CN201627908U - Shift mechanism of six-shift speed changer - Google Patents
Shift mechanism of six-shift speed changer Download PDFInfo
- Publication number
- CN201627908U CN201627908U CN 201020104819 CN201020104819U CN201627908U CN 201627908 U CN201627908 U CN 201627908U CN 201020104819 CN201020104819 CN 201020104819 CN 201020104819 U CN201020104819 U CN 201020104819U CN 201627908 U CN201627908 U CN 201627908U
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- shift
- fork
- gear
- rocking arm
- shafts
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Abstract
The embodiment of the utility model discloses a shift mechanism of a six-shift speed changer. The shift mechanism comprises shift shafts, two shift rocker arms, two fork shift shafts and four shift forks, wherein the two ends of each of the shift shafts are respectively supported on a shift box and the speed changer; the two shift rocker arms are respectively fixed on the shift shafts and respectively close to the two fork shift shafts; and the four shift forks are respectively sheathed on the two fork shift shafts. With the adoption of the two shift rocker arms, the axial distance of the shift shafts between shift forks is larger, thereby being beneficial for the arrangement of the shift forks and avoiding the spongy shift as the distance of the shift forks and the fork shift shafts is too far, and the distance of the fork shift shafts and the center of a synchronizer is too far under the condition that only one shift rocker arm is provided. All the shift forks can put into the shift and pick off the shift by the match of the two shift rocker arms fixed on the shift shafts, and the shift rocker arms can rotate along different directions at different axial positions so as to be matched with the shift forks, thereby putting into the shift and picking off the shift at different shifts finally.
Description
Technical field
The utility model relates to the automotive transmission technical field, more particularly, relates to a kind of gearshift mechanism of six-speed gearbox.
Background technique
Only there is a gear shifting rocking arm in the gearshift mechanism overwhelming majority of automobile six-speed gearbox, the especially employed six-speed gearbox of passenger car commonly used at present, and each range fork is all together adjacent stem for stem.
Six-speed gearbox for shaft type in the middle of two, owing to increased a jack shaft, make that the speed changer inner space is more limited, make the layout of whole gearshift mechanism difficult more, promptly allow to arrange down, owing to the distance between two jack shafts is bigger, want all range forks all are arranged in stem for stem and be certain to cause range fork excessive apart from the distance of declutch shift shaft or the distance at declutch shift shaft and synchronizer center is excessive together, excessive or declutch shift shaft of common this range fork and declutch shift shaft distance and synchronizer centre distance are crossed conference and cause occurring that gear shift " is felt like jelly " and the unsharp sensation of gear shift in gearshift procedures.
In addition, for the adjacent speed changer that arrives together of range fork, because the gap is very little between each range fork, in gearshift procedure, occur unavoidably wiping mutually and interference such as bump, for fear of the gross error that occurs hanging simultaneously many grades, the special protection mechanism of similar " interlock board " class also will be set in traditional gearshift mechanism, just make that for fear of mutual interference the requirement on machining accuracy of these parts is all higher, and gearshift mechanism commonly used plucking in grade process behind transposition and engage a gear because the effect of return spring, can cause gear shifting rocking arm to contact with certain range fork that faces mutually, thereby will produce the phase mutual friction like this and cause plucking a grade clamping stagnation, must in gearshift mechanism, set up one again and prevent that with " king's letter stencil " similarly special limit structure these necessary parts from causing the gearshift mechanism complex structure of traditional speed changer if avoid plucking grade clamping stagnation, the cost height, unavoidable problem such as manufacturing difficulty.Improving constantly of requirements such as travelling comfort of car load being driven along with the Consumer and cost performance addresses the above problem and is necessary.
The model utility content
In view of this, the utility model provides a kind of gearshift mechanism of six-speed gearbox, to avoid owing to have only range fork under the situation of a gear shifting rocking arm to cross the feel like jelly generation of phenomenon of the gear shift that is caused far away apart from declutch shift shaft hypertelorism or declutch shift shaft and synchronizer centre distance.
For achieving the above object, the utility model provides following technological scheme:
A kind of gearshift mechanism of six-speed gearbox comprises gearshift axle, gearshift rocking arm, declutch shift shaft and selector fork, and described shift shaft two ends are supported on respectively on gear shift case and the mission case,
Described declutch shift shaft is 2;
Described gearshift rocking arm is two, is fixedly installed on respectively on the described gearshift axle, and respectively near described two declutch shift shafts;
Described selector fork is 4, be set on described two declutch shift shafts, and described selector fork is provided with shift fork.
Preferably, the gearshift mechanism of above-mentioned six-speed gearbox, described four selector forks are parallel to each other, and have the gap between any two adjacent selector forks, and this gap can guarantee that in shift process, adjacent selector fork does not interfere.
Preferably, the gearshift mechanism of above-mentioned six-speed gearbox, two in described four selector forks are arranged on the declutch shift shaft, and two other is arranged on another declutch shift shaft.
Preferably, the gearshift mechanism of above-mentioned six-speed gearbox, described gearshift rocking arm middle part is provided with notch, and is provided with the fork head in described notch;
After hanging up gear, first surface of contact in range fork notch internal surface and the gearshift rocking arm contacts;
When certain gear engage a gear, the second surface of contact outline position of other range fork notch inner surface profile positions and gear shifting rocking arm matches.
From above-mentioned technological scheme as can be seen, the utility model embodiment has fixed two gear shifting rocking arms respectively by the diverse location on shift shaft, the shift shaft two ends are supported on respectively on gear shift case and the mission case, can move axially under external force or rotatablely move, four range forks are enclosed within respectively on two declutch shift shafts, each shift fork can be in axial sliding along declutch shift shaft under external force, the final interior respective synchronization device of speed changer that drives moves the realization engage a gear and plucks shelves, owing to adopt two gear shifting rocking arms, so the distance between each range fork is bigger, the layout that helps range fork has been avoided owing to have only range fork under the situation of a gear shifting rocking arm apart from the feel like jelly generation of phenomenon of declutch shift shaft hypertelorism or the gear shift that hypertelorism caused of shift shaft and synchronizer.Each range fork by be fixed on two gear shifting rocking arms on the shift shaft and cooperate and realize engage a gears and pluck shelves, gear shifting rocking arm at different axial positions by plucking shelves with the range fork final engage a gear of different gears of realizing that matches to rotatablely moving of different direction.Can limit moving axially of shift shaft by notch on the gear shifting rocking arm and range fork form fit after hanging up certain gear, simultaneously the special shape of the special shape of gear shifting rocking arm and range fork matches and can prevent to hang simultaneously the generation of many grades of phenomenons.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The gearshift mechanism structural representation of the six-speed gearbox that Fig. 1 provides for the utility model embodiment;
The structural representation of the gear shifting rocking arm that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the sectional view of Fig. 2 along the H-H line;
The selector fork structural representation that Fig. 4 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of gearshift mechanism of six-speed gearbox, to avoid owing to have only the feel like jelly generation of phenomenon of range fork is caused apart from the declutch shift shaft hypertelorism under the situation of a gear shifting rocking arm gear shift.
See also Fig. 1-4, the gearshift mechanism structural representation of the six-speed gearbox that Fig. 1 provides for the utility model embodiment, the structural representation of the gear shifting rocking arm that Fig. 2 provides for the utility model embodiment, Fig. 3 is the sectional view of Fig. 2 along the H-H line, the selector fork structural representation that Fig. 4 provides for the utility model embodiment.
Wherein, 1 is first return spring, and 2 is gear shifting rocking arm, and 21 is first gear shifting rocking arm, 22 is second gear shifting rocking arm, and 201 is the fork head, and 3 is shift shaft, and 4 is range fork, 41 is three fourth gear range forks, and 42 is transmission reverse speed shift fork, and 43 is five or six gear shifts forks, 44 is a second gear range fork, and 5 is second return spring, and 6 is spring seat, 7 is collar, and 8 is first declutch shift shaft, and 9 is second declutch shift shaft, 202 is first surface of contact, and 203 is second surface of contact, and 401 is range fork notch internal surface.
