CN205207646U - A two shifting fork mechanism for rearmounted tertiary derailleur - Google Patents
A two shifting fork mechanism for rearmounted tertiary derailleur Download PDFInfo
- Publication number
- CN205207646U CN205207646U CN201521021179.5U CN201521021179U CN205207646U CN 205207646 U CN205207646 U CN 205207646U CN 201521021179 U CN201521021179 U CN 201521021179U CN 205207646 U CN205207646 U CN 205207646U
- Authority
- CN
- China
- Prior art keywords
- shift shaft
- declutch shift
- high speed
- groove
- gear declutch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a two shifting fork mechanism for rearmounted tertiary derailleur, including low -speed shelves declutch shift shaft, well top gear declutch shift shaft, gearbox housing, be equipped with low -speed shelves declutch shift shaft on the low -speed shelves shift fork, top gear declutch shift shaft in being equipped with on the well top gear shift fork, the central line of low -speed shelves declutch shift shaft is parallel with the central line of well top gear declutch shift shaft, and the front end of low -speed shelves declutch shift shaft, well top gear declutch shift shaft all extends gearbox housing, and low -speed shelves shift fork is close to the front end of low -speed shelves declutch shift shaft, and well top gear shift fork is close to the end of well top gear declutch shift shaft, the outside of low -speed shelves declutch shift shaft is equipped with two first recesses, and the outside of well top gear declutch shift shaft is equipped with three second recess, all is equipped with the declutch shift shaft control mechanism of location on gearbox housing on first recess, the second recess. The utility model is suitable for a rearmounted tertiary derailleur of tricycle, safe and reliable, the practicality is strong.
Description
Technical field
The utility model belongs to speed changer field, particularly relates to a kind of two shifting fork mechanisms for rearmounted three-range transmission.
Background technique
The pay load increase in demand of current tricycle, the load-carrying of tricycle rises to 2.5 tons from 0.5 ton, the increase of load-carrying not only requires that engine power and output torque increase, and the requirement of the variable-speed torque-converting ability of transmission system is also improved, existing speed changer is difficult to do not needing under the prerequisite excessively high increasing engine displacement, reaches that heavy duty is run dynamic, the fleet-footed requirement of underloading.Therefore, need to improve speed changer, owing to relating to the change of clutch position, the shifting fork mechanism of existing solenoidoperated cluthes can not be applicable to the rearmounted three-range transmission after improving.
Model utility content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of two shifting fork mechanisms for rearmounted three-range transmission, can not be applicable to the problems such as the rearmounted three-range transmission after improving for solving shifting fork mechanism in prior art.
For achieving the above object and other relevant objects, the utility model provides a kind of two shifting fork mechanisms for rearmounted three-range transmission, include bottom gear declutch shift shaft, high speed gear declutch shift shaft, case of transmission, bottom gear shift fork is provided with bottom gear declutch shift shaft, high speed gear shift fork is provided with high speed gear declutch shift shaft, the center line of bottom gear declutch shift shaft and high speed keep off the centerline parallel of declutch shift shaft, bottom gear declutch shift shaft, case of transmission is all extended in the front end of high speed gear declutch shift shaft, bottom gear shift fork is near the front end of bottom gear declutch shift shaft, high speed gear shift fork is near high speed gear shift fork the tip of the axis, the outside of bottom gear declutch shift shaft is provided with two the first grooves, and the outside of high speed gear declutch shift shaft is provided with three the second grooves, the first groove, the second groove is equipped with the declutch shift shaft control mechanism be positioned on case of transmission.
Further, declutch shift shaft control mechanism includes hold-down bolt, stage clip, steel ball, and steel ball is pressed on the first groove, the second groove by stage clip by hold-down bolt.
Further, the inner side of bottom gear declutch shift shaft, high speed gear declutch shift shaft is equipped with the 3rd groove, is provided with the spherical spring bolt that the 3rd groove that can keep off declutch shift shaft with bottom gear declutch shift shaft or high speed engages between bottom gear declutch shift shaft, high speed gear declutch shift shaft.
Further, bottom gear declutch shift shaft keeps off the centerline of the second groove that declutch shift shaft mediates on same straight line near the center line of the first groove of bottom gear declutch shift shaft end and high speed.
Further, center line and bottom gear declutch shift shaft, the high speed of the second groove high speed gear declutch shift shaft mediated keep off the centerline of the 3rd groove inside declutch shift shaft on same straight line.
Further, the central axis of the second groove high speed gear declutch shift shaft mediated is in the center line of high speed gear declutch shift shaft.
Further, bottom gear declutch shift shaft, high speed are kept off between declutch shift shaft and case of transmission and are all passed through oil sealing sealing.
As mentioned above, the utility model has following beneficial effect: the rearmounted three-range transmission that can be applicable to tricycle of the present utility model, declutch shift shaft control mechanism is separately positioned on the outside of bottom gear declutch shift shaft, high speed gear declutch shift shaft, adapt with the structure of case of transmission, can not produce position dry and astringent, spherical spring bolt conservative control two declutch shift shafts inside bottom gear declutch shift shaft, high speed gear declutch shift shaft switch in order, there will not be the problem that gear overlaps, safe and reliable, practical.Bottom gear shift fork is near the front end of bottom gear declutch shift shaft, and high speed gear shift fork, near high speed gear shift fork the tip of the axis, makes two shift forks to combine by successfully corresponding on speed changer clutch, the action of solenoidoperated cluthes.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the utility model embodiment.
Piece mark explanation
4, high speed gear shift fork
14, bottom gear shift fork
16, high speed gear declutch shift shaft
17, bottom gear declutch shift shaft
18, hold-down bolt
19, stage clip
20, steel ball
21, the first groove
23, spherical spring bolt
24, the second groove
26, case of transmission
27, the 3rd groove
28, oil sealing
Embodiment
By particular specific embodiment, mode of execution of the present utility model is described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
In order to can the utility model be described in detail, next the two shifting fork mechanisms for rearmounted three-range transmission of the present utility model are illustrated:
As shown in Figure 1, a kind of two shifting fork mechanisms for rearmounted three-range transmission, include bottom gear declutch shift shaft 17, high speed gear declutch shift shaft 16, case of transmission 26, bottom gear shift fork 14 is provided with bottom gear declutch shift shaft 17, high speed gear shift fork 4 is provided with high speed gear declutch shift shaft 16, the center line of bottom gear declutch shift shaft 17 and high speed keep off the centerline parallel of declutch shift shaft 16, bottom gear declutch shift shaft 17, case of transmission 26 is all extended in the front end of high speed gear declutch shift shaft 16, bottom gear shift fork 14 is near the front end of bottom gear declutch shift shaft 17, bottom gear shift fork 14 can be combined by the bottom gear clutch on rearmounted three-range transmission, high speed gear shift fork 4 is near the end of high speed gear declutch shift shaft 16, make high speed keep off shift fork 4 high speed on rearmounted three-range transmission to keep off clutch and be combined, the outside of bottom gear declutch shift shaft 17 is provided with two the first grooves 21, and the outside of high speed gear declutch shift shaft 16 is provided with on three the second groove 24, first groove 21, second grooves 24 and is equipped with the declutch shift shaft control mechanism be positioned on case of transmission 26.
Declutch shift shaft control mechanism includes hold-down bolt 18, stage clip 19, steel ball 20, and steel ball 20 is pressed on the first groove 21, second groove 24 by stage clip 19 by hold-down bolt 18.
The inner side of bottom gear declutch shift shaft 17, high speed gear declutch shift shaft 16 is equipped with the 3rd groove 27, is provided with the spherical spring bolt 23 that the 3rd groove 27 that can keep off declutch shift shaft 16 with bottom gear declutch shift shaft 17 or high speed engages between bottom gear declutch shift shaft 17, high speed gear declutch shift shaft 16.Bottom gear declutch shift shaft 17 keeps off the centerline of the second groove 24 that declutch shift shaft 16 mediates on same straight line near the center line of the first groove 21 of bottom gear declutch shift shaft 17 end and high speed.
Center line and bottom gear declutch shift shaft 17, the high speed of the second groove 24 that high speed gear declutch shift shaft 16 mediates keep off the centerline of the 3rd groove 27 inside declutch shift shaft 16 on same straight line, the through hole making to locate positioning compression bolt 18 on the through hole of spherical spring bolt 23 and case of transmission 26 is on same straight line, can single forming during production, also be conducive to assembling simultaneously, quick and convenient, manufacturing efficiency is high.The central axis of the second groove 24 that high speed gear declutch shift shaft 16 mediates, in the center line of high speed gear declutch shift shaft 16, is conducive to steel ball 20, spherical spring bolt 23 compresses bottom gear declutch shift shaft 17 or high speed gear declutch shift shaft 16.All sealed by oil sealing 28 between bottom gear declutch shift shaft 17, high speed gear declutch shift shaft 16 and case of transmission 26, promote the lubrication of declutch shift shaft, effectively avoid the leakage of lubricant oil.
The second groove 24 that bottom gear declutch shift shaft 17 mediates on the first groove 21 of bottom gear declutch shift shaft 17 end, high speed gear declutch shift shaft 16 is gearshift transition slot, i.e. neutral locating slot, the first groove 21 near bottom gear shift fork 14 on bottom gear declutch shift shaft 17 is bottom gear locating slot, on high speed gear declutch shift shaft 16, the second groove 24 of close high speed gear declutch shift shaft 16 front end is top gear locating slot, and on high speed gear declutch shift shaft 16, the second groove 24 of close high speed gear declutch shift shaft 16 end is middle speed gear locating slot.
When speed changer is in neutral, steel ball 20 is pressed in the second groove 24 that bottom gear declutch shift shaft 17 mediates on the first groove 21 of bottom gear declutch shift shaft 17 end, high speed gear declutch shift shaft 16 respectively, spherical spring bolt 23 is vacant between bottom gear declutch shift shaft 17, high speed gear declutch shift shaft 16, bottom gear clutch on speed changer, high speed gear clutch can not engage with the respective gears of side, now can add gear fast according to the travelling speed of reality.
When steel ball 20 is pressed on second groove 24 (i.e. the neutral locating slot) that high speed gear declutch shift shaft 16 mediates, bottom gear declutch shift shaft 17 can switch to steel ball 20 and be pressed on the first groove 21 (i.e. bottom gear locating slot) of close bottom gear shift fork 14 on bottom gear declutch shift shaft 17, bottom gear clutch stirred by bottom gear shift fork 14 on bottom gear declutch shift shaft 17, it is made to be combined with bottom gear center tooth, realize low cruise, heavy duty is run dynamic.Now spherical spring bolt 23 is pressed on the 3rd groove 27 by the side of high speed gear declutch shift shaft 16, spherical spring bolt 23 leans on the side of bottom gear declutch shift shaft 17 and the 3rd groove 27 to stagger, spherical spring bolt 23 is pressed on the outer wall of bottom gear declutch shift shaft 17, high speed gear declutch shift shaft 16 is compressed spacing by spherical spring bolt 23, can not move axially, namely can not shift gears, must bottom gear declutch shift shaft 17 switch back steel ball 20 be pressed on bottom gear declutch shift shaft 17 near bottom gear declutch shift shaft 17 end the first groove 21 state after, high speed gear declutch shift shaft 16 just can move axially, realize gearshift.
Bottom gear declutch shift shaft 17 switch back steel ball 20 be pressed on bottom gear declutch shift shaft 17 near bottom gear declutch shift shaft 17 end the first groove 21 on after, high speed gear declutch shift shaft 16 can switch to steel ball 20 and be pressed on the second groove 24 (namely speed gear locating slot) of close high speed gear declutch shift shaft 16 end on high speed gear declutch shift shaft 16, high speed gear clutch 5 stirred by high speed gear shift fork 4 on high speed gear declutch shift shaft 16, make it be combined with middle speed gear driving tooth, realize middling speed and run.
Bottom gear declutch shift shaft 17 switch back steel ball 20 be pressed on bottom gear declutch shift shaft 17 near bottom gear declutch shift shaft 17 end the first groove 21 on after, high speed gear declutch shift shaft 16 can also switch to steel ball 20 and be pressed on the second groove 24 (i.e. top gear locating slot) of close high speed gear declutch shift shaft 16 front end on high speed gear declutch shift shaft 16, high speed gear clutch stirred by high speed gear shift fork 4 on high speed gear declutch shift shaft 16, it is made to be combined with middle speed gear driving tooth, realize high speed operation, underloading runs a good foot.
When high speed gear declutch shift shaft 16 switches to middle speed gear or top gear, bottom gear declutch shift shaft 17 is compressed spacing by spherical spring bolt 23, can not move axially, namely can not shift gears, must high speed keep off declutch shift shaft 16 switch back steel ball 20 be pressed on that on high speed gear declutch shift shaft 16, the second groove 24 (i.e. neutral locating slot) of mediating is upper time, bottom gear declutch shift shaft 17 just can move axially, and realizes shifting gears, this structure effectively avoids gear mispairing, and gear handover security is reliable.
