CN201944205U - Electromagnetic control power-shift gearbox with overrunning coupler characteristic - Google Patents
Electromagnetic control power-shift gearbox with overrunning coupler characteristic Download PDFInfo
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- CN201944205U CN201944205U CN2011200539907U CN201120053990U CN201944205U CN 201944205 U CN201944205 U CN 201944205U CN 2011200539907 U CN2011200539907 U CN 2011200539907U CN 201120053990 U CN201120053990 U CN 201120053990U CN 201944205 U CN201944205 U CN 201944205U
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- cam
- shift fork
- retaining driven
- driven gears
- fork dish
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Abstract
The utility model discloses an electromagnetic control power-shift gearbox with an overrunning coupler characteristic, which comprises a second gear driven gear connected with an output shaft in a coaxial rotation mode, a cam with internal curved surfaces is fixedly connected with the inner portion of the second gear driven gear, a plurality of internal curved surfaces of the cam are evenly distributed on the circumference of the cam with the internal curved surfaces, a cylindrical spline housing fixedly connected with the output shaft is arranged inside the cam with the internal curved surfaces, a plurality of friction rollers are arranged between the internal curved surfaces of the cam and the spline housing, and the second gear driven gear is in friction connection with the spline housing through the friction rollers from the cam with the internal curved surface. The plurality of friction rollers are shifted by a shifting fork disc on which a plurality of compression springs capable of preventing the second gear driven gear and the spline housing from connecting in friction mode are arranged. An electromagnet which can exert electromagnetic resistance on the shifting fork disc to enable the second gear driven gear and the spline housing to be in friction connection is arranged at the outer portion of one side of the shifting fork disc. The power-shift gearbox has the advantages of being simple in structure, convenient to assemble and disassemble and having less waste loss, long service life and low producing and using cost.
Description
Technical field
The utility model relates to a kind of power-shift gear box, particularly a kind of Electromagnetic Control power-shift gear box with overdrive clutch characteristic that is used for battery-operated motor cycle or electric bicycle.
Background technique
The speed threshold of battery-operated motor cycle or electric bicycle is divided into a retaining and two retainings usually, and a retaining speed is low, two retaining speed height.One, two retaining driving gears often mesh with one, two retaining driven gears respectively, and one, two retaining driven gears are installed on the same output shaft by free wheel device respectively, adopt the free wheel device of Electromagnetic Control between two retaining driven gears and the output shaft.Battery-operated motor cycle is at a retaining when travelling, rotational speed such as output shaft and a retaining driven gear, and two retaining driven gear rotating speeds are greater than the output shaft rotating speed, and two keep off driven gears surmounts output shaft by the controllable overrunning clutch between itself and the output shaft; When the needs shift speed change becomes two retainings, control the Electromagnetic Control free wheel device between two retaining driven gears and the output shaft, make two retaining driven gears drive rotational speed such as output shaft, at this moment, one retaining driven gear rotating speed is lower than the output shaft rotating speed, and output shaft surmounts a retaining driven gear by itself and a free wheel device that keeps off between the driven gear.
At present, the Electromagnetic Control free wheel device with overdrive clutch characteristic that is used for battery-operated motor cycle comprises that the heart portion of second gear is equipped with the spline cam, the spline cam forms dismantled and assembled fixedlying connected by spline fitted and output shaft, the spline cam is evenly distributed in the smooth curved surface of multistage by lift characteristics, between spline cam and second gear internal diameter, be provided with retainer, dividing equally of retainer has roller in the breach, roller is corresponding with every section smooth curved surface of cam respectively, be equipped with between retainer and the spline cam and can make retainer roller be pressed to the spring of cam curved surface low level, rely on spring that roller and gear and spline cam disengages friction coupled condition are surmounted with realization, make gear and spline cam keep friction to be connected by retainer being applied electromagnetic resistance, thus realization second gear and output shaft etc. rotational speed.Because the friction curved surface of this free wheel device is located on the spline cam, be subjected to structural limitations, spline cam structure size is less, and mechanical strength is low, simultaneously, because be provided with internal spline, its wall thickness is seriously uneven, and it is being heat-treated in the process, the stress concentration phenomenon very easily takes place and causes cracking, forms waste product and cause damage, perhaps have a strong impact on its working life, increased user's use maintenance cost.For this reason, require further improvement.
