WO2013046118A1

WO2013046118A1 - Position detecting device for two wheeler side stand

Info

Publication number: WO2013046118A1
Application number: PCT/IB2012/055094
Authority: WO
Inventors: Susheel SINHA; Vijay Singh
Original assignee: Hero MotoCorp Limited
Priority date: 2011-09-30
Filing date: 2012-09-25
Publication date: 2013-04-04

Abstract

The present invention relates to a position detecting device of a side stand of a two wheeled vehicle that allows vehicle to operate only when side stand is in safe zone. The vehicle comprises a frame and a side stand mounted to the bracket by a pivot for providing rotary movement between forwardly inclined service position and backward horizontally retreat position. In one embodiment, the device comprising: a magnetic field detecting means (24) and at least two magnetic field generating means (20, 21) being movable in accordance to the rotary movements of the side stand. The magnetic field generating means (20, 21) are disposed within the housing such that at least one of magnetic field generating means is being continuously sensed by the said magnetic field detecting means (24) and generates an alarm signal to the controller unit of the vehicle, thereby rendering the vehicle inoperative in alarming situations.

Description

"POSITION DETECTING DEVICE FOR TWO WHEELER SIDE

STAND"

FIELD OF THE INVENTION

The present invention relates to a position detecting device for a side stand of vehicles such as two-wheelers, more particularly, the present invention relates to a position detecting device for a side stand that detects various positions of the side stand with simple and cost effective design and easy to mount.

BACKGROUND

Generally, two wheeled vehicles such as motorcycles, scooters, etc., are provided with a side stand that supports the vehicle in a standing state when the vehicle is parked. Side stand, generally, is pivotally mounted, with the help of mounting bolt, onto the bracket which in turn is secured to the lower portion of the vehicle frame body. The side stand is adapted to swing to or from backward horizontal position as retreat or stored position where side stand is in in-operative position and from or to a forwardly inclined position as service or operative position where the vehicle can be parked or rest when not in use.

If the vehicle is driven with the side stand remaining in forwardly inclined service position, the side stand tends to impinge on the road surface or the ground, this possibility become further acute when vehicle is leaned towards side of the side stand while negotiating a turn, this poses a serious threat to the safety of the driver, many a times driver loses control on his vehicle and sometimes accidents so occurred can be fatal. Hence to obviate this abovementioned problem, it is always preferred to sense the position of side stand and accordingly allow or prevent the starting of starting system or the ignition system or the fuel supply system and thereby of the vehicle. Conventional systems are known for providing the position detecting device that can sense a position of the side stand. Few position detecting devices as disclosed in Indian Patent Application No.1311 /MUM/2010 senses only one position of the side stand i.e. when side stand is in inoperative position i.e. safe position and all other positions are treated as unsafe position. A situation may occur, due to change in stiffness of the side stand spring or for other reasons, where side stand is resting in inoperative position but outside the range of the sensor, in such a situation even though side stand is in safe position, will indicate that side stand is in unsafe position which is misleading to the rider. Here, the sensor is intended to only give warning to the rider. But, if interlock is devised based on such principle, will not allow vehicle to start. Hence, system is required that can sense the entire unsafe zone of the side stand.

Further, few systems as disclosed in US patent application 2009/0066057A1 use mechanical contact type switches which are more prone to failure, having less life span and are comparatively costly owing to the fact that it comprises more number of components and also mounting scheme is complex. Hence, it is further desired to provide a system that can sense the entire unsafe zone of the side stand and which is of non contact type.

Furthermore, some typical systems as disclosed in Japanese Patent 2000-121309 employ non contact type detecting devices, however the magnet used is thick and difficult to mount on the side stand, where very little space is available. Even few systems use small thin plate like magnet, using same configuration, however the cost of the manufacturing such thin magnet is very high making system financially unviable. Therefore, there is a need to provide a position detecting device for a side stand that overcomes the above mentioned shortcomings and inconveniences.

OBJECTS OF THE INVENTION

An object of the present invention is to provide a position detecting device for two- wheeled vehicle that at least partly addresses the aforesaid lacunae. Another object of the present invention is to provide a position detecting device for detecting the positions of the side stand and allow the operation of starting system / ignition system / fuel supply system when the side stand is in safe zone. Still another object of the present invention is to sense the positions of vehicle side stand in the unsafe zone and prohibit the operation of starting system / ignition system / fuel supply system when the side stand is in unsafe zone.

Yet another object of the present invention is to provide a position detecting device that is simple to design, cost effective and easy to mount.

SUMMARY

Accordingly, the present invention relates to a device for detecting positions of side stand in the angular zone, the side stand rotatably pivoted to a mounting bracket which is attached to a vehicle frame body, said device comprising magnetic field detecting means fixed to the mounting bracket and at least two magnetic field generating elements fixed to the side stand and at least one of the magnetic field generating elements being continuously detected by the magnetic field detecting means when the side stand is in the angular zone.

Further, the present invention relates to a device for detecting positions of side stand in the angular zone, the side stand rotatably pivoted to a mounting bracket which is attached to a vehicle frame body, said device comprising: magnetic field detecting means fixed to the mounting bracket and at least two magnetic field generating elements disposed within a housing, the housing fixed to the side stand and being movable along with the side stand, and at least one of the magnetic field generating elements being continuously detected by the magnetic field detecting means when the side stand is in the angular zone. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The invention itself, together with further features and attended advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present invention are now described, by way of example/s only, with reference to the accompanied drawings wherein like reference numerals represent like elements and in which: Figure 1 illustrates a schematic side view of a two wheeled vehicle in accordance with the present invention;

Figure 2 illustrates an exploded perspective view of the side stand assembly employing a position detecting device according to one embodiment of the present invention;

Figure 3 illustrates a perspective view of the side stand assembly in assembled condition employing the position detecting device according to one embodiment of the present invention;

Figure 4 illustrates a perspective view of the housing for magnetic field generating elements according to one embodiment of the present invention;

Figure 5 illustrates a perspective view of the housing with magnetic field generating elements disposed therein according to one embodiment of the present invention;

Figure 6 illustrates a perspective view of the forwardly inclined service position and backward horizontally retreat position of the side stand along with housing for magnetic field generating elements according to one embodiment of the present invention; Figure 7 illustrates a perspective view of the housing with magnetic field generating elements disposed therein according to another embodiment of the present invention;

Figure 8 illustrates an operating circuit diagram of a system in accordance with the invention.

DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS AND THE PREFERRED EMBODIMENT

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the invention.

The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by "comprises... a" does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.

In accordance with the present invention the drawbacks as stated hereinabove have been overcome by providing a position detecting device which senses entire unsafe zone of the side stand and allows the vehicle to operate only when side stand is in safe zone, which is of non contact type and less costly.

Further, the present invention relates to a device for detecting positions of side stand in the angular zone, the side stand rotatably pivoted to a mounting bracket which is attached to a vehicle frame body, said device comprising: magnetic field detecting means fixed to the mounting bracket and at least two magnetic field generating elements disposed within a housing, the housing fixed to the side stand and being movable along with the side stand, and at least one of the magnetic field generating elements being continuously detected by the magnetic field detecting means when the side stand is in the angular zone. In one embodiment of the present invention, the magnetic field generating elements are disposed along a curved path. In another embodiment of the present invention, the magnetic field generating elements are disposed such that identical polarity of all the magnetic field generating elements is maintained on same side. In still another embodiment of the present invention, the magnetic field detecting means is configured to sense the nearest polarity of the magnetic field generating elements. In yet another embodiment of the present invention the angular zone is the unsafe zone. In one embodiment of the present invention, the magnetic field detecting means detects at least one of the magnetic field generating elements and generates a signal to a controller indicating the unsafe position of the side stand when the side stand is in angular zone. In one embodiment of the present invention, the housing for the magnetic field generating elements is substantially a rectangular shaped box having its upper portion in curved shape and the magnetic field generating elements are disposed along the curved shape of the housing. In one embodiment of the present invention, the housing is provided with an opening in the central region thereof which coincides with the journaling holes of the leaves and of the side stand when the housing is secured to the inner leaf member of the side stand. In another embodiment, the curved portion of the housing is divided to form one or more compartments for disposing the magnetic field generating elements therein. In yet another embodiment, the housing is provided with a provision in the form of channel like structure to dispose a ferromagnetic material plate therein. In one embodiment, the magnetic field generating elements and the ferromagnetic material plate are disposed within the compartments and the channel like structure respectively and then covered and sealed with sealant material. In another embodiment of the present invention, the compartments that accommodates the magnetic field generating elements and the channel like structure that accommodates the ferromagnetic material plate is in the form of single depression. In still another embodiment of the present invention, the magnetic field generating elements and the ferromagnetic material plate can be separated by a thin wall such that force of attraction between the ferromagnetic material plate and the magnetic field generating elements is dominating the force of repulsion between the magnetic field generating elements. In one embodiment of the present invention, more than one ferromagnetic material plate can be used for the magnetic field generating elements. In another embodiment of the present invention, the magnetic field generating elements are molded into the housing. In yet another embodiment, the housing is made up of any non magnetic material.

