JP7374538B1 - umbrella - Google Patents

Abstract

[Problem] To provide a technology that can suppress flapping of the main rib of an umbrella due to wind pressure. [Solution] A center shaft (21) having an upper potter's wheel (22) and a lower potter's wheel (23), and a plurality of master ribs (3) provided in the circumferential direction with respect to the upper potter's wheel (22), the proximal end of which is An inner rib (31) rotatably connected to the upper potter's wheel (22), and an inner rib (31) bendably connected to the inner and outer sides of the umbrella (1) with respect to the inner rib (31), When the inner rib (31) is expanded, it is given a restoring force to the reference position, and because it is formed of thermoplastic resin containing a fiber filler and has a tapered shape, it does not bend against the inner rib (31) in response to wind pressure. and an outer rib (32) that can be bent in addition to the outer rib (32), and a plurality of ribs (3) are provided in the circumferential direction with respect to the lower potter's wheel (23), and the proximal end is pivotable to the lower potter's wheel (23). An umbrella (1) comprising a strut (4) which is connectable and whose tip is connected to the tip of said inner rib (31). [Selection diagram] Figure 1

Description

The present invention relates to an umbrella.

Conventionally, there is an umbrella in which a coil spring is provided in the middle of a main rib extending radially from an upper potter's wheel, and the main rib is bent so as to be able to return to the wind pressure, thereby deflecting the wind pressure (for example, Patent Document 1).

Japanese Patent Application Publication No. 2011-206505

The umbrella of Patent Document 1 only has a coil spring installed between the main ribs of existing umbrellas, and cannot absorb wind pressure in a large and soft manner, and the main ribs tend to flap in response to the wind pressure.