Summary of the invention
The purpose of this utility model is exactly at the deficiencies in the prior art, provides that a kind of manufacturing cost and use cost that is used for battery-operated motor cycle or electric bicycle is low, the Electromagnetic Control power-shift gear box with overdrive clutch characteristic of long service life.
For achieving the above object, the utility model adopts following technological scheme.
A kind of Electromagnetic Control power-shift gear box with overdrive clutch characteristic, comprise that coaxial rotation is connected the retaining of two on output shaft driven gear, be positioned at the end inside of two retaining driven gears and form dismantled and assembled spline housing of fixedlying connected by spline structure and output shaft, be evenly distributed in several cam curved surfaces between spline housing and the two retaining driven gears, cam curved surface is connected with friction roller, spline housing can form friction by friction roller with two retaining driven gears and be connected, several friction rollers have been combined with jointly and have been enclosed within the outside shift fork dish that also can stir the circumferential displacement of realization synchronously of several friction rollers of output shaft, be connected with a plurality of pressure springs on the shift fork dish, pressure spring can make two retaining driven gears be connected with spline housing disengaging friction, one side outside of shift fork dish also is provided with and can applies electromagnetic resistance so that the electromagnet that two retaining driven gears and spline housings keep friction to be connected to the shift fork dish, and described spline housing and two forward surfaces that keep off driven gears are the cylndrical surface; Described cam curved surface is a negative camber, cam curved surface is located on the two retaining driven gears, perhaps two retaining driven gear inside also are fixedly connected with the negative camber cam, cam curved surface is located on the negative camber cam, and two retaining driven gears are kept with spline housing or break away from friction being connected by friction roller by the negative camber cam.
Adopt the utility model of aforementioned techniques scheme, because cam curved surface is a negative camber, cam curved surface or be directly arranged in two the retaining driven gears on, perhaps be located on the negative camber cam of fixedlying connected with two retaining driven gears, guaranteeing under the constant situation of original structure intensity, increased the physical dimension of cam curved surface, thus can corresponding increase knuckle; Simultaneously, do not establish cam curved surface on the spline housing, its wall thickness change is less, in the time of can reducing heat treatment significantly stress concentrate and crack with using process in because of the tired risk that cracks, and then effectively reduce the loss due to spoiled work of being brought because of the product crackle, prolonged product working life, and made more convenient, thereby effectively reduce manufacture cost, reduce user's maintenance cost.The quantity of friction roller and cam curved surface can be determined according to the concrete structure size, be generally 4～12.
Preferably, described cam curved surface is located on the negative camber cam, and cam curved surface runs through negative camber cam thickness, and cam curved surface forms the internal surface of negative camber cam; Described negative camber cam is fixedlyed connected with two retaining driven gears by screw.Negative camber cam and two retaining driven gears form and divide body structure, and cam curved surface runs through the negative camber cam, and therefore, cam curved surface can adopt the mode of drawing to process, and can increase substantially manufacturing efficiency, and then reduces manufacture cost.
Preferably, an end of described shift fork dish is positioned at the two retaining driven gear outsides, and the shift fork dish stretches on the inner the other end end face of two retaining driven gears and is evenly distributed in the groove that several are used to hold friction roller, and the quantity of groove equates with the quantity of friction roller; Also be evenly equipped with the projection of a plurality of projections on the side in opposite directions of shift fork dish and two retaining driven gears, the quantity of projection equates with the quantity of pressure spring; Outwards be extruded with protruding rank on the side in opposite directions of described two retaining driven gears and shift fork dish, on the end face of protruding rank, be evenly distributed in a plurality of grooves; The projection front end of described shift fork dish stretches in the groove; Described pressure spring is arranged in groove, and the pressure spring two ends are connected with groove one end madial wall with projection respectively, and pressure spring pushes away the spline housing external cylindrical surface by the shift fork dish with friction roller.Groove and pressure spring quantity are determined according to the physical dimension size is concrete, be generally 2～4, guarantee that two retaining driven gears and output shaft keep surmounting when two retaining driven gears are in off working state, it is simple in structure, manufacturing, easy accessibility, can effectively reduce manufacture cost.
Further preferred, described shift fork dish is provided with uniform a plurality of flutings, fluting is located at the part that the shift fork dish is positioned at the two retaining driven gear outsides, the shift fork dish outside is provided with the ring-type gland, expose from the mider hole of gland at the middle part of shift fork dish, the gland inner side surface is extruded with a plurality of boss of fixedlying connected with two retaining driven gear end faces by screw, boss is circumference uniform distribution, the quantity of boss equates with the fluting quantity of shift fork dish, a plurality of boss lay respectively in a plurality of flutings of shift fork dish, boss and fluting have the setting gap in opposite directions between the sidewall; Described groove runs through the protruding rank outer side wall of two retaining driven gears; The outer circumferential two retaining driven gear directions of described gland are extended with the barrel that is enclosed in protruding rank periphery.But the shift fork dish can pass through the structure that gland, screw and two retaining driven gears form integral disassembly, assembly, can independently form component-assembled in process of production, and easy accessibility, can further improve manufacturing efficiency, reduces production costs.Fluting quantity is determined according to the physical dimension size is concrete, is generally 2～4; Expose from the mider hole of gland at the middle part of shift fork dish, is convenient to electromagnet and applies electromagnetic resistance to it; The size of setting the gap between the sidewall in opposite directions of boss and fluting guarantees that it is principle that two retaining driven gears and spline housing can normally keep and break away from the friction linkage function so that the shift fork dish has enough pendulum angles; Because groove runs through the protruding rank outer side wall of two retaining driven gears, guarantees that further pressure spring is easy for installation.
The utility model beneficial effect compared with prior art is, simple in structure, easy accessibility, little, the long service life of loss due to spoiled work, and manufacturing cost and use cost is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view among the utility model Fig. 1;
B-B sectional view among Fig. 3 the utility model Fig. 1;
Fig. 4 is the shift fork dish structural representation in the utility model;
C-C sectional view among Fig. 5 the utility model Fig. 4;
Fig. 6 is the gland structure schematic representation in the utility model;
Fig. 7 is the D-D sectional view among the utility model Fig. 6.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, but therefore the utility model is not limited among the described scope of embodiments.
Referring to Fig. 1, a kind of Electromagnetic Control power-shift gear box with overdrive clutch characteristic, comprise that coaxial rotation is connected the retaining of two on the output shaft 1 driven gear 2, be positioned at the end inside of two retaining driven gears 2 and form the dismantled and assembled spline housing of fixedlying connected 3 by spline structure and output shaft 1, be evenly distributed in eight cam curved surfaces 4 between spline housing 3 and the two retaining driven gears 2, cam curved surface 4 is connected with friction roller 5, spline housing 3 can form friction by friction roller 5 with two retaining driven gears 2 and be connected, eight friction rollers 5 have been combined with jointly and have been enclosed within the output shaft 1 outside shift fork dishes 6 that also can stir eight friction rollers 5 circumferential displacement of realization synchronously, be connected with a plurality of pressure springs 7 on the shift fork dish 6, pressure spring 7 can make two retaining driven gears 2, and 3 disengaging frictions are connected with spline housing, one side outside of shift fork dish 6 also is provided with and can applies electromagnetic resistance so that two retaining driven gears 2 and spline housing 3 keep the electromagnet 8 of friction coupled condition to shift fork dish 6, and the forward surfaces of described spline housing 3 and two retaining driven gears 2 are the cylndrical surface; Described cam curved surface 4 is a negative camber, cam curved surface 4 is located on the two retaining driven gears 2, perhaps two retaining driven gears, 2 inside also are fixedly connected with negative camber cam 9, cam curved surface 4 is located on the negative camber cam 9, and two retaining driven gears 2 are kept or break away from friction with spline housing 3 being connected by friction roller 5 by negative camber cam 9.