In one embodiment of the present invention, the magnetic field detecting means is disposed within sensor housing which is secured to the bracket by fastening means. In another embodiment, more than one magnetic field detecting means are fixed to the mounting bracket. In one embodiment of the present invention, the housing for the magnetic field generating elements is secured to the side stand by fastening means.

In one embodiment of the present invention, the controller is configured to render the vehicle inoperative by preventing the starting of the starting system of the vehicle, or by preventing the operation of ignition system of the vehicle or by preventing the fuel supply to engine of the vehicle or by actuating the braking system of the vehicle or any combination thereof. In one embodiment of the present invention, the controller is configured to provide audio and/or visual indications to warn the rider.

In one embodiment, the ends or surfaces, which are forming magnetic poles, of the magnetic field generating elements are substantially flat in shape or non curved.

For the better understanding of this invention, reference would now be made to the embodiments illustrated in greater depth in the accompanying figures and description here below, further, in the following figures, the same reference numerals are used to identify the same components in various views.

The terms "front", "rear", "upper", "lower" used therein represents the directions as seen from a vehicle driver sitting astride and these directions are referred by arrows Fr, Rr, U, L in the drawing figures. Figure 1 illustrates a schematic side view of the two wheeled vehicle (100) of conventional construction employing the present invention.

In the vehicle (100), a side stand is mounted onto the lower portion of the vehicle for supporting the vehicle in a standing state when the vehicle is not in use. As shown in Figure 1, the vehicle (100), comprising one or more parts, such as main frame body (1), front fork (2), handle (3), front wheel (4), seat (6), swing arm (7), rear cushion (8), rear wheel (9), engine (10), and side stand (11).

As shown in Figure 2, the side stand (11) is pivotably attached to the frame (1) of the vehicle (100). In one embodiment, the side stand (11) is attached to the frame (1) of the vehicle (100) via a bracket member (13) (or simply referred to as bracket 13) that is fixedly secured to the lower portion of the main frame body (1) of the vehicle (100). The side stand (11) is having an upper end and a lower end, said upper end is pivotally attached to the bracket (13) and said lower end of the side stand (11) rests on the ground. The upper end of the side stand (11) is attached to the bracket (13) by a mounting means such as for example, a mounting bolt (12) and configured to swing about the axis of the mounting means.

In one embodiment, the side stand (11) is configured to swing along the direction of arcs arrow (A) and (B) [please refer Figure 6], from or to the forwardly inclined service position [as indicated by the reference numeral (70) in the Figure 6] to or from the backward horizontally retreat position [as indicated by the reference numeral (80) in the Figure 6]. The side stand (11) is disposed substantially parallel to the adjacent frame body portion, and is provided with a biasing spring (14) that aids the movement of the side stand (11) from forwardly inclined service position (70) to backward horizontally retreat position (80) and the reverse.

