JPH0238508U

JPH0238508U -

Info

Publication number: JPH0238508U
Application number: JP11697388U
Authority: JP
Priority date: 1988-09-06
Filing date: 1988-09-06
Publication date: 1990-03-14

Description

[Brief explanation of drawings]

第１図は本考案装置に使用するボルト・弾性合
成樹脂製リングおよびワツシヤの斜視図、第２図
は本考案装置の締付け前の状態の縦断正面図、第
３図はその平面図、第４図は締付けが完了した状
態の縦断正面図、第５図はその平面図、第６図は
本考案装置に使用するナツト・弾性合成樹脂製リ
ング・ワツシヤおよびボルトの斜視図、第７図は
本考案装置を押さえボルトに実施した場合の締付
け完了状態の縦断正面図。Ｐ１，Ｐ２，Ｐ３，Ｐ４は被締結体、Ｈ１，Ｈ
２，Ｈ４は貫通穴、Ｈ３はタツプ穴、１はボルト
、１Ａはねじ軸部、１Ｂは角軸部、２はナツト、
２Ａはねじ穴、２Ｂは角軸部、３は弾性合成樹脂
製リング、３Ａは角穴、３Ｂは切込み、３Ｃは内
側破断片、３Ｄは外側破断片、４はワツシヤ、４
Ａは角穴、５，６はワツシヤ。 Fig. 1 is a perspective view of the bolt, elastic synthetic resin ring, and washer used in the device of the present invention, Fig. 2 is a longitudinal sectional front view of the device of the present invention before tightening, Fig. 3 is a plan view thereof, and Fig. 4 The figure is a longitudinal sectional front view of the state in which tightening is completed, Figure 5 is a plan view, Figure 6 is a perspective view of the nut, elastic synthetic resin ring, washer, and bolt used in the device of the present invention, and Figure 7 is the main body. FIG. 3 is a longitudinal sectional front view of a state in which tightening is completed when the invented device is applied to a holding bolt. P1, P2, P3, P4 are objects to be fastened, H1, H
2, H4 is a through hole, H3 is a tap hole, 1 is a bolt, 1A is a screw shaft, 1B is a square shaft, 2 is a nut,
2A is a screw hole, 2B is a square shaft, 3 is an elastic synthetic resin ring, 3A is a square hole, 3B is a notch, 3C is an inner broken piece, 3D is an outer broken piece, 4 is a washer, 4
A is a square hole, 5 and 6 are washers.

Claims

[Scope of utility model registration request]

A square shaft part is integrally formed in the center of the tightening seat surface of the head of the screw part, the outer diameter is larger than the head of the screw part, there is a hole in the center for attachment to the square shaft part, and the thickness is small. An elastic synthetic resin ring that is thinner than the height of the square shaft and a washer that has a square hole in the center that is slightly larger than the square shaft and whose thickness is thicker than the height of the square shaft are stacked to form the corner of the screw part. Fit an elastic synthetic resin ring to the shaft part with the head of the screw part facing the tightening seat side, press the ring by tightening the screw part, and when the approximately specified torque is reached, tighten the ring. A device for indicating incomplete tightening and completion of tightening of a screw component configured to cause the screw component to break at a portion located below the head seat surface of the screw component.