Scissor door hinge and vehicle
The Bennett mechanism, composed of a hinge base, hinge arm, and spatial linkage, solves the problems of high precision requirements and high defect rate in existing scissor door hinge structures, enabling continuous and smooth door movement and simplifying design and layout, making it suitable for mass production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGFENG MOTOR GRP
- Filing Date
- 2023-07-20
- Publication Date
- 2026-05-29
AI Technical Summary
Existing scissor door hinge structures have extremely high requirements for manufacturing and assembly precision, and are prone to problems such as uneven movement and jamming, resulting in a high product defect rate and significant design and layout difficulties.
The Bennett mechanism consists of a hinge base, a hinge arm, and a spatial link. The hinge arm rotates through four pins to achieve the curved movement of the door, simplifying it to a single degree of freedom and reducing the requirements for manufacturing and assembly precision.
It achieves continuous, smooth, stable, and reliable opening and closing movements of the doors, reducing product defect rates and improving the flexibility and efficiency of manufacturing and assembly, making it suitable for mass production.
Smart Images
Figure CN116838204B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive door hinge technology, and in particular to a scissor door hinge and a vehicle. Background Technology
[0002] Scissor doors, as a personalized design, are generally only used on supercars. Their unique and novel door opening and closing method gives the vehicle a more technological and futuristic feel, always attracting the attention of many users and becoming a major selling point for many manufacturers. Modified scissor doors are also frequently seen on the market, but their opening method typically requires first opening outwards to the maximum extent before flipping upwards to the maximum position; closing is the opposite. Opening or closing the door requires two steps, and each step allows the door to open or close in only one direction. This opening method results in a poor user experience, with less smooth movement and poor ergonomics when opening and closing the door.
[0003] Existing automotive scissor door hinges in China include, for example, Chinese patent CN202010550793.X, entitled "A door hinge and a vehicle". The door hinge discloses a hinge mounting base, a hinge height axis block, a hinge arm, and a hinge opening axis block, which are connected to each other by four hinge axes, forming four rotation axes: a first rotation axis, a second rotation axis, a third rotation axis, and a fourth rotation axis. The four rotation axes intersect at a point located on the hinge height axis block.
[0004] The above solution allows the doors to open diagonally upwards, meaning they open outwards and upwards simultaneously, avoiding some of the problems associated with aftermarket scissor doors. However, this solution requires all four axes to intersect at a single point, demanding extremely high manufacturing and assembly precision. Otherwise, issues such as sluggish mechanism movement and jamming can easily occur, resulting in a high product defect rate. Furthermore, this four-axis-intersection-at-a-point technical solution imposes numerous limitations and constraints on the space available for the side panels of the vehicle, making design and layout more difficult and hindering system structure adjustments and rapid adaptation.
[0005] For example, Chinese patent CN202111589615.9, entitled "A Scissor Door Hinge and Vehicle", discloses a scissor door hinge structure that connects the hinge base, hinge arm, main connecting shaft block, and connecting components through six rotating shafts to realize the movement of the mechanism, achieving arc-shaped upward opening and arc-shaped downward closing.
[0006] However, this design requires that the first, second, and third rotation axes intersect at a single point, and the fourth, fifth, and sixth rotation axes intersect at a single point. This places extremely high demands on the precision of the manufacturing and assembly processes; otherwise, problems such as sluggish mechanism movement and jamming can easily occur, resulting in a high product defect rate. Furthermore, the six axes intersecting at two points impose numerous restrictions and constraints on the space allocated to the side of the vehicle body, making the design and layout more difficult and hindering adjustments and rapid adaptation of the system structure. Summary of the Invention
[0007] This application provides a scissor door hinge and a vehicle to solve the problem that in related technologies, the door hinge structure requires extremely high manufacturing and assembly precision, and the mechanism is prone to problems such as uneven movement and jamming, resulting in a high product defect rate.
[0008] The first aspect of this application provides a scissor door hinge, comprising:
[0009] A hinge base, wherein a first bearing seat and a second bearing seat are provided on the hinge base;
[0010] A hinge arm, the hinge arm including an outer hinge arm and an inner hinge arm for connecting to a vehicle door;
[0011] A spatial link, the spatial link comprising a first link rotatably connected between a first bearing and an inner hinge arm, and a second link rotatably connected between a second bearing and an outer hinge arm;
[0012] The hinge base, hinge arm, and spatial link together form a Bennett mechanism that enables the hinge arm to move along a set spatial trajectory.
[0013] In some embodiments: one end of the first connecting rod is rotatably connected to the first bearing via a first pin and forms a first rotation axis;
[0014] The other end of the first connecting rod is rotatably connected to the inner arm of the hinge via a second pivot pin, forming a second axis of rotation.
[0015] One end of the second connecting rod is rotatably connected to the second bearing via a third pivot pin, forming a third axis of rotation;
[0016] The other end of the second link is rotatably connected to the hinge arm via the fourth pivot pin, forming the fourth axis of rotation.
[0017] In some embodiments: the line connecting the first bearing seat and the second bearing seat is perpendicular to the first rotation axis and the third rotation axis;
[0018] The line connecting the outer hinge arm and the inner hinge arm is perpendicular to the second rotation axis and the fourth rotation axis;
[0019] The line connecting the two ends of the first connecting rod is perpendicular to the first rotation axis and the second rotation axis;
[0020] The line connecting the two ends of the second link is perpendicular to the third and fourth rotation axes.
[0021] In some embodiments: the length of the line connecting the first bearing and the second bearing is equal to the length of the line connecting the outer arm of the hinge and the inner arm of the hinge, and the length of the line is a;
[0022] The length of the line connecting the two ends of the first link is equal to the length of the line connecting the two ends of the second link, and the length of the line is b.
[0023] The spatial angle between the first and third rotation axes is equal to the spatial angle between the second and fourth rotation axes, and the spatial angle is A.
[0024] The spatial angle between the first and second rotation axes is equal to the spatial angle between the third and fourth rotation axes, and the spatial angle between them is B.
[0025] Furthermore, a / sinA = b / sinB.
[0026] In some embodiments: the length of the line connecting the first bearing and the second bearing, the length of the line connecting the outer arm of the hinge and the inner arm of the hinge, the length of the line connecting the two ends of the first connecting rod, and the length of the line connecting the two ends of the second connecting rod are all equal.
[0027] The spatial angles between the first and third rotation axes, the second and fourth rotation axes, the first and second rotation axes, and the third and fourth rotation axes are all equal.
[0028] In some embodiments, the first link and the second link have the same structure.
[0029] In some embodiments, the device further includes a drive member for driving the hinge arm to rotate along a set trajectory. The drive member includes a telescopic strut, the bottom of which is rotatably connected to the vehicle side bracket via a lower strut mounting pin, and the top of which is rotatably connected to the hinge arm via an upper strut mounting pin.
[0030] In some embodiments, a limiting component is also included, the limiting component including a limiting bracket located at the bottom of the hinge arm and fixedly connected to the vehicle side panel, the limiting bracket being provided with a buffer block and a limiting bracket mounting hole for fixing the limiting bracket to the vehicle side panel;
[0031] The hinge arm has a limiting screw at its bottom that abuts against the buffer block. The limiting screw is threadedly connected to the hinge arm and its length is adjustable.
[0032] In some embodiments: the hinge base is provided with a plurality of vehicle side panel mounting holes for fixing the hinge base to the vehicle side panel, and the hinge arm is provided with a plurality of vehicle door mounting holes for fixing the hinge arm to the vehicle door.
[0033] A second aspect of this application provides a vehicle, the vehicle including the scissor door hinge as described in any of the above embodiments, and a vehicle body side panel and a door connected to the scissor door hinge.
[0034] The beneficial effects of the technical solution provided in this application include:
[0035] This application provides a scissor door hinge and a vehicle. The scissor door hinge of this application is provided with a hinge base, on which a first axle seat and a second axle seat are provided; a hinge arm, which includes an outer hinge arm and an inner hinge arm for connecting the vehicle door; and a spatial link, which includes a first link rotatably connected between the first axle seat and the inner hinge arm, and a second link rotatably connected between the second axle seat and the outer hinge arm; the hinge base, the hinge arm, and the spatial link together constitute a Bennett mechanism that causes the hinge arm to move along a predetermined spatial trajectory.
[0036] Therefore, the scissor door hinge of this application adopts a Bennett mechanism composed of a hinge base, a hinge arm, and a spatial link, which enables the hinge arm to move along a set spatial trajectory. This Bennett mechanism has a unique and definite degree of freedom of movement, which simplifies the movement of the door in the XYZ directions when the door is opened or closed into the coordinated rotation of four pins. This realizes the function of opening the door obliquely upward along the curve and closing the door obliquely downward. The movement process is continuous, smooth, stable, and reliable.
