A side sliding door device and a vehicle

Abstract

The application relates to a side sliding door device and a car, and the side sliding door device comprises a first driving mechanism, a second driving mechanism, a first sliding block, a second sliding block, a first connecting rod, a second connecting rod, a door frame, a sliding door, a sliding rod and a screw rod; the first sliding block is slidably arranged on the sliding rod; the second sliding block is threadedly connected with the screw rod; the first driving mechanism is used for driving the second hinge to move; and the second driving mechanism is used for driving the screw rod to rotate. According to the embodiment of the application, the first connecting rod and the second connecting rod are arranged to be connected with the door frame and the sliding door respectively, so that the sliding door can be translated to open and close the door without arranging a sliding rail on the outside of the door, the structure of the application is simple, the two connecting rods can be used to realize the translation of the door, the space required for installing the sliding door can be reduced, the side sliding door device can be installed on the front side door of the car and the rear side door of the car.

Description

TECHNICAL FIELD

[0001] The present application relates to a side sliding door device and a vehicle. BACKGROUND

[0002] The door frame is a frame body with an entrance on a vehicle, and the entrance is a necessary path for passengers to enter and exit the cabin and take and place articles.

[0003] The common van uses a sliding door to cover the entrance, that is, a sliding rail is arranged on the outer side of the vehicle body, and the sliding door slides on the sliding rail to achieve sliding door opening. This kind of sliding door opening mode has the problem that the track needs to be exposed. In addition, due to the small space of the front side door of the vehicle, there is not enough space to arrange the front rail, so the front side door of the existing van cannot apply the sliding door. SUMMARY

[0004] The technical problem to be solved by the present application is that the existing sliding door is arranged on the outer side of the vehicle body, and the sliding door slides on the sliding rail to achieve sliding door opening. This kind of sliding door opening mode has the problem that the track needs to be exposed.

[0005] In order to solve the above technical problems, the present application provides a side sliding door device, which comprises: a first driving mechanism, a second driving mechanism, a first sliding block, a second sliding block, a first connecting rod, a second connecting rod, a door frame with an entrance, a sliding door for covering the entrance, a sliding rod arranged on the door frame, and a lead screw arranged on the sliding door; the first sliding block is slidably arranged on the sliding rod; the second sliding block is threadedly connected with the lead screw;

[0006] The first end of the first connecting rod is pivotally connected with the first sliding block, and the second end of the first connecting rod is pivotally connected with the sliding door through a first hinge;

[0007] The first end of the second connecting rod is pivotally connected with the second sliding block, and the second end of the second connecting rod is pivotally connected with the door frame through a second hinge;

[0008] The first driving mechanism is used to drive the second hinge to move, so that the second connecting rod rotates relative to the door frame;

[0009] The second driving mechanism is used to drive the lead screw to rotate, so as to drive the second sliding block to move on the lead screw.

[0010] Optionally, the rotation axis of the first hinge and the rotation axis of the second hinge are not coaxial and are parallel.

[0011] Optionally, the second driving mechanism is a first motor, and the output shaft of the first motor is coaxially connected with the lead screw.

[0012] Optionally, the first driving mechanism is a second motor; the second motor is coaxially connected with a rotating shaft of the second hinge.

[0013] Optionally, the sliding rod is parallel to the lead screw.

[0014] Optionally, the vehicle door frame is further provided with a mounting seat; the first connecting rod penetrates through a avoiding slot of the vehicle door frame; the mounting seat is arranged on the inner side of the vehicle door frame, and the mounting seat is provided with a mounting cavity which is in communication with the avoiding slot; the sliding rod is arranged in the mounting cavity.

[0015] The mounting cavity is provided with a guide rail which is parallel to the sliding rod; the first sliding block is provided with a pulley; the pulley is slidably arranged on the guide rail.

[0016] Optionally, the vehicle door frame is further provided with a locking mechanism; the locking mechanism is arranged on the first sliding block; the locking mechanism has a locking state and an unlocking state; in the locking state, the locking mechanism locks the first sliding block on the sliding rod.

[0017] The sliding door is movable relative to the entrance and exit, so that the sliding door has a door closing state, a half-open door state and a fully open door state.

[0018] In the process that the sliding door is switched from the door closing state to the half-open door state:

[0019] The sliding door slides from the front side of the vehicle door frame to the rear side of the vehicle door frame, and the locking mechanism is in the locking state; when the sliding door is in the door closing state, the first driving mechanism drives the second hinge to rotate, so as to switch the sliding door from the door closing state to the half-open door state.

[0020] In the process that the sliding door is switched from the half-open door state to the open door state:

[0021] The sliding door slides from the front side of the vehicle door frame to the rear side of the vehicle door frame, and the locking mechanism is in the unlocking state; when the sliding door is in the half-open door state, the second driving mechanism drives the lead screw to rotate, so as to drive the second sliding block to move from the front end of the lead screw to the rear end of the lead screw, and to drive the sliding door to switch from the half-open door state to the fully open door state.

[0022] In the process that the sliding door is switched from the open door state to the half-open door state:

[0023] The sliding door slides from the rear side of the door frame to the front side of the door frame, and the locking mechanism is in the unlocked state; when the sliding door is in the open door state, the second driving mechanism drives the screw rod to rotate, so as to drive the second sliding block to move from the rear end of the screw rod to the front end of the screw rod, and drive the sliding door to switch from the open door state to the half-open door state;

[0024] In the process that the sliding door switches from the half-open door state to the closed door state:

[0025] The sliding door slides from the rear side of the door frame to the front side of the door frame, and the locking mechanism is in the locked state; when the sliding door is in the half-open door state, the first driving mechanism drives the second hinge to rotate, so as to drive the sliding door to switch from the half-open door state to the closed door state.

[0026] Optionally, the locking mechanism comprises a first pivot, a latch and an electromagnetic valve; the first end of the first connecting rod is pivotally connected with the first sliding block through the first pivot; the first sliding block is provided with a sliding channel, and the latch slides in the sliding channel; the sliding rod is provided with a clamping groove; the first end of the first connecting rod is provided with an accommodating groove; and the electromagnetic valve is arranged in the accommodating groove.

[0027] When the sliding door is in the closed door state, the first end of the latch abuts against the side surface of the first end of the first connecting rod, and the second end of the latch is inserted into the clamping groove;

[0028] When the sliding door is in the open door state or the half-open door state, the first end of the latch is adsorbed with the electromagnetic valve and is inserted into the accommodating groove, and the second end of the latch is inserted into the sliding channel.

[0029] Optionally, the extension direction of the sliding channel is perpendicular to the axis direction of the sliding rod; and the cross section of the accommodating groove is arc-shaped.

[0030] A car comprises the side sliding door device as any one of the above.

[0031] Compared with the prior art, the side sliding door device and the car have the following beneficial effects:

[0032] The side sliding door device only needs to connect the door frame and the sliding door through the first connecting rod and the second connecting rod, so that the sliding door can be translated to open and close the door without the need of setting a sliding rail on the outside of the door, and the structure of the device is simple, only two connecting rods are needed to achieve the translation of opening and closing the door, so that the space required for installing the sliding door is reduced, and the side sliding door device can be installed on the front side door and the rear side door of the car. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic view of the sliding door in a closed state in an embodiment of the present application;

[0034] Figure 2 is a structural schematic view of the sliding door in a half-open state in an embodiment of the present application;

[0035] Figure 3 is a structural schematic view of the sliding door in a fully open state in an embodiment of the present application;

[0036] Figure 4 is a schematic view of the connection relationship between the sliding rod and the first sliding block in an embodiment of the present application;

[0037] Figure 5 is a sectional view of the locking mechanism (locked state) in an embodiment of the present application;

[0038] Figure 6 is a sectional view of the locking mechanism (unlocked state) in an embodiment of the present application;

[0039] Figure 7 is a schematic view of the connection relationship between the first driving mechanism and the second driving mechanism in an embodiment of the present application.

[0040] In the figure, 1, first driving mechanism; 2, second driving mechanism; 3, first sliding block; 4, second sliding block; 5, first connecting rod; 51, accommodating groove; 6, second connecting rod; 7, door frame; 71, avoiding groove; 8, sliding door; 9, sliding rod; 91, clamping groove; 10, lead screw; 11, first hinge; 12, second hinge; 13, mounting seat; 14, pulley; 15, guide rail; 16, locking mechanism; 161, first pivot; 162, bolt; 163, electromagnetic valve. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0042] First of all, it needs to be pointed out that the top, bottom, upward, downward and other orientations mentioned in this text are defined with respect to the direction in each figure, which are relative concepts and therefore can change according to different positions and different practical states. Therefore, these or other orientations should not be used to understand as restrictive terms.

