JPH09202600A - Operating tool of jack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve housing performance of a tool by forming a handle into an L shape, and forming fitting holes for an inserting parts of an operating lever on the center part of the horizontal part of the handle and on the not bent end of the horizontal part. SOLUTION: A operation tool 1 is provided with an engaging part 2 to be engaged with an input shaft of a jack on the tip, and it is constituted of an operating lever 4 provided with an inserting part 3 for a handle 5 on the other end, and the handle 5. The handle 5 is formed into an L shape, and a fitting hole 17 into which the inserting part of the operating lever 4 is to be fitted is provided in the center part of a horizontal, part 18. A flat short cylindrical body 21 is provided on the end on the opposite side to a vertical part 19 of the horizontal part 18 of the handle 5, and a second fitting hole 20 is formed. The operating lever 4 is constituted of short levers 6 to 9 having the circular section and the length in the range of 20 to 30cm. An engaging part 2 to be engaged with a jack input shaft is formed on one end of the short lever 6. The short levers 6 to 9 can be connected by connecting ends 10 and the connecting cylinders 11. In respective short levers 6 to 9, the inserting parts 3 can be directly fitted to the fitting holes 17, 20 of the handle 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating tool used when manually operating a jack.

[0002]

2. Description of the Related Art A separate operating tool is used to operate a jack. For example, when replacing the tires of a car, place the jack under the chassis, engage the operating tool with the jack, and operate the operating tool in a convenient place to move the jack cylinder up and down. Well done.

For example, as shown in FIG. 7, a jack operating tool 51 used when replacing a tire of an automobile has a substantially T-shape, and an engaging portion 52 at the tip is used as an input shaft of the jack 70. The cylinder of the jack is moved up and down by engaging and turning the handle 53 on the base end side.

More specifically, the conventional operating tool 5
The reference numeral 1 includes an operating rod 55 having an engaging portion 52 at the tip and an inserting portion 54 at the base end, and an L-shaped handle 53. Further, the operating rod 55 is composed of two relatively long members each having a tip rod 56 and a base rod 57 on the base end side that are detachably connected to each other in a linear direction and each have a length of about 50 cm. Then, at the time of use, the front end rod 56 and the base end rod 57 are connected with a screw 61, and the insertion portion 5 of the base end rod 57 is connected.
4 is inserted into a fitting hole 59 formed in the center of the horizontal portion 58 of the handle 53, and the horizontal portion 58 or the vertical portion 60 bent in an L shape is gripped and turned. Further, when not in use, it is disassembled into three members of a tip rod 56, a base rod 57, and a handle 53 and stored.

[0005]

However, in the conventional jack operation tool described above, the fitting hole 59 into which the insertion portion 54 is inserted is formed in the center of the horizontal portion 58 of the L-shaped handle 53. Therefore, the handle is rotated by a couple of forces having a radius approximately half the length of the horizontal portion 58, and even if the vertical portion 60 is held in the hand and turned, a large force is not generated, and therefore the weight is to be lifted, It took a lot of power, and it was difficult or impossible for a weak person like a woman to work.

Further, the operating rod 55 is composed of two relatively long tip rods 56 and proximal rods 57. In the combination of these, the operating tool can be used in a narrow space or in a wide space, or the operating tool is used. It was not enough to properly change the length of the operating rod 55 according to the place where it is difficult to do.

Further, the conventional one is a disassembled tip rod 56.
50 cm when stored together with the base rod 57
However, it was not advantageous in terms of storability.

[0008]

In order to solve the above-mentioned problems, an operating tool of the present invention has an operating rod having an engaging portion for engaging an input shaft of a jack at its tip, and the inserting portion is fitted with the operating rod. By having an L-shaped handle having a fitting hole, the fitting hole is formed at the center of the horizontal portion of the handle and the non-bent end of the horizontal portion.
The means for solving the above-mentioned problems is adopted.

In addition to the above construction, the operating rod is composed of three or more short rods which are detachably connected to each other in the axial direction, and all the short rods are the same except the short rod having the engaging portion. It is preferably configured in a shape.