The said biasing spring (14) is provided with two eye ends, one eye end (15) is hooked to an extension pin (16) provided on the side stand (11) and other eye end (17) is hooked to a suitable point on the main frame body (01), more particularly, to the extension pin (16a) on the bracket member (13). Thus the side stand (11) exhibit the tendency to retract to its backward horizontally retreat position (80) when left in the zone as indicated by angle (P) [please refer Figure 6] and to the forwardly inclined service position (70) when left in the zone as indicated by an angle (Q) [please refer Figure 6]. The side stand assembly (101) as depicted in the Figure 2 and Figure 3 comprises side stand (11); bracket member (13); housing (19) for magnetic field generating elements (20), (21) and (22) such as permanent magnets; sensor housing (23) for magnetic field detecting means (24); fastening member such as mounting bolt (12). In one embodiment, the side stand (11) is having an upper end and a lower end, said upper end of the side stand (11) is bifurcated thereof to form an English letter "U" like structure forming spaced apart two leaves namely an inner leaf member (25) and an outer leaf member (26). The inner and the outer leaf members are provided with journaling holes (25a) [not visible] and (26a) entirely therethrough respectively. The inner leaf member (25) of the side stand (11) is provided with two small fitting holes (251) and (252) for fastening the housing (19) for magnetic field generating elements (20), (21) and (22) thereon. Between the two leaves (25) and (26) is disposed the bracket member (13) having a journaling hole (27) [not visible] generally in consonance with the journaling holes (25a) and (26a) of the two leaves (25) and (26). The side stand (11) is provided with the extended pin (16) on the central region thereof to hook the eye end (15) of the biasing spring (14) as illustrated in the Figure 2. The lower end of the side stand (11) is adapted to rest on the ground.

The bracket member (13) is provided with a base plate (13a) which is a flat plate like structure. In one embodiment, the front vertical end of the bracket member (13) is bent substantially perpendicular to form a vertical wall (13b). In another embodiment, a separate plate is welded to the base plate (13a) to form the vertical wall (13b). The base plate (13a) is provided with a journaling opening (27) to pivotally / rotatably support the side stand (11). The vertical wall (13b) is fixedly secured with an extension pin (16a), at suitable location, adapted to hook the eye end (17) of the biasing spring (14). The upper ends of both the base plate (13a) and the vertical wall (13b) are fixedly secured to the lower portion of the main frame body (1) preferably by welding process, thereby making the bracket member (13) a part of the main frame body (1). In another embodiment, the upper ends of the base plate (13a) and the vertical wall (13b) are secured to the main frame body by any using process known in the art. The sensor housing (23) accommodates the sensor or magnetic field detecting means (24), such as Hall Effect sensor. The sensor housing (23) is secured on the bracket member (13), towards the upper side of the journaling opening (27) using a fastening means such as adhesive tapes. In one embodiment, the sensor housing (23) is secured onto the bracket member (13) using screws (28) and (29) inserted through the small fitting holes (28a) and (28b) and through fitting holes (28c) and (28d) on the sensor housing (23) as illustrated in the Figure 2. In another embodiment, the sensor housing (23) is secured onto the bracket member (13) using double side adhesive tape (GT 7100, Acrylic foam tape). In yet another embodiment, the primer (K 520) is applied before attaching the adhesive tape to the sensor housing (23).

As shown in the Figure 4, the housing (19) for magnetic field generating elements (20), (21) and (22) is substantially a rectangular shaped box and upper portion of the housing is curve shaped so that the magnetic field generating elements (20, 21, 22) are disposed along the curved portion of the housing (19). In one embodiment the ends or surfaces, which are forming magnetic poles, of the magnetic field generating elements (20), (21) and (22) are substantially flat in shape or non curved. The housing (19) is fixedly secured to the inner leaf member (25) of the side stand (11) using fastening means such as adhesive tapes or screws (45) and (46) inserted through two small fitting holes (19a) and (19b) on the housing (19) and through small fitting holes (251) and (252) on the inner leaf member (25) of the side stand (11). In another embodiment, the housing (19) can also be secured in similar manner as used for sensor housing (23). An opening (30) is provided in the central region of the housing (19) to coincide with the journaling holes (25a) and (26a) of the leaves (25) and (26) when the housing is secured to the inner leaf member (25). While engaging the U- shaped portion of the side stand (11) with the bracket member (13) along with the housing (19) for magnetic field generating elements (20), (21) and (22) secured thereon, the mounting bolt (12) is inserted through the journaling holes (25a), (26a) on the side stand (11), the journaling hole (27) of bracket member (13) and the opening (30) on the housing (19). By way of this construction, the housing (19) for magnetic field generating elements (20), (21) and (22) and the side stand (11) are swingable about the axis of the mounting bolt (12) as a common body and hence angular rotation of the side stand is same as the detected angular rotation of the housing (19) of the magnetic field generating elements (20), (21) and (22).

