KR0145825B1 - Hydraulic lifting device of spare wheel - Google Patents

Abstract

The present invention relates to a hydraulic lifting device that can easily lift the spare tire provided in the trunk of the vehicle, provided with a spare tire (3) of the opening (2) formed in the lower side on the rear side of the vehicle on one side The pressing and pulling means 8 for generating a start operation to lift to a predetermined height through the flow path 7 of the housing 6 and the pressing force of the working fluid flowing by the pressing and pulling means 8. Fixing and lowering means (9) for raising and lowering the spare tire (3) by a predetermined stroke and the spare tire (3) raised through the raising and lowering means (9) at a predetermined height. The lock means 10 and the release means 11 for returning the lifting and lowering means 9 fixed through the funding means 10 to the original position by the vehicle maintenance more convenient trunk of the vehicle Inside (1) There is an effect that it is possible to lift the mounted spare tire (3) with a small force.

Description

Hydraulic lifting device of spare tire

1 is a schematic side cross-sectional view showing a state where a spare tire is placed in the trunk of a conventional vehicle;

2 is a cross-sectional view showing a hydraulic lifting device of a spare tire according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Trunk 2: Opening

3: spare tire 6: housing

7: Euro 12: end

13: Button 14: The first cylinder

15: first piston 15a: first piston shaft

16: Horizontal 17,18 ,,,: 2nd cylinder

19,20: 2nd piston 19a, 20a ,,,: (2nd piston) Piston shaft

21: Lock Bar 22: Tilt

23: 4th cylinder 24: 4th piston

24a: fourth piston shaft 25: opening

26: plunger 27: important part

28: elastic member 29: seating portion

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic lifting device that makes it easy to lift a spare tire provided in the trunk of a vehicle. The present invention relates to a hydraulic lifting device, in particular having a working fluid, a pressurizable cylinder and a cylinder for lifting the spare tire. A hydraulic lifting device for spare tires is provided which makes it easier for a vehicle's mechanic to remove spare tires by lifting the tires.

1 is a schematic side cross-sectional view showing a state in which a spare tire is settled in a trunk of a vehicle, and an opening 2 having a predetermined depth is formed in the trunk 1 provided at the rear side of the vehicle as shown. Bar and the opening (2) has a spare spare tire (3) is settled so as not to protrude relatively from the bottom surface of the trunk (1) and the function to continue to store the spare tire (3) Will be in charge.

In particular, the lower portion of the opening (2) is formed with a screw portion (4) and corresponding to the screw portion (4) is provided with an elongated bolt (5) independently on the upper side to the trunk tire (3) trunk (1) ) Can be temporarily fixed.

However, in the conventional case as described above, since the spare tire 3 is deeply seated in the opening 2, even a trained vehicle mechanic may have some strain on the waist or the like when trying to take it out of the opening 2. In the case of self-driving drivers, there was a very difficult problem to lift.

Accordingly, the present invention has been made to solve the above problems, the vehicle maintenance is provided with a hydraulic lifting device that can be easily lifted by hydraulic pressure to the upper part of the spare tire placed in the opening of the vehicle trunk It is an object of the present invention to provide a hydraulic lifting device for spare tires that allows the lifter to lift the spare tire more conveniently.

The present invention for achieving the above object is provided in the circumference and the lower side of the opening of the vehicle trunk, the housing is provided with a flow path filled with a working fluid therein, and the flow path at the upper end portion of the housing A first cylinder in communication with the first cylinder, the first cylinder including a first piston therein, and a first piston extending upwardly of the first piston to pressurize the first piston of the first cylinder and protruding above the upper end of the housing; And a button formed at an end of the piston shaft and the first piston shaft, and in communication with the flow path at one side of the horizontal portion of the housing on which the spare tire is seated, at least having a cross-sectional area larger than that of the first cylinder. Two or more second cylinders and the second cylinder, the piston shaft of which protrudes toward the upper side of the housing and the spare tie A characterized by consisting of a second piston for lifting the top of the opening.

In addition, the present invention is a fourth cylinder formed to cross the middle of the flow path between the first cylinder and the second cylinder, and the fourth piston to block or communicate with the flow path by sliding in the fourth cylinder, and A fourth piston shaft extending from one side of a fourth piston and protruding to the outside of the housing and interposed between a seating portion of the fourth piston shaft and a housing having a seating portion provided at an end thereof, and the fourth piston communicating with the flow path. An elastic member that provides a pulling force to a position capable of being made to extend, a plunger extending outwardly from the seating portion of the fourth piston, and having an opening through one side thereof, and extending downward from one side of the button to be integrated with the button And the extension end thereof has an extended end thereof in contact with one end of the opening in response to the lowering operation of the button when the button is lowered. Moving me by characterized by including the fourth piston to cause the lock is formed an inclined for moving to a position to block the flow path bars.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view showing a hydraulic lifting device of a spare tire according to the present invention, wherein the housing 6 is provided around the side and the bottom of the opening 2 of the trunk 1, and a flow path in which a working fluid is filled therein. (7) is provided.