[0037] Furthermore, the scissor door hinge in this embodiment uses a spatial linkage to connect the hinge base and hinge arm, requiring only three components to form a spatial four-bar linkage mechanism. This results in a simpler structure, more flexible layout design, and faster and easier adjustments. Simultaneously, it is easy to install, has significantly lower requirements for manufacturing and assembly precision, greatly improves the product qualification rate, and can be applied to mass production. Attached Figure Description
[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0039] Figure 1 This is a schematic diagram of the scissor door hinge in the closed state according to an embodiment of this application;
[0040] Figure 2 This is a structural schematic diagram of the scissor door hinge in the unfolded state according to an embodiment of this application;
[0041] Figure 3 This is a schematic diagram of the hinge base according to an embodiment of this application;
[0042] Figure 4 This is a schematic diagram of the structure of the first link in an embodiment of this application;
[0043] Figure 5 This is a schematic diagram of the hinge arm according to an embodiment of this application;
[0044] Figure 6 This is a schematic diagram of the structure of the vehicle side panel bracket according to an embodiment of this application;
[0045] Figure 7 This is a schematic diagram of the structure of the limiting bracket according to an embodiment of this application;
[0046] Figure 8 This is a schematic diagram of the scissor door hinge installed on the side panel of the vehicle body in the closed state, according to an embodiment of this application.
[0047] Figure 9 This is a first-view structural diagram of the scissor door hinge in the unfolded state, which is installed on the side panel of the vehicle body according to an embodiment of this application.
[0048] Figure 10 This is a second-view structural diagram of the scissor door hinge in the unfolded state, which is installed on the side panel of the vehicle body according to an embodiment of this application.
[0049] Figure 11 This is a first-view structural diagram of the vehicle door unfolding according to an embodiment of this application.
[0050] Figure 12 This is a second-view structural diagram of the vehicle door unfolding according to an embodiment of this application.
[0051] Figure label:
[0052] 1. Hinge base; 2. Spatial linkage; 3. Hinge arm; 4. Telescopic strut; 5. Body side bracket; 6. Limiting bracket; 11. First axle seat; 12. Second axle seat; 13. Body side mounting hole; 21. First connecting rod; 22. Second connecting rod; 31. Hinge inner arm; 32. Hinge outer arm; 33. Upper strut mounting pin; 34. Limiting screw; 35. Door mounting hole; 51. Lower strut mounting pin; 52. Body side bracket mounting hole; 61. Buffer block; 62. Bolt; 63. Limiting bracket mounting hole; 100. Scissor door hinge; 200. Body side; 300. Door; 1A. First rotation axis; 2A. Second rotation axis; 1B. Third rotation axis; 2B. Fourth rotation axis. Detailed Implementation
[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0054] This application provides a scissor door hinge and a vehicle, which can solve the problems in related technologies where the door hinge structure requires extremely high manufacturing and assembly precision, and the mechanism is prone to problems such as uneven movement and jamming, resulting in a high product defect rate.
[0055] See Figures 1 to 5 As shown, a first aspect of this application provides a scissor door hinge, the scissor door hinge 100 comprising:
[0056] A hinge base 1 is used to mount the scissor door hinge 100 onto the vehicle side panel 200. The hinge base 1 includes a mounting plate, on which a first axle seat 11 and a second axle seat 12 are provided. Both the first axle seat 11 and the second axle seat 12 have pin holes. The first axle seat 11 and the second axle seat 12 are spaced apart along the X-axis direction on the mounting plate. In this application, the X-axis direction refers to the length direction of the vehicle, the Z-axis direction refers to the height direction of the vehicle, and the Y-axis direction refers to the width direction of the vehicle.
[0057] The hinge arm 3 is used to mount the scissor door hinge 100 onto the vehicle door 300. The hinge arm 3 includes an outer hinge arm 32 and an inner hinge arm 31 for connecting the vehicle door 300. The outer hinge arm 32 and the inner hinge arm 31 are spaced apart along the X-axis and are connected as a single unit by a connecting rib. A pivot pin hole is provided at the top of both the outer hinge arm 32 and the inner hinge arm 31.
[0058] A spatial link 2 is used to rotatably connect the hinge base 1 and the hinge arm 3. The spatial link 2 includes a first link 21 rotatably connected between the first bearing 11 and the inner hinge arm 31, and a second link 22 rotatably connected between the second bearing 12 and the outer hinge arm 32. The first link 21 and the second link 22 have the same structure and dimensions. Both ends of the first link 21 and the second link 22 have pin holes. The two ends of the first link 21 are rotatably connected to the first bearing 11 and the inner hinge arm 31 via pins, and the two ends of the second link 22 are rotatably connected to the second bearing 12 and the outer hinge arm 32 via pins.
