Vehicle door hinge and vehicle

Abstract

Provided are a door hinge (100) and a vehicle. The door hinge (100) includes: a first mounting seat (1), a first connecting rod (3), a second mounting seat (2), a second connecting rod (4) and a third connecting rod (5), where a first mounting shaft seat (11) and a second mounting shaft seat (12) are disposed on the first mounting seat (1), one end of the first connecting rod (3) is hinged to the first mounting shaft seat (11), the other end of the first connecting rod (3) is hinged to the second mounting seat (2), the second connecting rod (4) is hinged to the second mounting shaft seat (12), one end of the third connecting rod (5) is hinged to the other end of the second connecting rod (4), and the other end of the third connecting rod (5) is hinged to the second mounting seat (12).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure is based on and claims priority to Chinese Patent Application No. 202322290653.5 filed on August 24, 2023, which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the field of vehicle technologies, and in particular, to a door hinge and a vehicle.BACKGROUND

[0003] With the continuous development of new energy vehicles, various new door technologies are constantly being applied to the market. As a personalized design, scissors doors have more fashionable appearances. In recent years, more and more vehicles are equipped with electric scissors doors, demonstrating significant market appeal.

[0004] In the related art, a door hinge of a scissors door usually uses a four-connecting rod mechanism, and such a door hinge has relatively high requirements on a production process and the assembly precision during mounting. Otherwise, the door is prone to getting stuck when being opened or closed, causing bad experience for a vehicle owner.SUMMARY

[0005] An objective of embodiments of the present disclosure is to provide a door hinge and a vehicle.

[0006] According to a first aspect of the embodiments of the present disclosure, a door hinge is provided, including: a first mounting seat, where a first mounting shaft seat and a second mounting shaft seat are disposed on the first mounting seat; a first connecting rod, where one end of the first connecting rod is hinged to the first mounting shaft seat; a second mounting seat, where the other end of the first connecting rod is hinged to the second mounting seat; a second connecting rod, where one end of the second connecting rod is hinged to the second mounting shaft seat; and a third connecting rod, where one end of the third connecting rod is hinged to the other end of the second connecting rod, and the other end of the third connecting rod is hinged to the second mounting seat.

[0007] Optionally, the first connecting rod and the first mounting shaft seat are hinged to form a first rotation axis, the first connecting rod and the second mounting seat are hinged to form a second rotation axis, the second connecting rod and the second mounting shaft seat are hinged to form a third rotation axis, and the third connecting rod and the second connecting rod are hinged to form a fourth rotation axis; and projections of the first rotation axis, the second rotation axis, the third rotation axis, and the fourth rotation axis onto an XY plane have a plurality of intersection points.

[0008] Optionally, the first connecting rod is connected to the first mounting shaft seat via a revolute pair, the first connecting rod is connected to the second mounting seat via a revolute pair, the second connecting rod is connected to the second mounting shaft seat via a revolute pair, the second connecting rod is connected to the third connecting rod via a revolute pair, and the third connecting rod is hinged to the second mounting seat via a ball joint pair.

[0009] Optionally, the first rotation axis formed by the first connecting rod and the first mounting shaft seat intersects the second rotation axis formed by the first connecting rod and the second mounting seat.

[0010] Optionally, the third rotation axis formed by the second connecting rod and the second mounting shaft seat is parallel to the fourth rotation axis formed by the third connecting rod and the second connecting rod.

[0011] Optionally, the third rotation axis and the fourth rotation axis are perpendicular to an XZ plane.

[0012] Optionally, in a closed state of a door, a plane formed by the first rotation axis and the second rotation axis is a first plane, and an included angle between the first plane and the XZ plane is less than π / 18.

[0013] Optionally, the first mounting shaft seat is provided with a first limiting portion, and the first limiting portion has a first limiting plane; the first connecting rod is provided with a second limiting portion, and the second limiting portion has a second limiting plane; in the closed state of the door, an included angle between the second limiting plane and the first limiting plane ranges from π / 2 to 2π / 3; and in an open state of the door, the first limiting plane and the second limiting plane can cooperate with each other for limiting.

[0014] Optionally, ball pin mounting seats are disposed on the second mounting seat, and the ball pin mounting seat is configured to connect to a driving component and / or a limiting component.

