Vehicle seat

Abstract

A vehicle seat may include a seat frame assembly including a seat cushion frame that is foldable upward and downward; a rotating device configured to rotate the seat frame assembly; a rotating lever configured to unlock the rotating device; and a hook rotating together with the rotating lever to fix the seat cushion frame.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2024-0033968, filed on March 11, 2024, and Korean Patent Application No. 10-2024-0141496, filed on October 16, 2024, which are hereby incorporated by reference in their entirety. Technical Field

[0003] The present disclosure relates to a vehicle seat including a structure for preventing a seat cushion frame from folding downward when a seat frame assembly is unlocked for rotation. Background Art

[0004] The vehicle is provided with seats for passengers to sit in. Recently, the development of autonomous vehicles and purpose-built vehicles (PBVs) is underway, and therefore, the space in the vehicle may be transformed into a space for performing various functions.

[0005] Vehicle seats can be freely moved or rotated, and unnecessary seats can be stowed to create space. When not in use, seats can be folded upward and stowed. However, if a seat is rotated without folding upward, the rotation can interfere with other vehicle structures. Furthermore, even when a seat is rotated in its folded state, releasing the folded position can lead to problems such as difficulty rotating the seat or damage. Summary of the Invention

[0006] The present disclosure is made in an effort to solve the above-mentioned problems associated with the prior art, and an object of the present disclosure is to provide a vehicle seat including a structure for preventing a seat cushion frame from folding downward when a seat frame assembly is unlocked for rotation.

[0007] In one aspect, the present disclosure provides a vehicle seat comprising: a seat frame assembly including a seat cushion frame foldable upward and downward; a rotating device configured to rotate the seat frame assembly; a rotating lever configured to unlock the rotating device; and a hook rotating with the rotating lever to fix the seat cushion frame.

[0008] In a preferred embodiment, the vehicle seat may further include a fixing pin protruding toward an outer side of the seat cushion frame, and the hook may be engaged with the fixing pin by rotating.

[0009] In another preferred embodiment, when the seat cushion frame is in the upwardly folded state and the rotating device is unlocked by the rotating lever, the hook may engage with the fixing pin to prevent the seat cushion frame from being folded downward.

[0010] In another preferred embodiment, the vehicle seat may further include a shaft configured to connect the hook and the rotating rod.

[0011] In another preferred embodiment, the vehicle seat may further include an elastic body configured to connect the rotating rod and the seat cushion frame, and the elastic body may apply a force to the rotating rod so that the hook maintains a state of being engaged with the fixing pin.

[0012] In another preferred embodiment, the vehicle seat may further include an elastic body configured to connect the rotating rod and the seat cushion frame, and when the seat cushion frame is in an upward folded state and the rotating device is in a locked state where no external force is applied to the rotating device, the elastic body may apply a force to the rotating rod so that the hook moves away from the fixing pin.

[0013] In a further preferred embodiment, the hook may be rotated away from the securing pin when the seat frame assembly is rotated in the folded-up condition of the seat cushion frame.

[0014] In another further preferred embodiment, the vehicle seat may further include an elastic body configured to connect the rotating rod and the seat cushion frame, and in a state where the hook is completely rotated away from the fixing pin, the elastic body may apply force to the rotating rod so that the hook moves away from the fixing pin.

[0015] In another further preferred embodiment, the rotating device may include: a base plate coupled to the floor of the vehicle or coupled to a moving rail provided on the floor of the vehicle, the base plate including a fixing groove; and a rotating plate provided on the base plate and coupled to the seat frame assembly to allow the seat frame assembly to rotate based on an external force, and the rotating rod may be connected to the rotating plate of the rotating device by a wire.

[0016] In another further preferred embodiment, the rotating plate may include: a rotating rod connected to the wire; an inner plate including a locking pin accommodating groove, the locking pin accommodating groove being configured to accommodate the locking pin so that the locking pin is movable in the locking pin accommodating groove; and a locking pin that moves together with the rotating rod and moves in the locking pin accommodating groove in a direction of insertion into the fixing groove, and when the wire is pulled by the rotating rod, the rotating rod can be rotated, and the locking pin can be separated from the fixing groove by the rotation of the rotating rod, so that the seat frame assembly becomes rotatable.

[0017] In another further preferred embodiment, the fixing groove of the base plate is provided as a recessed portion on the inner surface of the base plate, and a plurality of guide portions protruding toward the inner plate are formed on the inner surface of the base plate, and the fixing groove and the guide portions may be formed at different heights in a direction from the rotating device toward the seat frame assembly.

[0018] In another further preferred embodiment, one end of each locking pin may be inserted into a fixing groove, and the remaining end of each locking pin may contact a guide portion during a rotation process of the seat frame assembly, and wherein the one end and the remaining end of each fixing pin may be formed at different heights in a stepped manner.

[0019] In another further preferred embodiment, one end of each locking pin can be separated from a fixing groove by rotation of the rotating lever, and during the rotation process of the seat frame assembly, the remaining end of each locking pin can contact a guide portion, and when the remaining end of each locking pin contacts the guide portion, one end of each locking pin can be moved toward the outside of the inner panel so that the wire is pulled by the rotating lever.

[0020] In another further preferred embodiment, the wire is pulled by the rotating lever so that the hook moves away from the fixing pin and the seat cushion frame can be folded downward.

[0021] In another further preferred embodiment, the seat frame assembly may further include a center frame and a back frame, the back frame and the seat cushion frame may be coupled to the center frame, and the center frame and the rotating device may be connected such that the center frame may become rotatable when the rotating device is unlocked.

[0022] In another further preferred embodiment, the vehicle seat may further include a fixing pin configured to protrude toward an outer side of the seat cushion frame, and when the seat cushion frame is rotated in an upwardly folded state of the seat cushion frame, the hook may rotate from a state engaged with the fixing pin to a state spaced apart from the fixing pin.

[0023] Other aspects and preferred embodiments of the disclosure are discussed below.

[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 now be described in detail with reference to certain exemplary embodiments thereof as illustrated in the accompanying drawings, which are given by way of example only and therefore do not limit the present disclosure, wherein:

[0026] Figure 1 is a view showing a vehicle seat according to one embodiment of the present disclosure;

[0027] Figure 2 yes Figure 1 Exploded view of vehicle seats;

[0028] Figure 3 is a view showing a rotating device according to one embodiment of the present disclosure;

[0029] Figure 4is a view showing a rotating device located on a moving track according to one embodiment of the present disclosure;

[0030] Figure 5 is a view showing a fixing frame assembly according to one embodiment of the present disclosure;

[0031] Figure 6 yes Figure 5 Exploded view of the fixed frame assembly;

[0032] Figure 7 and Figure 8 is a view illustrating a locked state of a seat cushion frame according to one embodiment of the present disclosure;

[0033] Figure 9 is a view illustrating an unlocked state of a seat cushion frame according to one embodiment of the present disclosure;

[0034] Figure 10 is a view showing one surface of a rotating device according to one embodiment of the present disclosure;

[0035] Figure 11 is a view showing another surface of the rotating device according to one embodiment of the present disclosure;

[0036] Figure 12 is a view for explaining the inner surface of a bottom plate according to one embodiment of the present disclosure;

[0037] Figure 13 is a view showing an upwardly folded state of a seat cushion frame according to one embodiment of the present disclosure;

[0038] Figure 14 and Figure 15 is a view showing an unlocked state of a rotating device according to one embodiment of the present disclosure;

[0039] Figure 16 is a view illustrating rotation of a seat frame assembly according to one embodiment of the present disclosure;

[0040] Figure 17 and Figure 18 is a view illustrating a process of rotating a rotating device according to one embodiment of the present disclosure; and

[0041] Figure 19 and Figure 20 is a view illustrating a state in which the rotation of the rotating device is completed according to one embodiment of the present disclosure.

[0042] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather represent in a somewhat simplified manner various preferred features illustrating the basic principles of the present disclosure. The specific design features of the present disclosure disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the specific intended application and use environment.

[0043] In the drawings, like reference numerals refer to the same or equivalent parts of the present disclosure throughout the several figures of the drawing. DETAILED DESCRIPTION

[0044] The advantages and features of the present disclosure and their implementation methods will become apparent from the following description of the embodiments in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed herein, but can be implemented in various forms, and these embodiments are provided to make the description of the present disclosure detailed and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the scope of the present disclosure is limited only by the claims. In the following description of the embodiments, the same or similar elements are represented by the same reference numerals even if they are depicted in different drawings.

[0045] Additionally, in the following description of the embodiments, since elements have the same name, terms such as “first” and “second” are used only to distinguish between the elements, and no sequence or order is implied unless clearly indicated by the context.

[0046] The specific embodiments are an explanation of the present disclosure. In addition, the specific embodiments are intended to illustrate exemplary embodiments of the present disclosure, and the present disclosure can be used in various other combinations, modifications and environments. That is, changes or modifications can be made within the scope of the present disclosure disclosed in the specification, the scope equivalent to the disclosed content and / or the technology or knowledge in the art. The following examples illustrate the best way to implement the technical ideas of the present disclosure, and various changes required for the specific application fields and uses of the present disclosure are also possible. Therefore, the following specific embodiments of the present disclosure are not intended to limit the present disclosure to the disclosed embodiments. In addition, the appended claims should be interpreted as including other embodiments.

[0047] Figure 1 is a view showing a vehicle seat according to one embodiment of the present disclosure, Figure 2 yes Figure 1 Exploded view of a vehicle seat.

[0048] Reference Figure 1 and Figure 2The vehicle seat may include: a seat frame assembly 10 including a seat cushion frame 100 that can be folded upward and downward; a fixed frame assembly 200 configured to lock the seat cushion frame 100; and a rotating device 400 connected to the seat frame assembly 10 to rotate the seat frame assembly 10. Rotating the seat frame assembly 10 may mean that the seat frame assembly 10 turns based on the position of the rotating device 400. The seat frame assembly 10 may include a center frame 300, a backrest frame 500, and a seat cushion frame 100. The backrest frame 500 and the seat cushion frame 100 may be coupled to the center frame 300. The rotating device 400 may be connected to a lower portion of the center frame 300. When the rotating device 400 is unlocked, the center frame 300 may be in a rotatable state.

[0049] The seat cushion frame 100 may be rotatably coupled to the center frame 300 to perform folding-up and folding-down functions using the center frame 300 as a rotation center. Unlike the above example, the backrest frame 500 and the center frame 300 may be integral, or the seat cushion frame 100 and the center frame 300 may be integral.

[0050] The rotating device 400 connects the seat frame assembly 10 to the floor of the vehicle and can rotate the seat frame assembly 10 connected to the vehicle floor. When rotating the seat frame assembly 10, considering the limited interior space of the vehicle, the seat frame assembly 10 can be rotated in the upward folded state of the seat cushion frame 100.

[0051] However, if the seat cushion frame 100 is arbitrarily changed to the folded-down state by gravity or an external force acting on the seat cushion frame 100 in the folded-up state, interference may occur between the seat cushion frame 100 and surrounding structures when the seat frame assembly 10 is rotated. When the seat frame assembly 10 is rotated, the seat cushion frame 100 may be maintained in the folded-up state.

[0052] The fixed frame assembly 200 can unlock the rotating device 400. When the seat frame assembly 10 is rotated by the rotating device 400, the fixed frame assembly 200 can prevent the seat cushion frame 100 from folding downward. Specifically, the fixed frame assembly 200 can maintain the seat cushion frame 100 in the upward folded state. However, if the rotating device 400 is unlocked and the seat frame assembly 10 is rotated by a specified angle or more, the seat cushion frame 100 may fold downward when an external force is applied to the seat cushion frame 100. While the rotating device 400 is locked or until the seat frame assembly 10 is not rotated by a specified angle or more with the rotating device 400 unlocked, the fixed frame assembly 200 can maintain the seat cushion frame 100 in the upward folded state.

[0053] Figure 3is a view showing a rotating device according to one embodiment of the present disclosure, Figure 4 is a view illustrating a rotating device located on a moving track according to one embodiment of the present disclosure.

[0054] Reference Figure 1 、 Figure 3 and Figure 4 The rotating device 400 may include a base plate 410 positioned on the vehicle floor 910 and a rotating plate 430 positioned on the base plate 410. Specifically, the base plate 410 may be coupled to the vehicle floor 910 or to a movable rail 930 provided on the floor 910. The rotating device 400 may be coupled to the movable rail 930, which can move the seat frame assembly 10 in the longitudinal direction or the width direction of the vehicle, thereby changing the rotational space of the seat frame assembly 10 within the interior space of the vehicle. The rotating plate 430 may be connected to the seat frame assembly 10 to rotate the seat frame assembly 10. Specifically, the rotating plate 430 may be coupled to the lower surface of the center frame 300 of the seat frame assembly 10. The rotating plate 430 can rotate the center frame 300, thereby rotating the entire seat frame assembly 10.

[0055] The rotating plate 430 may be connected to the fixed frame assembly 200 via a wire. The rotating device 400 may be unlocked by operating the fixed frame assembly 200. When an external force is applied to the seat frame assembly 10 in the unlocked state of the rotating device 400, the seat frame assembly 10 may be rotated.

[0056] Figure 5 is a view showing a fixing frame assembly according to one embodiment of the present disclosure, Figure 6 yes Figure 5 Exploded view of the mounting frame assembly.

[0057] Reference Figure 2 、 Figure 5 and Figure 6 The fixing frame assembly 200 can lock and unlock the rotating device 400 and the seat cushion frame 100. Locking the seat cushion frame 100 can mean fixing the seat cushion frame 100 so that the seat cushion frame 100 in the upward folded state does not fold downward. The fixing frame assembly 200 can be provided on a side surface of the seat frame assembly 10. The side surface of the seat frame assembly 10 can refer to both sides of the seat frame assembly 10 based on the direction in which the seat cushion frame 100 in the downward folded state extends.

[0058] The fixed frame assembly 200 may include a rotating rod 230 for locking or unlocking the rotating device 400; a hook 250 for locking or unlocking the seat cushion frame 100; and an elastic body 260 for applying an elastic force to the rotating rod 230. The rotating rod 230 and the hook 250 may be connected by a shaft 240. Thus, the rotating rod 230 and the hook 250 may rotate together. The hook 250 may be connected to one end of the shaft 240, and the rotating rod 230 may be connected to the other end of the shaft 240. The hook 250 may be located closer to the seat cushion frame 100 than the rotating rod 230. In other words, the hook 250 and the rotating rod 230 may be located sequentially on the side surface of the seat cushion frame 100.

[0059] The rotating lever 230 can rotate about an axis 240. The axis 240 can extend toward a side surface of the seat cushion frame 100. Specifically, the axis 240 can extend in a direction substantially perpendicular to the direction in which the seat cushion frame 100 extends when folded downward, and the rotating lever 230 can rotate about the axis in the direction in which the seat cushion frame 100 extends. For example, the rotating lever 230 can be fan-shaped. The rotating lever 230 can be connected to a wire 220. The wire 220 can connect the rotating device 400 to the rotating lever 230. When the rotating lever 230 rotates, the rotating lever 230 pulls the wire 220 to unlock the rotating device 400. Specifically, when the rotating lever 230 rotates toward the front of the seat frame assembly 10, the rotating lever 230 pulls the wire 220 to unlock the rotating device 400. The direction toward the front of the seat frame assembly 10 can indicate the direction in which the hook 250 rotates toward the fixing pin 190.

[0060] In order to unlock the rotating device 400, the rotating lever 230 may apply an external force to the rotating device 400. The rotating lever 230 may be rotated manually by a user, or automatically rotated by a separate motor through a user's operation.

[0061] The hook 250 can rotate together with the rotating rod 230 to fix the seat cushion frame 100. The hook 250 can rotate about the shaft 240. The fixing pin 190 can be provided on a side surface of the seat cushion frame 100. The fixing pin 190 can protrude from the side surface of the seat cushion frame 100 toward the outside of the seat cushion frame 100. The hook 250 can be engaged with the fixing pin 190 by rotating. When the hook 250 engages with the fixing pin 190 when the seat cushion frame 100 is folded upward, the seat cushion frame 100 can be prevented from folding downward. However, when the hook 250 is rotated when the seat cushion frame 100 is folded downward, the hook 250 may not engage with the fixing pin 190. In other words, the position of the fixing pin 190 can change when the seat cushion frame 100 is folded upward or downward.

[0062] The elastic body 260 may connect the seat cushion frame 100 and the rotating rod 230. The elastic body 260 may be a torsion spring that receives a torsional force about its central axis. One end of the elastic body 260 may be connected to the seat cushion frame 100, and the other end may be connected to the rotating rod 230. The central axis of the elastic body 260 may be located between the one and other ends. The central axis of the elastic body 260 may coincide with the direction in which the fixing pin 190 protrudes toward the outside of the seat cushion frame 100. In other words, the central axis of the elastic body 260 may coincide with the protruding direction of the fixing pin 190. One end of the elastic body 260 may be fixed to the seat cushion frame 100, and the other end may be connected to the rotating rod 230, allowing the position of the other end of the elastic body 260 to be variable. Therefore, the elastic body 260 can exert a force in a direction from one end to the other, and the direction of the force exerted by the elastic body 260 on the rotating rod 230 can vary depending on the position of the rotating rod 230. The elastic body 260 can apply force to the rotating rod 230 so that the rotating rod 230 in the stopped state after the movement is completed maintains its position. That is, the position of the elastic body 260 can change according to the rotation of the rotating rod 230.

[0063] Figure 7 and Figure 8 is a view illustrating a locked state of a seat cushion frame according to one embodiment of the present disclosure.

[0064] Reference Figure 2 、 Figure 7 and Figure 8 When the seat cushion frame 100 is folded upward, the rotating lever 230 is operated, thereby unlocking the rotating device 400. The rotating lever 230 can be operated so that the hook 250 can engage with the fixing pin 190. Since the hook 250 is engaged with the fixing pin 190, the seat cushion frame 100 can be prevented from folding downward. The elastic body 260 can apply a force to the rotating lever 230 in a direction opposite to the direction in which the hook 250 moves away from the fixing pin 190. When the hook 250 is engaged with the fixing pin 190, the elastic body 260 can apply a force to the rotating lever 230 in direction A. The state in which the hook 250 is engaged with the fixing pin 190 can be maintained by the force applied to the rotating lever 230 by the elastic body 260.

[0065] According to one embodiment of the present disclosure, if the rotating device 400 is unlocked in the upwardly folded state of the seat cushion frame 100, the upwardly folded state of the seat cushion frame 100 can be maintained by the hook 250 rotating together with the rotating lever 230, which is an element configured to unlock the rotating device 400. In addition, the force applied to the rotating lever 230 by the elastic body 260 can maintain the engaged state between the hook 250 and the fixing pin 190.

[0066] Figure 9 is a view illustrating an unlocked state of a seat cushion frame according to one embodiment of the present disclosure.

[0067] Reference Figure 2 and Figure 9 , the seat cushion frame 100 can be unlocked during the process of rotating the seat frame assembly. If the seat cushion frame 100 is rotated in the upwardly folded state, the hook 250 can be rotated from the state of being engaged with the fixing pin 190 to the state of being separated from the fixing pin 190. That is, if the rotating device 400 is unlocked and the seat frame assembly is rotated by a specified angle or more, the seat cushion frame 100 can be folded downward when an external force is applied to the seat cushion frame 100.

[0068] During the seat frame assembly rotation process, if the seat frame assembly rotates by a specified angle or more, the rotating device 400 pulls the wire 220. This causes the rotating rod 230 to rotate toward the rear of the seat frame assembly, allowing the hook 250 and the fixing pin 190 to separate from each other. Having completed its rotation, the rotating rod 230 receives a force from the elastic body 260 in the direction toward the rear of the seat frame assembly. The elastic body 260 applies a force to the rotating rod 230 in the direction B, i.e., in the direction in which the hook 250 moves away from the fixing pin 190. The force applied by the elastic body 260 allows the rotating rod 230 to maintain its current position. Once the hook 250 completes its rotation away from the fixing pin 190, the rotating device 400 is locked.

[0069] Figure 10 is a view showing one surface of a rotating device according to one embodiment of the present disclosure, Figure 11 is a view illustrating another surface of the rotating device according to one embodiment of the present disclosure.

[0070] Reference Figure 5 、 Figure 10 and Figure 11 The rotating device 400 may include a bottom plate 410 and a rotating plate 430. The rotating plate 430 may be disposed in an inner space formed by the bottom plate 410.

[0071] The bottom plate 410 may include a plurality of fixing grooves 411. The fixing grooves 411 may be spaced apart from each other. For example, four fixing grooves 411 may be provided. Each fixing groove 411 may be a recessed portion facing the outer surface of the bottom plate 410. In other words, the fixing groove 411 may be a recessed portion on the inner surface of the bottom plate 410. The inner surface of the bottom plate 410 may face the outer surface of the rotating plate 430.

[0072] The rotating plate 430 may include a rotating rod 431 connected to the wire 220, a locking pin 432 inserted into the fixing groove 411, an inner plate 433 accommodating the locking pin 432, and a lever rod 434 connected to the locking pin 432. The locking pin 432, the inner plate 433, the lever rod 434, and the rotating rod 431 may be arranged in sequence. The direction from the locking pin 432 toward the rotating rod 431 may be Figure 1 The direction from the rotating device 400 toward the seat frame assembly 10.

[0073] The rotating rod 431 and the pull rod 434 can be fixedly connected to each other. The angle formed by the length direction of the rotating rod 431 and the length direction of the pull rod 434 can be constant. One end of the rotating rod 431 can be connected to the wire 220, and the other end of the rotating rod 431 can be connected to the central shaft 436 of the rotating plate 430. The pull rod 434 can be formed with a hole for the central shaft 436 to pass through.

[0074] The pull rod 434 can be connected to the inner plate 433 via a spring 435. The spring 435 can be connected to both ends of the pull rod 434. The pull rod 434 can be connected to the paired locking pins 432. As the position of the pull rod 434 changes, the direction of the force applied by the spring 435 to the pull rod 434 can change. For example, the spring 435 can be a torsion spring.

[0075] The locking pin 432 can be positioned within a locking pin receiving slot 433a provided in the inner plate 433. For example, the locking pin 432 and the locking pin receiving slot 433a can be provided as a pair. The locking pin 432 can move within the locking pin receiving slot 433a. Each locking pin 432 can include one end 432a inserted into the fixing slot 411 and another end 432b opposite the one end 432a. When the rotating rod 230 pulls the wire 220, the rotating rod 431 and the pull rod 434 can rotate, causing one end of each locking pin 432 connected to the pull rod 434 to separate from the corresponding fixing slot 411. In other words, when the rotating device 400 is locked, one end 432a of each locking pin 432 can be inserted into one of the multiple fixing slots 411. For example, if the locking pins 432 are provided as a pair, the corresponding ends 432a of the pair of locking pins 432 can be inserted into two of the multiple fixing slots 411. The pair of locking pins 432 may be arranged parallel to each other, and the direction facing one end 432a of one locking pin 432 and the direction facing the other end 432b of the other locking pin 432 may coincide with each other. A central shaft 436 may be located in the space between the pair of locking pins 432 and may be connected to the inner plate 433. The inner plate 433 may be disc-shaped and rotatable within the base plate 410. The inner plate 433 may be rotated by an external force generated by rotational motion. In other words, the inner plate 433 may be connected to the seat frame assembly so as to rotate with the rotation of the seat frame assembly.

[0076] Figure 12 is a view for explaining the inner surface of a bottom plate according to one embodiment of the present disclosure.

[0077] Reference Figure 11 and Figure 12 The base plate 410 may include a plurality of fixing grooves 411 and a plurality of guide portions 412. The fixing grooves 411 may be recessed portions provided on the inner surface of the base plate 410. The guide portions 412 may be portions of the inner surface of the base plate 410 that protrude toward the inner plate 433. The fixing grooves 411 and the guide portions 412 may be formed at different heights in the direction from the rotating device 400 toward the seat frame assembly. For example, the fixing grooves 411 and the guide portions 412 may be provided in equal numbers, and four fixing grooves 411 and four guide portions 412 may be provided.

[0078] One end 432a of locking pin 432 can be inserted into one of fixing grooves 411, while the other end 432b of locking pin 432 can contact one of guide portions 412. One end 432a of locking pin 432 and the other end 432b of locking pin 432 can be arranged to be formed in layers with different heights. One end 432a of locking pin 432 and the other end 432b of locking pin 432 can be formed in a stepped shape to match the fixing groove 411 and guide portion 412 formed at different heights. In other words, the heights of one end 432a of locking pin 432 and the other end 432b of locking pin 432 can differ from each other based on a surface of locking pin 432 facing in a direction from rotating device 400 toward the seat frame assembly.

[0079] Figure 13 is a view showing an upwardly folded state of a seat cushion frame according to one embodiment of the present disclosure, Figure 14 and Figure 15 is a view illustrating an unlocked state of a rotating device according to one embodiment of the present disclosure.

[0080] Reference Figure 8 and Figures 13 to 15 When the rotating lever 230 pulls the wire 220 while the seat cushion frame 100 is folded upward, the rotating device 400 can be unlocked. Specifically, when the wire 220 is pulled by the rotating lever 230, the rotating lever 431 rotates. Through the rotation of the rotating lever 431 and the pull rod 434, the locking pin 432 can be separated from the fixed slot 411. At this time, the two ends 432a of the pair of locking pins 432 can be separated from the fixed slot 411. With the locking pins 432 separated from the fixed slot 411, the seat frame assembly 10 can be rotatable. The spring 435 can apply a force in the direction of rotation of the pull rod 434, thereby maintaining the locking pin 432 separated from the fixed slot 411. For example, the directions of the forces applied by the two springs 435 to one end and the other end of the pull rod 434 can be parallel to each other.

[0081] Figure 16 1 is a view showing the rotation of a seat frame assembly according to one embodiment of the present disclosure. Figure 10 、 Figure 11 and Figure 16 , seat frame assembly 10 can rotate while rotating device 400 is unlocked. When an external force is applied to seat frame assembly 10 to cause rotational movement, inner plate 433 connected to seat frame assembly 10 can rotate. Because spring 435 applies a force in the direction of rotation of tie rod 434, locking pin 432 remains separated from fixing slot 411, allowing inner plate 433, locking pin 432, rotating rod 431, and tie rod 434 to rotate together.

[0082] Figure 17 and Figure 18 is a view illustrating a process of rotating a rotating device according to one embodiment of the present disclosure.

[0083] Reference Figure 5 and Figures 16 to 18 When the other end 432b of each locking pin 432 contacts one of the guide portions 412, the locking pin 432 can move toward the inner surface of the base plate 410. As the locking pin 432 moves toward the exterior of the inner plate 433, the rotating lever 431 and the pull rod 434 connected to the locking pin 432 can rotate to pull the wire 220. As the rotating lever 431 pulls the wire 220, the rotating lever 230 can rotate toward the rear of the seat frame assembly 10, and the hook 250 and the fixing pin 190 can separate from each other. When the hook 250 and the fixing pin 190 are no longer in contact with each other, the lock of the seat cushion frame 100 is released, allowing the seat cushion frame 100 to fold downward.

[0084] However, even if the inner plate 433 is rotated by an external force, the rotating lever 431 can still rotate together with the inner plate 433 until the other end 432b of each locking pin 432 contacts one of the guide portions 412 after the one end 432a of each locking pin 432 is separated from the fixing groove 411. Therefore, the rotating lever 431 may not pull the wire 220. Therefore, until the other end 432b of each locking pin 432 contacts one of the guide portions 412 after the one end 432a of each locking pin 432 is separated from the fixing groove 411, the connection between the hook 250 and the fixing pin 190 can be maintained.

[0085] As the inner plate 433 rotates due to rotation of the seat frame assembly 10, the other end 432a of the locking pin 432 may contact the guide portion 412. As the inner plate 433 continues to rotate while the other end 432a of the locking pin 432 is in contact with the guide portion 412, the locking pin 432 may move toward the outside of the inner plate 433. That is, during rotation of the seat frame assembly 110, the rotating lever 230 may begin to rotate at the point where the other end 432a of the locking pin 432 contacts the guide portion 412, thereby eliminating contact between the hook 250 and the fixing pin 190. While the seat cushion frame 10 begins to rotate, the seat cushion frame 100 remains locked. However, when the seat frame assembly 10 rotates to a specified angle, the seat cushion frame 100 may be unlocked.

[0086] Figure 19 and Figure 20 is a view illustrating a state in which the rotation of the rotating device is completed according to one embodiment of the present disclosure.

[0087] Reference Figure 9 、 Figure 19 and Figure 20If one end 432a of each locking pin 432 is reinserted into one of the fixing slots 411, the rotation of the seat frame assembly 10 is completed. While one end 432a of the locking pin 432 is inserted into the fixing slot 411, the rotating rod 431 and the pull rod 434 connected to the locking pin 432 can rotate to fully pull the wire 220. As a result, the rotating rod 230 can rotate toward the rear of the seat frame assembly 10. After the rotation of the rotating rod 230 is completed, the elastic body 260 can apply a force to the rotating rod 230, allowing the rotating rod 230 to maintain its current position. The spring 435 can also apply a force to the pull rod 434, allowing the locking pin 432 to remain inserted into the fixing slot 411.

[0088] As apparent from the above description, according to one embodiment of the present disclosure, if the rotating device is unlocked in a state where the seat cushion frame is folded upward, the folded-up state of the seat cushion frame can be maintained by a hook that rotates together with a rotating lever configured to unlock the rotating device. In addition, the engagement between the hook and the fixing pin connected to the seat cushion frame can be maintained by the force applied to the rotating lever by an elastic body.

[0089] According to one embodiment of the present disclosure, a rotating rod configured to unlock the rotating device can be connected to the seat cushion frame through an elastic body, and the elastic body can apply force to the rotating rod to maintain the current state of the rotating rod, thereby maintaining the locked state and unlocked state of the rotating device.

[0090] The present disclosure has been described in detail with reference to preferred embodiments. However, it will be appreciated by those skilled in the art that changes may be made to 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.

Claims

1. A vehicle seat, comprising: a seat frame assembly including a seat cushion frame that can be folded upward and downward; a rotating device for rotating the seat frame assembly; A rotating lever to unlock the rotating device; as well as A hook rotates together with the rotating rod to fix the seat cushion frame.

2. The vehicle seat according to claim 1, further comprising a fixing pin protruding toward an outer side of the seat cushion frame, in, The hook is engaged with the fixing pin by rotation.

3. The vehicle seat according to claim 2, wherein When the seat cushion frame is in an upwardly folded state and the rotating device is unlocked by the rotating lever, the hook engages with the fixing pin to prevent the seat cushion frame from being folded downward. 4 . The vehicle seat according to claim 3 , further comprising a shaft connecting the hook and the rotating rod.

5. The vehicle seat according to claim 3, further comprising an elastic body connecting the rotating rod and the seat cushion frame, in, The elastic body applies a force to the rotating lever so that the hook maintains a state of being engaged with the fixing pin.

6. The vehicle seat according to claim 2, further comprising an elastic body connecting the rotation rod and the seat cushion frame, in, When the seat cushion frame is in the upwardly folded state and the rotating device is in a locked state with no external force applied thereto, the elastic body applies force to the rotating lever so that the hook moves away from the fixing pin.

7. The vehicle seat according to claim 2, wherein: When the seat frame assembly is rotated in the folded-up state of the seat cushion frame, the hook rotates away from the fixing pin.

8. The vehicle seat according to claim 7, further comprising an elastic body connecting the rotating rod and the seat cushion frame, in, In a state where the hook is completely rotated away from the fixing pin, the elastic body applies a force to the rotating rod, so that the hook moves away from the fixing pin.

9. The vehicle seat according to claim 7, wherein: The rotating device comprises: a bottom plate coupled to a floor of the vehicle or to a moving rail provided on the floor of the vehicle, the bottom plate including a fixing groove; and a rotating plate disposed on the bottom plate and coupled to the seat frame assembly to allow the seat frame assembly to rotate based on an external force, Wherein, the rotating rod is connected to the rotating plate of the rotating device through a wire.

10. The vehicle seat according to claim 9, wherein The rotating plate comprises: a rotating rod connected to the line; an inner panel including a locking pin receiving groove that receives a locking pin such that the locking pin is movable therein; and The locking pin moves together with the rotating rod and moves in the locking pin receiving groove in the direction of inserting into the fixing groove, When the wire is pulled by the rotating lever, the rotating lever rotates, and the locking pin is separated from the fixing groove by the rotation of the rotating lever, so that the seat frame assembly becomes rotatable.

11. The vehicle seat according to claim 10, wherein The fixing groove of the bottom plate is provided as a recessed portion on the inner surface of the bottom plate, and a plurality of guide portions protruding toward the inner plate are formed on the inner surface of the bottom plate, and The fixing groove and the guide portion are formed at different heights in a direction from the rotating device toward the seat frame assembly.

12. The vehicle seat according to claim 11, wherein One end of each locking pin is inserted into one of the fixing grooves, and the remaining end of each locking pin contacts one of the guide portions during the rotation process of the seat frame assembly. One end and the remaining end of each of the fixing pins are formed at different heights in a stepped manner.

13. The vehicle seat according to claim 12, wherein: One end of each of the locking pins is separated from one of the fixing grooves by the rotation of the rotating rod, and the remaining end of each of the locking pins contacts one of the guide portions during the rotation process of the seat frame assembly, and When the remaining end of each locking pin contacts one of the guide portions, one end of each locking pin moves toward the outside of the inner panel, so that the wire is pulled by the rotating lever.

14. The vehicle seat according to claim 13, wherein: The wire is pulled by the rotating rod, so that the hook moves away from the fixing pin and the seat cushion frame can be folded downward.

15. The vehicle seat according to claim 1, wherein The seat frame assembly further includes a center frame and a back frame, the back frame and the seat cushion frame being coupled to the center frame, and The center frame and the rotating device are connected such that when the rotating device is unlocked, the center frame becomes rotatable.

16. The vehicle seat according to claim 1, further comprising a fixing pin protruding toward an outer side of the seat cushion frame, in, When the seat cushion frame is rotated in an upwardly folded state of the seat cushion frame, the hook is rotated from a state engaged with the fixing pin to a state spaced apart from the fixing pin.

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