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CN-122014761-A - Synchronizer assembly

CN122014761ACN 122014761 ACN122014761 ACN 122014761ACN-122014761-A

Abstract

The application discloses a synchronizer assembly which comprises a tooth holder, a first gear engagement sleeve, a second gear engagement sleeve, a synchronizing ring and a sliding sleeve, wherein the first gear engagement sleeve and the second gear engagement sleeve are coaxially arranged on the same side of the tooth holder, the second gear engagement sleeve is arranged between the first gear engagement sleeve and the tooth holder, the synchronizing ring is coaxially arranged on the outer side between the first gear engagement sleeve and the second gear engagement sleeve, the sliding sleeve is coaxially arranged on the outer side of the tooth holder, part of the sliding sleeve is sleeved on the tooth holder, the other part of the sliding sleeve is arranged on the outer side of the synchronizing ring, and the sliding sleeve can move towards one of the first gear engagement sleeve and the second gear engagement sleeve on the synchronizing ring to finish gear shifting. The application can reduce the radial size of the synchronizer, has compact structure, is perfectly matched with the gearbox with narrow installation space and special layout, and meets the miniaturization design requirement of the gearbox.

Inventors

  • TIAN JUN
  • ZHOU JIYUAN
  • YANG YU

Assignees

  • 十堰同创传动技术有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. A synchronizer assembly, the synchronizer assembly comprising: A tooth holder; The first gear engagement sleeve and the second gear engagement sleeve are coaxially arranged on the same side of the tooth holder, and the second gear engagement sleeve is arranged between the first gear engagement sleeve and the tooth holder; the synchronous ring is coaxially arranged on the outer side between the first gear engagement sleeve and the second gear engagement sleeve; The sliding sleeve is coaxially arranged on the outer side of the tooth holder, a part of the sliding sleeve is sleeved on the tooth holder, the other part of the sliding sleeve is arranged on the outer side of the synchronizing ring, and the sliding sleeve can move towards one of the first gear engagement sleeve and the second gear engagement sleeve on the synchronizing ring so as to finish gear shifting.
  2. 2. The synchronizer assembly according to claim 1, wherein a first ring tooth is provided on one axial side of the outer peripheral surface of the synchronizing ring, the first ring tooth being adjacent to the first gear engagement sleeve, the first ring tooth including a plurality of first teeth arranged in a ring shape at intervals; the outer peripheral surface of the first gear engagement sleeve is provided with first engagement ring teeth, the first engagement ring teeth and the first ring teeth are oppositely arranged, and the first engagement ring teeth comprise a plurality of first engagement meshing teeth which are annular and are arranged at intervals; the inner wall of the sliding sleeve is provided with locking ring teeth, the locking ring teeth and the first ring teeth are oppositely arranged, and the locking ring teeth comprise a plurality of annular locking teeth which are arranged at intervals; In an initial state, the first joint ring gear, the first ring gear and the locking ring gear are sequentially close to the tooth holder; in the process of switching to the first gear, the sliding sleeve moves towards the direction of the first gear engagement sleeve, the locking teeth on the locking toothed ring sequentially penetrate through the first meshing teeth of the first ring teeth and the first engagement meshing teeth on the first engagement ring teeth, and the sliding sleeve is relatively locked with the synchronous ring and the first gear engagement sleeve.
  3. 3. The synchronizer assembly according to claim 2, wherein a side of the first tooth facing the tooth holder is V-shaped; the first engagement tooth is V-shaped towards one side of the tooth holder; The locking tooth is in a V shape on one side opposite to the tooth seat.
  4. 4. The synchronizer assembly according to claim 2, wherein a second ring tooth is arranged on the other axial side of the outer peripheral surface of the synchronizing ring, the second ring tooth is close to the second gear engagement sleeve, and the second ring tooth comprises a plurality of second meshing teeth which are annularly arranged at intervals; The outer peripheral surface of the second gear engagement sleeve is provided with second engagement ring teeth, the second engagement ring teeth and the second ring teeth are oppositely arranged, and the second engagement ring teeth comprise a plurality of second engagement meshing teeth which are annular and are arranged at intervals; in the initial state, the locking ring gear, the second ring gear and the second joint ring gear are sequentially close to the tooth holder; In the process of switching to the second gear, the sliding sleeve moves towards the direction of the second gear engagement sleeve, the locking teeth on the locking toothed ring sequentially penetrate through the second meshing teeth of the second ring teeth and the second engagement meshing teeth on the second engagement ring teeth, and the sliding sleeve is relatively locked with the synchronous ring and the second gear engagement sleeve.
  5. 5. The synchronizer assembly according to claim 4, wherein a side of the second tooth facing away from the tooth holder is V-shaped; The side of the second engagement tooth facing away from the tooth seat is V-shaped; The locking teeth are V-shaped towards one side of the tooth holder.
  6. 6. The synchronizer assembly according to claim 5, wherein the inner wall of the sliding sleeve is provided with a plurality of sliding grooves, the sliding grooves are arranged at intervals around the central axis of the sliding sleeve, and the length direction of the sliding grooves is arranged along the circumferential direction of the sliding sleeve; The outer peripheral surface of the synchronizing ring is provided with push blocks, the push blocks are arranged in one-to-one correspondence with the sliding grooves, the push blocks are arranged in the corresponding sliding grooves, and the push blocks can move in the sliding grooves along the circumferential direction of the sliding sleeve.
  7. 7. The synchronizer assembly according to any one of claims 1-6, wherein the synchronizer ring comprises a first ring body and a second ring body, the first ring body faces away from the tooth holder, the first ring body is sleeved on the first gear engagement sleeve, the second ring body faces towards the tooth holder, and the second ring body is sleeved on the first gear engagement sleeve.
  8. 8. The synchronizer assembly according to claim 7, wherein the first ring and the second ring are detachably connected.
  9. 9. The synchronizer assembly according to claim 8, wherein one of opposite sides of the first ring body and the second ring body is provided with a plurality of grooves, and the other side is provided with a plurality of protrusions, the protrusions and the grooves are arranged in a one-to-one correspondence, and the protrusions are inserted into the corresponding grooves.
  10. 10. The synchronizer assembly according to any one of claims 1-6, wherein the inner wall of the sliding sleeve is provided with a plurality of first splines, the outer circumferential surface of the tooth holder is provided with a plurality of second splines, the second splines are provided with limit stops, and the first splines can slide along the axial direction of the tooth holder between two adjacent second splines and limit the moving position of the sliding sleeve through the limit stops.

