JPS6130499Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an automatic umbrella-type telescopic umbrella configured to automatically open the umbrella by a spring force. The present invention relates to a lower potter's wheel that has an annular engagement step on its inner circumferential surface with which a locking piece engages.

The above-mentioned automatic opening type telescopic umbrella equipped with a lower potter's wheel is already well known, and this type of automatic opening type telescopic umbrella equipped with a hand-operated locking piece has a locking piece that is remotely controlled from the hand. Since the amount of displacement cannot be large, in order to ensure the locking of the lower wheel by the locking piece, an engaging stepped portion on the inner circumferential surface of the lower wheel is placed as close to the umbrella handle side as possible. It has an inner diameter that allows it to come into sliding contact with the umbrella handle. For this reason, the following problems have conventionally been observed.

In other words, in order to prevent the extended umbrella handle from shortening, folding umbrellas are provided with temporary fixing devices (balls or plate pieces with temporary fixing protrusions; hereinafter referred to as "balls") for the extendable part of the umbrella handle. However, the ball that temporarily fixes the upper handle and the next tier of the umbrella handle (lower handle for two-tiered stretchable umbrellas, middle handle for three-tiered stretchable umbrellas) so that it cannot be shortened partially protrudes outside the umbrella handle. As a result, in the automatic opening type telescopic umbrella, the engaging stepped portion on the inner circumferential surface of the lower potter's wheel, which is provided so as to be in sliding contact with the umbrella handle, was easily caught by the ball. Therefore, when you try to release the locking piece by manual operation to release the lower potter's wheel and automatically move the lower potter's wheel upward by the spring force to obtain automatic umbrella opening,
When the engagement stepped part of the lower potter's wheel tries to pass the above ball position, the lower potter's wheel gets caught and the automatic opening cannot be achieved, or in extreme cases, the stuck lower potter's wheel may have to be pushed up by hand. Auto-opening Western umbrellas, which require opening, have even led to fatal situations. Conversely, when you hold the lower potter's wheel in your hand from an open state and try to pull it down to close the umbrella, the lower potter's wheel gets caught in the same way, and the ball sinks into the umbrella handle due to the pulling force of the lower potter's wheel. There have also been cases where the temporary fixings were removed and the umbrella handle was unexpectedly shortened.

Therefore, this invention aims to provide a new lower potter's wheel for an automatically opening telescopic umbrella as described at the beginning, which eliminates the above-mentioned problems.

This invention will be described in detail below with reference to the illustrated embodiments.

The first embodiment shown in FIGS. 1-5 relates to an example in which this invention is implemented in an automatic opening type three-stage telescopic umbrella as shown in FIG. The umbrella handle of the Doyo Umbrella consists of an upper handle 1, a middle handle 2 that can be inserted into the upper handle 1, and a lower handle 3 that can be inserted into the middle handle 2. It is composed of an umbrella pattern.
An upper potter's wheel 4 is fixed to the upper end of the upper handle 1, and an upper lower potter's wheel 5 and a lower lower potter's wheel 6 are slidably attached to the umbrella handle. The western umbrella shown in Fig. 1 is constructed as a so-called toe press type umbrella,
The umbrella structure has one end pivoted on the upper potter's wheel 4, the other end of the base bone 7 is pivoted midway through the support bone 8, and one end is pivoted on the upper lower potter's wheel 5, as is customary for totopress type ones. The other end of the support bone 8, which is pivoted to It is composed of things. A tip bone 11 is pivotally supported at the tip of the main rib 9, and a well-known advancement and retraction rod 12 connects its proximal end to the support bone 8 for automatically deploying and rotating the tip bone 11 when the umbrella is opened. It is provided. Further, a spring 13 is stretched between the lower potter's wheel 6 and the support bone 8 at a proper location. A coil spring 14 for automatic umbrella opening is provided on the umbrella handle between both lower wheels 5 and 6.

