CN102506159A - Gear selection and shift system for gear box - Google Patents
Gear selection and shift system for gear box Download PDFInfo
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- CN102506159A CN102506159A CN2011103202641A CN201110320264A CN102506159A CN 102506159 A CN102506159 A CN 102506159A CN 2011103202641 A CN2011103202641 A CN 2011103202641A CN 201110320264 A CN201110320264 A CN 201110320264A CN 102506159 A CN102506159 A CN 102506159A
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Abstract
The invention discloses a gear selection and shift system for a gear box in the technical field of automobile gear boxes. The gear selection and shift system comprises a gear selection and shift shaft arranged in a gear box shell, a gear selection and shift head sleeved on the gear selection and shift shaft and four groups of gear shift fork mechanisms sequentially connected with the gear selection and shift head, wherein each group of gear shift fork mechanism comprises a shift fork shaft, a gear shift block and a shift fork, and the gear shift block and the shift fork are connected with the shift fork shaft; and the four groups of gear shift blocks are contacted with the gear selection and shift head respectively. Compared with the prior art, the gear selection and shift system has the advantages that: a reverse gear lock mechanism is simplified, a gear selection and shift interlocking function and a reverse gear insurance function are realized, the rotating speed of an input shaft is reduced, and the speed of the input shaft is increased; therefore, a reverse gear can be meshed stably and smoothly.
Description
Technical field
What the present invention relates to is a kind of mechanical device field, specifically is that a kind of speed changer that saves the reverse gear lock device and can avoid the reverse gear gearshift to beat tooth selects shifting system.
Background technique
Along with development of science and technology, the progress of society, automobile has become the traffic tool indispensable in people's daily life and the industrial and agricultural production.The automobile industry technology also becomes the field that the Department of Science and Technology gives special assistance in " 12 " planning, is promptly strided forward to automobile power by automobile superpower, has the practical capability of independent innovation, and the international breakthrough of kernel component realizes real industrial upgrading.Therefore, how through science and technology innovate realize this goal just become at present and the development of following automobile industry in the core topic that must emphasis solves.
People to automobile require increasingly high, not only to outward appearance, performance, etc. the aspect higher standard has been proposed, and automobile selected the requirement of function, safety coefficient and travelling comfort of shift control mechanism also increasingly high.Current, the shifting system that selects of transmission for vehicles still comes with some shortcomings, and is bigger like gearshift power, and feel is not good; Shift feel is unintelligible; Gearshift irregularity etc.This just need carry out architecture advances to original system, to promote performance improvement.
Retrieval through to existing technology is found; Chinese patent document number CN101555942; Open day 2009-10-14; Put down in writing a kind of " gear shift mechanism of six-speed automobile speed changer ", this technology comprises: fork shaft assembly, interlocking and self-locking mechanism and top cover assembly, fork shaft assembly comprise one two three four retaining fork shafts, five or six retaining and the fork shafts that reverse gear; Interlocking and self-locking mechanism comprise interlock board, from lock assembly, self-locking spring, self-locking steel ball; Top cover assembly is assemblied in the case of transmission top, and top cover assembly comprises block selecting axle, block selecting shifting block, gearshift axle, gearshift shifting block.But shortcoming that should technology is: design cost is higher, complex structure, and a second gear shift fork, the means of fixation of reverse speed fork on fork shaft of this technical pattern are insecure; With a second gear shift fork is example; Because from the effect of lock assembly, a second gear shift fork is close to endoporus and fork shaft, when changing three fourth gear; Under the influence of gearbox vibration and frictional force; A small amount of moving may take place in one second gear shift fork, so can have two groups of situation that synchronizer is worked simultaneously in the shift process, causes certain work risk.
Further retrieval is found; Chinese patent document number CN101413582; Open day 2009-04-22; Put down in writing a kind of " transverse manual speed variator gear shift mechanism " of automotive transmission technical field, this technology comprises: arrange pin, interlocking ring, first declutch shift shaft, second declutch shift shaft, the 3rd declutch shift shaft, gearshift shifting block, choosing gearshift axle, first shifting block, second shifting block and the 3rd shifting block surely, wherein: fixed row's pin is arranged at the upper end of interlocking ring; Interlocking ring is socketed on the choosing gearshift axle; The gearshift shifting block is movably set in interlocking ring inside, and first declutch shift shaft, second declutch shift shaft and the 3rd declutch shift shaft pass first shifting block, second shifting block and the 3rd shifting block respectively, and first shifting block, second shifting block and the 3rd shifting block are socketed on the lower end of interlocking ring successively.But shortcoming that should technology is: manufacture cost is high, and difficulty of processing is big, and stamping part wherein can cause the location inaccurate.
