JPH0870919A - Automatic opening umbrella - Google Patents

Abstract

PURPOSE: To allow each receptacle rib of an umbrella to be curved in a desired arch form by forming a coupling tool secured to the base end of the receptacle rib in such a structure that an embracing part is provided continuously from a pivoting bracket to be pivoted on a mounting base, an arm part is extended from the embracing part, and a pivot joint bracket for pivoting a sub-rib is installed at the tip of the arm part. CONSTITUTION: Each receptacle rib 6 is made from a rod having flexibility, and a coupling tool 11 is secured to the base end of the receptacle rib 6. The coupling tool 11 is so arranged that an embracing part 21 to embrace the base end of the receptacle rib 6 is installed continuously from a pivoting bracket 20 to be pivoted on a mounting base 4, an arm part 22 extending in the axial direction of the receptacle rib 6 is stretched from the embracing part 21, and that a pivot joint bracket 23 for pivoting of a sub-rib 7 is installed at the tip of the arm part 22. The arm part 22 is formed with approx. U-shape cross-section, and a flexible part 24 is provided which is flexural alongside the receptacle rib 6. This permits the receptacle rib 6 to be curved in the desired arch form, and stability of the framework when umbrella is opened can be achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic umbrella-opening type umbrella, and more particularly to an improved umbrella.

[0002]

2. Description of the Related Art Conventionally, an automatic umbrella-type umbrella is provided with an upper wheel fixed to an upper end portion of a center rod, a slidable outer member slidably mounted on the center rod, and mutually separated from each other via an opening spring. The biased middle and lower wheels, the ribs whose base ends are pivotally connected to the upper wheels, and the bones whose base ends are pivotally connected to the center wheels and whose distal ends are pivotally connected to the middle of the ribs in the longitudinal direction. It is known to consist of a ossicle having a proximal end pivotally attached to the lower wheel and a distal end pivotally connected to the longitudinal midway of the receiving bone.

In order to reduce the cost, weight and productivity of the frame, the applicant of the present invention uses a flexible rod material reinforced with fibers such as glass fiber or carbon fiber to receive the bone. We offer western umbrellas with bones.

In providing an automatic umbrella-type umbrella using such a bone receiving member, the present applicant has
A pivot bracket for pivoting the base end of the bone to the center wheel and a pivot bracket for pivoting the ossicle in the longitudinal middle of the bone are used. That is, the pivot bracket is fixed by caulking so as to hold the outer peripheral surface of the base end of the receiving bone. Further, the pivot bracket metal member is fixed by crimping so as to embrace the outer peripheral surface of the bone at a predetermined position of the bone.

[0005]

According to the above-mentioned prior art, since a pair of metal fittings including a pivotal bracket metal fitting and a pivotal bracket metal fitting must be prepared, the cost is high.

[0006] When these metal fittings are fixed to the receiving bone, first, the pivot bracket is fixed to the base end of the receiving bone by caulking, and then a distance from the base end of the receiving bone by a predetermined distance is measured. In this case, the mounting position of the pivot bracket is to be determined, and the pivot bracket must be fixed to the receiving bone at the correct position. In the case of a skeleton structure using a cover and a flexible rod as described above, in order to stabilize the skeleton at the time of opening the umbrella, the receiving bone bulges downward between the rib and the center wheel. It is preferable to support the rib by bending it into an arcuate shape, and to make this possible, the pivot point of the rib, the bone, and the child bone, as well as the pivot point for each wheel, is precisely determined according to the predetermined dimensions. This is because they must be arranged. For this reason, in the case of a configuration in which a pair of metal fittings are fixed as in the conventional technique, the fixing work is difficult and complicated, and if the fixing is performed in a state of being displaced from a predetermined position, the fixing work is not performed. I have to start over.

[0007] In this regard, if one pair of brackets is formed by integrating the pair of pivot brackets and the pivot bracket, the problems of cost and positioning work can be solved at once. Is found. For example, the pivot bracket is formed in a long cylindrical shape,
A pivot bracket may be connected to one end of the bracket.

However, under such a configuration in which the receiving bone is inserted into such a long cylindrical metal fitting, the receiving bone becomes rigid in a long region of the cylindrical metal fitting, so that the originally required flexibility is required. This causes a new problem that the bone cannot be stably supported by the receiving bone at the time of opening the umbrella.

[0009]

SUMMARY OF THE INVENTION The present invention provides an automatic umbrella-type open umbrella which solves the above-mentioned problems. The umbrella is constituted by an upper wheel fixed to an upper end of a center rod. , A middle wheel and a lower wheel which are slidably externally attached to the center rod and mutually urged in the direction away from each other via an opening spring, a rib which has its base end pivotally connected to the upper wheel, and Bone which is pivotally attached to the center wheel and the tip is pivotally connected to the middle part of the rib in the longitudinal direction, and the base is pivotally connected to the lower part and the tip is pivotally connected to the middle part of the bone in the longitudinal direction. In an automatic umbrella type umbrella comprising a rib, the receiving bone is formed by a flexible rod material, and a connecting tool is fixed to a base end of the receiving bone, and the connecting tool is formed in a center wheel. A holding portion for holding the base end of the receiving bone from the pivot bracket portion to be pivotally connected is connected, An arm portion extending from the holding portion in the axial direction of the skeleton is extended, and a pivotal bracket portion for pivotally connecting the child bone is provided at the tip of the arm portion, and the arm portion is formed to have a substantially U-shaped cross section. The point is that a flexible portion that can bend and bend along the bone is formed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1, an upper wheel 2 is fixed to an upper end portion of a center rod 1, and a base end of a rib 3 is pivotally connected to the upper wheel 2. In addition, a middle wheel 4 and a lower wheel 5 are slidably inserted in the middle rod 1, a base end of a bone 6 is pivotally attached to the middle wheel 4, and a base end of a child bone 7 is attached to the lower wheel 5. Is pivotally attached. In addition, the middle wheel 4 and the lower wheel 5 are urged to separate from each other via an opening spring 8.

The distal end of the receiving bone 6 is pivotally connected to the middle part of the rib 3 in the longitudinal direction, and the distal end of the child bone 7 is pivotally connected to the longitudinal part of the receiving bone 6.

[0013] Of the parent bone 3 and the receiving bone 6, at least the receiving bone 6, and in the illustrated embodiment, both the bones 3 and 6, are obtained by extruding a resin reinforced by fiber such as glass fiber or carbon fiber. It is made of a flexible rod having a circular or semicircular cross section. For this reason, the pivot bracket bracket 9 is caulked and fixed to the proximal end of the rib 3, and the bracket 9 is pivotally attached to the upper wheel 2. In addition, the pivot bracket bracket 1 is attached to the midpoint of the rib 3 in the longitudinal direction.
0 is fixed by caulking, and the tip of the receiving bone 6 is pivotally attached to the metal fitting 10. On the other hand, a connecting tool 11 to be described later is fixed to the base end of the receiving bone 6, and one end of the connecting tool 11 is pivotally connected to the center wheel 4, and the other end is connected to the distal end of the rib bone 7. Further, a connecting bracket 12 is fixed to the distal end of the receiving bone 6 by caulking, and the connecting bracket 12 is pivotally connected to the pivot bracket 10 of the rib 3. A tip 13 of the rib 3 is provided with a dew tip 13. On the other hand, the skeleton 7
Is made of a thin steel wire having flexibility.

In the closed state shown in FIG. 1, the central rod 1 is provided with a repellant 14 for releasably locking the lower wheel 5, and the repellant 14 includes a push button portion 15 and a push button portion 15.
Has a claw portion 16 which can be protruded and retracted from the peripheral surface of the inner rod 1 by pushing the center rod 1. Therefore, when the lower wheel 5 is lowered along the center rod 1, the frame is closed and the locking hole 17 of the lower wheel 5 is locked to the claw 16 of the cissing 14, thereby maintaining the closed state.

The push button portion 15 of the repellent 14 from the closed state.
When is pushed, the claw portion 16 disengages from the locking hole 17, and the middle and outer races 4 and 5 are automatically lifted along the middle rod 1 while being separated by the opening umbrella spring 8, as shown in FIG. Open the umbrella. Since the stopper tube 19 is provided below the upper wheel 2 via the buffer spring 18, the raised middle wheel 4 comes into contact with the stopper tube 19 and stops, thereby maintaining the open state.

In the open state shown in FIG. 2, the receiving bone 6
It is curved in an arc shape that bulges downward between the rib 3 and the intermediate rocker 4, and elastically supports the rib 3. That is, the receiving bone 6
Is pushed up by the center wheel 4 to a position substantially perpendicular to the center rod 1.
Is curved in a bow shape between the pivot bracket 10 of the rib 3 and the center wheel 4, thereby supporting and stabilizing the rib 3. In addition, in the case of the example shown in FIG.
It is curved in a bow shape that bulges upward between and, and stabilizes the skeleton 6 by elastically supporting it. Therefore, in order to enable such an opened state, the ribs 3, the ribs 6, and the ribs 7
A link structure is provided in which the pivot points of each other and the pivot points for the wheels 2, 4, and 5 are arranged below a predetermined dimension.

As shown in FIGS. 2 to 4, the connecting member 11 of the receiving bone 6 is a length for holding the proximal end peripheral surface of the receiving bone 6 from a pivot bracket portion 20 which is pivotally connected to the center wheel 4. A cylindrical holding portion 21 is continuously provided, and an arm portion 22 extending from the holding portion 21 in the axial direction of the receiving bone 6 is extended, and the distal end of the arm portion 22 pivotally connects the child bone 7. A binding bracket 23 is provided, and the arm 22 is formed to have a substantially U-shaped cross section, thereby forming a flexible portion 24 that can be bent along the receiving bone 6.

The connecting member 11 is integrally formed of a metal plate such as steel.
A short cylindrical additional holding portion 25 for holding the peripheral surface of the receiving bone 6 is provided at a middle portion in the longitudinal direction of the receiving member 6, and a part of the peripheral surface of the receiving bone 6 is further held by the pivot bracket portion 23. This constitutes the auxiliary holding section 26.

Before being fixedly attached to the receiving bone 6, the connecting member is formed in a U-shaped cross section over substantially the entire length as shown in FIG. The stopper portion 27 is formed by superimposing, and the stopper portion 27 receives the base end face of the receiving bone 6 by the narrowed portion. Each of the holding portion 21, the additional holding portion 25, and the pivot bracket portion 23 constitutes a pair of tongue pieces 21a, 25a, 23a extending upward from a base portion having a U-shaped cross section. In addition, shaft holes 28 and 29 are formed in the pivot bracket portion 20 and the pivot bracket portion 23, respectively.

Therefore, when the connecting tool 11 is attached and fixed to the skeleton 6, as shown in FIG. 3, the skeleton 6 is fitted to the base portion having the U-shaped cross section, and the base end surface of the skeleton 6 is fixed. With the tongues 21a, 21a deformed by caulking while being in contact with the stopper portion 27 and positioned, the rib 6
A holding portion 21 for pressing and holding the peripheral surface of the tongue piece 2 is formed.
By crimping the 5a, 25a, an additional holding portion 25 for pressing and holding the peripheral surface of the receiving bone 6 is formed, and the tongue pieces 23a,
By crimping the base of 23a, an auxiliary holding portion 26 for pressing and holding a part of the peripheral surface of the receiving bone 6 is formed.

In this manner, the distance D1 between the shaft hole 28 of the pivot bracket 20 and the stopper 27, and the distance between the stopper 27
D2 between the shaft hole 29 of the pivot bracket portion 23 and
Is set in advance as a predetermined dimension, and D1 + D2
Are invariable, and therefore, there is no deviation from a predetermined dimension as in the related art using the pair of metal fittings described above. Further, the base end surface of the skeleton 6 has a stopper portion 27.
, The shaft hole 28 of the pivot bracket portion 20 of the connecting tool 11 at the base end of the receiving bone 6, and the shaft hole of the connecting bracket 12 at the distal end of the receiving bone 6. Is also set according to a predetermined dimension, and there is no possibility that the dimensions will be out of order.

In addition, the connecting part 11 has an arm 22
It is not formed in a tubular shape that holds the peripheral surface of the skeleton 6, but has a U-shaped cross section that exposes the peripheral surface of the skeleton 6, preferably a semicircular groove shape or an arc groove shape shallower than that. Since it is formed, the entire portion L extending from the end of the holding portion 21 toward the tip direction of the rib 6 is configured as the flexible portion 24. Therefore, in the open state as shown in FIG. 2, it is possible to bend the ribs 6 into a desired arc shape without impairing the flexibility of the ribs 6.

[0023]

According to the present invention, in an automatic umbrella-type umbrella in which the receiving bone 6 is made of a flexible rod, the receiving bone 6 is provided.
The connecting tool 11 fixed to the base end of the base is connected to the holding bracket 21 for holding the base end of the skeleton 6 from the pivoting bracket 20 that is pivotally attached to the center wheel 4, and the holding part 21 is also provided. From bone 6
An arm portion 22 extending in the axial direction of the
Pivot bracket portion 23 for pivotally connecting the child bone 7 to the tip of 2
Since the structure is provided, there is no deviation from the predetermined size as in the prior art using the pair of metal fittings described above.

Moreover, according to the present invention, the arm portion 2
2 is not a non-flexible cylindrical shape, but a flexible U-shaped cross section
Since it is formed in a shape and thereby constitutes the flexible portion 24 which can be bent along the receiving bone 6, in the open state,
The receiving bone 6 can be bent in a desired arcuate shape without impairing the flexibility of the receiving bone 6, and there is an effect that the stability of the framework at the time of opening the umbrella can be guaranteed.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a closed state of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing an opened state of the embodiment.

FIG. 3 is an enlarged perspective view showing an embodiment of the skeleton and the connecting tool in an assembled state.

FIG. 4 is an enlarged perspective view showing an embodiment of a receiving bone and a connecting member in an exploded state before assembly.

[Explanation of symbols]

 1 Middle Rod 2 Upper Roller 3 Main Bone 4 Middle Roller 5 Lower Roller 6 Reincarnation 7 Child Bone 8 Opening Spring Spring 11 Connecting Tool 14 Hajiki 20 Pivoting Bracket Part 21 Holding Part 22 Arm Part 23 Pivoting Bracket Part 24 Flexible Part 25 Additional Holding Part 26 Auxiliary Holding Part 27 Stopper Part 28 Shaft Hole 29 Shaft Hole

Claims (1)

[Claims] 1. An upper wheel fixed to an upper end of a center rod,
A center wheel and a lower wheel which are slidably externally attached to the center rod and mutually urged in directions away from each other via an opening spring, a rib which has its base end pivotally connected to the upper wheel, and A bone that is pivotally attached to the wheel and has a distal end pivotally connected to the longitudinal midway of the rib, and a child that has a proximal end pivotally connected to the lower wheel and has a distal end pivotally connected to the longitudinal midway of the receive bone. In the automatic umbrella type umbrella comprising a bone, the receiving bone is formed of a flexible rod material, and a connecting tool is fixed to a base end of the receiving bone, and the connecting tool is pivotally connected to a center wheel. A holding portion for holding the proximal end of the receiving bone is continuously provided from the pivot bracket portion to be attached, and an arm portion extending in the axial direction of the receiving bone from the holding portion is extended.
A pivoting bracket portion for pivotally connecting the child bone is provided at the tip of the arm portion, and the arm portion is formed to have a substantially U-shaped cross section to form a flexible portion that can be flexed along the bone. A self-opening umbrella that is characterized by being made.