As described above, the western umbrella shown in FIG.
is automatically moved upward on the umbrella handle by the force of the coil spring 14, and since it has a top-press type umbrella structure, the base bone 7, strut 8, master rib 9, and support bone 10 are automatically moved upward on the umbrella handle. Furthermore, the tip rib 11 is automatically expanded and rotated by the pulling action of the advancing/retracting rod 12, and the open state shown in the right half of Fig. 1 is finally obtained. . In addition, when holding the lower lower potter's wheel 6 and pulling it down on the umbrella handle from the same open state, the base bone 7, strut 8, master rib 9, and supporting bone 10 can be seen, since the umbrella has a top press type umbrella structure.
Automatic folding and rotation of the first bone is obtained, and then
By folding the umbrella 1, the extended and folded state of the umbrella handle shown in the left half of FIG. 1 can be obtained. Of course, when carrying it normally, the umbrella handle is further shortened.

As shown in Figures 1 and 2, the position of the lower potter's wheel 6 on the umbrella handle in the closed state is set above the lower end of the upper handle 1, and in such a position, the lower potter's wheel 6 is placed on the umbrella handle. A locking piece 15 is provided in the upper end of the inner handle 2 to lock the handle so that it cannot move upwardly and to maintain the closed state of the umbrella. As shown in FIG. 2, this locking piece 15 is supported 16 by the inner handle 2 at the upper end, and a locking protrusion 15a at the lower end is pushed out of the umbrella handle by a spring 17 provided inside the inner handle 2. It is energized to move in the direction of protrusion. Window holes are formed in the middle handle 2 and the upper handle 1, which overlap when the umbrella handle is extended, and the locking piece 15 is connected to a spring 17 as shown in FIG.
By force, the locking protrusion 15a projects through these window holes to the outside of the upper handle 1, and engages with the annular engagement step 6a on the inner peripheral surface of the lower end of the lower lower wheel 6 in the umbrella closing position, The lower lower potter's wheel 6 is locked so that it cannot move upward.

In order to release the locking piece 15 described above by manual operation, an operating portion 19 is provided on the lower handle 3 at an appropriate amount above the handle 18 fixed to the lower end of the lower handle 3. There is. The operation part 19 made of a plate has a V-shaped notch 1 provided at its inner end.
Regulation piece 35 with the corner of 9a fixedly installed inside the lower handle 3
One half of the lower handle 3 is provided so as to protrude outward from the window hole of the lower handle 3. Then, the locking piece 15 that locks the lower lower potter's wheel 6 to the umbrella handle in the upper position when the umbrella handle is extended and closed is moved to the handle 18.
An interlocking tool 20 is provided within the umbrella handle in order to release the lock by pushing the operating portion 19 nearby. This interlocking tool 20 is configured to be able to be shortened together with the umbrella handle in order to enable the umbrella handle to be shortened from the extended umbrella-closed state shown in FIG. That is, in the illustrated case, the interlocking tool 20 has a rod 21 that is engaged with the locking piece 15 at an upper end engaging portion 21a located on the upper side, and a rod 21 that is located on the lower side and connected to the operating portion 19 at the lower end. The rod 21 and the plate 22 are configured to be extendable and retractable, and the linkage 20 extends from the fully extended state shown in FIG.
A regulating mechanism 2 that prevents separation between the plate 22 and the plate 22
3 is provided. The interlocking tool 20 is pulled within the umbrella handle by a pushing operation of the operating part 19, causing the locking piece 15 to retract and release the locking of the lower potter's wheel 6. The interlocking mechanism between the operating portion 19 and the locking piece 15 may be of any known structure.

As shown in Figures 2 and 3, at the upper end of the inner handle 2,
A temporary fixing mechanism including a ball 24 and a leaf spring 25 is provided. This temporary fixing mechanism is to prevent the umbrella handle from shortening between the upper handle 1 and the middle handle 2 when the umbrella handle is in the extended state.As clearly shown in FIG. The ball 24 is fixed to the inner handle 2 by its legs, and the ball 24 is disposed in a window hole formed in the upper end of the inner handle 2 and is biased by a plate spring 25 to move in the projecting direction. The upper handle 1 is formed with a window hole that faces the ball 24 when the upper handle 1 and the middle handle 2 are extended, and the ball 24 is inserted through the window of the middle handle 2 as shown in FIG. With the hole and the upper handle 1 straddling the window hole, with a part protruding outside the umbrella handle,
The ball 24 temporarily fixes the upper handle 1 and the middle handle 2 so that they cannot be shortened. When a force is applied to shorten the upper handle 1 and the middle handle 2, the leaf spring 25 is bent as shown by the chain line, the ball 24 is disengaged from the upper handle 1, and the upper handle 1 and the middle handle are The distance between the two handles can be shortened. Note that a temporary fixing mechanism (not shown) is similarly provided between the middle handle 2 and the lower handle 3.

In the automatic opening type three-stage telescopic umbrella as described above, the lower lower potter's wheel 6 is constructed in accordance with this invention.

That is, in the first embodiment, the lower lower potter's wheel 6 has a separate cylinder body 2, as shown in exploded view in FIG.
6, and the cylindrical body 26 has a flange 26a at its upper end. Lower lower potter's wheel 26
An annular stepped portion 6b is formed on the inner circumferential surface of the lower end of the main body, and the cylindrical body 26 is inserted into the main body of the lower lower potter's wheel 6 from above, and the flange 26a is shaped into an annular shape as shown in FIG. The cylindrical body 26 is installed so as to be in sliding contact with the upper handle 1 with the cylindrical body 26 protruding downward from the lower lower potter's wheel 6 body by a slight length toward the stepped portion 6a. The engagement step portion 6a is provided by the upper surface of the cylindrical body flange portion 6a. The coil spring 14 for automatic umbrella opening described above is arranged on the umbrella handle by inserting the lower end into the lower lower wheel 6 and receiving the lower end on the flange 26a of the cylindrical body 26, as shown in FIG. It is set up.

As clearly shown in FIG. 4, the above-mentioned cylinder body 26 is provided with a notch-shaped groove 27 along the axial direction of the lower wheel 6 in a part of the circumferential direction. Further, a regulating protrusion 28 that protrudes upward is integrally formed on the annular stepped portion 6b of the lower lower potter's wheel 6, and the regulating protrusion 28 faces into the groove 27 in the collar portion 26a as shown in FIG. Thus, the cylinder body 26 is prevented from rotating. Therefore, the relative positions of the grooves 27 in the circumferential direction with respect to the main body of the lower lower potter's wheel 6 and the umbrella handle are not changed, but as shown in FIGS. 3 and 5, the grooves 27 are 24 is provided on the cylindrical body 26, and therefore on the lower lower potter's wheel 6, in the phase in which it protrudes outside the umbrella handle.

The automatic opening three-stage telescopic umbrella shown in Figs. 1 and 2 is equipped with the lower lower wheel 6 as described above, so that the operating part 1 can be opened and closed with the fingers of the hand holding the handle 18 from the handle extended and closed state shown in the left half of Fig. 1.
9 is pushed in to lock the locking piece 15 to the locking projection 1
5a is displaced so as to disengage from the engaging step 6a of the lower saddle 6, releasing the engagement of the lower saddle 6, and the force of the spring 14 automatically moves the lower saddle 6 upward to the open position shown in the right half of FIG.
When the umbrella is opened, the engagement step 6a of the lower spool 6 passes through the position of the temporary retaining ball 24 and is moved upward, but the ball 24 is not secured to the position.
Since the lower wheel 6 is provided with a groove 27 in the same phase as the wheel 4, the lower wheel 6 is
7 passes through the ball 24 position and does not get caught on the ball 24. Therefore, automatic deployment is achieved without any hindrance.

Conversely, when attempting to close the umbrella by holding the lower potter's wheel 6 in the open position shown in the right half of FIG. 1 and pulling it down to the closed position shown in the left half of the figure,
Since the lower lower potter's wheel 6 passes the ball 24 position downward in the groove 27, the part of the lower potter's wheel 6 that forms the engagement stepped portion 6a does not get caught on the ball 24, so that the umbrella can be closed. This prevents situations such as requiring extra force or causing the upper handle 1 to be unexpectedly shortened in the direction of the middle handle 2.

