|Title of Invention||
ELECTRO MECHANICAL DEVICE FOR ATTACHING WITH JACK
|Abstract||Device fitted with multiple -arm collapsible lifting machine (jack) is, mutch better than the conventional manually operated jack provided as a part of standard equipment with the vehicle by the manufacturers of the vehicles.|
|Full Text||ELECTROMECHANICAL DEVICE FOR ATTACHING WITH JACK & IMPROVED JACK THEREOF
Field of Invention:
This invention relates to the improvement in manual multiple arm collapsible lifting machines (jack) which is sold as standard accessory with most of the light motor vehicles by their manufacturers. The presently available jacks which are manually operated require a lot of manual labour to be used for the purpose of lifting a vehicle.
The aim of this invention is to provide an electro mechanical device which has been designed in such a manner that it can be attached to the jack with bolts or other processes thereby allowing the operator to lift the vehicle using the electric control switch without manual labour. Background of invention:
Anyone who has changed a flat tire knows the hassle and potential for serious injury involved with jacking up a car along the side of the road. There can be trouble in getting the jack assembled and in placing under the vehicle's frame or axle, as well as the possibility of injuring the hands or fingers in operating the jack. Then there is the safety concern of the vehicle falling off the jack while the tire is being changed. Power driven jacks are desirable since they allow the person changing the tire to stand out-of-the-way of the vehicle while raising the tire off the ground and require very little physical exertion in raising or lowering the vehicle.
Patent GB 116948, Watson, J. R. Feb. 6, 1918. Stands or supports for vehicles which discloses a screw jack for motorcars, the lifting nut is provided with trunnions which are mounted in plates secured to the vehicle and provided with two holes for the reception of a locking- pin, by means of which the jack may be held in either the operative or inoperative position.
Patent 4018421 discloses a hydraulic lifting jack which has a base supported on wheels, an elevating linkage, a hydraulic ram operating with the linkage and a handle for pressurizing and releasing the hydraulic ram. An integral block of rugged rectangular configuration serves a multiple purpose of providing a reservoir for hydraulic fluid, mounting the ram, mounting the pump and providing exteriorly precision drilled bores for all the hydraulic activity.
Patent GB 1232983 discloses a jacking system for lifting the sprung part of a vehicle chassis comprising a base structure incorporating an open top box with a single-acting hydraulic ram mounted
therein the cylinder of which is provided with hydraulic fluid from a reservoir through a pump powered by a double-acting compressed air motor supplied through a coupling and controlled by a hand lever which has a position for locking the ram. Two pairs of links are arranged on opposite sides of the ram and cross one another. The ends of the links are respectively pivoted on the side walls of the box by pivot pins. The movable part of the ram has trunnions on one of which rollers respectively engage beneath one of the links at their cross over location. Rollers similarly engage the other of the links. The free extremities of the four links have two rollers mounted thereon. Resting on the rollers is a support structure incorporating a beam on top of which is a socket member in which two extensions may slide. Thus, as the ram is extended, the beam is raised; being constrained against longitudinal movement by guide means the box. Alternatively the beam may be constrained by the linkage arrangement. Channel shaped members each with a pad may straddle the extensions but two jacking systems sunk in wells engaged by hooked lugs on the end walls of the box support a pair of cross-members each carrying two pads to engage the chassis of a vehicle. Instead of the upper ends of the links engaging the beam they may be pivotally connected to the lower ends of further crosslinks thus providing a lazy tongs form of construction.
The manual jack (without the attachment) requires a lot of manual labour by the operator to rotate the drive end of the jack for raising or lowering the jack using the handle provided with the jack. This action requires lot of physical labour and becomes more difficult for the operator who happens to be senior citizens or women.
It is an object of the present invention to provide a new and improved device for quickly and safely raising and lowering a vehicle wheel off the ground with minimal effort to change tire.
It is also an object of the present invention to provide a new and improved jack that overcomes some of the disadvantages normally associated in prior art jacks.
It is a further object of the present invention to provide a jack device that may be easily and efficiently be attached to standard available manual multiple arm collapsible jacks.
Summary of Invention:
This device is a combination of an electric DC. motor and reduction gear assembly which is fitted in a housing properly designed for the assembly. The voltage of D.C. motor is kept equal to the voltage of the battery of the vehicle which can vary to 6V to 24V. The wattage of the motor is calculated with
respect to the weight of the vehicle for which it is to be used. Since the DC. motor used is of high rpm (revolution per minute) i.e. around 3000 rpm it requires to be reduced to match the input rpm of the jack in such a manner that jack lifts the vehicle smoothly and slowly. In order to reduce the rpm of the motor to the desired rpm, reduction gear assembly is fitted in between the shaft of the motor and the central screw of the jack in such a manner that the reduced speed is supplied to the drive end of the central screw of the jack. The DC. motor of the device can be connected to the battery of the vehicle or any other equivalent power source with the help of a flexible wire through control switches used to control the raising and lowering of the jack.
