Hinge structure for a trailer

Abstract

The utility model discloses a trailer hinge structure relates to trailer hinge field, including trailer box, trailer door and the hinge assembly of installation between trailer box and trailer door, the hinge assembly includes fixed seat and the rotator of rotation connection in the bottom end of fixed seat through pin shaft, the fixed seat is inlayed with the connecting piece, one end of connecting piece is installed with first connecting rod and second connecting rod respectively, the both ends of rotator all integrative arc plate has, and the both ends of arc plate are clamped with second connecting rod respectively. The utility model discloses through rotator rotates to fixed seat one side after loosening extrusion plate along pin shaft, and the spring elasticity of tension spring pulls second connecting rod and inlayed in second clamping groove, is convenient for to the axial positioning of rotator after rotation, thereby makes trailer door close / open and plays when keeping stable, makes trailer door can assist the support to goods, has improved the stability after trailer door closing.

Description

Technical Field

[0001] This utility model relates to the field of trailer hinges, specifically a hinge structure for trailers. Background Technology

[0002] The hinge structure used in trailers typically needs to be high-strength, wear-resistant, and impact-resistant to withstand frequent torsion and load-bearing requirements.

[0003] Currently, most existing trailer doors are connected by pin hinges, which consist of two metal blades (usually made of steel) connected by a pin. However, since trailer doors need to provide auxiliary support for the cargo during use, the pin hinges lack axial positioning force, making it impossible to provide auxiliary support for the cargo. Furthermore, trailer doors with pin hinges require a positioning pin to maintain stability when closed. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a hinge structure for trailers to solve the technical problems that, since trailer doors need to provide auxiliary support for goods during use, the pin hinge lacks axial positioning force, resulting in the inability to provide auxiliary support for goods, and that trailer doors with pin hinges still require the use of positioning pins to maintain stability when closed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hinge structure for a trailer, including a trailer box, a trailer door, and a hinge assembly installed between the trailer box and the trailer door. The hinge assembly includes a fixed base and a rotating component rotatably connected to the bottom end of the fixed base via a pin. A connecting component is embedded in the fixed base. A first connecting rod and a second connecting rod are respectively installed at both ends of the connecting component. Both ends of the rotating component are integrally formed with arc-shaped plates. The second connecting rod is respectively engaged with both ends of the arc-shaped plates.

[0006] The present invention is further configured such that a protruding plate is integrally formed on the top of the trailer box, and through holes are provided in a rectangular array on both the fixed seat and the rotating component.

[0007] The present invention is further configured such that a gasket is provided on one side of the through hole, and a bolt is installed on the gasket. Multiple bolts pass through the through hole and are threaded into the convex plate and the rotating part, respectively.

[0008] The present invention is further configured such that the top end of the fixing seat is symmetrically provided with a first waist groove inclined at 45 degrees, and the bottom end of the fixing seat is symmetrically provided with a second waist groove arranged vertically.

[0009] The present invention is further configured such that the first connecting rod and the second connecting rod are slidably inserted into the first waist groove and the second waist groove respectively, and the top end of the connecting member is integrally formed with an extrusion plate.

[0010] The present invention is further configured such that a first slot and a second slot are respectively provided at both ends of the arc plate, the included angle between the first slot and the second slot is 90 degrees, the second connecting rod is respectively inserted into the first slot and the second slot, and anti-detachment protrusions are engaged on both the first connecting rod and the second connecting rod to prevent the first connecting rod and the second connecting rod from moving laterally in the fixed seat.

[0011] The present invention is further configured such that a protrusion is integrally formed at the bottom end of the fixed base, and a tension spring is provided between the protrusion and the second connecting rod, with the two ends of the tension spring respectively sleeved on the groove at the center position of the protrusion and the second connecting rod.

