High-strength automobile rear seat backrest framework structure

Abstract

The utility model discloses a high-strength automobile rear seat backrest framework structure which comprises a quartered seat framework and a sixth seat framework which are arranged side by side, and the quartered seat framework and the sixth seat framework are each of a rectangular frame structure. Butt joint parts are arranged at the lower end of the quartered seat framework and the lower end of the sixth seat framework side by side, fixing plates are arranged on the left portion of the upper end of the quartered seat framework and the right portion of the upper end of the sixth seat framework, and backrest lock mounting supports are arranged on the lower sides of the fixing plates. Lower connecting supports are arranged on the two sides of the lower end of the quartered seat framework and the two sides of the lower end of the sixth seat framework, a plurality of supports are fixedly arranged in the middle of the upper end of the quartered seat framework and the middle of the upper end of the sixth seat framework side by side, and headrest inserting sleeves are welded to the supports. The rear-row seat backrest framework can solve the problems that an existing rear-row seat backrest framework mostly adopts a round pipe structure and is prone to deformation and even breakage, and when the existing rear-row seat backrest framework is in butt joint with other components, the connection strength is low.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile rear seat backrest frame, specifically a high-strength automobile rear seat backrest frame structure. Background Technology

[0002] With the rapid development of the automotive industry and the increasing awareness of driving safety, the safety of car seats is receiving more and more attention. As the core load-bearing structure of the occupant restraint system, the strength of the rear seat backrest frame directly affects collision safety and passenger comfort. Existing rear seat backrest frames use round tubes as the main support structure. While round tubes possess a certain degree of toughness and ease of processing, their bending and torsional strength are relatively low, making them prone to deformation and even breakage, posing significant safety hazards. The round tube structure is susceptible to deformation and breakage, failing to effectively protect passenger safety. Furthermore, the numerous components fixed to the rear seat backrest frame are limited by the cross-sectional shape of the round tube. Therefore, developing a high-strength rear seat backrest frame structure with higher strength and better safety is of significant practical importance. Utility Model Content

[0003] This invention provides a high-strength automotive rear seat backrest frame structure, which can solve the problems that existing rear seat backrest frames mostly use round tube structures that are prone to deformation or even breakage, and have low connection strength when connected with other components.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-strength automotive rear seat backrest frame structure, comprising a four-part seat frame and a six-part seat frame arranged side by side, both of which are rectangular frame structures; the lower ends of both the four-part and six-part seat frames are provided with parallel connecting portions; the upper left portion of the four-part seat frame and the upper right portion of the six-part seat frame are each provided with a fixing plate; a backrest lock mounting bracket is provided on the lower side of the fixing plate; lower connecting brackets are provided on both sides of the lower ends of both the four-part and six-part seat frames; the four-part seat frame... Multiple brackets are fixedly installed side-by-side at the upper center of the frame and the six-point seat frame, and headrest insert sleeves are welded onto the brackets; a fixing frame is set at the upper center of the six-point seat frame; both the four-point seat frame and the six-point seat frame include two horizontally arranged crossbeams and two vertically arranged vertical beams. The crossbeams and vertical beams are made of square tubing and welded together, resulting in high structural strength. The fixing frame is used for assembling the seat belt of the middle passenger in the rear seat backrest. It connects with the child seat through the docking part. A backrest lock is provided on the backrest lock mounting bracket. It connects with the vehicle body through the backrest lock. The seat belts of the passengers on both sides of the rear seat are installed on the fixing plate. The headrest insert sleeve is used to install the headrest.

[0005] Preferably, two vertical beams are arranged side by side in the middle of the six-part seat frame to increase the structural strength of the six-part seat frame.

[0006] Preferably, mounting plates are fixedly connected between the vertical beams, and the mounting plates are used to install seat belt retractors.

[0007] Preferably, the four-part and six-part seat frames are provided with multiple transverse reinforcing bars, which are made of steel pipes. The transverse reinforcing bars increase the support of the backrest, providing better and more comfortable support.

