Butterfly door hinge and vehicle

Abstract

The present invention provides a butterfly door hinge and a vehicle, and particularly relates to the technical field of vehicles. The butterfly door hinge includes a mounting seat, a door connection arm, a hinge connection arm, and a limiting assembly, one end of the hinge connection arm is hinged to the mounting seat and the other end is hinged to the door connection arm, and the limiting assembly includes a planar limiting part provided on the mounting seat and a limiting body provided on the door connection arm, and the limiting body has a rotating outer contour. The present invention first uses the hinge connection arm to limit the door to swing around a fixed point, and then realizes the limiting of the door's posture by the abutting engagement between the limiting body and the planar limiting part, so that the door can be opened sideways while maintaining a specific posture during the upward opening process, and further allows the butterfly door car to share the locking and catching system with the normal flat-opening car, reducing the manufacturing cost, and the present invention has a simpler structure, fewer moving joints, and improves the smoothness of the door opening and closing process.

Description

[Technical field]

[0001] The present invention relates to the technical field of vehicles, and in particular to a butterfly door hinge and a vehicle. [Background technology]

[0002] Currently, most automobile doors are opened using rotating flat doors. However, in an environment where there is an increasingly high demand for individualized and fashionable door opening methods, there is a demand in the market for more individualized door opening methods. Therefore, in order to meet the needs of the market, it is necessary to develop individualized and fashionable door opening methods.

[0003] The butterfly door has a novel and fashionable opening method, which not only meets the needs of consumers for individualization, but also meets the needs of consumers for convenience in getting on and off with a small door opening width, and solves the needs of passengers for convenience in narrow parking spaces.

[0004] The traditional single-axis butterfly door opening method requires the lock catch of the lock body to be arranged in the tangential direction according to the rotation of the hinge, which cannot meet the needs of upgrading the butterfly door based on the sharing of the side outer panel. Therefore, it is necessary to design a hinge that can not only meet the requirement of sharing the lock catch position of the lock body with the rotating flat door, but also meet the requirement of opening the door upward.

[0005] Currently, there are few hinges on the market that use a similar opening method, and they have defects such as complex structure, high cost, complex assembly, low smoothness, and high failure rate, and do not meet the needs of generalization and mass production. Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a butterfly door hinge and a vehicle that improves the problems of the existing butterfly door hinge, such as complicated structure, high cost, complicated assembly, low smoothness, and high failure rate. [Means for solving the problem]

[0007] To achieve the above and other related objects, the butterfly door hinge of the present invention comprises: A mounting base and A door connecting arm; a hinge connection arm having one end hinged to the mounting seat and the other end hinged to the door connection arm, with extensions of the axes of two hinge connection shafts intersecting at one point; The door connecting arm includes a limiting assembly including a planar limiting portion provided on the mounting seat and a limiting body provided on the door connecting arm, the limiting body abutting the planar limiting portion, and abutment areas located on at least both sides of the intersection.

[0008] In one embodiment of the present invention, the area where the limiting body and the planar limiting portion abut has a rotational outer contour, and the intersection of the axes of the two hinge connection axes is located on the axis of the rotational outer contour.

[0009] In one embodiment of the present invention, the limiting body includes two abutment units arranged separately on both sides of the intersection, the rotary mold outer contour is present in at least the two abutment units, and the axes of the rotary mold outer contours of the two abutment units are on the same line.

[0010] In one embodiment of the present invention, the abutment unit is connected to the door connecting arm so as to be pivotable relative to the door connecting arm along the axis of the outer rotary mold profile, and is engaged with the flat surface limiting portion so as to be rollable.

[0011] In one embodiment of the present invention, the abutment unit is fixedly connected to the door connecting arm and slidably engages with the planar limiting portion.

[0012] In one embodiment of the present invention, a boss is provided on the mounting seat, and a top surface of the boss constitutes the flat surface limiting portion.

[0013] In one embodiment of the present invention, the limiting body further includes a pillar fixedly connected to the door connecting arm, and the abutment units are provided on both sides of the pillar.

