CN105065654A - Two-gear gearbox of electric vehicle - Google Patents
Two-gear gearbox of electric vehicle Download PDFInfo
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- CN105065654A CN105065654A CN201510417410.0A CN201510417410A CN105065654A CN 105065654 A CN105065654 A CN 105065654A CN 201510417410 A CN201510417410 A CN 201510417410A CN 105065654 A CN105065654 A CN 105065654A
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- Prior art keywords
- gear
- block selecting
- shifting
- pull bar
- spline
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
- B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gear-Shifting Mechanisms (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a two-gear gearbox of an electric vehicle. The two-gear gearbox comprises a driving mechanism, a speed reducing mechanism, a gear shifting mechanism, a gear selecting mechanism, a gear shifting actuating mechanism and a control module, wherein the gear shifting mechanism comprises a gear selecting spline (14), a gear shifting shaft (5), a high-speed gear (6) and a low-speed gear (8); the gear selecting mechanism comprises a gear selecting shift fork (15), a gear selecting pull rod (16), a gear selecting gear (17), a gear selecting assembly (18), a gear position cam (19) and a gear propping spring (25). The two-gear gearbox disclosed by the invention adopts electric gear shifting to replace manual gear shifting, so that the gear shifting is convenient.
Description
Technical field
Can be used for two shift transmissions in electric motor car purposes, belong to electric motor car variable speed drives and drive technology field.
Background technique
For making motor be operated in efficient district as much as possible, the application of the electric motor car of equipment speed changer is just increasing.But the electric automobiles such as existing electro-tricycle, electric vehicle, take hand-pulling type gear-changing device more.This will cause following several problem:
1, existing electric motor car hand-pulling type gear-changing device, without synchronization motion in shift process, this will cause occurring in shift process beating the problems such as tooth, impact, pause and transition in rhythm or melody, noise, and easily cause the damage of gear or gearbox.
2, existing electric motor car hand-pulling type gear-changing device, gear shifting actuating mechanism is made up of the mechanism such as bracing wire, spring, and cannot judge whether gearshift puts in place, and time one length will cause, the pure mechanical mechanism such as bracing wire, spring is aging or loosening, to cause in running process off-gear or does not change gear.
3, existing electric motor car hand-pulling type gear-changing device, needs by brute spring to realize gear locking, in the process of moving, easily occurs hanging motionless gear, or in upward slope process, miss gearshift opportunity.
4, existing electric motor car hand-pulling type gear-changing device, does not have clutch device, cannot accomplish that power interruption or power are connected in shift process.Therefore, in During manual operation, need more manual strength, this affects car load handling and driving experience undoubtedly.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of electric motor car two shift transmission, and the electric motor car having installed this speed changer can realize gearshift more easily, and improves the working life of speed changer.
Technological scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of electric motor car two shift transmission, comprises driving mechanism, reducing gear, gearshift, gear selection mechanism, gear shifting actuating mechanism, signals collecting mechanism and control module, wherein:
Described driving mechanism is used for controlling electric motor car rotating speed according to control module, and this rotating speed is passed to reducing gear;
Described reducing gear is used for the reduction to driving mechanism rotating speed, and the rotating speed after reducing is passed to gearshift;
Described control module is for controlling the operation of gear shifting actuating mechanism and driving mechanism;
Described gear shifting actuating mechanism, according to the control of control module, drives gear selection mechanism to carry out high to low gear block selecting;
Described gear selection mechanism is used for carrying out high to low gear block selecting according to the driving of gear shifting actuating mechanism, and institute's block selecting is passed to gearshift;
The gear that described gearshift is chosen according to gear selection mechanism, passes to output terminal tire by the rotating speed of reducing gear transmission.
Driving mechanism comprises drive motor (31), drive motor input shaft (13) and drive motor input gear (11), is in transmission connection between described drive motor (31) and drive motor input gear (11) by drive motor input shaft (13);
Described reducing gear comprises deboost axle input gear (10), deboost axle (12), bottom gear input gear (9) and top gear input gear (7), described deboost axle input gear (10) is fixedly mounted on deboost axle (12), and described drive motor input gear (11) and deboost axle input gear (10) are often connected with a joggle; Described bottom gear input gear (9) is fixedly connected with deboost axle (12) by the first spline, and top gear input gear (7) and deboost axle (12) one links and is fixed together; Or described top gear input gear (7) is fixedly connected with deboost axle (12) by the first spline, and bottom gear input gear (9) and deboost axle (12) one links and is fixed together;
Described gearshift comprises block selecting spline (14), shifting shaft (5), top gear gear (6) and bottom gear gear (8), described shifting shaft (5) is provided with shifting shaft output gear (4), and described top gear gear (6) and bottom gear gear (8) are connected also rotatably by jump ring pad is spacing with shifting shaft (5), simultaneously described block selecting spline (14) to be placed between top gear gear (6) and bottom gear gear (8) and to be connected with shifting shaft (5) by spline, and can slide axially, top gear input gear (7) and top gear gear (6) are often connected with a joggle, bottom gear input gear (9) and bottom gear gear (8) are often connected with a joggle, gear spline (14) is dialled pulling of slotting (15) by block selecting and is engaged with top gear gear (6), or engages with low speed gear wheel (8),
Described gear selection mechanism comprises block selecting and dials slotting (15), block selecting pull bar (16), block selecting gear (17), block selecting assembly (18), gear positions cam (19) and apical tooth spring (25), and described block selecting pull bar (16) is provided with block selecting vertically successively and dials plug in positioning hole (164), the first spacing shim (30), spacing draw-in groove (161), helical pitch groove (162), spacing hole (163); Described block selecting is dialled slotting (15) and is dialled plug in positioning hole (164) and block selecting pull bar (16) by block selecting and be connected to a fixed, described block selecting is simultaneously dialled between slotting (15) and the first spacing shim (30) and is provided with spring (24) of shifting gears, and described gearshift spring (24) is enclosed within block selecting pull bar 16, and described first spacing shim (30) is fixedly connected on shell (1); Described block selecting gear (17), block selecting assembly (18), gear positions cam (19) and apical tooth spring (25) are enclosed within the block selecting pull bar (16) of the first spacing shim (30) opposite side successively; And cotter pin (29) is installed in the spacing hole (163) of described block selecting pull bar (16), be provided with the second spacing shim (28) between described apical tooth spring (25) and cotter pin (29); Described gear positions cam (19) is along helical pitch groove (162) axial motion, and its limit position deviating from that apical tooth spring (25) moves is spacing draw-in groove (161); Described block selecting gear (17) is fixedly connected with one end of block selecting assembly (18), and described block selecting gear (17) rotates in a circumferential direction along block selecting pull bar 16; The other end of described block selecting assembly (18) is rotationally connected along gear positions cam (19) circumference simultaneously;
Described gear shifting actuating mechanism comprises the block selecting motor (22), speed reducer (21) and the shift motor output gear (20) that are in transmission connection successively, and described shift motor output gear (20) and block selecting gear (17) are connected by meshing transmission;
Described control module controls block selecting motor (22) according to gear shifting signal and passes to block selecting gear (17) by shift motor output gear (20), and block selecting gear (17) drives block selecting assembly (18) to rotate clockwise; Block selecting assembly (18) is along gear positions cam (19) apparent motion, contacted with gear positions cam (19) rotational slide by block selecting assembly (18), when block selecting assembly (18) moves to gear positions cam (19) corresponding gear positions, gear shifting action terminates, gear positions cam (19) drives block selecting pull bar (16) to axially move along block selecting gear (17) simultaneously, block selecting pull bar (16) drives block selecting to dial slotting (15), pulls block selecting spline (14) to be close to high gear (8).
Further: also comprise signals collecting mechanism, described signals collecting mechanism comprises rate signal magnet steel (232), gear positions magnet steel (261) and signal acquisition circuit plate (27), and described rate signal magnet steel (232) Negotiation speed signal magnet steel positioning hole (231) is connected with shifting shaft (5); Gear positions magnet steel (261) is connected with block selecting gear (17) by gear positions magnet steel positioning hole (262); Signal acquisition circuit plate (27) comprises speed of a motor vehicle Hall (271), neutral Hall (272), high to low gear Hall (273), described neutral Hall (272), high to low gear Hall (273) are oppositely arranged with gear positions magnet steel (261), and speed of a motor vehicle Hall (271) and rate signal magnet steel (232) are oppositely arranged; Signal acquisition circuit plate (27) Negotiation speed signal magnet steel (232) gathers vehicle speed signal, gathers gear positions signal by gear positions magnet steel (261); The signal that described control module is collected by signals collecting mechanism judges, then drives gear shifting actuating mechanism to drive the block selecting block selecting spline (14) dialled on slotting (15) that shifting shaft (5) is exchanged with high, low speed gear and engages.
