JPS63101Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a safety device for automatically opening western umbrellas.

As is well known, in automatic opening umbrellas that are linked with the push of a push button to release the retracted state of the ball holder that stores the tip of the main rib in a converged state, the push of the first stage of the push button causes the repellent to open. The engagement between the first pawl and the ball holder is released, and the engagement between the lower potter's wheel and the second pawl of the repellent is released by the second stage of pushing, and the umbrella is fully opened. The first pawl, which has sunk into the middle rod by this first stage pushing movement, is prevented from protruding from the middle rod by the inner periphery of the sliding contact hole of the ball receiver's middle rod which has descended. Therefore, in this state, the amount of protrusion of the second claw is also reduced, and if an unexpected external force is applied to the push button, the push button will immediately open, which is extremely dangerous. In addition, even after the umbrella is opened, as long as the ball holder is in the lowered position, the second pawl is prevented from protruding, so there is a gap between the protrusion at the lower end of the repellent and the push button. There were problems such as the push button rattling inside the case. Furthermore, the lowering of the ball holder due to the first-stage pushing is automatically carried out by a spring fitted to the center rod to constantly urge the ball holder downward, but conventionally, the ball holder and the center rod are Since the spring is relatively rotatable, the spring and the spring holder of the ball holder are likely to come into sliding contact, causing wear, and there is a risk of damaging the spring.

Therefore, the present invention was devised in view of the above-mentioned problems, and even when the ball holder is in the main rib retracted release position, it does not obstruct the protrusion of the repellent and allows it to fully protrude, thereby preventing accidental opening. An object of the present invention is to provide a safety device for an automatically opening Western umbrella which prevents damage to the spring and prevents damage to the spring. Therefore, its characteristic feature is that it has a ball holder and a lower potter's wheel that are slidably fitted onto the center rod, and a protrusion at the lower end of the repellent that has a first claw and a second claw that can freely come out and retract from the center rod. In an umbrella that opens automatically by releasing the engagement between the ball holder and the first pawl by the first stage of pushing, and by releasing the engagement between the lower potter's wheel and the second pawl by the second stage of pushing, the ball holder has the tip of the main rib. It has an upper-opening storage portion and a middle rod sliding contact hole on the same axis, and a tapered recess that expands upward is provided at the upper end of the sliding contact hole. The inner ends of the ribs are formed into an arc shape and are in sliding contact with the center rod, and the upper end surface of the ribs is fitted onto the center rod to urge the ball holder downward. The first pawl engages with the lower edge of the sliding hole when the ball holder is in the upper master rib storage position, and projects into the recess when the ball holder is in the lower storage release position. The lower surface of the protruding first pawl is formed into an inclined surface for tapered engagement with the tapered surface of the recess.

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

What is shown in FIGS. 1 to 4 is the first example of the present invention.
This is an embodiment, and in the figure, 1 is a center rod, and a handle 2 is fitted into one end of the center rod 1. (Hereinafter, the proximal end 2 side of the center rod 1 will be referred to as the lower side, and the tip of the center rod 1 will be referred to as the upper side.) A slotted groove 3 along the axial direction is provided on one side of the center rod 1, and a groove 3 is provided along the axis direction. A repellent locking hole 4 is provided above the slotted groove 3.

Reference numeral 5 denotes a repellent, which is built into the middle rod 1 and has a protrusion 6 at the upper end of the repellent 5, which is connected to the repellent locking hole 4.
It is locked to. In order downward from this projection 6, it has a curved portion 7, a second claw 8, a first claw 9, and a protrusion 10 at the lower end. The curved portion 7 is curved so that the curved top comes into contact with the inner surface of the inner rod 1 on the opposite side from the repellent locking hole 4, and the elastic force of the curved portion 7 causes the second pawl 8 and the first pawl 9 The protrusion 10 protrudes from the slotted groove 3, and by pushing the protrusion 10 inward of the center rod 1 against this elastic force, the second claw 8 and the first claw 9 are slotted. It is configured to fit into the groove 3. Further, the second claw 8 has a protrusion amount sufficient to prevent the first claw 9 from sinking into the slotted groove 3.

Reference numeral 11 denotes a lower potter's wheel, which is fitted onto the middle rod 1 so as to be slidable in the vertical direction, and opens and closes the main rib 12 by this sliding motion. A spring 13 is interposed,
The elastic force of the spring 13 urges the lower potter's wheel 11 upward through the mechanical connection between the lower potter's wheel 11, the middle potter's wheel, and the master rib 12. An engagement hole 14 is provided at the bottom of the lower potter's wheel 11, and the lower potter's wheel 1 is used to close the umbrella.
1 is moved downward, the engagement hole 14 and the second pawl 8 engage with each other in a detachable manner, restricting the upward movement of the lower potter's wheel 11 and maintaining the closed state.

Reference numeral 15 denotes a ball holder, which is fitted onto the middle rod 1 near the first claw 9 so as to be slidable in the vertical direction, and has an upper opening storage portion 16 that stores the tip of the main rib 12 in a converged state, and a middle rod sliding contact hole 17. on the same axis. Reference numeral 18 denotes a spring receiver, which is tightly fitted onto the middle rod 1 between the first claw 9 and the second claw 8, and the spring receiver 18 and the bottom surface 19 of the storage section 16 are connected to each other.
A compression spring 20 is interposed between them to constantly urge the ball holder 15 downward.

A tapered recess 21 that widens upward is provided on the inner periphery of the upper end of the sliding hole 17, and the upper surface of the recess 21, that is, the tapered surface, is inclined downward toward the center axis of the center rod. An inclined surface 22 is formed. A plurality of ribs 23 are radially protruded from this recess 21, and the inner ends of the ribs 23 are in sliding contact with the center rod 1. As shown in FIG. 4, the tip of the rib 23 has a circular arc portion 24, and the circular arc portion 24 is in contact with the center rod 1. The upper end surface of the rib 23 serves as a spring receiving portion that supports the lower end of the spring 20.

As shown in FIG.
The upper surface is engaged with the lower edge 25 of the sliding contact hole 17,
This stored state is maintained, and the first claw 9 is configured to protrude into the recess 21 at a lower release position where the stored state is released, as shown in FIG. Therefore, nothing protruding from the slotted groove 3 is formed in the repellent 5 between the first claw 9 and the protrusion 10.
The lower surface of the first claw 9 is formed with an inclined surface 26 along the inclined surface 22 of the recess 21 .

27 is a push button case, and the protruding part 1 at the lower end of the cissing 5
It is fitted onto the inner rod 1 so as to surround the outer area 0, and is fitted onto the handle 2. A push button 28 is built into the push button case 27, and the push button 28 and the protrusion 10 of the repellent 5 are in contact with each other.

To explain the operation of the first embodiment of the present invention, FIG. 1 shows a completely closed state, and the lower wheel 11
The engagement hole 14 of the ball holder 15 engages with the second pawl 8, the lower end edge 25 of the sliding contact hole 17 of the ball holder 15 engages with the first pawl 9, and the tip of the master rib 12 is placed in the housing portion 16 of the ball holder 15. is stored.

What is shown in FIG. 2 is the state of the first stage push operation, in which the protrusion 10 is moved by pushing the push button 28.
is pushed, and the first pawl 9 sinks into the slotted groove 3. Therefore, the disengaged ball holder 15 begins to move downward by the elastic force of the spring 20. At the beginning of this movement of the ball holder 15, the first pawl 9 comes into contact with the inner surface of the sliding hole 17 and cannot protrude from the slotted groove 3.

What is shown in FIG. 3 shows a state in which the first stage of pushing has been completed, and in a position where the housing part 16 of the ball holder 15 releases the housing state of the master rib 12, the first claw 9 is moved into the recessed part 2.
1 and has returned to its normal state.

Next, although not shown in the drawings, when the push button is strongly pressed in the second stage, the engagement between the second pawl and the lower potter's wheel is released and the umbrella is completely opened.