[0014] In one embodiment of the present invention, the door connection arm includes a first connection arm, a second connection arm and a door connection part, one end of the first connection arm and the second connection arm are fixedly connected to the door connection part and the other end of the first connection arm and the second connection arm are fixedly connected to the pillar-shaped body, and the first connection arm, the second connection arm, the door connection part and the pillar-shaped body together enclose a hollow portion capable of accommodating the hinge connection arm.

[0015] In one embodiment of the present invention, a first hinge bracket is provided on the door connection arm, a tubular first hinge connection portion is provided at one end of the hinge connection arm, a first pin shaft is provided within the first hinge connection portion, and the first pin shaft is connected to the first hinge bracket.

[0016] In one embodiment of the present invention, a first hinge bracket is provided on the first connection arm, a tubular first hinge connection portion is provided at one end of the hinge connection arm, a first pin shaft is provided within the first hinge connection portion, and the first pin shaft is connected to the first hinge bracket.

[0017] In one embodiment of the present invention, a second hinge bracket is provided on the mounting seat, a tubular second hinge connection portion is provided at one end of the hinge connection arm away from the first hinge connection portion, a second pin shaft is provided within the second hinge connection portion, and the second pin shaft is connected to the second hinge bracket.

[0018] To achieve the above and other related objects, the present invention provides a vehicle comprising: The car body and Doors and a butterfly door hinge, the butterfly door hinge comprising: A mounting seat connected to the vehicle body; a door connecting arm connected to the door; a hinge connection arm having one end hinged to the mounting seat and the other end hinged to the door connection arm, with extensions of the axes of two hinge connection shafts intersecting at one point; a limiting assembly including a planar limiting portion provided on the mounting seat and a limiting body provided on the door connecting arm, the limiting body having a rotational outer contour, an intersection of the axes of the two hinge connecting shafts being located on the axis of the rotational outer contour, the rotational outer contour of the limiting body abutting the planar limiting portion, and abutment areas being located on at least both sides of the intersection. Effect of the Invention

[0019] In view of the above, the present invention first uses a hinge connecting arm to restrict the door from swinging around a fixed point, and then restricts the door posture by the abutting engagement between the restricting body and the flat restricting portion, so that the door can maintain a specific posture while opening sideways during the upward opening process. Furthermore, the butterfly door car can share the same locking and catching system as a normal flat-opening car, reducing manufacturing costs. Furthermore, compared with the butterfly door hinges and scissors door hinges in the prior art, the present invention has a simpler structure and fewer moving joints, reducing the failure rate and improving the smoothness of the door opening and closing process.

[0020] There is no substantial connection between the plane limiting portion and the limiting body of the present invention, and there is only abutting engagement between the two, which simplifies the hinge structure to the greatest extent and reduces the difficulty of assembly.

[0021] By forming a rolling engagement between the abutment unit of the present invention and the flat surface limiting portion, frictional resistance can be further reduced, and wear of the limiting body can be reduced, thereby improving the service life of the hinge.

[0022] The present invention provides a flat limiting portion on the boss, the thickness of which is significantly greater than the thickness of the mounting seat itself, thereby providing a reliable support for the limiting body.

[0023] The door connecting arm of the present invention adopts a hollow structure design, which makes the hinge structure more compact and reduces the lateral thickness of the hinge, thereby freeing up design space for other structures of the car body, under the premise of ensuring that the structural strength of the entire hinge meets the design requirements. [Brief description of the drawings]

[0024] In order to more clearly describe the technical means in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art are briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0025] [Figure 1] FIG. 1 is a schematic front view of an embodiment of a butterfly door hinge according to the present invention in a closed state. [Diagram 2] FIG. 1 is a schematic perspective view of an embodiment of a butterfly door hinge according to the present invention in a closed state. [Diagram 3] FIG. 2 is a schematic perspective view of an embodiment of a butterfly door hinge according to the present invention in a closed state from a different viewing angle. [Figure 4] FIG. 1 is a schematic front view of an embodiment of a butterfly door hinge according to the present invention in an open state. [Diagram 5] FIG. 2 is a schematic front view of an embodiment of a door connecting arm according to the present invention. [Figure 6] 1 is a schematic front view of a mounting seat according to an embodiment of the present invention; [Figure 7] 1 is a schematic front view of an embodiment of a hinge connection arm according to the present invention; [Figure 8] 1 is a schematic perspective view of an embodiment of a hinge connection arm according to the present invention; [Figure 9]FIG. 2 is a schematic perspective view of an embodiment of a hinge connection arm according to the present invention, seen from a different viewing angle. [Figure 10] 1 is a schematic side view of a door portion of a vehicle according to an embodiment of the present invention in a closed state; [Figure 11] 1 is a schematic side view of a door portion of a vehicle according to an embodiment of the present invention in an open state; [Figure 12] 1 is a schematic rear view of a door portion of a vehicle according to an embodiment of the present invention in an open state; [Figure 13] 1 is a schematic front view of a door portion of a vehicle according to an embodiment of the present invention in an open state; [Figure 14] 1 is a schematic perspective view of one embodiment of a restriction assembly according to the present invention; FIG. [Figure 15] 11 is a schematic perspective view of another embodiment of a restriction assembly according to the present invention; FIG. [Figure 16] 11 is a schematic perspective view of yet another embodiment of a restriction assembly according to the present invention; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the embodiments of the present invention will be described by specific specific examples, but those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention may be further implemented or applied by other different embodiments, and various modifications or changes may be made to each detail in this specification based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following examples and features in the examples may be combined with each other as long as they are not inconsistent. It should also be understood that the terms used in the examples of the present invention are intended to describe specific specific embodiments and are not intended to limit the scope of protection of the present invention. In the following examples, the test methods for which specific conditions are not specified are performed according to normal conditions or according to conditions proposed by each manufacturer.

[0027] As shown in Figures 1 to 16, the structures, ratios, sizes, etc. shown in the drawings of this specification are intended for those skilled in the art to understand and read in combination with the contents disclosed in the specification, and are not intended to limit the limiting conditions under which the present invention can be implemented, and therefore do not have any substantial technical meaning. Any modification of the structure, change in the ratio relationship, or adjustment of the size should be included within the scope of the technical content disclosed in this invention as long as it does not affect the effects and achievable purposes of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle", and "one" described in this specification are merely for convenience of explanation and do not limit the scope of the present invention, and any change or adjustment of the relative relationship is considered to be within the scope of the present invention without substantially changing the technical content.

[0028] When the examples show a range of values, it should be understood that the two end points of each range and any value between the two end points can be selected unless otherwise specified in the present invention. Unless otherwise defined, all technical and scientific terms used in the present invention and the understanding of the prior art by those skilled in the art and the description of the present invention can be used to realize the present invention using any method, device, and material of the prior art similar or equivalent to the method, device, and material described in the examples of the present invention.

[0029] As shown in FIGS. 1 to 4, the butterfly door hinge according to the present invention includes a mounting base 10, a door connecting arm 20, a hinge connecting arm 30, and a limiting assembly 40.

[0030] 10 to 13, the mounting seat 10 connects to the vehicle body 1, specifically, connects to the front side fender or the inner frame of the fender of the vehicle body 1. As can be understood, the mounting seat 10 is provided with a vehicle body connecting portion 11, and in the present invention, the connection between the vehicle body connecting portion 11 and the mounting seat 10 is not limited to a certain method, and for example, the vehicle body connecting portion 11 may be fixedly connected to the vehicle body 1 by a welding method, or for example, the vehicle body connecting portion 11 may be connected to the vehicle body 1 by a riveting method, or for example, the vehicle body connecting portion 11 may be connected to the vehicle body 1 by a bolt.

