CN104728295B - Automobile synchronizer assembly - Google Patents
Automobile synchronizer assembly Download PDFInfo
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- CN104728295B CN104728295B CN201510161195.2A CN201510161195A CN104728295B CN 104728295 B CN104728295 B CN 104728295B CN 201510161195 A CN201510161195 A CN 201510161195A CN 104728295 B CN104728295 B CN 104728295B
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- transmission shaft
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Abstract
The application provides an automobile synchronizer assembly, which is improved in that a gear hub external spline meshed with a gear sleeve internal spline is arranged on the outer side wall of a gear hub body, one end surface of the gear hub body extends along an axis to form a gear hub extension part, and the outer side wall of the gear hub extension part, which is close to the end part, is provided with a transmission external spline matched with the power input end gear internal spline; the center of the gear hub is provided with a through hole along the axis direction, and the transmission shaft is sleeved in the through hole in a sliding manner. The automobile synchronizer assembly cancels spline engagement between the synchronizer gear hub and the transmission shaft, avoids impact between the gear hub and the transmission shaft during gear shifting and speed changing, greatly reduces the strength requirement of the transmission shaft, and can meet the requirement even if the diameter of the transmission shaft is smaller or the transmission shaft is a hollow shaft with thinner wall thickness; meanwhile, the transmission shaft is not easy to damage, the service life is prolonged, and the potential safety hazards of driving and the maintenance cost of vehicles are reduced.
Description
Technical Field
The application belongs to the field of automobile transmissions, and particularly relates to a synchronizer assembly in an automobile transmission.
Background
Existing automobile synchronization the working principle of the device is as follows: the gear sleeve is meshed with the gear hub, the gear hub and the transmission shaft through splines, the gear is sleeved on the transmission shaft through a bearing, when gear shifting is needed, the gear shifting fork dials the gear sleeve to the gear to be shifted, before the combined gear ring fixedly connected with the gear to be shifted is meshed with the gear sleeve, the synchronous cone ring is combined first, the rotation speed of the gear hub and the combined gear ring is quickly synchronized through friction between conical surfaces, namely, the synchronizer gear sleeve is quickly synchronized with the rotation speed of the gear to be shifted, the gear to be shifted is meshed with the synchronizer gear sleeve, the gear shifting process is completed, and power is transmitted to the transmission shaft by the gear to be shifted, so that the automobile is driven to continue running.
The synchronizer based on the working principle transfers power through spline engagement between the gear hub and the transmission shaft, so that the gear hub and the transmission shaft are required to bear larger impact when gear shifting and speed changing are carried out, the strength requirement on the transmission shaft is high, the transmission shaft is easy to damage, hidden danger is brought to driving safety, and the maintenance cost of a vehicle is increased.
Disclosure of Invention
Accordingly, the present application is directed to an automotive synchronizer assembly to solve the problems of the existing automotive synchronizers.
The technical scheme of the application is realized as follows:
the automobile synchronizer assembly comprises a tooth sleeve, a tooth hub, a combined gear ring and a synchronous conical ring, wherein an internal spline of the tooth sleeve is in meshed connection with an external spline of the tooth hub, the internal spline of the tooth sleeve is matched with the external spline of the combined gear ring and can be meshed with each other, the synchronous conical ring is positioned between the tooth hub and the combined gear ring, the external spline of the tooth hub is arranged on the outer side wall of a tooth hub body, one end face of the tooth hub body extends along an axis to form an external tooth hub portion, and a transmission external spline matched with the internal spline of a gear at a power input end is arranged on the outer side wall, close to the end, of the external tooth hub portion;
the center of the gear hub is provided with a through hole along the axis direction.
Further, the gear hub outer extension outer diameter is smaller than the gear hub body outer diameter.
Furthermore, the side wall of the through hole formed in the center of the gear hub is smooth, and the gear hub is sleeved on the transmission shaft through a bearing.
The synchronous cone ring comprises an inner cone ring, an outer cone ring and a double cone ring, wherein the inner cone ring is connected with the outer cone ring, the outer cone ring is connected with the gear hub body, and the double cone ring is connected with the combined gear ring;
the inner conical surface of the inner conical ring is matched with the inner conical surface of the double conical ring, and the inner conical surface of the outer conical ring is matched with the outer conical surface of the double conical ring.
Specifically, the connection between the outer cone ring and the gear hub body is realized by the following modes: a plurality of grooves are circumferentially and uniformly distributed on the outer side wall of the gear hub body, sliding blocks are clamped in the grooves, springs are arranged at the bottoms of the sliding blocks, one ends of the springs are fixed on the sliding blocks, and the other ends of the springs are abutted against the bottoms of the grooves;
the outer cone ring is provided with a notch matched with the sliding block, and the sliding block can be movably clamped in the notch.
Aiming at the defects of the existing automobile synchronizer, the automobile synchronizer assembly disclosed by the application is provided with a series of improvements aiming at the gear hub: the gear hub extends from the end face to form a gear hub extension part, and a transmission external spline matched with the internal spline of the power input end gear is arranged on the outer side wall of the gear hub extension part, which is close to the end part; meanwhile, a through hole is formed in the center of the gear hub along the axis direction, and the transmission shaft is sleeved in the through hole in a sliding manner. The prior power input is transmitted from the gear shifting gear to the synchronizer gear hub through the improvement, and then the power is transmitted out through the engagement of the synchronizer gear hub and the transmission shaft to be changed into the power input transmitted from the gear hub, and the power is transmitted to a gear shifting gear, and is meshed with an output end gear through the gear shifting gear, so that the power is finally transmitted.
The automobile synchronizer assembly cancels spline engagement between the synchronizer gear hub and the transmission shaft, avoids impact between the gear hub and the transmission shaft during gear shifting and speed changing, greatly reduces the strength requirement of the transmission shaft, and can meet the requirement even if the diameter of the transmission shaft is smaller or the transmission shaft is a hollow shaft with thinner wall thickness; meanwhile, the transmission shaft is not easy to damage, the service life is prolonged, and the potential safety hazards of driving and the maintenance cost of vehicles are reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is an axial cross-sectional view through the center of a slider and through the center axis of the present application
Reference numerals illustrate:
in the figure: 1. gear sleeve, 2, gear hub, 3, combined gear ring, 4, gear, 5, inner cone ring, 6, outer cone ring, 7, double cone ring, 8, slider, 9, spring, 10, bearing, 11, transmission shaft, 21, gear hub body, 22, transmission external spline, 23, gear hub extension.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The application will be described in detail below with reference to the drawings in connection with embodiments.
The automobile synchronizer assembly disclosed by the application, as shown in fig. 1, comprises a tooth sleeve 1, a tooth hub 2, a combined gear ring 3 and a synchronous cone ring, wherein an internal spline of the tooth sleeve 1 is in meshed connection with an external spline of the tooth hub 2, and the internal spline of the tooth sleeve 1 is matched with the external spline of the combined gear ring 3, so that the tooth sleeve 1 and the external spline can be meshed with each other, and the synchronous cone ring is positioned between the tooth hub 2 and the combined gear ring 3.
The synchronous cone ring comprises an inner cone ring 5, an outer cone ring 6 and a double cone ring 7, wherein the inner cone ring 5 is connected with the outer cone ring 6, the outer cone ring 6 is connected with the gear hub body 21, and the double cone ring 7 is connected with the combined gear ring 3; the outer conical surface of the inner conical ring 5 is matched with the inner conical surface of the double conical ring 7, the inner conical surface of the outer conical ring 6 is matched with the outer conical surface of the double conical ring 7, the synchronous process of the synchronizer depends on the friction between the two groups of conical surfaces, so that the rotating speeds between the gear hub and the combined gear ring 3 are the same, and the synchronization is achieved.
Furthermore, a plurality of grooves are circumferentially and uniformly distributed on the outer side wall of the gear hub body 21, a sliding block 8 is clamped in each groove, a spring 9 is arranged at the bottom of the sliding block 8, one end of the spring 9 is fixed on the sliding block 8, and the other end of the spring 9 is abutted against the bottom of each groove; the outer cone ring 6 is provided with a notch matched with the sliding block 8, the sliding block 8 can be movably clamped in the notch, and the sliding block 8 acts to drive the outer cone ring 6 and the gear hub 2 to synchronously rotate.
Compared with the prior art, the automobile synchronizer assembly is not provided with an improvement point and an innovation point, the shape and the structure specifically mentioned by the application are not limited to the automobile synchronizer assembly, and the prior technical characteristics capable of realizing the same or similar functions can be applied to the application.