Description

Synchronizer assembly Technical Field The application belongs to the technical field of automobile parts, and particularly relates to a synchronizer assembly. Background The automobile synchronizer is a key component of a mechanical gear transmission, and the synchronizer plays a role of shifting and transmitting torque and is a key component in a gearbox. In the related art, the synchronizer comprises a synchronizing ring, a sliding sleeve, a first gear engagement sleeve, a second gear engagement sleeve and a tooth holder which are matched with each other for use, wherein the first gear engagement sleeve and the second gear engagement sleeve are respectively arranged on two sides of the tooth holder. The design scheme of the related technology can increase the overall axial length of the synchronizer assembly, so that the overall axial layout of the gearbox is lengthened, the design requirement of the gearbox with narrow axial installation space and special layout in the automobile chassis cannot be met, and the development trend of miniaturization and integration of the gearbox is limited. And the installation and movement space of the combined tooth sleeve and the synchronous ring are required to be reserved on two sides of the tooth seat, so that the layout space of other core components (such as an input shaft, an output shaft, a bearing and the like) in the gearbox can be compressed, and the design difficulty of the whole structure of the gearbox is increased Disclosure of Invention Based on the technical problems, the application provides a synchronizer assembly, which aims to solve the technical problems caused by the fact that a first gear engagement sleeve and a second gear engagement sleeve are respectively arranged on two sides of a tooth holder to a certain extent. The application is realized by the following technical scheme: The synchronizer assembly comprises a tooth seat, a first gear engagement sleeve and a second gear engagement sleeve which are coaxially arranged on the same side of the tooth seat, wherein the second gear engagement sleeve is arranged between the first gear engagement sleeve and the tooth seat, a synchronizing ring which is coaxially arranged on the outer side between the first gear engagement sleeve and the second gear engagement sleeve, a sliding sleeve which is coaxially arranged on the outer side of the tooth seat, a part of the sliding sleeve is sleeved on the tooth seat, the other part of the sliding sleeve is arranged on the outer side of the synchronizing ring, and the sliding sleeve can move towards one of the first gear engagement sleeve and the second gear engagement sleeve on the synchronizing ring to finish gear shifting. In some embodiments, a first ring tooth is arranged on one axial side of the outer peripheral surface of the synchronizing ring, the first ring tooth is close to the first gear engagement sleeve, the first ring tooth comprises a plurality of annular and spaced first engaging teeth, the first engagement ring tooth is arranged on the outer peripheral surface of the first gear engagement sleeve, the first engagement ring tooth and the first ring tooth are oppositely arranged, the first engagement ring tooth comprises a plurality of annular and spaced first engaging teeth, a locking ring tooth is arranged on the inner wall of the sliding sleeve, the locking ring tooth and the first ring tooth are oppositely arranged, the locking ring tooth comprises a plurality of annular and spaced locking teeth, in an initial state, the first engagement ring tooth, the first ring tooth and the locking ring tooth are sequentially close to the tooth holder, in the process of switching to the first gear, the sliding sleeve moves towards the first engagement sleeve, and the locking ring tooth on the locking ring sequentially penetrates through the first ring tooth and the first gear engagement sleeve to engage with the first gear engagement ring tooth and the first gear engagement sleeve. In some embodiments, the side of the first engagement tooth facing the tooth holder is V-shaped, and the side of the locking tooth facing away from the tooth holder is V-shaped. In some embodiments, a second ring tooth is arranged on the other axial side of the outer peripheral surface of the synchronizing ring, the second ring tooth is close to the second gear engagement sleeve, the second ring tooth comprises a plurality of second engaging teeth which are annular and are arranged at intervals, the second engaging ring tooth is arranged on the outer peripheral surface of the second gear engagement sleeve, the second engaging ring tooth and the second ring tooth are oppositely arranged, the second engaging ring tooth comprises a plurality of second engaging teeth which are annular and are arranged at intervals, the locking ring tooth, the second ring tooth and the second engaging ring tooth are sequentially close to the tooth holder in an initial state, the sliding sleeve moves