Seat and backrest with forward rotation folding and eze

Abstract

The application relates to the field of automobile seats, in particular to a seat and backrest with EZE and forward rotation folding, which comprises a cushion framework, a backrest framework rotationally connected to the cushion framework, an angle adjuster for controlling the rotation angle of the backrest framework, a poking member, a first linkage piece, a second linkage piece and a ground lock cable; further comprising an angle adjuster cable for pulling the angle adjuster to unlock the angle adjuster, and a linkage piece cable for pulling the first linkage piece to rotate; when it is needed to only adjust the angle of the backrest framework, the angle adjuster cable is pulled, and the first linkage piece is located outside the arc track of the poking end of the poking member; when it is needed to fold and lay down the backrest framework and unlock the ground lock, the angle adjuster cable and the linkage piece cable are pulled, and the abutting part of the first linkage piece is rotated to the inside of the arc track of the poking end of the poking member. Through the scheme, the situation that the ground lock is still in the locked state in the process of rotating the backrest to completely lay down does not exist in the prior art.

Description

Technical Field

[0001] This invention relates to the field of automotive seats, and more specifically to a seat and backrest with an EZE that can rotate and fold forward. Background Technology

[0002] Chinese Patent Publication No. CN109664803B discloses a seat designed for easy access by rear passengers, comprising a seat cushion assembly and a backrest assembly. A floor lock is connected to the rear bottom of the seat cushion assembly. One side of the bottom of the backrest assembly is hinged to the seat cushion assembly via an adjuster, and the other side is hinged to the seat cushion assembly via a rotating pin that rotates synchronously with the adjuster. By operating the shoulder unlock handle or the adjuster unlock handle, the backrest cable is activated, unlocking the adjuster. The backrest and paddles rotate forward under the action of the backrest return spring assembly. When rotated to a certain angle, the paddle actuates linkage plate I, which in turn actuates linkage plate II. Linkage plate II pulls the floor lock cable, unlocking the floor lock. After unlocking, the entire seat, under the action of a flip-up spring, flips forward around the seat mounting bracket, providing space for rear passengers to enter and exit.

[0003] However, this existing technology has the following drawbacks: Unlocking via a shoulder-mounted unlock handle or an adjuster unlock handle involves rotating the seat back until it is fully reclined. During this process, a lever actuates linkage plate I, which in turn drives linkage plate II. Linkage plate II pulls the floor lock cable, unlocking the floor lock and causing the seat cushion to fold upwards. This existing technology cannot achieve a state where the floor lock remains engaged only when the seat back is fully reclined. However, in practical use, there are scenarios where users only need to fully recline the seat back without needing the floor lock to unlock. Summary of the Invention

[0004] The present invention aims to provide a seat and backrest with EZE that can rotate and fold forward, in order to solve the problem in the prior art where the floor lock remains locked during the process of the backrest being rotated to fully recline.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a seat with an EZE that rotates and folds forward, comprising a seat cushion frame, a backrest frame rotatably connected to the seat cushion frame, and an adjuster for controlling the rotation angle of the backrest frame; a toggle member is fixedly connected to the backrest frame; a first linkage plate and a second linkage plate are movably connected to the seat cushion frame; a floor lock cable for pulling the floor lock mechanism is connected to the second linkage plate; the seat cushion frame also includes an adjuster cable for pulling the adjuster to unlock it, and a linkage plate cable for pulling the first linkage plate to rotate; a first elastic member is connected to the first linkage plate. When only the backrest frame angle needs to be adjusted, the angle adjuster cable is pulled, the angle adjuster is unlocked, and the backrest frame can be folded and rotated. At this time, the first linkage plate is located in the outer area of ​​the arc-shaped trajectory of the toggle end under the action of the first elastic element. When the backrest frame needs to be folded down and the floor lock needs to be unlocked, the angle adjuster cable and the linkage cable are pulled. The linkage cable drives the first linkage plate to rotate, and the contact part of the first linkage plate rotates to the inner area of ​​the arc-shaped trajectory of the actuating end of the toggle piece. During the folding down process of the backrest frame, the actuating end of the toggle piece abuts against the contact part of the first linkage plate, and the toggle piece continues to drive the first linkage plate to rotate. The first linkage plate drives the second linkage plate to move, and the second linkage plate pulls the floor lock cable.

