CN-224214603-U - Tristable electromagnetic clutch

CN224214603UCN 224214603 UCN224214603 UCN 224214603UCN-224214603-U

Abstract

The utility model discloses a tristable electromagnetic clutch which comprises an input shaft, a gear shifting shaft sleeve, a first output shaft, a second output shaft, a first soft magnetic plate, a second soft magnetic plate and a third soft magnetic plate, wherein the gear shifting shaft sleeve is slidably sleeved on the input shaft, the first output shaft and the second output shaft are respectively arranged at two sides of the gear shifting shaft sleeve, the gear shifting shaft sleeve is connected with the input shaft through a spline, two sides of the gear shifting shaft sleeve are respectively meshed with the first output shaft and the second output shaft, a permanent magnet is embedded on the peripheral wall of the gear shifting shaft sleeve, the first soft magnetic plate, the second soft magnetic plate and the third soft magnetic plate are sleeved outside the gear shifting shaft sleeve at intervals, the first soft magnetic plate is arranged at the meshing position of the first output shaft and the gear shifting shaft sleeve, the third soft magnetic plate is arranged at the meshing position of the second output shaft and the gear shifting shaft sleeve, a first coil is arranged between the first soft magnetic plate and the second soft magnetic plate, and a second coil is arranged between the second soft magnetic plate and the third soft magnetic plate. The utility model solves the technical problem that the electromagnetic clutch needs coil continuous electrifying to stabilize the gear shifting shaft sleeve, and achieves the technical effect of realizing three stable states without coil electrifying.

Inventors

WU ZONGBIN
HUANG XIANJUN
SONG BINHE
LI JUNJUN
LU SHIFENG
LIU JINGWEN

Assignees

博格华纳汽车零部件(宁波)有限公司

Dates

Publication Date: 20260508
Application Date: 20250526

Claims (8)

1. A three-stable electromagnetic clutch is characterized by comprising an input shaft (1), a gear shifting shaft sleeve (2) which is sleeved on the input shaft (1) in a sliding manner, a first output shaft (3) and a second output shaft (4) which are respectively arranged on two sides of the gear shifting shaft sleeve (2), a first soft magnetic plate (5), a second soft magnetic plate (6) and a third soft magnetic plate (7), wherein the gear shifting shaft sleeve (2) is in transmission connection with the input shaft (1) through a spline, two sides of the gear shifting shaft sleeve (2) can be respectively meshed with the first output shaft (3) and the second output shaft (4), a permanent magnet (21) is embedded on the peripheral wall of the gear shifting shaft sleeve (2), the first soft magnetic plate (5), the second soft magnetic plate (6) and the third soft magnetic plate (7) are sequentially sleeved outside the gear shifting shaft sleeve (2), the first soft magnetic plate (5) is arranged at the meshing position of the first output shaft (3) and the gear shifting shaft sleeve (2), the third soft magnetic plate (7) is arranged at the meshing position of the second output shaft (4) and the second output shaft (2), the first soft magnetic plate (6) and the second soft magnetic plate (7) are arranged between the first soft magnetic plate (92) and the second soft magnetic plate (6) and the second magnetic plate (92), and the first soft magnetic plate (6) are arranged between the first soft magnetic plate (6) and the second magnetic plate (7) and the second magnetic plate (91) The second soft magnetic plate (6) and the third soft magnetic plate (7) are both made of soft magnetic material.
2. A tristable electromagnetic clutch according to claim 1 characterised in that the permanent magnets (21) are looped centrally around the outer race of the shift sleeve (2).
3. A tristable electromagnetic clutch according to claim 2 characterised in that said second soft magnetic plate (6) is located centrally between the first output shaft (3) and the second output shaft (4), said first soft magnetic plate (5) and third soft magnetic plate (7) being symmetrically located on either side of the second soft magnetic plate (6).
4. A tristable electromagnetic clutch according to claim 3 characterised in that said second soft magnetic plate (6) is arranged perpendicularly to the input shaft (1), a second auxiliary soft magnetic member (62) is provided around the inner edge of said second soft magnetic plate (6), said second auxiliary soft magnetic member (62) extends in the axial direction of the input shaft (1), and the inner edge of said second soft magnetic plate (6) is located at the center of the outer periphery of said second auxiliary soft magnetic member (62).
5. A tristable electromagnetic clutch according to claim 3 characterised in that a spring pin (11) is fixedly arranged on the input shaft (1), the spring pin (11) is located in the centre between the first output shaft (3) and the second output shaft (4), and a first groove (22) suitable for embedding the spring pin (11) is arranged in the centre of the inner ring of the gear shifting shaft sleeve (2).
6. A tristable electromagnetic clutch according to claim 2 characterised in that the first soft magnetic plate (5) is arranged perpendicular to the input shaft (1), the face of the first soft magnetic plate (5) facing the second soft magnetic plate (6) being provided with a first auxiliary soft magnet extending in the axial direction of the input shaft (1) and being looped around the inner edge of the first soft magnetic plate (5).
7. A tristable electromagnetic clutch according to claim 2 characterised in that the third soft magnetic plate (7) is arranged perpendicular to the input shaft (1), the face of the third soft magnetic plate (7) facing the second soft magnetic plate (6) being provided with a third auxiliary soft magnetic body extending in the axial direction of the input shaft (1) and being looped around the inner edge of the third soft magnetic plate (7).
8. A tristable electromagnetic clutch according to claim 1 characterised in that a fourth soft magnetic plate (8) is fixedly arranged on the outer edge of said second soft magnetic plate (6), said fourth soft magnetic plate (8) extending in the axial direction of the input shaft (1), said first soft magnetic plate (5) being detachably fixed to the fourth soft magnetic plate (8), said third soft magnetic plate (7) being detachably fixed to the fourth soft magnetic plate (8).

Description

Tristable electromagnetic clutch Technical Field The utility model relates to the technical field of electromagnetic clutches, in particular to a tristable electromagnetic clutch. Background Along with the development of science and technology, the hybrid electric vehicle gradually becomes an ideal choice for people to come in short distance and long distance due to relatively low oil consumption, one of the disconnecting devices used between the power source and the gearbox on the market at present is an electromagnetic clutch, and the clutch is characterized in that the switching of the power source of the gearbox is realized in a mode of changing the clutch state by switching on and off. In the application scene of multiple power sources such as mixed motion, in the existing electromagnetic clutch capable of realizing three-state switching, a gear shifting shaft sleeve with a permanent magnet arranged on an outer ring is sleeved on an input shaft in a transmission mode, a shell used for installing coils is fixedly installed in a gearbox, a left coil sleeve and a right coil sleeve are sleeved outside the gear shifting shaft sleeve, and the position of the gear shifting shaft sleeve is switched by changing the power-on states of the two coils, so that the switching of two output states is realized. In the three-state electromagnetic clutch, a spring pin and a plurality of clamping grooves are arranged at the meshing position of a main shaft and a gear shifting shaft sleeve, and mechanical positioning of the gear shifting shaft sleeve is realized through matching of the spring pin and the clamping grooves, but in the transmission process of output torque, the mechanical positioning mode of the spring pin is insufficient for completing stable meshing of the gear shifting shaft sleeve and an output shaft, and a coil is still required to be continuously electrified to provide a certain magnetic force so as to enable the gear shifting shaft sleeve to be stably meshed with the output shaft. Therefore, it is necessary to design an electromagnetic clutch which can be stably engaged after the state of the shift sleeve is switched, and does not require continuous energization of a coil. Disclosure of utility model The application provides a tristable electromagnetic clutch which is used for solving the technical problem that a coil is required to be continuously electrified for stabilizing a gear shifting shaft sleeve of the electromagnetic clutch. The application provides a tristable electromagnetic clutch which comprises an input shaft, a gear shifting shaft sleeve, a first output shaft, a second output shaft, a first soft magnetic plate, a second soft magnetic plate and a third soft magnetic plate, wherein the gear shifting shaft sleeve is slidably sleeved on the input shaft, the first output shaft and the second output shaft are respectively arranged at two sides of the gear shifting shaft sleeve, the gear shifting shaft sleeve is connected with the input shaft through spline transmission, two sides of the gear shifting shaft sleeve can be respectively meshed with the first output shaft and the second output shaft, a permanent magnet is embedded on the peripheral wall of the gear shifting shaft sleeve, the first soft magnetic plate, the second soft magnetic plate and the third soft magnetic plate are sequentially sleeved outside the gear shifting shaft sleeve in a spacing mode, the first soft magnetic plate is arranged at the meshing position of the first output shaft and the gear shifting shaft sleeve, the third soft magnetic plate is arranged at the meshing position of the second output shaft and the gear shifting shaft sleeve, a first coil is arranged between the first soft magnetic plate and the second soft magnetic plate, a second coil is arranged between the second soft magnetic plate and the third soft magnetic plate, and the first soft magnetic plate is made of soft magnetic material. Through adopting above-mentioned technical scheme, inlay on the periphery wall of gear shifting axle sleeve and establish the permanent magnet, set up first soft magnetic plate, second soft magnetic plate and the third soft magnetic plate that the interval set up, through the magnetic force effect between soft magnetic plate and the permanent magnet, realize the stability of gear shifting axle sleeve under three kinds of different states. Preferably, the permanent magnet is arranged at the center of the outer ring of the gear shifting shaft sleeve in a surrounding manner. Through adopting above-mentioned technical scheme, set up the permanent magnet in the middle, realize permanent magnet and the holistic symmetry setting of axle sleeve of shifting, make the length of the axle sleeve of shifting of permanent magnet both sides the same, realize the reduction to gear shaft sleeve length, realize electromagnetic clutch's compact setting. Preferably, the second soft magnetic plate is located at the center between the first outp