JPH08208191A - Jack driver - Google Patents

Abstract

PURPOSE: To secure a jack driver for rotating a jack driving screw clockwise or counterclockwise. CONSTITUTION: A jack 120 is installed in a power supply cable 110 electrically connected to a power supply part 90 of a motor-drive drill 70, and this jack 120 is inserted into a receptacle of an automobile cigarette lighter. Then, the drill 70 is driven by a car battery as a power source. A bar 150 is connected tight to an output shaft 74 of the drill, and this bar 150 is connected and engaged to a jack driving screw with a coupling means 60. Subsequently, this jack driving screw is rotated closkwise or counterclockwise with the drill 70.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack driving device for driving a manual jack provided in an automobile or the like.

[0002]

2. Description of the Related Art An automobile is equipped with a so-called pantograph type manual jack as shown in FIG.
This jack has four links 30a, 30b, 30
c and 30d have six shafts 50a, 50b, 50c and 50
D, 50e, 50f, the pedestal 40, and the pedestal 60 are rotatably connected in series in a substantially rhombic shape.
Left links 30a, 30b and right links 30c, 3
A rod-shaped drive screw 20 is rotatably installed on shafts 50b and 50e connecting 0d. The middle portion of the drive screw 20 is rotatably inserted into the left shaft 50b, and the left side of the drive screw 20 penetrates the left shaft 50b and the shaft 5b.
It projects to the outside of 0b. The right side of the drive screw 20 is rotatably supported by the right shaft 50e. Drive screw 2
The right end of 0 penetrates the right shaft 50e and projects to the outside of the shaft 50e. A ring-shaped locking member 22 is provided at the right end of the drive screw 20.

In this jack, a hook 12 provided at the tip of a crank-shaped handlebar 10 can be hooked inside a locking member 22 to connect and lock the handlebar 10 to a drive screw 20. Then, the drive screw 20 can be normally rotated by manually rotating the handlebar 10 to the right. Then, the left side of the drive screw 20 can be made to project to the outside of the shaft 50b so that the distance between the shaft 50b on which the drive screw 20 is installed and the shaft 50e can be shortened. Then, the links 30a, 30b on the left side and the links 30c, 30d on the right side can be stretched vertically to raise the jack pedestal 40 with respect to the pedestal 60.

Further, the handlebar 10 connected and locked to the drive screw 20 is manually rotated counterclockwise to rotate the drive screw 20 in the reverse direction, so that the left side of the drive screw 20 is rotated by the shaft 50b.
Shaft 50 on which the drive screw 20 is installed
The distance between b and the shaft 50e can be increased. Then, the links 30a and 30b on the left side and the link 30 on the right side
The jack pedestal 40 can be lowered toward the pedestal 60 by bending the c and 30d outward in a dogleg shape.

This jack is called a screw jack, and by utilizing the lever principle, a heavy car body or the like mounted on the pedestal 40 of the jack is small above the ground on which the pedestal 60 is placed. It can be lifted by force.

[0006]

However, in the above jack, the handlebar 10 is rotated clockwise to
When a heavy vehicle body or the like mounted on the pedestal 40 is lifted with respect to the ground, a considerably large torque needs to be applied to the handlebar 10 by hand.
I felt an excessive load on the rotating operation of the handlebar 10.

Further, it is necessary to rotate the handlebar 10 clockwise or counterclockwise near the ground in a bent and unnatural posture. The building touched it, and the clothes and body got dirty.

When the body of an automobile or the like is raised or lowered with respect to the ground using the above jack, the handlebar 10 must be rotated right or left many times. A lot of time was required for the rotating operation.

These things were especially felt when the periphery of the jack was surrounded by the body of a car, a building or the like and a sufficient space could not be secured around the jack.

The present invention can solve such problems.
It is an object of the present invention to provide a simple jack driving device for rotating the driving screw of the jack in the forward or reverse direction.

[0011]

In order to achieve the above object, a jack driving device of the present invention comprises an electric drill and
A power supply cable electrically connected to a power supply unit of the drill, and a jack provided for the cable, which is inserted into a socket of a cigarette lighter of an automobile to electrically connect the power supply cable to a battery of the automobile. A jack to be connected, a switching means for switching the rotation direction of the output shaft of the drill between forward and reverse, a bar connected and fixed to the output shaft of the drill, and a connection means for connecting and locking the bar to the driving screw of the jack. It is characterized by having and.

In the jack driving device of the present invention, the connecting means comprises a hook provided on the bar and a locking member for inserting and locking the hook, the locking member being provided on the drive screw. Alternatively, the connecting means includes a crossbar provided by crossing the bar in a cross shape, and a locking member for inserting and locking the crossbar, the locking member being provided on the drive screw. preferable.

Further, it is preferable that the bar is detachably connected to and fixed to the output shaft of the drill through fixing means, and the fixing means is opened at the tip of a shaft member extending to the output shaft of the drill. A counterbore hole, at least a part of the inner side surface of which is formed in a planar shape, and an insertion part which is insertably inserted into the hole, the insertion part being provided in a bar, and the insertion part. A flat contact surface formed on the side wall, which contacts the flat inner surface of the counterbore hole,
It is preferable that the contact surface is to be locked.

Further, it is preferable that the fixing means is provided with a locking means for locking the insertion portion of the bar so as to be opened so as not to slip out into the countersunk hole.

Further, in the jack driving device of the present invention, it is preferable that the power supply cable is detachably electrically connected to the power supply portion of the drill.

[0016]

In the jack driving device of the present invention, the bar can be connected and locked to the driving screw of the jack by using the connecting means. Along with that, the jack can be plugged into the socket of a car cigarette lighter to electrically connect the power supply cable to the car battery. Then, power can be supplied to the power supply unit of the drill through a power supply cable. In that case, the output means of the drill can be rotated forward by operating the switching means. Then, the driving screw of the jack connected and locked to the bar can be normally rotated together with the output shaft of the drill. Then, the left and right links of the jack can be extended vertically to raise the jack pedestal with respect to the pedestal.

Further, the output shaft of the drill can be reversely rotated by operating the switching means. Then, the driving screw of the jack connected and locked to the bar can be reversely rotated together with the output shaft of the drill. Then, the left and right links of the jack can be bent outward in a dogleg shape, and the pedestal of the jack can be lowered in the pedestal direction.

Further, in the jack drive device in which the connecting means is composed of a hook provided on the bar and a locking member for inserting and locking the hook, the locking member being provided on the drive screw, Inserting and locking the hook into the locking member, the bar is detachably connected to the drive screw through the hook and the locking member,
Can be locked.

Further, the connecting means comprises a cross bar provided by crossing the bar in a cross shape, and a locking member for inserting and locking the cross bar and a locking member provided for the drive screw. In the jack driving device, the crossbar can be inserted into and locked by the locking member, and the bar can be detachably connected and locked to the drive screw via the crossbar and the locking member.

Further, in the case of the jack driving device in which the bar is detachably connected and fixed to the output shaft of the drill through the fixing means, the bar is fixed to the output shaft of the drill when the jack driving device is transported or stored. A bar that is connected and fixed via a means,
The fixing means can be opened and disengaged from the output shaft of the drill. Then, the bar can be separated from the drill so that they can be compactly organized and stored.

Further, the fixing means is a counterbore hole opened at the tip of a shaft member extending to the output shaft of the drill, at least a part of the inner side surface of which is formed into a planar counterbore hole, and the hole. An insert portion for insertion into and out of a bar, an insert portion provided on the bar, and a flat contact surface formed on a side wall of the insert portion, wherein the inner surface is formed in the flat shape of the countersink hole. In the jack drive device including the contact surface that contacts and locks with, the insert portion provided in the bar can be inserted into the counterbore hole opened at the tip of the shaft member. Then, the bar can be connected to the output shaft of the drill via the shaft member. At the same time, the flat contact surface formed on the side wall of the insertion portion is brought into contact with and locked to the flat inner surface of the counterbore hole, and the bar is extended to the output shaft of the drill. Can be fixed to the member.
Then, when the bar is rotated, the insertion portion can be prevented from idling in the counterbore hole. The bar can then be rotated with the output shaft of the drill. At the same time, the insertion part of the bar can be pulled out from the counterbore hole, the bar can be separated from the drill, and they can be compactly organized and stored.

