Limiting mechanism for automobile tail door hinge

Abstract

The utility model provides an automobile tail door hinge limiting mechanism, which relates to the technical field of tail door hinges, and comprises a hinge base and a rotating shaft, the top end of the hinge base is fixedly provided with a hinge support frame, the surface of the hinge support frame is provided with an insertion groove, and the surface of the hinge base is provided with a fixed screw hole in a penetrating manner. By arranging the hinge base, the rotating shaft, the hinge supporting frame, the inserting groove and the fixing screw hole structure, when equipment is used, the cam and the limiting groove are arranged for matched movement, the opening and closing angle of the tail door can be controlled, when the tail door is opened to a certain angle, effective limiting can be provided, excessive opening of the tail door is avoided, and the service life of the tail door is prolonged. And collision with surrounding parts is prevented, damage is avoided, and meanwhile accidental injuries to operators or surrounding personnel can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of tailgate hinge technology, and in particular to a tailgate hinge limiting mechanism for automobiles. Background Technology

[0002] In the early stages of automotive development, car structures were relatively simple, and tailgate designs were also quite basic. At that time, tailgates primarily served basic storage needs, and their opening and closing methods were rudimentary, typically relying on simple hinges without dedicated limiting mechanisms. The opening and closing angle of the tailgate depended entirely on manual control, which was neither convenient nor safe, easily leading to accidental slamming or over-opening, causing injury to the user and potentially damaging the tailgate and the car body. As automotive technology advanced, people began to realize the need for some control over tailgate opening and closing. The earliest limiting methods were likely simple mechanical obstructions, such as installing rubber or wooden blocks at appropriate locations on the tailgate and the car body. When the tailgate opened to a certain angle, these obstructions would contact the tailgate, thus limiting further opening.

[0003] However, in terms of traditional equipment, early car tailgate hinges had relatively simple structures, typically using basic connection methods that could only achieve the basic opening and closing function of the tailgate, with very limited ability to precisely control the opening angle. For example, some traditional hinges could not provide effective restraint when the tailgate was opened to a certain angle, causing the tailgate to potentially open excessively. This not only made it easy for the tailgate to collide with surrounding components and cause damage, but also posed certain safety hazards, potentially causing accidental injury to the operator or those nearby, thus requiring improvement. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] The present invention adopts the following technical solution: a car tailgate hinge limiting mechanism, including a hinge base and a rotating shaft, a hinge support frame is fixedly installed on the top of the hinge base, an insertion groove is opened on the surface of the hinge support frame, and a fixing screw hole is opened through the surface of the hinge base.

[0006] Preferably, the hinge support frame has an internal groove, a gear 1 is fitted inside the groove, a limit block is fixedly installed on the internal surface of the gear 1, a rotating rod is fitted inside the groove, a gear 2 is fixedly installed on the surface of the rotating rod, a cam is fixedly installed at the other end of the rotating rod, a torsion spring is fitted on the outer surface of the rotating rod, a limit groove is formed on the surface of the rotating shaft, a fixing groove is formed on the surface of the rotating shaft, a washer is fitted on the outer surface of the rotating shaft, a spring 1 is fixedly installed on the surface of the washer, and a fixing nut is threaded to the other end of the rotating shaft. Here, the limit block fixedly installed on the internal surface of gear 1 cooperates with the limit groove on the surface of the rotating shaft to limit the rotation angle of the rotating shaft, ensuring that the tailgate of the car opens and closes within a specific angle range, improving the safety and stability of use.

[0007] Preferably, the insertion slot has an operating slot inside, and a brush is fitted inside the operating slot. A spring is fixedly installed at the top of the brush. The hinge support frame has a moving slot on its surface, and a pressing plate is fitted inside the moving slot. A moving rod is fixedly installed at the rear end of the pressing plate, and a piston is fixedly installed at the other end of the moving rod. Lubricating oil is fitted inside the moving slot, and a delivery pipe is fixedly installed at one end of the moving slot. An oil outlet groove is formed on the bottom surface of the brush. Here, the operating slot inside the insertion slot is used to install the brush. When pressure is applied to the pressing plate, the pressing plate pushes the piston through the moving rod, causing the lubricating oil in the moving slot to be delivered to the brush through the delivery pipe and flow out from the oil outlet groove at the bottom of the brush, lubricating the contact parts of the rotating shaft, reducing friction and wear, and extending the service life of the components.

[0008] Preferably, both the hinge base and the hinge support frame have chamfered edges at their surfaces, and both surfaces are zinc-plated. This chamfering at the edges of the hinge base and hinge support frame prevents sharp edges from injuring operators and improves safety during use.

[0009] Preferably, the surface of gear one meshes with the surface of gear two, one end of the torsion spring is fixedly connected to the surface of the groove, and the other end of the torsion spring is fixedly connected to the surface of gear two. Here, the meshing of the surfaces of gear one and gear two ensures the stability and accuracy of power transmission, enabling the rotating rod to rotate in the expected manner, thereby achieving precise control of the rotation angle of the shaft.

[0010] Preferably, the rotating shaft is sleeved inside the gear and the insertion slot. The fixing slot has an irregular shape, and there are three sets of limiting slots distributed circumferentially on the surface of the rotating shaft. The maximum rotation angle of the cam is 100 degrees. Here, the irregular shape of the fixing slot can prevent the washer and spring from rotating freely on the rotating shaft, ensuring their positional stability and thus better playing a fixing and buffering role.

[0011] Preferably, the springs are in multiple sets and circumferentially distributed on the surface of the washer. Both ends of each spring are connected and fixed to the surface of the washer. The number of washers and springs are both in two sets and symmetrically distributed on the surface of the shaft. Here, the multiple sets of circumferentially distributed springs provide elastic support on the washer surface, enhancing the stability and cushioning performance of the shaft installation.

[0012] Preferably, the number of springs two is multiple and symmetrically distributed inside the operating groove. One end of each spring two is connected and fixed to the surface of the operating groove, and the other end is connected and fixed to the top surface of the brush. The other end of the conveying pipe is connected and fixed to the surface of the brush. The number of oil outlet grooves is multiple and distributed crosswise with the brush bristles. Here, the multiple symmetrically distributed springs two enable the brush to move stably up and down within the operating groove and reliably return to its original position without external force, ensuring the contact state between the brush and the inside of the insertion groove, ready for lubrication operation at any time.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting a hinge base, a rotating shaft, a hinge support frame, an insertion slot, and a fixing screw hole structure, the opening and closing angle of the tailgate can be controlled by the coordinated movement of multiple structures such as the cam and the limiting slot when the equipment is in use. When the tailgate is opened to a certain angle, it can provide an effective limit to prevent the tailgate from being opened too much, prevent collisions with surrounding parts, avoid damage, and prevent accidental injury to the operator or surrounding personnel.

[0015] 2. In this utility model, by setting up an operating groove, a brush, a second spring, a moving groove, a pressing plate, a moving rod, a piston, lubricating oil, a conveying pipe, and an oil outlet groove, when the equipment is in use, the operating groove inside the insertion groove is used to install the brush. When pressure is applied to the pressing plate, the pressing plate pushes the piston through the moving rod, so that the lubricating oil in the moving groove is delivered to the brush through the conveying pipe and flows out from the oil outlet groove at the bottom of the brush, lubricating the contact parts between the insertion groove and the rotating shaft, reducing friction and wear, and extending the service life of the components. At the same time, by setting up the second spring structure, the rotating shaft is always kept in close contact with the surface of the brush. The structure composed of the moving groove, pressing plate, moving rod, and piston components facilitates the control of the delivery of lubricating oil, realizes on-demand lubrication, improves the efficiency of lubricating oil use, and also facilitates the maintenance and operation of the lubrication system. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a tailgate hinge limiting mechanism for automobiles is provided for this utility model.

[0017] Figure 2 This utility model provides an exploded structural diagram of a car tailgate hinge limiting mechanism.

[0018] Figure 3 A top view schematic diagram of a car tailgate hinge limiting mechanism is provided for this utility model.

[0019] Figure 4 A cross-sectional structural diagram of a car tailgate hinge limiting mechanism is provided for this utility model.

[0020] Figure 5 A schematic diagram of the rotating shaft structure of a car tailgate hinge limiting mechanism is provided for this utility model.

[0021] Figure 6 This utility model provides a partial structural schematic diagram of a car tailgate hinge limiting mechanism;

[0022] Figure 7 This utility model proposes a tailgate hinge limiting mechanism. Figure 2 Enlarged view of point A in the middle;

[0023] Figure 8 This utility model proposes a tailgate hinge limiting mechanism. Figure 3 Enlarged view at point B in the middle;

[0024] Figure 9 This utility model proposes a tailgate hinge limiting mechanism. Figure 6 Enlarged view at point C;

[0025] Figure 10 This utility model proposes a tailgate hinge limiting mechanism. Figure 4 Enlarged view of point D in the middle.

[0026] Legend:

[0027] 1. Hinge base; 2. Rotating shaft; 11. Hinge support frame; 12. Insertion slot; 13. Fixing screw hole; 21. Groove; 22. Gear 1; 23. Limiting block; 24. Rotating rod; 25. Gear 2; 26. Cam; 27. Torsion spring; 28. Limiting groove; 29. ​​Fixing groove; 291. Washer; 292. Spring 1; 293. Fixing nut; 31. Operating groove; 32. Brush; 33. Spring 2; 34. Moving groove; 35. Pressing plate; 36. Moving rod; 37. Piston; 38. Lubricating oil; 39. Delivery pipe; 321. Oil outlet groove. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0030] Example 1

[0031] Please see Figures 1-9This utility model provides a technical solution: a tailgate hinge limiting mechanism for automobiles, including a hinge base 1 and a rotating shaft 2. A hinge support frame 11 is fixedly installed at the top of the hinge base 1. An insertion slot 12 is formed on the surface of the hinge support frame 11. A fixing screw hole 13 is formed through the surface of the hinge base 1. A groove 21 is formed inside the hinge support frame 11. A gear 22 is fitted inside the groove 21. A limiting block 23 is fixedly installed on the inner surface of the gear 22. A rotating rod 24 is fitted inside the groove 21. A gear 25 is fixedly installed on the surface of the rotating rod 24. A cam 26 is fixedly installed at the other end of the rotating rod 24. The outer surface of the rotating rod 24... A torsion spring 27 is fitted onto the shaft 2. A limiting groove 28 and a fixing groove 29 are formed on the surface of the shaft 2. A washer 291 is fitted onto the outer surface of the shaft 2, and a spring 292 is fixedly installed on the surface of the washer 291. A fixing nut 293 is threaded to the other end of the shaft 2. When the tailgate of the car is opened or closed, the tailgate drives the shaft 2 to rotate. The rotation of the shaft 2 drives the gear 22 to rotate through the engagement of the limiting groove 28 and the limiting block 23. The gear 22 drives the gear 25 that meshes with it to rotate. The rotation of the gear 25 causes the rotating rod 24 to rotate. The rotation of the rotating rod 24 drives the cam 26 to rotate. The cam 26 plays a specific limiting or buffering role during the rotation. At the same time, when the external force disappears, the elastic force of the torsion spring 27 resets the rotating rod 24 and the gear 25, ensuring the consistency and reliability of the tailgate opening and closing angle.

[0032] Please see Figures 1-10Both the hinge base 1 and the hinge support frame 11 have chamfered edges on their surfaces. Both surfaces are zinc-plated. The surface of gear 1 22 meshes with the surface of gear 25. One end of the torsion spring 27 is connected and fixed to the surface of the groove 21, and the other end of the torsion spring 27 is connected and fixed to the surface of gear 25. The rotating shaft 2 is fitted inside gear 1 22 and the insertion slot 12. The fixing slot 29 has an irregular shape. There are three sets of limiting slots 28, which are circumferentially distributed on the surface of the rotating shaft 2. The maximum rotation angle of the cam 26 is 100 degrees. There are multiple sets of springs 292, which are circumferentially distributed on the surface of the washer 291. Both ends of spring 292 are fixedly connected to the surface of gasket 291. There are two sets of gaskets 291 and spring 292, symmetrically distributed on the surface of the rotating shaft 2. Multiple sets of spring 33 are symmetrically distributed inside the operating groove 31. One end of spring 33 is fixedly connected to the surface of the operating groove 31, and the other end is fixedly connected to the top surface of brush 32. The other end of the delivery pipe 39 is fixedly connected to the surface of brush 32. Multiple sets of oil outlet grooves 321 are distributed crosswise with the bristles of brush 32. The delivery pipe 39 is fixedly connected to the surface of brush 32, ensuring that lubricating oil 38 can be accurately delivered to brush 32. The multiple sets of oil outlet grooves 321, distributed crosswise with the bristles of brush 32, allow lubricating oil 38 to be more evenly applied to the contact area between the insertion groove 12 and the rotating shaft 2, improving lubrication, reducing friction between components, extending the service life of components, and ensuring the efficiency and reliability of lubrication operation.

[0033] Example 2

[0034] Please see Figures 3-4 , Figure 6 , Figures 8-10 An operating groove 31 is provided inside the insertion slot 12. A brush 32 is fitted inside the operating groove 31. A spring 33 is fixedly installed at the top of the brush 32. A moving groove 34 is provided on the surface of the hinge support frame 11. A pressing plate 35 is fitted inside the moving groove 34. A moving rod 36 is fixedly installed at the rear end of the pressing plate 35. A piston 37 is fixedly installed at the other end of the moving rod 36. Lubricating oil 38 is fitted inside the moving groove 34. A delivery pipe 39 is fixedly installed at one end of the moving groove 34. The bottom surface of the brush 32 is... An oil outlet groove 321 is provided. When it is necessary to lubricate the contact area between the insertion groove 12 and the rotating shaft 2, the pressing plate 35 in the moving groove 34 is pressed. The pressing plate 35 drives the moving rod 36 to move. The moving rod 36 drives the piston 37 to move in the moving groove 34. The piston 37 pushes the lubricating oil 38 in the moving groove 34, so that the lubricating oil 38 is delivered to the brush 32 through the delivery pipe 39. The lubricating oil 38 then flows out from the oil outlet groove 321 at the bottom of the brush 32 and is evenly applied to the contact area between the insertion groove 12 and the rotating shaft 2 to achieve the lubrication effect.

[0035] Working principle: When the tailgate of the car is opened or closed, the tailgate drives the rotating shaft 2 to rotate. The rotation of the rotating shaft 2 drives the gear 1 22 to rotate through the cooperation of the limiting groove 28 and the limiting block 23. The gear 1 22 drives the gear 25 that meshes with it to rotate. The rotation of the gear 25 causes the rotating rod 24 to rotate. The rotation of the rotating rod 24 drives the cam 26 to rotate. The cam 26 plays a specific limiting or buffering role during the rotation process. Meanwhile, when the external force disappears, the elastic force of the torsion spring 27 resets the rotating rod 24 and gear 25, ensuring the consistency and reliability of the tailgate opening and closing angle. When it is necessary to lubricate the contact area between the insertion slot 12 and the rotating shaft 2, the pressing plate 35 in the moving slot 34 is pressed. The pressing plate 35 drives the moving rod 36 to move, and the moving rod 36 drives the piston 37 to move in the moving slot 34. The piston 37 pushes the lubricating oil 38 in the moving slot 34, so that the lubricating oil 38 is delivered to the brush 32 through the delivery pipe 39. The lubricating oil 38 then flows out from the oil outlet groove 321 at the bottom of the brush 32 and is evenly applied to the contact area between the insertion slot 12 and the rotating shaft 2 to achieve the lubrication effect.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A kind of automobile tail door hinge limiting mechanism, including hinge base (1) and pivot (2), it is characterized in that: A hinge support frame (11) is fixedly installed at the top of the hinge base (1). The surface of the hinge support frame (11) is provided with an insertion slot (12), and a fixing screw hole (13) is provided through the surface of the hinge base (1). A groove (21) is provided inside the hinge support frame (11). A gear (22) is fitted inside the groove (21). A limit block (23) is fixedly installed on the inner surface of the gear (22). A rotating rod (24) is fitted inside the groove (21). Gear 2 (25) is fixedly installed on the surface of the rotating rod (24), cam (26) is fixedly installed on the other end of the rotating rod (24), torsion spring (27) is sleeved on the outer surface of the rotating rod (24), limit groove (28) is opened on the surface of the rotating shaft (2), fixing groove (29) is opened on the surface of the rotating shaft (2), washer (291) is sleeved on the outer surface of the rotating shaft (2), spring 1 (292) is fixedly installed on the surface of the washer (291), and fixing nut (293) is threadedly connected to the other end of the rotating shaft (2).

2. The check mechanism of the tailgate hinge of a vehicle according to claim 1, wherein: An operating groove (31) is provided inside the insertion slot (12). A brush (32) is fitted inside the operating groove (31). A spring (33) is fixedly installed at the top of the brush (32). A moving groove (34) is provided on the surface of the hinge support frame (11). A pressing plate (35) is fitted inside the moving groove (34). A moving rod (36) is fixedly installed at the rear end of the pressing plate (35). A piston (37) is fixedly installed at the other end of the moving rod (36). Lubricating oil (38) is fitted inside the moving groove (34). A delivery pipe (39) is fixedly installed at one end of the moving groove (34). An oil outlet groove (321) is provided on the bottom surface of the brush (32).

3. The check mechanism of the tailgate hinge of a vehicle according to claim 1, wherein: The hinge base (1) and the hinge support frame (11) are both chamfered at their surface edges, and the surfaces of the hinge base (1) and the hinge support frame (11) are both plated with zinc.

4. The check mechanism of the tailgate hinge of a vehicle according to claim 1, wherein: The surface of gear one (22) meshes with the surface of gear two (25), one end of the torsion spring (27) is connected and fixed to the surface of the groove (21), and the other end of the torsion spring (27) is connected and fixed to the surface of gear two (25).

5. The check mechanism of the tailgate hinge of a vehicle according to claim 1, wherein: The rotating shaft (2) is fitted inside the gear (22) and the insertion slot (12). The fixed slot (29) is irregular in shape. The number of limiting slots (28) is three sets and they are distributed in a circle on the surface of the rotating shaft (2). The maximum rotation angle of the cam (26) is 100 degrees.

6. The check mechanism of the tailgate hinge of a vehicle according to claim 1, wherein: The number of springs (292) is multiple and they are distributed circumferentially on the surface of the pad (291). Both ends of the springs (292) are connected and fixed to the surface of the pad (291). The number of pads (291) and springs (292) are two and they are symmetrically distributed on the surface of the rotating shaft (2).

7. The check mechanism of the tailgate hinge of a vehicle according to claim 2, wherein: The number of springs (33) is multiple and they are symmetrically distributed inside the operating groove (31). One end of the spring (33) is connected and fixed to the surface of the operating groove (31), and the other end of the spring (33) is connected and fixed to the top surface of the brush (32). The other end of the conveying pipe (39) is connected and fixed to the surface of the brush (32). The number of oil outlet grooves (321) is multiple and they are distributed crosswise with the bristles of the brush (32).

Images