As described earlier, the side stand (11) is swingable along the direction of arcuate arrow (A) and (B) i.e. along the curved path and the magnetic field detecting means (24) is secured at eccentric location, with respect to the rotating axis of the side stand (11), on the bracket member (13), in order to detect the curved motion of the side stand (11). In one embodiment, the housing (19), in particular the curved portion of the housing (19) is divided to form one or more compartments such as (20a), (21a) and (22a) for disposing the magnetic field generating elements (20), (21) and (22) therein. Further, the body of the housing (19) for magnetic field generating elements (20, 21, 22) is made up of plastic material such as POM. In another embodiment, the body of the housing (19) for magnetic field generating elements is made up of any non magnetic material, such as resin, plastic, etc., known in the art. The magnetic field generating elements (20), (21) and (22) are disposed within the compartments such that identical polarity of all the magnetic field generating elements (20), (21) and (22) is maintained on the same side. In one example, the south polarity magnetic field generating elements (20, 21, 22) is maintained away from the opening (30) and north polarity is facing towards it. Further, there is provided a provision in the form of channel like structure (31a) to dispose a plate (31) which may be a ferromagnetic material plate. In one embodiment, the plate (31) faces the north pole of all the magnetic field generating elements (20), (21) and (22). The magnetic field generating elements (20), (21) and (22) and ferromagnetic material plate (31) are disposed properly within the compartments (20a), (21a) and (22a) and channel like structure (31a) respectively, and then covered and sealed with the sealant material that aid to prevent the magnetic field generating elements (20), (21) and (22) from popping out of respective compartments (20a), (21a) and (22a). In the preferred embodiment, the compartments (20a), (21a) and (22a) that accommodates the magnetic field generating elements (20), (21) and (22) and channel like structure (31a) that accommodates the ferromagnetic material plate (31) can be in the form of single depression as illustrated in the Figurer 4 so that the magnetic field generating elements (20), (21) and (22) and ferromagnetic material plate (31) are in contact with each other. In another embodiment, the magnetic field generating elements (20), (21) and (22) and ferromagnetic material plate (31) can be separated by thin wall (19w) as illustrated in the Figure 7. However, it is desirable to maintain the thickness of thin wall (19w) such that force of attraction between ferromagnetic material plate (31) and magnetic field generating elements (20), (21) and (22) is still dominating the force of repulsion between magnetic field generating elements (20), (21) and (22). In another embodiment, a common magnetic plate or separate magnetic plates can be used for magnetic field generating elements (20), (21) and (22). In yet another embodiment, the magnetic field generating elements (20), (21) and (22) can be molded into the housing (19).

The housing (19) for magnetic field generating elements (20), (21) and (22) is secured from the vehicle side to the inner leaf (25) of the side stand (11). In one embodiment, as shown in fig. 2, the housing (19) is secured to the inner leaf member (25) such that identical poles of the magnetic field generating elements (20), (21) and (22) (South Pole in the preferred embodiment) face the magnetic field detecting means (24). The magnetic field detecting means (24) is configured to sense the south polarity of the magnetic field generating elements (20), (21) and (22). The gap between magnetic field detecting means (24) and magnetic field generating elements (20), (21) and (22) is maintained such that whenever magnetic field lines of any of the magnetic field generating element is cut by magnetic field detecting means (24), a signal is generated.

