CN103895799A - Automatic speed changing system - Google Patents
Automatic speed changing system Download PDFInfo
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- CN103895799A CN103895799A CN201410154169.2A CN201410154169A CN103895799A CN 103895799 A CN103895799 A CN 103895799A CN 201410154169 A CN201410154169 A CN 201410154169A CN 103895799 A CN103895799 A CN 103895799A
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Abstract
The invention discloses an automatic speed changing system which comprises a power input mechanism, a speed changing mechanism and a power output mechanism. The speed changing mechanism comprises an outer shell, a first-gear shaft, a centrifugal clutch and a second-gear shaft sleeve, the left end of the first-gear shaft penetrates out of the outer shell to be connected with the power input mechanism, the right end of the first-gear shaft penetrates through the second-gear shaft sleeve to be movably connected to the inner wall of the outer shell, the input end of the centrifugal clutch is connected to the first-gear shaft, the output end of the centrifugal clutch is connected to the second-gear shaft sleeve, and the right end of the second-gear shaft sleeve and the right end of the first-gear shaft are both connected with the power output mechanism through one-way exceeding mechanisms. The automatic speed changing system is simple and compact in structure, small in size, light in weight and convenient to install, speed changing and gear shifting can be automatically carried out according to the vehicle speed, manual operation is avoided, flexible transition is carried out in the gear shifting process, obvious impact feelings are avoided, and better driving and taking experience is provided for a driver and passengers while the safety is achieved.
Description
Technical field
The present invention relates to a kind of transmission system, specifically relate to a kind of automatic speed-changing system being used on battery-driven car.
Background technology
Existing battery-driven car adopts the trailing wheel of brshless DC motor driving electric to rotate more, thereby realize the object of walking, battery-driven car mode of speed control adopts the mode of the working current that changes brshless DC motor to realize the speed governing of battery-driven car more, in actual driving, need to tackle different road conditions, as in the time that level road normally travels, need brushless dc motor speed fast, moment of torsion is little, and running into roughness pavement, go up a slope, heavy load, when the situations such as starting, need brushless dc machine speed slow, moment of torsion is large, if brshless DC motor is now still by normal condition output, to force brshless DC motor to be worked under low efficiency state, cause brshless DC motor stall, heating, even stop operating, to directly reduce brshless DC motor, the life-span of storage battery and correlation control unit,
In prior art, also there is the mode that installs governor on the output shaft of brshless DC motor additional that adopts, realize gearshift, the manual mode of this mode needs regulates and hastens, operation inconvenience, simultaneously rigid combination at the process middle gear of gearshift, can produce clearly impact sense, greatly reduce the comfort level that uses battery-driven car, strong impact is also easy to cause the damage of operating unit, brings potential safety hazard.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose one simple and compact for structure, safe and reliable, can, according to speed of a motor vehicle self shifter, change the automatic speed-changing system of speed, concrete technical scheme is as follows:
A kind of automatic speed-changing system, comprise power input mechanism, speed-changing mechanism and power take-off mechanism, described speed-changing mechanism comprises shell, one grade of axle, centrifugal clutch and second gear axle sleeve, described one grade of axle left end passes shell and is connected with described power input mechanism, the right-hand member of this grade of axle is movably connected on the inwall of shell through after described second gear axle sleeve, the input end of described centrifugal clutch is connected on one grade of axle, mouth is connected on second gear axle sleeve, and the right part of this second gear axle sleeve and one grade of axle is all connected with described power take-off mechanism by mono-directional overrun mechanism;
Described centrifugal clutch comprises the clutch cap of right-end openings, this clutch cap kink is at described one grade of axle, on described one grade of axle, be also installed with driving disk, in the card on this driving disk the right, have chute, in this chute, be provided with drive wheel, described driving disk is also fixedly connected with the inwall of described clutch cap, on described second gear axle sleeve, kink has the first baffle plate successively, at least one input friction disc, output friction disc, second baffle and back-up ring, wherein said the first baffle plate, input friction disc, second baffle horizontally slips and is connected on the inwall of described clutch cap, and the first baffle plate is near described drive wheel, between the first baffle plate and second baffle, be also connected with release spring, described output friction disc horizontally slips and is connected on described second gear axle sleeve, described back-up ring is fixed on the right-hand member of clutch cap.
