JPH0468251U

JPH0468251U -

Info

Publication number: JPH0468251U
Application number: JP1990091956U
Authority: JP
Priority date: 1990-08-31
Filing date: 1990-08-31
Publication date: 1992-06-17

Description

[Brief explanation of the drawing]

第１図は本考案にかかる捩りシールが適用され
たピン継手部分の一実施例の断面図、第２図は本
考案の捩りシール単体を示し、ａは組み立て前の
状態の断面図、ｂは組み立て後の断面図、第３図
は本考案の弾性体の圧縮された場合とされない場
合の変形状態を示し、ａは側面図、ｂは断面図、
第４図は従来の掘削機に使用されているピン継手
を示す斜視図、第５図は第４図等のブームとブー
ム取り付け部におけるピン継手装置の断面図、第
６図は従来の捩りシールの断面図である。１ａ，１ｂ……第１部材（ブーム取り付け部）
、２……第２部材（ブーム先端部）、３……孔、
４……ピン、５……ブツシユ、６……カウンタボ
ア、７……内側リング、８……弾性体、９……外
側リング。 Fig. 1 is a sectional view of an embodiment of the pin joint part to which the torsion seal according to the present invention is applied, and Fig. 2 shows the torsion seal of the present invention alone, where a is a sectional view before assembly, and b is a sectional view of the pin joint part. 3 shows the deformed state of the elastic body of the present invention when it is compressed and when it is not compressed; a is a side view; b is a sectional view;
Figure 4 is a perspective view showing a pin joint used in a conventional excavator, Figure 5 is a sectional view of the boom shown in Figure 4 and the pin joint device at the boom attachment part, and Figure 6 is a conventional torsion seal. FIG. 1a, 1b...first member (boom attachment part)
, 2... second member (boom tip), 3... hole,
4...Pin, 5...Button, 6...Counterbore, 7...Inner ring, 8...Elastic body, 9...Outer ring.

Claims

[Claims for Utility Model Registration] 1. A second member is fitted between the separated first members, a pin is inserted into a hole passing through both members so that they can mutually rotate, and the In a pin joint in which a pusher that contacts a pin is fitted inside and the pin is fixed to a first member, a counterbore formed between an end surface of the pusher of the second member and an inner surface of the opposing first member is provided. A torsion seal characterized in that an inner ring is provided with a vulcanized elastic body, and the elastic body is press-fitted into an outer ring having a protective ring function. 2. A second member is fitted between the separated first members, a pin is inserted into a hole passing through both members to enable mutual rotation, and a pusher that contacts the pin is fitted into the second member. At the same time, in the pin joint in which the pin is fixed to the first member, a counterbore formed between the bush end face of the second member and the opposing inner surface of the first member is vulcanized and formed on the outer ring. 1. A torsion seal characterized in that an elastic body is provided, and the elastic body is press-fitted into an inner ring having a protective ring function.