A hinge and framework connecting structure and a passenger car

Abstract

The utility model provides a kind of hinge and framework connecting structure, passenger car, it is related to automobile technical field. Including side wall framework, further including single-shaft hinge;The side wall framework is connected with hatch seal stopper, and installation slot position for installing hinge is formed on the hatch seal stopper, first seal adhesive layer is arranged in the installation slot position;The single-shaft hinge includes hinge main body and pivot part, the pivot part is inserted into the hinge profile on hatch main body;At least two bolt holes in upper and lower distribution are formed on the hinge main body to be connected to the side wall framework by bolt;And liquid inlet and discharge sump are set in the back of the hinge main body, to make electrophoretic fluid can flow into and discharge the bonding area of the hinge and hatch seal stopper. By the present scheme, the connection of hinge and framework is effectively prevented from rusting.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and more specifically, to a hinge and frame connection structure and a bus. Background Technology

[0002] Currently, large vehicles such as buses have numerous cabin doors, which are typically connected to the frame via hinges. However, existing technology presents several significant problems: First, the contact area between the traditional hinge and the frame lacks effective rust prevention measures, making the contact surface prone to corrosion over time, severely impacting the structure's durability and lifespan. Second, existing bus hinges usually require pre-embedded, bulky, and heavy hinge mounting profiles, increasing the overall vehicle weight, consuming valuable cabin space, hindering daily maintenance of the door equipment, and affecting passenger luggage storage space. Furthermore, existing hinge structures lack effective sealing measures during installation, making it difficult for electrophoretic fluid to fully flow into the contact area between the hinge and the frame, resulting in insufficient corrosion resistance. During long-term use, the connection between the hinge and the frame is prone to loosening and shifting, affecting the normal opening and closing function of the cabin door. These problems severely restrict the vehicle's performance and reliability. Utility Model Content

[0003] This utility model discloses a hinge and frame connection structure, which aims to solve the problems mentioned above.

[0004] The present invention adopts the following solution: This application provides a hinge and frame connection structure, including a side frame and a single-axis hinge; wherein, a hatch sealing stop is connected to the side frame, and a mounting groove for installing the hinge is formed on the hatch sealing stop, and a first sealing adhesive layer is provided in the mounting groove; the single-axis hinge includes a hinge body and a pivot portion, the pivot portion being inserted into a hinge profile on the hatch body; at least two bolt holes are formed on the hinge body in an upward and downward distribution to be connected to the side frame by bolts; and an inlet and outlet liquid settling platform is provided on the back of the hinge body to allow electrophoretic liquid to flow into and out of the contact area between the hinge and the hatch sealing stop.

[0005] Furthermore, a second sealing layer is provided at the connection position between the peripheral edge of the hinge body and the door sealing stop.

[0006] Furthermore, the hinge body and the pivot portion of the single-axis hinge form a T-shaped structure, with the pivot portion formed at one end of the hinge body.

[0007] Furthermore, the pivot is mounted on the hinge profile of the hatch body via a copper bushing.

[0008] Furthermore, the pivot portion includes a first shaft and a second shaft symmetrically distributed along the length direction of the hinge body, for connecting to the hinge profiles on adjacent door bodies, respectively.

[0009] Furthermore, on the hinge body, a self-tapping screw is provided on both sides of the bolt to be embedded in the door sealing stop to prevent the door from moving.

[0010] Furthermore, the hinge body of the single-axis hinge has two screw holes to facilitate the insertion of automatic screws, and the two self-tapping screw holes are distributed on the left and right sides between the two bolt holes.

[0011] Furthermore, the two bolt holes are configured as elongated holes.

[0012] Furthermore, the single-axis hinge is made of Q235 casting material, and the pivot is made of high-strength alloy steel 40Cr, and is entirely coated with color zinc.

[0013] This utility model also provides a passenger vehicle, including the aforementioned hinge and frame connection structure.

