Cab corner closure structure and vehicle
By installing flanges at the corners of the cab and adopting a stepped, recessed neck box structure, the problem of corner openings in the cab was solved, improving the airtightness of the vehicle, reducing noise, and increasing the cab space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI CHANGAN AUTOMOBILE
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-21
AI Technical Summary
There are holes in the corner of the driver's cab, which leads to poor airtightness and increased noise in the vehicle.
Multiple flanges are provided at the connection corners of the side panels, neck box, and front bulkhead to completely or partially cover the corners of the connection, and a stepped recessed neck box is adopted to increase the connection strength and sealing performance.
It effectively avoids holes at the corners of the cab, improves the airtightness of the vehicle, reduces noise, increases the cab space, and improves manufacturability and connection strength.
Smart Images

Figure CN224528584U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive technology, and more specifically to a cab corner enclosure structure and an automobile. Background Technology
[0002] A typical cab corner consists of a side panel, a lower front bulkhead, and an upper neck box. Due to the requirements of part forming, the neck box usually adopts a U-shaped structure at the junction of these three parts. The upper part of the front bulkhead fits into the bottom of the neck box, so the upper part of the front bulkhead has a flange. Inevitably, a hole appears at the corner of the front bulkhead. This hole cannot be filled by another part and is usually sealed with sealant. Sometimes, the sealing is not good, which leads to water leakage in the cab, poor air tightness of the vehicle, and increased vehicle noise, failing to meet the requirements. Utility Model Content
[0003] The technical problem to be solved by this utility model is how to avoid holes appearing at the corners of the driver's cab.
[0004] This utility model solves the above-mentioned technical problems through the following technical means: a cab corner enclosure structure, including a side panel, a neck box, and a front cover. The side panel, neck box, and front cover are all provided with a flange at one end of their connecting corner point. Multiple flanges can partially or completely cover the corner point at the connection of the side panel, neck box, and front cover.
[0005] As a preferred technical solution, the end of the side panel that connects to the neck box and the front bulkhead is formed with flange one, flange two, and flange three.
[0006] As a preferred technical solution, the end of the neck box that connects to the side panel and the front bulkhead is formed with flange four, flange five, and flange six that are compatible with flange one.
[0007] As a preferred technical solution, a flange is provided on the front panel.
[0008] As a preferred technical solution, the third flange is located between the sixth and seventh flanges.
[0009] As a preferred technical solution, sealant is applied to the mating surfaces of the side panels, neck box, and front bulkhead.
[0010] As a preferred technical solution, the neck box is designed with a stepped sunken structure, and a stepped surface is opened inside the neck box.
[0011] As a preferred technical solution, the vertical connecting surfaces of the front panel and the neck box are fixedly connected by spot welding, and the overlapping edges of the side panels, neck box, and front panel are fixed by welding.
[0012] As a preferred technical solution, the side panel also has instrument panel steering support beam mounting nut holes, wiring harness channel holes, horn speaker holes, wheel hub mating surfaces, front door limiter mounting holes, and front door rubber strip stop edges.
[0013] As a preferred technical solution, the neck box is formed with front pillar mounting holes, decorative part mounting holes, air conditioning vents, reinforcing rib one, and studs; the front bulkhead is formed with brake pipe channel holes, steering wheel channel holes, pipe channel holes, wheel hubs, center channel bosses, and reinforcing rib two.
[0014] This utility model also provides an automobile, including a corner enclosure structure for the driver's cab.
[0015] The beneficial effects of this utility model are as follows:
[0016] (1) In this utility model, by setting flanges at one end of the side panel, the neck box, and the front bulkhead at their connecting corners, and making all flanges partially or completely cover the corners of the side panel, the neck box, and the front bulkhead, holes at the corners of the cab are avoided, thus improving the airtightness of the car and reducing the noise of the car.
