JP2017001798A - Portable compact jack and tire service car on which compact jack is hooked - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact jack which has a whole weight less than 30 kg and can be carried by a hand.SOLUTION: A front of a main body 1 has a hydraulic cylinder 4 equipped with a plunger 5, wheels 2, 2 are attached to a rear part of the main body 1, and further, a handle 3 is mounted on a rear side of the main body 1, and the handle can be oscillated in a vertical direction. The handle 3 is directed to a front side of the main body 1, and is locked at a substantially horizontal position, a position erected upwards and a position directed, and a pedal 7 for releasing the lock is attached to the main body 1. In the case that the handle 3 is directed forwards and is substantially horizontally positioned, a space 8, through which a hand is inserted between the handle and the main body top face and which enables gripping of the handle 3 by the hand, is formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a small jack that is lightweight and can be carried by an operator, and a tire service car in which the small jack is secured to a wall surface of a box.

  There are various types of jacks, but the jack targeted by the present invention is not a large installation type but a small and lightweight type jack that can be moved. By the way, a mobile simple type jack has been widely used in the past, and there are various uses for this mobile simple type jack, but in general, when replacing a vehicle tire, the vehicle body is held so that the wheel is lifted. Can be raised. Also, it can be used during work performed by lifting the vehicle body even when replacing parts of the vehicle body and oil.

In such a case, the plunger of the hydraulic cylinder is protruded when the movable simple jack is moved and disposed on the bottom of the vehicle body.
FIG. 6 is an external view showing a conventional mobile simple jack. In the figure, (a) represents the main body, (b) represents the wheel, (c) the handle, and (d) represents the hydraulic cylinder. The main body (a) is provided with a hydraulic cylinder (d) having a plunger (e), and the plunger (e) can protrude by swinging the handle (c) up and down.

  By the way, wheels (B) and (B) are attached to both sides of the main body (A) and can be pulled with a grip (F) attached to the tip of the handle (C). However, the two wheels (b) and (b) are attached to the handle side of the main body (b). When the handle (c) is pulled and moved by holding the grip (f), the main body (b) ) The bottom of) is rubbed against the ground and a very large force is required. In particular, when the ground is uneven, it may not move even if it is pulled.

  At this time, even if the jack is lifted by hand, its weight is large and not easy. In the case of the mobile simple jack of the type shown in the figure, the weight is about 40 to 50 kg, and it is difficult to carry it by hand to a required place. Therefore, even if there are some irregularities on the ground, you must move by pulling the handle (c).

The “movable simple type jack” according to Japanese Patent Laid-Open No. 2004-307093 and the “movable simple type vehicle jack” according to Japanese Patent Laid-Open No. 2012-136318 are the same type jacks as shown in FIG.
"Mobile simple jack" according to Japanese Patent Application Laid-Open No. 2004-307093 "Mobile simple vehicle jack" according to Japanese Patent Application Laid-Open No. 2012-136318

  Thus, the conventional mobile simple jack has the above-mentioned problems. The problem to be solved by the present invention is this problem, and provides a small jack that is small and light and can be carried by hand, and a tire service car that can be hung on the wall of a box. .

  The small jack according to the present invention is light and has a weight that can be carried by an operator by hand. Although it is lighter than a conventional mobile simple jack and is less than 30 kg, the specific weight is not limited. By the way, the small jack of the present invention is provided with a hydraulic cylinder provided with a plunger at the tip of the main body, and wheels are attached to both sides on the rear side. The handle is attached to the rear of the main body and can be tilted forward and locked to that position.

The handle that is tilted forward is almost horizontal, so that it can be lifted by grasping the handle. Further, the handle is locked at a position where it rises and extends upward, and is locked at a position where it further falls backward.
If the jack operates the lever attached to the handle, the air from the outside is supplied and the plunger of the hydraulic cylinder protrudes upward to push up the vehicle.

On the other hand, the small jack of the present invention is configured so that it can be hung on the wall of the box mounted on the loading platform of the tire service car.
Therefore, the metal fittings are attached to the wall surface of the box at a predetermined interval, and the claws are attached to the wall surface at a predetermined interval. The engagement fitting is formed with an engagement groove for engaging both wheel shafts, and the claw has a shape that can be engaged with a protruding piece protruding from the side surface of the main body. Here, it does not specifically limit regarding the specific shape of the said locking metal fitting and a nail | claw.

