A pillarless, disordered double-door structure for automobiles

Abstract

This invention relates to a pillarless, unordered double-door structure for automobiles, comprising a body shell assembly, a front door assembly, and a rear door assembly. The upper and lower ends of the body shell assembly and the rear end of the rear door are equipped with latches. The front and rear door assemblies are each equipped with a lock body adapted to the corresponding latch. The front and rear door assemblies are independent of each other and are opened independently through their respective latches and lock bodies. A rear door is snapped into place at the connection point between the rear door inner panel and the rear door B-pillar sealing plate. The inner sealing strip of the B-pillar of the car door is snapped on, and the outer sealing strip of the B-pillar of the rear door is snapped on at the outer edge of the rear door panel; the front door assembly is hinged to the body shell assembly through the front door A-pillar hinge assembly, and the rear door assembly is hinged to the body shell assembly through the upper guide rail hinge assembly, the lower guide rail hinge assembly, and the rear end guide rail hinge assembly; this invention can realize the disorderly opening of the front and rear doors without B-pillars and without interference, meeting the needs of front passengers for convenient entry and exit.

Description

[Technical Field]

[0001] This invention relates to the field of automotive parts technology, specifically to a column-less, disordered double-door structure for automobiles. [Background Technology]

[0002] With the rapid development of the automotive industry and the improvement of people's living standards, people's performance demands for automobiles have become more diversified, especially the requirements for cabin usage scenarios, convenience, comfort, and aesthetic appearance.

[0003] Side-opening doors serve as the passageway for passengers to enter and exit the car, and also function as part of the interior and exterior design, making them an important part of automobiles. To provide passengers with a better experience, the requirements for their various functions are becoming increasingly stringent, such as ease of entry and exit, and aesthetics. Traditional swing-out side doors can meet the basic needs of passengers to get in and out of the car, but they are not convenient enough in terms of ease of entry and exit. Due to the limited opening angle, rear passengers need to twist their bodies to get in and out of the vehicle; and the presence of the B-pillar also limits the ease of entry and exit for passengers, as well as the connectivity between the interior and exterior of the car, and restricts the realization of cabin usage scenarios such as seat rotation.

[0004] To improve the convenience, comfort, and aesthetics of car doors, an increasing number of models are adopting non-traditional swing door designs, such as gull-wing doors, scissor doors, suicide doors, and sliding doors. Among these, suicide doors are already used in several mass-produced models. The rear doors of suicide doors can open to a nearly 90° angle, increasing the ease of getting in and out of the vehicle. The visual effect after opening suicide doors is also more grand and upscale, enhancing aesthetics. Furthermore, if the B-pillar is eliminated, the ease of getting in and out of the vehicle is further improved, and the front and rear seats can rotate 180° using the external space, greatly expanding the usability of the cabin.

[0005] However, in the absence of a B-pillar, if traditional hinged doors are used, the front and rear doors will interfere with each other when opening, requiring a defined opening and closing sequence. This sequential opening and closing makes the process cumbersome and reduces convenience and comfort. Currently, mass-produced B-pillarless vehicles with opposing doors all have a fixed opening sequence for the front and rear doors, making it impossible to achieve unordered opening. Therefore, providing a structure that allows for unordered opening of the front and rear doors in a B-pillarless vehicle would be of great significance. [Summary of the Invention]

[0006] The purpose of this invention is to address the aforementioned shortcomings by providing a pillarless, unordered double-door structure for automobiles. This structure enables the front and rear doors to open in a pillarless, unordered manner without interference, meeting the needs of front-seat passengers for convenient entry and exit. Furthermore, the structure provides good sealing at the junction of the front and rear doors in the B-pillar area and exhibits high mechanical strength, thus solving the problem that traditional pillarless double-door models have a fixed door opening sequence, making it impossible to achieve unordered door opening.

