Front seat beam assembly structure

Abstract

The utility model discloses a front seat cross beam assembly structure which comprises a front seat cross beam body. The front seat cross beam left connecting plate and the front seat cross beam right connecting plate are connected to the two ends of the front seat cross beam body in the length direction respectively. The left end of the front seat cross beam body is connected with the left threshold body through a front seat cross beam left connecting plate, and the right end of the front seat cross beam body is connected with the right threshold body through a front seat cross beam right connecting plate; the middle of the front seat beam body crosses the middle channel body and is connected with the middle channel body through a welding spot. According to the front seat beam assembly structure, the structure is optimized, so that the front seat beam assembly structure is through left and right so as to effectively transmit collision force, and the passenger protection requirement of automobile side column collision is met; a frame structure is formed by the front floor, the left threshold, the right threshold and the middle channel, and the bending mode of the front floor is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a front seat crossbeam assembly structure. Background Art

[0002] Existing front seat crossbar assembly (such as Figure 1 The front seat crossbeam assembly is mainly composed of a left front seat crossbeam mounting bracket (1), a front seat crossbeam (2) and a right front seat crossbeam mounting bracket (3); one side of the front seat crossbeam assembly is connected to the door sill assembly, and the other side is connected to the middle channel assembly. Two sets are used for a single vehicle, and the front seat crossbeam structure is disconnected at the middle channel.

[0003] The structure in the prior art has the following defects:

[0004] 1. The front seat crossbeam structure is disconnected at the center channel. When the side column collides, the collision force cannot be effectively transmitted and is easily bent at the center channel;

[0005] 2. The front seat crossbeam structure is not connected from left to right, and the front floor bending mode does not meet the requirements;

[0006] 3. The front seat crossbeam assembly is not strong enough, resulting in the seat mounting point stiffness not meeting the requirements;

[0007] 4. The connection between the front seat crossbeam assembly and the center channel cannot be spot welded using a spot welding machine and can only be welded using CO2 shielded welding, which results in poor welding quality and low production efficiency.

[0008] Based on the above technical problems, technicians in this field are in urgent need of developing a front seat crossbeam assembly structure. Utility Model Content

[0009] The utility model aims to provide a front seat crossbeam assembly structure, which is optimized to make the front seat crossbeam assembly structure penetrate left and right to effectively transmit collision force, and meet the occupant protection requirements of automobile side column collision.

[0010] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0011] The utility model provides a front seat crossbeam assembly structure, which comprises:

[0012] front seat cross member body; and

[0013] A front seat cross beam left connecting plate and a front seat cross beam right connecting plate respectively connected to two ends of the front seat cross beam body in the length direction;

[0014] The left end of the front seat cross beam body is connected to the left side door sill body through the left front seat cross beam connecting plate, and the right end of the front seat cross beam body is connected to the right side door sill body through the right front seat cross beam connecting plate;

[0015] The middle part of the front seat cross beam body spans the middle channel body and is connected to the middle channel body through welding points.

[0016] Furthermore, the middle portion of the front seat cross beam body is raised upward to form a U-shaped notch at its lower portion to avoid the middle channel body.

[0017] Furthermore, the front seat crossbeam body is made of B1500HS thermoformed material with a thickness of 1.5 mm, the yield strength of the front seat crossbeam body is 950 MPa~1250 MPa, and the tensile strength of the front seat crossbeam body is 1300 MPa~1650 MPa.

[0018] Furthermore, the material of the left connecting plate of the front seat cross beam and the right connecting plate of the front seat cross beam are both HC340 / 590DP, and the thickness of the left connecting plate of the front seat cross beam and the right connecting plate of the front seat cross beam are both 1.6 mm.

[0019] Further, the inner cavity of the front seat crossbeam body is provided with a reinforcing plate;

[0020] The reinforcing plate is divided into:

[0021] A front seat cross beam left reinforcement plate is arranged in the left inner cavity of the front seat cross beam body, and a front seat cross beam right reinforcement plate is arranged in the right inner cavity of the front seat cross beam body.

[0022] Furthermore, the positions where the left reinforcement plate of the front seat cross beam and the right reinforcement plate of the front seat cross beam cooperate with the U-shaped notch are bent and extended upward;

[0023] Both sides of the front seat cross beam left reinforcement plate and the front seat cross beam right reinforcement plate in the width direction extend outward and pass over the joint position of the connecting plate on the corresponding side and the front seat cross beam body.