[0059] The hinge base 1, hinge arm 3, and spatial link 2 together form a Bennett mechanism that enables the hinge arm 3 to move along a predetermined spatial trajectory. This Bennett mechanism formed by the scissor door hinge 100 has a unique degree of freedom in its spatial motion trajectory. When the scissor door hinge 100 unfolds or closes, it simplifies the movement of the door 300 in the XYZ directions into the coordinated rotation of four pivot pins, realizing the function of opening the door obliquely upward along a curve and closing the door obliquely downward. The movement process is continuous, smooth, stable, and reliable.
[0060] The scissor door hinge 100 of this application embodiment adopts a Bennett mechanism composed of a hinge base 1, a hinge arm 3, and a spatial link 2, which enables the hinge arm 3 to move along a set spatial trajectory. The Bennett mechanism has a unique and definite degree of freedom of movement, which simplifies the movement of the door 300 in the XYZ directions to the coordinated rotation of four pins when the door is opened or closed. This realizes the function of opening the door obliquely upward along the curve and closing the door obliquely downward. The movement process is continuous, smooth, stable and reliable.
[0061] Furthermore, in this embodiment of the scissor door hinge 100, the hinge base 1 and hinge arm 3 are connected by a spatial link 2, requiring only three components to form a spatial four-bar linkage mechanism. This results in a simpler structure, more flexible layout design, and faster and easier adjustments. Simultaneously, it is easy to install, has significantly lower requirements for manufacturing and assembly precision, greatly improves the product qualification rate, and can be applied to mass production.
[0062] In some alternative embodiments: see Figures 1 to 5 As shown, this application embodiment provides a scissor door hinge. One end of the first link 21 of the scissor door hinge 100 is rotatably connected to the first bearing 11 via a first pin, forming a first rotation axis 1A. The other end of the first link 21 is rotatably connected to the inner arm 31 of the hinge via a second pin, forming a second rotation axis 2A.
[0063] One end of the second link 22 is rotatably connected to the second bearing 12 via the third pin, forming the third rotation axis 1B; the other end of the second link 22 is rotatably connected to the hinge outer arm 32 via the fourth pin, forming the fourth rotation axis 2B.
[0064] The line connecting the first bearing 11 and the second bearing 12 is perpendicular to the first rotation axis 1A and the third rotation axis 1B. The line connecting the outer hinge arm 32 and the inner hinge arm 31 is perpendicular to the second rotation axis 2A and the fourth rotation axis 2B. The line connecting the two ends of the first connecting rod 21 is perpendicular to the first rotation axis 1A and the second rotation axis 2A. The line connecting the two ends of the second connecting rod 22 is perpendicular to the third rotation axis 1B and the fourth rotation axis 2B.
[0065] The length of the line connecting the first bearing 11 and the second bearing 12 is equal to the length of the line connecting the outer hinge arm 32 and the inner hinge arm 31, and the length of this line is 'a'. The length of the line connecting the two ends of the first link 21 is equal to the length of the line connecting the two ends of the second link 22, and the length of this line is 'b'. The spatial angle between the first rotation axis 1A and the third rotation axis 1B is equal to the spatial angle between the second rotation axis 2A and the fourth rotation axis 2B, and the spatial angle between the first rotation axis 1A and the third rotation axis 1B and the spatial angle between the second rotation axis 2A and the fourth rotation axis 2B is A.
[0066] The spatial angle between the first rotation axis 1A and the second rotation axis 2A is equal to the spatial angle between the third rotation axis 1B and the fourth rotation axis 2B, and the spatial angle between the first rotation axis 1A and the second rotation axis 2A and the third rotation axis 1B and the fourth rotation axis 2B is B; moreover, the straight-line distance a and the spatial angle A between the first rotation axis 1A and the second rotation axis 2A are sinusoidally related to the straight-line distance b and the spatial angle B between the third rotation axis 1B and the fourth rotation axis 2B, that is, a / sinA=b / sinB.
[0067] In some alternative embodiments: see Figures 1 to 5 As shown in the embodiment of this application, a scissor door hinge is provided. The line lengths connecting the first pivot 11 and the second pivot 12, the hinge outer arm 32 and the hinge inner arm 31, the line lengths connecting the two ends of the first connecting rod 21, and the line lengths connecting the two ends of the second connecting rod 22 are all equal. The spatial angles between the first rotation axis 1A and the third rotation axis 1B, the spatial angles between the second rotation axis 2A and the fourth rotation axis 2B, the spatial angles between the first rotation axis 1A and the second rotation axis 2A, and the spatial angles between the third rotation axis 1B and the fourth rotation axis 2B are all equal.
[0068] In some alternative embodiments: see Figures 1 to 10 As shown in the illustration, this application provides a scissor door hinge 100. The scissor door hinge 100 further includes a driving component that drives the hinge arm 3 to rotate along a predetermined trajectory. This driving component includes a telescopic strut 4, which is preferably, but not limited to, an electrically operated telescopic strut. The bottom of the telescopic strut 4 is rotatably connected to a vehicle side panel bracket 5 via a lower strut mounting pin 51. The vehicle side panel bracket 5 is fixed to the vehicle side panel 200 via a vehicle side panel bracket mounting hole 52. The top of the telescopic strut 4 is rotatably connected to the hinge arm 3 via an upper strut mounting pin 33.
[0069] It also includes a limiting assembly, which includes a limiting bracket 6 located at the bottom of the hinge arm 3 and fixedly connected to the vehicle side panel 200. The limiting bracket 6 is provided with a buffer block 61 and a limiting bracket mounting hole 63 for fixing the limiting bracket 6 to the side panel of the vehicle side panel 200. The buffer block 61 is fixed to the limiting bracket 6 by bolts 62. A limiting screw 34 is provided at the bottom of the hinge arm 3 to abut against the buffer block 61. The limiting screw 34 is threadedly connected to the hinge arm 3 and its length is adjustable to provide a limit when the hinge arm 3 closes the door 300.
[0070] The hinge base 1 has multiple body side panel mounting holes 13 for fixing the hinge base 1 to the body side panel 200. The hinge base 1 is detachably and fixedly connected to the body side panel 200 by bolts. The hinge arm 3 has multiple door mounting holes 35 for fixing the hinge arm 3 to the door 300. The hinge arm 3 is detachably and fixedly connected to the door 300 by bolts.
[0071] See Figure 11 and Figure 12 As shown, a second aspect of this application provides a vehicle including a scissor door hinge 100 as described in any of the above embodiments, and a vehicle body side panel 200 and a door 300 connected to the scissor door hinge 100. The scissor door hinge 100 is fixed to the vehicle body side panel 200 and drives the door 300 to open the door obliquely upward along a curve and close the door obliquely downward.
[0072] Working principle
[0073] This application provides a scissor door hinge and a vehicle. The scissor door hinge 100 of this application is provided with a hinge base 1, on which a first axle seat 11 and a second axle seat 12 are provided; a hinge arm 3, which includes an outer hinge arm 32 and an inner hinge arm 31 for connecting the door 300; and a spatial link 2, which includes a first link 21 rotatably connected between the first axle seat 11 and the inner hinge arm 31, and a second link 22 rotatably connected between the second axle seat 12 and the outer hinge arm 32. The hinge base 1, the hinge arm 3, and the spatial link 2 together form a Bennett mechanism that causes the hinge arm 3 to move along a set spatial trajectory.
[0074] Therefore, the scissor door hinge of this application adopts a Bennett mechanism composed of a hinge base 1, a hinge arm 3, and a spatial link 2, which enables the hinge arm 3 to move along a set spatial trajectory. The Bennett mechanism has a unique and definite degree of freedom of movement, which simplifies the movement of the door in the XYZ directions when the door is opened or closed into the coordinated rotation of four pins. This realizes the function of opening the door obliquely upward along the curve and closing the door obliquely downward. The movement process is continuous, smooth, stable and reliable.
[0075] Furthermore, in this embodiment of the scissor door hinge 100, the hinge base 1 and hinge arm 3 are connected by spatial linkages, requiring only three components to form a spatial four-bar linkage mechanism. This results in a simpler structure, more flexible layout design, and faster and easier adjustments. Simultaneously, it is easy to install, has significantly lower requirements for manufacturing and assembly precision, greatly improves the product qualification rate, and can be applied to mass production.
[0076] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0077] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0078] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. 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 this application. Therefore, this application 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 claimed herein.