The present invention is as follows, for example. In the following, the drawing symbols are used for reference.
[1] Referring to FIG. 1, a center shaft (21) having an upper potter's wheel (22) and a lower potter's wheel (23);
A plurality of master ribs (3) provided in the circumferential direction with respect to the upper potter's wheel (22),
an inner bone (31) whose base end is rotatably connected to the upper potter's wheel (22);
The inner rib (31) is bendably connected to the inside and outside of the umbrella (1), and when the umbrella (1) is expanded, a restoring force to the reference position is provided, and a fiber filler is provided. an outer rib (32) that is formed of a thermoplastic resin and has a tapered shape so that it can bend in addition to bending with respect to the inner rib (31) in response to wind pressure; and,
A plurality of blades are provided in the circumferential direction of the lower potter's wheel (23), a base end is rotatably connected to the lower potter's wheel (23), and a distal end is rotatably connected to the distal end of the inner bone (31). a bone (4) to be
An umbrella (1) comprising:
[2] In the umbrella (1) described in [1],
In the umbrella (1), the length of the outer bone (32) is 120% or more of the length of the inner bone (31).
[3] With reference to FIG. 5, in the umbrella (1) described in [1],
The outer rib (32) is a solid umbrella (1) with a cross-sectional shape that is flat in the inner and outer directions of the umbrella (1).
[4] In the umbrella (1) described in [1],
The umbrella (1) has the inner rib (31) made of metal.
[5] With reference to FIG. 6, in the umbrella (1) described in [1],
In the direction in which the main bone (3) extends, from the connection point (F) between the inner bone (31) and the support bone (4) to the connection center (S) between the inner bone (31) and the outer bone (32) The distance (H) to the umbrella (1) is 1/30 or less of the length of the main rib (3).
[6] With reference to FIG. 10, in the umbrella (1) according to any one of [1] to [3] and [5],
The inner bone (31) is
an inner bone main body (310) whose proximal end is rotatably connected to the upper potter's wheel (22);
An umbrella (1) comprising a fulcrum joint (53) made of resin and fixed to the inner bone main body (310), to which the outer bone (32) and the strut (4) are rotatably connected.
[7] With reference to FIG. 11, in the umbrella (1) described in [6],
The outer bone (32) includes a shaft portion (321) extending on both sides in a first direction perpendicular to the axial direction of the central shaft (21),
The distal end of the fulcrum joint (53) includes a pair of arm portions (311) including bearing portions (312, 312A) that rotatably receive the shaft portion (321), and a pair of arm portions (311) that rotatably receive the shaft portion (321). An umbrella (1) formed with hinge springs (521, 522) that press down on the outer surface of the proximal end of the outer bone (32) and apply a restoring force to the outer bone (32) to a reference position.
[8] With reference to FIG. 11, in the umbrella (1) described in [6],
The outer bone (32) includes a shaft portion (321) extending on both sides in a first direction perpendicular to the axial direction of the central shaft (21),
The fulcrum joint (53) is formed with a pair of arm portions (311) including bearing portions (312, 312A) that rotatably receive the shaft portion (321),
At least one of the shaft portions (321) extends through the bearing portion (312, 312A) to the outside of the arm portion (311),
A coil part (511) fitted into the shaft part (321), a first arm part (512) extending from the coil part (511) and connecting to the inner bone (31), and a first arm part (512) extending from the coil part (511) and connecting to the inner bone (31). An umbrella (1) comprising a second arm (513) that extends and connects to the outer rib (32), and includes a torsion coil spring (51) that applies a restoring force to the outer rib (32) to a reference position.
[9] With reference to FIG. 7, in the umbrella (1) described in any one of [1] to [5],
The outer bone (32) includes a shaft portion (321) extending on both sides in a first direction perpendicular to the axial direction of the central shaft (21),
A pair of arm portions (311) including bearing portions (312, 312A) rotatably receiving the shaft portion (321) are formed at the tip of the inner bone (31),
At least one of the shaft portions (321) extends through the bearing portion (312, 312A) to the outside of the arm portion (311),
A coil part (511) fitted into the shaft part (321), a first arm part (512) extending from the coil part (511) and connecting to the inner bone (31), and a first arm part (512) extending from the coil part (511) and connecting to the inner bone (31). An umbrella (1) comprising a second arm (513) that extends and connects to the outer rib (32), and includes a torsion coil spring (51) that applies a restoring force to the outer rib (32) to a reference position.
[10] With reference to FIG. 12, in the umbrella (1) according to any one of [1] to [5],
A wave-shaped rod-shaped spring (54) that connects the outer bone (32) to the inner bone (31) in a state separated from the inner bone (31) and applies the restoring force to the outer bone (32),
The wave-like rod-shaped spring (54) has a first end connected to the inner bone (31), a second end connected to the outer bone (32), and a center portion that has a spring that prevents deformation of the second end. An umbrella (1) in which a corrugated portion (521) that imparts restoring force to the second end side is formed.
[11] With reference to FIG. 13, in the umbrella (1) according to any one of [1] to [5],
The master rib (3) is fixed to the inner bone (31) in a state where the first end is inserted into the inner bone (31) from the distal end surface of the inner bone (31), and the second end is inserted into the inner bone (31) from the distal end surface of the inner bone (31). The outer bone (32) is connected to the inner bone (31) in a state where the outer bone (32) is separated from the inner bone (31), and applies a restoring force to the outer bone (32) to the reference position. An umbrella (1) equipped with a coil spring (56).
[12] Referring to FIG. 10, the outer rib (32) constituting the distal end side of the main rib (3) is in a position of the umbrella (1) with respect to the inner bone (31) constituting the proximal end side of the main rib (3). It is bendably connected to the inside and outside, and when the umbrella (1) is expanded, a restoring force is applied to the reference position, and the tip of the strut (4) is connected to the tip of the inner bone (31). A fulcrum joint (53) used in the umbrella (1),
The inner bone (31) includes an inner bone main body (310) whose proximal end is rotatably connected to the center shaft (21) of the umbrella (1), and the fulcrum joint (53),
The fulcrum joint (53) is made of resin and is fixed to the tip of the inner bone main body (310), to which the outer bone (32) and the strut (4) are rotatably connected. .
[13] With reference to FIG. 11, in the fulcrum joint (53) described in [12],
The outer bone (32) includes a shaft portion (321) extending on both sides in a first direction perpendicular to the axial direction of the central shaft (21),
The fulcrum joint (53) includes a pair of arm portions (311) including bearing portions (312, 312A) that rotatably receive the shaft portion (321), and a pair of arm portions (311) that include bearing portions (312, 312A) that rotatably receive the shaft portion (321), and a pair of arm portions (311) that rotatably receive the shaft portion (321). A fulcrum joint (53) is formed with hinge springs (521, 522) that suppress the outer surface of the proximal end of (32) and apply restoring force to the outer bone (32) to the reference position.
[14] With reference to FIG. 11, in the fulcrum joint (53) described in [12],
The outer bone (32) includes a shaft portion (321) extending on both sides in a first direction perpendicular to the axial direction of the central shaft (21),
The fulcrum joint (53) is formed with a pair of arm portions (311) including bearing portions (312, 312A) that rotatably receive the shaft portion (321),
At least one of the shaft portions (321) extends through the bearing portion (312, 312A) to the outside of the arm portion (311),
The coil part (511) of the torsion coil spring (51) is fitted into the shaft part (321), and the first arm part (512) extending from the coil part (511) of the torsion coil spring (51) is connected to the fulcrum joint (53). ), and a second arm portion (513) extending from the coil portion (511) of the torsion coil spring (51) connects to the outer bone (32) and applies a restoring force to the outer bone (32) to the reference position. A fulcrum joint (53) to be provided.

