Passenger car body structure and public bus

Abstract

The utility model provides a passenger car body structure and a public bus, and belongs to the technical field of public buses, the passenger car body structure comprises a front wall framework, a rear wall framework, a left side coaming, a right side coaming, a top cover, a front wall skin, a rear wall upper skin and a rear wall headlamp skin. The left side coaming, the right side coaming and the top cover are all carbon fiber composite boards. The front wall skin, the rear wall upper skin and the rear wall headlamp skin are all carbon fiber composite boards. The steel skins fixed on the front wall framework and the rear wall framework are replaced by the carbon fiber composite plates, so that compared with carbon fiber composite materials only used in the left side coaming, the right side coaming and the top cover, the weight of the body of the passenger car or the coach can be further reduced, the strength and the rigidity of the body are not affected, and meanwhile, the weight of the passenger car or the coach can be reduced. And the lightweight degree of the whole vehicle can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of public buses, in particular to a bus body structure and a public bus. Background Art

[0002] Traditional buses have a steel frame inside and a steel skin outside. The whole vehicle is a fully welded structure and is heavy. At the same time, since the whole vehicle is welded with steel, the corrosion resistance of the vehicle body is poor, and the top and side of the vehicle body are prone to rain and dust leakage.

[0003] In order to solve the above problems, a Chinese patent document with announcement number CN207241811U discloses a multifunctional integrated carbon fiber composite bus body, which is composed of a front enclosure frame, a rear enclosure frame, a left enclosure panel, a right enclosure panel, a floor and a roof cover, wherein the left enclosure panel, the right enclosure panel, the floor and the roof cover are all one-piece molded structures of foam sandwich glass fiber and carbon fiber mixed materials.

[0004] Although the above-mentioned carbon fiber composite bus body can reduce weight compared to traditional vehicles, it only uses carbon fiber composite materials in the left side panel, right side panel, floor and roof of the body, while the front and rear frames still need to be installed with traditional steel skins, and the lightweight degree of the entire vehicle still needs to be improved.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned defects of the prior art, the utility model provides a bus body structure and a public bus, aiming to solve the problem that the existing carbon fiber composite bus body only uses carbon fiber composite materials in the left side panel, right side panel, floor and roof of the body, resulting in the lightweight degree of the whole vehicle still needs to be improved.

[0007] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0008] A bus body structure, comprising a front enclosure frame, a rear enclosure frame, a left enclosure panel, a right enclosure panel and a top cover; the left enclosure panel, the right enclosure panel and the top cover are all carbon fiber composite panels; and further comprising:

[0009] A cowl skin, wherein the cowl skin is fixed to the outer side of the cowl frame,

[0010] The rear enclosure upper skin is fixed to the outer side of the rear enclosure frame.

[0011] The rear headlight skin is fixed to the outside of the rear frame and is located on both sides of the lower part of the rear upper skin;

[0012] Among them, the front panel skin, the rear panel upper panel skin and the rear headlight panel skin are all carbon fiber composite panels.

[0013] Furthermore, the bus body structure further comprises:

[0014] A rear hatch, the rear hatch being located below the upper skin of the rear enclosure and between the skins of the rear headlights,

[0015] A rear hatch door support frame, wherein the rear hatch door support frame is fixed to the back of the rear hatch door and is rotatably connected to the rear enclosure frame;

[0016] Wherein, the rear hatch is made of a carbon fiber composite panel or an aluminum alloy panel.

[0017] Furthermore, the bus body structure further comprises:

[0018] The rear bumper skin is fixed to the outside of the rear frame and is located below the rear hatch. The rear bumper skin is a carbon fiber composite plate or an aluminum alloy plate.

[0019] Furthermore, the two sides of the top cover are respectively connected to the upper part of the left side panel and the upper part of the right side panel through a plurality of first bolts; the front panel frame is respectively connected to the left side panel, the right side panel and the top cover through a plurality of second bolts; the rear panel frame is respectively connected to the left side panel, the right side panel and the top cover through a plurality of third bolts.

[0020] Furthermore, the front enclosure skin is bonded to the outer side of the front enclosure frame; the rear enclosure upper skin, rear enclosure headlight skin and rear enclosure bumper skin are all bonded to the outer side of the rear enclosure frame; and the rear hatch is bonded to the outer side of the rear hatch bracket.

[0021] Furthermore, the left side panel, the right side panel and the top cover are all filled with PVC boards.

