Column-B-free disordered oppositely-opened door hinge structure
By using a four-bar linkage structure and a limit spring design, the traditional limitations on the opening sequence of car doors and the applicability of sliding doors to different car models have been solved. This allows for unrestricted opening without a B-pillar, making it suitable for various car models and improving user convenience and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-04-10
AI Technical Summary
Existing door opening mechanisms have restrictions on the order in which they can be opened, making the operation cumbersome for users, especially when carrying items or picking up elderly people or children. Furthermore, sliding door solutions are only suitable for MPV models and cannot meet the styling requirements of SUVs and sedans.
It adopts a four-link structure, including a door mounting plate, upper link, lower link, connecting plate and body mounting plate, combined with limit springs and pins, to realize independent and disordered opening and closing of the front and rear doors. It breaks the traditional sequential restrictions through a purely mechanical structure and adapts to a variety of body shapes.
It enables independent and unordered opening of the front and rear doors, improving user convenience and flexibility, adapting to various vehicle models, with high structural stability, low failure rate, no need for complex electronic control components, good compatibility, and significantly improved user experience.
Smart Images
Figure CN121827641A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a B-pillar-free opposite-opening door hinge structure, in particular to a B-pillar-free opposite-opening door hinge structure without sequence. BACKGROUND
[0002] Figure 1 For the B-pillar-free opposite-opening door structure without sequence, Figure 1 In the structure, the lock body of the front door is engaged with the lock catch installed at the corresponding position of the original B-pillar of the rear door, and the reliable locking of the door is realized through the precise engagement of the lock body and the lock catch. However, due to the limitation of the locking structure and the opening logic, the opening of the door must follow a fixed sequence, that is, one of the doors must be opened first to release the locking constraint, and then the other door can be opened smoothly. This forced opening sequence requires additional waiting or adjustment of the door opening steps when getting on or off the vehicle, especially in scenarios such as carrying goods, picking up old people and children, etc. The operation is complicated and lacks flexibility, greatly affecting the convenience of use, and the user experience is poor. Figure 2 For the B-pillar-free sliding door structure, the serial number 6 represents the B-pillar split-seam sealing strip, 2 represents the rear door assembly, 3 represents the front door assembly, and 5 represents the rear door front-side door hole sealing strip. The rear door realizes sliding opening towards the rear and outside of the vehicle with the help of three mutually cooperating sliding rails. Although this structure can realize the function of opening without sequence, it is limited by the sliding rail arrangement space, sliding stroke, and the adaptability of the vehicle body side shape. Its application scenarios are only limited to MPV models. For SUV, SEDAN, and other vehicle body side profile models with more compact space layout, the sliding rail installation space is insufficient and the sliding movement is easy to interfere with other parts of the vehicle body, which cannot meet the modeling design requirements of diversified models, has poor modeling matching, and has limited application range. SUMMARY
[0003] The purpose of the present application is to overcome the shortcomings of the prior art and provide a B-pillar-free opposite-opening door hinge structure without sequence.
[0004] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:
[0005] The application discloses a B-pillar-free and disordered split door hinge structure, which comprises a door mounting plate, an upper connecting rod, a lower connecting rod, a connecting plate, a vehicle body mounting plate, a protruding end and a spring.
[0006] Preferably, the door mounting plate, the upper connecting rod, the lower connecting rod and the connecting plate form a four-connecting-rod structure.
[0007] Preferably, the lower connecting rod is in an arc shape.
[0008] Preferably, one end of the lower connecting rod is provided with a limiting end which is in contact limiting cooperation with the door mounting plate.
[0009] Preferably, the application further comprises a first pin shaft, a second pin shaft, a third pin shaft, a fourth pin shaft and a fifth pin shaft, one end of the door mounting plate is rotatably connected with one end of the upper connecting rod through the first pin shaft, the other end of the door mounting plate is rotatably connected with one end of the lower connecting rod through the second pin shaft, the other end of the upper connecting rod is rotatably connected with one end of the connecting plate through the third pin shaft, the other end of the connecting plate is rotatably connected with the vehicle body mounting plate through the fourth pin shaft, and the other end of the lower connecting rod is rotatably connected with the bottom end of the connecting plate through the fifth pin shaft.
[0010] Preferably, the door mounting plate is provided with a mounting hole, and the door mounting plate is mounted on the door through the mounting hole.
[0011] Preferably, the vehicle body mounting plate is provided with a mounting hole, and the vehicle body mounting plate is mounted on the side wall through the mounting hole.
[0012] Preferably, the door mounting plate is in a Z shape.
[0013] Preferably, the bottom of the connecting plate is provided with an independent connecting end which is rotatably connected with the other end of the lower connecting rod.
[0014] Preferably, the vehicle body mounting plate is in an L shape.
[0015] The application has the following beneficial effects:
[0016] The present application breaks the sequence restriction of the existing orderly opening structure by the four-bar linkage, limit spring and contact type limit pure mechanical structure design, and the front and rear doors can be independently and disorderly opened and closed without waiting for the unlocking or avoidance of the other door. Whether it is single person getting on and off the vehicle, carrying luggage, picking up the old and children, or multiple people entering and exiting at the same time, the operation is flexible and efficient, the problem of "inconvenient getting on and off the vehicle" of the traditional structure is completely solved, the user experience is significantly improved, no complex electric control elements are needed, the structure stability is high, the failure rate is low, and the movement trajectory of the door can be accurately controlled. During the opening / closing process, there is no movement interference between the door and the side wall of the vehicle body, and between the front and rear doors.
[0017] The present application breaks the sequence restriction of the existing orderly opening structure by the four-bar linkage, limit spring and contact type limit pure mechanical structure design, and the front and rear doors can be independently and disorderly opened and closed without waiting for the unlocking or avoidance of the other door. Whether it is single person getting on and off the vehicle, carrying luggage, picking up the old and children, or multiple people entering and exiting at the same time, the operation is flexible and efficient, the problem of "inconvenient getting on and off the vehicle" of the traditional structure is completely solved, the user experience is significantly improved, no complex electric control elements are needed, the structure stability is high, the failure rate is low, and the movement trajectory of the door can be accurately controlled. During the opening / closing process, there is no movement interference between the door and the side wall of the vehicle body, and between the front and rear doors.
[0018] The present application breaks the sequence restriction of the existing orderly opening structure by the four-bar linkage, limit spring and contact type limit pure mechanical structure design, and the front and rear doors can be independently and disorderly opened and closed without waiting for the unlocking or avoidance of the other door. Whether it is single person getting on and off the vehicle, carrying luggage, picking up the old and children, or multiple people entering and exiting at the same time, the operation is flexible and efficient, the problem of "inconvenient getting on and off the vehicle" of the traditional structure is completely solved, the user experience is significantly improved, no complex electric control elements are needed, the structure stability is high, the failure rate is low, and the movement trajectory of the door can be accurately controlled. During the opening / closing process, there is no movement interference between the door and the side wall of the vehicle body, and between the front and rear doors.
[0019] The present application breaks the sequence restriction of the existing orderly opening structure by the four-bar linkage, limit spring and contact type limit pure mechanical structure design, and the front and rear doors can be independently and disorderly opened and closed without waiting for the unlocking or avoidance of the other door. Whether it is single person getting on and off the vehicle, carrying luggage, picking up the old and children, or multiple people entering and exiting at the same time, the operation is flexible and efficient, the problem of "inconvenient getting on and off the vehicle" of the traditional structure is completely solved, the user experience is significantly improved, no complex electric control elements are needed, the structure stability is high, the failure rate is low, and the movement trajectory of the door can be accurately controlled. During the opening / closing process, there is no movement interference between the door and the side wall of the vehicle body, and between the front and rear doors. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a split B-pillar orderly opening structure diagram;
[0021] Figure 2 It is a B-pillarless split door sliding door structure diagram;
[0022] Figure 3 It is a three-dimensional structure diagram of the present application;
[0023] Figure 4 It is an explosion structure diagram of the present application;
[0024] Figure 5 It is a door mounting plate internal structure diagram;
[0025] Figure 6 It is a structure diagram between the door mounting plate and the upper connecting rod;
[0026] Figure 7 It is a structure diagram of the door closing state;
[0027] Figure 8 It is a structure diagram of the door opening state 1;
[0028] Figure 9 Structure diagram of the spring limiting state;
[0029] Figure 10 Structure diagram of the door opening movement;
[0030] Figure 11 B-pillar sealing and movement diagram;
[0031] Figure 12 Limiting end and door mounting plate contact limiting cooperation diagram;
[0032] Figure 13 Structure diagram of the door opening state 2; DETAILED DESCRIPTION
[0033] The following detailed description of embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.
[0034] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. If the terms "horizontal", "vertical", "overhang", and the like appear, they do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the embodiments of the application, "a plurality of" represents at least two. In the description of the embodiments of the application, it should be noted that unless otherwise specified and limited, if the terms "provided", "mounted", "connected", "linked", appear, they should be understood broadly, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0035] The technical solutions of the application will be further described below in conjunction with the drawings of the specification:
[0036] As Figures 3 to 6As shown, a B-pillar-free random double-door hinge structure, comprising a door mounting plate 10, an upper connecting rod 20, a lower connecting rod 30, a connecting plate 40, a vehicle body mounting plate 50, a protruding end 111, a spring 110, the door mounting plate 10 is used for mounting on the door 130, the vehicle body mounting plate 50 is mounted on the side wall 120, one end of the door mounting plate 10 is rotatably connected with one end of the upper connecting rod 20, the other end of the door mounting plate 10 is rotatably connected with one end of the lower connecting rod 30, the other end of the upper connecting rod 20 is rotatably connected with one end of the connecting plate 40, the other end of the connecting plate 40 is also rotatably connected with the vehicle body mounting plate 50, the other end of the lower connecting rod 30 is rotatably connected with the bottom of the connecting plate 40, one end of the door mounting plate 10 is provided with a protruding part 102, the protruding part 102 is provided with a clamping groove 103, one end of the upper connecting rod 20 is provided with a groove 202, one end of the groove 202 is provided with a through hole 201, one end of the protruding end 111 is a free end, the other end of the protruding end 111 is fixedly connected with one end of the spring 110 after passing through the through hole 201, the other end of the spring 110 is fixedly connected with the other end of the groove 202, the clamping groove 103 cooperates with the protruding end 111, and the protruding end 111 has elasticity.
[0037] As shown in the figure, Figures 3 to 6 The door mounting plate 10, the upper connecting rod 20, the lower connecting rod 30 and the connecting plate 40 form a four-bar linkage structure, and the lower connecting rod 30 is arc-shaped.
[0038] As shown in the figure, Figure 3 , Figure 5 One end of the lower connecting rod 30 is provided with a limiting end 301, and the limiting end 301 is in contact with the door mounting plate 10. The bottom end of the door mounting plate 10 is located below the top end of the limiting end 301. When the door mounting plate 10 rotates clockwise, the door mounting plate 10 rotates to a position in contact with the lower connecting rod 30. Since the limiting end 301 blocks the door mounting plate 10, the door mounting plate 10 cannot continue to rotate clockwise at this time.
[0039] As shown in the figure, Figure 3 , Figure 4 Further comprising a first pin shaft 100, a second pin shaft 80, a third pin shaft 90, a fourth pin shaft 60 and a fifth pin shaft 70. One end of the door mounting plate 10 is rotatably connected with one end of the upper connecting rod 20 through the first pin shaft 100. The other end of the door mounting plate 10 is rotatably connected with one end of the lower connecting rod 30 through the second pin shaft 80. The other end of the upper connecting rod 20 is rotatably connected with one end of the connecting plate 40 through the third pin shaft 90. The other end of the connecting plate 40 is also rotatably connected with the vehicle body mounting plate 50 through the fourth pin shaft 60. The other end of the lower connecting rod 30 is rotatably connected with the bottom end of the connecting plate 40 through the fifth pin shaft 70.
[0040] AsFigure 3 , Figure 4 The door mounting plate 10 shown is provided with mounting holes 101, and the door mounting plate 10 is used to be mounted on the door 130 through the mounting holes 101. The body mounting plate 50 is provided with assembly holes 501, and the body mounting plate 50 is mounted on the side panel 120 through the assembly holes 501.
[0041] like Figure 3 , Figure 4 The door mounting plate 10 shown is Z-shaped. The bottom of the connecting plate 40 has an independent connecting end 401, which is rotatably connected to the other end of the lower connecting rod 30. The body mounting plate 50 is L-shaped.
[0042] The working principle is as follows:
[0043] Door opening process 1: Data when the door is closed (see...) Figure 7 When the door mounting plate 10 is rotated clockwise, the four-bar linkage structure, consisting of the door mounting plate 10, upper link 20, lower link 30, and connecting plate 40, drives the entire door to perform a four-bar translational motion. The direction of motion is a combination of the outward and rearward directions of the vehicle. The motion pattern at the hinge is shown in [details omitted]. Figure 10 Movement at the B-pillar seal is observed. Figure 11 The X-axis movement distance is slightly greater than the overlap of the original B-pillar positions of the front and rear doors when the doors are closed. The hinge state after the movement is as follows: Figure 10 As shown, pushed by the elastic force of the spring 110, the protruding end 111 is precisely inserted into the slot 103 of the protrusion 102 of the door mounting plate 10 (at this time, the spring 110 is in a compressed state), forming an elastic locking limit, effectively preventing the door from moving arbitrarily in the closing direction; at the same time, the door mounting plate 10 and the limiting end 301 of the lower connecting rod 30 form rigid contact (see...). Figure 12 When the door mounting plate 10 comes into contact with the limiting end 301, it is blocked by the limiting end 301 and cannot continue to rotate, thus restricting the door mounting plate 10 from continuing to rotate clockwise. This achieves bidirectional limiting of the four-bar linkage structure in the door opening direction, providing a stable reference for the subsequent overall rotational movement.
[0044] Car door opening process 2: The car door starts from open state 1 (see...) Figure 8 and Figure 10 If the door continues to open and the opening angle needs to be further increased, the external force applied to the door will overcome the elastic constraint of spring 110. The components of the four-link linkage temporarily form a rigid structure under the engaging action of the protruding end 111 and the slot 103. They then rotate synchronously around the pivot 60, causing the entire door to rotate outwards and open. This continues until the door reaches its maximum opening angle. The final state of the hinges is shown in the image. Figure 13 The car door is fully open at position 1302 (see...) Figure 10 At this point, the door opening width is maximized to meet the needs of convenient getting in and out of the vehicle.
[0045] Door closing process:
[0046] When the door starts to close from the fully open state 1302 (see Figure 10 ), it first makes a reverse rotation motion around the pin shaft 60, gradually resets to the intermediate position corresponding to the door opening state 1 (door state 1301, see Figure 10 ), at which time the connecting plate 40 stops moving and remains stationary under the limiting action of the protruding end inserted into the clamping groove 103. Continue to apply the door closing force, which drives the door mounting plate 10 to move in the opposite direction, causing the protruding end 111 to disengage from the clamping groove 103, and the spring 110 to simultaneously decompress and reset; then the four-bar linkage structure regains the ability to move independently, making a reverse translational motion in the combined direction of "inside the car + front of the car", i.e., continuing to close the door according to the four-bar linkage motion, driving the door to gradually approach the side wall 120 of the vehicle body, until the door is fully closed, and each component returns to the initial closed position, completing the entire closing process.
[0047] Figure 3 The hinge shown in the middle is a whole part, which is directly installed on the vehicle body and the door through two bolts. The installation process does not require more processes, and does not increase the installation difficulty. Subsequently, the electric version of this hinge is considered, which drives the upper link / lower link and connecting plate to move through the motor, and the ECU controls the rotation phase angle of the motor to realize the limiting and opening of the door, and the opening angle can be freely defined, which is more convenient for users to use.
[0048] The present application consists of five core components: a door mounting plate, an upper link, a lower link, a connecting plate, and a vehicle body mounting plate, forming a four-bar linkage mechanism, a flexible clamping structure composed of a protruding end and a spring, and a rigid contact limiting structure of the lower link limiting end, realizing the rotational connection of each component through multiple pin shafts; the door mounting plate is Z-shaped, the vehicle body mounting plate is L-shaped, the bottom of the connecting plate is provided with an independent connecting end, the overall structure is compact and easy to install, and is fixed to the door and the side wall of the vehicle body through the installation hole and the assembly hole respectively.
[0049] Realize B-pillar-free disorder opening and closing: break through the sequential limitation of traditional sequential opening, the front and rear doors can be operated independently without waiting for each other, greatly improving the convenience of getting on and off the vehicle;
[0050] Multi-vehicle model adaptation without limitation: get rid of the limitation that the sliding door solution is only applicable to MPVs, and is compatible with SUVs, cars, MPVs and other vehicle body styles, with wider adaptability;
[0051] Double limiting + two-stage motion: ensure motion stability through "flexible clamping limiting + rigid contact limiting", the door opening is divided into "four-bar linkage translation" and "overall rotation" two stages, and the closing is divided into "rotation reset + translation closing", with no motion interference throughout the process;
[0052] Pure mechanical structure is reliable: without complex electrical control elements, relying on mechanical transmission and elastic constraint to realize the function, low failure rate, and at the same time guarantee the sealing performance of the vehicle body.
[0053] The application not only solves the use pain points of the prior art, but also has the characteristics of simple installation, stable structure and strong expansibility, can be directly applied to various B-column-free double-door vehicle models, can also be expanded to other door types such as tailgates, and reserves space for electric upgrading, thereby providing a more flexible and practical technical solution for automobile door design, and having both innovation and industrialization value.
[0054] It should be noted that the above is only one specific embodiment of the present application. Obviously, the present application is not limited to the above embodiments, but can have many variations. In short, all variations that can be directly derived or inferred from the disclosed content by those skilled in the art should be considered as falling within the scope of the present application.
Claims
1. A B-pillar-free, disordered opposing door hinge structure, characterized in that, The system includes a door mounting plate (10), an upper connecting rod (20), a lower connecting rod (30), a connecting plate (40), a body mounting plate (50), a protruding end (111), and a spring (110). The door mounting plate (10) is used to install on the door (130), and the body mounting plate (50) is installed on the side panel (120). One end of the door mounting plate (10) is rotatably connected to one end of the upper connecting rod (20), and the other end of the door mounting plate (10) is rotatably connected to one end of the lower connecting rod (30). The other end of the upper connecting rod (20) is rotatably connected to one end of the connecting plate (40), and the other end of the connecting plate (40) is also rotatably connected to the body mounting plate (50). The lower connecting rod (30) is rotatably connected to the upper connecting rod (20), the lower connecting rod (30), ... The other end of the door mounting plate (10) is rotatably connected to the bottom of the connecting plate (40). One end of the door mounting plate (10) is provided with a protrusion (102), and the protrusion (102) is provided with a slot (103). One end of the upper connecting rod (20) is provided with a groove (202), and one end of the groove (202) is provided with a through hole (201). One end of the protruding end (111) is a free end. The other end of the protruding end (111) passes through the through hole (201) and is fixedly connected to one end of the spring (110). The other end of the spring (110) is fixedly connected to the other end of the groove (202). The slot (103) cooperates with the protruding end (111), and the protruding end (111) is elastic.
2. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The door mounting plate (10), upper link (20), lower link (30), and connecting plate (40) form a four-bar linkage structure.
3. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The lower connecting rod (30) is arc-shaped.
4. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, One end of the lower connecting rod (30) is provided with a limiting end (301), which is in contact with the door mounting plate (10) for limiting.
5. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, It also includes a first pin (100), a second pin (80), a third pin (90), a fifth pin (70), and a fourth pin (60). One end of the door mounting plate (10) is rotatably connected to one end of the upper connecting rod (20) via the first pin (100). The other end of the door mounting plate (10) is rotatably connected to one end of the lower connecting rod (30) via the second pin (80). The other end of the upper connecting rod (20) is rotatably connected to one end of the connecting plate (40) via the third pin (90). The other end of the connecting plate (40) is also rotatably connected to the body mounting plate (50) via the fourth pin (60). The other end of the lower connecting rod (30) is rotatably connected to the bottom end of the connecting plate (40) via the fifth pin (70).
6. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The door mounting plate (10) is provided with mounting holes (101), and the door mounting plate (10) is used to be mounted on the door (130) through the mounting holes (101).
7. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The vehicle body mounting plate (50) is provided with mounting holes (501), and the vehicle body mounting plate (50) is mounted on the side panel (120) through the mounting holes (501).
8. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The door mounting plate (10) is Z-shaped.
9. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The bottom of the connecting plate (40) is provided with an independent connecting end (401), which is rotatably connected to the other end of the lower connecting rod (30).
10. The B-pillar-free disordered door hinge structure according to claim 1, characterized in that, The vehicle body mounting plate (50) is L-shaped.