CN212803996U - Electric speed reducer disconnecting mechanism and transmission using same - Google Patents
Electric speed reducer disconnecting mechanism and transmission using same Download PDFInfo
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- CN212803996U CN212803996U CN202020869782.3U CN202020869782U CN212803996U CN 212803996 U CN212803996 U CN 212803996U CN 202020869782 U CN202020869782 U CN 202020869782U CN 212803996 U CN212803996 U CN 212803996U
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Abstract
The application provides an electric speed reducer disconnection mechanism and a transmission using the same. The electric speed reducer disconnecting mechanism comprises a transmission structure, a thrust structure and an electromagnet. The transmission structure comprises a gear and a transmission shaft which are respectively connected with the transmission structure of the speed changer and the auxiliary drive motor. The gear is movably connected with the transmission shaft through the needle bearing, so that the respective transmission is not influenced under the condition of disconnection. The electromagnet and the thrust structure are arranged on the transmission shaft, and the thrust structure comprises a dog clutch, a pushing structure and a stopping structure. The dog clutch comprises a dog driving end and a dog driven end, the dog driving end is matched and fixed with the gear, the dog driven end is fixedly connected with the transmission shaft, and the auxiliary driving motor and the transmission structure of the transmission are disconnected and combined in state through the matching of the electromagnet and the thrust structure, so that the power consumption of the transmission is reduced when the transmission is driven by a single motor.
Description
Technical Field
The application relates to the field of electric vehicle speed reducers, in particular to an electric speed reducer disconnecting mechanism and a speed changer using the same.
Background
With the improvement of the automobile manufacturing level, the pure electric automobile gradually becomes the main development direction of the future automobile. In the field of transmissions of pure electric vehicles, permanent magnet synchronous motors are widely applied to pure electric vehicles due to the characteristics of high efficiency and high power density. When the permanent magnet synchronous motor is applied to the electric speed reducer as an auxiliary drive motor, the extra power consumption of the permanent magnet synchronous motor as a load is required to be considered when the auxiliary drive output is not required for the whole vehicle. Therefore, in the design of the electric retarder, the need to disconnect the motor that is not in the secondary drive state needs to be considered.
In a traditional transmission, a power disconnecting mechanism comprises a clutch, a synchronizer and the like, but the structure of the prior art clutch, synchronizer and the like is complicated and high in cost, and a small motor or a hydraulic system is often required in the mechanism for driving. The requirements of a traditional automobile power disconnection mechanism cannot be met in the pure electric automobile, so that a clutch and a synchronizer which are complex in structure and high in cost cannot be suitable for the pure electric automobile, the pure electric transmission cannot be disconnected with an auxiliary drive motor in a state that the auxiliary drive motor is not needed, and large power consumption can be generated.
SUMMERY OF THE UTILITY MODEL
The technical problem that the pure electric transmission cannot be disconnected and an auxiliary drive motor causes power consumption increase is solved.
In order to solve the technical problem, the embodiment of the application discloses an electric speed reducer disconnecting mechanism, which comprises a transmission structure, an anti-thrust structure and an electromagnet, wherein the transmission structure comprises a gear and a transmission shaft, the gear and the transmission shaft are movably connected through a needle bearing, the electromagnet and the anti-thrust structure are arranged on the transmission shaft, the anti-thrust structure is coaxial with the transmission shaft, the anti-thrust structure comprises a canine clutch, a pushing structure and a stopping structure, the canine clutch comprises a canine driving end and a canine driven end, the canine driving end is matched and fixed with the gear, the canine driven end is fixedly connected with the transmission shaft, the stopping structure is located between the canine driving end and the canine driven end, the stopping structure is used for keeping the separation state of the canine driving end and the canine driven end, and the electromagnet is used for pushing the pushing structure to enable the canine driving end to be meshed with the canine driven end.
Further, still be equipped with the axle sleeve on the transmission shaft, the electro-magnet includes the iron core, iron core and axle sleeve clearance fit.
Furthermore, a corresponding key and a corresponding key groove are arranged on the canine driving end and the canine driven end, and the canine driving end and the canine driven end are fixedly connected through a key.
Furthermore, the active end of the dog tooth is provided with an interdigital, the gear is provided with a lightening hole, and the interdigital is used for penetrating the lightening hole to be matched and fixed with the gear.
Further, the pushing structure comprises a baffle, a fixing groove is formed in the baffle, and the fixing groove is used for matching and fixing after the interdigital penetrates through the lightening hole.
Furthermore, a position sensor is further arranged on the baffle and used for detecting the moving distance of the active end of the canine teeth.
Furthermore, the pushing structure further comprises a thrust bearing, and the thrust bearing is arranged between the baffle and the electromagnet.