It is a schematic block diagram of an umbrella. It is a perspective view of an umbrella seen from below. An enlarged view for explaining the structure of the dowel. FIG. 4 is a diagram for explaining the variable state of the external bone during periods of no wind to strong wind. FIG. 5(A) is a perspective view showing an external bone having a circular cross section. FIG. 5(B) is a perspective view showing an external bone having a flattened circular cross section. FIG. 6(A) is a diagram for explaining a connection center, a connection point, and a support structure. FIG. 6(B) is a diagram showing a method of connecting the inner bone and outer bone using a shaft. FIG. 6(C) is a diagram showing a method of connecting the inner bone and outer bone using an elastic member. FIG. 7(A) is a side view showing a combination of a contact connection and a torsion coil spring in the connection mechanism between the inner bone and the outer bone. FIG. 7(B) is a cross-sectional view showing the connection mechanism. FIG. 8(A) is a side view showing the connection mechanism of FIG. 7 in which a part of the hole is an open receiving part. FIG. 8(B) is a cross-sectional view showing the connection mechanism. FIG. 9(A) is a side view showing a connecting mechanism in which a hinge spring is added to the connecting mechanism of FIG. 7. FIG. FIG. 9(B) is a cross-sectional view showing the connection mechanism. FIG. 10(A) is a side view showing the connection mechanism of FIG. 7 in which the distal end of the inner bone is used as a fulcrum joint. FIG. 10(B) is a cross-sectional view showing the connection mechanism. FIG. 11(A) is a side view showing the connection mechanism of FIG. 9 in which the distal end of the inner bone is used as a fulcrum joint. FIG. 11(B) is a cross-sectional view showing the connection mechanism. FIG. 12(A) is a side view showing a connection mechanism that combines a non-contact connection and a wave-shaped rod-shaped spring. FIG. 12(B) is a cross-sectional view showing the connection mechanism. FIG. 13(A) is a side view showing a connection mechanism that combines a non-contact connection and a cylindrical coil spring. FIG. 13(B) is a cross-sectional view showing the connection mechanism.

(1. Basic configuration of umbrella 1)
FIG. 1 is a schematic configuration diagram of an umbrella 1. In this specification, the upper and lower sides of FIG. 1 will be referred to as the upper and lower sides.
The umbrella 1 includes a center shaft 2, a main rib 3, and a support rib 4.
The center shaft 2 has a center shaft main body 21, an upper wheel 22 and a lower wheel 23, and a handle 24 gripped by a user is provided at the lower end.

The center shaft body 21 is longitudinal and cylindrical.
The upper potter's wheel 22 is fixed to the upper part of the center shaft body 21.
The lower potter's wheel 23 is held by a lower flipper 26 at the lower part of the center shaft body 21 when the umbrella 1 is closed. When opening the umbrella 1, the holding release operation of the lower flip 26 is performed, and the lower potter's wheel 23 becomes movable on the center shaft body 21. The lower wheel 23 is then slid upward by the user to a holding position by the upper wheel 25 provided above the lower wheel 26 and below the upper wheel 22 in the center shaft body 21. Alternatively, the lower potter's wheel 23 slides upward until it comes into contact with the set rivet 231 (to the holding position by the upper flicker 25) due to the upward biasing force of the biasing member. When the lower potter's wheel 23 is held at this position by the upper flipper 25, the umbrella 1 is placed in an open state (expanded state) as shown in FIG. When closing the umbrella 1, the user performs an operation to release the upper flip 25, slides the lower wheel 23 downward to the position held by the lower flip 26, and the lower wheel 23 is held at that position by the lower flip 26. This brings the umbrella 1 into a closed state.

A plurality of ribs 3 are provided in the circumferential direction of the upper potter's wheel 22 (see FIG. 2), and the number is appropriate, for example eight. The main rib 3 is bent at least on the inside and outside of the umbrella 1 at its tip side, so that wind pressure on the umbrella 1 can be released. A sheet 7 (FIG. 2) is stretched between these ribs 3. Wind pressure applied to the umbrella 1 can be released by allowing the outer rib 32 to bend up and down relative to the inner rib 31 and return to its original position. Moreover, it is possible to prevent each of the outer ribs 32 from bending upward and causing the umbrella 1 to become so-called sloppy.

The sheet 7 has elasticity that can follow the deformation of each main rib 3, and preferably has an elasticity of 20% or more. The sheet 7 is passed through the stone stopper 211 whose center portion is the upper end of the central shaft body 21, and is sewn or sewn onto the stone stopper 211, at multiple locations in the extending direction of each main rib 3, and at the tip 33 that is fitted to the tip of the main rib 3. Connected by adhesive etc. When the umbrella 1 is expanded, the main rib 3 curves outward in a convex manner (FIG. 4), and the inclination angle θ from the horizontal plane (FIG. 4(A)) is, for example, 10°.

The main rib 3 includes an inner bone 31 and an outer bone 32.
The inner rib 31 has a base end rotatably connected to the upper potter's wheel 22 and can rotate inside and outside the umbrella 1 with respect to the center shaft 2. It is preferable that the inner bone 31 is hard to bend and does not break strongly. The material of the inner frame 31 may be, for example, a metal such as iron, stainless steel, or an aluminum alloy, or a resin such as a thermoplastic resin containing a fibrous filler. By increasing the rigidity or mechanical strength of the inner rib 31, the proximal end of the outer rib 32 can be firmly supported, the angle of the outer rib 32 can be changed smoothly, and the umbrella 1 can be adjusted evenly when the umbrella 1 receives wind pressure. Can suppress flapping. For example, the inner frame 31 is press-molded from an aluminum alloy and has a U-shaped cross-section to reduce weight. In addition, the inner bone 31 has a substantially uniform cross-sectional shape in the length direction.

