JP2000142337A - Jack device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jack device that can be actuated easily and positively while being extremely safe without trouble of attachment to and detachment from a support frame of an automobile. SOLUTION: Support pipes 6 supporting each actuating shaft 7 rotatably are fitted into two grooves 4 provided at the center part of both side parts of a body frame of an automobile. Each actuating shaft 7 is provided with two threaded parts 8, 9 threaded in opposite directions to each other, and cross rods 11 with nuts 10, 10 moving in a mutually approaching direction and a separating direction along two threaded parts 8, 9 of each actuating shaft 7 are derrickingly disposed in the grooves 4. A movable carriage 12 supporting the ground is elevatingly fitted to the cross rods 11, and the actuating shaft 7 is connected to an output shaft of an electric motor 13 that can be supplied with power from an automobile battery and actuated by a switch 14 disposed inside the automobile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack device for a motor vehicle, and more particularly to a jack device having a structure to be disposed in a body frame of a motor vehicle.

[0002]

2. Description of the Related Art Jacks are known as mechanical devices used to lift a vehicle when one of its wheels is replaced.

[0003] Replacing a wheel of a motor vehicle is a task that involves heavy labor since the wheel is removed and attached using a jack, and it is time-consuming and troublesome.

[0004]

All of these problems commonly encountered with the use of conventional jacks of this type are in place in the vehicle body frame of the vehicle without the need for the user to install or remove the jacks. This can be solved by the jack device of the present invention provided.

[0005] The jack device of the present invention is incorporated in the center portion of two longitudinal sides of the body frame so that the wheels on both sides can be replaced.

Accordingly, the jack device of the present invention incorporated in the body frame of a motor vehicle has the problem of the prior art jacks, that is, the jack must be raised at any time by the wheels, which is provided in the motor vehicle. The problem of having to place a jack on the support can be avoided.

[0007]

SUMMARY OF THE INVENTION A jack device according to the present invention is disposed in a groove in a vehicle body frame and is connected to an output shaft of a small electric motor which is operated by a current supplied from a battery of an automobile. And the electric motor is operated by a switch disposed inside the vehicle.

The jack device according to the present invention includes a cross bar having one end attached to a lower support plate having a shape of a movable platform for supporting the ground.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a jack apparatus for a vehicle according to the present invention.

As shown in FIGS. 2 to 4, the jack device 1 according to the present invention is mounted on the body frame 2 of the motor vehicle 3 in each of the central areas on both longitudinal sides.

The jack device 1 is disposed in a groove 4 of the vehicle body frame 2, and a support tube 6 having an internal thread for forming a nut is attached to a bottom surface 5 of the groove 4. Attaches an operating shaft 7, which has two threaded portions 8 and 9 which are threaded in opposite directions.
Two nuts 10 that move in a direction approaching each other and a direction separating from each other by the rotation of the operation shaft 7 are screwed into the nuts 9 through 9. Have been. The cross bars 11, 11 are 2
The three nuts 10, 10 can be raised and lowered by approaching movement and separation movement.

The operating shaft 7 is connected to a rotating shaft of a motor 13 to which electric current is supplied from a vehicle battery.
Is operated by a switch 14 provided inside the vehicle.

When the jack device 1 of the present invention is in the non-operation position, the carriage 12 covers the groove 4 in which the jack device 1 is disposed, and protects all components of the jack device 1 in the groove 4. The jack device 1 of the present invention, which forms a closing lid, is provided on both the right and left sides of the body frame 2 of the automobile 3. By operating one jack device 1, one wheel can be raised from the ground, and the other jack can be lifted. By operating the device 1, the wheels on the other side can be lifted from the ground. Further, in the illustrated embodiment, the jack device 1 of the present invention has a double structure in which the operating shaft 7 has two jack mechanisms, that is, two cross bars. However, the jack device 1 may have only one cross bar. .

When the jack device 1 of the present invention is in the non-operation position, that is, in the position shown in FIGS.
When the operating shaft 7 is rotated by positive rotation of the
11 move along the two threaded portions 8 and 9 of the operating rod 7 in a direction approaching each other, and
11 rises, the moving table 12 moves down, and FIGS.
Then, the vehicle body is tilted to the position shown in FIG. Thereafter, after the wheels are replaced, the switch 14 is turned off to rotate the motor 13 in the reverse direction, thereby turning the nuts 10
When the moving member 10 is moved along the two threaded portions 8 and 9 of the operating rod 7 in a direction separating from each other, the intersecting rods 11 and 11 lie flat, and the moving table 12 moves upward, as shown in FIGS. 5 and 6. Return to inactive position.

[0015]

Since the jack device of the present invention has the above-described structure, it is very safe, can be easily and reliably operated without troublesome attachment and detachment to and from the support frame of the automobile.

[Brief description of the drawings]

FIG. 1 is a side view of an automobile equipped with a jack device of the present invention.

FIG. 2 is a front view of a motor vehicle having the jack device of the present invention mounted on both sides in the longitudinal direction.

FIG. 3 is a front view of the automobile showing a state where the jack device of the present invention mounted on the right side is operated.

FIG. 4 is a front view of the automobile showing a state in which the jack device of the present invention mounted on the left side is operated.

FIG. 5 is a side view of the non-operating state of the jacking device of the present invention mounted on an automobile.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a side view of an operating state of the jack device of the present invention mounted on an automobile.

8 is a sectional view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jack apparatus 2 Body frame 3 Automobile 4 Groove 5 Bottom part 6 Support pipe 7 Operating shaft 8 Thread part 9 Thread part 10 Nut 11 Cross bar 12 Moving stand 13 Electric motor 14 Switch

Claims (2)

[Claims] 1. A support pipe for rotatably supporting an operating shaft is mounted in two grooves provided at central portions of both longitudinal sides of a vehicle body frame of an automobile, and each operating shaft is screwed in a direction opposite to each other. And a cross bar having a nut that moves in a direction away from and close to each other along the two screw portions of each operating shaft, and is provided so as to be able to undulate in the groove. Attach a carriage to support the ground,
A jack device for a vehicle having an operating shaft connected to an output shaft of an electric motor capable of supplying power from a vehicle battery and being operable by a switch disposed inside the vehicle. 2. The moving platform has a flat plate having the same height as a groove for housing the jack member in the groove when the jack is in the inoperative position, and the flat plate has a jack member in the groove. 2. The jack device for a motor vehicle according to claim 1, wherein a closing lid for covering the vehicle is formed.