The magnetic field detecting means (24) and the housing (19) for magnetic field generating elements (20), (21) and (22) are fixed on bracket member (13) and on the inner leaf (25) of the side stand (11), respectively. The first magnetic field generating element (20) is sensed by the magnetic field detecting means (24) when side stand (11) is positioned in forwardly inclined service position (70), and none of the magnetic field generating elements is sensed when the side stand (11) is positioned beyond the angle zone Q from forwardly inclined service position (70). Furthermore, the gap between consecutive magnetic field generating elements (20), (21) and (22) is maintained such that while side stand (11) is traveling in the angle zone Q, at least one of the magnetic field generating elements (20), (21) and (22) is always sensed by the magnetic field detecting means (24). As illustrated in the Figure 6, when the side stand (11) is in the forwardly inclined service position (70), the first magnetic field generating element (20) is sensed by the magnetic field detecting means (24) thus a signal indicating that side stand (11) is in unsafe zone i.e. in the angle zone Q is generated and sent to the controller unit [not shown] of the vehicle (100). The controller unit processes the signal thus generated and subject to other interlocks and bypass circuits, renders the vehicle inoperative [described herein below]. If the side stand (11) is operated to move towards backward horizontally retreat position (80) but left at any position within the angle zone as indicated by angle (Q), the side stand (11), due to biasing force of biasing spring (14) tends to move back to its forwardly inclined service position (70). However, for any reason, if the side stand (11) remains at any position within the angle zone as indicated by angle (Q), even then, either of the magnetic field generating elements (20), (21), (22) is still sensed by the magnetic field detecting means (24) and hence signal indicating that side stand (11) is in unsafe zone i.e. in the angle zone Q is sent to the controller unit [not shown] of the vehicle (100) and subject to other interlocks and bypass circuits, the controller unit renders vehicle inoperative.

There are different ways of rendering the vehicle inoperative for example, by configuring the controller unit to prevent starting of the starting system. In another embodiment, the controller unit is configured to prevent the operation of ignition system. In yet another embodiment, the controller unit is configured to cut the supply of fuel to engine; or still in another embodiment, the controller is configured to actuate the braking system by applying the brakes on the wheel(s); or similar mechanisms or any combination thereof. Also, in combination to above or otherwise the controller unit is configured to give audio and/or visual indications to warn the rider. However, if the side stand (11) is left at any position beyond angle zone (Q), the side stand (11) due to its biasing force of biasing spring (14) tends to move back to its backward horizontally retreat position (80). If for any reason, the side stand (11) still remains at any position within the angle zone as indicated by angle (P) even then neither of the magnetic field generating elements (20), (21), (22) is sensed by the magnetic field detecting means (24) and hence no signal is generated and sent to the controller unit of the vehicle (100) and subject to other interlocks and bypass circuits, the controller unit allows the vehicle (100) to operate.

Figure 8 illustrates the circuit diagram of mechanism that renders the ignition system inoperative during alarming situations. As shown, the operating circuit comprising a position detecting device (201), a relay contact (202), an exciting coil (203) and an ignition circuit (204) all electrically connected with each other. The position detecting device (201) is normally open and relay contact (202) is normally closed. In one aspect, when the side stand (11) is in safe zone as indicated by (P), the normally closed relay contact (202) is configured to allow the ignition circuit (204) to be electrically connected with the battery, thereby allowing the operation of the ignition circuit. In another aspect, when the side stand (1 1) is in unsafe zone as indicated by (Q), the position detecting device (201) switches to OFF position i.e., in closed position and excites the exciting coil (203). The excited coil (203) thereby makes the relay contact (202) to open which now breaks the contact between the ignition circuit (204) and battery thus, disallowing the operation of the ignition circuit (204). Further, even if the position detecting device gets damaged / inoperative, vehicle can still be started, since, the position detecting device (201) is normally open and relay contact (202) is normally closed, so that inconvenience to the user is avoided.