[0031] As shown in Fig. 1 to Fig. 4, one end of the hinge connection arm 30 is hinged to the mounting base 10, and the other end is hinged to the door connection arm 20, and the extension lines of the axes of the two hinge connection shafts intersect at one point. As can be understood, since the mounting base 10 and the vehicle body 1 are relatively fixed, the intersection point of the extension lines of the above two axes is also necessarily fixed with respect to the vehicle body 1, so that the hinge connection arm 30 can restrict the door 2 to swing around the intersection point. Based on the above understanding, before the restriction assembly 40 is introduced, the door 2 can have the following operations. The door 2 can swing up and down along a lateral axis, which is an axis that coincides with the width direction of the vehicle, and the coincidence does not mean absolute parallelism, but means that the lateral axis is disposed approximately along the width direction of the vehicle. Based on this, when the door 2 swings up, one end of the hinge connection arm 30 and the door connection arm 20 that are hinged to each other swings away from the mounting seat 10, and in this process, the door connection arm 20 is pushed to the side of the vehicle and separated, and further, the door connection arm 20 swings up and to the side at the same time. However, in this case, the door connection arm 20 has one more extra degree of freedom, that is, the door connection arm 20 can swing freely relative to the hinge connection arm 30, and thus the door 2 cannot generate a unique movement trajectory. For this reason, the present invention introduces a limiting assembly 40, which can limit the above-mentioned extra degree of freedom, so that the door 2 has a unique movement trajectory. The specific principle of the limiting assembly 40 will be described in detail later.

[0032] As shown in Figures 1 to 6, the limiting assembly 40 includes a flat surface limiting portion 41 provided on the mounting seat 10 and a limiting body provided on the door connecting arm 20, the limiting body has a rotation type outer contour, and the intersection of the axes of the two hinge connecting shafts is located on the axis of the rotation type outer contour, the rotation type outer contour of the limiting body abuts against the flat surface limiting portion 41, and the abutment areas are located at least on both sides of the intersection.

[0033] As can be understood, the planar limiting portion 41 according to the present invention does not necessarily mean that the limiting portion is a geometric absolute plane, and its definition should be understood from a functional point of view. As can be seen from the embodiments of the present invention, the main function of the planar limiting portion 41 is to limit the limiting body so that it can move only within one plane, and in order to keep the movement of the limiting body smooth, a guide structure having a concave-convex trajectory corresponding to the planar limiting portion 41 and the limiting body can be provided simultaneously, which does not go against the scope of protection of the present invention.

[0034] In the design concept of the present invention, in order to simplify the structure of the limiting assembly 40 as much as possible, there is no substantial connection between the planar limiting portion 41 and the limiting body, and there is only abutting engagement between the two. On this premise, the specific principle of the limiting assembly 40 of the present invention is as follows: First, the position of the above-mentioned intersection is absolutely fixed with respect to the vehicle body 1, and the intersection is located on the axis of the rotational outer contour of the limiting body, so that the limiting body can only rotate freely around the intersection. On this premise, the planar limiting portion 41 is used to firmly press both ends of the limiting body, thereby restricting the movement of the limiting body to a specific plane.

[0035] Meanwhile, as shown in FIG. 1 to FIG. 4, there exists a relative swing between the door connecting arm 20 and the plane limiting part 41, and since the limiting body is fixedly connected to the door connecting arm 20, the limiting body needs to rotate to a certain extent. In order to avoid the plane limiting part 41 restricting the rotation of the limiting body, the present invention provides a rotating mold outer contour corresponding to the limiting body, and the axis of the rotating mold outer contour passes through the intersection. As can be understood, the rotating mold outer contour is not limited to a cylindrical shape, for example, the rotating mold outer contour may be a deformed cylinder obtained by rotating a ball-shaped or other deformed cross section in a three-dimensional space. In addition, in order to ensure that the limiting body is restricted within a specific plane by the plane limiting part 41, the contact area between the rotating mold outer contour and the plane limiting part 41 needs to be distributed at least on both sides of the intersection. It should be noted that the contact area may be the entire contact area or two or more independent contact areas, which will be described in detail later by specific examples of the present invention.