A first cylinder 14 communicating with the flow path 7 is formed at a portion proximate to the upper end 12 of the housing 6, and within the first cylinder 14 is formed a pressurized working fluid. One piston 15 is provided. From the upper portion of the first piston 15, the first piston shaft 15a extends so as to protrude a predetermined amount onto the upper end 12 of the housing 6, and the end portion of the first piston shaft 15a. It is provided with a button 13 to pressurize the first piston 15 by pressing as a person or other suitable separate device.

In addition, at one side of the horizontal portion 16 of the housing 6 in which the spare tire 3 is placed, second cylinders 17 and 18 having at least two cylinders having a larger cross-sectional area than the first cylinder 14 are provided. Is connected to the first cylinder 14 as a working fluid, and the piston cylinders 19a and 20a are connected to the first cylinder 14 as a working fluid. A second piston (19, 20 ,,,) is provided to protrude upward of the housing (6) to lift the spare tire (3) above the opening (2). Here, since the cross-sectional area of the second piston (19, 20 ,,,) is larger than the cross-sectional area of the first cylinder 14, the force for pressing the first cylinder 14 is doubled to lift the spare tire with less force. I can raise it.

According to the present invention, when the first piston 15 is pressurized, a working fluid raises the second pistons 19, 20, and the piston shaft 19a of the second pistons 19, 20, and (20a ,,) is to allow the spare tire (3) to lift above the opening (2) of the trunk (1), the spare tire (3) to the opening (2) even in the above structure I can lift it up without effort. However, in this case, since the person who pushes the button 13 and the person who lifts the spare tire 3 are required, in the present invention, the second pistons 19, 20, ... are spare tire 3; ) Is provided with a separate means for sealing the working fluid supplied to the second cylinder (17, 18 ,,,) to prevent the lowering of the second piston (19, 20 ,,,). This will be described below.

That is, in the middle of the flow path 7 between the first cylinder 14 and the second cylinders 17, 18,,, a fourth cylinder 23 is formed to cross the flow path 7. The fourth cylinder 23 is provided with a fourth piston 24 so that the fourth piston 24 slides left or right so that the flow passage 7 is blocked or communicated.

In addition, a fourth piston shaft 24a extends from one side of the fourth piston 24 to protrude outside the housing 6, and a seating portion 29 is provided at an end of the piston shaft 24a. have. In addition, an elastic member 28 is interposed between the seating portion 29 and the housing 6 of the fourth piston shaft 24a so that the fourth piston 24 can always communicate with the flow path 7. It provides an elastic force that keeps it in position. As a result, the fourth piston 24 is always pulled to the position communicating with the flow path (7). In FIG. 2, the housing 6 has a recessed portion 27 formed therein, and the elastic member 28 is installed therein, and the recessed portion 27 can maintain a stable seating state of the elastic member 28. On the other hand, the amount of protrusion of the plunger 26 and the amount of protrusion of the locking bar 21 which will be described later are minimized.

The plunger 26 further extends outward from the seating portion 29 of the fourth piston shaft 24a, and an opening 25 is formed through one side of the plunger 26.

An end portion of the locking bar 21 integrally extended downward from one side of the button 13 is located at the opening 25 side, and an extension end of the locking bar 21 is located at an inner end of the opening 25. The inclined portion 22 overlapping a predetermined amount is provided. When the button 13 is lowered, the inclined portion 22 contacts the tip of one end of the opening 25 and the inclined portion 22 is plunger 26 corresponding to the lowering operation of the button 13. ) To the left to cause the fourth piston 24 to be moved to a position where the flow path 7 can be blocked.

Effects and effects of the present invention configured as described above are as follows.

An operation for lifting the spare tire 3 placed in the opening 2 of the trunk 1 from the opening 2. First, when the button 13 is pressed, the first tire shaft 15a is connected to the first tire shaft 15a. One piston 15 is lowered in the first cylinder 14 to pressurize the working fluid filled in the flow path 7 inside the housing 6.

The pressing force of the working fluid is transmitted to the second cylinders 17, 18, and to raise the second pistons 19, 20, and in the second cylinders 17, 18,. In this case, the pressing force of the button 13 is doubled by the cross-sectional area difference between the first cylinder 14 and the second cylinders 17, 18, and, and thus the second pistons 19, 20, and Since the lifting force becomes large, the spare tire 3 can be lifted with a small force. In this way, since the second pistons 19, 20,, push the spare tire 3 over the opening 2 of the trunk 1, the spare tire 3 can be easily lifted without effort. .

