JPS5990558U

JPS5990558U - Belt sander idle pulley rattling prevention mechanism

Info

Publication number: JPS5990558U
Application number: JP18754282U
Authority: JP
Inventors: 柏野　良典; 仲沢　祐喜
Original assignee: 日立工機株式会社
Priority date: 1982-12-10
Filing date: 1982-12-10
Publication date: 1984-06-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

゛第１図１ま従来の電気ベルトサングーのベルト張機構
を示す要部横断平面図、第２図は、本考案の一実施例に
なる、ベルト張機構を示す横断平面図、第３図は、アイ
ドルプーリー保持体平面図、第４図はボルトの部分縦断
側面図、第５図はフランジ付ピンの側面図である。図において、１はハウジング、２は保持枠体、３′はア
イドルプーリー保持体、４はアイドルプーリー、５はバ
ネ、６はカムレバー、３’　ａは長方形穴部、７′はボ
ルト、７′ａはネジ部、８は研摩ベルト、９はフランジ
付ピン、９ａはフランジ部である。゛Fig. 1 is a cross-sectional plan view of main parts showing a belt tensioning mechanism of a conventional electric belt Sangu; Fig. 2 is a cross-sectional plan view showing a belt tensioning mechanism according to an embodiment of the present invention; Fig. 3 4 is a plan view of the idle pulley holder, FIG. 4 is a partial longitudinal sectional side view of the bolt, and FIG. 5 is a side view of the flanged pin. In the figure, 1 is a housing, 2 is a holding frame, 3' is an idle pulley holder, 4 is an idle pulley, 5 is a spring, 6 is a cam lever, 3'a is a rectangular hole, 7' is a bolt, 7'a 8 is a threaded portion, 8 is an abrasive belt, 9 is a flanged pin, and 9a is a flange portion.

Claims

[Scope of utility model registration request]

A drive motor held in a housing, a speed reduction device interlocked with the drive motor, a cylindrical drive pulley interlocked with the speed reduction device, a holding frame mounted on the housing, and movable to the holding frame. an idler pulley holder held in the housing; a cylindrical idler pulley rotatably held at the end of the idler pulley holder; and a cylindrical idler pulley rotatably held at the end of the idler pulley holder; It consists of a positioning bolt screwed onto a disposed female threaded part, and an abrasive belt is installed between the cylindrical drive pulley and a cylindrical idle pulley of the same shape to prevent the movement of the positioning bolt end. In the belt sensor that positions the idle pulley and gives circular motion to the abrasive belt, a rectangular hole is drilled through the center of a box-like shape holding frame fixed to the housing, The idle pulley holder is inserted into the rectangular hole and held, an elastic body is disposed between the box-shaped holding frame and the idle pulley holder, and the idle pulley holder is rotated. A cam with a fixed lever part,
A rectangular hole is provided in the idle pulley holder, and a flange is provided at the tip of the bolt. The bolt and the idle pulley holder are arranged in a locking manner in the rectangular hole to restrict looseness of the idle pulley holder in a direction perpendicular to the circumferential direction of the abrasive belt. Idle pulley rattling prevention mechanism.