[0006] The principle and advantages of this solution are as follows: When only the backrest frame angle needs to be adjusted (at which time the floor lock mechanism does not need to be unlocked), the angle adjuster cable is pulled, the angle adjuster cable pulls the angle adjuster, the angle adjuster is unlocked, and the backrest frame can be folded and rotated. At this time, the first linkage plate is located in the outer area of ​​the arc-shaped trajectory of the toggle end under the action of the first elastic element. The first linkage plate will not affect the toggle element from following the backrest frame. The backrest frame angle can be adjusted, and the backrest frame can be laid down onto the seat cushion frame. This achieves the situation where only the backrest is laid down and the floor lock does not unlock.

[0007] When it is necessary to fold down the backrest frame and unlock the floor lock, pull the angle adjuster cable and the linkage cable. By pulling the linkage cable, the linkage cable drives the first linkage plate to rotate. The first linkage plate rotates at a certain angle, causing the contact part of the first linkage plate to rotate to the inner area of ​​the arc-shaped trajectory of the toggle end. By pulling the angle adjuster cable, the angle adjuster is unlocked, allowing the backrest frame to rotate. During the folding down of the backrest frame, because the contact area of ​​the first linkage plate is located inside the arc-shaped trajectory of the actuating end of the toggle member, the actuating end of the toggle member abuts against the contact area of ​​the first linkage plate. The toggle member continues to actuate the first linkage plate as the backrest frame rotates, causing the first linkage plate to rotate. The first linkage plate then moves the second linkage plate, which pulls the floor lock cable. The floor lock cable pulls the floor lock mechanism, unlocking it and allowing the seat cushion frame to fold down. This achieves the situation where the backrest is folded down onto the seat cushion, and the seat cushion can fold down after the floor lock is unlocked.

[0008] Therefore, with this solution, compared with the existing technology, the seat not only has the function of reclining the backrest onto the seat cushion and allowing the seat cushion to fold after the floor lock is unlocked, but also has the function of only reclining the backrest onto the seat cushion while keeping the seat cushion fixed in place without unlocking the floor lock. Users can choose between the reclining backrest state or the reclining backrest and foldable seat cushion state according to different usage scenarios and needs.

[0009] Preferably, as an improvement, after the backrest frame is folded down, the actuating element and the first linkage plate separate.

[0010] When the backrest frame needs to be folded down and the floor lock needs to be unlocked, as the backrest frame folds down, the backrest frame moves the first linkage plate to rotate via a toggle piece. When the backrest frame is folded down, the toggle piece and the first linkage plate separate, and the first linkage plate rotates in the opposite direction and resets under the action of the first elastic element. The toggle piece does not affect the reset of the first linkage plate.

[0011] Preferably, as an improvement, the angle adjuster cable includes a first angle adjuster cable and a second angle adjuster cable, the first angle adjuster cable and the second angle adjuster cable being connected to the angle adjuster respectively; the first angle adjuster cable and the linkage plate cable are jointly connected to a cable adapter device, and a main cable is connected to the cable adapter device; To fold the backrest frame down and unlock the floor lock, pull the main cable. When only the backrest frame angle needs to be adjusted, pull the second angle adjuster cable.

[0012] Therefore, when it is necessary to fold down the backrest frame and unlock the floor lock, pull the main cable. The main cable will pull the first angle adjuster cable and the linkage plate cable through the cable adapter. This achieves the simultaneous pulling of the first angle adjuster cable and the linkage plate cable by pulling one main cable, without having to pull the angle adjuster cable and the linkage plate cable separately. The operation is simple and convenient.

[0013] When only the backrest frame angle needs to be adjusted, pull the second angle adjuster cable. The second angle adjuster cable pulls the angle adjuster, thereby unlocking the angle adjuster and allowing the backrest to rotate. However, at this time, the first linkage plate will not be pulled by the cable. Under the action of the first elastic element, the first linkage plate is located in the outer area of ​​the arc-shaped trajectory of the toggle end of the toggle element. When the backrest rotates, the toggle element on the backrest will not abut against the first linkage plate and push the first linkage plate to rotate.

[0014] Preferably, as an improvement, the backrest frame is provided with a first unlocking handle, which is connected to the main cable.

[0015] Therefore, by operating the first unlocking handle on the backrest frame, the first unlocking handle pulls the main cable.

[0016] Preferably, as an improvement, the seat frame is provided with a second unlocking handle, which is connected to the second angle adjuster cable.

[0017] Therefore, by operating the second unlocking handle on the seat frame, the second unlocking handle pulls the second angle adjuster cable.

[0018] Preferably, as an improvement, there are two angle adjusters, namely a first angle adjuster and a second angle adjuster, and a connecting rod connects the first angle adjuster and the second angle adjuster; the second angle adjuster cable is connected to the second angle adjuster, and the first angle adjuster cable is connected to the first angle adjuster.

[0019] Therefore, the first and second angle adjuster cables act on the first and second angle adjusters respectively. When the first angle adjuster cable is pulled, it pulls the first angle adjuster, causing it to rotate and unlock. At the same time, the first angle adjuster drives the second angle adjuster to rotate and unlock via a connecting rod. In this way, both angle adjusters are unlocked, and the backrest can rotate.

[0020] Similarly, when the second angle adjuster cable is pulled, the second angle adjuster cable pulls the second angle adjuster, and the second angle adjuster rotates to unlock. At the same time, the second angle adjuster drives the first angle adjuster to rotate and unlock via the connecting rod. In this way, both angle adjusters are unlocked, and the backrest can rotate.

[0021] In summary, the linkage connects the two angle adjusters. As long as one angle adjuster rotates to unlock, the other angle adjuster will also rotate and unlock. At the same time, the first angle adjuster cable and the second angle adjuster cable do not need to be connected to the same angle adjuster. They are connected to different angle adjusters, which facilitates the setting of the first angle adjuster cable and the second angle adjuster cable.

[0022] Preferably, as an improvement, the actuating component includes a fixed frame and a movable paddle. The fixed frame is fixedly connected to the backrest frame, and the movable paddle is rotatably connected to the fixed frame. A second elastic element is connected between the movable paddle and the fixed frame. The fixed frame is provided with a blocking part that limits the movement of the movable paddle. The movable paddle abuts against the blocking part under the elastic force of the second elastic element. During the process of the movable paddle pushing the first linkage plate to rotate and driving the second linkage plate to move, the movable paddle and the blocking part are in a state of resistance. When the main cable is pulled, the backrest frame folds upward from the reclining position. When the movable lever comes into contact with the first linkage plate, the movable lever rotates on the fixed frame to avoid the first linkage plate.

[0023] Therefore, without this optimization and improvement, when it is necessary to flip the backrest frame from the reclined position upwards, pulling the main cable will pull the first angle adjuster cable, unlocking the angle adjuster and allowing the backrest frame to flip upwards from the reclined position. At the same time, the linkage cable will pull the first linkage plate, and the abutting part of the first linkage plate will rotate to the inner area of ​​the arc-shaped trajectory of the actuating end of the detonator. In this way, when the actuating end of the detonator abuts against the abutting part of the first linkage plate, it will prevent the backrest frame from continuing to rotate and fold upwards.

[0024] With this solution, when the actuating end of the actuating element comes into contact with the abutting part of the first linkage plate, because the movable actuating piece is rotatably connected to the fixed frame, even if the abutting part of the first linkage plate is located inside the arc-shaped trajectory of the actuating end of the actuating element, the movable actuating piece can rotate on the fixed frame to avoid the first linkage plate. The first linkage plate will not interfere with or hinder the rotation of the actuating element, and the actuating element can rotate normally with the backrest frame, allowing the backrest frame to continue rotating and folding upwards. As the backrest frame continues to rotate, the actuating end of the actuating element moves away from the first linkage plate, and the movable actuating piece resets under the action of the second elastic element.