In sum, above-mentioned existing technology all has in the shift process of choosing because input shaft rotational speed reduces makes gear engagement steady inadequately more slowly, noise takes place when hanging reverse gear, beat phenomenon such as tooth.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that existing technology exists; Provide a kind of speed changer to select shifting system; Realize choosing gearshift interlocking function and reverse gear insurance function when comparing existing technology and simplified the reverse gear latch mechanism; And can make the input shaft rotational speed quickening that underspeeds, thereby guarantee the stable and smooth-going of reverse gear engagement.
The present invention realizes through following technological scheme; The present invention includes: comprising: be positioned at case of transmission choosing gearshift axle, be socketed on the choosing gearshift shifting block on the choosing gearshift axle and four groups of selector fork mechanisms that are attached thereto successively; Each group selector fork mechanism comprises: declutch shift shaft and the gear shifting block and the shift fork that are attached thereto respectively, four groups of gear shifting blocks contact with choosing gearshift shifting block respectively.
Be respectively equipped with two groups of shifting block limit resetting means, a gearshift projection and a positioning head on the described choosing gearshift shifting block; Wherein: positioning head is arranged at the relative both sides of choosing gearshift shifting block respectively with the gearshift projection and contacts with abutment sleeve and gear shifting block respectively, and two groups of shifting block limit resetting means axially are set in turn in gearshift projection one side.
Described first shifting block limit resetting means contacts with five or six grades of gear shifting blocks respectively.
Described second shifting block limit resetting means contacts with reverse gear gear shifting block, a second gear gear shifting block and three fourth gear gear shifting blocks respectively.
Described shifting block limit resetting means comprises: be arranged on the choosing gearshift shifting block and respectively with contacted locating slot of gear shifting block and flexible restoring organ.
Described flexible restoring organ comprises: be positioned at radial hole on the choosing gearshift shifting block and spring and the steel ball that is set in turn in radial hole, wherein: the orifice diameter of radial hole is less than hole inner diameter and steel ball size, and steel ball contacts with the gear shifting block.
Through the guide pin bushing realization that an end is the reducing hole structure is set in radial hole, described steel ball and spring are arranged at guide pin bushing inside to the orifice diameter of described radial hole less than the hole inner diameter.
The center of circle of described radial hole and the center line of locating slot are positioned at same horizontal plane, and the distance of the center of circle of radial hole to the center line of the projection of shifting gears equals the distance of center line of six grades of gear shifting blocks of center line to five of reverse gear gear shifting block.
Described gear shifting block and the contacted end of choosing gearshift shifting block are provided with shifting block groove and two groups of pin, wherein: dial pin for two and limit resetting means clamping mutually with shifting block respectively, shifting block groove and the clamping mutually of gearshift projection.
Two groups of pin of described five or six grades of gear shifting blocks are uneven in length and contact with the locating slot and the flexible restoring organ of first shifting block limit resetting means respectively.
Two equal in length of dialling pin of described reverse gear gear shifting block, a second gear gear shifting block, three fourth gear gear shifting blocks, and respectively when the choosing gearshift with gear-changing and selecting shifting block on the clamping mutually of gearshift projection.
The cross-section structure of described positioning head is the M font; And the middle part of positioning head is provided with sliding-groove; Wherein: sliding-groove is a M type groove structure; For point contacts, the inclined-plane of this M type groove structure and the radius of top radius of arc and ball are complementary between the ball on sliding-groove and the abutment sleeve, and the arc groove face perpendicular to sliding-groove of setting is a neutral position.
The present invention locatees self-locking and the interlocking function that first-class structural design can realize each gear through choosing gearshift shifting block, shifting block group and M font; Avoided selecting the tooth problem of beating that occurs in the shift process; The binding energy of steel ball and five or six grades of gear shifting blocks makes input shaft rotational speed reduce rapidly; The stable gear engagement is more prone to hang reverse gear, has reduced the noise when hanging reverse gear simultaneously.Can cancel the reverse gear lock device after adopting this structure, simplify mechanism, in addition M font positioning head be arranged so that gearshift is more smooth-going, comfortable, improved the gearshift performance.
Description of drawings
Fig. 1 is the overall structure figure of speed changer of the present invention.
Fig. 2 is a structural drawing of the present invention.
Fig. 3 is the axial bore of choosing gearshift shifting block and the structural drawing of radial hole.
Fig. 4 is the structural drawing of choosing gearshift shifting block.
Fig. 5 is the side view of the M font positioning head of choosing gearshift shifting block.
Fig. 6 is the structural drawing of guide pin bushing.
Fig. 7 is the structural drawing of gear shifting block.
Embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technological scheme of the present invention.
Embodiment
As depicted in figs. 1 and 2; Present embodiment comprises: be positioned at case of transmission 1 choosing gearshift axle 2, be socketed on choosing gearshift shifting block 3 on the choosing gearshift axle 2 and four groups of a of selector fork mechanism, b, c, the d that is attached thereto successively; Each group selector fork mechanism comprises: declutch shift shaft 4 and the gear shifting block 5 that is attached thereto respectively contact with choosing gearshift shifting block 3 respectively with 6, four groups of gear shifting blocks 5 of shift fork.
As shown in Figures 2 and 3; Be respectively equipped with two groups of shifting blocks limit resetting means 7, a gearshift projection 8 and a positioning head 9 on the described choosing gearshift shifting block 3; Wherein: positioning head 9 is arranged at the relative both sides of choosing gearshift shifting block 3 respectively with gearshift projection 8 and contacts with abutment sleeve and gear shifting block 5 respectively, and two groups of shifting block limit resetting means 7 axially are set in turn in gearshift projection 8 one sides.
Described first shifting block limit resetting means 7 contacts with five or six grades of gear shifting block d5 respectively;
Described second shifting block limit resetting means 7 contacts with reverse gear gear shifting block a5, a second gear gear shifting block b5 and three fourth gear gear shifting block c5 respectively;
Like Fig. 4 and shown in Figure 5, described shifting block limit resetting means 7 comprises: be arranged on the choosing gearshift shifting block 3 and respectively with gear shifting block 5 contacted locating slots 10 and flexible restoring organs 11, wherein:
Like Fig. 2 and shown in Figure 5; Described flexible restoring organ 11 comprises: be positioned at radial hole 12 on the choosing gearshift shifting block 3 and spring (not shown) and the steel ball 14 that is set in turn in radial hole 12; Wherein: the orifice diameter of radial hole 12 is less than hole inner diameter and steel ball 14 diameters, and steel ball 14 contacts with gear shifting block 5.
As shown in Figure 6, the orifice diameter of described radial hole 12 can be through being provided with guide pin bushing 13 realizations that an end is the reducing hole structure less than the hole inner diameter in radial hole 12, and described steel ball 14 is arranged at guide pin bushing inside with the spring (not shown).
As shown in Figure 5; The center line of the center of circle of described radial hole 12 and locating slot 10 is positioned at same horizontal plane, and the distance of the center of circle of radial hole 12 to the center line of the projection 8 of shifting gears equals the distance of center line of six grades of gear shifting blocks of center line to five d5 of reverse gear gear shifting block a5.
As shown in Figure 4, the thickness of described locating slot 10 overlaps with the middle face of locating slot 10 greater than the thickness of gear shifting block 5 and the gear shifting block 5 of work, and the gear shifting block of work can realize selecting gear shift smoothly when making the choosing gearshift in locating slot.
As shown in Figure 7, described gear shifting block 5 and choosing gearshift shifting block 3 contacted ends are provided with shifting block groove 15 and two groups of pin 17, wherein: dial pin 17 for two and limit resetting means 7 clamping mutually with shifting block respectively, shifting block groove 15 and the clamping mutually of gearshift projection 8.
Two groups of pin 17 of described five or six grades of gear shifting block d5 are uneven in length and contact with flexible restoring organ 11 with the locating slot 10 of first shifting block limit resetting means 7 respectively.
Two equal in length of dialling pin 17 of described reverse gear gear shifting block a5, a second gear gear shifting block b5, three fourth gear gear shifting block c5, and respectively when the choosing gearshift with gear-changing and selecting shifting block 3 on gearshift projection 8 clamping mutually.
Described group of pin 17 is provided with chamfering.
The cross-section structure of described positioning head 9 is the M font; And the middle part of positioning head 9 is provided with sliding-groove; Wherein: sliding-groove is a M type groove structure, and for point contacts, the inclined-plane of this M type groove structure and the radius of top radius of arc and ball are complementary between the ball on sliding-groove and the abutment sleeve; The arc groove face perpendicular to sliding-groove that is provided with is a neutral position, can make accurate positioning as positioning means; The top circular arc that ball in gear shift shifting block 3 rotation processes on the abutment sleeve is crossed sliding-groove gets into corresponding gear, makes shift feel more clear.
