JPH0672699A - Lifting device for car - Google Patents

Abstract

PURPOSE: To provide a vehicle jack which can be detachably fixed to the chassis of a vehicle, by which the replacement of wheels of the vehicle is facilitated an accident is prevented. CONSTITUTION: A vehicle jack comprises a base 2 attached to a vehicle. A threaded shaft 4 with one or more nuts 5 to which rollers 6 are fixed is attached to the base 2. One end of expandable strut structure 7 are secured to the rollers 6. A support leg to be stood on the ground is fixed to the other end of the strut structure 7. The base 2 has a guide member 10 with a groove by which the rollers 6 are guided. The threaded shaft 4 is connected with an electric motor 11 via a transmission member comprising a plurality of pinions 13 and 14 and a toothed crown 15. A nut with which a spanner for manual operation is engaged is provided on the free end of the threaded shaft 4. A stop member 16 with an alarm unit for emitting light and generating sound is provided on the base 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lifting device for replacing a vehicle wheel.

[0002]

A device of this type, known as a jack,
It is usually stored in the trunk of a car for use as needed.

[0003]

Positioning the jack on the body of the vehicle to lift the chassis of the vehicle is extremely awkward, and it is necessary to operate the jack with a lever to position the jack to that position. Yes, the shape of the jack does not allow the correct use, and an accident may occur, so it is a work that requires great care.

The device according to the invention solves the above-mentioned problems of the prior art, which are important for motor vehicle drivers, and facilitates the positioning and positioning of the jack.

It is an object of the present invention to provide a vehicle lifting device which is removably secured to a vehicle chassis or vehicle body and which is held on at least both sides, preferably perpendicular to the longitudinal direction of the vehicle.

The device can be provided in the front part of the motor vehicle in the rear part.

Another advantage of the present invention is that the jack is operated by an electric motor electrically connected to, for example, a vehicle battery.

[0008]

An electrically actuated vehicle lifting device according to the present invention comprises a pedestal that is appropriately fixed to a vehicle chassis, and a guide member is mounted on the pedestal.

The gantry supports a screw shaft mounted between both ends of the gantry, and includes a nut screwed onto the screw shaft,
The nut is provided with a roller, the roller is provided with a support structure composed of support posts attached to each other, and the support leg for supporting the ground is provided at an end of the support structure.

The screw shaft is actuated by an electric motor via a transmission of a plurality of pinions and a toothed crown.

As the screw shaft rotates, the nuts move along suitable grooves formed in the guide member to prevent slippage and overall dysfunction.

The screw shaft is provided with a nut at one end thereof so that a wrench can be engaged so that the screw shaft can be manually operated if necessary.

The mount has a linear cross section or a U-shaped cross section.

The pedestal has an end locking member which has a light emitting and / or acoustic warning device for stopping the rotation of the electric motor and for indicating the end of the rotation.

The support leg can be a fixed or articulated roller, or a fixed or articulated table.

The strut structure is composed of two or more struts that are fitted together.

The roller and strut structure can be completely covered or protected by a rubber tube.

According to a modification of the present invention, the present apparatus is composed of a frame properly fixed to the chassis of the automobile, and the guide member is mounted on the frame.

The gantry supports a screw shaft arranged between both ends of the gantry, and a nut to which a roller is fixed is screwed onto the screw shaft. The roller is attached to the first column, and the first
The end of the pillar is attached to the central portion of the second pillar, one end of the second pillar is attached to the pedestal, and the other end is provided with support legs that should reach the ground.

The support leg may be a roller in a fixed or articulated position, or a fixed or articulated table.

The screw shaft is operated by an electric motor which is a transmission member of a pinion and a toothed crown.

As the nut moves, the rollers move through the appropriate grooves in the guide member, preventing slippage and malfunction.

The screw shaft has a nut at its end for receiving a wrench for manually actuating the screw shaft when required.

The mount can be straight or U-shaped.

The gantry has an end stop member that has a light emitting and / or audible alarm to stop the electric motor and indicate the end of rotation of the electric motor.

A nut attached to the screw shaft moves the first strut so that the first strut is attached to the central portion of the second strut longer than the first strut, and one end of the second strut longer than the first strut is attached. It is attached to the end of the pedestal, and the other end holds supporting legs that should reach the ground.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lifting device according to the present invention will be described in detail with reference to the accompanying drawings.

With reference to the drawings, the lifting device 1 is formed by a substantially U-shaped mount 2, and a screw shaft 4 is attached to a flange 3 on the parallel side of the U-shaped mount 2.

