Commercial vehicle butt-type back door hinge

Abstract

The application discloses a split back door hinge of a commercial vehicle and belongs to the technical field of automobile manufacturing. The back door hinge comprises a base installed on a side wall of a vehicle body, a main rotating arm hingedly connected to the base, an installation seat hingedly connected to one end of the main rotating arm, and a door hingedly connected to the other end of the main rotating arm. A cavity is formed 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 hingedly connected to the base and the installation seat respectively. Slotted grooves and a plurality of limiting recesses located at the bottom of the slotted grooves are formed on the two sides of the connecting rod. Threaded holes are formed in the two side walls of the main rotating arm, a guide pipe is fixed between the threaded holes and the connecting rod, and a ball assembly matched with the slotted grooves is arranged in the guide pipe. The self-limiting structure is realized by the limiting recesses on the hinge and the balls, the traditional limiting arm and the magnetic attraction combined limiting are replaced, and the hinge has the advantages of simple structure, high reliability and low cost.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and more specifically to a double-opening tailgate hinge for commercial vehicles. Background Technology

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

[0003] In existing commercial vehicle technology, two-position limiting is achieved when the door is opened to 90° and 246° using a combination of a limiting arm connecting the door and side panel (at 90°) and a magnetic limiting device connecting the door and side panel (at 246°). Traditional solutions require multiple parts to achieve both-position limiting, as they involve both a limiting arm for 90° and a magnetic limiting device for 246°. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a commercial vehicle double-opening tailgate hinge. Compared with the limiting arm and magnetic combination limiting in the prior art, the self-limiting structure is achieved by the limiting groove and ball bearing on the hinge, replacing the traditional limiting arm and magnetic combination limiting. It has the advantages of simple structure, high reliability and low cost.

[0005] To achieve the above objectives, the present invention provides a commercial vehicle split-opening tailgate hinge, comprising a base mounted on the side panel of the vehicle body, a main rotating arm hinged to the base, and a mounting seat hinged to the other end of the main rotating arm, the mounting seat being mounted on the vehicle door; a cavity is formed in the middle of the main rotating arm, a connecting rod is provided in the cavity, the two ends of the connecting rod are respectively hinged to the base and the mounting seat, a sliding groove and several limiting grooves located at the bottom of the sliding groove are formed on both sides of the connecting rod, threaded through holes are formed on both side walls of the main rotating arm, a guide tube is fixed between the threaded through hole and the connecting rod, and a ball bearing assembly that cooperates with the sliding groove is provided in the guide tube.

[0006] Preferably, the ball assembly includes a ball, a ball seat, a compression spring, and an adjusting bolt that mates with a threaded through hole arranged sequentially along the guide tube, wherein the ball is rolled within a groove.

[0007] Preferably, the ball bearing seat includes a seat body, one end of which is fixed with a spring sleeve bar, and the other end is provided with a rolling groove.

[0008] Preferably, the base is provided with a press-fit bolt, which is used to fix the base to the side panel of the vehicle body.

[0009] Preferably, the limiting groove includes a first limiting groove and a second limiting groove, wherein the first limiting groove is located in the middle region of the slide groove, and the second limiting groove is located at the end of the slide groove stroke.

[0010] Preferably, one end of the base is provided with a limiting member for abutting against the connecting rod to limit the rotation angle of the base on the connecting rod. The limiting member includes a bolt seat, the top of the limiting bolt seat is provided with a bolt hole, a limiting bolt is installed in the bolt hole, the limiting bolt is axially adjustable on the bolt seat, and the end of the limiting bolt abuts against the connecting rod.

[0011] Preferably, the main rotating arm includes a base plate, and the top two sides of the base plate are provided with side walls. The two ends of the side walls are provided with first mounting holes, and the first mounting holes are provided with main rotating pins. The base and the mounting seat are respectively hinged to the main rotating arm through the main rotating pins located at both ends of the main rotating arm.

[0012] Preferably, a master pin shaft is provided between the first mounting hole and the master rotating pin.

[0013] Preferably, each end of the connecting rod is provided with a second mounting hole, and each second mounting hole is provided with a secondary rotating pin; the base and the mounting seat are respectively hinged to the connecting rod by secondary rotating pins located at both ends of the main rotating arm.

[0014] Preferably, a secondary pin shaft is provided between the second mounting hole and the secondary rotating pin.

[0015] The beneficial effects of this invention are:

[0016] This invention achieves a self-limiting structure through the cooperation of the limiting groove on the hinge and the ball bearing, replacing the traditional limiting arm and magnetic combination limiting, and has the advantages of simple structure, high reliability and low cost. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the invention from another angle;

[0019] Figure 3 for Figure 2 An explosion effect diagram;

[0020] Figure 4 This is a perspective view of the main rotating arm of the present invention;

[0021] Figure 5 This is a perspective view of the connecting rod of the present invention;

[0022] Figure 6 for Figure 5 An explosion effect diagram;

[0023] Figure 7 This is a process flow diagram of the commercial vehicle double-opening tailgate hinge used in this invention.

[0024] Figure label:

[0025] 1. Base, 11. Press-fit bolts, 13. Bolt seats, 14. Limit bolts

[0026] 2. Main rotating arm, 21. Threaded through hole, 22. Guide tube, 23. Base plate, 24. Side wall, 241. First mounting hole, 25. Main rotating pin, 26. Main pin shaft.

[0027] 3 mounting bases

[0028] 4-link linkage, 41 slide groove, 42 limiting groove, 43 second mounting hole, 44 set of rotating pins, 45 set of pin shafts,

[0029] 5. Ball assembly, 51. Ball, 52. Ball seat, 521. Seat body, 522. Spring sleeve, 523. Rolling groove, 53. Compression spring, 54. Adjusting bolt. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example

[0037] like Figures 1-6 The commercial vehicle double-opening tailgate hinge shown includes a base 1 mounted on the side panel of the vehicle body. The base 1 has a press-fit bolt 11 for fixing the base 1 to the side panel of the vehicle body. A main rotating arm 2 is hinged to the base 1, and a mounting seat 3 is hinged to the other end of the main rotating arm 2. The mounting seat 3 is mounted on the door. A cavity is formed in the middle of the main rotating arm 2, and a connecting rod 4 is provided inside the cavity. Both ends of the connecting rod 4 are hinged to the base 1 and the mounting seat 3, respectively. A sliding groove 41 and several limiting grooves 42 located at the bottom of the sliding groove 41 are formed on both sides of the connecting rod 4. The limiting grooves 42 include a first limiting groove 421 and a second limiting groove 422. The first limiting groove 421 is located in the middle region of the sliding groove 41, and the second limiting groove 422 is located at the end of the travel of the sliding groove 41. Threaded through holes 21 are provided on both sides of the main rotating arm 2. A guide tube 22 is fixed between the threaded through hole 21 and the connecting rod 4. A ball assembly 5 that cooperates with the slide groove 41 is provided inside the guide tube 22.

[0038] The ball assembly 5 includes a ball 51, a ball seat 52, a compression spring 53, and an adjusting bolt 54 that mates with a threaded through hole 21, arranged sequentially along the guide tube 22. The ball 51 is rolled within the slide groove 41. The ball seat 52 includes a seat body 521, one end of which is fixed with a spring sleeve 522, and the other end has a rolling groove 523.

[0039] One end of the base 1 is provided with a limiting member for abutting against the connecting rod 4 to limit the rotation angle of the base on the connecting rod 4. The limiting member includes a bolt seat 13. The top of the limiting bolt seat 13 is provided with a bolt hole. A limiting bolt 14 is installed in the bolt hole. The limiting bolt 14 is axially adjustable on the bolt seat 13. The end of the limiting bolt 14 abuts against the connecting rod 4.

[0040] The main rotating arm 2 includes a base plate 23. Side walls 24 are provided on both sides of the top of the base plate 23. First mounting holes 241 are provided at both ends of each side wall 24, and main rotating pins 25 are installed within the first mounting holes 241. The base 1 and mounting seat 3 are hinged to the main rotating arm 2 via the main rotating pins 25 located at both ends of the main rotating arm 2. A main pin shaft 26 is provided between the first mounting holes 241 and the main rotating pins 25.

[0041] Both ends of the connecting rod 4 are provided with second mounting holes 43, and each second mounting hole 43 is provided with a secondary rotating pin 44; the base 1 and the mounting seat 3 are respectively hinged to the connecting rod 4 through the secondary rotating pins 44 located at both ends of the main rotating arm 2. A secondary pin shaft 45 is provided between the second mounting holes 43 and the secondary rotating pins 44.

[0042] The following describes the installation and usage process of this invention:

[0043] After assembling the commercial vehicle split-opening tailgate hinge in the embodiment, the base 1 is fixed to the side panel of the vehicle body by the press-fit bolts 11, and the mounting seat 3 is fixed to the tailgate by bolts.

[0044] like Figure 7 As shown, when the back door is pulled to 90°, the main rotating arm 2 rotates at an angle of 50.6°, and the ball bearing 51 rolls into the first limiting groove 421 along the sliding groove 41. When the back door is pulled to 245.6°, the main rotating arm 2 rotates at an angle of 125°, and the ball bearing rolls into the second limiting groove 422 along the sliding groove 41.

[0045] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A hinge for a double-opening rear door of a commercial vehicle, characterized in that: The system includes a base (1) mounted on the side of the vehicle body, a main rotating arm (2) hinged to the base (1), and a mounting seat (3) hinged to the other end of the main rotating arm (2). The mounting seat (3) is mounted on the door. A cavity is provided in the middle of the main rotating arm (2), and a connecting rod (4) is provided in the cavity. The two ends of the connecting rod (4) are respectively hinged to the base (1) and the mounting seat (3). A sliding groove (41) and several limiting grooves (42) located at the bottom of the sliding groove (41) are provided on both sides of the connecting rod (4). The main rotating arm (2) has threaded through holes (21) on both sides of its side walls. A guide tube (22) is fixed between the threaded through hole (21) and the connecting rod (4). A ball assembly (5) that cooperates with the slide groove (41) is provided in the guide tube (22). The limiting groove (42) includes a first limiting groove (421) and a second limiting groove (422). The first limiting groove (421) is located in the middle area of ​​the slide groove (41), and the second limiting groove (422) is located at the end of the slide groove (41) stroke.

2. The commercial vehicle double-opening tailgate hinge according to claim 1, characterized in that: The ball assembly (5) includes a ball (51), a ball seat (52), a compression spring (53), and an adjusting bolt (54) that cooperates with the threaded through hole (21) arranged sequentially along the guide tube (22). The ball (51) is rolled in the groove (41).

3. The commercial vehicle double-opening tailgate hinge according to claim 2, characterized in that: The ball bearing seat (52) includes a seat body (521), one end of which is fixed with a spring sleeve bar (522), and the other end is provided with a rolling groove (523).

4. The commercial vehicle double-opening tailgate hinge according to claim 1, characterized in that: The base (1) is provided with a rivet bolt (11), which is used to fix the base (1) to the side panel of the vehicle body.

5. The commercial vehicle double-opening tailgate hinge according to claim 1, characterized in that: The base (1) is provided with a limiting member at one end for abutting the connecting rod (4) to limit the rotation angle of the base on the connecting rod (4). The limiting member includes a bolt seat (13). The top of the bolt seat (13) is provided with a bolt hole. A limiting bolt (14) is installed in the bolt hole. The limiting bolt (14) is axially adjustable on the bolt seat (13). The end of the limiting bolt (14) abuts the connecting rod (4).

6. The commercial vehicle double-opening tailgate hinge according to claim 1, characterized in that: The main rotating arm (2) includes a base plate (23), and side walls (24) are provided on both sides of the top of the base plate (23). The two ends of the side walls (24) are provided with first mounting holes (241), and main rotating pins (25) are provided in the first mounting holes (241). The base (1) and the mounting seat (3) are respectively hinged to the main rotating arm (2) through the main rotating pins (25) located at both ends of the main rotating arm (2).

7. The commercial vehicle double-opening tailgate hinge according to claim 6, characterized in that: A master pin shaft (26) is provided between the first mounting hole (241) and the master rotating pin (25).

8. The commercial vehicle double-opening tailgate hinge according to claim 1, characterized in that: The connecting rod (4) has a second mounting hole (43) at both ends, and a secondary rotating pin (44) is provided in the second mounting hole (43); the base (1) and the mounting seat (3) are respectively hinged to the connecting rod (4) by the secondary rotating pins (44) located at both ends of the main rotating arm (2).

9. The commercial vehicle double-opening tailgate hinge according to claim 8, characterized in that: A secondary pin shaft (45) is provided between the second mounting hole (43) and the secondary rotating pin (44).

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