JP2623065B2 - Automatic umbrella - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatically opened and closed umbrella.

[0002]

2. Description of the Related Art Most of the conventional umbrellas on the market are automatically opened by the spring force of a spring when a push button attached to an umbrella handle is pressed. Is convenient, but when pursed, it is necessary to use both hands against the elasticity of the above-mentioned spring, and this work involves considerable difficulty when carrying luggage etc. Not only can you get soaked when boarding a bus, tram or taxi. Also your luggage will get wet.

As a prior art in which the umbrella is automatically closed even when the umbrella is closed, a special chain belt is provided in a hollow column, which is reversibly operated by a motor to open and close.
No. laid-open publication is known. Further, two types of separate coil springs are used for opening and closing, and one of the coil springs is provided in a hollow support.
No. 8411 is known.

However, the structure of each of the prior arts is complicated, and in particular, the former requires an umbrella to be used on a rainy day because the battery and the motor need to be completely insulated, which increases the cost. . Also, batteries and motors are heavy and unsuitable for umbrellas held in one hand. In the latter case, the use of two types of coil springs acting in opposite directions is mechanically inconsistent in the first place, and in the above-described example, one of the coil springs is extremely long, which also increases the cost.

[0005]

According to the present invention, not only can the umbrella handle be automatically opened by an operating portion provided on the umbrella handle, but also the umbrella can be automatically folded to a certain extent by a single coil spring acting for automatic opening. Its purpose is to provide a commercially available automatic openable umbrella to the market.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is characterized in that ribs having one end pivotally attached to a rib at the upper end of a hollow support are provided, and a receiving bone is provided at an intermediate portion between the ribs. Are pivotally mounted at one end, and the other ends of the receiving bones are pivotally mounted on a single receiving bone wheel which slides axially with respect to the hollow support, and are further provided at an intermediate portion of each of the receiving bones. One end of the supporting bone is pivotally connected, and the other end of each supporting bone is pivotally connected to a single supporting bone that is integral with a sleeve-shaped slider that slides on the hollow support. Is located closer to the tip of the umbrella than the slider, a compression coil spring wound around the hollow support is interposed between the receiving bone wheel and the slider, and when the umbrella is opened, the compression coil spring The umbrella closing locking means which expands by its own restoring force, and in a state where the umbrella is closed, the distance between the passive wheel and the slider is short, compresses the compression coil spring, and locks the umbrella in the closed state. Is equipped on a part of the umbrella,

[0007] The slider and the lower end of the compression coil spring can be resiliently engaged only with a pawl provided on the slider, and when the umbrella is open in the hollow support, the compression coil is closed. Release means for releasing the engagement between the spring and the pawl is provided, and an operating part operable with one hand of the release means is provided on the umbrella handle or a part of a hollow support near the umbrella handle. When the compression coil spring is compressed, a stopper is provided on a part of the hollow support, the stopper being engaged with the lower end of the compression coil spring, and the hollow support is provided on the outer peripheral surface with at least one axial direction. A concave vertical groove is formed as an irregularly shaped hollow column, and the locking claw is provided in accordance with the position of the concave vertical groove. In the state where the claw is engaged, the tips of these pawls are movable in the concave vertical groove, and the compression stopper is located in the concave vertical groove and fixed to the hollow column. An automatic openable umbrella characterized by the fact that

According to another aspect of the present invention, there is provided an automatic umbrella-type umbrella according to the present invention, wherein the releasing means comprises a rod provided with a cam which is disengaged against the resilience of the pawl inside the hollow support. The rod is provided slidably up and down, and the rod is resiliently provided in a position direction where the cam deviates from a position where the stopper is disengaged, and the operation unit is provided as a push button. It is preferable that the rod is moved against the elastic force so that the cam at the tip thereof can be moved to the position where the pawl is released.