[0024] Furthermore, the material of the left reinforcement plate of the front seat cross beam and the right reinforcement plate of the front seat cross beam is HC340 / 590DP, and the thickness of the left reinforcement plate of the front seat cross beam and the right reinforcement plate of the front seat cross beam is 1.5 mm.

[0025] Furthermore, the lower part of the front seat cross beam assembly structure is respectively connected to the left side body of the front floor and the right side body of the front floor of the vehicle body through welding points.

[0026] In the above technical solution, the utility model provides a front seat crossbeam assembly structure, which has the following beneficial effects:

[0027] The front seat crossbeam assembly structure of the utility model optimizes the structure so that it penetrates left and right to effectively transmit collision force, meeting the occupant protection requirements of automobile side column collision; optimizes the connection method, forms a frame structure with left and right door sills and the center channel, and effectively improves the bending mode of the front floor.

[0028] The front seat crossbeam assembly structure of the utility model improves the structural strength, so that the rigidity of the seat installation point is ≥1500N / mm, meeting the design requirements.

[0029] The connection between the front seat crossbeam assembly structure and the central channel of the utility model is convenient to weld and can be welded by a spot welding machine, thereby improving welding quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a structural schematic diagram of a front seat crossbeam assembly in the prior art;

[0032] Figure 2 It is a front view of the front seat cross beam assembly structure in use state disclosed in the embodiment of the utility model;

[0033] Figure 3 A top view of the front seat cross beam assembly structure in use state disclosed in the embodiment of the utility model;

[0034] Figure 4 It is a front view of the front seat cross beam assembly structure disclosed in the embodiment of the utility model;

[0035] Figure 5 A top view of the front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0036] Figure 6 A side view of the front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0037] Figure 7 A front view of a front seat cross beam body of a front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0038] Figure 8 A top view of a front seat cross beam body of a front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0039] Fig. 9A side view of a front seat cross beam body of the front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0040] Fig.10 It is a front view of a left reinforcement plate of a front seat cross beam of a front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0041] Fig.11 A top view of a left reinforcement plate of a front seat cross beam of a front seat cross beam assembly structure disclosed in an embodiment of the utility model;

[0042] Fig.12 It is a side view of the left reinforcement plate of the front seat cross beam of the front seat cross beam assembly structure disclosed in the embodiment of the utility model.

[0043] Description of reference numerals:

[0044] 4. Left door sill body; 5. Center channel body; 6. Right door sill body; 7. Front seat crossbeam body; 8. Front seat crossbeam left connecting plate; 9. Front seat crossbeam right connecting plate; 10. Front floor left body; 11. Front floor right body; 12. Front seat crossbeam left reinforcement plate; 13. Front seat crossbeam right reinforcement plate.

[0045] 701. U-shaped notch. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0047] See also Figures 2 to 12 As shown;

[0048] A front seat crossbeam assembly structure of this embodiment includes:

[0049] Front seat cross beam body 7; and

[0050] A front seat cross beam left connecting plate 8 and a front seat cross beam right connecting plate 9 respectively connected to both ends of the front seat cross beam body 7 in the length direction;

[0051] The left end of the front seat cross beam body 7 is connected to the left side door sill body 4 through the front seat cross beam left connecting plate 8, and the right end of the front seat cross beam body 7 is connected to the right side door sill body 6 through the front seat cross beam right connecting plate 9;

[0052] The middle part of the front seat cross beam body 7 spans across the middle channel body 5 and is connected to the middle channel body 5 through welding points.

[0053] Specifically, the present embodiment discloses a novel front seat crossbeam assembly structure, the two ends of which are respectively connected to the left side door sill body 4 and the right side door sill body 6, and the middle part spans the middle channel body 5 and is connected to the middle channel body 5 through welding points; and the lower part of the front seat crossbeam assembly structure of the present embodiment is connected to the left side body 10 of the front floor and the right side body 11 of the front floor through welding points, so that the front seat crossbeam assembly, the middle channel body 5, the left and right side door sill bodies, and the left and right side front floor bodies are connected as a whole to form a left-right through-frame structure.

