JPS61201706U

JPS61201706U -

Info

Publication number: JPS61201706U
Application number: JP8668785U
Authority: JP
Priority date: 1985-06-07
Filing date: 1985-06-07
Publication date: 1986-12-18

Description

[Brief explanation of the drawing]

第１図に本考案の一実施例を示す電気ドリルの
縦断側面図、第２図本考案要部の分解斜視図、第
３図、第４図、第５図は動作形態を示すＡ―Ａ線
断面図を示す。また、第６図に従来技術の一実施
例を示す電気ドリルの縦断側面図を示す。図において、２はギヤカバ、３はインナカバ、
４はスピンドル、８は低速側ギヤ、９は高速側ギ
ヤ、１０はシフトレバ、１４はシフトスプリング
、１７は低速側ピニオン、１８は高速側ピニオン
、１９はフアーストギヤ、２１はアマチユアピニ
オンである。 Fig. 1 is a longitudinal cross-sectional side view of an electric drill showing an embodiment of the invention, Fig. 2 is an exploded perspective view of the main parts of the invention, and Figs. 3, 4, and 5 are A-A showing operating modes. A line cross-sectional view is shown. Further, FIG. 6 shows a longitudinal sectional side view of an electric drill showing an example of the prior art. In the figure, 2 is a gear cover, 3 is an inner cover,
4 is a spindle, 8 is a low-speed gear, 9 is a high-speed gear, 10 is a shift lever, 14 is a shift spring, 17 is a low-speed pinion, 18 is a high-speed pinion, 19 is a first gear, and 21 is an armature pinion.

Claims

[Scope of Claim for Utility Model Registration] A power tool that transmits the power of a motor to an end tool through a gear mechanism to perform various operations, wherein the gear mechanism includes an armature pinion provided on an armature shaft; a first gear that meshes with the first gear, a high speed side pinion and a low speed side pinion that are provided coaxially with the first gear, and a high speed side gear that is slidably disposed on the output shaft and meshes with the high speed side pinion and the low speed side pinion;
and a low-speed side gear, in which the switching member arbitrarily selects between two types of gear trains, the high-speed side and the low-speed side, by a switching member, wherein the switching member is operably mounted on a frame housing the gear mechanism. An eccentric pin is disposed at the tip of the switching member, and the eccentric pin slides the high-speed and low-speed gears on the output shaft by its rotation, and a circumferential groove is provided at the center of the outer periphery that engages with the frame. the frame body is provided with an elastic body that is orthogonal to the switching member and engages with the circumferential groove; A transmission mechanism in which rotation is regulated and positioned by abutment of the elastic body against the flat surface, thereby facilitating switching between high and low speed gears.