CN107237842B - Anti-gear-off high-speed synchronizer for automobile - Google Patents
Anti-gear-off high-speed synchronizer for automobile Download PDFInfo
- Publication number
- CN107237842B CN107237842B CN201710509781.0A CN201710509781A CN107237842B CN 107237842 B CN107237842 B CN 107237842B CN 201710509781 A CN201710509781 A CN 201710509781A CN 107237842 B CN107237842 B CN 107237842B
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- self
- locking
- synchronizer
- locking hole
- gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3408—Locking or disabling mechanisms the locking mechanism being moved by the final actuating mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses an automobile anti-gear-off high-speed synchronizer, and relates to the technical field of automobile manufacturing; the synchronizer gear sleeve and the synchronizer gear hub are arranged between the synchronizer gear sleeve and the synchronizer gear hub, the spline sleeve is matched with the synchronizer gear sleeve and the synchronizer gear hub through a groove and a bump respectively, and locking is carried out through a self-locking hole and a self-locking steel ball which are arranged on the parts, so that two processes of synchronizer combination and synchronizer locking are completed. The invention can solve the problem that the synchronizer is easy to be out of gear when the automobile runs at high speed or passes through a bumpy road section at present.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to an automobile anti-gear-off synchronizer.
Background
With the rapid development of the market automobile market and the continuous release of SUVs or large-displacement automobiles, the traditional transmission is easy to have out-of-gear faults when running at high speed under the condition of large torque or crossing a bumpy road section, and particularly the safety faults of the vehicle are easily caused by the gear withdrawal under the condition of high-speed running; at present, part of synchronizers also have an anti-disengagement structure, for example, in the patent, an anti-disengagement self-locking device of a manual transmission and a synchronizer (201420063643.6) are provided with a compressible steel ball on the end surface of a synchronizer gear sleeve to prevent the synchronizer gear sleeve from disengaging, but if the synchronizer gear sleeve is subjected to larger axial impact of a gear, the synchronizer gear sleeve can not be locked and disengaged due to limited elastic force; similarly, another patent discloses an anti-gear-off seat synchronizer (CN 201410142135.1) which can normally prevent the gear sleeve from gear-off through the component force of the back taper, but can still risk gear-off in the case of vehicle bump sliding or gear sleeve taper abrasion.
Disclosure of Invention
The invention aims to provide an automobile anti-gear-off high-speed synchronizer which can solve the problem that the existing synchronizer is easy to be out of gear when an automobile runs at a high speed or passes through a bumpy road section.
In order to solve the problems, the invention adopts the technical scheme that: the synchronizer gear sleeve comprises a synchronizer gear sleeve and a synchronizer gear hub, wherein the inner ring of the synchronizer gear sleeve is provided with more than two first grooves and first self-locking holes which are axially arranged; a spline housing is arranged between the synchronizer gear sleeve and the synchronizer gear hub, an inner ring of the spline housing is provided with an inner gear ring and is uniformly distributed with axial second grooves, an outer ring of the spline housing is provided with a first boss corresponding to the first groove in position and a second self-locking hole corresponding to the first self-locking hole in position, and first self-locking steel balls are arranged in the first self-locking hole and the second self-locking hole; the outer ring of the synchronizer gear hub is provided with outer teeth corresponding to the inner gear ring and is uniformly provided with more than two third grooves, radial movable sliding blocks are arranged in the third grooves, the outer ring of the synchronizer gear hub is also provided with a second boss corresponding to the second grooves in position, the second boss is provided with a third self-locking hole, and a second self-locking steel ball and a self-locking spring are arranged in the third self-locking hole; the diameters of the first self-locking hole, the second self-locking hole and the third self-locking hole are equal.
In the above technical solution, a further solution may be: the third self-locking hole is formed in the middle of the outer ring of the synchronizer gear hub, and is a blind hole; the second self-locking hole is arranged in the second groove and is a through hole; the first self-locking hole is a hemispherical blind hole; the diameters of the first self-locking steel ball and the second self-locking steel ball are equal.
And further: and a slide block spring is arranged below the movable slide block.
And further: flanges are arranged on two sides of the synchronizer gear sleeve.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the spline sleeve is additionally arranged between the synchronizer gear sleeve and the synchronizer gear hub, the groove and the corresponding boss are sequentially arranged on the synchronizer gear sleeve, the spline sleeve and the synchronizer gear hub, so that the parts can axially slide, and meanwhile, the synchronizer gear sleeve, the spline sleeve and the synchronizer gear hub are respectively provided with the self-locking hole, the self-locking steel ball, the spring and the like, so that the purpose of preventing gear hopout when an automobile is in a high-speed gear is realized;
2. the gear shifting process is divided into two processes of synchronizer combination and synchronizer locking, and the synchronizer gear sleeve is firmly fixed on the spline sleeve and is also fixed on the synchronizer gear hub through two self-locking steel balls penetrating through the synchronizer gear sleeve, the spline sleeve and the synchronizer gear hub, so that the spline sleeve cannot axially move to be out of gear;
3. the invention has low manufacturing cost and simple structure, and can be popularized and used on synchronizers of manual and automatic transmissions.