[0036] 1 to 5, the limiting body includes two abutment units 42 arranged separately on both sides of the intersection, the rotary outer contour is present in at least the two abutment units 42, and the axes of the rotary outer contours of the two abutment units 42 are on the same line. As can be seen, by dividing the abutment area into two parts, this embodiment can reduce the sliding friction of the abutment area and further reduce the hinge resistance under the premise of ensuring the limiting effect.

[0037] As shown in FIG. 1-FIG. 5, in order to better implement the present invention, the abutment unit 42 is relatively rotatably connected to the door connecting arm 20 along the axis of the outer contour of the rotary mold, and is rollably engaged with the flat limiting portion 41. As can be understood, in this embodiment, the abutment unit 42 can be, for example, a roller, and by forming a rollable engagement between the abutment unit 42 and the flat limiting portion 41, the friction resistance can be further reduced, and the wear of the limiting body can be reduced, and the service life of the hinge can be improved. In a specific embodiment of the present invention, the abutment unit 42 can be, for example, a metal roller or a roller made of other polymeric wear-resistant materials, for example, a nylon roller, or for example, a rubber roller.

[0038] As shown in Figures 14, 15 and 16, the present invention further provides a number of types of restrictor structures, specifically as follows:

[0039] As shown in FIG. 14, the limiting body may be, for example, a cylindrical structure, and the entire outer peripheral surface of the cylindrical structure forms the abutment area, and as can be understood, the corresponding planar limiting portion 41 may be, for example, a disk-shaped structure, and of course, may be an annular structure, and when the planar limiting portion 41 is an annular structure, both ends of the limiting body need to be hung on the planar limiting portion 41, respectively.

[0040] As shown in FIG. 15, the abutment unit 42 is a two-ball head structure, the abutment unit 42 is fixedly connected to the door connecting arm 20, and the abutment unit 42 slidably engages with the plane limiting part 41. To further explain with reference to the drawings, the abutment unit 42 is fixed to both ends of a columnar body 43. As can be seen, there is a point contact between the ball head and the plane limiting part 41, so that the friction resistance between the abutment unit 42 and the plane limiting part 41 can be reduced to the maximum. As can be expected, in order to improve the smoothness of the opening and closing process of the door 2, the plane limiting part 41 may be provided, for example, in an annular groove or an arc-shaped groove that matches the moving trajectory of the ball head, but it should be emphasized that the arc-shaped groove does not have an excessive limiting effect on the ball head, and the ball head essentially has no substantial connection relationship with the plane limiting part 41, which is in accordance with the overall design concept of the present invention.

[0041] As shown in FIG. 15, in this embodiment, it can be understood that, on the one hand, the pillar-shaped body 43 is for facilitating the fixed connection of the ball head, and on the other hand, the pillar-shaped body 43 can make the two abutment units 42 as far apart from each other as possible, and increase the moment arm between the abutment unit 42 and the intersection point, thus effectively reducing the load acting between the abutment unit 42 and the plane limiting portion 41 in the process of opening and closing the door 2, improving the smoothness of the hinge, and further reducing the friction force.

[0042] As shown in Fig. 16, in this embodiment, the outer profile of the rotary mold is a semi-integral structure, and as can be understood, in the process of opening and closing the door 2, its swing formation is limited, so the rotation angle corresponding to the limiting part is also limited, and based on this, it is only necessary to ensure that the outer profile of the rotary mold can be in close contact with the flat limiting part 41 within the range of the rotation angle. Therefore, in the present invention, the outer profile of the rotary mold is not necessarily a rotary mold outer profile with a rotation angle of 360°, but in fact, it is only necessary to satisfy the swing stroke of the door 2, and it may be, for example, a 120° outer profile, or, for example, a 180° outer profile.

[0043] 1 to 4 and 6, a boss is provided on the mounting seat 10, and the top surface of the boss constitutes the flat surface limiting portion 41. As can be seen, the thickness of the boss is obviously larger than the thickness of the mounting seat 10 itself, and can provide reliable support for the limiting body, and in a specific embodiment, the boss may be integrally formed with the mounting seat 10, or may be formed by processing independently, and the boss and the mounting seat 10 are fixedly connected by means such as bolts, rivets or welding, and all of these means are within the scope of protection of the present invention.

[0044] As shown in Figures 1 to 4, based on the same understanding, since the opening angle of the door 2 is limited, the limiting body can only swing within a certain angle range, so the boss does not need to be provided in a full circle or full ring structure, for example, the boss may be two mutually symmetrical arc structures, which can reduce material consumption and improve economic benefits, and of course, in the actual manufacturing process, the manufacturing cost needs to be considered as a whole in combination with the molding process.

[0045] 5, in this embodiment, the door connecting arm 20 includes a first connecting arm 21, a second connecting arm 22 and a door connecting part 23, one end of the first connecting arm 21 and the second connecting arm 22 is fixedly connected to the door connecting part 23 and the other end of the first connecting arm 21 and the second connecting arm 22 is fixedly connected to the pillar 43, and the first connecting arm 21, the second connecting arm 22, the door connecting part 23 and the pillar 43 together surround a hollow portion capable of accommodating the hinge connecting arm 30. As can be seen, by using this structural design of the present invention, under the premise of ensuring that the structural strength of the entire hinge meets the design requirements, the hinge structure can be made more compact and the lateral thickness of the hinge can be reduced, so as to free up design space for other structures of the car body 1.

[0046] As shown in FIG. 5 and FIG. 7 to FIG. 9, the first connecting arm 21 is provided with a first hinge bracket 24, a tubular first hinge connection part 31 is provided at one end of the hinge connecting arm 30, a first pin shaft is provided in the first hinge connection part 31, and the first pin shaft is connected to the first hinge bracket 24. As can be understood, the first hinge bracket 24 may be, for example, integrally formed with the first connecting arm 21, or may be processed and formed separately, and fixedly connected to the first connecting arm 21 by means of bolts, caulking, welding, or the like. As can be expected, the first hinge connection part 31 may be, for example, integrally formed with the hinge connecting arm 30, or may be processed and formed separately, and fixedly connected to the hinge connecting arm 30. All of the above specific embodiments fall within the protection scope of the present invention.

[0047] As shown in Figs. 6 to 9, a second hinge bracket 12 is provided on the mounting seat 10, a tubular second hinge connection part 32 is provided on one end of the hinge connection arm 30 remote from the first hinge connection part 31, a second pin shaft is provided in the second hinge connection part 32, and the second pin shaft is connected to the second hinge bracket 12. As can be understood, the second hinge bracket 12 may be, for example, integrally formed with the mounting seat 10, or may be processed and formed separately, and is fixedly connected to the mounting seat 10 by means of bolts, rivets, welding, or the like. As can be expected, the second hinge connection part 32 may be, for example, integrally formed with the hinge connection arm 30, or may be processed and formed separately, and is fixedly connected to the hinge connection arm 30. All of the above specific embodiments fall within the scope of protection of the present invention.

[0048] As shown in Figs. 10 to 13, the present embodiment provides a vehicle including a vehicle body 1, a door 2, and a butterfly door hinge based on the above-mentioned butterfly door hinge.

[0049] As shown in Fig. 10 to Fig. 13, specifically, the butterfly door hinge includes a mounting seat 10, a door connecting arm 20, a hinge connecting arm 30, and a limiting assembly 40, and the mounting seat 10 is connected to the vehicle body 1, specifically, to connect the front side fender of the vehicle body 1 or the inner frame of the fender. As can be understood, the mounting seat 10 is provided with a vehicle body connecting part 11, and in the present invention, the connection between the vehicle body connecting part 11 and the mounting seat 10 is not limited to a certain manner, for example, the vehicle body connecting part 11 may be fixedly connected to the vehicle body 1 by a welding manner, and also, for example, the vehicle body connecting part 11 may be connected to the vehicle body 1 by a riveting manner, and further, for example, the vehicle body connecting part 11 may be connected to the vehicle body 1 by a bolt.

