CN202520885U - Inversion type variable speed control mechanism - Google Patents
Inversion type variable speed control mechanism Download PDFInfo
- Publication number
- CN202520885U CN202520885U CN2012201707088U CN201220170708U CN202520885U CN 202520885 U CN202520885 U CN 202520885U CN 2012201707088 U CN2012201707088 U CN 2012201707088U CN 201220170708 U CN201220170708 U CN 201220170708U CN 202520885 U CN202520885 U CN 202520885U
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- gear
- turning lever
- statement
- federally sponsored
- central gear
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Abstract
The utility mode an inversion type variable speed control mechanism which adopts the structure that a linkage part and a toggle gear are arranged at the axial center of a central wheel of a planetary gear system; a toggle rod and a control block are arranged in a groove of the linkage part and are pressed by a compressed spring; one end of the toggle rod is an incomplete gear; when an input shaft rotates reversely, the other end of the toggle rod drives the control block to rotate; when the input shaft rotates in the forward direction, the toggle rod returns to its initial position; a spiral spring is arranged on the linkage part to drive the linkage part to rotate around the axial center of the central wheel; and clutching claws are arranged at the periphery of the central wheel and are meshed with the gear of the central wheel. According to the utility model, the control block rotates under the action of the toggle gear and the toggle rod and drives the clutching claws to rotate through the linkage part so as to lock or loosen the central wheel of a variator, thereby realizing speed changing. Moreover, the speed ratio of the variator is changed along with the reverse of the input shaft, so that the control is convenient, with simple and reliable effect.
Description
Technical field
The utility model belongs to the electromechanical assembly class, relates to gear, particularly a kind of counter-rotating speed Control mechanism.
Background technique
The planetary pinion transmission is because compact structure is small and exquisite, and driving torque is used widely greatly.But the epicyclic train and the gear that design the more piece speed ratio are just very complicated, but also need the change control system of special additionaling power, and this has just limited its extensive use.
For example bicycle rear internal speed changer and middle shaft transmission, this is the small and exquisite and very practical speed changer of a kind of ten minutes, it is once the favor that the client occurs receiving.But because their sizes are very little, therefore, action how to control speed changer has just become a very important problem.If the mode with manual realizes speed change, need additional power and guide line, and the guide line requirement is very long, control mechanism also can be very complicated, implements the comparison difficulty.Controlling speed change as if the mode of stepping on bicycle then is a good method, can save many driving parts.
Summary of the invention
The task of the utility model provides a kind of counter-rotating speed Control mechanism, and this mechanism adopts imperfect gear, carries out action through the counter-rotating of input shaft, as long as the input shaft counter-rotating once, the speed ratio of speed changer just changes once, and convenient control is simple in structure and reliable.
The technical solution of the utility model is following:
A kind of counter-rotating speed Control mechanism; Said mechanism comprises the central gear of speed changer planetary gear train; Said mechanism also comprises turning lever, controll block, stage clip, STATEMENT OF FEDERALLY SPONSORED, several clutch pawls, handsetting gear and spiral spring, and wherein STATEMENT OF FEDERALLY SPONSORED and handsetting gear are arranged on the axle center of central gear;
Said STATEMENT OF FEDERALLY SPONSORED is provided with groove, and turning lever and the controll block that is connected with turning lever are set in groove;
Said handsetting gear and turning lever drive controll block and rotate; Stage clip is pressed and is put on turning lever and controll block; One end of turning lever is imperfect gear, and the other end of turning lever drives the controll block rotation during input shaft backward rotation, and turning lever is got back to initial position during the input shaft forward rotation;
Said spiral spring is arranged on the STATEMENT OF FEDERALLY SPONSORED, and rotate in STATEMENT OF FEDERALLY SPONSORED axle center around central gear under the effect of spiral spring;
Said clutch pawl is arranged on the periphery of central gear, and the clutch pawl is connected with locking with the gear teeth of central gear engageablely or unclamps central gear and realize speed change.