In the six-speed gearbox gearshift mechanism that the utility model provides, diverse location on shift shaft 3 has been fixed two gear shifting rocking arms 2 respectively, these two gear shifting rocking arms are specially first gear shifting rocking arm 21 and second gear shifting rocking arm 22, shift shaft 3 two ends are supported on respectively on gear shift case and the mission case, can move axially under external force or rotatablely move, four range forks 4 are cast as one with four shift forks respectively, four shift forks are enclosed within respectively on two declutch shift shafts, each shift fork can be in axial sliding along declutch shift shaft under external force, the final interior respective synchronization device of speed changer that drives moves the realization engage a gear and plucks shelves, be parallel to each other between each range fork, mutual distance is bigger, the three fourth gear range forks 41 that are arranged parallel to each other, transmission reverse speed shift fork 42, distance between five or six gear shifts fork, the 43 and one second gear range fork 44 is bigger, do not have together adjacent, can avoid interference effect each other, reduced the required precision that shift shaft 3 is moved axially the transposition distance simultaneously, because the gap is bigger mutually between each range fork, even putting in place fully, transposition can not realize that too engage a gear plucks shelves and can not influence other gears substantially, it will be understood by those skilled in the art that the said meaning that does not put in place fully is to admit of little deviation here, be not have required precision, just required precision will reduce a lot.Each range fork is by realizing the said engage a gear in front and pluck shelves with the cooperation that is fixed on first gear shifting rocking arm 21 on the shift shaft 3 and second gear shifting rocking arm 22, gear shifting rocking arm different axial positions by to different direction rotatablely move with the range fork of corresponding gear match the final engage a gear of realizing different gears, pluck shelves.
In sum, in a speed changer, have two gear shifting rocking arms simultaneously, first gear shifting rocking arm 21 and second gear shifting rocking arm 22, so just needn't make range fork all concentrate on the position of a gear shifting rocking arm, make two gear shifting rocking arms respectively near two declutch shift shafts, range fork does not just need the declutch shift shaft away from each shift fork place like this, such structure helps the layout of range fork for the especially two jack shaft six-speed gearboxes of six-speed gearbox, has avoided owing to have only the feel like jelly generation of phenomenon of range fork is caused apart from the declutch shift shaft hypertelorism under the situation of a gear shifting rocking arm gear shift.
Further, be provided with notch at the middle part of gearshift rocking arm 2, and in described notch, be provided with fork head 201 in order to optimize technique scheme; Described selector fork is provided with the notch suitable with described fork head 201, described notch can also with described gearshift rocking arm in and other positions of described fork head homonymy adaptive.Because matching, the shape of range fork and gear shifting rocking arm shape can play behind engage a gear axial spacing of shift shaft 3, can play again simultaneously limit position to shift shaft 3 sense of rotation when hanging this gear carry out spacing, to prevent the damage of excessive synchronizer that causes of angle of swing or gear.First gear shifting rocking arm 21 is realized engage a gear and is plucked shelves by cooperatively interacting with different range forks with second gear shifting rocking arm 22.
Movement process to this six-speed gearbox gearshift mechanism is described in detail below:
When shift shaft 3 does not move axially, the range fork alignment of the fork head 201 of second gear shifting rocking arm 22 and three fourth gear shift forks 41, by can realize the gear shift of three fourth gear to the different direction rotation, at this moment the fork head 201 of first gear shifting rocking arm 21 just in time is in the space between a second gear range fork 44 and five or the six gear shifts fork 43, and its rotation can not had any relation with two range forks.If moving the fork head 201 that makes first gear shifting rocking arm 21 to right side shown in Figure 1, shift shaft 3 aligns with five or six gear shifts fork 43, at this moment the fork head 201 of second gear shifting rocking arm 22 blank space on three fourth gear range forks, 41 right sides of having arrived, at this moment shift shaft rotation will make first gear shifting rocking arm 21 and 43 interactions of five or six gear shifts fork realize five or six grades gear shift, and second gear shifting rocking arm 22 is that idle running is not related with any parts.
Same reason goes to realize the gear shift of a second gear and reverse gear.Adopt the special shape cooperation can realize spacing and function interlocking about gear shifting rocking arm and range fork, the utility model is to solve like this: also just just in time the notch with gear shifting rocking arm 2 neutral positions is relative when the fork head 201 of gear shifting rocking arm 2 aligns with range fork 4, and the moving range fork 4 of gear shifting rocking arm 2 rotating bands moves engage a gear when engage a gear.Hang up behind the gear when range fork notch internal surface 401 positions among Fig. 4 and first surface of contact, 202 positions among Fig. 3 contact, moving of the rotation of gear shifting rocking arm 2 and range fork 4 all has been limited, so just played the engage a gear position-limiting action, and at this moment range fork 4 just in time sticks in the notch of gear shifting rocking arm 2, because range fork 4 can not move axially along shift shaft 3, when shift shaft 3 will be axially moved by spring force or other power effects to be stuck in the gear shifting rocking arm notch range fork restriction and can't realize under the situation of hanging shelves, when certain gear engage a gear other range fork notch internal surface 401 outline position just and second surface of contact, 203 outline position of gear shifting rocking arm cooperating, range fork can not be axially moved along declutch shift shaft, so just play the effect of interlocking, occurred hanging simultaneously the appearance of two grades of phenomenons never.
