Nut and fastening method

A nut and double nut technology, applied in the direction of nuts, threaded fasteners, screws, etc., can solve the problems of reduced occlusal force and tightening force, falling off of connecting parts of fixed parts, falling off of nuts, etc.

Active Publication Date: 2018-12-04
山下宝辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the influence of external forces such as vibrations applied to the fastened parts fastened by bolts and nuts, or bolts, etc., the nuts screwed into the external threads of the bolts loosen, resulting in seizure and tightening forces. reduce
In addition, there is a possibility that the nut screwed on the bolt may fall off, and the connection part of the fixed part may fall off.

Method used

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  • Nut and fastening method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0253] Figure 8 It is a perspective view showing the structure of the nut 100 according to Embodiment 1 of the present invention. in addition, Figure 9 It is a cross-sectional view (front view or side view) for explaining the structure of the nut 100 according to the first embodiment. in addition, Figure 8 The upward arrow 99 in the vertical direction is shown in , and the upward side is called "upper" or "upper surface" for convenience. The direction of "upper" is a convenient term, and according to the orientation of the nut 100, the surface named "upper surface" may sometimes be horizontal or downward, and an additional explanation is hereby given.

[0254] The nut 100 of this embodiment is a polygonal nut, and the illustrated example is a hexagonal nut. The nut 100 is composed of a nut main body 10 in which a screw hole 30 is formed, and an upper surface 11 and a side surface 15 of the nut main body 10 . Threads 31 are formed on the inner surface of the screw hole...

Embodiment approach 2

[0275] Figure 16 It is a perspective view showing the structure of the nut 100 concerning Embodiment 2 of this invention. in addition, Figure 17 It is a cross-sectional view (front view or side view) for explaining the structure of the nut 100 according to the second embodiment. In the nut 100 of the above-mentioned embodiment, the slit 20 is formed obliquely, however, in the nut of the second embodiment, the slit 20 is formed to extend in the horizontal direction. By appropriately adjusting the thickness D of the slit 20 so that the slit 20 is extended horizontally (parallel to L3), the same effect as that of the nut 100 of the first embodiment described above can be obtained. In addition, compared with the case where the slit 20 is provided obliquely, there is an advantage that the forming process of the slit 20 is easier, and at the same time, there is an advantage that it is easy to predict the strength of the nut 100 (nut body 10) with the slit.

[0276] In other res...

Embodiment approach 3

[0278] Figure 21 It is a perspective view showing the nut 100 according to Embodiment 3 of the present invention. in addition, Figure 22 is a sectional view (front view or side view) for explaining the structure of the nut 100 according to the third embodiment. The nut 100 of the above-mentioned second embodiment has the upper surface 11 formed obliquely, but the lower surface 13 of the nut according to the third embodiment is also formed obliquely. In the inclined lower surface 13, facing downward, the high region is referred to as a high position 14a, and the low region is referred to as a low position 14b.

[0279] In addition, in the present embodiment, the slit 20 is formed to extend in the horizontal direction, but it may extend obliquely as in the first embodiment. However, when the slit 20 is formed to extend in the horizontal direction, there is an advantage that it is easy to use the upper surface 11 and the lower surface 13 together as a contact surface (fixed ...

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Abstract

To provide a nut that is easy to fasten and does not come loose. A double nut (600) comprises a first nut and a second nut (500). The central axis C of a screw hole (30) in the first nut (400) (C2) and the center axis c of the bolt corresponding to the double nut (600) are consistent with the center axis C of the bolt corresponding to the double nut (600). A lower surface opening formed in the lower surface of the first nut is formed (407), and a central axis C1 of the lower surface opening part (407) extends from the bolt (80) is inclined (theta10) with respect to the central axis C. The second nut (500) is arranged on the upper surface of the second nut (73), an upper surface protruding portion (72), an upper surface protruding portion (72) and a nut main body portion (10) and the central axis c of the formed screw hole is consistent with the central axis C of the bolt.

Description

technical field [0001] The invention relates to a nut and a fastening method, in particular to a locknut and a fastening method using the nut. Background technique [0002] Bolts and nuts have been frequently used in various parts of transportation equipment such as automobiles, airplanes, and trains, various industrial machinery / machines, transportation pipes, and power transmission equipment such as electric power. In addition, bolts and nuts are highly important as mechanical elements for fastening of various fastening parts. However, under the influence of external forces such as vibrations applied to the fastened parts fastened by bolts and nuts, or bolts, etc., the nuts screwed into the external threads of the bolts loosen, resulting in seizure and tightening forces. reduce. In addition, there is a possibility that the nuts screwed into the bolts may fall off, thereby causing the connection parts of the fixed parts to fall off. Because of these circumstances, in ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/286
CPCF16B39/12F16B37/00F16B39/18F16B39/26F16B39/28F16B39/284F16B39/286F16B39/128F16B39/122F16B39/24
Inventor 山下宝辉
Owner 山下宝辉
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