CN110345172B - Clutch locking mechanism, locking clutch, two-gear transmission and pure electric vehicle - Google Patents
Clutch locking mechanism, locking clutch, two-gear transmission and pure electric vehicle Download PDFInfo
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- CN110345172B CN110345172B CN201810284197.4A CN201810284197A CN110345172B CN 110345172 B CN110345172 B CN 110345172B CN 201810284197 A CN201810284197 A CN 201810284197A CN 110345172 B CN110345172 B CN 110345172B
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- gear
- guide
- clutch
- locking
- driven
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
- F16D23/148—Guide-sleeve receiving the clutch release bearing
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/22—Locking of the control input devices
Abstract
The invention discloses a clutch locking mechanism which sequentially comprises a guide block, an outer sliding block and an inner sliding block from outside to inside; the guide block comprises a guide groove, a locking guide part and a reset guide part, the guide groove is used for guiding the outer slide block and the inner slide block along the axial direction, the locking guide part can guide and keep the inner slide block at a locking position, and the reset guide part can guide the inner slide block into the guide groove again; the outer sliding block comprises a guide table and a guide part, the guide table is embedded into the guide groove, and when the inner sliding block slides out of the guide groove along the axial direction, the guide part can guide the inner sliding block to rotate and enter the locking guide part or the reset guide part; the inner sliding block comprises a boss, the boss is embedded into the guide groove, and the outer sliding block pushes the boss. The invention also discloses a locking clutch, a two-gear transmission and a pure electric vehicle. The invention ensures that the dry clutch can meet the output characteristic requirements of the pure electric vehicle drive motor on large torque and high rotation speed.
Description
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to a clutch locking mechanism, a locking clutch, a two-gear transmission and a pure electric automobile.
Background
Compared with a single-speed-ratio speed reducer, the pure electric automobile matched with the two-gear speed changer can greatly improve the power performance of the whole automobile and improve the economy on the premise of slightly increasing the cost. The prior art proposes various two-gear transmission schemes, mainly including two-gear mechanical automatic transmissions (AMT), two-gear Automatic Transmissions (AT), and two-gear Dual Clutch Transmissions (DCT). The two-gear DCT can realize uninterrupted shifting power, has a simple transmission structure and flexible arrangement, and has a plurality of structural schemes of two-gear double-clutch transmissions disclosed in patents CN103423441A, CN106763619A, CN105485262A, US8931361B2, US20170122413 and the like. The existing dry clutch is limited by the characteristics of large torque and high rotating speed of a driving motor (such as maximum output torque 500Nm and maximum output rotating speed 12000rpm), and the transmission requirements are difficult to meet, so that the existing two-gear double-clutch transmission mostly adopts a multi-plate wet clutch. The multi-plate wet clutch has the advantages of low efficiency, large inertia, complex structure and high cost.
Therefore, it is necessary to design a clutch locking mechanism, a locking clutch, a two-gear transmission and a pure electric vehicle, which enable the dry clutch to meet the output characteristic requirements of the pure electric vehicle drive motor for large torque and high rotation speed, and apply the dry clutch to the two-gear transmission to realize the function of the two-gear and two-clutch transmission.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a clutch locking mechanism, a locking clutch, a two-gear transmission and a pure electric vehicle, wherein the clutch can meet the output characteristic requirements of a pure electric vehicle driving motor on large torque and high rotation speed, and can be applied to a two-gear transmission to realize the functions of the two-gear and two-clutch transmission.
The invention provides a clutch locking mechanism which sequentially comprises a guide block, an outer sliding block and an inner sliding block from outside to inside;
the guide block comprises a guide groove, a locking guide part and a reset guide part, the guide groove is used for guiding the outer slide block and the inner slide block along the axial direction, the locking guide part can guide and keep the inner slide block at a locking position, and the reset guide part can guide the inner slide block into the guide groove again;
the outer sliding block comprises a guide table and a guide part, the guide table is embedded into the guide groove, and when the inner sliding block slides out of the guide groove along the axial direction, the guide part can guide the inner sliding block to rotate and enter the locking guide part or the reset guide part;
the inner sliding block comprises a boss, the boss is embedded into the guide groove, and the outer sliding block pushes the boss.
Further, the guide block still includes the first barrel of cylinder, the guide slot is seted up at even interval in the inner wall of first barrel, form on the preceding terminal surface of first barrel the locking guide part with the guide part that resets, the locking guide part includes locking guide surface and backstop surface, the guide part that resets includes the guide surface that resets, the locking guide surface with the guide surface that resets is the inclined plane.
Further, the outer slider also comprises a cylindrical second cylinder, the guide platforms are formed on the outer wall of the second cylinder at uniform intervals, the guide part is formed on the front end face of the second cylinder, the guide part comprises a first guide inclined plane and a second guide inclined plane, and the first guide inclined plane and the second guide inclined plane incline towards opposite directions.
Further, the inner slide block further comprises a cylindrical third cylinder, the bosses are evenly arranged on the outer wall of the third cylinder at intervals and located at the front end of the third cylinder, the rear end of the third cylinder is inserted into the second cylinder, the rear end face of each boss is an inclined face, and the first guide inclined face and the second guide inclined face are in contact with the rear end face of each boss.
Further, the lock guide surface, the reset guide surface, the first guide slope, the second guide slope, and the rear end surface of the boss are inclined at the same angle.
The invention also provides a locking clutch which comprises a shell, a pressure plate, a driven plate, a compression spring, a release bearing and the clutch locking mechanism, wherein the external actuating mechanism pushes the release bearing, the release bearing pushes the outer sliding block, the outer sliding block pushes the inner sliding block, and the inner sliding block compresses the compression spring, so that the locking clutch is separated or combined.
The invention also provides a two-gear transmission which comprises an input shaft, an output shaft, a first-gear clutch, a second-gear clutch, a first-gear transmission mechanism and a second-gear transmission mechanism, wherein the first-gear clutch and the second-gear clutch are the locking clutches.
Further, the two-gear transmission also comprises a main reduction transmission mechanism and an intermediate shaft;
the first gear transmission mechanism comprises a first gear driving gear, a first gear driven gear and a first bearing;
the second-gear transmission mechanism comprises a second-gear driving gear and a second-gear driven gear;
the main reduction transmission mechanism comprises a main reduction driving gear, a main reduction driven gear and a second bearing;
the input shaft is fixedly connected with the second-gear driving gear, and the end part of the input shaft is connected with the driven disc of the first-gear clutch;
the first gear driving gear is supported on the input shaft through the first bearing and freely rotates relative to the input shaft, and the end part of the first gear driving gear is connected with the shell of the first gear clutch;
the second gear driving gear is meshed with the second gear driven gear;
the intermediate shaft is fixedly connected with the second-gear driven gear, and the end part of the intermediate shaft is connected with the driven disc of the second-gear clutch;
the first-gear driving gear is meshed with the first-gear driven gear;
after the first-gear driven gear is fixedly connected with the main reduction driving gear, the first-gear driven gear is supported on the intermediate shaft through the second bearing and freely rotates relative to the intermediate shaft, and the end part of the first-gear driven gear is connected with the shell of the second-gear clutch;
the main reducing driving gear is meshed with the main reducing driven gear, and the main reducing driven gear is fixedly connected with the output shaft.
Further, therein
When the first gear works, the first gear clutch is combined, the second gear clutch is disengaged, and power is output through the input shaft, the first gear clutch, the first gear driving gear, the first gear driven gear, the main reduction driving gear, the main reduction driven gear and the output shaft;
when the second gear works, the second gear clutch is combined, the first gear clutch is disengaged, and power is output through the input shaft, the second gear driving gear, the second gear driven gear, the intermediate shaft, the second gear clutch, the main reduction driving gear, the main reduction driven gear and the output shaft.
