Vehicle seat

Abstract

The present application relates to a vehicle seat including: a center frame including a coupling hole formed therein; a back frame connected to the center frame at a first point, the back frame being tiltable rearward about the first point as an axis; a sliding link movable along the coupling hole; a seat cushion frame connected to the slide link at a second point; and a connection link configured to connect the backrest frame to the seat cushion frame, and the seat cushion frame is tilted upward about an axis extending through the second point.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2024-0033970, filed on March 11, 2024, and Application No. 10-2024-0166824, filed on November 21, 2024, which are hereby incorporated by reference in their entirety. Technical Field

[0003] The present disclosure relates to a vehicle seat including a backrest frame configured to rotate together with movement of a seat cushion frame. Background Art

[0004] Vehicles have seats arranged therein and configured for passengers to sit on. Recently, research and development of autonomous vehicles and private vehicles (PBVs) has been actively underway. Consequently, the space within vehicles can be effectively utilized for various purposes. Specifically, seats need to be tilted upward to secure space within the vehicle, and seat cushions need to be slidable for passenger convenience.

[0005] When a seat slides or tilts upward, the seatback angle needs to be adjusted. Typically, when the seat slides, the seatback is tilted backward using a recliner. Furthermore, when the seat tilts upward, the seatback is held in an upright position. However, since separate power specifications or a separate seatback recliner are required to adjust the seatback angle, the production cost of a seat capable of both tilting and sliding movement may increase.

[0006] The above information disclosed in this section is only for enhancement of understanding of the technical background of the present disclosure and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the Invention

[0007] The present disclosure is directed to solving the above-mentioned problems associated with the prior art, and an object thereof is to provide a vehicle seat including a backrest frame that can be rotated along with movement of a seat cushion frame by operating only the seat cushion frame without a separate configuration for rotating the backrest frame.

[0008] In one aspect, the present disclosure provides a vehicle seat comprising: a center frame including a coupling hole formed thereon; a backrest frame connected to the center frame at a first point, the backrest frame being tiltable about an axis extending through the first point; a sliding link movable along the coupling hole; a seat cushion frame connected to the sliding link at a second point; and a connecting link configured to connect the backrest frame to the seat cushion frame, wherein the seat cushion frame is tilted upward about the axis passing through the second point.

[0009] In example embodiments, the connecting rod may connect a third point of the backrest frame to a fourth point, the third point being closer to the seat cushion frame than the first point, and the fourth point being closer to an end of the seat cushion frame than the second point.

[0010] In another example embodiment, the seat cushion frame may move as the sliding link moves, and the backrest frame may rotate about the first point as the seat cushion frame moves.

[0011] In yet another example embodiment, the sliding link may include a main body extending in a first direction so as to be inserted into coupling holes respectively provided on opposite sides of the center frame, the protrusions being connected to the main body and protruding in an upward direction perpendicular to the first direction, and each of the protrusions may be connected to the seat cushion frame at a second point.

[0012] In another example embodiment, the vehicle seat may further include a flip-up locking member connected to the sliding link or the center frame, wherein the flip-up locking member may include a hook member locked with a fixing member provided on the seat cushion frame.

[0013] In another example embodiment, the vehicle seat may further include: a flip-up lever arranged on one side of the center frame; and a first cable connected to the flip-up lever, wherein the flip-up locking component may include a connecting component connected to the first cable and a spring configured to connect the connecting component to the hook component, when the flip-up lever is operated, the first cable can pull the connecting component, and when the connecting component rotates, the hook component can rotate so as to release the lock between the flip-up locking component and the fixed component.

[0014] In a further example embodiment, each of the connecting part and the hook part may have a rotation axis extending in a second direction perpendicular to the first direction, the first direction being oriented from one side of the center frame toward the other side thereof, and the fixing part may include a portion extending in the second direction that contacts the hook part.

