Side door restraint system and vehicle for sliding door models

Abstract

The present invention discloses a side door restraint system and a vehicle of a sliding door vehicle, wherein the vehicle has no B-pillar, and the top and / or bottom of the side door of the vehicle is provided with a first restraint portion, and the top and / or bottom of the vehicle body is correspondingly provided with a second restraint portion, and when the side door is closed, the first restraint portion and the second restraint portion cooperate to at least achieve position limiting in the outer and inner directions. In this solution, the side door and the vehicle body are provided with a first restraint portion and a second restraint portion that cooperate, and when the side door is closed, the first restraint portion and the second restraint portion cooperate to at least achieve position limiting in the outer and inner directions, so that when the vehicle collides, the position limiting cooperation of the first restraint portion and the second restraint portion can divert the impact load on the side door to the vehicle body, which is beneficial to improving the safety factor of vehicles without B-pillars.

Description

Technical Field

[0001] The invention relates to the technical field of vehicles, and in particular to a side door restraint system of a sliding door vehicle and a vehicle. Background Art

[0002] Sliding door vehicles have doors that open and close by sliding. The front doors of sliding door vehicles are generally restrained by front hinges and rear mechanical locks connected to the B-pillar. Sliding doors are restrained laterally by upper, middle and lower hinges, and are locked by front locks connected to the B-pillar and rear locks connected to the C-pillar.

[0003] The B-pillar between the front door and the sliding door is installed with the front door lock hook and the sliding door lock hook. When closed, the front door and the sliding door are interlocked with the lock hooks respectively. In the event of a collision, the energy of the front door and the sliding door can be transferred to the vehicle body to prevent the door from deforming too much and invading the passenger compartment space, thereby protecting the safety of passengers.

[0004] At present, there are models with hidden B-pillars, that is, the B-pillar is removed from the end of the car body. At this time, the locking mechanism of the front door and sliding door at the original B-pillar position is cancelled, and the collision safety is bound to be greatly reduced. To solve this problem, one solution is to add a reinforcement plate to the sliding door to increase the strength, but the improvement in collision safety is limited. Summary of the invention

[0005] The present invention provides a side door restraint system for a sliding door vehicle, wherein the vehicle has no B-pillar, and a first restraint portion is provided at the top and / or bottom of the side door of the vehicle, and a second restraint portion is correspondingly provided at the top and / or bottom of the vehicle body. When the side door is closed, the first restraint portion and the second restraint portion cooperate to achieve at least positioning in the outward and inward directions.

[0006] Optionally, the side door includes a sliding door, the sliding door is provided with the first restraint portion, and the floor of the vehicle body is provided with the second restraint portion. One of the first restraint portion and the second restraint portion includes a first restraint seat with a notch, and the other includes a first restraint hook. The first restraint hook can be inserted into the notch along the closing path of the sliding door and limited in the outward and inward directions.

[0007] Optionally, the first restraint seat includes a folded edge folded along the edge of the notch; the first restraint hook includes a locking disk, the locking disk is inserted into the notch, and the folded edge limits the locking disk in an upward or downward direction to limit the upward movement of the sliding door.

[0008] Optionally, the first constraint seat is arranged on the floor, the first constraint hook is arranged on the lower hinge of the sliding door, and the lock plate is located below the lower hinge of the sliding door.

[0009] Optionally, the first restraint hook includes a lock column connected to or integrally arranged with the lock disk, the first restraint hook also includes a connecting plate, the lock column includes a large diameter section and a small diameter section, the small diameter section is provided with an external thread, the small diameter section passes through the connecting plate and the downward sliding door hinge from bottom to top in sequence, and is locked by cooperating with the small diameter section thread through a nut located above the downward sliding door hinge; the connecting plate is fixed to the downward sliding door hinge by bolts.

[0010] Optionally, the side door includes a front door, the front door is provided with the first restraint portion, and the floor of the vehicle body is provided with the second restraint portion, and one of the first restraint portion and the second restraint portion includes a second restraint seat, the second restraint seat is provided with a slot with a notch facing outward, and the other includes a second restraint hook, and the second restraint hook can be inserted into the slot along the closing path of the front door and limited in the outward and inward directions.

[0011] Optionally, the second restraint hook includes an I-shaped structure, the bottom of the slot of the second restraint seat has a notch, the top of the I-shaped structure is inserted into the slot, the middle of the I-shaped structure passes through the notch, and the bottom of the I-shaped structure is fixed to the front door or the floor.

[0012] Optionally, the side door includes a front door, and the top and / or bottom of the front door are provided with a first locking portion, and the top and / or bottom of the vehicle body are correspondingly provided with a second locking portion. When the door is closed, the first locking portion and the second locking portion cooperate to lock the front door and the vehicle body.

[0013] Optionally, the side door comprises a sliding door, and when the sliding door is closed, the rear side of the sliding door is locked to the C-pillar of the vehicle.

[0014] The present invention also provides a vehicle, whose doors include a sliding door and a front door, and the vehicle has no B-pillar, and also includes the side door restraint system of the sliding door vehicle type described in any one of the above items.

[0015] In the present solution, the side door and the vehicle body are provided with a first restraint portion and a second restraint portion that cooperate with each other, and when the side door is closed, the first restraint portion and the second restraint portion cooperate to achieve at least positioning in the outward and inward directions. In this way, when the vehicle collides, the limiting cooperation of the first restraint portion and the second restraint portion can divert the impact load on the side door to the vehicle body, which is beneficial to improving the safety factor of vehicles without B-pillars. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a side door restraint system according to an embodiment of the present invention, wherein the front door of the side door and the inner side of the sliding door are shown;

[0017] Figure 2 for Figure 1A schematic diagram of the structure of the lock hook installed on the lower hinge of the middle sliding door;

[0018] Figure 3 for Figure 2 Schematic diagram of the middle lock hook;

[0019] Figure 4 is a schematic diagram of a lock seat being arranged on the floor of a vehicle;

[0020] Figure 5 for Figure 4 A top view of the middle lock seat;

[0021] Figure 6 for Figure 2 Center lock hook and Figure 5 Schematic diagram of the middle lock seat cooperation;

[0022] Figure 7 for Figure 6 Installation explosion diagram;

[0023] Figure 8 for Figure 1 Schematic diagram of the cooperation between the second restraint seat 61 of the middle front door and the second restraint hook 62 provided on the floor;

[0024] Fig. 9 for Figure 8 A schematic diagram of the second restraining hook 62;

[0025] Fig.10 for Figure 8 A schematic diagram of the second constraint seat 61;

[0026] Fig.11 for Figure 8 A schematic diagram of the second restraining hook 62 and the second restraining seat 61 after being matched;

[0027] Fig.12 for Fig.11 Middle AA section view;

[0028] Fig.13 for Figure 1 Schematic diagram of the coordination between the upper part of the center side door and the vehicle body.

[0029] Figure 1-13 The reference numerals in the drawings are described as follows:

[0030] 1-front door; 1a-keyhole;

[0031] 2-sliding door; 21-sliding door lower hinge; 22-sliding door upper hinge;

[0032] 3-first locking assembly; 31-latch; 32-lock hook;

[0033] 4-second locking assembly; 42-locking hook;

[0034] 5-first constraint assembly; 51-first constraint hook; 511-locking plate; 512a-large diameter section; 512b-small diameter section; 513-connecting plate; 513a-connecting hole; 514-bolt; 515-nut; 52-first constraint seat; 521-folded edge; 522-notch; 523-bolt; 52a-connecting hole;

[0035] 6-second restraint assembly; 61-second restraint seat; 61a-slot; 61b-notch; 611-bolt; 62-second restraint hook; 621-top; 622-middle; 623-bottom; 624-bolt;

[0036] 100-body; 101-floor. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Please refer to Figure 1 , Figure 1 Schematic diagram of a side door restraint system in an embodiment of the present invention, showing the front door 1 and the inner side of the sliding door 2 of the side door.

[0039] This embodiment is for a sliding door vehicle, that is, the side door of the vehicle includes a sliding door. Figure 1 In the embodiment, the side door of the vehicle includes a front door 1 and a sliding door 2 located at the rear side of the front door 1. The front door 1 is opened or closed by rotating the rotating shaft located at the front side, and the sliding door 2 is opened or closed by sliding forward and backward. Of course, the moving path of the sliding door 2 when opening or closing is not a pure linear motion along the front and rear directions. The sliding door lower hinge 21 and the sliding door upper hinge 22 (shown in FIG. 2 ) are connected to each other. Fig.13 ) needs to be swung outward a certain distance before sliding backward to open, and the opposite direction is required to close.

[0040] In addition, the vehicle in this embodiment has no B-pillar, that is, there is no B-pillar support between the front door 1 and the sliding door 2. In this solution, a first constraint portion is provided at the top and / or bottom of the side door of the vehicle, and a second constraint portion is provided at the top and / or bottom of the vehicle body 100 accordingly. The first constraint portion and the second constraint portion cooperate to at least achieve the limitation in the outer-inner direction when the side door is closed. The limitation in the outer-inner direction refers to the limitation from the outside to the inside, that is, when the side door continues to move inward in the closed state, it will be constrained. In this way, when the vehicle collides, the limitation cooperation of the first constraint portion and the second constraint portion can divert the impact load on the side door to the vehicle body 100 to improve the safety factor.

[0041] Figure 1In the figure, the side door of the vehicle shown includes a sliding door 2 and a front door 1, and the bottom of the vehicle is provided with a first restraint assembly 5 and a second restraint assembly 6, wherein the first restraint assembly 5 includes a first restraint portion and a second restraint portion respectively provided on the sliding door 2 and the vehicle body 100, and the second restraint assembly 6 includes a first restraint portion and a second restraint portion respectively provided on the front door 1 and the vehicle body 100. This ensures that the sliding door 2 and the front door 1 can divert the impact load to the lower vehicle body 100 when a collision occurs.

[0042] like Figure 2-7 As shown, Figure 2 for Figure 1 A schematic diagram of the structure of the first restraining hook 51 installed on the lower hinge 21 of the middle sliding door 2; Figure 3 for Figure 2 A schematic diagram of the first restraining hook 51; Figure 4 is a schematic diagram of the first restraint seat 52 being arranged on the vehicle floor 101; Figure 5 for Figure 4 A top view of the first constraint seat 52; Figure 6 for Figure 2 The first restraining hook 51 and Figure 5 A schematic diagram of the cooperation of the first constraint seat 52;

[0043] Figure 7 for Figure 6 Installation explosion diagram.

[0044] The sliding door 2 is provided with a first restraining portion, which is specifically Figure 2 The first restraint hook 51 is shown in the figure, and the floor 101 of the vehicle body 100 is provided with a second restraint portion, which is specifically a first restraint seat 52 with a notch 522. The first restraint hook 51 can be inserted into the notch 522 of the first restraint seat 52 along the closing path of the sliding door 2 and limited in the outward and inward directions.

[0045] As mentioned above, when the sliding door 2 is initially opened or closed, the movement path of the sliding door 2 is not a straight path, but a curve. Based on the center axis of the vehicle, when the sliding door 2 is initially opened, it moves in an outward and backward oblique path. When the sliding door 2 is closed, it moves in an inward and forward oblique path. Therefore, in order to adapt to this inclined curved path, the shape design of the notch 522 needs to adapt to this path. The notch 522 can be set obliquely outward and cannot interfere with the movement of the sliding door 2. Figure 4 , 5 As shown, the first restraint seat 52 includes a vertical plate erected from the floor 101 of the vehicle body 100, and the vertical plate is generally L-shaped, one side of the L-shaped vertical plate is generally perpendicular to the outer edge of the floor 101, and the other side is not parallel to the edge of the floor 101, but has a certain inclination angle. Figure 5 The middle left-right direction corresponds to the left-right direction of the vehicle. It can be seen that the notch 522 of the first restraint seat 52 is an angular space smaller than 90 degrees.

[0046] like Figure 3 As shown, the first restraining hook 51 includes a locking plate 511, and the locking plate 511 is circular. Figure 4 As shown, the inner side of the angular space formed by the notch 522 has an arc segment to adapt to the circular locking plate 511 to better achieve the limiting fit.

[0047] In addition, if Figure 4 , 5 As shown, the first restraining seat 52 includes a folded edge 521 folded inwardly along the edge of the notch 522. The locking plate 511 of the first restraining hook 51, as shown in FIG. Figure 6 As shown, the lock plate 511 is inserted into the notch 522 when the sliding door 2 is closed, and the folded edge 521 is located above the lock plate 511, which can limit the upward displacement of the lock plate 511. When the sliding door 2 of the vehicle collides, the sliding door 2 will collapse and deform into the vehicle interior without any restriction, and the bottom of the sliding door 2 will move inward and upward accordingly. Here, the folded edge 521 limits the upward movement of the lock plate 511, which can correspondingly reduce the amount of collapse of the sliding door 2 into the vehicle interior, thereby improving the safety factor of the passengers in the vehicle interior.

[0048] Figure 5 In the embodiment, after the notch 522 is provided with the folded edge 521, the folded edge 521 encloses and forms a substantially U-shaped bayonet, and the opening of the U-shaped bayonet is inclined and extends outward and backward. Figure 3 , 6 As shown, the first restraining hook 51 is provided with a lock column (including a large diameter section 512a and a small diameter section 512b), the radial dimension of the lock column is smaller than the lock plate 511, the lock column can extend upward from the U-shaped opening, and the lock plate 511 is stuck between the folded edge 521 and the floor 101. The two sides of the U-shaped opening are unequal in length, and the outer length is smaller than the inner length to avoid interference with the lock column and affect the movement of the sliding door 2. The U-shaped bayonet and the lock column cooperate to limit the lock column in the inner and outer directions, thereby better ensuring the reliability and safety of the sliding door.

[0049] Figure 4In the embodiment, the first constraint seat 52 is specifically arranged on the floor 101, and the first constraint hook 51 is arranged on the lower hinge 21 of the sliding door 2, and the lock plate 511 of the first constraint hook 51 is located below the lower hinge 21 of the sliding door. The first constraint hook 51 is arranged on the lower hinge 21 of the sliding door, which is convenient for installation and does not require any changes to the sliding door 2. Of course, the first constraint hook 51 can also be arranged on the body of the sliding door 2. The first constraint seat 52 is arranged on the floor 101, which is convenient for cooperation with the first constraint hook 51. When the position of the first constraint hook 51 changes, the position of the first constraint seat 52 is also adjusted accordingly. This solution does not make specific restrictions. It can be understood that the first constraint hook 51 and the first constraint seat 52 are matched. The first constraint seat 52 is arranged on the sliding door 2, and the first constraint hook 51 is arranged on the vehicle body 100. This is also a feasible solution. At this time, the folding edge limits the downward displacement of the lock plate.

[0050] Specifically, Figure 3 , 6 As shown in Figures 7 and 8, the first restraining hook 51 includes a lock column connected to or integrally provided with the lock plate 511, and the first restraining hook 51 also includes a connecting plate 513. The lock column includes a large diameter section 512a and a small diameter section 512b. The large diameter section 512a is connected to the lock plate 511, and the small diameter section 512b is provided with an external thread. The small diameter section 512b passes through the connecting plate 513 and the lower door hinge 21 from bottom to top, and is locked by the nut 515 located above the lower door hinge 21 and the small diameter section 512b in cooperation with the thread. The connecting plate 513 is fixed to the lower door hinge 21 by a plurality of bolts 514, as shown in Figures 7 and 8. Figure 3 As shown, the connecting plate 513 is provided with a plurality of connecting holes 513a, and the connecting holes 513a can be bolt holes, which are directly matched with the bolts 514, or the connecting holes 513a can also be light holes, which can be locked with suitable nuts. The connection plate 513 can increase the contact area between the first restraining hook 51 and the lower hinge 21 of the sliding door to enhance the connection reliability and ensure the force transmission effect. It can be known that the specific structure of the first restraining hook 51 and the connection method with the lower hinge 21 of the sliding door are not limited to this, and can also be welding, riveting, etc., and the connection plate 513 can also be not provided, or the connection plate 513 and the lock column can be provided in one piece.

[0051] Please continue to refer to Figure 8-11 , Figure 8 for Figure 1 Schematic diagram of the cooperation between the second restraint seat 62 of the middle front door 1 and the second restraint hook 61 provided on the floor 101; Fig. 9 for Figure 8 A schematic diagram of the second restraining hook 62; Fig.10 for Figure 8 A schematic diagram of the second constraint seat 61; Fig.11 for Figure 8 A schematic diagram of the second restraining hook 62 and the second restraining seat 61 after being matched; Fig.12 for Fig.11 AA section view.

[0052] As mentioned above, the side door also includes the front door 1, the front door 1 is provided with a first restraint portion, and the floor 101 of the vehicle body 100 is provided with a second restraint portion, wherein the first restraint portion is a second restraint seat 61 provided at the bottom of the front door 1, and the second restraint portion is a second restraint hook 62 provided at the floor 101 of the vehicle body 100. The second restraint seat 61 is provided with a card slot 61a, and the notch of the card slot 61a faces outward, and the second restraint hook 62 can be inserted into the card slot 61a along the closing path of the front door 1 and limited in the outer-inner direction. It can be understood that the size of the card slot 61a along the length direction of the vehicle can be slightly larger than or larger than the second restraint hook 62 so as not to interfere with the rotation of the front door 1, such as Fig.11 shown.

[0053] The second restraining hook 62 in this embodiment is an I-shaped structure, including a top 621, a middle 622, and a bottom 623. The bottom of the slot 61a of the second restraining seat 61 has a notch 61b. The top 611 of the I-shaped structure is inserted into the slot 61a, and in the process of inserting into the slot 61a, the middle 622 of the I-shaped structure penetrates into the notch 522. The bottom 623 of the I-shaped structure is used as a mounting plate, which is provided with a connecting hole and is fixed to the floor 101 of the vehicle body 100 by bolts 624. Fig.10 As shown, the top of the slot 61a of the second restraint seat 61 is fixed to the lower part of the front door 1 by a bolt 611. When the second restraint hook 62 is inserted into the slot 61a, the slot 61a can be a through slot, that is, the back of the slot 61a away from the second restraint hook 62 can be free of walls, and the second restraint hook 62 can contact the wall of the front door 1 exposed behind the back of the second restraint seat 61. Alternatively, if the back of the slot 61a has a wall, the second restraint hook 62 can contact the back of the slot 61a, and indirectly contact the front door 1, both of which can achieve limiting in the outside and inside directions.

[0054] Fig.11 As shown in the figure, the dimension of the middle part 622 of the I-shaped structure along the length direction of the vehicle is L, and the dimension of the side wall of the slot 61a of the second restraint seat 61 along the length direction of the vehicle is H. By reasonably designing L and H, the reliability of the limit can be ensured.

[0055] Likewise, the second restraint seat 61 and the second restraint hook 62 may also be arranged in reverse, that is, the second restraint hook 62 is arranged on the front door 1 and the second restraint seat 61 is arranged on the floor 101 , which are both feasible solutions.

[0056] In the above embodiment, the first restraint component 5 and the second restraint component 6 are designed according to the structural characteristics and door closing paths of the sliding door 2 and the front door 1, respectively. As long as the restraint components do not interfere with the opening and closing of the sliding door 1 or the front door 1 and can cooperate with each other to achieve external and internal limit when closing the door, they all fall within the protection scope of this solution.

[0057] Please continue to combine Figure 8 , and refer to Fig.13 , Fig.13 for Figure 1 Schematic diagram of the cooperation between the upper part of the middle side door and the vehicle body 100.

[0058] In this embodiment, the top and bottom of the front door 1 are connected to the vehicle body 100 through a locking assembly, respectively. Figure 1 The first locking assembly 3 and the second locking assembly 4 shown in the figure, the first locking assembly 3 and the second locking assembly 4 both include a first locking portion and a second locking portion that match each other, the top and bottom of the front door 1 are provided with a first locking portion, and the top and bottom of the vehicle body 100 are correspondingly provided with a second locking portion. When the door is closed, the first locking portion and the second locking portion cooperate to lock the front door 1 and the vehicle body 100.

[0059] Specifically, Figure 8 As shown, the front door 1 is provided with a lock hole 1a at the bottom, the first locking part of the second locking assembly 4 at the bottom is a lock bolt (not shown) arranged in the lock hole 1a, and the second locking part is a lock hook 42 arranged on the floor 101 of the vehicle body 100. The lock hook 42 is door-shaped. When the front door 1 is closed, the lock hook 42 is located in the lock hole 1a, and the lock bolt in the lock hole 1a extends under electrical or mechanical control to be stuck in the lock hook 42 to complete the locking. Similarly, as Fig.13 As shown, a first locking assembly is provided at the top, and the first locking assembly 3 includes a latch 31 provided at the top of the front door 1, and a door-shaped lock hook 32 provided at the top of the vehicle body 100. When the front door 1 is closed, the latch 31 extends into the lock hook 32 for locking. In this way, for a vehicle without a B-pillar, the front door 1 can be reliably locked on the vehicle body 100.

[0060] In addition, for each of the above embodiments, after the sliding door 2 of the side door is closed, the rear side of the sliding door 2 is locked to the C-pillar of the vehicle, and the front side of the sliding door 2 is limited outside and inside by the above-mentioned first constraint seat 52 and the first constraint hook 51. That is, in this solution, the sliding door 2 of the vehicle is fixed to the C-pillar, and the front door 1 is fixed to the top, bottom and vehicle body by the locking assembly, so as to achieve locking when the vehicle is closed, and the above-mentioned first constraint assembly 5 and second constraint assembly 6 are used to achieve the external and internal limit, so that the impact load can be diverted to the vehicle body when it is hit, thereby improving the safety of the vehicle without B-pillar. Based on this, the above-mentioned first constraint assembly 5 and second constraint assembly 6 are both arranged at the bottom of the vehicle, so that the impact load is diverted to the lower vehicle body, which is conducive to better maintaining the stability of the vehicle. Of course, the constraint assembly can also be arranged at the top of the vehicle, which also plays a dispersing role, but the stability is inferior to the solution arranged at the bottom, or the constraint assembly can be arranged at the top and bottom of the vehicle at the same time.

[0061] This embodiment also provides a vehicle, whose doors include a sliding door 2 and a front door 1, and the vehicle has no B-pillar, and also includes a side door restraint system of the sliding door 2 vehicle model described in any of the above embodiments, which has the same technical effects as any of the above embodiments and will not be repeated.

[0062] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. Side door restraint system for sliding door vehicles without B-pillars, characterized in that: The top and / or bottom of the side door of the vehicle is provided with a first restraining part, and the top and / or bottom of the vehicle body is correspondingly provided with a second restraining part. When the side door is closed, the first restraining part and the second restraining part cooperate to at least achieve position limitation in the outer-inner direction. The position limitation in the outer-inner direction means that when the side door continues to move inward in the closed state, it will be restrained; The side door includes a sliding door, the sliding door is provided with the first restraint part, the floor of the vehicle body is provided with the second restraint part, one of the first restraint part and the second restraint part includes a first restraint seat with a notch, and the other includes a first restraint hook, the first restraint hook can be inserted into the notch along the closing path of the sliding door, and limited in the outward and inward directions; and / or, the side door includes a front door, the front door is provided with the first restraint part, and the floor of the vehicle body is provided with the second restraint part, one of the first restraint part and the second restraint part includes a second restraint seat, the second restraint seat is provided with a slot with a notch facing outwards, and the other includes a second restraint hook, the second restraint hook can be inserted into the slot along the closing path of the front door, and limited in the outward and inward directions.

2. The side door restraint system for a sliding door vehicle according to claim 1, characterized in that: The first restraining seat includes a folded edge folded along the edge of the notch; the first restraining hook includes a locking disk, the locking disk is stuck in the notch, and the folded edge limits the locking disk in an upward or downward direction to limit the upward movement of the sliding door.

3. The side door restraint system for a sliding door vehicle according to claim 2, characterized in that: The first restraint seat is arranged on the floor, the first restraint hook is arranged on the lower hinge of the sliding door, and the lock plate is located below the lower hinge of the sliding door.

4. The side door restraint system for a sliding door vehicle according to claim 3, characterized in that: The first restraint hook includes a lock column connected to or integrally arranged with the lock disk, and the first restraint hook also includes a connecting plate. The lock column includes a large diameter section and a small diameter section, and the small diameter section is provided with an external thread. The small diameter section passes through the connecting plate and the lower hinge of the sliding door from bottom to top in sequence, and is locked by a nut located above the lower hinge of the sliding door and the threaded cooperation of the small diameter section; the connecting plate is fixed to the lower hinge of the sliding door by bolts.

5. The side door restraint system for a sliding door vehicle according to claim 1, characterized in that: The second restraint hook includes an I-shaped structure, the bottom of the slot of the second restraint seat has a notch, the top of the I-shaped structure is inserted into the slot, the middle of the I-shaped structure passes through the notch, and the bottom of the I-shaped structure is fixed to the front door or the floor.

6. The side door restraint system for a sliding door vehicle according to any one of claims 1 to 5, characterized in that: The side door includes a front door, and the top and / or bottom of the front door are provided with a first locking part, and the top and / or bottom of the vehicle body are correspondingly provided with a second locking part. When the door is closed, the first locking part and the second locking part cooperate to lock the front door and the vehicle body.

7. The side door restraint system for a sliding door vehicle according to any one of claims 1 to 5, characterized in that: The side door comprises a sliding door, and when the sliding door is closed, the rear side of the sliding door is locked to the C-pillar of the vehicle.

8. A vehicle, wherein the vehicle doors include sliding doors and front doors, and the vehicle has no B-pillars, characterized in that: It also includes the side door restraint system for a sliding door vehicle type as described in any one of claims 1-6.

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