JPH0229308U

JPH0229308U -

Info

Publication number: JPH0229308U
Application number: JP10771088U
Authority: JP
Priority date: 1988-08-16
Filing date: 1988-08-16
Publication date: 1990-02-26

Description

[Brief explanation of drawings]

第１図は本考案に係るトルク規定型頭付螺子部
材の一例として丸頭螺子を示す斜視図、第２図は
第１図に示す丸頭螺子を用いて２枚の板を固定す
る状況を説明する斜視図、第３図は第１図に示す
丸頭螺子で２枚の板を固定した状態を示す側断面
図、第４図は本考案に係るトルク規定型頭付螺子
部材の一例としてボルトを示す斜視図、第５図は
第４図に示すボルトを用いて２枚の板を固定する
状況を説明する斜視図、第６図は第４図に示すボ
ルトで２枚の板を固定した状態を示す側断面図、
第７図は第４図に示すボルトを鉄道のレールを固
定する固定具の締付ボルトとして適用した例を示
す説明図、第８図は第４図に示すボルトでビル等
の基礎工事の締付ボルトとして適用した例を示す
説明図、第９図は従来に於ける丸頭螺子を用いて
２枚の板を固定する状況を説明する斜視図、第１
０図は従来に於けるボルトを用いて２枚の板を固
定する状況を説明する斜視図である。図において、２０は丸頭螺子、２１，５１は螺
子部、２２，５２は第二の頭部、２３，５３は切
欠き、２４，５４はトルク規定部、２５，５５は
頭部、２６は＋溝、４０はドライバー、５０は６
角ボルト、６０はレンチである。 Fig. 1 is a perspective view showing a round head screw as an example of the torque regulating type headed screw member according to the present invention, and Fig. 2 shows a situation in which two plates are fixed using the round head screw shown in Fig. 1. FIG. 3 is a side sectional view showing a state in which two plates are fixed with the round head screw shown in FIG. 1, and FIG. 4 is an example of the torque regulating type headed screw member according to the present invention. A perspective view showing the bolts, Figure 5 is a perspective view illustrating the situation in which two plates are fixed using the bolts shown in Figure 4, and Figure 6 is a perspective view illustrating the situation in which two plates are fixed using the bolts shown in Figure 4. A side sectional view showing a state in which
Figure 7 is an explanatory diagram showing an example in which the bolt shown in Figure 4 is used as a tightening bolt for a fixture that fixes railway rails, and Figure 8 is an explanatory diagram showing an example in which the bolt shown in Figure 4 is used to tighten the foundation work of buildings, etc. Fig. 9 is an explanatory diagram showing an example of application as a bolt; Fig. 9 is a perspective view illustrating a situation in which two plates are fixed using a conventional round head screw;
FIG. 0 is a perspective view illustrating a conventional situation in which two plates are fixed using bolts. In the figure, 20 is a round head screw, 21, 51 are screw parts, 22, 52 are second heads, 23, 53 are notches, 24, 54 are torque regulating parts, 25, 55 are heads, and 26 are + Groove, 40 is driver, 50 is 6
The square bolt 60 is a wrench.

Claims

[Scope of Claim for Utility Model Registration] (1) In a headed screw member having a tightened part rotated by a tightening member in the head and a threaded part in the side part, the head and the screw A second head is provided between the
A torque regulating type headed screw member, characterized in that a torque regulating portion is formed between a head and a second head, the torque regulating portion breaking when a torque of a predetermined value or more is applied to the head. (2) The torque regulating type headed screw member according to claim 1, wherein the torque regulating portion has a smaller diameter than the threaded portion. (3) The torque regulating type headed screw member according to claim 1, wherein the torque regulating portion is made of a member having a lower strength than the screw portion. (4) The torque regulating type headed screw member according to claim 1, wherein the second head has the same shape as the head. (5) The torque regulating type headed screw member according to claim 1, wherein the second head has a larger diameter than the outer diameter of the threaded portion, and is either larger or smaller in diameter than the head.