In order to achieve the above object, a rib is provided on one end of each of the ribs at the upper end of the hollow column of the automatic umbrella of the present invention. Are pivotally mounted at one end, and the other ends of the receiving bones are pivotally mounted on a single receiving bone wheel which slides axially with respect to the hollow support, and are further provided at an intermediate portion of each of the receiving bones. One end of the supporting bone is pivotally connected, and the other end of each supporting bone is pivotally connected to a single supporting bone that is integral with a sleeve-shaped slider that slides on the hollow support. Is located closer to the tip of the umbrella than the slider, a compression coil spring wound around the hollow support is interposed between the receiving bone wheel and the slider, and when the umbrella is opened, the compression coil Spring Is extended by its own restoring force, and in a state in which the umbrella is closed, the distance between the passive wheel and the slider is short, thereby compressing the compression coil spring and locking the umbrella in the closed state. In the device in which the means is provided in a part of the umbrella, the slider and the lower end of the compression coil spring can be resiliently engaged only with a pawl provided on the slider, and inside the hollow support, When the umbrella is open, release means for releasing the engagement between the compression coil spring and the pawl is provided, and an operating part operable with one hand of the release means is provided on the umbrella handle or one of the hollow posts near this. It is equipped in the department,
When the umbrella is closed, a compression stopper for compressing the compression coil spring and engaging the locking claw with a lower end of the compression coil spring is provided on a part of the hollow support, and the hollow support is provided on an outer peripheral surface thereof. It is a deformed hollow support having at least one axial concave longitudinal groove formed therein, wherein the retaining claw is provided in accordance with the position of the concave longitudinal groove, and the retaining claw is engaged with a lower end of the compression coil spring. In this state, it is preferable that the distal ends of these pawls are movable in the concave vertical groove, and the compression stopper is formed so as to protrude from the outer peripheral surface of the hollow support. .

[0010] In order to achieve the above-mentioned object, a rib is provided on one end of each of the ribs at the upper end of the hollow column of the automatic umbrella of the present invention. Are pivotally mounted at one end, and the other ends of the receiving bones are pivotally mounted on a single receiving bone wheel which slides axially with respect to the hollow support, and are further provided at an intermediate portion of each of the receiving bones. One end of the supporting bone is pivotally connected, and the other end of each supporting bone is pivotally connected to a single supporting bone that is integral with a sleeve-shaped slider that slides on the hollow support. Is located closer to the tip of the umbrella than the slider, a compression coil spring wound around the hollow support is interposed between the receiving bone wheel and the slider, and when the umbrella is opened, the compression coil Spring The umbrella is extended by its own restoring force, and in a state where the umbrella is closed, the distance between the passive wheel and the slider is short, thereby compressing the compression coil spring and locking the umbrella in the closed state. In one in which the stopping means is provided on a part of the umbrella, the slider and the lower end of the compression coil spring can be resiliently engaged only with a stopper claw provided on the slider, and are provided inside the hollow support. When the umbrella is in an open state, release means is provided for releasing the engagement between the compression coil spring and the pawl, and the operating part operable with one hand of the release means is provided on the umbrella handle or the hollow column near the same. Some are equipped,
When the umbrella is closed, a compression stopper for compressing the compression coil spring and engaging the locking claw with a lower end of the compression coil spring is provided on a part of the hollow support, and the hollow support is provided on an outer peripheral surface thereof. A deformed hollow support having at least two axial concave longitudinal grooves formed therein, wherein the retaining pawl is provided at at least one concave longitudinal groove position, and slides up and down along with the slider along the concave longitudinal grooves. Preferably, the compression stopper is provided freely, and the compression stopper is provided as a lower end of at least one concave vertical groove in which the stopper is not provided.

[0011]

According to the first aspect of the present invention, when the umbrella is completely closed, the receiving bone wheel and the slider are close to each other, and the upper end of the compression coil spring between them is fixed to the receiving wheel. The lower end of the umbrella is in a compressed state by being pressed against a compression stopper fixed to the hollow column, and the umbrella is closed by a locking means provided on the umbrella handle.

The lower end of the compression coil spring which is already in a compressed state is in a state in which a retaining claw is engaged or can be engaged. When opening the umbrella, similarly to the conventionally known umbrella, when the locking means is released, the lower end is engaged with the locking claw mounted on the slider, and the compression coil spring is extended by its elastic force, The receiving bone wheel is pushed up, and the ribs are respectively spread by the receiving bones whose lower ends are pivotally connected thereto. At this time, the supporting bone pivotally mounted in the middle of the receiving bone also expands, and the single supporting wheel that pivotally supports the supporting bone, that is, the slider also moves upward, and pushes up the supporting bone wheel. It stops when the cloth on the upper stopper or ribs is taut, that is, the umbrella stops in an open state. In order for the umbrella to stabilize when the umbrella is opened, the compression coil spring is usually not yet fully extended and is slightly compressed.

