JPH0173562U

JPH0173562U -

Info

Publication number: JPH0173562U
Application number: JP1987168879U
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図は本考案に係るリテーナの弾圧舌片
を示す要部拡大図、第７図は本考案に係る弾圧舌
片付リテーナの他の実施例を示す要部断面図であ
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、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、５０……弾圧舌片。 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 Figure 1, and Figure 3 is a cross-section of Figure 1, which shows 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 a cross-sectional view showing the action of the first drive system in the opposite direction, FIG. 6 is an enlarged view of the main part showing the pressing tongue of the retainer according to the present invention, and FIG. 7 is the pressing tongue according to the present invention. FIG. 7 is a sectional view of main parts showing another embodiment of the attached retainer. 10... Housing, 12... Driven shaft, 14
...Second drive outer wheel, 16...First drive shaft, 22...
...Switching cam, 26...Transmission claw, 28...Cam surface,
30...Transmission cam wheel, 32...Retainer claw, 34
...transmission claw, 35...roller, 36...retainer, 38...roller groove, 50...pressing tongue piece.

Claims

[Claims for Utility Model Registration] A dual-speed switching clutch mechanism that transmits the driving force of either the high-speed side of the first drive shaft or the second drive outer wheel, which have different rotational speeds, to the driven shaft regardless of the rotation direction, comprising: 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 on the outer periphery of the switching cam are inserted in between by a retainer at predetermined intervals, and the retainer is integrally provided with a resilient tongue piece that makes frictional contact with the second driving outer ring, A cam surface is provided on the side circumference of the cam to correspond to each roller and play with or clamp the roller between the second driving outer ring, and the end surface of the cam has a predetermined play in the direction of rotation of the transmission cam. A transmission pawl that engages with the vehicle is provided, the retainer has a roller groove that positions the plurality of rollers at a predetermined position, and rotation of the first drive shaft causes the rollers to move between the switching cam and the second drive outer wheel. A cam groove for holding the retainer itself is provided at a position where the retainer itself is in a loose state, and the transmission cam wheel has a transmission groove for receiving the transmission pawl of the switching cam, and a cam groove that engages with the cam groove of the retainer to hold the retainer. and a retainer claw for releasing the roller to a predetermined position, and the cam surface of the switching cam has a shape that is bilaterally symmetrical with respect to the center normal thereof, and when the first drive shaft rotates at a higher speed than the second drive outer wheel. In this case, the rotation of the first drive shaft is controlled while the transmission cam wheel maintains the roller through the retainer in the loose state between the switching cam and the second drive outer wheel in any direction of rotation. When the second drive outer wheel rotates at a higher speed than the first drive shaft, the second drive outer wheel moves the retainer and roller ahead of the transmission cam wheel in any direction so that the second drive outer wheel rotates at a higher speed than the first drive shaft. A bidirectional speed switching clutch mechanism, characterized in that it is held between a driving outer wheel and a switching cam, and the driving force of the second driving outer wheel is transmitted to a driven shaft.