KR-20260063149-A - CAR TRUNK POWER SEAT CAPABLE OF CORRECTING POSITION AND ELASTICITY

KR20260063149AKR 20260063149 AKR20260063149 AKR 20260063149AKR-20260063149-A

Abstract

The present invention relates to a vehicle trunk power seat. The vehicle trunk power seat capable of position/elasticity correction according to the present invention comprises a seat unit installed on the rear floor of a vehicle, wherein the seat unit comprises a seat portion including a seat back and a seat cushion that are installed to be retractable on the rear floor of the vehicle and rotate relative to unfold when retractable, a link assembly having a pair of link brackets installed to be hinge-rotatably installed on the lower surface of the seat cushion and a link spring that presses the link brackets and the lower surface of the seat cushion, a mounting bracket installed on the rear floor surface of the vehicle to fix the link assembly, a seat driving unit that drives the seat portion to fold, and a control unit that controls the link driving unit that drives the link brackets to rotate. The control unit receives signals from a seat limit sensor installed on the seat portion and a link limit sensor installed on the link brackets, and when it detects that the positions of the seat portion and the link brackets are misaligned, it drives the seat portion and the link brackets back to their original stored positions with minimum power, thereby allowing the user to simply remove the seat from the vehicle trunk when needed. It can be pulled out and safely and simply stored in the floor at the rear of the vehicle, and can be pulled out from the trunk of the vehicle when needed. It can correct the position and maintain elasticity in the event that the position of the power seat becomes misaligned or the elasticity of the power seat spring decreases due to frequent use by the user or other defects.

Inventors

김재곤

Assignees

김재곤
주식회사 모리스

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (6)

Includes a seat unit installed on the rear floor of the vehicle, and The above-mentioned seat unit is, A seat portion including a seat back and a seat cushion that are installed to be pull-out on the rear floor of a vehicle and rotate relative to unfold when pulled out, and A link assembly having a pair of link brackets rotatably installed on the lower surface of the seat cushion and a link spring that presses the link brackets and the lower surface of the seat cushion, and A mounting bracket installed on the rear floor surface of the vehicle to which the above link assembly is fixed, and It includes a seat drive unit that drives the seat portion to fold, and a control unit that controls the link drive unit that drives the link bracket to rotate. A vehicle trunk power seat capable of position/elasticity correction, characterized in that the control unit receives signals from a seat limit sensor installed on the seat portion and a link limit sensor installed on the link bracket, and when it detects that the positions of the seat portion and the link bracket are misaligned, it drives the seat portion and the link bracket back to their original stored positions with the lowest power.
In Article 1, A vehicle trunk power seat capable of position/elasticity correction, characterized in that the control unit drives the seat limit sensor and the link limit sensor to their original position in a stored state at the lowest power for a predetermined period of time according to a correction value calculated from the RPM deviation values of the seat drive unit and the link drive unit.
In Article 1, The above link assembly is, A vehicle trunk power seat capable of position/elasticity correction, characterized by further including a spring elasticity adjuster installed on the link bracket and pressing the end of the link spring to adjust the elasticity of the link spring.
In Article 1, A vehicle trunk power seat capable of position/elasticity correction, characterized in that the seat limit sensor is installed on a contact support where the seat back and the seat cushion are folded and makes contact vertically.
In Article 4, The above seat back includes a seat connecting plate connected to a seat rotation shaft that is rotated by the seat drive unit, and The above seat rotation shaft has an outer surface formed in a square shape, and A vehicle trunk power seat capable of position/elasticity correction, characterized in that the seat connecting plate has a square insertion groove into which the seat rotation shaft is inserted.
In Article 5, The above sheet portion is, A seat spring installed on the seat rotation shaft between the seat back and the seat cushion, which applies elastic pressure during the folding and rotating of the seat portion, and A vehicle trunk power seat capable of position/elasticity correction, further comprising a spring support member connected to the seat rotation shaft and pressing the seat spring without misalignment.

