In this case, a problem may arise when one of the U-shaped arms contacts the ground before the other. When the intermediate position is reached, all the weight of the vehicle is applied only to the U-shaped arm in contact with the ground (or, in general, the weight is not equally applied to the two arms), and thus the arm risks being deformed and destroyed.

An object of the present invention is to provide a kickstand for a vehicle that overcomes the above problems, preferably a two-wheeled vehicle such as a motorcycle, motor scooter, bicycle, electric bicycle, and the like.

Another object of the present invention is to provide a kickstand for a vehicle which avoids mechanical overload, especially with respect to the support structure.

Another object is to provide a vehicular kickstand that is robust, durable and functional.

Another object is to provide a vehicle kickstand that is very simply installed by replacing the prior art kickstand for a prior art vehicle.

Another object is to provide a kickstand for vehicles capable of preventing vehicle theft.

Yet another object of the present invention is a kick that, in addition to meeting at least one or some of the above objects, is provided and can be mounted as a kit of equipment or parts on a prior art motorcycle that is not factory arranged to be fitted with a motorized kickstand. to provide a stand.

The above and other objects are achieved by a vehicle kick stand according to the attached claim 1.

The present invention relates primarily to a kickstand for a vehicle, preferably a two-wheeled vehicle such as a motorcycle, motor scooter, bicycle, electric bicycle, etc., the kickstand comprising a base fixed to a frame of the vehicle, a drive motor and two legs. and the legs rotate relative to the base along an operating path between two limiting positions corresponding to an operating state of the kickstand in which the legs do not contact the ground and an operating state in which the legs contact the ground.

The at least one leg, preferably both legs, can be extended and retracted in a telescopic manner since it comprises a cylindrical body and a bar that slides within the cylindrical body.

The kickstand includes a hydraulic system that drives the bar against the body.

In addition, the working path has two parts from the working state to the working state, a first working path part in which a drive motor drives a leg or legs to rotate with respect to a base, and a driving hydraulic system drives a bar or bars in a cylindrical shape. It is divided into a second actuation path portion extending from the body.

An automatic system for balancing the path of extension of said at least one bar from a cylindrical body is provided, said automatic system being a function of the distance between the position of the bar fully retracted into the cylindrical body and the position or area of support of said bar on the ground. to determine the extension path of each bar as , to keep the longitudinal vertical center plane of the vehicle substantially perpendicular to the ground.

It is possible to provide an embodiment variant other than the above general embodiment.

According to one embodiment, each bar consists of or is controlled by a rod of a hydraulic cylinder, each hydraulic cylinder is connected to a pressurized fluid transfer through a shared distribution chamber, and an automatic balancing system is always open between the two cylinders. It consists of a distribution chamber forming a communication passage.

In this case, the balancing system is always open and communicates between the chambers of the two cylinders having a rod formed as a corresponding bar or controlling the bar, and as compensation, the fluid pressure is always constant and the same physical effect is guaranteed.

According to a variant of the above embodiment, each hydraulic cylinder provided for each hydraulic cylinder and/or each bar and connected separately and independently with the pressurized fluid delivery, and the pressure of the bar against the ground and/or inside the bar A sensor is provided for a fluid pressure of , the output of the sensor being connected to a control unit which compares the signals of the sensors with each other and the pressurized fluid to the first cylinder having a pressure value exceeding a predetermined threshold. Stop flow and supply pressurized fluid to the other cylinder until the pressure value measured for the other cylinder is substantially equal to the value measured for the first cylinder and/or exceeds the threshold value.

This variant is advantageous when an electromechanical linear actuator or similar actuator is used instead of a hydraulic cylinder that controls the bar or constitutes the bar by means of a rod. In this case, since direct communication is impossible, the state of the bar arranged on the ground and the corresponding pressure applied to the ground are sensed to supply power to the motor of the electromechanical linear actuator and minimize the difference between the above values, that is, along the vertical arrangement It keeps the vehicle perfectly vertical, i.e. balanced against gravity.