[0007] To achieve the above objectives, a pillarless, disordered double-door structure for automobiles is designed, including a body shell assembly 100, a front door assembly 210, and a rear door assembly 220. The front door assembly 210 and the rear door assembly 220 are connected to the body shell assembly 100. The front door assembly 210 includes a front door inner panel 212 and a front door outer panel 213, and the rear door assembly 220 includes a rear door inner panel 223, a rear door outer panel 228, and a rear door B-pillar sealing plate 229. The upper and lower ends of the body shell assembly 100 and the rear end of the rear door are equipped with latches. The front door assembly 210 and the rear door assembly 220 are each equipped with a lock body adapted to the corresponding latch. The front door assembly 210 and the rear door assembly 220 are independent of each other and are connected by their respective latches and locks. The body can be opened independently; the rear door inner panel 223 and the rear door B-pillar sealing plate 229 are connected and installed with a rear door B-pillar inner sealing strip 233, and the rear door outer panel 228 is connected and installed with a rear door B-pillar outer sealing strip 234. The rear door B-pillar inner sealing strip 233 and the front door inner panel 212 interfere with each other to achieve a seal, and the rear door B-pillar outer sealing strip 234 and the front door inner panel 212 and the front door outer panel 213 interfere with each other to achieve a seal; the front door assembly 210 is hinged to the body shell assembly 100 through the front door A-pillar hinge assembly, and the rear door assembly 220 is hinged to the body shell assembly 100 through the rear door B-pillar upper guide rail hinge assembly, the rear door B-pillar lower guide rail hinge assembly, and the rear door rear end guide rail hinge assembly.

[0008] Furthermore, the body shell assembly 100 is screwed with a front door B-pillar upper latch 107 and a front door B-pillar lower latch 109 at the position corresponding to the front door assembly 210. The front door assembly 210 is provided with a lock body adapted to the front door B-pillar upper latch 107 and the front door B-pillar lower latch 109. The body shell assembly 100 is screwed with a rear door B-pillar upper latch 108, a rear door B-pillar lower latch 110 and a rear door rear latch 111 at the position corresponding to the rear door assembly 220. The rear door assembly 220 is provided with a lock body adapted to the rear door B-pillar upper latch 108, the rear door B-pillar lower latch 110 and the rear door rear latch 111.

[0009] Furthermore, the front door A-pillar hinge assembly includes a front door A-pillar end hinge type hinge 211, which is screwed onto the front door inner panel 212 and hinged to the body shell assembly 100. The front door assembly 210 rotates axially along the axis of the front door A-pillar end hinge type hinge 211.

[0010] Furthermore, the rear door B-pillar upper guide rail hinge assembly includes a rear door B-pillar upper side rail 101 and a rear door B-pillar upper hinge 222. The rear door B-pillar upper side rail 101 is welded and installed on the rear door B-pillar upper side rail mounting plate 102. The rear door B-pillar upper side rail mounting plate 102 is installed on the body shell assembly 100. The rear door B-pillar upper hinge 222 is screwed and installed on the rear door inner panel 223. A rear door B-pillar upper slide rail assembly 221 is embedded in the rear door B-pillar upper side rail 101. The rear door B-pillar upper slide rail assembly 221 is hinged to the rear door B-pillar upper hinge 222.

[0011] Furthermore, the rear door B-pillar lower guide rail hinge assembly includes a rear door B-pillar lower side rail 103 and a rear door B-pillar lower hinge 225. The rear door B-pillar lower side rail 103 is welded and installed on the rear door B-pillar lower side rail mounting plate 104. The rear door B-pillar lower side rail mounting plate 104 is installed on the body shell assembly 100. The rear door B-pillar lower hinge 225 is screwed and installed on the rear door inner panel 223. A rear door B-pillar lower slide rail assembly 224 is embedded in the rear door B-pillar lower side rail 103. The rear door B-pillar lower slide rail assembly 224 is hinged to the rear door B-pillar lower hinge 225.

[0012] Furthermore, the rear door rear end guide rail hinge assembly includes a rear door rear end side rail 105 and a rear door rear end gooseneck hinge 227. The rear door rear end side rail 105 is welded and installed on the rear door rear end side rail mounting plate 106, and the rear door rear end side rail mounting plate 106 is installed on the vehicle body assembly 100. The rear door rear end gooseneck hinge 227 is screwed and installed on the rear door inner panel 223. A rear door rear end slide rail assembly 226 is embedded in the rear door rear end side rail 105. The rear door rear end slide rail assembly 226 is hinged to the rear door rear end gooseneck hinge 227. The rear door assembly 220 rotates axially along the axis of the rear door rear end gooseneck hinge 227.

[0013] Furthermore, the rear door of the rear door assembly 220 is constrained by three guide rails: the upper side rail 101 of the rear door B-pillar, the lower side rail 103 of the rear door B-pillar, and the rear side rail 105 of the rear door. The upper side rail 101 of the rear door B-pillar only controls the Y-direction constraint, while the lower side rail 103 and the rear side rail 105 control the Y-direction degree of freedom and Z-direction support. At the same time, the rear door B-pillar upper hinge 222, the lower hinge 225, and the rear gooseneck hinge 227 of the rear door achieve complete constraint in conjunction with the rotation axes of each hinge.

[0014] Furthermore, a front door B-pillar reinforcement plate 214 is connected to the inner front door panel 212. The cross-section of the front door B-pillar reinforcement plate 214 is L-shaped. A second front door B-pillar reinforcement plate 215 is provided between the inner front door panel 212 and the outer front door panel 213. The second front door B-pillar reinforcement plate 215 is connected to the front door B-pillar reinforcement plate 214 and is arranged parallel to the front door B-pillar reinforcement plate 214.

[0015] Furthermore, a rear door B-pillar reinforcement plate 230 is connected to the inner panel 223 of the rear door. A second rear door B-pillar reinforcement plate 231 is provided between the first rear door B-pillar reinforcement plate 230 and the rear door B-pillar sealing plate 229. The second rear door B-pillar reinforcement plate 231 has an L-shaped cross-section. Both ends of the second rear door B-pillar reinforcement plate 231 are respectively connected to the first rear door B-pillar reinforcement plate 230 and the rear door B-pillar sealing plate 229. A third rear door B-pillar reinforcement plate 232 is provided between the second rear door B-pillar reinforcement plate 231 and the rear door B-pillar sealing plate 229. The third rear door B-pillar reinforcement plate 232 has a Z-shaped cross-section. Both ends of the third rear door B-pillar reinforcement plate 232 are respectively connected to the second rear door B-pillar reinforcement plate 231 and the rear door B-pillar sealing plate 229.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) No interference when the front and rear doors open in a disorderly manner: The present invention achieves the requirement that the motion envelope of the rear door when the rear door opens is satisfied and the motion envelope of the front door when it opens simultaneously does not interfere with the motion envelope of the front door.

[0018] (2) Convenience for front-seat passengers getting in and out: This invention has no B-pillars and disordered double doors, which meets the need for convenient getting in and out of the vehicle. In particular, after the front door is rotated 180 degrees in a specific scenario, the convenience for front-seat passengers to get in and out can also be met.

[0019] (3) Good sealing performance: The movement trajectory of the rear door hinge movement structure of the present invention makes it easier to achieve the sealing of the front and rear door overlap in the B-pillar area, and the sealing of the B-pillar area can be solved by traditional sealing strips;

[0020] (4) Low cost: Compared with other conceptual solutions under research (such as four-bar or five-bar), the development cost and material cost of this invention are relatively low. The movement trajectory of the rear door hinge movement structure and the sealing strip in the B-pillar area can use traditional low-cost sealing strips, without the need for more innovative sealing strips (such as developing venting sealing strips).

[0021] (5) High reliability: Compared with other conceptual solutions under development (such as four-link or five-link), the rear door hinge structure of this invention is simple, has high mechanical performance connection strength, and is easier to implement the individual performance of the actual vehicle door, such as door sinking or over-opening and over-closing or opening and closing durability and other door system test indicators. [Image Description]

[0022] Figure 1 This is a structural schematic diagram of the pillarless body and doors of the present invention from a first-view perspective;

[0023] Figure 2 This is a simplified diagram of the lock body arrangement of the present invention;

[0024] Figure 3 for Figure 1 Sectional view of AA;

[0025] Figure 4 This is a simplified diagram of the slide rail hinge arrangement of the present invention;

[0026] Figure 5 This is a simplified diagram of the front door A-pillar hinge assembly of the present invention;

[0027] Figure 6 This is a simplified diagram of the sliding rail hinge assembly on the B-pillar of the rear door of the present invention.

[0028] Figure 7 This is a simplified diagram of the rear door B-pillar lower rail hinge assembly of the present invention.

[0029] Figure 8 This is a simplified diagram of the rear door rear hinge assembly of the present invention;

[0030] Figure 9 This is a simplified diagram showing the end position of the first step (sliding) of opening the rear door in this invention;

[0031] Figure 10 This is a simplified diagram showing the fully opened positions of the front and rear doors of the vehicle according to the present invention.

