A four-bar hinge structure for a double-opening tailgate

Abstract

This utility model relates to the field of vehicle tailgate hinge technology, and discloses a four-bar hinge structure for a tailgate, including a four-bar hinge, a side panel, and a tailgate. The four-bar hinge includes a first hinge seat, a second hinge seat, an outer connecting rod, an inner connecting rod, a limiting block, and a first bolt. The first hinge seat is connected to the side panel, and the second hinge seat is connected to the tailgate by the first bolt. One end of the inner connecting rod is hinged to the first hinge seat, and the other end is hinged to the second hinge seat. One end of the outer connecting rod is hinged to the first hinge seat, and the other end is hinged to the second hinge seat. The limiting block is connected to the first hinge seat. The second hinge seat has a first position and a second position. When the second hinge seat is in the first position, the tailgate is closed on the vehicle. When the second hinge seat moves from the first position to the second position, the inner connecting rod abuts against the limiting block. The outer connecting rod is provided with a clearance hole. When the second hinge seat is in the first position, the clearance hole is coaxial with the first bolt.

Description

Technical Field

[0001] This utility model relates to the field of vehicle tailgate hinge technology, and in particular to a four-bar hinge structure for a tailgate. Background Technology

[0002] Currently, more and more car tailgates are adopting the split-opening design to meet the requirements for a large opening angle. Split-opening tailgates typically use a four-bar hinge to connect to the vehicle's side panel. However, existing four-bar hinges cannot inherently limit the tailgate from over-opening; external fixing components, such as wind-locking or magnetic structures, are required to limit the tailgate's movement, which is costly. Furthermore, with existing split-opening tailgates, adjusting the gap between the tailgate and the vehicle body requires the tailgate to be open to tighten or loosen the bolts connecting the hinges to the side panel, resulting in long adjustment times. Also, because the tailgate is open, it is difficult to control the dimensional accuracy of the gap between the tailgate and the vehicle body.

[0003] Therefore, there is an urgent need for a four-bar hinge structure for a split tailgate to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a four-bar hinge structure for a split tailgate, which enables the four-bar hinge itself to prevent the tailgate from opening too much, and is beneficial to improving the efficiency of tailgate position adjustment and the control of the dimensional accuracy of body clearance surface difference.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A four-bar hinge structure for a split tailgate includes a four-bar hinge, a side panel, and a tailgate. The four-bar hinge includes a first hinge seat, a second hinge seat, an outer connecting rod, an inner connecting rod, a limiting block, and a first bolt.

[0007] The first hinge seat is connected to the outer side panel, and the second hinge seat is connected to the tailgate by the first bolt. One end of the inner connecting rod is hinged to the first hinge seat and the other end is hinged to the second hinge seat. One end of the outer connecting rod is hinged to the first hinge seat and the other end is hinged to the second hinge seat.

[0008] The limiting block is connected to the first hinge seat. The second hinge seat has a first position and a second position. When the second hinge seat is in the first position, the tailgate is closed to the vehicle body. When the second hinge seat moves from the first position to the second position, the inner connecting rod abuts against the limiting block.

[0009] The outer connecting rod is provided with a clearance hole. When the second hinge seat is in the first position, the clearance hole is coaxial with the first bolt.

[0010] As an improvement to the above technical solution, a first threaded hole is provided on the outer side panel, and a first connecting hole is provided on the second hinge seat. The first bolt passes through the first connecting hole and is inserted into the first threaded hole to be threadedly connected to the outer side panel.

[0011] As an improvement to the above technical solution, two first bolts are provided, and the two first bolts are spaced apart along the height direction of the vehicle, and the clearance holes are provided one-to-one with the first bolts.

[0012] As an improvement to the above technical solution, the four-bar linkage further includes a second bolt, a second connecting hole is provided on the limiting block, a second threaded hole is provided on the first hinge seat, and the second bolt passes through the second connecting hole and is inserted into the second threaded hole to be threadedly connected to the first hinge seat.