According to a variant of the system, the kickstand protrudes towards the ground from an active resting position in which the kickstand is substantially folded with respect to the underside of the vehicle in two path parts, and the kickstand is protruded, for example by means of a detent respectively. Two different methods can be provided for actuating the kickstand in relation to movement in the first path part which is rotated to a fixed operating position. In this variant, the rotary motion is generated by an electromechanical actuator or optionally by a hydraulic actuator.

The second part of the actuation path, which provides for extending the leg by deploying the bar, can be formed by two alternatives: using a hydraulic system or an electromechanical system.

Two preferred embodiments are respectively:

- a rotational motion of the kickstand obtained from a stationary state to a working state and from an operating state to a stationary state by an electromechanical actuator and a combination of the extension action, balancing the extension in hydraulic form according to the condition of the ground; or

- a rotational motion of the kickstand obtained from the resting state to the working state and from the working state to the resting state by the hydraulic actuator and a combination of the extending action balancing the extension in hydraulic form according to the condition of the ground;

provides

Although the above embodiments are not the preferred embodiment, other variations are possible using electromechanical actuators for the path portions of the kickstand or using a combination of hydraulically actuated rotation and extension actuated by electromechanical actuators. possible.

Regarding the first variant providing a combination of rotary actuation with an electromechanical actuator and extension with a hydraulic system, the hydraulic system can be driven to supply pressurized fluid from a motor of the same electromechanical actuation for rotation.

The description of the preferred embodiment reveals additional details and variations.

The second variant, based entirely on hydraulic actuation, is advantageous because the kickstand can be manufactured in the form of equipment that can be fitted even on vehicles that are not equipped with a kickstand of this type in the factory.

From the following description of the embodiment, it can be seen that the kickstand can be manufactured as a simple kit or piece of equipment which in this case requires a number of mechanical and electrical interfaces between the kickstand, i.e. the control and actuation system, and the vehicle, facilitating retrofit installation. and increase adaptability to different models of vehicles.

Accordingly, the present invention also relates to a kick stand manufactured as an adaptation kit or equipment and according to one or more of the features described above.

The invention also relates to a method of operating a kickstand for a vehicle, wherein the kickstand does not protrude beyond the underside of the vehicle to such an extent that it forms, in addition to the support provided by the wheels, at least an additional support for the vehicle on the ground and vice versa. performing at least one first movement step for providing rotational movement from the operating rest position to an operating position projecting beyond the underside of the vehicle, and from the operating stop step in addition to the first movement step:

- the legs do not have an operating state other than the first movement phase, in which the legs are rotated relative to the base by means of a drive motor and the hydraulic system is translated;

- a second step is provided for providing an extension of each leg of the kickstand towards the fulcrum on the ground, measuring the pressure developed by each leg on the ground and comparing said pressure to a predetermined pressure threshold and/or Each leg extends independently from the other leg the distance required to reach the support on the ground by comparing the pressure values sensed for each leg.

According to one embodiment of the method, the extension of the leg is carried out hydraulically by providing an actuation cylinder which moves an extension bar sliding relative to the leg, wherein the actuation cylinder connected with the two legs is hydraulically coupled to one another.

According to a variant of the method, the extension of the legs is performed electromechanically by providing linear cylinders which move extension bars sliding relative to the legs, the actuators being individually and independently as a function of the pressure differential of each bar on the ground. This is performed by a control unit (CU) to minimize or eliminate the pressure difference and/or to keep the pressure difference below a predetermined threshold.

Additional advantageous and optional features are the subject of the dependent claims, which are provided as an integral part of the present description.

The above and other features and advantages of the present invention will become more apparent from the following description of some embodiments shown in the accompanying drawings.
1 and 2 are bottom and side cross-sectional views, respectively, of the kickstand in a resting state and viewed along plane AA.
3, 4 and 5 are bottom, side and front views of the kickstand in an intermediate operating state.
6, 7 and 8 are a bottom view, a side view and a front view of the kickstand in a final operating state.
9 and 10 are views showing the kickstand in a final operating state on a flat ground (FIG. 9) and an uneven ground (FIG. 10).
Figure 11 is a side view of the kickstand during a manually actuated phase.
FIG. 12 is a block diagram illustrating an embodiment of a kickstand in the form of a "retrofit" that can be applied to an existing vehicle in which the kickstand according to the present invention is not provided at the factory.

