JPH0444474Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a telescoping pole, and particularly to a telescoping pole suitable for use as a pole for operating an operation handle for operating a cone of a container connecting fitting. .

[Prior Art] Generally, when a large number of containers are loaded on a ship, some of them are stowed in the ship's hold, while others are stowed, for example, in three or four tiers on the deck.

By the way, when containers are stacked on deck in multiple stages, if the containers are simply stacked one above the other, there is a risk that the cargo will collapse due to the shaking of the ship, etc. Showa 61-
There is a method of interconnecting the lower corner caster at the lower end of the upper container and the upper corner caster at the upper end of the lower container using the container connection fittings shown in Publication No. 113587 or Japanese Patent Application Laid-Open No. 113588/1983. It is taken.

FIGS. 13 to 16 show an example of a conventional container connecting fitting 1 of this kind. This container connecting fitting 1 has a lower corner caster 2 at the lower end of the upper container and an upper corner caster 3 at the upper end of the lower container. The metal fitting body 4 placed between
An upper cone 5 is attached to the upper end of the metal fitting main body 4, and is attached to the upper cone 5, which rotates a required amount around the central axis 0 and is locked to the lower corner caster 2. A lower cone 6 is attached to the lower cone 6 which rotates a required amount around the central axis 0 together with the upper cone 5 and is locked to the upper corner caster 3.

Moreover, in the vertical center part of the metal fitting main body 4,
As shown in FIGS. 13 to 16, a grip 7 and an operation handle 8 are provided which project in the longitudinal direction of the container, respectively, and the operation handle 8 is placed in the locked position shown in solid lines in FIGS. 14 and 15. By doing this, both the upper and lower cones 5 and 6 become locked, and by setting the lower cone to the open position shown by the two-dot chain line in FIGS. 14 and 15, the upper cone 5 remains locked. The lower cone 6 is opened, and also as shown in FIGS. 14 and 15.
By setting the upper cone in the open position shown by the dashed line in the figure, the upper cone 5 is opened while the lower cone 6 remains locked, contrary to the above.

By the way, when the upper and lower corner casters 2 and 3 are connected to each other using the container connecting fitting 1, the upper and lower cones 5 and 6 are both locked, as shown by solid lines in FIGS. 13 to 16. The operation handle 8 is therefore in the lock position. From this state, when unloading the upper container, the operation handle 8 is swung to the open position for the lower cone shown by the two-dot chain line in FIGS. 14 and 15. The connection is released and the upper container is lifted in this state. As a result, the container connecting fitting 1 is lifted and unloaded together with the upper container.

By the way, conventionally, the operation handle 8
The operation was carried out by hand by workers using ladders attached to containers stacked on the deck, but this was not only time consuming but also dangerous.

Therefore, recently, it has been proposed to use an operating pole having an operating metal fitting at the tip in order to be able to operate the operation handle 8 from above the deck.

[Problems to be solved by the invention] By the way, the container connecting fitting 1 can be used between the first and second tiers, between the second and third tiers, and between the third tier of containers stacked on deck. and the fourth row, etc.
Since they are arranged between each stage, it is impossible to handle all of these container connecting fittings 1 with one type of operation pole.

Therefore, when using an operating pole, it is necessary to prepare a plurality of types of operating poles with different pole lengths, or to adjust the length by successively connecting connection poles to shorter poles.

However, in the former method, in which multiple types of operating poles are prepared, the operating poles must be replaced according to the height position of the container connecting fitting 1, which is not easy to handle and requires a large space for storage when not in use. There is a problem.

On the other hand, the latter method, which connects the connecting pole, is easier to handle than the former, but it is troublesome to connect the connecting pole, and since the tip pole and the connecting pole are separate, there is a risk of losing the connecting pole. In addition, there is a problem that a large space is required for storage when not in use.

This invention was created in view of the current situation,
To provide a telescoping pole that is easy to handle, has a large proof strength against a force in a tensile direction, and can be made small and stored in a narrow space when not in use.

