JPH0173561U

JPH0173561U -

Info

Publication number: JPH0173561U
Application number: JP1987168878U
Authority: JP
Priority date: 1987-11-04
Filing date: 1987-11-04
Publication date: 1989-05-18

Description

[Brief explanation of the drawing]

第１図は本考案にかかる双方向速度切替クラツ
チ機構の好適な実施例を示す要部縦断面図、第２
図は第１図の要部分解説明図、第３図は第１図の
―断面であつて、第１駆動軸から被駆動軸に
駆動力が伝達される第１駆動系の作用を示す断面
図、第４図は第３図と同様であるが、第２駆動外
輪から被駆動軸に駆動力が伝達される第２駆動系
の作用を説明する断面図、第５図は第３図と同様
であるが、反対方向の第１駆動系の作用を示す断
面図、第６図は本考案における特徴的な外周面を
示す切替カムの拡大図、第７Ａ，７Ｂ，７Ｃ，７
Ｄ図はそれぞれ、本考案に係る伝達爪の好適な加
工状態を示す説明図、第８図は本考案に係る他の
伝達爪加工工程を示す説明図である。１０……ハウジング、１２……被駆動軸、１４
……第２駆動外輪、１６……第１駆動軸、２２…
…切替カム、２４……受け面、２６……伝達爪、
２８……カム面、３０……伝達カム車、３２……
リテーナ爪、３４……伝達爪、３５……ローラ、
３６……リテーナ、３８……ローラ溝。 FIG. 1 is a longitudinal cross-sectional view of main parts showing a preferred embodiment of the bidirectional speed switching clutch mechanism according to the present invention, and FIG.
The figure is an exploded explanatory view of the main parts of Fig. 1, and Fig. 3 is a - cross section of Fig. 1, which is a cross section showing the action of the first drive system in which the driving force is transmitted from the first drive shaft to the driven shaft. Figure 4 is the same as Figure 3, but Figure 5 is a cross-sectional view explaining the action of the second drive system in which driving force is transmitted from the second drive outer wheel to the driven shaft, and Figure 5 is the same as Figure 3. 6 is an enlarged view of the switching cam showing the characteristic outer peripheral surface of the present invention; 7A, 7B, 7C, 7
FIG. 8 is an explanatory view showing a preferable machining state of the transmission pawl according to the present invention, and FIG. 8 is an explanatory diagram showing another process of machining the transmission pawl according to the present invention. 10... Housing, 12... Driven shaft, 14
...Second drive outer wheel, 16...First drive shaft, 22...
...Switching cam, 24...Receiving surface, 26...Transmission claw,
28...Cam surface, 30...Transmission cam wheel, 32...
Retainer claw, 34...Transmission claw, 35...Roller,
36...retainer, 38...roller groove.

Claims

[Claims for Utility Model Registration] In a bidirectional speed switching clutch mechanism that transmits the driving force of either the high-speed side of a first drive shaft or a second drive outer wheel having different rotational speeds to a driven shaft regardless of the rotation direction, The first drive shaft is provided with a transmission cam wheel that rotates integrally therewith, and the driven shaft is provided with a switching cam that rotates in conjunction with the transmission cam wheel, and the second drive outer wheel and the switching cam are connected to each other. A plurality of rollers arranged around the outer periphery of the switching cam are inserted at predetermined intervals by a retainer between the rollers, the retainer makes weak contact with the second driving outer ring, and the switching cam has a generally triangular rice ball shape. An arcuate receiving surface is formed on the outer periphery of each apex of the switching cam to be bearing on the inner periphery of the retainer, and a roller is formed on the side periphery of the switching cam to connect the roller to the second driving outer wheel in correspondence with each roller. A cam surface is provided that plays with or is held between the switching cam, and a transmission pawl that plays with the transmission cam wheel with a predetermined play in the rotational direction is provided on the end surface of the cam surface, and the transmission pawl is provided on the end surface of the switching cam. The transmission pawls are integrally formed, and the rotational direction end surfaces of the adjacent pawls are formed on a straight line or in parallel with each other, and the retainer has roller grooves for positioning the plurality of rollers at predetermined positions, and the first drive A cam groove is provided to hold the retainer itself in a position where the roller is brought into play between the switching cam and the second driving outer ring by rotation of the shaft, and the transmission cam wheel is provided with a transmission pawl of the switching cam. and a retainer pawl that engages with the cam groove of the retainer to release the retainer and rollers to a predetermined position, and the cam surface of the switching cam has a shape that is symmetrical with respect to its center normal. When the first drive shaft rotates at a higher speed than the second drive outer wheel, the transmission cam wheel switches the rollers via the retainer between the cam and the second drive outer wheel in any direction of rotation. While maintaining the idle state, the rotation of the first drive shaft is transmitted to the driven shaft, and when the second drive outer wheel rotates at a higher speed than the first drive shaft, the second drive shaft rotates in either direction. A two-way motor, characterized in that the outer ring causes the retainer and roller to precede the transmission cam wheel, and the roller is sandwiched between the second driving outer ring and the switching cam, and the driving force of the second driving outer ring is transmitted to the driven shaft. Speed switching clutch mechanism.