KR-20260062442-A - Trackless seat in the rear of the vehicle

Abstract

The present invention relates to a rear trackless seat, and provides a rear trackless seat for a vehicle that separates the front and rear mounting structures of the seat to flexibly respond to the structure of the vehicle body floor surface, prevents interference even on uneven vehicle body floor surface conditions when the seat slides through a bracket including a curved movement trajectory, and is equipped with an additional power device (spiral spring) to assist the motor operating force during initial operation at the rearmost part of the seat. The present invention for achieving the above objective comprises: a pair of rear mounting bracket parts installed on the floor of a vehicle body and having guide holes formed in a rounded shape inclined forward and backward; a front mounting bracket part positioned to be spaced apart from the front of the rear mounting bracket part and configured to be rotatable in the forward and backward directions; a seat cushion frame that moves in a curved direction in the forward and backward directions while being guided along the guide holes of the rear mounting bracket part, and tilting is achieved in the front mounting bracket part through a rotating link provided at the front; a seat back frame whose lower end is rotatably coupled to the seat cushion frame and whose upper end is connected to a back mounting bracket installed in the vehicle, and which moves in an inclined direction in the forward and backward directions in conjunction with the curved movement of the seat cushion frame in the forward and backward directions; and a slide operating part installed on the seat cushion frame and providing power to enable the seat cushion frame to move while being supported in the guide holes of the rear mounting bracket part.

Inventors

• 서동학
• 홍석빈
• 신희수
• 조동우

Assignees

• 대원강업주식회사

Dates

Publication Date

20260507

Application Date

20241029

Claims (5)

1. A pair of rear mounting bracket parts installed on the floor of the vehicle body and having guide holes formed in a rounded shape that is inclined upward toward the front; A front mounting bracket portion positioned so as to be spaced apart from the front of the rear mounting bracket portion and configured to be rotatable in the front and rear directions; A seat cushion frame that moves in a curved direction in the forward and backward directions while being guided along the guide hole of the rear mounting bracket portion, and tilting is achieved at the front mounting bracket portion through a rotating link provided at the front; A seat back frame having a lower portion rotatably connected to the above-mentioned seat cushion frame and an upper portion connected to a back mounting bracket installed in the vehicle, so as to move in an inclined manner in the forward and backward directions in conjunction with the forward and backward curved movement of the seat cushion frame; A rear trackless seat of a vehicle characterized by comprising: a slide operating part installed on the seat cushion frame and providing power to enable movement while the seat cushion frame is supported in the guide hole of the rear mounting bracket part.
2. In Article 1, The above pair of rear mounting brackets is, A first rear mounting bracket configured to be located at one rear end of the seat cushion frame and comprising a bottom plate coupled to the vehicle body floor, a vertical plate formed perpendicular to the bottom plate, and a guide hole formed in a rounded shape inclined upward toward the front of the seat cushion frame from the vertical plate, into which a guide pin of the seat cushion frame is inserted to slide in a front-to-rear curved direction; A second rear mounting bracket configured to be located at the other rear end of the seat cushion frame and comprising: a bottom plate coupled to the vehicle body floor; a vertical plate formed perpendicularly to the bottom plate; a rear guide hole formed in a rounded shape inclined upward toward the front of the seat cushion frame from the vertical plate, into which a guide pin of the seat cushion frame is inserted to be guided in a front-to-rear curved direction; and a front guide hole formed in the vertical plate to be located in front of the rear guide hole, so that the slide operating part can be guided and operated. A rear trackless seat of a vehicle, characterized by comprising: a gear plate that is coupled to the vertical plate of the second rear mounting bracket and has a gear guide hole having the same curvature while communicating with the rear guide hole, wherein a rack gear is formed in the gear guide hole and the pinion gear of the slide operating part meshes with it so that the seat cushion frame can be moved by the slide operating part.
3. In Article 2, The above slide operating part is, A drive motor installed on the above seat cushion frame to provide power for the seat cushion frame to slide; A pinion gear connected to the above-mentioned drive motor and installed to mesh with the rack gear of the above-mentioned gear plate, so as to allow the seat cushion frame to slide in a curved shape along the front guide hole; A rear trackless seat of a vehicle characterized by comprising: a link plate having a central portion axially coupled to the pinion gear, one end axially coupled to a guide pin inserted into the rear guide hole, and the other end axially coupled to a connecting pin protruding from the seat cushion frame so as to be coupled when the pinion gear operates.
4. In Article 1, The above seat cushion frame is A first side frame supported by being inserted through a guide pin into a guide hole of a rear mounting bracket portion on one side; A second side frame that is supported by being inserted through a guide pin into a guide hole of a rear mounting bracket portion on the other side and on which the slide operating portion is installed; A pair of cross frames connecting the front and rear of the first side frame and the second side frame; A rear trackless seat of a vehicle characterized by comprising: a pair of first rotating plates rotatably coupled to the first side frame and the second side frame, a second rotating plate rotatably coupled to the front mounting bracket portion, and a link bar connecting the pair of first rotating plates and the second rotating plate, so as to enable tilting when the seat cushion frame moves forward and backward.
5. In Article 4, A rear trackless seat of a vehicle characterized by comprising a spiral spring that is installed such that one end is caught on a hinge pin installed on a rotating plate on one side and the other end is caught on a fixing pin installed on a seat cushion frame, and is configured to have a tendency to rotate in one direction to prevent motor overload of the slide operating part.

Description

Trackless seat in the rear of the vehicle The present invention relates to a rear trackless seat of a vehicle, wherein the front and rear mounting structures of the seat are separated to flexibly respond to the structure of the vehicle body floor surface, and a bracket including a curved movement trajectory is used to prevent interference even on uneven vehicle body floor surface conditions when the seat slides, and an additional power device is provided to assist the motor operating force of the slide operating part. Generally, rear seats in vehicles are equipped with a sliding interlocking reclining function to provide a comfortable ride for passengers. The aforementioned rear seat operates in a straight forward and backward direction via a track installed along the floor surface of the vehicle body. Since the track must be installed in a straight line along the front and rear directions of the vehicle body, the floor surface of the vehicle body must also be formed flat to install such a straight track. However, there is a problem in that the floor surface of the vehicle body cannot be formed flat because the fuel tank is typically located beneath the rear seat during vehicle body design. In order to solve these problems, the seat track structure is removed and a seat slide movement device is configured on the cushion frame side of the seat to enable a sliding function, and by operating the reclining function in conjunction with this, a comfortable ride is provided to the occupant. However, in the case of a seat equipped with a sliding device on the cushion frame side as described above, it is difficult to flexibly respond to the curved structure of the vehicle floor, and there is a problem that the seat surface becomes higher because a frame structure exists below the occupant's seating surface. FIG. 1 is a perspective view of a rear trackless seat according to the present invention viewed from one side. FIG. 2 is a perspective view of a rear trackless seat according to the present invention viewed from the other side. FIG. 3 is an exploded perspective view showing the combined structure of the seat cushion frame and the slide operating part of the present invention. FIG. 4 is an exemplary diagram showing the coupling relationship between a rotary link and a front mounting bracket part according to the present invention. FIG. 5 is an exemplary diagram showing the operating structure with mounting brackets during the sliding operation of the rear trackless seat according to the present invention. FIG. 6 is an exemplary diagram showing that no interference occurs with the vehicle body floor when the rear trackless seat according to the present invention is operated. The configuration and operation of an embodiment of the present invention will be described in detail below in conjunction with the attached drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description is omitted. FIG. 1 is a perspective view of a rear seat trackless seat according to the present invention viewed from one side; FIG. 2 is a perspective view of a rear seat trackless seat according to the present invention viewed from the other side; FIG. 3 is an exploded perspective view showing the combined structure of the seat cushion frame and the slide operating part of the present invention; FIG. 4 is an exemplary diagram showing the combined relationship between a rotary link and a front mounting bracket part according to the present invention; FIG. 5 is an exemplary diagram showing the operating structure with the mounting brackets when the rear seat trackless seat according to the present invention slides; FIG. 6 is an exemplary diagram showing that no interference occurs with the vehicle body floor surface when the rear seat trackless seat according to the present invention operates. As shown in the drawing, the rear trackless seat of the vehicle of the present invention comprises: a pair of rear mounting bracket parts (300) installed on the floor of the vehicle body (10) and having guide holes formed in a rounded shape inclined upward toward the front; a front mounting bracket part (400) positioned to be spaced apart from the front of the rear mounting bracket part (300) and configured to be rotatable in the front and rear directions; a seat cushion frame (100) that moves in a curved direction in the front and rear directions while being guided along the guide holes of the rear mounting bracket part (300), and tilting is performed in the front mounting bracket part through a rotating link (140) provided at the front; a seat back frame (200) whose lower end is rotatably coupled to the seat cushion frame (100) and whose upper end is connected to a back mounting bracket installed in the vehicle, and which moves in an inclined direction in the front and rear di