[0050] As shown in Fig. 10 to Fig. 13, the door connection arm 20 is connected to the door 2, the hinge connection arm 30 has one end hinged to the mounting base 10 and the other end hinged to the door connection arm 20, and the extension lines of the axes of the two hinge connection shafts intersect at one point. As can be understood, since the mounting base 10 and the vehicle body 1 are relatively fixed, the intersection point of the above two axes is also necessarily fixed with respect to the vehicle body 1, so that the hinge connection arm 30 can restrict the door 2 to swing around the intersection point. Based on the above understanding, before the limiting assembly 40 is introduced, the door 2 can have the following operations. The door 2 can swing up and down along a lateral axis, which is an axis that coincides with the width direction of the vehicle, and the coincidence does not mean absolute parallelism, but means that the lateral axis is disposed approximately along the width direction of the vehicle. Based on this, when the door 2 swings up, one end of the hinge connection arm 30 and the door connection arm 20 that are hinged to each other swings away from the mounting seat 10, and in this process, the door connection arm 20 is pushed toward the side of the vehicle and separated, and further, the door connection arm 20 swings upward and to the side at the same time. However, in this case, the door connection arm 20 has one more extra degree of freedom, that is, the door connection arm 20 can swing freely relative to the hinge connection arm 30, and thus the door 2 cannot generate a unique movement trajectory. For this reason, the present invention introduces a limiting assembly 40, which can limit the above-mentioned extra degree of freedom, so that the door 2 has a unique movement trajectory.

[0051] As shown in Fig. 10 to Fig. 13, specifically, the limiting assembly 40 includes a plane limiting part 41 provided on the mounting seat 10 and a limiting body provided on the door connecting arm 20, the limiting body has a rotation type outer contour, and the intersection of the axes of the two hinge connecting shafts is located on the axis of the rotation type outer contour, the rotation type outer contour of the limiting body abuts against the plane limiting part 41, and the abutting area is located at least on both sides of the intersection. As can be understood, the plane limiting part 41 according to the present invention does not necessarily mean that the limiting part is a geometric absolute plane, and its definition should be understood from a functional point of view, and as can be seen from the embodiment of the present invention, the main function of the plane limiting part 41 is to limit the limiting body to move only within one plane, and in order to smoothly maintain the movement of the limiting body, a guide structure having a concave-convex trajectory corresponding to the plane limiting part 41 and the limiting body can be provided at the same time, which does not go against the protection scope of the present invention. In the design concept of the present invention, in order to simplify the structure of the limiting assembly 40 as much as possible, there is no substantial connection between the planar limiting portion 41 and the limiting body, and there is only abutting engagement between the two. On this premise, the specific principle of the limiting assembly 40 of the present invention is as follows: First, the position of the above-mentioned intersection is absolutely fixed with respect to the vehicle body 1, and the intersection is located on the axis of the rotational outer contour of the limiting body, so that the limiting body can only rotate freely around the intersection. On this premise, the planar limiting portion 41 is used to firmly press both ends of the limiting body, thereby restricting the movement of the limiting body to a specific plane.

[0052] From the above, the present invention first uses the hinge connecting arm 30 to restrict the door 2 to swing around a fixed point, and then restricts the posture of the door 2 through the abutment engagement between the restricting body and the flat restricting part 41, so that the door 2 can maintain a specific posture and open sideways during the upward opening process, and furthermore, the butterfly door passenger car can share the same locking and catching system with the normal flat opening passenger car, reducing the manufacturing cost, and compared with the butterfly door hinge and the scissor door hinge in the prior art, the present invention has a simpler structure, fewer moving joints, reduces the failure rate, and improves the smoothness of the opening and closing process of the door 2. Therefore, the present invention effectively solves some practical problems in the prior art, and has high utility value and significance.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Those skilled in the art may modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be included in the scope of the claims of the present invention. [Explanation of symbols]

[0054] 1. Vehicle body 2 Door 10 Mounting seat 11 Vehicle body connection part 12 Second hinge bracket 20 Door connecting arm 21 First connecting arm 22 Second connecting arm 23 Door connection 24 First hinge bracket 30 Hinge connection arm 31 First hinge connection part 32 Second hinge connection part 40 Restricted Assembly 41 Plane Limit Section 42 Contact unit 43 Columnar body

Claims

1. A mounting base and A door connecting arm; a hinge connection arm having one end hinged to the mounting seat and the other end hinged to the door connection arm, with extensions of the axes of two hinge connection shafts intersecting at one point; A limiting assembly including a plane limiting portion provided on the mounting seat and a limiting body provided on the door connecting arm, the limiting body abutting the plane limiting portion, and abutment areas are located at least on both sides of the intersection. A butterfly door hinge characterized by:

2. The region where the limiting body and the flat surface limiting portion abut has a rotational outer contour, and the intersection of the axes of the two hinge connection shafts is located on the axis of the rotational outer contour.

2. The butterfly door hinge according to claim 1 .

3. The limiting body includes two abutment units arranged separately on both sides of the intersection, the outer contour of the rotary mold is present in at least the two abutment units, and the axes of the outer contours of the rotary mold of the two abutment units are on the same line.

3. The butterfly door hinge according to claim 2.

4. The abutment unit is connected to the door connecting arm along the axis of the rotary mold outer profile so as to be relatively rotatable, and is engaged with the flat surface limiting portion so as to be rollable.

4. The butterfly door hinge according to claim 3.

5. The abutment unit is fixedly connected to the door connecting arm and slidably engaged with the flat surface limiting portion.

4. The butterfly door hinge according to claim 3.

6. A boss is provided on the mounting seat, and a top surface of the boss constitutes the flat surface limiting portion. A butterfly door hinge according to any one of claims 1 to 5.

7. The limiting body further includes a pillar fixedly connected to the door connecting arm, and the abutment unit is provided on both sides of the pillar. A butterfly door hinge according to any one of claims 3, 4 and 5.

8. the door connection arm includes a first connection arm, a second connection arm, and a door connection portion, one end of the first connection arm and the second connection arm are fixedly connected to the door connection portion and the other end of the first connection arm and the second connection arm are fixedly connected to the columnar body, and the first connection arm, the second connection arm, the door connection portion, and the columnar body together surround a hollow portion capable of accommodating the hinge connection arm; 8. The butterfly door hinge according to claim 7.

9. A first hinge bracket is provided on the door connection arm, a tubular first hinge connection portion is provided at one end of the hinge connection arm, a first pin shaft is provided within the first hinge connection portion, and the first pin shaft is connected to the first hinge bracket. A butterfly door hinge according to any one of claims 1 to 5.

10. A first hinge bracket is provided on the first connection arm, a tubular first hinge connection portion is provided at one end of the hinge connection arm, a first pin shaft is provided within the first hinge connection portion, and the first pin shaft is connected to the first hinge bracket.

9. The butterfly door hinge according to claim 8.

11. a second hinge bracket is provided on the mounting seat, a tubular second hinge connection portion is provided at one end of the hinge connection arm, a second pin shaft is provided within the second hinge connection portion, and the second pin shaft is connected to the second hinge bracket; A butterfly door hinge according to any one of claims 1 to 5.

12. The car body and Doors and a butterfly door hinge, the butterfly door hinge comprising: A mounting seat connected to the vehicle body; a door connecting arm connected to the door; a hinge connection arm having one end hinged to the mounting seat and the other end hinged to the door connection arm, with extensions of the axes of two hinge connection shafts intersecting at one point; a limiting assembly including a plane limiting portion provided on the mounting seat and a limiting body provided on the door connecting arm, the limiting body having a rotational outer contour, an intersection of the axes of the two hinge connecting shafts being located on the axis of the rotational outer contour, the rotational outer contour of the limiting body abutting against the plane limiting portion, and abutting regions being located at least on both sides of the intersection; A vehicle characterized by:

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