[0015] Optionally, reinforcing ribs are provided on both sides of a mounting surface of the ball pin mounting seat.

[0016] According to a second aspect of the embodiments of the present disclosure, a vehicle is provided, including: the door hinge as described in any one of the foregoing items; a door, where the second mounting seat is mounted to the door; and a vehicle body, where the first mounting seat is mounted to the vehicle body.

[0017] A technical effect of the embodiments of the present disclosure is that the door hinge in the present disclosure is a spatial five-connecting rod mechanism by means of hinging relationships among the first connecting rod, the second connecting rod, the third connecting rod, the second mounting seat, and the first mounting seat, so that requirements on the production precision and the assembly precision can be reduced, and the production efficiency can be improved.

[0018] Other features of the present disclosure and advantages thereof become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to accompanying drawings.BRIEF DESCRIPTION OF DRAWINGS

[0019] Accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure. FIG. 1 is a schematic diagram of a door hinge in a closed state according to an embodiment of the present disclosure; FIG. 2 is a schematic diagram of a door hinge in a closed state according to an embodiment of the present disclosure; FIG. 3 is a partially enlarged view of a door hinge according to an embodiment of the present disclosure; FIG. 4 is a schematic diagram of a door hinge in a closed state according to an embodiment of the present disclosure; FIG. 5 is a schematic diagram of a door hinge in a closed state according to an embodiment of the present disclosure; FIG. 6 is a schematic diagram of a door hinge in an open state according to an embodiment of the present disclosure; FIG. 7 is a schematic diagram of a door hinge in an open state according to an embodiment of the present disclosure; FIG. 8 is a structural schematic diagram of a ball pin mounting seat of a door hinge according to an embodiment of the present disclosure; and FIG. 9 is a partially enlarged view of a door hinge according to an embodiment of the present disclosure.

[0020] Reference numerals: door hinge 100; first mounting seat 1; first mounting shaft seat 11; first limiting portion 111; first limiting plane 1111; second mounting shaft seat 12; second mounting seat 2; ball pin mounting seat 21; reinforcing rib 211; wire harness mounting hole 22; first connecting rod 3; second limiting portion 31; second limiting plane 311; second connecting rod 4; third connecting rod 5; ball joint pair 6; ball stud 61; ball socket 62; first rotation axis L1; second rotation axis L2; third rotation axis L3; fourth rotation axis L4.DESCRIPTION OF EMBODIMENTS

[0021] Various exemplary embodiments of the present disclosure are now described in detail with reference to accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure.

[0022] The following description of at least one exemplary embodiment is merely illustrative actually and is in no way intended to limit the present disclosure and application or use thereof.

[0023] Techniques, methods, and apparatuses known to those of ordinary skill in the related art may not be discussed in detail, but should be considered as a part of the specification where appropriate.

[0024] In all examples shown and discussed herein, any specific values should be construed as being merely exemplary and not limiting. Accordingly, other examples of the exemplary embodiments may have different values.

[0025] It should be noted that: similar reference numerals and letters refer to similar items in the following accompanying drawings, and therefore, once an item is defined in one accompanying drawing, it is not necessary to further discuss the item in the following accompanying drawings.

[0026] First, it is clarified that: with regard to an X axis and an X direction, a Y axis and a Y direction, and a Z axis and a Z direction mentioned in the present disclosure, an XY plane refers to a plane formed by the X axis and the Y axis, and an XZ plane refers to a plane formed by the X axis and the Z axis. For details, reference may be made to directions denoted in FIG. 1 and FIG. 7, and directions in other accompanying drawings are similar thereto.

[0027] As shown in FIG. 1 to FIG. 9, an embodiment of the present disclosure provides a door hinge 100, including a first mounting seat 1, a second mounting seat 2, a first connecting rod 3, a second connecting rod 4, and a third connecting rod 5, where a first mounting shaft seat 11 and a second mounting shaft seat 12 are disposed on the first mounting seat 1; one end of the first connecting rod 3 is hinged to the first mounting shaft seat 11; the other end of the first connecting rod 3 is hinged to the second mounting seat 2, and one end of the second connecting rod 4 is hinged to the second mounting shaft seat 12; and one end of the third connecting rod 5 is hinged to the other end of the second connecting rod 4, and the other end of the third connecting rod 5 is hinged to the second mounting seat 2.

[0028] As shown in FIG. 1, FIG. 2, FIG. 4, and FIG. 5, in one implementation of the present disclosure, the door hinge 100 includes the first mounting seat 1, the second mounting seat 2, the first connecting rod 3, the second connecting rod 4, and the third connecting rod 5.

[0029] The first mounting seat 1 is configured to be mounted and fastened to a vehicle body. The first mounting seat 1 may be mounted and fastened to the vehicle body by welding, screwing, gluing, or the like, and screwing may be used for facilitating assembly and replacement.

[0030] As shown in FIG. 1, the first mounting shaft seat 11 and the second mounting shaft seat 12 are disposed on the first mounting seat 1.

[0031] The first mounting shaft seat 11 is fastened to the first mounting seat 1, and the first mounting shaft seat 11 may be integrated with the first mounting seat 1 by means of integral molding; and the first mounting shaft seat 11 may also be fastened to the first mounting seat 1 by screwing, welding or gluing.

[0032] In one implementation, the first mounting shaft seat 11 includes a first limiting seat and a second limiting seat disposed at intervals, where one end of the first connecting rod 3 is provided with a rotating shaft, the rotating shaft is disposed between the first limiting seat and the second limiting seat, and the rotating shaft is rotatably connected to the first limiting seat and the second limiting seat, so that the first connecting rod 3 can rotate around the rotating shaft. In another implementation, each of the first limiting seat, the second limiting seat, and one end of the first connecting rod 3 is provided with a shaft hole, the rotating shaft runs through the shaft holes, so that the first connecting rod 3 can rotate around the rotating shaft.

[0033] The second mounting shaft seat 12 is fastened to the first mounting seat 1, and the second mounting shaft seat 12 may be integrated with the first mounting seat 1 by means of integral molding; and the second mounting shaft seat 12 may also be fastened to the first mounting seat 1 by welding or gluing.

[0034] In one implementation, the second mounting shaft seat 12 may be a pin shaft, one end of the second connecting rod 4 is provided with a shaft hole, and the shaft hole of the second connecting rod 4 is rotatably connected to the pin shaft, so that the second connecting rod 4 can rotate around the pin shaft. In other implementations, the second mounting shaft seat 12 and the second connecting rod 4 may be rotatably connected via a shaft and a bearing.

[0035] As shown in FIG. 1, one end of the third connecting rod 5 is hinged to the other end of the second connecting rod 4. The second connecting rod 4 and the third connecting rod 5 may be connected via a pin shaft, or a rotary shaft is disposed at the end of one of the second connecting rod 4 and the third connecting rod 5 and the other is provided with a shaft hole, and the second connecting rod 4 and the third connecting rod 5 are rotatably connected via the rotary shaft and the shaft hole, so that the third connecting rod 5 and the second connecting rod 4 can relatively rotate around the rotary shaft.

[0036] As shown in FIG. 1, the second mounting seat 2 is configured to be mounted and fastened to a door. The second mounting seat 2 may be mounted and fastened to the door by welding, screwing, gluing, or the like, and screwing may be used for facilitating assembly and replacement.

[0037] The second mounting seat 2 has a first mounting point and a second mounting point, where the first mounting point is hinged to the first connecting rod 3, and the second mounting point is hinged to the third connecting rod 5.

[0038] Two mounting bases are disposed at intervals at the first mounting point, a rotary shaft is disposed at the other end of the first connecting rod 3, and the first connecting rod 3 is rotatably connected to the mounting bases via the rotary shaft, so that the first connecting rod 3 and the second mounting seat 2 can relatively rotate around the rotary shaft. In another implementation, each of the other end of the first connecting rod 3 and the two mounting bases is provided with a shaft hole, and the first connecting rod 3 and the second mounting seat 2 are rotatably connected via a rotary shaft and the shaft holes, so that the first connecting rod 3 and the second mounting seat 2 can relatively rotate around the rotary shaft.

[0039] The second mounting point is hinged to the other end of the third connecting rod 5.

