CN203009633U - Third-fourth-gear synchronizer gear hub - Google Patents
Third-fourth-gear synchronizer gear hub Download PDFInfo
- Publication number
- CN203009633U CN203009633U CN 201320027022 CN201320027022U CN203009633U CN 203009633 U CN203009633 U CN 203009633U CN 201320027022 CN201320027022 CN 201320027022 CN 201320027022 U CN201320027022 U CN 201320027022U CN 203009633 U CN203009633 U CN 203009633U
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- gear
- slide block
- hub
- synchronizer
- tooth
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Abstract
The utility model discloses a third-fourth-gear synchronizer gear hub. The third-fourth-gear synchronizer gear hub comprises a plurality of outer racks and three slide block slots, which are formed in the outer circumference of the gear hub, and is characterized in that the cross sections of the outer racks are shaped like axially symmetric trapezoids; the tip diameters of the outer racks are equal to the root diameter of inner racks of a synchronizer gear sleeve matched with the synchronizer gear hub; the outer racks consist of wide gears and normal gears; the wide gears are arranged on the two sides of the slide block slots; and the gear thickness of the wide gears are increased by reducing the widths of the slide block slots. After the third-fourth-gear synchronizer gear hub is assembled with the gear sleeve, outside diameter centering of the gear hub can be achieved, the centering is accurate, the running is stable, and the assembly is more convenient; the contact of the outer racks of the gear hub and the inner racks of the gear sleeve is improved; the gear breakage when the synchronizer works is reduced; the strengths of the outer racks on the two sides of the slide block slots are improved; and the loading capacity of a contact surface of the gear hub and a slide block is strong.
Description
Technical field
The utility model relates to a kind of improvement invention of three fourth gear synchromesh gear hubs.
Background technique
Synchronizer gearshift not only have gearshift light, avoid impacting, eliminate noise, extend the advantages such as gear life, and can also make gearshift rapidly, improve power character, the economical and Security of automobile, therefore, the gearshift of Hyundai Motor, particularly car nearly all adopts this device.Synchronizer mainly is comprised of tooth cover, tooth hub, synchronous lock ring etc., and its feature is to rely on rubbing action to realize synchronously.Three fourth gear synchromesh gear hubs of prior art are flank centering after the assembling of it and tooth cover, and centering precision is relatively poor, exist certain unstablely during the synchronizer operation, assemble up simultaneously difficulty higher; Owing to being flank centering, comparatively speaking, contact conditions between the outer tooth bar of tooth hub and tooth cover inner rack is relatively poor, surface of contact is less, synchronizer work hour rack is easier to occur fracture, existing three fourth gear synchromesh gear hubs in addition, outer tooth bar and the outer tooth bar of other tooth hub of slide block slot both sides have same transverse tooth thickness, intensity a little less than, and the surface of contact bearing capacity between slide block also a little less than, the situation of wearing and tearing or slight crack easily appears.
Summary of the invention
In view of the problem that present known technology exists, the technical problems to be solved in the utility model is to be to provide a kind of accurate centering that realizes, and is easy to assembly, reduces the generation of tooth bar phenomenon of rupture, improves three fourth gear synchromesh gear hubs of tooth bar intensity outside slide block slot both sides.
The utility model is implemented by the following technical programs:
A kind of three fourth gear synchromesh gear hubs, be included in some outer tooth bar and three slide block slots that tooth hub excircle arranges, it is characterized in that: axisymmetricly trapezoidal of the cross section of described outer tooth bar, the outside diameter circle size of outer tooth bar is measure-alike with the inner rack Root diameter of supporting synchronizer gear sleeve with it.Described outer tooth bar is comprised of wide tooth and orthodont, and wide tooth arranges in the both sides of slide block slot, and the increase of wide tooth transverse tooth thickness obtains by the width dimensions that dwindles slide block slot.
After adopting technique scheme, at first, tooth hub diameter centering after the tooth hub has been realized assembling with the tooth cover, centering accurately makes stablely, and assembles more convenient, owing to being tooth hub diameter centering, overlap contacting between inner rack so can improve the outer tooth bar of tooth hub with tooth, improve contact conditions, improve area of contact, thereby reduce the generation of synchronizer work hour rack phenomenon of rupture; Secondly, the transverse tooth thickness of the outer tooth bar of tooth hub by increasing slide block slot both sides has improved the outer tooth bar intensity of slide block slot both sides, makes the surface of contact bearing capacity between tooth hub and slide block strong, can not occur wearing and tearing or the situation of slight crack.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural drawing of the present utility model.
Embodiment
as shown in the figure, three fourth gear synchromesh gear hubs of the present utility model, be included in some outer tooth bar and three slide block slots 3 that tooth hub excircle arranges, described outer tooth bar is comprised of wide tooth 2 and orthodont 1, wide tooth 2 arranges in the both sides of slide block slot 3, the increase of wide tooth 2 transverse tooth thickness obtains by the width dimensions that dwindles slide block slot 3, the cross section of described orthodont 1 trapezoidal (trapezoidal side is straightway) axisymmetricly, the inner rack Root diameter of the same supporting synchronizer gear sleeve with it of the outside diameter circle size of orthodont 1 and wide tooth 2 is measure-alike, after tooth hub and the assembling of tooth cover, can realize tooth hub diameter centering.
Three fourth gear synchromesh gear hubs of technique scheme, assembling is rear owing to having realized tooth hub diameter centering, so centering accurately, make stable, and assemble more convenient, can improve simultaneously the outer tooth bar of tooth hub and overlap contacting between inner rack with tooth, improve contact conditions, improve area of contact, thereby reduce the generation of synchronizer work hour rack phenomenon of rupture; The outer tooth bar intensity that next has improved the slide block slot both sides makes the surface of contact bearing capacity between tooth hub and slide block strong, can not occur wearing and tearing or the situation of slight crack.
Claims (2)
1. fourth gear synchromesh gear hub, be included in some outer tooth bar and three slide block slots that tooth hub excircle arranges, it is characterized in that: axisymmetricly trapezoidal of the cross section of described outer tooth bar, the outside diameter circle size of outer tooth bar is measure-alike with the inner rack Root diameter of supporting synchronizer gear sleeve with it.
2. a kind of three fourth gear synchromesh gear hubs as claimed in claim 1, it is characterized in that: described outer tooth bar is comprised of wide tooth and orthodont, and wide tooth arranges in the both sides of slide block slot, and the increase of wide tooth transverse tooth thickness obtains by the width dimensions that dwindles slide block slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320027022 CN203009633U (en) | 2013-01-18 | 2013-01-18 | Third-fourth-gear synchronizer gear hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320027022 CN203009633U (en) | 2013-01-18 | 2013-01-18 | Third-fourth-gear synchronizer gear hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009633U true CN203009633U (en) | 2013-06-19 |
Family
ID=48601230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320027022 Expired - Fee Related CN203009633U (en) | 2013-01-18 | 2013-01-18 | Third-fourth-gear synchronizer gear hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009633U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194530A (en) * | 2018-02-05 | 2018-06-22 | 浙江迅达工业科技有限公司 | A kind of automobile synchronizer |
| CN108286574A (en) * | 2018-02-05 | 2018-07-17 | 浙江迅达工业科技有限公司 | Automobile synchronizer |
-
2013
- 2013-01-18 CN CN 201320027022 patent/CN203009633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194530A (en) * | 2018-02-05 | 2018-06-22 | 浙江迅达工业科技有限公司 | A kind of automobile synchronizer |
| CN108286574A (en) * | 2018-02-05 | 2018-07-17 | 浙江迅达工业科技有限公司 | Automobile synchronizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20150118 |
|
| EXPY | Termination of patent right or utility model |