Referring to the embodiment shown in the attached FIGS. 1 and 2, a kickstand 1 for a vehicle of the present invention, preferably a two-wheeled vehicle such as a motorcycle, a motor scooter, a bicycle, an electric bicycle, and the like is shown, on the ground Two legs 4 arranged are provided.

It should be noted that, in a simplified embodiment, the kickstand of the present invention has the form of a so-called "side stand" comprising only one leg 4, the following description pertaining to the form with two legs. but similar in simplified form.

Referring to FIGS. 1 and 2 , the kickstand 1 generally includes a base 2 fixed to a frame of a vehicle.

The base 2 has at least means fixed to the frame, such as screw connections (bolts, nuts, screws) for connecting the base to the frame T, which is shown simplified as a plate in the drawings.

In this embodiment, the kick stand 1 includes two legs 4 that rotate relative to the base 2 along an operating path between two limiting positions.

1 and 2 show a first limiting position corresponding to a non-operational state (or a non-use state) of the kickstand 1, and the legs 4 are folded and arranged on the ground T or not in contact. can not do it.

6 to 8 show the kickstand 1 in a second limiting position corresponding to a "final" operating state (distinct from the "intermediate" operating state and explained in more detail in the following description), in which case Legs 4 contact the ground and support the parked vehicle.

Between the limit position (stop position in Figs. 1 and 2) and the final operating position in Figs. 6 to 8, the leg 4 passes through an intermediate position corresponding to the intermediate operating state in Figs. 3 to 5.

Preferably, with regard to the vehicle-mounted kickstand 1, the legs 4 are arranged horizontally in the resting state of operation, whereas they are arranged substantially vertically in the intermediate and final operating positions.

As shown in the figure, the leg 4 has a telescopic structure and includes a cylindrical body 41 and a bar 42 sliding into the cylindrical body 41 .

At the free end of the bar 42, a pad made of rubber or plastic material, for example, is preferably arranged on the ground to enhance the supporting function.

Preferably, the bar 42 and the body 41 are accommodated into the body together with the thrust spring and act on the bar 42 to form a single-acting hydraulic cylinder, and the spring (not shown in the drawings) is connected to the bar 42. By acting on the bar, the bar is maintained in a fit state (minimum extension state) within the body 41.

Next, the kickstand 1 includes a hydraulic system 5 that drives the bar 42 relative to the body 41; In particular, the hydraulic system 5 includes a hydraulic pump 51 for supplying hydraulic fluid (eg, oil) into the chamber between the bar 42 of the leg 4 and the body 41 to react to the reaction of the spring. while controlling the extension of the bar from the body.

According to a feature of the invention, the actuating path of the legs from the non-actuated state to the actuated state consists of two parts, namely the first part in which the drive motor 3 drives the leg or legs 4 relative to the base 4 to rotate them. It is divided into a first working path part and a second working path part extending from the cylindrical body 41 where the drive hydraulic system 5 drives the bar 42.

Optimum actuation is thus obtained, especially since the part of the path with the greatest weight in relation to the mechanical actuation is also actuated by means of the hydraulic system or only by means of the hydraulic system.

In particular in the first operating path portion the hydraulic system 5 is not active and in the second operating path portion the hydraulic system 5 is driven by the drive motor 3 , preferably an electric motor.

The legs 4 rotate relative to the base 2 in a first actuating path part (from the resting state to the intermediate actuating state), and the legs 4 in the second actuating path part (from the intermediate actuating condition to the final actuating condition). has a fixed angle with respect to the base (2).

Illustrating the present invention by way of example without limiting it, and explaining the solution shown in the drawings in more detail, the kickstand 1 includes a gear 6 meshing with the shaft of a drive motor 3 and is driven by a drive motor. The gear rotates (optionally in two directions).

The gear 6 optionally has a dedicated protective case or casing 61 .

The assembly of drive motor 3 , gear 6 and casing 61 form an electrically actuated assembly mounted for swinging relative to base 2 , for example using a dedicated pin.

At the center of the assembly the gear 6 has a threaded hole 62 into which the shaft 51 is meshed and then threaded.

The shaft 51 has an enlarged head 53 to form an actual hydraulic piston and works together with a pump body 52, which is mounted in the pump body for sliding motion and has a chamber C for hydraulic fluid. forms the actual hydraulic pump on which is formed.

