JPS598582Y2 - Automatic opening/closing device for western umbrellas - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an opening/closing device for an automatically opening Western umbrella.

As is well known, in automatic opening umbrellas that release the retracted state of the ball support that converges and stores the tips of the main ribs in conjunction with the push of a push button, the first push of the push button releases the retractable state. The engagement between the ball receiver and the ball receiver is released, and the ball receiver, which is biased by the spring, moves downward and releases the retracted state of the tip of the main rib.

The second stage pushing operation releases the lower potter's wheel and the potter's claw of the repellent so that the umbrella opens.

The ball holders of automatic opening Western umbrellas with this structure can slide smoothly and stably on the center rod, and in order to stably maintain the main rib retracted state, the center rod sliding contact hole is placed on the center rod. It is shaped so that it is longer than the diameter of.

The ball receiver is configured to engage with the lower edge of the center rod sliding contact hole to hold the ball receiver in the axial direction.

Therefore, the ball receiving pawl, which has sunk into the center rod by the first stage pushing, is prevented from protruding from the center rod by the inner circumferential surface of the ball receiver's middle rod sliding contact hole which has descended.

In this blocked state, the amount of protrusion of the potter's wheel claw is also reduced, and even if a slight unexpected external force is applied to the push button, it will immediately open, which is extremely dangerous.

In addition, even after the umbrella is opened, as long as the ball receiver is in the lowered position, the ball receiver is prevented from protruding, so there is a gap between the protrusion at the lower end of the repellent and the push button, causing the push button to rattle inside the holder. Inconveniences such as sticking have occurred.

Therefore, in order to solve the above problem, the length of the ball holder's middle rod sliding contact hole should be shortened so that when the ball holder is lowered, the ball holder claw protrudes from the upper edge of the sliding contact hole. However, if the length of the sliding contact hole is shortened in this way, the holding of the center rod of the ball holder becomes unstable, and the ball holder claw hits the spring, etc.
Undesirable.

Furthermore, it would be better to increase the amount of movement of the ball holder and lower it far enough so that the center rod sliding contact hole does not engage with the ball holder pawl.
If you do this, the entire opening/closing device becomes longer, and the repellent becomes longer, so the slotted groove in the center rod also becomes longer, which weakens the strength of the center rod and is not aesthetically pleasing, and the spring must be made longer. did not become.

Therefore, it was considered to provide a recess on the inner surface of the center rod sliding contact hole to house the ball catch pawl in a protruding state, but since the ball catch was fitted into the sleeve so that it could rotate freely relative to the center rod. However, when the ball holder is lowered, it is difficult to make sure that the ball holder protrudes from all four parts, and if a circumferential recess is provided on the inner surface of the ball holder's center rod sliding contact hole, the center rod Since the sliding contact hole becomes short in the axial direction, the sliding operation is unstable.

Therefore, the present invention was devised in view of the above problems, and provides an opening/closing device for an automatic umbrella in which the ball catch claw always protrudes from the center rod when the ball catch is in the lowered position. Therefore, the feature is that the ball receiving pawl and the operating protrusion, which protrude freely from the center bar, are protruded on the same side. A holder containing a built-in repellent and a push button for pushing and moving the protrusion is fitted and fixed on the outside, and a ball bearing biased toward the holder by an elastic member is placed above the holder and is slidable in the axial direction. The holder and the ball holder are engaged with each other through a concave-convex fit so that they cannot rotate relative to each other and are movable in the axial direction, and the ball holder claw is projected from the inner surface of the ball holder's inner rod sliding contact hole. A storage groove is provided along the axial direction to be stored and whose lower end is closed and removably engages with the ball receiving pawl.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

What is shown in FIGS. 1 to 8 is the first embodiment of the present invention, in which 1 is a center rod, 2 is a repellent, 3 is a push button holder, 4 is a push button, 5 is a ball holder, and 6 is a spring, 7 is a spring receiver, and 8 is a lower potter's wheel.

The middle rod 1 is a hollow nine rod, and one side thereof is provided with a slotted groove 9 of a predetermined length along the axial direction.

