Vehicle door hinge mechanism and vehicle

Abstract

The present application discloses a vehicle door hinge mechanism and a vehicle. The vehicle door hinge mechanism is used for connecting a vehicle body and a vehicle door of the vehicle, and comprises a vehicle door seat, a vehicle body seat, a connecting arm, and a pin shaft; the vehicle door seat is fixedly arranged on the vehicle door; the vehicle body seat is fixedly arranged on the vehicle body; the connecting arm has a first end and a second end, wherein the first end is rotatably connected to the vehicle door seat, and the second end is rotatably connected to the vehicle body seat; the pin shaft is movably mounted on the vehicle body seat and has a locking position and an unlocking position; the vehicle body seat and the second end are relatively fixed at the locking position; and the vehicle body seat and the second end can relatively rotate at the unlocking position.

Description

Door hinge mechanism and vehicle

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202420366155.6 filed on February 27, 2024, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to, but is not limited to, the field of vehicle technology, and in particular to a door hinge mechanism and a vehicle. Background Art

[0004] The door hinge mechanism, as the connecting part between the vehicle door and the body, plays a key role in the door opening and closing movement, thus affecting people's comfort in using the vehicle.

[0005] At present, car door hinges mainly use a single-axis hinge mechanism to achieve single-axis linear movement of the car door, so that the maximum opening angle of the car door is basically around 70°, resulting in a limited full opening angle of the car door, which easily affects after-sales maintenance and passengers getting on and off the car. In addition, the car door has a single opening method and cannot achieve diversified opening of the door. Summary of the Invention

[0006] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0007] The main purpose of this application is to provide a vehicle door hinge mechanism, which aims to increase the opening angle of the vehicle door.

[0008] To achieve the above-mentioned objectives, the present application proposes a door hinge mechanism for connecting a vehicle body and a door, the door hinge mechanism comprising:

[0009] A door seat, fixedly mounted on the door;

[0010] A vehicle body seat, fixedly mounted on the vehicle body;

[0011] a connecting arm having a first end and a second end, wherein the first end is rotatably connected to the door seat and the second end is rotatably connected to the vehicle body seat; and

[0012] The pin shaft is movably mounted on the vehicle body seat and has a locking position and an unlocking position. In the locking position, the vehicle body seat and the second end are relatively fixed. In the unlocking position, the vehicle body seat and the second end can rotate relative to each other.

[0013] In one embodiment, a latch hole is formed on the connecting arm. In the locked position, the pin shaft is inserted into the latch hole. In the unlocked position, the pin shaft is disengaged from the latch hole.

[0014] In one embodiment, the vehicle body seat includes a main body and a limit stopper, wherein the main body is rotatably connected to the second end, and the limit stopper is connected to the main body and has a through hole for the pin to pass through;

[0015] In the locked position, the through hole and the latch hole are aligned, and in the unlocked position, the through hole and the latch hole are staggered.

[0016] In one embodiment, a support is fixed on the limit stop portion, and the support is movably connected to the pin shaft.

[0017] In one embodiment, a return spring is connected between the support and the pin;

[0018] And / or, the pin shaft includes an operating part and a locking part, one end of the operating part is connected to the locking part, and the other end passes through the support, and the locking part is used to be inserted into the pin hole.

[0019] In one embodiment, the connecting arm is provided with a guide surface, and when the pin shaft switches from the unlocking position to the locking position, the guide surface is used to guide the pin shaft to insert into the pin hole.

[0020] In one embodiment, the connecting arm is provided with a first limiting convex bump, and the first limiting convex bump is used to restrict the opening of the vehicle body seat relative to the second end when the vehicle door is closed;

[0021] And / or, the connecting arm is provided with a second limiting convex bump, and the second limiting convex bump is used to constrain the opening of the door seat relative to the first end when the door is opened;

[0022] And / or, the connecting arm is arranged to be bent as a whole.

[0023] In one embodiment, a self-limiting structure is provided between the second end and the vehicle body seat, for limiting the relative movement between the connecting arm and the vehicle body seat.

[0024] In one embodiment, the self-limiting structure includes a first limiting component, which includes a matching limiting pin and a limiting groove, the limiting pin is provided at one of the vehicle body seat and the second end, and the limiting groove is provided at the other of the vehicle body seat and the second end.

[0025] In one embodiment, a plurality of the limiting grooves are provided and are spaced apart at the second end.