The small jack according to the present invention is lighter than 30 kg, and can be carried by hand without the wheels rolling around the ground. Therefore, even if there is some unevenness on the ground, it can be quickly carried to a necessary place without any problem.
The mini jack has a short handle and can be locked in a horizontal position so that it can be grasped and lifted.
On the other hand, it can be hooked on the side of the box mounted on the loading platform of the tire service car, and the jack is not placed on the loading platform floor, so that it does not get in the way. For this purpose, a locking metal fitting and a claw are attached to the wall surface of the box, and stable attachment is possible without dropping from the wall surface due to the shaking of the vehicle as the tire service car travels.

It is an Example which shows the small jack which concerns on this invention, (a) is a top view, (b) Front view. When a small jack carried by the operator is hung on the wall. The example which shows the axial part structure which is supporting the handle | steering-wheel. When the pin is fitted in the insertion hole formed in the rotation lock plate that locks the direction of the handle. This shows the specific position of the handle attached to the jack body. Conventional general mobile small jack.

1A and 1B are external views showing a small jack according to the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front view. In the figure, reference numeral 1 denotes a main body, 2 denotes a wheel, and 3 denotes a handle. The main body 1 has a hydraulic cylinder 4, and the hydraulic cylinder 4 includes a plunger 5. The wheels 2 and 2 are attached to both rear sides of the main body 1, and the hydraulic cylinder 4 is provided on the front side of the main body 1.
Here, if hydraulic oil is supplied to the hydraulic cylinder 4, the plunger 5 can protrude and extend upward.

And the handle | steering-wheel 3 is attached to the back of the main body 1, is attached to the axis | shaft 6, and can rock | fluctuate to an up-down direction. Moreover, the handle 3 is configured to be locked in three directions as shown in FIG.
That is, when the handle 3 is arranged horizontally and extends to the front side of the main body 1, the handle 3 stands vertically upward, and the handle 3 tilts backward and extends in three ways. Become. Of course, it can also be configured to lock at other positions.

  A pedal 7 is attached to the rear side portion of the main body 1, and when the pedal 7 is pressed, the lock is unlocked and the handle 3 is allowed to swing up and down, and functions to lock again at a predetermined position. Here, the handle 3 is substantially L-shaped. For this purpose, a space 8 having an appropriate size is formed between the handle 3 and the upper surface of the main body 1 in a horizontally extended state. I can hold 3.

  Since the small jack of the present invention is lightweight (less than 30 kg), it is carried by holding the handle 3 formed horizontally, and is lowered to the ground at a predetermined place and placed on the bottom of the vehicle. When it is arranged at the bottom of the vehicle, the handle 3 can be extended vertically upward or tilted backward, but by pushing the tip of the handle 3 downward, the front side of the main body 1 is lifted and the wheel 2 , 2 is grounded to the ground. Therefore, the wheels 2 and 2 are rolled and moved to a predetermined position.

If air is supplied from the outside when the four plungers 5 of the hydraulic cylinder are arranged at a predetermined position, the hydraulic oil is supplied to the hydraulic cylinder 4 by the operation of the air pump, and the plunger 5 protrudes upward to move the vehicle. Is lifted.
Here, the air circuit and the hydraulic circuit configured inside the main body of the small jack according to the present invention are not particularly limited, and since they are the same as those in the related art, description thereof will be omitted.

  By the way, the small jack is generally mounted inside a box mounted on the loading platform of a tire service car. Moreover, since the jack according to the present invention is small and light, it can be hooked on the wall of the box. Small convex pieces 9, 9 protrude outward on both sides of the main body 1, and the wheels 2, 2 mounted on both sides of the main body 1 have gaps 25, 25 between the side surfaces of the main body 1.

  FIG. 2 shows a case where the worker 11 carries a small jack in his / her hand to a service car and hooks it on the wall surface 12 of the box. That is, the small jack can be attached to the wall surface 12 without being placed on the floor surface of the loading platform. Therefore, the metal fittings 13 and 13 are attached to the wall surface 12 at a predetermined interval, and the claws 14 and 14 are attached above the metal fittings 13 and 13 at a predetermined interval.

By the way, the both claws 14, 14 are substantially L-shaped, and the two protruding pieces 9, 9 protruding from the side of the main body 1 can be locked to the claws 14, 14. Further, the engagement fittings 13 and 13 are formed with engagement grooves 15 and 15, and the engagement grooves 15 and 15 are engaged with shafts 10 and 10 existing between the main body 1 and the wheel 2. I can do it.
That is, the locking fittings 13 and 13 are fitted into gaps 25 and 25 formed between the side surface of the main body and the wheels 2 and 2, and the shafts 10 and 10 are engaged with the engagement grooves 15 and 15.

