JPS6125375Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the fixing structure of the stone butt in the umbrella.
The stone stud can be easily and reliably fixed to the upper wheel.

For example, as shown in FIG. 1, the conventional fixing structure of a stone abutment is such that a screw hole 2 is provided in the center of an upper wheel 1 in the vertical direction, a screw shaft 4 is provided in the center of a stone abutment 3 and protrudes downward, and this By screwing the screw shaft 4 into the screw hole 2, the stone stud 3 is fixed to the upper wheel 1, and the center portion of the umbrella cloth 5 is held between the upper wheel 1 and the stone stud 3. However, in this case, in order to fix the stud 3, the screw shaft 4 must be screwed into the screw hole 2 by rotating the stud 3 multiple times, and the work of fixing the stud 3 is very difficult. It was a hassle. In addition, when used for a long period of time, the threading of the screw shaft 4 gradually loosens, and the holding of the umbrella cloth 5 becomes weak, or the stone tab 3 comes off from the upper wheel 1 and is lost. I was afraid.

The present invention solves the above-mentioned problems, and its feature is that the center part of the umbrella cloth 18 is held between the upper wheel 7 and the stone stud 12 fixed to the upper wheel 7. In the umbrella, a prismatic fitting part 15 is provided in the center of the stone stud 12 to protrude downward, a shaft part 13 thinner than the fitting part 15 is provided in the center of the fitting part 15 to protrude downward, and the upper wheel A prismatic anti-rotation recess 10 into which the fitting portion 15 is unrotatably fitted is provided at the center of the upper end of 7, and an insertion hole 9 into which the shaft 13 is inserted is narrower than the anti-rotation recess 10. A retainer is provided in the vertical direction so as to communicate with the center of the lower end of the retaining recess 10, is movable in the radial direction at the lower end of the shaft portion 13, and protrudes outward so as to engage with the lower end of the insertion hole 9 from below. A clamping part 16 for clamping the umbrella cloth 18 between the stone tabs 12 and the stone tabs 12 is provided on the outer peripheral edge of the stone tab 12 and protrudes downward toward the upper surface of the upper wheel 7. A plurality of annular projections and recesses 21 are provided on the lower surface of the clamping portion 16 so as to form a wave shape toward the center of the abutment 12.

Hereinafter, the present invention will be explained according to the illustrated embodiment. In FIGS. 2 to 5, 6 is a center rod, and 7 is an upper wheel, which is fixed to the upper end of the center rod 6 through a pin 8. . A circular insertion hole 9 is formed in the center of the upper wheel 7 in the vertical direction, and an annular protrusion is formed at the center of the upper end of the upper wheel 7 to form a rectangular anti-rotation recess 10 that is continuous with the insertion hole 9. 11 is provided to protrude upward. A tapered surface 9a is formed on the upper edge of the insertion hole 9 so as to gradually widen toward the recess 10. Numeral 12 is a stone stud fixed to the upper wheel.A pair of shaft parts 13 to be inserted into the insertion holes 9 are provided in the center of the stone projection 12 to protrude downward, and an insertion hole is provided at the lower end of each shaft part 13. A retaining portion 14 is provided that protrudes radially outward from the shaft portion 9, and a rectangular fitting portion 15 is provided at the upper end of the shaft portion 13 and is non-rotatably fitted into the recess 10. Each of the retaining portions 14 is movable in the radial direction so as to fit into the insertion hole 9 by elastic deformation of the shaft portion 13, and is engaged with the lower end edge of the insertion hole 9 from below. In the outer view of each of the retaining portions 14, the lower side is a tapered surface 14a that slopes inward in the radial direction. An annular clamping portion 16 is provided on the outer periphery of the stone abutment 12 to protrude downward. Reference numeral 17 denotes ribs arranged radially around the fixed potter's wheel 7, and each base end of which is pivoted to the fixed potter's wheel 7 so as to be vertically swingable. Reference numeral 18 denotes an umbrella cloth stretched over the main rib 17, etc., whose center part is inserted into the protrusion 11 through the opening hole 19, and between the outer periphery of the upper wheel 7 and the clamping part 16 of the stone stud 12. being held in place. 20 is stone thrust 1
This is a protective cloth interposed between 2 and the umbrella cloth 18.

As shown in FIGS. 6 and 7, an unevenness 21 is provided on the lower surface of the clamping part 16 of the stone butt 12, and these irregularities 21 allow the umbrella cloth 18 to be removed or rotated between the clamping part 16 and the upper wheel 7. It is designed to be firmly clamped so that it does not move.

According to the configuration of the above embodiment, in order to define the ferrule 12 of the upper wheel 7, it is sufficient to insert the shaft portion 13 from the recess 10 into the insertion hole 9, and to fit the fitting portion 15 into the recess 10. At this time, the shaft portions 13 are elastically deformed inward in the radial direction so as to approach each other as shown by the two-dot chain line in FIG. , so that the shaft portion 13 can be smoothly inserted into the insertion hole 9, and the ferrule 12 can be fixed very easily. After fixing, the retaining part 14 protrudes radially outward due to the elastic force of the shaft part 13 and engages with the lower edge of the insertion hole 9 from below, so that the shaft part 13 does not come out upward from the insertion hole 9. Since the fitting part 15 fits into the recess 10 and the ferrule 12 becomes unrotatable, there is no risk of the ferrule 12 becoming unfixed or loosening even after long-term use.

