JPS6236419Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement in the extension and contraction mechanism of the shaft of a jump umbrella.

BACKGROUND OF THE INVENTION A conventional telescoping mechanism for the shaft of a jump umbrella was described in Japanese Utility Model Publication No. 50-22860 as shown in FIGS. 7 and 8.

That is, 1 is a relatively short inner shaft tube. 3
is an outer stem tube that is slidably fitted to the outside of the lower end of the inner stem tube, and a grip portion 4 is provided at the lower end. Reference numeral 5 denotes a coil spring, which is inserted into the outer shaft tube 3. Its lower end abuts against a stopper 6 provided in the middle of the outer shaft tube 3, and its upper end abuts against the lower end opening of the inner shaft tube 1. Therefore, the inner shaft tube 1 is always biased in a direction to extend upward.

As shown in FIG. 7, when the inner stem tube 1 is at its longest extended position after opening, the protrusion 7a of the upper flap 7 housed inside the inner stem tube 1 engages with the small hole 8 of the outer stem tube 3. At the same time, the inner stem tube 1 is fixed.

Next, in order to close the umbrella, when the lower wheel 13 is pulled down by hand, the lower end of the reduced diameter part 13a of the lower wheel 13 pushes the protrusion 7a of the upper repellent 7 into the inner handle tube 1. Then, the engagement between the inner handle tube 1 and the small hole 8 of the outer handle tube 3 is disengaged, and when the lower wheel 13 is further pulled down, the inner handle tube 1 moves downward inside the outer handle tube 3 against the elasticity of the coil spring 5. The projection 7a of the upper repellent 7 remains housed inside the outer shaft tube 3 as shown in FIG.

When the lower potter's wheel 13 is lowered to the lowest end, the lower pellicle 11 is inserted into the opening 13b formed in the reduced diameter part 13a.
The locking claws 12 of the umbrella are engaged, and the umbrella is closed with the handle at its shortest.

Problems with the prior art However, according to this prior art, when an attempt is made to close the umbrella, the protrusion 7a of the upper repellent 7 is always pushed into the inner handle tube 1 by the lower potter's wheel 13 and the outer handle tube 3, and the outer handle tube 3 is disengaged from the small hole 8, the shaft becomes short, and the shaft remains closed and cannot be extended.

In general, jump umbrellas have a shorter shaft than manual umbrellas because their structure requires a button for the lower retraction near the handle, but umbrellas with telescoping handles (shafts) can be closed even further. In the umbrella state, the shaft was short, and not only did it look unsightly, but it also had the problem that when the umbrella was closed, when the umbrella was propped up against something, if the shaft was short, it would fall over.

Means for Solving the Problems The present invention was devised in view of the problems of the prior art, and includes a lower shaft that is telescopically fitted inside the upper shaft via a coil spring and has a handle at its lower end. In the jump umbrella having the above structure, when the shaft is in the most extended state, the projection provided in the lower shaft is biased in the direction of protrusion from the small holes of the upper and lower shafts, and the lower end is fixed within the lower shaft when the shaft is in the extended state. and an upper repellent whose upper locking claw can lock into the engagement hole of the upper and lower shafts;
It consists of a lower repellent whose upper end is fixed below the upper repellent and from which a locking claw and an operation button protrude from the vicinity of the handle of the lower shaft. Approximately parallel taper parts are formed at the corners of the operation button bases of the upper and lower repellents, and hook-shaped parts at both ends of a dogleg-shaped spring are engaged with these two taper parts. ing.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a state in which the umbrella is opened and the shaft is fully extended.

21 is an upper shaft, and a lower wheel 22 is slidably fitted on the outer periphery of the upper shaft. A lower shaft 23 is slidably fitted inside the lower end of the upper shaft 21. A handle 24 is provided at the lower end of the lower shaft 23.

A coil spring 2 is installed at the upper end of the lower shaft.
5 is fixed, and the upper end of this coil spring 25 is fixed to a stopper 26 provided at the middle part of the upper shaft 21.

Reference numeral 27 denotes a spring having a U-shaped cross section, and is disposed near the upper end of the lower shaft 23, and a protrusion 28 is formed on the upper side of the U-shaped spring 27. Small holes 21a and 2 are formed at corresponding positions in the overlapping portion of the upper shaft 21 and the lower shaft 23, respectively.
3a is formed. The protrusion 28 is a spring 27
These protrude outward from the small holes 21a and 23a to lock the upper and lower shafts.

Reference numeral 30 denotes an upper repellent, the lower end portion 30a of which is installed inside the lower shaft 23, and the upper locking claw 3.
1 engages with engagement holes 21b and 23b formed at positions where the upper and lower shafts 21 and 23 overlap when the shaft is in its most extended state.

33 is a lower repellent, and an upper end portion 33a is attached below the upper repellent 30, and a locking claw 3
4 and an operation button 35 protrude from the opening 36 of the lower shaft 23.

These upper and lower repellents 30 and 33 are arranged on the same plane.

On the upper side of the locking claw 31 of the upper repellent 30 and the corner of the base of the operation button 35 of the lower repellent 33,
Tapered portions 31a and 35a are formed respectively.

37 is a spring formed in a dogleg shape, the upper and lower ends of which are formed into hook shapes 37a, 37b, and are engaged with the tapered portions 31a, 35a of the upper and lower repellents 30, 33. This doglegged spring 37 is bent above the central portion, and this bent portion 37c is in contact with the inner wall of the lower shaft.

