Seat fixing structure for passenger car

Abstract

The utility model discloses a seat fixing structure for a passenger car, which belongs to the technical field of passenger car seat installation and comprises a first steel plate, a second steel plate, a third steel plate and a fourth steel plate which are sequentially connected, the first steel plate is perpendicular to the second steel plate, and the second steel plate and the third steel plate are overlapped in parallel. The third steel plate is perpendicular to the fourth steel plate; the first steel plate and the fourth steel plate are arranged on the same plane; the first steel plate, the second steel plate, the third steel plate and the fourth steel plate are of a T-shaped structure integrally formed in a rolling mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus seat installation, and in particular relates to a bus seat fixing structure. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] At present, in the bus manufacturing industry, seat fixing angle steel serves as a rigid component on both sides of the vehicle body, playing many roles such as fixing seats, strengthening the rigidity of the side frame, and sealing. It is an important component when installing and fixing bus seats.

[0004] Conventional technology typically uses shearing machines to cut boxboard, then uses a press brake to initially process it into angle steel. Finally, a resistance spot welder welds the angle steel together to create the seat fixing angle steel. This entire process requires three workstations and two transfers, making it cumbersome and difficult to ensure weld quality. Furthermore, quality issues can be difficult to detect after installation, leading to rework.

[0005] In addition, when the current seat fixing angle steel is used to connect the vehicle body frame and the seat frame, the connection structure is prone to breakage during use, so the structure of the connection part needs to be strengthened. Utility Model Content

[0006] The purpose of the utility model is to provide a seat fixing structure for a bus, which adopts a structure formed by rolling an integral steel plate to solve the problems of low processing efficiency and poor quality of existing seat fixing angle steels, and at the same time makes the installation and fixation of bus seats more convenient. By arranging a double-layer steel plate structure at the connection between the body frame and the seat frame, the stability of the connection between the seat and the frame is guaranteed.

[0007] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0008] In the first aspect, an embodiment of the present invention provides a seat fixing structure for a passenger car, comprising a first steel plate, a second steel plate, a third steel plate and a fourth steel plate connected in sequence, the first steel plate and the second steel plate are arranged perpendicular to each other, the second steel plate and the third steel plate are arranged parallel to each other and overlapped, and the third steel plate and the fourth steel plate are arranged perpendicular to each other; the first steel plate and the fourth steel plate are arranged in the same plane; the first steel plate, the second steel plate, the third steel plate and the fourth steel plate are an integrally roll-formed T-shaped structure.

[0009] As a further technical solution, the first steel plate and the fourth steel plate are connected to the bus side frame, and the superimposed second steel plate and the third steel plate are connected to the seat frame.

[0010] As a further technical solution, the stacked second steel plate and the third steel plate are provided with an arc structure at one end facing the interior of the vehicle, and a gap at the other end away from the interior of the vehicle.

[0011] As a further technical solution, the first steel plate and the fourth steel plate are of the same length.

[0012] As a further technical solution, the lengths of the second steel plate and the third steel plate are greater than the lengths of the first steel plate and the fourth steel plate.

[0013] As a further technical solution, the overlapping gap between the second steel plate and the third steel plate is less than or equal to 1 mm.

[0014] As a further technical solution, the first steel plate and the fourth steel plate are fully welded to the passenger car side frame, and the second steel plate and the third steel plate are horizontally suspended toward the interior of the car.

[0015] As a further technical solution, the stacked second steel plate and the third steel plate are provided with a plurality of through holes along the thickness direction, and bolts are provided in the through holes. The bolts pass through the through holes to connect the stacked second steel plate and the third steel plate to the seat frame.

[0016] As a further technical solution, the seat frame includes a seat fixing plate, and the seat fixing plate is connected to the superimposed second steel plate and third steel plate by bolts;

[0017] The stacked second steel plate, the third steel plate and the seat fixing plate are arranged parallel to each other, and the bottom plane of the seat fixing plate is arranged in contact with the top plane of the second steel plate.

[0018] As a further technical solution, the seat fixing structure is made of low-carbon steel.