[0040] In the prior art, a door hinge 100 of a scissors door generally uses a spatial spherical four-connecting rod mechanism. In such arrangement, rotation axes of three rotary shafts of the spatial spherical four-connecting rod mechanism need to intersect at a point so as to smoothly open a door. When the door hinge 100 is mounted, relatively high assembly precision is required, and if there is an error, a jamming phenomenon is caused during opening and closing of the door.

[0041] As shown in FIG. 1, the door hinge 100 of the present disclosure uses a spatial five-connecting rod mechanism, so that during mounting, the first connecting rod 3 is hinged to the first mounting shaft seat 11, the second connecting rod 4 is separately hinged to the second mounting shaft seat 12 and the second mounting seat 2, and the third connecting rod 5 is hinged to the second connecting rod 4, without affecting one another. In addition, when the third connecting rod 5 is hinged to the second mounting seat 2, the second connecting rod 4 and the third connecting rod 5 can rotate relatively, thereby providing a relative free space for mounting of the third connecting rod 5 and the second mounting seat 2. Therefore, when being assembled to the door and the vehicle body, the door hinge 100 provided in the present disclosure requires relatively low assembly precision, and is easy to mount, thereby improving the production efficiency.

[0042] During opening of the door hinge 100 of the present disclosure, namely, during opening of the door, the first connecting rod 3 rotates around a first rotation axis L1, the second mounting seat 2 rotates around a second rotation axis L2, and the second connecting rod 4 rotates around a third rotation axis L3. The second connecting rod 4 and the second mounting seat 2 are hinged via a ball joint pair 6, and the other end of the second connecting rod 4 rotates around a rotation axis of the ball joint pair, so that during opening of the door hinge 100, movement of the door is simplified into a synergistic movement around three rotation axes and one ball joint pair 6; therefore, a movement track of the door is consistent and the movement of the door has relatively high stability.

[0043] In some embodiments of the present disclosure, the first connecting rod 3 is hinged to the first mounting shaft seat 11 to form a first rotation axis L1, and the first connecting rod 3 is hinged to the second mounting seat 2 to form a second rotation axis L2, the second connecting rod 4 is hinged to the second mounting shaft seat 12 to form a third rotation axis L3, and the third connecting rod 5 is hinged to the second connecting rod 4 to form a fourth rotation axis L4; and projections of the first rotation axis L1, the second rotation axis L2, the third rotation axis L3, and the fourth rotation axis L4 onto the XY plane have a plurality of intersection points.

[0044] The intersection points mentioned in the present disclosure may be in a same plane or may be in space.

[0045] As shown in FIG. 4 and FIG. 5, the first rotation axis L1, the second rotation axis L2, the third rotation axis L3, and the fourth rotation axis L4 have a plurality of intersection points.

[0046] In a first implementation, the first rotation axis L1 and the second rotation axis L2 have an intersection point, and the first rotation axis L1 and the second rotation axis L2 each have intersection points with the third rotation axis L3 and the fourth rotation axis L4, so that during assembly, the door hinge 100 has a relatively high degree of assembly freedom, requires relatively low assembly precision, and is easy to mount, thereby improving the production efficiency.

[0047] In a second implementation, the first rotation axis L1, the second rotation axis L2, and the third rotation axis L3 have intersection points, and the first rotation axis L1, the second rotation axis L2, and the fourth rotation axis L4 have intersection points.

[0048] In some embodiments of the present disclosure, the first connecting rod 3 is connected to the first mounting shaft seat 11 via a revolute pair, the first connecting rod 3 is connected to the second mounting seat 2 via a revolute pair, the second connecting rod 4 is connected to the second mounting shaft seat 12 via a revolute pair, the second connecting rod 4 is connected to the third connecting rod 5 via a revolute pair, and the third connecting rod 5 is connected to the second mounting seat 2 via a ball joint pair 6.

[0049] Via the revolute pairs, the first connecting rod 3 is connected to the first mounting shaft seat 11, the first connecting rod 3 is connected to the second mounting shaft seat 12, the second connecting rod 4 is connected to the second mounting seat 2, and the second connecting rod 4 is connected to the third connecting rod 5; and the third connecting rod 5 is connected to the second mounting seat 2 via the ball joint pair.