Preferred: described gear positions cam (19) to be provided with high gear position (191), neutral gear position (192), low gear position (193), and described gear positions cam (19) is slidably connected by helical pitch hole (194) and helical pitch groove (162).
Preferred: described block selecting is dialled slotting (15) and is provided with and dials plug in positioning hole (151), described block selecting is dialled slotting (15) and is dialled plug in positioning hole (164) by the first bearing pin block selecting dialled slotting (15) and block selecting pull bar (16) is connected to a fixed through dialling plug in positioning hole (151) and block selecting.
Beneficial effect: a kind of electric motor car two shift transmission provided by the invention, compared to existing technology, has following beneficial effect:
The present invention adopts electronic gearshift instead of and shifts gears manually, makes gearshift more convenient.The drive range cam structure that design adopts, the position of each gear of accurate location, make gear rest on active position exactly, prevent off-gear, put into gear not in place; The signal pickup assembly that design adopts, can Real-time Obtaining speed changer output speed, coordinates motor input speed, judges gearshift opportunity, can accomplish in shift process, not play tooth, not pause and transition in rhythm or melody, do not impact by controller.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is each exploded perspective erection drawing of the present invention.
Fig. 3 is the decomposition chart of gear positions cam 19 in Fig. 1.
Fig. 4 is the three-dimensional assembling exploded view of shifting shaft 5 in Fig. 1.
Fig. 5 is the three-dimensional assembly structure figure of vehicle speed signal 23, gear positions signal 26, signal receiving circuit plate 27.
Fig. 6, be the three-dimensional assembly structure figure of low gear, neutral, high gear.
Fig. 7 is the three-dimensional assembly structure figure of low gear, neutral, high gear.
Fig. 8 is the three-dimensional assembly structure figure of low gear, neutral, high gear.
Wherein, 1-shell, 2-differential mechanism, 3-differential mechanism output gear, 4-shifting shaft output gear, 5-shifting shaft, 6-top gear gear, 7-top gear input gear, 8-bottom gear gear, 9-bottom gear input gear, 10-deboost axle input gear, 11-drive motor input gear, 12-deboost axle, 13-drive motor input shaft, 14-block selecting spline, 141-spline tooth, 142-spline tooth, 15-block selecting is dialled slotting, 151-positioning hole, 16-block selecting pull bar, the spacing draw-in groove of 161-, 162-helical pitch groove, 163-spacing hole, 17-block selecting gear, 171-gear hole, 18-block selecting assembly, 181-block selecting bar, 19-gear positions cam, 191-high gear position, 192-neutral gear position, 193-low gear position, 194-helical pitch hole, 20-block selecting motor output gear, 21-speed reducer, 22-block selecting motor, 23-vehicle speed signal, 231-positioning hole, 232-vehicle speed signal magnet steel, 24-shifts gears spring, 25-apical tooth spring, 26-gear positions signal, 261-gear positions magnet steel, 262-positioning hole, 27-signal receiving circuit plate, 271-speed of a motor vehicle Hall, 272-neutral Hall, 273-high to low gear Hall, 28-spacing shim, 29-cotter pin, 30-spacing shim, 31-drive motor.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
A kind of electric motor car two shift transmission, as Figure 1-5, comprise shell 1, driving mechanism, reducing gear, gearshift, gear selection mechanism, gear shifting actuating mechanism, signals collecting mechanism and control module, reducing gear, gearshift, gear selection mechanism, gear shifting actuating mechanism, signals collecting mechanism and control module are installed in described shell 1, wherein:
Described driving mechanism is used for controlling electric motor car rotating speed according to control module, and this rotating speed is passed to reducing gear;
Described reducing gear is used for the reduction to driving mechanism rotating speed, and the rotating speed after reducing is passed to gearshift;
Described control module is for controlling the operation of gear shifting actuating mechanism and driving mechanism;
Described gear shifting actuating mechanism, according to the control of control module, drives gear selection mechanism to carry out high to low gear block selecting;
Described gear selection mechanism is used for carrying out high to low gear block selecting according to the driving of gear shifting actuating mechanism, and institute's block selecting is passed to gearshift;
The gear that described gearshift is chosen according to gear selection mechanism, passes to output terminal tire by the rotating speed of reducing gear transmission.
Driving mechanism comprises drive motor 31, drive motor input shaft 13 and drive motor input gear 11, is in transmission connection between described drive motor 31 and drive motor input gear 11 by drive motor input shaft 13; Described drive motor input shaft 13 one end is fixed in shell 1 by bearing, and one end is connected with drive motor 31.
Described reducing gear comprises deboost axle input gear 10, deboost axle 12, bottom gear input gear 9 and top gear input gear 7, described deboost axle input gear 10 is fixedly mounted on deboost axle 12, and described drive motor input gear 11 and deboost axle input gear 10 are often connected with a joggle; Described bottom gear input gear 9 is fixedly connected with deboost axle 12 by the first spline, and top gear input gear 7 and deboost axle 12 one link and be fixed together; Or described top gear input gear 7 is fixedly connected with deboost axle 12 by the first spline, and bottom gear input gear 9 and deboost axle 12 one link and are fixed together;
Described gearshift comprises block selecting spline 14, shifting shaft 5, top gear gear 6 and bottom gear gear 8, described shifting shaft 5 is provided with shifting shaft output gear 4, and described top gear gear 6 and bottom gear gear 8 are connected also rotatably by jump ring pad is spacing with shifting shaft 5, simultaneously described block selecting spline 14 to be placed between top gear gear 6 and bottom gear gear 8 and to be connected with shifting shaft 5 by spline, and top gear input gear 7 and top gear gear 6 are often connected with a joggle; Bottom gear input gear 9 and bottom gear gear 8 are often connected with a joggle; Block selecting spline 14 to be placed between top gear gear 6 and bottom gear gear 8 and to be connected with shifting shaft 5 by spline, and can slide axially; Drive gear selection mechanism by gear shifting actuating mechanism, and pull block selecting to dial slotting 15 block selecting spline 14 is engaged with top gear gear 6, or block selecting spline 14 engages with low speed gear wheel 8.
Described gear selection mechanism comprises block selecting and dials slotting 15, block selecting pull bar 16, block selecting gear 17, block selecting assembly 18, gear positions cam 19 and apical tooth spring 25, and described block selecting pull bar 16 is provided with block selecting vertically successively and dials plug in positioning hole 164, first spacing shim 30, spacing draw-in groove 161, helical pitch groove 162, spacing hole 163; Described block selecting is dialled slotting 15 and is dialled plug in positioning hole 164 by block selecting and be connected to a fixed with block selecting pull bar 16, simultaneously described block selecting is dialled slotting 15 and first and is provided with spring 24 of shifting gears between spacing shim 30, and described gearshift spring 24 is enclosed within block selecting pull bar 16, and described first spacing shim 30 is fixedly connected on shell 1; Described block selecting gear 17, block selecting assembly 18, gear positions cam 19 and apical tooth spring 25 are enclosed within the block selecting pull bar 16 of the first spacing shim 30 opposite side successively; And cotter pin 29 is installed in the spacing hole 163 of described block selecting pull bar 16, be provided with the second spacing shim 28 between described apical tooth spring 25 and cotter pin 29; Described gear positions cam 19 is along helical pitch groove 162 axial motion, and its limit position deviating from apical tooth spring 25 motion is spacing draw-in groove 161; Described block selecting gear 17 is fixedly connected with one end of block selecting assembly 18, and described block selecting gear 17 rotates in a circumferential direction along block selecting pull bar 16; The other end of described block selecting assembly 18 does circumferential movement along gear positions cam 19 simultaneously; Block selecting gear 17 is connected with block selecting pull bar 16, and block selecting gear 17 is along block selecting pull bar 16 clockwise movement when block selecting; Block selecting assembly 18 and block selecting gear 17 compact siro spinning technology; Gear positions cam 19 and bottom gear apical tooth spring 25, spacing shim 28 are connected to the spacing hole less than 163 of block selecting pull bar 16 by cotter pin 29.By spacing draw-in groove 161, helical pitch groove 162, gear positions cam 19 carries out the axial motion be limited in scope on block selecting pull bar 16 along helical pitch groove 162.
By vehicle speed signal 23, drive gear shifting actuating mechanism to pass to block selecting gear 17 by shift motor output gear 20, contacted with gear positions cam 19 rotational slide by block selecting assembly 18; Block selecting assembly 18 is when gear positions cam 19 surface, and gear positions cam 19 drives block selecting pull bar 16 to axially move along gear hole 171.
Described gear shifting actuating mechanism comprises the block selecting motor 22, speed reducer 21 and the shift motor output gear 20 that are in transmission connection successively, and described shift motor output gear 20 and block selecting gear 17 are connected by meshing transmission;
Described signals collecting mechanism comprises rate signal magnet steel 232, gear positions magnet steel 261 and signal acquisition circuit plate 27, and described rate signal magnet steel 232 Negotiation speed signal magnet steel positioning hole 231 is connected with shifting shaft 5; Gear positions magnet steel 261 is connected with block selecting gear 17 by gear positions magnet steel positioning hole 262; Signal acquisition circuit plate 27 comprises speed of a motor vehicle Hall 271, neutral Hall 272, high to low gear Hall 273, and described neutral Hall 272, high to low gear Hall 273 are oppositely arranged with gear positions magnet steel 261, and speed of a motor vehicle Hall 271 and rate signal magnet steel 232 are oppositely arranged; Signal acquisition circuit plate 27 Negotiation speed signal magnet steel 232 gathers vehicle speed signal, gathers gear positions signal by gear positions magnet steel 261;
Described control module controls block selecting motor 22 according to gear shifting signal and passes to block selecting gear 17 by shift motor output gear 20, and block selecting gear 17 drives block selecting assembly 18 to rotate clockwise; Block selecting assembly 18 is along gear positions cam 19 apparent motion, contacted with gear positions cam 19 rotational slide by block selecting assembly 18, when block selecting assembly 18 moves to gear positions cam 19 corresponding gear positions, gear shifting action terminates, gear positions cam 19 drives block selecting pull bar 16 to axially move along block selecting gear 17 simultaneously, block selecting pull bar 16 drives block selecting to dial slotting 15, pulls block selecting spline 14 to be close to high gear 8; The signal that described control module is collected by signals collecting mechanism judges, then drives gear shifting actuating mechanism to drive the block selecting block selecting spline 14 dialled on slotting 15 that shifting shaft 5 is exchanged with high, low speed gear and engages.
Described gear positions cam 19 is provided with high gear position 191, neutral gear position 192, low gear position 193, and described gear positions cam 19 is slidably connected by helical pitch hole 194 and helical pitch groove 162.Gear positions cam (19) is connected with helical pitch groove 162 by helical pitch hole 194, and can only axially move, and can not move in a circle.
Described block selecting is dialled slotting 15 and is provided with and dials plug in positioning hole 151, described block selecting dial slotting 15 by the first bearing pin through dial plug in positioning hole 151 and block selecting dial plug in positioning hole 164 block selecting dialled slotting 15 and block selecting pull bar 16 be connected to a fixed.
The present invention by the input of drive motor 24, then by slow down step by step the most at last transmission of power to output terminal tire.Drive motor 31 is connected with drive motor input shaft 13, and power is passed to drive motor input gear 11 by drive motor input shaft 13, by passing to deboost axle input gear 10 by drive motor input gear 11 again; Bottom gear input gear 9 and deboost axle input gear 10 are fixed on deboost axle 12 in the mode of spline, and top gear input gear 7 and deboost axle 12 are integrated interlock.When deboost axle input gear 10 rotates, drive deboost axle 12, top gear input gear 7, bottom gear input gear 9 synchronous axial system; Top gear input gear 9 often engages with top gear gear 8, and bottom gear input gear 7 often engages with bottom gear gear 6; It is spacing that top gear gear 6 and bottom gear gear 8 pass through jump ring pad, is connected also rotatable with shifting shaft 5.Block selecting spline 14 is placed between top gear gear 6 and bottom gear gear 8, is connected with shifting shaft 5 by spline, and can lower slider vertically; Drive gear selection mechanism by gear shifting actuating mechanism, and pull gearshift to dial to insert block selecting spline 14 is engaged with top gear gear 6, or block selecting spline 14 engages with low speed gear wheel 8, and two kinds of different engagement systems, by output speed ratios different for acquisition two kinds; Output gear 4 links with shifting shaft 5 one, and two kinds of different speed ratios finally pass to differential gear 3 by output gear 4, finally pass to output terminal tire.
As Fig. 1,2.Shown in, as mentioned above, drive gear selection mechanism by gear shifting actuating mechanism, and pull gearshift to dial to insert and block selecting spline 14 is engaged with top gear gear 8 or bottom gear gear 6, to obtain two kinds of different speed ratios
-gearshift is dialled to insert and is comprised: slotting 15, block selecting pull bar 16 is dialled in block selecting; Block selecting is dialled slotting 15 and is fixed on block selecting pull bar 16 by screw by positioning hole 151 and positioning hole 164.When pull bar moves up and down, slotting passive interlock is dialled in block selecting.
-gear selection mechanism comprises: block selecting gear 17, block selecting assembly 18, gear positions cam 19, cotter pin 29, spacing shim 28, apical tooth spring 25, spacing shim 30, gearshift spring 24; Block selecting gear 17 is connected with block selecting pull bar 16 by gear hole 171, and block selecting gear 17 is fixed on casing, rotates clockwise along block selecting pull bar 16; Block selecting assembly 18 is fixedly connected with block selecting gear 17; Gear positions cam 19 is enclosed within block selecting pull bar 16 by helical pitch hole 194, helical pitch groove 162; Cotter pin 29 is fixed in positioning hole 163, and spacing shim 28, apical tooth spring 25 are enclosed within block selecting pull bar 16, and are limited in positioning hole less than 163 by cotter pin 29; Apical tooth spring 25 lower end presses to gear positions cam 19, makes gear positions cam 19 produce downward pressure all the time and finally be limited on the position of spacing draw-in groove 161; In sum, gear positions cam 19 and block selecting pull bar 16 in tilt fixing, and can do upwards, limited sliding axially along block selecting pull bar 16; Gearshift spring 24 is enclosed within block selecting pull bar 16, and is limited in block selecting and dials between slotting 15 and spacing shim 30; Spacing shim 30 is fixed on housing 1.
-gear shifting actuating mechanism comprises: block selecting motor 22, speed reducer 21, block selecting motor output gear 20; During gearshift, block selecting motor 22 drives speed reducer 21, passes to block selecting gear 17 by block selecting motor output gear 20.
Gear shift of the present invention is as described below:
One, low gear
As shown in Fig. 6,3, as mentioned above.When CPU (control module) sends shifting commands, block selecting motor 22 finally drives block selecting motor output gear 20 to pass to again and drives block selecting gear 17; Block selecting gear 17 drives block selecting assembly 18 to rotate clockwise; Block selecting assembly 18 is along gear positions cam 19 apparent motion, and when block selecting assembly 18 moves to cam low gear position 193, gear shifting action terminates, and it is characterized in that:
When block selecting assembly 18 is along gear positions cam 19 apparent motion, gear positions cam 19, by continuous upwards jack-up, after apical tooth spring 25 is stressed, drives block selecting pull bar 16 to move upward; Block selecting pull bar 16 drives block selecting to dial slotting 15, pulls block selecting spline 14 to be close to high gear 8, and final spline tooth 141 injects in high gear 8; In this process, because spacing shim 30 maintains static, gearshift spring 24 is dialled in gearshift in the process that moves upward of inserting 15 and is compressed continuously; Therefore, in low gear process, gearshift spring 24 is in compressive state all the time; The elastic force of apical tooth spring 25 is greater than the power under the compressive state of spring 24 of shifting gears all the time, and therefore when not there is apical tooth, apical tooth spring 25 remains range and do not compressed.
Two, neutral
As shown in Fig. 7,3, as mentioned above.When CPU sends shifting commands, block selecting motor 22 finally drives block selecting motor output gear 20 to drive block selecting gear 17; Block selecting gear 17 drives block selecting assembly 18 to rotate clockwise; Block selecting assembly 18, along gear positions cam 19 apparent motion, when block selecting assembly 18 moves to cam low gear position 192, is neutral position state, it is characterized in that:
Block selecting assembly 18 leaves low gear position 193 when arriving neutral gear position 192, and gearshift spring 24 release portion pressure, pulls certain distance downwards by block selecting position cam 19; As mentioned above, block selecting pull bar 16 and the interlock of block selecting position cam 19, drive block selecting to dial slotting 15 and then drive the spline tooth 141 of block selecting spline 14 to leave low gear gear 8; Spline tooth 141,142 and low gear gear 8, high gear gear 6 mutual noninterference, this is neutral position state.
Three, high gear
As shown in Fig. 8,3, as mentioned above.When CPU sends shifting commands, block selecting motor 22 finally drives block selecting motor output gear 20 to drive block selecting gear 17; Block selecting gear 17 drives block selecting assembly 18 to rotate clockwise; Block selecting assembly 18 is along gear positions cam 19 apparent motion, and when block selecting assembly 18 moves to cam low gear position 191, gear shifting action terminates, for high gear state, to it is characterized in that:
Block selecting assembly 18 leaves low gear position 192 when arriving neutral gear position 191, and gearshift spring 24 discharges whole pressure, and block selecting position cam 19 is pulled certain distance downwards again; As mentioned above, block selecting pull bar 16 and the interlock of block selecting position cam 19, drive block selecting to dial slotting 15 and then drive block selecting spline 14 to slide to high gear gear 6, spline tooth 141 is engaged with high gear gear 6; In the process, if there is apical tooth phenomenon, be obstructed during gearshift spring 24 retracting spring stroke, when spline tooth 142 staggers and finally injects in high gear gear 6, gearshift spring 24 stroke is all discharged, then shift process terminates, and is now high gear state.
The present invention is judged by the signal collected, and then drives gear shifting actuating mechanism to drive gearshift to dial the spline plugged and shifting shaft is exchanged with high low speed gear engage; Switched by high low speed, make electric motor car in various road conditions running process, all the time drive motor is remained on efficient district.In low speed driving process, produce high pulling torque, reduce electric motor car inrush current.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. electric motor car two shift transmission, is characterized in that: comprise driving mechanism, reducing gear, gearshift, gear selection mechanism, gear shifting actuating mechanism and control module, wherein:
Described driving mechanism is used for controlling electric motor car rotating speed according to control module, and this rotating speed is passed to reducing gear;
Described reducing gear is used for the reduction to driving mechanism rotating speed, and the rotating speed after reducing is passed to gearshift;
Described control module is for controlling the operation of gear shifting actuating mechanism and driving mechanism;
Described gear shifting actuating mechanism, according to the control of control module, drives gear selection mechanism to carry out high to low gear block selecting;
Described gear selection mechanism is used for carrying out high to low gear block selecting according to the driving of gear shifting actuating mechanism, and institute's block selecting is passed to gearshift;
The gear that described gearshift is chosen according to gear selection mechanism, passes to output terminal tire by the rotating speed of reducing gear transmission.
2. electric motor car two shift transmission according to claim 1, it is characterized in that: described driving mechanism comprises drive motor (31), drive motor input shaft (13) and drive motor input gear (11), be in transmission connection by drive motor input shaft (13) between described drive motor (31) and drive motor input gear (11).
3. electric motor car two shift transmission according to claim 2, it is characterized in that: described reducing gear comprises deboost axle input gear (10), deboost axle (12), bottom gear input gear (9) and top gear input gear (7), described deboost axle input gear (10) is fixedly mounted on deboost axle (12), and described drive motor input gear (11) and deboost axle input gear (10) are often connected with a joggle; Described bottom gear input gear (9) is fixedly connected with deboost axle (12) by the first spline, and top gear input gear (7) and deboost axle (12) one links and is fixed together; Or described top gear input gear (7) is fixedly connected with deboost axle (12) by the first spline, and bottom gear input gear (9) and deboost axle (12) one links and is fixed together.
4. electric motor car two shift transmission according to claim 2, it is characterized in that: described gearshift comprises block selecting spline (14), shifting shaft (5), top gear gear (6) and bottom gear gear (8), described shifting shaft (5) is provided with shifting shaft output gear (4), and described top gear gear (6) and bottom gear gear (8) are connected also rotatably by jump ring pad is spacing with shifting shaft (5), simultaneously described block selecting spline (14) to be placed between top gear gear (6) and bottom gear gear (8) and to be connected with shifting shaft (5) by spline, and can slide axially, top gear input gear (7) and top gear gear (6) are often connected with a joggle, bottom gear input gear (9) and bottom gear gear (8) are often connected with a joggle, gear spline (14) is dialled pulling of slotting (15) by block selecting and is engaged with top gear gear (6), or engages with low speed gear wheel (8).
5. electric motor car two shift transmission according to claim 2, it is characterized in that: described gear selection mechanism comprises block selecting and dials slotting (15), block selecting pull bar (16), block selecting gear (17), block selecting assembly (18), gear positions cam (19) and apical tooth spring (25), and described block selecting pull bar (16) is provided with block selecting vertically successively and dials plug in positioning hole (164), the first spacing shim (30), spacing draw-in groove (161), helical pitch groove (162), spacing hole (163); Described block selecting is dialled slotting (15) and is dialled plug in positioning hole (164) and block selecting pull bar (16) by block selecting and be connected to a fixed, described block selecting is simultaneously dialled between slotting (15) and the first spacing shim (30) and is provided with spring (24) of shifting gears, and described gearshift spring (24) is enclosed within block selecting pull bar 16, and described first spacing shim (30) is fixedly connected on shell (1); Described block selecting gear (17), block selecting assembly (18), gear positions cam (19) and apical tooth spring (25) are enclosed within the block selecting pull bar (16) of the first spacing shim (30) opposite side successively; And cotter pin (29) is installed in the spacing hole (163) of described block selecting pull bar (16), be provided with the second spacing shim (28) between described apical tooth spring (25) and cotter pin (29); Described gear positions cam (19) is along helical pitch groove (162) axial motion, and its limit position deviating from that apical tooth spring (25) moves is spacing draw-in groove (161); Described block selecting gear (17) is fixedly connected with one end of block selecting assembly (18), and described block selecting gear (17) rotates in a circumferential direction along block selecting pull bar 16; The other end of described block selecting assembly (18) is rotationally connected along gear positions cam (19) circumference simultaneously.
6. electric motor car two shift transmission according to claim 2, it is characterized in that: described gear shifting actuating mechanism comprises the block selecting motor (22), speed reducer (21) and the shift motor output gear (20) that are in transmission connection successively, and described shift motor output gear (20) and block selecting gear (17) are connected by meshing transmission.
7. electric motor car two shift transmission according to claim 2, it is characterized in that: described control module controls block selecting motor (22) according to gear shifting signal and passes to block selecting gear (17) by shift motor output gear (20), block selecting gear (17) drives block selecting assembly (18) to rotate clockwise; Block selecting assembly (18) is along gear positions cam (19) apparent motion, contacted with gear positions cam (19) rotational slide by block selecting assembly (18), when block selecting assembly (18) moves to gear positions cam (19) corresponding gear positions, gear shifting action terminates, gear positions cam (19) drives block selecting pull bar (16) to axially move along block selecting gear (17) simultaneously, block selecting pull bar (16) drives block selecting to dial slotting (15), pulls block selecting spline (14) to be close to high gear (8).
8. electric motor car two shift transmission according to claim 2, it is characterized in that: also comprise signals collecting mechanism, described signals collecting mechanism comprises rate signal magnet steel (232), gear positions magnet steel (261) and signal acquisition circuit plate (27), and described rate signal magnet steel (232) Negotiation speed signal magnet steel positioning hole (231) is connected with shifting shaft (5); Gear positions magnet steel (261) is connected with block selecting gear (17) by gear positions magnet steel positioning hole (262); Signal acquisition circuit plate (27) comprises speed of a motor vehicle Hall (271), neutral Hall (272), high to low gear Hall (273), described neutral Hall (272), high to low gear Hall (273) are oppositely arranged with gear positions magnet steel (261), and speed of a motor vehicle Hall (271) and rate signal magnet steel (232) are oppositely arranged; Signal acquisition circuit plate (27) Negotiation speed signal magnet steel (232) gathers vehicle speed signal, gathers gear positions signal by gear positions magnet steel (261); The signal that described control module is collected by signals collecting mechanism judges, then drives gear shifting actuating mechanism to drive the block selecting block selecting spline (14) dialled on slotting (15) that shifting shaft (5) is exchanged with high, low speed gear and engages.
9. electric motor car two shift transmission according to claim 5, it is characterized in that: described gear positions cam (19) is provided with high gear position (191), neutral gear position (192), low gear position (193), and described gear positions cam (19) is slidably connected by helical pitch hole (194) and helical pitch groove (162).
10. electric motor car two shift transmission according to claim 5, it is characterized in that: described block selecting is dialled slotting (15) and is provided with and dials plug in positioning hole (151), described block selecting is dialled slotting (15) and is dialled plug in positioning hole (164) by the first bearing pin block selecting dialled slotting (15) and block selecting pull bar (16) is connected to a fixed through dialling plug in positioning hole (151) and block selecting.
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| CN201510417410.0A CN105065654B (en) | 2015-07-15 | 2015-07-15 | A kind of electric vehicle two speed transmission |
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| CN201510417410.0A CN105065654B (en) | 2015-07-15 | 2015-07-15 | A kind of electric vehicle two speed transmission |
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| CN105065654B CN105065654B (en) | 2018-06-22 |
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Also Published As
| Publication number | Publication date |
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| CN105065654B (en) | 2018-06-22 |
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Application publication date: 20151118 Assignee: Songpu (Xuzhou) New Energy Technology Co.,Ltd. Assignor: XUZHOU NANPU ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Contract record no.: X2021980015632 Denomination of invention: Two speed transmission for electric vehicle Granted publication date: 20180622 License type: Exclusive License Record date: 20211218 |