JPS58116304U - automatic telescopic device - Google Patents

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例にヰる自動伸縮装置を底面か
ｔみて中心軸から水半に断面した要部の断面図、第２図
は同差動歯車機構の横断面図、第　　　　　□３図（よ
第２図の側面図、第４図は電動機の！源回　　　　　゛
路間である。 １・・・ドライブコード、２・・・回転ドラム、３・・
・回転受はケース、６・・・内歯歯車、７・・・差動歯
車機構、８・・・出力ギヤ、９・・・電動機、１０・・
・太陽ギヤ、１１・・・遊星ギヤ、１２・・・内歯ギヤ
、１２ａ・・・凹部、　−１４・・・内部スイッチ、１
４ａ・・・コロ状部材、１４ｂ・・・可動接点、１４Ｃ
，１４ｄ・・・固定接点。 第１図 第４図Fig. 1 is a cross-sectional view of the main parts of an automatic telescopic device according to an embodiment of the present invention taken horizontally from the central axis when viewed from the bottom; Fig. 2 is a cross-sectional view of the differential gear mechanism; □Figure 3 (Side view of Figure 2, Figure 4 shows the power supply circuit of the motor. 1... Drive cord, 2... Rotating drum, 3...
・The rotating receiver is a case, 6... Internal gear, 7... Differential gear mechanism, 8... Output gear, 9... Electric motor, 10...
・Sun gear, 11... Planet gear, 12... Internal gear, 12a... Recess, -14... Internal switch, 1
4a... Roller-shaped member, 14b... Movable contact, 14C
, 14d... Fixed contact. Figure 1 Figure 4

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 伸縮多段ポールに接続されてポールを伸−させる可撓性
ドライブコードと、このドライブコードを巻取り、巻戻
しする回転′ドラムと、この回転ドラムを回転可能に軸
支した回転受はケースと、前、記回転ドラムおよび回転
受はケースで囲まれ゛た内部に収容されかつ回転ドラム
内周面に設けた内歯歯車と噛合する出力ギヤを有する差
動歯車機構と、この差動歯車機構の太陽ギヤに動力を伝
える電動機とを備え、前記差動歯車機構の太陽ギヤと噛
合する遊星ギヤを前記回転受はケースに摩擦係合された
内歯ギヤに噛合させ、前記電動機の電源回路に、伸縮多
段ポールの伸縮限での過負荷による差動歯車機構の内歯
ギヤの滑り回動により切れるスイッチを設けたことを特
徴とする自動伸縮装置。A flexible drive cord connected to the telescopic multi-stage pole to extend the pole, a rotary drum for winding and unwinding the drive cord, a rotary receiver rotatably supporting the rotary drum, and a case. The rotating drum and the rotating receiver are housed inside a case, and include a differential gear mechanism having an output gear meshing with an internal gear provided on the inner peripheral surface of the rotating drum, and a differential gear mechanism of the differential gear mechanism. an electric motor that transmits power to a sun gear, the planetary gear that meshes with the sun gear of the differential gear mechanism is meshed with an internal gear that is frictionally engaged with the case of the rotary receiver, and a power supply circuit of the electric motor; An automatic telescopic device characterized by being provided with a switch that is turned off by sliding rotation of an internal gear of a differential gear mechanism due to an overload at the telescopic multi-stage pole's telescopic limit.