[0014] Beneficial effects: As can be seen from the above, the hinge and frame connection structure and its installation method provided in this application ensure that the electrophoretic liquid fully covers the bonding area through the installation groove and the first sealing adhesive layer, optimize the flow path of the electrophoretic liquid by combining the inlet and outlet liquid settling platform, and effectively solve the problems of corrosion, heavy weight and easy loosening of the traditional structure by using a dual fixing method of bolts and self-tapping screws. It has the characteristics of excellent corrosion resistance, compact structure and reliable installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure between the hinge and the frame of a bus according to an embodiment of the present invention; Figure 2 This is an enlarged structural schematic diagram of a hinge-frame connection structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the back structure of a single-axis hinge with a hinge-frame connection structure according to an embodiment of the present invention; Figure 4 This is a side view of a single-axis hinge with a hinge-frame connection structure according to an embodiment of the present invention. Reference numerals: 1. Side frame; 2. Single-axis hinge; 21. Hinge body; 22. Rotating shaft; 23. Bolt hole; 24. Screw hole; 25. Inlet / outlet liquid settling platform; 3. Copper bushing; 4. Door sealing stop; 5. Door body; 6. Bolt; 7. Self-tapping screw; 8. First sealing layer; 9. Second sealing layer. Detailed Implementation

[0016] Combination Figures 1 to 4As shown, this embodiment provides a bus, including a hinge and frame connection structure. The hinge and frame connection structure includes a side frame 1 and a single-axis hinge 2; wherein, a door sealing stop 4 is connected to the side frame 1, and a mounting groove for installing the hinge is formed on the door sealing stop 4, and a first sealing adhesive layer 8 is provided in the mounting groove; the single-axis hinge 2 includes a hinge body 21 and a pivot part 22, the pivot part 22 being inserted into a hinge profile on the door body 5; at least two bolt holes 23 distributed vertically are formed on the hinge body 21 for connection to the side frame 1 by bolts 6; and an inlet / outlet liquid sink 25 is provided on the back of the hinge body 21 to allow electrophoretic liquid to flow into and out of the contact area between the hinge and the door sealing stop 4.

[0017] The hatch sealing stop 4 refers to a sealing component fixed to the side frame 1, which can be achieved by welding. Its surface forms mounting grooves for locating the hinge, providing support and fixation. The mounting groove is a recessed structure on the hatch sealing stop 4, formed, for example, by stamping or milling, to accommodate the hinge body 21 and restrict its displacement. The first sealing layer 8 is a sealing material, such as polyurethane or silicone, applied to the mounting groove to fill the gap between the hinge and the groove, preventing liquid seepage. The inlet / outlet liquid leveling platform 25 is a recessed area on the back of the hinge body 21, formed, for example, by casting or machining, allowing the electrophoretic fluid to flow in and out of the contact surface between the hinge and the sealing stop 4 during electrophoresis, preventing liquid accumulation and uneven anti-corrosion layer. The first sealing layer 8 is applied to the bottom of the groove before installation. The hinge body 21 is fixed to the side frame 1 by bolts 6 passing through the vertically distributed holes, ensuring connection stability. After the pivot 22 is inserted into the hinge profile on the hatch body 5, the copper bushing 3 reduces frictional loss. During electrophoresis, the inlet / outlet liquid settling platform 25 guides the liquid to fully cover the mating surface, preventing residue from causing corrosion. After installation, the self-tapping screws 7 further restrict hinge displacement and prevent the hatch from moving.

[0018] This design simplifies the structure by directly fixing the hinge body 21, isolates corrosive media through sealant, and optimizes the flow path of the electrophoretic fluid using a sink platform, improving corrosion uniformity and solving the corrosion problem at the hinge-frame contact surface, thus extending service life. The single-axis hinge 2 structure reduces weight, avoids the use of embedded profiles in the cabin space, and facilitates equipment maintenance and baggage storage. The inlet / outlet sink platform 25 ensures that the electrophoretic fluid fully covers the contact surface, forming double protection in conjunction with the sealant layer, significantly improving corrosion resistance. The hinge body 21 is double-fixed with bolts 6 and self-tapping screws 7, enhancing connection stability and reducing maintenance requirements.

