A carriage structure with a dust-proof hinge

Abstract

The present invention discloses a carriage structure with a dust-proof hinge, belonging to the technical field of carriages, which includes a carriage body and a carriage door. The carriage door is connected to the carriage body through a hinge body. The hinge body includes a hinge block and a hinge base. The hinge block is connected and cooperated with the hinge base through a pin. Two bushings matched with the pin are fixedly arranged on the surface of the hinge base. An oil injection assembly for manually injecting oil and lubricating the rotating connection between the bushing and the pin is arranged on the surface of the hinge block. The beneficial effects of the present invention are as follows: By setting a first gear, a second gear, a third gear, a first ratchet, a second ratchet, a rotating shaft, an L-shaped tooth plate, a sliding rod, and a clamping hole, etc., after the hinge is used several times, the sliding rod will be clamped and cooperated with the clamping hole. The next time the hinge is used, the L-shaped tooth plate will be driven by the second ratchet to move, so that the L-shaped tooth plate drives the push rod and the piston to move, realizing the effect of automatically injecting oil and lubricating the rotating connection between the bushing and the pin.

Description

Technical Field

[0001] The present invention relates to the technical field of hinges, and particularly to a carriage structure with a dust-proof hinge. Background Art

[0002] As a mechanical device that connects two solids and allows relative rotation between them, hinges are widely used in various fields. In special-purpose vehicles (such as power vehicles, vending vehicles, etc.), door and window hinges are key components that connect the doors or windows to the carriage body. Their performance directly affects the use comfort and safety of the vehicle, and they are required to be reliable, flexible in opening and closing, and beautiful in appearance.

[0003] Most hinges of cargo container carriages are composed of hinge blocks, hinge bases, and pivot pins. The hinge blocks are installed on special-purpose vehicles, and the hinge bases are installed on the doors or windows, so that the doors or windows can be rotated open and closed. However, during the driving of special-purpose vehicles, there are many dust impurities in the air. After a long time, dust is likely to accumulate at the hinge rotation connection, resulting in poor flexibility of the hinge opening and closing. Summary of the Invention

[0004] The purpose of the present invention is to propose a carriage structure with a dust-proof hinge in order to solve the above technical problems.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A carriage structure with a dust-proof hinge includes a carriage body and a carriage door. The carriage door is connected to the carriage body through a hinge body. The hinge body includes a hinge block and a hinge base. The hinge block is connected and cooperated with the hinge base through a pivot pin. A plurality of mounting screws are provided through the surfaces of the hinge block and the hinge base. The number of pivot pins is two, and they respectively penetrate from both sides of the hinge block and are connected to the hinge base. Two shaft sleeves matched with the pivot pins are fixedly provided on the surface of the hinge base. An oil injection assembly for manually injecting oil and lubricating the rotation connection between the shaft sleeve and the pivot pin is provided on the surface of the hinge block;

[0007] The oil injection assembly includes a housing fixedly provided on the surface of the hinge block and an oil storage tank provided inside the housing. One end of each of the two shaft sleeves is fixedly provided with an oil inlet pipe. One-way valves are provided inside the two oil inlet pipes. A piston is slidably provided inside the oil storage tank. A push rod is movably penetrated through one end of the oil storage tank. The push rod is fixedly connected to the piston. An oil injection pipe is provided at the upper end of the oil storage tank. A sealing plug is provided at the upper end of the oil injection pipe. The other end of the oil storage tank is communicated with a three-way oil outlet pipe. The two output ends of the three-way oil outlet pipe are respectively connected and cooperated with the input ends of the two oil inlet pipes through rotary joints. A transmission member for automatically injecting oil and lubricating the rotation connection between the shaft sleeve and the pivot pin is provided inside the housing.