The above-mentioned repellent 2 is built into the middle rod 1, and its upper end is locked to the middle rod 1 (not shown).
The potter's wheel claw 11. The ball receiving pawl 12 and the operating protrusion 13 are provided to protrude on the same side at a predetermined interval in the vertical direction (axial direction).

The upper surface of the potter's wheel pawl 11 is an inclined surface, and the lower surface is a flat surface perpendicular to the axial direction of the center rod.The upper surface of the ball receiving pawl 12 is a flat surface perpendicular to the axial direction of the center rod, and the lower surface thereof is The surface is inclined, and the protrusion 13 is provided at the lower end of the repellent 2.

The potter's wheel pawl 11, the ball receiving pawl 12, and the protruding part 13 protrude from the slot groove 9 of the center bar 1, and by pushing the protruding part 13 into the middle bar 1 against the elastic force of the curved part 10, potter's wheel claw 11
The ball receiving claw 12 is constructed to be recessed into the middle rod 1.

The amount of protrusion of the potter's wheel claw 11 is larger than that of the ball receiving claw 12,
Even if the ball receiving claw 12 is sunk into the middle rod 1, the potter's wheel claw 11 still protrudes with a difference.

The push button holder 3 is a double cylinder made of a concentric inner cylinder 14 and an outer cylinder 15, and the lower edge of the outer cylinder 15 is connected to the middle part of the inner cylinder 14, and the upper edge is open. There is.

The upper edge of the inner cylinder 14 is located below the upper edge of the outer cylinder 15.

A notch 16 that reaches the upper edge is provided on one side of the inner tube 14 inside the outer tube 15, and a button window 17 is provided on one side of the outer tube 15 opposite to the notch 16. .

In the lower part of the space between the inner cylinder 14 and the outer cylinder 15 between the notch 16 and the button window 17, there is provided a push button foot storage chamber 18 that is open from above, and a partition wall 19 is provided in the center of the storage chamber 18 in the radial direction. It is divided into two parts.

The side wall surface of the inner cylinder 14 of each storage chamber 18 is formed into an inclined surface 20 so that the upper opening becomes wide.

A locking piece 21 is protruded at a predetermined position between the inner tube 15 and the outer tube 14 other than between the notch 16 and the button window 17.

This locking piece 21 has a predetermined thickness. Outer cylinder 14, 15
are arranged in succession in the radial direction, and are provided from the lower end to the upper end of the outer cylinder 15 along the axial direction.

The portion of the locking piece 21 above the upper end of the inner cylinder 14 does not extend further toward the center than the outer peripheral surface of the inner cylinder 14 .

The push button holder 3 has its inner cylinder 14 fitted over the center rod 1, and is fixed to the center rod 1 with a pin or the like at a position where the projection 13 of the repellent 2 projects from the notch 16.

Note that a handle (not shown) is fitted into the inner cylinder 14 that protrudes downward from the lower end of the outer cylinder 15.

The push button 4 includes a push button main body 22, a forked leg 23 projecting downward from the lower end of the main body 22, and an overhang projecting in the left-right direction from both ends of the upper part of the main body 22 on the back side. 24.

A recess 25 is provided at the center of the back surface between the left and right overhangs 24 at the top of the main body 22 .

This push button 4 is inserted between the inner cylinder 14 and the outer cylinder 15 from the upper opening of the holder 3 before the holder 3 is inserted into the inner rod 1, and the push button 4 is inserted so that the legs 23 of the push button 4 support the partition wall 19. The push button main body 22 is loosely fitted into the storage chamber 18 and protrudes from the button window 17 so as to be able to move forward and backward in the radial direction, and the projecting part 24 is locked to the inner surface of the periphery of the button window 17 to prevent it from coming off from the button window 17. .

In this way, the holder 3 with the push button 4 stored in the button window 17 is inserted into the middle rod 1 as described above, and the protruding part 13 of the repellent 2 is inserted into the push button 4.
It is in contact with the recess 25 on the back surface of.

By pushing the push button 4 in the radial direction, the push button 4 moves to the foot 23.
, and pushes the protrusion 13 of the repellent 2.

