Rear seat folding mechanism

Abstract

The utility model relates to the field of automobile seat structures, in particular to a rear-row seat folding mechanism which comprises a backrest framework, a cushion framework, a supporting leg framework and a linkage unlocking structure, one end of the cushion framework is rotatably connected with the backrest framework in a limiting mode, the other end of the cushion framework is provided with a connecting plate and a supporting rod, and the backrest framework is rotatably connected with the supporting leg framework through an angle adjuster. The connecting plate is fixedly connected with the seat cushion framework, the supporting rod and the seat cushion framework rotate in a limited mode through the connecting plate, the connecting plate is provided with a limiting pin column, the supporting rod is provided with a lock hole, the limiting pin column slides in the lock hole in a limited mode, the linkage unlocking structure comprises a second linkage inhaul cable and a third linkage inhaul cable, and one end of the second linkage inhaul cable is fixedly connected with an unlocking piece of the recliner. One end of the third linkage inhaul cable is fixedly connected with an unlocking piece of the angle adjuster, and the other end of the third linkage inhaul cable is connected with the limiting pin column. According to the utility model, one-key linkage unlocking is realized, and two folding forms are presented, so that more use space is saved, and the structure is simple and stable.

Description

Technical Field

[0001] The utility model relates to the field of automobile seat structures, in particular to a rear seat structure. Background Art

[0002] Due to the limited interior space of the car, in order to increase the usable space of the trunk, the conventional rear seat adjustment method is only to fold the backrest forward, and the seat cushion does not change, so a part of the upper space is occupied, and the current rear seat backrest can only provide a single adjustment method, which cannot meet people's current needs.

[0003] The technical problem to be solved by this application is: how to increase the usable space of the rear seats. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide a rear seat folding mechanism.

[0005] The technical solution adopted by the utility model is as follows: a rear seat folding mechanism comprises a backrest frame, a seat cushion frame, a support leg frame and a linkage unlocking structure, one end of the seat cushion frame is connected to the backrest frame for limited rotation, and the other end is provided with a connecting plate and a support rod, the backrest frame and the support leg frame are connected for rotation through an angle adjuster, the connecting plate is fixedly connected to the seat cushion frame, the support rod is limited for rotation with the seat cushion frame through the connecting plate, the connecting plate is provided with a limiting pin, the support rod is provided with a locking hole, the limiting pin slides in the locking hole for limited rotation, the linkage unlocking structure comprises a second linkage cable and a third linkage cable, one end of the second linkage cable is fixedly connected to the unlocking piece of the angle adjuster, one end of the third linkage cable is fixedly connected to the unlocking piece of the angle adjuster, and the other end is connected to the limiting pin.

[0006] In some embodiments, the side of the seat cushion frame is in an "L"-shaped structure.

[0007] In some embodiments, the connecting plate is provided with an unlocking plate and a limiting pin, the unlocking plate is provided with a fixedly connected unlocking pin, the limiting pin is fixedly connected to the connecting plate, the unlocking plate slides within the limit limit of the limiting pin, the unlocking pin passes through the connecting plate and is connected to the lock hole, a return spring is provided between the unlocking plate and the connecting plate, and the axial directions of the unlocking pin and the limiting pin are consistent.

[0008] In some embodiments, the seat cushion frame is provided with a fixing plate, the unlocking plate is arranged between the fixing plate and the connecting plate, and the third linkage cable passes through the fixing plate and is fixedly connected with the unlocking plate.

[0009] In some embodiments, the linkage unlocking structure includes a second linkage member, which rotates at an upper limit position of the backrest frame, one end of the second linkage cable is fixedly connected to the second linkage member, and a reset spring is provided between the second linkage member and the backrest frame.

[0010] In some embodiments, the linkage unlocking structure includes a first linkage cable and a first linkage member, one end of the first linkage member is connected to the backrest frame for limited rotation, and the other end is connected to a first unlocking strap with a fixed connection, one end of the first linkage cable is fixedly connected to the first linkage member, and the other end is fixedly connected to the second linkage member, and the first linkage cable and the second linkage cable are arranged relatively to each other on the second linkage member.

[0011] In some embodiments, one end of the second linkage is rotatably connected to the backrest frame, and the other end is provided with a second unlocking strap that is fixedly connected.