[0050] The ball joint pair 6 includes a ball stud 61 and a ball socket 62. The ball stud 61 is disposed at the other end of the third connecting rod 5, the ball socket 62 is disposed on the second mounting seat 2, and the ball stud 61 is hinged to the ball socket 62.

[0051] As shown in FIG. 1 and FIG. 3, the ball stud 61 is disposed at the other end of the third connecting rod 5, and the ball stud 61 may be fastened to the third connecting rod 5 in a connection manner of riveting, screwing, or welding.

[0052] The ball socket 62 is disposed at the second mounting point of the second mounting seat 2, where the ball socket 62 may be fastened to the second mounting seat 2 in a connection manner of riveting, screwing, or welding.

[0053] When the ball stud 61 is assembled to the ball socket 62, the ball stud 61 is inserted into the ball socket 62, and the ball stud 61 can relatively rotate in the ball socket 62.

[0054] In some embodiments of the present disclosure, the first rotation axis L1 formed by the first connecting rod 3 and the first mounting shaft seat 11 intersects the second rotation axis L1 formed by the first connecting rod 3 and the second mounting seat 1.

[0055] The first rotation axis L1 intersects the second rotation axis L2, the first rotation axis L1 separately intersects the third rotation axis L3 and the fourth rotation axis L4, and the second rotation axis L2 separately intersects the third rotation axis L3 and the fourth rotation axis L4, so that the rotation axes have a plurality of intersection points; therefore, during assembly, the door hinge 100 has a relatively high degree of assembly freedom, requires relatively low assembly precision, and is easy to mount, thereby improving the production efficiency.

[0056] In some embodiments of the present disclosure, the third rotation axis L3 formed by the second connecting rod 4 and the second mounting shaft seat 12 is parallel to the fourth rotation axis L4 formed by the third connecting rod 5 and the second connecting rod 4.

[0057] The third rotation axis L3 is parallel to the fourth rotation axis L4, so that the first rotation axis L1, the second rotation axis L2, the third rotation axis L3, and the fourth rotation axis L4 do not intersect at one point; therefore, during assembly, the door hinge 100 has a relatively high degree of assembly freedom, requires relatively low assembly precision, and is easy to mount, thereby improving the production efficiency.

[0058] In some embodiments of the present disclosure, the third rotation axis L3 and the fourth rotation axis L4 are perpendicular to the XZ plane.

[0059] As shown in FIG. 5, both the third rotation axis L3 and the fourth rotation axis L4 are perpendicular to the XZ plane, the third rotation axis L3 and the fourth rotation axis L4 are parallel to each other, and the third rotation axis L3 and the fourth rotation axis L4 are perpendicular to the XZ plane, so that a requirement on the assembly accuracy of the door hinge 100 can be reduced. In addition, during opening and closing of the door, movement between the second connecting rod 4 and the second mounting shaft seat 12 and movement between the third connecting rod 5 and the second connecting rod 4 are smoother, thereby avoiding a jamming phenomenon.

[0060] As shown in FIG. 1 and FIG. 4, in some embodiments of the present disclosure, in a closed state of the door, a plane enclosed by the first rotation axis L1 and the second rotation axis L2 is a first plane, and an included angle between the first plane and the XZ plane is less than π / 18.

[0061] Two lines can form a plane, and the first rotation axis L1 and the second rotation axis L2 enclose the first plane.

[0062] The XZ plane is a plane formed by the X direction and the Z direction as marked in the drawings.

[0063] The included angle between the first plane and the XZ plane is less than π / 18, where π refers to 180 degrees; and at this angle, the second mounting seat 2 can move within a relatively large angle range in the Z direction.

[0064] As shown in FIG. 9, in some embodiments of the present disclosure, the first mounting shaft seat 11 is provided with a first limiting portion 111, and the first limiting portion 111 has a first limiting plane 1111; the first connecting rod 3 is provided with a second limiting portion 31, and the second limiting portion 31 has a second limiting plane 311; and an included angle between the second limiting plane 311 and the first limiting plane 1111 ranges from π / 2 to 2π / 3.