Meanwhile, in the process of pressing the button 13 and the first piston 15 as described above, the locking bar 21 extending downward on one side of the button 13 is also lowered integrally, and the button 13 And when the first piston 15 is lowered to some extent, the tip of the inclined portion 22 of the locking bar 21 is to the inside of the opening 25 on one side (left side in FIG. 2) of the opening 25 of the plunger 26. As the lowering of the locking bar 21 proceeds, the inclined portion 22 slides into the opening 25 and the plunger 26 is moved to the left while being slightly overlapped and contacted. In this process, the elastic member 28 is compressed and the fourth piston 24 integrally formed with the plunger 26 and the fourth piston shaft 24a gradually moves to the left side. That is, while the pressurization of the first cylinder 14 proceeds, the fourth piston 24 gradually blocks the flow passage 7.

As a result, the blocking stroke of the fourth piston 24 is completed at the end of the pressing stroke of the first piston 15. As a result, the working fluid pushing the second pistons (19, 20 ,,) is sealed in the flow path (7) between the fourth cylinder (23) and the second cylinder (17, 18 ,,,), so that the spare tire ( It is possible to maintain the state in which 3) is pushed up onto the opening 2.

In addition, in the state where the inclined portion 22 of the locking bar 21 completely passes through the opening 25 of the plunger 26, that is, in the state where the fourth piston 24 completely blocks the flow path 7, Since the opening 25 continuously pushes the lock bar 21 due to the elasticity of the member 28, no force is applied to raise the first piston 15 (substantially the first piston 15). The first piston 15 and the locking bar 21 are kept in the lowered state continuously, so that the operator who presses the button 13 is pushed away from the button 13. The spare tire 3 can be lifted with the hands off. Thus, even one worker can proceed to press the button 13 and to take out the spare tire 3 sequentially.

After removing the spare tire (3) from the trunk (1), it is necessary to return everything to its original state in order to settle the next spare tire. The locking bar as the button (13) is pulled upward with a predetermined force. The inclined portion 22 of 21 is gradually released from the opening 25 of the plunger 26, and the fourth piston 24 is closed while moving to the right by the elastic force of the elastic member 28. The flow path 7 is opened. In the state in which the flow path 7 is opened even a little, any force that prevents the rise of the first piston 15 disappears. At this time, even if the button 13 is not pulled out, only the elastic force of the elastic member 28 is applied to the fourth piston ( 24 can be moved completely to the right, whereby the plunger 26 raises the locking bar 21 so that the first piston 15, the button 13 and the second piston 19, 20, ... It will return to the position of.

The hydraulic lifting device of the spare tire according to the present invention as described above, because the spare tire can be conveniently lifted by the hydraulic pressure to the upper portion of the spare tire placed in the opening of the trunk of the vehicle, it provides more convenience to the vehicle mechanic, Furthermore, since a device for locking the hydraulic pressure is provided in a state in which the spare tire is lifted to the upper portion of the opening, the operation of the lifting device to the operation of removing the spare tire can be easily completed by one worker.

Claims (1)

A flow path 7 filled with a working fluid is provided in the housing 6 provided around and below the opening 1 of the trunk 1 in which the spare tire 3 is placed, and the upper portion of the housing 6 is installed. A first cylinder 14 and a first piston 15 therein, which communicate with the flow passage 7 at the side end portion 12, have a flow path at one side of the horizontal portion 16 of the housing 6. At least two or more first cylinders (17,18 ,,) and second cylinders (17,18 ,,) in communication with (7) but having a cross-sectional area that is at least greater than that of the first cylinder (14). The pistons 19a, 20a, and, which are installed inside, protrude to the upper side of the horizontal portion 16 of the housing 6, and have second pistons 19, 20,. 15, the second pistons (19, 20 ,,) of the second cylinder (17, 18 ,,,) is raised by the hydraulic action by pressing the piston shaft (19a, 20a ,,,) is spared Lift the tire (3) up the opening (2) In the hydraulic lifting device of a pair tire, the fourth cylinder 23 formed to cross the middle of the flow path 7 between the first cylinder 14 and the second cylinder (17, 18 ,,,), and A fourth piston 24 which blocks or communicates with the flow path 7 by sliding in a fourth cylinder 23 and extends from one side of the fourth piston 24 to protrude out of the housing 6; The fourth piston shaft 24a having a seating portion 29 provided at an end thereof is interposed between the seating portion 29 and the housing 6 of the fourth piston shaft 24a. An elastic member 28 that provides a pulling force to a position where the passage 7 can communicate with the passage 7, and extends outwardly from the seating portion 29 of the twenty-fourth portion; The plunger 26 through which is formed and the first piston 15 extends to the upper portion of the first piston 15 so as to be pressurizable. A first piston shaft 15a protruding above the upper end 12 of the gong 6 and a button 13 formed at an end of the first piston shaft 15a, and extending downward from one side of the button 13; And ascending and descending integrally with the button 13, the prolonged end thereof contacts one end of the opening 25 when the button 13 is lowered to move the plunger 26 in response to the lowering operation. And a locking bar (21) having an inclined portion (22) for moving the fourth piston (24) to the flow path (7) blocking position.