[0015] In another further example embodiment, the central frame may include: a fixed frame extending in a first direction, the first direction being oriented from one side of the central frame toward the other side thereof; and side frames, each side frame extending from the fixed frame in a second direction perpendicular to the first direction, the side frames respectively including coupling holes formed thereon, and the fixed frame may include a sliding bracket located thereon, the sliding bracket including an insertion hole formed therein.

[0016] In another further example embodiment, the vehicle seat may further include a circular spring arranged at a first point of each of the side frames, wherein the circular spring may include a first end fixed to the center frame and a second end fixed to the back frame, and when the seat cushion frame is tilted upward, the circular spring may apply stress in the direction of rotation of the back frame so as to maintain the flipped-up state of the seat cushion frame.

[0017] In another further example embodiment, the sliding bracket may include a sliding locking component provided thereon, which is connected to the sliding link, and when one end of the sliding locking component is separated from the insertion hole provided on the sliding bracket, the sliding link may move along the coupling hole.

[0018] In another further example embodiment, the vehicle seat may further include a sliding lever arranged on the other side of the center frame and a second cable for connecting the sliding lever to the sliding locking component, and the second cable can pull the sliding locking component together with the operation of the sliding lever so that the sliding locking component can be separated from the insertion hole.

[0019] In another further example embodiment, the connecting link may be positioned to be inclined upward with respect to a moving direction of the sliding link in a state in which the seat cushion frame is flipped down.

[0020] In another further example embodiment, when the seat cushion frame is tilted upward or downward, the backrest frame may be rotated in a direction opposite to a rotation direction of the seat cushion frame.

[0021] In another example embodiment, the vehicle seat may further include a rotation device connected to the center frame to enable the center frame to rotate.

[0022] Other aspects and example embodiments of the disclosure are discussed below.

[0023] It should be understood that the term "vehicle" or "automobile" and other similar terms used herein include general vehicles such as passenger cars, including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including various boats and ships, aircraft, etc., and also includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from sources other than petroleum). As used herein, a hybrid vehicle is a vehicle having two or more power sources, for example, a vehicle that is simultaneously powered by gasoline and electricity.

[0024] The above and other features of the present disclosure are discussed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other features of the present disclosure will be described in detail with reference to certain exemplary embodiments of the present disclosure shown in the accompanying drawings, which examples are given hereinafter by way of illustration only and therefore not limiting of the present disclosure, and in which:

[0026] Figure 1 is a diagram illustrating a vehicle seat according to an embodiment of the present disclosure;

[0027] Figure 2 is an exploded perspective view showing a vehicle seat according to an embodiment of the present disclosure;

[0028] Figure 3 is a diagram illustrating a flipped-down state of a seat cushion frame according to an embodiment of the present disclosure;

[0029] Figure 4 is a diagram illustrating a sliding state of a seat cushion frame according to an embodiment of the present disclosure;

[0030] Figure 5 is a diagram illustrating a flipped-up state of a seat cushion frame in a case where the vehicle seat according to an embodiment of the present disclosure is flipped up;

[0031] Figure 6 is a diagram illustrating a central framework according to an embodiment of the present disclosure;

[0032] Figure 7 is a diagram illustrating a sliding link according to an embodiment of the present disclosure;

[0033] Figure 8 is a diagram illustrating a slide locking member according to an embodiment of the present disclosure;

[0034] Figure 9 is a diagram illustrating a state in which a flip-up lever is pulled according to an embodiment of the present disclosure;

[0035] Figure 10 is a diagram illustrating a state in which a flip-up locking member and a fixing member are locked according to an embodiment of the present disclosure;

[0036] Figure 11 is a diagram illustrating a state in which a flip-up locking member and a fixing member are unlocked according to an embodiment of the present disclosure;

[0037] Figure 12 is a diagram illustrating a sliding lever according to an embodiment of the present disclosure;

[0038] Figure 13 is a diagram illustrating a state in which a sliding lever is pulled according to an embodiment of the present disclosure;

[0039] Figure 14 is a diagram illustrating a state in which a slide locking member is inserted into an insertion hole according to an embodiment of the present disclosure; and

[0040] Figure 15 1 is a diagram illustrating a state in which a slide locking member is separated from an insertion hole according to an embodiment of the present disclosure.