The outer rib 32 is bendably connected to the inner rib 31 on the inside and outside of the umbrella 1, and is given a restoring force to the reference position when the umbrella 1 is expanded.

The braces 4 are provided for each main rib 3, and a plurality of braces 4 are provided in the circumferential direction with respect to the lower potter's wheel 23. The base end of the strut 4 is rotatably connected to the lower potter's wheel 23 and can be rotated to the inside and outside of the umbrella 1 with respect to the center shaft 2. The tip of the strut 4 is inserted between a pair of arms 611 (FIG. 3) of the dowel 61, and a shaft 612 (FIG. 3) rotatably held by the arms 611 is passed through. By such means, the tip of the strut 4 is rotatably connected to the tip of the inner bone 31.

Like the inner bone 31, the strut 4 preferably has high rigidity or mechanical strength, and may have the same material and cross-sectional shape as the inner bone 31.

(2. Function and design of inner bone 31 and outer bone 32)
In Patent Document 1, one main bone is divided in the middle and connected by coil springs, and there is no concept of differentiating the function and design of the inner bone and the outer bone.
In this embodiment, the functions and designs of the inner rib 31 and the outer rib 32 are completely different in order to suppress flapping of the main rib 3 against wind pressure. Specifically, in this embodiment, the outer rib 32 is made of resin and has a tapered shape.

4(A) shows the state of the outer frame 32 when there is no wind, FIG. 4(B) shows the state of the outer frame 32 when there is a weak wind, FIG. 4(C) shows the state of the outer frame 32 when the wind is slightly strong, and FIG. In FIGS. 4A to 4D, the state of the external bone 32 when there is no wind is shown by a solid line, and the state of deformation caused by wind is shown by a dashed-dotted line. In FIGS. 4A to 4D, illustration of the lower side of the center shaft 2 is omitted.
In this embodiment, the outer bone 32 can be bent relative to the inner bone 31, and can be largely deformed relative to the inner bone 31. At the same time, by making the outer rib 3 made of resin and having a tapered shape, flexibility is imparted to the outer rib 32, allowing it to bend. When these are in harmony, the outer rib 32 can be flexibly and variably moved by greatly bending against wind pressure. Thereby, the umbrella 1 of this embodiment is able to release a large amount of wind pressure, and at the same time, it is possible to suppress flapping of the umbrella 1 at that time, and the user can use the umbrella 1 easily and safely.

(3. Configuration of external bone 32 regarding bending function)
(3-1. Material of outer rib 32)
In order to ensure that the outer rib 32 has a sufficient function of bending greatly against wind pressure and returning to its original state, the outer rib 32 is formed of a thermoplastic resin containing a fibrous filler. The thermoplastic resin may be polycarbonate. The fibrous filler may be glass fiber, carbon fiber, cellulose fiber, or the like. By forming the exoskeleton 32 with a resin composition containing a fibrous filler, it is possible to provide the exoskeleton 32 with a high level of rigidity (particularly bending elasticity), creep properties, resilience from bending, and durability. Good moldability can be achieved.

(3-2. Design of external bone 32)
(3-2-1. Shape of external bone 32)
FIG. 5(A) shows an external bone 32 with a circular cross section, and FIG. 5(B) shows an external bone 32 with a flat circular cross section.
The outer bone 32 has a tapered shape to enable large and flexible bending. Thereby, the external bone 32 can be bent to a greater degree than when the outer bone 32 is not tapered. The external bone 32 may have a circular cross-sectional shape, as shown in FIG. 5(A), or may have another shape. The outer rib 32 may be flat in the inner and outer directions of the umbrella 1, as shown in FIG. 5(B), in order to make it easier to bend in the inner and outer directions of the umbrella 1. The outer bone 32 may have an elliptical shape or any other shape as long as it is flat. The outer bone 32 may be solid.

(3-2-2. Length of external bone 32)
In order to increase the variable amount of the outer rib 32 and further reduce the wind pressure on the umbrella 1, the length of the outer rib 32 should be 120% or more of the length of the inner rib 31 in the direction in which the outer rib 3 extends. preferable.

(4. Support structure of external bone 32)
FIG. 6(A) is a diagram for explaining the connection center S, the connection point F, and the support structure 6. FIG.
There are two methods for connecting the inner bone 31 and the outer bone 32: a method using a shaft shown in FIG. 6(B), and a method using an elastic member shown in FIG. 6(C). When a shaft is used, the shaft becomes the connection center S between the inner bone 31 and the outer bone 32. When using an elastic member such as a coil spring, the longitudinal center of the elastic member becomes the connection center S between the inner bone 31 and the outer bone 32. The tip of the strut 4 is connected to a dowel fixed to the inner bone 31 using a shaft. This axis becomes the connection point F between the strut 4 and the inner bone 31.

Here, as shown in FIG. 6(A), as the support structure 6 for the outer bone 32, the inner bone 31, the bridge 4, and the portion 212 between the upper potter's wheel 22 and the lower potter's wheel 23 in the central shaft body 21 are rotatable with respect to each other. are connected to form a triangular framework. Although a truss structure is known in which the load is applied only in the axial direction to each element even when a load is received, the support structure 6 is similar to a truss structure and is strong against input of loads from the proximal end of the external bone 32. It is a structure.

