Reclining seat and folding seat

Abstract

The application discloses a turnover seat frame, which comprises a bottom frame and a seat cushion support, the bottom frame is arranged in a transverse direction, the seat cushion support is connected with the bottom frame and is used for mounting a seat cushion, the turnover seat frame further comprises a fixing frame, a first connecting rod and a movable connecting rod set, the fixing frame is fixedly connected with the bottom frame, the movable connecting rod set and two ends of the first connecting rod are rotatably connected with the seat cushion support and the fixing frame respectively, the turnover seat frame comprises at least an initial state and a first forward stretching state, and the movable connecting rod set comprises at least a retracted state and an extended state; in the initial state, the seat cushion support is arranged in the transverse direction and is located above the bottom frame, the first connecting rod and the movable connecting rod set are folded between the seat cushion support and the fixing frame, and the movable connecting rod set is in the retracted state; in the first forward stretching state, the first connecting rod and the movable connecting rod set drive the seat cushion support to turn over forward, the movable connecting rod set is in the extended state, and the seat cushion support is moved to the front side of the bottom frame and the fixing frame and is arranged in the transverse direction. The application further discloses a folding seat.

Description

Technical Field

[0001] This invention relates to the technical field of seating, and more particularly to a flip-up seat frame and a folding seat. Background Technology

[0002] To meet diverse user needs, the vehicle seats need to be adaptable to different configurations: unfolded for normal use and folded down for other functions. Existing vehicle seats use the following methods to achieve this folding mechanism:

[0003] 1. The seat can be folded completely flat, but this sacrifices the seat cushion or backrest side wings, affecting the seat's support and comfort;

[0004] 2. The seat provides good support, but the headrest needs to be removed first, which is a complicated process;

[0005] 3. Some seats use a four-link linkage to keep the seat cushion facing upwards, but this affects the forward movement of the seat cushion and prevents the seat cushion from completely avoiding contact with the backrest.

[0006] Therefore, it is necessary to design a flip-up seat and folding seat that is easy to operate and does not affect the comfort of the seat, while allowing the seat cushion and backrest to completely avoid each other. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a flip seat and folding seat that are easy to operate and do not affect the comfort of the seat, while achieving complete avoidance of the seat cushion and backrest.

[0008] The present invention provides a flip-up seat frame, including a base frame and a seat cushion support. The base frame is arranged laterally, and the seat cushion support is connected to the base frame and used to install a seat cushion. The flip-up seat frame also includes a fixed frame, a first connecting rod, and a movable connecting rod assembly. The fixed frame is fixedly connected to the base frame, and the two ends of the movable connecting rod assembly and the first connecting rod are rotatably connected to the seat cushion support and the fixed frame, respectively. The flip-up seat frame includes at least an initial state and a first extended state, and the movable connecting rod assembly includes at least a retracted state and an extended state.

[0009] In the initial state, the seat cushion support is arranged laterally and located above the base frame, the first connecting rod and the movable connecting rod assembly are folded between the seat cushion support and the fixed frame, and the movable connecting rod assembly is in the retracted state;

[0010] In the first extended state, the first connecting rod and the movable connecting rod group drive the seat cushion bracket to flip forward, the movable connecting rod group is in the extended state, and the seat cushion bracket moves to the front of the base frame and the fixed frame and is arranged laterally.

[0011] Furthermore, the movable linkage assembly includes a second linkage, a third linkage, and a fourth linkage. One end of the second linkage is rotatably connected to the seat cushion support, and the other end is rotatably connected to one end of the third linkage. The other end of the third linkage is rotatably connected to the fixed frame. A sliding groove is provided on the second linkage. A slider is provided at one end of the fourth linkage, and the slider can slide along the sliding groove. The other end of the fourth linkage is coaxial with and rotatably connected to the other end of the third linkage.

[0012] In the contracted state, the slider is located at the first end of the groove, and the second connecting rod, the third connecting rod, and the fourth connecting rod form a triangle;

[0013] In the extended state, the slider slides along the groove, and the second connecting rod and the third connecting rod move relative to each other to the first position.

[0014] Furthermore, it also includes a torsion spring, which is installed between the third link and the fixed frame;

[0015] In the contracted state, the torsion spring keeps the slider at the beginning of the groove;

[0016] In the extended state, the torsion spring drives the third link to rotate toward the direction of the fourth link, and the slider slides along the groove.

[0017] Furthermore, it also includes a first motor, which is mounted on the fixed frame and is used to drive the first connecting rod to rotate. When the first connecting rod rotates, it can drive the seat cushion support to rotate.

[0018] Furthermore, it also includes a second motor, which is connected to the third link and is used to drive the third link to rotate.

[0019] Furthermore, it also includes a pull cord and a seat support lock. The seat support lock is installed on the seat support, and the pull cord is connected to the seat support lock. When the pull cord is pulled, the pull cord causes the seat support lock to unlock the seat support. When the pull cord is pulled further, the pull cord causes the seat support to flip upward and forward from the initial state.

[0020] Furthermore, the flip-up seat also includes a vertically folded state, the seat cushion support is arranged vertically and located in front of the base frame and the fixed frame, and the movable linkage assembly is in a retracted state.

[0021] The present invention also provides a folding chair, including a backrest, a seat cushion and a backrest support, wherein the backrest is mounted on the backrest support, and further includes the flip seat frame described in any of the above claims, wherein the backrest support is rotatably connected to the base frame;

[0022] In the initial state, the backrest support is flipped upward relative to the base frame to the unfolded position;

[0023] In the first extended position, the backrest bracket flips forward and downward toward the base frame, and the backrest is located above the base frame and in a horizontal direction.

[0024] Furthermore, the backrest includes a headrest, which is positioned above the seat cushion in the first extended state.

[0025] Furthermore, the flip-up seat also includes a vertically folded state, the seat cushion support is arranged vertically and located in front of the base frame and the fixed frame, the movable linkage is in a retracted state, and the headrest is removed.

[0026] The above technical solution has the following beneficial effects:

[0027] In this invention, the seat frame can be flipped so that the seat cushion can be flipped forward completely past the base frame, freeing up the space above the base frame. The backrest can be flipped down to the top of the base frame and horizontally, achieving complete avoidance between the backrest and the seat cushion. Therefore, the backrest and seat cushion do not need to sacrifice the side wings, ensuring the comfort of the seat cushion and backrest under normal use. When the backrest is flipped down and folded, the headrest does not need to be removed, making the folding operation of the seat more convenient. Attached Figure Description

[0028] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0029] Figure 1 This is a perspective view of a folding seat in normal use according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of a folding seat in normal use according to an embodiment of the present invention;

[0031] Figure 3 This is a perspective view of the initial state of the flip-up seat frame in one embodiment of the present invention;

[0032] Figure 4 This is a side view of the initial state of the flip-up seat in one embodiment of the present invention;

[0033] Figure 5 This is a critical state diagram of the torsion spring of the flip seat frame in one embodiment of the present invention;

[0034] Figure 6 It corresponds Figure 5A diagram of a folding seat;

[0035] Figure 7 This is an extended state diagram of the movable linkage assembly of the flip-up seat frame in one embodiment of the present invention;

[0036] Figure 8 It corresponds Figure 7 A diagram of a folding seat;

[0037] Figure 9 This is an intermediate state diagram of the flip-up seat frame in one embodiment of the present invention;

[0038] Figure 10 It corresponds Figure 9 A diagram of a folding seat;

[0039] Figure 11 This is a diagram of the first forward extension state of the flip seat frame in one embodiment of the present invention;

[0040] Figure 12 It corresponds Figure 11 A diagram of a folding seat;

[0041] Figure 13 This is a diagram showing the vertical folded state of the flip-up seat frame in one embodiment of the present invention;

[0042] Figure 14 It corresponds Figure 13 A diagram of a folding seat;

[0043] Figure 15 This is a magnified view of the torsion spring in the initial state of the flipped seat;

[0044] Figure 16 This is a magnified view of a torsion spring in a critical state.

[0045] Figure 17 This is a magnified view of the torsion spring in the vertically folded state of the flip seat frame;

[0046] Figure 18 This is a magnified view of a portion of the seat cushion support locking mechanism;

[0047] Figure 19 This is a magnified view of a portion of the front lock;

[0048] Figure 20 This is a schematic diagram of a first motor being installed in another embodiment of the present invention;

[0049] Figure 21 This is a schematic diagram of a first motor and a second motor provided in another embodiment of the present invention;

[0050] Figure 22 This is a schematic diagram of a first motor and an electric push rod in another embodiment of the present invention.

[0051] Reference table for attached figures:

[0052] Base frame 1, support legs 2, torsion spring 7, first motor 8, second motor 9, seat cushion 10, slide rail 11, rear lock 12, front lock 13, pull rope 14, locking pin 131, buckle 132, backrest bracket 30;

[0053] Seat cushion support 3: U-shaped rod 31, reinforcing rod 32;

[0054] Mounting bracket 4: Mounting shaft 41;

[0055] First connecting rod 5: First gear 51;

[0056] Movable linkage group 6: second link 61, third link 62, fourth link 63, slide 611, slider 631;

[0057] Backrest 20: Headrest 201. Detailed Implementation

[0058] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0059] It is readily understood that, based on the technical solution of this invention, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of the invention.

[0060] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. In this invention, "front" and "back" are based on the orientation of the seat.

[0061] In some embodiments of the present invention, such as Figure 1-3 As shown, the flip-up seat frame includes a base frame 1 and a seat cushion support 3. The base frame 1 is arranged laterally, and the seat cushion support 3 is connected to the base frame 1 and used to install the seat cushion 10. The flip-up seat frame also includes a fixed frame 4, a first connecting rod 5, and a movable connecting rod assembly 6. The fixed frame 4 is fixedly connected to the base frame 1, and the two ends of the movable connecting rod assembly 6 and the first connecting rod 5 are rotatably connected to the seat cushion support 3 and the fixed frame 4, respectively. The flip-up seat frame includes at least an initial state and a first extended state, and the movable connecting rod assembly 6 includes at least a retracted state and an extended state.

[0062] In the initial state, the seat cushion support 3 is arranged laterally and located above the base frame 1. The first connecting rod 5 and the movable connecting rod group 6 are folded between the seat cushion support 3 and the fixed frame 4, and the movable connecting rod group 6 is in a retracted state.

[0063] In the first extended state, the first link 5 and the movable link group 6 drive the seat cushion support 3 to flip forward. The movable link group 6 is in the extended state, and the seat cushion support 3 moves to the front of the base frame 1 and the fixed frame 4 and is arranged in the lateral direction.

[0064] Specifically, such as Figure 2 As shown, the base frame 1 is arranged laterally, and the bottom of the base frame 1 is connected to the support legs 2. The support legs 2 can be fixedly connected to the vehicle interior floor, or slidably connected to the slide rail 11 installed on the vehicle interior floor. The base frame 1 is fixedly connected to the support legs 2, and the base frame 1 is used to support the structure above and cannot be rotated.

[0065] like Figure 1 As shown, the initial state of the flip seat frame is the normal use state of the seat. At this time, the seat cushion 10 is arranged horizontally and the backrest 20 is arranged vertically.

[0066] like Figure 2 As shown, in the initial state, the seat cushion support 3 is located above the base frame 1 and is arranged laterally. The seat cushion 10 is mounted on the seat cushion support 3. The seat cushion support 3 supports and mounts the seat cushion 10. When the seat cushion support 3 is flipped, it can cause the seat cushion 10 to flip as well. Figure 3 As shown, the seat cushion support 3 includes a U-shaped rod 31 and a reinforcing rod 32.

[0067] like Figure 2 As shown, the fixing bracket 4 is fixedly connected to the front end of the base frame 1 (i.e., Figure 2 (Left side). For example Figure 3 As shown, the mounting bracket 4 includes a mounting shaft 41, which is fixedly connected to the base frame 1. The rest of the mounting bracket 4 extends forward toward the front end of the base frame 1.

[0068] like Figure 3 As shown, the two ends of the first connecting rod 5 are rotatably connected to the seat cushion bracket 3 and the fixed frame 4, respectively. The first connecting rod 5 is a single rod structure. When the first connecting rod 5 rotates relative to the fixed frame 4, it can drive the seat cushion bracket 3 to rotate together.

[0069] like Figure 3 As shown, the movable linkage assembly 6 is also installed between the seat cushion bracket 3 and the fixed frame 4. The movable linkage assembly 6 includes a retracted state and an extended state.

[0070] like Figure 4As shown, the movable linkage group 6 is in the retracted state at this time, and its overall length is at its shortest. When the movable linkage group 6 is in the retracted state, the forward movement of the seat cushion support 3 is small when it flips forward, and the seat cushion support 3 cannot completely pass over the base frame 1 and the fixed frame 4.

[0071] like Figure 11 As shown, the movable linkage 6 is in its extended state at this time, and its overall length is at its maximum. This allows the seat support 3 to flip forward to its maximum travel. Figure 11 The center-flipping seat frame is now in its first extended position, and the seat cushion support 3 has moved to the front of the base frame 1 and the fixing frame 4 and is arranged laterally. For example... Figure 12 As shown, at this time, the seat cushion bracket 3 can move the seat cushion 10 to the front of the base frame 1 and place it on the floor inside the vehicle, completely freeing up the space above the base frame 1. The backrest 20 can be flipped forward and downward to the space above the base frame 1, so that the backrest 20 can be completely flattened, and the seat cushion 10 will not interfere with the backrest 20.

[0072] In this embodiment, by flipping the seat frame, the seat cushion 10 can be driven to flip forward completely past the base frame 1, so that the seat cushion 10 gives up the space above the base frame 1. The backrest 20 can be flipped down to the top of the base frame 1, and the back of the backrest 20 is horizontal, so that the backrest 20 and the seat cushion 10 can completely avoid each other. Therefore, the backrest 20 and the seat cushion 10 do not need to sacrifice the side wings, ensuring the comfort of the seat cushion 10 and the backrest 20 under normal use. When the backrest 20 is flipped down and folded, the headrest 201 does not need to be removed, making the folding operation of the seat more convenient.

[0073] Furthermore, such as Figure 4 As shown, the movable linkage group 6 includes a second linkage 61, a third linkage 62, and a fourth linkage 63. One end of the second linkage 61 is rotatably connected to the seat cushion bracket 3, and the other end is rotatably connected to one end of the third linkage 62. The other end of the third linkage 62 is rotatably connected to the fixed frame 4. A sliding groove 611 is provided on the second linkage 61. A slider 631 is provided at one end of the fourth linkage 63. The slider 631 can slide along the sliding groove 611. The other end of the fourth linkage 63 is coaxial with the other end of the third linkage 62 and is rotatably connected.

[0074] In the retracted state, the slider 631 is located at the beginning of the groove 611, and the second link 61, the third link 62 and the fourth link 63 form a triangle;

[0075] In the extended state, the slider 631 slides along the groove 611, and the second link 61 and the third link 62 move relative to each other to the first position.

[0076] Specifically, the movable linkage group 6 includes three rods. In the retracted state, the three rods remain relatively stationary, and the slider 631 remains at the beginning of the slide groove 611.

[0077] like Figure 5 As shown, when the seat cushion support 3 is driven to flip upward and forward, the forward flipping stroke of the seat cushion support 3 is small and cannot completely pass over the fixed frame 4 and the base frame 1.

[0078] like Figure 7 As shown, the movable linkage 6 switches to the extended state, and the slider 631 slides along the slide groove 611 toward the end of the slide groove 611, so that the second link 61 and the third link 63 move relative to each other to the first position, that is, the overall length of the movable linkage 6 is at its maximum. This allows the seat cushion support 3 to flip forward to a greater range of motion.

[0079] like Figure 11 As shown, the seat support 3 eventually flips forward to the position furthest from the base frame 1, which can completely free up the space above the base frame 1.

[0080] Furthermore, such as Figure 15-16 As shown, it also includes a torsion spring 7, which is installed between the third link 62 and the fixed frame 4;

[0081] In the retracted state, the torsion spring 7 keeps the slider 631 at the beginning of the groove 611;

[0082] In the extended state, the torsion spring 7 drives the third link 62 to rotate toward the direction of the fourth link 63, and the slider 631 slides along the groove 611.

[0083] Specifically, such as Figure 15 As shown, one end of the torsion spring 7 is connected to the fixed frame 4, and the other end is connected to the third link 62. Figure 15 At this time, the movable link assembly 6 is in a retracted state, and the torsion spring 7 is in a compressed state. The torsion spring 7 provides a reaction force to the third link 62, so that the slider 631 is held at the beginning of the slide groove 611, and the movable link assembly 6 maintains the triangular frame structure.

[0084] like Figure 16 As shown, when the movable linkage group 6 rotates to a certain angle, the torsion spring 7 begins to rebound. The torsion spring 7 provides assistance to the third link 62, causing the third link 62 to rotate in the opposite direction. The third link 62 drives the slider 631 of the fourth link 63 to slide along the slide groove 611, so that the movable linkage group 6 switches to the extended state.

[0085] Under the action of torsion spring 7, the flip seat changes as follows:

[0086] like Figure 4 As shown, the flip seat is in the initial state, the movable linkage 6 is in the retracted state, at which time the torsion spring 7 is compressed, and the torsion spring 7 provides a reaction force to keep the slider 631 at the beginning of the slide groove 611.

[0087] like Figure 5 As shown, when the seat cushion support 3 is driven to flip upward and forward, the movable linkage group 6 remains in the retracted state, and the movable linkage group 6 moves along... Figure 5 After being rotated counterclockwise to a certain angle, the torsion spring 7 is in a critical state. The torsion spring 7 changes from being compressed to being open, switching from providing reaction force to providing assistance. For example... Figure 6 As shown, the seat surface of the seat cushion 10 is tilted forward and downward at this time.

[0088] like Figure 7 As shown, the torsion spring 7 causes the slider 631 to slide along the slide groove 611, and the movable linkage 6 switches to the extended state. At this time, the torsion spring 7 pushes the third linkage 62 along... Figure 7 Rotating clockwise, the second link 61 pushes the seat cushion support 3 upward and backward. Figure 8 As shown, the seat cushion 10 is raised and the seat surface is tilted backward.

[0089] like Figure 9 As shown, the seat support 3 continues to move forward, while the movable linkage 6 remains extended. The movable linkage 6 and the first linkage 5 move along... Figure 9 It continues to rotate counterclockwise. For example... Figure 10 As shown, the seat cushion 10 has extended beyond the base frame 1, and the seat surface of the seat cushion 10 is facing upwards.

[0090] like Figure 11 As shown, the seat cushion support 3 is pushed downwards, and continues to move forward, getting closer to the vehicle floor. The movable linkage 6 remains extended, at which point the flip seat frame is in its first extended position. Figure 12 As shown, the seat cushion 10 extends completely over the base frame 1 and the fixing frame 4, and is in contact with or close to the vehicle floor.

[0091] Furthermore, such as Figure 18-19 As shown, it also includes a pull cord 14 and a seat cushion bracket lock. When the flipped seat is in the initial state, the seat cushion bracket lock locks the seat cushion bracket 3 to prevent the seat cushion bracket 3 from accidentally flipping or moving during use of the seat.

[0092] The seat support locking mechanism includes a front lock 13 and a rear lock 12:

[0093] like Figure 18 As shown, the rear lock 12 is installed on the U-shaped rod 31 of the seat cushion bracket 3. The pull rope 14 is connected to the rear lock 12. When the pull rope 14 is pulled, the pull rope 14 drives the rear lock to unlock the seat cushion bracket 3 through a pull cable (not shown). When the pull rope 14 is pulled further, the pull rope 14 drives the seat cushion bracket 3 to flip upward and forward from the initial state.

[0094] like Figure 19As shown, the front lock 13 includes a locking pin 131 and a locking buckle 132. The locking pin 131 is fixed to the reinforcing rod 32 of the seat cushion bracket 3, and the locking buckle 132 is mounted on the base frame 1. A spring (not shown) is provided below the locking buckle 132. The locking buckle 132 is bird-shaped. When locked, the head of the locking buckle 132 locks with the locking pin 131, and the tail of the locking buckle 132 is pushed upward by the spring to lock the head with the locking pin 131. The tail of the locking buckle 132 is connected to the pull rope 14 via a pull cable (not shown). When the pull rope 14 is pulled, the tail of the locking buckle 132 moves along... Figure 19 Rotating clockwise causes the head to tilt upwards and separate from the locking pin 131, unlocking the seat support 3. At this time, the spring is compressed. When the seat support 3 returns to its initial state, the locking pin 131 first contacts the head of the latch 132 and slides down the curved surface of the bird's head into the beak of the latch 132 to lock. At the same time, the rear lock 12 also locks, and the seat support 1 is fixed.

[0095] When the pull cord 14 is pulled, the front lock 13 and the rear lock 12 can be unlocked simultaneously. When the seat support 1 returns to its initial state, the front lock 13 and the rear lock 12 can lock the seat support 1 simultaneously.

[0096] Optionally, a pull cord may not be provided, such as Figure 20 As shown, the first motor 8 is used to drive the first link 5 to rotate. The first motor 8 is mounted on the fixed frame 4 and is used to drive the first link 5 to rotate. When the first link 5 rotates, it can drive the seat cushion support 3 to rotate.

[0097] Specifically, the first link 5 is equipped with a first gear 51, and the first motor 8 drives the first gear 51 to rotate, thereby driving the first link 5 to rotate, and the first link 5 drives the seat cushion support 3 to rotate.

[0098] Optionally, some embodiments of the present invention may include a first motor 8 and a torsion spring 7, wherein the first motor 8 drives the first connecting rod 5, and the torsion spring 7 is installed between the third connecting rod 62 and the fixed frame 4 to realize the state switching of the movable connecting rod group 6.

[0099] Optionally, such as Figure 22 In some other embodiments of the present invention, a first motor 8 is included, and a third link 62 is configured as an electric push rod. The first motor 8 drives the first link 5, and the electric push rod realizes the state switching of the movable link group 6.

[0100] Optionally, such as Figure 21 As shown, the torsion spring 7 and the pull rope can also be omitted. The first motor 8 drives the first link 5, and the second motor 9 switches the state of the movable link group 6. The second motor 9 is connected to the third link 62 and is used to drive the third link 62 to rotate.

[0101] The process by which the first motor 8 and the second motor 9 drive the tilting seat to switch from the initial state to the first extended state is as follows:

[0102] like Figure 4 As shown, the flip seat is in its initial state, at which time the first motor 8 drives the first connecting rod 5 along... Figure 4 The first link 5 rotates counterclockwise, causing the seat support 3 and the movable link assembly 6 to rotate upwards counterclockwise together. At this time, the second motor 9 is in the locked state, keeping the movable link assembly 6 in the retracted state.

[0103] like Figure 5 As shown, after the first motor 8 rotates the first connecting rod 5 counterclockwise to this angle (approximately 70 degrees or other angles), the first motor 8 locks. The second motor 9 then starts driving the third connecting rod 62 along... Figure 5 Rotate clockwise.

[0104] like Figure 7 As shown, the first motor 8 remains locked, and the second motor 9 rotates the third link 62 clockwise, causing the slider 631 to slide along the groove 611, pushing the seat support 3 upward. When the movable link assembly 6 is in the extended state, the second motor 9 locks, keeping the movable link assembly 6 in the extended state.

[0105] like Figure 9 As shown, the second motor 9 is locked, and the first motor 8 drives the first connecting rod 5 along... Figure 9 When rotated counterclockwise, the first link 5 causes the seat cushion support 3 and the movable link group 6 to rotate counterclockwise together.

[0106] like Figure 11 As shown, the second motor 9 remains locked, and the first motor 8 drives the first connecting rod 5 to continue rotating counterclockwise until the seat support 3 moves to the foremost position, and the flip seat is in the first forward extension state.

[0107] When the flip seat switches from the first extended state to the initial state, the control process of the first motor 8 and the second motor 9 is the reverse of the above process.

[0108] Optionally, the second motor 9 can operate synchronously before the first motor 8 is locked. For example, when the first link 5 is rotated counterclockwise to that angle (approximately 70 degrees or other angles), the second motor 9 starts operating, driving the third link 62 to rotate clockwise. When the first motor 8 is locked, the second motor 9 also locks, which can shorten the switching time of the flip seat.

[0109] Furthermore, such as Figure 13 As shown, the flip seat also includes a vertically folded state, with the seat cushion support 3 arranged vertically and located in front of the base frame 1 and the fixed frame 4, and the movable linkage group 6 in a retracted state.

[0110] like Figure 14 As shown, when it is necessary to reduce the space occupied by folding seats in the vehicle interior, and when there is no second motor, the seat cushion 10 can be manually moved from the folding position. Figure 11 The state is flipped to Figure 13 The seat cushion support 3 is in a vertically folded state. When a second motor 9 is provided, the second motor 9 can drive the switch to the vertically folded state. At this time, the seat cushion support 3 is arranged roughly vertically and is located in front of the base frame 1 and the fixing frame 4. The seat cushion support 3 pushes the first connecting rod 5 to rotate clockwise, and at the same time pushes the movable connecting rod group 6 to switch to the retracted state, or nearly fully retracted state, to reduce the forward extension stroke of the seat cushion support 3, thus occupying less interior space.

[0111] At this time, the support leg 2 can slide forward along the slide rail 11 to its foremost position, making room for more rear passengers. In another embodiment of the present invention, such as Figure 1-2 As shown, the folding chair includes a backrest 20, a seat cushion 10, and a backrest support 30. The backrest 20 is mounted on the backrest support 30, and it also includes a flip seat frame in any of the above embodiments. The backrest support 30 is rotatably connected to the base frame 1.

[0112] In the initial state, the backrest support 30 is flipped upward relative to the base frame 1 to the unfolded position;

[0113] In the first extended position, the backrest support 30 flips forward and downward toward the base frame 1, and the backrest 20 is located above the base frame 1 and docks with the seat cushion 10.

[0114] Specifically, such as Figure 1-2 As shown, the folding seat is in the unfolded position and can be used normally for passenger seating. The backrest bracket 30 can be rotated and adjusted relative to the base frame 1, allowing the backrest 20 to be adjusted to a suitable usage angle.

[0115] like Figure 12 As shown, when the flip seat is in the first extended position, it frees up space above the base frame 1. At this time, the backrest support 30 can flip forward and downward toward the base frame 1, so that the backrest 20 is above the base frame 1 and mates with the seat cushion 10. At this time, it is not necessary to remove the headrest 201 on the backrest 20, which is located above the seat surface of the seat cushion 10.

[0116] When the folding seat is used as a front seat, the seat cushion 10 and backrest 20 can be connected to form a bed, allowing passengers to lie down and rest, or to store more items in the vehicle. The folding seat can also be used as a second-row seat or a rear seat.

[0117] Furthermore, such as Figure 14As shown, the flip seat also includes a vertically folded state, with the seat cushion bracket 3 arranged vertically and located in front of the base frame 1 and the fixed frame 4, the movable linkage group 6 in a retracted state, and the headrest 201 removed.

[0118] When the folding seat is in the front or middle row, the flip-up seat frame is in a vertically folded state. At this time, the headrest 201 can be removed, and the backrest bracket 30 and backrest 20 can be flipped forward and downward, with the top of the backrest 20 contacting the back of the seat cushion 10. Simultaneously, the entire folding seat can be pushed forward along the slide rail 11 to create space in the rear. Passengers can sit on the back of the backrest 20 facing the rear, sitting face-to-face with the rear passengers.

[0119] The flip-up seat and folding seat in this invention are not limited to front, middle and rear seats in vehicles, but can also be used on other seats that need to be flipped and folded, such as indoor seats, outdoor seats, furniture seats, public place seats, and seats set in the cabin.

[0120] The above description is merely the principle and preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of the present invention, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. A flip-up seat frame, comprising a base frame and a seat cushion support, the base frame being arranged laterally, the seat cushion support being connected to the base frame and used for mounting a seat cushion, characterized in that, The flip-up seat frame further includes a fixed frame, a first connecting rod, and a movable connecting rod assembly. The fixed frame is fixedly connected to the base frame. The two ends of the movable connecting rod assembly and the first connecting rod are rotatably connected to the seat cushion support and the fixed frame, respectively. The flip-up seat frame includes at least an initial state and a first extended state. The movable connecting rod assembly includes at least a retracted state and an extended state. In the initial state, the seat cushion support is arranged laterally and located above the base frame, the first connecting rod and the movable connecting rod assembly are folded between the seat cushion support and the fixed frame, and the movable connecting rod assembly is in the retracted state; In the first extended state, the first connecting rod and the movable connecting rod group drive the seat cushion bracket to flip forward, the movable connecting rod group is in the extended state, and the seat cushion bracket moves to the front of the base frame and the fixed frame and is arranged laterally; The movable linkage assembly includes a second link, a third link, and a fourth link. One end of the second link is rotatably connected to the seat cushion support, and the other end is rotatably connected to one end of the third link. The other end of the third link is rotatably connected to the fixed frame. A sliding groove is provided on the second link. A slider is provided at one end of the fourth link, and the slider can slide along the sliding groove. The other end of the fourth link is coaxial with and rotatably connected to the other end of the third link. In the contracted state, the slider is located at the first end of the groove, and the second connecting rod, the third connecting rod, and the fourth connecting rod form a triangle; In the extended state, the slider slides along the groove, and the second connecting rod and the third connecting rod move relative to each other to the first position.

2. The flip-up seat according to claim 1, characterized in that, It also includes a torsion spring, which is installed between the third link and the fixed frame; In the contracted state, the torsion spring keeps the slider at the beginning of the groove; In the extended state, the torsion spring drives the third link to rotate toward the direction of the fourth link, and the slider slides along the groove.

3. The flip-up seat according to claim 1, characterized in that, It also includes a first motor, which is mounted on the fixed frame and is used to drive the first connecting rod to rotate. When the first connecting rod rotates, it can drive the seat cushion support to rotate.

4. The flip-up seat according to claim 1 or 3, characterized in that, It also includes a second motor, which is connected to the third link and is used to drive the third link to rotate.

5. The flip-up seat according to claim 1, characterized in that, It also includes a pull cord and a seat support lock. The seat support lock is installed on the seat support. The pull cord is connected to the seat support lock. When the pull cord is pulled, the pull cord causes the seat support lock to unlock the seat support. When the pull cord is pulled again, the pull cord causes the seat support to flip upward and forward from the initial state.

6. The flip-up seat according to claim 1, characterized in that, The flip-up seat also includes a vertically folded state, the seat cushion support is arranged vertically and located in front of the base frame and the fixed frame, and the movable linkage assembly is in a retracted state.

7. A folding chair, comprising a backrest, a seat cushion, and a backrest support, wherein the backrest is mounted on the backrest support, characterized in that, It also includes the flip-up seat frame according to any one of claims 1-6, wherein the backrest support is rotatably connected to the base frame; In the initial state, the backrest support is flipped upward relative to the base frame to the unfolded position; In the first extended position, the backrest bracket flips forward and downward toward the base frame, and the backrest is located above the base frame and in a horizontal direction.

8. The folding seat according to claim 7, characterized in that, The backrest includes a headrest, which is positioned above the seat cushion in the first extended state.

9. The folding seat according to claim 8, characterized in that, The flip-up seat also includes a vertically folded state, the seat cushion support is arranged vertically and located in front of the base frame and the fixed frame, the movable linkage is in a retracted state, and the headrest is removed.

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