Thus, the position detecting device of the side stand (11) ensures the operation of the vehicle only when side stand is in safe zone, and also senses the entire unsafe zone of the side stand (11). Further, the detecting device is of non contact type and less costly. While considerable emphasis has been placed herein on the particular features of this invention, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the invention. These and other modifications in the nature of the invention or the preferred embodiments will be apparent to those skilled in the art from the invention herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

Claims

We Claim:

1. A device for detecting positions of side stand in the angular zone, the side stand rotatably pivoted to a mounting bracket which is attached to a vehicle frame body, said device comprising:

magnetic field detecting means fixed to the mounting bracket; and

at least two magnetic field generating elements fixed to the side stand and at least one of the magnetic field generating elements being continuously detected by the magnetic field detecting means when the side stand is in the angular zone.

2. A device for detecting positions of side stand in the angular zone, the side stand rotatably pivoted to a mounting bracket which is attached to a vehicle frame body, said device comprising:

magnetic field detecting means fixed to the mounting bracket; and

at least two magnetic field generating elements disposed within a housing, the housing fixed to the side stand and being movable along with the side stand, and at least one of the magnetic field generating elements being continuously detected by the magnetic field detecting means when the side stand is in the angular zone.

3. The device as claimed in claim 1 or claim 2, wherein the magnetic field generating elements are disposed along a curved path.

4. The device as claimed in claim 3, wherein the magnetic field generating elements are disposed such that identical polarity of all the magnetic field generating elements is maintained on same side.

5. The device as claimed in claim 1 or claim 2, wherein the magnetic field detecting means is configured to sense the nearest polarity of the magnetic field generating elements.

6. The device as claimed in claim 1 or claim 2, wherein the magnetic field detecting means detects at least one of the magnetic field generating elements and generates a signal to a controller indicating the unsafe position of the side stand when the side stand is in the angular zone.

7. The device as claimed in claim 2, wherein the housing for the magnetic field generating elements is substantially a rectangular shaped box having its upper portion in curved shape and the magnetic field generating elements are disposed along the curved shape of the housing.

8. The device as claimed in claim 2, the housing is provided with an opening in the central region thereof which coincides with the journaling holes of the leaves and of the side stand when the housing is secured to the inner leaf member of the side stand.

9. The device as claimed in claim 7, wherein the curved portion of the housing is divided to form one or more compartments for disposing the magnetic field generating elements therein.

10. The device as claimed in claim 9, wherein the housing is provided with a provision in the form of channel like structure to dispose a ferromagnetic material plate therein.

11. The device as claimed in claim 9 or claim 10, wherein the magnetic field generating elements and the ferromagnetic material plate are disposed within the compartments and the channel like structure respectively and then covered and sealed with sealant material.

12. The device as claimed in claim 11, wherein the compartments that accommodates the magnetic field generating elements and the channel like structure that accommodates the ferromagnetic material plate is in the form of single depression.

13. The device as claimed in claim 10, wherein the magnetic field generating elements and the ferromagnetic material plate can be separated by a thin wall such that force of attraction between the ferromagnetic material plate and the magnetic field generating elements is dominating the force of repulsion between the magnetic field generating elements.

14. The device as claimed in claim 10, wherein more than one ferromagnetic material plate can be used for the magnetic field generating elements.

15. The device as claimed in claim 2, wherein the magnetic field generating elements are molded into the housing.

16. The device as claimed in claim 2, wherein the housing is made up of any non magnetic material.

17. The device as claimed in claim 1, wherein the magnetic field detecting means is disposed within a sensor housing which is secured to the bracket by fastening means.

18. The device as claimed in claim 1 or claim 2, wherein more than one magnetic field detecting means are secured to the mounting bracket.

19. The device as claimed in claim 2, wherein the housing for the magnetic field generating elements is secured to the side stand by fastening means.

20. The device as claimed in claim 6, wherein the controller is configured to render the vehicle inoperative by preventing the starting of the starting system of the vehicle, by preventing the operation of ignition system of the vehicle, by preventing the fuel supply to engine of the vehicle or by actuating the braking system of the vehicle or any combination thereof

21. The device as claimed in claim 6, wherein the controller is configured to provide audio and/or visual indications to warn the rider.

22. The device as claimed in claim 1 or claim 2, wherein the angular zone is an unsafe zone.

23. The device as claimed in claim 1 or claim 2, wherein the ends or surfaces, which are forming magnetic poles, of the magnetic field generating elements are substantially flat in shape or non curved.