[Means for solving the problem] The present invention combines a plurality of poles having a tapered cylindrical shape toward the tip and having mutually different diameters in a nested manner, and A telescoping pole whose outer circumferential surface is in contact with the inner circumferential surface of the tip of the outer pole to maintain the extended state at its limit, and which fixes a predetermined pole and the outer pole at the reduced limit. In addition, the innermost pole is provided with an operation fitting at the tip of the innermost pole for operating an operation handle for operating the cone of the container connecting fitting. An unlocking member has a trapezoidal or triangular frame shape with sides gradually approaching toward the upper end, and pulls the operation handle into the grip; An inverted triangular shape provided on the lower surface of the bottom of the unlocking member, which allows the operation handle to be moved when locked. A locking member is inserted between the handle and the grip from above to separate the operation handle from the grip.

[Function] In the telescopic pole according to the present invention, when a predetermined pole is extended with respect to the outer pole, at the extension limit, the outer peripheral surface of the proximal end of the inner pole becomes the inner periphery of the tip of the outer pole. makes contact with the surface and remains in that state. Since this contact surface is a tapered surface, it has a large resistance to the force in the tensile direction, and just by operating the extension,
A straight pole can be obtained by aligning the axes of both poles perfectly. Furthermore, if the base ends of the telescopic poles are brought into contact with a floor surface or the like in the extended state, the impact releases the fixed state between the poles at the extension limit, making it possible to easily reduce the size.

In addition, the fixing means can fix a predetermined pole and the poles outside of it in the reduced limit state, so the length can be easily adjusted in units of the length of the pole fixed by the fixing means, and each pole can be Since they are nested together, it is possible to reduce the storage space when not in use.

In addition, the operating fitting provided at the tip of the innermost pole includes an unlocking member and a locking member,
At least when unlocking the unlocking member,
It has a trapezoidal or triangular frame shape with both sides gradually approaching the top, so simply insert the operation handle and grip into this unlocking member and pull the telescopic pole downward to connect the container. It becomes possible to unlock the metal fittings. In addition, the locking member is provided on the lower surface of the bottom of the unlocking member and has an inverted triangular shape, so that the container can be connected by simply inserting it from above between the operation handle and the grip and pulling the telescopic pole downward. It becomes possible to lock the metal fittings.

[Embodiment] A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an operating pole for operating an operation handle of a container connecting fitting as an example of a telescoping pole according to the present invention. 4 poles 12a, 12b, 1
2c and 12d, with a pole 12d at the tip.
An operating fitting 13 is attached to the tip of the holder.

Each of the poles 12a, 12b, 12c, 12d
As shown in FIG. 2, these poles 12a, 12b, 12c,
The rods 12d are nested together and have a swing-out type structure similar to a fishing rod. A predetermined pole (for example, pole 12b) and a pole outside of it (for example, pole 12a) are such that, at the extension limit, the proximal outer circumferential surface of the inner pole 12b is aligned with the tip inner circumferential surface of the outer pole 12a. As a result, both poles 12a and 12b are temporarily fixed in the extended state, and are prevented from coming off toward the tip side.

On the outer circumference of the base end of the outermost pole 12a, a third
As shown in the figure, a cylindrical male screw member 14 made of resin, for example, is bonded or screwed to the male screw member 14, and a proximal end member 14 made of resin, for example, is attached to the male screw member 14.
5 is screwed and fixed.

In addition, a third
As shown in the figure, female screw members 16, 17, and 18 made of resin, for example, whose diameters are successively smaller in accordance with the diameter of the pole, are bonded or screwed to each other, and these female screw members 16, 17, and 18 are attached to the proximal end. Together with the male screw member 19 integral with the member 15, it constitutes a fixing means for fixing each of the poles 12b, 12c, and 12d in the contracted limit state.

As shown in FIG. 3, the male threaded member 19 is provided at the center of the inner surface of the proximal end member 15 so as to protrude toward the distal end. Diameter male thread portion 19a;
Intermediate male screw member 19 into which the female screw member 17 can be screwed
b, and a small-diameter male threaded member 19c at the end into which the female threaded member 18 can be screwed, forming a three-stage stepped rod shape. Then, by screwing the female screw member 16 into the large diameter male screw portion 19a at the base end, the outermost pole 1
2a and the pole 12b inside thereof are fixed to each other in the contracted limit state, and in this state, the female threaded member 17 is further screwed into the intermediate male threaded portion 19b, so that the three poles 1 including the pole 12c are fixed.
2a, 12b, and 12c are fixed at the contraction limit state. Furthermore, in this state, all the poles 12a, 12b, 12
c and 12d are fixed at the reduction limit state. That is, the operating pole 11 can be expanded and contracted in units of the length of each pole 12a, 12b, 12c, and 12d.