[0041] It should be understood that the accompanying drawings are not necessarily drawn to scale, and that they present a somewhat simplified representation of various exemplary features illustrating the basic principles of the present disclosure. The specific design features of the present disclosure as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the specific intended application and use environment.

[0042] In the drawings, reference numbers refer to the same or equivalent parts of the present disclosure throughout the several figures of the drawing. DETAILED DESCRIPTION

[0043] Hereinafter, various embodiments of the present disclosure will be described in detail, examples of which are shown in the accompanying drawings and described below. The advantages and features of the present disclosure and the methods for achieving the advantages and features will become more apparent with reference to the embodiments and drawings described in detail below. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various forms. The embodiments are provided to ensure that the disclosure of the present disclosure is complete and to fully convey the scope of the present disclosure to those skilled in the art to which the present disclosure belongs, and the present disclosure is limited only by the scope of the claims. In the drawings, the same reference numerals represent the same or equivalent components of the present disclosure throughout the specification.

[0044] On the other hand, in this specification, terms such as "first" and "second" are used to describe various components with the same name, and these terms are only used to distinguish one component from other components. Components are not limited by the terms in the following description.

[0045] The present disclosure has been described in detail with reference to its exemplary embodiments, and the present disclosure may be used in various other combinations, modifications, and environments. That is, it will be understood by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined in the appended claims and their equivalents. The embodiments describe the best way to implement the technical ideas of the present disclosure, and various changes required for the specific application areas and uses of the present disclosure are also possible. Therefore, the specific embodiments of the present disclosure are not intended to limit the present disclosure to the disclosed embodiments. In addition, the scope of the appended claims should be interpreted as also including other embodiments.

[0046] Figure 1 is a diagram illustrating a vehicle seat according to an embodiment of the present disclosure, and Figure 2 is an exploded perspective view illustrating a vehicle seat according to an embodiment of the present disclosure.

[0047] Reference Figure 1 and Figure 2 The vehicle seat 10 according to an embodiment of the present disclosure may include a center frame 100, a back frame 200, a sliding link 300, a cushion frame 400, and a connecting link 500. The back frame 200, the sliding link 300, and the cushion frame 400 may be connected to the center frame 100.

[0048] The sliding link 300 may be disposed within the center frame 100. The sliding link 300 may move along coupling holes 135 disposed on one side and the other side of the center frame 100. The sliding link 300 is configured to extend along a first direction X. One end and the other end of the sliding link 300 may be inserted into the coupling holes 135 disposed on one side and the other side of the center frame 100, respectively. The center frame 100 extends along a second direction Y perpendicular to the first direction X.

[0049] The backrest frame 200 may be connected to the center frame 100. The backrest frame 200 may rotate about a connection point between the backrest frame 200 and the center frame 100. A circular spring 250 may be provided at the connection point between the backrest frame 200 and the center frame 100. A first end of the circular spring 250 may be fixed to an end of the center frame 100, and a second end of the circular spring 250 may be fixed to an end of the backrest frame 200. The circular spring 250 may apply an elastic force to the backrest frame 200 in a direction in which the backrest frame 200 is erected.

[0050] The seat cushion frame 400 can be tilted upward (so that the seat cushion frame flips up) or can slide. The seat cushion frame 400 can be connected to the sliding link 300 so that it can move with the sliding link. The seat cushion frame 400 and the sliding link 300 can move in a third direction Z that is substantially perpendicular to the first direction X and the second direction Y. The seat cushion frame 400 may not be directly connected to the center frame 100. The seat cushion frame 400 can be connected to the connecting link 500. Each end of the seat cushion frame 400 can be connected to the sliding link 300 and the connecting link 500. However, the point at which the seat cushion frame 400 and the connecting link 500 are connected to each other can be closer to the end of the seat cushion frame 400 than the point at which the seat cushion frame 400 and the sliding link 300 are connected to each other. The seat cushion frame 400 can be rotatably tilted upward relative to the point at which the seat cushion frame 400 is connected to the sliding link 300.

