JPS622820U

JPS622820U -

Info

Publication number: JPS622820U
Application number: JP9300085U
Authority: JP
Priority date: 1985-06-21
Filing date: 1985-06-21
Publication date: 1987-01-09

Description

[Brief explanation of the drawing]

第１図は、この考案の一実施例を示す縦断正面
図、第２図はボルトの説明図でａは正面図、ｂは
下面図、第３図は円形の座金の下面図、第４図は
角部が欠円状の方形の座金の説明図でａは平面図
、ｂは下面図、第５図および第６図はこの考案の
他の実施例を示す説明図、第５図はボルトの説明
図でａは正面図、ｂ，ｃは下面図、第６図は円形
の座金の説明図でａは正面図、ｂは下面図、第７
図は角部が欠円状の方形の座金の説明図でａは正
面図、ｂは下面図、第８図は方形の座金の説明図
でａは正面図、ｂは下面図、第９図および第１０
図はこの考案のさらに他の実施例を示す説明図、
第９図はボルトの説明図でａは正面図、、ｂは下
面図、第１０図は円形の座金の説明図でａは正面
図、ｂは下面図、第１１図は角部が欠円状の方形
の座金の説明図でａは正面図、ｂは下面図、第１
２図は方形の座金の説明図でａは正面図、ｂは下
面図、第１３図は従来例を示す縦断正面図、第１
４図は同円形の座金の説明図でａは正面図、ｂは
下面図である。１……ボルト、４……ナツト、７，８……被締
結部材、９……頭裏面、１０……突出部、１１…
…座金、１３……食込係止部。なお、各図中同一
符号は同一または相当部分を示す。 Fig. 1 is a longitudinal sectional front view showing one embodiment of this invention, Fig. 2 is an explanatory view of the bolt, a is a front view, b is a bottom view, Fig. 3 is a bottom view of a circular washer, Fig. 4 is an explanatory view of a rectangular washer with round corners, a is a plan view, b is a bottom view, Figs. 5 and 6 are explanatory views showing other embodiments of this invention, and Fig. 5 is a bolt. In the explanatory drawings, a is a front view, b and c are bottom views, Fig. 6 is an explanatory drawing of a circular washer, a is a front view, b is a bottom view, and Fig. 7
The figure is an explanatory diagram of a square washer with rounded corners, a is a front view, b is a bottom view, and Fig. 8 is an explanatory diagram of a square washer, a is a front view, b is a bottom view, and Fig. 9. and 10th
The figure is an explanatory diagram showing still another embodiment of this invention,
Figure 9 is an explanatory diagram of a bolt, a is a front view, b is a bottom view, Figure 10 is an explanatory diagram of a circular washer, a is a front view, b is a bottom view, and Figure 11 is a corner with a missing circle. In the explanatory diagram of a square washer, a is a front view, b is a bottom view, and the first
Figure 2 is an explanatory diagram of a rectangular washer, where a is a front view, b is a bottom view, Figure 13 is a longitudinal sectional front view showing a conventional example, and Figure 1 is a front view.
Figure 4 is an explanatory view of the same circular washer, where a is a front view and b is a bottom view. DESCRIPTION OF SYMBOLS 1... Bolt, 4... Nut, 7, 8... Member to be fastened, 9... Back of head, 10... Projection, 11...
...Washer, 13... Biting locking part. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A bolt that is inserted into a member to be fastened, a nut that is screwed onto the bolt, a protrusion provided on the back of the head of the bolt, and a protrusion that is non-rotatably fitted into the protrusion. Insert,
A fastener characterized by comprising: a washer having a protruding biting locking portion. (2) The fastener according to claim 1 of the utility model registration claim, characterized in that the biting locking portions protrude downward at four locations on the outer periphery of the washer. (3) The fastener according to claim 1, wherein the biting locking portion is a plurality of protrusions protruding from the back surface of the washer. (4) The fastener according to claim 3, wherein the biting locking portion is a plurality of protrusions protruding from the front and back surfaces of the washer.