Search

CN-224229127-U - Synchronizer structure of gearbox

CN224229127UCN 224229127 UCN224229127 UCN 224229127UCN-224229127-U

Abstract

The utility model provides a synchronizer structure of a gearbox, and belongs to the technical field of gearboxes. The buffer device solves the problem that the buffer is insufficient due to the single spring structure in the prior art. The utility model comprises a first synchronizing ring, a second synchronizing ring, a joint gear sleeve, a first spring ring, a second spring ring, a synchronizing gear and a synchronizing slide block, wherein the lower ends of the outer tooth surfaces extending out of the two sides of the joint gear sleeve are formed into limiting cambered surfaces, the periphery of the joint gear sleeve is provided with a slide block groove, the synchronizing slide block is arranged in the slide block groove, the two sides of the synchronizing slide block are provided with limiting convex bodies, the first spring ring and the second spring ring are of annular structures with openings, the first spring ring and the second spring ring are respectively attached to the lower ends of the limiting convex bodies on the two sides of the synchronizing slide block, the first spring ring and the second spring ring are respectively attached to the end surfaces on the two sides of the joint gear sleeve, and the first synchronizing ring and the second synchronizing ring are respectively inserted into the first limiting groove and the second limiting groove. The utility model has the advantages of stable structure and strong buffering capacity.

Inventors

  • JIN QIANCHENG

Assignees

  • 浙江瑞发机械有限公司

Dates

Publication Date
20260512
Application Date
20250722

Claims (6)

  1. 1. The synchronizer structure of the gearbox comprises a first synchronizing ring (1), a second synchronizing ring (2), a joint gear sleeve (3), a first spring ring (4), a second spring ring (5), a synchronizing gear (6) and a synchronizing slide block (7), and is characterized in that the joint gear sleeve (3) is of a ring body structure, an external tooth surface (31) is arranged outside the joint gear sleeve (3), the external tooth surface (31) extends out of two sides of the joint gear sleeve (3), the lower ends of the external tooth surface (31) extending out of two sides of the joint gear sleeve (3) are formed into limiting cambered surfaces (32), the periphery of the joint gear sleeve (3) is provided with a plurality of slide block grooves (33), the number of the synchronizing slide blocks (7) is the same as that of the slide block grooves (33), the synchronizing slide blocks (7) are arranged in the slide block grooves (33), limiting convex bodies (71) are formed on two sides of the synchronizing slide blocks (7), the first spring ring (4) and the second spring ring (5) are of a ring structure with openings, the first spring ring (4) and the second spring ring (5) are respectively attached to the lower end surfaces (71) of the synchronizing slide blocks (7) which are attached to the two side surfaces (3), a first limit groove (34) and a second limit groove (35) are respectively formed between the first spring ring (4) and the second spring ring (5) and limit cambered surfaces (32) on two sides of the joint gear sleeve (3), and the first synchronizing ring (1) and the second synchronizing ring (2) are respectively inserted into the first limit groove (34) and the second limit groove (35).
  2. 2. A synchronizer structure of a gearbox according to claim 1, characterized in that the synchronizing gear (6) is of an annular structure and an inner tooth surface (61) is formed inside the synchronizing gear (6), the synchronizing gear (6) is sleeved outside the joint gear sleeve (3) and the inner tooth surface (61) is in meshed connection with the outer tooth surface (31).
  3. 3. The synchronizer structure of the gearbox according to claim 1, wherein the first synchronizing ring (1) and the second synchronizing ring (2) are respectively provided with a first groove (11) and a second groove (21), and two sides of the synchronizing slide block (7) are respectively arranged in the first groove (11) and the second groove (21).
  4. 4. A synchronizer structure for a transmission according to claim 1, wherein the synchronizing gear (6) is formed with a fork groove (62) at its outer periphery.
  5. 5. The synchronizer structure of the gearbox according to claim 1, wherein the ends of the first spring ring (4) and the second spring ring (5) are respectively provided with a first fixing convex body (41) and a second fixing convex body (51), and the first fixing convex body (41) and the second fixing convex body (51) are respectively connected with two sides of the synchronous sliding block (7).
  6. 6. The synchronizer structure of a transmission according to claim 2, wherein the inner tooth surface (61) is provided with an engagement groove (63), an engagement protrusion (72) is formed on the outer surface of the synchronizing slider (7), and the engagement protrusion (72) is engaged with the engagement groove (63).

