CN205047817U - High accuracy shift fork gearshift - Google Patents
High accuracy shift fork gearshift Download PDFInfo
- Publication number
- CN205047817U CN205047817U CN201520544356.1U CN201520544356U CN205047817U CN 205047817 U CN205047817 U CN 205047817U CN 201520544356 U CN201520544356 U CN 201520544356U CN 205047817 U CN205047817 U CN 205047817U
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- China
- Prior art keywords
- gear
- fork
- shifting
- shift
- shift fork
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Abstract
The utility model discloses a high accuracy shift fork gearshift, include fork assembly, be used for the drive thereby fork assembly reciprocating motion carries out the power component who shifts and is used for detecting the shift fork position detecting device of fork assembly position control power component action, the utility model discloses a self shifter mechanism, the component of shifting is few, the reaction of shifting is fast, has the higher precision of shifting simultaneously to it is not in place to avoid shifting.
Description
Technical field
The utility model relates to speed changer field, specifically a kind of highi degree of accuracy shifting fork gear-shifting mechanism.
Background technique
The gearshift of existing two-shift automatic variable speed automobile mainly comprises gear shifting motor, reducing gear, shift fork drive unit (shift block), declutch shift shaft, shift fork composition, wherein, reducing gear many employings worm gear, worm reduction gear, shift block many employings cam mechanism.When gear shift, by shift motor providing source power or rotating speed, after reducing gear slows down, be converted to the rotary motion of cam, the rotation forces of cam is enclosed within the shift fork rectilinear movement on declutch shift shaft, and then realizes gear switch.Adopt this structure, many owing to participating in gear shift original paper quantity, transferring power is complicated, add the rate of breakdown of gearshift, worm and gear, the manufacturing and designing of cam mechanism also exist quality of product hidden danger, and worm and gear, cam mechanism difficulty of processing are large, manufacture cost is high.In addition, when gear shift, due to cam mechanism generation excessive wear after accuracy of manufacturing factor or Long-Time Service, always there is gap in cam mechanism, thus the phenomenon easily causing gear shift not in place.
Therefore, for overcoming the above problems, needing that a kind of shifting element is few, gearshift reaction is fast, there is higher gearshift precision simultaneously, thus avoid highi degree of accuracy shifting fork gear-shifting mechanism not in place of shifting gears.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, provides that a kind of shifting element is few, gearshift reaction is fast, has higher gearshift precision simultaneously, thus avoid highi degree of accuracy shifting fork gear-shifting mechanism not in place of shifting gears.
Highi degree of accuracy shifting fork gear-shifting mechanism of the present utility model, comprises pull-fork assembly, for driving described pull-fork assembly to move back and forth to carry out the Power Component of shifting gears and for detecting pull-fork assembly position thus controlling the shift fork position detecting device of Power Component action;
Further, described shift fork position detecting device comprises the magnetic induction part that is arranged on pull-fork assembly and is arranged at speed changer for detecting the sensor of described magnetic induction part position;
Further, described pull-fork assembly comprises declutch shift shaft and slides axially and is matched with the shift fork of described declutch shift shaft; Be provided with elastic force between described declutch shift shaft and shift fork and moved back and forth vertically by this resilient force shift fork;
Further, described declutch shift shaft is provided with outside thread; Described Power Component comprise around axial single-degree-of-freedom be rotatably arranged at speed changer and with the driven gear of described declutch shift shaft by screw-thread fit;
Further, described Power Component also comprises gear shifting drive motor and transmission is equipped with in described gear shifting drive motor output shaft and the driving gear engaged with described driven gear;
Further, described elastic force comprises and being arranged on the left of shift fork for promoting left spring that shift fork moves right and being arranged on the right side of shift fork for promoting the right spring that shift fork is moved to the left;
Further, be provided with sliding bearing between described shift fork and declutch shift shaft and be slidably matched by this sliding bearing and declutch shift shaft;
Highi degree of accuracy shifting fork gear-shifting mechanism of the present utility model also comprises the driving shaft arranged in parallel with declutch shift shaft, the combined cover being matched with described driving shaft in the mode of the circumferencial direction transmission that slides axially, the first gear being rotatably matched with described gearshift driving shaft and the second gear; Described combined cover to be arranged between the first gear and the second gear and to drive it to move vertically by shift fork;
Further, described sensor comprises the first sensor for judging combined cover and the first gear engagement and the second sensor for judging combined cover and the second gear engagement.
The beneficial effects of the utility model are: automatic gearshift of the present utility model, utilize motor, the equipment such as cylinder realize gearshift as Power Component with the to-and-fro motion of shift fork assembly, shift fork position detecting device can adopt the position detecting elements such as existing magnetic-inductive device to detect the position information of pull-fork assembly, control unit for controlling Power Component action accepts this position information and judges whether the gear shift action of pull-fork assembly puts in place and control the start and stop of Power Component by this position information, therefore, utilize the rich position information that wipes the sweat of shift fork position probing collection can ensure shift of transmission accuracy of action and reliability with the action controlling Power Component.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, the highi degree of accuracy shifting fork gear-shifting mechanism of the present embodiment, comprise pull-fork assembly, the Power Component carrying out shifting gears is moved back and forth and for detecting pull-fork assembly position thus controlling the shift fork position detecting device of Power Component action for driving described pull-fork assembly, the automatic gearshift of the present embodiment, utilize motor 3, the equipment such as cylinder realize gearshift as Power Component with the to-and-fro motion of shift fork assembly, shift fork position detecting device can adopt existing position detecting element such as magnetic-inductive device 13 grade to detect the position information of pull-fork assembly, control unit for controlling Power Component action accepts this position information and judges whether the gear shift action of pull-fork assembly puts in place and control the start and stop of Power Component by this position information, therefore, utilize the rich position information that wipes the sweat of shift fork position probing collection can ensure shift of transmission accuracy of action and reliability with the action controlling Power Component.
In the present embodiment, described shift fork position detecting device comprises the magnetic induction part that is arranged on pull-fork assembly and is arranged at speed changer for detecting the sensor 1 of described magnetic induction part position, sensor 1 is provided with two and correspondence is arranged at two engagement positios of pull-fork assembly respectively, after pull-fork assembly drives gear shift combined cover 8 to engage, sensor 1 receives magnetic signal and sends control signal and controls Power Component stopping driving, avoids gearshift.
In the present embodiment, described pull-fork assembly comprises declutch shift shaft 12 and slides axially and is matched with the shift fork of described declutch shift shaft 12; Be provided with elastic force between described declutch shift shaft 12 and shift fork and moved back and forth vertically by this resilient force shift fork; Shift fork drives it to move back and forth by elastic force, and then drive clutch collar to move back and forth to realize gearshift, resilient force is passed through in movement due to selector fork, therefore, clutch collar is entering in gear process, can effectively avoid speed changer to occur mentioning, beating the phenomenons such as tooth in shift process, it is more easy and smooth-going to make into gear.
In the present embodiment, described declutch shift shaft 12 is provided with outside thread, described Power Component comprise around axial single-degree-of-freedom be rotatably arranged at speed changer and with the driven gear 11 of described declutch shift shaft 12 by screw-thread fit, Power Component can adopt motor 3 grade to export the power plant of rotary motion, and its clutch end and driven gear 11 are in transmission connection, rotate by driving driven gear 11, screw thread can be utilized to carry out power screw thus shift fork axle 12 moves vertically, driven gear 11 is installed on case of transmission by bearing 10, axial float is there is for avoiding driven gear 11, can install on shaft part at the bearing of driven gear 11 and a back-up ring is set, driven gear 11 and bearing 10 inner ring is made to realize axial restraint.
In the present embodiment, described Power Component also comprises gear shifting drive motor 3 and transmission is equipped with in described gear shifting drive motor 3 output shaft and the driving gear 2 engaged with described driven gear 11, moves back and forth vertically by controlling drive motor 3 forward and reverse shift fork axle 12.
In the present embodiment, described elastic force comprises and being arranged on the left of shift fork for promoting left spring 4 that shift fork moves right and being arranged on the right side of shift fork for promoting the right spring 5 that shift fork is moved to the left, left spring 4 left end is undertaken spacing by the shaft shoulder of declutch shift shaft 12, and left spring 4 right-hand member peaks on the left of shift fork; Declutch shift shaft 12 can be arranged a snap ring on the right side of right spring 5, peak on the right side of shift fork on the left of right spring 5, when shifting gears, move right declutch shift shaft 12, and now, declutch shift shaft 12 shaft shoulder promotes left spring 4 and moves to right, promoting shift fork does flexible mobile, if now clutch collar and shelves tooth are not combined, right spring 5 linearly will promote shift fork by self-characteristic, thus the shelves toe joint trap be enclosed within shift fork and shelves tooth carry out in conjunction with complete.Left spring 4 returns to free state, in like manner utilizes right spring 5 shift fork to move to left and shifts gears, be not repeated at this.
In the present embodiment, be provided with sliding bearing 6 between described shift fork and declutch shift shaft 12 and be slidably matched by this sliding bearing 6 and declutch shift shaft 12, utilizing sliding bearing 6 effectively can reduce force of sliding friction between shift fork and declutch shift shaft 121, thus reduce gearshift resistance.
The first gear 9 and the second gear 7 that highi degree of accuracy shifting fork gear-shifting mechanism of the present utility model also comprises the driving shaft arranged in parallel with declutch shift shaft 12, is matched with the combined cover 8 of described driving shaft, is rotatably matched with described gearshift driving shaft in the mode of the circumferencial direction transmission that slides axially; Described combined cover 8 to be arranged between the first gear 9 and the second gear 7 and to drive it to move vertically by shift fork, combined cover 8 can be driven to move axially relative to driving shaft thus alternately engage with the first gear 9 and the second gear 7, to realize gearshift by shift fork.
In the present embodiment, described sensor comprises for judging the first sensor that combined cover 9 engages with the first gear 9 and the second sensor for judging combined cover 8 and the second gear engagement 7, after clutch collar 8 and the first gear engagement 9, first sensor receives the induced signal of magnetic induction part, thus judge that clutch collar 8 and the first gear engagement 9 complete and control motor stalling, avoided gearshift, in like manner the engaging process of known clutch collar 8 and the second gear 7, is not repeated at this.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (7)
1. a highi degree of accuracy shifting fork gear-shifting mechanism, is characterized in that: comprise pull-fork assembly, for driving described pull-fork assembly to move back and forth to carry out the Power Component of shifting gears and for detecting pull-fork assembly position thus controlling the shift fork position detecting device of Power Component action; Described pull-fork assembly comprises declutch shift shaft and slides axially and is matched with the shift fork of described declutch shift shaft; Be provided with elastic force between described declutch shift shaft and shift fork and moved back and forth vertically by this resilient force shift fork, described declutch shift shaft is provided with outside thread; Described Power Component comprise around axial single-degree-of-freedom be rotatably arranged at speed changer and with the driven gear of described declutch shift shaft by screw-thread fit.
2. highi degree of accuracy shifting fork gear-shifting mechanism according to claim 1, is characterized in that: described shift fork position detecting device comprises the magnetic induction part that is arranged on pull-fork assembly and is arranged at speed changer for detecting the sensor of described magnetic induction part position.
3. highi degree of accuracy shifting fork gear-shifting mechanism according to claim 1, is characterized in that: described Power Component also comprises gear shifting drive motor and transmission is equipped with in described gear shifting drive motor output shaft and the driving gear engaged with described driven gear.
4. highi degree of accuracy shifting fork gear-shifting mechanism according to claim 1, is characterized in that: described elastic force comprises and being arranged on the left of shift fork for promoting left spring that shift fork moves right and being arranged on the right side of shift fork for promoting the right spring that shift fork is moved to the left.
5. highi degree of accuracy shifting fork gear-shifting mechanism according to claim 1, be is characterized in that: be provided with sliding bearing between described shift fork and declutch shift shaft and be slidably matched by this sliding bearing and declutch shift shaft.
6. highi degree of accuracy shifting fork gear-shifting mechanism according to claim 1, is characterized in that: also comprise the driving shaft arranged in parallel with declutch shift shaft, the combined cover being matched with described driving shaft in the mode of the circumferencial direction transmission that slides axially, the first gear being rotatably matched with described gearshift driving shaft and the second gear; Described combined cover to be arranged between the first gear and the second gear and to drive it to move vertically by shift fork.
7. highi degree of accuracy shifting fork gear-shifting mechanism according to claim 2, is characterized in that: described sensor comprises the first sensor for judging combined cover and the first gear engagement and the second sensor for judging combined cover and the second gear engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520544356.1U CN205047817U (en) | 2015-07-24 | 2015-07-24 | High accuracy shift fork gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520544356.1U CN205047817U (en) | 2015-07-24 | 2015-07-24 | High accuracy shift fork gearshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047817U true CN205047817U (en) | 2016-02-24 |
Family
ID=55341397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520544356.1U Expired - Fee Related CN205047817U (en) | 2015-07-24 | 2015-07-24 | High accuracy shift fork gearshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047817U (en) |
-
2015
- 2015-07-24 CN CN201520544356.1U patent/CN205047817U/en not_active Expired - Fee Related
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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: 20160224 Termination date: 20170724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |