CN205260763U - Cam formula derailleur of shifting - Google Patents
Cam formula derailleur of shifting Download PDFInfo
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- CN205260763U CN205260763U CN201520686009.2U CN201520686009U CN205260763U CN 205260763 U CN205260763 U CN 205260763U CN 201520686009 U CN201520686009 U CN 201520686009U CN 205260763 U CN205260763 U CN 205260763U
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Abstract
The utility model discloses a cam formula derailleur of shifting, including derailleur subassembly and cam gearshift, the derailleur subassembly includes that the odd number keeps off gear train and even number fender gear train, the cam gearshift keeps off a fork assembly that the gear train shifted gears, is used for controlling including being used for controlling the odd number that the even number keeps off the 2nd fork assembly that the gear train shifted gears and be used for driving a fork assembly and the 2nd fork assembly moves in turn and carries out the shifting cam of shifting gears, its compact structure, thus can having simplified the overall arrangement of derailleur spare part, effectively to reduce gear box casing long -pending.
Description
Technical field
The utility model relates to vehicle transmission field, specifically a kind of cam shift type speed changer.
Background technology
Along with social fast development, people are more and more to the functional requirement of motor vehicles, and usage space requires more next large, performance requirement is also more and more higher, in practice, gearbox needs gear shift winding machine speed changing effect, and this mechanism can control gearbox and realize predetermined running effect.
Along with the progress of technology, existing gearbox shifting mechanism also progressively develops into diversified trend, what have larger difference with conventional manual shift speed change mechanism is infinitely variable speeds and fluid drive, the gear of this two classes speed changer is affected by self structure not to be suitable in less speed changer, and the complex structure of gearshift, manufacturing cost is more expensive has determined that it is not suitable for simply, less speed changer, existing manual gear shift mechanism has simple in structure, low cost and other advantages is widely used in common mechanical, but existing manual gear shift mechanism is because its operation part has occupied very large space, not only affect the coordination of overall machinery, but also the space of intruder's miscellaneous part is arranged.
Therefore, for overcoming the above problems, need a kind of compact conformation, thereby the layout that can simplify speed changer parts effectively reduces the cam shift type speed changer of gearbox volume.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art, and a kind of compact conformation is provided, thereby the layout that can simplify speed changer parts effectively reduces the cam shift type speed changer of gearbox volume.
Cam shift type speed changer of the present utility model, comprises transmission assembly and cam gearshift, and described transmission assembly comprises odd number gear gear train and even number gear gear train; Described cam gearshift comprises the first pull-fork assembly for controlling the gearshift of odd number gear gear train, for controlling the second pull-fork assembly of even number gear gear train gearshift and for driving alternately mobile shifting cam of shifting gears of the first pull-fork assembly and the second pull-fork assembly;
Further, described shifting cam is cylindrical cam, and described the first pull-fork assembly and the second pull-fork assembly include shift fork and declutch shift shaft; On described declutch shift shaft, be fixed with the drive pin coordinating with cylinderic earn curve groove;
Further, the declutch shift shaft of the declutch shift shaft of described the first pull-fork assembly and the second pull-fork assembly is arranged in parallel and is respectively in radially both sides of cylindrical cam;
Further, described transmission assembly also comprises that output shaft and the mode with the circumferencial direction transmission that slides axially are matched with the first clutch collar and second clutch collar of described output shaft, and described the first pull-fork assembly and the second pull-fork assembly coordinate and shift gears with described the first clutch collar and the second clutch collar respectively;
Further, rotatable cooperation of described output shaft is provided with the driven moving gear of a gear, two gear driven gears, three gear driven gears and four gear driven gears, a described gear driven gear and three gear driven gears are respectively in the first clutch collar both sides, and described two gear driven gears and four gear driven gears are respectively in the second clutch collar both sides;
Further, described shift fork slides axially and is equipped with in described declutch shift shaft; Between described shift fork and declutch shift shaft, being provided with elastic force and described declutch shift shaft is moved back and forth and is shifted gears by this elastic force promotion shift fork;
Further, described elastic force comprises that spacing vertically mode is sheathed on the spring of declutch shift shaft, and described shift fork comprises and is respectively in the fork body that spring shaft coordinates with right sleeve and with gearshift clutch collar to the left sleeve of both sides;
Further, described declutch shift shaft is provided with chute vertically, and described chute is provided with and is slidably matched with it and for described shift fork is slided and carries out spacing left slider and right slide block along declutch shift shaft; Described spring is arranged between described left slider and right slide block.
