JPS584557Y2 - telescopic ladder toy - Google Patents

Description

[Detailed description of the invention] This invention relates to an extendable ladder toy, in which the sliding ladder can be extended or contracted from the base ladder by rotating the handle.
The purpose of the present invention is to provide a ladder toy that is safe even when forced, such as by allowing the sliding ladder itself to be directly extended or contracted manually.

To explain the present invention with reference to the embodiment shown in the drawings, 1 is a base ladder, a groove track 2 is provided in the central longitudinal direction of the inner bottom plate, and a sliding ladder 3 has a reverse groove portion 4 formed on the bottom surface of the base ladder. 5 is an overlapping device that is fitted over the track 2 so as to be slidable inside the base ladder; 5 is an overlapping device that is fitted over the groove track 2 so as to be slidable; Sliding ladder 3 on curved edge 6
The rear end edge 7 is attached with a small screw to connect the sliding ladder and the overlay 5. Reference numeral 8 is a threaded rod formed by twisting a flat rod of the required width. Through hole 9 provided in the front and rear walls of the
is inserted into the grooved raceway 2 as shown in FIG. A coil spring 12 is fitted that presses the washer against the inner wall surface of the superposition.

13 is a washer having a round hole that is fitted between the other end of the coil spring and the inner wall surface of the superposition; 14 is a shaft portion formed at the rear of the spring bar; and 14 is a shaft portion formed at the rear end of the base ladder. 15, and a handle 16 is attached to the rear end of the shaft.

Since the present invention is configured as described above, the handle 16
When the washer 11 is rotated, the threaded rod 8 rotates, so the washer 11 fitted onto the threaded rod moves on the threaded rod as the threaded rod rotates.As the washer 11 moves, the overlay 5 moves together with the washer. When the sliding ladder 3 connected to the superposition is moved along the groove track, and therefore the sliding ladder 3 which has been contracted by being pulled inward of the base ladder is to be extended as shown in FIG. , by rotating the handle 16 clockwise, the sliding ladder will extend from the base ladder,
If you do not want to retract the extended ladder into the base ladder again, simply rotate the handle 16 in the opposite direction to the previous one, and the sliding ladder will be retracted into the base ladder and contracted. This operation is similar to that of a conventional telescopic ladder. The operation is similar to that of conventional sliding ladders, but the difference from conventional sliding ladders is that a long-hole washer 11 is fitted onto the threaded rod, and this washer is propelled by the rotation of the threaded rod. When the sliding ladder is extended by rotating the handle 16 using this mechanism,
Even if its extension is inhibited for some reason, the rotation of the handle 16 is not inhibited because the washer 11 rotates within the small box, and the sliding ladder can be slid directly by hand with the handle fixed. Even when the sliding ladder is moved, the washer 11 moves on the tension rod while rotating, so the sliding ladder can be freely expanded and contracted with respect to the base ladder.

Therefore, it will not break even if operated by a child, and there is no need to worry about it being easily broken and becoming unable to extend or contract, unlike conventional telescoping levers.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a side view showing the main parts in cross section, Fig. 2 is a plan view, and Fig. 3 is an exploded perspective view showing the push rod and the chief minister. be. 1... Base ladder, 2... Groove track, 3...
...Sliding ladder, 4...Reverse circulation groove, 5...
... Senior minister, 6... Bent edge, 7... Rear end edge, 8... Threaded rod, 10... Long hole,
11...Washer, 12...Coil spring,
13...Washer, 16...Handle.

Claims (1)

[Scope of utility model registration request] A groove track is provided inside the base ladder in the longitudinal direction, an overlay is slidably fitted inside the groove track, and a bent piece provided at the rear edge of the overlay is fitted with a groove inside the base ladder. Attach the rear end of the sliding ladder that slides along one side, and insert a flat rod of the required width into the inside of the grooved track to form a round hole in the front and rear walls of the stack. A washer with a long hole that matches the cross section of the threaded rod and a coil spring that presses the washer against the inner wall of the stack are fitted on the threaded rod inside the threaded groove raceway. and the rear end shaft of the threaded rod,
A telescopic ladder toy characterized by having a base ladder pivoted on a rear bearing part and a handle attached to the rear end of the shaft part.