[0019] The beneficial effects of the above embodiments of the present invention are as follows:

[0020] The utility model provides a passenger car seat fixing structure, which adopts a steel plate roll-formed integral structure, solves the problems of low processing efficiency and poor quality of existing seat fixing angle steel, and makes the installation and fixing of passenger car seats more convenient. By arranging a double-layer steel plate structure at the connection between the vehicle body frame and the seat frame, the stability of the connection between the seat and the frame is ensured.

[0021] The seat has a simple fixing structure and stable molding. It can be quickly cut through a cutting mold and can be cut into different lengths according to actual usage requirements. It can adaptably connect the body frame and the seat frame, and has a high raw material utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 This is an overall schematic diagram of a passenger car seat fixing structure provided by Example 1 of the present utility model;

[0024] Figure 2a This is a schematic diagram of the molding process of a passenger car seat fixing structure provided by Example 1 of the present utility model. Figure 1 ;

[0025] Figure 2b This is a second schematic diagram of the molding process of a passenger car seat fixing structure provided by Example 1 of the present utility model;

[0026] Figure 3 This is a schematic diagram of the welding position of the seat fixing structure and the side frame provided in Example 1 of the present utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the seat fixing structure provided by Example 1 of the present utility model for fixing to a bus seat.

[0028] The diagram is for illustrative purposes only;

[0029] Among them, 1. seat fixing structure; 101. first steel plate; 102. second steel plate; 103. third steel plate; 104. fourth steel plate; 2. bus side frame; 3. seat; 4. seat frame; 5. seat support frame. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Example 1

[0032] In a typical embodiment of the present invention, Figure 1 As shown, a seat fixing structure 1 for buses is provided, which adopts a structure formed by rolling one-piece steel plates to solve the problems of low processing efficiency and poor quality of the existing seat 3 fixing angle steel, and at the same time makes the installation and fixation of the bus seat 3 more convenient. By arranging a double-layer steel plate structure at the connection between the vehicle body frame and the seat frame 4, the stability of the connection between the seat 3 and the frame is guaranteed.

[0033] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0034] In the first aspect, an embodiment of the present invention provides a seat fixing structure 1 for a bus, comprising a first steel plate 101, a second steel plate 102, a third steel plate 103 and a fourth steel plate 104 connected in sequence, the first steel plate 101 and the second steel plate 102 are arranged perpendicular to each other, the second steel plate 102 and the third steel plate 103 are arranged parallel to each other and superimposed, and the third steel plate 103 and the fourth steel plate 104 are arranged perpendicular to each other; the first steel plate 101 and the fourth steel plate 104 are arranged in the same plane; the first steel plate 101, the second steel plate 102, the third steel plate 103 and the fourth steel plate 104 are an integral roll-formed T-shaped structure.

[0035] In this arrangement, the first steel plate 101 and the fourth steel plate 104 form a single-layer steel plate structure, and the second steel plate 102 and the third steel plate 103 are stacked parallel to each other to form a double-layer steel plate structure. The double-layer steel plate structure is used for the connection structure between the vehicle body frame and the seat frame 4, thereby enhancing the strength and stability of the structure.

[0036] The traditional processing method of seat fixing angle steel is through shearing, bending and welding, which is cumbersome and inefficient. This application uses the rolling method to solve the cumbersome production process problem, such as Figure 2a and Figure 2b As shown, the raw materials are directly leveled using a roll of the right width, and then sent to the seat fixed angle steel rolling unit for forming after passing through the roll leveling unit. Finally, the formed seat fixed angle steel is cut into the required length to simplify the processing steps and improve the processing efficiency.

[0037] Furthermore, the first and fourth steel plates 101, 104 are connected to the bus side frame 2, and the stacked second and third steel plates 102, 103 are connected to the seat frame 4. The stacked second and third steel plates 102, 103 have an arcuate structure on the end facing the interior of the vehicle, and a gap on the end facing away from the interior. The first and fourth steel plates 101, 104 are the same length. The length of the second and third steel plates 102, 103 is greater than the length of the first and fourth steel plates 101, 104. The gap between the stacked second and third steel plates 102, 103 is less than or equal to 1 mm.