Drawings
Fig. 1 is an exploded view of the present invention.
FIG. 2 is a schematic representation of the synchronizer of the present invention in a neutral position.
FIG. 3 is a schematic view of the synchronizer of the present invention in the 5 th position.
FIG. 4 is a schematic of the post-shift position of the synchronizer of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
the anti-gear-off high-speed synchronizer for the automobile as shown in fig. 1 comprises a synchronizer gear sleeve 1 and a synchronizer gear hub 7, wherein more than two first grooves 101 and first self-locking holes 102 which are axially arranged are formed in an inner ring of the synchronizer gear sleeve 1, and in the embodiment, the number of the first grooves 101 is three, and the first grooves are arranged in an angle of 120 degrees; the spline housing 2 is arranged between the synchronizer gear sleeve 1 and the synchronizer gear hub 7, an inner ring of the spline housing 2 is provided with an inner gear ring and is uniformly provided with axial second grooves 203, an outer ring of the spline housing 2 is provided with a first boss 201 corresponding to the first groove 101, and the spline housing 2 can axially move relative to the synchronizer gear sleeve 1 through the matching of the first boss 201 and the first groove 101; the outer ring of the spline housing 2 is also provided with a second self-locking hole 202 corresponding to the first self-locking hole 102, the second self-locking hole 702 is arranged in the second groove 203, and the diameters of the first self-locking hole 101 and the second self-locking hole 202 are equal; when the synchronizer gear sleeve 1 moves leftwards to a certain position, the first self-locking hole 101 and the second self-locking hole 202 are overlapped; a first self-locking steel ball 3 is arranged in the first self-locking hole 102 and the second self-locking hole 202, wherein the first self-locking hole 101 is a hemispherical blind hole, and the radius of the hemispherical blind hole is equal to that of the first self-locking hole 3; the second self-locking hole 202 is a through hole, and the diameter of the through hole is slightly larger than that of the first self-locking steel ball 3; the outer ring of the synchronizer hub 7 is provided with outer teeth corresponding to the inner gear ring of the spline housing 2 and is uniformly provided with more than two third grooves 703, in the embodiment, the number of the third grooves 703 is three, and the third grooves are arranged at 120 degrees; a radial movable sliding block 6 is arranged in the third groove 703, and a sliding block spring is arranged below the movable sliding block 6; the outer ring of the synchronizer gear hub 7 is also provided with a second boss 701 corresponding to the second groove 203 in position, the second boss 701 is provided with a third self-locking hole 702, a second self-locking steel ball 4 and a self-locking spring 5 are arranged in the third self-locking hole 702, the third self-locking hole 702 is arranged in the middle of the outer ring of the synchronizer gear hub 7 and is a blind hole, and the diameter of the blind hole is slightly larger than that of the second self-locking steel ball 4; the diameters of the first self-locking hole 102, the second self-locking hole 202 and the third self-locking hole 702 are equal, and the axes of three holes formed in proper positions are overlapped; flanges 103 are arranged on two sides of the synchronizer gear sleeve 1.
The working principle of the invention is as follows: this patent is that the process of shifting gears to the car divide into two processes of synchronizer combination and synchronizer locking, wherein advances the shelves process: when an automobile is in a low gear, the high-speed synchronizer is located at a neutral position as shown in fig. 2, at the moment, the synchronizer gear sleeve 1, the spline sleeve 2 and the synchronizer gear hub 7 are basically parallel and level, the first self-locking steel ball 3 is located between the first self-locking hole 102 and the second self-locking hole 202, and the synchronizer gear sleeve 1 and the spline sleeve 2 are connected into a whole through the first self-locking steel ball 3, so that the synchronizer gear sleeve 1 and the spline sleeve 2 cannot slide relatively; the second self-locking steel ball 4 compresses the self-locking spring 5 to be arranged in the third self-locking hole 702 and is propped against the inner side of the spline housing 2; when the automobile is engaged in the 5-gear, a transmission shifting fork (not shown) drives a synchronizer gear sleeve 1 to slide leftwards, under the action of a self-locking steel ball 3, the synchronizer gear sleeve 1 drives a self-locking steel ball 3 and the synchronizer gear sleeve 1 to axially slide, when a first self-locking steel ball 3 slides to the upper part of a second self-locking steel ball 4, a spline of a spline sleeve 2 is combined with a high-speed gear combination tooth in place, and the transmission finishes the five-gear shifting process; the transmission shifting fork continues to move under the action of a shifting handle, the synchronizer gear sleeve 1 also continues to move leftwards under the action of the transmission shifting fork, the spline sleeve 2 is already combined with a fifth-gear combined tooth in place and cannot axially continue to move, the first self-locking steel ball 3 is separated from the first self-locking hole 102, is completely pressed into the second self-locking hole 202 and is partially pressed into the third self-locking hole 702, the second self-locking steel ball 4 is pressed below the first self-locking steel ball 3 until the transmission shifting fork axially moves to a fixed shifting stroke, and as shown in fig. 4, the first self-locking steel ball 3 is positioned between the spline sleeve 2 and the synchronizer gear hub 7, so that the spline sleeve 2 and the synchronizer gear hub 7 are locked, and the synchronizer locking process is completed; in the running process of an automobile, the spline inside the spline housing 2 plays a main role in transmitting torque and is easy to be stressed to shift out, and under the locking condition of the synchronizer, the spline housing 2 cannot axially move to cause the occurrence of gear shifting failure even if being subjected to large axial force.
