CN102506159B - Gear selection and shift system for gear box - Google Patents
Gear selection and shift system for gear box Download PDFInfo
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- CN102506159B CN102506159B CN201110320264.1A CN201110320264A CN102506159B CN 102506159 B CN102506159 B CN 102506159B CN 201110320264 A CN201110320264 A CN 201110320264A CN 102506159 B CN102506159 B CN 102506159B
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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 a kind ofly saves reverse gear lock device and can avoid reverse gear gearshift to beat the gear selecting shifting system of tooth.
Background technique
Along with scientific and technological development, the progress of society, automobile has become the traffic tool indispensable in people's daily life and industrial and agricultural production.In " 12 " planning, automobile industry technology also becomes the field that the Department of Science and Technology gives special assistance to, and is 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 by the science and technology core topic that just becomes at present and must emphasis in future automobile industry development solve of innovating to realize this goal.
People are more and more higher to the requirement of automobile, not only to outward appearance, performance, etc. aspect higher standard has been proposed, and the requirement of function, safety coefficient and travelling comfort to automobile gear shift operating mechanism is also more and more higher.Current, the shifting system of transmission for vehicles still comes with some shortcomings, as larger in gear shifting force, and feel is not good; Shift feel is unintelligible; Gearshift irregularity etc.This just need to carry out architecture advances to original system, to promote performance improvement.
Through the retrieval of prior art is found, Chinese patent literature CN101555942, open day 2009-10-14, record 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, and fork shaft assembly comprises one two three four gear fork shafts, five or six gear and the fork shafts that reverse gear; Interlocking and self-locking mechanism comprises interlock board, from lock assembly, self-locking spring, self-locking steel ball; Top cover assembly is assemblied in case of transmission top, and top cover assembly comprises block selecting axle, block selecting shifting block, shifting shaft, gear shifting pulling head.But the shortcoming of this technology is: design cost is higher, complex structure, and a second gear shift fork of this technical pattern, the means of fixation of reverse speed fork on fork shaft are insecure, taking a second gear shift fork as example, due to the effect from lock assembly, one second gear shift fork is close to endoporus and fork shaft, in the time changing three fourth gear, under the impact of gearbox vibration and frictional force, may there is a small amount of movement in one second gear shift fork, therefore in shift process, can there are two groups of situations that synchronizer is worked simultaneously, cause certain work risk.
Further retrieval is found, Chinese patent literature CN101413582, open day 2009-04-22, record a kind of " transverse manual speed variator gear shift mechanism " of automotive transmission technical field, this technology comprises: fixed row's pin, interlocking ring, the first declutch shift shaft, the second declutch shift shaft, the 3rd declutch shift shaft, gear shifting pulling head, shifting axle, the first shifting block, the second shifting block and the 3rd shifting block, wherein: fixed row's pin is arranged at the upper end of interlocking ring, interlocking ring is socketed on shifting axle, gear shifting pulling head is movably set in interlocking ring inside, the first declutch shift shaft, the second declutch shift shaft and the 3rd declutch shift shaft are respectively through the first shifting block, the second shifting block and the 3rd shifting block, the first shifting block, the second shifting block and the 3rd shifting block are socketed on the lower end of interlocking ring successively.But the shortcoming of this technology is: manufacture cost is high, and difficulty of processing is large, stamping part wherein can cause location inaccurate.
In sum, above-mentioned prior art all has the rotating speed reduction due to input shaft in shifting process and makes more slowly gear engagement steady not, while hanging into reverse gear, noise occurs, beats the phenomenons such as tooth.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of gear selecting shifting system is provided, when having simplified compared to existing technology reverse gear lock mechanism, realize shifting interlocking function and reverse gear insurance function, and the rotating speed that can the make input shaft quickening that underspeeds, thereby ensure the stable and smooth-going of reverse gear engagement.
The present invention is achieved by the following technical solutions, the present invention includes: comprising: be positioned at the shifting axle of case of transmission, four groups of selector fork mechanisms that are socketed on the shifting shifting block on shifting axle and 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 shifting shifting block respectively.