In the above-mentioned opening operation, when the first stage pushing operation is completed (Fig. 3), the repellent 5 is inserted into the slotted groove 3.
Since the push button 28 maintains its normal protruding state without being pushed in, even if an unexpected external force is applied to the push button 28, the umbrella will not open immediately. Conventionally, the umbrella was not provided with a recess, so the umbrella was in the state shown in Figure 2, and the umbrella would open unexpectedly with the slightest external force. Moreover, even in the open state, the protrusion 10
presses the push button 28 outward, so the push button 28
does not rattle within the push button case 27, but conventionally the push button was in the state shown in FIG. 2, so it rattled. Furthermore, since the rib 23 is provided protruding from the recess 21, the sliding contact length of the sliding contact hole 17 becomes longer, and the ball holder 15
can be stably fitted onto the inner rod 1, and since the arc portion 24 is provided at the tip of the rib 23, the rib 23 and the first claw 9 come into contact and prevent the protrusion of the first claw 9. The ball holder 1 is also connected by the arc portion 24.
5 rotates a little, and this obstruction is resolved.

Next, when closing the umbrella from the open state, when moving the ball holder 15 upward to accommodate the tip of the rib 12, the inclined portions 22, 2 are formed between the recess 21 and the first claw 9.
6 is provided, by moving the ball holder 15 upward, the first pawl 9 is recessed into the slotted groove 3, and the ball holder 15 is smoothly moved upward. Further, in the state shown in FIG. 3, the first pawl 9 and the rib 23 are engaged and the ball holder 15 is prevented from rotating relative to the center rod 1, so that the spring 20 and the ball holder 1
5 or the spring receiver 18 is prevented, and damage to the spring 20 is prevented.

In order to stably fit the ball holder 15 into the inner rod 1, as shown in FIG.
Although it is conceivable to provide a ring-shaped recess 21 on the inner surface of the ball holder 7, machining is required to form the ball holder 15 into such a shape, which increases the cost and is not practical.

As detailed above, according to the present invention, since the rib is provided in the concave portion of the ball holder, the stability of the ball holder with respect to the center rod is improved, and the manufacturing thereof is easier than that of a ring-shaped concave portion. Further, since the rib prevents the ball holder from rotating, wear of the sliding contact hole is prevented.

In addition, since rotation of the ball holder is prevented, the spring will not be damaged, and since the first pawl and the recess engage in a tapered manner, upward movement of the ball holder is smooth, and the tip of the rib is circular. Since the first claw is formed in a shape, the first claw is not blocked by the rib when protruding into the recess.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the first embodiment of the present invention, Fig. 2 is a sectional view showing an intermediate state of the first stage pushing operation, and Fig. 3 is a sectional view showing the completed state of the first stage pushing operation. 4 is a sectional view taken along the line of FIG. 1, and FIG. 5 is a sectional view showing a comparative example. 1... Middle rod, 5... Hajiki, 8... Second claw, 9
...First pawl, 10...Protrusion, 11...Lower potter's wheel, 12...Main rib, 15...Ball holder, 16...Storage section, 17...Sliding contact hole, 21...Recess, 22... Inclined surface, 25... lower edge, 26... inclined surface.

Claims (1)

[Scope of Claim for Utility Model Registration] The first part of the lower end protrusion of a repellent that has a ball holder and a lower potter's wheel that are slidably fitted on the center rod, and has a first claw and a second claw that can come out and go out from the center rod. In Western umbrellas that open automatically by releasing the engagement between the ball holder and the first pawl when the first step is pushed, and between the lower potter's wheel and the second pawl when the second step is pushed, the ball holder stores the tip of the main rib. It has an upper-opening storage section and a middle rod sliding contact hole on the same axis, and a tapered recess that widens upward is provided at the upper end of the sliding contact hole, and the recess has a plurality of holes. The ribs protrude radially, and the inner ends of the ribs are formed into an arc shape and are in sliding contact with the center rod, and the upper end surface of the ribs is fitted with a spring fitted on the center rod to urge the ball holder downward. The first pawl is a lower end spring receiving part, and the first pawl engages with the lower edge of the sliding hole when the ball holder is in the upper main rib storage position, and projects into the recess when the ball holder is in the lower storage release position. The lower surface of the first claw should taperly engage with the tapered surface of the recess.
A safety device for an automatically opening western umbrella characterized by being formed on an inclined surface.