[0051] The connecting link 500 can connect the backrest frame 200 to the seat cushion frame 400. The connecting link 500 can connect the end of the backrest frame 200 to the end of the seat cushion frame 400. Therefore, when the seat cushion frame 400 tilts upward or slides, the backrest frame 200 can rotate. For example, when the seat cushion frame 400 tilts upward, the backrest frame 200 can rotate in a direction opposite to the rotation direction of the seat cushion frame 400. Therefore, when the seat cushion frame 400 slides, the backrest frame 200 can rotate to tilt.

[0052] The flip-up locking member 600 can connect the seat cushion frame 400 to the sliding link 300, preventing the seat cushion frame 400 from tilting upward. Specifically, when the seat cushion frame 400 is in the flipped-down position, the flip-up locking member 600 can be locked with the fixing member 410 provided on the seat cushion frame 400. The flip-up locking member 600 can be fixedly coupled to the sliding link 300 or the center frame 100. To release the flip-up locking member 600, the user can operate a flip-up lever 690 provided on one side of the center frame 100.

[0053] The sliding locking member 700 may be connected to the sliding link 300. The sliding locking member 700 may be coupled to the sliding bracket 150 provided on the center frame 100. In other words, when the sliding locking member 700 and the sliding bracket 150 are locked, the movement of the sliding link 300 is restricted. To release the locking of the sliding locking member 700, the user may operate a sliding lever 790 provided on the other side of the center frame 100.

[0054] The vehicle seat 10 may include a rotation device 800 for rotating the entire vehicle seat 10. The rotation device 800 may be disposed on the lower surface of the center frame 100. When the rotation device 800 is operated, the center frame 100 rotates. The rotation device 800 may include a separate locking member (not shown) configured to lock the rotation device 800. The rotation device 800 may be connected to the vehicle floor or placed on rails on the vehicle floor and configured to allow the vehicle seat 10 to move along the rails. When rotating the vehicle seat 10, given the limited interior space of the vehicle, it is preferable to rotate the vehicle seat 10 with the seat cushion frame 400 tilted upward. However, when the seat cushion frame 400 changes from the upturned position to the downturned position due to gravity or external forces acting on the seat cushion frame 400, the seat cushion frame 400 may interfere with surrounding structures during the rotation of the vehicle seat 10. During the rotation of the vehicle seat 10, the seat cushion frame 400 may maintain its upturned position until the vehicle seat 10 rotates a certain angle or more. Unlike the above-described example, the cushion frame 400 may maintain its flipped-up state during the process in which the vehicle seat 10 performs the turning operation.

[0055] According to an embodiment of the present disclosure, the cushion frame 400 and the back frame 200 are connected to each other by the connecting link 500, so that the back frame 200 moves with the movement of the cushion frame 400. Therefore, when the cushion frame 400 slides or tilts upward, the back frame 200 can rotate.

[0056] Figure 3 2 is a diagram illustrating a flipped-down state of a seat cushion frame according to an embodiment of the present disclosure.

[0057] Reference Figures 1 to 3 The backrest frame 200 may be connected to the center frame 100 at a first point P1 and to the connecting link 500 at a third point P3. The seat cushion frame 400 may be connected to the sliding link 300 at a second point P2 and to the connecting link 500 at a fourth point P4. The sliding link 300 may include a main body 310 inserted into the coupling hole 135 and protrusions 320 connected to the main body 310, each of the protrusions protruding upward. The seat cushion frame 400 may be connected to the protrusions 320 at the second point P2.

[0058] The connecting link 500 can connect the end of the backrest frame 200 to the end of the seat cushion frame 400. The connecting link 500 can connect a third point P3 of the backrest frame 200 to a fourth point P4, where the third point P3 is closer to the seat cushion frame 400 than the first point P1, and the fourth point P4 is closer to the end of the seat cushion frame 400 than the second point P2. When the seat cushion frame 400 is tilted downward, the connecting link 500 can be positioned to be tilted upward along the third direction Z in which the sliding link 300 moves. In other words, when viewed from the bottom surface on which the vehicle seat 10 is located, the fourth point P4 can be positioned higher than the third point P3.