This device is attached to the drive end of the jack which enables the jack to lift the vehicle using the electric power drawn from the inherent battery of the vehicle to which the jack is to be used. In order to lift the vehicle the jack is placed below the under carriage of the vehicle near the tyre, after proper placement of the jack it is electrically operated and it raises the vehicle thereby, lifting the tyre off the ground. Then any task i.e. removal and fitment of punctured tyre or under carriage repairs required can be easily executed. After doing the needful the jack can be electrically operated in reverse direction to lower the raised tyre to the ground and jack removed accordingly.
Brief description of the drawing
Fig. 1 shows the isometric view of the electromechanical device attached to the jack.
Fig. 2 shows the front elevation of the electromechanical device attached to jack with various components such as D.C. motors, housing containing reduction gear assembly, electrical control panel and connecting wires which can be connected to the D.C. battery inherent in the vehicle or any outside source.
Fig. 3 shows the plan view of the electromechanical device attached to jack.
Detailed description with reference to drawings:
The present invention comprises a battery driven reversible motor and speed reduction gear assembly
coupled to a multiple arm collapsible jack, all mounted on a flat, stable platform (base plate). The
device can be powered from a vehicle's battery or a power source outside. An electrical control panel
extended by means of a cable is used to raise and lower the vehicle while the user stands in safe
While using the jack the lift plate on top of the collapsible arms jack is placed under the frame or axle
of a vehicle close to the tire, the power switch is turned ON, and the user stands away from the vehicle with electric control panel. The UP button on the controller unit is then pressed to enable the motor and speed reduction gear, which is coupled to the jack, to turn slowly; thereby lifting the corner of the vehicle up until the tire is off the ground. The base plate provides a stable support under the frame or axle while the tire is being changed. Once the tire is changed, the user presses the DOWN button on the control panel until the tire is back solid on the ground.
FIGS. 1-3, shows the improved multiple arm jack 1 comprising a multiple arm collapsible jack 2 having arms (a, b), a electromechanical device 3 mounted at driver end of the jack comprising a gear assembly enclosed in a housing 10, the gear assembly being coupled by coupler means 20 to the reversible IX) motor 30, a solid metal base plate 4, having a flat stable bottom surface for contact with the ground, and a top lift plate S for resting of vehicle body. The jack operational mechanism uses a worm screw 6 to raise and lower the lift plate 5 that supports the frame or axle of a vehicle. A electric control panel 7 which has ON and OFF buttons and connected to motor switch at one end and battery of the vehicle or an external source(i.e. battery outside) through cables/flexible electric wire provides an electric control to the operation of jack for lifting and lowering.
While a preferred embodiment of the electro mechanical device attached jack has been described in detail, it should be apparent that modifications and variations thereto are possible, all of which fall within the true spirit and scope of the invention. Therefore, the foregoing is considered as illustrative only of the principles of the invention.
1) An electro mechanical device comprising a reversible motor coupled to a speed reduction gear means contained in a housing, an electric control panel connected through cables to reversible motor and battery of the vehicle or an external source characterised in that the gear assembly means attachable at the drive end to worm screw of standard multiple arm collapsible jack is used for raising or lowering the jack.
2) The electromechanical device as claimed in claim 1 is attached to drive end of a conventional collapsible arms jack, with the main screw, providing reduced rpm to the main screw for the convenient operation of the jack.
3) The electromechanical device as claimed in claim 1 is being attachable or detachable with standard collapsible arms jack available.
4) The electromechanical device as claimed in claim 1 wherein the reversible D.C. motor is attached to the car battery with a flexible electric wire via a control switch.
5) The electromechanical device as claimed in claim 1 wherein a reduction gear assembly is connected between the shaft of the D.C motor and the main screw of the jack.
6) The electromechanical device as claimed in claim 1 wherein the gear assembly is used to significantly reduce the high rpm generated by the motor to provide an optimal input rpm to the main screw of the jack for the smooth operation.
7) An improved jack having a reversible motor coupled to a gear assembly contained in a housing; the said gear assembly being attachable to drivers end of the collapsible arm jack, wherein the operation of raising or lowering the jack is controlled through the electric control panel which is connected through the cables to motor at one end and to battery of vehicle or external source at other end for supply of power.
8) The improved jack of claim 7, wherein the jack rests on a base plate has a flat bottom surface for making stable contact with the ground and has a flat lift plate attached at the top surface for interfacing with a vehicle frame or axle.
9) The improved jade of claim 7, wherein said jack means further comprising a worm screw means for rising and lowering said lift plate.
10) The improved jack as claimed in claim 7, wherein said controller unit coupled by cable means is having an ON button for raising said vehicle; and a OFF button for lowering said vehicle.
|Indian Patent Application Number||1069/DEL/2006|
|PG Journal Number||42/2009|
|Date of Filing||26-Apr-2006|
|Name of Patentee||NARESH K. GANDOTRA|
|Applicant Address||A-562, GANDHI NAGAR, JAMMUTAWI-180004,(J & K).|
|PCT International Classification Number||A01L 21/00|
|PCT International Application Number||N/A|
|PCT International Filing date|