Claims
1. A scissor door hinge, characterized in that, include: A hinge base (1) is provided with a first bearing seat (11) and a second bearing seat (12). The hinge arm (3) includes an outer hinge arm (32) and an inner hinge arm (31) for connecting the door (300). The spatial link (2) includes a first link (21) rotatably connected between a first bearing (11) and a hinge inner arm (31), and a second link (22) rotatably connected between a second bearing (12) and a hinge outer arm (32). The hinge base (1), hinge arm (3) and spatial link (2) together form a Bennett mechanism that enables the hinge arm (3) to move along a set spatial trajectory. The first link (21) and the second link (22) have the same structure; One end of the first connecting rod (21) is rotatably connected to the first bearing (11) through the first shaft pin and forms the first rotation axis (1A). The other end of the first connecting rod (21) is rotatably connected to the inner hinge arm (31) through the second shaft pin and forms the second rotation axis (2A). One end of the second connecting rod (22) is rotatably connected to the second bearing (12) through the third shaft pin and forms the third rotation axis (1B); The other end of the second link (22) is rotatably connected to the hinge arm (32) via the fourth shaft pin and forms the fourth rotation axis (2B); The length of the line connecting the first bearing (11) and the second bearing (12) is equal to the length of the line connecting the outer hinge arm (32) and the inner hinge arm (31), and the length of the line is a. The length of the line connecting the two ends of the first link (21) is equal to the length of the line connecting the two ends of the second link (22), and the length of the line is b. The spatial angle between the first rotation axis (1A) and the third rotation axis (1B) is equal to the spatial angle between the second rotation axis (2A) and the fourth rotation axis (2B), and the spatial angle is A. The spatial angle between the first rotation axis (1A) and the second rotation axis (2A) is equal to the spatial angle between the third rotation axis (1B) and the fourth rotation axis (2B), and the spatial angle between them is B. Furthermore, a / sinA = b / sinB.
2. A scissor door hinge as described in claim 1, characterized in that: The line connecting the first bearing seat (11) and the second bearing seat (12) is perpendicular to the first rotation axis (1A) and the third rotation axis (1B). The line connecting the outer hinge arm (32) and the inner hinge arm (31) is perpendicular to the second rotation axis (2A) and the fourth rotation axis (2B). The line connecting the two ends of the first connecting rod (21) is perpendicular to the first rotation axis (1A) and the second rotation axis (2A). The line connecting the two ends of the second link (22) is perpendicular to the third rotation axis (1B) and the fourth rotation axis (2B).
3. A scissor door hinge as described in claim 1, characterized in that: The length of the line connecting the first bearing (11) and the second bearing (12), the length of the line connecting the outer arm (32) and the inner arm (31) of the hinge, the length of the line connecting the two ends of the first connecting rod (21), and the length of the line connecting the two ends of the second connecting rod (22) are all equal. The spatial angles between the first rotation axis (1A) and the third rotation axis (1B), the spatial angles between the second rotation axis (2A) and the fourth rotation axis (2B), the spatial angles between the first rotation axis (1A) and the second rotation axis (2A), and the spatial angles between the third rotation axis (1B) and the fourth rotation axis (2B) are all equal.
4. A scissor door hinge as described in claim 1, characterized in that: It also includes a drive component that drives the hinge arm (3) to rotate along a set trajectory. The drive component includes a telescopic strut (4). The bottom of the telescopic strut (4) is rotatably connected to the vehicle side bracket (5) through a lower strut mounting pin (51), and the top of the telescopic strut (4) is rotatably connected to the hinge arm (3) through an upper strut mounting pin (33).
5. A scissor door hinge as described in claim 1, characterized in that: It also includes a limiting component, which includes a limiting bracket (6) located at the bottom of the hinge arm (3) and fixedly connected to the vehicle side panel (200). The limiting bracket (6) is provided with a buffer block (61) and a limiting bracket mounting hole (63) for fixing the limiting bracket (6) to the vehicle side panel (200). The hinge arm (3) has a limiting screw (34) at its bottom that abuts against the buffer block (61). The limiting screw (34) is threadedly connected to the hinge arm (3) and the length of the limiting screw (34) is adjustable.
6. A scissor door hinge as described in claim 1, characterized in that: The hinge base (1) has multiple body side mounting holes (13) for fixing the hinge base (1) to the body side panel (200), and the hinge arm (3) has multiple door mounting holes (35) for fixing the hinge arm (3) to the door (300).
7. A vehicle, characterized in that, The vehicle includes a scissor door hinge (100) as described in any one of claims 1 to 6, and a vehicle body side panel (200) and a door (300) connected to the scissor door hinge (100).