On described shifting shifting block, be respectively equipped with two groups of shifting block limit resetting means, a gearshift projection and a positioning head, wherein: positioning head is arranged at respectively the relative both sides of shifting shifting block and contacts with abutment sleeve and gear shifting block respectively with gearshift projection, two groups of shifting block limit resetting means are axially set in turn in gearshift projection one side.
The first described shifting block limit resetting means contacts with five or six grades of gear shifting blocks respectively.
The second described 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 shifting shifting block and the locating slot and the flexible restoring organ that contact with gear shifting block respectively.
Described flexible restoring organ comprises: be positioned at the radial hole on shifting shifting block and be set in turn in spring and the steel ball of radial hole, wherein: the orifice diameter of radial hole is less than hole inner diameter and steel ball size, steel ball contacts with gear shifting block.
The orifice diameter of described radial hole is less than hole inner diameter by the guide pin bushing realization that one end is reducing hole structure is set in radial hole, and described steel ball and spring is arranged at guide pin bushing inside.
The center of circle of described radial hole and the center line of locating slot are positioned at same level, and the center of circle of radial hole to the distance of the center line of the projection of shifting gears equals the distance of the center line of six grades of gear shifting blocks of center line to five of reverse gear gear shifting block.
One end that described gear shifting block contacts with shifting shifting block is provided with shifting block groove and two groups of pin, wherein: dial pin for two and limit the clamping of resetting means phase with shifting block respectively, shifting block groove and the clamping of gearshift projection phase.
Two groups of pin length of five or six grades of described gear shifting blocks do not wait and contact with locating slot and the flexible restoring organ of the first shifting block limit resetting means respectively.
Dial the equal in length of pin for two of described reverse gear gear shifting block, a second gear gear shifting block, three fourth gear gear shifting blocks, and respectively in the time of shifting with gear-changing and selecting shifting block on the clamping of gearshift projection phase.
The cross-section structure of described positioning head is M font, and the middle part of positioning head is provided with sliding-groove, wherein: sliding-groove is M type groove structure, between ball on sliding-groove and abutment sleeve, be that point contacts, the inclined-plane of this M type groove structure and the radius of top radius of arc and ball match, and the arc groove face perpendicular to sliding-groove of setting is neutral position.
The present invention is located first-class structural design and can be realized self-locking and the interlocking function of each gear by shifting shifting block, shifting block group and M font, avoid the tooth problem of beating occurring in shifting process, the combination of steel ball and five or six grades of gear shifting blocks can make the rotating speed of input shaft reduce rapidly, stable gear engagement, be more prone to hang into reverse gear, reduced the noise while hanging reverse gear simultaneously.After adopting this structure, can cancel reverse gear lock device, simplify mechanism, in addition M font positioning head be arranged so that gearshift more smooth-going, comfortable, improved gearshift performance.
Brief description of the drawings
Fig. 1 is the overall structure figure of speed changer of the present invention.
Fig. 2 is structural drawing of the present invention.
Fig. 3 is the axial bore of shifting shifting block and the structural drawing of radial hole.
Fig. 4 is the structural drawing of shifting shifting block.
Fig. 5 is the side view of the M font positioning head of shifting shifting block.
Fig. 6 is the structural drawing of guide pin bushing.
Fig. 7 is the structural drawing of gear shifting block.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
As depicted in figs. 1 and 2, the present embodiment comprises: be positioned at the shifting axle 2 of case of transmission 1, four groups of a of selector fork mechanism, b, c, the d that is socketed on the shifting shifting block 3 on shifting axle 2 and is attached thereto successively, each group selector fork mechanism comprises: declutch shift shaft 4 and the gear shifting block 5 being attached thereto respectively and 6, four groups of gear shifting blocks 5 of shift fork contact with shifting shifting block 3 respectively.
As shown in Figures 2 and 3, on described shifting shifting block 3, be respectively equipped with two groups of shifting blocks limit resetting means 7, gearshift projection 8 and a positioning head 9, wherein: positioning head 9 is arranged at respectively the relative both sides of shifting shifting block 3 and contacts with abutment sleeve and gear shifting block 5 respectively with gearshift projection 8, two groups of shifting block limit resetting means 7 are axially set in turn in gearshift projection 8 one sides.