[0032] In the diagram: 100. Body shell assembly; 101. Upper side rail of the rear door B-pillar; 102. Mounting plate of the upper side rail of the rear door B-pillar; 103. Lower side rail of the rear door B-pillar; 104. Mounting plate of the lower side rail of the rear door B-pillar; 105. Rear side rail of the rear door; 106. Mounting plate of the rear side rail of the rear door; 107. Upper latch of the front door B-pillar; 108. Upper latch of the rear door B-pillar; 109. Lower latch of the front door B-pillar; 110. Lower latch of the rear door B-pillar; 111. Rear latch of the rear door; 210. Front door assembly; 211. Hinged hinge at the A-pillar of the front door; 212. Inner panel of the front door; 213. Outer panel of the front door; 2 14. Front door B-pillar reinforcement plate one; 215. Front door B-pillar reinforcement plate two; 220. Rear door assembly; 221. Rear door B-pillar upper slide rail assembly; 222. Rear door B-pillar upper hinge; 223. Rear door inner panel; 224. Rear door B-pillar lower slide rail assembly; 225. Rear door B-pillar lower hinge; 226. Rear door rear slide rail assembly; 227. Rear door rear gooseneck hinge; 228. Rear door outer panel; 229. Rear door B-pillar sealing plate; 230. Rear door B-pillar reinforcement plate one; 231. Rear door B-pillar reinforcement plate two; 232. Rear door B-pillar reinforcement plate three; 233. Rear door B-pillar inner sealing strip; 234. Rear door B-pillar outer sealing strip. [Detailed Implementation]

[0033] As shown in the attached figure, the present invention provides a column-less, disordered double-door structure for automobiles, including a body shell assembly 100, a front door assembly 210, and a rear door assembly 220. The front door assembly 210 and the rear door assembly 220 are connected to the body shell assembly 100. The front door assembly 210 includes a front door inner panel 212 and a front door outer panel 213, and the rear door assembly 220 includes a rear door inner panel 223, a rear door outer panel 228, and a rear door B-pillar sealing plate 229. The upper and lower ends of the body shell assembly 100 and the rear end of the rear door are provided with latches. The front door assembly 210 and the rear door assembly 220 are respectively provided with lock bodies adapted to the corresponding latches. The front door assembly 210 and the rear door assembly 220 are independent of each other and are connected by their respective latches. The door lock body can be opened independently; the rear door inner panel 223 and the rear door B-pillar sealing plate 229 are connected at the stop and the rear door B-pillar sealing strip 233 is snapped on, and the rear door outer panel 228 is connected at the flange and the rear door B-pillar outer sealing strip 234 is snapped on. The rear door B-pillar inner sealing strip 233 and the front door inner panel 212 interfere with each other to achieve a seal. The rear door B-pillar outer sealing strip 234 and the front door inner panel 212 and the front door outer panel 213 interfere with each other to achieve a seal. The front door assembly 210 is hinged to the body shell assembly 100 through the front door A-pillar hinge assembly. The rear door assembly 220 is hinged to the body shell assembly 100 through the rear door B-pillar upper guide rail hinge assembly, the rear door B-pillar lower guide rail hinge assembly, and the rear door rear end guide rail hinge assembly.

[0034] The front door A-pillar hinge assembly includes a front door A-pillar end hinge 211, which is screwed onto the front door inner panel 212 and hinged to the body shell assembly 100. The front door assembly 210 rotates axially along the axis of the front door A-pillar end hinge 211. The rear door B-pillar upper guide rail hinge assembly includes a rear door B-pillar upper side rail 101 and a rear door B-pillar upper hinge 222. The rear door B-pillar upper side rail 101 is welded and installed on the rear door B-pillar upper side rail mounting plate 102. The rear door B-pillar upper side rail mounting plate 102 is installed on the body shell assembly 100. The rear door B-pillar upper hinge 222 is screwed and installed on the rear door inner panel 223. The rear door B-pillar upper slide rail assembly 221 is embedded in the rear door B-pillar upper side rail 101. The rear door B-pillar upper slide rail assembly 221 is hinged to the rear door B-pillar upper hinge 222. The rear door B-pillar lower guide rail hinge assembly includes a rear door B-pillar lower side rail 103 and a rear door B-pillar lower hinge 225. The rear door B-pillar lower side rail 103 is welded and installed on the rear door B-pillar lower side rail mounting plate 104. The rear door B-pillar lower side rail mounting plate 104 is installed on the body shell assembly 100. The rear door B-pillar lower hinge 225 is screwed and installed on the rear door inner panel 223. The rear door B-pillar lower slide rail assembly 224 is embedded in the rear door B-pillar lower side rail 103 and is hinged to the rear door B-pillar lower hinge 225. The rear door rear guide rail hinge assembly includes a rear door rear side rail 105 and a rear door rear gooseneck hinge 227. The rear door rear side rail 105 is welded and installed on the rear door rear side rail mounting plate 106, which is installed on the body shell assembly 100. The rear door rear gooseneck hinge 227 is screwed and installed on the rear door inner panel 223. A rear door rear slide rail assembly 226 is embedded in the rear door rear side rail 105. The rear door rear slide rail assembly 226 is hinged to the rear door rear gooseneck hinge 227. The rear door assembly 220 rotates axially along the axis of the rear door rear gooseneck hinge 227.

[0035] The rear door of the rear door assembly 220 is constrained by three guide rails: the upper side rail 101 of the rear door B-pillar, the lower side rail 103 of the rear door B-pillar, and the rear side rail 105 of the rear door. The upper side rail 101 of the rear door B-pillar only controls the Y-direction constraint, while the lower side rail 103 and the rear side rail 105 control the Y-direction freedom and Z-direction support. At the same time, the rear door completes the constraint by cooperating with the rotation axes of the upper hinge 222, the lower hinge 225, and the rear gooseneck hinge 227 of the rear door B-pillar.

[0036] The body shell assembly 100 is screwed with a front door B-pillar upper latch 107 and a front door B-pillar lower latch 109 at the position corresponding to the front door assembly 210. The front door assembly 210 is provided with a lock body that is compatible with the front door B-pillar upper latch 107 and the front door B-pillar lower latch 109. The body shell assembly 100 is screwed with a rear door B-pillar upper latch 108, a rear door B-pillar lower latch 110 and a rear door rear latch 111 at the position corresponding to the rear door assembly 220. The rear door assembly 220 is provided with a lock body that is compatible with the rear door B-pillar upper latch 108, the rear door B-pillar lower latch 110 and the rear door rear latch 111.

[0037] A front door B-pillar reinforcement plate 214 is connected to the inner panel 212 of the front door. The cross-section of the front door B-pillar reinforcement plate 214 is L-shaped. A front door B-pillar reinforcement plate 215 is provided between the inner panel 212 and the outer panel 213 of the front door. The front door B-pillar reinforcement plate 215 is connected to the front door B-pillar reinforcement plate 214 and is arranged parallel to the front door B-pillar reinforcement plate 214. A rear door B-pillar reinforcement plate 230 is connected to the inner panel 223 of the rear door. A rear door B-pillar reinforcement plate 231 is provided between the rear door B-pillar reinforcement plate 230 and the rear door B-pillar sealing plate 229. The rear door B-pillar reinforcement plate 231 has an L-shaped cross section. The two ends of the rear door B-pillar reinforcement plate 231 are respectively connected to the rear door B-pillar reinforcement plate 230 and the rear door B-pillar sealing plate 229. A rear door B-pillar reinforcement plate 232 is provided between the rear door B-pillar reinforcement plate 231 and the rear door B-pillar sealing plate 229. The rear door B-pillar reinforcement plate 232 has a Z-shaped cross section. The two ends of the rear door B-pillar reinforcement plate 232 are respectively connected to the rear door B-pillar reinforcement plate 231 and the rear door B-pillar sealing plate 229.

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0039] As attached Figure 1 To be continued Figure 9 As shown, this embodiment provides a pillarless, disordered double-door structure, including a body shell assembly 100, a front door assembly 210, and a rear door assembly 220;

[0040] The body shell assembly 100 includes a rear door B-pillar upper side rail 101, a rear door B-pillar upper side rail mounting plate 102, a rear door B-pillar lower side rail 103, a rear door B-pillar lower side rail mounting plate 104, a rear door rear side rail 105, a rear door rear side rail mounting plate 106, a front door B-pillar upper latch 107, a rear door B-pillar upper latch 108, a front door B-pillar lower latch 109, a rear door B-pillar lower latch 110, and a rear door rear latch 111.

[0041] The front door assembly 210 includes a front door A-pillar hinge 211, a front door inner panel 212, a front door outer panel 213, a front door B-pillar reinforcement plate one 214, and a front door B-pillar reinforcement plate two 215.

[0042] The rear door assembly 220 includes the upper slide rail assembly 221 of the rear door B-pillar, the upper hinge 222 of the rear door B-pillar, the inner panel of the rear door 223, the lower slide rail assembly 224 of the rear door B-pillar, the lower hinge 225 of the rear door B-pillar, the rear slide rail assembly 226 of the rear door, the rear gooseneck hinge 227 of the rear door, the outer panel of the rear door 228, the B-pillar sealing plate 229 of the rear door, the first B-pillar reinforcement plate 230 of the rear door, the second B-pillar reinforcement plate 231 of the rear door, the third B-pillar reinforcement plate 232 of the rear door, the inner sealing strip 233 of the rear door B-pillar, and the outer sealing strip 234 of the rear door B-pillar.

[0043] The locking system of the B-pillarless, disordered double-door structure consists of: a front door upper B-pillar latch 107 and a front door lower B-pillar latch 109 screwed to the body shell assembly 100; a front door assembly 210 equipped with a lock body adapted to the front door upper B-pillar latch 107 and the front door lower B-pillar latch 109; a rear door upper B-pillar latch 108, a rear door lower B-pillar latch 110, and a rear door rear end latch 111 screwed to the body shell assembly 100; and a rear door assembly 220 equipped with a lock body adapted to the rear door upper B-pillar latch 108, the rear door lower B-pillar latch 110, and the rear door rear end latch 111. All latches are connected to the body shell assembly 100, and the front door assembly 210 and the rear door assembly 220 are independent of each other and can be opened independently.

[0044] When the latch is inserted into the lock body, the front door assembly 210 and the rear door assembly 220 are in the closed state and cannot be opened outwards; when the latch is separated from the lock body, the front door assembly 210 and the rear door assembly 220 are in the open state and can be opened outwards. By providing latches at the upper and lower ends of the body shell assembly 100 and at the rear end of the rear door, the connection stability and sealing performance of the front door assembly 210 and the rear door assembly 220 to the body shell assembly 100 are ensured.

[0045] The front and rear door sealing structure of this pillarless, disordered double-door structure is as follows: the inner sealing strip 233 of the rear door B-pillar is snapped onto the inner rear door panel 223, the rear door B-pillar sealing plate 229, and the connecting stop of the rear door B-pillar reinforcing plate 230; the outer sealing strip 234 of the rear door B-pillar is snapped onto the flange of the outer rear door panel 228. The inner sealing strip 233 of the rear door B-pillar interferes with the inner front door panel 212 to achieve a seal, and the outer sealing strip 234 of the rear door B-pillar interferes with the inner front door panel 212 and the outer front door panel 213 to achieve a seal.

[0046] The hinge installation structure for this pillarless, disordered double-door structure is as follows:

[0047] Front door A-pillar hinge assembly: The front door A-pillar hinge 211 is screwed to the front door inner panel 212 and hinged to the body shell assembly 100.

[0048] Rear door B-pillar upper guide rail hinge assembly: The upper side guide rail 101 of the rear door B-pillar is welded and installed on the upper side guide rail mounting plate 102 of the rear door B-pillar, and the upper hinge 222 of the rear door B-pillar is screwed and installed on the inner panel 223 of the rear door. The upper slide rail assembly 221 of the rear door B-pillar is embedded in the upper side guide rail 101 of the rear door B-pillar and is hinged to the upper hinge 222 of the rear door B-pillar.

[0049] Rear door B-pillar lower guide rail hinge assembly: The rear door B-pillar lower side rail 103 is welded and installed on the rear door B-pillar lower side rail mounting plate 104, the rear door B-pillar lower hinge 225 is screwed and installed on the rear door inner panel 223, and the rear door B-pillar lower slide rail assembly 224 is embedded in the rear door B-pillar lower side rail 103 and hinged to the rear door B-pillar lower hinge 225.

[0050] Rear door rear guide rail hinge assembly: The rear door rear side rail 105 is welded and installed on the rear door rear side rail mounting plate 106, the rear door rear gooseneck hinge 227 is screwed and installed on the rear door inner panel 223, and the rear door rear slide rail assembly 226 is embedded in the rear door rear side rail 105 and hinged to the rear door rear gooseneck hinge 227.

[0051] The movement process of this column-free, disordered double-door structure is as follows:

[0052] The front door assembly 210 rotates outward along the axis of the hinge 211 at the A-pillar of the front door. During this process, the interference between the front door assembly 210 and the inner sealing strip 233 and the outer sealing strip 234 of the B-pillar of the rear door gradually decreases and eventually moves away. The front door assembly 210 can be opened independently regardless of whether the rear door assembly 220 is in the open or closed state.

[0053] The rear door assembly 220 uses three hinges and guide rails to constrain the rear door assembly 220 to achieve disordered or simultaneous opening of the front and rear doors. The opening process of the rear door assembly 220 consists of two steps. The first step is sliding: the B-pillar end of the rear door assembly 220 moves a certain distance in a direction approximately from the rear of the vehicle, and the rear end moves a certain distance in a direction from the rear of the vehicle and from the outside of the vehicle. During this process, the interference between the inner sealing strip 233 and the outer sealing strip 234 of the rear door B-pillar and the front door assembly 210 gradually decreases until there is no interference and a sufficient gap is left to achieve independent opening of the rear door assembly 220 regardless of whether the front door assembly 210 is in a closed or open state. The second step is rotation: the upper slide rail assembly 221 of the rear door B-pillar disengages from the upper side guide rail 101 of the rear door B-pillar, the lower slide rail assembly 224 of the rear door B-pillar disengages from the lower side guide rail 103 of the rear door B-pillar, the rear slide rail assembly 226 of the rear door is fixed, and the rear door assembly 220 rotates outward along the axis of the rear gooseneck hinge 227 of the rear door. When closed, the operation sequence and direction of movement are reversed compared to when opened.

[0054] Rear door hinge constraint degrees of freedom definition: The rear door requires three fixed hinge guide rails for constraint, namely the upper side rail 101 of the rear door B-pillar, the lower side rail 103 of the rear door B-pillar, and the rear side rail 105 of the rear door. However, during body-in-white production and door assembly, minor manufacturing errors and consistency issues cannot be avoided in the positions of these three hinges and guide rails. Therefore, the three guide rails are designed to absorb manufacturing errors. The upper side rail 101 of the rear door B-pillar only controls the Y-axis constraint, while the lower side rail 103 and the rear side rail 105 control the Y-axis degree of freedom and Z-axis support. Simultaneously, in conjunction with the rotation axes of each hinge, complete constraint is achieved while avoiding over-constraint.

[0055] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0056] This invention is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this invention shall be considered equivalent substitutions and shall be included within the scope of protection of this invention.

Claims

1. A pillarless, disordered double-door structure for automobiles, characterized in that: The vehicle includes a body shell assembly (100), a front door assembly (210), and a rear door assembly (220). The front door assembly (210) and the rear door assembly (220) are connected to the body shell assembly (100). The front door assembly (210) includes a front door inner panel (212) and a front door outer panel (213). The rear door assembly (220) includes a rear door inner panel (223), a rear door outer panel (228), and a rear door B-pillar sealing panel (229). The upper and lower ends of the body shell assembly (100) and the rear end of the rear door are provided with latches. The front door assembly (210) and the rear door assembly (220) are respectively provided with lock bodies that are adapted to the corresponding latches. The front door assembly (210) and the rear door assembly (220) are independent of each other and can be opened independently through their respective latches and lock bodies. The rear door inner panel (223) is connected to the rear door B-pillar sealing plate (229) at the joint with the rear door B-pillar sealing plate (229) and a rear door B-pillar inner sealing strip (233) is snapped on the flange of the rear door outer panel (228). The rear door B-pillar inner sealing strip (233) is interfering with the front door inner panel (212) to achieve sealing. The rear door B-pillar outer sealing strip (234) is interfering with the front door inner panel (212) and the front door outer panel (213) to achieve sealing. The front door assembly (210) is hinged to the body shell assembly (100) via the front door A-pillar hinge assembly, and the rear door assembly (220) is hinged to the body shell assembly (100) via the rear door B-pillar upper guide rail hinge assembly, the rear door B-pillar lower guide rail hinge assembly, and the rear door rear end guide rail hinge assembly. The rear door rear end guide rail hinge assembly includes a rear door rear end side rail (105) and a rear door rear end gooseneck hinge (227). The rear door rear end side rail (105) is welded and installed on the rear door rear end side rail mounting plate (106). The rear door rear end side rail mounting plate (106) is installed on the body shell assembly (100). The rear door rear end gooseneck hinge (227) is screwed and installed on the rear door inner panel (223). A rear door rear end slide rail assembly (226) is embedded in the rear door rear end side rail (105). The rear door rear end slide rail assembly (226) is hinged to the rear door rear end gooseneck hinge (227). The rear door assembly (220) rotates axially along the axis of the rear door rear end gooseneck hinge (227).

2. The automotive pillarless, disordered double-door structure as described in claim 1, characterized in that: The body shell assembly (100) is screwed with a front door B-pillar upper latch (107) and a front door B-pillar lower latch (109) at the position corresponding to the front door assembly (210). The front door assembly (210) is provided with a lock body that is compatible with the front door B-pillar upper latch (107) and the front door B-pillar lower latch (109). The body shell assembly (100) is screwed with a rear door B-pillar upper latch (108), a rear door B-pillar lower latch (110), and a rear door rear latch (111) at the position corresponding to the rear door assembly (220). The rear door assembly (220) is provided with a lock body that is compatible with the rear door B-pillar upper latch (108), the rear door B-pillar lower latch (110), and the rear door rear latch (111).

3. The automotive pillarless, disordered double-door structure as described in claim 1, characterized in that: The front door A-pillar hinge assembly includes a front door A-pillar end hinge (211), which is screwed onto the front door inner panel (212) and hinged to the body shell assembly (100). The front door assembly (210) rotates axially along the axis of the front door A-pillar end hinge (211).

4. The automotive pillarless, disordered double-door structure as described in claim 3, characterized in that: The rear door B-pillar upper guide rail hinge assembly includes a rear door B-pillar upper side rail (101) and a rear door B-pillar upper hinge (222). The rear door B-pillar upper side rail (101) is welded and installed on the rear door B-pillar upper side rail mounting plate (102). The rear door B-pillar upper side rail mounting plate (102) is installed on the body shell assembly (100). The rear door B-pillar upper hinge (222) is screwed and installed on the rear door inner panel (223). The rear door B-pillar upper slide rail assembly (221) is embedded in the rear door B-pillar upper side rail (101). The rear door B-pillar upper slide rail assembly (221) is hinged to the rear door B-pillar upper hinge (222).

5. The automotive pillarless, disordered double-door structure as described in claim 4, characterized in that: The rear door B-pillar lower guide rail hinge assembly includes a rear door B-pillar lower side rail (103) and a rear door B-pillar lower hinge (225). The rear door B-pillar lower side rail (103) is welded and installed on the rear door B-pillar lower side rail mounting plate (104). The rear door B-pillar lower side rail mounting plate (104) is installed on the body shell assembly (100). The rear door B-pillar lower hinge (225) is screwed and installed on the rear door inner panel (223). The rear door B-pillar lower slide rail assembly (224) is embedded in the rear door B-pillar lower side rail (103). The rear door B-pillar lower slide rail assembly (224) is hinged to the rear door B-pillar lower hinge (225).

6. The automotive pillarless, disordered double-door structure as described in claim 1, characterized in that: The rear door of the rear door assembly (220) is constrained by three guide rails: the upper side rail (101) of the rear door B-pillar, the lower side rail (103) of the rear door B-pillar, and the rear side rail (105) of the rear door. The upper side rail (101) of the rear door B-pillar only controls the Y-direction constraint, while the lower side rail (103) and the rear side rail (105) of the rear door B-pillar control the Y-direction freedom and Z-direction support. At the same time, the rear door is fully constrained by the rotation axes of the upper hinge (222), the lower hinge (225), and the rear gooseneck hinge (227) of the rear door B-pillar.

7. The automotive pillarless, disordered double-door structure as described in claim 1, characterized in that: The front door inner panel (212) is connected to a front door B-pillar reinforcement plate one (214), the front door B-pillar reinforcement plate one (214) has an L-shaped cross section, and a front door B-pillar reinforcement plate two (215) is provided between the front door inner panel (212) and the front door outer panel (213). The front door B-pillar reinforcement plate two (215) is connected to the front door B-pillar reinforcement plate one (214) and is arranged parallel to the front door B-pillar reinforcement plate one (214).

8. The automotive pillarless, disordered double-door structure as described in claim 1, characterized in that: A rear door B-pillar reinforcement plate one (230) is connected to the rear door inner panel (223). A rear door B-pillar reinforcement plate two (231) is provided between the rear door B-pillar reinforcement plate one (230) and the rear door B-pillar sealing plate (229). The rear door B-pillar reinforcement plate two (231) has an L-shaped cross section. The two ends of the rear door B-pillar reinforcement plate two (231) are respectively connected to the rear door B-pillar reinforcement plate one (230) and the rear door B-pillar sealing plate (229). A rear door B-pillar reinforcement plate three (232) is provided between the rear door B-pillar reinforcement plate two (231) and the rear door B-pillar sealing plate (229). The rear door B-pillar reinforcement plate three (232) has a Z-shaped cross section. The two ends of the rear door B-pillar reinforcement plate three (232) are respectively connected to the rear door B-pillar reinforcement plate two (231) and the rear door B-pillar sealing plate (229).

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