The expansion head 53 of the hydraulic piston has at least one slotted seat 54 protruding outwardly from the pump body 52, in which the transverse pin 7 is arranged and the axis of rotation X It is connected with the leg 4 in an eccentric state with respect to.

Chamber C of hydraulic system 5 is selectively in fluid communication with a hydraulic chamber (not shown) of leg 4 by pipe 59 (with hydraulic fittings) so that hydraulic fluid is transferred to said chamber. When the bar 42 of the leg 4 extends from the cylinder 41 overcoming the force of the internal opposing spring.

A hydraulic system 5 comprising a shaft 51 , a pump body 52 and an extension head 53 translates relative to the electrically actuated assembly along a direction substantially coinciding with the central longitudinal axis of the shaft 51 . It is a portable device capable of; More specifically, the translational motion occurs over a length equal to the length of the slotted sheet 54 (measured in a direction parallel to the longitudinal axis of the center of the shaft 51).

The casing 61 of the gear 6 is an abutment element (optionally a suitable abutment, if present) for stopping said translational motion of the hydraulic system, as will become clear from the description below.

It should be noted that the shaft 51 is rotatably connected with the leg by means of a seat 54 and a pin 7 in addition to forming a hydraulic piston of the hydraulic system 5 .

Now, for brief description, the operation of the kickstand 1 will be described on the assumption that it starts from the stopped operation state of FIGS. 1 and 2 and operates to the final operating state of FIGS. 6 to 8 .

In the first step when the driving motor 3 is operated, the gear 6 is rotated; The rotation of the gear (by means of the threads of the hole 62 to which the threads of the shaft 51 are connected) causes the shaft 51 to translate.

The entire hydraulic system 5 is driven by the translational movement of the shaft 51 screwed into the hole 62 in the first step.

The translational motion of the shaft 51 causes the pin 7 to move and thus the leg 4 to rotatably operate.

3 to 5, the first stage ends when an intermediate operating condition is reached in which the leg 4 rotates relative to the base 2 but the bar 42 is still accommodated inside the cylinder 41; , in this intermediate operating condition the hydraulic system abuts the casing 61 (or at an equivalent joint for this purpose).

During the entire first phase the hydraulic system 5 is deactivated, meaning that the hydraulic system 5 does not compress oil in the chamber C which is in fluid communication with the hydraulic chamber of the leg 4; With the degree of freedom of the hydraulic system provided, the shaft 51 and the head 53 do not allow compression of the hydraulic fluid inside the circuit by the load of the reaction spring inside the leg 4.

Next, in the second step, the drive motor 3 continues to rotate the gear 6 and translates the shaft 51 as in the first step, but in this case the pump body is attached to the casing 61 (or adjacent portion). Translation of the hydraulic system 5 adjacently is prevented; The leg 4 is in a fixed position relative to the base 2 .

The shaft 51 thus starts compressing the hydraulic fluid in the chamber C.

In this step, the chamber C is maintained in fluid communication with the hydraulic chamber of the leg 4 so that the shaft 51 finally generates motion of the hydraulic fluid in the hydraulic chamber of the leg 4 and consequently the bar 42 ) from the cylinder to the outside.

By the way, the chamber C and the hydraulic chambers of the legs communicate with each other simultaneously (with the chamber C as an intermediate part between the chambers of the legs) to form a kind of communicating vessel circuit, in principle, the bar 42 ) extends from the cylinder 41 in the same size and thus forms a stable and solid support on the ground as shown in FIG. 9 on a flat ground.

Conversely, when the ground is not flat and uneven, if there is simultaneous communication between the chamber C of the leg 4 and the chamber C, as in FIG. 10, the bar 42 can be extended differently and simply put A known problem in this case can be solved by adapting to the non-uniform structure of

At the end of the second step, fluid communication between the hydraulic chamber of the leg and the chamber C is stopped and isolated and the bar 42 is prevented from returning under the weight of the vehicle.

It should be noted that an effective anti-theft function is thus obtained. If the drive motor 3 is not controlled, the leg 4 cannot be returned and thus movement of the vehicle is prevented.