Description

Car Trunk Power Seat Capable of Correcting Position and Elasticity The present invention relates to a vehicle trunk power seat, and more specifically, to a vehicle trunk power seat capable of correcting position and maintaining elasticity when the position of the power seat becomes misaligned or the elasticity of the power seat spring decreases due to frequent use by the user or other defects. Recently, there is a trend of using vehicles not merely as a means of transportation, but for various purposes such as camping and picnics. Technologies utilizing the rear floor or trunk area of a vehicle for various activities are being introduced, and among such prior technologies, a technology utilizing the vehicle's tailgate is being introduced. The tailgate of a vehicle refers to the rear door of the vehicle, and passengers can open the tailgate to store luggage or use it as a passageway for getting on and off. However, the above-mentioned conventional technology has a problem in that it is difficult to install in existing vehicles that were shipped without seats installed, as a seat must be installed in the tailgate of the vehicle. In addition, conventional vehicle trunk inner seats were prone to defects due to minute errors during manufacturing, or misalignment between the seat back and the seat cushion due to frequent use by users, which could lead to safety accidents or device malfunctions. In addition, conventional vehicle trunk power seats use DC reduction motors, and even if they stop at the correct position after recognizing the sensor, deviations in the reduction ratio of the DC motor occur due to RPM variations and centrifugal force, resulting in cases where accurate position control is not achieved even with the sensor present. In addition, conventional vehicle trunk power seats are equipped with springs to facilitate the folding of the seat, but due to frequent use by users, the elasticity of the springs decreases, so the seat cannot be folded smoothly even when the power seat is operated, and the position becomes misaligned or the electric motor is overloaded, causing malfunction or damage. FIG. 1 is a cross-sectional view showing the state in which a vehicle trunk power seat capable of position/elasticity correction according to the present invention is folded and stored in the trunk of a vehicle. FIG. 2 is a cross-sectional view showing a sheet unit according to the present invention. Figure 3 is a drawing showing the seat unit of Figure 2 unfolded toward the rear side of the trunk. Figure 4 is an enlarged view of part A of Figure 3. FIG. 5 is a side cross-sectional view and a rear view showing the sheet frame of the present invention. FIG. 6 is a drawing showing a sheet connecting plate of the present invention. FIG. 7 is a drawing showing the spring support of the seat portion of the present invention. FIG. 8 is a diagram showing the configuration of the control unit of the present invention. Hereinafter, a vehicle trunk power seat capable of position/elasticity correction according to the present invention will be described in detail as an example. The trunk inner seat for a vehicle according to the present invention is exemplified by being applied to a vehicle such as an SUV, where the upper surface of the rear floor is approximately the same surface as the rear frame of the vehicle, but is not necessarily limited thereto and can be applied to a sedan where the upper surface of the rear floor is lower than the rear frame of the vehicle that comes into contact with the rear door. As shown in FIGS. 1 to 7, the vehicle trunk power seat assembly (1) according to the present invention includes a seat unit (2). The above seat unit (2) is configured to include a seat portion (10), a seat driving portion (20), a link driving portion (30), a mounting bracket (40), a link assembly (50), and a control portion (60). The above seat portion (10) is installed on the upper part of the mounting bracket (40) and is configured to be hinged and rotated by the link assembly to be pulled out toward the rear side of the vehicle. The above-described seat portion (10) includes a seat back (11) and a seat cushion (12). The seat back and the seat cushion are each formed as a frame and are formed so that an outer shell surrounds their outer surface. The seat cushion (12) is positioned at the top of the link assembly (50) and hinged to be supported by the link assembly and moved in and out of the rear side of the vehicle. The above seat back (11) is positioned on the upper part of the seat cushion and is rotatably connected to the seat cushion. The seat back (11) is configured to be rotated by the seat drive unit (20) so as to be folded/unfolded toward the seat cushion. A contact support (11a) is formed at the bottom of the seat part (11), and a seat rotation shaft (13) is connected to the lower side of the contact support. The seat rotation shaft (13) is axially inserted into a seat gear that meshes with the drive unit ge