Referring to Fig. 3, described cam curved surface 4 is located on the negative camber cam 9, and cam curved surface 4 runs through negative camber cam 9 thickness, and cam curved surface 4 forms the internal surface of negative camber cam 9; Described negative camber cam 9 is fixedlyed connected with two retaining driven gears 2 by screw.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, an end of described shift fork dish 6 is positioned at two retaining driven gears, 2 outsides, and shift fork dish 6 stretches on two retaining driven gears, the 2 inner the other end end faces and is evenly distributed in six grooves 61 that are used to hold friction roller 5; Also be evenly equipped with the projection 62 of two projections on the side in opposite directions of shift fork dish 6 and two retaining driven gears 2; Outwards be extruded with protruding rank on the side in opposite directions of described two retaining driven gears 2 and shift fork dish 6, on the end face of protruding rank, be evenly distributed in two grooves 21; Projection 62 front ends of described shift fork dish 6 stretch in the groove 21; Described pressure spring 7 is arranged in groove 21, and pressure spring 7 two ends are connected with groove 21 1 end madial walls with projection 62 respectively, and pressure spring 7 pushes away spline housing 3 external cylindrical surfaces by shift fork dish 6 with friction roller 5.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, described shift fork dish 6 is provided with and is evenly equipped with four flutings 63, fluting 63 is located at the part that shift fork dish 6 is positioned at two retaining driven gears, 2 outsides, shift fork dish 6 outsides are provided with ring-type gland 11, expose from the mider hole of gland 11 at the middle part of shift fork dish 6, gland 11 inner side surfaces are extruded with four boss 111 of fixedlying connected with two retaining driven gears, 2 end faces by screw, boss 111 is circumference uniform distribution, four boss 111 lay respectively in a plurality of flutings 63 of shift fork dish 6, boss 111 and fluting 63 have the setting gap in opposite directions between the sidewall; Described groove 21 runs through the protruding rank outer side wall of two retaining driven gears 2; Outer circumferential two retaining driven gears, 2 directions of described gland 11 are extended with the barrel 112 that is enclosed in protruding rank periphery.
Working principle is carried out brief description below by the introduction of the utility model working procedure to working principle:
Referring to Fig. 1, Fig. 2, Fig. 3, working procedure of the present utility model is such, when battery-operated motor cycle need be when a retaining travels, output shaft 1 rotates by direction as shown under a retaining driven gear (not shown) drives, spline housing 3 is with rotational speed such as output shafts 1, two retaining driven gears 2 are by two retaining driving gear (not shown) driven rotary, at this moment, though the rotating speed of two retaining driving gears 2 is greater than output shaft 1 rotating speed, but because the elastic force of passing through of pressure spring 7 makes shift fork dish 6 friction roller 5 be pressed against cam curved surface 4 far-ends that are positioned at negative camber cam 9 away from spline housing 3 external cylindrical surfaces, two retaining driven gears 2 can not apply friction torque to friction roller 5 by cam curved surface 4, friction roller 5 keeps off the cam linkage structure disengagement friction coupled condition that driven gears 2 are fixedlyed connected with spline housing 3 and with two, friction roller 5 revolves round the sun with two retaining driven gears 2 together with shift fork dish 6, consequently, two retaining driven gears 2 dally on output shaft 1, rotational speed such as an output shaft 1 and a retaining driven gear.
When battery-operated motor cycle need be when two retainings travel, two retaining driven gears 2 are by two retaining driving gear driven rotary (not shown)s, output shaft 1 is in a retaining driven gear (not shown) driven rotary, spline housing 3 is with rotational speed such as output shafts 1, the rotating speed of two retaining driving gears 2 is greater than output shaft 1 rotating speed, at this moment, electromagnet 8 work, shift fork dish 6 is subjected to the electromagnetic resistance effect to overcome the elastic force of pressure spring 7, friction roller 5 is pushed to the near-end of the cam curved surface 4 of negative camber cam 9, forming friction with spline housing 3 external cylindrical surface cam curved surfaces 4 gradually is connected, two retaining driven gears 2 apply friction torque by cam curved surface 4 to friction roller 5, drive spline housing 3 with rotational speed such as two retaining driven gears 2, spline housing 3 drives rotational speed such as output shaft 1; Owing to be provided with the free wheel device of ordinary construction between a retaining driven gear and the output shaft 1, when a retaining driven gear rotating speed was lower than output shaft 1, output shaft 1 dallied in a retaining driven gear, thereby surmounted a retaining driven gear; Realize rotating speed rotations such as output shaft 1 and two retaining driven gears 2 with this.
Though more than combine accompanying drawing and described mode of execution of the present utility model, but those of ordinary skill in the art can recognize also in the scope to claims and make various variations or modification that these modifications and variations are interpreted as within scope of the present utility model and intention.
Claims (4)
1. Electromagnetic Control power-shift gear box with overdrive clutch characteristic, comprise that coaxial rotation is connected the retaining of two on the output shaft (1) driven gear (2), be positioned at the end inside of two retaining driven gears (2) and form dismantled and assembled spline housing of fixedlying connected (3) by spline structure and output shaft (1), be evenly distributed in several cam curved surfaces (4) between spline housing (3) and the two retaining driven gears (2), cam curved surface (4) is connected with friction roller (5), spline housing (3) can form friction by friction roller (5) with two retaining driven gears (2) and be connected, several friction rollers (5) have been combined with jointly and have been enclosed within output shaft (1) outside and can stir the shift fork dish (6) that several friction rollers (5) are realized circumferential displacement synchronously, be connected with a plurality of pressure springs (7) on the shift fork dish (6), pressure spring (7) can make two retaining driven gears (2) and spline housing (3) disengaging friction be connected, one side outside of shift fork dish (6) also is provided with and can applies electromagnetic resistance so that two retaining driven gears (2) and the electromagnet (8) that spline housing (3) keeps friction to be connected is characterized in that to shift fork dish (6): described spline housing (3) is the cylndrical surface with the forward surface of two retaining driven gears (2); Described cam curved surface (4) is a negative camber, cam curved surface (4) is located on the two retaining driven gears (2), perhaps two retaining driven gear (2) inside also are fixedly connected with negative camber cam (9), cam curved surface (4) is located on the negative camber cam (9), and two retaining driven gears (2) are kept with spline housing (3) or break away from friction being connected by friction roller (5) by negative camber cam (9).
2. the Electromagnetic Control power-shift gear box with overdrive clutch characteristic according to claim 1, it is characterized in that: described cam curved surface (4) is located on the negative camber cam (9), cam curved surface (4) runs through negative camber cam (9) thickness, and cam curved surface (4) forms the internal surface of negative camber cam (9); Described negative camber cam (9) is fixedlyed connected with two retaining driven gears (2) by screw.
3. the Electromagnetic Control power-shift gear box with overdrive clutch characteristic according to claim 1, it is characterized in that: an end of described shift fork dish (6) is positioned at two retaining driven gear (2) outsides, shift fork dish (6) stretches on the inner the other end end face of two retaining driven gears (2) and is evenly distributed in several grooves that is used to hold friction roller (5) (61), and the quantity of groove (61) equates with the quantity of friction roller (5); Also be evenly equipped with the projection (62) of a plurality of projections on the side in opposite directions of shift fork dish (6) and two retaining driven gears (2), the quantity of projection (62) equates with the quantity of pressure spring (7); Outwards be extruded with protruding rank on the side in opposite directions of described two retaining driven gears (2) and shift fork dish (6), on the end face of protruding rank, be evenly distributed in a plurality of grooves (21); Projection (62) front end of described shift fork dish (6) stretches in the groove (21); Described pressure spring (7) is arranged in groove (21), and pressure spring (7) two ends are connected with groove (21) one end madial walls with projection (62) respectively, and pressure spring (7) pushes away spline housing (3) external cylindrical surface by shift fork dish (6) with friction roller (5).
4. the Electromagnetic Control power-shift gear box with overdrive clutch characteristic according to claim 3, it is characterized in that: described shift fork dish (6) is provided with uniform a plurality of flutings (63), fluting (63) is located at the part that shift fork dish (6) is positioned at two retaining driven gear (2) outsides, shift fork dish (6) outside is provided with ring-type gland (11), expose from the mider hole of gland (11) at the middle part of shift fork dish (6), gland (11) inner side surface is extruded with a plurality of boss (111) of fixedlying connected with two retaining driven gear (2) end faces by screw, boss (111) is circumference uniform distribution, the quantity of boss (111) equates with fluting (63) quantity of shift fork dish (6), a plurality of boss (111) lay respectively in a plurality of flutings (63) of shift fork dish (6), boss (111) and fluting (63) have the setting gap in opposite directions between the sidewall; Described groove (21) runs through the protruding rank outer side wall of two retaining driven gears (2); Outer circumferential two retaining driven gear (2) directions of described gland (11) are extended with the barrel (112) that is enclosed in protruding rank periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200539907U CN201944205U (en) | 2011-03-03 | 2011-03-03 | Electromagnetic control power-shift gearbox with overrunning coupler characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200539907U CN201944205U (en) | 2011-03-03 | 2011-03-03 | Electromagnetic control power-shift gearbox with overrunning coupler characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944205U true CN201944205U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200539907U Expired - Fee Related CN201944205U (en) | 2011-03-03 | 2011-03-03 | Electromagnetic control power-shift gearbox with overrunning coupler characteristic |
Country Status (1)
| Country | Link |
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| CN (1) | CN201944205U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537230A (en) * | 2012-02-13 | 2012-07-04 | 江廷普 | Mechanical overrunning speed changer |
| CN104534035A (en) * | 2015-01-08 | 2015-04-22 | 江西东江机电有限公司 | Speed changing device and automobile |
| CN108194583A (en) * | 2018-01-08 | 2018-06-22 | 重庆瑞阳鑫驰新能源汽车有限责任公司 | Shift mechanism, transmission assembly, electric vehicle, shifting method and control system |
-
2011
- 2011-03-03 CN CN2011200539907U patent/CN201944205U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537230A (en) * | 2012-02-13 | 2012-07-04 | 江廷普 | Mechanical overrunning speed changer |
| CN102537230B (en) * | 2012-02-13 | 2015-03-04 | 江廷普 | Mechanical overrunning speed changer |
| CN104534035A (en) * | 2015-01-08 | 2015-04-22 | 江西东江机电有限公司 | Speed changing device and automobile |
| CN104534035B (en) * | 2015-01-08 | 2017-03-22 | 江西东江机电有限公司 | Speed changing device and automobile |
| CN108194583A (en) * | 2018-01-08 | 2018-06-22 | 重庆瑞阳鑫驰新能源汽车有限责任公司 | Shift mechanism, transmission assembly, electric vehicle, shifting method and control system |
| CN108194583B (en) * | 2018-01-08 | 2020-07-03 | 重庆瑞阳鑫驰新能源汽车有限责任公司 | Gear shifting mechanism, gearbox assembly, electric automobile, gear shifting method and control system |
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| 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: 20110824 Termination date: 20150303 |
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| EXPY | Termination of patent right or utility model |