DESC:DESCRIPTION
A METHOD AND SYSTEM FOR PREVENTION OF PARKING BRAKE ACTUATION DURING EQUIPMENT TRAVEL
TECHNICAL FIELD
[001] The present subject matter described herein, relates to a method for prevention of parking brake actuation in towed /haul vehicles, such as trailers, and dump trucks and other towed vehicles. More particularly, the present invention relates to a parking brake solenoid/valve/actuator to be controlled through a dashboard mounted switch. The invention relates to the parking brake solenoid/valve/actuator that in turn prevents the parking brake during equipment running condition on the vehicles.
BACKGROUND
[002] Background description includes information that may be useful in understanding the present subject matter. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed subject matter, or that any publication specifically or implicitly referenced is prior art.

[003] Existing parking brake systems as described above involve manual control/operation by a driver in the towed /haul vehicles. Therefore, the existing systems place substantial amounts of the equipment, for the control/operation in the vehicles, typically, in the dashboard or close to the driver's hands or feet. This causes air lines, hydraulic lines, or mechanical linkages to be crowded into spaces in the vehicles, and the air, hydraulic lines, or cables to extend for long distances from the vehicles to the brake mechanisms at the wheels. Not only does this result in crowded or inconveniently-placed equipment and lines, but also in delayed actuation of brakes as the forces applied in the vehicles travel through long fluid lines to the vicinity of the brakes.
[004] The existing systems provided with a transmission controller/ system will prohibited the engagement of gear from neutral to forward or reverse gear when the park brake is applied, however the systems will only work when shift tower is in neutral condition and the equipment is not moving. But, when the equipment is in running condition and the park brake is applied, the transmission controller will not inhibit the actuation of park brake, and allow the park brake to apply which may cause major accident due to sudden application of park brake and also cause damage to the critical component.

[005] As an example of the prior art, US Patent. No: US8091688B2 discloses a method for actuating a parking brake for a vehicle wheel. The parking brake includes a drive, a force transmitting device, and a device for sensing an application force component of the parking brake. The method includes minimizing friction losses and ageing losses of the force transmitting device, and sensing the application force component of the parking brake by performing a force measurement directly on the drive. Also presented is a device for actuating a parking brake for a motor vehicle wheel. The device includes a drive, a force transmitting device, and a device for sensing an application force component of the parking brake. The device for sensing the application force component includes a device for minimizing the friction losses and ageing losses of the force transmitting device, and a device for measuring force directly on the drive.

[006] Existing prior art such as DE10349970B4 relates to a method for actuating a parking brake of a motor vehicle, in which in a first step the brake piston by the hydraulic system of the main braking system to a brake pad is pressed, whereby brake pad is pressed against the brake disc and wherein in a second step, the brake piston by an actuator is locked in its position as soon as the brake disc is blocked by at least one brake lining, characterized in that the arranged locking the brake piston by a stop for the brake piston wedge is made of a toothing is connected to an electric motor.

[007] Another example US7431133B2 disclose a method for actuating an electromechanical parking brake device for a brake that can be actuated by an electromechanical actuator comprised of an electric motor and of a reduction gear connected downstream of the electric motor and provided for converting a rotational motion into a translatory motion. In order to guarantee that the electromechanical parking brake device works reliably in all operating states without using a tension force sensor, the method determines and stores, during the actuation of a parking brake device, a mean value of the torque of the electric motor necessary for generating the application force of the brake corresponding to the parking brake actuation and simultaneously determines the actuator position and actuates the electric motor at later points of time in such a way that it generates this torque multiplied by a correction factor k?=>1 so that the exerted tension force is maintained or increased.

[008] The existing systems do not avoid accidental actuation of the parking brake during equipment running condition on the vehicles, which may cause major damage to the equipment, driver and surrounding.

[009] Thus, there remains a need for a method for prevention of parking brake actuation in a vehicle. Also, there remains a need for parking brake solenoid to be controlled through a dashboard mounted switch. Also there remains a need for a parking brake solenoid that in turn prevents the parking brake during equipment running condition on the vehicles.
OBJECTS OF THE DISCLOSURE
[0010] In view of the foregoing limitations inherent in the state of the art, some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.

[0011] It is an object of the present disclosure to propose a method to protect the accidental actuation of the parking brake during equipment running condition on the vehicles.
[0012] It is another object of the present disclosure to propose the method to prevent costly damages, major accidents and personal injuries.
[0013] It is yet another object of the present disclosure to propose a system for prevention of parking brake actuation in towed vehicles.
[0014] It is yet another object of the present disclosure to propose the method of parking brake solenoid to be controlled through a dashboard mounted switch.
[0015] It is another object of the present disclosure to propose the parking brake solenoid to prevent the parking brake during equipment running condition on the vehicles.
[0016] These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following detailed description taken in conjunction with the accompanying drawings in which a preferred form of the present invention is illustrated.
SUMMARY
[0017] This summary is provided to a system and method for prevention of parking brake actuation in towed vehicles. Also the system and method protects the parking brake and persons when the equipment is in parking and moving conditions. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0018] The present disclosure relates to a system for prevention of parking brake actuation in a vehicle, comprises a park brake switch mounted on a dashboard of the vehicle. A parking brake solenoid coupled to the parking brake switch and the parking brake solenoid has a lock position that prevents release of the parking brake switch and maintain the parking brake solenoid in the lock position. An electric drive control system for controlling vehicle speed and a speedometer displays the reading on a liquid crystal display mounted on the dashboard. A relay and switch logic configured to control the parking brake solenoid based on the speed output. A coil point of the relay and switch logic is connected to the output signal of electric drive control system and a common point of the relay and switch logic is connected to the park brake solenoid. The electric drive control system controls parking actuation signal to prevent non-application of parking brake during the vehicle travel.
[0019] The present disclosure relates to a method for prevention of parking brake actuation in a vehicle, comprising the steps of: mounting a park brake switch on a dashboard of the vehicle. Coupling a parking brake solenoid to the parking brake switch and preventing the release of the parking brake solenoid which has a lock position in the parking brake switch and maintaining the parking brake solenoid in the lock position. Controlling and monitoring an electric drive control system for the vehicle speed and displaying a speedometer reading on a liquid crystal display mounted on the dashboard. Configuring a relay and switch logic to control the parking brake solenoid based on the speed output. Connecting a coil point of the relay and switch logic to the output signal of electric drive control system and connecting a common point of the relay and switch logic to the park brake solenoid, and controlling the electric drive control system parking actuation signal and preventing non-application of parking brake during the vehicle travel.
[0020] In order to further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF DRAWINGS
[0021] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0022] FIG. 1 illustrates a block diagram of a parking brake actuation system during equipment travel, in accordance with an embodiment of the present invention;
[0023] FIG. 2 illustrates a flow diagram of a method for prevention of parking brake actuation during equipment travel, in accordance with an embodiment of the present invention.
[0024] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[0025] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0026] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.

[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes”, “consisting” and/or “including” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0028] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0029] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0030] Embodiments explained herein pertain to a method for prevention of parking brake actuation during equipment travel on the towed/haul vehicles such as dump trucks. FIG. 1 illustrates a block diagram of a parking brake actuation system 100 during equipment travel, in accordance with an embodiment of the present invention. In general, a method for actuating a parking brake of a motor vehicle which is in a static state, wherein the parking brake transmits its braking effect through a mechanically, hydraulically or electrically-supported system to a brake actuator of towed /haul vehicles, such as trailers, and dump trucks and other towed vehicles. The system 100 for prevention of parking brake actuation in a vehicle 102 comprises a park brake switch 104 mounted on a dashboard 106 of the vehicle 102. A parking brake solenoid 108 is coupled to the parking brake switch 104 and the parking brake solenoid 108 has a lock position that prevents release of the parking brake switch 104 and maintain the parking brake solenoid 108 in the lock position. An electric drive control system 110 for controlling vehicle speed and a speedometer 112 displays the reading on a liquid crystal display 114 mounted on the dashboard 106. A relay and switch logic 116 configured to control the parking brake solenoid 108 based on the speed output. A coil point 118 of the relay and switch logic 116 is connected to the output signal of electric drive control system 110 and a common point 120 of the relay and switch logic 116 is connected to the park brake solenoid 108, wherein the electric drive control system 110 controls parking actuation signal to prevent non-application of parking brake during the vehicle travel.
[0031] FIG. 2 a flow diagram of a method for prevention of parking brake actuation during equipment travel in an embodiment of the present invention. For the first exemplary embodiment in accordance with FIG. 2, a schematic flowchart reproduces the functioning of the method 200 or of the system 100 respectively for parking brake actuation. The exemplary embodiment of FIG. 2 shows the case in which for example, because of a parking brake switch press, vehicle speed is compared. The flowchart contains an algorithm which is processed in the form of a software program by the electric drive control system 110 of the vehicle 102, as described in greater detail below.
[0032] In one embodiment the electric drive control system 110 comprises an electrical drive controller and a memory unit, with a control and evaluation process for controlling the parking brake solenoid 108 being executed in the control for the static or dynamic braking of the vehicle 102. In an operational mode the parking brake solenoid 108 is operable to be applied or released and in a service mode the park brake switch 104 is operable to be put into an opened position, wherein the parking brake actuation is further operable so that the service mode for the parking brake is implemented using the relay and switch logic 116, and wherein the electric drive control system 110 controls parking actuation signal to prevent non-application of parking brake during the vehicle 102 travel.
[0033] In one embodiment the method 200 for prevention of parking brake actuation during equipment travel on the towed/haul vehicles 102 such as dump trucks is explained. The method 200 involves providing the park brake switch 104 which is mounted on a dashboard 106 in the vehicles 102. A parking brake solenoid 108 also act as a valve/actuator is controlled using the park brake switch 104. The parking brake solenoid 108 continuously monitor vehicle speed by using an electric drive control system 110 such that the speedometer 112 displays the reading on a LCD (liquid crystal display) 114 mounted on the dashboard 106. The speed output is used to control the parking brake solenoid 108 with a relay and switch logic 116. Parking actuation signals are provided through an electrical drive controller to ensure non-application of parking brake during the equipment travel, as shown in FIG. 2.
[0034] In one embodiment when the park brake switch is pressed in ON condition, 24-volt parking actuation signals energize and subsequently actuate the park brake solenoid 108. A coil point 118 of the relay and switch logic 116 is connected to the output signal of electric drive control system 110 and a common point 120 of the relay and switch logic 116 is connected to the park brake solenoid 108.
[0035] In one embodiment whenever the speed of the equipment is more than the set speed limit, the electric drive control system 110 generate the output signal which is used to control the parking brake solenoid 108 with the relay and switch logic 116. The above system 100 ensure non-application of parking brake during the equipment travel.
[0036] In one embodiment the parking brake solenoid 108 has a lock position. The electric drive control system 110 has a modular design, and independent software modules are produced which can be developed separately of one another as the purpose may be. The software module serves for the conversion of input signals into corresponding signals for the execution/ prevention of a parking brake function induced by the driver based on the calculated speed of the vehicle 102. Another module of the software generates from the input signals for the execution of the relay and switch logic 116. The modular design of the software packages within the electric drive control system 110 permits an improved and, in particular, quicker data flow which enhances the performance of the electrical drive controller in total. Further, the modular software design permits a configuration of the individual modules related to their purpose and application and integration of them into the control unit in a simple fashion. Moreover, additional assistance functions can easily be inserted into the total system 100 by a supplementary software component. It is this way possible the parking brake solenoid 108 to be controlled through parking brake switch 104. The parking brake solenoid 108 in turn prevents the parking brake during equipment running condition on the vehicles 102.
[0037] Although the above detailed description illustrates a method for prevention of parking brake actuation during equipment travel. The invention concepts related to protect the damages to the parking brake only during equipment travel. It will be clear to one of skill in the art that the invention discloses about method for prevention of parking brake actuation for towed /haul vehicles, such as trailers, and dump trucks and other towed vehicles. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents, rather than by the examples given above.
[0038] These and other advantages of the present subject matter would be described in greater detail with reference to the following figures. It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its scope.
TECHNICAL ADVANTAGE
[0039] The present disclosure proposes a system for prevention of parking brake actuation in a vehicle to maintain required speed.