Two nuts 5 are mounted on the screw shaft 4,
Rollers 6 are fixed to the nuts 5, the rollers 6 are joined to each other and to the ends of the extending columns 7, and the supporting legs 8 are fixed to the ends of the columns 7.

The plurality of rollers 6 run along a groove 9 formed on a guide member 10 forming a part of the gantry 2.

The screw shaft 4 is an axle 1 of a pinion 13 that drives a transmission member consisting of a pinion 14 and a toothed crown 15.
It is driven by an electric motor 11 which transmits the rotation to 2.

Similarly, the free end of the screw shaft 4 is provided with a nut for applying an appropriate spanner for manually rotating the screw shaft, if necessary.

The device has an end stop 16 for emitting light and an audible alarm.

With reference to FIGS. 3 and 4, the device 1 is formed by a substantially U-shaped mount 2 on which a parallel transverse flange 3 is mounted with a screw shaft 4.

A nut 5 is mounted on the screw shaft 4, the nut 5 is provided with an outer roller 6, and the outer roller 6 is provided with a first support column 17. The first support column 17 is longer than the first support column 17 and has an end portion. 20 is attached to the second support column 19 attached to the pedestal 2 at its end portion 18, and the other end of the second support column 9 is connected to the support leg 21.
have.

The screw shaft 14 is actuated by a drive pinion 13, a plurality of pinions 14 and an electric motor 11 which transmits rotation on the shaft 12 to a toothed crown 15.

A fixing nut 22 is attached to the end 17a of the screw shaft 4.
This nut 22 is provided for manually rotating the screw shaft.
On the other hand, a spanner (not shown) can be coupled.

The device 1 has an end stop member 16 for emitting light or an audible alarm.

The device is operated by remote control and the gantry 2 or guide member 10 has a suitable shape for covering the rollers 6 in a box-shaped space.

While the essence of the invention and its embodiments have been described above, the apparatus shown in the above description and the accompanying drawings can be modified at its ends without changing the basic principle.

[0041]

As described above, the vehicle lifting device according to the present invention is extremely easy to position and operate at a predetermined position, can be remotely controlled from outside the vehicle, and there is no risk of an accident.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view of an apparatus of the present invention.

FIG. 2 is a plan view showing an engaged state of a guide member and a plurality of rollers of the present apparatus.

FIG. 3 is a partially longitudinal side view of a modified example of the device of the present invention.

FIG. 4 is a plan view showing a guide of the apparatus and an engagement state between a plurality of rollers.

[Explanation of symbols]

 1 Lifting Device 2 Frame 3 Flange 4 Screw Shaft 5 Nut 6 Roller 7 Post 8 Support Leg 9 Groove 10 Guide Member 11 Electric Motor 12 Axle 13 Pinion 14 Pinion 15 Toothed Crown 16 Stopping Member 17 First Post 17a End 18 End 19 2nd support | pillar 20 End part 21 Support leg 22 Fixing nut

Claims (3)

[Claims] 1. A support structure comprising a mount fixed to an automobile, a screw shaft having a nut is mounted on the mount, a roller is fixed to the nut, and a strut structure is attached to the roller so as to extend and contract with each other. A supporting member to reach the ground is fixed to the free end of the strut structure, a guide member having a groove in which a roller travels is provided on the gantry, and a transmission member having a screw shaft having a plurality of pinions and a toothed crown is provided. The screw shaft is connected to the electric motor via a nut, a spanner for manual operation can be applied to the free end of the screw shaft, and an end locking member is provided on the pedestal to issue both sound and light alarms regarding the position of the support leg. A lifting device for an automobile mounted on the automobile, characterized by being provided. 2. The apparatus according to claim 1, wherein the guide member and the gantry have a shape that protects the rollers by a box-shaped cover, and the electric motor can be operated by remote control from outside the vehicle. . 3. A mount for fixing to a vehicle, a screw shaft having a nut for fixing a roller is mounted on the mount, a first support pillar is attached to the roller, and an end portion of the first support pillar is a second support pillar. The second support is attached to the pedestal and the other end is provided with a support leg, and the screw shaft is connected to the electric motor through the transmission members of the plurality of pinions and the toothed crown. 2. The nut according to claim 1, wherein the other end is provided with a nut to which a spanner for manual operation can be attached, and the gantry is provided with a guide member for moving the roller through the groove by the rotation of the screw shaft. apparatus.