Note that the lower part of the lower potter's wheel 22 is reduced in diameter, and an opening hole 22b is formed in this reduced diameter part 22a.
The opening hole 22b, the engaging holes 21b, 23b, and the opening 36 are formed on the same axis of the shaft.

Effect Next, the operation of this embodiment will be explained.

First, Figure 1 shows the umbrella as it opens, with the shaft at its most extended. A small hole 21a in which a projection 28 is formed in the upper and lower shafts 21, 23,
23a, the shaft is held in its longest state.

In this state, the locking claw 3 of the upper repellent 30
1 is the engagement hole 21b, 2 of the upper and lower shafts 21, 23.
3b. Further, the locking pawl 34 of the lower pellicle 33 and the operation button 35 also protrude from the opening 36.

Next, when the lower potter's wheel 22 is lowered in FIG. Shaft 21
slides downward on the outer periphery of the lower shaft 23.

At this time, the tapered part 31a is pressed by the reduced diameter part 22a of the lower potter's wheel 22 and the lower end part of the upper shaft 21, and the locking claw 31 of the upper repellent 30 is pressed against the lower shaft 2.
It is inserted within 3.

As a result, the upper shaft 21 has a coil spring 2
The shaft slides downward against the elastic force of 5, and the shaft becomes shorter.

As shown in FIG. 2, when the lower wheel 22 is pulled down to the lower end of the lower shaft 23, the upper shaft 21
The engagement hole 21b and the opening hole 22 of the lower potter's wheel 22
The locking pawl 34 of the lower repellent 33 engages with b, and the shaft is held in a short state.

Next, when the operation button 35 is pressed, the locking claw 34 of the lower pellicle 33, the lower potter's wheel 22 and the upper shaft 21
The lower potter's wheel 22 rises.

Then, the upper shaft 21 is raised by the restoring force of the coil spring 25, and in the most extended state of the shaft shown in FIG.
The locking claw 31 of 0 engages with the engagement holes 21b and 23b of the upper and lower shafts 21 and 23.

Furthermore, in order to extend the shaft when the umbrella is closed, fold the umbrella and tighten the strap 40 as shown in Figure 4.
If you press the handle to prevent the umbrella from opening, or hold the umbrella rib by hand to prevent it from opening, and pull the handle 24 while pressing the operation button 35, the shaft will extend.

In other words, the umbrella in the state shown in Figures 2 and 5,
Press and hold the operation button 35 to prevent the umbrella from opening.
When you press , the locking claw 34 of the lower repellent moves to the lower repellent 2.
3 and is disengaged from the upper shaft 21 and lower wheel 22, and the tapered portion 35a of the operation button 35 is inserted into the lower shaft 23. Then, as shown in FIG. 6, the hook-shaped portion 37b of the doglegged spring 37 is slid downward along the tapered portion 35a, and the hook-shaped portion 37a touches the tapered portion 31a of the locking pawl 31 of the upper repellent 30. Push down, locking claw 3
1 is inserted into the lower shaft. When the lower shaft 23 is pulled down in this state, the lower shaft 23 slides within the upper shaft 21 and extends. When the operating button 35 is released when the shaft is fully extended as shown in FIG. 4, the doglegged spring 37 moves upward, and the upper repellent 30
The locking pawl 31 engages with the engagement hole 21b and opening hole 22b of the upper shaft 21 and the lower potter's wheel 22, thereby closing the umbrella and fixing the shaft in an extended state.

When opening the umbrella again, the umbrella can be opened automatically by removing the handle string 40 or releasing the hand that was holding the umbrella rib so as not to open it, and pressing the operation button 35.

Effects According to the present invention, the shaft can be extended while the umbrella is closed, which not only improves the appearance but also prevents the umbrella from falling over when propped up against something.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the jump umbrella according to the present invention when the umbrella is opened and the shaft is at its maximum length, Figure 2 is a sectional view when the jump umbrella is closed and the shaft is at its shortest length, and Figure 3 is when the jump umbrella is opened or closed. A cross-sectional view of the shaft when the umbrella is opened and the shaft is at its maximum extension. Figure 4 is a front view showing the shaft at its shortest and maximum extension when the umbrella is closed. Figures 5 and 6 are operating buttons. FIGS. 7 and 8 are partial sectional views illustrating the movement of the up and down repellent when doing so, and FIGS. 7 and 8 are sectional views showing the prior art. 21... Upper shaft, 22... Lower potter's wheel, 23
... lower shaft, 24 ... handle, 25 ... coil spring, 27 ... U-shaped spring, 28 ... protrusion,
30...Upper repellent, 31...Upper repellent locking claw,
33...lower repellent, 34...lower repellent locking claw,
35...operation button, 37...dog-shaped spring.

Claims (1)

[Scope of utility model registration request] In a jump umbrella that has a lower shaft that is telescopically fitted inside the upper shaft via a coil spring and has a handle at the lower end, the shaft is biased in the direction of protrusion from the small hole in the upper and lower shafts when the shaft is fully extended. a protrusion provided in the lower shaft, and an upper repellent whose lower end is fixed within the lower shaft when the shaft is in an extended state, and whose upper locking claw can lock into the engagement hole of the upper and lower shafts; It consists of a lower reel whose upper end is fixed below the upper reel and a locking claw and an operation button protrude from an opening near the handle of the lower shaft. Approximately parallel taper parts are formed on the upper surface of the locking claw of the repellent and at the corner of the base of the operation button of the lower repellent, and hook-shaped parts at both ends of the dogleg-shaped spring straddle these two taper parts. An expansion and contraction mechanism for the shaft of a jump umbrella, characterized in that the shaft is engaged.