[0059] Figure 4 2 is a diagram illustrating a state in which a seat cushion frame slides and moves according to an embodiment of the present disclosure.

[0060] Reference Figure 1 、 Figure 2 and Figure 4When the lock between the sliding locking component 700 and the sliding bracket 150 is released, the seat cushion frame 400 can slide and move in the third direction Z. When the user applies stress to the seat cushion frame 400, the seat cushion frame 400 and the sliding link 300 can move together, and the backrest frame 200 can tilt backward due to the sliding movement of the seat cushion frame 400. For example, when the seat cushion frame 400 slides and moves, the backrest frame 200 can rotate in one direction around the first point P1. The circular spring 250 can apply stress to the backrest frame 200 to cause the backrest frame 200 to rotate in a direction opposite to the above-mentioned one direction. However, since the user applies pressure to the backrest frame 200 while the seat cushion frame 400 slides and moves, the backrest frame 200 may not rotate.

[0061] When the seat cushion frame 400 slides along the third direction Z, the angle formed between the extending direction of the connecting link 500 and the third direction Z may decrease. For example, when the seat cushion frame 400 moves maximally in the third direction Z, the angle formed between the extending direction of the connecting link 500 and the third direction Z may be 0 degrees, or the connecting link 500 may be positioned to be tilted downward relative to the third direction Z.

[0062] According to an embodiment of the present disclosure, even without a separate structure for rotating the backrest frame 200, the backrest frame 200 can rotate along with the movement of the seat cushion frame 400. Even if the user merely applies stress to the seat cushion frame 400, the backrest frame 200 automatically tilts backward. In this way, the user can easily change the state of the vehicle seat 10 to a comfortable sitting position.

[0063] Figure 5 2 is a diagram illustrating a flipped-up state of a seat cushion frame according to an embodiment of the present disclosure.

[0064] Reference Figure 1 、 Figure 2 and Figure 5When the lock between the flip-up locking member 600 and the fixing member 410 is released, the seat cushion frame 400 can tilt upward toward the backrest frame 200. When the seat cushion frame 400 tilts upward, the seat cushion frame 400 can rotate about a second axis extending through the second point P2. For example, when the seat cushion frame 400 tilts upward or downward, the backrest frame 200 can rotate in a direction opposite to the rotation direction of the seat cushion frame 400. When the seat cushion frame 400 tilts upward, the circular spring 250 can apply stress in the direction of rotation of the backrest frame 200 to maintain the flipped state of the seat cushion frame 400. Preferably, when the vehicle seat 10 is rotated, the seat cushion frame 400 can maintain its flipped state until the vehicle seat 10 is rotated a specific angle or more. When the seat cushion frame 400 tilts upward, the backrest frame 200 can rotate in a direction opposite to the rotation direction of the seat cushion frame 400 during sliding movement. For example, when the seat cushion frame 400 is tilted upward, the backrest frame 200 can rotate about a first axis extending through the first point P1 in a direction opposite to the aforementioned one direction. When the seat cushion frame 400 is tilted upward, the connecting link 500 can be positioned to tilt downward relative to the third direction Z. That is, when the seat cushion frame 400 is tilted upward, the height of the third point P3 can be higher than the height of the fourth point P4.

[0065] According to an embodiment of the present disclosure, even if a separate structure for rotating the back frame 200 is not provided, the back frame 200 can be rotated by the upward movement of the seat cushion frame 400. In addition, the upward state of the seat cushion frame 400 can be maintained by the circular spring 250 applying elastic force, thereby always maintaining the rotation of the back frame 200 in the rotation direction.

[0066] Figure 6 is a diagram illustrating a central framework according to an embodiment of the present disclosure.

[0067] Reference Figure 1 and Figure 6The center frame 100 may include a fixed frame 110 extending from one side of the center frame 100 toward the other side in a first direction X; and side frames 130 extending from the fixed frame 110 in a second direction Y perpendicular to the first direction X, wherein coupling holes 135 are respectively provided in the side frames. The side frames 130 may be disposed on one side and the other side of the center frame 100, respectively, and the sliding link 300 and the sliding bracket 150 may be disposed in the space between the two side frames 130. The sliding bracket 150 may be disposed on the fixed frame 110. The sliding bracket 150 may include at least one insertion hole 155. The end of the sliding locking member 700 may be inserted into the insertion hole 155. When the end of the sliding locking member 700 is inserted into the insertion hole 155, the sliding locking member 700 and the sliding bracket 150 are locked. When the end of the sliding locking member 700 is separated from the insertion hole 155, the sliding locking member 700 and the sliding bracket 150 are unlocked.

[0068] The flip-up lever 690 may be provided on the side frame 130 provided on one side of the center frame 100 . The slide lever 790 may be provided on the side frame 130 provided on the other side of the center frame 100 .

[0069] Figure 7 is a diagram illustrating a sliding link according to an embodiment of the present disclosure, and Figure 8 is a diagram illustrating a slide locking member according to an embodiment of the present disclosure.

[0070] Reference Figure 1 and Figures 7 and 8 The sliding link 300 may include a main body 310 extending in the first direction X for insertion into coupling holes 135 provided on opposite sides of the center frame 100; and a protrusion 320 connected to the main body 310 and formed to protrude upward in a direction perpendicular to the first direction X. Specifically, the main body 310 may include a first tube 311 extending in the first direction X and a second tube 312 having a cutoff region in its middle portion. The flip-up locking member 600 may be located in the space between the two separated second tubes 312. A through hole 325 may be provided in one of the protrusions 320, through which a second cable 780 connected to the sliding lever 790 passes. The second cable 780 may be located in the space between the first tube 311 and the second tube 312. Passing through the through hole 325, the second cable 780 may be connected to the sliding link 300 and to the sliding locking member 700 located on the sliding bracket 150. When a user operates the sliding lever 790, the second cable 780 may pull on the sliding locking member 700. Therefore, the slide locking member 700 may be separated from the insertion hole 155. The second cable 780 may pull the slide locking member 700 in the first direction X.

[0071] Figure 9 is a diagram illustrating a state in which a flip-up lever is pulled according to an embodiment of the present disclosure.

[0072] Reference Figure 1 and Figure 9 , a flip-up lever 690 may be located on the side frame 130 on one side of the center frame 100. The flip-up lever 690 may be connected to a first cable 680, and the first cable 680 may be connected to the flip-up locking member 600. When a user pulls the flip-up lever 690, the first cable 680 may pull the flip-up locking member 600, thereby releasing the lock between the flip-up locking member 600 and the fixed member 410.

[0073] Figure 10 1 is a diagram illustrating a state in which a flip-up locking member and a fixing member are locked according to an embodiment of the present disclosure.

[0074] Reference Figure 1 、 Figure 9 and Figure 10 The flip-up locking component 600 may include a hook component 610 coupled to the fixing component 410; a connecting component 630 connected to the first cable 680; and a spring 650 connecting the connecting component 630 to the hook component 610. The flip-up locking component 600 may include a housing surrounding the hook component 610, the connecting component 630, and the spring 650. The hook component 610 and the connecting component 630 may contact each other. The hook component 610 may include a receiving groove 615, and the fixing component 410 may be positioned within the receiving groove 615. The fixing component 410 may be connected to a portion of the seat cushion frame 400 extending in the first direction X and may include a portion extending in the second direction Y. For example, the fixing component 410 may be bent into a "C" shape, and a portion of the fixing component 410 may be fixed to the portion of the seat cushion frame 400 extending in the first direction X. The portion of the fixing component 410 extending in the second direction Y may contact the hook component 610. When the locking between the fixing part 410 and the hook part 610 is maintained, the cushion frame 400 connected to the fixing part 410 may not be tilted upward.

[0075] Figure 11 1 is a diagram illustrating a state in which a flip-up locking part and a fixing part are unlocked according to an embodiment of the present disclosure.

[0076] Reference Figure 1 、 Figure 9 and Figure 11When the tilt-up lever 690 is operated, the first cable 680 pulls the connecting component 630, and when the connecting component 630 rotates, the spring 650 pulls the hook component 610. The hook component 610 rotates due to the spring 650, and the lock between the tilt-up locking component 600 and the fixed component 410 is released. In other words, the hook component 610 can rotate due to the elastic force of the spring 650, rather than by the connecting component 630 physically pressing the hook component 610. The rotation axis of each of the connecting component 630 and the hook component 610 can extend in a second direction Y perpendicular to the first direction X extending from one side of the center frame 100 toward the other side thereof. When the hook component 610 rotates about the rotation axis extending in the second direction Y, the fixed component 410 can be released from the receiving groove 615 of the hook component 610. Therefore, when a user applies an external force to the seat cushion frame 400, the seat cushion frame 400 can tilt upward.

[0077] Figure 12 is a diagram illustrating a sliding lever according to an embodiment of the present disclosure, and Figure 13 is a diagram illustrating a state in which a sliding lever is pulled according to an embodiment of the present disclosure.

[0078] Reference Figure 1 、 Figure 12 and Figure 13 When a user sits on the vehicle seat 10, they can pull the sliding lever 790 upward. The sliding lever 790 can be rotated by the stress applied to the sliding lever 790, and the second cable 780 can be pulled by the rotation of the sliding lever 790. The second cable 780 can be connected to the sliding locking member 700 by passing through the coupling hole 135 and the through hole 325. When the user operates the sliding lever 790, the locking of the sliding locking member 700 is released, and the seat cushion frame 400 can slide and move.

[0079] Figure 14 is a diagram showing a state in which a slide locking member according to an embodiment of the present disclosure is inserted into an insertion hole, and Figure 15 1 is a diagram illustrating a state in which a slide locking member is separated from an insertion hole according to an embodiment of the present disclosure.

[0080] Reference Figure 1 、 Figure 14 and Figure 15When the second cable 780 is pulled, the sliding locking member 700 can rotate. The rotation axis of the sliding locking member 700 can be substantially the same as the third direction Z. The end of the sliding locking member 700 can be inserted into the insertion hole 155 of the sliding bracket 150 in a locked state. However, when the second cable 780 is pulled, the end of the sliding locking member 700 can be separated from the insertion hole 155 of the sliding bracket 150. When the end of the sliding locking member 700 is separated from the insertion hole 155 of the sliding bracket 150, the fixed connection between the sliding link 300 and the center frame 100 can be released. Therefore, the sliding link 300 can move along the coupling hole 135, and the seat cushion frame 400 can slide and move.

[0081] As apparent from the above description, the present disclosure provides the following effects.

[0082] First, since the seat cushion frame and the backrest frame are connected to each other by the connecting rod, the backrest frame can move with the movement of the seat cushion frame. Therefore, when the seat cushion frame slides or tilts upward, the backrest frame can rotate.

[0083] Second, even without a separate mechanism for rotating the backrest frame, the backrest frame rotates as the seat cushion frame moves. Simply by applying pressure to the seat cushion frame, the backrest frame automatically tilts backward. This allows the user to easily adjust the vehicle seat to a comfortable sitting position.

[0084] Third, even if a separate structure for rotating the backrest frame is not provided, the backrest frame can rotate as the seat cushion frame flips up. In addition, the flipped-up state of the seat cushion frame can be maintained by a circular spring configured to apply elastic force, thereby always maintaining the rotation of the backrest frame 200 in the rotation direction.

[0085] Although various embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be understood by those skilled in the art that changes can be made in these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined in the appended claims and their equivalents. Therefore, the above embodiments should be understood to be illustrative in all aspects and should not be regarded as restrictive.

