JP3860816B2 - Western umbrella - Google Patents

Description

  The present invention relates to a western umbrella, and more particularly, to a western umbrella having a strong frame structure and capable of suitably absorbing stress generated when a parent bone swings.

  In the conventional hand-opened umbrella, the upper rocker is fixed to the upper end of the middle rod, the sliding rocker is extrapolated slidably on the middle rod below the upper rocker, and the base end of the main bone is pivotally attached to the upper rocker. In addition, the base end portion of the receiving bone is pivotally attached to the sliding rocker, and the distal end portion is pivotally connected to the middle portion of the parent bone, and an umbrella cloth is stretched around the parent bone.

  Such a hand-opened Western umbrella generates a strong tension in the umbrella cloth when the umbrella is opened, but the strength is not always sufficient because the framework structure that holds the opened umbrella state is composed of only two types of bones, the parent bone and the receiving bone. Absent. In particular, when the ribs are formed of a flexible synthetic resin, when the umbrella cloth is struck by strong wind from above, the ribs are easily deformed, and the parent bone cannot be firmly supported. There is a risk of damaging the pivotal part of the bone.

  On the other hand, as shown in FIGS. 8 and 9, in the conventional automatic opening western umbrella, the upper rocker 2 is fixed to the upper end portion of the middle rod 1, and the middle rod 1 is slidable below the upper rocker 2. The center part 4 and the bottom part 5 are provided on the sliding part 3 which is extrapolated to the upper part, and the base part of the main bone 6 is pivotally attached to the upper part 2, and the base part of the receiving bone 7 is While pivotally attached to the middle rock 4, the distal end is pivotally attached to a bracket 8 provided in the middle of the main bone 6, and the proximal end of the support 9 is pivoted to the lower roll 5, and the distal end is It is pivotally connected via a pin 10 to the midway part of the rib 7. An umbrella cloth is stretched around the main bone 6.

  The center and bottom rolls 4 and 5 constituting the sliding roll 3 are formed by separate members, and are combined so as to be movable toward and away from each other. A spring 11 for biasing the rockers 5 in the direction away from each other is interposed. Therefore, when the sliding roll 3 is pulled down along the center rod 1 and the repelling is unlocked by pushing the push button from the closed state where it is locked to the repelling (not shown), When the rocker 5 is moved in the separating direction, the receiving bone 7 and the supporting bone 9 are opened. As a result, the sliding roll 3 automatically rises along the middle rod 1, and the main bone 6 automatically opens the umbrella as the sliding roll 3 rises.

  In this way, the automatically opening western umbrella is composed of the middle rocker 4 and the lower rocker 5 that are urged in the direction away from each other by the spring 11, and by providing the support frame 9 in addition to the receiving bone 7, Although the purpose is to open the umbrella, as a result of providing the support frame 9, the frame structure becomes stronger than the above-mentioned hand-opened western umbrella. That is, when the umbrella cloth is crushed by receiving a strong wind from above in the opened state, the main bone 6 is supported by the receiving bone 7 and further, the receiving bone 7 is supported by the fulcrum 9, so there are three types of stress. Dispersed in the bones of each frame to prevent breakage of each pivot in the frame structure.

However, when the strong wind acting from above the umbrella fabric is extremely strong, there is a problem that the rib 7 cannot be deformed suitably and the stress cannot be absorbed. That is, since the rib 7 that has received the pressing force of the parent bone 6 is stretched from the lower part by the support 9 from the lower side, it is difficult to absorb the stress, and as a result, the support 7 or the support 9 is broken. Or the pivotal portion of the bracket 8 is easily damaged. The literature shown below shows the framework structure of such an automatic opening western umbrella.
JP-A-8-70919 JP-A-8-266321

  SUMMARY OF THE INVENTION An object of the present invention is to provide a western umbrella that eliminates the disadvantages found in hand-opened and automatically opened western umbrellas.

  Therefore, the present invention is configured as a means, in which the upper rocker is fixed to the upper end portion of the middle bar, and is arranged vertically on the sliding rocker slidably inserted on the middle bar below the upper rocker. The center and bottom rolls are provided.The base end of the main bone is pivoted to the upper roll, the base end of the receiving bone is pivoted to the middle roll, and the tip is pivoted to the middle part of the main bone. In a western umbrella that has the base end of the bone pivoted to the lower rocker and the tip is pivoted to the middle of the receiving bone, the distal end of the support is pivotally connected to the middle of the receiving bone via a slider. The slider is extrapolated slidably along the axis of the rib.

