JP2514084Y2 - Automotive jack device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a jack device for an automobile, which is used when the automobile body is lifted or when tires of the automobile are inflated when repairing a flat tire of the automobile.

"Prior Art" A conventional automobile jack device has a structure in which a single operating rod, in which a height adjustment support is screwed above the hydraulic jack body, is raised by hydraulic pressure supplied manually or electrically. ing.

In addition, when the tire is inflated, an air pump or a compressor is used.

[Problems to be solved by the present invention] In the conventional automobile jack device, since the vehicle body of the automobile is lifted by the rise of one operating rod, when the minimum height is set low so that it can be used for a vehicle with a low vehicle body. Has a drawback that it can obtain only a small stroke and cannot be used in a car with a high body.

In addition, if the stroke of the operating rod is set to be large so that it can be used in a vehicle with a high body, the minimum height becomes high, and it cannot be used in a vehicle with a low body.

Furthermore, when inflating tires, an air pump or compressor other than the jack device had to be used.

In view of the above-mentioned conventional drawbacks, the present invention is capable of lifting a vehicle body of a high body vehicle from a vehicle of a low body body, and it is easy to store the pushed up operating rod and to inflate tires and the like. It is an object of the present invention to provide a jack device for an automobile that can be used.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a hydraulic jack main body, first and second actuating rods protruding in two stages by hydraulic pressure supplied to the hydraulic jack main body, A support base screwed to the tip of a second operation rod protruding upward from the first operation rod so that the height can be adjusted, and the first and second operation rods attached to the support base. A hydraulic cylinder device having a push-down operation piece, a hydraulic piston for supplying a hydraulic pressure for raising the first and second actuating rods to the hydraulic jack body, and a hydraulic piston of the hydraulic cylinder device, which is attached to the hydraulic cylinder device. An air pump device having an air piston connected to the air pump, an air supply hose having an air nozzle at the tip connected to the air discharge port of the air pump device, and the air piston And a piston actuating device having a motor for reciprocating the hydraulic piston, and a first unit supplied to the hydraulic jack body.
A vehicle jack device is configured with a hydraulic pressure discharge valve that discharges the hydraulic pressure that raises the second operating rod.

[Operation] In the automobile jack device configured as described above, when the piston actuating device is actuated, the hydraulic piston of the hydraulic cylinder device and the air piston of the air pump device reciprocate.

By the reciprocating movement of the hydraulic piston, the hydraulic pressure is pressed in the direction of pushing up the first and second operating rods of the hydraulic jack main body to raise the first and second operating rods.

At this time, since the first and second operating rods project from the hydraulic jack body, the minimum height is low and a large stroke can be obtained.

By the reciprocating movement of the air piston, air is ejected from the air nozzle at the tip of the air supply hose.

"Embodiment of the Invention" Hereinafter, the invention will be described in detail with reference to an embodiment shown in the drawings.

In the embodiment shown in FIGS. 1 to 4, reference numeral 1 denotes a hydraulic jack body, in which a cylinder chamber 2 and a hydraulic pressure supply passage 3 formed so as to communicate with a lower portion of the cylinder chamber 2, The check valve 4 interposed in the hydraulic pressure supply passage 3, the hydraulic discharge passage 5 formed to communicate with the upper portion of the cylinder chamber 2, the check valve 6 interposed in the hydraulic discharge passage 5, A bypass passage 7 that connects the hydraulic pressure supply passage 3 downstream of the check valve 4 and the hydraulic discharge passage 5 upstream of the check valve 6 and a hydraulic discharge valve 8 interposed in the bypass passage 7 are provided. ing.

Reference numeral 9 denotes a first actuating rod projecting from an upper portion of the hydraulic jack body 1 having a lower end portion inserted into a cylinder chamber 2 of the hydraulic jack body 1. The lower end portion of the first actuating rod 9 is provided with the cylinder chamber. A piston 10 is formed which partitions the interior of 2 into upper and lower hydraulic chambers 2a and 2b.