Claims

1. A vehicle seat, comprising: a central frame, wherein a coupling hole is formed on the central frame; a back frame connected to the center frame at a first point, the back frame being tiltable about a first axis extending through the first point; a sliding connecting rod movable along the connecting hole; a seat cushion frame connected to the sliding link at a second point; as well as a connecting link configured to connect the backrest frame to the seat cushion frame, The seat cushion frame is configured to tilt upward about a second axis passing through the second point.

2. The vehicle seat according to claim 1, wherein The connecting link is configured to connect a third point of the backrest frame, the third point being located closer to the seat cushion frame than the first point, to a fourth point, the fourth point being located closer to an end of the seat cushion frame than the second point.

3. The vehicle seat according to claim 1, wherein The seat cushion frame is configured to move as the sliding link moves, and the backrest frame rotates about the first point as the seat cushion frame moves.

4. The vehicle seat according to claim 1, wherein The sliding link includes a main body extending in a first direction so as to be inserted into the coupling holes respectively provided at opposite sides of the center frame, and a protrusion connected to the main body and protruding in an upward direction perpendicular to the first direction, and Each of the protrusions is configured to be connected to the seat cushion frame at the second point.

5. The vehicle seat according to claim 1 , further comprising a flip-up locking member configured to be connected to the sliding link or the center frame, in, The flip-up locking member includes a hook member configured to be locked with a fixing member provided on the seat cushion frame.

6. The vehicle seat according to claim 5, further comprising a flip-up lever and a first cable, the flip-up lever being provided at one side of the center frame, the first cable being configured to be connected to the flip-up lever, wherein The flip-up locking member includes a connecting member connected to the first cable and a spring configured to connect the connecting member to the hook member, and When the flip-up lever is operated, the first cable is configured to pull the connecting member, and when the connecting member is rotated, the hook member is configured to rotate so as to release the locking between the flip-up locking member and the fixing member.

7. The vehicle seat according to claim 6, wherein A rotation axis of each of the connecting member and the hook member extends in a second direction perpendicular to the first direction, the first direction being oriented from one side of the center frame to the other side of the center frame, and The fixing member includes a portion extending in the second direction, the portion being in contact with the hook member.

8. The vehicle seat according to claim 1, wherein The central frame includes: a fixed frame extending in a first direction, the first direction being oriented from one side of the central frame to the other side of the central frame; and side frames, each of the side frames extending from the fixed frame in a second direction perpendicular to the first direction, the side frames respectively having the coupling holes formed thereon, and A sliding bracket is provided on the fixing frame, and the sliding bracket includes an insertion hole formed therein.

9. The vehicle seat according to claim 8, further comprising a circular spring provided at a first point of each of the side frames, wherein The circular spring includes a first end and a second end, the first end being fixed to the center frame and the second end being fixed to the backrest frame, and When the seat cushion frame is tilted upward, the circular spring is configured to apply a force in a direction in which the backrest frame rotates to maintain the flipped-up state of the seat cushion frame.

10. The vehicle seat according to claim 8, wherein The sliding bracket is provided with a sliding locking component, which is connected to the sliding link, and The sliding link is configured to be movable along the coupling hole when an end portion of the sliding locking member is separated from the insertion hole provided in the sliding bracket.

11. The vehicle seat according to claim 10, further comprising a sliding lever provided at the other side of the center frame and a second cable configured to connect the sliding lever to the sliding locking member, in, The second cable is configured to pull the slide locking member as the slide lever is operated, so that the slide locking member is separated from the insertion hole.

12. The vehicle seat according to claim 1, wherein The connecting link is positioned to be inclined upward with respect to a moving direction of the sliding link in a flip-down state of the seat cushion frame.

13. The vehicle seat according to claim 1, wherein When the seat cushion frame is tilted upward or downward, the backrest frame is rotated in a direction opposite to a rotation direction of the seat cushion frame. 14 . The vehicle seat according to claim 1 , further comprising a rotating device connected to the center frame to enable the center frame to rotate.

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