Electronically controlled power interrupter

Abstract

The present invention discloses an electric-controlled power interrupter, which is arranged at the output shaft end of a driving motor. The driving motor transfers power to the electric-controlled power interrupter through the driving motor shaft. The electric-controlled power interrupter controls the connection or disconnection of the power of the driving motor with the power of the output spline shaft. The present invention has the advantages that the electric-controlled power interrupter is coaxially arranged with the driving motor, requiring only a small axial space, and is convenient for matching and application of the existing power assembly; and a good self-locking function is achieved through the matching of the guide rod and the guide structure.

Description

Technical Field

[0001] The present invention relates to an electronically controlled power interrupter, and in particular to an electronically controlled power interrupter applied to pure electric and hybrid power vehicle models. Background Art

[0002] The electronically controlled power interrupter is mainly used in pure electric and hybrid vehicles. It is responsible for disconnecting the power of the output shaft of the drive motor under the towing condition of the drive motor, eliminating the resistance torque caused by the towing of the drive motor and effectively increasing the cruising range.

[0003] At present, new energy vehicles are still in the initial development stage. Existing models pay little attention to the drag torque generated by the drive motor drag, and few models are equipped with devices to control the intermittent power of the motor. This is where this application needs to focus on improvement. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electrically controlled power interrupting device which is coaxially arranged with a driving motor and automatically controls the output and interruption of the power of the output shaft of the driving motor under corresponding working conditions.

[0005] In order to solve the above technical problems, the present invention provides an electronically controlled power interrupting device, which is arranged at the output shaft end of the driving motor. The driving motor transfers power to the electronically controlled power interrupting device through the driving motor shaft. The electronically controlled power interrupting device controls the connection or disconnection of the power of the driving motor and the power of the output spline shaft.

[0006] The electric-controlled power interrupter comprises a small motor, a housing, a cover plate, a key, a gear sleeve, a threaded sleeve, a sleeve, an output spline shaft, a guide rod, a plurality of retaining springs, a plurality of bearings and a connecting fixture, wherein:

[0007] A small motor, the shaft of which passes through the motor shaft hole on the housing and is connected to the small gear of the gear sleeve through a key, and the small motor drives the small gear to rotate;

[0008] The gear sleeve is installed in the housing. The sliding step of the gear sleeve and the inner wall of the housing are clearance-matched to ensure that the gear sleeve and the housing are coaxially positioned and rotate relative to each other. The large gear and the small gear on the gear sleeve are tooth-engaged transmission. The small motor drives the small gear to rotate, and the small gear drives the gear sleeve to rotate through the large gear.

[0009] The threaded sleeve is installed in the gear sleeve, the external thread on the threaded sleeve is meshed with the internal thread on the gear sleeve, and the rotation of the gear sleeve drives the axial translation of the threaded sleeve;

[0010] The shaft sleeve is connected to the threaded sleeve via a bearing. The inner hole of the bearing matches the bearing seat on the shaft sleeve, and the outer circle of the bearing matches the bearing hole on the threaded sleeve. The axial translation of the threaded sleeve drives the axial translation of the shaft sleeve.

[0011] The output spline shaft is installed in the housing and connected to the housing via a bearing. The inner hole of the bearing matches the bearing seat on the output spline shaft, and the outer circle of the bearing matches the bearing hole on the housing. Another bearing is installed on the bearing seat of the output spline shaft. The output spline shaft transmits power through the output spline.

[0012] The small motor controls the electronically controlled power interrupting device to execute the action of power engagement and interruption, that is, the small motor controls the axial position of the sleeve, the internal spline on the sleeve only engages with the drive motor shaft, and the power of the drive motor and the power of the output spline shaft are in a disconnected state; the axial translation of the sleeve causes the internal spline on the sleeve to engage with the power control splines of the drive motor shaft and the output spline shaft at the same time, and the power of the drive motor and the output spline shaft are in an engaged state.

[0013] The threaded sleeve has limit springs installed on both sides of the axial position of the internal thread of the threaded sleeve, which limit the axial translation of the threaded sleeve forward and backward.

[0014] The shaft sleeve and the threaded sleeve are each provided with a retaining spring to limit the relative axial movement between the bearing and the shaft sleeve and the threaded sleeve, thereby ensuring that the axial translation of the threaded sleeve drives the axial translation of the shaft sleeve.

[0015] A cover plate is installed on one side of the shell, and several guide holes on the cover plate match one end of several guide rods one by one. The connecting and fixing parts connect and fix the cover plate and the shell through the rivet holes on the cover plate and the rivet holes on the shell.

[0016] The other ends of the plurality of guide rods pass through the plurality of guide holes of the threaded sleeve and are installed into the plurality of guide holes of the shell body, so that the threaded sleeve only moves axially.

[0017] A plurality of connecting fixings pass through the bolt holes on the small motor and fix the small motor to the housing through the threaded holes on the housing.

[0018] The positions of the mounting holes on the housing and the mounting holes on the cover plate correspond one to one, and serve as bolt holes for mounting the drive motor.

[0019] The drive motor transfers power to the electronically controlled power interrupter via the drive motor shaft. The drive motor shaft engages with the internal spline on the bushing to transmit power. A bearing hole is arranged at the end of the drive motor shaft. When the electronically controlled power interrupter is installed together with the drive motor, the bearing hole at the end of the drive motor shaft cooperates with the bearing on the bearing seat of the output spline shaft, thereby ensuring the coaxial operation of the output spline shaft and the drive motor shaft.

[0020] When the electronically controlled power interrupter disconnects the power of the drive motor, the axial position of the sleeve is controlled by the small motor and is located at a limit position close to the drive motor side. The internal spline on the sleeve only engages with the drive motor shaft and has no contact with the power control spline on the output spline shaft, resulting in the power of the drive motor and the power of the output spline shaft being disconnected.

[0021] When the electric-controlled power interrupter engages the power of the drive motor, the axial position of the sleeve is controlled by the small motor and moves from a limit position on the side close to the drive motor to a limit position on the side away from the drive motor. The internal spline on the sleeve engages with the drive motor shaft and the power control spline at the same time, and the power of the drive motor is engaged with the power of the output spline shaft.

[0022] The superior effects of the present invention are:

[0023] 1. The electronically controlled power interrupter of the present invention is coaxially arranged with the drive motor, requiring only a small axial space, and is convenient for matching and application with the existing powertrain;

[0024] 2. The electronically controlled power interrupter of the present invention achieves a good self-locking function by matching the guide rod with the guide structure. During the power transmission process, there is no need for the small motor to continuously output torque, and the sleeve will not move axially, ensuring the reliability of power transmission. If there is no self-locking function, the sleeve will move axially during the process of transmitting power with the output spline shaft due to factors such as the shaking of the entire vehicle, and there is a risk of the output spline shaft being disengaged, resulting in interruption of power transmission;

[0025] 3. The application of the electronically controlled power interrupter of the present invention further optimizes the cruising range of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 It is a schematic diagram of the assembly of the present invention and the drive motor;

[0028] Figure 2 It is a schematic diagram of the assembly of the present invention;

[0029] Figure 3 for Figure 2 AA section view in;

[0030] Description of the symbols in the figure

[0031] 1- driving motor;

[0032] 101-driving motor shaft; 102-bearing hole A;

[0033] 2- Small motor;

[0034] 201- small motor shaft; 202- bolt hole;

[0035] 3- Shell;

[0036] 301-motor shaft hole; 302-threaded hole;

[0037] 303-inner wall; 304-guide hole D;

[0038] 305-bearing hole B; 306-rivet hole G;

[0039] 307-mounting hole I;

[0040] 4-cover plate;

[0041] 401-guide hole E; 402-rivet hole H;

[0042] 403-Mounting hole J;

[0043] 5-key;

[0044] 6-pinion;

[0045] 7- gear sleeve;

[0046] 701-big gear; 702-sliding step;

[0047] 703-internal thread;

[0048] 8-Small motor bolts;

[0049] 9-guide rod;

[0050] 10-threaded sleeve;

[0051] 1001-bearing hole C; 1002-guide hole F;

[0052] 1003-external thread;

[0053] 11-shaft sleeve;

[0054] 1101-bearing seat O; 1102-internal spline;

[0055] 12-circlip K; 13-circlip L;

[0056] 14-bearing R; 15-circlip M;

[0057] 16-circlip N; 17-bearing S;

[0058] 18-bearing T;

[0059] 19- output spline shaft;

[0060] 1901-bearing seat P; 1902-power control spline;

[0061] 1903-bearing seat Q; 1904-output spline;

[0062] 20-Rivets. DETAILED DESCRIPTION

[0063] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0064] Figure 1 This is a schematic diagram of the assembly of the present invention and the drive motor. Figure 2 It is a schematic diagram of the assembly of the present invention, Figure 3 for Figure 2 AA cross-section diagram. Figure 1-Figure 3 As shown, the present invention provides an electrically controlled power interrupting device, which includes a small motor 2, a housing 3, a cover plate 4, a key 5, a pinion 6, a gear sleeve 7, a small motor bolt 8, a guide rod 9, a threaded sleeve 10, a sleeve 11, a retaining spring K12, a retaining spring L13, a bearing R14, a retaining spring M15, a retaining spring N16, a bearing S17, a bearing T18, an output spline shaft 19 and a rivet 20.

[0065] The small motor 2 controls the electric power interruption device to perform the action of power connection and interruption, and the small motor shaft 201 passes through the motor shaft hole 301 on the housing 3 and is connected to the small gear 6 through the key 5. Several small motor bolts 8 pass through the bolt holes 202 on the small motor 2 and fix the small motor 2 to the housing 3 through the threaded holes 302 on the housing 3.

[0066] The gear sleeve 7 is installed in the housing 3, the sliding step 702 is clearance-matched with the inner wall 303, the large gear 701 on the gear sleeve 7 is tooth-engaged with the small gear 6 for transmission, the small motor 2 drives the small gear 6 to rotate, and the small gear 6 drives the gear sleeve 7 to rotate through the large gear 701.

[0067] The threaded sleeve 10 is installed in the gear sleeve 7, and the external thread 1003 on the threaded sleeve 10 is meshed with the internal thread 703 on the gear sleeve 7. Several guide rods 9 pass through the guide hole F1002 and are installed in the guide hole D304. The rotation of the gear sleeve 7 drives the axial translation of the threaded sleeve 10. The guide rods 9 ensure that the threaded sleeve 10 will not rotate. The retaining spring K12 and the retaining spring N16 are installed on both sides of the axial position of the internal thread 703, which serve as the front and rear limit of the axial translation of the threaded sleeve 10.

[0068] The sleeve 11 is installed in the threaded sleeve 10 and is connected to the threaded sleeve 10 through the bearing R14. The inner hole of the bearing R14 cooperates with the bearing seat O1101 on the sleeve 11, and the outer circle of the bearing R14 cooperates with the bearing hole C1001 on the threaded sleeve 10. The retaining spring L13 and the retaining spring M15 are respectively installed on the sleeve 11 and the threaded sleeve 10, which limits the relative axial movement between the bearing R14 and the sleeve 11 and the threaded sleeve 10, and ensures that the axial translation of the threaded sleeve 10 drives the axial translation of the sleeve 11.

[0069] The output spline shaft 19 is installed in the housing 3 and connected to the housing 3 through the bearing T18. The inner hole of the bearing T18 cooperates with the bearing seat P1901 on the output spline shaft 19, and the outer circle of the bearing T18 cooperates with the bearing hole B305 on the housing 3. The bearing S17 is installed on the bearing seat Q1903 of the output spline shaft 19. The output spline shaft 19 transmits power through the output spline 1904.

[0070] The cover plate 4 is mounted on one side of the housing 3, and the guide holes E401 on the cover plate 4 are matched with one end of the guide rods 9. The rivets 20 pass through the rivet holes H402 on the cover plate 4 and the rivet holes G306 on the housing 3 to rivet the cover plate 4 and the housing 3. The mounting holes I307 on the housing 3 and the mounting holes J403 on the cover plate 4 are in corresponding positions, serving as bolt holes for mounting the drive motor 1.

[0071] like Figure 1 As shown, the drive motor 1 transfers power to the electric-controlled power interrupter through the drive motor shaft 101. The drive motor shaft 101 engages with the internal spline 1102 on the bushing 11 to transfer power. A bearing hole A102 is arranged at the end of the drive motor shaft 101. When the electric-controlled power interrupter is installed together with the drive motor 1, the bearing hole A102 cooperates with the bearing S17 to ensure the coaxial operation of the output spline shaft 19 and the drive motor shaft 101.

[0072] When the electronically controlled power interrupter disconnects the power of the drive motor 1, the axial position of the sleeve 11 is controlled by the small motor 2 and is located at a limit position close to the side of the drive motor 1. The internal spline 1102 on the sleeve 11 only engages with the drive motor shaft 101 and has no contact with the power control spline 1902 on the output spline shaft 19, resulting in the power of the drive motor 1 and the power of the output spline shaft 19 being disconnected.

[0073] When the electric-controlled power interrupter device engages the power of the drive motor 1, the axial position of the sleeve 11 is controlled by the small motor 2, and moves from the limit position on the side close to the drive motor 1 to the limit position on the side away from the drive motor 1. The internal spline 1102 on the sleeve 11 is engaged with the drive motor shaft 101 and the power control spline 1902 at the same time, and the power of the drive motor 1 is in an engaged state with the power of the output spline shaft 19.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronically controlled power interrupter, characterized in that: The electric-controlled power interrupter is arranged at the output shaft end of the drive motor. The drive motor transfers power to the electric-controlled power interrupter through the drive motor shaft. The electric-controlled power interrupter controls the connection or disconnection of the power of the drive motor with the power of the output spline shaft. The electric-controlled power interrupter comprises a small motor, a housing, a key, a gear sleeve, a threaded sleeve, a bushing, and an output spline shaft, wherein: A small motor, the shaft of which passes through the motor shaft hole on the housing and is connected to the small gear of the gear sleeve through a key, and the small motor drives the small gear to rotate; The gear sleeve is installed in the housing. The large gear and the small gear on the gear sleeve are tooth-engaged transmission, and the small gear drives the gear sleeve to rotate through the large gear; The threaded sleeve is installed in the gear sleeve, the external thread on the threaded sleeve is meshed with the internal thread on the gear sleeve, and the rotation of the gear sleeve drives the axial translation of the threaded sleeve; The shaft sleeve is connected to the threaded sleeve via a bearing, and the axial translation of the threaded sleeve drives the axial translation of the shaft sleeve; An output spline shaft is installed in the housing and connected to the housing via a bearing. The output spline shaft transmits power through the output spline. The axial position of the sleeve is controlled by a small motor, and the internal spline on the sleeve is only engaged with the drive motor shaft, so the power of the drive motor and the power of the output spline shaft are in a disconnected state; the axial translation of the sleeve causes the internal spline on the sleeve to engage with the power control splines of the drive motor shaft and the output spline shaft at the same time, so the power of the drive motor and the power of the output spline shaft are in a connected state.

2. The electronically controlled power interrupter according to claim 1, characterized in that: The threaded sleeve has limit springs installed on both sides of the axial position of the internal thread.

3. The electronically controlled power interrupter according to claim 1, characterized in that: The shaft sleeve and the threaded sleeve are each provided with a retaining spring to limit the relative axial movement between the bearing and the shaft sleeve and the threaded sleeve.

4. The electronically controlled power interrupter according to claim 1, characterized in that: The sliding step of the gear sleeve and the inner wall of the housing are clearance-matched.

5. The electronically controlled power interrupter according to claim 1, characterized in that: The bearing whose sleeve is connected to the threaded sleeve has an inner hole matched with a bearing seat on the sleeve, and an outer circle of the bearing matched with a bearing hole on the threaded sleeve.

6. The electronically controlled power interrupter according to claim 1, characterized in that: The output spline shaft is connected to the housing by a bearing, the inner hole of the bearing matches the bearing seat on the output spline shaft, the outer circle of the bearing matches the bearing hole on the housing, and another bearing is installed on the bearing seat of the output spline shaft.

7. The electronically controlled power interrupter according to claim 1, characterized in that: A cover plate is installed on one side of the shell, and a plurality of guide holes on the cover plate are matched with one end of a plurality of guide rods one by one.

8. The electronically controlled power interrupter according to claim 7, characterized in that: The other ends of the plurality of guide rods pass through the plurality of guide holes of the threaded sleeve and are installed into the plurality of guide holes of the shell body, so that the threaded sleeve only moves axially.

9. The electronically controlled power interrupter according to claim 8, characterized in that: The shell is connected to the small motor, and the positions of the mounting holes on the shell and the mounting holes on the cover plate correspond one to one, serving as bolt holes for mounting the drive motor.

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