Next, to close the umbrella, when the operating portion of the release means provided on the umbrella handle or a part of the hollow support near the umbrella is operated, the pawl comes off from the lower end of the compression coil spring, and the pawl is released. Are pushed outward from the lower end of the compression coil spring, and their engagement is released, and the compression coil spring extends downward to a free dimension (FIG. 3).
In this state, the pawl again cannot be engaged with the lower end of the compression coil spring, and the compression coil spring loses the force of supporting the supporting bone wheel.
The support wheel slides in the direction of the umbrella handle due to the contraction restoring force of the umbrella cloth and its own weight such as the ribs, and becomes somewhat narrowed, and in this state the user enters the inside of the vehicle from the door of the vehicle and if it hits the rain, When the slider is forcibly approached to the umbrella handle with both hands in a place where there is not, the lower end of the compression coil spring hits a compression stopper provided on the hollow support.

When the slider is forcibly moved closer to the umbrella handle against the restoring force of the compression coil spring,
This compression coil spring is compressed and finally becomes shorter than the position of the pawl, and the pawl engages the lower end of the compression coil spring by the resilience of the pawl. Thus, the umbrella is prevented from expanding by the locking means. Hereinafter, this operation is repeated each time the umbrella is used, and the above operation is repeated.
A concave vertical groove is provided on the outer peripheral surface of the hollow support, and the retaining claw can move in the axial direction along the outer peripheral surface of the groove, and even while the slider moves toward the tip of the umbrella, the retaining claw and the compression coil can be moved. The engagement state of the lower end of the spring is maintained. In addition, since the compression stopper is provided in this groove, the hollow support does not protrude to the outside, and sliding with the slider is smooth.

According to the second aspect of the present invention, since the releasing means is configured as described above, the rod in the hollow column is pressed against the elastic force by pressing the push button as the operating part. And the cam at the tip moves to the locking claw releasing position, where it is released from the lower end of the compression cosle spring. Thus, the compression coil spring extends downward as in the first aspect of the present invention. When the hand is released from the push button, the rod returns to its original position by the resilience. However, since the compression coil spring is extended, the pawl again does not engage the lower end of the compression coil spring in that state.
Other operations are the same as those of the first aspect.

According to the third aspect of the present invention, the operation of the first aspect of the present invention is substantially the same as that of the first aspect of the present invention, and the lower end of the compression coil spring engages with a compression stopper projecting outside the hollow support. Therefore, the area of engagement between them becomes large, and not only the stop effect is remarkable, but also the wear deformation of these engagement portions is small.

According to the fourth aspect of the present invention, there is provided the first aspect.
In addition to providing substantially the same operation as that of the described invention, the position where the locking claw engages with the compression coil spring and the position where the compression stopper engages with the compression coil spring are provided at different phases with respect to the axis of the hollow support. Since the compression coil spring is provided at the position of the separate concave vertical groove, the lower end area of the compression coil spring which contacts the compression stopper becomes large, the stop effect is remarkable, and the abrasion deformation of these engaging portions is small.

[0018]

Embodiment 1 FIGS. 1 to 8 show an embodiment including the invention described in each claim.

First, the configuration of the embodiment of the prerequisite will be described. A rib 11 is pivotally attached to the ribs 11 at the upper end of the hollow support 10, and one end of a rib 13 is pivotally attached to an intermediate portion of the ribs 12 (not shown). The other end of the receiving bone 13 is pivotally connected to a single receiving bone wheel 14 that slides on the hollow column 10.

One end of a supporting bone 15 is pivotally connected to an intermediate portion of each receiving bone 13, and the other end of the receiving bone 15 is integrated with the upper end of a sleeve-like slider 16 slid on the hollow support 10. (See FIG. 1).

The receiving bone wheel 14 is located closer to the tip of the umbrella than the slider 16, and when the umbrella is opened, the distance between the receiving bone wheel 14 and the slider 16 becomes wider,
When the umbrella is closed, the length of each supporting bone 15 and the pivotal connection position between one end of each supporting bone 15 and the receiving bone 13 are determined so that these spaces are narrowed (see FIGS. 1 and 2).