[0017] (2) In this utility model, by adopting a stepped sunken structure for the neck box, the front panel and the neck box are moved forward to increase the cab space. At the same time, the neck box is sunken in a stepped manner, which reduces the depth of the neck box in one drawing process, reduces the risk of cracking, and improves the processability. The front panel and the vertical surface of the neck box are directly spot welded to each other, which increases the strength of the neck box and avoids the connection between the formed flange on the upper part of the front panel and the bottom of the neck box. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the closed structure provided in an embodiment of the present utility model;
[0019] Figure 2 This is a schematic diagram of the exploded structure of the closed structure provided in the embodiment of the present utility model;
[0020] Figure 3 A schematic diagram of the flange structure on the side plate provided in an embodiment of this utility model;
[0021] Figure 4 A schematic diagram of the side plate structure provided in an embodiment of this utility model;
[0022] Figure 5 A top view of the neck box structure provided in an embodiment of this utility model;
[0023] Figure 6 This is a front view structural diagram of the neck box provided in an embodiment of the present utility model;
[0024] Figure 7A schematic diagram of the front structure provided for an embodiment of this utility model;
[0025] Figure 8 This is a schematic diagram of another state of the closed structure provided in an embodiment of the present utility model;
[0026] Figure 9 This is a schematic diagram of another state of the side plate provided in an embodiment of the present utility model;
[0027] Figure 10 This is a schematic diagram of another state of the neck box provided in an embodiment of the present utility model;
[0028] Figure 11 This is a schematic diagram of another state of the front enclosure structure provided in an embodiment of the present utility model;
[0029] Figure 12 This is a front view schematic diagram of the closed structure provided in an embodiment of the present utility model;
[0030] Figure 13 Provided for the embodiments of this utility model Figure 12 A schematic diagram of the AA cross-sectional structure;
[0031] Figure 14 Provided for the embodiments of this utility model Figure 12 A schematic diagram of the BB cross-sectional structure;
[0032] Figure 15 Provided for the embodiments of this utility model Figure 12 Schematic diagram of CC cross-section structure;
[0033] Figure 16 A schematic diagram of the flange structure provided in an embodiment of this utility model;
[0034] Reference numerals: 1. Side panel; 11. Instrument panel steering support beam mounting nut hole; 12. Wiring harness channel hole; 13. Horn speaker hole; 14. Side panel flange; 15. Wheel hub mating surface; 16. Front door limiter mounting hole; 17. Front door rubber strip stop edge; 2. Neck box; 21. Front pillar mounting hole; 22. Trim panel mounting hole; 23. Air conditioning vent; 24. Reinforcing rib one; 25. Stud; 3. Front bulkhead; 31. Wiring harness channel hole; 32. Brake pipe channel hole; 33. Steering wheel channel hole; 34. Pipe channel hole; 35. Wheel hub; 36. Center tunnel boss; 37. Reinforcing rib two; a1. Flanged edge one; b1. Flanged edge two; c1. Flanged edge three; a2. Flanged edge four; b2. Flanged edge five; c2. Flanged edge six; c3. Flanged edge seven. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0036] See Figure 1 , Figure 8 A cab corner sealing structure includes a side panel 1, a neck box 2, and a front panel 3. Each of the side panel 1, the neck box 2, and the front panel 3 has a flange at one end of its connecting corner. Multiple flanges can partially or completely cover the corner of the connection between the side panel 1, the neck box 2, and the front panel 3. This can avoid the appearance of holes at the corner of the cab, improve the airtightness of the vehicle, and reduce vehicle noise.
[0037] See Figure 2 , Figure 16 The flanges are respectively set on the side panel 1, the neck box 2, and the front panel 3. The end of the side panel 1 connected to the neck box 2 and the front panel 3 is formed with flange a1, flange b1, and flange c1. The end of the neck box 2 connected to the side panel 1 and the front panel 3 is formed with flange a2 that matches flange a1, flange b2 that matches flange b1, and flange c2. Flanged flange c3 is provided on the front panel 3. Flanged flange a1 and flange b1 are fixedly connected to flange a2 and flange b2 respectively. Flanged flange c3 is located between flange c2 and flange c3.
[0038] It should be noted that after the side panel 1 is connected to the front bulkhead 3, it is then connected to the neck box 2. When the side panel 1 is connected to the front bulkhead 3, flange 3 c1 and flange 7 c3 are fixed. When the side panel 1 is connected to the front bulkhead 3 and then connected to the neck box 2, flange 6 c2 is fixed to the side of flange 3 c1 that is away from flange 7 c3. Flanged flange 1 a1 and flange 2 b1 are spot welded to flanged flange 4 a2 and flange 5 b2 respectively, completely covering the corner of the connection.
[0039] The front panel 3 has a flange 7c3 on its side, which is welded and fixed to the flange 3c1 of the side panel 1. The sealing is further strengthened by the sealant at the mating point to increase the sealing performance. At the same time, the side panel 1 also has a flange 3c1 at the corner, forming a two-layer flange fit, which is more conducive to sealing. In this embodiment, the mating surfaces of the side panel 1, the neck box 2, and the front panel 3 are all provided with sealant, which mainly plays a sealing role and also has a certain strength. The overall strength of the side panel 1, the neck box 2, and the front panel 3 is achieved by spot welding. There is also sealant between flange 3c1, flange 6c2, and flange 7c3. The three layers of panels can be directly spot welded together.
[0040] See Figure 13 , Figure 14 The neck box 2 adopts a stepped recessed structure, which can increase the strength of the upper part of the front bulkhead 3. A stepped surface is opened inside the neck box 2. The upper part of the front bulkhead 3 does not use a flange, but directly matches the vertical surface of the lower part of the step at the rear of the neck box 2. In this way, the front bulkhead 3 is directly spot welded to the vertical surface of the neck box 2, which increases the connection strength. At the same time, compared with the original design, the shape of the front bulkhead 3 is simplified, avoiding the need for a flange formed on the upper part of the front bulkhead 3 to connect with the bottom of the neck box 2. The stepped recessed structure of the neck box 2 can also move the front of the front bulkhead 3 and the neck box 2 to increase the cab space. At the same time, the stepped recessed shape of the neck box 2 reduces the depth of the neck box 2 in one drawing, reduces the risk of cracking, and improves the processability. The overlapping edges of the side plate 1, neck box 2, and front bulkhead 3 are fixed by welding.