[0026] In one embodiment, the self-limiting structure further includes a second limiting component, which is elastically connected to the vehicle body seat and supported at the second end.

[0027] In one embodiment, the second limiting assembly includes a limiting plate and a force applying member. One side of the limiting plate is supported on the second end, and the other side is connected to the force applying member, and the force applying member is connected to the vehicle body seat.

[0028] In one embodiment, when the vehicle door is opened, the connecting arm successively has a first motion state in which the first end and the vehicle door seat rotate relative to each other and the second end and the vehicle body seat remain stationary relative to each other, and a second motion state in which the first end and the vehicle door seat remain stationary relative to each other and the second end and the vehicle body seat rotate relative to each other;

[0029] In the first movement state, the pin is located at the locked position, and in the second movement state, the pin is located at the unlocked position.

[0030] The present application also provides a vehicle, which includes the door hinge mechanism described above.

[0031] In the technical solution of the present application, a dual-axis design is adopted by rotatably connecting the first end to the door seat and rotatably connecting the second end to the vehicle body seat to meet the requirements of the door's rotational opening in two dimensions, thereby achieving a large-angle opening of the door. This effectively avoids the restrictions on getting on and off the vehicle for larger people and limited after-sales maintenance space due to the limited door opening, improves the convenience of getting on and off the vehicle and maintenance, and enriches the diversity of door opening methods.

[0032] Combined with the movable setting of the pin shaft on the vehicle body seat, by switching the pin shaft between the locked position and the unlocked position, the uniqueness of the door opening path is guaranteed while meeting the different opening requirements of passengers, reducing the risk of cross-overlap when the door is rotated in two dimensions, and improving the opening stability of the door.

[0033] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0035] FIG1 is a schematic structural diagram of an embodiment of a vehicle door hinge mechanism according to the present application from a first perspective;

[0036] Figure 2 is a cross-sectional view of point A in Figure 1;

[0037] FIG3 is a cross-sectional view of point B in FIG1 ;

[0038] FIG4 is a schematic structural diagram of the door hinge mechanism in FIG1 from a second perspective;

[0039] FIG5 is a schematic structural diagram of the door hinge mechanism in FIG1 from a third perspective;

[0040] FIG6 is a schematic structural diagram of the connecting arm and the pin in FIG5 ;

[0041] FIG7 is an exploded schematic diagram of the door hinge mechanism in FIG5 ;

[0042] FIG8 is a top view of the door hinge mechanism, when the door is in a closed state;

[0043] FIG9 is a top view of the door hinge mechanism, at this time, the connecting arm is in the first motion state;

[0044] FIG10 is a cross-sectional view of point C in FIG9 ;

[0045] FIG11 is a top view of the door hinge mechanism, at which time the connecting arm is in the second motion state.

[0046] Description of Figure Numbers:

[0047] Reference numerals Reference numerals 10 door seat 40 pin shaft 11 limiting portion 41 operating portion 20 vehicle body seat 42 locking portion 21 main body 50 support 22 limiting stop portion 60 return spring 23 through hole 70 fastening bolt 30 connecting arm 80 first limiting assembly 31 first end 81 limiting pin 32 second end 82 limiting groove 33 pin hole 90 second limiting assembly 34 guide surface 91 limiting plate 35 first limiting protrusion 92 force applying member 36 second limiting protrusion

[0048] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0049] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes Solution A, or Solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0053] The present application provides a vehicle door hinge mechanism for connecting a vehicle body and a vehicle door.

[0054] 1 to 11 , in the embodiment of the present application, the door hinge mechanism includes a door seat 10 , a vehicle body seat 20 , a connecting arm 30 and a pin 40 ; the door seat 10 is fixed to the vehicle door; the vehicle body seat 20 is fixed to the vehicle body; the connecting arm 30 has a first end 31 and a second end 32 , the first end 31 is rotatably connected to the door seat 10 , and the second end 32 is rotatably connected to the vehicle body seat 20 ; the pin 40 is movably mounted on the vehicle body seat 20 and has a locked position and an unlocked position. In the locked position, the vehicle body seat 20 and the second end 32 are relatively fixed, and in the unlocked position, the vehicle body seat 20 and the second end 32 are relatively rotatable. In this way, a dual-axis design is adopted to meet the rotational opening of the door in two dimensions, which can increase the full opening angle, thereby facilitating the increase of passenger boarding space and after-sales maintenance space, and enriching the diversity of door opening methods.