One second gear select shift process: make the choosing gearshift shifting block 3 that is installed on the choosing gearshift axle 2 move axially through operating handle; Gearshift projection 8 moves to the second gear shifting block, 5 places, and then selects one grade or second gear to get final product, after being selected into one grade; Pairing group of pin 17 of second gear will get into the concave structure the inside of choosing gearshift shifting block 3; And both are in the state of holding out against, and realize gearshift, and the external cylindrical surface that at this moment reverse gear shelves gear shifting block, three fourth gear gear shifting blocks and five or six grades of gear shifting block a5, c5, d5 all can selected gearshift shifting blocks 3 tightly withstands; The interlocking and the self-locking of gear have so just been realized; Reduce self-locking and the interlocks such as gearshift interlocking baffle plate in the gear arrangement, simplified mechanism, reduced assembly error.
Three fourth gear and five or six grades select shift process identical with a second gear.
The shift process that selects of reverse gear is: the gearshift projection 8 of choosing gearshift shifting block 3 moves to the first gear shifting block, 5 places; In this process; Control five or six grades of gear shifting block d5 of five or six grades receive steel ball 14 at the first position structure place extruding; Thereby make five or six grades of gear shifting block d5 put mobile to five gears; The notching construction of the shifting block 3 of choosing gearshift simultaneously can provide the space of placement for second position structure of five or six grades of gear shifting block d5, and the design of chamfering can make its turnover be more prone to, and then moves to five grades of tooth directions through five or six grades of synchro converter rings of five or six grades of shift forks, 6 drives; Frictional force through between the ring gear conical surface and the five grades of gear conical surfaces is the effect that damping function reaches rapid reduction input shaft rotating speed; Make stable gear engagement, be more prone to safe extension and reverse gear and also reduced the noise when hanging reverse gear that five or six grades of gear shifting block d5 ultimate range that can move through steel ball 14 effects is not enough to put into fifth gear simultaneously.It is thus clear that steel ball 14, guide pin bushing and lining only work when changing reverse gear, that is to say a kind of reverse gear half synchronizer.Its interlocking is identical with all the other gears with self-lock mechanism.
The setting of M font positioning head 9, can so that: (1) retrains it as positioning means and to make accurate positioning when neutral position; (2) in shift process, equally as positioning means, make shift feel clear, can improve the gearshift performance so that gearshift is more smooth-going, comfortable in a word, also can play the auto-lock function of each gear simultaneously.
Claims (10)
1. a speed changer selects shifting system; Comprise: be positioned at case of transmission choosing gearshift axle, be socketed on the choosing gearshift shifting block on the choosing gearshift axle and four groups of selector fork mechanisms that are attached thereto successively; It is characterized in that; Each group selector fork mechanism comprises: declutch shift shaft and the gear shifting block and the shift fork that are attached thereto respectively, and four groups of gear shifting blocks contact with choosing gearshift shifting block respectively;
Be respectively equipped with two groups of shifting block limit resetting means, a gearshift projection and a positioning head on the described choosing gearshift shifting block; Wherein: positioning head is arranged at the relative both sides of choosing gearshift shifting block respectively with the gearshift projection and contacts with abutment sleeve and gear shifting block respectively, and two groups of shifting block limit resetting means axially are set in turn in gearshift projection one side;
Described first shifting block limit resetting means contacts with five or six grades of gear shifting blocks respectively;
Described second shifting block limit resetting means contacts with reverse gear gear shifting block, a second gear gear shifting block and three fourth gear gear shifting blocks respectively.
2. speed changer according to claim 1 selects shifting system, it is characterized in that, described shifting block limit resetting means comprises: be arranged on the choosing gearshift shifting block and respectively with contacted locating slot of gear shifting block and flexible restoring organ.
3. speed changer according to claim 2 selects shifting system; It is characterized in that; Described flexible restoring organ comprises: be positioned at radial hole on the choosing gearshift shifting block and spring and the steel ball that is set in turn in radial hole; Wherein: the orifice diameter of radial hole is less than hole inner diameter and steel ball size, and steel ball contacts with the gear shifting block.
4. speed changer according to claim 3 selects shifting system, it is characterized in that, the orifice diameter of described radial hole is meant less than the hole inner diameter: the guide pin bushing that an end is the reducing hole structure is set in radial hole, and described steel ball and spring are arranged at guide pin bushing inside.
5. speed changer according to claim 3 selects shifting system; It is characterized in that; The center of circle of described radial hole and the center line of locating slot are positioned at same horizontal plane, and the distance of the center of circle of radial hole to the center line of the projection of shifting gears equals the distance of center line of six grades of gear shifting blocks of center line to five of reverse gear gear shifting block.