A method of operating a kickstand (1) for a vehicle according to the present invention is obtained, wherein the kickstand (1) includes an electric drive assembly and a hydraulic system, wherein the kickstand rotates relative to a base (2) fixable to a frame of a vehicle A possible cylinder 41, comprising bars of a telescopic structure coupled to the cylinder 41 and deployed from the cylinder by means of a hydraulic system, the method comprising the following steps starting from an operating stop step:

- a first step in which the drive motor 3 rotates the leg 4 relative to the base 2 and by means of the drive motor the hydraulic system 5 is translated and the hydraulic system is not in an operating state;

- a second step in which the drive motor 3 drives the hydraulic system and extends the bar 42 from the cylinder 41 of the leg 4.

According to the preferred embodiment shown, in both the first and second stages the drive motor 3 acts on a shaft 51 which is part of the hydraulic piston of the pump of the hydraulic system and which is coupled to the leg 4 .

The return phase of the leg 4 takes place similarly and by a process reverse to that described so far (simply by rotating the motor 3 in the opposite direction) and will not be further explained.

Referring to FIG. 11 , a manual restraint release means is optionally provided, which is particularly useful when the motor 3 fails or power is not supplied to the motor 3 (eg, the battery of the vehicle is discharged). The restraint release means includes a tool socket arranged axially on the head of the shaft 51 at a position facing the engagement portion of the extension head 53, and a tool U (hexagon head wrench, screwdriver) is placed in the tool socket. driver etc.) is assembled so that the shaft 51 can rotate when the motor 3 is not operating.

Thus, the above objects are achieved.

In the following, many modifications are possible to the examples described so far, all of which are considered equivalent to the present invention.

For example, other types of motors (magnetic, hydraulic, etc.) may be provided instead of the electric motor 3 . The cylinder 41 of the leg 4 may further have any external shape (polyhedral, cylindrical, etc.).

Referring to FIG. 12 , an embodiment in which the kickstand according to the present invention can be applied to a vehicle of the prior art to which the kickstand of the present invention cannot be installed at the factory is shown.

The "retrofitted" type of embodiment is shown schematically as reference may be made to the structure of the previous embodiment for structural changes to the type of embodiment.

For the purpose of setting the kickstand according to the present invention as equipment that can be later applied to any existing vehicle, it requires a minimum number of interfaces fixed to the existing vehicle and differs from the structure of the vehicle to which the equipment is to be applied. The illustrated embodiment is chosen without limitation provided as a kit with various parts for adapting to structural conditions.

Obviously, the illustrated embodiment does not limit the technical concept to the general variant, but may provide a plurality of variants, each configured to be specifically assembled in a particular general vehicle model.

With respect to the specific embodiment in which the equipment is configured to fit most existing vehicles, the present invention delocalizes the operation of the system to the area under the vehicle floor adjacent to the kickstand to reduce overall dimensions due to mechanical assembly. provided to do

In a preferred embodiment the kickstand has a balancing system which controls the extension of the legs as compensation as already described in the previous embodiments.

In a preferred variant, the rotational operation of the kickstand is not provided as a mechanical operation as in the previous embodiment using a worm screw, but a member that flows and generates a pressure fluid at a delocalized position relative to the installation area of the kickstand. provided by a hydraulic actuator supplied by a hydraulic circuit which is operated by an electronic control unit, for example a programmable processor unit which carries out encoding instructions of a control program to perform functions for the kickstand. Controlled by a combination of a solenoid valve and a position sensor controlled together with a pressure and fluid flow generator, the hydraulic circuit has interfaces for communication with the sensor, solenoid valve and flow and generation member of pressurized fluid.

As explained above, the balancing system works according to the same concept, but the solution proposed in the above embodiment is mechanically simpler, the balancing system does not need to be opened and the piston is a piston 53 with a slot 54 This is because there is no need to have slots as in the case of

Referring to FIG. 12 , the hydraulic circuit includes a kickstand having a pair of legs mounted on ends of rods of hydraulic cylinders B1 and B2, respectively.

A hydraulic cylinder (C) controls the downward rotation of the stand.

The hydraulic cylinders B1, B2 and C are supplied by a hydraulic pump D communicating with the reservoir S.

An elastic spring (M) acts for rearward rotation of the kickstand. Thus, the provision of a reversible system, particularly with respect to pumps, is avoided. The system is more complicated, but since it is sufficient to provide a reversing pump through a distributor to reverse the transfer flow between the two inlets/outlets of a double-acting cylinder used for example for rotation of the kickstand and adjustable leg. The system is always available.

A union tee (R1) connects the delivery of pump (P) to cylinder (C) and reservoir (S) and connects cylinder (C) to reservoir (S). A solenoid valve (El) opens and closes the delivery of the pump to cylinder (C). Solenoid valve E2 opens and closes the connection of union tee (R1) to compensation system (A). Solenoid valve E3 opens and closes the connection to the delivery of pump D and the solenoid valve opens and closes the connection to reservoir S via union tee R1. Pipes T1, T2, T3, T4 and T5 connect cylinder C to the delivery of pump D, respectively, and to compensation system A, respectively, to reservoir S or pump D. and connect the circuit with two cylinders (B1, B2) with reservoir (S) and compensation system (A).

The control unit (CU) controls the opening and closing of the solenoid valve and the operation of the pump (D) by executing a control program in which commands for operating the system are encoded. In addition, the control unit (CU) may have an interface that is or can be connected in a cabled or wireless mode to perform system setup and/or unload diagnostic data or upgrade control programs. The configuration is not shown in detail and may be, for example, a general interface used in control electronic systems and known as a CAN bus.

According to the features of the present invention,

A sensor, such as a limit micro switch, that monitors the motion of the kickstand and is shown below but not limited thereto may be provided in the illustrated example.

- a sensor FI which controls the final downward rotation of the kickstand based on a signal by which the control unit closes valve E1 and opens valve E2;

- a sensor F2 which controls the final extension of the leg on the basis of a signal by which the control unit closes the valve E3;

- a sensor F3 which controls the completion of the return movement of the leg on the basis of a signal by which the control unit CU closes valve E2 and opens valve E1;

Sensor F4 which controls the final upward rotation of the kickstand based on the signal that the control unit (CU) closes the valves E1, E3 and E4.

Obviously, it is possible to provide other sensor devices that are connected to the control unit or act directly on the valve.

Regarding the embodiment of Fig. 12, the operation of the embodiment is described below:

With the kickstand disabled, the system has the solenoid valves El, E2, E3 and E4 closed, with the kickstand lifted to allow the vehicle to move.

When the user stops the vehicle and tries to place it on the kickstand, a switch (I1) connected to the provided control unit or directly connected to the pump (D) drives the hydraulic pump (D) and opens the solenoid valves (El, E3) do. Taking oil from the reservoir (S), the pump (D) operates the cylinder (C) which controls the downward rotation of the kickstand via pipe (T1) to compress the oil in the circuit. When the downward rotation of the kickstand is completed, the sensor (F1) closes the valve (E1) and the solenoid valve (E2) opens, so that the oil pressurized by the hydraulic pump (D) through the pipe (T2) flows into the balancing system (A). ) and controls the legs B1 and B2 to extend through the pipe T4.

The legs are fixed by the balancing system A in the same way described in the embodiment of FIGS. 1 to 11 .

When the above state is reached, control unit CU is notified that solenoid valve E3 is closed by micro switch F2. It should be noted that in this state the solenoid valve E4 is still closed so that oil cannot flow from the circuit to the reservoir. The kickstand now has a used state, i.e. the vehicle is parked, the circuit is locked and oil cannot enter the hydraulic pump (D) and reservoir (S) again.

The return step of the kickstand is made possible by the switch 12 that closes the solenoid valve E1 and opens the solenoid valve E4 while the kickstand is in a stopped state, that is, in the motion state of the vehicle. Solenoid valve E3 is closed from the previous step. Oil is thus allowed to return to reservoir S and at the same time legs B1 and B2 return. When the legs return, the solenoid valve E2 is closed and the solenoid valve El is opened by the micro switch F3.

The upward rotation phase of the kickstand is ensured by the load of the helical spring (M) on which the back pressure of the oil does not act because the solenoid valves (E1, E4) are opened.