Further, the inner diameter of the female screw members 16 and 17 is the third
As shown in the figure, the inner poles 12c and 12d
The poles 12a, 12b, 12c, and 12d can be disassembled by removing the proximal end member 15 from the male threaded member 14.

The operation fitting 13 provided at the tip of the operation pole 11 having such a configuration includes a rod-shaped attachment member 20 that is attached to the tip of the innermost pole 12d, as shown in FIG. The mounting member 20 has a bottom side 21a, a vertical side 21b rising vertically from one end of the bottom side 21a, an oblique side 21c rising at an angle from the other end of the bottom side 21a, and a vertical side 2
Upper side 21d connecting the upper ends of 1b and oblique side 21c
An unlocking frame 21 having a generally trapezoidal shape is attached thereto.

The bottom side 21a of this unlocking frame 21 is
As shown by the dashed line in FIG. 4, the dimension is set to be longer than the dimension between the outer surfaces of the operation handle 8 and the grip 7 in the lock position, and the upper side 21d is set as shown by the dashed double dot line in FIG. The dimension is set to be approximately the same as the dimension between the outer surfaces of the operation handle 8 and the grip 7 in the open position for the lower cone. Then, by hooking this unlocking frame 21 onto the operation handle 8 in the lock position and the grip 7 and pulling the operation pole 11 downward, the operation handle 8 is guided by the oblique side 21c and swings.
It is adapted to provide an open position for the lower cone.

As shown in FIG. 4, the unlocking frame 21 is fixed to the mounting member 20 in a state offset to the right in the figure, so that force is efficiently transmitted to the operation handle 8 during the unlocking operation. It is becoming more and more like this.

Further, on the lower surface of the bottom side 21a of this unlocking frame 21, there is an innermost pole 12d as shown in FIG.
and a vertical piece 22 depending from the mounting member 20.
A lock frame 22 having a generally rectangular shape is attached from the vertical side 22a and the oblique side 22b connecting the lower end of the vertical side 22a and the bottom side 21a.

The distance between the vertical side 22a and the innermost pole 12d and the mounting member 20 of the lock frame 22 is set slightly larger than the outer surface dimension of the grip 7 of the container connecting fitting 1, so that the outer surface of the grip 7 is By pulling the operation pole 11 downward while in contact with the outer surface of the inner pole 12d, the operation handle 8 in the open position for the lower cone is moved as shown by the dashed line in FIG.
The tip of the lock frame 22 is inserted between the handle 8 and the grip 7, and the temporary fixing means (not shown) for temporarily fixing the operation handle 8 to the open position for the lower cone is released, and the two points shown in FIG. As shown by the chain line, the operation handle 8 can be returned to the lock position by the spring pressure of a spring (not shown) built into the container connecting fitting 1.

Next, the operation of this embodiment will be explained.

When extending the operating pole 11, the innermost pole 12d is pulled out toward the tip. Then, this pole 12d is pulled out to the distal end side relative to the outer pole 12c, and eventually the outer circumferential surface of its proximal end comes into contact with the inner circumferential surface of the distal end of the pole 12c, and further withdrawal is prevented. This state is the innermost pole 1
2d is in a limited extension state, and this pole 12d is
Due to the contact resistance with the pole 12c, it is temporarily fixed in the extended state.

Similarly, the poles 12c and 12d and between the poles 12b and 12a are temporarily fixed in the extended state, resulting in a long operating pole 11 as shown in FIGS. 1 and 2.

By the way, the inner poles 12d, 12c, 12
b and the outer peripheral surface of the proximal end of the pole 12c, 1
Since each pole 12a, 12b, 12c, 12d has a tapered cylindrical shape toward the tip, the contact surface with the inner circumferential surface of the tip of each of the poles 2b, 12a naturally becomes a tapered surface. Therefore, an extremely large proof stress can be obtained in the tensile direction, and each pole 12a,
12b, 12c, and 12d can be made smaller in diameter and thinner. Moreover, each pole 12a, 12b, 12c,
Since the contact surface between the poles 12d is a tapered surface, even if the axial length of the contact surface is shortened, the axes of each pole 12a, 12b, 12c, and 12d can be perfectly aligned in the extended state, and the shafts can be straightened. The operation pole 11 is obtained.

On the other hand, in order to contract the extended operating pole 11, the proximal end of the extended operating pole 11 is brought into contact with the deck or the like. Then, the impact caused Paul 1 to
The temporary fixation caused by the contact resistance between the poles 2a, 12b, 12c, and 12d is released, and the inner poles 12b, 12c, and 12d are accommodated in the outermost pole 12a.

By the way, when extending the operation pole 11,
As mentioned above, since the height positions at which the container connecting fittings 1 are set are different, it is necessary to adjust the length of the operating pole 11 accordingly.

Therefore, in such a case, each female threaded member 1
6, 17, 18 as necessary male screw member 19
to be screwed into. For example, when only the female screw member 16 is screwed onto the male screw member 19, the pole 12b is fixed to the pole 12a in the contracted limit state, and the length of the operating pole 11 can be shortened by the length of the pole 12b. Further, by screwing all the female thread members 16, 17, and 18 onto the male thread member 19, the length of the operating pole 11 can be made the shortest. If the device is stored in this state when not in use, the storage space can be reduced, and the operation pole 11 does not extend even if the operation metal fitting 13 is placed downward, making it easy to handle.

FIG. 5 shows a second embodiment of the present invention, in which, in place of the male threaded member 19 and female threaded members 16, 17, 18 in the first embodiment, a male threaded member 29 whose threaded surface gradually becomes smaller in diameter as it faces upwards. Also, female screw members 26, 27, and 28 are used.

With this configuration, the connection strength between the male threaded member 29 and the female threaded members 26, 27, and 28 in the tensile direction is somewhat reduced compared to the first embodiment, but apart from this, the The same effects as in the first embodiment can be expected.

FIG. 6 shows a third embodiment of the present invention, in which, in place of the male threaded member 19 and female threaded members 16, 17, 18 in the first embodiment, a male threaded member 39 having the same diameter at various places and screwed thereto are used. Female thread member 3
6, 37, and 38 are used.

With this configuration, each female screw member 36, 3
7 and 38 to the male screw member 39 is somewhat troublesome, and the poles 12c and 12d are not connected to the pole 12b.
However, in other respects, the same effects as in the first embodiment can be expected.

7 and 8 show a fourth embodiment of the present invention, in which the proximal member 1 in the first embodiment is shown.
5, male thread member 19, and female thread member 16,1
7, 18, base end member 41, male screw member 4
2. Female thread members 43, 45 and a ring 44 without female threads are used.

That is, the proximal member 41 is
As shown in the figure, it has a cylindrical shape with a predetermined length, and the proximal end member 41 of different lengths is connected to the operating pole 1.
1, so that the actual length of the operating pole 11 can be adjusted.

Further, as shown in FIG. 8, the male threaded member 42 provided at the center of the distal end of the proximal end member 41 includes a large diameter male threaded portion 42a at the proximal end, an intermediate shaft portion 42b, and a male threaded small diameter distal end 42c. It is formed into a stepped rod shape, and the base end large diameter male screw portion 42a has a female screw member 43 fixedly installed inside the base end of the pole 12b.
A ring 4 fixedly installed inside the base end of the pole 12c is attached to the intermediate shaft portion 42b.
4 is attached, and the tip small diameter male threaded portion 42c
A female screw member 45 fixedly installed inside the base end of the pole 12d is screwed into the pole 12d.

The inner diameter of the female screw member 43 is set to be smaller than the outer diameter of the pole 12c, as shown in FIG.
The diameter is set smaller than the outer diameter of d, and the three poles 1
2b, 12c, and 12d have a structure that cannot be disassembled. Then, with the female screw member 43 screwed onto the proximal large-diameter male screw portion 42a and the ring 43 mounted on the intermediate shaft portion 42b, the female screw member 45
By screwing the ring 43 into the small-diameter male threaded portion 42c, the pole 12c can be fixed in the contracted limit state even though the ring 43 is not provided with a female thread.