The invention also provides a two-gear transmission, which comprises an input shaft, an output shaft, a first-gear clutch, a second-gear clutch, a first-gear transmission mechanism and a second-gear transmission mechanism, and further comprises a main reduction transmission mechanism and an intermediate shaft;
the first gear transmission mechanism comprises a first gear driving gear, a first gear driven gear and a first bearing;
the second-gear transmission mechanism comprises a second-gear driving gear and a second-gear driven gear;
the main reduction transmission mechanism comprises a main reduction driving gear, a main reduction driven gear and a second bearing;
the input shaft is fixedly connected with the second-gear driving gear, and the end part of the input shaft is connected with the driven disc of the first-gear clutch;
the first gear driving gear is supported on the input shaft through the first bearing and freely rotates relative to the input shaft, and the end part of the first gear driving gear is connected with the shell of the first gear clutch;
the second gear driving gear is meshed with the second gear driven gear;
the intermediate shaft is fixedly connected with the second-gear driven gear, and the end part of the intermediate shaft is connected with the driven disc of the second-gear clutch;
the first-gear driving gear is meshed with the first-gear driven gear;
after the first-gear driven gear is fixedly connected with the main reduction driving gear, the first-gear driven gear is supported on the intermediate shaft through the second bearing and freely rotates relative to the intermediate shaft, and the end part of the first-gear driven gear is connected with the shell of the second-gear clutch;
the main reducing driving gear is meshed with the main reducing driven gear, and the main reducing driven gear is fixedly connected with the output shaft.
The invention further provides a pure electric vehicle which adopts the clutch locking mechanism, the locking clutch or the two-gear transmission.
After adopting above-mentioned technical scheme, have following beneficial effect:
the clutch locking mechanism can enable the locking clutch to be switched between a locking state and a releasing state, the release bearing and the external actuating mechanism only work for a short time when the clutch switching state is needed, and the release bearing and the external actuating mechanism can stop working when the clutch is combined for a long time or separated for a long time. This reduces the restriction of the clutch by the clutch release bearing and the external actuator, so that the clutch can transmit a greater torque and a higher rotational speed. The two-gear transmission with the locking clutch only works with the release bearing and the external actuating mechanism in the gear shifting process, and does not work with the external actuating mechanism when working for a long time in a certain gear, so that the torque and the rotating speed transmitted by the clutch can be improved, the loss on the release bearing and the external actuating mechanism can be reduced, and the efficiency is improved.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
FIG. 1 is a schematic structural diagram of a two speed transmission according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of a clutch locking mechanism in accordance with a second embodiment of the present invention;
FIG. 3 is a perspective view of a guide block of the clutch locking mechanism in accordance with a second embodiment of the present invention;
FIG. 4 is a side view of a guide block of the clutch lock mechanism in accordance with a second embodiment of the present invention;
FIG. 5 is a cross-sectional view of a guide block of the clutch lock mechanism in accordance with a second embodiment of the present invention;
FIG. 6 is a perspective view of the outer slide of the clutch locking mechanism in accordance with the second embodiment of the present invention;
FIG. 7 is a side view of the outer slide of the clutch locking mechanism in accordance with the second embodiment of the present invention;
FIG. 8 is a cross-sectional view of the outer slide of the clutch locking mechanism in accordance with the second embodiment of the present invention;
FIG. 9 is a perspective view of the inner slide of the clutch locking mechanism in accordance with the second embodiment of the present invention;
FIG. 10 is a side view of the inner slide of the clutch locking mechanism in accordance with the second embodiment of the present invention;
FIG. 11 is a cross-sectional view of the inner slide of the clutch locking mechanism in accordance with the second embodiment of the present invention;
FIG. 12 is a schematic view of the engagement between the outer slide and the inner slide in the operating state (a) of the clutch lock mechanism according to the second embodiment of the present invention;
FIG. 13 is a schematic view of the engagement between the outer slide and the inner slide in the operating state (b) of the clutch lock mechanism according to the second embodiment of the present invention;
fig. 14 is a schematic view of the engagement between the outer slider and the inner slider in the operating state (c) of the clutch lock mechanism according to the second embodiment of the present invention.
Reference symbol comparison table:
1-input shaft 2-intermediate shaft 3-second gear transmission mechanism
4-first gear transmission mechanism 5-main reduction transmission mechanism 7-output shaft
3 a-second gear driving gear 3 b-second gear driven gear 4 a-first gear driving gear
4 b-first gear driven gear 4 c-first bearing 5 a-main reduction driving gear
5 b-driving reduction driven gear 5 c-second bearing 6 a-first gear clutch
6 b-second gear clutch 61-driven plate 62-compression spring
63-release bearing 64-pressure plate 65-guide block
66-outer slide 67-inner slide 65 a-locking guide surface
65 b-reset guide surface 65 c-guide groove 65 d-first barrel
65 e-stop surface 66 a-guide land 66 b-first guide ramp
66 c-second cylinder 66 d-second lead-in ramp 67 a-boss
67 b-side 67 c-rear end 67 d-third cylinder
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
The first embodiment is as follows:
as shown in fig. 1, the two-speed transmission comprises an input shaft 1, an output shaft 7, a first-speed clutch 6a, a second-speed clutch 6b, a first-speed transmission mechanism 4 and a second-speed transmission mechanism 3, and further comprises a main reduction transmission mechanism 5 and an intermediate shaft 2;
the first gear transmission mechanism 4 comprises a first gear driving gear 4a, a first gear driven gear 4b and a first bearing 4 c;
the second gear transmission mechanism 3 comprises a second gear driving gear 3a and a second gear driven gear 3 b;
the main reduction transmission mechanism 5 comprises a main reduction driving gear 5a, a main reduction driven gear 5b and a second bearing 5 c;
the input shaft 1 is fixedly connected with a second-gear driving gear 3a, and the end part of the input shaft 1 is connected with a driven disc of a first-gear clutch 6 a;
the first gear driving gear 4a is supported on the input shaft 1 through a first bearing 4c and freely rotates relative to the input shaft 1, and the end part of the first gear driving gear 4a is connected with a shell of the first gear clutch 6 a;
the second gear driving gear 3a is meshed with the second gear driven gear 3 b;
the intermediate shaft is fixedly connected with a second-gear driven gear 3b, and the end part of the intermediate shaft 2 is connected with a driven disc of a second-gear clutch 6 b;
the first gear driving gear 4a is meshed with the first gear driven gear 4 b;
after the first-gear driven gear 4b is fixedly connected with the main reduction driving gear 5a, the first-gear driven gear is supported on the intermediate shaft 2 through a second bearing 5c and freely rotates relative to the intermediate shaft 2, and the end part of the first-gear driven gear 4b is connected with a shell of a second-gear clutch 6 b;
the main reduction driving gear 5a is meshed with the main reduction driven gear 5b, and the main reduction driven gear 5b is fixedly connected with the output shaft 7.
Specifically, the two-speed transmission operates as follows:
when the first gear works, the first gear clutch 6a is combined, the second gear clutch 6b is disengaged, and power is output through the input shaft 1, the first gear clutch 6a, the first gear driving gear 4a, the first gear driven gear 4b4b, the main reduction driving gear 5a, the main reduction driven gear 5b and the output shaft 7;
at this time, since the second clutch 6b is disengaged, although the input shaft is fixedly connected to the second driving gear 3a, the second driving gear 3a and the second driven gear 3b rotate together with the input shaft 1, but the power of the second driven gear 3b is not transmitted to the main reduction driving gear 5 a. I.e. the second gear transmission 3 is now idle.
When the second gear is operated, the second gear clutch 6b is engaged, the first gear clutch 6a is disengaged, and power is output via the input shaft 1, the second gear driving gear 3a, the driven second gear driven gear 3b, the intermediate shaft 2, the second gear clutch 6b, the main reduction driving gear 5a, the main reduction driven gear 5b, and the output shaft 7.
At this time, since the first-gear clutch 6a is disengaged, the first-gear transmission mechanism 4 does not rotate, and instead, the second-gear transmission mechanism 3 drives the main reduction driving gear 5a to rotate.
In the first embodiment, the first clutch 6a and the second clutch 6b are both dry clutches and are also lockup clutches.
As shown in fig. 1, the lockup clutch includes a housing, a pressure plate 64, a driven plate 61, a compression spring 62, a release bearing 63, and a clutch lock mechanism further including a guide block 65, an outer slider 66, and an inner slider 67. The specific structure of the clutch lock mechanism will be described in detail in embodiment two below.
In operation, an external actuator (not shown) pushes the release bearing 63, the release bearing 63 pushes the outer slide 66, the outer slide 66 pushes the inner slide 67, and the inner slide 67 compresses the compression spring 62, thereby disengaging or engaging the lock-up clutch.
The release bearing 63 is in contact with one side end face of the outer sliding block 66 and used for transmitting the thrust of an external actuating mechanism to the outer sliding block 66, the other side end face of the outer sliding block 66 is in contact with the inner sliding block 67 and used for pushing the inner sliding block 67, and the inner sliding block 67 is used for compressing the compression spring 62 to realize the separation or combination of the clutch.
When the clutch is disengaged or engaged, the clutch locking mechanism is used to lock the current state of the clutch. When the clutch needs to change the state, the clutch locking mechanism unlocks the state, the clutch can change to the next state, and then the clutch locking mechanism locks the current state of the clutch again.
In the embodiment, the clutch can be switched between a locking state and a releasing state, the release bearing and the external actuator only work for a short time when the clutch switching state is needed, and the release bearing and the external actuator can stop working when the clutch is in long combination or long separation (a normal working state of the clutch on the dual clutch transmission). This reduces the restriction of the clutch by the release bearing and the external actuator, so that the clutch can transmit higher torque and higher rotational speed.
The two-gear transmission matched with the clutch with the locking function only works with the release bearing and the external actuating mechanism in the gear shifting process, and when the two-gear transmission works for a long time on a certain gear, the release bearing and the external actuating mechanism do not work, so that the torque and the rotating speed transmitted by the clutch can be improved, the loss on the release bearing and the external actuating mechanism can be reduced, and the efficiency is improved.
Example two:
as shown in fig. 2-11, the structure of the clutch locking mechanism is schematically shown.
As shown in fig. 2, the clutch locking mechanism includes a guide block 65, an outer slider 66 and an inner slider 67 in sequence from outside to inside;
as shown in fig. 3 to 5, the guide block 65 includes a guide groove 65c for guiding the outer slider 66 and the inner slider 67 in the axial direction, a lock guide portion capable of guiding and holding the inner slider 67 in the lock position, and a return guide portion capable of reintroducing the inner slider 67 into the guide groove 65 c;
as shown in fig. 6 to 8, the outer slider 66 includes a guide table 66a and a guide portion, the guide table 66a is fitted into the guide groove 65c, and when the inner slider 67 slides out of the guide groove 65c in the axial direction, the guide portion can guide the inner slider 67 to rotate and enter into the lock guide portion or the reset guide portion;
as shown in fig. 9 to 11, the inner slider 67 includes a boss 67a, the boss 67a is fitted into the guide groove 65c, and the outer slider 66 pushes the boss 67 a.
Wherein, the guide table 66a of the outer slider 66 and the boss 67a of the inner slider 67 are both fitted into the guide groove 65c and can slide along the guide groove 65 c. The guide groove 65c allows the outer slider 66 and the inner slider 67 to slide only in the axial direction and not to rotate relative to each other. The guide table 66a of the outer slider 66 is always in the guide groove 65c, but the boss 67a of the inner slider 67 is pushed out of the guide groove 65c by the outer slider 66 and is rotated by the cooperation of the guide portion, the lock guide portion or the return guide portion, and the compression spring 62. The rotation of the inner slide 67 will be described in detail below.
Further, as shown in fig. 3, the guide block 65 further includes a cylindrical first cylinder 65d, the guide grooves 65c are uniformly spaced in an inner wall of the first cylinder 65d, a locking guide portion and a reset guide portion are formed on a front end surface of the first cylinder 65d, the locking guide portion includes a locking guide surface 65a and a stop surface 65e, the reset guide portion includes a reset guide surface 65b, and both the locking guide surface 65a and the reset guide surface 65b are inclined surfaces.
In this embodiment, there are four guide grooves 65c, and there are four sets of locking guide portions and reset guide portions. The lock guide portion is a tapered groove provided on the front end surface of the first cylinder 65d, and the tapered groove includes a lock guide surface 65a and a stopper surface 65 e. The lock guide surface 65a is gradually inclined inward in the clockwise direction in fig. 3. The return guide portion is located in the clockwise direction of the lock guide portion, is also a tapered groove opened on the front end surface of the first cylinder 65d, and includes a return guide surface 65b, and the return guide surface 65b is also gradually inclined inward in the clockwise direction in fig. 3.
In the present embodiment, the inclination angles of the lock guide surface 65a and the return guide surface 65b are the same, but the length of the lock guide surface 65a in the circumferential direction is larger than the length of the return guide surface 65b in the circumferential direction.
Further, as shown in fig. 6, the outer slider 66 further includes a second cylindrical body 66c, guide stages 66a are formed on an outer wall of the second cylindrical body 66c at regular intervals, a guide portion is formed on a front end surface of the second cylindrical body 66c, the guide portion includes a first guide inclined surface 66b and a second guide inclined surface 66d, and the first guide inclined surface 66b and the second guide inclined surface 66d are inclined in opposite directions.
There are four guide stands 66a corresponding to the four guide grooves 65 c.
Specifically, the guide portion includes a plurality of first guide slopes 66b and second guide slopes 66d, and the first guide slopes 66b and the second guide slopes 66d are arranged at intervals to constitute a serrated surface together. In the present embodiment, there are eight sets of the first guide slopes 66b and the second guide slopes 66 d.
The first and second guide slopes 66b and 66d are inclined in opposite directions, but at the same angle.
Further, as shown in fig. 9, the inner slide 67 further includes a cylindrical third cylinder 67d, the bosses 67a are uniformly spaced on the outer wall of the third cylinder 67d and located at the front end of the third cylinder 67d, the rear end of the third cylinder 67d is inserted into the rear end face 67c of the boss 67a of the second cylinder 66c as inclined faces, and the first guide inclined face 66b and the second guide inclined face 66d are in contact with the rear end face 67c of the boss 67 a.
The number of the bosses 67a is four corresponding to the arrangement of the guide grooves 65 c.
The rear end surface 67c is also a slope, and the inclination direction of the rear end surface 67c is the same as that of the first guide slope 66b, and the inclination angle is also the same.
Preferably, the lock guide surface 65a, the reset guide surface 65b, the first guide slope surface 66b, the second guide slope surface 66d, and the rear end surface 67c of the boss 67a are all inclined at the same angle.
In this embodiment, the working process of the clutch locking mechanism is as follows:
and (3) locking process:
when the boss 67a of the inner slide 67 is located in the guide groove 65c of the guide block 66, the inner slide 67 can slide along the guide groove 65c under the pushing of the outer slide 66, so as to compress the compression spring 62, and thus the clutch is disengaged (or engaged). When the clutch is disengaged (or engaged), as shown in fig. 12, the outer slide 66 further pushes the inner slide 67 so that the boss 67a of the inner slide 67 is disengaged from the guide groove 65c of the guide block 66, and the rear end surface 67c partially abuts against the first guide slope 66 b. At this time, the compression spring 62 releases a part, the compression spring 62 pushes the inner slide 67 in the opposite direction, as shown in fig. 13, the inner slide 67 rotates along the first guiding inclined surface 66b on the outer slide 66 by an angle, the rear end surface 67c just abuts on the first guiding inclined surface 66b completely, and the rear end surface 67c just abuts on the locking guiding inclined surface 65a on the guide block 65. Then the outer slide block 66 retracts, the inner slide block 67 rotates along the locking guide inclined surface 65a on the guide block 65 and is finally stopped by the stop surface 65e of the guide block 65 so as to be locked, and the clutch is locked, wherein the clutch is kept in the current state, and is separated or combined for a long time, and the release bearing 63 and the external actuating mechanism stop working.
An unlocking process:
to change the state of the clutch, the outer slider 66 pushes the inner slider 67 again so that the inner slider 67 is disengaged from the stop surface 65e of the guide block 65, as shown in fig. 14, and the rear end surface 67c of the inner slider 67 falls on the adjacent first guide slope 66b of the outer slider 66, and the inner slider 67 rotates at an angle along the first guide slope 66b of the outer slider 66. The outer slide 66 is then retracted and the inner slide 67 will rotate along the reset guide ramp 65b on the guide block 65 and eventually be released by causing the boss 67a on the inner slide 67 to drop back into the guide slot 65c on the guide block 65.
The locking and the releasing can be switched by reciprocating in this way.
Example three:
referring to fig. 1, the two-speed transmission includes an input shaft 1, an output shaft 7, a first-speed clutch 6a, a second-speed clutch 6b, a first-speed transmission mechanism 4, and a second-speed transmission mechanism 3, where the first-speed clutch 6a and the second-speed clutch 6b are not lock-up clutches.
The third embodiment is the same as the first embodiment in the arrangement of the two-speed transmission, and the difference is that: the first-gear clutch 6a and the second-gear clutch 6b are not lockup clutches, but ordinary dry clutches.
Example four:
referring to fig. 1, the lockup clutch includes a housing, a pressure plate 64, a driven plate 61, a compression spring 62, and a release bearing 63, and further includes a clutch lock mechanism that further includes a guide block 65, an outer slider 66, and an inner slider 67. The clutch lock mechanism is the same as that in the second embodiment.
By adopting the technical scheme, the pure electric automobile can obtain better power output performance and has long service life.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (10)
1. A clutch locking mechanism is characterized by comprising a guide block, an outer slide block and an inner slide block from outside to inside in sequence;
the guide block comprises a guide groove, a locking guide part and a reset guide part, the guide groove is used for guiding the outer slide block and the inner slide block along the axial direction, the locking guide part can guide and keep the inner slide block at a locking position, and the reset guide part can guide the inner slide block into the guide groove again;
the outer sliding block comprises a guide table and a guide part, the guide table is embedded into the guide groove, and when the inner sliding block slides out of the guide groove along the axial direction, the guide part can guide the inner sliding block to rotate and enter the locking guide part or the reset guide part;
the inner sliding block comprises a boss, the boss is embedded into the guide groove, and the outer sliding block pushes the boss.
2. The clutch lock mechanism according to claim 1, wherein the guide block further includes a cylindrical first cylinder, the guide grooves are provided at regular intervals in an inner wall of the first cylinder, the lock guide portion and the reset guide portion are formed on a front end surface of the first cylinder, the lock guide portion includes a lock guide surface and a stop surface, the reset guide portion includes a reset guide surface, and the lock guide surface and the reset guide surface are both inclined surfaces.
3. The clutch locking mechanism of claim 2 wherein the outer slide further includes a cylindrical second barrel, the guide lands being formed at regular intervals on an outer wall of the second barrel, the guide portion being formed on a front end surface of the second barrel, the guide portion including a first guide slope and a second guide slope, the first guide slope and the second guide slope being inclined in opposite directions.
4. The clutch locking mechanism of claim 3 wherein the inner slide further includes a cylindrical third cylinder, the bosses are evenly spaced on an outer wall of the third cylinder and located at a front end of the third cylinder, a rear end of the third cylinder is inserted into the second cylinder, a rear end surface of the bosses is an inclined surface, and the first and second guide inclined surfaces contact a rear end surface of the bosses.
5. The clutch lock mechanism according to claim 4, wherein the lock guide surface, the reset guide surface, the first guide slope surface, the second guide slope surface, and the rear end surface of the boss are inclined at the same angle.
6. A lockup clutch comprising a housing, a pressure plate, a driven plate, a compression spring, and a release bearing, characterized by further comprising the clutch locking mechanism of any one of claims 1 to 5, wherein an external actuator pushes the release bearing, the release bearing pushes the outer slider, the outer slider pushes the inner slider, and the inner slider compresses the compression spring, so that the lockup clutch is disengaged or engaged.
7. A two speed transmission comprising an input shaft, an output shaft, a first speed clutch, a second speed clutch, a first speed drive and a second speed drive, wherein the first speed clutch and the second speed clutch are the lock-up clutch of claim 6.
8. The two speed transmission of claim 7, further comprising a final drive mechanism and an intermediate shaft;
the first gear transmission mechanism comprises a first gear driving gear, a first gear driven gear and a first bearing;
the second-gear transmission mechanism comprises a second-gear driving gear and a second-gear driven gear;
the main reduction transmission mechanism comprises a main reduction driving gear, a main reduction driven gear and a second bearing;
the input shaft is fixedly connected with the second-gear driving gear, and the end part of the input shaft is connected with the driven disc of the first-gear clutch;
the first gear driving gear is supported on the input shaft through the first bearing and freely rotates relative to the input shaft, and the end part of the first gear driving gear is connected with the shell of the first gear clutch;
the second gear driving gear is meshed with the second gear driven gear;
the intermediate shaft is fixedly connected with the second-gear driven gear, and the end part of the intermediate shaft is connected with the driven disc of the second-gear clutch;
the first-gear driving gear is meshed with the first-gear driven gear;
after the first-gear driven gear is fixedly connected with the main reduction driving gear, the first-gear driven gear is supported on the intermediate shaft through the second bearing and freely rotates relative to the intermediate shaft, and the end part of the first-gear driven gear is connected with the shell of the second-gear clutch;
the main reducing driving gear is meshed with the main reducing driven gear, and the main reducing driven gear is fixedly connected with the output shaft.
9. The two speed transmission of claim 8, wherein
When the first gear works, the first gear clutch is combined, the second gear clutch is disengaged, and power is output through the input shaft, the first gear clutch, the first gear driving gear, the first gear driven gear, the main reduction driving gear, the main reduction driven gear and the output shaft;
when the second gear works, the second gear clutch is combined, the first gear clutch is disengaged, and power is output through the input shaft, the second gear driving gear, the second gear driven gear, the intermediate shaft, the second gear clutch, the main reduction driving gear, the main reduction driven gear and the output shaft.
10. A pure electric vehicle, characterized in that it employs a clutch locking mechanism according to any one of claims 1 to 5, or employs a lock-up clutch according to claim 6, or employs a two-speed transmission according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284197.4A CN110345172B (en) | 2018-04-02 | 2018-04-02 | Clutch locking mechanism, locking clutch, two-gear transmission and pure electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810284197.4A CN110345172B (en) | 2018-04-02 | 2018-04-02 | Clutch locking mechanism, locking clutch, two-gear transmission and pure electric vehicle |
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| CN110345172A CN110345172A (en) | 2019-10-18 |
| CN110345172B true CN110345172B (en) | 2021-01-19 |
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| CN113446365B (en) * | 2021-07-13 | 2023-05-30 | 北京京东乾石科技有限公司 | Speed reducer, automatic guiding transport vehicle and logistics storage system |
| CN114135593B (en) * | 2022-02-08 | 2022-05-10 | 深圳市悦成汽车技术有限公司 | Double-clutch separation structure |
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