JPS62255399A - Handle for jack - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a jack handle for operating a jack for lifting, for example, a vehicle body.

(Prior Art) Conventionally, this type of jack has a jack main body equipped with a support arm for lifting and supporting a vehicle body, etc., and a drive part (hydraulic cylinder) attached to the jack main body to raise the support arm. and a rod-shaped jack handle that drives the jack handle.By reciprocating the jack handle in the vertical direction, a hydraulic cylinder is driven and the support arm is raised. For this reason, relatively long jack handles have been used because the longer the overall length, the easier the reciprocating motion in the up and down direction.

(Problem to be Solved by the Invention) However, in the jack having the above structure, the length of the jack handle is considerably longer than the length of the jack itself, so when storing the jack in a storage case or carrying it around, the jack is difficult to handle. There was a problem with the handle getting in the way.

For this reason, it is conceivable to make the jatsuki handle removable from the jatsuki body, and to remove the jatsuki handle from the jatsuki body when storing and carrying it, but even so, the jatsuki handle itself Because of its long length, it was inconvenient to store and carry.

(Means for Solving the Problems) The jack handle of the present invention has one end linked to a drive unit that drives a support arm provided on the jack main body, and rotates vertically about the one end. A jack handle that drives the driving section to at least raise the support arm by repeating the operation, the gripping rod having an insertion opening at the tip and a hollow interior; It is removably connected to the drive part of the jack body,
The rear end side is configured with a sliding rod that is inserted into the inside of the gripping rod from the insertion opening of the gripping rod and is provided to be slidable with respect to the gripping rod, and the gripping rod is provided with an engaging portion. ,
A plurality of engaged parts that engage with the engaging part are provided on the sliding rod at predetermined intervals in the sliding direction.

(Function) The jack handle is detachable from the jack main body, and the jack handle is composed of a gripping rod and a sliding rod, and the gripping rod has an engaging portion. The sliding rod is provided with one or more engaged parts that engage with this engaging part.

As a result, when the jack handle is not in use,
To shorten the overall length of a jack handle by engaging an engaging part and one engaged part with a sliding rod stored in a gripping rod. On the other hand, when in use, the engaging part and another engaged part are engaged with each other with the sliding rod pulled out from within the gripping rod, and the entire length of the jack handle is extended to a length that is easy to work with. .

(Example) Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment 1] Figs. 1 and 2 show a jack handle according to this example, and Fig. 3 shows the overall structure of a jack to which this jack handle is connected.

First, the overall structure of the jack will be explained with reference to FIG.

In the same figure. , 1 is the jack body, and 2 is the jack handle.

The jack main body 1 includes a support arm 3 that lifts and supports the bottom wall of an automobile, for example, and a support arm 3 that extends at least L.
It is equipped with a hydraulic cylinder (not shown) for raising the cylinder. Wheels 4a and 4b are attached to the front and rear walls of the jack body 1, respectively, so that the jack body 1 can be easily moved. Furthermore, a short connecting rod 5 for connecting the tip of the jack handle 2 is provided at the rear of the jack main body 1. The connecting short rod 5 is formed into a cylindrical body with an opening 6 at the rear end, and the front end 5a is rotatably supported on the jack body 1 and linked to a hydraulic cylinder in the jack body 1. There is. Further, a T-shaped engagement groove 7 is provided from the upper end edge of the opening 6 toward the front end portion 5a.
is formed.

By connecting the tip of a jack handle 2, which will be described later, to this short connecting rod 5 and reciprocating it in the vertical direction,
The hydraulic cylinder operates to raise the support arm 3 (to the position indicated by the two-dot chain line in FIG. 3).

Next, the jack handle 2 will be explained with reference to FIGS. 1 to 7.

The jack handle 2 is composed of a gripping rod lO and a sliding rod 20.

The gripping rod 10 is formed into a rod-like cylindrical body, and a gripping member 12 made of a rubber material, a synthetic resin material, etc. is attached to the rear end thereof, and the sliding rod 20 is inserted into the tip thereof. An insertion port 13 is formed.

A through hole 14 (mainly refer to FIG. 2 below) is provided in the outer circumferential wall near the insertion port 13, and a cylindrical support base 15 is provided to surround this through hole 14. . An opening 17 is formed in the F surface 16 of the support base 15, and a retaining projection 18 is inserted into the opening 17 from above at f, 'l 1 ' 7. The retaining protrusion 18 is supported within the support base 15 by having its upper end connected by a pin 32 to a cylindrical knob 33 externally fitted onto the support base 15 from above. The distal end portion of the retaining protrusion 18 supported in this manner is a large diameter portion 30 having a stepped portion 19. This large diameter portion 30 is inserted into the through hole 14 provided in the gripping rod 10, and its tip end extends into the inside of the gripping rod 10 to a suitable depth. Further, the tip of the large diameter portion 30 has a tapered surface 31 with a chamfered peripheral edge. A spring 35 is installed inside the support base 15 between the upper surface 16 of the support base 15 and the step 19 of the engagement protrusion 18 so as to be fitted onto the retaining protrusion 18 .

The retaining protrusion 18 is always urged downward by the spring 35, and is configured such that the tip of the large diameter portion 30 always protrudes into the interior of the gripping rod 10.

On the other hand, the sliding rod 20 includes a sliding portion 21 that is slidably inserted into the gripping rod 10, and a sliding portion 21 that extends from the tip of the sliding portion 21 with a slight bend relative to the sliding portion 21. connecting part 22
It is made up of.

The connecting portion 22 is a part that is inserted and connected to the short connecting rod 5 of the jack body 1, and the outer peripheral wall thereof has a retaining pin 23 that engages with the engaging groove 7 formed in the short connecting rod 5. is provided. Does it engage with this locking bin 23? The engagement with lj 7 prevents the jack handle 2 from being accidentally removed from the short connecting rod 5.

The sliding portion 21 is formed to have an outer peripheral shape approximately equal to or slightly smaller in diameter than the inner peripheral shape of the gripping rod 10 so that it can be inserted into the inside of the gripping rod 10 . On the outer peripheral wall of the sliding part 21,
Retaining holes 25 and 25 are provided near both ends thereof. These two retaining holes 25.25 are arranged so as to be located in a straight line along the longitudinal direction of the sliding part 21, and their inner shape is similar to that of the through hole 14 formed in the gripping rod 10. It is formed to match the inner shape of the

The sliding portion 21 of the sliding rod 20 configured as described above is inserted through the insertion opening 13 of the gripping rod 10, and the sliding portion 21 is inserted into one of the retaining holes 25 and 25 formed near both ends of the sliding portion 21. One of the engagement holes 25 is aligned with the through hole 14 formed in the gripping rod 10, and the large diameter portion 30 of the engagement protrusion 18 is inserted into the engagement hole 25.
to rush into. In this case, since the tip of the large-diameter portion 30 is formed into a tapered surface 31, the large-diameter portion 30 can enter the engagement hole 25 easily and smoothly. This results in
The sliding rod 20 and the gripping rod 10 are fixed at a constant length. At this time, by engaging the engaging hole 25 provided on the far side of the sliding part 21 from the connecting part 22 and the through hole 14 of the gripping rod 10 with the engaging protrusion 18, the sliding rod 20 can be attached to the gripping rod. The state in which it is pulled out the longest from 10, that is, the state in which it is connected to the jack body l (the state shown in Fig. 3)
It can be done. In addition, by engaging the engagement hole 25 provided on the connecting portion 22 side of the sliding portion 21 and the through hole 14 of the gripping rod 10 with the engaging protrusion 18, the sliding rod 20 can be moved inside the gripping rod 10. (shape B indicated by the solid line in FIG. 1).

In this way, when changing the jack handle 2 from a short state to a long state or from a long state to a short state, pull up the knob 33 and engage one of the engagement protrusions 18 and the sliding rod 20. Release the engagement state with the hole 25, and in this state, slide the sliding rod 20 as appropriate in the direction of extension (direction P in FIG. 1) or direction of retraction (direction Q in the same figure) with respect to the gripping rod 10. It is only necessary to align the through hole 14 of the gripping rod 10 with the other retaining hole 25 of the sliding rod 20. In other words, by aligning the through hole 14 with the other retaining hole 25 of the sliding rod 20, the sliding This is because the retaining protrusion 18 that was in contact with the outer circumferential wall surface of the moving rod 20 automatically enters the other retaining hole 25 due to the biasing force of the spring 35.

In this case, since it is not possible to directly visually check the alignment between the through hole 14 and the retaining hole 25, a mark 40 is provided on the outer peripheral wall near the insertion opening of the gripping rod 10, and a mark 40 is placed on the outer peripheral wall of the sliding rod 20 at an appropriate position. A mark 41 is provided corresponding to each retaining hole 25, and by aligning these marks 40 and 41, the through hole 14 of the gripping rod 10 and the engagement hole 25 of the sliding rod 20 are aligned. Just leave it there.