With this configuration, it is impossible for the pole 12c to be fixed alone in the contracted limit state, and it must always be paired with the pole 12d, and even when four poles 12a, 12b, 12c, and 12d are used, However, the length of each pole can be shortened compared to the case where three poles are used to adjust the telescopic adjustment to three stages. , 12c, 12d can be reduced in size when stored in a reduced state, and the three poles 12b, 12c, 1
Compared to the case where all 2d are provided with female thread members, the fixing work in the contraction limit state is easier.

In the fourth embodiment, the ring 44 is provided on the pole 12c, but as long as the internal thread member 45 is provided on the innermost pole 12d, the ring 44 may be provided on all the other poles 12b and 12c. You can do it like this. For this reason, if the operating pole 11 is configured with five or more poles, for example, it is possible to provide the ring 44 on every other pole.
It can be selected as appropriate depending on the number of expansion/contraction stages of the operating pole 11 required for the work.

Further, in the fourth embodiment, when the base end member 41 is attached to the base end of the outermost pole 12a, the male threaded member 42 is fixed in position inside the base end of the pole 12a. Member 42
may be fixed at a longitudinally intermediate portion of the pole 12a, or may be fixed at a longitudinally intermediate portion of the proximal end member 41.
The same applies to the first to third embodiments.

FIG. 9 shows a fifth embodiment of the present invention, in which a fixing means is arranged at the tip of each pole 12a, 12b, 12c, and 12d so that the poles can be fixed in the contracted limit state.

That is, each pole 12a, 12b, 12c,
As shown in FIG. 9, male thread members 51, 52, 53, and 54 are provided on the outer surface of the tip of 12d, respectively. The male thread members 53 and 54 are connected by the member 56 and the female thread member 57, respectively.

Even with this configuration, the same effects as in the first embodiment can be expected.

FIG. 10 shows a sixth embodiment of the present invention.
A stopper 61 and male threaded members 62, 63, 64 are attached to the outer tip of each pole 12a, 12b, 12c, 12d, and a female threaded member 65 is attached to the stopper 61 and male threaded members 62, 63.
66 and 67 constitute a fixing means.

With this configuration, the female screw members 65, 6
6 and 67 are stoppers 61 or male threaded members 6
2, 63, there is no risk of loss, and the same effects as in the first embodiment can be expected.

11 and 12 show a seventh embodiment of the present invention, in which an unlocking fitting 74 and a locking frame 22 are used instead of the operating fitting 13 in the first embodiment.
An operating fitting 73 consisting of the following is used.

That is, the unlocking fitting 74 is
As shown in FIG. 12 and FIG. 12, a base member 76 is fixed to the tip of the pole 12d via a mounting member 75 and has a lock frame 22 attached to its lower surface. 77 is fixed, and a first arm 79 that is constantly pressed by a spring 78 in the direction of recessing into the guide tube 77 is slidably arranged on the guide tube 77 .

One end of a second arm 80 is pivotally attached to the tip of the first arm 79, as shown in FIGS. 11 and 12, and the other end of the second arm 80 is
a third member having one end pivotally connected to the other end of the base member 76;
It is pivotally connected to the other end of the arm 81. Each arm 79, 80, 81 is normally square shaped as shown in FIG. By pulling the metal fitting 74 downward, each arm 79, 80, 81 becomes triangular as shown in FIG. 12, and the operation handle 8 can be swung to the open position for the lower cone. There is.

With this configuration, the operation fitting 73 can be made smaller, and the operation handle 8 can be made smaller.
can be operated reliably.

[Effects of the invention] As explained above, the telescoping pole according to the invention combines a plurality of poles that have a tapered cylindrical shape toward the tip and have mutually different diameters in a nested manner, and A telescoping pole that maintains a state of limited extension by bringing the outer circumferential surface of the proximal end of a predetermined pole into contact with the inner circumferential surface of the distal end of the pole outside the pole, and which maintains the predetermined pole and the pole outside the predetermined pole at the limit of contraction. Since it is equipped with a fixing means to fix it in the state,
It is easy to handle, has a large resistance to tensile forces, and can be made small and stored in a narrow space when not in use.