[0008] Preferably, a connecting plate is fixedly installed on the transverse reinforcing rod. The connecting plate can increase the support area and strengthen the two transverse reinforcing rods, thereby further improving the support force.

[0009] Preferably, the four edges of the mating part are fixedly provided with a first flange, the lower end of the mating part is provided with a groove, the upper end of the mating part is provided with a mating opening, the bottom of the groove is fixed with a buckle, the buckle is U-shaped, the mating opening fits against the side and bottom of the crossbeam and is welded together.

[0010] Preferably, the lower connecting bracket includes a mounting panel with a rectangular recess at the lower end and a second flange extending forward at the edge of the mounting panel. A welding nut is fixedly installed on the inner side of the rectangular recess, and the second flange is wrapped around the crossbeam and the vertical beam and welded together, thereby improving the connection strength of the crossbeam and the vertical beam.

[0011] Preferably, the fixing plate includes a fixing panel that is fixedly connected to the four-quarter seat frame or the six-quarter seat frame. The lower end of the fixing panel is provided with an elongated opening, and the bottom of the fixing panel is provided with a curved portion extending forward. Reinforcing ribs are arranged side by side on the curved portion. The fixing panel is used to weld together with the four-quarter seat frame or the six-quarter seat frame. The elongated opening is located at the connection between the crossbeam and the vertical beam, which facilitates welding and increases the connection strength. The reinforcing ribs increase the structural strength of the curved portion.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Utilizing a square tube frame structure, the seat boasts higher strength. Compared to traditional round tubes or other shapes, square tubes exhibit higher bending and torsional section moduli, better resisting external impacts. The addition of vertical beams further enhances the six-part seat frame's resistance to lateral impacts. Welded connections ensure robust integration between components, forming a high-strength overall frame. Transverse reinforcing bars increase backrest support, while connecting plates expand the support area, distributing pressure and improving ride comfort. This design addresses the issues of existing rear seat backrest frames, which often employ round tube structures, leading to deformation and even breakage, and exhibiting low connection strength when interfacing with other components. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 These are three-dimensional structural diagrams of the present invention from different angles;

[0016] Figure 3 This is a top view of the present invention;

[0017] Figure 4 This is a three-dimensional structural diagram of the docking part of this utility model;

[0018] Figure 5 These are three-dimensional structural views of the docking part of this utility model from different angles;

[0019] Figure 6 This is a three-dimensional structural diagram of the connecting bracket of this utility model;

[0020] Figure 7 This is an exploded view of the connecting bracket of this utility model;

[0021] Figure 8 This is a three-dimensional structural diagram of the fixing plate of this utility model.

[0022] Figure label:

[0023] 1. Four-quarter seat frame; 2. Six-quarter seat frame; 3. Joint; 31. First flange; 32. Groove; 33. Joint opening; 34. Buckle; 4. Fixing plate; 41. Fixing panel; 42. Long strip opening; 43. Bending part; 44. Reinforcing rib; 5. Backrest lock mounting bracket; 6. Connecting bracket; 61. Mounting panel; 62. Rectangular recess; 63. Second flange; 64. Welded nut; 7. Bracket; 8. Headrest insert sleeve; 9. Fixing bracket; 10. Mounting plate; 11. Mounting plate; 12. Horizontal reinforcing bar; 13. Connecting plate. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] like Figure 1-8 As shown, this utility model addresses the problems of existing rear seat backrest frames, which often use round tube structures and are prone to deformation or even breakage, and have low connection strength when connected to other components. The present invention provides the following technical solution: A high-strength automotive rear seat backrest frame structure, comprising a four-part seat frame 1 and a six-part seat frame 2 arranged side-by-side, both of which are rectangular frame structures; the lower ends of both the four-part seat frame 1 and the six-part seat frame 2 are provided with parallel connecting parts 3; the upper left of the four-part seat frame 1 and the upper right of the six-part seat frame 2 are each provided with a fixing plate 4; a backrest lock mounting bracket 5 is provided on the lower side of the fixing plate 4; the lower ends of the four-part seat frame 1 and the six-part seat frame 2 are respectively connected with connecting parts 3. Each side is provided with a lower connecting bracket 6. Multiple brackets 7 are fixedly installed side by side at the upper middle of the four-part seat frame 1 and the six-part seat frame 2. Headrest insert sleeves 8 are welded onto the brackets 7. A fixing frame 9 is provided at the upper middle of the six-part seat frame 2. Both the four-part seat frame 1 and the six-part seat frame 2 include two horizontally arranged crossbeams and two vertically arranged vertical beams. The crossbeams and vertical beams are made of square tubes and welded together to form a high-strength overall frame. The fixing frame 9 is used for the installation of the seat belt of the middle passenger in the rear seat backrest. It is connected to the child seat through the docking part 3. A backrest lock is provided on the backrest lock mounting bracket 5. The backrest lock is connected to the vehicle body. The seat belts of the passengers on both sides of the rear seat are installed on the fixing plate 4. The headrest insert sleeve 8 is used to install the headrest.

[0026] In this embodiment, as Figure 1 As shown, two vertical beams 10 are arranged side by side in the middle of the six-part seat frame 2 to increase the structural strength of the six-part seat frame 2.

[0027] In this embodiment, as Figure 1 As shown, mounting plates 11 are fixedly connected between the vertical beams 10, and the mounting plates 11 are used to install the seat belt retractors.

[0028] In this embodiment, as Figure 1 As shown, multiple transverse reinforcing rods 12 are horizontally fixed on the four-part seat frame 1 and the six-part seat frame 2. The transverse reinforcing rods 12 are made of steel pipes. The transverse reinforcing rods 12 increase the support of the backrest, and the support is better and more comfortable.

[0029] In this embodiment, as Figure 1As shown, a connecting plate 13 is fixedly installed on the transverse reinforcing rod 12. The connecting plate 13 can increase the support area and strengthen the two transverse reinforcing rods 12, thereby further improving the support force.

[0030] In this embodiment, as Figure 4-5 As shown, the four edges of the docking part 3 are fixedly provided with a first flange 31, the lower end of the docking part 3 is provided with a groove 32, the upper end of the docking part 3 is provided with a docking opening 33, the bottom of the groove 32 is fixed with a buckle 34, the buckle 34 is U-shaped, and the docking opening 33 fits against the side and bottom of the crossbeam and is welded together.

[0031] In this embodiment, as Figure 6-7 As shown, the lower connecting bracket 6 includes a mounting panel 61, a rectangular recess 62 at the lower end of the mounting panel 61, a second flange 63 extending forward at the edge of the mounting panel 61, a welding nut 64 fixedly provided on the inner side of the rectangular recess 62, and the second flange 63 wraps around the crossbeam and the vertical beam and is welded together to improve the connection strength of the crossbeam and the vertical beam.

[0032] In this embodiment, as Figure 8 As shown, the fixing plate 4 includes a fixing panel 41 that is fixedly connected to the four-part seat frame 1 or the six-part seat frame 2. The lower end of the fixing panel 41 is provided with an elongated opening 42. The bottom of the fixing panel 41 is provided with a curved portion 43 extending forward. Reinforcing ribs 44 are arranged side by side on the curved portion 43. The fixing panel 41 is used to weld together with the four-part seat frame 1 or the six-part seat frame 2. The elongated opening 42 is located at the connection between the crossbeam and the vertical beam, which facilitates welding and increases the connection strength. The reinforcing ribs 44 increase the structural strength of the curved portion 43.

[0033] In this embodiment, as Figure 1As shown, prepare the crossbeams and vertical beams of the four-part seat frame 1 and the six-part seat frame 2, as well as two vertical beams 10. The vertical beams and the two vertical beams 10 are the same length and are located on both sides between the two crossbeams. Weld the crossbeams, vertical beams, and vertical beams 10 together. In the four-part seat frame 1, weld three transverse reinforcing bars 12. In the six-part seat frame 2, weld three transverse reinforcing bars 12 between the vertical beams and the vertical beams 10 respectively. The transverse reinforcing bars 12 are U-shaped to increase the welding area. Weld the connecting plate 13 to the two upper transverse reinforcing bars 12. The edge of the mounting plate 11 is provided with a flange for welding to the vertical beams 10. The flange is provided with a reinforcing concave to increase the connection strength of the mounting plate 11. Weld the headrest insert sleeve 8 to the bracket 7 and to the upper part of the four-part seat frame 1. Two brackets 7 are welded to the beam, four brackets 7 are welded to the upper crossbeam of the six-part seat frame 2, a fixing bracket 9 is welded to the upper crossbeam of the six-part seat frame 2 above the mounting plate 11, mounting brackets 5 are welded to the left vertical beam of the four-part seat frame 1 and the right vertical beam of the six-part seat frame 2, a through hole is provided on the rectangular recess 62 of the lower connecting bracket 6, and a welding nut 64 is welded to the inner side of the rectangular recess 62 at the corresponding position of the through hole. A clearance hole is opened on the crossbeam to avoid the welding nut 64, and the lower connecting bracket 6 is welded to the connection between the vertical beam and the crossbeam to increase the connection strength of the bottom frame. A butt joint 3 is welded to the lower end of the four-part seat frame 1 and the six-part seat frame 2. The butt joint opening 33 of the butt joint 3 fits with the side and bottom of the crossbeam and is welded together.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A high-strength automotive rear seat backrest frame structure, characterized in that, include: The four-part seat frame (1) and the six-part seat frame (2) are arranged side by side, and both the four-part seat frame (1) and the six-part seat frame (2) are rectangular frame structures; The lower ends of the four-part seat frame (1) and the six-part seat frame (2) are provided with a docking part (3) side by side. The upper left part of the four-part seat frame (1) and the upper right part of the six-part seat frame (2) are provided with a fixing plate (4). The lower side of the fixing plate (4) is provided with a backrest lock mounting bracket (5). The lower sides of the four-part seat frame (1) and the six-part seat frame (2) are provided with a lower connecting bracket (6). The upper middle part of the four-part seat frame (1) and the six-part seat frame (2) are provided with multiple brackets (7) side by side. The brackets (7) are welded with headrest insert sleeves (8). A fixing frame (9) is provided on the upper middle part of the six-part seat frame (2).

2. The high-strength automotive rear bench seat backrest framework structure according to claim 1, characterized by: Two vertical beams (10) are arranged side by side in the middle of the six-part seat frame (2).

3. The high-strength automotive rear seat back frame structure according to claim 2, characterized in that: Mounting plates (11) are fixedly connected between the vertical beams (10).

4. The high-strength automotive rear bench seat backrest framework structure according to claim 1, characterized by: Multiple transverse reinforcing rods (12) are horizontally fixed on the four-part seat frame (1) and the six-part seat frame (2).

5. The high-strength automotive rear bench seat backrest framework structure according to claim 4, characterized by: A connecting plate (13) is fixedly installed on the transverse reinforcing rod (12).

6. The high-strength automotive rear bench seat backrest framework structure according to claim 1, characterized by: The four sides of the docking part (3) are fixedly provided with a first flange (31), the lower end of the docking part (3) is provided with a groove (32), the upper end of the docking part (3) is provided with a docking opening (33), and a buckle (34) is fixed at the bottom of the groove (32), the buckle (34) being U-shaped.

7. The high-strength automotive rear bench seat backrest framework structure according to claim 1, characterized by: The lower connecting bracket (6) includes a mounting panel (61), the lower end of which is provided with a rectangular recess (62), and the edge of the mounting panel (61) is provided with a forward-extending second flange (63).

8. The high-strength automotive rear bench seat backrest framework structure according to claim 1, characterized by: The fixing plate (4) includes a fixing panel (41) that is fixedly connected to the four-part seat frame (1) or the six-part seat frame (2). The lower end of the fixing panel (41) is provided with a long strip opening (42). The bottom of the fixing panel (41) is provided with a curved part (43) extending forward. The curved part (43) is provided with reinforcing ribs (44) arranged side by side.

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