In sum, the shape of gear shifting rocking arm and the shape of range fork match can realize behind the engage a gear to axial spacing of shift shaft 3 and to shift shaft 3 limit position of sense of rotation spacing during at engage a gear, can save a special position-limit mechanism (" king's letter stencil " structure in traditional speed changer).Only could drive lower edge declutch shift shaft slip at gear shifting rocking arm simultaneously at the fork head of gear shifting rocking arm and the shift fork of certain range fork alignment, other shift forks are owing to the special shape of two gear shifting rocking arms can not move, so just play " interlocking " effect, just save a special mutual interlocking gear (" interlock board " mechanism in traditional speed changer) again.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. the gearshift mechanism of a six-speed gearbox comprises gearshift axle, gearshift rocking arm, declutch shift shaft and selector fork, and described shift shaft two ends are supported on respectively on gear shift case and the mission case, it is characterized in that,
Described declutch shift shaft is 2;
Described gearshift rocking arm is two, is fixedly installed on respectively on the described gearshift axle, and respectively near described two declutch shift shafts;
Described selector fork is 4, be set on described two declutch shift shafts, and described selector fork is provided with shift fork.
2. the gearshift mechanism of six-speed gearbox as claimed in claim 1 is characterized in that, described four selector forks are parallel to each other, and has the gap between any two adjacent selector forks, and this gap can guarantee that in shift process, adjacent selector fork does not interfere.
3. the gearshift mechanism of six-speed gearbox as claimed in claim 1 is characterized in that, two in described four selector forks are arranged on the declutch shift shaft, and two other is arranged on another declutch shift shaft.
4. as the gearshift mechanism of each described six-speed gearbox of claim 1-3, it is characterized in that described gearshift rocking arm middle part is provided with notch, and is provided with the fork head in described notch;
After hanging up gear, first surface of contact in range fork notch internal surface and the gearshift rocking arm contacts;
When certain gear engage a gear, the second surface of contact outline position of other range fork notch inner surface profile positions and gear shifting rocking arm matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020104819 CN201627908U (en) | 2010-01-26 | 2010-01-26 | Shift mechanism of six-shift speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020104819 CN201627908U (en) | 2010-01-26 | 2010-01-26 | Shift mechanism of six-shift speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627908U true CN201627908U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020104819 Expired - Lifetime CN201627908U (en) | 2010-01-26 | 2010-01-26 | Shift mechanism of six-shift speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201627908U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322519A (en) * | 2011-06-27 | 2012-01-18 | 重庆青山工业有限责任公司 | Gear shifting actuating mechanism of double-clutch automatic gearbox |
| CN102564760A (en) * | 2011-12-31 | 2012-07-11 | 重庆青山工业有限责任公司 | Transmission efficiency test bench of AMT (Automated Mechanical Transmission) gear selection executing mechanism |
| CN103527763A (en) * | 2013-10-30 | 2014-01-22 | 长城汽车股份有限公司 | Gear shifting mechanism and transmission with same |
| CN105221742A (en) * | 2015-10-30 | 2016-01-06 | 重庆青山工业有限责任公司 | A kind of interior gearshift mechanism of six fast forward gears manual transmissions |
-
2010
- 2010-01-26 CN CN 201020104819 patent/CN201627908U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322519A (en) * | 2011-06-27 | 2012-01-18 | 重庆青山工业有限责任公司 | Gear shifting actuating mechanism of double-clutch automatic gearbox |
| CN102322519B (en) * | 2011-06-27 | 2013-10-16 | 重庆青山工业有限责任公司 | Gear shifting actuating mechanism of double-clutch automatic gearbox |
| CN102564760A (en) * | 2011-12-31 | 2012-07-11 | 重庆青山工业有限责任公司 | Transmission efficiency test bench of AMT (Automated Mechanical Transmission) gear selection executing mechanism |
| CN102564760B (en) * | 2011-12-31 | 2014-06-04 | 重庆青山工业有限责任公司 | Transmission efficiency test bench of AMT (Automated Mechanical Transmission) gear selection executing mechanism |
| CN103527763A (en) * | 2013-10-30 | 2014-01-22 | 长城汽车股份有限公司 | Gear shifting mechanism and transmission with same |
| CN105221742A (en) * | 2015-10-30 | 2016-01-06 | 重庆青山工业有限责任公司 | A kind of interior gearshift mechanism of six fast forward gears manual transmissions |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |