Rear tail door hinge arm fixing support

Abstract

The utility model relates to the technical field of hinge arm fixing, in particular to a rear tail door hinge arm fixing support which comprises a hinge arm, a hinge head fixedly installed at the top end of the hinge arm, a hinge hole preset in the hinge head, a fixing plate installed over the hinge head, and hinge seats fixedly installed at the positions, corresponding to the left end and the right end of the hinge head, of the bottom of the fixing plate. The hinged support and the hinged head are hinged through a hinged shaft, a strip-shaped block is fixedly installed at the bottom of the hinged head, a plurality of flanges are fixedly installed at the positions, corresponding to the strip-shaped block, of the outer side of the hinged support, a plurality of adjusting holes are formed in each flange in advance, limiting rods penetrate through the adjusting holes, holes are formed in the strip-shaped block at the same time, and the limiting rods penetrate through the holes to form limiting installation. The limiting rod is matched with the flange and the strip-shaped block, when the limiting rod is inserted, the hinge arm and the hinge base can be limited and fixed, so that the hinge arm and the hinge base do not rotate any more, and after the limiting rod is installed on a tailstock door, the tailstock door in a normally-open state can be limited and fixed, and the tailstock door is not prone to jolting and swinging.

Description

Technical Field

[0001] This utility model relates to the field of hinge arm fixing technology, specifically to a rear tailgate hinge arm fixing bracket. Background Technology

[0002] The tailgate hinge arm is part of the tailgate hinge and is a key component that allows the tailgate to open and close smoothly and naturally. Its main function is to connect the tailgate to the vehicle body and allow the tailgate to rotate relative to the body, thus enabling the tailgate to open and close. Simultaneously, the tailgate hinge arm also supports and secures the tailgate, ensuring its stability and safety during opening and closing.

[0003] In certain special usage conditions, such as when the trunk contains large or oddly shaped items that extend beyond the trunk or are too tall to close properly, the tailgate may become open and unsecured while the car is in motion. This can cause the tailgate to strike the stored items, potentially damaging them or allowing them to fall out due to the lack of securing them. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] The rear tailgate hinge arm fixing bracket includes a hinge arm, a fixing seat is fixedly installed at the bottom end of the hinge arm, a hinge joint is fixedly installed at the top end of the hinge arm, a hinge hole is pre-set in the hinge joint, a fixing plate is installed directly above the hinge joint, hinge seats are fixedly installed at the bottom of the fixing plate corresponding to the left and right ends of the hinge joint, a strip block is fixedly installed at the bottom of the hinge joint, and multiple flanges are fixedly installed on the outside of the hinge seats corresponding to the position of the strip block. Multiple adjustment holes are pre-set on each flange, and a limit rod passes through the adjustment hole. The strip block also has holes, and the limit rod passes through the holes to form a limit installation.

[0006] Furthermore, the rear tailgate hinge arm fixing bracket includes a hinge arm that is inclined, with the hinge joint and the fixing seat having an angle of 12°. The hinge seat and the hinge joint are hinged together via a hinge shaft. The inclined arrangement is to accommodate the different structures of the rear of the vehicle and the tailgate, facilitating installation.

[0007] Furthermore, the inner wall of the hinge joint at the hinge hole location is evenly provided with multiple ball bearing cavities, each containing a steel ball, with the steel ball protruding into the hinge hole. The steel ball reduces frictional resistance, facilitating the rotation of the hinge arm. Simultaneously, when oil or dust enters, it also reduces frictional noise and suppresses the increase in frictional resistance.

[0008] Furthermore, hinge rods are threaded between both ends of the hinge joint and the corresponding hinge seats. The hinge seats and the hinge joint are hinged together by the hinge rods. A polygonal block is pre-installed on the hinge rod, and a limiting sleeve is fixedly installed on the outer side of the polygonal block. A polygonal limiting cavity is pre-installed on the hinge seat at the corresponding position of the limiting sleeve. The limiting sleeve is fitted onto the outer side of the polygonal block and simultaneously abuts against the polygonal limiting cavity to form a limiting installation. The limiting rod insertion method is used for limiting, making operation simple and convenient.