The first described shifting block limit resetting means 7 contacts with five or six grades of gear shifting block d5 respectively;
The second described 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;
As shown in Figure 4 and Figure 5, described shifting block limit resetting means 7 comprises: be arranged on shifting shifting block 3 and the locating slot 10 and the flexible restoring organ 11 that contact with gear shifting block 5 respectively, wherein:
As shown in Figure 2 and Figure 5, described flexible restoring organ 11 comprises: be positioned at the radial hole 12 on shifting shifting block 3 and be set in turn in spring (not shown) and the steel ball 14 of 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 is less than hole inner diameter can be by being that the guide pin bushing 13 of reducing hole structure is realized in the interior one end that arranges of radial hole 12, and described steel ball 14 and spring (not shown) are arranged at guide pin bushing inside.
As shown in Figure 5, the center of circle of described radial hole 12 and the center line of locating slot 10 are positioned at same level, and the center of circle of radial hole 12 to the distance of the center line of the projection 8 of shifting gears equals the distance of the center line of six grades of gear shifting block d5 of center line to five of reverse gear gear shifting block a5.
As shown in Figure 4, the thickness of described locating slot 10 is greater than the thickness of gear shifting block 5 and the gear shifting block 5 of work overlaps with the middle face of locating slot 10, and the gear shifting block of working while making shifting can be realized smoothly and select gear shift in locating slot.
As shown in Figure 7, one end that described gear shifting block 5 contacts with shifting shifting block 3 is provided with shifting block groove 15 and two groups of pin 17, wherein: dial pin 17 for two and limit resetting means 7 phase clampings with shifting block respectively, shifting block groove 15 and the 8 phase clampings of gearshift projection.
Two groups of pin 17 length of five or six grades of described gear shifting block d5 do not wait and contact with locating slot 10 and the flexible restoring organ 11 of the first shifting block limit resetting means 7 respectively.
Dial the equal in length of pin 17 for two of described reverse gear gear shifting block a5, a second gear gear shifting block b5, three fourth gear gear shifting block c5, and respectively in the time of shifting with gear-changing and selecting shifting block 3 on the 8 phase clampings of gearshift projection.
The described pin 17 of dialling is provided with chamfering.
The cross-section structure of described positioning head 9 is M font, and the middle part of positioning head 9 is provided with sliding-groove, wherein: sliding-groove is M type groove structure, between the ball on sliding-groove and abutment sleeve, be that point contacts, the inclined-plane of this M type groove structure and the radius of top radius of arc and ball match; The arc groove face perpendicular to sliding-groove arranging is neutral position, can make accurate positioning as positioning means; The top circular arc that ball in gear shift shifting block 3 rotation processes on abutment sleeve is crossed sliding-groove enters corresponding gear, makes shift feel more clear.
The shifting process of one second gear: the shifting shifting block 3 that makes to be arranged on shifting axle 2 by operating handle moves axially, gearshift projection 8 moves to the second gear shifting block 5 places, and then selection one grade or second gear, when being selected into after one grade, corresponding group of pin 17 of second gear will enter the concave structure the inside of shifting shifting block 3, and both are in holding out against state, realize gearshift, 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 gear shifting pulling head 3 external cylindrical surface tightly withstand, interlocking and the self-locking of gear are so just realized, self-locking and the interlocks such as the gearshift interlocking baffle plate in gear arrangement are reduced, simplify mechanism, reduce assembly error.
The shifting process of three fourth gear and five or six grades is identical with a second gear.
