JPS59103011A - Screw - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bolt, a nut, or a screw formed in a bottle neck, a bottle cap, etc.

Conventionally, this type of screw has been widely used for tightening or moving mechanical parts, closing bottle mouths, etc. However, these screws have the following drawbacks.

This is a common experience when tightening mechanical parts using bolts and nuts, for example, but the amount of rotation of the nut from the start of the tightening process until the tightening limit is reached is very small. This is a small matter. Therefore, a large amount of force must be applied to tighten to the limit within such a small amount of rotation. Conversely, a large amount of force must be used to loosen the screw. Furthermore, if it rotates a small amount due to vibration or the like, the tightening will loosen.

The present invention was made to solve this problem, and its purpose is to enable tightening with a relatively smaller force than the conventional screws.

To provide a screw that can be loosened and that does not loosen more easily than conventional screws due to vibration or the like.

To describe the present invention with reference to the drawings showing embodiments of the invention, FIGS. 1 to 6 show a pair of male threads 1. and in the female thread 2, at least one of the side threads 1.2 is formed of a flexible body, and at least one of the threads 3 has a convex portion 4f projecting in the pitch direction: This is a screw characterized by the fact that

Note that 6 in the figure indicates a protrusion on the bottle opening 7. The flexible body is made of synthetic resin, rubber, wood, metal, etc. - As an example, the bottle cap 8a shown in FIG. 2 is made of synthetic resin.

Alternatively, the bottle cap 8b shown in FIG. 3 may be made of metal such as aluminum. By forming the thread 3 in an uneven shape like this bottle cap 8b, the thread 3 exhibits good flexibility. The bottle opening 7 shown in FIG. 1 is made of glass, synthetic resin, or the like.

In addition, in the case shown in FIGS. 1 and 2, a screw 1 is formed on the bottle opening 7 of the bottle, and a female thread 2 is formed on the bottle cap 8α that fits into the bottle opening 7. This also applies to the bolts 9 and nuts 10, as shown in FIGS. 5 and 6. The nut 10 shown in FIG. 6 is made of synthetic resin, as an example. Further, the bolt 9 is made of metal or synthetic resin.

Next, the convex portion 4 is formed as shown in FIGS. 7 to 14.
It may be formed into various suitable shapes or configurations. The one shown in Fig. 7 has the protrusions 4 formed in a wavy shape, the one shown in Fig. 8 has an almost continuous mountain shape, and the one shown in Fig. 9 has an almost continuous trapezoid 4 shape. It was formed.

Further, as shown in FIGS. 10 to 14, a convex portion 4 may be provided to protrude in the pitch direction of the thread 3.

The one shown in FIG. 10 is provided with a substantially arcuate convex portion 4. Although not shown, it may be formed into an elliptical arc shape. The convex portion 4 shown in FIG. 11 has a sharp tip, and the convex portion 4 shown in FIG. 12 has a trapezoidal shape from the front. Further, as shown in FIGS. 13 and 14, the convex portion 4 may be provided in one direction of the pitch of both the male thread 1 and the female thread 2, and in the same direction.

Further, the convex portion 4 has a male thread 1, as shown in FIGS. 15 and 16. It may be formed on both sides of the female thread 2 and in both pitch directions. In this case, both 1 and 2 are preferably formed of flexible bodies.

Furthermore, in the case where the protrusions 4 are formed on both 1 and 2 as described above, the distance between the protrusions 4 is the same as that between the male thread 1 and the female thread 2.
do not need to be formed identically, and may be different as shown in FIGS. 18 and 19.

Next, each screw formed as described above has its female thread 2
Fit it onto the male screw 1 and turn it to screw it together. Then,
In the case of a screw thread 3 having a convex portion 4 in the pitch direction that engages with a normal thread 3 as shown in FIGS. 1 and 2, the screw thread 3 is engaged as shown in FIG. At the beginning of the tightening process, the convex portion 4 comes into contact with the normal screw thread 3 and is pressurized in the pinch direction, thereby bending the flexible screw thread 3. This deflection is the same even when using the screw thread 3 shown in FIGS. 8 and 9, and as shown in FIGS. 7 to 9.

Although the amount of deflection is smaller than that in which the convex portion 4 is formed by bending the thread 3, as shown in FIGS. 10 to 14,
By using a normal screw thread with convex portions 4 in the pitch direction, and on the threads 3 of the male thread 1 and female thread 2 as shown in FIGS. 18 and 19, Even in the case where the convex portion 4 is formed, the l=T flexible body screw thread 3 similarly bends. Therefore, in the screw of the present invention, the thread 3 of the protrusion 4 or the other thread 3 facing the protrusion 4 is deflected at the beginning of the tightening process, and the tightening process is prolonged by the deflection. become longer. The tightening process is therefore longer than with the conventional screw, and therefore the tightening can be carried out with less force than with the conventional screw. Also, when loosening the screw, it can be done with less force than with conventional screws. Moreover, the screw thread 3 which has been deflected and deformed is in pressure contact with other thread threads 3 due to the return of the deflection, so even if the screw rotates a small amount due to vibration etc., it will immediately loosen. can be prevented.

[Brief explanation of the drawing]

1 and 2 show an embodiment of this invention, and FIG. A sectional view of the bottle lid, Figure 4 is a schematic view of the bottle opening shown in Figures 1 and 2, a schematic diagram of the bottle lid when it is fitted,
The figure shows a third embodiment of the invention, including a sectional view of a bolt,
Figure 6 is a cross-sectional view of the nut that pairs with the bolt, Figures 7-
FIG. 12 shows fourth to ninth embodiments of the present invention, and is a partial view showing various convex portions formed on the thread, respectively;
Fig. 13 shows the 10th embodiment, and is an explanatory diagram when a convex portion is provided on both the female thread and the male thread, or only in one direction of the pitch, and Fig. 14 shows the 11th embodiment. Show 13th
A diagram corresponding to FIG. 13 in which the shape of the convex portion is different from the figure, FIG. 15 shows the twelfth embodiment of the same, and a partial view of the bottle mouth, and FIG. A sectional view of the lid, Fig. 17 is a schematic diagram of the lid when it is fitted to the mouth of the bottle, Fig. 18 is a partial view of the bolt showing the 13th embodiment, and Fig. 19 is a schematic diagram of the lid fitted to the bottle mouth. FIG. 1...Male thread 2...Female thread 3...Thread 4...Protrusion 8 2 Figure 4 11i1
61 Figure 7 Figure 10 Figure 8 Figure 11 @Figure 9 Figure 12 Figure 13 Figure 14 Figure 1゜

Claims (1)

[Claims] In a pair of male threads (1) and female threads (2), at least one of the side threads (1) and (2) is formed from a flexible body, and at least one of the side threads (1) and (2) is made of a flexible material. A screw characterized in that a convex portion (4) is formed on the ridge (3) and protrudes in the pitch direction.