[0065] The first mounting shaft seat 11 is provided with the first limiting portion 111, where the first limiting plane 1111 is a surface of the first limiting portion 111. A first mounting seat plane refers to a plane in which the first mounting shaft seat 11 is fastened to the first mounting seat 1.

[0066] The first connecting rod 3 is provided with the second limiting portion 31, where the second limiting plane 311 is a surface of the second limiting portion 31. When the first connecting rod 3 rotates to a preset angle, the second limiting plane 311 can cooperate with the first limiting plane 1111 for limiting.

[0067] During opening of the door, the first connecting rod 3 rotates towards the Y direction, and the second limiting portion 311 can cooperate with the first limiting portion 1111 for limiting, so that the maximum angle of rotation of the first connecting rod 3 is limited via the first limiting portion 1111. In the closed state of the door, an included angle between the first limiting plane 1111 and the first mounting seat plane is less than π / 36, and the included angle between the second limiting plane 311 and the first limiting plane 1111 is π / 2 to 2π / 3. When the first connecting rod 3 rotates around the first rotation axis L1 to an angle of π / 2 to 2π / 3, the door hinge 100 encounters a hard stop point, and a soft stop can be achieved via an electric spring, a pneumatic spring or a balance spring before the first connecting rod 3 rotates around the first rotation axis L1 to an angle of (π / 2-π / 36) to (2π / 3-π / 36). Therefore, the first connecting rod 3 or the second mounting seat 2 can be prevented from colliding with other components.

[0068] In some embodiments of the present disclosure, the first rotation axis L1 and the second rotation axis L2 each form an included angle with the Y axis.

[0069] The first rotation axis L1 forms a first included angle with the Y axis, and the second rotation axis L2 forms a second included angle with the Y axis. The movement track of the door hinge 100 can be determined via the first included angle and the second included angle, so that the door is opened and closed along the movement track. The first included angle and the second included angle can be selected according to actual needs, which are not specifically limited in the present disclosure.

[0070] In some embodiments of the present disclosure, during opening of the door, the second mounting seat 2 moves, the first connecting rod 3 can perform a unidirectional rotation around the first rotation axis L1, and the second connecting rod 4 can perform a reciprocating rotation around the third rotation axis L3.

[0071] In the present disclosure, during opening of the door, the state of the door is changed from a closed state to an open state.

[0072] As shown in FIG. 6 and FIG. 8, during opening of the door, the second mounting seat 2 moves spatially. At the beginning of an opening movement, the first connecting rod 3 performs a fixed-axis rotation around the first rotation axis L1, and at this time, the second mounting seat 2 and the third connecting rod 5 perform a spherical rotation under the action of the ball joint pair 6, thereby driving the third connecting rod 5 to make a planar movement and the second connecting rod 4 to perform a fixed-axis rotation around the second rotation axis L2. During the movement, the first connecting rod 3 performs a unidirectional rotational action around the first rotation axis L1, and the second connecting rod 4 performs a reciprocating swinging action around the third rotation axis L3. The mechanism is a movement mechanism including four revolute pairs and one spherical pair, the first rotation axis L1, the second rotation axis L2, the third rotation axis L3, and the fourth rotation axis L4 are used as revolute pairs, and the ball joint pair 6 is used as the spherical pair, so that the spatial five-connecting rod mechanism is formed. The synergistic movement of the four revolute pairs and one spherical pair enables the movement track of the door to be consistent, so that the movement of the door has relatively high stability.

[0073] As shown in FIG. 7, during the movement, the second mounting seat 2 moves along the Y direction and the Z direction, having an arc-shaped movement track, namely a cosine state equation movement track; finally, the second mounting seat 2 presents an open state, so that a combined movement action of opening sideways first and then rotating upwards is achieved; and a side opening angle is less than π / 4, and an upward rotation angle is less than 5π / 18.

[0074] In some embodiments of the present disclosure, ball pin mounting seats 21 are disposed on the second mounting seat 2, and the ball pin mounting seat 21 is configured to connect to a driving component and / or a limiting component.

[0075] As shown in FIG. 1 and FIG. 8, the ball pin mounting seat 21 is disposed on the second mounting seat 2, so as to mount the driving component and / or the limiting component. It should be further illustrated that the ball pin mounting seat is configured to connect to an electric spring, a pneumatic spring or a balance spring.