The automobile synchronizer assembly is mainly improved and innovated aiming at the gear hub 2: the external spline of the gear hub 2 is arranged on the outer side wall of the gear hub body 21, one end surface of the gear hub body 21 extends along the axis to form a gear hub external extension part 23, and the outer side wall of the gear hub external extension part 23, which is close to the end part, is provided with a transmission external spline 22 matched with the internal spline of the gear at the power input end; the center of the gear hub 2 is provided with a through hole along the axial direction.
The outer diameter of the gear hub extension 23 is smaller than the outer diameter of the gear hub body 21.
The side wall of the through hole formed in the center of the gear hub 2 is smooth, no internal spline is arranged, and the gear hub 2 is sleeved on the transmission shaft 11 through the bearing 10.
A gear 4 is sleeved on a part between the external spline 22 of the gear hub extension part 23 and the gear hub body 21 through a bearing 10, a gear 4 is sleeved on a transmission shaft 11 at the other end of the gear hub 2 through the bearing 10, and the two gear gears 4 are fixedly connected with a combined gear ring 3 which can be meshed with the gear sleeve 1; the gear gears 4 are respectively meshed with the output end gears matched with the gear gears.
The working principle of the automobile synchronizer assembly is as follows: the engine output power is transmitted to a power input end gear which is not shown in fig. 1, the power input end gear drives the gear hub 2 to rotate through the engagement with the transmission external spline 22, when gear shifting is needed, the gear hub 2 and the gear sleeve 1 are driven by a gear shifting fork to be combined with one of the gear gears 4 positioned on two sides of the gear sleeve, the power is transmitted to the gear gears 4, the power is transmitted to an output end through an output end gear which is engaged with the gear gears 4, which is not shown in fig. 1, and finally the power is transmitted to the output end.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (2)
1. The utility model provides an automobile synchronizer assembly, includes tooth cover (1), tooth hub (2), combines ring gear (3) and synchronous conical ring, and tooth cover (1) internal spline is connected with tooth hub (2) external spline meshing, and tooth cover (1) internal spline and combination ring gear (3) external spline phase-match, can intermesh, and synchronous conical ring is located between tooth hub (2) and combination ring gear (3), its characterized in that: the external spline of the gear hub (2) is arranged on the outer side wall of the gear hub body (21), one end surface of the gear hub body (21) extends along the axis to form a gear hub extension (23), and the outer side wall of the gear hub extension (23) close to the end is provided with a transmission external spline (22) matched with the internal spline of the gear at the power input end;
a through hole is formed in the center of the gear hub (2) along the axial direction;
the outer diameter of the gear hub extension part (23) is smaller than the outer diameter of the gear hub body (21);
the side wall of a through hole formed in the center of the gear hub (2) is smooth, and the gear hub (2) is sleeved on the transmission shaft (11) through a bearing (10);
the synchronous conical ring comprises an inner conical ring (5), an outer conical ring (6) and a double conical ring (7), wherein the inner conical ring (5) is connected with the outer conical ring (6), the outer conical ring (6) is connected with the gear hub body (21), and the double conical ring (7) is connected with the combined gear ring (3);
the outer conical surface of the inner conical ring (5) is matched with the inner conical surface of the double conical ring (7), and the inner conical surface of the outer conical ring (6) is matched with the outer conical surface of the double conical ring (7).
