JPH0344270U

JPH0344270U -

Info

Publication number: JPH0344270U
Application number: JP1989105011U
Authority: JP
Priority date: 1989-09-07
Filing date: 1989-09-07
Publication date: 1991-04-24

Description

[Brief explanation of drawings]

第１図および第２図は、従来のＵパツキンタイ
プのスプライン軸用のＵパツキンのそれぞれ断面
図および平面図である。第３図は、本考案にかか
るスプライン軸用のＵパツキンの実施例を示す断
面図である。第４図および第５図は、本考案にか
かるスプライン軸用のＵパツキンの他の実施例を
示すそれぞれ断面図および平面図である。第６図
は、厚肉部をリブとした本考案にかかるＵパツキ
ンの別の態様を示す平面図である。１……Ｕパツキン、２……運動面、３……内周
リツプ、４……外周リツプ、５……谷、６……突
起、７……厚肉部、８……接触面、９……側面、
１０……リブ、１１……Ｕパツキン、１２……運
動面、１３……内周リツプ、１４……外周リツプ
、１５……谷、１６……突起、１８……接触部、
２０……スプライン軸、２１……軸外周面、２２
……スプライン溝、２３……角部、２４……溝底
部、２５……装着溝。 FIGS. 1 and 2 are a sectional view and a plan view, respectively, of a conventional U-packet type U-packet for a spline shaft. FIG. 3 is a sectional view showing an embodiment of a U-packet for a spline shaft according to the present invention. 4 and 5 are a sectional view and a plan view, respectively, showing other embodiments of the U-packet for a spline shaft according to the present invention. FIG. 6 is a plan view showing another embodiment of the U-packet according to the present invention, in which the thick portion is ribbed. 1...U packing, 2...Movement surface, 3...Inner circumference lip, 4...Outer circumference lip, 5...Trough, 6...Protrusion, 7...Thick wall part, 8...Contact surface, 9... …side,
10... Rib, 11... U packing, 12... Movement surface, 13... Inner circumference lip, 14... Outer circumference lip, 15... Valley, 16... Protrusion, 18... Contact portion,
20...Spline shaft, 21...Shaft outer peripheral surface, 22
... Spline groove, 23 ... Corner, 24 ... Groove bottom, 25 ... Mounting groove.

Claims

[Claims for Utility Model Registration] (1) A spline equipped with a protrusion 6 extending in the axial direction and having substantially the same cross-sectional shape as the spline groove, which is installed in contact with the spline shaft to seal fluid pressure leaks. In a U-packet for a shaft, a thick part 7 wider than the width of the protrusion 6 that fits into the spline groove.
are provided on the side of the valley 5 of both or one of the inner circumferential lip 3 and the outer circumferential lip 4, and the thick portions 7 are in pressure contact with each other or in pressure contact with a portion of the opposite lip during installation, The lip portion including the protrusion 6 and thick portion 7 in contact with the spline groove is compressed, and the contact surface 8 at the tip of the inner lip 3 is a convex curved surface. U-packet for spline shaft. (2) Instead of the thick part 7, inner and outer circumferential lips 3, 4 are provided in the valley 5 located in the part where the protrusion 6 is provided.
2. The U-packet for a spline shaft according to claim 1, further comprising a rib (10) extending over the spline shaft. (3) Either end of the thick portion 7 and the rib 10 is provided to protrude in the axial direction from the side surface 9 of the lip having the shortest axial length among the inner and outer circumferential lips 3 and 4. A U-packet for the spline shaft according to item 1 or 2.