[0008] As a further description of the above technical solution:

[0009] The transmission member includes a rotating shaft rotatably disposed inside the housing and two support plates symmetrically fixed to the inner wall of the housing. The ratchet wheel is constrained at the rotational connection between the rotating shaft and the housing. A pawl cooperating with the constrained ratchet wheel is provided on the inner wall of the housing. A first gear is rotatably provided on the back sides of the two support plates through a hollow shaft. The end of the three-way oil outlet pipe is located inside the hollow shaft. A sliding cavity is formed at the opposite ends of the two shaft sleeves. A sliding rod is slidably connected to the inner wall of the sliding cavity through a spring. A second gear is fixedly sleeved on the outer side of the sliding rod. Clamping holes cooperating with the sliding rod are respectively formed on the back sides of the two first gears. First ratchet wheels respectively cooperating with the second gears are fixedly sleeved at both ends of the rotating shaft. A sleeve is rotatably sleeved on the middle part of the rotating shaft. A torsion spring is sleeved at the rotational connection between the sleeve and the rotating shaft. The spring constant of the torsion spring is smaller than that of the spring. A convex block is fixedly provided on the surface of the rotating shaft. A travel groove cooperating with the convex block is formed on the inner wall of the sleeve. Third gears respectively cooperating with the two first gears are fixedly sleeved at both ends of the sleeve. An L-shaped toothed plate is fixedly provided at the end of the push rod away from the piston. A second ratchet wheel cooperating with the L-shaped toothed plate is fixedly sleeved in the middle of the sleeve.

[0010] As a further description of the above technical solution:

[0011] The housing includes a first half-shell and a second half-shell. The first half-shell and the second half-shell are fixedly connected by screws. The second half-shell is fixedly connected to the hinge block through a fixing plate.

[0012] As a further description of the above technical solution:

[0013] The L-shaped toothed plate is in sliding contact with the outer surface of the fuel tank. An operating handle is provided at one end of the L-shaped toothed plate.

[0014] As a further description of the above technical solution:

[0015] The end of the sliding rod away from the spring is hemispherical. The depth value of the clamping hole is smaller than the radius value of the hemispherical end of the sliding rod.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0017] In the present invention, by providing shaft sleeves, an oil inlet pipe, a one-way valve, a fuel tank, a push rod, a piston and a three-way oil outlet pipe, when a worker squeezes the push rod to drive the piston to move, the effect of lubricating the rotational connection between the shaft sleeve and the shaft pin is achieved, effectively ensuring the smoothness during the use of the hinge;

[0018] In the present invention, by providing a first gear, a second gear, a third gear, a first ratchet, a second ratchet, a rotating shaft, an L-shaped toothed plate, a slide rod, and a clamping hole, etc., after the hinge is used several times, the slide rod will be clamped and engaged with the clamping hole. The next time the hinge is used, it will drive the L-shaped toothed plate to move through the second ratchet, so that the L-shaped toothed plate drives the push rod and the piston to move, achieving the effect of automatically lubricating the rotating connection between the shaft sleeve and the shaft pin with oil.

[0019] In the present invention, the housing is a detachable structure. When the staff conducts disassembly and inspection, they only need to remove the screws to repair the components inside the housing, which is convenient for operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shows the external view of the compartment according to an embodiment of the present invention;

[0021] Figure 2 Shows the external view of the door and window hinge according to an embodiment of the present invention;

[0022] Figure 3 Shows the exploded schematic view of the structure of the door and window hinge according to an embodiment of the present invention;

[0023] Figure 4 Shows the cross-sectional view of the shaft sleeve structure according to an embodiment of the present invention;

[0024] Figure 5 Shows the exploded schematic view of the structure of the oil injection assembly according to an embodiment of the present invention;

[0025] Figure 6 Shows the exploded schematic view of the structure of the transmission part according to an embodiment of the present invention;

[0026] Figure 7 Shows the schematic view of the rotating shaft structure according to an embodiment of the present invention;

[0027] Figure 8 Shows the cross-sectional view of the rotating shaft structure according to an embodiment of the present invention;

[0028] Figure 9 Shows the cross-sectional view of the fuel tank structure according to an embodiment of the present invention.

[0029] Legend: 1. Compartment body; 2. Compartment door; 3. Hinge block; 4. Hinge base; 5. First half shell; 6. Axle pin; 7. Mounting screw; 8. Bush; 9. Oil inlet pipe; 10. Slide bar; 11. Spring; 12. First gear; 13. Rotating shaft; 14. Support plate; 15. Second gear; 16. Clamping hole; 17. Oil storage tank; 18. Three-way oil outlet pipe; 19. Push rod; 20. L-shaped toothed plate; 21. First ratchet; 22. Third gear; 23. Second ratchet; 24. Piston; 25. Oil injection pipe; 26. Plug; 27. Check valve; 28. Stroke groove; 29. Protrusion; 30. Sleeve; 31. Second half shell; 32. Fixed plate. Detailed implementation

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the scope of protection of the present invention.

[0031] As Figures 1-9 shown, a carriage structure with a dust-proof hinge includes a compartment body 1 and a compartment door 2. The compartment door 2 is connected to the compartment body 1 through a hinge body. The hinge body includes a hinge block 3 and a hinge base 4. The hinge block 3 is connected and cooperated with the hinge base 4 through an axle pin 6. A plurality of mounting screws 7 penetrate through the surfaces of the hinge block 3 and the hinge base 4. The number of axle pins 6 is two and they penetrate through the two sides of the hinge block 3 respectively to be connected with the hinge base 4. Two bushes 8 that cooperate with the axle pins 6 are fixedly provided on the surface of the hinge base 4. An oil injection assembly for manually injecting oil and lubricating the rotating connection between the bush 8 and the axle pin 6 is provided on the surface of the hinge block 3.

[0032] The oil injection assembly includes a housing fixedly provided on the surface of the hinge block 3 and an oil storage tank 17 provided inside the housing. One end of each of the two bushes 8 is fixedly penetrated with an oil inlet pipe 9. Check valves 27 are provided inside the two oil inlet pipes 9. A piston 24 is slidably provided inside the oil storage tank 17. One end of the oil storage tank 17 is movably penetrated with a push rod 19. The push rod 19 is fixedly connected to the piston 24. An oil injection pipe 25 is provided at the upper end of the oil storage tank 17. A plug 26 is provided at the upper end of the oil injection pipe 25. The other end of the oil storage tank 17 is communicated with a three-way oil outlet pipe 18. The two output ends of the three-way oil outlet pipe 18 are respectively connected and cooperated with the input ends of the two oil inlet pipes 9 through rotary joints. A transmission member for automatically injecting oil and lubricating the rotating connection between the bush 8 and the axle pin 6 is provided inside the housing. During use, by squeezing the push rod 19 to drive the piston 24 to move, the lubricating oil in the oil storage tank 17 sequentially passes through the three-way oil outlet pipe 18, the oil inlet pipe 9 and the check valve 27 and enters the rotating connection between the bush 8 and the axle pin 6, playing a role in lubrication and ensuring the smoothness of the hinge base 4 during operation.

[0033] Furthermore, the transmission member includes a rotating shaft 13 rotatably disposed inside the housing and two support plates 14 symmetrically fixed to the inner wall of the housing. The rotating shaft 13 is constrained by a ratchet wheel at the rotating connection with the housing. A pawl cooperating with the constrained ratchet wheel is provided on the inner wall of the housing. On the opposite sides of the two support plates 14, a first gear 12 is rotatably provided through a hollow shaft. The end of the three-way oil outlet pipe 18 is located inside the hollow shaft. A sliding cavity is formed at the opposite ends of the two shaft sleeves 8. A sliding rod 10 is slidably connected to the inner wall of the sliding cavity through a spring 11. A second gear 15 is fixedly sleeved on the outer side of the sliding rod 10. Clamping holes 16 cooperating with the sliding rod 10 are respectively formed on the opposite sides of the two first gears 12. First ratchets 21 respectively cooperating with the second gears 15 are fixedly sleeved at both ends of the rotating shaft 13. A sleeve 30 is rotatably sleeved in the middle of the rotating shaft 13. A torsion spring is sleeved at the rotating connection between the sleeve 30 and the rotating shaft 13. The spring constant of the torsion spring is smaller than that of the spring 11. A convex block 29 is fixedly provided on the surface of the rotating shaft 13. A travel groove 28 cooperating with the convex block 29 is formed on the inner wall of the sleeve 30. Third gears 22 respectively cooperating with the two first gears 12 are fixedly sleeved at both ends of the sleeve 30. An L-shaped toothed plate 20 is fixedly provided at the end of the push rod 19 away from the piston 24. A second ratchet 23 cooperating with the L-shaped toothed plate 20 is fixedly sleeved in the middle of the sleeve 30. During use, when the sliding rod 10 is misaligned with the clamping hole 16, the end of the sliding rod 10 is in sliding contact with the surface of the first gear 12, and the second gear 15 and the first ratchet 21 are located in the same vertical plane. When the hinge is in use, the hinge base 4 deflects back and forth (as shown in the attached Figure 1As described above, during the opening process of the door and window, the hinge base 4 rotates counterclockwise. The counterclockwise rotation of the hinge base 4 drives the bushing 8 to rotate counterclockwise. The counterclockwise rotation of the bushing 8 drives the second gear 15 to revolve counterclockwise and gradually approach the first ratchet 21. Under the mutual cooperation of the second gear 15 and the first ratchet 21, the first ratchet 21 drives the rotating shaft 13 to rotate clockwise. The rotation of the rotating shaft 13 drives the sleeve 30 to rotate clockwise. The clockwise rotation of the sleeve 30 drives the third gear 22 and the second ratchet 23 to rotate clockwise. The clockwise rotation of the second ratchet 23 does not drive the L-shaped toothed plate 20 to move. Under the mutual cooperation of the third gear 22 and the first gear 12, the first gear 12 rotates counterclockwise, thereby driving the clamping hole 16 to deflect. Then, when closing the door and window, the hinge base 4 rotates clockwise. The clockwise rotation of the hinge base 4 does not drive the first ratchet 21 and the rotating shaft 13 to rotate. In the above process, after each opening and closing of the door and window, a relative displacement is generated between the clamping hole 16 and the slide bar 10. After the door and window are used for a long time, that is, after multiple opening and closing operations, the slide bar 10 and the clamping hole 16 will be aligned and clamped. When the slide bar 10 is clamped into the clamping hole 16 under the action of the spring 11, at this time, the second gear 15 and the first ratchet 21 are not in the same vertical plane. Due to the clamping of the slide bar 10 and the clamping hole 16, when the door and window are opened, the hinge base 4 rotates counterclockwise, which will directly drive the first gear 12 to rotate counterclockwise by the bushing 8. Under the mutual cooperation of the first gear 12 and the third gear 22, the third gear 22 and the rotating shaft 13 rotate clockwise. Then, when the door and window are closed, the hinge base 4 rotates clockwise, which will directly drive the first gear 12 to rotate clockwise by the bushing 8. Under the mutual cooperation of the first gear 12 and the third gear 22, since the rotating shaft 13 is restricted by the restraint ratchet and cannot rotate counterclockwise, in this process, the third gear 22 will drive the sleeve 30 to rotate counterclockwise. The counterclockwise rotation of the sleeve 30 drives the second ratchet 23 to rotate counterclockwise. The counterclockwise rotation of the second ratchet 23 cooperates with the L-shaped toothed plate 20, causing the L-shaped toothed plate 20 to move, thereby driving the push rod 19 to move. The movement of the push rod 19 drives the piston 24 to move, squeezing out oil. When the sleeve 30 is restricted by the convex block 29 and the stroke groove 28 and cannot continue to rotate counterclockwise, at this time, the first gear 12 cannot continue to rotate clockwise either. And when the bushing 8 continues to rotate clockwise, one end of the slide bar 10 will withdraw from the clamping hole 16. At this time, the spring 11 is compressed. When one end of the slide bar 10 withdraws from the clamping hole 16, under the action of the torsion spring reset, the sleeve 30 rotates clockwise to reset. The clockwise rotation of the sleeve 30 drives the third gear 22 to rotate clockwise. The clockwise rotation of the third gear 22 drives the first gear 12 to rotate counterclockwise, causing the clamping hole 16 to shift to the side away from the slide bar 10, that is, when opening the door and window next time, the slide bar 10 will not be clamped and cooperate with the clamping hole 16. And so on. After multiple openings and closings, the clamping hole 16 is continuously deflected and adjusted and then clamped and cooperated with the slide bar 10 again.After the hinge is used for several times, the effect of automatically replenishing lubricating oil at the rotating connection between the bushing 8 and the pin 6 is achieved.

[0034] Furthermore, the housing includes a first half-shell 5 and a second half-shell 31. The first half-shell 5 and the second half-shell 31 are fixedly connected by screws. The second half-shell 31 is fixedly connected to the hinge block 3 through a fixing plate 32, which facilitates the staff to disassemble the first half-shell 5 from the second half-shell 31 and is convenient for the staff to repair and replace the components inside the housing.

[0035] Furthermore, the L-shaped toothed plate 20 is in sliding contact with the outer surface of the oil storage tank 17. One end of the L-shaped toothed plate 20 is provided with an operating handle, which effectively ensures the stability of the L-shaped toothed plate 20 during the moving process.

[0036] Furthermore, the end of the sliding rod 10 away from the spring 11 is hemispherical, and the depth value of the clamping hole 16 is less than the radius value of the hemispherical end of the sliding rod 10, ensuring that when the hemispherical end of the sliding rod 10 is squeezed, it can be disengaged from the clamping hole 16.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A carriage structure with a dust-proof hinge, comprising a carriage body and a carriage door. The carriage door is connected to the carriage body through a hinge body. The hinge body includes a hinge block and a hinge base. The hinge block is connected and cooperated with the hinge base through a pin. A plurality of mounting screws penetrate through the surfaces of the hinge block and the hinge base. It is characterized in that, The number of the shaft pins is two, and they respectively penetrate through both sides of the hinge block and are connected to the hinge base. Two bushings that are matched with the shaft pins are fixedly arranged on the surface of the hinge base. An oil injection assembly for manually injecting oil and lubricating the rotating connection between the bushing and the shaft pin is arranged on the surface of the hinge block. The oil injection assembly includes a housing fixedly arranged on the surface of the hinge block and an oil storage tank arranged inside the housing. One end of each of the two bushings is fixedly penetrated and provided with an oil inlet pipe. One-way valves are arranged inside the two oil inlet pipes. A piston is slidably arranged inside the oil storage tank. A push rod is movably penetrated through one end of the oil storage tank. The push rod is fixedly connected with the piston. An oil injection pipe is arranged at the upper end of the oil storage tank. A plug is arranged at the upper end of the oil injection pipe. The other end of the oil storage tank is communicated and provided with a three-way oil outlet pipe. The two output ends of the three-way oil outlet pipe are respectively connected and matched with the input ends of the two oil inlet pipes through rotary joints. A transmission member for automatically injecting oil and lubricating the rotating connection between the bushing and the shaft pin is arranged inside the housing. The transmission member includes a rotating shaft rotatably arranged inside the housing and two support plates symmetrically and fixedly arranged on the inner wall of the housing. A restraint ratchet is arranged at the rotating connection of the rotating shaft and the housing. A pawl that is matched with the restraint ratchet is arranged on the inner wall of the housing. A first gear is rotatably arranged on the opposite sides of the two support plates through a hollow shaft. The end of the three-way oil outlet pipe is located inside the hollow shaft. A sliding cavity is formed at one end of each of the two bushings facing each other. A sliding rod is slidably connected to the inner wall of the sliding cavity through a spring. A second gear is fixedly sleeved on the outer side of the sliding rod. Clamping holes that are matched with the sliding rod are respectively formed on the opposite sides of the two first gears. First ratchets that are respectively matched with the second gears are fixedly sleeved on both ends of the rotating shaft. A sleeve is rotatably sleeved on the middle part of the rotating shaft. A torsion spring is arranged at the rotating connection of the sleeve and the rotating shaft. The spring constant of the torsion spring is smaller than that of the spring. A convex block is fixedly arranged on the surface of the rotating shaft. A travel groove that is matched with the convex block is formed on the inner wall of the sleeve. Third gears that are respectively matched with the two first gears are fixedly sleeved on both ends of the sleeve. An L-shaped toothed plate is fixedly arranged at the end of the push rod away from the piston. A second ratchet that is matched with the L-shaped toothed plate is fixedly sleeved on the middle part of the sleeve.

2. A carriage structure with a dust-proof hinge according to claim 1, characterized in that, The housing includes a first half shell and a second half shell. The first half shell and the second half shell are fixedly connected by screws. The second half shell is fixedly connected to the hinge block through a fixing plate.

3. A carriage structure with a dust-proof hinge according to claim 1, characterized in that, The L-shaped toothed plate is in sliding contact with the outer surface of the oil storage tank. An operation handle is arranged at one end of the L-shaped toothed plate.

4. A carriage structure with a dust-proof hinge according to claim 2, characterized in that, One end of the sliding rod away from the spring is hemispherical. The depth value of the clamping hole is smaller than the radius value of the hemispherical end of the sliding rod.

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