[0041] See Figure 4 , Figure 9 The side panel 1 also has instrument panel steering support beam mounting nut holes 11, wiring harness channel holes 12, horn speaker holes 13, wheel hub mating surfaces 15, front door limiter mounting holes 16, and front door rubber strip stop edges 17. Instrument panel steering support beam mounting nut holes 11 are used to install the instrument panel steering support beam, wiring harness channel holes 12 are used for the wiring harness leading to the door to pass through, and horn speaker holes 13 are used to install speakers. (See reference...) Figure 3 The side panel flange 14 includes flange one a1, flange two b1, and flange three c1 as described above. The wheel hub mating surface 15 is the wheel hub mating surface between the side panel 1 and the front bulkhead 3, which accommodates the front wheel. The front door limiter mounting hole 16 is used to install the front door limiter. The front door rubber strip stop edge 17 is used to install the door sealing strip.
[0042] See Figure 5 , Figure 6 , Figure 10 The neck box 2 is generally L-shaped, with front pillar mounting holes 21, trim mounting holes 22, air conditioning vents 23, reinforcing ribs 24, and studs 25 formed on it. There are two front pillar mounting holes 21 for mounting the front pillar, one on each side symmetrically. The trim mounting holes 22 are used to mount trim. The air conditioning vents 23 are used to install the outlet of the air conditioning duct to blow air into the driver's cabin. The reinforcing ribs 24 are used to increase the local connection strength. The studs 25 are used to mount the interior trim.
[0043] See Figure 7 , Figure 11The lower part of the front bulkhead 3 is connected to the front floor, and the left and right sides are connected to the side bulkhead assemblies. The side bulkhead assemblies include side panels 1. The front bulkhead 3 is formed with wiring harness channel holes 31, brake pipe channel holes 32, steering wheel channel holes 33, pipe channel holes 34, wheel hubs 35, center channel bosses 36, and reinforcing ribs 37. The front bulkhead 3 has two wiring harness channel holes 31, which allow wiring harnesses leading to the cab to pass through. The brake pipe channel hole 32 is used to install brake pipes. The steering wheel channel hole 33 is used to install the steering wheel. The pipe channel hole 34 is used to install other pipes leading to the cab. The front bulkhead 3 has two wheel hubs 35, one on each side, for the front wheel mounting position. The middle position of the front bulkhead 3 protrudes upward to make way for the engine power transmission. The front bulkhead 3 is also provided with multiple reinforcing ribs 37, which are arranged as needed.
[0044] This embodiment also provides a vehicle, including a driver's cab corner enclosure structure.
[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A cab corner enclosure structure, comprising a side panel (1), a neck box (2), and a front fascia (3), characterized in that, The side panel (1), the neck box (2), and the front panel (3) are all provided with flanges at one end of their connecting corners. Multiple flanges can partially or completely cover the corners at the connection of the side panel (1), the neck box (2), and the front panel (3).
2. The cab corner enclosure structure according to claim 1, characterized in that, The side panel (1) is connected to the neck box (2) and the front bulkhead (3) at one end, which is formed with flange one (a1), flange two (b1) and flange three (c1).
3. The cab corner enclosure structure according to claim 2, characterized in that, The neck box (2) is connected to the side panel (1) and the front cover (3) at one end, which is formed with a flange four (a2) that is compatible with flange one (a1), flange five (b2) that is compatible with flange two (b1), and flange six (c2). A flange seven (c3) is provided on the front cover (3).
4. The cab corner enclosure structure according to claim 3, characterized in that, Flipping edge three (c1) is located between flipping edge six (c2) and flipping edge seven (c3).
5. The cab corner enclosure structure according to claim 3, characterized in that, The mating surfaces of the side panel (1), neck box (2), and front bulkhead (3) are all provided with sealant.
6. The cab corner enclosure structure according to claim 1, characterized in that, The neck box (2) is designed with a stepped sunken structure, and a stepped surface is opened inside the neck box (2).
7. The cab corner enclosure structure according to claim 1, characterized in that, The vertical connecting surfaces of the front panel (3) and the neck box (2) are fixedly connected by spot welding, and the overlapping edges of the side panel (1), the neck box (2), and the front panel (3) are fixed by welding.
8. The cab corner enclosure structure according to claim 1, characterized in that, The side panel (1) also has instrument panel steering support beam mounting nut hole (11), wiring harness channel hole (12), horn speaker hole (13), wheel hub mating surface (15), front door limiter mounting hole (16), and front door rubber strip stop edge (17).
9. A cab corner enclosure structure according to claim 1, characterized in that, The neck box (2) has front pillar mounting holes (21), decorative parts mounting holes (22), air conditioning vents (23), reinforcing rib one (24), and studs (25). The front bulkhead (3) has (31), brake pipe channel holes (32), steering wheel channel holes (33), pipe channel holes (34), wheel hubs (35), center channel bosses (36), and reinforcing rib two (37).
10. A car, characterized in that, Including a cab corner enclosure structure as described in any one of claims 1-9.