Description

Synchronizer structure of gearbox Technical Field The utility model belongs to the technical field of gearboxes, and relates to a synchronizer structure of a gearbox. Background The working principle of the synchronizer is that the friction force between the synchronizing ring and the driven gear enables the rotation speed of the driven gear to be consistent with that of the output shaft, and then the engaging sleeve is slid to be engaged with the side gear ring of the driven gear, so that gear shifting work is completed. The chinese patent with the patent publication number CN206190768U discloses a synchronizer and a gearbox, which comprises a tooth sleeve, a tooth hub, an outer cone ring provided with a first inner cone, a middle cone ring provided with a first outer cone and a second inner cone, an inner cone ring provided with a second outer cone, a spring and a push block, wherein the first inner cone can be matched with the first outer cone, the second inner cone can be matched with the second outer cone, a third outer cone is arranged on the cone, a third inner cone and a claw are further arranged on the inner cone ring, the third inner cone can be matched with the third outer cone, a boss is further arranged on the outer cone ring, a clearance part is arranged on the tooth hub, the clearance part comprises a through groove and/or a through hole which are axially formed along the tooth hub, and the boss and the claw extend into the clearance part. In the synchronizer and the gearbox provided by the patent, a single spring structure is adopted, and when the synchronizer is subjected to external abnormal interference in the gear shifting process, the single spring structure is difficult to provide enough buffering and compensation. Disclosure of utility model The present utility model has been made keeping in mind the above problems occurring in the prior art, and an object of the present utility model is to provide a synchronizer structure for a transmission. The synchronizer structure of the gearbox comprises a first synchronizing ring, a second synchronizing ring, a joint gear sleeve, a first spring ring, a second spring ring, a synchronizing gear and a synchronizing sliding block, wherein the joint gear sleeve is of a ring body structure, external tooth surfaces are arranged outside the joint gear sleeve, the external tooth surfaces extend out of two sides of the joint gear sleeve, the lower ends of the external tooth surfaces extending out of two sides of the joint gear sleeve are formed into limiting cambered surfaces, the periphery of the joint gear sleeve is provided with a plurality of sliding block grooves, the number of the synchronizing sliding blocks is the same as that of the sliding block grooves, the synchronizing sliding blocks are arranged in the sliding block grooves, limiting convex bodies are formed on two sides of the synchronizing sliding block, the first spring ring and the second spring ring are of open annular structures and are respectively attached to the lower ends of the limiting convex bodies on two sides of the synchronizing sliding block, the first spring ring and the second spring ring are respectively attached to end faces on two sides of the joint gear sleeve, a first limiting groove and a second limiting groove are respectively formed between the first spring ring and the limiting cambered surfaces on two sides of the joint gear sleeve, the first spring ring and the second spring ring and the limiting convex bodies are respectively inserted into the first synchronizing ring and the second limiting groove. In the synchronizer structure of the gearbox, the synchronizing gear is of an annular structure, an inner tooth surface is formed inside the synchronizing gear, the synchronizing gear is sleeved outside the joint gear sleeve, and the inner tooth surface is in meshed connection with the outer tooth surface. In the above-mentioned synchronizer structure of a gearbox, a first groove and a second groove are respectively provided in the first synchronizing ring and the second synchronizing ring, and two sides of the synchronizing slide block are respectively provided in the first groove and the second groove. In the synchronizer structure of the gearbox, a shifting fork groove is formed on the periphery of the synchronizing gear. In the synchronizer structure of the gearbox, the first fixed convex body and the second fixed convex body are respectively arranged at the end parts of the first spring ring and the second spring ring, and the first fixed convex body and the second fixed convex body are respectively connected with two sides of the synchronous sliding block. In the synchronizer structure of the gearbox, the inner tooth surface is provided with the engagement groove, the outer surface of the synchronous slide block is provided with the engagement convex strip, and the engagement convex strip is in engagement connection with the engagement groove. Compared with t