JPS63187760U

JPS63187760U -

Info

Publication number: JPS63187760U
Application number: JP8059987U
Authority: JP
Priority date: 1987-05-26
Filing date: 1987-05-26
Publication date: 1988-12-01

Description

[Brief explanation of the drawing]

第１図は本考案に係るボールねじ装置の第１の
実施例の正面図、第２図及び第３図は同上断面図
、第４図は同上第２の実施例を示す断面図、第５
図は同上第３の実施例を示す断面図、第６図は同
上第３の実施例に適用される弾性部材の斜視図、
第７図は従来のボールねじ装置を示す正面図、第
８図及び第９図は従来のボールねじ装置の断面図
である。１……第１のボールナツト、２……第２のボー
ルナツト、１０，１１……スペーサ、１２，１３
……キー溝、１４，１５，２０，２１……キー、
１６，１７，２２，２３，２４……弾性部材、１
９……ねじ穴。 FIG. 1 is a front view of a first embodiment of the ball screw device according to the present invention, FIGS. 2 and 3 are sectional views of the same, FIG. 4 is a sectional view of the second embodiment of the same, and FIG.
The figure is a cross-sectional view showing the third embodiment same as above, and FIG. 6 is a perspective view of an elastic member applied to the third embodiment same as above.
FIG. 7 is a front view showing a conventional ball screw device, and FIGS. 8 and 9 are sectional views of the conventional ball screw device. 1... First ball nut, 2... Second ball nut, 10, 11... Spacer, 12, 13
...Keyway, 14, 15, 20, 21...Key,
16, 17, 22, 23, 24... elastic member, 1
9...Screw hole.

Claims

[Claims for Utility Model Registration] (1) Preload is applied by a half-split spacer inserted between two ball nuts, and the spacer falls off by a key that spans the two ball nuts and is used to prevent the ball nut from rotating. The ball screw device is characterized in that an elastic member is interposed between the spacer and the key, and the key is fixed to the outer surface of the ball nut with no gap between the mating surfaces of the spacer. ball screw device. (2) The ball screw device according to claim 1, wherein the elastic member is a synthetic resin that fills a gap between the key groove formed in the spacer and the key. .