The beneficial effects of the utility model are: cam shift type speed changer of the present utility model, utilize shifting cam self space structure feature to realize gearshift, shifting cam changes by the rotation implementation space phase place of self, realize thereby drive the first pull-fork assembly and the second pull-fork assembly alternately to move the gear switch of controlling respectively between odd number gear and even number gear, therefore can greatly simplify the structure of shift operating mechanism of speed changer, dwindle speed changer volume and made the layout of complete machine more reasonable.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of cam gearshift of the present utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, and as shown in the figure, the cam shift type speed changer of the present embodiment, comprises transmission assembly and cam gearshift, and described transmission assembly comprises odd number gear gear train and even number gear gear train, described cam gearshift comprises the first pull-fork assembly 16 for controlling the gearshift of odd number gear gear train, for controlling the second pull-fork assembly 17 of even number gear gear train gearshift and moving the shifting cam of shifting gears for driving the first pull-fork assembly 16 and the second pull-fork assembly 17 to replace, utilize shifting cam self space structure feature to realize gearshift, shifting cam changes by the rotation implementation space phase place of self, thereby drive the first pull-fork assembly 16 and the second pull-fork assembly 17 alternately to move and realize the gear switch of controlling respectively between odd number gear and even number gear, therefore can greatly simplify the structure of shift operating mechanism of speed changer, having dwindled speed changer volume makes the layout of complete machine more reasonable.
In the present embodiment, described shifting cam is cylindrical cam 2, and described the first pull-fork assembly 16 and the second pull-fork assembly 17 include shift fork and declutch shift shaft, on described declutch shift shaft, be fixed with the drive pin 1 coordinating with cylindrical cam 2 curved grooves, cylindrical cam 2 is members that have curved slot or make curved profile on the face of cylinder on cylinder end face, cylindrical cam 2 can be arranged in parallel with declutch shift shaft, cylindrical cam 2 changes by the rotation implementation space phase place of self, drive shift fork to realize the change of displacement by cylindrical cam 2 curved grooves, utilize cylindrical cam 2 to make shifter of transmission be moved the spatial rotational having become around self by existing space, thereby reduce the required arrangement space of gearshift, simplify speed changer structure.
In the present embodiment, the declutch shift shaft of the declutch shift shaft of described the first pull-fork assembly 16 and the second pull-fork assembly 17 is arranged in parallel and is respectively in radially both sides of cylindrical cam 2, this arrangement can improve the stressing conditions of cylindrical cam 2, can optimize again the space of shifter of transmission simultaneously and arrange.
In the present embodiment, described transmission assembly also comprises that output shaft 9 and the mode with the circumferencial direction transmission that slides axially are matched with the first clutch collar and second clutch collar of described output shaft 9, and described the first pull-fork assembly 16 and the second pull-fork assembly 17 coordinate and shift gears with described the first clutch collar and the second clutch collar respectively; On output shaft 9, be rotatably provided with driven gear, by driving combination that moving axially of the first connector 1511 and the second connector 15 can control each driven gear and output shaft 9 and separating.
In the present embodiment, rotatable cooperation of described output shaft 9 is provided with the driven moving gear of a gear, two gear driven gears 13, three gear driven gears 10 and four gear driven gears 14, a described gear driven gear 12 and three gear driven gears 10 are respectively in the first clutch collar both sides, described two gear driven gears 13 and four gear driven gears 14 are respectively in the second clutch collar both sides, by driving the first connector 1511 and the second connector 15 movement vertically can control respectively first gear, second gear, three gear gears and four gear gears and output shaft 9 alternately combinations.
In the present embodiment, described shift fork slides axially and is equipped with in described declutch shift shaft; Between described shift fork and declutch shift shaft, being provided with elastic force and described declutch shift shaft is moved back and forth and is shifted gears by this elastic force promotion shift fork, because the movement of selector fork is to promote by elastic force, therefore, clutch collar is entering in gear process, can effectively avoid speed changer in shift process, to occur mentioning, beating the phenomenons such as tooth, it is more easy and smooth-going to make into gear.
In the present embodiment, described elastic force comprises that spacing vertically mode is sheathed on the spring 5 of declutch shift shaft, described shift fork comprises the fork body that the left sleeve 3 that is respectively in spring 5 axial both sides coordinates with right sleeve 7 and with gearshift clutch collar, the position limiting structures such as annular groove can be set on declutch shift shaft to carry out spacing to sliding axially of spring 5, simultaneously, spring 5 two ends bullets peak between left sleeve 3 and right sleeve 7, when declutch shift shaft is moved to the left position limiting structure, promotion spring 5 right-hand members are moved to the left, simultaneously, spring 5 left ends move to left promotion shift fork to shift gears, in the time that shift fork meets obstructions, spring 5 is by compressed, the relative declutch shift shaft of shift fork occurs to slide to realize and steps down, in like manner known, declutch shift shaft moves right, and shift fork is subject to resistance and also can realizes and stepping down, and is not repeated at this.
In the present embodiment, described declutch shift shaft is provided with chute 6 vertically, and described chute 6 is provided with and is slidably matched with it and for described shift fork is slided and carries out spacing left slider 4 and right slide block 8 along declutch shift shaft; Described spring 5 is arranged between described left slider 4 and right slide block 8, spring 5 utilizes elastic force to promote left slider 4 and right slide block 8 relies on respectively left sleeve 3 and right sleeve 7, when declutch shift shaft is moved to the left chute 6 right sides, promotion spring 5 right-hand members are moved to the left, simultaneously, spring 5 left ends move to left promotion shift fork to shift gears, in the time that shift fork meets obstructions, spring 5 is by compressed, and the relative declutch shift shaft of shift fork occurs to slide to realize and steps down; In like manner known, declutch shift shaft moves right, and shift fork is subject to resistance and also can realizes and stepping down, and is not repeated at this.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (8)
1. a cam shift type speed changer, is characterized in that: comprise transmission assembly and cam gearshift, described transmission assembly comprises odd number gear gear train and even number gear gear train; Described cam gearshift comprises the first pull-fork assembly for controlling the gearshift of odd number gear gear train, for controlling the second pull-fork assembly of even number gear gear train gearshift and for driving alternately mobile shifting cam of shifting gears of the first pull-fork assembly and the second pull-fork assembly.
2. cam shift type speed changer according to claim 1, is characterized in that: described shifting cam is cylindrical cam, described the first pull-fork assembly and the second pull-fork assembly include shift fork and declutch shift shaft; On described declutch shift shaft, be fixed with the drive pin coordinating with cylinderic earn curve groove.
3. cam shift type speed changer according to claim 2, is characterized in that: the declutch shift shaft of the declutch shift shaft of described the first pull-fork assembly and the second pull-fork assembly is arranged in parallel and is respectively in radially both sides of cylindrical cam.
4. cam shift type speed changer according to claim 1, it is characterized in that: described transmission assembly also comprises that output shaft and the mode with the circumferencial direction transmission that slides axially are matched with the first clutch collar and second clutch collar of described output shaft, and described the first pull-fork assembly and the second pull-fork assembly coordinate and shift gears with described the first clutch collar and the second clutch collar respectively.
5. cam shift type speed changer according to claim 4, it is characterized in that: rotatable cooperation of described output shaft is provided with the driven moving gear of a gear, two gear driven gears, three gear driven gears and four gear driven gears, a described gear driven gear and three gear driven gears are respectively in the first clutch collar both sides, and described two gear driven gears and four gear driven gears are respectively in the second clutch collar both sides.
6. cam shift type speed changer according to claim 2, is characterized in that: described shift fork slides axially and is equipped with in described declutch shift shaft; Between described shift fork and declutch shift shaft, being provided with elastic force and described declutch shift shaft is moved back and forth and is shifted gears by this elastic force promotion shift fork.
7. cam shift type speed changer according to claim 6, it is characterized in that: described elastic force comprises that spacing vertically mode is sheathed on the spring of declutch shift shaft, described shift fork comprises and is respectively in the fork body that spring shaft coordinates with right sleeve and with gearshift clutch collar to the left sleeve of both sides.
8. cam shift type speed changer according to claim 7, is characterized in that: described declutch shift shaft is provided with chute vertically, and described chute is provided with and is slidably matched with it and for described shift fork is slided and carries out spacing left slider and right slide block along declutch shift shaft; Described spring is arranged between described left slider and right slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686009.2U CN205260763U (en) | 2015-09-07 | 2015-09-07 | Cam formula derailleur of shifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686009.2U CN205260763U (en) | 2015-09-07 | 2015-09-07 | Cam formula derailleur of shifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260763U true CN205260763U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686009.2U Active CN205260763U (en) | 2015-09-07 | 2015-09-07 | Cam formula derailleur of shifting |
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| Country | Link |
|---|---|
| CN (1) | CN205260763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118255A (en) * | 2019-05-29 | 2019-08-13 | 重庆隆鑫发动机有限公司 | A kind of vehicle and shift fork |
-
2015
- 2015-09-07 CN CN201520686009.2U patent/CN205260763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118255A (en) * | 2019-05-29 | 2019-08-13 | 重庆隆鑫发动机有限公司 | A kind of vehicle and shift fork |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |