Crankcase mounts and reinforced rubber in mount on force vector

Patent metadata

Field	Value
Publication number	US-11668272-B2
Application number	US-202016834355-A
Country	US
Kind code	B2
Filing date	Mar 30, 2020
Priority date	Oct 3, 2017
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

An engine is disclosed having a starter clutch ring gear, and a crank case having an integral starter pinion accepting member defining a through bore, and a gear assembly having an exterior surface configured to engage a flywheel and an surface engaging the second of the shaft. A starter pinion shaft is disposed through the through bore. The integral starter pinion accepting member defines a surface coupled to an engine mount.

First claim

What is claimed is:

1. An engine comprising:
a clutch ring gear;
a crank case having an integral starter pinion accepting member defining a through bore, the through bore having a through bore interior surface;
a gear assembly having a first fear assembly surface configured to engage the clutch ring gear and a second gear assembly surface configured to engage a linear drive; and
a starter pinion shaft disposed through the through bore, the starter pinion shaft having a first end projecting from a first side of the integral starter pinion accepting member and being configured to be coupled to a starter motor, the starter pinion shaft having a second end projecting from a second side of the integral starter pinion accepting member, the second end defining the linear drive supporting the gear assembly, the starter pinion shaft being supported by a bearing disposed between the starter pinion shaft and the through bore internal surface.

2. The engine of claim 1 wherein the second end defines a worm gear configured to bias the gear assembly in a first direction when the shaft is rotated.

3. The engine of claim 2 wherein the gear assembly has a gear defining an internally threaded bore and an externally threaded surface, the internally threaded bore being configured to engage the worm gear defined on the starter pinion shaft.

4. The engine of claim 1 wherein the gear assembly comprises a return spring configured to bias the first gear assembly surface away from the ring gear when the shaft is not rotating.

5. The engine of claim 1 further comprising:
a locking member annularly disposed about the shaft configured to couple the shaft to starter pinion accepting member.

6. The engine of claim 1 wherein the first end defines a surface having a flat configured to engage a flexible drive member.

7. The engine of claim 1 wherein the gear assembly has a dust cover disposed over a return spring.

8. The engine claim 1 wherein the gear assembly has a gear assembly bearing configured to support the gear assembly on the starter pinion shaft.

9. An engine comprising:
an integral starter pinion accepting member defining a through bore and an external bearing surface, a pinion having a linear drive;
a gear assembly having a clutch ring gear engaging surface and an interior surface configured to couple to the linear drive; and
an engine mount coupled to the external bearing surface.

10. The engine of claim 9 wherein the gear assembly defines an internally threaded bore and an externally threaded surface, the internally threaded bore being configured to engage the linear drive, the linear drive being configured to bias the gear assembly exterior surface toward the ring gear when a shaft of the pinion is rotated.

11. The engine of claim 9 wherein the gear assembly comprises a return spring configured to bias the gear assembly exterior surface away from the ring gear when a shaft of the pinion is not rotating.

12. The engine of claim 9 further comprising a locking flange annularly disposed about a shaft of the pinion configured to couple the shaft to the starter pinion accepting member.

13. The engine of claim 9 wherein a shaft of the pinion has a first end that has a surface with a flat configured to engage a flexible drive member.

14. The engaging of claim 9 wherein the gear assembly has a dust cover disposed over a return spring.

15. An engine comprising:
a crank case having a through bore, the through bore defining a through bore interior surface;
a gear assembly having an exterior surface configured to engage a clutch ring gear and a surface configured to engage a linear drive; and
a starter pinion shaft disposed through the through bore.

16. The engine of claim 15 , further comprising:
the clutch ring gear;
wherein the shaft has a first end projecting from a first side of the through bore and being configured to be coupled to a starter motor, the shaft has a second end projecting from a second side of the through bore, the second end defining a linear drive surface supporting the gear assembly.

17. The engine of claim 16 , wherein the second end defines a worm gear configured to bias the gear assembly in a first direction when the shaft is rotated.

18. The engine of claim 15 , further comprising:
a bearing disposed between the starter pinion shaft and the through bore internal surface;
wherein the pinion shaft is supported by the bearing.

19. The engine of claim 15 , further comprising:
an integral starter pinion accepting member defining the through bore.

20. The engine of claim 19 , further comprising:
an engine mount coupled to an external bearing surface defined by the integral starter pinion accepting member.

Assignees

• Polaris Inc

Inventors

• Dale Chad A
• Hosaluk Lawrence J

Classifications

• B62D21/11

  with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions} · CPC title

• F02N15/06 Primary

  the toothed gears being moved by axial displacement · CPC title

• B62M27/02

  power driven · CPC title

• B62M2027/023

  Snow mobiles characterised by engine mounting arrangements · CPC title

• B60K5/12

  Arrangement of engine supports · CPC title