[0038] In this embodiment, the thickness of the first steel plate 101, the second steel plate 102, the third steel plate 103 and the fourth steel plate 104 is 2 mm, the upper and lower widths of the single-layer steel plate structure formed by the first steel plate 101 and the fourth steel plate 104 are 30±1 mm, and the left and right widths of the double-layer steel plate structure formed by the second steel plate 102 and the third steel plate 103 are 45±1 mm.

[0039] Further, such as Figure 3As shown, the first and fourth steel plates 101, 104 are fully welded to the bus side frame 2, while the second and third steel plates 102, 103 are suspended horizontally, facing the interior of the vehicle. The first and fourth steel plates 101, 104 are secured to the vehicle body frame by welding, providing sufficient strength to support the seat frame 4 over the double-layer steel plate structure formed by the second and third steel plates 102, 103 without causing deformation.

[0040] The seat mounting structure 1 provided in this embodiment is welded directly to the inside of the bus side frame 2. It is arranged horizontally and positioned at a fixed distance from the bus chassis floor to ensure the straightness of the seat 3 after installation. The bus chassis floor is located at the bottom of the vehicle interior and serves as the surface for passengers to stand and walk on. The bus side frame is formed into an arc shape with a convex center and concave upper and lower ends, ensuring the overall bus structure is wide at the bottom and narrow at the top, creating a stable structure.

[0041] In addition, the seat fixing structure 1 has supports at the front and rear ends of the side frame position to improve stability. The first steel plate 101 and the fourth steel plate 104 are directly welded to the inner side of the bus side frame 2, and the contact positions are fully welded, while the docking gap formed by the second steel plate 102 and the third steel plate 103 does not require welding.

[0042] Furthermore, the stacked second steel plate 102 and the third steel plate 103 are provided with a plurality of through holes along the thickness direction, and bolts are provided in the through holes. The bolts pass through the through holes to connect the stacked second steel plate 102 and the third steel plate 103 to the seat frame 4.

[0043] In this embodiment, the seat fixing structure 1 is roll-formed from a whole piece of steel plate to form a combined structure of a first steel plate 101, a second steel plate 102, a third steel plate 103 and a fourth steel plate 104. The steel plates do not crack during the forming process, and the overall bending strength of the final forming effect is increased. At the same time, holes are opened in the stacked second steel plate 102 and the third steel plate 103, and the hole size can be 12.5 mm to facilitate connection with M12 bolts. In other embodiments of the present invention, the hole size and the bolts used can be adaptively selected according to actual needs.

[0044] Furthermore, the seat frame 4 includes a seat fixing plate, which is connected to the superimposed second steel plate 102 and third steel plate 103 by bolts; the superimposed second steel plate 102, third steel plate 103 and seat 3 fixing plate are arranged parallel to each other, and the bottom plane of the seat fixing plate is arranged to fit the top plane of the second steel plate 102.

[0045] In this embodiment, if Figure 4 As shown, the side of the vehicle seat 3 close to the vehicle body side frame is fixed to the seat fixing structure 1 with bolts, and each seat side fixing point is fastened with two bolts.

[0046] Furthermore, the first steel plate 101, the second steel plate 102, the third steel plate 103, and the fourth steel plate 104 are made of low-carbon steel. In this embodiment, the first steel plate 101, the second steel plate 102, the third steel plate 103, and the fourth steel plate 104 are made of Q235 steel. Firstly, they have good processing properties, making subsequent drilling easier and more efficient; secondly, they offer low cost. In other embodiments of the present invention, the steel plate material can be upgraded to 510L or QSTE700, depending on strength requirements, to meet the quality requirements of buses under different conditions.

[0047] In this embodiment, the seat fixing structure 1 can be cut to different lengths according to actual needs, and multiple parts for connecting the vehicle body frame and the seat frame 4 can be set at the connection position to facilitate the installation of the seat 3 while ensuring the stability of the connection after installation. A seat support frame 5 is also provided at the bottom of the seat 3 to provide support for the seat.

[0048] The assembly method of a passenger car seat fixing structure 1 provided by the present invention is as follows:

[0049] First, suitable plates are selected for integral roll forming to form a T-shaped composite structure of a first steel plate 101, a second steel plate 102, a third steel plate 103, and a fourth steel plate 104;

[0050] According to actual needs, the seat fixing structure 1 is cut to a suitable length and number to connect the vehicle body frame and the seat frame 4;

[0051] The first steel plate 101 and the fourth steel plate 104 are welded to the inner surface of the vehicle body side frame, and the contact position with the vehicle body side frame is fully welded. The joint gap formed by the second steel plate 102 and the third steel plate 103 does not need to be welded, and the stacked second steel plate 102 and the third steel plate 103 are horizontally suspended toward the inside of the vehicle;

[0052] Through holes are opened in the upper and lower directions of the stacked second steel plate 102 and the third steel plate 103, and the hole spacing corresponds to the seat frame 4, and the stacked second steel plate 102 and the third steel plate 103 and the seat frame 4 are connected by bolts.

[0053] It should be noted that during the assembly process described above, the seat mounting structure 1 is positioned horizontally, at a predetermined distance from the vehicle underframe floor. If multiple seat mounting structures 1 are used for connection, the joints can be fully welded. Furthermore, the conventional seat frame 4 also has openings, these openings being oblong, allowing the openings in the seat mounting structure 1 to avoid the joint seam. Furthermore, before drilling the holes in the seat mounting structure 1, the holes must be marked to ensure accurate drilling.

[0054] The utility model provides a passenger car seat fixing structure 1, which adopts a structure formed by rolling steel plates into an integral shape, thereby solving the problems of low processing efficiency and poor quality of existing seat fixing angle steels, and making the installation and fixing of passenger car seats more convenient. By arranging a double-layer steel plate structure at the connection between the vehicle body frame and the seat frame 4, the stability of the connection between the seat and the frame is ensured;

[0055] The seat has a simple fixing structure and stable molding. It can be quickly cut through a cutting mold and can be cut into different lengths according to actual usage requirements. It can adaptably connect the body frame and the seat frame, and has a high raw material utilization rate.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A seat fixing structure for a passenger car, characterized in that: It includes a first steel plate, a second steel plate, a third steel plate and a fourth steel plate connected in sequence, the first steel plate and the second steel plate are arranged perpendicular to each other, the second steel plate and the third steel plate are arranged parallel to each other and overlapped, and the third steel plate and the fourth steel plate are arranged perpendicular to each other; the first steel plate and the fourth steel plate are arranged in the same plane; the first steel plate, the second steel plate, the third steel plate and the fourth steel plate are an integrally roll-formed T-shaped structure.

2. A passenger car seat fixing structure according to claim 1, characterized in that: The first steel plate and the fourth steel plate are connected to the bus side frame, and the superimposed second steel plate and the third steel plate are connected to the seat frame.

3. A passenger car seat fixing structure according to claim 1, characterized in that: The stacked second and third steel plates are provided with an arc structure at one end facing the interior of the vehicle, and a gap at one end away from the interior of the vehicle.

4. A passenger car seat fixing structure according to claim 1, characterized in that: The first steel plate and the fourth steel plate have the same length.

5. The passenger car seat fixing structure according to claim 1, characterized in that: The lengths of the second steel plate and the third steel plate are greater than the lengths of the first steel plate and the fourth steel plate.

6. A passenger car seat fixing structure according to claim 3, characterized in that: The overlapping gap between the second steel plate and the third steel plate is less than or equal to 1 mm.

7. A passenger car seat fixing structure according to claim 2, characterized in that: The first steel plate and the fourth steel plate are fully welded to the side frame of the bus, and the second steel plate and the third steel plate are horizontally suspended toward the interior of the bus.

8. The passenger car seat fixing structure according to claim 2, wherein: The stacked second steel plate and the third steel plate are provided with a plurality of through holes along the thickness direction. Bolts are provided in the through holes. The bolts pass through the through holes to connect the stacked second steel plate and the third steel plate to the seat frame.

9. A passenger car seat fixing structure according to claim 8, characterized in that: The seat frame includes a seat fixing plate, and the seat fixing plate is connected to the superimposed second steel plate and third steel plate by bolts; The stacked second steel plate, the third steel plate and the seat fixing plate are arranged parallel to each other, and the bottom plane of the seat fixing plate is arranged in contact with the top plane of the second steel plate.

10. The passenger car seat fixing structure according to claim 1, wherein: The first steel plate, the second steel plate, the third steel plate and the fourth steel plate are made of low-carbon steel.

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