Reference numeral 11 is a second operating rod that is slidably attached to the first operating rod 9 and projects from the upper portion of the first operating rod 9.

Reference numeral 12 is a threaded portion 13 formed on the upper portion of the second operating rod 11.
A support base for height adjustment formed with a screw portion 14 that is screwed with the support base 12. An upper surface of the support base 12 is provided with unevenness for preventing slippage and is projected outward to the first and second sides. An operating piece 15 used for pushing down the operating rods 9 and 11 is attached.

Reference numeral 16 denotes a hydraulic cylinder device attached to the hydraulic jack main body 1. The hydraulic cylinder device 16 includes a hydraulic cylinder 17, a hydraulic piston 18 that reciprocates in the hydraulic cylinder 17, and a piston rod that operates the hydraulic piston 18. 19 and a hydraulic passage 20 that communicates with the tip of the hydraulic cylinder 17, the hydraulic supply passage 3 upstream of the check valve 4 and the hydraulic discharge passage 5 downstream of the check valve 6.

Reference numeral 21 denotes an air pump device attached to the hydraulic cylinder device 16. The air pump device 21 is attached to the hydraulic cylinder 17 so as to be in the same direction as the axial direction of the hydraulic cylinder 17 and sucks into the tip portion. Passage 22 and discharge passage
An air cylinder 24 having 23, an air piston 25 to which the piston rod 19 reciprocating in the air cylinder 24 is connected, and the air cylinder 24 interposed in the suction passage 22 is sucked to the outside. The check valve 26 prevents the air from flowing back, and the check valve 27 prevents the air from entering the air cylinder 24 provided in the discharge passage 23.

28 is an air nozzle at the tip connected to the discharge passage 23
29 is an air supply hose attached.

Reference numeral 30 denotes a piston operating device that reciprocates the hydraulic piston 18 of the hydraulic cylinder device 16 and the air piston 25 of the air pump device 21.
Is a mounting plate 31 fixed to the air cylinder 24 of the air pump device 21, a DC motor 32 fixed to the mounting plate 31, a pinion gear 34 fixed to a drive shaft 33 of the DC motor 32, and the mounting A gear 36 fixed to a shaft 35 rotatably mounted on a plate 31 for meshing with the pinion gear 34 to reduce speed, a flywheel 37 that rotates integrally with the gear 36 fixed to the shaft 35, and a flywheel 37 One end is pivotally supported by the wheel 37, and the other end is composed of an air piston rod 38 pivotally supported by the air piston 25.

The moving volume of the second operating rod 11 operating in the first operating rod 9 and the volume inside the hydraulic passage 20 and the hydraulic cylinder 17 are substantially the same or the moving volume of the second operating rod 11 is Set to be smaller.

The jack device 39 for an automobile having the above structure is the jack body 1
Is set at the lower part of the vehicle body of the automobile, and the support 12 is set so as to be located at a predetermined portion of the vehicle body.

After that, the plug (not shown) connected to the DC motor 32 of the piston actuating device 30 is plugged into the outlet of the cigarette lighter to drive the DC motor 32.

By driving the DC motor 32, the flywheel 37 is rotated via the pinion gear 34 and the gear 36.

The rotation of the flywheel 37 causes the air piston rod 38 to reciprocate, and the hydraulic piston 18 reciprocates via the air piston 25 and the piston rod 19 connected to the air piston 25.

Due to the forward and backward movement of the hydraulic piston 18, the oil in the hydraulic cylinder 17 is press-fitted into the lower hydraulic chamber 2b through the hydraulic supply passage 3 via the check valve 4, and the first operating rod 9 and The second operating rod 11 is raised.

In addition, the return movement of the hydraulic piston 18 causes the upper hydraulic chamber to
The oil in 2a is supplied from the hydraulic pressure discharge passage 5 into the hydraulic cylinder 17 via the check valve 6.

Therefore, the reciprocating motion of the hydraulic piston 18 sequentially presses the oil into the lower hydraulic chamber 2b, and the first and second operating rods 9 and 11 are projected upward.