Further, the blocking structure includes a spring located between the canine driving end and the canine driven end.
Further, the preventing structure further comprises a snap ring.
The embodiment of the application also discloses a vehicle transmission which comprises the electric speed reducer disconnecting mechanism.
By adopting the technical scheme, the application has the following beneficial effects:
the embodiment of the application discloses an electric speed reducer disconnection mechanism, including transmission structure, thrust structure and electro-magnet. The transmission structure comprises a gear and a transmission shaft, and the gear and the transmission shaft are respectively connected with the transmission structure of the transmission and the auxiliary drive motor. The gear is movably connected with the transmission shaft through the needle bearing, so that the respective movement of the gear and the rotating shaft is not influenced under the condition of disconnection. The electric magnet and the thrust structure are arranged on the transmission shaft, the electric magnet and the thrust structure are coaxial with the transmission shaft, the thrust structure comprises a dog clutch, a pushing structure and a stopping structure, the dog clutch comprises a dog driving end and a dog driven end, the dog driving end is matched and fixed with the gear, the dog driven end is fixedly connected with the transmission shaft, and force transmission is completed through engagement of the dog clutch. The stopping structure is located between the canine driving end and the canine driven end and used for keeping the canine driving end and the canine driven end separated, and the electromagnet is used for pushing the pushing structure to enable the canine driving end to be meshed with the canine driven end. The auxiliary driving motor and the transmission structure of the speed changer are disconnected and combined through the matching of the electromagnet and the thrust structure, so that the power consumption of the speed changer is reduced when the speed changer is driven by a single motor.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a disconnecting mechanism of an electric speed reducer according to an embodiment of the present application;
FIG. 2 is a schematic view of the connection between the dog driving end and the gear according to the embodiment of the present disclosure;
fig. 3 is a schematic connection diagram of the canine active end and the baffle according to the embodiment of the present application;
the following is a supplementary description of the drawings:
1-a gear; 2-a transmission shaft; 3-needle roller bearings; 4-an electromagnet; 5-a pushing structure; 6-a blocking structure; 7-canine active end; 8-canine driven end; 9-shaft sleeve; 10-an iron core; 11-interdigitated; 12-lightening holes; 13-a baffle; 14-a fixed groove; 15-a position sensor; 16-a thrust bearing; 17-a spring; 18-snap ring.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electric retarder release mechanism according to an embodiment of the present application, and the electric retarder release mechanism in fig. 1 includes a transmission structure, a thrust structure, and an electromagnet 4. The transmission structure comprises a gear 1 and a transmission shaft 2, wherein the gear 1 and the transmission shaft 2 are respectively connected with the transmission structure of the transmission and an auxiliary drive motor. The gear 1 is movably connected with the transmission shaft 2 through a needle bearing, so that the respective movement of the gear 1 and the rotating shaft can be ensured not to be influenced under the condition of disconnection. On transmission shaft 2 was located to electro-magnet 4 and thrust structure, electro-magnet 4, thrust structure were coaxial with transmission shaft 2, and the thrust structure includes dog clutch, promotes structure 5 and prevents structure 6, and dog clutch includes dog initiative end 7 and dog driven end 8, and dog initiative end 7 is fixed with the cooperation of gear 1, and dog driven end 8 and 2 fixed connection of transmission shaft come the transmission of completion power through the meshing of dog clutch. The stopping structure 6 is located between the canine driving end 7 and the canine driven end 8, the stopping structure 6 is used for keeping the separation state of the canine driving end 7 and the canine driven end 8, and the electromagnet 4 is used for pushing the pushing structure 5 to enable the canine driving end 7 to be meshed with the canine driven end 8. The change of the disconnection and combination state of the auxiliary drive motor and the transmission structure of the speed changer is achieved through the matching of the electromagnet 4 and the thrust structure, so that the power consumption of the speed changer is reduced when the speed changer is driven by a single motor.
In the embodiment of the application, the transmission shaft 2 is further provided with a shaft sleeve 9, the electromagnet 4 comprises an iron core 10, and the iron core 10 is in clearance fit with the shaft sleeve 9. Through clearance fit, iron core 10 can freely rotate and move on axle sleeve 9, and such design can guarantee that iron core 10 can not take place the condition of blocking when electro-magnet 4 circular telegram, is favorable to iron core 10 to promote thrust structure in the axial.