[0012] In some embodiments, a ground lock structure is included, which is arranged under the seat cushion frame. The ground lock structure includes a hook lock and a fixed lock seat. The fixed lock seat is provided with a fixed lock slot. The support rod is arranged in the fixed lock slot. The hook lock slides within the upper limit position of the fixed lock seat. The hook lock is provided with a sliding lock slot. The slot of the fixed lock slot faces the seat cushion frame, and the slot of the sliding lock slot is in a different direction from the slot of the fixed lock slot.

[0013] The beneficial effects of the utility model are:

[0014] The rear seat folding mechanism uses a linkage unlocking structure to unlock the positional relationship between the backrest frame and the supporting foot frame, as well as the positional relationship between the supporting foot frame and the supporting rod, thereby achieving one-touch linkage unlocking. After unlocking, the seat cushion frame can be sunk and folded, or folded backwards together with the backrest frame, thereby making more usable space. The structure is simple and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment;

[0016] Figure 2 is a schematic diagram of a side cross-sectional structure of an embodiment;

[0017] Figure 3 is a schematic diagram of the structure of the support rod;

[0018] Figure 4 for Figure 1 An enlarged schematic diagram of the structure marked A;

[0019] Figure 5 for Figure 1 An enlarged schematic diagram of the structure marked with reference number B;

[0020] Figure 6 for Figure 1 An enlarged schematic diagram of the structure labeled C;

[0021] Figure 7 A schematic diagram of a folding structure of an embodiment;

[0022] Figure 8This is another schematic diagram of the folding structure of the embodiment;

[0023] The numbers and names in the figure correspond to each other as follows: 1. Backrest frame; 2. Seat cushion frame; 3. Support leg frame; 4. Slide rail structure; 11. Recliner; 21. Fixed plate; 22. Connecting plate; 23. Support rod; 24. Unlocking plate; 25. Return spring; 221. Limit pin; 241. Unlocking pin; 41. Hook lock; 42. Fixed lock seat; 43. Ground lock cable; 51. First linkage cable; 52. Second linkage cable; 53. Third linkage cable; 54. First linkage member; 55. Second linkage member; 56. First unlocking strap; 57. Second unlocking strap; 58. Return spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 The utility model provides a technical solution: an embodiment, including a backrest frame 1, a seat cushion frame 2, a support leg frame 3, a slide rail structure 4 and a linkage unlocking structure. The backrest frame 1 and the support leg frame 3 are connected in limited rotation via a recliner 11. One end of the seat cushion frame 2 is connected in limited rotation with the backrest frame 1, and the support leg frame 3 slides in limited position on the slide rail structure 4. The side of the seat cushion frame 2 is an "L"-shaped structure. During normal use, a portion of the seat cushion frame 2 and the backrest frame 1 are on the same axis. The recliner 11 in this embodiment is unlocked by pulling the unlocking key to unlock the recliner 11, thereby unlocking the angle between the backrest frame 1 and the support leg frame 3.

[0026] See also Figure 1-Figure 5The linkage unlocking structure includes a first linkage cable 51, a second linkage cable 52, a third linkage cable 53, a first linkage member 54 and a second linkage member 55. The first linkage cable 51, the second linkage cable 52 and the third linkage cable 53 are all bidirectional cables. One end of the first linkage member 54 is connected to the backrest frame 1 for limited rotation, and the other end is connected to a first unlocking strap 56 with a fixed connection. One end of the second linkage member 55 is connected to the backrest frame 1 for limited rotation, and the other end is connected to a second unlocking strap 57 with a fixed connection. The first linkage member 54 is arranged between the backrest frame 1 and the cushion frame 2 and arranged on one side of the backrest frame 1. In order to save space, the connection position of the first linkage member 54 and the backrest frame 1 can be the connection position of the backrest frame 1 and the cushion frame 2. The second linkage member 55 is arranged at the backrest portion of the backrest frame 1, and a return spring 58 is arranged between the second linkage member 55 and the backrest frame 1. One end of the first linkage cable 51 is fixedly connected to the first linkage member 54, and the other end is fixedly connected to the second linkage member 55. One end of the second linkage cable 52 is fixedly connected to the second linkage member 55, and the other end is connected to the unlocking member of the recliner 11. On the second linkage member 55, the cable heads of the first linkage cable 51 and the second linkage cable 52 are arranged opposite to each other. The second unlocking pull belt 57 and the first linkage cable 51 pull the first linkage member 54 in the same direction. The first linkage member 54 and the second linkage member 55 are reset by the reset spring 58.