Between the receiving bone wheel 14 and the slider 16, a compression coil spring (open coil spring) 18 whose upper and lower ends are pressed against each other is interposed, and the lower end of the compression coil spring 18 usually has a hollow slider. The slider 16 and the compression coil spring 18 are press-fitted into each other. The compression coil spring 18 is provided so as to be compressed when the umbrella is closed, to extend when the umbrella is opened, and to press the receiving bone wheel 14 against its upper limit position.

Accordingly, the compression coil spring 18 is somewhat compressed from the free extension dimension even when the receiving bone wheel 14 is at the upper limit position, and is usually 1/1 / the free extension dimension.
It is compressed to about 2 to 2/3.

An upper stopper for regulating the upper limit position of the receiving bone wheel 14 is provided on the hollow support, and a spring stopper 22 usually wound around the hollow support is provided.

When the umbrella is closed, an umbrella closing means 25 for maintaining the umbrella is provided on the umbrella handle 26. In the illustrated example, the short cylinder 27 fitted to the umbrella handle 26 is an umbrella handle. The umbrella 26 is provided so as to be slidable in the axial direction so as to be able to lock the tip 28 at the tip of each rib 12 of the closed umbrella (see FIG. 2).

The umbrella closing means 25 is not limited to the illustrated example. A hook which can be engaged and disengaged is provided by attaching a part of the slider 16 to a part of the umbrella handle 26 or a part of the hollow support 10 near the umbrella handle 26. It can be locked by
Even a tying strap having one end attached to a part of the part 2 falls within the prerequisites of the present invention.

Next, embodiments of the characteristic components of the present invention will be described. The slider 16 has a hollow shape which is considerably thicker than the hollow column 10, and is usually made of a hard synthetic resin molded product having high mechanical strength, and a support bone wheel 17 is integrally formed at an upper end thereof. The lower half of the compression coil spring 18 is inserted into the slider 16 from the upper end of the same.

The joint between the lower end of the compression coil spring 18 and the slider 16 is formed by the compression coil spring 1.
The lower end of 8 can be engaged and disengaged only by the pawl 30 provided on the slider 16, and as illustrated in FIG.
A hard shoe 19 is fitted to the lower end of the compression coil spring 18, and its lower edge angle 20 is formed in an angular shape capable of engaging with the stop claw 30 provided in the slider 16.

The stopper claw 30 is usually made of an elastic metal, the upper end 31 of which is locked or pivoted to a part of the slider 16, and the inwardly engaging step 32 is formed at the lower part.
As described above, the compression coil spring 18 can be engaged with the lower edge angle 20 of the shoe 19.

The tip of the retaining claw 30 extends further downward than the engaging step 32, and is inserted into the slit 23 provided in the hollow support 10 when the engaging step 32 engages the lower edge 20 of the shoe 19. And the inner surface is an inclined cam surface 3
There are three.

At least one receiving claw 30 is provided on the slider 16, and two or three receiving claws 30 are provided around the hollow support 10.
Even if they are provided, they are included in the embodiment of the present invention.

The hollow column 10 has at least one concave vertical groove 35 in accordance with the phase at which the retaining claw 30 is provided, and the upper end of this concave vertical groove 35 has the receiving claw 30 when the umbrella is opened. Is located just below the umbrella, and the lower end of the concave vertical groove 35 is formed at a position slightly closer to the tip of the umbrella when the umbrella is closed. .

In the example of FIG. 2, the lower end of the concave vertical groove 35 reaches the umbrella handle 26, and the lower portion of the concave vertical groove 35 is filled with the hard filler 36 and fixed to the hollow support 10. The lower end position of the concave vertical groove 35 is substantially shortened, and the upper end of the hard filler 36 serves as a lower compression stopper 37. The position of the compression stopper 37 is
When the umbrella is closed, it is slightly closer to the tip of the umbrella than the position of the engaging step 32 of the pawl 30.

