Multifunctional automobile rear seat framework structure

Abstract

The utility model discloses a multifunctional automobile rear seat framework structure, which is characterized in that a plunger latch assembly and two slide rail assemblies are fixed on an automobile body, the upper end of a backrest framework is locked on the plunger latch assembly through a backrest lock, and two sides of the lower end of the backrest framework are respectively hinged on the two slide rail assemblies; the rear end of the seat cushion framework is hinged to the two sliding rail assemblies through angle adjusters, the plunger latch assembly can move up and down relative to a vehicle body, a reset spring is arranged on the plunger latch assembly, and when the sliding rail assemblies drive the backrest framework and the seat cushion framework to slide forwards, the lower end of the backrest framework can rotate backwards around the sliding rail assemblies. Meanwhile, the backrest framework can pull the plunger latch assembly to move downwards so as to realize a comfortable lying mode; after the backrest lock is unlocked, the backrest framework can be overturned forwards to be attached to the cushion framework, so that a backrest flat laying mode is realized; and after the angle adjuster is unlocked, the cushion framework can be overturned upwards, so that a cushion folding mode is realized. Smooth conversion of multiple modes can be achieved, and the requirements for riding comfort and seat space increase are met.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a multifunctional automotive rear seat frame structure. Background Technology

[0002] With the rapid development of the automotive industry, consumers are increasingly demanding higher functionality and comfort from car seats. As a crucial component of the vehicle interior, car seats not only fulfill the basic functions of supporting passengers and providing a comfortable ride, but have also evolved to offer various additional functions to meet diverse travel needs and different usage scenarios. Traditional rear seat frame structures are typically quite limited in function and present numerous inconveniences in mode transitions. For example, when passengers wish to adjust to a more comfortable reclining position while driving, traditional seats often struggle to coordinate smooth backrest angle adjustments with overall seat position adjustments, resulting in a complex and ineffective reclining mode that fails to provide the ideal relaxation experience. Furthermore, the unreasonable design of traditional seat frame structures makes transitions such as backrest flattening and seat cushion folding cumbersome and inefficient in terms of space utilization after the transition. When the backrest is laid flat, there may be gaps or unevenness between it and the seat cushion, affecting the flatness and utilization of the interior space. When the seat cushion is flipped up, it may not be able to reach the ideal flipping angle due to structural limitations, occupying unnecessary interior space and making it difficult to store items and move around. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention aims to provide a multifunctional automotive rear seat frame structure that can smoothly switch between multiple modes to meet the needs of passenger comfort and increased seat space.

[0004] To achieve the above objectives, this utility model proposes a multifunctional automotive rear seat frame structure, including a latch assembly, a backrest frame, a seat cushion frame, and two slide rail assemblies arranged opposite each other on the left and right sides. Both the latch assembly and the two slide rail assemblies are fixed to the vehicle body. The upper end of the backrest frame is equipped with a backrest lock, which is locked to the latch assembly. The lower ends of the backrest frame are respectively hinged to the two slide rail assemblies on both sides. The rear end of the seat cushion frame is hinged to the two slide rail assemblies via an adjuster and a seat cushion connecting pivot. The slide rail assemblies can drive the backrest frame and seat cushion frame to slide back and forth. The latch assembly can move up and down relative to the vehicle body, and a return spring is provided on the latch assembly. The return spring has an elastic force to drive the latch assembly to return to its original position. When the slide rail assembly drives the backrest frame and seat cushion frame to slide forward, the lower end of the backrest frame can rotate backward around the slide rail assembly, and at the same time, the upper end of the backrest frame can pull the latch assembly downward to achieve the reclining mode. When the backrest lock is unlocked, the backrest frame can flip forward to fit against the seat cushion frame to achieve the backrest flat mode. When the angle adjuster is unlocked, the seat cushion frame can flip upward to achieve the seat cushion folding mode.

[0005] In the above solution: the latch assembly includes a latch wire, a latch fixing bracket, and a backrest latch bracket. The backrest latch bracket is fixed to the vehicle body and has vertically extending grooves. The latch wire is fixed to the latch fixing bracket, and the latch fixing bracket is slidably limited within the groove by two bolts spaced vertically. The two bolts can be stepped bolts, and their vertical spacing provides good limiting and stabilizing effect on the movement of the latch fixing bracket within the groove.

[0006] In the above solution: a bushing is provided inside the slide groove, and the shank of the bolt passes through the bushing and is fixed to the latch fixing bracket, which changes the original direct contact between the bolt shank and the inner wall of the slide groove into indirect contact. The presence of the bushing greatly extends the service life of the component, ensures the smooth movement of the latch wire, and helps to eliminate friction noise between the bolt and the slide groove.