[0076] In some embodiments of the present disclosure, reinforcing ribs 211 are provided on both sides of a mounting surface of the ball pin mounting seat 21, which can improve the local stiffness of the second mounting seat 2 and the stability of controlling the door by the second mounting seat 2.

[0077] In some embodiments of the present disclosure, a wire harness mounting hole 22 is formed in the second mounting seat 2, so as to provide a wiring passage for a wire harness and fix the wire harness.

[0078] According to a second aspect of the embodiments of the present disclosure, a vehicle is provided, including the foregoing door hinge 100, a door, and a vehicle body, where the second mounting seat 2 is mounted to the door, and the first mounting seat 1 is mounted to the vehicle body.

[0079] Although some specific embodiments of the present disclosure have been described in detail by means of examples, a person skilled in the art should understand that the foregoing examples are merely used for illustration, but are not intended to limit the scope of the present disclosure. It should be understood by a person skilled in the art that modifications may be made to the foregoing embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A door hinge, comprising: a first mounting seat, wherein a first mounting shaft seat and a second mounting shaft seat are disposed on the first mounting seat; a first connecting rod, wherein one end of the first connecting rod is hinged to the first mounting shaft seat; a second mounting seat, wherein the other end of the first connecting rod is hinged to the second mounting seat; a second connecting rod, wherein one end of the second connecting rod is hinged to the second mounting shaft seat; and a third connecting rod, wherein one end of the third connecting rod is hinged to the other end of the second connecting rod, and the other end of the third connecting rod is hinged to the second mounting seat.

2. The door hinge according to claim 1, wherein the first connecting rod and the first mounting shaft seat are hinged to form a first rotation axis, the first connecting rod and the second mounting seat are hinged to form a second rotation axis, the second connecting rod and the second mounting shaft seat are hinged to form a third rotation axis, and the third connecting rod and the second connecting rod are hinged to form a fourth rotation axis; and projections of the first rotation axis, the second rotation axis, the third rotation axis, and the fourth rotation axis onto an XY plane have a plurality of intersection points.

3. The door hinge according to claim 1 or 2, wherein the first connecting rod is connected to the first mounting shaft seat via a revolute pair, the first connecting rod is connected to the second mounting seat via a revolute pair, the second connecting rod is connected to the second mounting shaft seat via a revolute pair, the second connecting rod is connected to the third connecting rod via a revolute pair, and the third connecting rod is hinged to the second mounting seat via a ball joint pair.

4. The door hinge according to claim 3, wherein the first rotation axis formed by the first connecting rod and the first mounting shaft seat intersects the second rotation axis formed by the first connecting rod and the second mounting seat.

5. The door hinge according to claim 3 or 4, wherein the third rotation axis formed by the second connecting rod and the second mounting shaft seat is parallel to the fourth rotation axis formed by the third connecting rod and the second connecting rod.

6. The door hinge according to claim 5, wherein the third rotation axis and the fourth rotation axis are perpendicular to an XZ plane.

7. The door hinge according to claim 2, wherein in a closed state of a door, a plane formed by the first rotation axis and the second rotation axis is a first plane, and an included angle between the first plane and the XZ plane is less than π / 18.

8. The door hinge according to any one of claims 1 to 7, wherein the first mounting shaft seat is provided with a first limiting portion, and the first limiting portion has a first limiting plane; the first connecting rod is provided with a second limiting portion, and the second limiting portion has a second limiting plane; in the closed state of the door, an included angle between the second limiting plane and the first limiting plane ranges from π / 2 to 2π / 3; and in an open state of the door, the first limiting plane and the second limiting plane can cooperate with each other for limiting.

9. The door hinge according to any one of claims 1 to 8, wherein ball pin mounting seats are disposed on the second mounting seat, and the ball pin mounting seat is configured to connect to a driving component and / or a limiting component.

10. The door hinge according to claim 9, wherein reinforcing ribs are provided on both sides of a mounting surface of the ball pin mounting seat.

11. A vehicle, comprising: the door hinge according to any one of claims 1 to 10; a door, wherein the second mounting seat is mounted to the door; and a vehicle body, wherein the first mounting seat is mounted to the vehicle body.

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