In the above embodiment, the semi-cylindrical shaft portion 13 is
However, instead of this, the shaft portion 13 is formed into a cylindrical shape as shown in FIGS.
It is also possible to provide two. Further, the recess 10 and the fitting part 15 may have a triangular or other polygonal shape, and in short, any shape is sufficient as long as they can be fitted together without relative rotation.

As described above, according to the present invention, the stone stud 12 can be fixed to the upper wheel 7 very easily. Moreover, after fixing, the retaining part 4 protrudes outward so as to engage with the lower edge of the insertion hole 9 from below, so that the shaft part 13 of the stone tip 12 is securely prevented from being removed from the insertion hole 19 of the upper wheel 7. Also, the fitting part 15 is in the anti-rotation recess 1
0 so that it cannot rotate, it is possible to reliably prevent the stone butt 12 from rotating relative to the upper wheel 7, and there is no risk that the fixation of the stone butt 12 will loosen or come off even if used for a long period of time. , the umbrella cloth 18 can be strongly held for a long period of time, and the loss of the pegs 12 can be reliably prevented.

In addition, a prismatic fitting part 15 is provided in the center of the stone butt 12 to protrude downward, and a shaft part 13 that is thinner than the fitting part 15 is provided in the center of the fitting part 15 to protrude downward. Since there is a prismatic fitting part 15 right next to the center of the butt 12, the butt 12 can be reliably stopped from rotating by fitting one fitting part 15 into the anti-rotation recess 10. Even if a strong rotational force about the vertical axis is applied to the shaft 12, there is no risk of the shaft portion 13 being screwed off. In addition, since it is only necessary to provide one fitting part 15, even if the protrusion 12 is small, a relatively large fitting part 15 can be easily provided, and the protrusion 15 can be easily provided.
2 to the upper raceway 7, the fitting part 15 and the anti-rotation recess 10 should have a corresponding prismatic shape, and the protruding position of the fitting part 15 and the anti-rotation recess 10 need to be in a corresponding prismatic shape. Precision is not required between the 10 protruding positions and manufacturing is simple.

Furthermore, since a plurality of annular irregularities 21 are provided on the lower surface of the holding part 16 for holding the umbrella cloth 18 between the stone tabs 12 so as to form a wave shape toward the center of the stone tabs 12, The umbrella cloth 18 can be firmly clamped between the clamping part 16 of the stone stud 12 and the upper wheel 7 to prevent it from coming off or rotating.
The unevenness 21 allows multiple seals to be formed between the stone abutment 12 and the upper wheel 7, allowing rainwater to flow through the umbrella cloth 18.
It can be reliably prevented from entering from between the stone spigot 12 and the upper wheel 7.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a conventional example, Fig. 2 is a side sectional view showing an embodiment of the present invention, Fig. 3 is a bottom view of the same, Fig. 4 is a plan view of the same potter's wheel, and Fig. 5 is a side sectional view showing an embodiment of the present invention. Figure 6 is an enlarged side sectional view of the stone butt part, Figure 7 is an enlarged bottom view of the stone butt part, and Figure 8 is a bottom view of the stone butt part.
The figure is a side sectional view showing another embodiment, and FIG. 9 is a bottom view of the same abutment. 7... Upper wheel, 9... Insertion hole, 10... Recess for rotation stopper, 12... Stone butt, 13... Shaft, 1
4... Removal prevention part, 15... Fitting part, 18... Umbrella cloth.

Claims (1)

[Scope of utility model registration request] In the umbrella in which the center part of the umbrella cloth 18 is held between the upper wheel 7 and the stone tab 12 fixed to the upper wheel 7, a prismatic fitting part 15 is provided at the center of the stone tab 12. A square column that projects downward, has a shaft portion 13 thinner than the fitting portion 15 projecting downward from the center of the fitting portion 15, and the fitting portion 15 is unrotatably fitted to the center of the upper end of the upper wheel 7. Shaped anti-rotation recess 1
0 is provided, and the insertion hole 9 into which the shaft portion 13 is inserted is narrower than the anti-rotation recess 10 and is provided in the vertical direction so as to communicate with the center of the lower end of the anti-rotation recess 10. A retaining part 14 is provided that can freely move in and out of the insertion hole 9 and protrudes outward so as to engage with the lower end of the insertion hole 9 from below. A clamping part 16 for clamping is protruded downward toward the outer periphery of the upper surface of the upper wheel 7, and a plurality of annular irregularities 21 are formed on the lower surface of the clamping part 16 so as to form a wave shape toward the center of the stone tip 12. A fixed structure of stone studs in an umbrella, characterized by the fact that each stone is individually provided.