A gear-shifting process: the transmission shifting fork drives the synchronizer gear sleeve 1 to move axially rightwards, when the first self-locking hole 102 on the inner side of the synchronizer gear sleeve 1 moves to be right above the second self-locking hole 202 of the spline sleeve 2, the first self-locking steel ball 3 and the second self-locking steel ball 4 are bounced up by the self-locking spring 5 to jack into the first self-locking hole 102 on the synchronizer gear sleeve 1, and as shown in fig. 3, the spline sleeve 2 and the synchronizer gear hub 7 are unlocked at the moment; the transmission shifting fork continuously drives the synchronizer gear sleeve 1 to move axially rightwards, under the pushing of the flange 103 of the synchronizer gear sleeve 1, the spline sleeve 2 moves rightwards until the spline in the spline sleeve 2 is completely separated from the combined teeth of the high-speed gear, and the gear withdrawing process is completed.
Claims (3)
1. The utility model provides a high-speed synchronous ware of car anticreep fender, includes synchronous ware tooth cover and synchronous ware tooth hub, its characterized in that: the inner ring of the synchronizer gear sleeve is provided with more than two first grooves and first self-locking holes which are axially arranged; a spline housing is arranged between the synchronizer gear sleeve and the synchronizer gear hub, an inner ring of the spline housing is provided with an inner gear ring and is uniformly provided with axial second grooves, an outer ring of the spline housing is provided with a first boss corresponding to the first groove and a second self-locking hole corresponding to the first self-locking hole, and first self-locking steel balls are arranged in the first self-locking hole and the second self-locking hole; the outer ring of the synchronizer gear hub is provided with outer teeth corresponding to the inner gear ring and is uniformly provided with more than two third grooves, radial movable sliding blocks are arranged in the third grooves, the outer ring of the synchronizer gear hub is also provided with a second boss corresponding to the second grooves in position, the second boss is provided with a third self-locking hole, and a second self-locking steel ball and a self-locking spring are arranged in the third self-locking hole; the diameters of the first self-locking hole, the second self-locking hole and the third self-locking hole are equal;
the third self-locking hole is formed in the middle of the outer ring of the synchronizer gear hub, and the third self-locking hole is a blind hole; the second self-locking hole is arranged in the second groove and is a through hole; the first self-locking hole is a hemispherical blind hole; the diameters of the first self-locking steel ball and the second self-locking steel ball are equal;
the first self-locking steel ball is separated from the first self-locking hole, is completely pressed into the second self-locking hole and is partially pressed into the third self-locking hole, and the first self-locking steel ball is positioned between the spline housing and the synchronizer gear hub to lock the spline housing and the synchronizer gear hub, so that the locking process of the synchronizer is completed.
2. The automotive anti-derailment high-speed synchronizer according to claim 1, wherein: and a slide block spring is arranged below the movable slide block.
3. The automotive anti-derailment high-speed synchronizer according to claim 1 or 2, wherein: flanges are arranged on two sides of the synchronizer gear sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509781.0A CN107237842B (en) | 2017-06-28 | 2017-06-28 | Anti-gear-off high-speed synchronizer for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509781.0A CN107237842B (en) | 2017-06-28 | 2017-06-28 | Anti-gear-off high-speed synchronizer for automobile |
Publications (2)
| Publication Number | Publication Date |
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| CN107237842A CN107237842A (en) | 2017-10-10 |
| CN107237842B true CN107237842B (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710509781.0A Active CN107237842B (en) | 2017-06-28 | 2017-06-28 | Anti-gear-off high-speed synchronizer for automobile |
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