Gear assembly

• US 6,324,930 B1
• Filed: 03/22/2000
• Issued: 12/04/2001
• Est. Priority Date: 03/22/2000
• Status: Expired due to Fees

• Current Assignee: New Venture Gear, Incorporated (Magna International Incorporated)
• Original Assignee: New Venture Gear, Incorporated (Magna International Incorporated)
• Inventors: Forsyth, John R.
• Primary Examiner(s): Estremsky, Sherry
• Assistant Examiner(s): PANG, ROGER L
• Application Number:
  US09/533,626
• Time in Patent Office: 622 Days
• Field of Search: 192/53.32, 192/53.34, 744/32, 744/39, 744/46, 744/47
• US Class Current: 74/446
• CPC Class Codes: F16D 2023/0618 Details of blocking mechanism comprising a helical spring loaded element, e.g. ball
• CPC Class Codes: F16D 2023/0625 Details of members being coupled, e.g. gears
• CPC Class Codes: F16D 2023/0681 Double cone synchromesh clutches
• CPC Class Codes: F16D 23/06 and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
• CPC Class Codes: F16D 23/0612 the blocking mechanism comprising a radial pin in an axial slot with at least one branch
• CPC Class Codes: Y10T 74/19856 Laterally-spaced wheels
• CPC Class Codes: Y10T 74/19921 Separate rim

Abstract

A gear assembly having a body member with an end wall interconnecting a cylindrical inner wall and a cylindrical outer wall so as to define an annular cavity. The gear assembly also includes a gear ring having a hub segment mounted on and fixed to the outer wall of the body member, and a gear segment having external gear teeth. The gear assembly also includes a clutch ring that is secured to the inner and outer walls of the body member for enclosing the cavity. The clutch ring has clutch teeth adapted for engagement with a shift sleeve associated with a gearshift system.

Claims

1. A gear assembly adapted to be mounted on a shaft, comprising:

a drum having an inner cylindrical wall adapted to be mounted on the shaft, an outer cylindrical wall, and an end wall interconnecting said inner and outer walls;

a gear ring including a hub segment mounted on and fixed to said outer wall of said drum, and a gear segment having gear teeth formed thereon; and

a clutch ring having clutch teeth formed thereon, said clutch ring fixed to said inner and outer walls of said drum.

2. The gear assembly of claim 1 wherein said drum and said gear ring are made from different materials.

3. The gear assembly of claim 1 wherein said inner wall of said drum is rotatably supported on the shaft.

4. The gear assembly of claim 1 wherein said clutch ring has a plate segment fixed to said outer wall of said drum and a hub segment fixed to said inner wall of said drum, and wherein said clutch teeth are formed on an outer peripheral edge of said plate segment.

5. The gear assembly of claim 1 wherein said hub segment of said gear ring is welded to at least one of said end wall and said outer wall of said drum.

6. The gear assembly of claim 1 further comprising a thrust washer fixed to an outer surface of said end wall of said drum.

7. The gear assembly of claim 1 wherein said clutch ring has an annular recess which receives and locates a terminal end surface of said outer wall of said drum.

8. The gear assembly of claim 1 wherein said drum is stamped from a high strength low alloy steel.

9. A gear assembly adapted to be mounted on a shaft, comprising:

a drum having an inner cylindrical wall adapted to be mounted on the shaft, an outer cylindrical wall, and an end wall interconnecting said inner and outer walls said end wall including a thrust washer fixed to an outer surface thereof;

a gear ring including a hub segment mounted on and fixed to said outer wall of said drum, and a gear segment having gear teeth formed thereon; and

an end plate fixed to said inner and outer walls of said drum.

10. The gear assembly of claim 9 wherein said drum and said gear ring are made from different materials.

11. The gear assembly of claim 9 wherein said inner wall of said drum is rotatably supported on the shaft.

12. The gear assembly of claim 9 wherein said end plate is a clutch ring having clutch teeth formed thereon.

13. The gear assembly of claim 12 wherein said clutch ring has a plate segment fixed to said outer wall of said drum and a hub segment fixed to said inner wall of said drum, and wherein said clutch teeth are formed on an outer peripheral edge of said plate segment.

14. The gear assembly of claim 9 wherein said hub segment of said gear ring is welded to at least one of said end wall and said outer wall of said drum.

15. The gear assembly of claim 9 wherein said end plate has an annular recess which receives and locates a terminal end surface of said outer wall of said drum.

16. The gear assembly of claim 9 wherein said drum is stamped from a high strength low alloy steel .

17. A gear assembly adapted to be mounted on a shaft, comprising:

a drum having an inner cylindrical wall adapted to be mounted on the shaft, an outer cylindrical wall, and an end wall interconnecting said inner and outer walls;

a gear ring including a hub segment mounted on and fixed to said outer wall of said drum, and a gear segment having gear teeth formed thereon; and

an end plate fixed to said inner and outer walls of said drum said end plate including an annular recess which receives and locates a terminal end surface of said outer wall.

18. The gear assembly of claim 17 wherein said drum and said gear ring are made from different materials.

19. The gear assembly of claim 17 wherein said inner wall of said drum is rotatably supported on the shaft.

20. The gear assembly of claim 17 wherein said end plate is a clutch ring having clutch teeth formed thereon.

21. The gear assembly of claim 17 wherein said clutch ring has a plate segment fixed to said outer wall of said drum and a hub segment fixed to said inner wall of said drum, and wherein said clutch teeth are formed on an outer peripheral edge of said plate segment.

22. The gear assembly of claim 17 wherein said hub segment of said gear ring is welded to at least one of said end wall and said outer wall of said drum.

23. The gear assembly of claim 17 further comprising a thrust washer fixed to an outer surface of said end wall of said drum.

24. The gear assembly of claim 17 wherein said drum is stamped from a high strength low alloy steel.