[0022] Furthermore, the bus body structure further comprises:

[0023] A side panel frame, wherein the side panel frame is bonded to the outer sides of the left side panel and the right side panel;

[0024] The side enclosure skin is bonded to the outer side of the side enclosure frame.

[0025] Furthermore, the side enclosure frame is an aluminum alloy frame; and the side enclosure skin is an aluminum alloy plate or a PVC plate.

[0026] Furthermore, a plurality of glass installation openings are distributed on the upper portions of the left side panel and the right side panel; and the side panel skin located on the outer side of the upper portion of the side panel frame has a second opening for the glass to pass through.

[0027] The utility model also provides a public bus, comprising the above-mentioned bus body structure.

[0028] Beneficial effects:

[0029] The utility model provides a body structure suitable for public buses. By replacing the steel skins fixed on the front and rear enclosure frames with carbon fiber composite panels, the body of a bus or a large coach can be further reduced in weight compared with using carbon fiber composite materials only in the left enclosure, the right enclosure and the top cover. The lightweight degree of the entire vehicle can be further improved without affecting the strength and rigidity of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the bus body structure Figure 1 .

[0031] Figure 2 yes Figure 1 Enlarged view of part A.

[0032] Figure 3 This is a schematic diagram of the bus body structure Figure 2 .

[0033] Figure 4 yes Figure 3 Magnified view of part B.

[0034] Figure 5 yes Figure 3 Magnified view of part C.

[0035] Figure 6 This is a schematic diagram of the bus body structure Figure 3 .

[0036] Figure 7 yes Figure 6 Enlarged view of part D.

[0037] Figure 8 It is a cross-sectional view of the bus body in the vertical direction.

[0038] Fig. 9 It is a schematic diagram of the connection between the front enclosure frame and the front enclosure skin.

[0039] Fig.10 It is a schematic diagram of the connection between the rear enclosure frame and the rear enclosure upper skin.

[0040] Description of reference numerals:

[0041] 1-front enclosure frame; 2-rear enclosure frame; 3-left enclosure panel; 31-glass mounting port; 4-right enclosure panel; 5-top cover; 6-front enclosure skin; 7-rear enclosure upper skin; 71-first opening; 8-rear enclosure headlight skin; 9-rear hatch; 10-rear hatch support frame; 11-rear enclosure bumper skin; 12-first bolt; 13-second bolt; 14-third bolt; 15-side enclosure frame; 16-side enclosure skin; 17-PVC board. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0043] See also Figure 1 , Figure 2 , Figure 5 , Figure 6 , Fig. 9 as well as Fig.10 The utility model provides a bus body structure, including a front enclosure frame 1, a rear enclosure frame 2, a left enclosure panel 3, a right enclosure panel 4, a top cover 5 and a bottom plate (not shown in the drawings). The left enclosure panel 3, the right enclosure panel 4, the top cover 5 and the bottom plate are all carbon fiber composite plates; the carbon fiber composite plate (hereinafter the same) can be a composite plate mixed with glass fiber and carbon fiber.

[0044] like Figure 1 , Figure 3 , Figure 6 , Figure 8 , Fig. 9 as well as Fig.10 As shown, further, the bus body structure also includes a front wall skin 6, a rear wall upper skin 7 and a rear wall headlight skin 8. The front wall skin 6, the rear wall upper skin 7 and the rear wall headlight skin 8 are all carbon fiber composite panels. The front wall skin 6 is fixed to the outside of the front wall frame 1; the rear wall upper skin 7 and the rear wall headlight skin 8 are both fixed to the outside of the rear wall frame 2, and the rear wall headlight skin 8 is located on both sides of the lower part of the rear wall upper skin 7.

[0045] The utility model replaces the steel skin fixed on the front enclosure frame 1 and the rear enclosure frame 2 with a carbon fiber composite plate. Compared with using carbon fiber composite materials only in the left enclosure panel 3, the right enclosure panel 4 and the top cover 5, the body of the passenger car or bus can be further reduced in weight. While not affecting the strength and rigidity of the body, the lightweight degree of the entire vehicle can be further improved.

[0046] Specifically, the rear enclosure upper skin 7 and the rear enclosure headlight skin 8 may be two independently formed panels, or may be a whole panel formed in one piece.

[0047] like Fig.10 As shown, specifically, a first opening 71 cooperating with the rear glass window of the bus is provided on the rear enclosure upper skin 7 .

[0048] like Figure 1 and Fig.10 As shown, further, the bus body structure also includes a rear hatch 9 and a rear hatch support frame 10.