[0025] Therefore, this solution solves the problem that when the actuating end of the actuating component abuts against the contact part of the first linkage plate, it hinders the rotation of the backrest frame and causes it to fold upward.

[0026] Preferably, as an improvement, the first linkage piece is provided with a pushing part, and the second linkage piece is provided with a pushed part, with the pushing part and the pushed part facing each other.

[0027] Therefore, when the actuating element moves the first linkage plate to rotate, the pushing part on the first linkage plate pushes the pushed part on the second linkage plate, thereby causing the second linkage plate to move.

[0028] Preferably, as an improvement, the abutting part is columnar.

[0029] Preferably, as an improvement, a sound-dampening washer is fitted on the outer side of the abutting part. The sound-dampening washer is made of a soft material, thereby preventing abnormal noises from occurring during metal-to-metal collisions when the movable lever abuts against the abutting part. Simultaneously, when the abutting part presses against the edge of the second linkage plate, it also prevents abnormal noises from occurring during metal-to-metal collisions. Furthermore, with the abutting part pressing against one edge of the second linkage plate and the other edge of the second linkage plate abutting against the limiting post, it can prevent the second linkage plate from shaking or vibrating, causing abnormal noises. Attached Figure Description

[0030] Figure 1 This is a structural diagram of a 40 / 60 split seat frame.

[0031] Figure 2 This is a structural diagram of a four-part seat frame.

[0032] Figure 3 for Figure 2 A structural diagram from another perspective.

[0033] Figure 4 for Figure 3 A partial structural diagram of the middle seat cushion frame.

[0034] Figure 5 for Figure 2Another structural diagram of the quarter-frame (at this time, the backrest frame is in a fully open state, that is, the backrest frame cannot rotate counterclockwise).

[0035] Figure 6 for Figure 5 Schematic diagram of the structure of the central actuator, the first linkage plate, the second linkage plate, etc.

[0036] Figure 7 for Figure 2 Another structural diagram of the quarter-frame (at this time, the backrest frame is in a fully open state, that is, the backrest frame cannot rotate counterclockwise).

[0037] Figure 8 for Figure 7 Schematic diagram of the structure of the central actuator, the first linkage plate, the second linkage plate, etc.

[0038] Figure 9 This is a schematic diagram of the structure of the first linkage piece and the second linkage piece.

[0039] Figure 10 The diagram illustrates the relative positions of the actuating element, the first linkage plate, and the second linkage plate when the backrest frame is fully open.

[0040] Figure 11 The diagram illustrates the relative positional relationship between the actuating element and the first linkage plate when only the backrest frame is folded.

[0041] Figure 12 The diagram illustrates the relative positional relationship between the toggle component and the first linkage piece when the backrest frame needs to be folded down and the floor lock mechanism needs to be unlocked.

[0042] Figure 13 It indicates that in Figure 12 Based on this, the actuating component continues to push the first linkage plate, and the first linkage plate drives the second linkage plate to rotate. The relative positions of the actuating component, the first linkage plate, and the second linkage plate are as follows.

[0043] Figure 14 It indicates that in Figure 13 The relative positional relationship of the actuating component, the first linkage piece, and the third linkage piece after the backrest frame is completely folded down.

[0044] Figure 15 It indicates that in Figure 14 Based on this, pulling the main cable causes the backrest frame to rotate upward and open, and the relative position of the two when the actuating piece passes the first linkage piece. Detailed Implementation

[0045] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: 1. Six-quarter seat; 2. Four-quarter seat; 3. Backrest frame; 4. Cushion frame; 5. Main cable; 6. First angle adjuster cable; 7. Linkage plate cable; 8. Linkage rod; 9. First angle adjuster; 10. Second angle adjuster; 11. Support leg; 12. Floor lock mechanism; 13. Return torsion spring; 14. Swing plate; 15. Second angle adjuster cable; 16. Fixing frame; 17. Movable lever; 18. Second linkage plate; 19. First linkage plate; 20. Abutting part; 21. Pushing part; 22. Pushed part; 23. Floor lock cable; 24. First elastic element; 25. Spring connecting lug; 26. Spring connecting part; 27. Fixing plate; 28. Blocking part; 29. ​​Cable connecting part.