In sum, the utility model is applicable to the rearmounted three-range transmission of tricycle, safe and reliable, practical.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (7)
1. the two shifting fork mechanisms for rearmounted three-range transmission, it is characterized in that: include bottom gear declutch shift shaft (17), high speed gear declutch shift shaft (16), case of transmission (26), bottom gear shift fork (14) is provided with bottom gear declutch shift shaft (17), high speed gear shift fork (4) is provided with high speed gear declutch shift shaft (16), the center line of bottom gear declutch shift shaft (17) and high speed keep off the centerline parallel of declutch shift shaft (16), bottom gear declutch shift shaft (17), case of transmission (26) is all extended in the front end of high speed gear declutch shift shaft (16), bottom gear shift fork (14) is near the front end of bottom gear declutch shift shaft (17), high speed gear shift fork (4) is near the end of high speed gear declutch shift shaft (16), the outside of bottom gear declutch shift shaft (17) is provided with two the first grooves (21), the outside of high speed gear declutch shift shaft (16) is provided with three the second grooves (24), and the first groove (21), the second groove (24) are equipped with the declutch shift shaft control mechanism be positioned on case of transmission (26).
2. the two shifting fork mechanisms for rearmounted three-range transmission according to claim 1, it is characterized in that: declutch shift shaft control mechanism includes hold-down bolt (18), stage clip (19), steel ball (20), steel ball (20) is pressed on the first groove (21), the second groove (24) by stage clip (19) by hold-down bolt (18).
3. the two shifting fork mechanisms for rearmounted three-range transmission according to claim 1, it is characterized in that: the inner side of bottom gear declutch shift shaft (17), high speed gear declutch shift shaft (16) is equipped with the 3rd groove (27), between bottom gear declutch shift shaft (17), high speed gear declutch shift shaft (16), be provided with the spherical spring bolt (23) that the 3rd groove (27) that can keep off declutch shift shaft (16) with bottom gear declutch shift shaft (17) or high speed engages.
4. the two shifting fork mechanisms for rearmounted three-range transmission according to claim 1, is characterized in that: center line and the high speed of upper the first groove (21) near bottom gear declutch shift shaft (17) end of bottom gear declutch shift shaft (17) keep off the centerline of the second groove (24) that declutch shift shaft (16) mediates on same straight line.
5. the two shifting fork mechanisms for rearmounted three-range transmission according to claim 4, is characterized in that: the center line of the second groove (24) that high speed gear declutch shift shaft (16) mediates and bottom gear declutch shift shaft (17), high speed keep off the centerline of the 3rd groove (27) of declutch shift shaft (16) inner side on same straight line.
6. the two shifting fork mechanisms for rearmounted three-range transmission according to claim 4, is characterized in that: the central axis of the second groove (24) that high speed gear declutch shift shaft (16) mediates keeps off the center line of declutch shift shaft (16) in high speed.
7. the two shifting fork mechanisms for rearmounted three-range transmission according to claim 1, is characterized in that: all sealed by oil sealing (28) between bottom gear declutch shift shaft (17), high speed gear declutch shift shaft (16) and case of transmission (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521021179.5U CN205207646U (en) | 2015-12-09 | 2015-12-09 | A two shifting fork mechanism for rearmounted tertiary derailleur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521021179.5U CN205207646U (en) | 2015-12-09 | 2015-12-09 | A two shifting fork mechanism for rearmounted tertiary derailleur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207646U true CN205207646U (en) | 2016-05-04 |
Family
ID=55845364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521021179.5U Expired - Fee Related CN205207646U (en) | 2015-12-09 | 2015-12-09 | A two shifting fork mechanism for rearmounted tertiary derailleur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485333A (en) * | 2015-12-09 | 2016-04-13 | 重庆先友科技开发有限公司 | Double-shifting-fork mechanism for rear-arranged three-stage transmission |
-
2015
- 2015-12-09 CN CN201521021179.5U patent/CN205207646U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485333A (en) * | 2015-12-09 | 2016-04-13 | 重庆先友科技开发有限公司 | Double-shifting-fork mechanism for rear-arranged three-stage transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20181209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |