JP5173352B2 - Lower roll fixing structure on umbrella - Google Patents

Description

  The present invention relates to a lower rocker fixing structure in an umbrella, and more specifically, to a structure for maintaining a lower rocker that is slidable with respect to an intermediate rod when the umbrella is closed.

  Many umbrellas are provided with a mechanism for fixing the umbrella cloth in a folded state when not in use, in addition to a mechanism for fixing the umbrella cloth in an unfolded state when used. FIGS. 10A and 10B show an outline of a general umbrella opening mechanism and umbrella closing mechanism. In both the basic opening and closing mechanisms, the hollow lower lokuro 1 which is provided with a pivotal support portion of the receiving bone 4 and is guided and slid by the center rod 2 is fixed by repelling (6, 9). The structure is adopted.

  (A) is an outline of an opening mechanism. The umbrella is fixed to the center rod 2 and has an upper rocker 5 having a pivotal portion of the main bone 3, and a hollow cylindrical lower rocker 1 having a pivotal portion of the receiving bone 4 and guided and slid by the middle rod 2. The lower rocker 1 is integrally provided with a gripping portion 7 having a substantially cylindrical shape for a person to hold in his / her hand when the umbrella is opened and to slide the lower rocker 1 in the vertical direction. ing. A repellent (upper repellent) 6 capable of appearing and retracting in the intermediate rod 2 is built above the intermediate rod 2. The upper repellent 6 is a thin plate having a substantially triangular shape whose upper end is a horizontal bottom, and is urged in a protruding direction by a spring in the middle rod 2.

  When the lower croquette 1 is slid upward when the umbrella is opened, the upper repellent 6 is once pushed from the protruding state by the cylindrical inner wall of the lower rotator 1 and stored in the middle rod 2, and then the lower crochet 1 is further moved upward. Is released from the pressure by the inner wall of the cylinder, protrudes below the lower rocker 1, and its upper end contacts the lower edge of the lower rocker 1. Thereby, the downward movement of the lower lokuro 1 is disabled, and the opened state is maintained.

  (B) is an outline of the closing mechanism. A vertically long rectangular hole 8 is defined on the side surface of the gripping portion 7. A repelling (lower repelling) 9 similar to the upper repelling 6 is located at a position corresponding to the hole 8 when the center rod 2 is closed. Is built-in. The lower repelling 9 is a thin plate having a substantially triangular shape with a lower end as a horizontal base, and is biased in a protruding direction by a spring in the middle rod 2. When the lower rocker 1 is slid downward when the umbrella is closed, the lower repelling 9 is once pushed from the protruding state by the cylindrical inner wall of the lower rocker 1 and stored in the middle rod 2, and then the lower rocker 1 is moved. When further sliding downward, the pressure from the inner wall of the cylinder is released, the projection protrudes from the rectangular hole 8 of the lower rocker 1, and the bottom side abuts the lower end of the rectangular hole 8. Thereby, the upward sliding operation of the lower rocker 1 is disabled, and the closed umbrella state is maintained.

  The subject of the present invention is a lower rocker fixing structure when the umbrella is maintained in a closed state. In the conventional lower loft fixing structure, when opening an umbrella in a closed state, the lower repelling is pushed into the middle bar against the spring at the belly of the fingertip. At this time, the end face of the thin plate may bite into the belly of the fingertip and feel pain. Since the lower repellant has a structure in which the spring is housed in the middle rod, the spring may be caught in the middle rod, which may cause a failure in which the lower repellant cannot appear and disappear. It may become impossible to appear due to rust and deformation due to aging. Thus, there is a problem in the lokuro structure itself that requires lower repelling.

  Certainly, it can be said that the lower loro structure using the upper repellent is effective in maintaining the opened state. That is, in the lower lokuro structure that maintains the open umbrella state, it is necessary to fix the lower lokuro with a stronger force in order to receive the drag force that the umbrella cloth attempts to close. However, it is only necessary to fix the lower rocker to the extent that the dew does not open, and the complicated structure using the lower repelling is desirable if it can be omitted. . Further, since the strength naturally decreases at the part of the bottom repellent hole in the middle bar, it is better that the number of places where the strength is insufficient is as small as possible. Furthermore, when the umbrella is in an open state, the weight concentrates on the upper part where the umbrella cloth is unfolded, and the center of gravity of the umbrella is located above the center bar. A greater force is applied to the lower part of the sword. For this reason, there is a possibility that the middle bar breaks at the part of the lower and right repellent holes below the middle bar. In fact, when the middle bar breaks, it is often the part of the bottom hole of the lower reef.

  The present invention has been made in view of various problems that depend on a structure that maintains the closed umbrella state by fixing the lower lokuro using the lower repellent in the umbrella, and the object thereof is to use the lower repelled in the umbrella. The object is to provide a structure that maintains the closed umbrella by fixing the lower lokuro.

In order to achieve the above object, the present invention is a structure for maintaining a closed state by fixing a lower lokuro, which is provided with a pivotal support portion of a receiving bone and is slidably guided by an intermediate rod, below the intermediate rod. There,
A lower rocker fixing portion that is fixed to the middle rod at the position of the lower surface of the lower rocker when the umbrella is closed, and a suction portion provided below the lower rocker,
The lower rocker fixing part and the adsorption part can be switched between adsorption and repulsion by magnetic force. If the lower rocker fixing part and the adsorption part are adsorbed by sliding the lower rocker downward, an umbrella is closed. Fixed to the state, and when repelled by magnetic force, the fixation is released,
The lower runner fixing unit is a permanent magnet upper surface opposed to the suction portion is formed in a ring shape, with a rotatable center of the ring to the shaft, the upper surface radially of N and S poles Divided into multiple magnetic domains,
The attracting part is a permanent magnet formed in a ring shape whose lower surface facing the lower rocker fixing part matches the upper surface shape of the lower rocker fixing part, and is not rotatable about the center of the ring. It is divided into a plurality of magnetic domains of N pole and S pole so as to substantially coincide with the division shape of the magnetic domain in the fixed portion of the rock,
By rotating the runner fixing unit, switches the adsorption and repulsion between the upper surface and the suction portion of the lower runner fixing portion, and the lower runner fixed structure in the umbrella.

  Further, the rotation of the lower rocker fixing portion is limited to a predetermined angle that divides the magnetic domain, and is biased so as to return to the reference position with the rotation position in the suction state with the suction portion as a reference position. It may be configured such that the suction force is switched to the repulsive force when rotated by a predetermined angle from the state of being attracted to the surface.

Alternatively, a lower lokuro fixing part fixed to the middle rod at the position of the lower lokuro lower surface when the umbrella is closed, and an adsorption part provided below the lower rokuro,
The lower rocker fixing part and the adsorption part can be switched between adsorption and repulsion by magnetic force. If the lower rocker fixing part and the adsorption part are adsorbed by sliding the lower rocker downward, an umbrella is closed. Fixed to the state, and when repelled by magnetic force, the fixation is released,
The suction unit is a permanent magnet lower surface facing said lower runner fixing portion is magnetized in a predetermined magnetic pole,
The lower runner fixing unit is an electromagnet formed by winding a coil hollow cylindrical magnetic core which is retrofit in said rod,
The attracting part and the magnetic core can be attracted by magnetic force when the electromagnet is not excited,
When the electromagnet is energized by a power supply that comes with an umbrella, a cylindrical top surface facing said suction portion in the magnetic core, and a lower surface of the suction unit the same pole,
The lower rokuro fixing structure in the umbrella characterized by the above.

  According to the locro structure of the present invention, by adopting a structure in which the lower loro is fixed by magnetic force, repelling is unnecessary, and finger damage during repelling operation and umbrella malfunction due to repelling failure of repelling can be eliminated. In addition, it is possible to secure the strength below the middle bar when opening the umbrella and reduce the possibility of the middle bar breaking due to strong winds or the like.

  The basic structure of the umbrella adopting the lower rokuro fixing structure in the present invention is provided with an upper rokuro which is fixed to the upper end of the middle rod with the pivot portion of the main bone and the pivot portion of the receiving bone, as in the prior art. A lower rocker is slidably guided by the middle bar below the upper rocker, and the lower rocker is fixed at the upper part of the middle bar to be fixed in an opened state. In the present invention, no reference is made to the lower loft fixing mechanism for maintaining the opened state, and in the following embodiments of the present invention, the lower rokuro is fixed with the structure shown in FIG. Shall be maintained.

=== First Embodiment ===
FIG. 1 shows a closed state of an umbrella employing the lower rocker fixing structure according to the first embodiment of the present invention. FIG. 2 shows a schematic diagram of the lower rocro fixing structure. For ease of explanation, FIG. 2 shows a state where the umbrella is slightly opened from the closed state. The lower rocker fixing structure in the first embodiment includes a suction portion 11 made of a magnetic material provided on the lower end surface of the lower rocker 1 and a position of the lower surface of the suction portion 11 when the umbrella is closed below the center rod 2. And a lower rocker fixing part 12 made of a flat hollow cylindrical magnetic body. At least one of the attracting part 11 and the lower rocker fixing part 12 is magnetized, and if only one is magnetized, both can be attracted by magnetic force. When both are magnetized, the lower surface of the attracting portion 11 and the lower surface 13 of the lower rocker fixing portion 12 are magnetized so as to have different polarities, and both can be attracted.

  In the first embodiment, a hollow cylindrical permanent magnet is used as the adsorbing portion 11, the appearance of the lower roller 1 is formed on the adsorbing portion 11, and a hollow cylindrical resin molded body forming the gripping portion 7 is wrapped around. The lower end surface of the cylindrical magnet 11 is exposed in a donut shape on the lower end surface of the lower roller 1. In addition, a ring 12 made of a non-magnetized magnetic material that is substantially the same shape as the lower surface of the attracting portion 11 is mounted and fixed above the upper surface of the handle 30 of the umbrella below the center rod 2, and this is fixed to the lower rocking fixing portion. 12 and so on.

  With the above-described lower rocker fixing structure, when the umbrella is closed, the lower surface of the attracting part 11 made of a cylindrical magnet exposed at the lower end surface of the lower rocker 1 comes into contact with the upper surface of the lower rocker fixing part 12 and The lower rocker fixing part 12 is attracted by the magnetic force, and the umbrella is held in a closed state. As a result, even if there is no lower repelling or binding with a name cloth (band) sewn on the umbrella cloth 40, the tip 50 does not open and the umbrella can be fixed in a closed state. For example, even when an umbrella is carried indoors in rainy weather, it is convenient that the dew 50 does not open even if an umbrella without a lower repel is not tied together with a band. In addition, the hand does not get wet with raindrops attached to the umbrella cloth 40 when the band is bound.

=== Second Embodiment ===
3 (A) and 3 (B) show the outline of the lower rocker fixing structure according to the second embodiment of the present invention. FIG. 3 also shows the lower roll fixing structure in a state where the umbrella is slightly opened. The basic configuration (A) in the second embodiment is substantially the same as that in the first embodiment, but both the attracting portion 11 and the lower rocker fixing portion 12 are permanent magnets. As shown, the surfaces (21, 22) facing each other are different from each other in that they are radially divided into a plurality of magnetic domains (23, 24). The magnetic domains (23, 24) in the attracting part 11 and the lower rocker fixing part 12 are formed at equal angular intervals. In this example, the magnetic domains (23, 24) are divided into four magnetic domains (23, 24) by 90 ° intervals. . Further, the lower rocker fixing part 12 can be rotated about the center rod 2, and if the magnetic domains of the attracting part 11 and the lower rocker fixing part 12 are opposed to each other with different polarities, both are attracted and the closed state is maintained. Is done. When the lower rocker fixing part 12 is rotated 90 ° from this state, the suction part 11 and the lower rocker fixing part 12 repel each other and are released from the closed state. Then, if the lower roll 1 is slid upward, the umbrella opens.