[0054] Preferably, the middle part of the front seat cross beam body 7 of this embodiment is convex upwards and forms a U-shaped notch 701 at its lower part to avoid the middle channel body. In order to be able to cross and avoid the middle channel body 5, the middle part of the front seat cross beam body 7 of this embodiment is bent and extended upward to form a U-shaped notch 701.

[0055] The front seat crossbeam assembly structure of this embodiment mainly includes a front seat crossbeam body 7, a front seat crossbeam left connecting plate 8 and a front seat crossbeam right connecting plate 9 at both ends, and a front seat crossbeam left reinforcing plate 12 and a front seat crossbeam right reinforcing plate 13 arranged in the inner cavity of the front seat crossbeam body 7.

[0056] Among them, the front seat cross beam body 7 of this embodiment is made of B1500HS thermoformed material with a thickness of 1.5mm, the yield strength of the front seat cross beam body 7 is 950Mpa~1250Mpa, and the tensile strength of the front seat cross beam body 7 is 1300Mpa~1650Mpa.

[0057] Among them, the material of the left connecting plate 8 of the front seat cross beam and the right connecting plate 9 of the front seat cross beam in this embodiment is HC340 / 590DP, and the thickness of the left connecting plate 8 of the front seat cross beam and the right connecting plate 9 of the front seat cross beam is 1.6 mm.

[0058] The two ends of the front seat cross beam body 7 of this embodiment are respectively connected with connecting plates, namely the above-mentioned front seat cross beam left connecting plate 8 and the front seat cross beam right connecting plate 9. This design can facilitate the front seat cross beam body 7 and the left and right door sill bodies to be connected as one through welding points. The double-layer plate structure can improve the stiffness at the seat mounting point. The mounting point stiffness is about 1800N.mm, which meets the design requirements.

[0059] In order to improve the structural strength, a reinforcing plate is provided in the inner cavity of the front seat cross beam body 7 of the present embodiment;

[0060] The reinforcement plates are divided into:

[0061] A front seat cross beam left reinforcement plate 12 is arranged in the left inner cavity of the front seat cross beam body 7 and a front seat cross beam right reinforcement plate 13 is arranged in the right inner cavity of the front seat cross beam body 7 .

[0062] In addition, the left reinforcing plate 12 of the front seat cross beam and the right reinforcing plate 13 of the front seat cross beam of the present embodiment are bent and extended upward at the positions matching with the U-shaped notch 701;

[0063] Both sides of the front seat cross beam left reinforcement plate 12 and the front seat cross beam right reinforcement plate 13 in the width direction extend outward and cross over the joint position of the connecting plate on the corresponding side and the front seat cross beam body 7 .

[0064] The left reinforcement plate 12 and the right reinforcement plate 13 of the front seat crossbeam of the present embodiment are arranged in the inner cavity of the front seat crossbeam body 7. The reinforcement plate Y passes over the joint between the connecting plate and the front seat crossbeam body 7 to the outside and passes over the middle channel body 5 to the inside, so that a layer of reinforcement structure is added in the middle of the front seat crossbeam assembly while the Z-direction height remains unchanged, and its overall strength is improved by about 40%.

[0065] Preferably, the material of the left front seat cross beam reinforcement plate 12 and the right front seat cross beam reinforcement plate 13 of the present embodiment is HC340 / 590DP, and the thickness of the left front seat cross beam reinforcement plate 12 and the right front seat cross beam reinforcement plate 13 is 1.5 mm.

[0066] The lower part of the front seat cross beam assembly structure of the present embodiment is respectively connected to the left side body 10 and the right side body 11 of the front floor of the vehicle body through welding points.

[0067] In this embodiment, a U-shaped notch 701 is provided in the middle of the front seat cross beam body 7 to avoid the middle channel body 5. It is connected to the middle channel body 5 through welding edges on both sides, which meets the use requirements of spot welding machine operation and realizes connecting the front seat cross beam body 7 and the middle channel body 5 together through welding points, thereby improving the welding quality and the production efficiency.

[0068] The front seat crossbeam assembly of this embodiment is strengthened in structure, and is effectively connected to the left side door sill body 4 at the outside, the middle part to the middle channel body 5 at the middle part, and the front floor body at the bottom, so that the front seat crossbeam assembly forms an integral frame structure that runs through the left and right sides of the front floor assembly. When the side column collides, the collision force can be effectively transmitted and dispersed through the force transmission channel, which can effectively protect the occupants. This structure also significantly improves the bending mode of the front floor, and the bending mode reaches about 53Hz, which meets the design requirements.

[0069] In the above technical solution, the utility model provides a front seat crossbeam assembly structure, which has the following beneficial effects:

[0070] The front seat crossbeam assembly structure of the utility model optimizes the structure so that it penetrates left and right to effectively transmit collision force, meeting the occupant protection requirements of automobile side column collision; optimizes the connection method, forms a frame structure with left and right door sills and the center channel, and effectively improves the bending mode of the front floor.

[0071] The front seat crossbeam assembly structure of the utility model improves the structural strength, so that the rigidity of the seat installation point is ≥1500N / mm, meeting the design requirements.

[0072] The connection between the front seat crossbeam assembly structure and the central channel of the utility model is convenient to weld and can be welded by a spot welding machine, thereby improving welding quality and production efficiency.

[0073] The front seat crossbeam body of the utility model adopts high-strength steel hot-formed material B1500HS, and adds reinforcement plates in the left and right side walls, so that the structure has no obvious bending phenomenon when the car side column collides, and the deformation is within an acceptable range, meeting the occupant protection requirements of the car side column collision.

[0074] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A front seat crossbeam assembly structure, characterized in that: The structure includes: A front seat crossbeam body (7); and A front seat cross beam left connecting plate (8) and a front seat cross beam right connecting plate (9) respectively connected to two ends of the front seat cross beam body (7) in the length direction; The left end of the front seat cross beam body (7) is connected to the left side door sill body (4) via the left front seat cross beam connecting plate (8), and the right end of the front seat cross beam body (7) is connected to the right side door sill body (6) via the right front seat cross beam connecting plate (9); The middle portion of the front seat crossbeam body (7) spans across the middle channel body (5) and is connected to the middle channel body (5) via a welding point.

2. The front seat cross beam assembly structure according to claim 1, characterized in that: The middle portion of the front seat cross beam body (7) protrudes upwards, and a U-shaped notch is formed at its lower portion to avoid the middle channel body (5).

3. The front seat cross beam assembly structure according to claim 1, characterized in that: The front seat crossbeam body (7) is made of B1500HS thermoformed material with a thickness of 1.5 mm. The yield strength of the front seat crossbeam body (7) is 950 MPa to 1250 MPa, and the tensile strength of the front seat crossbeam body (7) is 1300 MPa to 1650 MPa.

4. A front seat cross beam assembly structure according to claim 1 or 3, characterized in that: The material of the left front seat cross beam connecting plate (8) and the right front seat cross beam connecting plate (9) are both HC340 / 590DP, and the thickness of the left front seat cross beam connecting plate (8) and the right front seat cross beam connecting plate (9) are both 1.6 mm.

5. The front seat cross beam assembly structure according to claim 2, characterized in that: The inner cavity of the front seat crossbeam body (7) is provided with a reinforcing plate; The reinforcing plate is divided into: A front seat cross beam left reinforcement plate (12) is arranged in the left inner cavity of the front seat cross beam body (7), and a front seat cross beam right reinforcement plate (13) is arranged in the right inner cavity of the front seat cross beam body (7).

6. The front seat cross beam assembly structure according to claim 5, characterized in that: The left reinforcing plate (12) of the front seat cross beam and the right reinforcing plate (13) of the front seat cross beam are bent and extended upward at positions where they cooperate with the U-shaped notch (701); Both sides of the front seat cross beam left reinforcement plate (12) and the front seat cross beam right reinforcement plate (13) in the width direction extend outwards and pass over the joint position of the connecting plate on the corresponding side and the front seat cross beam body (7).

7. The front seat cross beam assembly structure according to claim 6, characterized in that: The material of the front seat cross beam left reinforcement plate (12) and the front seat cross beam right reinforcement plate (13) is HC340 / 590DP, and the thickness of the front seat cross beam left reinforcement plate (12) and the front seat cross beam right reinforcement plate (13) is 1.5 mm.

8. The front seat cross beam assembly structure according to claim 1, characterized in that: The lower part of the front seat crossbeam assembly structure is respectively connected to the left side body (10) of the front floor and the right side body (11) of the front floor of the vehicle body through welding points.

Images