A mechanism capable of adjusting the rotation center position of a hinge

Abstract

The present invention discloses a mechanism for adjusting the center of rotation of a hinge, comprising an upper hinge, a lower hinge, a flange, and a rotating plug. One end of the upper hinge is provided with an interface for connecting to a door leaf, and the other end of the upper hinge is rotatably connected to the upper end of the lower hinge to form a rotating pair, with the rotation center of the rotating pair being the center of rotation of the hinge. The upper end of the flange is fixed to the vehicle body, the middle portion of the lower hinge is embedded in a square hole in the center of a guide seat, the guide seat is fixed to the vehicle body, and the bottom of the lower hinge is located in the inner cavity of the flange. A rotating plug is provided below the bottom of the lower hinge, the top of the rotating plug supports the bottom of the lower hinge, the outer wall of the rotating plug is threadedly connected to the inner wall of the flange, the lower portion of the rotating plug extends outside the flange, and the protruding end is fixedly connected to a rotating disk. A rubber seat is installed between the bottom of the lower hinge and the vehicle body, and a compression spring is embedded in the rubber seat. The present invention solves the problem of hinge adjustment being time-consuming, labor-intensive, and requiring a large amount of repetitive physical effort, thereby improving the practicality and reliability of the equipment.

Description

Technical Field

[0001] The invention relates to a mechanism capable of adjusting the rotation center position of a hinge. Background Art

[0002] Hinge is an important part of the door of special vehicles. It is an important tool to connect the door frame and the door leaf. It plays the role of bearing weight and allowing the door to open and close smoothly. Hinges are usually installed on the door of special vehicles with standard parts such as bolts, such as Figure 1 As shown in the figure, welding deformation during assembly and aging of the sealing rubber over time can affect the performance of special vehicle doors. Therefore, vehicle doors often require adjustment during manufacturing and use. The typical adjustment method involves gradually adding shims to the bottom of the hinge to raise the hinge's rotation center to the appropriate height. This process requires numerous repetitive operations and tests, creating inconveniences in the manufacture and use of special vehicles. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a mechanism which has a simple structure and reliable operation and can adjust the rotation center position of a hinge.

[0004] The technical solution of the present invention to solve the above problems is: a mechanism with adjustable hinge rotation center position, comprising an upper hinge, a lower hinge, a flange and a rotating plug, one end of the upper hinge is provided with an interface for connecting to the door leaf, and the other end of the upper hinge is rotatably connected to the upper end of the lower hinge through a pin shaft to form a rotating pair, and the rotation center of the rotating pair is the rotation center of the hinge; the upper end of the flange is fixed to the vehicle body, the middle part of the lower hinge is embedded in the square hole in the center of the guide seat, the guide seat is fixed to the vehicle body, and the bottom of the lower hinge is located in the inner cavity of the flange; a rotating plug is provided below the bottom of the lower hinge, the top of the rotating plug supports the bottom of the lower hinge, the outer wall of the rotating plug is threadedly connected to the inner wall of the flange, the lower part of the rotating plug extends out of the flange and the protruding end is fixedly connected to a turntable, a rubber seat is assembled between the bottom of the lower hinge and the vehicle body, and a compression spring is embedded in the rubber seat so that the lower hinge and the rotating plug always keep in contact.

[0005] The above-mentioned mechanism for adjusting the hinge rotation center position, the upper hinge is provided with a through-hole interface corresponding to the through-hole of the door leaf at one end, and the connection with the door leaf is achieved by a first bolt; the other end of the upper hinge is provided with a pair of penetrating first through holes, corresponding to the second through holes of the lower hinge, and the connection between the upper and lower hinges is completed and a rotating pair is formed through the cooperation of the pin shaft.

[0006] The above-mentioned mechanism for adjusting the center position of hinge rotation is characterized in that a second through hole corresponding to the first through hole of the upper hinge is provided at the top of the lower hinge, and the middle part of the lower hinge is a rectangular structure, the length and width of which are smaller than the size of the square hole in the middle of the guide seat; the bottom end of the lower hinge is a column, the outer diameter of the column is larger than the size of the square hole in the middle of the guide seat and smaller than the inner diameter of the flange cavity; the outer ring of the bottom of the column has a stop step, and the stop step is embedded in the inner cavity of the rotating plug; a threaded blind hole is provided at the center of the bottom of the column.

[0007] The above-mentioned mechanism for adjusting the center position of hinge rotation, the guide seat is a rectangular parallelepiped structure, directly welded to the vehicle body, and a square hole is opened in the middle of the guide seat with a size larger than the length and width of the rectangular parallelepiped in the middle of the lower hinge.

[0008] The above-mentioned mechanism for adjusting the center position of rotation of the hinge, the flange is generally a T-shaped hollow cylindrical structure, and a plurality of third through holes are opened on the top of the flange, the third through holes correspond to the fourth through holes opened on the vehicle body, and the connection with the vehicle body is achieved by a threaded seat and a second bolt; the inner cavity of the flange is divided into three stages from top to bottom, specifically the smooth surface stage, the trapezoidal thread stage, and the rough surface stage, among which the smooth surface stage is the assembly part of the rubber seat and the flange, the trapezoidal thread stage is the part where the trapezoidal internal thread of the inner cavity wall of the flange is engaged with the trapezoidal external thread on the outside of the rotating plug, and the rough surface stage is the part where the trapezoidal external thread on the outside of the rotating plug reaches the bottom of the inner cavity of the flange; there is a boss at the bottom of the flange, the height of the boss limits the range of motion of the rotating plug, and a guide through hole for the lower part of the rotating plug to pass through is provided in the center of the boss.

[0009] The above-mentioned mechanism for adjusting the center position of rotation of the hinge, the rotating plug is generally a T-shaped hollow cylindrical structure, and a trapezoidal external thread is provided on the outer side of the upper half of the rotating plug, which corresponds to the trapezoidal internal thread provided on the inner wall of the flange; the outer diameter of the lower half of the rotating plug is smaller than the inner diameter of the guide through hole provided on the boss at the bottom of the flange; the inner diameter of the lower half of the rotating plug column is larger than the outer diameter of the screw, the screw passes through the inner cavity of the rotating plug and engages with the threaded blind hole at the bottom of the lower hinge; a pair of fifth through holes are provided at the bottom of the rotating plug, and the fifth through holes correspond to the threaded through holes on the turntable, thereby realizing the connection between the rotating plug and the turntable.

[0010] The above-mentioned mechanism for adjusting the center position of rotation of the hinge is characterized in that the top of the turntable is a metal tube, and the bottom of the turntable is a metal ring, which are formed by welding together several round tubes; the inner diameter of the metal ring at the bottom of the turntable is larger than the outer diameter of the lower body of the rotating plug; and a threaded through hole is opened on the metal ring to match the fifth through hole at the bottom of the rotating plug.

[0011] The above-mentioned mechanism for adjusting the center position of hinge rotation, the rubber seat is generally annular, assembled in the inner cavity of the flange, and located between the bottom of the lower hinge and the vehicle body; a square through hole is provided in the middle of the rubber seat, and the middle part of the lower hinge is embedded in the square through hole; a plurality of blind holes are provided around the rubber seat, and a compression spring and a metal pad are embedded in each blind hole.

[0012] The beneficial effects of the present invention are as follows: when the turntable rotates to one side (with the direction of movement of the lower hinge from the inside to the outside of the vehicle body as the upper direction), the rotating plug moves linearly upward with the rotation of the turntable, pushing the lower hinge upward as well. Because the lower hinge is embedded in the square hole of the guide seat, the lower hinge can only move linearly upward, and the position of the hinge's rotation center is adjusted upward. When the turntable rotates to the other side, the rotating plug moves linearly downward with the rotation of the turntable. At this time, the compressed spring between the lower hinge and the vehicle body rebounds and applies pressure to the lower hinge, causing it to move linearly and maintain contact with the rotating plug, and the position of the hinge's rotation center is adjusted downward. When the lower hinge is adjusted to the appropriate position, a screw that passes through the rotating plug and engages with the bottom thread of the lower hinge fixes the lower hinge's height, thereby achieving adjustment of the hinge's rotation center. This solves the problem of hinge adjustment being time-consuming, labor-intensive, and requiring a large amount of repetitive physical effort, thereby improving the practicality and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the assembly structure of the door hinge of a special vehicle.

[0014] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 3 It is a cross-sectional structural diagram of the present invention.

[0016] Figure 4 It is a schematic diagram of the hinge of the present invention.

[0017] Figure 5 It is a schematic diagram of the lower hinge of the present invention.

[0018] Figure 6 It is a sectional view of the lower hinge of the present invention.

[0019] Figure 7 It is a schematic diagram of the guide seat of the present invention.

[0020] Figure 8 It is a schematic diagram of the flange of the present invention.

[0021] Figure 9 It is a schematic diagram of the rotary plug of the present invention.

[0022] Figure 10 It is a schematic diagram of a turntable of the present invention.

[0023] Figure 11 It is a schematic diagram of the rubber seat of the present invention.

[0024] Figure 12 It is a cross-sectional view of the rubber seat of the present invention. Implementation Method

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] like Figure 2 、 Figure 3 As shown, a mechanism for adjusting the hinge rotation center position includes an upper hinge 1, a lower hinge 2, a guide seat 3, a flange 4 and a rotating plug. One end of the upper hinge 1 is provided with an interface for connecting to a door leaf, and the other end of the upper hinge 1 is rotatably connected to the upper end of the lower hinge 2 through a pin shaft to form a rotating pair, and the rotation center of the rotating pair is the rotation center 6 of the hinge; the upper end of the flange 4 is fixed to the vehicle body, and the middle part of the lower hinge 2 is embedded in the square hole 29 in the center of the guide seat 3, the guide seat 3 is fixed to the vehicle body, and the bottom of the lower hinge 2 is located in the inner cavity of the flange 4; a rotating plug 10 is provided below the bottom of the lower hinge 2, the top of the rotating plug 10 presses against the bottom of the lower hinge 2, the outer wall of the rotating plug 10 is threadedly connected to the inner wall of the flange 4, the lower part of the rotating plug 10 extends out of the flange 4 and the protruding end is fixedly connected to a turntable 5, and a rubber seat 8 is assembled between the bottom of the lower hinge 2 and the vehicle body, and a compression spring 27 is embedded in the rubber seat 8, so that the lower hinge 2 and the rotating plug 10 always maintain contact.

[0027] like Figure 4 As shown, one end of the upper hinge 1 is provided with a through-hole interface 13 corresponding to the through-hole of the door leaf, and the connection with the door leaf is achieved through standard parts such as a first bolt; the other end of the upper hinge 1 is provided with a pair of first through-holes 14, which correspond to the second through-holes 15 of the lower hinge 2. Through the cooperation of standard parts such as a pin shaft, the connection between the upper and lower hinges 2 is completed and a rotating pair is formed.

[0028] like Figure 5 、 Figure 6As shown, a second through hole 15 corresponding to the first through hole 14 of the upper hinge 1 is provided at the top of the lower hinge 2, whose function is to realize the connection between the upper and lower hinges 2; the middle part of the lower hinge 2 is a rectangular structure, whose length and width dimensions are slightly smaller than the size of the square hole in the middle of the guide seat 3, so that it can move linearly inside the square hole 29; the bottom end of the lower hinge 2 is a column, the outer diameter of the column is larger than the size of the square hole in the middle of the guide seat 3 and slightly smaller than the inner diameter of the inner cavity of the flange 4, so that the lower hinge 2 can move up and down in the inner cavity of the flange 4; the outer ring of the bottom of the column is provided with a stop step 17, which is embedded in the inner cavity of the rotating plug 10 to prevent the lower hinge 2 from being misaligned and generating a break during assembly and use; a threaded blind hole 16 is provided at the center of the bottom of the column. The threaded blind hole 16 is deep, so that the lower hinge 2 can be connected to the rotating plug 10 by a screw 12 of the same specification at any height position, and fix the height position of the lower hinge 2 at this time.

[0029] like Figure 7 As shown, the guide seat 3 is a rectangular structure, which is directly welded to the vehicle body. A square hole 29 is provided in the middle of the guide seat 3, which is slightly larger than the length and width of the rectangular block in the middle of the lower hinge 2. The square hole 29 has a guiding function, which can ensure that the lower hinge 2 only moves in a straight line in the guide seat 3.

[0030] like Figure 8 As shown, the flange 4 is generally a T-shaped hollow cylindrical structure, with four third through holes opened on the top of the flange 4. The third through holes correspond to the fourth through holes opened on the vehicle body, and are connected to the vehicle body through standard parts such as threaded attachments 9 and second bolts. The inner cavity of the flange 4 is divided into three stages from top to bottom, specifically a smooth surface stage, a trapezoidal thread stage, and a rough surface stage. The smooth surface stage indicates that the assembly part of the rubber seat 8 and the flange 4 is a smooth surface 19, which can prevent the rubber seat 8 from being damaged when sliding therein; the trapezoidal thread stage is the part where the trapezoidal internal thread 20 of the inner cavity wall of the flange 4 engages with the trapezoidal external thread 22 on the outer side of the rotating plug 10. The strength and rigidity of the connection between the inner cavity of the flange 4 and the rotating plug 10 can be increased, and the rotating plug 10 can also be made to move linearly in the inner cavity of the flange 4 by adjusting the degree of engagement of the trapezoidal thread there; the rough surface stage indicates that the area from the trapezoidal external thread 22 on the outside of the rotating plug 10 to the bottom of the inner cavity of the flange 4 is a rough surface 21, which only serves to reduce the weight; there is a boss 18 at the bottom of the inner bottom of the flange 4, and the height of the boss 18 can limit the range of movement of the rotating plug 10. A guide hole is provided in the center of the boss 18 for the lower part of the rotating plug 10 to pass through. The inner diameter of the guide hole is slightly larger than the outer diameter of the lower cylinder of the rotating plug 10, which can ensure that the rotating plug 10 only makes rotational movement in the guide hole.

[0031] like Figure 9As shown, the rotating plug 10 is generally a T-shaped hollow cylindrical structure, and a trapezoidal external thread 22 is provided on the outer side of the upper body of the rotating plug 10, which corresponds to the trapezoidal internal thread 20 provided on the inner wall of the flange 4. By adjusting the degree of thread engagement, the rotating plug 10 can make a linear motion in the inner cavity of the flange 4; the outer diameter of the lower half of the rotating plug 10 is slightly smaller than the inner diameter of the guide hole provided by the boss 18 at the bottom of the flange 4; the inner diameter of the lower half of the cylindrical body of the rotating plug 10 is slightly larger than the outer diameter of the screw 12, which passes through the inner cavity of the rotating plug 10 and engages with the threaded blind hole 16 at the bottom of the lower hinge 2. After engaging to a certain degree, the nut of the screw 12 presses the outer surface of the bottom end of the rotating plug 10, and cooperates with the spring washer to prevent the screw thread from loosening, thereby fixing the position of the lower hinge 2 at this time; a pair of fifth through holes 23 are provided at the bottom of the rotating plug 10, and the fifth through holes 23 correspond to the threaded through holes 24 on the turntable 5, thereby realizing the connection between the rotating plug 10 and the turntable 5.

[0032] like Figure 10 As shown, the top of the turntable 5 is a metal tube 51, and the bottom of the turntable 5 is a metal ring 52, which are welded together by three tubes 53; the inner diameter of the metal ring 52 at the bottom of the turntable 5 is slightly larger than the outer diameter of the lower half of the rotating plug 10, so that it can be put on the outside of the lower half of the rotating plug 10, which is convenient for the assembly of the turntable 5; a threaded through hole 24 is provided on the metal ring 52, which matches the fifth through hole 23 at the bottom of the rotating plug 10. A pair of screws 11 can be passed through the threaded through hole 24 and the fifth through hole 23 to complete the connection between the turntable 5 and the rotating plug 10, so that the movements of the rotating plug 10 and the turntable 5 are bound to each other, so that when the turntable 5 rotates, the rotating plug 10 can rotate with the turntable 5.

[0033] like Figure 11 、 Figure 12 As shown, the rubber seat 8 is generally annular in structure, assembled in the inner cavity of the flange 4, and located between the bottom of the lower hinge 2 and the vehicle body, and its function is to achieve the sealing of the mechanism of the present invention; a square through hole 25 is provided in the middle of the rubber seat 8, and the middle of the lower hinge 2 is embedded in the square through hole 25; four blind holes 26 are provided around the rubber seat 8, and a compression spring 27 and a metal pad 28 are embedded in each blind hole 26. When the lower hinge 2 makes a linear motion downward, the lower hinge 2 can be pressed against the rotating plug 10, thereby ensuring that the adjustment function of the mechanism of the present invention will not fail due to the rotation of the turntable 5.

[0034] The working process of the present invention is as follows: remove the screw 12 and rotate the turntable 5. When the turntable 5 rotates to one side, since the turntable 5 and the rotary plug 10 are bound together, the rotary plug 10 will rotate along with the turntable 5; when the rotary plug 10 rotates, the degree of engagement between the trapezoidal external thread 22 of the rotary plug 10 and the trapezoidal internal thread 20 of the inner cavity of the flange 4 will be increased or decreased, causing the rotary plug 10 to move linearly upward or downward; when the rotary plug 10 moves linearly upward, the rotary plug 10 will press against the column at the bottom of the lower hinge 2, causing the lower hinge to rotate. 2 makes an upward linear motion and compresses the spring 27 embedded in the rubber plate; when the rotating plug 10 makes a downward linear motion, the spring 27 embedded in the rubber seat 8 will rebound and keep the lower hinge 2 always close to the top of the rotating plug 10; the position of the hinge rotation center 6 will be consistent with the change of the assembly position of the lower hinge 2; when it is adjusted to the appropriate position, the height of the lower hinge 2 is fixed by using a screw 12 that passes through the rotating plug 10 and engages with the bottom thread of the lower hinge 2, thereby realizing the adjustment of the position of the hinge rotation center 6.

Claims

1. A mechanism for adjusting the center position of hinge rotation, comprising an upper hinge, a lower hinge, a flange, and a rotating plug, characterized in that: One end of the upper hinge is provided with an interface for connecting to the door leaf, and the other end of the upper hinge is rotatably connected to the upper end of the lower hinge through a pin shaft to form a rotating pair, and the rotation center of the rotating pair is the rotation center of the hinge; the upper end of the flange is fixed to the vehicle body, and the middle part of the lower hinge is embedded in the square hole in the center of the guide seat, the guide seat is fixed to the vehicle body, and the bottom of the lower hinge is located in the inner cavity of the flange; a rotating plug is provided below the bottom of the lower hinge, the top of the rotating plug supports the bottom of the lower hinge, the outer wall of the rotating plug is threadedly connected to the inner wall of the flange, the lower part of the rotating plug extends out of the flange and the protruding end is fixedly connected to a turntable, a rubber seat is assembled between the bottom of the lower hinge and the vehicle body, and a compression spring is embedded in the rubber seat, so that the lower hinge and the rotating plug always maintain contact; The bottom end of the lower hinge is a column, the outer diameter of which is larger than the square hole in the middle of the guide seat and smaller than the inner diameter of the flange cavity; the outer ring of the bottom of the column has a stop step, which is embedded in the inner cavity of the rotating plug; a threaded blind hole is opened in the center of the bottom of the column; The rotating plug is generally a T-shaped hollow cylindrical structure, and a trapezoidal external thread is provided on the outer side of the upper half of the rotating plug, which corresponds to the trapezoidal internal thread provided on the inner wall of the flange; the outer diameter of the lower half of the rotating plug is smaller than the inner diameter of the guide through hole provided on the boss at the bottom of the flange; the inner diameter of the lower half of the rotating plug column is larger than the outer diameter of the screw, which passes through the inner cavity of the rotating plug and engages with the threaded blind hole at the bottom of the lower hinge; a pair of fifth through holes are provided at the bottom of the rotating plug, which correspond to the threaded through holes on the turntable, thereby realizing the connection between the rotating plug and the turntable.

2. The mechanism for adjusting the hinge rotation center position according to claim 1, characterized in that: One end of the upper hinge is provided with a through-hole interface corresponding to the through-hole of the door leaf, and the connection between the upper hinge and the door leaf is achieved through a first bolt; the other end of the upper hinge is provided with a pair of first through-holes, which correspond to the second through-holes of the lower hinge. Through the cooperation of the pin shaft, the connection between the upper and lower hinges is completed and a rotating pair is formed.

3. The mechanism for adjusting the hinge rotation center position according to claim 2, characterized in that: The top of the lower hinge is provided with a second through hole corresponding to the first through hole of the upper hinge. The middle part of the lower hinge is a rectangular parallelepiped structure, and its length and width are smaller than the size of the square hole in the middle part of the guide seat.

4. The mechanism for adjusting the hinge rotation center position according to claim 3, characterized in that: The guide seat is a rectangular parallelepiped structure, which is directly welded to the vehicle body. A square hole is opened in the middle of the guide seat, which is larger than the length and width of the rectangular parallelepiped in the middle of the lower hinge.

5. The mechanism for adjusting the hinge rotation center position according to claim 3, characterized in that: The flange is generally a T-shaped hollow cylindrical structure, with several third through holes opened on the top of the flange, which correspond to the fourth through holes opened on the vehicle body, and are connected to the vehicle body through a threaded seat and a second bolt; the inner cavity of the flange is divided into three stages from top to bottom, specifically a smooth surface stage, a trapezoidal thread stage, and a rough surface stage, wherein the smooth surface stage is the assembly part of the rubber seat and the flange, the trapezoidal thread stage is the part where the trapezoidal internal thread of the flange inner cavity wall engages with the trapezoidal external thread on the outside of the rotating plug, and the rough surface stage is the part where the trapezoidal external thread on the outside of the rotating plug reaches the bottom of the flange inner cavity; there is a boss at the bottom of the flange, the height of the boss limits the range of motion of the rotating plug, and a guide through hole for the lower part of the rotating plug to pass through is provided in the center of the boss.

6. The mechanism for adjusting the hinge rotation center position according to claim 3, characterized in that: The top of the turntable is a metal tube, and the bottom of the turntable is a metal ring, which are welded together by several tubes; the inner diameter of the metal ring at the bottom of the turntable is larger than the outer diameter of the lower half of the rotating plug; a threaded through hole is opened on the metal ring to match the fifth through hole at the bottom of the rotating plug.

7. The mechanism for adjusting the hinge rotation center position according to claim 1, characterized in that: The rubber seat is generally annular in structure, assembled in the inner cavity of the flange, and located between the bottom of the lower hinge and the vehicle body; a square through hole is provided in the middle of the rubber seat, and the middle of the lower hinge is embedded in the square through hole; a number of blind holes are provided around the rubber seat, and a compression spring and a metal pad are embedded in each blind hole.

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