  FIG. 4 illustrates a specific rotation mechanism of the lower rocker fixing portion 12. In FIG. 4, the lower rocker fixing structure in the closed state is shown. The lower part fixing part 12 is formed on the upper surface of a resin molded body (lower part holding part) 33 that is wrapped around the lower part fixing part 12 in the same manner as the holding part 7 of the lower part 1 that is rotatably attached to the middle rod 2. A ring-shaped permanent magnet 32 is embedded. Further, the center rod 2 is provided with a protrusion or a flange around the outer periphery in a region where the lower gripping portion 33 is mounted, and this is used as a guide 34. A groove 35 for guiding the guide 34 is defined on the inner wall surface in contact with the middle rod 2 of the lower gripping portion 33. Accordingly, the lower rocker fixing portion 12 including the lower grip portion 33 and the permanent magnet 32 embedded in the lower grip portion 33 is rotated with respect to the middle rod 2 while being restricted from sliding up and down by the guide 34 accommodated in the groove 35. It becomes possible.

  Further, a rotation operation pause function may be provided so that the rotation operation can be temporarily stopped at the same angular intervals as the magnetic domain 24 when the lower holding part 33 is rotated with the lower grip 33. FIGS. 5A to 5D show an example of the rotation operation temporary stop mechanism. (A) and (B) are a side cross-sectional view of the lower center fixing part 12 having the rotation operation temporary stop function, respectively, and a plan cross-sectional view on the aa plane in the side cross-sectional view. (C) is a relational diagram between the rotation stop angle by the rotation mechanism and the magnetic domain 24 of the permanent magnet in the lower rocker fixing portion 12, and (D) is the magnetic domain 24 of the permanent magnet in the lower rocker fixing portion 12 and the adsorption. FIG. 6 is a relationship diagram with a magnetic domain 23 of a permanent magnet that becomes a portion 11. In this example, the tip guide formed on the outer periphery of the center rod 2 is a hemispherical protrusion 34b, and the protrusions 34b are provided at the same equiangular intervals as the magnetic domains. Further, at the bottom of the groove 35 at the tip of the inner wall of the lower gripping portion 33, a low base-like convex portion 35b having a concave portion 35a formed on the upper surface is provided at the same equiangular intervals as the magnetic domain 24. As a result, when the lower gripping portion 33 is rotated, the tip of the protrusion 34b of the middle rod 2 rides on the base 35b and falls into the concave portion 35a on the upper surface, and the rotation operation is temporarily stopped. In this stopped state, the magnetic domains 23 of the attracting part 11 and the magnetic domains 24 of the lower rocker fixing part 12 are made to correctly face each other (D). With this structure, the person who rotates the lower gripping part 33 recognizes that the lower rocker fixing part and the attracting part are different from each other, or the same poles are facing each other, by the feeling that the protrusion of the center rod falls into the recess 35a. Further, it is possible to prevent the lower umbrella fixing portion and the suction portion from facing each other at a halfway rotation angle and sucking them in an incomplete state, so that the umbrella in the closed state is not easily opened.

  Alternatively, in the lower gripping portion 33, when the rotation position where the lower rocker fixing portion 12 and the attracting portion 11 face each other with different polarities is set as the reference position, and the lower gripping portion 33 is rotated from the reference position, it automatically returns to the reference position. You may have the function to do. 6A and 6B are a side view and a plan view of an example of the return function. In this example, one end 36 a of a spring 36 wound around the center rod 2 is fixed to the center rod 2, and the other end 35 b is fixed to the lower end surface 33 a of the lower grip portion 33. The fixed state of the spring 36 is a state in which no stress is applied to the spring 36, and the other end 36 b of the spring 36 is brought into contact with the lower end surface 33 a of the lower holding portion 33 when the rotation position of the lower holding portion 33 is at the reference position. It is fixed. FIG. 7 shows the operation of the return mechanism. In an initial state (A) in which no stress is applied to the spring 36, the magnetic domain 24 of the permanent magnet 32 and the magnetic domain 23 of the attracting portion 11 of the lower rocker fixing portion 12 are opposite to each other, and both are attracted and closed. State is maintained. When rotating with the lower grip 33 from this state, the rotational position of the magnetic domain 24 changes while stress is applied to the spring 36. Then, when both magnetic domains are rotated until they face each other with the same polarity, the permanent magnet 32 and the attracting portion 11 of the lower roll fixing portion 12 are repelled and the closed state is released. When the hand holding the lower grip 33 is released, the spring 36 returns to a state where no stress is applied, and the lower grip returns to the reference position (C).

  Of course, as long as the lower lock fixing part 12 can smoothly rotate, the rotation operation pause function and the reference position return function may be omitted. That is, when the attracting part 11 approaches, the lower rocker fixing part 12 rotates spontaneously so as to be attracted by the magnetic force, and when the attracting part 11 abuts against the magnetic surface of the lower rocker fixing part 12, the different polarities are already present. It will be in a state where it can be adsorbed face to face.

=== Third embodiment ===
In the third embodiment of the lower rocker fixing structure of the present invention, an electromagnet is used for the lower rocker fixing part 12. However, if the attracting part 11 and the lower rocker fixing part 12 are attracted using an electromagnet when the umbrella is closed, the battery serving as the power source is quickly consumed. Therefore, in the third embodiment, the lower rocker fixing portion 12 is an electromagnet, the attracting portion 11 is a permanent magnet, and the electromagnet is operated only when the attracted state is released.

  FIG. 8 shows the concept of the lower center fixing structure according to the third embodiment. The surface 21 facing the lower rocking fixing part 12 of the attracting part 11 is magnetized to a predetermined pole (here, S pole), and the lower rocking fixing part 12 winds a conducting wire 38 around the magnetic core 37. This is a rotating electromagnet 38. The winding direction of the conducting wire 38 is such that when the electromagnet is actuated by energizing the conducting wire 38 from the power source 39, the opposing faces (21, 22) of the lower rocker fixing portion 12 and the attracting portion 11 are the same polarity (S pole). ) So that the current flows. Thereby, when the electromagnet is not operated (A), an attracting force is generated between the attracting part 11 and the magnetic core 37 of the lower rocker fixing part 12, and the lower rocker 1 is moved downward with respect to the center rod 2. When the lower surface 21 of the attracting part 11 is brought into contact with the upper end surface of the magnetic core 37 exposed on the upper surface 22 of the lower rocker fixing part 12, the attracting part 11 is attracted to the magnetic core 37 and closed. State is maintained. On the other hand, when the electromagnet is energized by energizing the conductive wire 38 (B), the attracting portion 11 and the lower rocker fixing portion 12 face each other with the same polarity, and change to repulsive force. , It will be lifted. In addition, what is necessary is just to store the battery used as the power supply 39 by providing a battery box in the handle 30, for example. And as for the wiring between the power source 39 and the electromagnet, a hole is drilled from the predetermined position through the inside of the middle bar 2 and guided to the outside, and both are connected.

=== Other Embodiments ===
In each said Example, the adsorption | suction part and the lower rocker fixing | fixed part adsorb | sucked surfaces by magnetic force. The shape is not limited to these examples, and may be shapes that fit each other. For example, as shown in FIG. 9, the magnetic body in the lower rocker fixing portion 11 is a cylindrical magnet 32a, and the attracting portion 11 is formed of a hollow cylindrical non-magnetized magnetic body into which the cylindrical magnet 32a is inserted. May be. As a result, an attractive force is also exerted between the side surface of the cylindrical magnet 32a and the cylindrical inner wall surface of the attracting part 11, and the attracting part 11 and the lower rocker fixing part 12 can be more firmly adsorbed when the umbrella is closed. it can.

It is a principal part perspective view when the umbrella which employ | adopted the lower rokuro fixing structure in the 1st Example of this invention is in an open state. It is the schematic of the lower rokuro fixing structure in the said 1st Example. It is the schematic of the lower rokuro fixing structure in the 2nd Example of this invention. It is the schematic which shows an example of the rotation mechanism of the lower roller fixing | fixed part in the said 2nd Example. As a modification of the second embodiment, it is a schematic view showing an example in which the rotation mechanism is provided with a rotation operation pause function. As a modification of the second embodiment, it is a schematic view showing an example in which the rotation mechanism is provided with a reference position return function. It is operation | movement explanatory drawing of a reference position return function to the said rotation mechanism. It is the schematic of the lower rokuro fixing structure in the 3rd Example of this invention. It is the schematic of the lower rokuro fixing structure in the other Example of this invention. It is a principal part perspective view of the umbrella which employ | adopted the conventional lower rokuro fixing structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower roll 2 Middle stick 3 Parent bone 4 Receiving bone 5 Upper roll 11 Adsorption part 12 Lower roll fixing part 30 Handle 40 Umbrella cloth

Claims (3)

A structure for fixing the lower lokuro, which is provided with a pivotal support portion of the receiving bone and is slidably guided to the middle rod, to maintain the closed state under the middle rod,
And a suction portion and a lower runner fixing portion was found disposed below the lower runner being secured to the central shaft at the lower runner underside of position when closing the umbrella,
The suction portion and the lower runner fixing unit is capable of switching between the adsorption and repulsion by the magnetic force, by sliding the runner downwardly, and the lower runner fixed portion the when the suction unit Ru is adsorbed closed It is fixed in an umbrella state, and when it is repelled by magnetic force, the fixation is released,
The lower rocker fixing portion is a permanent magnet having an upper surface facing the attracting portion formed in a ring shape, and is rotatable about the center of the ring, and the upper surface is radially formed of N and S poles. Divided into multiple magnetic domains,
The attracting part is a permanent magnet formed in a ring shape whose lower surface facing the lower rocker fixing part matches the upper surface shape of the lower rocker fixing part, and is not rotatable about the center of the ring. It is divided into a plurality of magnetic domains of N pole and S pole so as to substantially coincide with the division shape of the magnetic domain in the fixed portion of the rock,
By rotating the lower lokuro fixing part, switching between adsorption and repulsion between the upper surface of the lower rokuro fixing part and the adsorption part,
The lower rokuro fixing structure in the umbrella characterized by the above. The lower rocker fixing portion according to claim 1 , wherein the rotation angle is limited to a predetermined angle that divides the magnetic domain, and is biased so as to return to the reference position with the rotation position in the adsorption state as the reference position. A structure for fixing the lower rocking in an umbrella, wherein the suction force is switched to a repulsive force when rotated by a predetermined angle from the state of being sucked by the suction portion. A structure for fixing the lower lokuro, which is provided with a pivotal support portion of the receiving bone and is slidably guided to the middle rod, to maintain the closed state under the middle rod,
A lower rocker fixing portion that is fixed to the middle rod at the position of the lower surface of the lower rocker when the umbrella is closed, and a suction portion provided below the lower rocker,
The lower rocker fixing part and the adsorption part can be switched between adsorption and repulsion by magnetic force. If the lower rocker fixing part and the adsorption part are adsorbed by sliding the lower rocker downward, an umbrella is closed. Fixed to the state, and when repelled by magnetic force, the fixation is released,
The suction unit is a permanent magnet lower surface facing said lower runner fixing portion is magnetized in a predetermined magnetic pole,
The lower runner fixing unit is an electromagnet formed by winding a coil hollow cylindrical magnetic core which is retrofit in said rod,
The attracting part and the magnetic core can be attracted by magnetic force when the electromagnet is not excited,
When the electromagnet is energized by a power supply that comes with an umbrella, a cylindrical top surface facing said suction portion in the magnetic core, and a lower surface of the suction unit the same pole,
The lower rokuro fixing structure in the umbrella characterized by the above.

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