  According to the present invention, the main bone is supported by the ribs, and further, the ribs are supported by the support bones. Therefore, the frame structure of the umbrella is strong and can withstand strong winds suitably. Can do.

  In particular, according to the present invention, the support bone is pivotally connected to the rib by the slider, so that the main bone is beaten by the strong wind together with the umbrella cloth, and the slider is bent and deformed to absorb stress while being deformed. By making the slidable along the ribs, the pivot point of the fulcrum that supports the fulcrum from below is moved, so that stress can be suitably distributed to the vertebrae and the fulcrum. It is possible to prevent the fracture of the receiving bone and / or the supporting bone and the damage to the pivotal portion of the frame structure.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
1 to 3 show a hand-opened umbrella according to a first embodiment of the present invention. An upper rocker 22 is fixed to the upper end portion of the center rod 21, and a slide roller 23 slidable on the center rod 21 is extrapolated below the upper roller 22, and the slide roller 23 is arranged vertically. The middle roll 24 and the lower roll 25 are provided. The middle roll 24 and the lower roll 25 are integrally molded with a synthetic resin or the like, or are formed separately with an adhesive or the like, and the vertical distance L1 is fixed.

  The main bone 26 is formed of a flexible round bar material by extrusion or drawing of a synthetic resin reinforced with fibers such as glass fiber or carbon fiber. I wear it. Similarly, the receiving bone 27 is formed of a flexible round bar material by extrusion or drawing of a synthetic resin reinforced with fibers such as glass fiber or carbon fiber. The pivot support 27b at the tip is pivotally attached to a bracket 28 provided in the middle of the main bone 26. Further, a support frame 29 formed of a steel wire or the like is provided, and a base end portion of the support frame 29 is pivotally attached to the lower rocker 25, and a distal end portion of the support frame 27 is interposed in the middle of the support frame 27 via the slider 30. It is pivoted to. Although not shown, an umbrella cloth is stretched around the main bone 26.

  In the case of the illustrated example, as shown in FIG. 2, the support frame 29 constitutes two parallel bone portions 29 a and 29 a that are folded back at the tip, and the folded portion at the tip is rotated to the insertion portion 30 a of the slider 30. Although it is freely inserted, it is not limited to such a configuration.

  As shown in FIG. 1, the slider 30 is slidable in the forward direction F and the backward direction R with respect to the distal direction of the rib 27 and has a predetermined length that can hold a predetermined region in the axial direction of the rib 27. It is formed by the cylindrical body.

  In order to close the western umbrella from the opened state, it is only necessary to lower the sliding rocker 23 along the center rod 21. By rotating the inner angle formed by the receiving bone 27 and the main bone 26, the main bone 26 is rotated downward. Close the umbrella while moving it. At this time, as shown in FIGS. 3 (A) and 3 (B), the receiving bone 27 and the support frame 29 overlap while sliding the slider 30 in the backward direction R, thereby enabling the frame to be closed. In the illustrated embodiment, the configuration in which the slider 30 is brought into contact with the pivotal support 27a in the closed state is shown, but it may not be brought into contact.

  On the other hand, in order to open the western umbrella from the closed state, it is only necessary to raise the sliding roll 23 along the middle rod 21. At this time, the slider 30 slides in the forward direction F, so that the rib 27 Then, the support bone 29 is expanded, and the parent bone 26 is expanded by raising the receiving bone 27. After the opening of the umbrella, as shown in FIG. 2, the sliding roll 23 is locked by a repellant 33 provided on the intermediate rod 21, and the lowering is prevented to keep the opened state.

  According to the western umbrella according to the first embodiment, as shown in FIG. 1, when the umbrella cloth is struck by a strong wind in the opened state, the parent bone 26 is supported by the receiving bone 27, and further, the receiving bone 27 Is supported by the fulcrum 29, the stress is distributed to the three kinds of bones, and the breakage of each pivot in the frame structure is prevented. That is, for the load P received by the main bone 26 by the strong wind from above, the receiving bone 27 absorbs the stress through deformation by the flexible resin. Therefore, the load P is distributed not only to the receiving bone 27 but also to the fulcrum 29. Accordingly, the strength of the frame is significantly improved as compared with two types of frame structures such as a conventional hand-opened umbrella.