[0009] Furthermore, a shearing thread area is pre-set on the hinge rod corresponding to the hinge joint position. The shearing thread area extends into the hinge joint and is connected by threads. A rod head is fixedly installed at the outer end of the hinge rod. A polygonal block is located on the hinge rod between the rod head and the shearing thread area. The distance between the polygonal block and the shearing thread area is not less than the thickness of the hinge seat. Since the two hinge seats are fixed to the same fixed plate, the hinge rod needs to be connected in sections from both ends. If the two hinge seats are separate and independent, the hinge rod and the hinge joint can be completely fixed.

[0010] Furthermore, a small-diameter area is pre-set on the hinge rod between the polygonal block and the rod head. A tension thread area is pre-set on the hinge rod near the rod head at the small-diameter area. A threaded sleeve is fitted onto the hinge rod at the tension thread area, and the threaded sleeve is threadedly connected to the hinge rod at the tension thread area. The threaded sleeve and the limiting sleeve are mutually fixed, and the distance between the tension thread area and the polygonal block is not less than the length of the limiting sleeve. The cooperation between the tension thread area and the threaded sleeve provides a fixing method after the limiting sleeve is removed, preventing it from moving arbitrarily and entering the polygonal limiting cavity when unnecessarily.

[0011] Furthermore, fixing holes are pre-set at the four corners of the fixing plate. A pad is placed on the fixing plate at each fixing hole location. The top surface of the pad furthest from the fixing plate is hemispherical, with holes corresponding to the fixing holes on the pad. A fixing rivet passes through each fixing hole, with one end of the rivet abutting against the hemispherical top surface of the pad. The hemispherical surface concentrates the contact force of the fixing rivet and then distributes it to the pad, ensuring stable engagement of the pad with the fixing position on the vehicle and reducing tensile deformation damage to the fixing position during pulling.

[0012] Furthermore, a pin hole is provided at the end of the limiting rod, and an anti-detachment pin passes through the pin hole. To prevent the limiting rod from easily falling out, various types of anti-detachment pins are available; a highly reusable type can be used.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a limiting rod in combination with a flange and a strip block. When the limiting rod is inserted, it can limit and fix the hinge arm and the hinge seat, so that they no longer rotate. When installed behind the tailgate, it can limit and fix the tailgate in the normally open state, so that it is not easy to shake or swing.

[0015] 2. In this utility model, by setting steel balls inside the hinge joint, the hinge shaft and the steel balls come into contact with each other after installation, reducing mutual frictional resistance and making the tailgate rotate more smoothly.

[0016] 3. In this utility model, the combination of a limiting sleeve and a hinged rod provides a limiting and fixing effect. Compared with the insertion and limiting of the limiting rod, each component can constrain and fix each other, forming a connected whole that is not affected by missing parts or placement position, thus facilitating daily use.

[0017] 4. The threaded sleeve on the hinge rod of this utility model is equipped with a tension thread area, which provides a reliable placement area for the limiting sleeve when it is not limited, making it difficult for the limiting sleeve to move at will. Attached Figure Description

[0018] Figure 1 This is a perspective view of Embodiment 1 of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the hinge rod in Embodiment 1 of this utility model;

[0020] Figure 3 This is a perspective view of the hinge rod in Embodiment 1 of this utility model;

[0021] Figure 4 This is an enlarged view of the hinge joint in Embodiment 2 of this utility model;

[0022] Figure 5 This is a schematic diagram of the installation of the steel ball in Embodiment 2 of this utility model;

[0023] Figure 6 This is a perspective view of Embodiment 3 of this utility model;

[0024] Figure 7 This is a perspective view of Embodiment 4 of this utility model;

[0025] Figure 8 This is a utility model Figure 7 Enlarged view of point A in the image.