Said spiral spring has several, and several spiral springs are arranged on the outer rim of STATEMENT OF FEDERALLY SPONSORED.
The counter-rotating speed Control mechanism of the utility model is a kind of speed Control mechanism of epicyclic train, and this mechanism realizes speed change through the counter-rotating (being generally planet carrier) of input shaft.The principle of the utility model is that the whole gear that toos many or too much for use is realized the counter-rotating speed change, and whether the central gear of controlling planetary gear train with the clutch pawl rotates and obtain different speed ratios.If central gear unclamps, input shaft reverses once, and the clutch pawl of this mechanism is with the central gear locking of planetary gear train; Otherwise if central gear locks, then input shaft reverses once, and clutch pawl and central gear are thrown off, thereby have realized speed change.
The counter-rotating speed Control mechanism of the utility model carries out action through the counter-rotating of input shaft, as long as the input shaft counter-rotating once, the speed ratio of speed changer just changes once, convenient control.This mechanism adopts imperfect gear, and the control inversion or the angle of swing of controll block when stepping on make the angle of stepping on unrestricted, convenient control.As long as the angle of stepping on is simple and reliable greater than a small angle (as 30 °).
Description of drawings
Fig. 1 is the structural representation of a kind of speed Control mechanism of reversing of the utility model, the rotatable state of expression central gear.
Fig. 2 be the clutch pawl in Fig. 1 mechanism when central gear is pinned speed changer be in the phase diagram of another kind of speed ratio, expression central gear lock state.
Fig. 3 is that the controll block in Fig. 1 mechanism is rotated the motion of drive STATEMENT OF FEDERALLY SPONSORED, makes the location state diagram of clutch pawl and central gear disengagement, has shown the position of each part before reversing for the second time.
Fig. 4 representes speed changer if reverse, and handsetting gear drives turning lever again and controll block is rotated, and the location state diagram that clutch pawl and central gear are thrown off has shown the position of each part of counter-rotating back for the second time.
Fig. 5 is that the part of actual handsetting gear that uses of this mechanism and turning lever is amplified figure, demonstrates the profile of tooth of handsetting gear and turning lever.
Reference character:
1 is the central gear of planetary gear train, and 2 is spiral spring, and 3 is controll block, and 4 is turning lever, and 5 is stage clip, and 6 are the clutch pawl, and 7 is STATEMENT OF FEDERALLY SPONSORED, and 8 is handsetting gear.
Embodiment
Below in conjunction with accompanying drawing and embodiment a kind of counter-rotating speed Control mechanism of the utility model is elaborated.
Referring to Fig. 1 to Fig. 5; The utility model provides a kind of counter-rotating speed Control mechanism; This mechanism mainly is made up of central gear 1, turning lever 4, controll block 3, stage clip 5, STATEMENT OF FEDERALLY SPONSORED 7, several clutch pawls 6, handsetting gear 8 and the spiral spring 2 of speed changer planetary gear train, and wherein STATEMENT OF FEDERALLY SPONSORED 7 and handsetting gear 8 are arranged on the axle center of central gear 1.
STATEMENT OF FEDERALLY SPONSORED 7 is provided with groove, and turning lever 4 and controll block 3 are set in groove, and turning lever 4 is connected with controll block 3.
STATEMENT OF FEDERALLY SPONSORED 7 has two relatively-stationary positions; One of them position is the position corresponding to central gear 1 locking; This position is that STATEMENT OF FEDERALLY SPONSORED 7 drives the position of clutch pawl 6 with central gear 1 locking under the effect of spiral spring 2; Another position is that controll block 3 is rotated 7 motions of drive STATEMENT OF FEDERALLY SPONSORED, the position that clutch pawl 6 and central gear 1 are thrown off.
The counter-rotating speed Control mechanism of the utility model drives controll blocks 3 through handsetting gear 8 and turning lever 4 and rotates, and controll block 3 drives several clutch pawls 6 through STATEMENT OF FEDERALLY SPONSORED 7 again and rotates, and clutch pawl 6 is with central gear 1 locking of speed changer or unclamp to realize speed change.When clutch pawl 6 under the effect of STATEMENT OF FEDERALLY SPONSORED 7 during with central gear 1 locking, speed changer is with a kind of speed ratio work, when clutch pawl 6 under the effect of STATEMENT OF FEDERALLY SPONSORED 7 during with central gear 1 disengagement, speed changer is with another kind of speed ratio work.
The speed changer that constitutes with planetary gear train more below is an example, specifies the technological scheme of the utility model.Whether this speed changer is based on central gear locking with planetary gear train and realizes speed change.
STATEMENT OF FEDERALLY SPONSORED 7 is controlled the effect of piece and spring, and two relatively-stationary positions are arranged.One of them position is the position corresponding to central gear 1 locking, and like Fig. 2, shown in 3, this position is that STATEMENT OF FEDERALLY SPONSORED 7 drives the position of clutch pawl 6 with central gear 1 locking under the effect of spiral spring 2.Like Fig. 1, shown in 4, another position is that controll block 3 is rotated 7 motions of drive STATEMENT OF FEDERALLY SPONSORED, the position that clutch pawl 6 and central gear 1 are thrown off.STATEMENT OF FEDERALLY SPONSORED 7 can drive several clutch pawls 6 and rotate synchronously, and its two relative fixed positions correspond respectively to two kinds of different speed ratios of speed changer.
The relation object of clutch pawl 6 and speed changer central gear 1 is similar to the relation of ratchet and ratchet.When clutch pawl 6 under the effect of STATEMENT OF FEDERALLY SPONSORED 7 during with central gear 1 locking, speed changer is with a kind of speed ratio work, when clutch pawl 6 under the effect of STATEMENT OF FEDERALLY SPONSORED 7 during with central gear 1 disengagement, speed changer is with another kind of speed ratio work.
The working principle of the counter-rotating speed Control mechanism of the utility model is such: the position of Fig. 1 representes when being input shaft forward rotation turning lever 4 residing low order ends.If clutch this moment pawl 6 is thrown off with central gear 1, central gear 1 can rotate, and spiral spring 2 is in extended state.Speed changer is with a kind of speed ratio work.At this moment, if the input shaft counter-rotating just can change speed ratio.
A recovery springs (not drawing among the figure) is installed, on the turning lever 4 under the effect of recovery springs, no matter the position of turning lever 4 is at right-hand member or at left end, always the power of spring attempts turning lever 4 is pulled to the neutral position.So in the position of Fig. 1, during the input shaft counter-rotating, turning lever 4 swing left under the effect of recovery springs at the beginning.Handsetting gear 8 rotates with input shaft, after turning lever 4 turns left a little angle, and its imperfect gear and handsetting gear 8 engagements.Handsetting gear 8 drives turning lever 4 to be continued to turn left, and turning lever 4 drives controll block 3 and rotates around the central shaft of controll block 3 together, and controll block 3 breaks away from STATEMENT OF FEDERALLY SPONSORED 7.Rotate in STATEMENT OF FEDERALLY SPONSORED 7 axle center around central gear 1 under the effect of spiral spring 2, in rotation process, drives five clutch pawls 6 and rotate around their running shafts separately.When controll block 3 turns over 90 °, (reverse about 30 °), clutch pawl 6 pins (see figure 2) with central gear 1, and speed changer is in the state of another kind of speed ratio.
Because turning lever 4 is imperfect gears, therefore, need only reverse angle greater than 30 °, turning lever 4 just no longer rotates, and the angle of controll block 3 rotations at this moment is 90 °.
The effect of the structure of turning lever 4 and stage clip 5 has determined that only it could drive controll block 3 rotations to turning lever 4 when counter-rotating.During the input shaft forward rotation, turning lever is can not drive controll block 3 to rotate.But during the input shaft forward rotation, under the common effect of recovery springs and handsetting gear 8, turning lever 4 can be got back to the position shown in Fig. 1, waits for when reversing speed change again next time, and is as shown in Figure 3.At this moment like counter-rotating, handsetting gear 8 drives turning lever 4 again, and 3 rotations make clutch pawl 6 and central gear 1 disengagement with controll block, and are as shown in Figure 4, realize another speed change.At this moment spiral spring 2 is in extended state again.
The forward rotation again in the position shown in Fig. 4, control mechanism is got back to state shown in Figure 1 again.
Fig. 5 has shown the profile of tooth and the matching relationship of handsetting gear 8 and turning lever 4.
In sum, the counter-rotating speed Control mechanism of the utility model adopts imperfect gear, carries out action through the counter-rotating of input shaft, as long as the input shaft counter-rotating once, the speed ratio of speed changer just changes once, and convenient control is simple in structure and reliable.
More than through the speed changer of planetary gear train the structure and the principle thereof of the utility model have been described.The engineers and technicians of related domain should be known in the counter-rotating gear of introducing of being not only here, have also introduced a kind of principle of the speed change of reversing, and illustrated gear is not the qualification to the utility model.As long as realizing that with imperfect gear counter-rotating or controll block rotates in the scope of control speed change, all will be the scope of the utility model claim to any modification of top embodiment.
Claims (2)
1. counter-rotating speed Control mechanism; Said mechanism comprises the central gear of speed changer planetary gear train; It is characterized in that: said mechanism also comprises turning lever, controll block, stage clip, STATEMENT OF FEDERALLY SPONSORED, several clutch pawls, handsetting gear and spiral spring, and wherein STATEMENT OF FEDERALLY SPONSORED and handsetting gear are arranged on the axle center of central gear;
Said STATEMENT OF FEDERALLY SPONSORED is provided with groove, and turning lever and the controll block that is connected with turning lever are set in groove;
Said handsetting gear and turning lever drive controll block and rotate; Stage clip is pressed and is put on turning lever and controll block; One end of turning lever is imperfect gear, and the other end of turning lever drives the controll block rotation during input shaft backward rotation, and turning lever is got back to initial position during the input shaft forward rotation;
Said spiral spring is arranged on the STATEMENT OF FEDERALLY SPONSORED, and rotate in STATEMENT OF FEDERALLY SPONSORED axle center around central gear under the effect of spiral spring;
Said clutch pawl is arranged on the periphery of central gear, and the clutch pawl is connected with locking with the gear teeth of central gear engageablely or unclamps central gear and realize speed change.
2. counter-rotating speed Control according to claim 1 mechanism is characterized in that said spiral spring has several, and several spiral springs are arranged on the outer rim of STATEMENT OF FEDERALLY SPONSORED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201707088U CN202520885U (en) | 2012-04-22 | 2012-04-22 | Inversion type variable speed control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201707088U CN202520885U (en) | 2012-04-22 | 2012-04-22 | Inversion type variable speed control mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520885U true CN202520885U (en) | 2012-11-07 |
Family
ID=47103837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201707088U Expired - Fee Related CN202520885U (en) | 2012-04-22 | 2012-04-22 | Inversion type variable speed control mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602503A (en) * | 2012-04-21 | 2012-07-25 | 叶雪峰 | Reverse speed change control mechanism |
-
2012
- 2012-04-22 CN CN2012201707088U patent/CN202520885U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602503A (en) * | 2012-04-21 | 2012-07-25 | 叶雪峰 | Reverse speed change control mechanism |
| CN102602503B (en) * | 2012-04-21 | 2013-07-17 | 叶雪峰 | Reverse speed change control mechanism |
| WO2013155649A1 (en) * | 2012-04-21 | 2013-10-24 | Ye Xuefeng | Reverse rotation variable speed control mechanism |
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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: 20121107 Termination date: 20150422 |
|
| EXPY | Termination of patent right or utility model |