[0046] The basic implementation examples are as follows: Figures 1-15 As shown.

[0047] Combination Figure 1 As shown, the 4 / 6 split seat includes a 4 / 6 split seat 2 and a 6 / 6 split seat 1. In this embodiment, a seat with an EZE and a forward-rotating and folding design can be applied to the 4 / 6 split seat 2 and the 6 / 6 split seat 1 respectively, or only to one of the 4 / 6 split seat 2 and the 6 / 6 split seat 1.

[0048] This embodiment uses a quarter-seat 2 as an example to describe a seat with an EZE that can rotate and fold forward.

[0049] Combination Figures 2-15 As shown, a seat with an EZE (Electronic Adjustment Function) that rotates and folds forward includes a seat cushion frame 4, a backrest frame 3 rotatably connected to the seat cushion frame 4, and an adjuster for controlling the rotation angle of the backrest frame 3. In this embodiment, the adjuster includes a first adjuster 9 and a second adjuster 10, located on opposite sides of the backrest frame 3. A connecting rod 8 connects the first adjuster 9 and the second adjuster 10, enabling linkage between them. When one adjuster is unlocked, the connecting rod 8 causes the other adjuster to unlock as well. The adjuster is prior art and will not be described in detail in this embodiment.

[0050] Combination Figure 5 and Figure 6 As shown, in this embodiment, a toggle element is fixedly connected to the side of the backrest frame 3 where the first angle adjuster 9 is located, and the fixing method is to fix it with bolts. The toggle element in this embodiment includes a fixed frame 16 and a movable lever 17. The fixed frame 16 is fixed to the backrest frame 3 with bolts, and the movable lever 17 is rotatably connected to the end of the fixed frame 16. A second elastic element, specifically a torsion spring, is provided between the movable lever 17 and the fixed frame 16. A blocking part 28 is integrally fixed on the fixed frame 16 to limit the movement of the movable lever 17. Figure 10 (As shown); the movable paddle 17 abuts against the blocking part 28 under the elastic force of the second elastic element. Figure 10The middle blocking part 28 is located above the movable paddle 17.

[0051] Combination Figures 5-9 As shown, a fixing plate 27 is fixed to the seat cushion frame 4. A first linkage plate 19 and a second linkage plate 18 are rotatably connected to the fixing plate 27, and the first linkage plate 19 and the second linkage plate 18 are set at the same rotation center. The first linkage plate 19 is located between the second linkage plate 18 and the fixing plate 27. A floor lock cable 23 for pulling the floor lock mechanism 12 is connected to the side of the second linkage plate 18 away from the first linkage plate 19. The floor lock mechanism 12 is used to lock the seat cushion. The floor lock mechanism 12 is prior art and will not be described in detail in this embodiment.

[0052] In this embodiment, a mating portion 20 is fixed to the end of the first linkage plate 19. The mating portion 20 is specifically columnar and is used to abut against the movable paddle 17. To avoid metal-on-metal collision noise when the movable paddle 17 abuts against the mating portion 20, a sound-absorbing washer, such as a sponge sleeve, can be fitted onto the mating portion 20. The first linkage plate 19 is provided with a spring connecting portion 26, and a first elastic element 24 is connected to the spring connecting portion 26. The first elastic element 24 is specifically a tension spring, and the other end of the first elastic element 24 is fixed to the spring connecting lug 25 of the fixing plate 27. Figure 10 As shown, the first linkage plate 19 is provided with a pushing part 21, and the second linkage plate 18 is provided with a pushed part 22. The pushed part 22 is located to the right of the pushing part 21. When the first linkage plate 19 rotates, the pushing part 21 of the first linkage plate 19 moves to the pushed part 22, and the first linkage plate 19 can push the second linkage plate 18 to rotate counterclockwise.

[0053] The seat in this embodiment also includes an adjuster cable for pulling the adjuster to unlock it, and a linkage cable 7 for pulling the first linkage plate 19 to rotate. Combined with Figure 2 , Figure 3 and Figure 4 As shown, the angle adjuster cable in this embodiment includes a first angle adjuster cable 6 and a second angle adjuster cable 15. The first angle adjuster cable 6 and the second angle adjuster cable 15 are respectively connected to the first angle adjuster 9 and the second angle adjuster 10. The first angle adjuster cable 6 and the linkage cable 7 are jointly connected to a cable adapter device, and a main cable 5 is connected to the cable adapter device. A first unlocking handle is provided on the top of the backrest frame 3, and the first unlocking handle is connected to the main cable 5.

[0054] Combination Figure 3 and Figure 4As shown, the seat frame 4 is provided with a second unlocking handle. The second unlocking handle includes a swing plate 14 and a handle (not shown in the figure) for rotating the swing plate 14. The swing plate 14 is rotatably connected to the seat frame 4. The swing plate 14 is connected to the second adjuster cable 15. By operating the handle, the handle drives the swing plate 14 to swing, and the swing plate 14 pulls the second unlocking handle, which can unlock the second adjuster 10.

[0055] Combination Figure 8 , Figure 9 As shown, a cable connection part 29 is fixedly provided on the side of the first linkage piece 19 near the backrest frame 3. The linkage piece cable 7 is connected to the cable connection part 29 of the first linkage piece 19, thereby realizing the connection between the linkage piece cable 7 and the first linkage piece 19.

[0056] The different states in which the seat in this embodiment is used are described below.

[0057] Combination Figure 7 , Figure 8 and Figure 10 As shown, when the backrest frame 3 is in the fully open state, it cannot be rotated counterclockwise for angle adjustment. At this time, the movable lever 17 is positioned above the abutting portion 20 of the first linkage plate 19, and the first linkage plate 19 is in a position under the action of the first elastic element 24. Figure 8 In the indicated state, the columnar abutting portion 20 of the first linkage plate 19 abuts against the upper edge of the second linkage plate 18. A limiting post is fixed on the fixing plate 27, and the lower edge of the second linkage plate 18 abuts against the limiting post. There is a gap between the pushing portion 21 and the pushed portion 22. Due to the installation of the noise-absorbing washer, when the abutting portion 20 presses against the edge of the second linkage plate 18, it can also prevent abnormal noises from occurring during metal-to-metal collisions. Furthermore, the abutting portion 20 presses against one edge of the second linkage plate 18, and the other edge of the second linkage plate 18 abuts against the limiting post. Both of them jointly limit the second linkage plate 18, which can prevent the second linkage plate 18 from shaking or vibrating abnormally.

[0058] When it is necessary to rotate the backrest frame 3 clockwise to adjust the angle without unlocking the floor lock mechanism 12, the second unlocking handle pulls the second angle adjuster cable 15, which in turn pulls the second angle adjuster 10, unlocking it. Simultaneously, the second angle adjuster 10, via the connecting rod 8, also unlocks the first angle adjuster 9, allowing the backrest frame 3 to fold and rotate. Figure 10 and Figure 11 As shown, when the backrest frame 3 rotates clockwise, the actuating element will rotate along the arrow shown in F1. At this time, under the action of the first elastic element 24, the first linkage plate 19 is located in the outer region of the arc-shaped trajectory of the actuating end of the actuating element (specifically the lower end of the movable actuating plate 17). Figure 11 As shown, the abutting part 20 of the first linkage plate 19 will not abut against the movable lever 17, thus not affecting the movement of the lever following the backrest frame 3. The backrest frame 3 can rotate clockwise normally for adjustment, and the backrest frame 3 can be laid down onto the seat cushion frame 4. This achieves the situation where only the backrest is laid down and the floor lock is not unlocked, while the seat cushion remains locked on the floor lock mechanism 12. Similarly, when it is necessary to rotate the backrest frame 3 counterclockwise to reset, the second angle adjuster cable 15 is pulled by the second unlocking handle. Both the first angle adjuster 9 and the second angle adjuster 10 are unlocked, and the backrest frame 3 can rotate counterclockwise to reset. However, the first linkage plate 19 and the second linkage plate 18 will not rotate. The first linkage plate 19 will not affect the rotation of the lever, and the backrest frame 3 can rotate counterclockwise normally for adjustment.

