A flexible connection device between the driver's cab and the carriage
By designing a flexible connection device between the cab and the cargo box, and utilizing adapter components and seals, the problems of sealing and torsion are solved, achieving both sealing and ease of operation, meeting regulatory requirements, and facilitating routine vehicle maintenance.
Patent Information
- Application Number
- CN202522562386.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-02
AI Technical Summary
Existing technologies cannot effectively meet the sealing and torsional requirements between the cab and the cargo box, and are inconvenient for routine vehicle maintenance and repair.
A connection device including a transition component and a flexible component was designed. It consists of seals, an internal pressure frame, connectors and fasteners to achieve a flexible connection between the cab and the cargo box, meeting the requirements of sealing and ease of operation.
It achieves effective sealing between the cab and the cargo box, meets regulatory requirements, and facilitates routine vehicle maintenance and repair.
Smart Images

Figure CN224941187U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle connection equipment technology, specifically a flexible connection device between the driver's cab and the passenger compartment. Background Technology
[0002] Modified vehicles based on Class II truck chassis typically have separate cabs and rear cargo boxes. Under certain conditions, communication and operation between the cab and the front can be very inconvenient. Furthermore, motorhomes with a rear cargo box capacity require a rectangular through-hole of a certain size between the cab and the cargo box to meet regulatory requirements. Therefore, a through-sealed device is needed to connect the cab and the cargo box to ensure normal operation between the two sections. Conventional connection channels cannot meet the requirements for sealing and torsion between the cab and the cargo box, nor can they meet the daily maintenance and inspection requirements of vehicles with a forward-tilting cab. Utility Model Content
[0003] The purpose of this invention is to provide a flexible connection device between the driver's cab and the passenger compartment to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a flexible connection device between a cab and a carriage, comprising a transfer assembly installed on one side of the cab; one side of the transfer assembly is connected to the carriage via a flexible component; the transfer assembly includes an outer fixing frame, and a first sealing element is provided at the connection between the outer fixing frame and the cab; the flexible component includes a sealing cover, one end of which has a first connecting portion, and an inner pressure frame is provided inside the first connecting portion; a connecting element passes through the inner pressure frame, the transfer assembly, and the cab and is connected to a fastener to achieve the connection between the transfer assembly and the flexible component and the cab.
[0005] As a preferred technical solution of this utility model: the first sealing element includes a groove, and a sealing ring is provided on the outside of the groove; wherein, the groove is fitted at the connection between the cab and the outer fixed frame, and the sealing ring is in contact with the flexible component.
[0006] As a preferred technical solution of this utility model: protrusions are provided on the opposing surfaces inside the groove.
[0007] As a preferred technical solution of this utility model, a water baffle is also provided at the upper end of the outer fixing frame.
[0008] As a preferred technical solution of this utility model, an inner pad is also provided between the outer fixing frame and the flexible component.
[0009] As a preferred embodiment of this utility model: the flexible component further includes a decorative frame; the first connecting portion is pressed against the first sealing member through the decorative frame.
[0010] As a preferred technical solution of this utility model: the flexible component further includes a second sealing element, and the second sealing element is fitted onto the edge of the first connecting part.
[0011] As a preferred technical solution of this utility model: the cross-section of the second sealing element is U-shaped.
[0012] As a preferred technical solution of this utility model: the cross-section of the decorative frame is L-shaped, and the bottom edge of the decorative frame extends towards the inside of the sealing cover.
[0013] As a preferred technical solution of this utility model: the sealing cover is made of foldable tarpaulin, and the end of the sealing cover away from the first connecting part is also provided with a second connecting part.
[0014] The beneficial effects of this utility model by adopting the above technical solution are: the device can effectively solve the problem of poor sealing between the cab and the cargo box and the requirements for daily maintenance and repair of the chassis vehicle, which can meet the regulatory requirements and facilitate personnel to operate inside the vehicle. Attached Figure Description
[0015] Figure 1 This is an exploded view of the main structure of this utility model; Figure 2 This is a schematic diagram of the main structure of the present utility model; Figure 3 for Figure 2 A magnified view of a portion of point A in the middle; Figure 4 This is an exploded structural diagram of the adapter component of this utility model; Figure 5 This is a cross-sectional structural diagram of the first sealing element of this utility model; Figure 6 for Figure 5 A magnified view of a portion of point B in the middle; Figure 7 This is an exploded structural diagram of the flexible component of this utility model.