[0013] As an improvement to the above technical solution, the external connecting rod includes a first hinged arm, a second hinged arm, and a connecting arm;

[0014] The first end of the first hinge arm and the first end of the second hinge arm are respectively connected to both sides of the first hinge seat, and the second end of the second hinge arm and the second end of the second hinge arm are respectively connected to both sides of the second hinge seat;

[0015] One end of the connecting arm is connected to the middle of the first hinge arm along its length, and the other end is connected to the middle of the second hinge arm along its length.

[0016] As an improvement to the above technical solution, a mounting groove is provided on the outer side panel, and the first hinge seat is connected to the mounting groove.

[0017] As an improvement to the above technical solution, a first connecting groove is provided at one end of the first hinge seat that is connected to the inner connecting rod, and the inner connecting rod is inserted into the first connecting groove;

[0018] The four-bar hinge structure of the double-opening tailgate also includes a first pin. The first hinge seat is provided with a first pin hole on both sides of the first connecting groove. The inner connecting rod is provided with a second pin hole on the part that inserts into the first connecting groove. The first pin hole and the second pin hole are coaxially arranged. The first pin passes through the first pin hole and the second pin hole to connect the inner connecting rod and the first hinge seat.

[0019] As an improvement to the above technical solution, a second connecting groove is provided at one end of the second hinge seat that is connected to the inner connecting rod, and the inner connecting rod is inserted into the second connecting groove;

[0020] The four-bar hinge structure of the double-opening tailgate also includes a second pin. The second hinge seat is provided with a third pin hole on both sides of the second connecting groove. The inner connecting rod is provided with a fourth pin hole on the part inserted into the second connecting groove. The third pin hole and the fourth pin hole are coaxially arranged. The second pin passes through the third pin hole and the fourth pin hole to connect the inner connecting rod and the second hinge seat.

[0021] As an improvement to the above technical solution, a third threaded hole is provided on the tailgate, and a third connecting hole is provided on the second hinge seat. The third bolt passes through the third connecting hole and is inserted into the third threaded hole to be threadedly connected to the tailgate.

[0022] As an improvement to the above technical solution, a limiting rod is also included. The first hinge seat is provided with a first through hole, and the second hinge seat is provided with a second through hole. The limiting rod is used to insert into the first through hole and the second through hole when the second hinge seat is in the second position to position the relative position between the first hinge seat and the second hinge seat.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This utility model discloses a four-bar hinge structure for a split tailgate. When the second hinge seat is in the first position, the tailgate is closed to the vehicle body. A limiting block is provided on the first hinge seat. When the second hinge seat moves from the first position to the second position, the inner connecting rod abuts against the limiting block, meaning the second position is the maximum opening position of the tailgate. In this four-bar hinge structure, the limiting block for limiting the maximum opening of the tailgate is connected to the first hinge seat, integrating the limiting block into the four-bar hinge. This eliminates the need for an external limiting structure to restrict the maximum opening of the tailgate, achieving the tailgate limiting effect while reducing overall vehicle cost to some extent. Furthermore, an clearance hole is provided on the outer connecting rod. When the second hinge seat is in the first position, the clearance hole is coaxial with the first bolt, allowing tools to be used to tighten or loosen the first bolt even when the tailgate is closed. This improves the efficiency of tailgate position adjustment, shortens the time required to adjust the gap between the tailgate and the vehicle body, and facilitates the control of the dimensional accuracy of the gap between the vehicle body and the tailgate. Attached Figure Description

[0025] Figure 1 This is a partial structural diagram of the four-bar hinge structure for the double-opening tailgate provided in this embodiment of the utility model. Figure 1 ;

[0026] Figure 2 This is a partial structural diagram of the four-bar hinge structure for the double-opening tailgate provided in this embodiment of the utility model. Figure 2 ;

[0027] Figure 3 This is a partial structural diagram of the four-bar hinge structure for the double-opening tailgate provided in this embodiment of the utility model. Figure 3 ;

[0028] Figure 4 This is a cross-sectional view of a portion of the four-bar hinge structure for the split tailgate provided in this embodiment of the utility model.

[0029] Figure 5 This is a schematic diagram of the limiting rod of the four-bar linkage structure of the double-opening tailgate provided in this embodiment of the utility model.

[0030] In the picture:

[0031] 1. First hinge seat; 11. Second threaded hole; 12. First connecting groove; 13. First through hole;

[0032] 2. Second hinge seat; 21. Second connecting groove; 22. Third connecting hole; 23. Second through hole;

[0033] 3. External connecting rod; 31. Clearance hole; 32. First hinge arm; 33. Second hinge arm; 34. Connecting arm;

[0034] 4. Inner connecting rod;

[0035] 5. Limit block;

[0036] 6. First bolt;

[0037] 7. Second bolt;

[0038] 8. Limiting rod; 81. First insertion section; 82. Second insertion section; 83. Connecting section;

[0039] 100. Side panel; 1001. Mounting groove; 200. Tailgate. Detailed Implementation

[0040] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] like Figures 1-4 As shown, this embodiment provides a four-bar hinge structure for a split tailgate, including a four-bar hinge, a side panel 100, and a tailgate 200. The four-bar hinge includes a first hinge seat 1, a second hinge seat 2, an outer connecting rod 3, an inner connecting rod 4, a limiting block 5, and a first bolt 6. The first hinge seat 1 is connected to the side panel 100 of the vehicle body. The second hinge seat 2 is connected to the tailgate 200 of the vehicle via the first bolt 6. One end of the inner connecting rod 4 is hinged to the first hinge seat 1, and the other end is hinged to the second hinge seat 2. One end of the outer connecting rod 3 is hinged to the first hinge seat 1, and the other end is hinged to the second hinge seat 2. The limiting block 5 is connected to the first hinge seat 1. The second hinge seat 2 has a first position and a second position. When the second hinge seat 2 is in the first position, the tailgate 200 is closed to the vehicle body. When the second hinge seat 2 moves from the first position to the second position, the inner connecting rod 4 abuts against the limiting block 5. The outer connecting rod 3 is provided with a clearance hole 31. When the second hinge seat 2 is in the first position, the clearance hole 31 is coaxial with the first bolt 6.

[0045] In this embodiment, the four-bar hinge structure for the split tailgate allows the tailgate 200 to be closed to the vehicle body when the second hinge seat 2 is in the first position. A limiting block 5 is provided on the first hinge seat 1. When the second hinge seat 2 moves from the first position to the second position, the inner connecting rod 4 abuts against the limiting block 5. That is, the second position is the maximum opening position of the tailgate 200, and the limiting block 5 prevents the tailgate 200 from opening too wide. In this embodiment, the limiting block 5, which limits the maximum opening of the tailgate 200, is connected to the first hinge seat 1, so that the limiting block 5 is integrated into the four-bar hinge. This eliminates the need for an additional limiting structure outside the four-bar hinge to limit the maximum opening of the tailgate 200, achieving the effect of limiting the tailgate 200 while reducing the overall vehicle cost to a certain extent. In addition, the outer connecting rod 3 is provided with a clearance hole 31. When the second hinge seat 2 is in the first position, the clearance hole 31 is coaxial with the first bolt 6, so that the tailgate 200 is in the closed state. Tools can be used to tighten or loosen the first bolt 6 through the clearance hole 31, thereby adjusting the position of the tailgate 200. This facilitates the adjustment of the tailgate 200 position during the installation process, which helps to improve the efficiency of tailgate 200 position adjustment, shortens the time required to adjust the surface difference between the tailgate 200 and the vehicle body, and facilitates the control of the dimensional accuracy of the surface difference between the tailgate 200 and the vehicle body.

[0046] Specifically, in this embodiment, such as Figure 1 and Figure 3 As shown, the outer side panel 100 is provided with a first threaded hole, the second hinge seat 2 is provided with a first connecting hole, and the first bolt 6 passes through the first connecting hole and is inserted into the first threaded hole to be threadedly connected to the outer side panel 100.

[0047] Furthermore, such as Figure 1 and Figure 3 As shown, the diameter of the clearance hole 31 is larger than the maximum outer diameter of the first bolt 6. That is to say, when the second hinge seat 2 is in the first position, the projection of the first bolt 6 along its own axial direction is located in the clearance hole 31, and the first bolt 6 can enter and exit through the clearance hole 31, which further facilitates the installation and position adjustment of the tailgate 200.

[0048] Furthermore, such as Figure 1 and Figure 3 As shown, there are two first bolts 6, spaced apart along the height of the vehicle, with corresponding clearance holes 31. That is, the first hinge seat 1 is connected to the side panel 100 via the two first bolts 6, ensuring a secure connection between the first hinge seat 1 and the side panel 100. The clearance holes 31, corresponding to the first bolts 6, facilitate the removal of the two first bolts 6.

[0049] Optionally, such as Figure 4As shown, the four-bar linkage also includes a second bolt 7. A second connecting hole is provided on the limiting block 5, and a second threaded hole 11 is provided on the first hinge seat 1. The second bolt 7 passes through the second connecting hole and is inserted into the second threaded hole 11 to threadly connect with the first hinge seat 1. The connection between the limiting block 5 and the first hinge seat 1 is achieved through the second bolt 7.

[0050] Optionally, such as Figure 1 and Figure 3 As shown, the outer connecting rod 3 includes a first hinge arm 32, a second hinge arm 33, and a connecting arm 34. The first end of the first hinge arm 32 and the first end of the second hinge arm 33 are respectively connected to both sides of the first hinge seat 1. The second end of the second hinge arm 33 and the second end of the second hinge arm 33 are respectively connected to both sides of the second hinge seat 2. One end of the connecting arm 34 is connected to the middle of the first hinge arm 32 along its length, and the other end is connected to the middle of the second hinge arm 33 along its length. The first hinge arm 32, the second hinge arm 33, and the connecting arm 34 form a "butterfly" shaped outer connecting rod 3. The first clearance hole 31 and the second clearance hole 31 are located at the middle of the outer connecting rod 3 along its length and are spaced apart along the height direction of the vehicle. The first hinge arm 32 and the second hinge arm 33 are respectively located on both sides of the first hinge seat 1, which helps to reduce the size of the four-link hinge protruding outside the vehicle body when the tailgate 200 is closed.

[0051] Furthermore, such as Figure 1 and Figure 3 As shown, a mounting groove 1001 is provided on the outer side panel 100, and the first hinge seat 1 is connected to the mounting groove 1001. The mounting groove 1001 can further reduce the size of the four-link hinge protruding from the vehicle body when the tailgate 200 is closed. This ensures that the four-link hinge structure of the split tailgate in this embodiment can meet the relevant regulatory requirements for external protrusions of passenger vehicles.

[0052] Optionally, such as Figures 1-4As shown, the first hinge seat 1 has a first connecting groove 12 at one end connected to the inner connecting rod 4, and the inner connecting rod 4 is inserted into the first connecting groove 12. The four-bar hinge structure of the double-opening tailgate also includes a first pin. The portion of the first hinge seat 1 located on both sides of the first connecting groove 12 has a first pin hole, and the portion of the inner connecting rod 4 inserted into the first connecting groove 12 has a second pin hole. The first pin hole and the second pin hole are coaxially arranged, and the first pin passes through the first pin hole and the second pin hole to connect the inner connecting rod 4 and the first hinge seat 1. The second hinge seat 2 has a second connecting groove 21 at one end connected to the inner connecting rod 4, and the inner connecting rod 4 is inserted into the second connecting groove 21. The four-bar hinge structure of the double-opening tailgate also includes a second pin. The portion of the second hinge seat 2 located on both sides of the second connecting groove 21 has a third pin hole, and the portion of the inner connecting rod 4 inserted into the second connecting groove 21 has a fourth pin hole. The third pin hole and the fourth pin hole are coaxially arranged, and the second pin passes through the third pin hole and the fourth pin hole to connect the inner connecting rod 4 and the second hinge seat 2. Similarly, the four-bar hinge structure of the split tailgate also includes a third pin and a fourth pin. The third pin connects the outer connecting rod 3 to the first hinge seat 1, and the fourth pin connects the outer connecting rod 3 to the second hinge seat 2. In this embodiment, the first pin connecting the inner connecting rod 4 to the first hinge seat 1 and the third pin connecting the outer connecting rod 3 to the first hinge seat 1 are both located close to the outer side panel 100, and the outer connecting rod 3 is arc-shaped to reduce the size of the four-bar hinge protruding from the vehicle body when the tailgate 200 is closed.

[0053] Optionally, such as Figures 1-4 As shown, the tailgate 200 is provided with a third threaded hole, and the second hinge seat 2 is provided with a third connecting hole 22. The third bolt passes through the third connecting hole 22 and is inserted into the third threaded hole to be threadedly connected to the tailgate 200. The connection between the second hinge seat 2 and the tailgate 200 is achieved by the third bolt.

[0054] Optionally, such as Figure 4 and Figure 5As shown, the four-bar hinge structure of the tailgate in this embodiment also includes a limiting rod 8. A first through hole 13 is provided on the first hinge seat 1, and a second through hole 23 is provided on the second hinge seat 2. The limiting rod 8 is used to insert into the first through hole 13 and the second through hole 23 when the second hinge seat 2 is in the second position to position the relative position between the first hinge seat 1 and the second hinge seat 2, that is, to fix the second hinge seat 2 in the second position, keeping the tailgate 200 at its maximum opening angle, thus preventing the tailgate 200 from closing. Specifically, the limiting rod 8 is Z-shaped and includes a first insertion section 81, a second insertion section 82, and a connecting section 83. The first end of the connecting section 83 is fixedly connected to the first insertion section 81, and the second end of the connecting section 83 is fixedly connected to the second insertion section 82. When the second hinge seat 2 is in the second position, the first insertion section 81 is inserted into the first through hole 13, and the second insertion section 82 is inserted into the second through hole 23. When the tailgate 200 needs to be closed, pull the limit rod 8 out of the first through hole 13 and the second through hole 23, and the tailgate 200 can be closed normally.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A four-bar hinge structure for a double-opening tailgate, characterized in that, It includes a four-bar linkage, a side panel (100) and a tailgate (200). The four-bar linkage includes a first hinge seat (1), a second hinge seat (2), an outer connecting rod (3), an inner connecting rod (4), a limiting block (5) and a first bolt (6). The first hinge seat (1) is connected to the side panel (100), the second hinge seat (2) is connected to the tailgate (200) by the first bolt (6), one end of the inner connecting rod (4) is hinged to the first hinge seat (1), and the other end is hinged to the second hinge seat (2), one end of the outer connecting rod (3) is hinged to the first hinge seat (1), and the other end is hinged to the second hinge seat (2); The limiting block (5) is connected to the first hinge seat (1). The second hinge seat (2) has a first position and a second position. When the second hinge seat (2) is in the first position, the tailgate (200) is closed on the vehicle body. When the second hinge seat (2) moves from the first position to the second position, the inner connecting rod (4) abuts against the limiting block (5). The outer connecting rod (3) is provided with a clearance hole (31). When the second hinge seat (2) is in the first position, the clearance hole (31) is coaxial with the first bolt (6).

2. The four-bar hinge structure for the double-opening tailgate according to claim 1, characterized in that, The side panel (100) is provided with a first threaded hole, and the second hinge seat (2) is provided with a first connecting hole. The first bolt (6) passes through the first connecting hole and is inserted into the first threaded hole to be threadedly connected to the side panel (100).

3. The four-bar hinge structure for the double-opening tailgate according to claim 2, characterized in that, There are two first bolts (6), which are spaced apart along the height direction of the vehicle. The clearance holes (31) are provided one-to-one with the first bolts (6).

4. The four-bar hinge structure for the double-opening tailgate according to claim 1, characterized in that, The four-bar linkage also includes a second bolt (7), the limiting block (5) is provided with a second connecting hole, the first hinge seat (1) is provided with a second threaded hole, and the second bolt (7) passes through the second connecting hole and is inserted into the second threaded hole to be threadedly connected to the first hinge seat (1).

5. The four-bar hinge structure for the double-opening tailgate according to claim 1, characterized in that, The outer link (3) includes a first hinge arm (32), a second hinge arm (33), and a connecting arm (34); The first end of the first hinge arm (32) and the first end of the second hinge arm (33) are respectively connected to the two sides of the first hinge seat (1), and the second end of the second hinge arm (33) and the second end of the second hinge arm (33) are respectively connected to the two sides of the second hinge seat (2). One end of the connecting arm (34) is connected to the middle part of the first hinge arm (32) in the length direction, and the other end is connected to the middle part of the second hinge arm (33) in the length direction.

6. The four-bar hinge structure for a double-opening tailgate according to claim 1, characterized in that, The side panel (100) is provided with a mounting groove (1001), and the first hinge seat (1) is connected to the mounting groove (1001).

7. The four-bar hinge structure for a double-opening tailgate according to claim 1, characterized in that, The first hinge seat (1) is provided with a first connecting groove (11) at one end connected to the inner connecting rod (4), and the inner connecting rod (4) is inserted into the first connecting groove (11); The four-bar hinge structure of the double-opening tailgate also includes a first pin. The first hinge seat (1) is provided with a first pin hole on both sides of the first connecting groove (11). The inner connecting rod (4) is provided with a second pin hole on the part inserted into the first connecting groove (11). The first pin hole and the second pin hole are coaxially arranged. The first pin passes through the first pin hole and the second pin hole to connect the inner connecting rod (4) and the first hinge seat (1).

8. The four-bar hinge structure for the double-opening tailgate according to claim 1, characterized in that, The second hinge seat (2) is provided with a second connecting groove (21) at one end connected to the inner connecting rod (4), and the inner connecting rod (4) is inserted into the second connecting groove (21); The four-bar hinge structure of the double-opening tailgate also includes a second pin. The second hinge seat (2) is provided with a third pin hole on both sides of the second connecting groove (21). The inner connecting rod (4) is provided with a fourth pin hole on the part inserted into the second connecting groove (21). The third pin hole and the fourth pin hole are coaxially arranged. The second pin passes through the third pin hole and the fourth pin hole to connect the inner connecting rod (4) and the second hinge seat (2).

9. The four-bar hinge structure for a double-opening tailgate according to claim 1, characterized in that, The tailgate (200) is provided with a third threaded hole, and the second hinge seat (2) is provided with a third connecting hole (22). The third bolt passes through the third connecting hole (22) and is inserted into the third threaded hole to be threadedly connected to the tailgate (200).

10. The four-bar hinge structure for a double-opening tailgate according to claim 1, characterized in that, It also includes a limiting rod (8), the first hinge seat (1) is provided with a first through hole (13), and the second hinge seat (2) is provided with a second through hole (23). The limiting rod (8) is used to insert the first through hole (13) and the second through hole (23) when the second hinge seat (2) is in the second position to position the relative position between the first hinge seat (1) and the second hinge seat (2).

Images