Next, a second embodiment shown in FIGS. 6-8 will be explained. In this second embodiment, a lower wheel 6 corresponding to the lower lower wheel 6 is replaced with a separate member such as the cylinder body 26. By forming the lower end portion of the lower wheel 6 to have a smaller diameter than the upper portion, the engaging step portion 6a corresponding to the engaging step portion 6a can be formed on the upper surface of the small diameter lower end portion by the lower wheel turning wheel 6. 6 is formed on the inner peripheral surface. Then, an overhanging portion 6c is provided in the small diameter lower end portion, which is a part in the circumferential direction and is formed to have the same diameter as the upper portion, and the inner surface side of this overhanging portion 6c is vertically extended from the engagement step portion 6a to the lower end. A groove 27 extends through the engagement step portion 6a and is open at the inner circumferential end side of the engagement step portion 6a. As in the first embodiment, this groove 27 is connected to the ball 24 for temporary fixing.
It is formed on the lower potter's wheel 6 at the protruding phase.

It goes without saying that the lower wheel 6 according to the second embodiment provides the same advantages as described above for the lower lower wheel 6 according to the first embodiment.

Of course, this invention can also be implemented as a lower potter's wheel for an automatic opening type two-stage telescopic umbrella. In addition, in a two-stage retractable umbrella, the umbrella handle is composed of an upper handle and a lower handle, and the locking piece for locking the lower potter's wheel is installed inside the upper end of the lower handle. It is possible to shorten the umbrella handle even if the interlocking tool corresponding to the above-mentioned interlocking tool 20 of 20 is not made telescopic. Therefore, it is possible to shorten the umbrella handle even if the interlocking tool corresponding to the above-mentioned interlocking tool 20 of A mechanism is provided between the operating portion and the locking piece.

As is clear from the above explanation, the lower potter's wheel of the automatic umbrella-type telescopic umbrella of this invention has an annular engagement mechanism in which the locking piece 15 for maintaining the umbrella closed state is engaged, which is released by manual operation. This is a lower potter's wheel for an automatically opening telescopic umbrella with a step 6a provided on the inner circumferential surface, and is a temporary fixing tool for temporarily fixing the upper handle 1 and the next umbrella handle part 2 so that they cannot be shortened. 24 protrudes outside the umbrella handle, the engagement step 6a is passed through vertically from the engagement step 6a to the lower end.
This structure is characterized by the provision of grooves 27 whose inner circumferential ends are open, and provides the following effects.

In other words, the lower potter's wheel of this invention has grooves 27 as described above that are in the same phase as the temporary stopper 24 to prevent the umbrella handle from shortening, so that the lower potter's wheel automatically moves on the umbrella handle when the umbrella is opened. When the umbrella is moved upward and when the umbrella is pulled down on the umbrella handle when closed, the engaging stepped portion 6a is held in the groove 27 by the temporary fastener 24.
This eliminates the possibility that the engaging stepped portion 6a will be caught by the temporary fastener 24, thereby solving the above-mentioned problems that were observed in the conventional devices.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an automatic opening type three-stage telescopic umbrella equipped with the first embodiment of this invention, Fig. 2 is a vertical sectional view of the essential parts of the umbrella, and Fig. 3 is Fig. 2. of-
4 is an exploded perspective view of the first embodiment, FIG. 5 is a perspective view showing a part of the umbrella, and FIG. 6 is a second embodiment of the invention. FIGS. 7a and 7b are partially omitted enlarged longitudinal cross-sectional views showing the main parts of an automatically opening telescopic umbrella equipped with an example.
FIG. 8 is a cross-sectional view taken along lines aa and b-b in the figure, and a perspective view showing a part of the umbrella equipped with the second embodiment. 1...upper handle, 2...middle handle, 3...lower handle, 6...(lower part)
Lower potter's wheel, 6a... Engagement stepped portion, 6b... Annular stepped portion, 6
c... Overhanging part, 15... Locking piece, 19... Operation part, 2
0... Interlocking tool, 26... Cylindrical body, 26a... Flange part, 27...
groove, 28...regulatory protrusion.

Claims (1)

[Scope of utility model registration request] A lower potter's wheel for an automatically opening telescopic umbrella, which is provided with an annular engagement step on the inner circumferential surface in which a locking piece for maintaining the closed state is engaged, which is released by manual operation. A temporary fixing tool for temporarily fixing the upper handle of the western umbrella and the next umbrella handle part in an irreducible manner is passed vertically from the engaging step part to the lower end in the phase where the handle protrudes outside the umbrella handle. A lower potter's wheel characterized in that a groove is provided with the inner circumferential end side of the engagement step part open.