[0012] In summary, the present invention has the following beneficial effects: The present invention includes a fixed base and a rotating component rotatably connected to the fixed base via a pin. When the rotating component rotates to 90 degrees, a tension spring pulls down the second connecting rod, causing both ends of the second connecting rod to be embedded in the first slot. This maintains axial positioning between the fixed base and the rotating component. When the trailer door closes, it applies pressure to the extrusion plate, causing the extrusion plate to move the connecting component. During this movement, the connecting component causes the first connecting rod to tilt upwards in the first groove. The bottom end of the connecting component moves the second connecting rod out of the first slot. After the rotating component rotates along the pin to one side of the fixed base, it releases the extrusion plate. The elastic force of the tension spring pulls the second connecting rod into the second slot, facilitating axial positioning of the rotated component. This ensures stability when the trailer door is closed / opened, allowing the trailer door to provide auxiliary support for the cargo and improving the stability of the trailer door after closing. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the hinge assembly structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the hinge assembly of this utility model.

[0016] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Trailer box; 2. Protruding plate; 3. Mounting seat; 4. Bolt; 5. Washer; 6. Through hole; 7. Trailer door; 8. Rotating component; 9. Pin; 10. Connecting component; 11. Extrusion plate; 12. First groove; 13. First connecting rod; 14. Second connecting rod; 15. Spring; 16. Protrusion; 17. Second groove; 18. First slot; 19. Second slot; 20. Arc plate Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] A hinge structure for trailers, such as Figure 1-4 As shown, it includes a trailer box 1, a trailer door 7, and a hinge assembly installed between the trailer box 1 and the trailer door 7. The hinge assembly includes a fixed base 3 and a rotating part 8 rotatably connected to the bottom end of the fixed base 3 via a pin 9. A connector 10 is embedded in the fixed base 3. A first connecting rod 13 and a second connecting rod 14 are respectively installed at both ends of the connector 10. Both ends of the rotating part 8 are integrally formed with an arc plate 20. The second connecting rod 14 is respectively engaged with both ends of the arc plate 20.

[0020] The top of the trailer box 1 has an integrally formed protruding plate 2. The fixed seat 3 and the rotating part 8 are provided with through holes 6 in a rectangular array. A gasket 5 is provided on one side of the through hole 6. A bolt 4 is installed on the gasket 5. Multiple bolts 4 pass through the through hole 6 and are threaded into the protruding plate 2 and the rotating part 8 respectively. After the bolts 4 are tightened, the fixed seat 3 and the rotating part 8 are fixed to the protruding plate 2 and the trailer door 7 respectively.

[0021] Furthermore, the top of the fixed base 3 is symmetrically provided with a first waist groove 12 inclined at 45 degrees, and the bottom of the fixed base 3 is symmetrically provided with a vertically arranged second waist groove 17. The first connecting rod 13 and the second connecting rod 14 are respectively slidably inserted into the first waist groove 12 and the second waist groove 17. The top of the connecting member 10 is integrally formed with an extrusion plate 11. The two ends of the arc plate 20 are respectively provided with a first slot 18 and a second slot 19. The included angle between the first slot 18 and the second slot 19 is 90 degrees. The second connecting rod 14 is respectively inserted into the first slot 18 and the second slot 19. The first connecting rod 13 and the second connecting rod 14 are both secured with anti-detachment protrusions to prevent the first connecting rod 13 and the second connecting rod 14 from moving laterally in the fixed base 3. The bottom of the fixed base 3 is integrally formed with a protrusion 16. A tension spring is provided between the protrusion 16 and the second connecting rod 14. The two ends of the tension spring are respectively sleeved on the protrusion 16 and the second connecting rod 14. When the rotating part 8 rotates to 90 degrees, the tension spring pulls the second connecting rod 14 downwards, so that both ends of the second connecting rod 14 are embedded in the first slot 18, thereby maintaining axial positioning between the fixed seat 3 and the rotating part 8. When the trailer door 7 closes, it applies pressure to the extrusion plate 11, causing the extrusion plate 11 to drive the connecting part 10 to move. During the movement of the connecting part 10, the first connecting rod 13 tilts upwards in the first groove. The bottom end of the connecting part 10 drives the second connecting rod 14 to move out of the first slot 18. After the rotating part 8 rotates along the pin 9 to one side of the fixed seat 3, it releases the extrusion plate 11. The elastic force of the tension spring pulls the second connecting rod 14 into the second slot 19, which facilitates axial positioning of the rotated part 8 after rotation, thereby keeping the trailer door 7 stable when closing / opening, enabling the trailer door 7 to provide auxiliary support for the cargo and improving the stability of the trailer door 7 after closing.

[0022] The working principle of this utility model is as follows: When the rotating component 8 drives the trailer door 7 to rotate to 90 degrees and open, the tension spring pulls the second connecting rod 14 downward, so that both ends of the second connecting rod 14 are embedded in the first slot 18, thereby maintaining axial positioning between the fixed seat 3 and the rotating component 8. The trailer door 7 can provide auxiliary support for the cargo. When the trailer door 7 closes, it applies pressure to the pressing plate 11, causing the pressing plate 11 to drive the connecting component 10 to move. During the movement, the connecting component 10 causes the first connecting rod 13 to tilt upward in the first groove. The bottom end of the connecting component 10 drives the second connecting rod 14 to move out of the first slot 18. After the rotating component 8 rotates along the pin 9 to one side of the fixed seat 3, it releases the pressing plate 11. The elastic force of the tension spring pulls the second connecting rod 14 to be embedded in the second slot 19, which facilitates axial positioning of the rotated component 8 after rotation, thereby keeping the trailer door 7 stable when closing / opening, thus improving the stability of the trailer door 7 after closing.

[0023] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A hinge structure for a trailer, comprising a trailer box (1), a trailer door (7), and a hinge assembly installed between the trailer box (1) and the trailer door (7), characterized in that: The hinge assembly includes a fixed base (3) and a rotating component (8) rotatably connected to the bottom end of the fixed base (3) via a pin (9). A connector (10) is embedded in the fixed base (3). A first connecting rod (13) and a second connecting rod (14) are respectively installed at both ends of the connector (10). An arc-shaped plate (20) is integrally formed at both ends of the rotating component (8). The second connecting rod (14) is engaged with both ends of the arc-shaped plate (20).

2. The hinge structure for a trailer according to claim 1, characterized in that: The top of the trailer box (1) is integrally formed with a protruding plate (2), and the fixed seat (3) and the rotating part (8) are provided with through holes (6) in a rectangular array.

3. A trailer hinge structure according to claim 2, characterized in that: A gasket (5) is provided on one side of the through hole (6), and a bolt (4) is installed on the gasket (5). Multiple bolts (4) pass through the through hole (6) and are threaded into the convex plate (2) and the rotating part (8) respectively.

4. The hinge structure for a trailer according to claim 1, characterized in that: The top of the fixed seat (3) is symmetrically provided with a first waist groove (12) inclined at 45 degrees, and the bottom of the fixed seat (3) is symmetrically provided with a vertically arranged second waist groove (17).

5. A trailer hinge structure according to claim 4, characterized in that: The first connecting rod (13) and the second connecting rod (14) are slidably inserted into the first waist groove (12) and the second waist groove (17) respectively, and the top of the connector (10) is integrally formed with an extrusion plate (11).

6. A hinge structure for a trailer according to claim 5, characterized in that: The arc plate (20) has a first slot (18) and a second slot (19) at its two ends respectively. The angle between the first slot (18) and the second slot (19) is 90 degrees. The second connecting rod (14) is inserted into the first slot (18) and the second slot (19) respectively.

7. A trailer hinge structure according to claim 6, characterized in that: The bottom end of the fixed base (3) is integrally formed with a protrusion (16), and a tension spring is provided between the protrusion (16) and the second connecting rod (14). The two ends of the tension spring are respectively sleeved on the protrusion (16) and the groove at the center of the second connection.

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