6. speed changer according to claim 1 selects shifting system; It is characterized in that; Described gear shifting block and the contacted end of choosing gearshift shifting block are provided with shifting block groove and two groups of pin, wherein: dial pin for two and limit resetting means clamping mutually with shifting block respectively, shifting block groove and the clamping mutually of gearshift projection.
7. speed changer according to claim 6 selects shifting system, it is characterized in that, two groups of pin of described five or six grades of gear shifting blocks are uneven in length and contact with the locating slot and the flexible restoring organ of first shifting block limit resetting means respectively.
8. speed changer according to claim 6 selects shifting system; It is characterized in that; Two equal in length of dialling pin of described reverse gear gear shifting block, a second gear gear shifting block, three fourth gear gear shifting blocks, and respectively when the choosing gearshift with gear-changing and selecting shifting block on the clamping mutually of gearshift projection.
9. speed changer according to claim 1 selects shifting system, it is characterized in that, described group of pin is provided with chamfering.
10. speed changer according to claim 1 selects shifting system; It is characterized in that the cross-section structure of described positioning head is the M font, and the middle part of positioning head is provided with sliding-groove; Wherein: sliding-groove is a M type groove structure; For point contacts, the inclined-plane of this M type groove structure and the radius of top radius of arc and ball are complementary between the ball on sliding-groove and the abutment sleeve, and the arc groove face perpendicular to sliding-groove of setting is a neutral position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110320264.1A CN102506159B (en) | 2011-10-20 | 2011-10-20 | Gear selection and shift system for gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110320264.1A CN102506159B (en) | 2011-10-20 | 2011-10-20 | Gear selection and shift system for gear box |
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| CN102506159A true CN102506159A (en) | 2012-06-20 |
| CN102506159B CN102506159B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110320264.1A Active CN102506159B (en) | 2011-10-20 | 2011-10-20 | Gear selection and shift system for gear box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216611A (en) * | 2013-04-18 | 2013-07-24 | 柳州上汽汽车变速器有限公司 | Gear selecting and shifting device of automobile transmission |
| CN106133407A (en) * | 2014-03-26 | 2016-11-16 | 舍弗勒技术股份两合公司 | Have for selection and single motor speed varying device executor of the chute of the gear of switching machine motor vehicle transmission device |
| CN108799478A (en) * | 2018-08-01 | 2018-11-13 | 株洲欧格瑞传动股份有限公司 | Shift integrated package, gearshift and vehicle |
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| CN101413582A (en) * | 2008-12-05 | 2009-04-22 | 上海汽车变速器有限公司 | Transverse manual speed variator gear shift mechanism |
| CN101504073A (en) * | 2009-03-04 | 2009-08-12 | 上海汽车集团股份有限公司 | Gear shift mechanism of manual transmission |
| CN101592223A (en) * | 2008-05-30 | 2009-12-02 | 谢夫勒两合公司 | The gearshift mechanism that is used for speed changer |
| WO2010045991A1 (en) * | 2008-10-20 | 2010-04-29 | Koki Technik Transmission Systems Gmbh | Multifunctional sleeve |
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2011
- 2011-10-20 CN CN201110320264.1A patent/CN102506159B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592223A (en) * | 2008-05-30 | 2009-12-02 | 谢夫勒两合公司 | The gearshift mechanism that is used for speed changer |
| WO2010045991A1 (en) * | 2008-10-20 | 2010-04-29 | Koki Technik Transmission Systems Gmbh | Multifunctional sleeve |
| CN101413582A (en) * | 2008-12-05 | 2009-04-22 | 上海汽车变速器有限公司 | Transverse manual speed variator gear shift mechanism |
| CN101504073A (en) * | 2009-03-04 | 2009-08-12 | 上海汽车集团股份有限公司 | Gear shift mechanism of manual transmission |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216611A (en) * | 2013-04-18 | 2013-07-24 | 柳州上汽汽车变速器有限公司 | Gear selecting and shifting device of automobile transmission |
| CN103216611B (en) * | 2013-04-18 | 2015-05-13 | 柳州上汽汽车变速器有限公司 | Gear selecting and shifting device of automobile transmission |
| CN106133407A (en) * | 2014-03-26 | 2016-11-16 | 舍弗勒技术股份两合公司 | Have for selection and single motor speed varying device executor of the chute of the gear of switching machine motor vehicle transmission device |
| CN106133407B (en) * | 2014-03-26 | 2018-10-02 | 舍弗勒技术股份两合公司 | Single motor speed varying device actuator and its control method |
| CN108799478A (en) * | 2018-08-01 | 2018-11-13 | 株洲欧格瑞传动股份有限公司 | Shift integrated package, gearshift and vehicle |
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| CN102506159B (en) | 2014-08-13 |
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