JPS6455351U

JPS6455351U -

Info

Publication number: JPS6455351U
Application number: JP15075787U
Authority: JP
Priority date: 1987-09-30
Filing date: 1987-09-30
Publication date: 1989-04-05

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案の実施例を示し、第１
図はスリーブ、軸スプライン部材および正逆転用
歯車の各スプライン歯の噛合状態を示す展開図、
第２図は第３図の―線断面図、第３図は正逆
転切換装置の全体断面図である。第４図は比較例
を示す第１図相当図である。第５図〜第９図は従
来例を示し、第５図は第１図相当図、第６図は第
２図相当図、第７図は要部の模式側面図、第８図
および第９図はそれぞれスプライン歯の端面の面
取り状態を示す拡大図である。Ａ……正逆転切換装置、２……入力軸、６……
出力軸、１５……軸スプライン部材、１５ａ……
スプライン部、１６……正転用歯車、１６ｂ……
スプライン部、１７……逆転用歯車、１７ｂ……
スプライン部、２０……スリーブ、２０ａ……ス
プライン部、２１……スプライン歯、２１ａ……
傾斜面、２２……正逆転切換機構。 Figures 1 to 3 show embodiments of the present invention;
The figure is a developed view showing the meshing state of each spline tooth of the sleeve, shaft spline member, and forward/reverse gear.
FIG. 2 is a sectional view taken along the line -- in FIG. 3, and FIG. 3 is an overall sectional view of the forward/reverse switching device. FIG. 4 is a diagram corresponding to FIG. 1 showing a comparative example. Figures 5 to 9 show conventional examples, where Figure 5 is a view equivalent to Figure 1, Figure 6 is a view equivalent to Figure 2, Figure 7 is a schematic side view of the main part, and Figures 8 and 9. Each figure is an enlarged view showing the chamfered state of the end face of the spline tooth. A... Forward/reverse switching device, 2... Input shaft, 6...
Output shaft, 15... Shaft spline member, 15a...
Spline part, 16... Forward rotation gear, 16b...
Spline part, 17... Reverse gear, 17b...
Spline part, 20... Sleeve, 20a... Spline part, 21... Spline tooth, 21a...
Inclined surface, 22... Forward/reverse switching mechanism.

Claims

[Scope of utility model registration request]

A forward rotation gear and a reverse rotation gear each rotatably supported on an input shaft, an output shaft, or a shaft in a power transmission path from the input shaft to the output shaft, and having a spline portion on the outer periphery of the boss portion, and a space between the two gears. A shaft spline member that is rotatably provided on the shaft and has a spline portion on the outer periphery, and an inner peripheral spline portion that can mesh with the shaft spline member and the spline portions of each of the gears, and is slidable on the shaft spline member. It is equipped with a forward/reverse switching mechanism consisting of a sleeve externally fitted to the rotationally integral part, and by sliding the sleeve and meshingly connecting it to the spline portion of the forward rotation gear or the reverse rotation gear, either one of the two gears can be switched. The forward/reverse switching device is a forward/reverse switching device for rotationally integrally connecting an input/output shaft with respect to a shaft to switch the rotation between the input and output shafts between a forward rotation direction or a reverse rotation direction, and each of the spline portions is formed with an even number of spline teeth, and the spline The pitch of the teeth is formed in such a pitch that at least three or more teeth are fitted between adjacent teeth, and the axial end of each spline tooth of the spline portion of each gear and the spline portion of the sleeve includes: A forward/reverse switching device characterized in that an inclined surface is formed to guide a sliding sleeve in a rotating direction.