[0043] It should be noted that the term "comprising" does not exclude other elements or steps, and "one" or "an" does not exclude a plurality.

[0044] It should also be noted that any individual technical feature described or implied in the embodiments herein, or any individual technical feature shown or implied in the drawings, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the application not directly mentioned herein.

[0045] It should also be understood that the terms "first", "second" and the like are used herein to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information, and similarly, the "second" information can also be referred to as "first" information without departing from the scope of the application.

[0046] It should be noted that the same reference numerals represent the same or substantially the same components in different drawings.

[0047] As shown in Figure 1 , Figure 2 and Figure 3 , a side sliding door device of a preferred embodiment of the embodiment of the application comprises a first driving mechanism 1, a second driving mechanism 2, a first sliding block 3, a second sliding block 4, a first connecting rod 5, a second connecting rod 6, a door frame 7 with an entrance and exit, a sliding door 8 for covering the entrance and exit, a sliding rod 9 arranged on the door frame 7, and a lead screw 10 arranged on the sliding door 8. Wherein, the door frame 7 is part of the automobile frame, which is specially used for installing the door, and the entrance and exit on the door frame 7 is for users to enter and exit the automobile.

[0048] Referring to Figure 2 and Figure 4 , the first sliding block 3 is slidably arranged on the sliding rod 9, and the second sliding block 4 is threadedly connected with the lead screw 10, and the second sliding block 4 can also slide along the lead screw 10 under the driving of the rotation of the lead screw 10.

[0049] Referring to Figure 1 , Figure 2 and Figure 3 , a first end of the first connecting rod 5 is pivotally connected with the first sliding block 3, and a second end of the first connecting rod 5 is pivotally connected with the sliding door 8 through a first hinge 11.

[0050] A first end of the second connecting rod 6 is pivotally connected with the second sliding block 4, and a second end of the second connecting rod 6 is pivotally connected with the door frame 7 through a second hinge 12.

[0051] The first driving mechanism 1 is used to drive the second hinge 12 to move, so as to drive the second connecting rod 6 to rotate relative to the door frame 7. The second driving mechanism 2 is used to drive the lead screw to rotate, so as to drive the second sliding block 4 to move on the lead screw 10.

[0052] Based on the above structure, the sliding door 8 can move relative to the entrance and exit, so as to have a closed door state, a half-open door state and a fully open door state. The closed door state is that the sliding door 8 completely covers the entrance and exit of the door frame 7. The half-open door state is that the sliding door 8 is half unfolded. The fully open door state is that the sliding door 8 is completely unfolded. In the process of opening the sliding door 8, the closed door state, the half-open door state and the fully open door state are sequentially passed through. In the process of closing the sliding door 8, the fully open door state, the half-open door state and the closed door state are sequentially passed through.

[0053] It should be noted that the sliding of the sliding door 8 from the front side of the door frame 7 to the rear side of the door frame 7 refers to the unfolding direction of the sliding door 8. The front side of the door frame 7 refers to the end of the door frame 7 close to the front of the vehicle. The rear side of the door frame 7 refers to the end of the door frame 7 close to the rear of the vehicle. The working principle of the present application is described in combination with the above structure:

[0054] In the process of switching the sliding door 8 from the closed door state to the half-open door state:

[0055] Referring to Figure 1 and Figure 2 , the sliding door 8 slides from the front side of the door frame 7 to the rear side of the door frame 7. At this time, the sliding rod 9 is locked with the first sliding block 3, so that the first sliding block 3 cannot slide. When the sliding door 8 is in the closed door state, the first driving mechanism 1 drives the second hinge 12 to rotate, so that the sliding door 8 is flipped relative to the second hinge 12 by a certain angle towards the rear side of the door frame 7, so as to switch the sliding door 8 from the closed door state to the half-open door state.