[0059] When it is necessary to fold down the backrest frame 3 and unlock the floor lock, the first unlocking handle is pulled. The first unlocking handle pulls the main cable 5, which, through the cable adapter, pulls the first angle adjuster cable 6 and the linkage plate cable 7, thus achieving simultaneous pulling of the first angle adjuster cable 6 and the linkage plate cable 7 by pulling the main cable 5. At this time, the linkage plate cable 7 is... Figure 12 Under the pull of F2, the first linkage plate 19 rotates counterclockwise, and the first linkage plate 19 moves from... Figure 10 The state shown is rotated as Figure 12 In the indicated state, the abutting portion 20 of the first linkage piece 19 rotates to the inner region of the arc-shaped trajectory of the actuating end of the actuating member (the bottom end of the movable actuating piece 17). Simultaneously, the first angle adjuster cable 6 pulls the first angle adjuster 9, unlocking the first angle adjuster 9 and the second angle adjuster 10, allowing the backrest frame 3 to rotate. During the clockwise rotation and folding down of the backrest frame 3, combined with... Figure 12 As shown, the actuating element moves in the direction indicated by F1, and the movable paddle 17 abuts against the abutting part 20 of the first linkage plate 19. The actuating element continues to rotate the first linkage plate 19, thus engaging... Figure 13 The first linkage plate 19 is shown rotating to this position. During this counterclockwise rotation, the pushing part 21 of the first linkage plate 19 abuts against the pushed part 22 of the second linkage plate 18. The first linkage plate 19 drives the second linkage plate 18 to rotate counterclockwise, and the second linkage plate 18 pulls the ground lock cable 23. The ground lock cable 23 pulls the ground lock mechanism 12, thereby unlocking the ground lock mechanism 12. The seat frame 4 is no longer locked by the ground lock mechanism 12, and the seat frame 4 can be folded. Figure 2 , Figure 7 As shown, one end of the seat frame 4 rotates and folds on the support foot 11. Figure 2 The support frame is equipped with a reset torsion spring 13. When the seat frame 4 needs to be reset after being folded, the reset torsion spring 13 can assist the seat frame 4 to rotate in the opposite direction to reset.

[0060] After the floor lock is unlocked, the backrest frame 3 is folded down, and the movable lever 17 separates from the abutment part 20 of the first linkage plate 19. The first linkage plate 19 rotates clockwise and resets under the action of the first elastic element 24. At the same time, the first linkage plate 19 drives the second linkage plate 18 to rotate clockwise and reset through the abutment part 20. Finally, the positions of the lever, the first linkage plate 19, and the second linkage plate 18 are closed. Figure 14 As shown.

[0061] exist Figure 14 In this state, when the first operating handle is pulled to fold the backrest frame 3 upwards, at this time... Figure 15 As shown, under the action of the tension force F2, the linkage cable 7 pulls the first linkage plate 19 from... Figure 14 State transition Figure 15 State. Simultaneously, the backrest frame 3 rotates counterclockwise, and the movable lever 17 moves to the left side of the contact portion 20 of the first linkage plate 19. The movable lever 17 abuts against the contact portion 20 of the first linkage plate 19. Since the movable lever 17 is rotatably connected to the fixed frame 16, when the movable lever 17 abuts against the contact portion 20 of the first linkage plate 19, the movable lever 17 rotates clockwise on the fixed frame 16 to avoid the contact portion 20 of the first linkage plate 19. The first linkage plate 19 does not interfere with or obstruct the rotation of the movable lever 17, and the movable lever 17 can rotate normally with the backrest frame 3. The backrest frame 3 can continue to rotate counterclockwise and fold upwards. As the backrest frame 3 continues to rotate, the movable lever 17 moves away from the first linkage plate 19, and the movable lever 17 moves to... Figure 15 On the right side of the first linkage plate 19, the movable paddle 17 rotates clockwise on the fixed frame 16 under the action of the second elastic element and resets.

[0062] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A seat with an EZE mechanism that rotates and folds forward, comprising a seat cushion frame, a backrest frame rotatably connected to the seat cushion frame, and an angle adjuster for controlling the rotation angle of the backrest frame, wherein a toggle is fixedly connected to the backrest frame, and a first linkage plate and a second linkage plate are movably connected to the seat cushion frame, and a floor lock cable for pulling a floor lock mechanism is connected to the second linkage plate; characterized in that: It also includes an adjuster cable for pulling the adjuster to unlock it, and a linkage cable for pulling the first linkage plate to rotate; a first elastic element is connected to the first linkage plate; When only the backrest frame angle needs to be adjusted, the angle adjuster cable is pulled, the angle adjuster is unlocked, and the backrest frame can be folded and rotated. At this time, the first linkage plate is located in the outer area of ​​the arc-shaped trajectory of the toggle end under the action of the first elastic element. When the backrest frame needs to be folded down and the floor lock needs to be unlocked, the angle adjuster cable and the linkage cable are pulled. The linkage cable drives the first linkage plate to rotate, and the contact part of the first linkage plate rotates to the inner area of ​​the arc-shaped trajectory of the actuating end of the toggle piece. During the folding down process of the backrest frame, the actuating end of the toggle piece abuts against the contact part of the first linkage plate, and the toggle piece continues to drive the first linkage plate to rotate. The first linkage plate drives the second linkage plate to move, and the second linkage plate pulls the floor lock cable.

2. A seat with an EZE and capable of rotating and folding forward according to claim 1, characterized in that: After the backrest frame is folded down, the actuating element and the first linkage piece separate.

3. A seat with an EZE and capable of rotating and folding forward according to claim 1, characterized in that: The angle adjuster cable includes a first angle adjuster cable and a second angle adjuster cable, which are respectively connected to the angle adjuster; the first angle adjuster cable and the linkage plate cable are jointly connected to a cable adapter device, and a main cable is connected to the cable adapter device. To fold the backrest frame down and unlock the floor lock, pull the main cable. When only the backrest frame angle needs to be adjusted, pull the second angle adjuster cable.

4. A seat with an EZE and capable of rotating and folding forward according to claim 3, characterized in that: The backrest frame is equipped with a first unlocking handle, which is connected to the main cable.

5. A seat with an EZE and capable of rotating and folding forward according to claim 3, characterized in that: The seat frame is equipped with a second unlocking handle, which is connected to the second angle adjuster cable.

6. A seat with an EZE and capable of rotating and folding forward according to claim 3, characterized in that: There are two angle adjusters, namely the first angle adjuster and the second angle adjuster, and a connecting rod connects the first angle adjuster and the second angle adjuster; the second angle adjuster cable is connected to the second angle adjuster, and the first angle adjuster cable is connected to the first angle adjuster.

7. A seat with an EZE and capable of rotating and folding forward according to claim 3, characterized in that: The actuating component includes a fixed frame and a movable paddle. The fixed frame is fixedly connected to the backrest frame, and the movable paddle is rotatably connected to the fixed frame. A second elastic element is connected between the movable paddle and the fixed frame. The fixed frame is provided with a blocking part to limit the movement of the movable paddle. The movable paddle abuts against the blocking part under the elastic force of the second elastic element. During the process of the movable paddle pushing the first linkage plate to rotate and driving the second linkage plate to move, the movable paddle and the blocking part are in a state of mutual resistance. When the main cable is pulled, the backrest frame folds upward from the reclining position. When the movable lever comes into contact with the first linkage plate, the movable lever rotates on the fixed frame to avoid the first linkage plate.

8. A seat with an EZE and capable of rotating and folding forward according to claim 1, characterized in that: The first linkage piece is provided with a pushing part, and the second linkage piece is provided with a pushed part, the pushing part and the pushed part being opposite to each other.

9. A seat with an EZE and capable of rotating and folding forward according to claim 1, characterized in that: The abutting part is columnar.

10. A seat with an EZE and capable of rotating and folding forward according to claim 9, characterized in that: A sound-absorbing gasket is fitted on the outside of the abutting part.

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