KR-20260067065-A - INTEGRATED ACTUATOR ASSEMBLY FOR DISCONNECTOR APPARATUS AND ELECTRONIC LIMITED SLIP DIFFERENTIAL APPARATUS

KR20260067065AKR 20260067065 AKR20260067065 AKR 20260067065AKR-20260067065-A

Abstract

The present invention relates to an integrated actuator assembly for a disconnector device and an electronic differential limiter, which enables sequential operation of a vehicle's disconnector device and an LSD with a single actuator. An integrated actuator assembly for a disconnector device and an electronic limited-slip differential according to the present invention comprises: a drive motor (31); a shift fork (34) in which the connection state of the disconnector device (10), in which the outer case (11) and inner case (12) of the disconnector device (10) are connected, slides in the axial direction of the output shaft (13); and a piston unit (38) including a piston (38a) that presses the multi-plate clutch (23) in the axial direction of the output shaft (13) so that the multi-plate clutch (23) of the eLSD (Electronic Limited Slip Differential) device (20) is operated in the operating state of the eLSD device. and a ball lamp operating part (30) that slides the shift fork (34) and the piston unit (38) apart from each other while rotating by the drive motor (31); wherein the ball lamp operating part (30) is characterized by rotating by a predetermined angle after the disconnecter device (10) is in a connected state and then becoming the operating state of the eLSD device (20).

Inventors

유영배
서강수
임진승
전재원
백상범

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (15)

Drive motor; A shift fork in which the connection state of the disconnector device, in which the outer case and inner case of the disconnector device are connected, slides in the axial direction of the output shaft; A piston unit including a piston that presses the multi-plate clutch in the axial direction of the output shaft so that the multi-plate clutch of the eLSD (Electronic Limited Slip Differential) device is operated in an operating state of the eLSD device; and A ball lamp operating part that rotates by the above-mentioned drive motor and slides so that the shift fork and the piston unit move away from each other; The above ball lamp operating part is configured to rotate by a predetermined angle after the disconnecter device is in a connected state, and then to become the operating state of the eLSD device. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 1, The above ball lamp operating part is, A fixed lamp that rotates by the above-mentioned drive motor; A shift guide having a slot formed along the circumference with a defined profile, connected to the fixed lamp to convert the rotational motion of the fixed lamp into linear motion, and sliding the shift fork; A movable lamp that slides by the rotation of the fixed lamp and slides the piston unit; and A ball disposed between the fixed lamp and the movable lamp, and which pushes the movable lamp to the multi-plate clutch by the rotation of the fixed lamp; An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by including
In paragraph 2, The fixed lamp has an extension formed on one side of the fixed lamp that extends toward the shift guide, and a finger portion formed on the extension, the end of which is inserted into the slot. When the fixed lamp rotates, the finger portion rotates inside the slot and slides the shift guide. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 3, The slot of the above shift guide is, A first rotation section is formed along the circumferential direction of the above shift guide by a predetermined angle, and An inclined section connected to the above-mentioned first rotational section is formed, and A second rotation section is formed along the circumferential direction of the shift guide so as to be connected to the inclined section and positioned closer to the fixed ramp than the first rotation section. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 4, If the finger portion of the fixed lamp is located in the first rotation section, the disconnecter device is in an unfastened state and the eLSD device is in an unoperated state, and When the finger portion of the fixed lamp enters the inclined section from the first rotating section and passes through the inclined section, the disconnecter device switches to a connected state and the eLSD device is in a non-operating state. When the finger portion of the fixed lamp is positioned in the second rotation section, the disconnecter device maintains the connected state, and the eLSD device switches to an operating state. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 4, The second rotation section is formed to be longer than the first rotation section, and While the fixed lamp rotates with the finger portion positioned in the second rotation section, the fixed lamp pushes the movable lamp. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 3, The above slots are formed in plurality along the circumferential direction of the shift guide, and each of the above slots has the same profile. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 2, The above disconnector device is connected to the shift fork and slides along the output shaft, and has a sleeve that connects the outer case and the inner case. As the above shift guide slides, the above sleeve slides An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 2, On the other side of the fixed lamp, a ball receiving groove is formed having a predetermined depth from the other side of the fixed lamp and receiving the ball at a predetermined angle along the rotational direction of the fixed lamp. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In Paragraph 9, When the fixed lamp rotates and the ball is positioned between two adjacent ball receiving grooves, it pushes the movable lamp toward the multi-plate clutch. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In Paragraph 9, The above balls are arranged in multiple numbers at intervals along the rotational direction of the above fixed lamp, and A cage is provided to ensure that a plurality of the above balls maintain a distance from each other. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 2, The above piston unit is formed with a piston that protrudes toward the multi-plate clutch along the circumference of the above piston unit. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 2, A gear section is formed around the perimeter of the above fixed lamp, and The above gear part meshes with a drive gear provided on the output shaft of the drive motor. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In Paragraph 13, The above gear part is formed at a predetermined angle along the circumferential direction of the above fixed lamp. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by
In paragraph 2, On the other side of the piston unit, a return spring is provided that elastically supports the piston unit in a direction away from the multi-plate clutch. An integrated actuator assembly for a disconnector device and an electronic differential limiter, characterized by

Description

Integrated Actuator Assembly for Disconnector Apparatus and Electronic Limited Slip Differential The present invention relates to an integrated actuator assembly for a disconnector device and an electronic differential limiter, which enables sequential operation of a vehicle's disconnector device and an LSD with a single actuator. Since drag loss occurs in the non-driven wheels when driving two wheels or coasting, the four-wheel drive electric vehicle is equipped with a disconnector device that disconnects the mechanical connection between the non-driven wheels and the motor and reduction gear. The above disconnecter device allows the electric vehicle to selectively drive four wheels and two wheels, thereby reducing no-load drag loss. In addition, a separate Electronic Limited Slip Differential (eLSD) is installed to improve the driving performance of the vehicle and to compensate for driving force loss caused by wheel slip. With the provision of the eLSD, handling performance and acceleration performance are improved. Since the above disconnector device and the above eLSD device must both be equipped in the vehicle, they act as factors that increase the production cost and weight of the vehicle. In particular, when mounting the disconnecter device and the eLSD device inside the vehicle, there was a problem in that a large amount of space was required for mounting them and for mounting the actuator that operates the disconnecter device and the eLSD device. Since the actuator is mounted on the outside of the reduction gear, it must occupy minimal space for mounting, and the application of an actuator (e.g., a hydraulic actuator or a dedicated motor for the eLSD device) for operating the wet multi-plate clutch of the eLSD device is essential. However, since the actuator is installed on the outside of the disconnecter or the eLSD device, a large amount of space had to be occupied for the installation of the actuator. FIG. 1 is a cross-sectional view of a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention. FIG. 2 is a perspective view of a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention. FIG. 3 is an exploded perspective view illustrating the components of the disconnector device and the integrated actuator assembly for the electronic differential limiter according to the present invention that operate the disconnector. FIG. 4 is a cross-sectional view illustrating the components of an integrated actuator assembly for an electronic differential limiting device and a disconnecter device according to the present invention that operate an eLSD device. FIG. 5 is an exploded perspective view illustrating the components of the disconnecter device and the integrated actuator assembly for the electronic differential limiting device according to the present invention that operate the eLSD device. FIG. 6a is a side view illustrating a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention when the disconnector device is off and the eLSD device is off. FIG. 6b is a cross-sectional view illustrating a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention when the disconnector device is off and the eLSD device is off. FIG. 7a is a side view illustrating a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention when the disconnector device is ON and the eLSD device is OFF. FIG. 7b is a cross-sectional view illustrating a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention when the disconnector device is ON and the eLSD device is OFF. Fig. 7c is an enlarged view of section A of Fig. 7b. FIG. 8a is a side view illustrating a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention when the disconnector device is ON and the eLSD device is ON. FIG. 8b is a cross-sectional view illustrating a disconnector-eLSD device using a disconnector device and an integrated actuator assembly for an electronic differential limiting device according to the present invention when the disconnector device is ON and the eLSD device is ON. Fig. 8c is an enlarged view of section C of Fig. 8b. FIG. 9 is a plan view illustrating the profile of a slot formed in a shift guide in an integrated actuator assembly for a disconnector device and an el