Large-opening-angle self-limiting back door hinge

Abstract

The invention discloses a large-opening-angle self-limiting back door hinge, and belongs to the field of automobile manufacturing. Comprising a base installed on an automobile body, a main rotating arm is hinged to the base, and an auxiliary rotating arm is hinged to the other end of the main rotating arm and fixed to an automobile back door. A cavity is formed in the middle of the main rotating arm, a connecting rod is arranged in the cavity, the two ends of the connecting rod are hinged to the base and the auxiliary rotating arm respectively, a limiting roller assembly is arranged at the end, away from the auxiliary rotating arm, of the main rotating arm, a C-shaped torsion rod spring is arranged on the base, and the tail end of the C-shaped torsion rod spring movably abuts against the top of the limiting roller assembly. The limiting roller assembly and the C-shaped torsion rod spring enable the automobile back door to be limited at one gear or multiple gears when the automobile back door is opened and closed. According to the invention, one or more groups of limiting rollers are arranged on the main rotating arm, and the relative positions of the limiting rollers are calculated, so that the limiting rollers can be subjected to one-gear or multi-gear limiting at the required positions of the vehicle door.

Description

Technical Field

[0001] The invention relates to the field of automobile manufacturing, and in particular to a large opening angle self-limiting tailgate hinge. Background Art

[0002] The commercial vehicle tailgate hinge is a key component that connects the car tailgate to the body. It allows the tailgate to rotate around the same axis and fixes the position of the tailgate for easy opening and closing.

[0003] In the prior art, the limiting method of the hinge of the large opening angle split back door of a light passenger car mainly combines the hinge with the door limiter. As long as the shape and movement trajectory of the connecting rod are reasonably designed, the limiting function can be well achieved. However, because the hinge structure is relatively complex, it is not easy to clean and maintain. After long-term use, it is easy to cause rust, jamming, abnormal noise and other problems, and the reliability is poor. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a large opening angle self-limiting tailgate hinge to meet the needs of three-stage limiting in the tailgate opening stroke and has the characteristics of simple structure, low manufacturing cost and good reliability.

[0005] To achieve the above-mentioned purpose, the present invention designs a large opening angle self-limiting tailgate hinge, including a base installed on the car body, the base is hinged with a main rotating arm, the other end of the main rotating arm is hinged with a secondary rotating arm, and the secondary rotating arm is fixed on the tailgate of the car; a cavity is opened in the middle of the main rotating arm, a connecting rod is arranged in the cavity, and the two ends of the connecting rod are respectively hinged on the base and the secondary rotating arm, a limiting roller assembly is arranged at the end of the main rotating arm away from the secondary rotating arm, a C-shaped torsion bar spring is arranged on the base, and the tail end of the C-shaped torsion bar spring is movably abutted against the top of the limiting roller assembly, and the limiting roller assembly and the C-shaped torsion bar spring enable the tailgate of the car to be limited by one or more gears when opening and closing.

[0006] Preferably, the limiting roller assembly includes two roller mounting plates arranged at intervals, and multiple groups of roller assemblies are fixed on the inner sides of the two roller mounting plates. The roller assembly includes two capped shafts symmetrically arranged on the roller mounting plates, and rotating rollers are mounted on the capped shafts, and adjacent rollers are meshed with each other.

[0007] Preferably, the roller assemblies are in three groups.

[0008] Preferably, the base is provided with a groove and a plurality of mounting through holes located inside the groove; a limiting rubber strip is installed at the end of the base, and the limiting rubber strip includes a rubber strip body, and the rubber strip body is provided with a plurality of mounting columns that cooperate with the mounting through holes.

[0009] Preferably, spring mounting holes are provided on both sides of the base, and the open end of the C-shaped torsion bar spring is movably mounted in the spring mounting hole.

[0010] Preferably, the main rotating arm includes a base plate, side walls are provided on both sides of the bottom of the base plate, first mounting holes are provided at both ends of the side walls, a first main pin shaft is provided between two symmetrically arranged first mounting holes, and a second main pin shaft is provided in the other two symmetrically arranged first mounting holes, a base side hole is provided at the end of the base, the base is hinged to the main rotating arm through the first main pin shaft passing through the base side hole, and the second main pin shaft hinges the secondary rotating arm to the main rotating arm.

[0011] Preferably, an adjusting screw hole is provided at the bottom of the base, an adjusting bolt is provided in the adjusting screw hole, and the adjusting bolt abuts against the bottom of the main rotating arm for limiting position.

[0012] Preferably, both ends of the connecting rod are provided with a second mounting hole, and the second mounting holes are provided with secondary pins; the base and the secondary rotating arm are respectively hinged on the main rotating arm through the secondary pins located at both ends of the main rotating arm.

[0013] Preferably, a base mounting hole is provided on the base.

[0014] Preferably, the auxiliary rotating arm is provided with an auxiliary rotating arm mounting hole.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention sets one or more groups of limit rollers on the main rotating arm. By calculating and setting the relative positions of the limit rollers, the roller assembly and the C-type torsion bar spring can be matched to perform one or more levels of limit at the required limit position of the back door.

[0017] 2. The present invention realizes the compound rotational movement of the base and the auxiliary rotating arm through the two rotational relationships formed by the main rotating arm and the base and the auxiliary rotating arm, and the connecting rod and the base and the auxiliary rotating arm, and can realize the door opening angle of more than 245° to meet the large opening angle requirement of the double-opening back door.

[0018] 3. The present invention arranges a C-shaped torsion bar spring on the base. By setting the pre-twisting angle, spring elasticity and diameter of the C-shaped torsion bar spring, the limiting force when the door is limited can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention;

[0020] Figure 2 A three-dimensional diagram of another viewing angle of the present invention;

[0021] Figure 3 A three-dimensional diagram of the base of the present invention;

[0022] Figure 4 for Figure 3 Explosion effect diagram;

[0023] Figure 5 This is a three-dimensional diagram of the base of the present invention without the limiting rubber strip installed;

[0024] Figure 6 is a three-dimensional diagram of the main rotating arm of the present invention;

[0025] Figure 7 A three-dimensional diagram of the main rotating arm of the engine from another perspective;

[0026] Figure 8 It is a three-dimensional diagram of the connecting rod of the present invention.

[0027] Reference numerals:

[0028] 1 base, 11 groove, 111 mounting through hole, 12 spring mounting hole, 13 base side hole, 14 base mounting hole, 15 adjustment bolt, 16 limit rubber strip, 161 rubber strip body, 162 mounting column,

[0029] 2 main rotating arm, 21 bottom plate, 22 side wall, 221 first mounting hole, 23 first main pin shaft, 24 second main pin shaft,

[0030] 3 pairs of rotating arms, 31 pairs of rotating arm mounting holes,

[0031] 4 connecting rod, 41 second mounting hole, 42 auxiliary pin shaft,

[0032] 5 roller assembly, 51 roller mounting plate, 52 capped shaft, 53 roller,

[0033] 6C type torsion bar spring. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] Example

[0041] like Figures 1 to 8The large opening angle self-limiting back door hinge shown comprises a base 1 mounted on the vehicle body, and a base mounting hole 14 is provided on the base 1. A main rotating arm 2 is hinged on the base 1, and a secondary rotating arm 3 is hinged on the other end of the main rotating arm 2, and a secondary rotating arm mounting hole 31 is provided on the secondary rotating arm 3. The secondary rotating arm 3 is fixed on the back door of the car; a cavity is opened in the middle of the main rotating arm 2, and a connecting rod 4 is arranged in the cavity, and the two ends of the connecting rod 4 are respectively hinged on the base 1 and the secondary rotating arm 3, and a limiting roller assembly 5 is arranged at the end of the main rotating arm 2 away from the secondary rotating arm 3, and a C-type torsion bar spring 6 is provided on the base 1, and spring mounting holes 12 are opened on both sides of the base 1, and the open end of the C-type torsion bar spring 6 is movably installed in the spring mounting hole 12. The tail end of the C-type torsion bar spring 6 movably abuts against the top of the limiting roller assembly 5, and the limiting roller assembly 5 and the C-type torsion bar spring 6 limit the back door of the car in one or more gears when opening and closing. An adjusting screw hole is provided on the base 1 , and an adjusting bolt 15 is provided in the adjusting screw hole. The adjusting bolt 15 abuts against the bottom of the main rotating arm 2 for limiting position.

[0042] The limiting roller assembly 5 includes two roller mounting plates 51 arranged at intervals, three groups of roller assemblies are fixed inside the two roller mounting plates 51, and the roller assembly includes two capped shafts 52 symmetrically arranged on the roller mounting plates 51, and rotating rollers 53 are installed on the capped shafts 52, and adjacent rollers 53 are meshed with each other. The base 1 is provided with a groove 11 and a plurality of mounting through holes 111 located inside the groove 11; a limiting rubber strip 16 is installed at the end of the base 1, and the limiting rubber strip 16 includes a rubber strip body 161, and the rubber strip body 161 has a plurality of mounting posts 162 that match the mounting through holes 111.

[0043] The main rotating arm 2 includes a base plate 21, side walls 22 are provided on both sides of the bottom of the base plate 21, first mounting holes 221 are provided at both ends of the side walls 22, a first main pin shaft 23 is provided between two symmetrically arranged first mounting holes, and a second main pin shaft 24 is provided in the other two symmetrically arranged first mounting holes, a base side hole 13 is provided at the end of the base 1, the base 1 is hinged to the main rotating arm 2 through the first main pin shaft 23 passing through the base side hole 13, and the second main pin shaft 24 hinges the auxiliary rotating arm 3 to the main rotating arm 2.

[0044] Both ends of the connecting rod 4 are provided with a second mounting hole 41 , and each second mounting hole 41 is provided with a secondary pin shaft 42 ; the base 1 and the secondary rotating arm 3 are respectively hinged on the main rotating arm 2 through the secondary pin shafts 42 located at both ends of the main rotating arm 2 .

[0045] The process flow of the present invention during installation and operation is described below:

[0046] After assembling the large opening angle self-limiting tailgate hinge in the above embodiment, fix the base 1 to the vehicle body by bolts in the base mounting hole 14, and fix the auxiliary rotating arm 3 to the tailgate by bolts in the auxiliary rotating arm mounting hole 31; the three roller assemblies are respectively the first roller assembly, the second roller assembly and the third roller assembly from top to bottom. When the door is closed, the tail end of the C-type torsion bar spring 6 abuts against the top of the first roller assembly, and the end of the adjustment bolt 15 abuts against the bottom plate 21.

[0047] Pull the back door. When it is pulled to 93°, the rotation angle of the main rotating arm 2 is 40°, and the tail end of the C-type torsion bar spring 6 slides between the first roller group and the second roller group, and the door achieves the first gear limit; continue to pull the back door to 178°, and the rotation angle of the main rotating arm 2 is 80°. The tail end of the C-type torsion bar spring 6 slides between the second roller group and the third roller group, and the door achieves the second gear limit; continue to pull the back door to 250°, and the rotation angle of the main rotating arm is 120°. The tail end of the C-type torsion bar spring 6 slides to the third group of rollers, and at the same time, the tail end of the main rotating arm 2 abuts against the limiting rubber strip 16 to achieve the third gear limit.

[0048] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A large opening angle self-limiting back door hinge, characterized in that: The invention comprises a base (1) mounted on a vehicle body, wherein a main rotating arm (2) is hingedly connected to the base (1), and a secondary rotating arm (3) is hingedly connected to the other end of the main rotating arm (2), and the secondary rotating arm (3) is fixed on the back door of the vehicle; a cavity is provided in the middle of the main rotating arm (2), and a connecting rod (4) is provided in the cavity, and the two ends of the connecting rod (4) are respectively hingedly connected to the base (1) and the secondary rotating arm (3); a limiting roller assembly (5) is provided at the end of the main rotating arm (2) away from the secondary rotating arm (3); a C-shaped torsion bar spring (6) is provided on the base (1), and the tail end of the C-shaped torsion bar spring (6) is movably abutted against the top of the limiting roller assembly (5); the limiting roller assembly (5) and the C-shaped torsion bar spring (6) enable the back door of the vehicle to be limited in one or more gears when opening and closing.

2. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: The limiting roller assembly (5) comprises two roller mounting plates (51) arranged at an interval, and a plurality of roller assembly groups are fixed on the inner sides of the two roller mounting plates (51). The roller assembly comprises two capped shafts (52) symmetrically arranged on the roller mounting plates (51), and rotating rollers (53) are mounted on the capped shafts (52), and adjacent rollers (53) are meshed with each other.

3. The large opening angle self-limiting tailgate hinge according to claim 2, characterized in that: The roller assemblies are divided into three groups.

4. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: The base (1) is provided with a groove (11) and a plurality of mounting through holes (111) located inside the groove (11); a limiting rubber strip (16) is installed at the end of the base (1), the limiting rubber strip (16) comprises a rubber strip body (161), and the rubber strip body (161) is provided with a plurality of mounting posts (162) that cooperate with the mounting through holes (111).

5. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: Spring mounting holes (12) are provided on both sides of the base (1), and the open ends of the C-shaped torsion bar springs (6) are movably mounted in the spring mounting holes (12).

6. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: The main rotating arm (2) comprises a bottom plate (21), side walls (22) are provided on both sides of the bottom of the bottom plate (21), first mounting holes (221) are provided at both ends of the side walls (22), a first main pin shaft (23) is provided between two symmetrically arranged first mounting holes, and a second main pin shaft (24) is provided in the other two symmetrically arranged first mounting holes, a base side hole (13) is provided at the end of the base (1), the base (1) is hinged to the main rotating arm (2) through the first main pin shaft (23) passing through the base side hole (13), and the second main pin shaft (24) hinges the auxiliary rotating arm (3) to the main rotating arm (2).

7. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: An adjusting screw hole is provided at the bottom of the base (1), an adjusting bolt (15) is provided in the adjusting screw hole, and the adjusting bolt (15) abuts against the bottom of the main rotating arm (2) for limiting position.

8. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: Both ends of the connecting rod (4) are provided with a second mounting hole (41), and a secondary pin shaft (42) is provided in each of the second mounting holes (41); the base (1) and the secondary rotating arm (3) are respectively hinged on the main rotating arm (2) via the secondary pin shafts (42) located at both ends of the main rotating arm (2).

9. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: The base (1) is provided with a base mounting hole (14).

10. The large opening angle self-limiting tailgate hinge according to claim 1, characterized in that: The auxiliary rotating arm (3) is provided with an auxiliary rotating arm mounting hole (31).

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