In addition to the above construction, each of the short rods has at one end a connecting end having a spherical locking projection urged outwardly on the outer surface, and at the inner surface, the locking. It is further preferable that the other end has a connection tube into which the connection end having the protrusion locking hole is inserted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 6 show one of the preferred embodiments of the present invention, in which an operating tool 1 has an engaging portion 2 for engaging an input shaft of a jack J at a tip end thereof. It is composed of an operating rod 4 having an insertion portion 3 and an L-shaped handle 5 having fitting holes 17 and 20 into which the insertion portion 3 is fitted.

The operating rod 4 has a circular cross section and a length of 2
It is composed of four short rods 6, 7, 8, 9 of about 0 to 30 cm. The first rod 6 has an engaging portion 2 for engaging the input shaft of the jack J at the tip, The base end has a connection end portion 10 to the other short rods 7, 8, and 9.
In particular, in the present embodiment, as shown in FIG. 2, the connecting end portion 10 has two parallel straight lines formed by cutting off a part of the peripheral surfaces facing each other around the central axis of the body portion 23 having a circular cross section. Has a flat shape in which a long side and a short side connecting the long sides are arcuate bulges outward (hereinafter, flat shape).

Further, the other three second short rods 7, the third short rods 8 and the fourth short rods 9 are all formed in the same shape, and the base end thereof has the first short rod. A connecting end portion 10 having the same shape as the rod 6 is formed, and a connecting cylinder 11 into which the connecting end portion is fitted is formed at the tip.

Further, one flat surface 22 of the connecting end portion 10 is arranged such that the locking projection 15 made of a ball projects a part thereof to the outside and is biased outward by a spring 16 buried below the locking projection 15. A locking hole 14 is formed at a predetermined position on the inner surface 22 of the connecting cylinder 11 so that the locking projection 15 elastically locks when the connecting end 10 is inserted into the inner peripheral surface 12.

Then, any one of the three second short rods 7, third short rods 8 and fourth short rods 9 formed in the same shape is connected to the connecting cylinder 11 and the other short rods 6, 7, 8 are provided. , 9 are inserted to connect the four short rods 6, 7, 8, 9 to each other. For example, the connection end portion 10 of the first short rod 6 is connected to the connection cylinder 11 of the second short rod 7, and the connection end portion 1 of the second short rod 7 is connected.
By inserting 0 into the connecting cylinder 11 of the third short rod 8 and the connecting end portion 10 of the third short rod 8 into the connecting cylinder 11 of the fourth short rod 9, respectively, four short rods 6, 7 , 8 and 9 can be connected.

In this connection, when the connecting end portion 10 is inserted into the connecting cylinder 11, the locking protrusion 15 of the connecting end portion 10 is connected to the connecting cylinder 1.
After being pressed into the inner peripheral surface 12 of the No. 1 and immersed, when it overlaps with the locking hole 14, the locking projection 15 projects by the urging force of the spring 16 and is locked by the locking hole 14 so that the connection is simply made. Simply insert the connecting end 10 into the connecting tube 11 to connect to each other,
By simply pulling out the connecting end 10 from the connecting tube 11, the engagement between the locking projection 15 and the locking hole 14 is released, and the connected state is released. Further, in the present embodiment, the flat surface 2 of the connection end 10 is
The step between 2, 22 and the body portion 23 serves as a stopper 24, and the end surface 25 of the connecting cylinder 11 abuts against the stopper 24 to stop, so that a reliable and easy connection can be achieved.

The connection ends 10 of the four short rods 6, 7, 8, 9 also serve as the insertion portions 3 inserted into the fitting holes 17 of the handle 5.

On the other hand, the handle 5 is composed of a straight horizontal portion 18 having a circular end face and a vertical portion 19 provided at the end of the horizontal portion 18 and bent into an L-shape. The first fitting hole 17 into which each connection end 10 of the short rods 6, 7, 8, 9 of the book is inserted, and the second fitting at the end of the horizontal part 18 opposite to the vertical part 19. The hole 20 is formed.

In the present embodiment, the first fitting hole 17 is formed by flattening the center of the horizontal portion 18 and piercing the flattened portion in the same shape as the outer shape of the connecting end 10. There is.

The second fitting hole 20 is formed by a short cylindrical body 21 having a flat end face and projecting from the end of the horizontal portion 18.

