Power transmitting apparatus

Patent metadata

Field	Value
Publication number	US-9580060-B2
Application number	US-201414262607-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Oct 27, 2011
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A power transmitting apparatus comprising a clutch housing, an input member connected to an engine and mounted thereon, driving-side clutch discs, a clutch member connected to an output member, driven-side clutch discs arranged between the driving-side clutch discs, a pressure member for press-contacting the driving-side clutch discs and the driven-side clutch discs together and for releasing the press-contacting force on them, and a starter, such as a kick-starter, able to apply a rotational force to the output member to start the engine, the power transmitting apparatus adapted to transmit or cut off driving power of the engine inputted to the input member to or from the output member. The power transmitting apparatus can comprise a press-contact assisting cam of an inverse-driving side for increasing the press-contacting force on the driving-side clutch discs and the driven-side clutch discs when rotational force is applied to the output member by the kick starter.

First claim

What is claimed is:

1. A power transmitting apparatus comprising:
an input member connected to an engine;
a clutch housing rotatable together with the input member;
a plurality of driving-side clutch discs mounted on the clutch housing;
an output member;
a clutch member connected to the output member;
a plurality of driven-side clutch discs arranged between the driving-side clutch discs alternately therewith;
a pressure member configured to force the driving-side clutch discs and the driven-side clutch discs to be press-contacted with each other and configured to release a press-contacting force acting on them in accordance with approach or separation of the pressure member relative to the clutch member; and
a kick-starter means configured to apply a rotational force to the output member to start the engine by transmitting the rotational force to the engine via the clutch member,
the power transmitting apparatus being configured to transmit a driving power of the engine inputted to the input member to the output member by press-contacting the driving-side clutch discs with the driven-side clutch discs or cut off the driving power of the engine inputted to the input member from the output member by releasing the press-contacting force acting on them;
wherein the power transmitting apparatus further comprises a press-contact assisting cam of an inverse-driving side, the press-contact assisting cam configured to increase the press-contacting force acting on the driving-side clutch discs and the driven-side clutch discs by mechanically translating the rotational force applied to the output member by the kick starter means into the press-contacting force in a direction parallel to an axis of rotation of the output member.

2. The power transmitting apparatus of claim 1 , further comprising a press-contact assisting cam of a normal-driving side configured to increase the press-contacting force acting on the driving-side clutch discs and the driven-side clutch discs when the rotational driving power of the engine inputted to the input member is transmitted to the output member.

3. The power transmitting apparatus of claim 2 , wherein the press-contact assisting cam of the inverse-driving side and the press-contact assisting cam of the normal-driving side are formed by inclined surfaces oppositely formed on the clutch member and the pressure member.

4. The power transmitting apparatus of claim 3 , wherein one pair of the inclined surfaces is formed on opposite end surfaces of openings formed in either one of the clutch member and the pressure member, and a second pair of the inclined surfaces is formed on both end surfaces of projected portions formed on the other of the clutch member and the pressure member and adapted to be passed through the openings, wherein an inclined surface formed on one end surface of the opening and an inclined surface formed on one end surface of the projected portion constitute the press-contact assisting cam of the inverse-driving side, and wherein an inclined surface formed on another end surface of the opening and an inclined surface formed on another end surface of the projected portion constitute the press-contact assisting cam of the normal-driving side.

5. The power transmitting apparatus of claim 4 , wherein intervention members are arranged in gaps between the end surfaces of the opening and the end surfaces of the projected portion after the pressure member has been assembled to the clutch member by passing the projected portions through the openings.

6. The power transmitting apparatus of claim 5 , wherein the driven-side clutch discs are arranged on both the clutch member and the pressure member.

7. The power transmitting apparatus of claim 4 , wherein the driven-side clutch discs are arranged on both the clutch member and the pressure member.

8. A power transmitting apparatus comprising:
an input member connected to an engine;
a clutch housing rotatable together with the input member;
a plurality of driving-side clutch discs mounted on the clutch housing;
an output member;
a clutch member connected to the output member;
a plurality of driven-side clutch discs arranged between the driving-side clutch discs alternately therewith;
a pressure member configured to force the driving-side clutch discs and the driven-side clutch discs to be press-contacted with each other and configured to release a press-contacting force acting on them in accordance with approach or separation of the pressure member relative to the clutch member; and
a starter configured to apply a rotational force to the output member to start the engine by transmitting the rotational force to the engine via the clutch member,
the power transmitting apparatus being configured to transmit a driving power of the engine inputted to the input member to the output member by press-contacting the driving-side clutch discs with the driven-side clutch discs or cut off the driving power of the engine inputted to the input member from the output member by releasing the press-contacting force acting on them;
wherein the power transmitting apparatus further comprises a press-contact assisting cam of an inverse-driving side, the press-contact assisting cam configured to increase the press-contacting force acting on the driving-side clutch discs and the driven-side clutch discs by mechanically translating the rotational force applied to the output member by the starter into the press-contacting force in a direction parallel to an axis of rotation of the output member.

9. The power transmitting apparatus of claim 8 , further comprising a press-contact assisting cam of a normal-driving side configured to increase the press-contacting force acting on the driving-side clutch discs and the driven-side clutch discs when the rotational driving power of the engine inputted to the input member is transmitted to the output member.

10. The power transmitting apparatus of claim 9 , wherein the press-contact assisting cam of the inverse-driving side and the press-contact assisting cam of the normal-driving side are formed by inclined surfaces oppositely formed on the clutch member and the pressure member.

11. The power transmitting apparatus of claim 10 , wherein one pair of the inclined surfaces is formed on opposite end surfaces of openings formed in either one of the clutch member and the pressure member, and a second pair of the inclined surfaces is formed on both end surfaces of projected portions formed on the other of the clutch member and the pressure member and adapted to be passed through the openings, wherein an inclined surface formed on one end surface of the opening and an inclined surface formed on one end surface of the projected portion constitute the press-contact assisting cam of the inverse-driving side, and wherein an inclined surface formed on another end surface of the opening and an inclined surface formed on another end surface of the projected portion constitute the press-contact assisting cam of the normal-driving side.

12. The power transmitting apparatus of claim 11 , wherein intervention members are arranged in gaps between the end surfaces of the opening and the end surfaces of the projected portion after the pressure member has been assembled to the clutch member by passing the projected portions through the openings.

13. The power transmitting apparatus of claim 12 , wherein the driven-side clutch discs are arranged on both the clutch member and the pressure member.

14. The power transmitting apparatus of claim 11 , wherein the driven-side clutch discs are arranged on both the clutch member and the pressure member.

Assignees

• Fcc Kk

Inventors

• Nonaka Masayuki
• Ando Go
• Nagasaka Hideki
• Oishi Hideyuki

Classifications

• B60W10/02 Primary

  including control of driveline clutches · CPC title

• F16D13/56

  in which the clutching pressure is produced by springs only · CPC title

• B60W10/06

  including control of combustion engines · CPC title

• F16D13/54 Primary

  with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member · CPC title

• F16D2300/24

  Concentric actuation rods, e.g. actuation rods extending concentrically through a shaft · CPC title