That is, when the slider 16 is lowered, the engaging stopper 21 projecting into the inside of the shoe 19 at the lower end of the freely extending compression coil spring 18 comes into contact with the compression stopper 37 which is the lower end of the above-described concave vertical groove 35, When the slider 16 is forcibly lowered, the compression coil spring 18 is compressed.
Is compressed to a position higher than the engaging step portion 32 of the
Numeral 0 moves inward due to the elastic force, and the engaging step 32 of the pawl 30 is provided at a position where the engaging step 32 is engaged with the lower edge angle 20 of the shoe 19.

At the center of the compression stopper 37,
An escape groove 38 into which the tip of the pawl 30 can be inserted is provided. The slit 23 is provided at the upper end of the concave vertical groove 35, and when the slider 16 is raised to the upper limit position, the projection 21 of the shoe 19 and the cam surface 3 of the pawl are formed.
3 passes through the upper ends of the concave vertical grooves 35, these are located in the slits 23, and the cam surfaces of the pawls 30 project inward through the slits 23 into the hollow columns 10 having a circular cross section. Become. In the hollow support 10, there is provided a release means for releasing the stopper 30 from the lower end of the compression coil spring 18.

That is, a rod 40 slidable up and down is provided in the hollow support 10 and its cross-sectional shape is the inner shape of the hollow support of the irregularly shaped portion where the concave vertical groove 35 is formed. It is similar to. The rod 40 may be made of metal or a synthetic resin molded product, and there is no particular limitation on the material.

The upper end of the rod 40 extends further above the upper end of the concave vertical groove 35, and a cam 41 is integrally formed at the end thereof.
6 is at the upper limit position, the cam surface 33 of the pawl 30
It is located farther away. The lower end of the rod 40 reaches the inside of the umbrella handle 21, and the rod 40 is pulled down by the operation unit 42 provided on the umbrella handle 21, and the cam 4
1 abuts against the cam surface 33 of the receiving claw 30 and presses the receiving claw 30 outward against this elastic force, and the engaging step portion 32 of the receiving claw 30 becomes square at the lower end of the compression coil spring 18. The rod 40 and the cam 41 are resiliently equipped so that the rod 40 and the cam 41 return to the upper position when the finger is removed from the operation unit 42.

The above-mentioned operating section 42 of the above-mentioned releasing means
As a specific structure, a tongue link mechanism 43 which is a kind of a booster mechanism attached to the lower end of the rod 40 is provided.
The spring 40 for returning the rod 40, the cam 41, and the tongue ring mechanism 43 to the original position is provided in a part of them. The above-mentioned concave vertical groove 35 is required at least one at a position where the receiving claw is provided.
Even if three strips are provided at an interval, they are included in the embodiment of the present invention (see FIG. 9).

When there are two or more concave vertical grooves 35, the receiving claw 30 and the shoe 19
1 may be provided, but the embodiment of the present invention also includes a case where the concave vertical groove 35 through which the receiving claw 30 passes and the concave vertical groove 35 through which the protrusion 21 passes is different. (See FIG. 9).

When the projection 19 and the concave vertical groove 35 through which the receiving claw 30 passes are different from each other, the lower end of the concave vertical groove 35 through which the projection 19 passes becomes the stopper 37, and the concave vertical groove 35 through which the receiving claw 30 passes. Is provided below the stopper position to such an extent that the receiving claw 30 does not hit the lower end.

In the above-described example, the lower end of the concave vertical groove 35 or the upper end of the hard filler 36 fixed in the concave vertical groove 35 has been described as the compression stopper 37, as shown in FIG. A gutter-like member 39, which is a separate member, is partially attached to the outside of the hollow support 10 in an axial direction by an appropriate fixing means. The upper end of the gutter 39 is used as the compression stopper 37 and fits with the hollow support 10 at the lower end of the slider 16. A relief groove 16a is provided in the axial direction so that the compression stopper 37 does not come into contact with the inner peripheral surface to be joined. Therefore, an embodiment in which the inner peripheral surface 16b of the portion other than the escape groove 16a is a sliding surface with the hollow support 10 is also included in the embodiment of the present invention.

First, the state in which the umbrella is closed will be described. The receiving bone wheel 13 and the slider 16 both approach the umbrella handle 26, and the projection 21 of the lower end shoe 19 of the compression coil spring 18.
Is compressed by being pressed against a stopper 38 provided on a part of the hollow support 10, and the engaging step 32 of the retaining claw 30 is engaged with the angular lower edge 20 of the shoe 19.

The ribs 12 are respectively connected to the hollow columns 10.
The umbrella locking means 25 and the short cylinder 27 are slid to the outside of the outlet 28 of the rib 12 to keep the umbrella closed.

Next, the operation and action of opening the umbrella will be described. When the locking means 25 is released by an appropriate method as in the conventional prior art, the locking claw 30 is engaged with the lower edge 20 of the shoe 19, which is the lower end of the compression coil spring 18, so that the compression coil spring 18 It cannot be extended downward.

Accordingly, the compression coil spring 18 extends upward and pushes the receiving bone wheel 14 upward. With this rise, each of the receiving bones 13 is pushed up and spreads radially, and pushes the main bone 12. At this time, a supporting bone 15 is pivotally supported in the middle of each receiving bone 13, and a lower end of the supporting bone 15 is pivotally supported by a supporting bone wheel integrated with the slider 16.
The slider 16 is also raised, and the lower end of the compression coil spring 18 is also raised.

When the receiving wheel 14 further rises,
The receiving bone wheel 14 is pressed against the spring stopper 22,
The umbrella cloth stops in tension. At this time, the above-described compression coil spring 18 is not completely expanded, and has a size of about 乃至 to ／ of a completely free extension size.

Next, the operation and action of closing the umbrella will be described.
When the push button 44 serving as an operation unit provided on the umbrella handle is pressed, the tongue link mechanism 43 slides the rod 40 in the hollow column 10 toward the umbrella handle 26 against the restoring force of the spring 45.

At this time, the cam 41 integral with the rod 40 moves together, and pushes the cam surface 33 of the pawl 30 from the inside, and the pawl 30 moves outward against its resilient force, and the engaging step The part 32 is disengaged from the lower edge angle 20 of the shoe 19 (FIG. 3).
Chain line).

The lower end of the compression coil spring 18 is released by the disengagement of the retaining claw 30 and extends downward, and loses the supporting force of the upper end of the compression coil spring 18 supporting the receiving bone wheel 14. The umbrella closes to some extent due to its own weight, such as the bone 13, and further pushes down the slider 16 via each supporting bone 15.

At this time, the lower end of the compression coil spring generally hits the stopper slightly above the umbrella handle 26 of the hollow support 10, though it depends on the coefficient of friction between the receiving bone wheel 14, the compression coil spring 18 and the slider and the hollow support 10. The umbrella descends to a point where it is almost closed.

To return the umbrella to its original fully closed state, the umbrella handle 26 is held with one hand and the slider 16 is forcibly brought close to each other with the other hand.
When the slider 16 approaches the umbrella handle 26, the lower end of the compression coil spring 18 presses against the compression stopper 37, and when the slider 16 further approaches the umbrella handle 26, the compression spring 18 is compressed and the lower end of the The position of the lower edge angle 20 is closer to the tip of the umbrella than the engaging step 32 of the retaining claw 30, the retaining claw 30 moves inward by the resilient force, and the engaging step 32 engages the lower edge 20. In this state, the umbrella is kept closed by the locking means 25. Depending on the type of the locking means 25, the slider 16 is automatically locked to a part of the umbrella handle 26 or the hollow column 10.

[0052]

According to the first aspect of the present invention, which is constructed and operated as described above, the elastic force of a single compression coil spring is utilized, and the umbrella is automatically operated by one-handed operation in the same manner as in the prior art. When the umbrella is opened, it can be closed automatically by releasing the locking claw that engages the lower end of the compression coil spring and the slider with the releasing means by one-handed operation in the state where the umbrella is opened, and in the rain. This is extremely convenient when getting on and off a bus or a tram taxi. Since at least one concave vertical groove is provided in the hollow support, and a claw is provided on the slider in accordance with this position, the lower part of the claw travels in this concave vertical groove when the slider descends. When the slider is raised, the pawl has an effect of securely holding the engaging state with the lower end of the compression coil spring. Further, since a stopper for compressing the compression coil spring is provided in the concave vertical groove, after the lower end of the compression spring comes into contact with the stopper, if the slider is forcibly brought closer to the umbrella handle, the compression coil spring is again turned on. Can be given resilience.