Further, in the above-mentioned fixing means, in the jack drive device having the locking means for locking the insertion portion of the bar so as to be opened so as not to slip out into the countersunk hole, the locking means is used to The insertion part of can be locked in the countersink hole so that it will not come out easily. At the same time, the locking means can be opened and the insertion portion of the bar can be pulled out from the counterbore hole.

Further, in the jack drive device in which the power supply cable is detachably electrically connected to the power supply portion of the drill, the power supply cable is connected to the power of the drill when the jack drive device is transported or stored. It can be detached from the supply section. Then, the power supply cable can be separated from the drill so that they can be compactly organized and stored.

[0024]

Embodiments of the present invention will now be described with reference to the drawings. 1 and 2 (a) and 2 (b) show a preferred embodiment of the jack driving device of the present invention, FIG. 1 is a front view showing the schematic structure thereof, and FIGS. 2 (a) and 2 (b) are the axes thereof. It is an expansion side view and an expansion front view of a member. The jack drive device will be described below.

In the figure, 70 is an electric drill. The drill 70 is an electric motor (not shown) and a speed reducer 72 connected to the output shaft of the motor. The output shaft 74 of the drill is a fraction of the rotation speed of the output shaft of the motor. A reduction gear that reduces the speed to rotate and a collet chuck 76 that is mounted on the output shaft 74 of the drill, the collet chuck 76 that detachably mounts the blade (not shown) of the drill, and the electric motor Drill body 78
The drill main body 78 has a handle 78a extending from a part thereof.

The drill main body 78 is provided with a drive switch 82 for driving an electric motor built in the main body 78 at the base of the handle 78a of the drill main body.

Further, the drill main body 78 has a built-in electronic switching means (not shown) for switching the rotation direction of the output shaft 74 of the drill rotated by the electric motor between the forward and reverse directions. A changeover switch 80 for operating the changeover means is provided near the base of the handle 78a of the drill body.

Inside the lower end of the handle 78a of the drill body,
As shown in FIG. 1, a power supply unit 90 that supplies power to the electric motor built in the drill body 78 is provided. Specifically, a bottomed hole 92 is opened at the lower end of the handle 78a, and a positive electrode terminal 94 and a negative electrode terminal 96 made of a spring material are provided on the left and right inner side surfaces of the hole 92, respectively. Then, those positive electrode terminal 94 and negative electrode terminal 96
Are electrically connected to terminals (not shown) of the electric motor.

Reference numeral 100 denotes a columnar plug which is inserted into and out of the hole 92. A positive electrode plate 102 and a negative electrode plate 104 are provided on the left and right sidewalls of the plug 100, respectively. One end of a power supply cable 110 is electrically connected to the positive electrode plate 102 and the negative electrode plate 104. Then, by inserting the plug 100 into the hole 92, the positive electrode plate 102 and the negative electrode plate 104 on the left and right sidewalls of the plug can be pressed against the positive electrode terminal 94 and the negative electrode terminal 96 on the left and right inner side surfaces of the hole, respectively. I am trying. The power supply cable 110 is detachably and electrically connectable to the power supply unit 90 of the drill.

Reference numeral 120 denotes a jack electrically connected to the other end of the power supply cable 110, which is inserted into a socket (not shown) of a cigarette lighter of an automobile,
A jack for electrically connecting the power supply cable 110 to a vehicle battery (not shown). A commercially available jack is used as the jack 120.

Reference numeral 150 is a bar-shaped bar connected and fixed to the output shaft 74 of the drill. The bar 150 is detachably connected and fixed to the output shaft 74 of the drill via the fixing means 130.

The fixing means 130 is shown in FIG. 1 and FIG.
As shown in (b), it is a counterbore hole 134 opened at the tip of a shaft member 132 extending to the output shaft 74 of the drill, and at least a part of the inner side surface 134a thereof is formed in a planar shape. The counterbore hole 134, the insertion part 136 that is inserted into and removed from the hole, the insertion part 136 provided on the bar 150, and the flat contact surface 136 a formed on the side wall of the insertion part 136. Abutment surface 1 that abuts and locks the flat inner surface 134a of the counterbore hole 134.
36a. The shaft member 132 is detachably attached to the collet chuck 76 attached to the output shaft 74 of the drill. The shaft member 132 extends on the output shaft 74 of the drill via the collet chuck 76.

The counterbore hole 134 has an inner surface as shown in FIG.
As shown in (a), it is formed in a triangular tubular shape or a polygonal tubular shape of a quadrangle or more (in the drawing, a quadrangular tubular shape). A plurality of flat inner side surfaces 134 a are formed in the counterbore holes 134. Along with that, counterbore 1
According to the shape of the inner surface of 34, the side wall of the insertion portion 136 to be inserted into the countersunk hole 134 has a triangular pillar shape or a polygonal pillar shape of a quadrangle or more (in the drawing, a quadrangular pillar shape), as shown in FIG. A plurality of flat contact surfaces 136a are formed on the side wall of the insertion portion 136. Then, when the insertion portion 136 is inserted into the counterbore hole 134,
The flat contact surface 136a of the side wall of the insertion portion can be brought into contact with and locked to the flat inner surface 134a of the counterbore hole.

Reference numeral 160 is a connecting means for connecting and locking the bar 150 to the driving screw 20 of the jack. Connecting means 16
0 is the hook 12 provided at the tip of the bar 150 as shown in FIG. 1 and the drive screw 20 as shown in FIG.
A ring-shaped locking member 22 provided at the end of the
Is a U-shaped plate-like locking member 24, and the locking member 2 has locking holes 26 formed in its left and right side walls.
It consists of 4. Then, by inserting and locking the hook 12 inside the ring-shaped locking member 22 or the locking holes 26 on the left and right side walls of the locking member 24, the bar 150 can be connected and locked to the drive screw 20. ing.

The jack driving device shown in FIGS. 1 and 2A and 2B is constructed as described above.

Next, an example of use of the jack drive device and its operation will be described.

Shaft member 1 extended to the output shaft 74 of the drill
The insert portion 136 of the bar is inserted into the counterbore hole 134 opened at the tip of 32. Then, the flat contact surface 136a of the side wall of the insertion portion is formed with the inner surface 1 formed in the flat shape of the countersink hole.
34a abuts and locks. Then, the bar 150 is connected and fixed to the output shaft 74 of the drill.

At the same time, the connecting means 160 is used to connect and lock the bar 150 to the driving screw 20 of the jack.

The plug 100 is attached to the handle 78 of the drill.
The power supply cable 110 is electrically connected to the power supply unit 90 of the drill by inserting the power supply cable 110 into the hole 92 opened at the lower end of a. At the same time, the jack 120 is inserted into the socket of the cigarette lighter of the automobile to electrically connect the power supply cable 110 to the battery of the automobile. Then, the drive switch 82 is operated to supply power to the electric motor through the power supply cable 110. At that time, the changeover switch 80 is operated to rotate the output shaft 74 of the drill forward by the electric motor.

Then, the fixing means 1 is attached to the output shaft 74 of the drill.
The drive screw 20 connected and fixed to the bar 150 via the connecting means 30 and the bar 150 connected and locked to the bar via the connecting means 160.
Can be rotated forward. Then, the links 30a, 30b on the left side of the jack and the links 30c, 30 on the right side of the jack.
Extend d up and down to attach the jack support 40 to the base 6
It can be raised against zero.

Further, by operating the changeover switch 80,
By rotating the output shaft 74 of the drill in the reverse direction, it is connected to the output shaft 74 of the drill through the fixing means 130, and is connected to the fixed bar 150 and the bar through the connecting means 160.
The locked drive screw 20 can be reversely rotated. Then, the links 30a, 30b on the left side of the jack and the links 30c, 30d on the right side can be bent outward in a dogleg shape, and the pedestal 40 of the jack can be lowered toward the pedestal 60.