[0026] Reference numerals: 1. Hinge arm; 2. Fixed seat; 3. Hinge joint; 4. Hinge hole; 5. Steel ball; 6. Ball bearing cavity; 7. Hinge rod; 8. Rod head; 9. Shear thread area; 10. Polygonal block; 11. Small diameter area; 12. Tension thread area; 13. Limiting sleeve; 14. Threaded sleeve; 15. Polygonal limiting cavity; 16. Fixed plate; 17. Hinge seat; 18. Hinge shaft; 19. Fixed hole; 20. Pad; 21. Fixing rivet; 22. Strip block; 23. Flange; 24. Adjustment hole; 25. Limiting rod; 26. Pin hole; 27. Anti-detachment pin. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] This application provides a tailgate hinge arm fixing bracket, mainly to solve the problem of the lack of reliable fixation for the tailgate when it is in a normally open state because the contents of the loaded items are too large to close. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-8 Please provide a detailed explanation:

[0029] Example 1: A rear tailgate hinge arm fixing bracket includes a hinge arm 1, a fixing seat 2 fixedly installed at the bottom end of the hinge arm 1, and a hinge joint 3 fixedly installed at the top end of the hinge arm 1.

[0030] The hinge joint 3 is 29 (+0, -0.1) mm wide, the hinge hole 4 is 6.92 mm - 6.956 mm in diameter, the vertical distance from the center of the hinge hole 4 to the bottom surface of the fixed base 2 is 68.64 mm, the fixed base 2 is 60 ± 0.1 mm long, 28 mm wide, and 5 (+0.6, -0.2) mm high, and the vertical distance from the bottom of the fixed base 2 to the top of the hinge joint 3 is 76.14 mm.

[0031] The product appearance is free from defects such as burrs, missing material, cracks, folds, rust, and oxide scale. Sharp edges in the processing area are blunted and deburred, and there must be no harmful burrs that affect assembly and use. The product surface is passivated with trivalent chromium and then galvanized. The thickness of the galvanized layer is ≥8μm, and the galvanized layer is free from defects such as peeling, particles, bubbles, dents, and water stains.

[0032] Adhesion requirements for galvanized layer: After heating to 220±10℃ for 30 minutes, quickly immerse in room temperature water to cool. The galvanized layer should not exhibit blistering, flaking, or delamination.

[0033] Corrosion resistance requirements for galvanized coating: Neutral salt spray test according to GB / T 10125 2021 "Artificial Atmosphere Corrosion Test", no white rust after 24 hours, no red rust after 144 hours;

[0034] A fixing plate 16 is installed directly above the hinge joint 3. A hinge seat 17 is fixedly installed at the bottom of the fixing plate 16 corresponding to the left and right ends of the hinge joint 3. A hinge rod 7 passes through both ends of the hinge joint 3 and the corresponding hinge seat 17. The hinge seat 17 and the hinge joint 3 are hingedly connected by the hinge rod 7.

[0035] A shearing thread area 9 is pre-set on the hinge rod 7 corresponding to the position of the hinge joint 3. The shearing thread area 9 extends into the hinge joint 3 and is connected by threads. The shearing thread area 9 is a shearing external thread groove. Therefore, the interior of the hinge joint 3 that matches it is a stretched internal thread. A rod head 8 is fixedly installed on the outer end of the hinge rod 7 away from the hinge joint 3. A polygonal block 10 is pre-set on the hinge rod 7 between the rod head 8 and the shearing thread area 9. A small diameter area 11 is pre-set on the hinge rod 7 between the polygonal block 10 and the rod head 8. A stretched thread area 12 is pre-set on the hinge rod 7 near the rod head 8 at the position of the small diameter area 11. A threaded sleeve 14 is fitted on the hinge rod 7 at the position of the stretched thread area 12. The threaded sleeve 14 is threadedly connected to the hinge rod 7 at the position of the stretched thread area 12. The stretched thread area 12 is a stretched external thread. Therefore, the threaded sleeve 14 is a matching shearing internal thread groove.

[0036] A limiting sleeve 13 is fixedly installed on the threaded sleeve 14 facing the inner end of the polygonal block 10. A polygonal limiting cavity 15 is preset on the hinge seat 17 corresponding to the position of the limiting sleeve 13. The limiting sleeve 13, the polygonal limiting cavity 15 and the polygonal block 10 are all equilateral octagonal. They can also be configured as equilateral structures with more sides. The limiting sleeve 13 is fitted onto the outside of the polygonal block 10 and simultaneously abuts against the polygonal limiting cavity 15 to form a limiting installation.