The shifting process of reverse gear is: the gearshift projection 8 of shifting 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 are subject to steel ball 14 extruding at the first position structure place, thereby five or six grades of gear shifting block d5 are moved to five file locations, the notching construction of shifting shifting block 3 can provide for the second position structure of five or six grades of gear shifting block d5 the space of placement simultaneously, the design of chamfering can make its turnover be more prone to, and then drive five or six grades of synchro converter rings to move to five grades of tooth directions by five or six grades of shift forks 6, be the effect that damping function reaches rapid reduction input shaft rotating speed by the frictional force between the ring gear conical surface and five grades of gear conical surfaces, make stable gear engagement, being more prone to safe extension reverse gear and has also reduced the noise while hanging reverse gear, while five or six grades of gear shifting block d5 act on the ultimate range that can move by steel ball 14 and are not enough to put into fifth gear.Visible, steel ball 14, guide pin bushing and lining only work in the time 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 make: (1), in the time of neutral position, retrains and makes accurate positioning it as positioning means; (2) in shift process, equally as positioning means, make shift feel clear, can make in a word gearshift more smooth-going, comfortable, improve gearshift performance, also can play the auto-lock function of each gear simultaneously.
Claims (9)
1. a gear selecting shifting system, comprise: be positioned at the shifting axle of case of transmission, four groups of selector fork mechanisms that are socketed on the shifting shifting block on shifting axle and 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 shifting shifting block respectively;
On described shifting shifting block, be respectively equipped with two groups of shifting block limit resetting means, a gearshift projection and a positioning head, wherein: positioning head is arranged at respectively the relative both sides of shifting shifting block and contacts with abutment sleeve and gear shifting block respectively with gearshift projection, two groups of shifting block limit resetting means are axially set in turn in gearshift projection one side;
The first described shifting block limit resetting means contacts with five or six grades of gear shifting blocks respectively;
The second described 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 shifting shifting block and the locating slot and the flexible restoring organ that contact with gear shifting block respectively.
2. gear selecting shifting system according to claim 1, it is characterized in that, described flexible restoring organ comprises: be positioned at the radial hole on shifting shifting block and be set in turn in spring and the steel ball of radial hole, wherein: the orifice diameter of radial hole is less than hole inner diameter and steel ball size, steel ball contacts with gear shifting block.
3. gear selecting shifting system according to claim 2, is characterized in that, the orifice diameter of described radial hole is less than hole inner diameter and refers to: the guide pin bushing that one end is reducing hole structure is set in radial hole, and described steel ball and spring is arranged at guide pin bushing inside.
4. gear selecting shifting system according to claim 2, it is characterized in that, the center of circle of described radial hole and the center line of locating slot are positioned at same level, and the center of circle of radial hole to the distance of the center line of the projection of shifting gears equals the distance of the center line of six grades of gear shifting blocks of center line to five of reverse gear gear shifting block.
5. gear selecting shifting system according to claim 1, it is characterized in that, one end that described gear shifting block contacts with shifting shifting block is provided with shifting block groove and two groups of pin, wherein: dial pin for two and limit the clamping of resetting means phase with shifting block respectively, shifting block groove and the clamping of gearshift projection phase.
6. gear selecting shifting system according to claim 5, is characterized in that, two groups of pin length of five or six grades of described gear shifting blocks do not wait and contact with locating slot and the flexible restoring organ of the first shifting block limit resetting means respectively.
7. gear selecting shifting system according to claim 5, it is characterized in that, dial the equal in length of pin for two of described reverse gear gear shifting block, a second gear gear shifting block, three fourth gear gear shifting blocks, and respectively in the time of shifting with gear-changing and selecting shifting block on the clamping of gearshift projection phase.
8. according to the gear selecting shifting system described in claim 5 or 6 or 7, it is characterized in that, the described pin of dialling is provided with chamfering.
9. gear selecting shifting system according to claim 1, it is characterized in that, the cross-section structure of described positioning head is M font, and the middle part of positioning head is provided with sliding-groove, wherein: sliding-groove is M type groove structure, between ball on sliding-groove and abutment sleeve, be that point contacts, the inclined-plane of this M type groove structure and the radius of top radius of arc and ball match, and the arc groove face perpendicular to sliding-groove of setting is 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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| Publication Number | Publication Date |
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| CN102506159A CN102506159A (en) | 2012-06-20 |
| CN102506159B true CN102506159B (en) | 2014-08-13 |
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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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106133407B (en) * | 2014-03-26 | 2018-10-02 | 舍弗勒技术股份两合公司 | Single motor transmission actuator and control method thereof |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
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 |
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| CN102506159A (en) | 2012-06-20 |
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