The drive of the DC motor 32 is stopped when the first and second operating rods 9 and 11 project to predetermined positions.

When the work of raising the first and second operating rods 9 and 11 is completed, the hydraulic discharge valve 8 is operated to open the bypass passage 7, and the operation piece 15 is pushed down to lower the hydraulic chamber below. The hydraulic pressure in 2b is guided into the upper hydraulic chamber 2a through the hydraulic pressure supply passage 3, the bypass passage 7, and the hydraulic pressure discharge passage 5, and the first and second operating rods 9 and 11 are stored in the hydraulic jack main body 1. To be done.

Next, when used as a compressor, by driving the DC motor 32 and reciprocating the air piston 25 in the same manner as described above, air enters the air cylinder 24 through the suction passage 22 and the air supply device 28 through the discharge passage 23. Because air is jetted from the air nozzle 29 via
Air can be supplied to tires, air mats, and the like.

[Different Embodiments of the Present Invention] Next, different embodiments of the present invention shown in FIGS. 5 to 7 will be described. In the description of this embodiment, the same components as those of the embodiment of the present invention are denoted by the same reference numerals, and duplicate description will be omitted.

The embodiment of FIGS. 5 to 7 is different from the embodiment of the present invention mainly in that the second operating rod 11 is provided with a support base 12A having no operation piece, and is thus formed. Support base 1
Even with the jack device 39A for an automobile using 2A, the same operation and effect as those of the embodiment of the present invention can be obtained.

"Effects of the Present Invention" As is apparent from the above description, the following effects can be obtained in the present invention.

(1) The hydraulic jack main body, the first and second operating rods that project in two stages by the hydraulic pressure supplied to the hydraulic jack main body, and the second operating rod that projects above the first operating rod. A support base screwed to the tip end so that the height can be adjusted, an operation piece that pushes down the first and second operating rods attached to the support base, and the first and second operation members are attached to the hydraulic jack body.
A hydraulic cylinder device having a hydraulic piston for supplying a hydraulic pressure for raising the operating rod of the hydraulic cylinder device, and an air pump device having an air piston attached to the hydraulic cylinder device and connected to the hydraulic piston of the hydraulic cylinder device,
An air supply hose having an air nozzle at the tip connected to the air discharge port of this air pump device, a piston actuating device equipped with a motor for reciprocating the air piston and the hydraulic piston, and the hydraulic jack body are supplied. Since it is composed of a hydraulic discharge valve that discharges the hydraulic pressure that raises the first and second actuating rods, the hydraulic piston is reciprocally moved by the operation of the piston actuator, so that the hydraulic pressure in the hydraulic chamber of the hydraulic cylinder body is increased. Can be press-fitted to project the first and second operating rods. At this time, since the first and second actuating rods project in two stages, the minimum height can be set low, and the projecting stroke can be set large. Therefore, it is possible to jack up an automobile having a high body from an automobile having a low body.

(2) According to the above (1), the air piston is reciprocated by the operation of the piston actuator, and air can be ejected from the air nozzle of the air supply hose. Therefore, it can be used when injecting air into a tire or an air mat of an automobile.

(3) According to the above item (1), the hydraulic pressure can be supplied by the operation of the piston operating device to cause the first and second operating rods to project, and the air can be ejected from the air nozzle. It has an up function and an air pump or compressor function and can be used efficiently.

(4) According to the above (1), the protruding first and second operating rods can be pushed down by holding the operation piece attached to the support base, so that the first and second operating rods can be easily stored. And it can be done easily.

(5) According to claims 2 and 3, the same effects as those of the above (1) to (4) can be obtained.