[0007] In the above scheme: the reset spring is a tension spring, the upper end of which is fixed to the backrest latch bracket, and the lower end of which is fixed to the latch fixing bracket. The structure is simple and the installation is convenient.

[0008] In the above scheme: the top of both the backrest latch bracket and the latch fixing bracket are vertically provided with horizontal lugs, and the return spring is connected between the two horizontal lugs. The presence of the horizontal lugs facilitates the installation of the return spring.

[0009] In the above solution: the backrest lock is equipped with a backrest unlocking pull strap. Pulling the backrest unlocking pull strap can unlock the backrest lock, allowing the latch wire to disengage from the backrest lock.

[0010] In the above solution: the slide rail assembly includes an upper slide rail and a lower slide rail that can slide relative to each other. A sliding locking mechanism is provided between the upper slide rail and the lower slide rail. The sliding locking mechanism is equipped with a sliding unlocking cable. A slide rail bracket is fixed on the upper slide rail. The lower end of the backrest frame and the rear end of the seat cushion frame are both hinged to the slide rail bracket. Pulling the sliding unlocking cable can unlock the slide rail assembly, allowing the upper slide rail to slide back and forth relative to the lower slide rail.

[0011] In the above solution: hinge brackets are welded to both sides of the lower end of the backrest frame, and each hinge bracket has a backrest rotation hole. Both slide rail brackets have backrest connecting shafts, and each backrest connecting shaft engages with the backrest rotation holes on the two hinge brackets to achieve hinged connection between the lower ends of the backrest frame and the two slide rail assemblies. The hinge brackets and backrest connecting shafts are designed with a compact structure, minimizing space occupation around the seat. In situations where interior space is limited in a car, this compact design provides passengers with more spaciousness.

[0012] In the above solution: the rear right side of the seat cushion frame is hinged to the right slide rail bracket via an adjuster, and the rear left side of the seat cushion frame is hinged to the left slide rail bracket via a seat connecting pivot and pivot hole. The adjuster and the seat connecting pivot are arranged opposite each other and located in front of the backrest connecting pivot. The adjuster is equipped with an adjuster unlocking handle. Moving the adjuster unlocking handle unlocks the adjuster, allowing the seat cushion frame to be adjusted upwards at any angle from 0° to 90°.

[0013] The beneficial effects of this utility model are as follows: 1. Through ingenious structural design, it can realize reclining mode, backrest flat mode, and seat cushion folding mode, greatly enriching the usage scenarios of the rear seats. Whether passengers want a more comfortable sitting posture during long-distance travel, need to expand the interior space for loading items, or need to store and organize the seats in daily use, all can be easily achieved through this seat frame structure, bringing users a more convenient, comfortable, and flexible driving experience. 2. Switching between modes can be completed through simple mechanical movements, such as the slide rail assembly driving the seat to slide back and forth, and the backrest lock and angle adjuster unlocking operations, without complicated steps, reducing the difficulty of user operation and improving the convenience of operation. 3. When adjusting to reclining mode, the slide rail assembly drives the seat cushion frame to move forward, which can simultaneously link with the backrest frame to adjust the angle. The rotation of the backrest frame can simultaneously link with the latch assembly to move downward. The overall structural design is ingenious and has high linkage. After the backrest lock is unlocked, the latch assembly can also automatically return to the design position through the return spring, which is convenient for the backrest frame to return to its original position and then lock. Attached Figure Description

[0014] Figure 1 This is an isometric view of the present invention.

[0015] Figure 2 This is an exploded view of this utility model.

[0016] Figure 3 This is an exploded view of the latch assembly.

[0017] Figure 4 This is a side view of the present invention in the design phase.

[0018] Figure 5 This is a side view of the present invention in its reclining mode.

[0019] Figure 6 This is a side view of the present invention in the backrest-flat mode.

[0020] Figure 7 This is a side view of the present invention in the seat cushion folded-up mode. Detailed Implementation

[0021] like Figure 1 As shown in Figure 7, a multi-functional automobile rear seat frame structure mainly consists of a latch assembly 1, a backrest frame 2, a seat cushion frame 4, and two sliding rail assemblies arranged opposite to each other on the left and right sides 3.

[0022] Both the latch assembly 1 and the two slide rail assemblies 3 are fixed to the vehicle body. The upper end of the backrest frame 2 is equipped with a backrest lock 202, which is locked to the latch assembly 1. The lower ends of the backrest frame 2 are hinged to the two slide rail assemblies 3 on both sides. The rear end of the seat cushion frame 4 is hinged to the two slide rail assemblies 3 via an adjuster 302 and a seat connecting pivot 305. Specifically, the front end of the seat cushion frame 4 can be supported on the vehicle body via a retractable footrest. The slide rail assembly 3 can drive the backrest frame 2 and the seat cushion frame 4 to slide back and forth. The latch assembly 1 can move up and down relative to the vehicle body, and the latch assembly 1 is equipped with a return spring 104, which has an elastic force to drive the latch assembly 1 to return upward.

[0023] When the slide rail assembly 3 drives the backrest frame 2 and seat cushion frame 4 to slide forward, the lower end of the backrest frame 2 can rotate backward around the slide rail assembly 3, while the upper end of the backrest frame 2 can pull the latch assembly 1 downward to achieve the reclining mode. When the backrest lock 202 is unlocked, the backrest frame 2 can flip forward to fit against the seat cushion frame 4 to achieve the backrest flat mode. When the angle adjuster 302 is unlocked, the seat cushion frame 4 can flip upward to achieve the seat cushion folding mode.

[0024] Preferably, the latch assembly includes a latch wire 105, a latch fixing bracket 103, and a backrest latch bracket 101. The backrest latch bracket 101 is fixed to the vehicle body and has vertically extending grooves. The latch wire 105 is fixed to the latch fixing bracket 103. The latch fixing bracket 103 is slidably limited in the groove by two bolts 106 spaced vertically. The two bolts 106 can be stepped bolts, and their vertical spacing provides good limiting and stabilizing effect on the movement of the latch fixing bracket 103 within the groove.

[0025] The middle part of the backrest latch bracket 101 arches forward relative to the left and right ends, and the sliding groove is arranged at the arch. This design is to reserve space for the installation of bolts 106, so that bolts 106 can be easily installed from the back of the backrest latch bracket 101.

[0026] Ideally, a bushing 102 is provided inside the slide groove, and the shank of the bolt 106 passes through the bushing 102 and is fixed to the latch fixing bracket 103. This changes the original direct contact between the shank of the bolt 106 and the inner wall of the slide groove to indirect contact. The presence of the bushing 102 greatly extends the service life of the component, ensures the smooth movement of the latch wire 105, and helps to eliminate frictional noise between the bolt 106 and the slide groove.

[0027] Ideally, the return spring 104 is a tension spring, with its upper end fixed to the backrest latch bracket 101 and its lower end fixed to the latch fixing bracket 103. This design is simple and easy to install.

[0028] Ideally, both the top of the backrest latch bracket 101 and the latch fixing bracket 103 are vertically provided with horizontal lugs, and the return spring 104 is connected between the two horizontal lugs. The presence of the horizontal lugs facilitates the installation of the return spring 104.

[0029] Ideally, the backrest lock 202 is equipped with a backrest unlocking pull strap 201. Pulling the backrest unlocking pull strap 201 will unlock the backrest lock 202, allowing the latch wire 105 to disengage from the backrest lock 202.

[0030] Preferably, the slide rail assembly 3 includes an upper slide rail and a lower slide rail that can slide relative to each other. A sliding locking mechanism is provided between the upper slide rail and the lower slide rail. The sliding locking mechanism is equipped with a sliding unlocking cable 401. A slide rail bracket 304 is fixed on the upper slide rail. The lower end of the backrest frame 2 and the rear end of the seat cushion frame 4 are both hinged to the slide rail bracket 304. Pulling the sliding unlocking cable 401 can unlock the slide rail assembly 3, allowing the upper slide rail to slide back and forth relative to the lower slide rail.

[0031] Ideally, hinge brackets 204 are welded to both sides of the lower end of the backrest frame 2. Each hinge bracket 204 has a backrest rotation hole 203. Both slide rail brackets 304 have backrest connecting shafts 301, which engage with the backrest rotation holes 203 on the two hinge brackets 204 to achieve hinge connection between the lower sides of the backrest frame 2 and the two slide rail assemblies 3. The hinge brackets 204 and backrest connecting shafts 301 are designed with a compact structure, minimizing space occupation around the seat. In situations with limited interior space in a car, this compact design provides passengers with more spaciousness.

[0032] Ideally, the rear right side of the seat cushion frame 4 is hinged to the right-side slide rail bracket 304 via an adjuster 302, and the rear left side of the seat cushion frame 4 is hinged to the left-side slide rail bracket 304 via a seat cushion connecting pivot 305 and a pivot hole. The adjuster 302 and the seat cushion connecting pivot 305 are arranged opposite each other and are located in front of the backrest connecting pivot 301. The adjuster 302 is equipped with an adjuster unlocking handle 303. By pulling the adjuster unlocking handle 303, the adjuster 302 can be unlocked. After the adjuster 302 is unlocked, the seat cushion frame 4 can be adjusted upwards to any angle from 0° to 90°.

Claims

1. A multifunctional automobile rear seat frame structure, comprising a latch assembly (1), a backrest frame (2), a seat cushion frame (4), and two slide rail assemblies (3) arranged opposite to each other on the left and right sides, wherein the latch assembly (1) and the two slide rail assemblies (3) are both fixed to the vehicle body, and the upper end of the backrest frame (2) is locked to the latch assembly (1) by a backrest lock (202), characterized in that: The lower ends of the backrest frame (2) are hinged to the two slide rail assemblies (3) on both sides respectively. The rear end of the seat cushion frame (4) is hinged to the two slide rail assemblies (3) through the angle adjuster (302) and the seat cushion connecting shaft (305). The slide rail assembly (3) can drive the backrest frame (2) and the seat cushion frame (4) to slide back and forth. The latch assembly (1) can move up and down relative to the vehicle body. The latch assembly (1) is provided with a return spring (104). The return spring (104) has an elastic force to drive the latch assembly (1) to return upward. When the slide rail assembly (3) drives the backrest frame (2) and the seat cushion frame (4) to slide forward, the lower end of the backrest frame (2) can rotate backward around the slide rail assembly (3), and at the same time, the upper end of the backrest frame (2) can pull the latch assembly (1) downward to achieve the reclining mode; when the backrest lock (202) is unlocked, the backrest frame (2) can be flipped forward to fit against the seat cushion frame (4) to achieve the backrest flat mode; when the angle adjuster (302) is unlocked, the seat cushion frame (4) can be flipped upward to achieve the seat cushion folding mode.

2. The multifunctional automotive rear seat frame structure according to claim 1, characterized in that: The latch assembly (1) includes a latch wire (105), a latch fixing bracket (103), and a backrest latch bracket (101). The backrest latch bracket (101) is fixed to the vehicle body and has a sliding groove extending vertically. The latch wire (105) is fixed to the latch fixing bracket (103), and the latch fixing bracket (103) is slidably limited in the sliding groove by two bolts (106) spaced vertically.

3. The multifunctional automotive rear seat frame structure according to claim 2, characterized in that: The groove is provided with a bushing (102), and the shank of the bolt (106) passes through the bushing (102) and is fixed to the latch fixing bracket (103).

4. The multifunctional automotive rear seat frame structure according to claim 3, characterized in that: The reset spring (104) is a tension spring, with its upper end fixed to the backrest latch bracket (101) and its lower end fixed to the latch fixing bracket (103).

5. The multifunctional automotive rear seat frame structure according to claim 4, characterized in that: The top ends of the backrest latch bracket (101) and the latch fixing bracket (103) are both vertically provided with horizontal lugs, and the reset spring (104) is connected between the two horizontal lugs.

6. The multifunctional automotive rear seat frame structure according to claim 1, characterized in that: The backrest lock (202) is equipped with a backrest unlocking strap (201).

7. The multifunctional automotive rear seat frame structure according to claim 1, characterized in that: The slide rail assembly (3) includes an upper slide rail and a lower slide rail that can slide relative to each other. A sliding locking mechanism is provided between the upper slide rail and the lower slide rail. The sliding locking mechanism is equipped with a sliding unlocking cable (401). A slide rail bracket (304) is fixed on the upper slide rail. The lower end of the backrest frame (2) and the rear end of the seat cushion frame (4) are both hinged to the slide rail bracket (304).

8. The multifunctional automotive rear seat frame structure according to claim 7, characterized in that: The lower ends of the backrest frame (2) are respectively welded with hinge brackets (204). The hinge brackets (204) are provided with backrest rotation holes (203). The two slide rail brackets (304) are each provided with backrest connecting shafts (301). The two backrest connecting shafts (301) cooperate with the backrest rotation holes (203) on the two hinge brackets (204) to realize the hinge connection between the lower ends of the backrest frame (2) and the two slide rail assemblies (3).

9. The multifunctional automotive rear seat frame structure according to claim 7, characterized in that: The rear right side of the seat frame (4) is hinged to the right slide rail bracket (304) via an adjuster (302), and the rear left side of the seat frame (4) is hinged to the left slide rail bracket (304) via a seat connecting pivot (305) and a pivot hole. The adjuster (302) and the seat connecting pivot (305) are arranged opposite each other and are located in front of the backrest connecting pivot (301). The adjuster (302) is equipped with an adjuster unlocking handle (303).

Images