The operating tool 1 of the present embodiment configured as described above has only the short rod 6 or the short rods 6, 7, 8, 9 depending on various conditions such as the size of the place to be used and operability. Connect three or four, or four, and insert the insertion portion 3 at the base end thereof into the first fitting hole 17 at the center of the handle 5 or the second fitting hole 20 at the end so as to form a horizontal portion. 18 or vertical part 1
The cylinder of the jack J is moved up and down by gripping and turning 9.

Usually, as shown in FIG. 3, by inserting the insertion portion 3 into the first fitting hole 17 in the center and turning the handle 5, the handle 5 can be efficiently rotated, and when a heavy object is lifted, When operated by a weak person such as a woman, as shown in FIG. 4, a large couple force is generated by inserting the insertion portion 3 into the second fitting hole 20 at the end and rotating the handle 5 to operate. Can be easily rotated by.

In particular, in this embodiment, the short rods 6, 7,
By inserting the flat connecting end 10 into the flat connecting tube 11 and connecting the connecting means 8 and 9 as described above, it is possible to idle around these connecting points when the operating rod 4 rotates. There is an effect that there is no inconvenience.

Further, in the above embodiment, the short rods 6, 7,
Although eight and nine are four, other three or five or more may be used.

Furthermore, in the above embodiment, the short rod 6,
Locking hole 1 formed on the connecting tube 11 for attaching / detaching 7, 8, 9 to each other
4 and the locking projection 15 urged by the spring 16 provided at the connection end portion 10 are adopted, so that the connection state is simple and reliable, and the connection state is easy, and the attachment / detachment is easy. Is not limited to this means.

[0027]

As described above, according to the present invention, by forming the two fitting holes at the center and the end of the handle, the weight of the object to be lifted, the person operating the operation, etc. It is possible to use the fitting holes in two places. That is, when the object to be lifted is heavy or operated by a weak person such as a woman, the operation tool can be easily operated by inserting the insertion portion into the fitting hole at the end. . Further, when it is not necessary, it also serves as an operating tool that can be operated efficiently by inserting the insertion portion into the central fitting hole as in the conventional case.

When a plurality of short rods which are detachable in the axial direction from each other are used as the operating rods,
It is convenient to disassemble and store, and it becomes an operation tool far superior to conventional ones in terms of storability, and when all the short rods other than the short rod having an engaging part are configured in the same shape. Can reduce the production cost and is also convenient for supplementing when parts are lost or lost.

Furthermore, the connecting rods are connected to each other by connecting pipes formed at the ends of the connecting rods, and connecting ends inserted in the connecting pipes. A connecting cylinder having a connecting end having a spherical locking protrusion urged toward the outer surface at one end and having the connecting end having the locking hole of the locking protrusion formed on the inner surface. If the structure is provided at the other end, it can be connected securely by inserting it with a simple structure, and the connected state can be released by simply pulling it out.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a connection end portion of the above embodiment.

FIG. 3 is a side view showing an example of use of the embodiment.

FIG. 4 is a side view showing another example of use of the embodiment.

FIG. 5 is a cross-sectional view of a connection portion of the above embodiment.

FIG. 6 is a sectional view taken along line AA of FIG.

FIG. 7 is a side view of the prior art.

[Explanation of symbols]

 1 Operation Tool 2 Engagement Part 3 Insertion Part 4 Operation Rod 5 Handle 6 Short Rod 7 Short Rod 8 Short Rod 9 Short Rod 10 Connection End 11 Connection Cylinder 12 Inner Surface 14 Locking Hole 15 Locking Protrusion 16 Spring 17 Fitting hole 18 Horizontal part 19 Vertical part 20 Fitting hole

Claims (3)

[Claims] 1. An operating rod having an engaging portion at an end for engaging an input shaft of a jack, and an L-shaped handle having a fitting hole into which the inserting portion is fitted. An operating tool for a jack, characterized in that fitting holes are respectively formed in the center of the horizontal portion and the end portion of the horizontal portion which is not bent. 2. The operating rod comprises three or more short rods that are detachably connected to each other in the axial direction, and all the short rods except the short rod having the engaging portion have the same shape. Operation tool for the jack described. 3. Each of the short rods has at one end a connecting end having a spherical locking protrusion urged outwardly on the outer surface, and has an inner surface for locking the locking protrusion. The operating tool for a jack according to claim 2, further comprising a connection tube at the other end into which the connection end portion having the is formed is inserted.