[Brief description of drawings]

1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a plan view showing an embodiment of the present invention, and FIGS. 3 and 4 are operation explanatory views of the embodiment of the present invention. 5 to 7 are explanatory views showing different embodiments of the present invention. 1: Hydraulic jack body, 2: Cylinder chamber, 2a: Upper hydraulic chamber, 2b: Lower hydraulic chamber, 3: Hydraulic supply passage, 4: Check valve, 5: Hydraulic discharge passage, 6: Check valve, 7 : Bypass passage, 8: Hydraulic discharge valve, 9: First operating rod, 10: Piston, 11: Second operating rod,
12, 12A: Support base, 13: Screw part, 14: Screw part, 15: Operation piece, 1
6: Hydraulic cylinder device, 17: Hydraulic cylinder, 18: Hydraulic piston, 19: Piston rod, 20: Hydraulic passage, 21: Air pump device, 22: Suction passage, 23: Discharge passage, 24: Air cylinder, 25: Air Piston, 26: Check valve, 27: Check valve, 28: Air supply hose, 29: Air nozzle, 30: Piston actuator, 31: Mounting plate, 32: DC motor, 33: Drive shaft, 34: Pinion gear, 35: Shaft, 36: Gear, 37: Flywheel, 38: Air piston rod, 39, 39A: Automotive jack device.

Claims (3)

(57) [Scope of utility model registration request] 1. A hydraulic jack main body, and first and second parts projecting in two stages by the hydraulic pressure supplied to the hydraulic jack main body.
And the second operating rod projecting upward from the first operating rod.
Of the operating rod, which is screwed to the tip end portion of the operating rod so as to be adjustable in height, an operation piece that pushes down the first and second operating rods attached to the supporting base, and the first portion to the hydraulic jack main body. A hydraulic cylinder device having a hydraulic piston for supplying a hydraulic pressure for raising the second operating rod, and an air pump device having an air piston attached to the hydraulic cylinder device and connected to the hydraulic piston of the hydraulic cylinder device, An air supply hose having an air nozzle at the tip connected to the air discharge port of this air pump device,
A piston actuating device having a motor for reciprocating the air piston and the hydraulic piston, and a hydraulic discharge valve for discharging hydraulic pressure for raising the first and second operating rods supplied to the hydraulic jack body. A jack device for an automobile characterized by: 2. A hydraulic jack main body, and first and second parts projecting in two stages by the hydraulic pressure supplied to the hydraulic jack main body.
And the second operating rod projecting upward from the first operating rod.
And a hydraulic cylinder device having a support base screwed to the tip of the operating rod so as to be adjustable in height, and a hydraulic piston for supplying hydraulic pressure for raising the first and second operating rods to the hydraulic jack body. An air pump device having an air piston attached to the hydraulic cylinder device and connected to a hydraulic piston of the hydraulic cylinder device, and an air supply hose having an air nozzle at a tip connected to an air discharge port of the air pump device. A piston actuating device having a motor for reciprocating the air piston and the hydraulic piston, and a hydraulic discharge valve for discharging hydraulic pressure for raising the first and second operating rods supplied to the hydraulic jack body. A jack device for an automobile, characterized in that 3. A hydraulic jack main body, and first and second parts projecting in two stages by the hydraulic pressure supplied to the hydraulic jack main body.
And the second operating rod projecting upward from the first operating rod.
Of the operating rod, which is screwed to the tip end portion of the operating rod so as to be adjustable in height, an operation piece that pushes down the first and second operating rods attached to the supporting base, and the first portion to the hydraulic jack main body. A hydraulic cylinder device having a hydraulic piston for supplying a hydraulic pressure for raising the second operating rod, and an air pump device having an air piston attached to the hydraulic cylinder device and connected to the hydraulic piston of the hydraulic cylinder device, An air supply hose having an air nozzle at the tip connected to the air discharge port of this air pump device,
A piston comprising a DC motor that reciprocates the air piston and the hydraulic piston, a reduction gear that meshes with a pinion gear of the DC motor, and a flywheel to which a piston rod of the air piston that rotates integrally with the gear is attached. A jack device for an automobile, comprising: an actuating device; and a hydraulic pressure discharge valve for discharging a hydraulic pressure for raising the first and second actuating rods supplied to the hydraulic jack body.