2. The automotive synchronizer assembly according to claim 1, wherein: a plurality of grooves are circumferentially and uniformly distributed on the outer side wall of the gear hub body (21), sliding blocks (8) are clamped in the grooves, springs (9) are arranged at the bottoms of the sliding blocks (8), one ends of the springs (9) are fixed on the sliding blocks (8), and the other ends of the springs (9) are abutted against the bottoms of the grooves;
the outer cone ring (6) is provided with a notch matched with the sliding block (8), and the sliding block (8) can be movably clamped in the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161195.2A CN104728295B (en) | 2015-04-07 | 2015-04-07 | Automobile synchronizer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161195.2A CN104728295B (en) | 2015-04-07 | 2015-04-07 | Automobile synchronizer assembly |
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| Publication Number | Publication Date |
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| CN104728295A CN104728295A (en) | 2015-06-24 |
| CN104728295B true CN104728295B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510161195.2A Active CN104728295B (en) | 2015-04-07 | 2015-04-07 | Automobile synchronizer assembly |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339336A (en) * | 2016-12-30 | 2017-11-10 | 江苏持华轴承有限公司 | Synchronous ring and bicyclic single conical surface synchronizer |
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| JP2005344849A (en) * | 2004-06-03 | 2005-12-15 | Toyota Motor Corp | Synchronizing device of clutch for transmission |
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| CN201606478U (en) * | 2009-09-30 | 2010-10-13 | 赣州经纬汽车零部件有限公司 | Copper ring outer-cone synchronizer |
| CN202790201U (en) * | 2012-08-30 | 2013-03-13 | 浙江吉利汽车研究院有限公司杭州分公司 | Limit structure of automobile unilateral synchronizer |
| CN203009629U (en) * | 2012-11-16 | 2013-06-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Baffle type synchronizer |
| US20130333998A1 (en) * | 2012-06-18 | 2013-12-19 | Sulzer Friction Systems (Germany) Gmbh | Friction ring, synchronizer unit, and gear changing transmission for a vehicle |
| CN103527665A (en) * | 2013-10-28 | 2014-01-22 | 武汉理工大学 | Double-circumference synchronizer with springs |
| CN103899670A (en) * | 2014-02-27 | 2014-07-02 | 天津天海同步科技股份有限公司 | Transmission synchronizer |
| CN204140688U (en) * | 2014-08-29 | 2015-02-04 | 长城汽车股份有限公司 | A kind of automotive transmission double-cone synchronizer |
| CN204647053U (en) * | 2015-04-07 | 2015-09-16 | 天津天海同步科技股份有限公司 | Automobile synchronizer assembly |
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2015
- 2015-04-07 CN CN201510161195.2A patent/CN104728295B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005344849A (en) * | 2004-06-03 | 2005-12-15 | Toyota Motor Corp | Synchronizing device of clutch for transmission |
| CN1908454A (en) * | 2005-08-05 | 2007-02-07 | 协和合金株式会社 | Synchronizer for transmission case |
| CN200968406Y (en) * | 2006-11-13 | 2007-10-31 | 温岭市正田汽车变速器有限公司 | Three conical surface type synchronization device of Vehicle manual speed-changer |
| CN200989436Y (en) * | 2006-12-29 | 2007-12-12 | 天津天海同步器有限公司 | A double-conical surface synchronizer |
| CN201606478U (en) * | 2009-09-30 | 2010-10-13 | 赣州经纬汽车零部件有限公司 | Copper ring outer-cone synchronizer |
| US20130333998A1 (en) * | 2012-06-18 | 2013-12-19 | Sulzer Friction Systems (Germany) Gmbh | Friction ring, synchronizer unit, and gear changing transmission for a vehicle |
| CN202790201U (en) * | 2012-08-30 | 2013-03-13 | 浙江吉利汽车研究院有限公司杭州分公司 | Limit structure of automobile unilateral synchronizer |
| CN203009629U (en) * | 2012-11-16 | 2013-06-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Baffle type synchronizer |
| CN103527665A (en) * | 2013-10-28 | 2014-01-22 | 武汉理工大学 | Double-circumference synchronizer with springs |
| CN103899670A (en) * | 2014-02-27 | 2014-07-02 | 天津天海同步科技股份有限公司 | Transmission synchronizer |
| CN204140688U (en) * | 2014-08-29 | 2015-02-04 | 长城汽车股份有限公司 | A kind of automotive transmission double-cone synchronizer |
| CN204647053U (en) * | 2015-04-07 | 2015-09-16 | 天津天海同步科技股份有限公司 | Automobile synchronizer assembly |
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| Publication number | Publication date |
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| CN104728295A (en) | 2015-06-24 |
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Address after: 301600 Jinhai Road, Jinghai Development Zone, Jinghai County, Tianjin 5 Applicant after: TIANJIN TANHAS TECHNOLOGY Co.,Ltd. Address before: 301600 Jinhai Road, Jinghai Development Zone, Jinghai County, Tianjin 5 Applicant before: TIANJIN TANHAS TECHNOLOGY Co.,Ltd. |
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