In the second aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described above, the above-mentioned releasing means includes a rod provided with a cam capable of releasing the pawl at the tip in the hollow support, and a one-hand operated push button for operating this rod is provided on an umbrella handle or in the vicinity thereof. With one hand because it was provided in a part of the hollow support of
The locking pawl and the compression coil spring can be released, and the front rod is not visible at all from the outside, so the appearance is good.

According to the third aspect of the present invention, since the compression stopper is formed so as to protrude from the outer peripheral surface of the hollow column, the engagement area with the lower end of the compression coil spring is increased, and wear of these engagement portions is reduced. Low degree and withstand long-term use.

According to the fourth aspect of the invention, in addition to the effects of the other aspects of the invention, a concave vertical groove in which the pawl can move and a compression stopper for restricting the movement of the lower end of the compression coil spring are provided. Since the recessed vertical groove is formed as a separate concave vertical groove, the compression stopper does not require an escape groove for releasing the retaining claw, and the structure of the stopper portion is simplified. In addition, the area of engagement with the lower end of the compression coil spring for compression is large, and the same effect as the invention according to claim 4 is obtained.

Effects of the Embodiment In the embodiment, since the pawl 30 is provided in the slider 16 in the form of a sleeve, the pawl 30 is not visible from the outside, is not only good in appearance, but also is safe without damaging the fingertip.
Further, since the stopper 37 contacting the shoe 19 at the lower end of the compression coil spring 18 is located inside or at the lower end of the concave vertical groove 35, the stopper 37 does not protrude from the outer surface of the hollow support 10,
Not only is the appearance good, but also the inner shape of the lower end of the sleeve 16 that slides on the hollow support 10 is not a perfect cylinder, and these sliding portions are stabilized. In the compression stopper having the structure shown in FIG. 10, it is not necessary to provide the protrusion 21 that protrudes inward particularly on the shoe 19 of the compression coil spring 18, and the engagement area between the two is large and strong.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal front view with an umbrella opened.

FIG. 2 is a partially cutaway front view of the umbrella handle with the umbrella closed;

FIG. 3 is a partially enlarged longitudinal sectional front view of the state of FIG. 1;

FIG. 4 is a bottom view taken along line 4-4 in FIG. 2;

FIG. 5 is a plan view taken along line 5-5 in FIG. 2;

FIG. 6 is a partially enlarged perspective view of a hollow support column.

FIG. 7 is an enlarged perspective bottom view of the lower end of the compression coil spring.

FIG. 8 is an enlarged perspective view of a receiving claw.

FIG. 9 is a sectional view of FIG. 2 showing a state where another embodiment of the hollow support is used;
FIG. 9 is an enlarged cross-sectional bottom view taken along line -9.

FIG. 10 is a perspective view showing another embodiment of the compression stopper.

[Sign]

 DESCRIPTION OF SYMBOLS 10 Hollow support 16 Slider 18 Compression coil spring 30 Receiving 32 Engagement step part 40 Rod 41 Cam 42 Operation part A Release means

Claims (4)

(57) [Claims] A rib having one end pivotally attached to each of the ribs at the upper end of the hollow column is provided. One end of a receiving bone is pivotally attached to an intermediate portion between the ribs. A single supporting bone wheel sliding in the axial direction with respect to the hollow column is pivotally mounted, and one end of a supporting bone is pivotally mounted at an intermediate portion of each of the receiving bones. The ends are each pivotally attached to a single supporting bone wheel integral with a sleeve-like slider that slides on the hollow column, and the receiving bone wheel is positioned on the tip side of the umbrella with respect to the slider. A compression coil spring wound around the hollow column is interposed between the bone wheel and the slider, and when the umbrella is open, the compression coil spring expands by its own restoring force, and when the umbrella is closed. , Passive The distance between the roller and the slider is short, and the umbrella closing and locking means for compressing the compression coil spring and locking the umbrella in a closed state is provided in a part of the umbrella. The lower end of the compression coil spring can be resiliently engaged only with the pawl provided on the slider. When the umbrella is open in the hollow support, the engagement between the compression coil spring and the pawl is achieved. Is provided on the umbrella handle or a part of the hollow support near the umbrella handle, and when the umbrella is closed, the compression coil spring is provided. A compression stopper is provided on a part of the hollow support for compressing the locking pawl to engage the lower end of the compression coil spring, and the hollow support has at least one outer circumferential surface. In the state where the locking claw is engaged with the lower end of the compression coil spring, the locking claw is provided in accordance with the position of the recessed vertical groove. The distal ends of these pawls are movable in the concave vertical groove, and the compression stopper is located in the concave vertical groove and is fixed to the hollow support. Automatic openable umbrella. 2. The release means is provided with a rod having a cam which is disengaged against the resilience of the pawl so as to be vertically slidable in the hollow support. The operating portion is provided as a push button, and the rod is moved against the resilient force, so that the tip of the operating portion is provided. 2. The umbrella according to claim 1, wherein the cam is movable to a position where the pawl is released. 3. A rib having one end pivotally attached to each of the ribs at the upper end of the hollow support, and one end of a receiving bone is pivotally attached to an intermediate portion between the ribs. A single supporting bone wheel sliding in the axial direction with respect to the hollow column is pivotally mounted, and one end of a supporting bone is pivotally mounted at an intermediate portion of each of the receiving bones. The ends are each pivotally attached to a single supporting bone wheel integral with a sleeve-like slider that slides on the hollow column, and the receiving bone wheel is positioned on the tip side of the umbrella with respect to the slider. A compression coil spring wound around the hollow column is interposed between the bone wheel and the slider, and when the umbrella is open, the compression coil spring expands by its own restoring force, and when the umbrella is closed. , Passive The distance between the roller and the slider is short, and the umbrella closing and locking means for compressing the compression coil spring and locking the umbrella in a closed state is provided in a part of the umbrella. The lower end of the compression coil spring can be resiliently engaged only with the pawl provided on the slider. When the umbrella is open in the hollow support, the engagement between the compression coil spring and the pawl is achieved. Is provided on the umbrella handle or a part of the hollow support near the umbrella handle, and when the umbrella is closed, the compression coil spring is provided. A compression stopper is provided on a part of the hollow support for compressing the locking pawl to engage the lower end of the compression coil spring, and the hollow support has at least one outer circumferential surface. In the state where the locking claw is engaged with the lower end of the compression coil spring, the locking claw is provided in accordance with the position of the recessed vertical groove. 3. The method according to claim 2, wherein the distal ends of these pawls are movable in the concave vertical groove, and the compression stopper is formed so as to protrude from the outer peripheral surface of the hollow column. Automatic openable umbrella. 4. A rib having one end pivotally mounted on each of the ribs at the upper end of the hollow support, and one end of each of the receiving bones is pivotally mounted at an intermediate portion between the ribs. A single supporting bone wheel sliding in the axial direction with respect to the hollow column is pivotally mounted, and one end of a supporting bone is pivotally mounted at an intermediate portion of each of the receiving bones. The ends are each pivotally attached to a single supporting bone wheel integral with a sleeve-like slider that slides on the hollow column, and the receiving bone wheel is positioned on the tip side of the umbrella with respect to the slider. A compression coil spring wound around the hollow column is interposed between the bone wheel and the slider, and when the umbrella is open, the compression coil spring expands by its own restoring force, and when the umbrella is closed. , Passive The distance between the roller and the slider is short, and the umbrella closing and locking means for compressing the compression coil spring and locking the umbrella in a closed state is provided in a part of the umbrella. The lower end of the compression coil spring can be resiliently engaged only with the pawl provided on the slider. When the umbrella is open in the hollow support, the engagement between the compression coil spring and the pawl is achieved. Is provided on the umbrella handle or a part of the hollow support near the umbrella handle, and when the umbrella is closed, the compression coil spring is provided. A compression stopper is provided on a part of the hollow support to compress the stopper and engage the lower claw with the lower end of the compression coil spring. The concave claw is formed as an irregularly shaped hollow strut in the axial direction, and the locking claw is provided at at least one position of the concave longitudinal groove, and is slidable up and down along with the slider along the concave vertical groove. The umbrella according to claim 1 or 2, wherein the compression stopper is provided as a lower end of at least one concave vertical groove not provided with the locking claw.