In order to facilitate this rocking, the storage chamber 18 is provided with an inclined surface 20.

In the protruding state of the protruding part 13 of the repellent 2, the protruding part 24 of the push button 4 is in contact with the inner surface of the periphery of the button window 17.

The ball holder 5 is also composed of an inner and outer double cylinder, and the upper edge of the inner cylinder 26 and the middle part of the outer cylinder 27 are connected to each other by a connecting wall 28 to form an upwardly open ball holder 29. The lower edge of .27 is open.

On one side of the lower end of the inner cylinder 26, there is an inner and outer cylinder 26. A retaining portion 30 is provided between the retaining portion 27 and protruding downward.
0 is provided with a fitting groove 31 that opens at the lower edge along the axial direction.

The center hole of the inner cylinder 26 is a middle rod sliding contact hole 32, and the sliding contact hole 3
2 is sufficiently long compared to the diameter of the center rod 1, and the inner surface of the hole 32 has a
A ball receiving pawl storage groove 33 is provided along the axial direction.

This groove 33 is open at the upper end and closed at the lower end by a closing part 34.

The upper surface of the closing portion 34 is shaped into an inclined surface.

The ball bearing 5 is fitted onto the center rod 1 above the holder 3 so that its center rod sliding contact hole 32 can freely slide in the axial direction.

The upper end of the outer cylinder 15 of the holder 3 is removably fitted between the outer cylinder 27 and the inner cylinder 26 from the open lower part of the ball holder 5.

The fitting groove 31 of the engaging portion 30 is fitted into the locking piece 21 so as to be movable in the axial direction.

Therefore, the holder 3 and the ball holder 5 cannot rotate relative to each other.

In such a state, the relative positional relationship between the storage groove 33 and the fitting groove 31 is determined so that the ball receiving claw 12 corresponds to the storage groove 33.

The radial depth of the storage structure 33 is deeper than the maximum amount of protrusion of the ball receiving claw 12 from the center rod 1, as shown in FIG.

At the lower position of the ball holder 5 where the connecting wall 28 of the ball holder 5 comes into contact with the upper end surface of the outer cylinder 27 of the holder 3, the ball holder pawl 12 is inserted into the storage groove 3.
The closing portion 34 is provided such that the upper surface of the closing portion 34 and the lower surface of the ball receiving pawl 12 substantially come into contact with each other.

As shown in FIG. 3, at the upper position of the ball holder 5 where the upper surface of the ball holder pawl 12 is engaged with the lower surface of the closing portion 34, the outer cylinder 27 of the ball holder 5 is
and the outer cylinder 15 of the holder 3 are overlapped with each other, and the fitting groove 3
The length of the retaining portion 30 is determined so that the engagement between the locking piece 1 and the locking piece 21 will not be released.

The spring 6 is fitted onto the middle rod 1 above the holder 3, the lower end of the spring 6 is in contact with the upper surface of the connecting wall 28 of the ball receiver 5, and the upper end of the spring 6 is tightly fitted into the middle rod 1. It is in contact with the spring receiver 7.

This spring 6 always urges the ball holder 5 toward the holder 3 side.

The aforementioned lower potter's wheel 8, which has a lock pawl 11 projecting above the spring receiver 7 and has an engagement hole 35 that removably engages with the potter's wheel pawl 11, is slidably fitted onto the inner rod 1. There is.

Reference numeral 36 denotes a main rib, the tip of which is converged and accommodated in the ball receiving portion 29 of the ball receiving portion 5 when the umbrella is in the closed state.

According to the first embodiment of the present invention, when the umbrella is moved from the closed state shown in FIG. 3 to the open state shown in FIG. Since it is long enough,
It is stably fitted onto the inner rod 1 and slides smoothly.

Moreover, even though the sliding hole 32 is long, since the storage groove 33 is provided to accommodate the ball receiving claw 12, the engagement between the ball receiving claw 5 and the ball receiving claw 12 is released. Also, the ball receiving pawl 12 protrudes sufficiently and does not cause the conventional problems such as accidental opening of the umbrella and rattling of the push button 4.

Furthermore, the movement of the ball receiver 5 is reduced.