The connection center S between the inner bone 31 and the outer bone 32 is preferably located near the connection point F, which is the apex of the support structure 6 having the highest strength and rigidity. Specifically, in the direction in which the main rib 3 extends, the distance H from the connection point F to the connection center S between the inner rib 31 and the outer rib 32 is preferably 1/30 or less of the length of the outer rib 3. For example, it is preferable that the distance H is 25 mm or less. Accordingly, in this embodiment, since the base end of the outer rib 32 can be firmly supported by the support structure 6, the outer rib 32 can be smoothly deformed, and shaking and wobbling that occur in the umbrella 1 due to the change of the outer rib 32 can be suppressed. .

(5. Connection method of inner bone 31 and outer bone 32)
(5-1. Contact, non-contact)
There are two methods for connecting the inner bone 31 and the outer bone 32: A1) and A2) below.
A1) Connecting the inner bone 31 and the outer bone 32 in a state where they are in contact with each other by the shaft and the bearing part,
A restoring force is applied to the outer bone 32 by the variable device.
A2) While connecting the inner bone 31 and the outer bone 32 in a separated state using a variable device,
A restoring force is applied to the outer bone 32 by the variable device.

(5-2. Fulcrum joint 53)
The connection method between the inner bone 31 and the outer bone 32 includes the following B) included in A1).
B) The inner bone 31 and the outer bone 32 are connected to the fulcrum joint 53 (which is a multifunctional part with a built-in fulcrum and joint).
10, 11), and connect with an external variable device.
Alternatively, a restoring force is applied to the external bone 32 by a built-in variable part.

(5-3. Variable device)
Examples of variable devices that apply restoring force to the external bone 32 include the following C1) to C4).
C1) Torsion coil spring 51 (Fig. 9)
C2) Hinge springs 521, 522 (Fig. 9)
C3) Wave-shaped bar spring 54 (Fig. 12)
C4) Cylindrical coil spring 56 (Fig. 13)

(6. Combination of A1) contact connection and C1) torsion coil spring 51)
FIG. 7(A) is a side view showing the connection mechanism 5 between the inner bone 31 and the outer bone 32. FIG. 5(B) is a cross-sectional view showing the connection mechanism 5, in which only the inner bone 31 is hatched.
In the connection mechanism 5, a pair of arms 311 are formed at the distal end of the inner bone 31, protruding toward the distal end and facing each other in the horizontal direction. A hole portion 312 (bearing portion) passing through the arm portion 311 is formed in the arm portion 311 . A proximal end portion of the outer bone 32 is arranged between the arm portions 311 . The outer bone 32 includes a shaft portion 321 extending from the base end to both outer sides in the horizontal direction (first direction perpendicular to the axial direction of the central shaft 2). The hole portion 312 rotatably receives the shaft portion 321.

The outer rib 32 is given a restoring force by the torsion coil spring 51 to a reference position along the direction in which the main rib 3 extends (the position of the outer rib 32 when no wind pressure is applied to the umbrella 1 when the umbrella 1 is expanded). The coil portion 511 of the torsion coil spring 51 is fitted into the shaft portion 321 that protrudes outward from the arm portion 311 . The tip of an arm portion 512 (first arm portion) extending from one end of the coil portion 511 is bent inward and connected to the arm portion 512 by being inserted into a hole 313 formed on the side surface of the inner bone 31. , for example, is joined to the arm portion 512 with adhesive or the like. Similarly, the tip of the arm portion 513 (second arm portion) extending from the other end of the coil portion 511 is bent inward and inserted into the hole portion 322 formed on the side surface of the external bone 32 to be inserted into the arm portion 513. For example, it is joined to the arm portion 513 using an adhesive or the like. Such a connection mechanism 5 can achieve a configuration in which the outer bone 32 can be smoothly bent in the vertical direction with respect to the inner bone 31 and can provide a restoring force to the outer bone 32 to the reference position with a simple structure.

Note that the torsion coil springs 51 may be provided on both sides of the inner bone 31 and the outer bone 32 in the horizontal direction. The connection point F between the support bone 4 and the inner bone 31 is on the proximal side (the right side in FIG. 7(A)) of the connection center S of the outer bone 32 to the inner bone 31 (the central axis of the shaft portion 321) in the inner bone 31. , and located near the connection center S.

FIG. 8(A) is a side view showing the connection mechanism 5A. FIG. 8(B) is a cross-sectional view showing the connection mechanism 5A, in which only the inner bone 31 is hatched.
The part of the arm part 311 that rotatably receives the shaft part 321 is a closed circular hole part 312 in the connection mechanism 5, but in the connection mechanism 5A, it is a receiving part with a part of the hole open. 312A (bearing part). The other configuration of the connection mechanism 5A is the same as that of the connection mechanism 5. The size of the open portion of the receiving portion 312A is such that at least the shaft portion 321 can cross therethrough. In this embodiment, the receiving portion 312A includes an arc-shaped portion that receives the shaft portion 321, and a slit that extends from the arc-shaped portion to the tip of the arm portion 311 and is opened at the tip. In this embodiment, the outer bone 32 can be easily connected to the inner bone 31 by inserting the shaft portion 321 into the receiving portion 312A, sliding it all the way, and installing the torsion coil spring 51.

(7.C2) Adding hinge springs 521 and 522 to the connection mechanism 5 in Figure 7)
FIG. 9(A) is a side view showing the connection mechanism 5B. FIG. 9(B) is a cross-sectional view showing the connection mechanism 5B, in which only the inner bone 31 is hatched.
The connection mechanism 5B has hinge springs 521 and 522 added to the connection mechanism 5, and the other configurations are the same as the connection mechanism 5. The hinge spring 521 protrudes from the upper side of the distal end surface of the inner bone 31 in FIG. 9(A) (outside of the umbrella 1) between the arm parts 311, and has flexibility. The hinge spring 521 suppresses the outer surface of the proximal end of the outer rib 32 and urges the proximal end of the outer rib 32 toward the inside of the umbrella 1 when the outer rib 32 rotates to the outside of the umbrella 1 . The hinge spring 522 protrudes from the lower side of the distal end surface of the inner bone 31 in FIG. 9(A) (inside the umbrella 1) between the arm parts 311, and has flexibility. The hinge spring 522 presses the outer surface of the proximal end of the outer rib 32 and urges the proximal end of the outer rib 32 toward the inside of the umbrella 1 when the outer rib 32 rotates inside the umbrella 1 . In the connection mechanism 5B, in addition to the torsion coil spring 51, the hinge springs 521 and 522 can apply a restoring force to the external bone 32 to the reference position. Note that only one of the hinge springs 521 and 522 may be provided. The torsion coil spring 51 may not be provided. The hinge springs 521 and 522 may be provided in the connection mechanism 5A and the connection mechanism 5C (FIG. 10) described below.

(8-1. Fulcrum joint 53)
FIG. 10(A) is a side view showing the connection mechanism 5C. FIG. 10(B) is a cross-sectional view showing the connection mechanism 5C, in which only the fulcrum joint 53 is hatched.
In the connection mechanism 5C, the distal end of the inner bone 31 in the connection mechanism 5 of FIG. 7 is made into a fulcrum joint 53 that is separate from the inner bone 31. The other configurations are similar to the connection mechanism 5 of FIG. 7. In this embodiment, the inner bone 31 includes an inner bone main body 310 whose proximal end is rotatably connected to the upper potter's wheel 22, and an inner bone main body 310 made of resin and fixed to the inner bone main body 310, and the outer bone 32 and the support bone 4 are rotated. and a fulcrum joint 53 that is movably connected. A hole 531 is formed at the proximal end of the fulcrum joint 53, into which the distal end of the internal bone body 310 is fitted and joined. The other structure of the fulcrum joint 53 is the same as that of the distal end portion of the inner bone 31 in FIG.

The fulcrum joint 53 can be formed of a suitable resin, and can be formed of, for example, a thermoplastic resin containing a fiber filler such as glass fiber in order to obtain high rigidity and high strength. The inner bone body 310 may be made of metal such as iron, stainless steel, or aluminum alloy, or may be made of thermoplastic resin containing a fibrous filler. The outer bone 32 is rotatably connected to the fulcrum joint 53. The tip of the strut 4 is rotatably connected to the fulcrum joint 53 via a boss 61. The boss 61 may be integrated with the fulcrum joint 53 or may be separate. In this embodiment, manufacturing of the umbrella 1 can be facilitated by using a resin-made fulcrum joint 53 as a part with a complicated shape and making it separate from the inner rib 31. Since the part that supports the outer bone 32 is made into an independent part as the fulcrum joint 53, the inner bone main body 310 can be formed to a suitable thinness, and the fulcrum joint 53 can be formed thicker, thereby achieving the strength necessary to support the outer bone 32. can be easily secured. Although one end of the torsion coil spring 51 (the right end in FIG. 10(A)) is connected to the fulcrum joint 53, it may extend to the inner bone body 310 and may be connected to the inner bone body 310.

(8-2. Add C2) hinge springs 521 and 522 to fulcrum joint 53)
FIG. 11(A) is a side view showing the connection mechanism 5D. FIG. 11(B) is a cross-sectional view showing the connection mechanism 5D, in which only the fulcrum joint 53 is hatched.
The connection mechanism 5D has hinge springs 521, 522 added to the fulcrum joint 53 in the connection mechanism 5C. In other words, the fulcrum joint 53 is the tip of the inner bone 31 in the connection mechanism 5B in FIG. .

(9. Combination of A2) non-contact connection and C3) corrugated bar spring 54)
FIG. 12(A) is a side view showing the connection mechanism 5E, and shows a cross section of the slippage prevention tube 55. FIG. 12(B) is a cross-sectional view showing the connection mechanism E.
In the connection mechanism 5E, the outer bone 32 is bendably connected to the inner bone 21 while being separated from the inner bone 31, and the wave-like bar spring 54 applies a restoring force to the outer bone 32 to the reference position. The main rib 3 includes the wave-shaped rod-shaped spring 54 and the slippage prevention tube 55. The anti-slip tube 55 is a flexible metal plate rolled into a cylindrical shape, and has a distal end of the inner bone 31 and a proximal end of the outer bone 32 located away from the distal end of the inner bone 31. , and is joined to the outer surfaces of the inner bone 31 and the outer bone 32 by adhesive or the like. The anti-slip tube 55 may be a cylindrical rubber tube or a cylindrical coil. The displacement prevention tube 55 suppresses displacement of the outer bone 32 with respect to the inner bone 31 in the cross-sectional direction and the axial direction. Further, since the wave-shaped rod-shaped spring 54 has a greater function as a spring member than the slippage prevention tube 55, the slippage prevention tube 55 may be omitted.

The wave-shaped rod-shaped spring 54 is a rod-shaped spring member, and is attached to both sides in the horizontal direction of the distal end of the inner bone 31 and the proximal end of the outer bone 32 from the outside of the slippage prevention tube 55. A plurality of (for example, two) pins 541 are provided upright on both ends of the wave rod-shaped spring 54 in the longitudinal direction. On the other hand, at the distal end of the inner bone 31 and the proximal end of the outer bone 32, holes are provided at intervals along the direction in which the inner bone 31 and the outer bone 32 extend, in the center in the thickness direction of the inner bone 31 and the outer bone 32. 314 and 323 are formed. The pin 541 is inserted into the holes 314 and 323 and joined with adhesive or the like.

In this way, the wave rod-shaped spring 54 has its first end, which is on the right side in FIG. 12(A), connected to the inner bone 31, and its second end, which is on the left side in FIG. 12(A), is connected to the outer bone 32. A corrugated portion 521 is formed in the longitudinal center of the corrugated bar spring 54 . The corrugated portion 521 applies a restoring force to the second end side against deformation of the second end side, which is the left side in FIG. 12(A). The dowel 61 is provided inside the umbrella 1 on which the tip of the inner rib 31 is placed, at a position that does not overlap with the slippage prevention tube 55. The midpoint between the tip of the inner bone 31 and the base end of the outer bone 32 is the connection center S between the inner bone 31 and the outer bone 32.

In this example, since the outer rib 32 is connected to the inner rib 31 without using a shaft, it can be bent in an appropriate direction, and wind pressure can be efficiently released.

(10. Combination of A2) non-contact connection and C4) cylindrical coil spring 56)
FIG. 13 is a side view showing the connection mechanism 5F.
The connection mechanism 5F is also provided with a cylindrical coil spring 56 that bendably connects the outer bone 32 to the inner bone 31 while being separated from the inner bone 31 and applies a restoring force to the outer bone 32 to the reference position. The main rib 3 is configured to include this cylindrical coil spring 56. In the connection mechanism 5E, the first end of the cylindrical coil spring 56 is fixed to the inner bone 31 while being inserted into the inner bone 31 from the distal end surface of the inner bone 31. The second end of the cylindrical coil spring 56 is fixed to the outer bone 32 while being inserted into the outer bone 32 from the proximal end surface of the outer bone 32 . Specifically, a hole 315 is formed in the distal end surface of the inner bone 31, and a hole 324 is formed in the proximal end surface of the outer bone 32. The first end of the cylindrical coil spring 56 is inserted into the hole 315 and joined to the hole 315 by adhesive or the like. The second end of the cylindrical coil spring 56 is inserted into the hole 324 and joined to the hole 324 by adhesive or the like. The dowel 61 is provided inside the umbrella 1 at the tip of the inner rib 31.

Also in this example, since the outer rib 32 is connected to the inner rib 31 without using a shaft, it can be bent in an appropriate direction, and wind pressure can be efficiently released. Since the cylindrical coil spring 56 is connected to the distal end surface of the inner bone 31, the dowel 61 can be installed at the distal end of the inner bone 31. Therefore, in this example, since the connection point F between the stretcher 4 and the inner bone 31 can be placed in a position very close to the tip of the inner bone 31, the outer bone 32 can be firmly supported, and the umbrella 1 can It is possible to suppress the rattling.

The invention may be implemented in embodiments without departing from its characteristics. The embodiments, modifications, and effects are merely illustrative and should not be construed as limiting the present invention. Features and structures of the embodiments and variations can be added to and combined in various ways to obtain alternative configurations.

1...umbrella, 2...middle shaft, 3...main rib, 4...receiver, 22...upper potter's wheel, 23...lower potter's wheel, 31...inner bone, 32...outer bone, 53...fulcrum joint, 310...inner bone body.

Claims (14)

a center shaft having an upper wheel and a lower wheel;
A plurality of ribs provided in the circumferential direction with respect to the upper potter's wheel,
an inner bone whose base end is rotatably connected to the upper potter's wheel;
The inner rib is bendably connected to the inside and outside of the umbrella, and when the umbrella is expanded, it is given a restoring force to the reference position, and is made of thermoplastic resin containing a fibrous filler and is tapered. an outer bone that has a shape that allows it to bend in addition to bending with respect to the inner bone in response to wind pressure;
a plurality of support bones provided in a circumferential direction relative to the lower potter's wheel, a base end rotatably connected to the lower potter's wheel, and a tip end rotatably connected to a distal end portion of the inner bone;
Umbrella with. The umbrella according to claim 1,
The length of the outer bone is 120% or more of the length of the inner bone. The umbrella according to claim 1,
The outer rib is solid and has a cross-sectional shape that is flat in the inner and outer directions of the umbrella. The umbrella according to claim 1,
The inner rib is made of metal. The umbrella according to claim 1,
In the umbrella in which the main rib extends, the distance from the connection point between the inner bone and the support bone to the connection center between the inner bone and the outer bone is 1/30 or less of the length of the outer rib. The umbrella according to any one of claims 1 to 3 and 5,
The inner bone is
an inner bone body whose base end is rotatably connected to the upper potter's wheel;
An umbrella comprising: a fulcrum joint made of resin, fixed to the inner bone body, and to which the outer bone and the support bone are rotatably connected. The umbrella according to claim 6,
The external bone includes a shaft portion extending on both sides in a first direction perpendicular to the axial direction of the central shaft,
The distal end of the fulcrum joint includes a pair of arm portions each having a bearing portion that rotatably receives the shaft portion, and a pair of arm portions that hold the outer surface of the proximal end of the outer bone when the outer bone rotates, and set the outer bone at a reference position. An umbrella that is formed with a hinge spring that gives it resilience. The umbrella according to claim 6,
The external bone includes a shaft portion extending on both sides in a first direction perpendicular to the axial direction of the central shaft,
The fulcrum joint is formed with a pair of arm portions each having a bearing portion that rotatably receives the shaft portion;
At least one of the shaft portions extends through the bearing portion to the outside of the arm portion,
A coil part that is fitted into the shaft part, a first arm part that extends from the coil part and connects to the inner bone, and a second arm part that extends from the coil part and connects to the outer bone, and the second arm part extends from the coil part and connects to the outer bone. An umbrella equipped with a torsion coil spring that provides restoring force to the standard position. The umbrella according to any one of claims 1 to 5,
The external bone includes a shaft portion extending on both sides in a first direction perpendicular to the axial direction of the central shaft,
A pair of arm portions each having a bearing portion that rotatably receives the shaft portion are formed at a distal end portion of the inner bone;
At least one of the shaft portions extends through the bearing portion to the outside of the arm portion,
A coil part that is fitted into the shaft part, a first arm part that extends from the coil part and connects to the inner bone, and a second arm part that extends from the coil part and connects to the outer bone, and the second arm part extends from the coil part and connects to the outer bone. An umbrella equipped with a torsion coil spring that provides restoring force to the standard position. The umbrella according to any one of claims 1 to 5,
comprising a wave-shaped rod-shaped spring that connects the outer bone to the inner bone in a state separated from the inner bone and applies the restoring force to the outer bone;
The wave-shaped rod-shaped spring has a first end connected to the inner bone, a second end connected to the outer bone, and a center portion that applies a restoring force to the second end against deformation of the second end. An umbrella in which a corrugated part is formed. The umbrella according to any one of claims 1 to 5,
The main bone is fixed to the inner bone with a first end inserted into the inner bone from the distal end surface of the inner bone, a second end connected to the outer bone, and the outer bone is inserted into the inner bone from the distal end surface of the inner bone. An umbrella including a coil spring that connects to the inner bone in a separated state and applies a restoring force to the outer bone to a reference position. The outer bone constituting the distal end of the main rib is bendably connected to the inner and outer sides of the umbrella to the inner bone forming the proximal end of the main rib, and when the umbrella is expanded, a restoring force to the reference position is exerted. A fulcrum joint used in the umbrella, in which the tip of the bridge is connected to the tip of the inner bone,
The inner bone includes an inner bone main body whose proximal end is rotatably connected to the center shaft of the umbrella, and the fulcrum joint,
The fulcrum joint is made of resin and is fixed to the tip of the inner bone main body, and the outer bone and the support bone are rotatably connected to each other. The fulcrum joint according to claim 12,
The external bone includes a shaft portion extending on both sides in a first direction perpendicular to the axial direction of the central shaft,
The distal end of the fulcrum joint includes a pair of arm portions each having a bearing portion that rotatably receives the shaft portion, and a pair of arm portions that hold the outer surface of the proximal end of the outer bone when the outer bone rotates, and set the outer bone at a reference position. A fulcrum joint is formed with a hinge spring that provides restoring force to the fulcrum joint. The fulcrum joint according to claim 12,
The external bone includes a shaft portion extending on both sides in a first direction perpendicular to the axial direction of the central shaft,
The fulcrum joint is formed with a pair of arm portions each having a bearing portion that rotatably receives the shaft portion;
At least one of the shaft portions extends through the bearing portion to the outside of the arm portion,
A coil portion of the torsion coil spring is fitted into the shaft portion, a first arm portion extending from the coil portion of the torsion coil spring is connected to the fulcrum joint, and a second arm portion extending from the coil portion of the torsion coil spring is connected to the outer bone. A fulcrum joint that is connected to and applies a restoring force to the external bone to a reference position.

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