  By the way, when the strong wind acting from above the umbrella cloth is extremely strong, the load P increases and the receiving bone 27 is greatly curved and deformed. Therefore, since the receiving bone 27 is curved, the slider 30 is prevented from sliding smoothly. However, as shown in FIG. 1C, as a result of the pivot portion of the main bone 26 and the receiving bone 27 moving downward, the slider 30 Moves in the forward direction F while generating frictional resistance against the curved receiving bone 27. For this reason, since the fulcrum of the supporting frame 29 with respect to the receiving bone 27 is moved, the load P can be suitably distributed to the receiving bone 27 and the supporting frame 29. That is, the receiving bone 27 is not stretched by the fulcrum 29 unlike the conventional automatic opening western umbrella and absorbs the stress suitably, so that the receiving bone 27 or the supporting frame 29 is broken or the bracket 28 is pivoted. Damage is preferably prevented.

  When the umbrella cloth is struck by a strong wind from below and the main bone 26 rotates upward, the slider 29 moves backward while supporting the rib 27 as shown in FIG. 1B. It is moved in the direction R, and the stress is absorbed by the cooperation of the support frame 29 and the support bone 27.

(Second Embodiment)
4 to 7 show an automatic opening western umbrella according to a second embodiment of the present invention. An upper rocker 32 is fixed to an upper end portion of the middle bar 31, and a sliding rocker 33 slidable on the middle bar 31 is extrapolated below the upper rocker 32. The sliding roll 33 is configured by combining the middle roll 34 and the lower roll 35 formed by separate members so as to be movable in the approaching direction and the separation direction. The middle roll 34 and the lower roll 35 are combined. A spring 41 that biases them away from each other is interposed. Accordingly, the vertical distance L2 between the middle and lower rolls 34 and 35 is variable via the spring 41.

  The main bone 36 is formed of a flexible round bar by extrusion or drawing of a synthetic resin reinforced with fibers such as glass fiber or carbon fiber, and the pivotal support 36 a at the base end is pivoted to the upper rocker 32. I wear it. Similarly, the receiving bone 37 is formed of a flexible round bar material by extrusion or drawing of a synthetic resin reinforced with fibers such as glass fiber or carbon fiber. 34, and a pivot support 37b at the tip is pivotally attached to a bracket 38 provided in the middle of the main bone 36. Further, a support frame 39 formed of a steel wire or the like is provided. A base end portion of the support frame 39 is pivotally attached to the lower rocker 35, and a distal end portion of the support frame 37 is interposed through the slider 40. It is pivoted to. Although not shown, an umbrella cloth is stretched around the main bone 36.

  In the case of the illustrated example, as shown in FIG. 3, the support 39 constitutes two parallel bone portions 39 a and 39 a that are folded back at the tip, and the folded portion at the tip is rotated to the insertion portion 40 a of the slider 40. Although it is freely inserted, it is not limited to such a configuration.

  As shown in FIG. 4, in the opened state, the slider 40 is in contact with the pivotal support 37 a of the receiving bone 37, and is thus slidable in the forward direction F that is the distal direction of the receiving bone 37. The cylindrical body is formed with a predetermined length capable of holding a predetermined region in the axial direction of the ribs 37.

  In order to close the western umbrella from the opened state, it is only necessary to lower the sliding rocker 33 along the middle rod 31. By rotating the inner angle formed by the receiving bone 37 and the main bone 36, the main bone 36 is rotated downward. Close the umbrella while moving it. At this time, as shown in FIGS. 7A and 7B, the vertical distance L2 between the middle and lower rolls 34 and 35 gradually decreases, so that the slider 40 remains in contact with the pivotal support 37a of the receiving bone 37. Thus, the receiving bone 37 and the support frame 39 overlap each other, thereby enabling the frame to be closed. The sliding roll 33 is locked to a repellent (not shown) provided on the proximal side of the middle bar 31 at the closed position.

  On the contrary, in order to open the western umbrella from the closed state, the spring 41 is released when the repelling lock is released by pressing the push button from the state in which the sliding rocker 33 is locked to the repelling on the hand side of the center rod 31. As a result, the middle roll 34 and the lower roll 35 are moved away from each other, thereby opening the receiving bone 37 and the support frame 39. As a result, the sliding rocker 33 automatically rises along the middle rod 31, and when the receiving bone 37 rises, the main bone 36 is expanded and the umbrella is automatically opened. In the opened state, the sliding rocker 33 stops by contacting the upper stopper 42.

  According to the western umbrella according to the second embodiment, as shown in FIG. 1, when the umbrella cloth is crushed by strong wind from above in the opened state, the main bone 36 is supported by the receiving bone 37, and further, Since the bone 37 is supported by the fulcrum 39, the stress is distributed to the three kinds of bones, and the breakage of each pivot in the frame structure is prevented. In other words, the receiving bone 37 absorbs stress through the deformation of the receiving bone 37 itself by the flexible resin with respect to the load P received from the upper side received by the parent bone 36. Since it is supported by the support 39, the load P is distributed not only to the receiving bone 37 but also to the support 39.

  By the way, when the strong wind acting from above the umbrella cloth is extremely strong, the load P increases, and the receiving bone 37 is greatly curved and deformed. Therefore, since the receiving bone 37 is curved, smooth sliding of the slider 40 is hindered. However, as shown in FIG. 6, the slider 40 is bent as a result of the pivot portion of the main bone 36 and the receiving bone 37 moving downward. It moves in the forward direction F while generating frictional resistance with respect to the ribs 37. For this reason, since the fulcrum of the support frame 39 with respect to the support bone 37 is moved, the load P can be suitably distributed to the support bone 37 and the support frame 39. That is, the receiving bone 37 is not stretched by the fulcrum 39 unlike the conventional automatic opening western umbrella and absorbs the stress suitably, so that the receiving frame 37 or the fulcrum 39 is broken or the bracket 38 is pivoted. Damage is preferably prevented.

  When the umbrella cloth is struck by a strong wind from below and the main bone 36 tries to rotate upward, the slider 40 is in contact with the pivotal support 37a, so that it does not slide backward, but the spring 41 Since the upper roll 34 can be moved downward, the stress is absorbed by the cooperation of the support frame 39 and the support bone 37.

1 shows a hand-opened umbrella according to a first embodiment of the present invention, (A) is a partially sectional front view showing a framework structure, (B) is a partial sectional view showing a sliding action of a slider in a backward direction, (C ) Is a partial sectional view showing the sliding action of the slider in the forward direction. 1 is a perspective view showing a first embodiment of the present invention. The closed state of 1st Embodiment of this invention is shown, (A) is a partial cross section front view which shows the state in the middle of an umbrella, (B) is a fragmentary sectional view which shows a closed state. It is a partial cross section front view which shows the frame structure of the automatic opening western umbrella which concerns on 2nd Embodiment of this invention. It is a perspective view which shows 2nd Embodiment of this invention. It is a partial cross section front view which shows the effect | action of 2nd Embodiment of this invention. The closed state of 2nd Embodiment of this invention is shown, (A) is a partial cross section front view which shows the state in the middle of closing, (B) is a fragmentary sectional view which shows a closed state. It is a partial cross section front view which shows the frame structure of the automatic opening western umbrella which concerns on a prior art example. It is a perspective view which shows the automatic opening western umbrella which concerns on a prior art example.

Explanation of symbols

21, 31 Middle rod 22, 32 Upper roll 23, 33 Sliding roll 24, 34 Middle roll 25, 35 Lower roll 26, 36 Master bone 27, 37 Receiving bone 29, 39 Spine 30, 40 Slider

Claims (1)

The upper rocker (22) (32) is fixed to the upper end of the middle rod (21) (31), and the sliding rocker (23) (33) is slidably inserted into the middle rod below the upper rocker. The upper and lower crocodiles (24) and (34) and the lower crocodile (25) and (35) are provided on the top and bottom of the main bone (26) and (36). The proximal end of the bone-receiving (27) (37) is pivotally attached to the center loft (24) (34) and the distal end is pivotally connected to the middle part of the parent bone (26) (36). 29) In a western umbrella with the proximal end of (39) pivoted to the lower rocker (25) (35) and the distal end pivoted to the midway of the rib (27) (37),
The distal ends of the supporting bones (29) and (39) are pivotally connected to the midway of the ribs (27) and (37) via the sliders (30) and (40), and the sliders (30) and (40) are received. A western umbrella characterized by being slidably fitted along the axis of the bones (27) and (37).

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