Therefore, when using the jack handle 2 configured as described above, the sliding rod 20 is fixed in the extended state, and in this state, the connecting portion 22 is inserted and connected to the short connecting rod 5 of the jack main body 1. . At this time, the retaining pin 23 is engaged with the longitudinal groove of the T-shaped engagement groove 7 from the opening edge, and the jack handle 2 is moved to the right or left while it is in contact with the actual length of the engagement groove 7. By rotating the engagement pin 23 in the direction, the engagement pin 23 is engaged with the horizontal groove portion of the engagement groove 7. This prevents the jack handle 2 from being accidentally removed from the short connecting rod 5. By reciprocating the jack handle 2 connected in this way in the vertical direction, the support arm 3 of the jack main body 1 can be raised by the hydraulic cylinder linked thereto. In addition, in order to return the support arm portion 3 raised in this way to its original state, the jack main body 1
By operating the relief valve 1a attached to the support arm 3, the support arm 3 can be lowered slowly by its own weight. After this, the jack handle 2 is removed from the short connecting rod 5, the sliding rod 20 is inserted into the gripping rod 10 the deepest, and both rods 10 and 20 are fixed, and stored in this state until the next use. do.

In the above embodiment, the engaging holes 25 are provided only at two locations near both ends of the sliding portion 21, but for example, a plurality of retaining holes 25 may be provided at a certain interval between these holes to prevent the jacking. The entire length of the handle may be extended in several stages.

[Embodiment 2] This example is shown in FIGS. 4 and 5, in which retaining holes 25 are provided in the outer peripheral wall of the sliding portion 21 near both ends of the sliding portion 21.
．． A guide groove 45 is provided to communicate between the guide grooves 25 and 25, and a guide protrusion 46 that slides within the guide groove 45 is provided at the tip of the retaining protrusion 18 attached to the gripping rod 10. be.

The other structure is the same as that of the first embodiment, and therefore the same members are given the same reference numerals.

In this way, the positional relationship between the engagement hole 25 and the engagement protrusion 18 does not shift in the circumferential direction, and moreover, the engagement protrusion 18
Since the position does not go too far, alignment becomes easy. Therefore, the landmark 40.41 as shown in Example 1
is also no longer necessary.

(Effects of the Invention) As explained above, according to the jack handle of the present invention, when in use, the sliding rod can be pulled out from the gripping rod and the overall length can be lengthened, and when not in use, the sliding rod can be gripped. The overall length can be shortened by storing it inside the rod. Therefore, it can be stored in a small space and is convenient to carry.

[Brief explanation of drawings]

1 to 3 show Embodiment 1 of the present invention, FIG. 1 is an overall perspective view of a jack handle, and FIG. 2 shows a retaining protrusion attached to a gripping rod and a sliding rod. 3 is a cross-sectional view showing the state in which the jack handle is connected to the jack body; FIG. 3 is an overall perspective view of the jack handle connected to the jack main body; FIGS. FIG. 5 is an overall perspective view of the jack handle, and is a cross-sectional view showing a state in which the locking protrusion attached to the gripping rod and the locking hole provided in the sliding rod are locked together. 1... Jacket main body 2... Jacket handle 3... Support arm part 5... Short rod for connection 10...
・Grip rod 13...Insertion port weight 4...Through hole
15...Support base 18...Engagement protrusion 2
o...Sliding rod 21...Sliding part 22...Connection part 25...Engagement hole 33...Knob part 35
... Spring 45 ... Guide groove 46 ... Guide projection Fig. 2 Fig. 5

Claims (1)

[Scope of Claims] 1) One end is linked to a drive section that drives a support arm provided on the jack body, and the drive section is driven by repeating vertical rotation around the one end. A handle for a jack that at least moves a supporting arm portion upwardly, the handle comprising: a gripping rod having an insertion opening at its tip and a hollow interior; and a sliding rod whose rear end side is inserted into the inside of the gripping rod from the insertion opening of the gripping rod and is slidably provided with respect to the gripping rod, and the gripping rod has an engaging portion. 1. A jack handle, wherein a plurality of engaged parts that engage with the engaging part are provided on the sliding rod at predetermined intervals in a sliding direction.