In addition, the operating fitting provided at the tip of the innermost pole includes an unlocking member and a locking member,
Since the container can be operated simply by pulling the telescopic pole downward both when unlocking and when locking, the container connecting fitting can be easily and reliably operated remotely.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a telescoping pole showing an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a configuration diagram of the base end of the telescoping pole, Fig. 4 is a detailed view of the operating fitting, and Fig. 5 The figure is a diagram corresponding to Figure 3 showing the second embodiment of the present invention,
Figure 6 is a diagram equivalent to Figure 3 showing the third embodiment of the present invention, Figure 7 is a diagram equivalent to Figure 2 showing the fourth embodiment of the invention, and Figure 8 is an enlarged view of the main part of Figure 7. The third
Fig. 9 is a block diagram of main parts showing the fifth embodiment of the present invention, Fig. 10 is a block diagram of main parts showing the sixth embodiment of the invention, and Fig. 11 is a block diagram of main parts showing the sixth embodiment of the invention. A view corresponding to FIG. 4 showing an example, FIG. 12 is an explanatory diagram showing the operating state of the operating fitting shown in FIG. 11, FIG. 13 is a front view of the container connection fitting, FIG. 14 is a plan view of FIG. 13, 15 is a bottom view of FIG. 13, and FIG. 16 is a right side view of FIG. 13. 1...Container connection fitting, 7...Grip, 8
...Operation handle, 11...Operation pole, 12a, 12b, 12c, 12d...Pole, 13,73...Operation fitting, 16,17,1
8, 26, 27, 28, 36, 37, 38, 4
3, 45, 55, 56, 57, 65, 66, 67
... Female thread member, 19, 29, 39, 42, 5
1, 52, 53, 54, 62, 63, 64... Male thread member, 19a, 42a... Base end large diameter male thread part, 19b... Intermediate male thread part, 19c, 42c...
...Small diameter male thread at the tip, 44...Ring, 61...
Stotspa.

Claims (1)

[Claims for Utility Model Registration] 1. A plurality of poles having a tapered cylindrical shape and having mutually different diameters are combined in a nested manner, and the outer circumferential surface of the proximal end of a predetermined pole is The telescopic pole is configured to maintain the extended state by contacting the inner peripheral surface of the tip of the outer pole, and is equipped with a fixing means for fixing a predetermined pole and the outer pole in the extended state. At the same time, the tip of the innermost pole is provided with an operation fitting for operating an operation handle for operating the cone of the container connecting fitting. An unlocking member that has a trapezoidal or triangular frame shape that gradually approaches each other and draws the operation handle toward the grip; and an inverted triangular-shaped unlocking member that is provided on the bottom surface of the bottom of the unlocking member and is between the operation handle and the grip when locked. A locking member inserted into the handle from above to separate the operation handle from the grip. 2. The fixing means includes a male screw member provided inside the base end of the outermost pole and protruding toward the tip;
and a female threaded member provided inside the base end of each pole other than the outermost pole, and each of the female threaded members can be screwed sequentially from the female threaded member to the male threaded member of the outermost pole. A telescoping pole according to claim 1 of the utility model registration claim. 3. Practical use characterized in that the male threaded member is formed in a stepped shape in which the diameter of the male threaded member becomes progressively smaller toward the tip, and each female threaded member can be screwed into each of the male threaded portions, respectively. Telescopic pole according to claim 2 of patent registration. 4. The fixing means shall include a male threaded member provided on the outer surface of the tip of each pole, and a female threaded member that is attached to the outer surface of the tip of each pole other than the innermost pole and screwed into each of the male threaded members. A telescoping pole according to claim 1 of the utility model registration claim, characterized by: 5. The fixing means includes a male threaded member provided on the outer surface of the tip of each pole, and a required number of female threaded members that are simultaneously screwed into the male threaded member of a predetermined pole and the male threaded members of the poles outside the predetermined pole. A telescoping pole according to claim 1 of the utility model registration claim.