Tail door hinge with self-limiting structure

Abstract

The tail door hinge with the self-limiting structure comprises a hinge vehicle body part, a mounting cavity is formed in one side of the hinge vehicle body part and is of an open structure, a limiting rotating shaft is arranged in the mounting cavity, first mounting grooves are formed in the front end and the rear end of the interior of the limiting rotating shaft respectively, and the first mounting grooves are communicated with the mounting cavity. And a roller pin is arranged in the first mounting groove and is in sliding fit with the first mounting groove, and the structure solves the problems that the angle of the vehicle door hinge is difficult to limit, and the rotating shaft in the hinge is difficult to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of tailgate hinges, in particular to a tailgate hinge with a self-limiting structure. Background Art

[0002] The tailgate hinge consists primarily of two parts: the hinge base and the hinge body. One end of the hinge body is connected to the door frame via a core shaft, while the other end is tightly connected to the tailgate leaf. This unique two-stage design allows the hinge body to form a single unit with the help of a connecting plate, ensuring structural stability while facilitating installation, removal, and maintenance of the tailgate. The tailgate hinge's design ensures a smooth opening and closing of the tailgate. Furthermore, the connecting plate typically features adjustment holes for the door gap, including slots for adjusting the upper and lower door gaps and slots for adjusting the left and right door gaps. These adjustment holes allow for easy adjustment of the gap between the tailgate and the door frame. Tailgate hinges are widely used in the automotive industry and are a key component for ensuring smooth opening and closing of the tailgate.

[0003] For example, the Chinese patent "A New Tailgate Hinge Assembly Structure" with announcement number CN212078997U includes a first connecting member and a second connecting member, which are movably connected by a connecting shaft. The first connecting member includes a first connecting plate, and the two side edges of the first connecting plate are respectively provided with a first mounting edge. The first mounting edge is integrally formed with the first connecting plate. A plurality of first mounting holes are opened on the first connecting plate, and connecting holes are respectively opened on the first mounting edge. The second connecting member includes a second connecting plate, and a boss is provided on one side of the second connecting plate. A plurality of second mounting holes are opened on the boss. A second mounting edge is provided on a side of the second connecting plate away from the boss. The second mounting edge and the second connecting plate are arranged perpendicular to each other. A bearing is provided above the second mounting edge. The connecting shaft passes through the bearing, and the two ends of the connecting shaft are respectively connected to the connecting holes. The first mounting edge and the first connecting plate are arranged perpendicular to each other. Bushings are also provided at both ends of the bearing. A concave edge is provided on one side of the bushing. The concave edge is clearance-fitted with the inner hole on the bearing. A through hole matching the connecting shaft is opened on the bushing. The first mounting hole and the second mounting hole are respectively provided.

[0004] Although the above-mentioned existing technology can realize the use of hinges, in actual use, on the one hand, it is difficult to limit the angle of the door hinge. Usually, the tailgate of a car uses a hinge and a limiter to cooperate with each other to limit the opening angle of the tailgate, which requires the installation of an additional limiter structure, thereby increasing the production cost. On the other hand, it is difficult to replace the rotating shaft inside the hinge. Usually, the rotating shaft inside the hinge is fixed with rivets, which requires the removal of the entire structure of the hinge when the rotating shaft is replaced after long-term use, thereby increasing the workload of the operator. Therefore, it does not meet the existing needs. In this regard, we propose a tailgate hinge with a self-limiting structure. Utility Model Content

[0005] The purpose of the present invention is to provide a tailgate hinge with a self-limiting structure to solve the problems in the above background art that the door hinge is difficult to limit the angle and the rotating shaft inside the hinge is difficult to replace.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a tailgate hinge with a self-limiting structure, including a hinge body part, an installation cavity is provided inside one side of the hinge body part, the installation cavity is an open structure, a limiting rotating shaft is provided inside the installation cavity, and a first installation groove is provided at the front and rear ends of the limiting rotating shaft, and a roller is provided inside the first installation groove, and the roller slides in cooperation with the first installation groove.

[0007] Preferably, a hinged door component is sleeved on the outside of the limiting shaft, and a rotating hole is provided inside the hinged door component located outside the limiting shaft, and the needle roller is in rolling engagement with the inner wall of the rotating hole.

[0008] Preferably, a limiting groove is provided inside the lower end of the rotating hole of the hinged door component, the limiting groove is communicated with the rotating hole, and the limiting groove is engaged with the needle roller for limiting position.

[0009] Preferably, three second mounting grooves are provided at the middle position inside the limiting rotating shaft, the second mounting grooves are distributed at equal intervals, and the second mounting grooves are communicated with the first mounting grooves.

[0010] Preferably, a spring is provided inside the second mounting groove, and the front and rear ends of the spring are in contact with the needle roller.

[0011] Preferably, the front and rear ends of the limiting shaft are both provided with first threaded holes, and the front and rear ends of one side of the hinge body are both provided with second threaded holes. The second threaded holes are through-type structures, and the positions of the second threaded holes correspond to those of the first threaded holes.

[0012] Preferably, a clamping bolt is provided inside the second threaded hole, one end of the clamping bolt extends into the first threaded hole, the clamping bolt extends to the outside of the hinged body part, and the clamping bolt is respectively connected to the second threaded hole and the first threaded hole through threads.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model can limit the rotation of the hinge through the needle roller and the limit groove. When the hinge needs to be limited, the tailgate is rotated, and the tailgate drives the hinge door component to rotate. At this time, the hinge door component rotates outside the limit shaft, and at the same time, the needle roller located inside the first installation groove rolls in the rotation hole until a part of the needle roller enters the limit groove. At this time, the spring squeezes the needle roller to complete the hinge limitation, avoiding the installation of an additional limit mechanism, thereby reducing production costs.

[0015] 2. The utility model can quickly disassemble and assemble the limit shaft through the clamping bolt and the first threaded hole. After the hinge has been used for a long time, the constant friction between the hinge door component and the limit shaft causes the limit shaft to wear. When replacing the limit shaft, the clamping bolt is rotated at this time, and the thread on the outside of the clamping bolt is used to move it outward in the first threaded hole until the clamping bolt is disengaged from the first threaded hole. The clamping bolt is continued to be rotated, and the thread on the outside of the clamping bolt is used to move it outward in the second threaded hole until the clamping bolt is disengaged from the hinge body component. At this time, the hinge door component is sleeved on the outside of the new limit shaft and the hinge door component and the limit shaft are moved to the installation cavity. At this time, the clamping bolt is rotated to fix the limit shaft again through the clamping bolt, thereby simplifying the steps of replacing the limit shaft.

[0016] 3. The utility model uses a spring to reset the needle roller under the action of an external force. When the tailgate needs to be closed, the person presses the lower end of the tailgate to rotate the tailgate toward the vehicle body. At the same time, the tailgate drives the hinge door component to rotate. When the hinge door component rotates, the inner wall of the limit groove squeezes the needle roller. The squeezed needle roller moves toward the first mounting groove. At the same time, the spring is in a compressed state until the needle roller disengages from the limit groove. At this time, the hinge is released from the limit state and the person can close the tailgate, thereby improving the flexibility of the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the hinge structure assembly of the present invention;

[0018] Figure 2 This is an exploded view of the hinge structure assembly of the present invention;

[0019] Figure 3 This is a three-dimensional diagram of the position-limiting rotating shaft structure of the utility model;

[0020] Figure 4 This is a three-dimensional diagram of the internal structure of the limiting rotating shaft of the present utility model.

[0021] In the figure: 1. Hinge body part; 2. Hinge door part; 3. Limiting shaft; 4. Needle roller; 5. Spring; 6. Tightening bolt; 7. Limiting groove; 8. Mounting cavity; 9. First threaded hole; 10. First mounting groove; 11. Second mounting groove; 12. Rotating hole; 13. Second threaded hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: a tailgate hinge with a self-limiting structure, including a hinge body part 1, an installation cavity 8 is provided inside one side of the hinge body part 1, the installation cavity 8 is an open structure, a limiting rotating shaft 3 is provided inside the installation cavity 8, and the front and rear ends of the limiting rotating shaft 3 are both provided with a first installation groove 10, and a needle roller 4 is provided inside the first installation groove 10, and the needle roller 4 slides in cooperation with the first installation groove 10.

[0024] During use, when the hinge needs to be limited, the tailgate is rotated, and the tailgate drives the hinge door component 2 to rotate. At this time, the hinge door component 2 rotates outside the limiting shaft 3, and at the same time, the needle roller 4 located inside the first mounting groove 10 rolls in the rotating hole 12 until a part of the needle roller 4 enters the limiting groove 7. At this time, the spring 5 squeezes the needle roller 4 to complete the limitation of the hinge.

[0025] See also Figure 2 and Figure 4 The outer sleeve of the limiting shaft 3 is provided with a hinge door component 2, and the inner part of the hinge door component 2 located on the outer side of the limiting shaft 3 is provided with a rotating hole 12. The needle roller 4 rolls with the inner wall of the rotating hole 12 to facilitate limiting the hinge through the needle roller 4.

[0026] See also Figure 2 A limiting groove 7 is provided inside the hinge door component 2 at the lower end of the rotating hole 12. The limiting groove 7 is communicated with the rotating hole 12, and the limiting groove 7 is engaged with the needle roller 4 for limiting the position, so that the hinge can be limited by engaging and fixing the limiting groove 7 with the needle roller 4.

[0027] See also Figure 2 and Figure 3Three second mounting grooves 11 are provided at the middle position inside the limiting shaft 3. The second mounting grooves 11 are equidistantly distributed, and the second mounting grooves 11 are connected to the first mounting grooves 10, so as to facilitate the installation of the spring 5 through the second mounting grooves 11.

[0028] See also Figure 2 and Figure 4 A spring 5 is provided inside the second mounting groove 11 , and the front and rear ends of the spring 5 are in contact with the needle roller 4 , so that the needle roller 4 can be squeezed by the spring 5 .

[0029] See also Figure 1 and Figure 2 A first threaded hole 9 is provided at the front and rear ends of the limiting shaft 3, and a second threaded hole 13 is provided at the front and rear ends of one side of the hinge body part 1. The second threaded hole 13 is a through-type structure, and the second threaded hole 13 corresponds to the position of the first threaded hole 9, so that the second threaded hole 13 and the first threaded hole 9 can be connected conveniently by tightening the bolt 6.

[0030] See also Figure 1 and Figure 2 A clamping bolt 6 is provided inside the second threaded hole 13, one end of the clamping bolt 6 extends into the first threaded hole 9, the clamping bolt 6 extends to the outside of the hinge body part 1, and the clamping bolt 6 is respectively connected to the second threaded hole 13 and the first threaded hole 9 through threads, so that the limiting shaft 3 can be fixed by the clamping bolt 6.

[0031] Working principle: After the hinge has been used for a long time, the constant friction between the hinge door component 2 and the limit shaft 3 causes the limit shaft 3 to wear. When the limit shaft 3 is replaced, the clamping bolt 6 is rotated at this time, and the thread on the outside of the clamping bolt 6 is used to move it outward in the first threaded hole 9 until the clamping bolt 6 is disengaged from the first threaded hole 9. The clamping bolt 6 is continued to be rotated, and the thread on the outside of the clamping bolt 6 is used to move it outward in the second threaded hole 13 until the clamping bolt 6 is disengaged from the hinge body component 1. At this time, the hinge door component 2 is sleeved on the outside of the new limit shaft 3 and the hinge is tightened. The door component 2 and the limiting shaft 3 move into the installation cavity 8. At this time, the tightening bolt 6 is rotated to re-fix the limiting shaft 3 through the tightening bolt 6. When the tailgate needs to be closed, the person presses the lower end of the tailgate to rotate the tailgate toward the vehicle body. At the same time, the tailgate drives the hinge door component 2 to rotate. When the hinge door component 2 rotates, the needle roller 4 is squeezed by the inner wall of the limiting groove 7. The squeezed needle roller 4 moves to the first installation groove 10. At the same time, the spring 5 is in a compressed state until the needle roller 4 disengages from the limiting groove 7. At this time, the hinge is released from the limiting state and the person closes the tailgate.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A tailgate hinge with a self-limiting structure, comprising a hinge body member (1), characterized in that: A mounting cavity (8) is provided inside one side of the hinged body part (1), and the mounting cavity (8) is an open structure. A limit rotation shaft (3) is provided inside the mounting cavity (8), and first mounting grooves (10) are provided at the front and rear ends of the limit rotation shaft (3). A roller needle (4) is provided inside the first mounting groove (10), and the roller needle (4) is slidably matched with the first mounting groove (10).

2. The tailgate hinge with a self-limiting structure according to claim 1, characterized in that: The hinged door component (2) is sleeved on the outside of the limiting rotating shaft (3); a rotating hole (12) is provided inside the hinged door component (2) located outside the limiting rotating shaft (3); and the needle roller (4) is in rolling engagement with the inner wall of the rotating hole (12).

3. The tailgate hinge with a self-limiting structure according to claim 2, characterized in that: The hinged door component (2) is provided with a limiting groove (7) located inside the lower end of the rotating hole (12); the limiting groove (7) is communicated with the rotating hole (12), and the limiting groove (7) is engaged with the roller needle (4) for limiting.

4. The tailgate hinge with a self-limiting structure according to claim 3, characterized in that: Three second installation slots (11) are provided at the middle position inside the limiting rotating shaft (3), the second installation slots (11) are distributed at equal intervals, and the second installation slots (11) are communicated with the first installation slots (10).

5. The tailgate hinge with a self-limiting structure according to claim 4, characterized in that: A spring (5) is provided inside the second mounting groove (11), and the front and rear ends of the spring (5) are in contact with the needle roller (4).

6. The tailgate hinge with a self-limiting structure according to claim 5, characterized in that: The front and rear ends of the limiting rotating shaft (3) are both provided with first threaded holes (9), and the front and rear ends of one side of the hinged body part (1) are both provided with second threaded holes (13). The second threaded holes (13) are of a through-type structure, and the positions of the second threaded holes (13) and the first threaded holes (9) correspond.

7. The tailgate hinge with a self-limiting structure according to claim 6, characterized in that: A clamping bolt (6) is provided inside the second threaded hole (13), one end of the clamping bolt (6) extends into the first threaded hole (9), the clamping bolt (6) extends to the outside of the hinged body part (1), and the clamping bolt (6) is respectively connected to the second threaded hole (13) and the first threaded hole (9) through threads.

Images