  In this way, the convex portions 9 and 9 and the shafts 10 and 10 of the small jack are engaged with the claws 14 and 14 and the locking fittings 13 and 13, respectively, so that they do not fall off the wall surface 12 and are kept in place. It is stably latched. And even if the service car swings as the vehicle travels, the small jack hung on the wall surface 12 does not come off. Here, the interval between both the locking metal fittings 13 and 13 is increased, and the shaft tips protruding from the wheels 2 and 2 are engaged with the engagement grooves 15 and 15 provided in the locking metal fittings 13 and 13. It is also possible.

  FIG. 3 is a specific example showing a shaft structure to which the handle 3 is attached. A shaft 18 is suspended between the side plates 17, 17 constituting the main body 1, and a coil spring 19 is attached to the outer periphery of one side of the shaft 18, and the coil spring 19 biases the rotating socket 16 with a spring force. ing. The rotary socket 16 is concentric with the shaft 18, one side of the shaft 18 protrudes outward through a hole provided in the side plate 17, and the tip of the shaft 18 is engaged with an L-shaped pedal. .

Further, the other end of the shaft 18 is connected to a bolt extending from the bearing 20 by screwing. Therefore, the side end 21 of the rotary socket 16 is sandwiched between the bearing 20 and the tip of the shaft 18 via a bolt. Further, a pin 22 is attached to the side end portion 21, and the pin 22 is fitted in a hole formed in the rotation lock plate 23 attached to the side plate.
Therefore, the rotary socket 16 cannot be rotated and is locked when the pin 22 is inserted into the hole of the rotary lock plate 23.

  FIG. 3B shows a case where the lock is unlocked. However, when the L-shaped pedal 7 is depressed, the shaft 18 is pulled rightward, and at the same time, the rotary socket 16 is also moved rightward. As a result, the pin 22 attached to the side end 21 of the rotary socket 16 is removed from the insertion hole 26 of the rotary lock plate 23, and the rotary socket 16 can rotate. Therefore, the direction of the handle 3 extending from the rotary socket 16 can be changed.

FIG. 4 shows a case where the pin 22 is inserted into the insertion hole 26 provided in the rotation lock plate 23 to position the rotation angle of the rotary socket 16. In the figure, the insertion holes 26 formed with diagonal lines represent the state in which the pins 22 are fitted.
Two pins 22, 22 are attached to the side end 21 of the rotary socket 16, and the two pins 22, 22 are inserted into and locked into insertion holes 26, 26 formed in the rotary lock plate 23.

FIG. 4A shows a case where the handle 3 is tilted and facing forward, and the handle 3 shown in FIG. 5 is located at the position (a).
FIG. 4B shows a case where the handle 3 is standing and the handle 3 shown in FIG. 5 is in the position (b).
FIG. 4C shows the case where the handle 3 shown in FIG. 5 is in the position (c) in a state where the handle 3 is tilted backward.

DESCRIPTION OF SYMBOLS 1 Main body 2 Wheel 3 Handle 4 Hydraulic cylinder 5 Plunger 6 Shaft 7 Pedal 8 Space 9 Protruding piece
10 axes
11 Worker
12 Wall
13 Locking bracket
14 claw
15 Engagement groove
16 Rotating socket
17 Side plate
18 axes
19 Coil spring
20 bearings
21 Side edge
22 pin
23 Rotation lock plate
25 Clearance
26 Insertion hole

Claims (5)

In a small mobile jack with a total weight of less than 30 kg, it has a hydraulic cylinder with a plunger in the front part of the main body, a wheel is attached to the rear part of the main body, and a handle is attached to the rear part of the main body. The handle is swingable in the vertical direction, the handle is locked at a substantially horizontal position facing the front of the main body, and at other positions, and a bed is attached to the main body to unlock the lock. A portable small jack characterized by forming a space in which a hand can enter and grip the handle when it is positioned almost horizontally. The small jack according to claim 1, wherein the handle is locked at a position where it is raised upward and at a position extending obliquely backward, in addition to a substantially horizontal position facing forward. The small portable jack according to claim 1 or 2, wherein a small convex piece projects outwardly on both sides of the main body, and a gap is formed between the wheel and the main body. In a tire service car equipped with a box that can mount a tire attaching / detaching device, a tire balancer device, an air filling machine, etc. and can cover these devices, the side of the main body A tire service car is provided with a claw that engages with a protruding piece projecting outward, and a fitting that fits into a gap formed between the main body and the wheel. The tire service car according to claim 4, wherein the wheel shaft extends outwardly, and a locking fitting is locked to the tip shaft.

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