[0016] In the diagram: 1. Cab; 2. Adapter assembly; 20. External fixing frame; 21. Water baffle; 22. First seal; 23. Groove; 24. Protrusion; 25. Sealing ring; 3. Flexible assembly; 30. Sealing cover; 31. First connecting part; 32. Connector; 33. Internal pressure frame; 34. Second seal; 35. Decorative frame; 36. Second connecting part; 4. Fastener; 5. Inner pad. Detailed Implementation
[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.
[0018] Please see Figure 1-7 This utility model provides an embodiment of a flexible connection device between a cab and a carriage, comprising a transfer component 2 installed on one side of the cab 1; one side of the transfer component 2 is connected to the carriage via a flexible component 3; the transfer component 2 includes an outer fixing frame 20, and a first sealing element 22 is provided at the connection between the outer fixing frame 20 and the cab 1; therefore, the first sealing element 22 can be used to seal the cab 1 and the outer fixing frame 20. To facilitate the disassembly and assembly of the flexible component 3 and the adapter component 2, the flexible component 3 includes a sealing cover 30, one end of which is provided with a first connecting part 31, and an inner pressure frame 33 is provided inside the first connecting part 31; a connecting piece 32 passes through the inner pressure frame 33, the adapter component 2 and the cab 1 and is connected to a fastener 4 to realize the connection between the adapter component 2 and the flexible component 3 and the cab 1.
[0019] The connector 32 is preferably a bolt, and the fastener 4 is preferably a knurled screw. Therefore, the fastener 4 can be loosened on the inside of the cab 1 to loosen the fastener 4 and the connector 32, so as to facilitate the disassembly of the adapter 2 and the flexible component 3. At the same time, as the fastener 4 is tightened, the first connecting part 31 can be forced to squeeze the first sealing member 22 to improve the sealing of the connection between the cab 1 and the first connecting part 31.
[0020] As a preferred embodiment, the sealing cover 30 is made of foldable tarpaulin, and a second connecting part 36 is provided at the end of the sealing cover 30 away from the first connecting part 31; wherein, the second connecting part 36 can be directly fixed to the carriage by welding or other methods. The foldable tarpaulin is installed and fixed to the front wall of the carriage through holes by screws or rivets. The foldable tarpaulin is made of silicone rubber material, and the sealing cover 30 formed can meet certain tensile and torsional conditions.
[0021] Therefore, due to the compressibility and stretchability of the folding tarpaulin, it can counteract certain torsional and swaying movements between the cab and the vehicle body during movement. Furthermore, when the chassis requires maintenance, fastener 4 can be removed to separate the device from the cab, facilitating the cab's forward tilt and making vehicle maintenance easier.
[0022] Furthermore, since the first sealing element 22 includes a groove 23, and a sealing ring 25 is provided on the outer side of the groove 23; wherein, the groove 23 is fitted onto the connection between the cab 1 and the outer fixed frame 20, and the sealing ring 25 is in contact with the flexible component 3. Therefore, the groove 23 can be used to fit one side of the first sealing element 22 onto the edge of the cab 1 and the outer fixed frame 20, sealing the connection between the cab 1 and the outer fixed frame 20.
[0023] Furthermore, since protrusions 24 are provided on the opposing surfaces inside the slot 23, when the first seal 22 is compressed, the protrusions 24 can be pressed against the side of the cab 1 and the outer side of the outer fixing frame 20 to further enhance the sealing performance of the equipment.
[0024] To reduce rainwater infiltration, a water baffle 21 is provided at the upper end of the outer fixing frame 20. Therefore, the water baffle 21 can be used to block rainwater and reduce the amount of water entering the equipment through gaps.
[0025] In addition, an inner pad 5 is provided between the outer fixing frame 20 and the flexible component 3. Therefore, the inner pad 5 can be used to limit the movement distance of the flexible component 3 towards the cab 1, and the inner pad 5 can be used to ensure that the first seal 22 is under appropriate compression during connection, so as to extend the service life of the first seal 22; wherein, the first seal 22 is preferably made of rubber.
[0026] Based on the above solution, since the flexible component 3 also includes a decorative frame 35, the first connecting portion 31 is pressed against the first sealing member 22 by the decorative frame 35. Therefore, the decorative frame 35 can be fitted with the first sealing member 22 to improve the sealing performance between the facing surfaces of the flexible component 3 and the adapter component 2; in particular, when the inner fixing frame 33 is located inside the first connecting portion 31 and the decorative frame 35 is located outside the first connecting portion 31, the outer fixing frame 33 and the decorative frame 35 can be used to shape the first connecting portion 31 to prevent deformation of the first connecting portion 31 during use.
[0027] Furthermore, since the flexible component 3 also includes a second sealing element 34, and the second sealing element 34 is fitted onto the edge of the first connecting portion 31, the second sealing element 34 can be used to seal the decorative frame 35 and the inner pressure frame 33. Specifically, the cross-section of the second sealing element 34 is U-shaped, so when the second sealing element 34 is fitted onto the edge of the first connecting portion 31, the sealing performance at the connection can be enhanced. Specifically, the first connecting portion 31 is an L-shaped metal part, such as an iron plate or a stainless steel plate, thus facilitating the insertion of one end of the first connecting portion 31 into the U-shaped second sealing element 34. One side of the second sealing element 34 can seal the first connecting portion 31 and the decorative frame 35, and the other side of the second sealing element 34 can seal the first connecting portion 31 and the inner pressure frame 33, thus ensuring that both sides of the decorative frame 35 are sealed. Preferably, the second sealing element 34 is made of rubber.
[0028] Furthermore, the decorative frame 35 has an L-shaped cross-section, and its bottom edge extends inward toward the sealing cover 30. Therefore, it can conceal the inner pressure frame 33 and the second seal, achieving an aesthetic effect, and can also support the inner pressure frame 33 from below.
[0029] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A flexible connection device between the driver's cab and the vehicle body, characterized in that: Includes a transfer assembly (2) installed on one side of the cab (1); one side of the transfer assembly (2) is connected to the carriage by a flexible component (3); The adapter assembly (2) includes an outer fixing frame (20), and a first sealing element (22) is provided at the connection between the outer fixing frame (20) and the cab (1). The flexible component (3) includes a sealing cover (30), one end of which is provided with a first connecting part (31), and an inner pressure frame (33) is provided inside the first connecting part (31). The connecting piece (32) passes through the internal pressure frame (33), the adapter (2) and the cab (1) and is connected to the fastener (4) to realize the connection between the adapter (2) and the flexible component (3) and the cab (1).
2. The flexible connection device between the driver's cab and the carriage according to claim 1, characterized in that: The first sealing element (22) includes a groove (23), and a sealing ring (25) is provided on the outside of the groove (23); wherein the groove (23) is fitted at the connection between the cab (1) and the outer fixed frame (20), and the sealing ring (25) is in contact with the flexible component (3).
3. The flexible connection device between the driver's cab and the carriage according to claim 2, characterized in that: The groove (23) has protrusions (24) on the opposing surfaces inside.
4. The flexible connection device between the driver's cab and the carriage according to claim 3, characterized in that: The upper end of the outer fixing frame (20) is also provided with a water baffle (21).
5. The flexible connection device between the driver's cab and the carriage according to claim 4, characterized in that: An inner pad (5) is also provided between the outer fixing frame (20) and the flexible component (3).
6. A flexible connection device between a driver's cab and a carriage according to any one of claims 1-5, characterized in that: The flexible component (3) also includes a decorative frame (35); the first connecting part (31) is pressed against the first seal (22) by the decorative frame (35).
7. The flexible connection device between the driver's cab and the carriage according to claim 6, characterized in that: The flexible component (3) further includes a second seal (34), which is fitted over the edge of the first connecting portion (31).
8. The flexible connection device between the driver's cab and the carriage according to claim 7, characterized in that: The second seal (34) has a U-shaped cross-section.
9. The flexible connection device between the driver's cab and the carriage according to claim 8, characterized in that: The decorative frame (35) has an L-shaped cross-section, and the bottom edge of the decorative frame (35) extends toward the inside of the sealing cover (30).
10. A flexible connection device between a driver's cab and a carriage according to claim 9, characterized in that: The sealing cover (30) is made of foldable tarpaulin, and a second connecting part (36) is provided at the end of the sealing cover (30) away from the first connecting part (31).