[0019] In a preferred embodiment, a second sealant layer 9 is provided at the connection point between the peripheral edge of the hinge body 21 and the door sealing stop 4. The second sealant layer 9 refers to the sealing material layer covering the connection between the hinge body 21 and the door sealing stop 4. Specifically, polyurethane sealant or silicone sealant can be used. A continuous sealing interface is formed through a coating process, blocking the penetration path of external water vapor and oxygen. After the hinge body 21 is fixed to the side frame 1 by bolts 6, sealant is evenly applied along the contact line between its peripheral edge and the door sealing stop 4, forming a closed ring around the hinge installation area. After the entire vehicle completes the electrophoresis process, the second sealant layer 9 serves as a secondary protective layer, forming a double-sealing structure with the first sealant layer 8 in the installation slot. By adding the second sealant layer 9, a physical isolation barrier is formed at the connection between the hinge and the frame, directly blocking the diffusion path of corrosive media.

[0020] In this embodiment, the hinge body 21 and the pivot portion 22 of the single-axis hinge 2 form a T-shaped structure, with the pivot portion 22 formed at one end of the hinge body 21. The pivot portion 22 can be vertically fixed to the end of the hinge body 21 using casting or welding processes. This structure improves the overall structural strength of the hinge and optimizes the stress distribution. Furthermore, the pivot portion 22 is mounted on the hinge profile of the hatch body 5 via a copper bushing 3. The copper bushing 3 is a wear-resistant component fitted between the pivot portion 22 and the hinge profile. Specifically, it can be made of copper alloy material and is fixed in the inner hole of the hinge profile by press fitting or interference fit. It isolates the pivot portion 22 from direct contact with the hinge profile, reducing friction and wear. This effectively solves the problem of early wear caused by direct contact between the pivot portion 22 and the hinge profile, extending the service life of the hinge system. The buffering effect of the copper bushing 3 also reduces vibration and noise during rotation, while its corrosion resistance avoids the risk of rust and jamming on the shaft mating surface, ensuring the long-term reliability of the hatch opening and closing action.

[0021] In this embodiment, the pivot section 22 includes a first shaft and a second shaft symmetrically distributed along the length of the hinge body 21, which are respectively used to connect to the hinge profiles on adjacent door bodies 5. Symmetrical distribution means that the first and second shafts are arranged mirror images of each other with the center line of the hinge body 21 as a reference. When the door is closed, the two shafts are respectively inserted into the hinge profiles on the adjacent door bodies 5, and rotational support is achieved through the copper bushing 3. This single-axis hinge 2 allows adjacent doors to share a single hinge, reducing costs.

[0022] Combination Figures 2 to 4As shown, in the preferred embodiment, self-tapping screws 7 are respectively provided on both sides of the bolt 6 to be embedded in the hatch sealing stop 4 to prevent the hatch from moving. Here, two screw holes 24 can be opened on the hinge body 21 of the single-axis hinge 2 to facilitate the insertion of automatic screws, and the two self-tapping screw holes 24 are distributed between the two bolt holes 23. This structure adds auxiliary fixing points to the bolt 6 connection to disperse the shear force generated by the movement of the hatch. After the self-tapping screws 7 are embedded, they form multi-point limiting to suppress the displacement of the hatch along the hinge axis. Specifically, after the hinge body 21 is connected to the side frame 1 by the bolt 6, the two self-tapping screws 7 are embedded into the hatch sealing stop 4 from the left and right sides respectively. The positional relationship between the bolt holes 23 and the self-tapping screw holes 24 forms a dual fixing mechanism: the bolt 6 provides the main connecting force, and the self-tapping screws 7 generate frictional resistance by embedding into the material of the sealing stop 4, further limiting the small displacement of the hatch in the longitudinal or lateral direction. Thus, the hatch can remain stable under frequent opening and closing or vibration conditions, avoiding sealing failure or structural wear caused by loosening. By adding self-tapping screws 7 to form a dual fixing mechanism, the bolts 6 bear the main load while the self-tapping screws 7 provide auxiliary constraints, reducing the risk of hatch position displacement caused by failure of a single connection point.

[0023] In a preferred embodiment, the two bolt holes 23 are elongated holes. This design allows the bolts 6 to be adjusted in position along their length within the holes, thereby accommodating installation tolerances between the side frame 1 and the hinge body 21.

[0024] In this embodiment, the side frame 1 is fixed to the hatch sealing stop 4 by welding. The side frame 1 is pre-taped to form mounting holes for installing the single-axis hinge 2. The hatch sealing stop 4 has a pre-cut mounting notch for the hinge. After welding, a first sealant layer 8 is applied to the mounting notch of the hatch sealing stop 4 to prevent the frame from corroding. This effectively solves the problem of corrosion on the hinge-frame mating surface, while avoiding the space occupation caused by pre-embedded profiles, making the hatch structure lighter, facilitating maintenance operations, and improving the overall vehicle corrosion resistance.

[0025] In this embodiment, the hinge body 21 is made of Q235 casting material, which has high strength and corrosion resistance; the pivot part 22 is made of high-strength alloy steel 40Cr, and is entirely coated with color zinc. Overall color zinc coating refers to covering the hinge surface with a zinc layer, which can be achieved using an electroplating process, forming a physical barrier to prevent oxidation and corrosion. The hinge body 21 is connected and fixed to the side frame 1 with bolts 6. After adjusting the surface difference and gap, self-tapping screws 7 are used for further tightening to prevent the door from moving. After the entire vehicle undergoes electrophoresis, a second sealing layer 9 is applied around the hinge to isolate water and oxygen in the air, improving the overall corrosion resistance of the vehicle.

[0026] Through the above technical solutions, this application effectively solves the problem of corrosion on the hinge-frame mating surface, improves corrosion resistance through a combination of materials and processes, reduces the risk of shaft wear through the copper bushing 3, prevents door movement through a multi-stage fixing method, and further isolates corrosive media through the sealing layer, thus extending the service life of the hinge structure in humid environments. The new single-axis hinge 2 occupies less cabin space, making it more convenient for passengers to store luggage and for vehicle maintenance personnel.

[0027] It should be understood that the above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0028] The accompanying drawings used in the above description of the embodiments only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. A hinge-and-frame connection structure, comprising a side frame, characterized in that, It also includes single-axis hinges; among which, The side frame is connected to a hatch sealing stop, and a mounting groove for installing a hinge is formed on the hatch sealing stop. A first sealing adhesive layer is provided in the mounting groove. The single-axis hinge includes a hinge body and a pivot portion, the pivot portion being inserted into the hinge profile on the hatch body; the hinge body has at least two bolt holes distributed vertically to be connected to the side frame by bolts; and an inlet / outlet liquid settling platform is provided on the back of the hinge body so that the electrophoretic liquid can flow into and out of the contact area between the hinge and the hatch sealing stop.

2. The hinge and frame connection structure according to claim 1, characterized in that, A second sealing layer is provided at the connection position between the peripheral edge of the hinge body and the door sealing stop.

3. The hinge and frame connection structure according to claim 1, characterized in that, The hinge body and the pivot portion of the single-axis hinge form a T-shaped structure, with the pivot portion formed at one end of the hinge body.

4. The hinge and frame connection structure according to claim 3, characterized in that, The pivot section is mounted on the hinge profile of the hatch body via a copper bushing.

5. The hinge and frame connection structure according to claim 3, characterized in that, The pivot section includes a first shaft and a second shaft symmetrically distributed along the length of the hinge body, which are used to connect to the hinge profiles on adjacent door bodies, respectively.

6. The hinge and frame connection structure according to claim 1, characterized in that, On the hinge body, a self-tapping screw is provided on both sides of the bolt to be embedded in the door sealing stop to prevent the door from moving.

7. The hinge and frame connection structure according to claim 6, characterized in that, The hinge body of the single-axis hinge has two screw holes for the insertion of automatic screws, and the two self-tapping screw holes are distributed on the left and right sides between the two bolt holes.

8. The hinge and frame connection structure according to claim 7, characterized in that, The two bolt holes are configured as elongated holes.

9. The hinge and frame connection structure according to claim 1, characterized in that, The single-axis hinge is made of Q235 casting material, and the pivot is made of high-strength alloy steel 40Cr, and is entirely coated with color zinc.

10. A passenger vehicle, characterized in that, Includes the hinge and frame connection structure as described in any one of claims 1-9.

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