[0056] In the process of switching the sliding door 8 from the half-open door state to the open door state:

[0057] Referring to Figure 2 and Figure 3 , the sliding door 8 slides from the front side of the door frame 7 to the rear side of the door frame 7. At this time, the sliding rod 9 is unlocked with the first sliding block 3, so that the first sliding block 3 can slide on the sliding rod 9. When the sliding door 8 is in the half-open door state, the second driving mechanism 2 drives the lead screw to rotate, so as to drive the second sliding block 4 to move from the front end of the lead screw to the rear end of the lead screw, so as to translate the sliding door 8 from the front side of the door frame 7 to the rear side of the door frame 7, so as to switch the sliding door 8 from the half-open door state to the fully open door state.

[0058] In the process of switching the sliding door 8 from the open door state to the half open door state:

[0059] Referring to Figure 2 and Figure 3 , the sliding door 8 slides from the rear side of the door frame 7 to the front side of the door frame 7, and the sliding rod 9 is unlocked with the first sliding block 3 so that the first sliding block 3 can slide. When the sliding door 8 is in the open door state, the second driving mechanism 2 drives the screw rod to rotate, so that the second sliding block 4 moves from the rear end of the screw rod to the front end of the screw rod, and the sliding door 8 translates from the rear side of the door frame 7 to the front side of the door frame 7, so that the sliding door 8 is switched from the open door state to the half open door state.

[0060] In the process of switching the sliding door 8 from the half open door state to the closed door state:

[0061] Referring to Figure 1 and Figure 2 , the sliding door 8 slides from the rear side of the door frame 7 to the front side of the door frame 7, and the sliding rod 9 is locked with the first sliding block 3 in the closed door state so that the first sliding block 3 cannot slide. When the sliding door 8 is in the half open door state, the first driving mechanism 1 drives the second hinge 12 to rotate, so that the sliding door 8 is flipped relative to the second hinge 12 by a certain angle to the front side of the door frame 7, so that the sliding door 8 is switched from the half open door state to the closed door state.

[0062] Therefore, the present application can avoid the need for a sliding rail on the outside of the door to achieve the translation of the sliding door 8 in the prior art, and the structure of the present application is simple, only two connecting rods are needed to achieve the translation of the sliding door 8, which can reduce the space required for the installation of the sliding door 8.

[0063] In addition, the sliding rod is parallel to the screw rod, and the sliding rod 9 and the screw rod 10 extend along the front and rear of the vehicle body, so that the first sliding block 3 and the second sliding block 4 can slide along the front and rear of the vehicle body on the sliding rod 9 and the screw rod 10.

[0064] Further, the rotation axis of the first hinge 11 and the rotation axis of the second hinge 12 are not coaxial and parallel, and the rotation axis of the first hinge 11 and the rotation axis of the second hinge 12 are not coaxial, which can avoid the inclination of the sliding door 8 relative to the entrance.

[0065] Further, referring to Figure 1, the second driving mechanism 2 is a first motor. The output shaft of the first motor is coaxially connected with the lead screw 10, and the first motor is arranged on the sliding door 8. It can be understood that the application can adjust the distance between the sliding door 8 and the vehicle body by adjusting the length of the first connecting rod 5 and the second connecting rod 6, so as to adapt to different use requirements. In order to improve the adjustment range of the distance between the sliding door 8 and the vehicle body, the first motor of the application is arranged at the front end position of the lead screw 10 (the end of the lead screw 10 close to the vehicle head), so that the first motor will not be clamped between the sliding door 8 and the vehicle body when the sliding door 8 is in the fully open door state.

[0066] Further, the first driving mechanism 1 is a second motor. The second motor is coaxially connected with the rotating shaft of the second hinge 12. The second motor is arranged on the door frame 7.

[0067] In a possible embodiment, referring to Figure 1 and Figure 3 , the embodiment of the application further comprises a mounting seat 13. The door frame 7 is provided with a avoiding slot 71. The first connecting rod 5 penetrates through the avoiding slot 71, so that the first connecting rod 5 can slide in the avoiding slot 71. The mounting seat 13 is arranged on the inner side of the door frame 7, and the mounting seat 13 has a mounting cavity which is in communication with the avoiding slot 71. The sliding rod 9 is arranged in the mounting cavity, and the first sliding block 3 slides in the mounting cavity.

[0068] Specifically, referring to Figure 1 and Figure 3 , the mounting seat 13 is also located at the position below the entrance and exit.

[0069] Referring to Figure 4 , in order to avoid the first sliding block 3 from deviating when sliding, a guide rail 15 parallel to the sliding rod 9 is arranged in the mounting cavity. A pulley 14 is arranged on the first sliding block 3, and the pulley 14 slides on the guide rail 15, so that the first sliding block 3 of the application slides on the sliding rod 9 and also slides on the guide rail 15.

[0070] In a possible embodiment, referring to Figure 5 and Figure 6 , the embodiment of the application further comprises a locking mechanism 16. The locking mechanism 16 is arranged on the first sliding block 3. The locking mechanism 16 has a locking state and an unlocking state. In the locking state, the locking mechanism 16 locks the first sliding block 3 on the sliding rod 9. In the unlocking state, the first sliding block 3 can slide on the sliding rod 9.

[0071] The working principle of the application is described in combination with the above-mentioned embodiment with the locking mechanism 16:

[0072] In the process of switching the sliding door 8 from the closed state to the half-open state:

[0073] Referring to Figure 1 and Figure 2 , the sliding door 8 slides from the front side of the door frame 7 to the rear side of the door frame 7, and at this time the locking mechanism 16 is in the locked state, and the sliding rod 9 is locked with the first sliding block 3, so that the first sliding block 3 cannot slide. When the sliding door 8 is in the closed state, the second driving mechanism 1 drives the second hinge 12 to rotate, so that the sliding door 8 is flipped relative to the second hinge 12 to the rear side of the door frame 7 by a certain angle, so as to switch the sliding door 8 from the closed state to the half-open state.

[0074] In the process of switching the sliding door 8 from the half-open state to the open state:

[0075] Referring to Figure 2 and Figure 3 , the sliding door 8 slides from the front side of the door frame 7 to the rear side of the door frame 7, and at this time the locking mechanism 16 is in the locked state, and the sliding rod 9 is locked with the first sliding block 3, so that the first sliding block 3 cannot slide. When the sliding door 8 is in the closed state, the second driving mechanism 1 drives the second hinge 12 to rotate, so that the sliding door 8 is flipped relative to the second hinge 12 to the rear side of the door frame 7 by a certain angle, so as to switch the sliding door 8 from the closed state to the half-open state.

[0076] In the process of switching the sliding door 8 from the open state to the half-open state:

[0077] Referring to Figure 2 and Figure 3 , the sliding door 8 slides from the rear side of the door frame 7 to the front side of the door frame 7, and at this time the locking mechanism 16 is in the locked state, and the sliding rod 9 is locked with the first sliding block 3, so that the first sliding block 3 cannot slide. When the sliding door 8 is in the closed state, the second driving mechanism 1 drives the second hinge 12 to rotate, so that the sliding door 8 is flipped relative to the second hinge 12 to the rear side of the door frame 7 by a certain angle, so as to switch the sliding door 8 from the closed state to the half-open state.

[0078] In the process of switching the sliding door 8 from the half-open state to the closed state:

[0079] Referring to Figure 1 and Figure 2, the sliding door 8 slides from the rear side of the door frame 7 to the front side of the door frame 7, the locking mechanism 16 is in the locked state in the closed door state, the sliding rod 9 is locked with the first sliding block 3 so that the first sliding block 3 cannot slide. When the sliding door 8 is in the half-open door state, the first driving mechanism 1 drives the second hinge 12 to rotate, so that the sliding door 8 is flipped relative to the second hinge 12 to the front side of the door frame 7 by a certain angle, so as to drive the sliding door 8 to switch from the half-open door state to the closed door state.

[0080] Based on this, after the locking mechanism 16 is arranged in the application, the first sliding block 3 and the sliding rod 9 can be locked by the locking mechanism 16, so as to separately control the rotation of the sliding door 8 relative to the second hinge 12. At the same time, the first sliding block 3 and the sliding rod 9 can also be unlocked by the locking mechanism 16, so that the first sliding block 3 and the sliding rod 9 can slide relative to each other, so that the sliding door 8 can be controlled along the extension direction of the lead screw 10.

[0081] In a possible embodiment of the locking mechanism 16, referring to Figure 5 and Figure 6 , the locking mechanism 16 comprises a first pivot 161, a plug 162 and an electromagnetic valve 163. The first end of the first connecting rod 5 is pivoted to the first sliding block 3 through the first pivot 161. The first sliding block 3 is provided with a sliding channel, the plug 162 is slidably arranged in the sliding channel, the sliding rod 9 is provided with a clamping groove 91, and the clamping groove 91 is arranged at the front end position of the sliding rod 9. When the first sliding block 3 is at the front end position, the clamping groove 91 and the sliding channel can coincide so that the plug 162 can be inserted into the clamping groove 91 from the sliding channel. The first end of the first connecting rod 5 is provided with a receiving groove 51, and the electromagnetic valve 163 is arranged in the receiving groove 51.

[0082] When the sliding door 8 is in the closed door state, the first end of the plug 162 abuts against the side surface of the first end of the first connecting rod 5, and the second end of the plug 162 is inserted into the clamping groove 91. That is, in the closed door state, the first sliding block 3 is located at the front end of the sliding rod 9, the clamping groove 91 and the sliding channel are communicated, and the plug 162 is abutted in the clamping groove 91 by the first end side of the first connecting rod 5, so that the first sliding block 3 and the sliding rod 9 are locked.

[0083] When the sliding door 8 is in the open door state or the half open door state, the first end of the latch 162 is attracted to the electromagnetic valve 163 and is inserted into the accommodating groove 51, and the second end of the latch 162 is inserted into the sliding channel. That is, when switching from the closed door state to the half open door state, the first connecting rod 5 rotates around the first pivot 161 until the accommodating groove 51 corresponds to the sliding channel, and the electromagnetic valve 163 in the accommodating groove 51 attracts the first end of the latch 162 into the accommodating groove 51, so that the second end of the latch 162 is separated from the clamping groove 91.

[0084] In addition, during the switching from the half open door state to the closed door state, the first connecting rod 5 rotates around the first pivot 161, and the first end of the latch 162 is abutted against the accommodating groove 51 to push the first end of the latch 162 out of the accommodating groove 51 until the first end of the latch 162 is abutted against the first end side of the first connecting rod 5, and the second end of the latch 162 is inserted into the clamping groove 91, so that the first sliding block 3 and the sliding rod 9 are relatively fixed during the switching from the half open door state to the closed door state.

[0085] Specifically, the first pivot 161 extends in the vertical direction, and the first pivot 161 is perpendicular to the sliding channel.

[0086] Further, the extension direction of the sliding channel is perpendicular to the axis direction of the sliding rod 9. The cross section of the accommodating groove 51 is arc-shaped, so that when the first connecting rod 5 rotates around the first pivot 161, the first end of the latch 162 is more easily withdrawn from the accommodating groove 51 along the side wall of the accommodating groove 51.

[0087] The application also provides an automobile, which comprises the side sliding door device as any one of the above.

[0088] In summary, the side sliding door device and the automobile provided by the embodiments of the application only need to connect the door frame 7 and the sliding door 8 by the first connecting rod 5 and the second connecting rod 6 respectively, so that the sliding door 8 can be translated to open and close the door without the need of setting a sliding rail on the outside of the door as in the prior art. Meanwhile, the structure of the application is simple, and only two connecting rods are needed to achieve the translation to open and close the door, so that the space required for installing the sliding door 8 can be reduced, and the side sliding door device of the application can be installed on the front side door of the automobile as well as the rear side door of the automobile.

[0089] The above description is only the preferred embodiments of the application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the application, and these improvements and replacements should also be considered as the protection scope of the application.

Claims

1. A side sliding door arrangement, characterized in that The application relates to a vehicle door system. The system comprises a first driving mechanism, a second driving mechanism, a first sliding block, a second sliding block, a first connecting rod, a second connecting rod, a vehicle door frame with an entrance and exit, a sliding door used for covering the entrance and exit, a sliding rod arranged on the vehicle door frame, and a screw rod arranged on the sliding door; the first sliding block is arranged on the sliding rod; the second sliding block is threadedly connected with the screw rod; a first end of the first connecting rod is pivotally connected with the first sliding block, and a second end of the first connecting rod is pivotally connected with the sliding door through a first hinge; a first end of the second connecting rod is pivotally connected with the second sliding block, and a second end of the second connecting rod is pivotally connected with the vehicle door frame through a second hinge; the first driving mechanism is used for driving the second hinge to move, so that the second connecting rod rotates relative to the vehicle door frame; the second driving mechanism is used for driving the screw rod to rotate, so that the second sliding block moves on the screw rod; the system further comprises a locking mechanism; the locking mechanism is arranged on the first sliding block; the locking mechanism has a locking state and an unlocking state; in the locking state, the locking mechanism locks the first sliding block on the sliding rod; the sliding door can move relative to the entrance and exit, so that the sliding door has a door closing state, a half-open door state and a fully open door state; in the process that the sliding door is switched from the door closing state to the half-open door state: the sliding door slides from a front side of the vehicle door frame to a rear side of the vehicle door frame, and the locking mechanism is in the locking state; when the sliding door is in the door closing state, the first driving mechanism drives the second hinge to rotate, so that the sliding door is switched from the door closing state to the half-open door state; in the process that the sliding door is switched from the half-open door state to the open door state: the sliding door slides from the front side of the vehicle door frame to the rear side of the vehicle door frame, and the locking mechanism is in the unlocking state; when the sliding door is in the half-open door state, the second driving mechanism drives the screw rod to rotate, so that the second sliding block moves from a front end of the screw rod to a rear end of the screw rod, and the sliding door is switched from the half-open door state to the fully open door state; in the process that the sliding door is switched from the open door state to the half-open door state: the sliding door slides from the rear side of the vehicle door frame to the front side of the vehicle door frame, and the locking mechanism is in the unlocking state; when the sliding door is in the open door state, the second driving mechanism drives the screw rod to rotate, so that the second sliding block moves from the rear end of the screw rod to the front end of the screw rod, and the sliding door is switched from the open door state to the half-open door state; in the process that the sliding door is switched from the half-open door state to the door closing state: the sliding door slides from the rear side of the vehicle door frame to the front side of the vehicle door frame, and the locking mechanism is in the locking state; when the sliding door is in the half-open door state, the first driving mechanism drives the second hinge to rotate, so that the sliding door is switched from the half-open door state to the door closing state.

2. The side sliding door apparatus according to claim 1, characterized by the rotation axis of the first hinge and the rotation axis of the second hinge are not coaxial and are parallel.

3. The side sliding door apparatus according to claim 1, wherein the second driving mechanism is a first motor; an output shaft of the first motor is coaxially connected with the screw rod.

4. The side sliding door apparatus according to claim 1, wherein The first driving mechanism is a second motor; the second motor is coaxially connected with the rotating shaft of the second hinge.

5. The side sliding door apparatus according to claim 1, wherein The sliding rod is parallel to the lead screw.

6. The side sliding door apparatus according to claim 1, characterized by Further comprising: A mounting seat; The vehicle door frame is provided with an avoiding slot; the first connecting rod penetrates through the avoiding slot; the mounting seat is arranged on the inner side of the vehicle door frame, and the mounting seat is provided with a mounting cavity which is in communication with the avoiding slot; the sliding rod is arranged in the mounting cavity; The mounting cavity is provided with a guide rail which is parallel to the sliding rod; the first sliding block is provided with a pulley; the pulley is slidably arranged on the guide rail.

7. The side sliding door apparatus according to claim 1, wherein The locking mechanism comprises a first pivot, a bolt and an electromagnetic valve; the first end of the first connecting rod is pivotally connected with the first sliding block through the first pivot; the first sliding block is provided with a sliding channel; the bolt is slidably arranged in the sliding channel; the sliding rod is provided with a clamping groove; the first end of the first connecting rod is provided with an accommodating slot; the electromagnetic valve is arranged in the accommodating slot; When the sliding door is in the closed state, the first end of the bolt abuts against the side surface of the first end of the first connecting rod, and the second end of the bolt is inserted into the clamping groove; When the sliding door is in the open state or the half-open state, the first end of the bolt is attracted to the electromagnetic valve and inserted into the accommodating slot, and the second end of the bolt is inserted into the sliding channel.

8. The side sliding door apparatus according to claim 7, wherein The extension direction of the sliding channel is perpendicular to the axis direction of the sliding rod; the cross section of the accommodating slot is arc-shaped.

9. An automobile characterized by comprising: Comprising: The side sliding door device according to any one of claims 1-8.

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