The present invention realizes like this, the motor output shaft of battery-driven car is connected to by gear, belt or chain on the left end of one grade of axle, right-hand member cover one grade of axle and second gear axle is connected with electric vehicle hub by mono-directional overrun mechanism by gear, belt or chain philosophy, in the time that battery-driven car is driven a vehicle at a slow speed, only slowly run by one grade of axle driving electric wheel hub;
When condition in the time that battery-driven car possesses fast running, along with the continuous increase of speed, driving disk on one grade of axle is also along with twirl, under the effect of centnifugal force, drive wheel pushes the first baffle plate, in the time that the squeese pressure of drive wheel is greater than the elastic force of the release spring between the first baffle plate and second baffle, the first baffle plate, output friction disc, input friction disc and second baffle are pressed together, in the effect of friction force, driving disk will drive second gear axle sleeve to rotate, because the rotating speed of second gear axle sleeve is higher than the speed of one grade of axle, now will surmount one grade of output, realize the quick walking of battery-driven car,
Otherwise, in the time of the Speed Reduction of battery-driven car, in the time that the centnifugal force of drive wheel is less than the elastic force of release spring between the first baffle plate and second baffle, will makes to export friction disc and be separated with input friction disc, second gear axle sleeve stops operating, now one grade of axle driving electric car low speed driving.
To better implement the present invention, may further be:
Described power input mechanism comprises motor, is connected with elementary reducing gear on this motor output shaft, and this elementary reducing gear is connected with described one grade of axle left end by reducing gear, realizes the input of power.By the cooperation of primary pinion and reducing gear, after deceleration, input again transmission mechanism, make speed more steady, reduce the pressure of change-speed box, make its structure simpler.
Described power take-off mechanism is power take-off shaft cover, put and be respectively equipped with quick flower wheel and flower wheel at a slow speed at this power take-off shaft, described second gear axle sleeve is coordinated and is connected with quick flower wheel with mono-directional overrun mechanism by second speed gear, described one grade of axle is coordinated with flower wheel at a slow speed and is connected by one grade of gear and mono-directional overrun mechanism, described mono-directional overrun mechanism is isolator, ratchet, adopts gear transmission, simple in structure, degradation of energy is less, can reduce volume of the present invention simultaneously.
On the left and right directions of described clutch cap inwall, evenly have at least two bar-shaped troughs, the sidewall of described baffle plate and input friction disc is provided with projection, and this projection coordinates realization to horizontally slip with described bar-shaped trough, and projection and chute coordinate, and technique is simple, reliable.
Described input friction disc is both surface friction dish, and described output friction disc is that two single-sided friction dishes match with input friction disc, makes frictional area larger, and energy transmits quick and stable more.
Described drive wheel is steel ball, or is roller, or for getting rid of piece.
Beneficial effect of the present invention is: simple and compact for structure, the little quality of volume is light, can not increase the weight of car load time easy for installation; Adopt full machine design, safe and reliable; Can shift gears according to speed of a motor vehicle automatic speed changing, without manual operation, and shift process flexible transition, without obviously impacting sense, safer time, provide better driving experience to driver and crew; Travel middle motor and storage battery of battery-driven car is operated in optimum regime always, effectively saved electric power, and energy-conserving and environment-protective also can extend service life of the parts such as motor, storage battery.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing of power-transfer clutch in Fig. 1;
Fig. 3 is the structural representation that the present invention inputs friction lining;
Fig. 4 is the present invention's the first baffle arrangement schematic diagram;
Fig. 5 is output friction plate structural representation of the present invention.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figures 1 to 4: a kind of automatic speed-changing system, comprise power input mechanism 1, speed-changing mechanism 2 and power take-off mechanism 3, described power input mechanism 1 comprises motor 15, on these motor 15 motor output shafts, be connected with elementary reducing gear 16, this elementary reducing gear 16 is arranged on by bearing in the shell 3 of speed-changing mechanism;
Described speed-changing mechanism 2 comprises shell 3, one grade of axle 4, centrifugal clutch 5 and second gear axle sleeve 6, described one grade of axle 4 left end pass shell 3, on one grade of axle 4 left end, be connected with reducing gear 17, this reducing gear 17 has coordinated the input of power with elementary reducing gear 16, the right-hand member of described one grade of axle 4 is connected on shell 3 by bearing through after second gear axle sleeve 6;
Described centrifugal clutch 5 comprises driving disk 7, this driving disk 7 is solidly set on described one grade of axle 4 left end, in the card on these driving disk 7 the right, have eight chutes 8, in this chute 8, be provided with drive wheel 9, this drive wheel 9 is ball, one grade of axle 4 left end also kink have the clutch cap 10 of right-end openings, the left card of driving disk 7 is all fixedly connected with the inwall of clutch cap 10 with sidewall, on described second gear axle sleeve 6, go back kink and have the first baffle plate 11, a two-sided input friction disc 24, two output friction discs 13, second baffle 12 and back-up ring 14, wherein the first baffle plate 11 is near drive wheel 9, described the first baffle plate 11, input friction disc 24 and second baffle 12 are slidably connected on the inwall of clutch cap 10 successively, concrete structure is, on the inwall of clutch cap 10, hoop is evenly offered four bar-shaped troughs, at the first baffle plate 11, input friction disc 24 and second baffle 12 are disc, on its sidewall, be equipped with projection 23, coordinate with bar-shaped trough by projection 23 to realize and be in axial sliding connection, between the first baffle plate 11 and second baffle 12, be connected with four release springs 25, this release spring 25 is through the projection 23 on input friction disc 24, can avoid taking frictional area, described two output friction disc 13 centers have hole, on this hole, are provided with gear, match by this gear and second gear axle sleeve 6, and realization is in axial sliding connection, and two output friction discs 13 lay respectively at the right and left of inputting friction disc 24, described back-up ring 14 is fixedly connected on the opening of clutch cap 10 right-hand members, and two-sided to drive wheel 9, the first baffle plate 11, one input friction disc 24, two output friction discs 13 and second baffle 12 are encapsulated in clutch cap 10,
Described power take-off mechanism 3 is power take-off shaft cover 18, on this power take-off shaft cover 18, be respectively equipped with quick flower wheel 19 and flower wheel 20 at a slow speed, described second gear axle sleeve 6 is connected with quick flower wheel 19 by the cooperation of second speed gear 21 and ratchet, and described one grade of axle 4 passes through the cooperation of one grade of gear 22 and ratchet and is connected with flower wheel 20 at a slow speed.
Principle of work of the present invention is as follows: battery-driven car bottom fork axis is penetrated in power take-off shaft cover 18, in the situations such as battery-driven car starting, climbing, vehicle wheel rotational speed is slower, and now motor output shaft directly drives the walking of battery-driven car low speed by one grade of axle 4 after elementary reducing gear 16 and reducing gear 17 decelerations;
In the time that battery-driven car is walked to high speed is normal by low speed, because the driving disk 7 on one grade of axle 4 is followed high-speed operation, under the effect of centnifugal force, drive wheel 9 pushes the first baffle plate 11, in the time that the squeese pressure of the first baffle plate 11 is greater than to the elastic force of release spring 25 between the first baffle plate 11 and second baffle 12, the first baffle plate 11, input friction disc 24, two outputs friction disc 13 and second baffles 12 interconnect, under the effect of friction force, drive wheel 9 drives second gear axle sleeve 6 to rotate, because of the second speed gear 21 quick flower wheel 19 that is linked as on second gear axle sleeve 6, to surmount flower wheel 20 at a slow speed that one grade of axle 4 connects, complete shift speed change action.
Deceleration principle is similar with acceleration principle, is not repeating at this.
Be more than a kind of specific embodiment of the present invention, every done in this practical thought range identical or be equal to distortion, all should be in protection scope of the present invention.
Claims (6)
1. an automatic speed-changing system, comprise power input mechanism (1), speed-changing mechanism (2) and power take-off mechanism (3), it is characterized in that: described speed-changing mechanism (2) comprises shell (3), one grade of axle (4), centrifugal clutch (5) and second gear axle sleeve (6), described one grade of axle (4) left end passes described shell (3) and is connected with described power input mechanism (1), the right-hand member of this one grade of axle (4) is movably connected on the inwall of shell (3) through after described second gear axle sleeve (6), the input end of described centrifugal clutch (5) is connected on one grade of axle (4), mouth is connected on second gear axle sleeve (6), the right part of this second gear axle sleeve (6) and one grade of axle (4) is all connected with described power take-off mechanism (3) by mono-directional overrun mechanism,
Described centrifugal clutch (5) comprises the clutch cap (10) of right-end openings, this clutch cap (10) kink is at described one grade of axle (4), on described one grade of axle (4), be also installed with driving disk (7), in the card on this driving disk (7) the right, have chute (8), in this chute (8), be provided with drive wheel (9), described driving disk (7) is also fixedly connected with the inwall of described clutch cap (10), on described second gear axle sleeve (6), kink has the first baffle plate (11) successively, at least one input friction disc (24), output friction disc (13), second baffle (12) and back-up ring (14), wherein said the first baffle plate (11), input friction disc (24), second baffle (12) horizontally slips and is connected on the inwall of described clutch cap (10), and the first baffle plate (11) is near described drive wheel (9), between the first baffle plate (11) and second baffle (12), be also connected with release spring (25), described output friction disc (13) horizontally slips and is connected on described second gear axle sleeve (6), described back-up ring (14) is fixed on the right-hand member of clutch cap (10).
2. automatic speed-changing system according to claim 1, it is characterized in that: described power input mechanism (1) comprises motor (15), on this motor (15) motor output shaft, be connected with elementary reducing gear (16), this elementary reducing gear (16) is connected with described one grade of axle (4) left end by reducing gear (17), realizes the input of power.
3. automatic speed-changing system according to claim 1, it is characterized in that: described power take-off mechanism (3) is power take-off shaft cover (18), on this power take-off shaft cover (18), be respectively equipped with quick flower wheel (19) and flower wheel (20) at a slow speed, described second gear axle sleeve (6) is connected with flower wheel (19) fast by second speed gear (21) and mono-directional overrun mechanism, and described one grade of axle (4) passes through one grade of gear (22) and mono-directional overrun mechanism cooperation and is connected with flower wheel (20) at a slow speed.
4. automatic speed-changing system according to claim 1, it is characterized in that: on the left and right directions of described clutch cap (10) inwall, evenly have at least two bar-shaped troughs, on the sidewall of described the first baffle plate (11), second baffle (12), input friction disc (24), be equipped with projection (23), this projection (23) coordinates realization to horizontally slip with described bar-shaped trough.
5. automatic speed-changing system according to claim 1, is characterized in that: described input friction disc (24) is both surface friction dish, and described output friction disc (13) is that two single-sided friction dishes match with input friction disc (24).
6. automatic speed-changing system according to claim 1, is characterized in that: described drive wheel (9) is steel ball, or is roller, or for getting rid of piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410154169.2A CN103895799B (en) | 2014-04-17 | 2014-04-17 | A kind of automatic speed-changing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410154169.2A CN103895799B (en) | 2014-04-17 | 2014-04-17 | A kind of automatic speed-changing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103895799A true CN103895799A (en) | 2014-07-02 |
| CN103895799B CN103895799B (en) | 2016-02-24 |
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ID=50987462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410154169.2A Expired - Fee Related CN103895799B (en) | 2014-04-17 | 2014-04-17 | A kind of automatic speed-changing system |
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| Country | Link |
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| CN (1) | CN103895799B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017106A (en) * | 2019-12-31 | 2020-04-17 | 西南大学 | Compact type large-load central driving type self-adaptive electric driving assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5828024A (en) * | 1981-08-12 | 1983-02-18 | Sadamu Mizobuchi | Centrifugal clutch device in automatic stepped speed changer |
| CN1807178A (en) * | 2005-01-22 | 2006-07-26 | Sram德国有限公司 | Device for delivery motion switch to bicycle driving device |
| JP2006306360A (en) * | 2005-03-31 | 2006-11-09 | Fujiwara Wheel:Kk | Transmission apparatus for bicycle |
| CN201934545U (en) * | 2011-01-31 | 2011-08-17 | 重庆帅昌机械制造有限公司 | Clutch |
| CN203793556U (en) * | 2014-04-17 | 2014-08-27 | 毛泽彬 | Automatic speed changing system |
-
2014
- 2014-04-17 CN CN201410154169.2A patent/CN103895799B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5828024A (en) * | 1981-08-12 | 1983-02-18 | Sadamu Mizobuchi | Centrifugal clutch device in automatic stepped speed changer |
| CN1807178A (en) * | 2005-01-22 | 2006-07-26 | Sram德国有限公司 | Device for delivery motion switch to bicycle driving device |
| JP2006306360A (en) * | 2005-03-31 | 2006-11-09 | Fujiwara Wheel:Kk | Transmission apparatus for bicycle |
| CN201934545U (en) * | 2011-01-31 | 2011-08-17 | 重庆帅昌机械制造有限公司 | Clutch |
| CN203793556U (en) * | 2014-04-17 | 2014-08-27 | 毛泽彬 | Automatic speed changing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017106A (en) * | 2019-12-31 | 2020-04-17 | 西南大学 | Compact type large-load central driving type self-adaptive electric driving assembly |
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| Publication number | Publication date |
|---|---|
| CN103895799B (en) | 2016-02-24 |
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Granted publication date: 20160224 Termination date: 20180417 |