[0037] The distance between the tension threaded area 12 and the polygonal block 10 is not less than the length of the limiting sleeve 13, the distance between the polygonal block 10 and the shear threaded area 9 is not less than the thickness of the hinge seat 17, and the diameter of the hinge rod 7 at the position of the tension threaded area 12 is smaller than the diameter of the hinge rod 7 at the position of the shear threaded area 9.

[0038] After the hinge arm 1 and hinge seat 17 are installed on the tailgate, if it is necessary to maintain the tailgate at a certain opening angle, first manually support the tailgate to the required angle, then rotate the threaded sleeve 14 to unscrew it from the tension thread area 12, so that it is no longer threaded. At this time, the limiting sleeve 13 can be pushed linearly into the polygonal limiting cavity 15 of the hinge seat 17. If the corner of the polygonal limiting cavity 15 aligns with the corner of the polygonal block 10, the limiting sleeve 13 can be pushed in. Since the hinge rod 7 is fixed to the hinge arm 1 by a threaded connection, the insertion of the limiting sleeve 13 can prevent the hinge seat 17 from rotating relative to the hinge arm 1, thus achieving... To achieve a limiting and fixing effect, considering that the tailgate rotates downwards, the thread direction of the shear thread area 9 is opposite to the closing rotation direction of the tailgate, to prevent the hinge rod 7 from loosening when the tailgate is closed. If the corners of the polygonal limiting cavity 15 are not aligned with the corners of the polygonal block 10, the tailgate can be rotated back and forth to adjust them until they are aligned. The surface thread structure of the tension thread area 12 is not compatible with the steel ball 5, so only one of them is selected for use. When releasing the limiting and fixing, first stretch the thread sleeve 14 to bring out the limiting sleeve 13, and then rotate the thread sleeve 14 to connect it to the tension thread area 12 by thread to prevent arbitrary movement.

[0039] In embodiment 2, a hinge hole 4 is pre-set in the hinge joint 3, the hinge arm 1 is inclined, the angle between the hinge joint 3 and the fixed seat 2 is 12°, and multiple ball bearing cavities 6 are evenly opened on the inner wall of the hinge joint 3 at the position of the hinge hole 4. Each ball bearing cavity 6 is equipped with a steel ball 5, and the steel ball 5 protrudes into the hinge hole 4.

[0040] After installation, the steel ball 5 can make rolling contact with the hinge shaft, thereby reducing the frictional resistance between the hinge shaft and the hinge arm 1, making the hinge rotation smoother.

[0041] In embodiment 3, fixing holes 19 are pre-set at the four corners of the fixing plate 16. A pad 20 is placed on the fixing plate 16 at the fixing hole 19. The top surface of the pad 20 away from the fixing plate 16 is hemispherical. The pad 20 has a hole corresponding to the fixing hole 19. A fixing rivet 21 passes through the fixing hole 19. One end of the fixing rivet 21 abuts against the hemispherical top surface of the pad 20. The hinge seat 17 and the hinge joint 3 are hinged together by the hinge shaft 18.

[0042] The pad 20 is used to increase the force-bearing area of ​​the fixing position when the fixing plate 16 is fixed, so as to reduce the tensile deformation or damage to the fixing position when subjected to a large tensile force. At the same time, the hemispherical top surface increases the clamping force between the fixing components such as the fixing rivet 21 and the pad 20, the fixing position and the fixing plate 16, thereby improving the fixing stability. The circumferential surface of the hinge shaft 18 is well compatible with the steel ball 5 and can be used with the steel ball 5.

[0043] In embodiment four, a strip block 22 is fixedly installed at the bottom of the hinge joint 3. Multiple flanges 23 are fixedly installed on the outer side of the hinge seat 17 corresponding to the position of the strip block 22. Multiple adjustment holes 24 are pre-set on each flange 23. A limit rod 25 passes through the adjustment hole 24. A hole is opened on the strip block 22 at the same time, and the limit rod 25 passes through the hole to form a limit installation.

[0044] When it is necessary to fix the opening angle of the tailgate, the limiting rod 25 can be inserted into the flange 23 and the strip block 22 to limit the tailgate and prevent it from swinging. The matching structure of the limiting rod 25 and the flange 23 can be used with the hinge rod 7, or one of them can be selected for use.

[0045] The end of the limiting rod 25 has a pin hole 26, and an anti-detachment pin 27 passes through the pin hole 26. The anti-detachment pin 27 is used to prevent the limiting rod 25 from being dislodged due to vehicle bumps, thus maintaining the installation reliability of the limiting rod 25.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tailgate hinge arm fixing bracket comprising a hinge arm (1), characterised in that, The hinge arm (1) is fixedly mounted with a fixed seat (2) at the bottom end and a hinge joint (3) is fixedly mounted at the top end of the hinge arm (1). A hinge hole (4) is pre-set inside the hinge joint (3). A fixed plate (16) is installed directly above the hinge joint (3). A hinge seat (17) is fixedly mounted at the bottom of the fixed plate (16) corresponding to the left and right ends of the hinge joint (3). A strip block (22) is fixedly mounted at the bottom of the hinge joint (3). Multiple flanges (23) are fixedly mounted on the outside of the hinge seat (17) corresponding to the position of the strip block (22). Multiple adjustment holes (24) are pre-set on each flange (23). A limit rod (25) passes through the adjustment hole (24). A hole is opened on the strip block (22), and the limit rod (25) passes through the hole to form a limit installation.

2. The tailgate hinge arm mounting bracket of claim 1, wherein, The hinge arm (1) is inclined, the angle between the hinge joint (3) and the fixed seat (2) is 12°, and the hinge joint (3) and the hinge seat (17) are hinged together by the hinge shaft (18).

3. The tailgate hinge arm mounting bracket of claim 2, wherein, Multiple ball bearing cavities (6) are evenly provided on the inner wall of the hinge joint (3) at the hinge hole (4). Each ball bearing cavity (6) is equipped with a steel ball (5), and the steel ball (5) protrudes into the hinge hole (4).

4. The tailgate hinge arm bracket of claim 1, wherein, The hinge joint (3) has a hinge rod (7) between each end and the corresponding hinge seat (17). The hinge seat (17) and the hinge joint (3) are hinged together by the hinge rod (7). The hinge rod (7) has a polygonal block (10) pre-set on it. A limit sleeve (13) is installed on the outside of the polygonal block (10). A polygonal limit cavity (15) is pre-set on the hinge seat (17) at the position corresponding to the limit sleeve (13). The limit sleeve (13) is fitted onto the outside of the polygonal block (10) and simultaneously abuts against the polygonal limit cavity (15) to form a limit installation.

5. The tailgate hinge arm mounting bracket of claim 4, wherein, The hinge rod (7) has a pre-set shearing thread area (9) at the position corresponding to the hinge joint (3). The shearing thread area (9) extends into the hinge joint (3) and is connected by threads. The outer end of the hinge rod (7) is fixedly installed with a rod head (8). The polygonal block (10) is located on the hinge rod (7) between the rod head (8) and the shearing thread area (9). The distance between the polygonal block (10) and the shearing thread area (9) is not less than the thickness of the hinge seat (17).

6. The tailgate hinge arm mounting bracket of claim 5, wherein, The hinge rod (7) between the polygonal block (10) and the rod head (8) has a small diameter area (11) pre-set. The hinge rod (7) at the position of the small diameter area (11) has a tension thread area (12) pre-set near the rod head (8). The hinge rod (7) at the position of the tension thread area (12) is fitted with a threaded sleeve (14). The threaded sleeve (14) is threadedly connected to the hinge rod (7) at the position of the tension thread area (12). The threaded sleeve (14) is fixed to the limiting sleeve (13). The distance between the tension thread area (12) and the polygonal block (10) is not less than the length of the limiting sleeve (13).

7. The tailgate hinge arm bracket of claim 1, wherein, Fixing holes (19) are pre-set at the four corners of the fixing plate (16). A pad (20) is placed on the fixing plate (16) at the fixing hole (19). The top surface of the pad (20) away from the fixing plate (16) is hemispherical. The pad (20) has a hole corresponding to the fixing hole (19). A fixing rivet (21) passes through the fixing hole (19). One end of the fixing rivet (21) abuts against the hemispherical top surface of the pad (20).

8. The tailgate hinge arm mounting bracket of claim 3, wherein, The end of the limiting rod (25) is provided with a pin hole (26), and an anti-detachment pin (27) passes through the pin hole (26).

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