[0049] The rear hatch door 9 is located below the rear upper skin 7 and between the rear headlight skin 8; the rear hatch door support frame 10 is fixed to the back of the rear hatch door 9, and the rear hatch door support frame 10 is used to support the rear hatch door 9 so that the rear hatch door 9 can withstand a strong impact. When the rear of the bus is hit hard, the degree of damage to the engine, gearbox and other components at the rear of the bus can be reduced.

[0050] like Fig.10 As shown, further, the rear hatch door support frame 10 is rotatably connected to the rear enclosure frame 2 so that the rear hatch door 9 can be opened and closed together with the rear hatch door support frame 10 .

[0051] Furthermore, the rear hatch 9 is made of a carbon fiber composite plate or an aluminum alloy plate with a smaller specific gravity than a steel plate, which enables the rear hatch 9 to withstand a strong impact force while further reducing the weight of the bus body.

[0052] like Figure 1 As shown, further, the bus body structure further includes a rear bumper skin 11. The rear bumper skin 11 is fixed to the outer side of the rear frame 2 and is located below the rear hatch 9.

[0053] The rear bumper skin 11 is a carbon fiber composite plate or an aluminum alloy plate, which can not only protect the rear part of the bus body from strong impact force, but also further reduce the weight of the bus body.

[0054] like Figure 4 and Figure 7 As shown, further, the two sides of the top cover 5 are respectively connected to the upper part of the left side panel 3 and the upper part of the right side panel 4 through a plurality of first bolts 12; the front panel frame 1 is respectively connected to the left side panel 3, the right side panel 4 and the top cover 5 through a plurality of second bolts 13; the rear panel frame 2 is respectively connected to the left side panel 3, the right side panel 4 and the top cover 5 through a plurality of third bolts 14.

[0055] The utility model uses bolts to connect the top cover 5, the left side panel 3, the right side panel 4, the front panel frame 1 and the rear panel frame 2. No air pollution is generated during the construction process, and the construction environment can be greatly improved. At the same time, the bolt connection method will not cause deformation of the panels, the top cover 5 and the skin, and the vehicle body will be smoother and more beautiful. When a single structural component is damaged, the vehicle body can be repaired by removing the bolts and replacing new structural components, and the overall strength of the vehicle body can be quickly restored.

[0056] In addition, compared with the welding process, the bolt connection method has no welding defects, has no effect on the strength of the car body, and will not cause water leakage in the car due to air holes in the welding process.

[0057] In order to further improve the corrosion resistance and sealing of the bus body, sealant can be applied to the joints between the top cover 5 and the left side panel 3 and the right side panel 4, the joints between the front panel frame 1 and the left side panel 3, the right side panel 4 and the top cover 5, and the joints between the rear panel frame 2 and the left side panel 3, the right side panel 4 and the top cover 5.

[0058] Furthermore, the front enclosure skin 6 is bonded to the outer side of the front enclosure frame 1 by structural adhesive; the rear enclosure upper skin 7, the rear enclosure headlight skin 8 and the rear enclosure bumper skin 11 are all bonded to the outer side of the rear enclosure frame 2 by structural adhesive; the rear hatch 9 is bonded to the outer side of the rear hatch 9 bracket by structural adhesive.

[0059] The joints between the front panel skin 6 and other vehicle body structures (such as the top cover 5, the left side panel 3, the right side panel 4 and the bottom plate) are all coated with sealant. Similarly, the joints between the rear panel upper panel 7, the rear headlight panel 8 and the rear bumper panel 11 and other vehicle body structures (such as the top cover 5, the left side panel 3, the right side panel 4 and the bottom plate) are also coated with sealant, which can further improve the corrosion resistance and sealing of the bus body.

[0060] like Figure 8 As shown, further, the left side panel 3, the right side panel 4 and the top cover 5 are filled with PVC (foam) boards 17, and the PVC boards can prevent the noise and vibration generated during the driving of the vehicle from propagating into the interior of the vehicle body. Compared with the bus body with a traditional structure, the NVH performance (noise, vibration and acoustic roughness) can be improved.

[0061] like Figure 1 , Figure 3 as well as Figure 5 As shown; further, the bus body structure also includes a side wall frame 15 and a side wall skin 16.

[0062] The side enclosure frame 15 is bonded to the outside of the left enclosure panel 3 and the right enclosure panel 4 by structural adhesive, and is provided for the purpose of installing vehicle body exterior decoration (such as glass and side enclosure skin 16). The side enclosure skin 16 is bonded to the outside of the side enclosure frame 15 by structural adhesive, and can play the role of vehicle body decoration.

[0063] Furthermore, the side enclosure frame 15 is an aluminum alloy frame, which helps reduce the weight of the vehicle body compared to a steel frame, while not affecting the bonding of the side enclosure skin 16. The side enclosure skin 16 is bonded to the aluminum alloy frame in blocks, which is simple and easy to construct, does not require other equipment to assist in operation, and is more convenient for later repair of the skin.

[0064] Furthermore, the side enclosure skin 16 is an aluminum alloy plate or a PVC plate. Aluminum alloy plates and PVC plates are not easy to rust, and the side enclosure skin 16 can be used for a long time even if it is exposed to rain. In addition, compared with steel skins, aluminum alloy plates and PVC plates have a smaller specific gravity. When aluminum alloy plates and PVC plates are used as skins, they can reduce weight by 25%-35% (compared to steel skins of the same size).

[0065] like Figure 1 As shown, further, the upper parts of the left side panel 3 and the right side panel 4 are both provided with a plurality of glass installation openings 31, and the glass can be bonded to the left side panel 3 and the right side panel 4 by means of structural adhesive; the side panel skin 16 located on the outer side of the upper part of the side panel frame 15 has a second opening for the glass to pass through (the accompanying drawing only shows the side panel skin 16 located on the outer side of the lower part of the side panel frame 15).

[0066] The utility model also provides a public bus with excellent lightness and high strength, comprising the above-mentioned bus body structure.

[0067] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A bus body structure, comprising a front enclosure frame, a rear enclosure frame, a left enclosure panel, a right enclosure panel and a top cover; the left enclosure panel, the right enclosure panel and the top cover are all carbon fiber composite panels; characterized in that: Also includes: A cowl skin, wherein the cowl skin is fixed to the outer side of the cowl frame, The rear enclosure upper skin is fixed to the outer side of the rear enclosure frame. The rear headlight skin is fixed to the outside of the rear frame and is located on both sides of the lower part of the rear upper skin; Among them, the front panel skin, the rear panel upper panel skin and the rear headlight panel skin are all carbon fiber composite panels.

2. The bus body structure according to claim 1, characterized in that: Also includes: A rear hatch door, the rear hatch door is located below the upper skin of the rear enclosure and between the skins of the rear headlights, and a rear hatch door support frame, the rear hatch door support frame is fixed to the back of the rear hatch door, and the rear hatch door support frame is rotatably connected to the rear enclosure frame; Wherein, the rear hatch is made of a carbon fiber composite panel or an aluminum alloy panel.

3. The bus body structure according to claim 2, characterized in that: Also includes: The rear bumper skin is fixed to the outside of the rear frame and is located below the rear hatch. The rear bumper skin is a carbon fiber composite plate or an aluminum alloy plate.

4. The bus body structure according to claim 1, characterized in that: The two sides of the top cover are respectively connected to the upper part of the left side panel and the upper part of the right side panel through multiple first bolts; the front panel frame is respectively connected to the left side panel, the right side panel and the top cover through multiple second bolts; the rear panel frame is respectively connected to the left side panel, the right side panel and the top cover through multiple third bolts.

5. The bus body structure according to claim 3, characterized in that: The front enclosure skin is bonded to the outer side of the front enclosure frame; the rear enclosure upper skin, rear enclosure headlight skin and rear enclosure bumper skin are all bonded to the outer side of the rear enclosure frame; the rear hatch is bonded to the outer side of the rear hatch bracket.

6. The bus body structure according to claim 1, characterized in that: The left side panel, the right side panel and the top cover are all filled with PVC boards.

7. The bus body structure according to claim 1, characterized in that: Also includes: A side panel frame, wherein the side panel frame is bonded to the outer sides of the left side panel and the right side panel; The side enclosure skin is bonded to the outer side of the side enclosure frame.

8. The bus body structure according to claim 7, characterized in that: The side enclosure frame is an aluminum alloy frame; the side enclosure skin is an aluminum alloy plate or a PVC plate.

9. The bus body structure according to claim 7, characterized in that: The upper parts of the left side panel and the right side panel are both provided with a plurality of glass installation openings; the side panel skin located on the outer side of the upper part of the side panel frame has a second opening for the glass to pass through.

10. A public bus, characterized in that: The invention comprises a bus body structure as described in any one of claims 1 to 9.

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