In the embodiment of the present application, the canine driving end 7 and the canine driven end 8 are provided with corresponding keys and key slots, and the canine driving end 7 and the canine driven end 8 are fixed by key connection. On the face that dog initiative end 7 and dog driven end 8 correspond, be equipped with a plurality of key structures around the center of face, form the keyway structure between the key structure, and the key and the keyway one-to-one on dog initiative end 7 and the dog driven end 8. When the dog driving end 7 is combined with the dog driven end 8, the corresponding keys are meshed with the key grooves, the gear 1 connected with the dog driving end 7 is connected with the transmission shaft 2 connected with the dog driven end 8 in a dog clutch combination mode, and meanwhile, the power of the auxiliary driving motor can be transmitted in a dog clutch meshing mode.
In the embodiment of the application, the active end 7 of the dog tooth is provided with an interdigital 11, and the gear 1 is provided with a lightening hole 12. Referring to fig. 2, fig. 2 is a schematic view illustrating a connection between the dog driving end 7 and the gear 1 according to an embodiment of the present disclosure. The interdigital 11 on the canine active end 7 is used for being matched and fixed with the gear 1 through the lightening hole 12. Through the penetrating fit of the interdigital fingers 11 and the lightening holes 12, the dog driving end 7 can rotate along with the gear 1 and can axially move within a certain range, so that a certain axial space is provided when a pushing structure is pushed. Referring to fig. 3, fig. 3 is a schematic view illustrating a connection between the canine active end 7 and the baffle 13 in the embodiment of the present application. The pushing structure 5 comprises a baffle 13, a fixing groove 14 is formed in the baffle 13, and the fixing groove 14 is used for matching and fixing after the interdigital 11 penetrates through the lightening hole 12. After the interdigital 11 is fixedly connected with the baffle 13, the baffle 13 can rotate and move along with the canine active end 7, and the thrust force from the electromagnet 4 transmitted through the baffle 13 can also push the canine active end 7 through the fixed connection to be meshed with the canine driven end 8.
In the embodiment of the present application, the baffle 13 is further provided with a position sensor 15, and the position sensor 15 is used for detecting the moving distance of the canine active end 7. The displacement of the baffle 13 can be detected by the position sensor 15, and in the process of combining the dog clutch, the distance data of the baffle 13 moving along the axial direction is transmitted to the vehicle by the position sensor 15, so that whether the dog driving end 7 and the dog driven end 8 of the dog clutch are well engaged or not can be judged. Meanwhile, in the use process, the position sensor 15 can also monitor the state of the full-pressure clutch in real time, and ensure that the electromagnet 4 is in a state of being continuously electrified to push the iron core 10 and the dog clutch is well meshed in the driving process. The pushing structure 5 further comprises a thrust bearing 16, the thrust bearing 16 is arranged between the baffle 13 and the electromagnet 4, and because a rotation speed difference can be generated in the meshing process, the rotation speed difference at two ends of the thrust bearing 16 can be offset in the process of transmitting the axial thrust of the electromagnet 4 through the arrangement of the thrust bearing 16.
In the present embodiment, the blocking structure 6 includes a spring 17, and the spring 17 is located between the canine driving end 7 and the canine driven end 8. The selection of the spring 17 needs to be selected according to the actual application scenario and the required resistance, for example, the wave spring is selected to be used as a part of the stopping structure 6, so that the wave spring is ensured not to fail under a certain thrust. The stopping structure 6 further comprises a snap ring 18, the snap ring 18 is arranged between the spring 17 and the canine driven end 8, the spring 17 presses the driving section on the gear 1 by means of the snap ring 18, and the canine driving end 7 can be ensured to be tightly attached to the gear 1 and be in a separated state from the canine driven end 8.
The embodiment of the application also discloses a vehicle transmission which comprises the electric speed reducer disconnecting mechanism.
Based on the above, several embodiments are described below.
Example 1:
in the present embodiment 1, the wave spring and the snap ring 18 are selected as the blocking structure 6 between the canine driving end 7 and the canine driven end 8, and the canine driving end 7 and the canine driven end 8 are always in a separated state by pre-compression of the wave spring when the electromagnet 4 is not energized. When the vehicle is in a dual-motor driving state during running, the electromagnet 4 is continuously energized, and the iron core 10 is subjected to the action of the magnetic field and applies thrust to the baffle 13 through the thrust bearing 16 along the direction of the transmission shaft 2. The canine tooth driving end 7 fixedly connected with the baffle 13 receives the thrust of the baffle 13, when the thrust is gradually increased, the thrust is larger than the elastic force of the wave spring after reaching a certain critical value, and the canine tooth driving end 7 is pushed to be close to the canine tooth driven end 8. Under the action of the electromagnet 4, a key on the dog driving end 7 and the dog driven end 8 is meshed with the key groove, and the dog driving end 7 is fixed with the gear 1, and the dog driven end 8 is fixed with the transmission shaft 2, so that the auxiliary driving motor is connected with a transmission structure of the transmission through the dog clutch, and the vehicle is in a dual-motor driving state. If the auxiliary driving motor is in a non-working state, the electromagnet 4 stops electrifying, and the active end 7 of the canine tooth is separated from the passive end 8 of the canine tooth due to the elastic force of the wave spring, so that the disconnection of the auxiliary driving motor is completed, the load of the working motor is reduced, and the power consumption of the transmission is reduced.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides an electric reduction gear disconnection mechanism which characterized in that: the device comprises a transmission structure, a thrust structure and an electromagnet;
the transmission structure comprises a gear (1) and a transmission shaft (2), wherein the gear (1) is movably connected with the transmission shaft (2) through a needle bearing (3);
the electromagnet (4) and the thrust structure are arranged on the transmission shaft (2), and the electromagnet and the thrust structure are coaxial with the transmission shaft (2);
the anti-thrust structure comprises a dog clutch, a pushing structure (5) and a stopping structure (6), wherein the dog clutch comprises a dog driving end (7) and a dog driven end (8);
the dog driving end (7) is matched and fixed with the gear (1), and the dog driven end (8) is fixedly connected with the transmission shaft;
the preventing structure (6) is positioned between the canine driving end (7) and the canine driven end (8), and the preventing structure (6) is used for keeping the state that the canine driving end (7) and the canine driven end (8) are separated;
the electromagnet (4) is used for pushing the pushing structure (5) to enable the canine driving end (7) to be meshed with the canine driven end.
2. The electric retarder disconnect mechanism of claim 1, wherein: the transmission shaft (2) is also provided with a shaft sleeve (9);
the electromagnet (4) comprises an iron core (10), and the iron core (10) is in clearance fit with the shaft sleeve (9).
3. The electric retarder disconnect mechanism of claim 1, wherein: the dog driving end (7) and the dog driven end (8) are provided with corresponding keys and key grooves, and the dog driving end (7) and the dog driven end (8) are fixedly connected through keys.
4. The electric retarder disconnect mechanism of claim 1, wherein: an interdigital (11) is arranged on the dog tooth driving end (7), and a lightening hole (12) is arranged on the gear (1);
the interdigital fingers (11) are used for being matched and fixed with the gear (1) through the lightening holes (12).
5. The electric retarder disconnect mechanism of claim 4, wherein: the pushing structure (5) comprises a baffle (13), and a fixing groove (14) is formed in the baffle (13);
the fixing grooves (14) are used for matching and fixing the interdigital fingers (11) after penetrating through the lightening holes (12).
6. The electric retarder disconnect mechanism of claim 5, wherein: the baffle (13) is further provided with a position sensor (15), and the position sensor (15) is used for detecting the moving distance of the canine active end (7).
7. The electric retarder disconnect mechanism of claim 5, wherein: the pushing structure (5) further comprises a thrust bearing (16), and the thrust bearing (16) is arranged between the baffle (13) and the electromagnet (4).
8. The electric retarder disconnect mechanism of claim 1, wherein: the blocking structure (6) comprises a spring (17);
the spring (17) is located between the canine driving end (7) and the canine driven end (8).
9. The electric retarder disconnect mechanism of claim 7, wherein: the blocking structure (6) further comprises a snap ring (18).
10. A vehicle transmission characterized by: comprising an electric retarder disconnect mechanism according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020869782.3U CN212803996U (en) | 2020-05-21 | 2020-05-21 | Electric speed reducer disconnecting mechanism and transmission using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020869782.3U CN212803996U (en) | 2020-05-21 | 2020-05-21 | Electric speed reducer disconnecting mechanism and transmission using same |
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| Publication Number | Publication Date |
|---|---|
| CN212803996U true CN212803996U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020869782.3U Active CN212803996U (en) | 2020-05-21 | 2020-05-21 | Electric speed reducer disconnecting mechanism and transmission using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115009006A (en) * | 2022-06-02 | 2022-09-06 | 中国第一汽车股份有限公司 | Electrically-driven disconnecting mechanism and vehicle |
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2020
- 2020-05-21 CN CN202020869782.3U patent/CN212803996U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115009006A (en) * | 2022-06-02 | 2022-09-06 | 中国第一汽车股份有限公司 | Electrically-driven disconnecting mechanism and vehicle |
| CN115009006B (en) * | 2022-06-02 | 2024-05-03 | 中国第一汽车股份有限公司 | Electric drive disconnection mechanism and vehicle |
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Effective date of registration: 20230310 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: Zhejiang liankong Technology Co.,Ltd. Address before: 315336 No. 198, Yinwan East Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province Patentee before: WEIRUI ELECTRIC AUTOMOBILE TECHNOLOGY (NINGBO) Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |