Synchronizing device for transmission assemblies and having friction-coupled assemblies

• US 5,343,993 A
• Filed: 05/26/1993
• Issued: 09/06/1994
• Est. Priority Date: 04/10/1991
• Status: Expired due to Term

• Current Assignee: Hoerbiger Antriebstechnik GmbH (Hoerbiger-Stiftung)
• Original Assignee: Hoerbiger & Company
• Inventors: Soffa, Franz
• Primary Examiner(s): Pitts, Andrea
• Application Number:
  US08/067,395
• Time in Patent Office: 468 Days
• Field of Search: 192/53 F, 192/107 M
• US Class Current: 192/53.34
• CPC Class Codes: F16D 2023/0618 Details of blocking mechanism comprising a helical spring loaded element, e.g. ball
• 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

Abstract

In a synchronizing device for transmission assemblies, a gear shaft includes a detent mounted thereon in a twist-proof manner and at least one speed wheel cooperating with the detent and rotatable on the gear shaft by movement of a sliding sleeve. A clutch is connected in a shape-locking manner to the speed wheel and a synchronizing ring enabling engagable and disengagable friction coupling of the clutch with the detent. The synchronizing ring including a conically-shaped coupling surface and the friction coupling including a friction ring body subassembly with a conical friction surface having a sintered-on friction lining and cams, and is connected in a shape-locking manner by the cams to the clutch and interacts by means of the friction lining with the conical coupling surface.

Claims

1. Synchronizing device for transmission assemblies, comprising:

a gear shaft having a detent mounted thereon in a twist-proof manner;

a sliding sleeve and at least one speed wheel rotatable on said gear shaft to be interconnected in a twist-proof manner with said detent by movement of said sliding sleeve;

a clutch connected in a shape-locking manner to said at least one speed wheel;

a friction ring body assembly comprising a friction ring including a conically-shaped coupling surface having a sintered-on friction lining and cams for providing engageable and disengageable friction coupling of said clutch with said detent by engagement of said cams with said clutch, said friction ring body assembly further comprising at least one synchronizing ring engageable with said sliding sleeve and including a conically-shaped coupling surface engageable with said friction lining with movement of said sliding sleeve, and wherein said clutch or the speed wheel includes a frictionless surface and recesses for the coupling connection with said detent and the shape-locking accomodation of said cams of said friction ring body assembly.

2. The synchronizing device according to claim 1, wherein said friction lining is a scatter-sintering friction lining.