[0040] The present disclosure proposes a method for prevention of parking brake actuation during equipment travel in turn which could prevent major accident due to sudden application of park brake.
[0041] The present disclosure proposes the system and method for prevention of parking brake actuation for preventing major damage to the equipment, driver & surrounding.
[0042] Furthermore, each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the “invention” may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the “invention” will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0043] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
[0044] Furthermore, those skilled in the art can appreciate that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.

[0045] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0046] While the foregoing describes various embodiments of the present disclosure, other and further embodiments of the present disclosure may be devised without departing from the basic scope thereof. The scope of the present disclosure is determined by the claims that follow. The present disclosure is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.
,CLAIMS:WE CLAIM:
1. A system (100) for prevention of parking brake actuation in a vehicle (102), comprising:
a park brake switch (104) mounted on a dashboard (106) of the vehicle (102);
a parking brake solenoid (108) coupled to the parking brake switch (104) and the parking brake solenoid (108) has a lock position that prevents release of the parking brake switch (104) and maintain the parking brake solenoid (108) in the lock position;
an electric drive control system (110) for controlling and monitoring the vehicle speed and a speedometer (112) displays the reading on a liquid crystal display (114) mounted on the dashboard (106);
a relay and switch logic (116) configured to control the parking brake solenoid (108) based on the speed output;
a coil point (118) of the relay and switch logic (116) is connected to the output signal of electric drive control system (110) and a common point (120) of the relay and switch logic (116) is connected to the park brake solenoid (108), wherein
the electric drive control system (110) controls parking actuation signal to prevent non-application of parking brake during the vehicle (102) travel.
2. A system (100) as claimed in claim 1, wherein the electric drive control system (110) further comprises an electrical drive controller and a memory unit.
3. A system (100) as claimed in claim 1, wherein the memory unit stores instructions to control the relay and switch logic (116).
4. A method (200) for prevention of parking brake actuation in a vehicle (102), comprising the steps of:
mounting a park brake switch (104) on a dashboard (106) of the vehicle (102);
coupling a parking brake solenoid (108) to the parking brake switch (104) and preventing the release of the parking brake solenoid (108) which has a lock position in the parking brake switch (104) and maintaining the parking brake solenoid (108) in the lock position;
controlling and monitoring an electric drive control system (110) for the vehicle speed and displaying a speedometer (112) reading on a liquid crystal display (114) mounted on the dashboard (106);
configuring a relay and switch logic (116) to control the parking brake solenoid (108) based on the speed output;
connecting a coil point (118) of the relay and switch logic (116) to the output signal of electric drive control system (110) and connecting a common point (120) of the relay and switch logic (116) to the park brake solenoid (108), and
controlling the electric drive control system (110) parking actuation signal and preventing non-application of parking brake during the vehicle (102) travel.
5. A method (200) as claimed in claim 4, wherein including the step of comparing vehicle speed and the set speed of the vehicle (102).