[0027] A fixing plate 21, a connecting plate 22 and a supporting rod 23 are provided at one end of the seat cushion frame 2 away from the backrest frame 1. The fixing plate 21 and the connecting plate 22 are fixedly connected to the seat cushion frame 2 respectively. The supporting rod 23 is connected to the upper limit position and rotation on the connecting plate 22. The connecting plate 22 is provided with an unlocking plate 24 and a limiting pin 221. The unlocking plate 24 is provided with an unlocking pin 241 that is fixedly connected. The limiting pin 221 is fixedly arranged on the connecting plate 22. The unlocking plate 24 is arranged between the fixing plate 21 and the connecting plate 22. The supporting rod 23 is provided with a locking hole. The unlocking pin 241 passes through the connecting plate 22 and is connected to the locking hole. The unlocking pin 241 is limitedly slid in the locking hole. The unlocking plate 24 is limitedly slid on the limiting pin 221. A return spring 25 is provided between the unlocking plate 24 and the connecting plate 22. The axial directions of the unlocking pin 241 and the limiting pin 221 are consistent. One end of the third linkage cable 53 is connected to the unlocking member of the recliner 11, and the other end passes through the fixing plate 21 and is fixedly connected to the unlocking plate 24. The fixing plate 21 is used to change the direction of the cable head of the third linkage cable 53 to limit the pulling direction of the third linkage cable 53 on the unlocking plate 24. On the unlocking member of the recliner 11, the cable heads of the second linkage cable 52 and the third linkage cable 53 are arranged opposite to each other. The unlocking pin 241 is used not only to limit the rotation of the support rod 23, but also to facilitate confirmation of whether the support rod 23 is rotated to a suitable angle.

[0028] See also Figure 6The slide rail structure 4 includes a ground lock structure, which is arranged below the cushion frame 2. The ground lock structure includes a hook lock 41, a fixed lock seat 42 and a ground lock cable 43. The fixed lock seat 42 is provided with a fixed lock slot, the notch of which faces the cushion frame 2, and the support rod 23 is arranged in the fixed lock slot. The hook lock 41 slides within the upper limit position on the fixed lock seat 42. The hook lock 41 is provided with a sliding lock slot, which is connected to the fixed lock slot, and the notch of the sliding lock slot faces forward. One end of the ground lock cable 43 is fixedly connected to the sliding hook lock 41, and the other end is fixedly provided with a ground lock strap. The hook lock 41 can be pulled manually by pulling the ground lock strap, thereby releasing the connection between the sliding lock slot and the support rod 23, and the support rod 23 can be pulled up from the fixed lock slot.

[0029] The utility model presents two forms after folding:

[0030] First: Please refer to Figure 7 The support rod 23 is disconnected from the sliding lock slot and the fixed lock slot in advance, the first unlocking pull strap 56 or the second unlocking pull strap 57 is pulled, the first linkage member 54 rotates, one end of the second linkage cable 52 is pulled, the unlocking member of the recliner 11 rotates, the backrest frame 1 and the support foot frame 3 are unlocked, one end of the third linkage cable 53 is pulled, the unlocking plate 24 slides along the limiting pin 221, the unlocking pin 241 is disconnected from the lock hole, the support rod 23 rotates and folds, the seat cushion frame 2 is folded toward the backrest frame 1, and the backrest frame 1 is folded backward to make room for the front position of the rear seat.

[0031] Second: Please refer to Figure 8 , the support rod 23 remains connected to the ground lock structure, the first unlocking strap 56 or the second unlocking strap 57 is pulled, the first linkage member 54 rotates, one end of the second linkage cable 52 is pulled, the unlocking member of the recliner 11 rotates, the backrest frame 1 and the support foot frame 3 are unlocked, one end of the third linkage cable 53 is pulled, the unlocking plate 24 slides along the limiting pin 221, the unlocking pin 241 is disconnected from the lock hole, the support rod 23 rotates and folds, the backrest frame 1 folds forward, and the seat cushion frame 2 sinks forward to make more space above the rear seat.

[0032] Since the side of the seat frame 2 is an "L"-shaped structure, when the backrest frame 1 is folded forward, the seat frame 2 after the support rod 23 is folded can support the backrest frame 1. The first unlocking pull bag and the second unlocking pull belt 57 can both unlock the recliner 11 and the support rod 23.

[0033] In order to facilitate pulling, in the present embodiment, the first unlocking pull strap 56 is arranged on one side of the seat cushion frame 2 , and the second unlocking pull strap 57 is arranged at the rear of the backrest frame 1 .

[0034] In order to make more room for the trunk, in this embodiment, the backrest frame 1 can slide forward using the slide rail structure 4, thereby making more room behind the rear seats. The slide rail structure 4 is a prior art.

[0035] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. The rear seat folding mechanism is characterized by: The invention comprises a backrest frame (1), a seat cushion frame (2), a support leg frame (3) and a linkage unlocking structure, wherein one end of the seat cushion frame (2) is connected to the backrest frame (1) for limited rotation, and the other end is provided with a connecting plate (22) and a support rod (23), the backrest frame (1) and the support leg frame (3) are connected for limited rotation via an angle adjuster (11), the connecting plate (22) is fixedly connected to the seat cushion frame (2), and the support rod (23) is connected to the seat cushion frame (2) for limited rotation via the connecting plate (22). The connecting plate (22) is provided with a limiting pin (221), the supporting rod (23) is provided with a locking hole, the limiting pin (221) slides in a limited position in the locking hole, the linkage unlocking structure comprises a second linkage cable (52) and a third linkage cable (53), one end of the second linkage cable (52) is fixedly connected to the unlocking piece of the recliner (11), one end of the third linkage cable (53) is fixedly connected to the unlocking piece of the recliner (11), and the other end is connected to the limiting pin (221).

2. The rear seat folding mechanism according to claim 1, characterized in that: The side surface of the seat cushion frame (2) is in an "L"-shaped structure.

3. The rear seat folding mechanism according to claim 1, characterized in that: The connecting plate (22) is provided with an unlocking plate (24) and a limiting pin (221); the unlocking plate (24) is provided with a fixedly connected unlocking pin (241); the limiting pin (221) is fixedly connected to the connecting plate (22); the unlocking plate (24) is limitedly slid on the limiting pin (221); the unlocking pin (241) passes through the connecting plate (22) and is connected to the lock hole; a return spring (25) is provided between the unlocking plate (24) and the connecting plate (22); and the axial directions of the unlocking pin (241) and the limiting pin (221) are consistent.

4. The rear seat folding mechanism according to claim 3, characterized in that: The seat cushion frame (2) is provided with a fixing plate (21), the unlocking plate (24) is arranged between the fixing plate (21) and the connecting plate (22), and the third linkage cable (53) passes through the fixing plate (21) and is fixedly connected to the unlocking plate (24).

5. The rear seat folding mechanism according to claim 1, characterized in that: The linkage unlocking structure comprises a second linkage member (55), the second linkage member (55) rotates at an upper limit position on the backrest frame (1), one end of the second linkage cable (52) is fixedly connected to the second linkage member (55), and a return spring (58) is provided between the second linkage member (55) and the backrest frame (1).

6. The rear seat folding mechanism according to claim 5, characterized in that: The linkage unlocking structure comprises a first linkage cable (51) and a first linkage member (54); one end of the first linkage member (54) is connected to the backrest frame (1) for limited rotation, and the other end is connected to a first unlocking strap (56) with a fixed connection; one end of the first linkage cable (51) is fixedly connected to the first linkage member (54), and the other end is fixedly connected to the second linkage member (55); the first linkage cable (51) and the second linkage cable (52) are arranged opposite to each other on the second linkage member (55).

7. The rear seat folding mechanism according to claim 5, characterized in that: One end of the second linkage member (55) is rotatably connected to the backrest frame (1), and the other end is provided with a second unlocking strap (57) which is fixedly connected.

8. The rear seat folding mechanism according to claim 1, characterized in that: The invention comprises a ground lock structure, wherein the ground lock structure is arranged below a cushion frame (2), the ground lock structure comprises a hook lock (41) and a fixed lock seat (42), the fixed lock seat (42) is provided with a fixed lock slot, the support rod (23) is arranged in the fixed lock slot, the hook lock (41) slides within the upper limit position on the fixed lock seat (42), the hook lock (41) is provided with a sliding lock slot, the slot of the fixed lock slot faces the cushion frame (2), and the slot of the sliding lock slot faces a different direction from the slot of the fixed lock slot.

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