When the jack driving device is transported or stored, the bar insertion portion 136 is inserted into the counterbore hole 1 at the tip of the shaft member.
34 and pull out the bar 150 from the output shaft 7 of the drill.
Remove from 4. At the same time, the plug 100 is pulled out from the hole 92 of the handle of the drill main body, and the power supply cable 110 together with the plug 100 is connected to the power supply unit 90 of the drill.
Disengage from.

Then, the bar 150 and the power supply cable 1
By separating 10 from the drill 70, they can be compactly organized and stored.

In the above jack driving device,
The bar 150 is irremovably connected and fixed to the output shaft 74 of the drill by welding or the like, or the power supply cable 110 is irremovably electrically connected to the power supply portion 90 of the drill by soldering or the like. Is also good. However, in such a case, the bar 1 may be used when the jack drive device is transported or stored.
The power supply cable 50 and the power supply cable 110 are separated from the drill 70, so that they cannot be compactly organized and housed.

Further, the shaft member 132 of the fixing means may be directly extended to the output shaft 74 of the drill without the collet chuck 76.

Further, it is preferable that the fixing means 130 is provided with a locking means 140 for locking the insertion portion 136 of the bar so as to be openable so as not to slip out into the counterbore hole 134. Then, it is preferable to prevent the insertion portion 136 of the bar from coming out of the counterbore hole 134 during the operation of the jack driving device.

In this locking means 140, as shown in FIG. 3, a hole 142 opened in the side wall of the shaft member 132 around the counterbore hole 134 and a slidable insertion at the inner end of the hole. Locking pin 144, the locking pin 144 having its head protruding inside the counterbore hole 134, a spring member 146 for pressing the rear part of the pin inwardly of the counterbore hole 134, and a hole 142.
Setscrew 148 for sealing the outer end of the bar and the insertion portion 136 of the bar
It is conceivable that the recesses 152 are formed on the side wall of the.

In this locking means 140, as shown in FIG. 3, when the insertion portion 136 of the bar is inserted into the counterbore hole 134, the head of the locking pin 144 is inserted into the recess 152 of the side wall of the insertion portion 136. The portion can be pushed in by using the elastic force of the spring member 146, and the insertion portion 136 of the bar can be locked in the counterbore hole 134 via the locking pin 144 so as not to come out. At the same time, by strongly pulling the insertion portion 136 of the bar inserted and locked in the countersunk hole 134 to the outside of the countersunk hole 134, the locking pin 144 resists the elastic force of the spring member 146 and the insertion portion 136. Can be disengaged to the outside of the recess 152 in the side wall. Then, insert the bar insertion portion 136 into the counterbore 13
4 can be pulled out.

Further, as shown in FIG. 4B, the counterbore hole 134 is formed in a cylindrical shape having a planar inner surface 134a formed in a part thereof, and is adjusted to the shape of the counterbore hole 134. Insert portion 13 to be inserted into the countersunk hole 134
As shown in FIG. 4A, 6 may be formed in a cylindrical shape having a flat contact surface 136a formed in a part thereof.
Then, when the insertion portion 136 of the bar is inserted into the counterbore hole 134, the flat contact surface 136a of the side wall of the insertion portion 136 is inserted.
An inner side surface 134a of the counterbore hole 134 formed in a plane shape.
It may be configured so that it can be brought into contact with and locked.

Further, in the jack driving device of the present invention, the connecting means 160 is the bar 15 as shown in FIG.
The cross bar 14 is provided by penetrating the end portion of 0 and crossing the end portion of the bar 150 in a cross shape, and the U-shaped plate-shaped locking member 24 provided at the end portion of the drive screw 20. Therefore, it may be formed with the locking member 24 provided with the cutout holes 28 through which the crossbar 14 is inserted and locked on the left and right side walls thereof. Then, the left and right of the crossbar 14 are inserted into and locked by the cutout holes 28 in the left and right side walls of the locking member 24, and the bar 15
0 may be detachably connected and locked to the drive screw 20.

Further, the drill 70 has the output shaft 7 of the drill.
It is preferable to use a remodeled commercially available rechargeable driver drill in which a collet chuck 76 for mounting a drill blade is attached to the No. 4 unit.

Further, the bar 150 is the handlebar 10 attached to the screw jack, and the handlebar 10 having the hook 12 and the crossbar 14 at the tip thereof is bent in a crank shape and the rear part thereof is cut off. It is good to use one.

The jack driving device of the present invention can also be used for various types of jacks that rotate a screw to drive the jack.

[0054]

As described above, according to the jack driving device of the present invention, it is possible to drive the electric drill using the battery of the automobile to rotate the driving screw of the jack in the forward or reverse direction. it can. Then, the body of an automobile having gravity mounted on the jack pedestal can be easily moved up and down without exerting any effort on the ground on which the pedestal of the jack is placed.

At the same time, it is no longer necessary to repeatedly rotate the driving screw of the jack forward or backward by hand using the handlebar, and the jack can be operated easily and quickly.

Further, it is not necessary to rotate the driving screw of the jack using the handle bar in the bent and unnatural posture near the ground, and the clothes and body of the person operating the jack are not the body of the automobile, the building or the ground. You can prevent your clothes and body from getting dirty by touching.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic structure of a jack driving device of the present invention.

FIG. 2 is an enlarged side view and an enlarged front view of a shaft member of the jack driving device of the present invention.

FIG. 3 is an enlarged front cross-sectional view of the vicinity of the locking means of the jack driving device of the present invention.

FIG. 4 is an enlarged front view around the insertion portion of the bar and an enlarged side view of the shaft member.

FIG. 5 is an enlarged perspective view of the periphery of the end portion of the driving screw of the jack.

FIG. 6 is an enlarged perspective view of an end portion of a driving screw of a jack and a tip end portion of a bar.

FIG. 7 is a front view of the jack.

[Explanation of symbols]

 10 Handlebar 12 Hook 14 Crossbar 20 Drive Screw 22, 24 Locking Member 26 Oblong Hole 28 Notch Hole 30a, 30b, 30c, 30d Link 40 Receptacle 50a, 50b, 50c, 50d, 50e, 50f Shaft 60 Pedestal 70 Drill 72 Reducer 74 Drill output shaft 76 Collet chuck 78 Drill body 80 Changeover switch 82 Drive switch 90 Drill power supply section 100 Plug 110 Power supply cable 120 Jack 130 Fixing means 132 Shaft member 134 Counterbore hole 136 Insertion section 140 Locking Means 142 Hole 144 Locking pin 146 Spring material 148 Set screw 150 Bar 152 Recess 160 Connection means

Claims (7)

[Claims] 1. An electric drill, a power supply cable electrically connected to a power supply unit of the drill, and a jack provided on the cable, the power supply cable being inserted into a socket of a cigarette lighter of an automobile to provide the power. A jack electrically connecting a supply cable to the vehicle battery;
A switching means for switching the rotation direction of the output shaft of the drill between forward and reverse; a bar connected and fixed to the output shaft of the drill; and a connecting means for connecting and locking the bar to the driving screw of the jack. Jack drive device characterized by. 2. The jack driving device according to claim 1, wherein the connecting means comprises a hook provided on the bar and a locking member for inserting and locking the hook, the locking member being provided on the drive screw. . 3. The connecting means comprises a crossbar provided by crossing the bar in a cross shape, and a locking member for inserting and locking the crossbar, the locking member being provided on the drive screw. The jack drive device according to claim 1. 4. The jack drive device according to claim 1, 2 or 3, wherein the bar is detachably connected and fixed to the output shaft of the drill through a fixing means. 5. The fixing means is a counterbore hole opened at the tip of a shaft member extending to the output shaft of the drill, at least a part of the inner side surface of which is formed into a planar counterbore hole, and the hole. An insert portion for insertion into and out of a bar, an insert portion provided on the bar, and a flat contact surface formed on a side wall of the insert portion, wherein the inner surface is formed in the flat shape of the countersink hole. 5. The jack drive device according to claim 4, comprising a contact surface that contacts and locks with. 6. The jack driving device according to claim 5, further comprising locking means for locking the insertion portion of the bar so that the insertion portion does not slip out into the countersunk hole. 7. The power supply cable is detachably and electrically connected to a power supply unit of a drill.
The jack drive device according to 5 or 6.