When the ball receiving pawl 12 protrudes into the storage groove 33, the ball receiving pawl 12 and the holder 3 are engaged with each other by the locking piece 21 and the fitting groove 31 and are not able to rotate relative to each other. and storage groove 3
The relative position with 3 will not shift.

Further, since the upper surface of the closing portion 34 and the lower surface of the ball catch pawl 12 are shaped like inclined surfaces, the state shown in FIGS. 2 to 3, that is, the ball catch 5 can be smoothly moved upward.

What is shown in FIG. 9 is a second embodiment of the present invention, and is a sectional view of the ball holder 5 corresponding to the portion shown in FIG. 4.

In this second embodiment, a large number of ball receiving and storing grooves 33 are provided on the inner surface of the center rod sliding contact hole 32 at predetermined intervals in the circumferential direction.

By providing a large number of grooves 33 in this way, positioning is facilitated and frictional resistance with the center rod 1 is eliminated.
This makes the sliding movement easy.

Other structures, functions, and effects are substantially the same as those of the first embodiment.

What is shown in FIG. 10 is a third embodiment of the present invention. The ball bearing 5 and the holder 3 are engaged with each other so that they cannot rotate relative to each other and are movable in the axial direction, with a polygon whose circumference is slidably fitted into the polygon, and other structures, Also, are the effects different from each of the above embodiments? Rohanai.

Note that the present invention is not limited to each of the above embodiments.

The present invention engages the holder and the ball holder through a concave-convex fitting so that they cannot rotate relative to each other and can move freely in the axial direction, and the ball holder claw of the cylindrical ball protrudes from the inner surface of the sliding contact hole of the ball holder's center rod. Since we have provided a storage groove that allows the umbrella to be stored in the open position, even if the ball holder's center rod sliding contact hole is lengthened, the hole will not press the ball holder's pawl, which prevents accidental opening and prevents the push button from opening. This prevents rattling, and as mentioned above, the storage groove is shaped like a line along the axial direction of the ball bearing center rod sliding contact hole, so the sliding contact surface for the center rod of the hole is The axial length is not shortened by the storage groove, and the ball holder can be stably held on the center rod, resulting in many practical effects.

[BRIEF DESCRIPTION OF THE DRAWINGS] The figures show an embodiment of the present invention, FIG. 1 is an exploded perspective view of the first embodiment, FIG. 2 is a sectional view showing the same in the open state, and FIG. 3 is the same. 4 to 8 are cross-sectional views of the ball holder and holder corresponding to IV, V, VI, VII, and IIX in FIG. 3, and FIG. 9 is a sectional view showing the second embodiment. 4 is a sectional view corresponding to FIG. 4, and FIG. 10 is a sectional view of a holder and a ball holder showing a third embodiment. 1...Middle stick, 2...Hajiki, 3...
...Push button holder, 4...Push button, 5...
・Ball holder, 6...Elastic member (spring), 12
... Ball receiving claw, 13 ... Operation protrusion, 3
2... Middle rod sliding contact hole, 33... Storage groove.

Claims (1)

[Scope of utility model registration request] The center rod 1 has a ball catch claw 1 that protrudes from the center rod 1 so as to be freely retractable.
A holder 3 housing a push button 4 for pushing the projection 13 is fitted and fixed on the outside, and an elastic member 6 is mounted above the holder 3.
The ball bearing 5, which is biased towards the holder 3 side, is fitted onto the sleeve so as to be slidable in the axial direction, and the holder 3 and the ball bearing 5 are engaged with each other through a concave-convex fitting so that they cannot rotate relative to each other, and the ball bearing 5 is engaged with the center rod 1 so as to be movable in the axial direction, and the ball catch claw 12 is housed in a protruding state inside the inner rod sliding contact hole 32 of the ball receiver 5, and the lower end is closed. A storage groove 33 is provided which engages freely with the center rod sliding contact hole 32, and the storage groove 33 is shaped into a linear shape along the axial direction at a position corresponding to the ball receiving pawl 12 of the center rod sliding contact hole 32. An opening/closing device for an automatically opening western umbrella, characterized in that: