JPH0365046U

JPH0365046U -

Info

Publication number: JPH0365046U
Application number: JP12669589U
Authority: JP
Priority date: 1989-10-31
Filing date: 1989-10-31
Publication date: 1991-06-25

Description

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

第１図は本考案に係る正逆回転切換え装置の一
実施例を示す縦断面図、第２図は一方の回転軸部
分を断面して示す平面図、第３図は第１図の−
線断面図である。３……正逆回転切換え装置、４……他方の回転
軸（入力軸）、５……一方の回転軸（出力軸）、
６……摺動軸、７……正回転伝達手段、８，９…
…回転伝達部（ギア）、１０……逆回転伝達部材
（クラウンギア）、１１……カム体、１２……カ
ム従動子、１３……カム機構、１４，１５……弾
性体。 FIG. 1 is a longitudinal sectional view showing an embodiment of the forward/reverse rotation switching device according to the present invention, FIG. 2 is a plan view showing a section of one rotating shaft portion, and FIG.
FIG. 3... Forward/reverse rotation switching device, 4... Other rotating shaft (input shaft), 5... One rotating shaft (output shaft),
6... Sliding shaft, 7... Positive rotation transmission means, 8, 9...
...Rotation transmission unit (gear), 10... Reverse rotation transmission member (crown gear), 11... Cam body, 12... Cam follower, 13... Cam mechanism, 14, 15... Elastic body.

Claims

【実用新案登録請求の範囲】 (1) 同軸上に離間配置された２本の回転軸と、
この２本の回転軸のいずれか一方に一体回転可能
にかつ軸方向に摺動自在に連結され他方の回転軸
と対向する摺動軸と、この摺動軸とこれに対向す
る前記他方の回転軸との間に形成され一定以上の
摩擦力を伴う当接時にのみ正回転を伝達する正回
転伝達手段と、前記他方の回転軸および摺動軸の
外周部にそれぞれ設けられた回転伝達部と、前記
他方の回転軸および摺動軸に対して軸心を交差し
て回転自在にかつ軸心方向に摺動自在に設けられ
他方の回転軸の回転伝達部に常時係合する一方、
前記摺動軸の回転伝達部に対しては前記正回転伝
達手段が切離された位置でのみ係合して回転方向
を逆にして伝達する逆回転伝達部材と、この逆回
転伝達部材と共に回転し前記摺動軸に軸方向の変
位を与えて正回転伝達と逆回転伝達との切換えを
行うカム機構とから構成され、一方の回転軸に位
置方向の連続回転を入力して他方の回転軸から正
回転と逆回転を交互に出力することを特徴とする
正逆回転切換え装置。 (2) 前記摺動軸を前記他方の回転軸側に常時付
勢する弾性体と、前記逆回転伝達部材を前記他方
の回転軸及び前記摺動軸側に常時付勢する弾性体
とを備え、前記他方の回転軸とこれに係合する前
記摺動軸の正回転伝達手段の各係合面並びに前記
他方の回転軸の回転伝達部及び前記摺動軸の回転
伝達部とこれらに係合する前記逆回転伝達部材の
各係合面をそれぞれ斜面状の凹凸に形成したこと
を特徴とする請求項１記載の正逆回転切換機構。[Claims for Utility Model Registration] (1) Two rotating shafts spaced apart on the same axis,
A sliding shaft connected to one of the two rotating shafts so as to be integrally rotatable and slidable in the axial direction and facing the other rotating shaft, and a sliding shaft that is opposite to the other rotating shaft and rotates the other rotating shaft a positive rotation transmitting means formed between the shaft and the shaft and transmitting positive rotation only when abutting with a friction force of a certain level or more; and a rotation transmitting section provided on the outer periphery of the other rotating shaft and the sliding shaft, respectively. , which is rotatably provided intersecting the axes with respect to the other rotating shaft and the sliding shaft and slidably in the axial direction, and is always engaged with the rotation transmitting portion of the other rotating shaft;
The forward rotation transmitting means engages with the rotation transmitting portion of the sliding shaft only at the separated position and rotates together with the reverse rotation transmitting member that transmits the rotation in the opposite direction. and a cam mechanism that applies axial displacement to the sliding shaft to switch between forward rotation transmission and reverse rotation transmission, and inputs continuous rotation in the positional direction to one rotating shaft and transfers the rotation to the other rotating shaft. A forward/reverse rotation switching device characterized by alternately outputting forward rotation and reverse rotation. (2) An elastic body that always biases the sliding shaft toward the other rotating shaft, and an elastic body that always biases the reverse rotation transmission member toward the other rotating shaft and the sliding shaft. , engaging surfaces of the positive rotation transmission means of the other rotating shaft and the sliding shaft that engage with the other rotating shaft, and the rotation transmitting portion of the other rotating shaft and the rotation transmitting portion of the sliding shaft that engage with these. 2. The forward/reverse rotation switching mechanism according to claim 1, wherein each engagement surface of said reverse rotation transmission member is formed into a slope-like unevenness.