[0055] The first end 31 is rotatably connected to the door seat 10, and the second end 32 is rotatably connected to the vehicle body seat 20, so that the door hinge mechanism has two rotation points, which can meet the needs of rotating and opening the door in two dimensions, realizing a large angle of opening of the door, and avoiding the restrictions on getting on and off the vehicle for people with larger bodies and limited after-sales maintenance space due to the limited opening of the door, thereby improving the convenience of getting on and off the vehicle and maintenance.

[0056] The door seat 10 is rotatably connected to the first end 31 of the connecting arm 30 through the door shaft, and the vehicle body seat 20 is rotatably connected to the second end 32 of the connecting arm 30 through the vehicle body shaft, and the pin shaft 40 is movably set on the vehicle body seat 20. When the pin shaft 40 is in the locked position, the vehicle body seat 20 and the second end 32 can be fixed into a whole by the pin shaft 40, limiting the relative movement between the vehicle body seat 20 and the second end 32. When the vehicle door is actuated, the door hinge mechanism can only complete the rotational movement of the door seat 10 relative to the first end 31, completing the small angle of the door. When the door seat 10 rotates a certain angle relative to the first end 31, the pin 40 can unlock the lock between the vehicle body seat 20 and the second end 32 and is in the unlocked position. When the door is actuated, the second end 32 of the connecting arm 30 is driven by the door seat 10 to rotate relative to the vehicle body seat 20 to complete the full-angle opening of the door, thereby meeting the different opening requirements of passengers. At the same time, the uniqueness of the door opening path is guaranteed, the risk of cross-overlapping of the door's rotational opening in two dimensions is reduced, and the opening stability of the door is improved.

[0057] The pin 40 can be switched between the locked and unlocked positions manually or electrically, depending on the position of the door hinge mechanism. The door hinge mechanism is a cast component, facilitating its molding while ensuring the door's downward movement rigidity and strength. Furthermore, the precision injection molding process ensures a smooth surface finish.

[0058] In the technical solution of the present application, the first end 31 is rotatably connected to the door seat 10, and the second end 32 is rotatably connected to the vehicle body seat 20. A dual-axis design is adopted to meet the requirements of the door's rotational opening in two dimensions, thereby achieving a large-angle opening of the door. This effectively avoids the restrictions on getting on and off the vehicle for larger people and limited after-sales maintenance space due to the limited door opening, improves the convenience of getting on and off the vehicle and maintenance, and enriches the diversity of door opening methods.

[0059] In conjunction with the movable setting of the pin shaft 40 on the vehicle body seat 20, by switching the pin shaft 40 between the locked position and the unlocked position, while meeting the different opening requirements of passengers, the uniqueness of the door opening path is guaranteed, the risk of cross-overlapping of the door's rotational opening in two dimensions is reduced, and the opening stability of the door is improved.

[0060] 10 and 11 , in one embodiment, the connecting arm 30 is provided with a latch hole 33. In the locked position, the pin 40 is inserted into the latch hole 33, and in the unlocked position, the pin 40 is released from the latch hole 33. Consequently, during rotation of the door base 10 relative to the first end 31, the pin 40 remains inserted into the latch hole 33, thereby ensuring relative fixation between the connecting arm 30 and the vehicle body base 20 and reducing the interference of the rotational movement of the connecting arm 30 relative to the second end 32 on the stability of the door opening and closing at small angles. The latch hole 33 can be directly provided on the connecting arm 30. In this case, the connecting arm 30 body can be integrally curved to ensure that the latch hole 33 can be plugged into and engaged with the pin 40 on the vehicle body base 20. Alternatively, the latch hole 33 can be provided in a solid portion extending from the connecting arm 30, located along the rotational path of the connecting arm 30 and extending toward the vehicle body base 20, to ensure plugged engagement between the latch hole 33 and the pin 40. The pin hole 33 can be a blind hole or a through hole.

[0061] 9 to 10, in one embodiment, the vehicle body seat 20 includes a main body 21 and a limit stop 22, the main body 21 is rotatably connected to the second end 32, the limit stop 22 is connected to the main body 21, and is provided with a through hole 23 for the pin 40 to pass through; in the locked position, the through hole 23 is aligned with the latch hole 33, and in the unlocked position, the through hole 23 is staggered with the latch hole 33. It can be understood that the pin 40 is movably connected to the limit stop 22. At this time, The limit stop portion 22 is provided with a through hole 23 for the pin shaft 40 to pass through. Furthermore, through the relative position between the through hole 23 and the latch hole 33, when the through hole 23 is aligned with the latch hole 33, the pin shaft 40 can pass through the through hole 23 and be inserted into the latch hole 33, thereby completing the relative fixation of the vehicle body seat 20 and the connecting arm 30; when the through hole 23 and the latch hole 33 are staggered with each other, the pin shaft 40 passes through the through hole 23 and is stopped by the edge of the latch hole 33, and the pin shaft 40 cannot be inserted into the latch hole 33, thereby ensuring the rotational movement of the connecting arm 30 relative to the vehicle body seat 20.

[0062] The second end 32 is connected to the main body 21 through the vehicle body axis rotation, and the limit stop part 22 is connected to the main body 21 and extends toward the connecting arm 30 to ensure that the through hole 23 on the limit stop part 22 can cooperate with the pin hole 33 on the connecting arm 30; the main body 21 and the limit stop part are an integrated structure and can be manufactured by one-piece molding, welding and other processes.

[0063] Specifically, in one embodiment, a support 50 is fixed on the limit stop 22, and the support 50 is movably connected to the pin 40. The support 50 is fixed to the side of the limit stop 22 away from the connecting arm 30 by a fastener such as a fastening bolt 70 to avoid interference between the pin 40 and the connecting arm 30. The support 50 is provided with a limit hole corresponding to the through hole 23, and the pin 40 is movably inserted into the limit hole and can be raised and lowered along the axis of the limit hole, thereby realizing the movable connection between the pin 40 and the vehicle body seat 20 and the plug-in fit with the pin hole 33.

[0064] 10 , in one embodiment, a return spring 60 is connected between the support 50 and the pin 40. When the pin 40 switches from the unlocked position to the locked position, the return spring 60 can assist the movement of the pin 40 into the pin hole 33, thereby ensuring the smooth reset of the pin 40. At the same time, when the pin 40 switches from the locked position to the unlocked position, the return spring 60 can buffer the collision force between the pin 40 and the support 50, thereby extending the service life of the support 50 and the pin 40.

[0065] Specifically, in one embodiment, the pin shaft 40 includes an operating part 41 and a locking part 42, one end of the operating part 41 is connected to the locking part 42, and the other end passes through the support 50, and the locking part 42 is used to insert into the pin hole 33. It can be understood that the part of the operating part 41 extending out of the support 50 can facilitate manual operation of the switching of the position of the pin shaft 40. The operating part 41 and the locking part 42 can be fixed into an integrated structure by means of threaded connection, mortise and tenon, etc., and form a limited position installation step, which facilitates the connection of one end of the reset spring 60 to the limited position installation step and the other end to the support 50, thereby ensuring the reset operation of the pin shaft 40 and the connection between the pin shaft 40 and the support 50.

[0066] The overall dimensions of the operating portion 41 are smaller than those of the locking portion 42. This ensures effective contact between the locking portion 42 and the wall of the latch hole 33, improving the rigidity of the locking portion 42 and the reliability of locking the vehicle body seat 20 and the connecting arm 30. Furthermore, it ensures manual operation while reducing the space occupied by the pin 40. The operating portion 41 also includes a head section and a connecting section. The head section is larger than the connecting section, ensuring that the pin 40 can be released from the retaining hole and the support 50. This also facilitates the formation of the retaining step and the assembly of the return spring 60.

[0067] 5 and 8 to 10 , in one embodiment, the connecting arm 30 is provided with a guide surface 34 . During the process of the pin shaft 40 switching from the unlocked position to the locked position, the guide surface 34 is used to guide the pin shaft 40 to be inserted into the pin hole 33 . The guide surface 34 can be configured as an inclined arc surface, which can smoothly guide the movement of the pin shaft 40 on the connecting arm 30 and insert it into the pin hole 33 .

[0068] Furthermore, in one embodiment, the connecting arm 30 is provided with a first limiting convex bump 35, and the first limiting convex bump 35 is used to constrain the opening of the vehicle body seat 20 relative to the second end 32 when the vehicle door is closed. It can be understood that when the vehicle door is closed, the connecting arm 30 rotates close to the vehicle body seat 20, thereby causing the pin shaft 40 extending out of the limiting stop portion 22 to abut against the guide surface 34. The continued rotation of the connecting arm 30 cooperates with the guiding effect of the guide surface 34 to guide the pin shaft 40 to the pin hole 33, completing the insertion action. During this process, the first limiting convex bump 35 is located on the path of the vehicle body seat 20 close to the connecting arm 30, and is located on the side of the pin hole 33 away from the guide surface 34. In this way, through the mutual abutment between the limiting stop portion 22 and the first limiting convex bump 35, the connecting arm 30 can be limited from continuing to rotate due to inertia, reducing the risk of extrusion and wear between the pin shaft 40 inserted into the pin hole 33 and the edge of the pin hole 33, thereby extending the service life. It can also ensure the alignment accuracy of the through hole 23 and the pin hole 33, and improve the plug-in efficiency of the pin shaft 40 and the connecting arm 30.

[0069] Referring to FIG7 , in one embodiment, the connecting arm 30 is provided with a second limiting bump 36 , which is used to constrain the opening of the door seat 10 relative to the first end 31 when the door is opened. It is understood that the door seat 10 is provided with a limiting portion 11 that cooperates with the second limiting bump 36 . When the door seat 10 rotates a certain angle relative to the first end 31, the limiting portion 11 abuts the second limiting bump 36 . When the door is further opened, the abutment between the limiting portion 11 and the second limiting bump 36 keeps the door seat 10 and the connecting arm 30 relatively stationary, preventing the relative rotation between the connecting arm 30 and the vehicle body seat 20 . This ensures a unique door opening path, reduces the risk of overlap when the door is opened in two dimensions, and improves the door's opening stability. The free ends of the second limiting bump 36 and the first limiting bump 35 extend in opposite directions, effectively utilizing the space on the side of the connecting arm 30. The limiting portion 11 is a limiting protrusion protruding from the door seat 10 .

[0070] In one embodiment, the connecting arm 30 is bent as a whole. In this way, while meeting the requirements of a large-angle opening, when the door is closed, the overall structure of the door hinge mechanism is compact and small in size, which helps to reduce the space occupied by assembling the door hinge mechanism and reduce the gap between the body and the door.

[0071] 1 to 3 , in one embodiment, a self-limiting structure is provided between the second end 32 and the vehicle body seat 20 for limiting the relative movement between the connecting arm 30 and the vehicle body seat 20 . This arrangement can ensure reliable hovering and smooth opening of the door when it is opened at a large angle, thereby improving safety when getting on and off the vehicle and improving the feel when opening and closing the door.

[0072] 2 , in one embodiment, the self-limiting structure includes a first limiting assembly 80, which includes a matching limiting pin 81 and a limiting groove 82. The limiting pin 81 is provided at one of the vehicle body seat 20 and the second end 32, and the limiting groove 82 is provided at the other of the vehicle body seat 20 and the second end 32. By plugging and fitting the limiting pin 81 and the limiting groove 82, the relative movement between the connecting arm 30 and the vehicle body seat 20 is limited, so that the vehicle door can be stably suspended to a specific opening, and the self-movement relative to the vehicle body due to factors such as the vehicle door's own weight and the parking position is prevented.

[0073] As shown in Figures 1 and 7, in one embodiment, multiple limiting grooves 82 are provided, spaced apart at the second end 32. Each limiting groove 82 corresponds to a specific opening. Based on the required opening, a limiting groove 82 is selected to engage with the limiting pin 81, ensuring the door is securely suspended at that opening. Specifically, due to the coordination and specific structure of the connecting arm 30 and the vehicle body seat 20, the limiting groove 82 is provided on the second end 32, the limiting pin 81 is connected to the vehicle body seat 20, and the position of the limiting pin 81 on the vehicle body seat 20 is adjustable, thereby changing the depth of the limiting pin 81 inserted into the limiting groove 82, thereby changing the required force between the limiting pin 81 and the limiting groove 82. In other embodiments, the limiting groove 82 is provided on the vehicle body seat 20.

[0074] As shown in Figures 3 and 6, in one embodiment, the self-limiting structure further includes a second limiting component 90, which is elastically connected to the vehicle body seat 20 and supported on the second end 32. Therefore, during the process of the second end 32 rotating relative to the vehicle body seat 20, the elastic connection between the second limiting component 90 and the vehicle body seat 20 can ensure the smoothness and stability of the rotation of the second end 32 relative to the vehicle body seat 20. At the same time, a certain holding force can be provided to the second end 32 to achieve door hovering at any opening.

[0075] Specifically, in one embodiment, the second limiting assembly 90 includes a limiting plate 91 and a force member 92. The limiting plate 91 is supported on the second end 32 on one side and is connected to the force member 92 on the other side. The force member 92 is connected to the vehicle body seat 20. The force member 92 is elastically connected to the vehicle body seat 20. The supporting force on the limiting plate 91 and the number of force members 92 can be changed by adjusting the elastic force provided, thereby changing the hovering ability of the vehicle door. Under the action of the force member 92, the limiting plate 91 can generate friction with the abutting second end 32, thereby completing the constraint of the second limiting assembly 90 on the rotational movement of the connecting arm 30.

[0076] In addition, an avoidance groove for avoiding the limit pin 81 is provided on the limit plate 91, which helps to reduce the impact of the limit plate 91 on the limit pin 81. There are multiple force-applying members 92 arranged in an array, and a limit pin 81 is set between two adjacent force-applying members 92, so as to make full use of the installation gap between the two adjacent force-applying members 92. At the same time, the holding force provided by the second limit component 90 and the plug-in cooperation between the limit groove 82 and the limit pin 81 further improve the hovering ability of the car door.

[0077] In one embodiment, when the vehicle door is opened, the connecting arm 30 successively has a first motion state in which the first end 31 rotates relative to the vehicle door seat 10 and the second end 32 is stationary relative to the vehicle body seat 20, and a second motion state in which the first end 31 is stationary relative to the vehicle door seat 10 and the second end 32 rotates relative to the vehicle body seat 20; in the first motion state, the pin shaft 40 is located in the locked position, and in the second motion state, the pin shaft 40 is located in the unlocked position.

[0078] Specifically, a dual-axis design is adopted to realize the door's rotational opening in two dimensions, and the uniqueness of the door's opening and closing paths is realized by switching the pin shaft 40 between the locked position and the unlocked position. Furthermore, during the door opening process, when the door is actuated, the pin shaft 40 is connected in series with the vehicle body seat 20 and the connecting arm 30, and the vehicle body seat 20 and the connecting arm 30 are relatively stationary. At this time, the pin shaft 40 is in the locked position, and the door action can only make the connecting arm 30 have a first motion state in which the first end 31 rotates relative to the door seat 10, thereby realizing the door's small-angle opening; when the door seat 10 rotates a certain angle relative to the first end 31, the second limiting convex bump 36 and the limiting portion of the door seat 10 are released. 11 abuts, when the door action continues, due to the mutual abutment between the limiting portion 11 and the second limiting convex bump 36, the door seat 10 and the connecting arm 30 are relatively stationary, and cannot affect the relative rotation between the connecting arm 30 and the vehicle body seat 20. The pin shaft 40 is switched from the locked position to the unlocked position manually or electrically. Since the rotation restriction between the connecting arm 30 and the vehicle body seat 20 is eliminated, the door action can enable the connecting arm 30 to have a second motion state in which the second end 32 rotates relative to the vehicle body seat 20, thereby realizing a large-angle opening of the door, and utilizing the cooperation between the first limiting assembly 80 and the second limiting assembly 90 and the second end 32 to realize reliable hovering when the door is opened at a large angle.

[0079] During the process of closing the vehicle door, the connecting arm 30 successively has a second motion state and a first motion state. During the process of switching from the second motion state to the first motion state, the pin shaft 40 is reliably switched from the unlocked position to the locked position through the guiding cooperation between the guide surface 34 and the pin shaft 40, and the stopping cooperation between the limit stop portion 22 and the first limit convex bump 35, thereby achieving reliable closing of the vehicle door.

[0080] The present application also proposes a vehicle, which includes a door hinge mechanism. The specific structure of the door hinge mechanism refers to the above-mentioned embodiments. Since the present vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0081] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A door hinge mechanism for connecting a vehicle body and a vehicle door, wherein: The door hinge mechanism comprises: A door seat, fixedly mounted on the door; A vehicle body seat, fixedly mounted on the vehicle body; a connecting arm having a first end and a second end, wherein the first end is rotatably connected to the door seat and the second end is rotatably connected to the vehicle body seat; and The pin shaft is movably mounted on the vehicle body seat and has a locking position and an unlocking position. In the locking position, the vehicle body seat and the second end are relatively fixed. In the unlocking position, the vehicle body seat and the second end can rotate relative to each other.

2. The door hinge mechanism according to claim 1, wherein: A latch hole is provided on the connecting arm. In the locked position, the pin shaft is inserted into the latch hole. In the unlocked position, the pin shaft is disengaged from the latch hole.

3. The door hinge mechanism according to claim 2, wherein: The vehicle body seat includes a main body and a limit stopper, wherein the main body is rotatably connected to the second end, and the limit stopper is connected to the main body and has a through hole for the pin to pass through; In the locked position, the through hole and the latch hole are aligned, and in the unlocked position, the through hole and the latch hole are staggered.

4. The door hinge mechanism according to claim 3, wherein: A support is fixed on the position-limiting stop portion, and the support is movably connected to the pin shaft.

5. The vehicle door hinge mechanism according to claim 4, wherein: The support is fixed on the side of the limit stop away from the connecting arm; the support is provided with a corresponding through hole, the through hole is provided with a limit hole, the pin shaft is movably passed through the limit hole, and can be lifted and lowered along the axis of the limit hole.

6. The vehicle door hinge mechanism according to claim 4, wherein: A return spring is connected between the support and the pin shaft; And / or, the pin shaft includes an operating part and a locking part, one end of the operating part is connected to the locking part, and the other end passes through the support, and the locking part is configured to be inserted into the pin hole.

7. The vehicle door hinge mechanism according to claim 6, wherein: The overall size of the operating portion is smaller than the overall size of the locking portion; the operating portion further comprises a head section and a connecting section, and the size of the head section is larger than the size of the connecting section.

8. The vehicle door hinge mechanism according to claim 2, wherein: The connecting arm is provided with a guide surface, and when the pin shaft switches from the unlocking position to the locking position, the guide surface is configured to guide the pin shaft to insert into the pin hole.

9. The vehicle door hinge mechanism according to claim 8, wherein: The guide surface is configured as an inclined arc surface.

10. The vehicle door hinge mechanism according to claim 1, wherein: The connecting arm is provided with a first limiting convex bump, and the first limiting convex bump is used to restrict the opening of the vehicle body seat relative to the second end when the vehicle door is closed; And / or, the connecting arm is provided with a second limiting convex bump, and the second limiting convex bump is used to constrain the opening of the door seat relative to the first end when the door is opened; And / or, the connecting arm is arranged to be bent as a whole.

11. The vehicle door hinge mechanism according to claim 1, wherein: A self-limiting structure is provided between the second end and the vehicle body seat, and is configured to limit the relative movement between the connecting arm and the vehicle body seat.

12. The vehicle door hinge mechanism according to claim 11, wherein: The self-limiting structure includes a first limiting component, which includes a matching limiting pin and a limiting groove. The limiting pin is provided at one of the vehicle body seat and the second end, and the limiting groove is provided at the other of the vehicle body seat and the second end.

13. The vehicle door hinge mechanism according to claim 12, wherein: There are a plurality of limiting grooves, which are spaced apart at the second end.

14. The vehicle door hinge mechanism according to claim 11, wherein: The self-limiting structure further includes a second limiting component, which is elastically connected to the vehicle body seat and supported at the second end.

15. The vehicle door hinge mechanism according to claim 14, wherein: The second limiting assembly includes a limiting plate and a force applying member. One side of the limiting plate is supported on the second end, and the other side is connected to the force applying member, and the force applying member is connected to the vehicle body seat.

16. The vehicle door hinge mechanism according to claim 15, wherein: The limiting plate is provided with an avoidance groove for avoiding the limiting pin, and the plurality of force-applying members are arranged in an array, and the limiting pin is provided between two adjacent force-applying members.

17. The vehicle door hinge mechanism according to claim 1, wherein: When the vehicle door is opened, the connecting arm successively has a first motion state in which the first end and the vehicle door seat rotate relative to each other and the second end and the vehicle body seat remain relatively stationary, and a second motion state in which the first end and the vehicle door seat remain relatively stationary and the second end and the vehicle body seat rotate relative to each other; In the first movement state, the pin is located at the locked position, and in the second movement state, the pin is located at the unlocked position.

18. A vehicle, wherein The vehicle door hinge mechanism comprises the vehicle door hinge mechanism according to any one of claims 1 to 17.

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