When the above steps are completed, the micro switch (F4) detects the end of the upward movement of the kickstand and closes all the solenoid valves (El, E3, E4).

The down and up switches of the kickstand are indicated by I1 and 12 in FIG.

Operate the pump (D) and solenoid valve according to the above function.

Claims (15)

As a kickstand (1) for a vehicle,
It includes a base (2) fixed to the frame (T) of the vehicle, a drive motor (3) and two legs (4), wherein the legs (4) are not in contact with the ground, and the kickstand is stopped working and A kickstand that rotates relative to the base (2) along an operating path between two limiting positions corresponding to an operating state in which the legs (4) are in contact with the ground,
the at least one leg (4) is telescopically extendable and retractable and comprises a cylindrical body (41) and a bar (42) sliding within the cylindrical body (41);
The kickstand (1) includes a hydraulic system (5) that drives a bar (42) relative to a cylindrical body (41),
The working path from the resting state to the working state has two parts, a first working path part in which the drive motor 3 drives the leg or legs 4 to rotate relative to the base and the drive hydraulic system 5 Divided into a second actuating path portion extending from the cylindrical body 41 by driving the bar or bars 42;
An automatic system is provided, wherein the automatic system determines the distance between the fulcrum of the bar 42 on the ground and the position of the bar 42 retracted into the cylindrical body so as to keep the longitudinal vertical center plane of the vehicle perpendicular to the ground. balancing the extension path of the at least one bar 42 from the cylindrical body 41 according to
In the first operating path portion, the rotation of the kickstand is controlled by a motor (3) using a mechanical transmission which changes the rotational movement when the hydraulic system (5) driving the bar (42) is deactivated. actuated by said drive motor (3) which converts into a linear motion of the kickstand and forms a rotational motion of the kickstand, activating the hydraulic system (5) and activating the hydraulic pumps (51, 52, 53) in the second part of the working path. A kickstand characterized in that the pressurized fluid is supplied into the chamber of the cylinder that operates the bar (42). 2. The method of claim 1, wherein each bar (42) consists of or is controlled by a rod of hydraulic cylinders (B1, B2), each hydraulic cylinder being connected by pressurized fluid transfer through a shared distribution chamber (C, A); , A kickstand, characterized in that the automatic balancing system is composed of a distribution chamber forming an always open communication passage between two cylinders. 2. The method according to claim 1, wherein each bar consists of or is controlled by a rod of a hydraulic cylinder, each hydraulic cylinder comprising a respective hydraulic cylinder and/or each bar, the pressure of the bar against the ground and/or the pressure of the bar against the ground. Inside the bar 42 are individually and independently connected to the pressurized fluid delivery provided for sensors relating to the pressure of the fluid, the outputs of which are connected to a control unit CU, which transmits the signals of the sensors to each other. Compare and stop the flow of the pressurized fluid to one cylindrical body (41) having a pressure value exceeding a predetermined threshold, and measure the pressure value of the other cylindrical body (41) to the one cylindrical body (41). characterized in that for supplying the pressurized fluid to the other cylindrical body (41) until it is substantially equal to the value measured for and/or exceeds said threshold value. 2. The method according to claim 1, wherein in the first part of the working path the leg (4) rotates relative to the base (2), and in the second part of the working path the leg or legs (4) have a fixed angle with respect to the base (2). A kickstand characterized by having. 2. Kickstand according to claim 1, characterized in that a reaction spring is provided for the telescopically extending and collapsible legs to hold the bar (42) in a fitted, i.e. retracted, position within the cylinder (41). The kickstand according to claim 1, wherein the kickstand has a rotation stop junction, and a mechanical transmission that converts rotational motion into linear motion and controls rotation of the kickstand has means for releasing the kickstand, so that the pressurized fluid is supplied to the hydraulic system (5). ) A kickstand characterized in that for performing the additional movement operation of the pump supplied by. According to claim 1,
- a gear (6) meshing with the shaft of the drive motor (3) and optionally additionally having a protective casing (61) and having a threaded hole (62) in the center of the protective casing; The assembly of drive motor 3, gear 6 and casing 61 is an electric drive assembly mounted for swinging motion relative to base 2;
- a shaft 51 having a thread corresponding to the threaded hole 62 of the gear 6 and working with the threaded hole, said shaft 51 adding an enlarged head 53 to form a hydraulic piston The kickstand 1 includes a hydraulic pump body 52, in which the shaft 51 is slidably mounted to form a hydraulic pump, and at least for hydraulic fluid. One chamber (C) is formed; A hydraulic system (5) comprising a shaft (51), a pump body (52) and an enlarged head (53) is a piece of equipment movable relative to the electric drive assembly along a direction substantially coinciding with the longitudinal central axis of the shaft,
The enlarged head (53) of the hydraulic piston has at least one slotted seat (54) protruding outward from the pump body (52), and the kickstand (1) has a leg (4) with respect to the axis of rotation (X) of the leg. and a transverse pin (7) eccentrically connected to the transverse pin (7), characterized in that the transverse pin (7) is partially received in the slot seat (54). The method of claim 1, wherein the drive motor (3) is a motor that drives a pump for supplying pressurized fluid, and a transmission part of the pump is connected to a hydraulic actuator that drives rotational motion of a kickstand in a first operating path portion, When the hydraulic system driving the bar 42 is deactivated, the hydraulic system driving the bar 42 is activated when the kickstand stops rotating at the end of the first actuating path portion to drive the cylinder 41 of the pump. A kickstand characterized in that it is connected to the delivery unit. According to any one of claims 1 to 8,
- hydraulic fluid reservoir (S);
- a pump supplying said hydraulic fluid with a predetermined pressure to a hydraulic circuit for distribution of hydraulic fluid;
- a hydraulic actuator cylinder (C) which rotates the kickstand from a resting position to an operating position;
- hydraulic cylinders (B1, B2) with rods, said rods being bars (42) which slide into the legs of the kickstand between fully extended and fully retracted positions;
- a shared manifold (A) distributing hydraulic fluid to each of the two cylinders (B1, B2) each connected to one of the legs (4) of the kickstand, said manifold comprising the two cylinders (B1, B2) ) communicate with each other;
- a combination of servo control valves (El, E2, E3, E4) and branching off the fluid between the delivery portion of the pump (D) and the recovery reservoir (S);
- includes a position sensor for the kickstand based on the rotational position in the stationary state and in the operating state;
- a sensor for the position of each bar 42 relative to the leg 4;
- Includes a control unit (CU) set to individually control the pump (D) and each valve (El, E2, E3, E4) of the servo control valve combination to drive the rotation of the kickstand and the manifold (A) a hydraulic actuator cylinder (C), i.e., hydraulic cylinders (B1, B2) are alternately supplied or prevented from being supplied and connect the cylinder and the distribution manifold to the reservoir (S);
- a kickstand comprising control means (I1, I2) for activating the kickstand to carry out an operating path from an inactive state to an operating state or from an operating state to an inoperative state. 9. The kickstand according to any one of claims 1 to 8, characterized in that the kickstand is manufactured as a separate kit or integrated equipment that can be mounted on a vehicle. In the method of operating the vehicle kick stand (1),
rotational movement from an active rest position in which the kickstand does not protrude beyond the underside of the vehicle to an extent where the kickstand forms an additional support for the vehicle at least on the ground in addition to the support provided by the wheels and vice versa to an operating position where it projects beyond the underside of the vehicle In addition to the first exercise step, there is provided a second step of providing extension of each leg of the kickstand toward the support point on the ground, by each leg on the ground. Each leg is independent of the other legs up to the distance required to reach the fulcrum on the ground by measuring the pressure being developed and comparing that pressure to a pre-determined pressure threshold and/or comparing the sensed pressure values for each leg. , and the extension of the leg 4 is performed by hydraulic pressure by providing an actuating cylinder for moving an extension bar that slides with respect to the leg 4, and the actuating cylinders B1 and B2 connected to the two legs hydraulically connected to each other,
The extension of the leg 4 is performed by a hydraulic actuator which moves the extension bar sliding relative to the leg 4,
The actuators are individually and independently actuated by the control unit (CU) as a function of the pressure difference each bar has on the ground to minimize or eliminate the pressure difference and/or to keep the pressure difference below a predetermined threshold. How to operate the featured vehicle kickstand. delete delete delete delete

Images